TY - CONF A1 - von der Au, Marcus T1 - SPE HR-CS GF MAS – A New Sum Parameter Method for Extractable Organically Bound Fluorine (EOF) in Surface Water N2 - Introducing fluorine into organic molecules leads to new chemical/physical properties. Up to now, the OECD identified and categorized 4730 per- and polyfluoroalkyl substances-related CAS numbers. Especially in the field of technical applications (e.g. surface coatings, fire extinguishing foams) as well as pharmaceuticals, fluorinated substances gain in importance. Thus, an increasing release of fluorinated compounds into the environment is expected. The high environmental persistence of perfluorinated compounds leads to the risk of bioaccumulation. Partially fluorinated substances (polyfluorinated compounds) undergo degradation; thus, further possible fluorine species occur, which may exhibit different toxic/chemical properties. However, current target methods (e.g., HPLC/MS-MS) are not applicable for a comprehensive screening as well as assessment of pollution. Thus, the poster presents a new sum parameter method for quantitative determination of extractable organically bound fluorine (EOF) in surface water samples. The method is based on solid-phase extraction (SPE) for fluorinated compounds as well as quantitative separation of interfering inorganic fluoride in combination with high-resolution-continuum source graphite furnace molecular absorption spectrometry (HR-CS GF MAS) for quantitative analysis. By means of this technique, the detection of high resolution molecular absorption spectra (MAS) is enabled upon the addition of a modifier and the formation of a diatomic molecule (e.g. GaF) After successful optimization of the SPE procedure (maximum concentration of extractable organic fluorine), enrichment factors of about 1000 were achieved, allowing for highly sensitive fluorine detection. Next to a species-unspecific response, limits of detection in the low nanogram per liter range were achieved and real surface water samples were analyzed. EOF values in the range of about 50-300 ng/L were detected. The developed method allows for a fast and sensitive as well as selective screening of organically bound fluorine (EOF) in surface water samples, helping to elucidate pollution hotspots as well as discharge routes. T2 - 2020 Winter Conference on Plasma Spectrochemistry CY - Tucson, AZ, USA DA - 12.01.2020 KW - SPE HR-CS GF MAS KW - Sum parameter KW - Fluorine Detection PY - 2020 AN - OPUS4-50352 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - The role of scattering in the formation of laserinduced periodic surface structures (LIPSS) N2 - Laser-induced periodic surface structures (LIPSS) are a universal phenomenon that is accompanying laser materials processing. These surface nanostructures pave a simple way for surface functionalization with numerous applications in optics, fluidics, tribology, medicine, etc. This contribution reviews the current view on the role of electromagnetic scattering in the formation of LIPSS. T2 - Workshop on Theoretical and Numerical Tools for Nanophotonics (TNTN 2020) CY - Berlin, Germany DA - 12.02.2020 KW - Laser-induced periodic surface structures, LIPSS KW - Electromagnetic scattering KW - Finite-difference time-domain calculations PY - 2020 AN - OPUS4-50399 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogel, Christian T1 - Leaching behavior of Antimony in MSWI bottom ash N2 - Bottom ash (BA) from municipal solid waste incineration (MSWI) contains harmful substances such as heavy metals, chloride and sulfate which are mobilized in contact with water. Standardized leaching tests are used to measure the extent of mobilization. It is known that fresh bottom ash displays elevated concentrations of various heavy metals such as lead or zinc due to the formation of hydroxo complexes as a result of high pH values of 12 and above. Storage of BA is accompanied by ageing processes, mainly the reaction of CaO and Ca(OH)2 with CO2 leading to lower pH values in contact with water around 11. Usually heavy metals concentrations are minimum at these conditions. Knowledge of the long-term leaching behavior of potentially harmful substances is crucial for the assessment of the environmental compatibility of reusing municipal solid-waste incineration bottom ash (MSWI BA) in construction, i.e., as a road base layer. BA fractions obtained from wet-processing aiming at the improvement of environmental quality were used to investigate the mobility of relevant substances. Eluates from laboratory-scaled leaching procedures (column percolation and lysimeters) were analyzed to learn about the long-term release of substances. Unsaturated conditions and artificial rainwater were used in the lysimeter tests to simulate field conditions. In addition, batch test eluates were generated at usual liquid-to-solid ratios (L/S) for compliance testing purposes. A variety of cations and anions was measured in the eluates. The wet treatment reduces the leaching of chloride and particularly sulfate by more than 60%. The release of typical contaminants for the treated MSWI BA such as the heavy metals Cu and Cr was well below 1% in the conducted leaching tests. An increase in the Sb concentration was observed in the lysimeter experiments starting at L/S 0.75 L/kg and in the column experiment at L/S 4 L/kg is assumed to be related to decreasing concentrations of Ca and thus to the dissolution of sparingly soluble calcium antimonate. The same leaching mechanism applies with V, but the concentration levels observed are less critical regarding relevant limit values. However, on the long term the behavior of Sb could be problematic for the application of MSWI BA as secondary building material. T2 - MINEA Final Conference CY - Bologna, Italy DA - 20.02.2020 KW - Antimony KW - Bottom ash KW - Leaching KW - Solubility PY - 2020 AN - OPUS4-50450 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ghafafian, Carineh T1 - Localized repairs for wind turbine rotor blades N2 - The effect of localized repairs on the structural integrity and thus the lifespan of wind turbine rotor blade shells is examined. T2 - SAMPE Symposium 2020 CY - Kassel, Germany DA - 17.02.2020 KW - GFRP KW - Wind turbine blade shells KW - Scarf joint repairs KW - Sandwich PY - 2020 AN - OPUS4-50480 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - von der Au, Marcus T1 - HR-CS-GF-MAS as a new screening method for emerging pollutants - per- and polyfluorinated substances in the environment N2 - The introduction of fluorine in organic molecules leads to new chemical/physical properties. Especially in the field of pharmaceuticals, fluorinated organic molecules are becoming more and more popular and at present amount up to 25% of market share, with an upward trend. The main benefits of fluorinated pharmaceuticals are: (i) enhanced fat solubility; (ii) enhanced interaction of catalytic-center of enzymes with fluorine-drugs; (iii) a delayed metabolism within the human body. Highly fluorinated organic substances are also used in technical applications (e.g. coatings, fire-extinguishing agents). Due to the broad variety of fluorinated substances and increasing production volumes numerous and up to date unknown fluorine-species are most likely to be present in the (aquatic) environment. Analytical methods to assess the degree of contamination of surface waters with organically bound fluorine are highly needed and up to now only combustion ion chromatography based method is available, which is relatively laborious. Since a few years’ high resolution-continuum source-graphite furnace atomic absorption spectrometers (HR-CS-GFAAS) are commercially available from Analytik Jena. By means of this technique, the detection of high resolution molecular absorption spectra (MAS) is enabled. Thus, fluoride is detectable upon the addition of a modifier and the formation of a diatomic molecule (e.g. GaF). Just recently, we applied this technique for total fluorine (mainly dissolved fluoride) analysis in river water samples. In the present work a HR-CS-GFMAS method for extractable organically bound fluorine (EOF) analysis in surface water samples was developed by us. The method is based on SPE extraction of organically bound fluorine even in the presence of high fluoride concentrations followed by HR-CS-GFMAS analysis upon elution. Due to high enrichment factors, LODs in the low ng/L range were achieved. We successfully applied our SPE HR-CS-GFMAS method to Rhine water samples and EOF in the range of about 50-300 ng/L was detectable. T2 - DGMS 2020 CY - Münster, Germany DA - 01.03.2020 KW - SPE HR-CS GF MAS PY - 2020 AN - OPUS4-50503 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hein, Sebastian T1 - Ansätze und Herausforderungen für das QM-System einer Ressortforschungseinrichtung N2 - Die BAM betreibt ein QM-System, das stark an der DIN EN ISO/IEC 17025 orientiert ist und welches in den meisten Fachabteilungen durch Akkreditierungen untersetzt wird. Mit der Zunahme der Forschungsaktivitäten in den letzten Jahren ist der DFG-Kodex zur Sicherstellung der Guten wissenschaftlichen Praxis deutlicher in den Fokus des Qualitätsmanagements gerückt. Der Vortrag zeigt auf, welche QM-Anforderungen an die Leistungen der BAM gestellt werden und mit welchen Instrumenten sie diese umsetzt, so dass Gute wissenschaftliche Praxis und Akkreditierungen gut harmonieren können. T2 - QM-Seminar; Robert-Koch-Institut CY - Berlin, Germany DA - 21.01.2020 KW - Qualitätsmanagement KW - Gute wissenschaftliche Praxis PY - 2020 AN - OPUS4-50311 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gojani, Ardian T1 - Combined Raman and LIBS using Spatial Heterodyne Spectrometer with High Repetition Rate Laser N2 - Spatial heterodyne spectroscopy is used for Raman and laser-induced breakdown spectroscopy of six rocks with various mineral content, using high repetition rate diode-pumped solid state lasers. While LIBS data are obtained for all samples, Raman signal was determined only for half of those. This work shows that it is possible to combine LIBS and Raman spectrometry into a single instrument consisting of a DPSS laser for excitation and SHS for spectral recording. For better results and gain from complementary spectrochemical information that the system provides, it is necessary to optimize light collection. T2 - 2020 Winter Conference on Plasma Spectrochemistry CY - Tucson, Arizona, USA DA - 13.01.2020 KW - Laser-Induced Background Spectroscopy KW - Spatial heterodyne spectroscopy KW - Raman spectroscopy PY - 2020 AN - OPUS4-50265 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marquardt, Julien T1 - Investigating the morphology of nanostructured mixed metal oxides (Ir/TiOx) and its impact on the electrocatalytic OER-activity N2 - The electrocatalytic conversion of water into molecular hydrogen and oxygen under the utilization of excess renewable energies, such as wind power, photovoltaics and hydroelectric power is one possible pathway to establish a sustainable hydrogen economy. The obtained hydrogen is either stored and used in a fuel cell or consumed on-site in industrial applications. Water electrolysis systems (WES) are based on two half cell reactions, such as oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) which both proceed simultaneously. The OER suffers from slow reaction kinetics and thus limits the overall performance. The most promising compounds in acidic electrolysis are IrO2 and RuO2. Due to their rare abundance and extremely high price a wide use of acidic WES was prevented. Lowering the catalysts noble metal content by mixing iridium with titanium reduces the production costs. Thin films are produced by dip coating a solution of metal oxide precursors alongside with a polymer template dissolved in ethanol. The obtained samples are subsequently calcined to the remove the template and adjust crystallinity. Finally, an additional iridium deposition step was performed on the outer surface plane area. Understanding the influence of structural and morphological aspects on the OER-activity is beneficial to further optimize WES. The current presentation will thus give detailed insights to structural aspects obtained by Raman spectroscopy, small- and wide-angle X-ray scattering which are then combined with electrochemical parameters to deduce structure-activity relationships. T2 - Joint Polish-German Crystallographic Meeting 2020 CY - Wrocław, Poland DA - 24.02.2020 KW - nanostructured KW - electrocatalysis PY - 2020 AN - OPUS4-50664 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raysyan, Anna T1 - Determination of mycotoxins in food and pharmaceuticals by immunochemical analysis N2 - Mycotoxins are toxic secondary metabolites produced by filamentous fungi. The contamination of mycotoxins in food and feed products has been recognized to be an important safety issue for human and animal health. In the context of food safety, medical herbs nowadays are also considered as potential source of mycotoxins. Considering that mycotoxins are generally stable compounds and could not be destroyed completely during food-processing operations, prevention of contamination is identified as main issue. Currently, biochemical, and immunochemical methods based on the use of antibodies as a specific recognition bioreagents are increasingly found to be applied in screening. Along with good common enzyme linked immunosorbent assay (ELISA), more and more widely used method is fluorescence polarization immunoassay (FPIA). These methods help to monitor of many toxic substances in large number of samples and carried out quickly, easily, cheaply, and give good results in quantifying the one or more substances. That is why the use of immunochemical methods of analysis, such as ELISA and FPIA, is the most promising for solving this problem. Thus, the aim of our work is to optimize the determination of mycotoxins by ELISA and FPIA in medical herbs. We selected antibodies and a tracer for the FPIA, then we constructed obtained a calibration curve and determined the sensitivity of this method for the samples in aqueous media. Then, the optimal sample preparation was elaborated: for spiked nuts samples were selected and prepared and a calibration curve was obtained with respect to the matrix effect. After that, the analysis of spiked nuts samples was performed by ELISA and FPIA and the sensitivity of both methods was compared. T2 - Global Food Science Student Competition CY - Jiangnan University, Wuxi, China DA - 14.11.2018 KW - Mycotoxins KW - FPIA KW - ELISA PY - 2018 AN - OPUS4-50048 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauw, Brian Richard T1 - An Ultra-SAXS Instrument on a Shoestring Budget T2 - SAS2015 CY - Berlin, Germany DA - 2015-09-13 PY - 2015 AN - OPUS4-34733 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauw, Brian Richard T1 - Looking at Nothing: life with a weblog T2 - SAS2015 CY - Berlin DA - 2015-09-13 PY - 2015 AN - OPUS4-34735 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauw, Brian Richard T1 - The Future of SAXS T2 - SAS2015 CY - Berlin, Germany DA - 2015-09-13 PY - 2015 AN - OPUS4-34736 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Nele T1 - XPS-Study of a New Azidation Method of Silicon Nitride T2 - Potsdam Days on Bioanalysis 2015 CY - Potsdam DA - 2015-11-04 PY - 2015 AN - OPUS4-34739 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Tobias T1 - Detection of CaCl2 in cement by LIBS T2 - 8th Euro-Mediterranean Symposium on Laser-Induced Breakdown Spectroscopy 2015 (EMSLIBS 2015) CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-34762 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Salg, Steffen T1 - Wie beeinflussen nicht-atmosphärische Bedingungen das Deflagrationsverhalten? T2 - 12. Fachtagung Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen DA - 2015-11-05 PY - 2015 AN - OPUS4-34790 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knechtel, Sophie T1 - Modellierung des Hauptbrandszenarien von flüssigem Wasserstoff (LH2) mittels CFD T2 - 12. Fachtagung Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen DA - 2015-11-05 PY - 2015 AN - OPUS4-34791 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grunewald, Thomas T1 - Einfluss von Werkstroffparametern auf die relative Zündhäufigkeit von Brenngas/Luft-Gemischen bei Edelstahl-Schlagvorgängen - Ergebnisse des Forschungsvorhabens NAMES T2 - 12. Fachtagung Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen, Deutschland DA - 2015-11-05 PY - 2015 AN - OPUS4-34782 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - Near Real-Time Reconstruction of 2D Soil Gas Distribution from a Regular Network of Linear Gas Sensors T2 - IEEE SENSORS 2015 CY - Busan, South Korea DA - 2015-11-01 PY - 2015 AN - OPUS4-34822 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Habel, Wolfgang T1 - Improved reliability and efficiency of SHM systems by advanced standardization T2 - 32nd Danubia-Adria Symposium 2015 CY - Stary Smokovec, Slovakia DA - 2015-09-23 PY - 2015 AN - OPUS4-34643 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pelkner, Matthias T1 - Zerstörungsfreie Prüfung von Feinblechen T2 - Sensor & Test CY - Nürnberg DA - 2015-05-19 PY - 2015 AN - OPUS4-34648 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pelkner, Matthias T1 - Zerstörungsfreie Prüfung von Feinblechen T2 - Control CY - Stuttgart DA - 2015-05-05 PY - 2015 AN - OPUS4-34649 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas T1 - Radsatzwellenprüfung im eingebauten Zustand T2 - DACH-Jahrestagung 2015 CY - Salzburg DA - 2015-05-11 PY - 2015 AN - OPUS4-34650 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kruschwitz, Sabine T1 - Comparison of non-destructive moisture measurement methods on cement and calcium sulphate based screed samples T2 - NDT-CE 2015 CY - Berlin, Germany DA - 2015-09-15 PY - 2015 AN - OPUS4-34651 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kruschwitz, Sabine T1 - Multi-sensor investigation of concrete moisture using ultrasound, radar and microwave T2 - NDT-CE 2015 CY - Berlin, Germany DA - 2015-09-15 PY - 2015 AN - OPUS4-34652 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baumann, Axel T1 - Membrane proteine folding into solid-supported lipidic nandisc during cell-free exression: in-situ observation by Surface Enhanced IR Absorption Spectroscopy T2 - Faltertage 2015 CY - Halle (Saale), Germany DA - 2015-10-22 PY - 2015 AN - OPUS4-34842 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fettig, Ina T1 - Method development for mercury specification in biota T2 - SETAC GLB "Ökotoxikologie und Umweltchemie" CY - Zürich DA - 2015-09-07 PY - 2015 AN - OPUS4-34904 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balcazar Pust, Emilio T1 - Hotspots as Ignition Sources in Micro Reactors T2 - ESCRE 2015 - European Symposium on Chemical Reaction Engineering CY - Fürstenfeldbruck DA - 2015-10-27 PY - 2015 AN - OPUS4-34908 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oesch, Tyler T1 - In-situ CT investigation of pull-out failure for reinforcing bars embedded in conventional and high-performance concretes N2 - The use of high-performance concretes holds great promise for many structural applications. This paper investigates the performance of these materials when used in combination with traditional reinforcing bars. An improved understanding of failure during reinforcing bar pull-out from high-performance concretes is needed in order to better predict the embedment length required to develop full reinforcing bar pull-out strength and the required thickness of reinforcing bar cover for adequate corrosion protection. The cracking structures surrounding the reinforcing bars were analyzed using x-ray computed tomography (CT) in order to determine the stress states causing failure. This was accomplished by conducting in-situ reinforcing bar pull-out experiments during CT scanning. A conventional concrete, a high-strength concrete, and a high-strength fiber reinforced concrete were all tested during the experiments. The results of these experiments showed that the levels of brittleness of the different concrete materials had a major impact on the failure mechanisms that they experienced during reinforcing bar pull-out. It was also clear that the specimen geometry and the casting method had a major impact on fiber orientation. The inclusion of fibers within concrete was also found to significantly improve strength and corrosion protection during reinforcing bar pull-out. T2 - 6th Conference on Industrial Computed Tomography CY - Wels, Austria DA - 09.02.2016 KW - Fiber KW - Reinforcing Bar KW - Computed Tomography KW - In-Situ KW - High-Performance Concrete PY - 2016 AN - OPUS4-35521 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Taabache, Soraya T1 - Microfluidic-Assisted Self-Assembly of Dendritic Amphiphiles N2 - The controlled production of supramolecular aggregates formed by the self-assembly of dendritic amphiphiles is of great interest owing to their potential application in the fields of nanotechnology and nanomedicine. Dendritic amphiphiles as building blocks offer the advantage that their structure and size can be precisely tuned through organic synthesis. This synthetic flexibility enables the fine-tuning of the hydrophobic to hydrophilic ratio of the dendritic segments, which mainly controls the morphology of the self-assembled structures. A promising method for the controlled preparation of supramolecular assemblies is based on the use of micromixers.[5,6] Due to their mixing times in the range of milliseconds at the microscale level, the application of such microfluidic systems benefits from a high mixing efficiency, a low mixing time and a reproducible synthesis compared to conventional batch-based techniques such as the solvent injection method or the film hydration method. Herein, we report on the microfluidic-assisted self-assembly of several dendritic amphiphiles and the impact of the mixing parameters on the self-assembly process. T2 - Makromolekulares Kolloquium 2016 CY - Freiburg im Breisgau, Germany DA - 24.02.2016 KW - Dendritic amphiphiles KW - Self-assembly KW - Dendrimersomes KW - Micromixer KW - Microfluidic PY - 2016 AN - OPUS4-35477 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank T1 - Gefahrguttanks N2 - Einführung in die Gefahrgutvorschriften ADR/RID Bewertungskonzepte für Druckbehälter und Gefahrguttanks Berücksichtigung auslegungsüberschreitender Belastungen Forschungsergebnisse T2 - Wirtschaft trifft Wissenschaft CY - Cottbus - Senftenberg, Germany DA - 10.03.2016 KW - Gefahrgutvorschriften KW - Wärmebehandlung PY - 2016 AN - OPUS4-35549 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dümichen, Erik T1 - Mikrobielle Besiedlung von Mikroplastik aus kommerziellen Produkten T2 - Fluss. Stadt. Land. Gewässer im Wandel - Jahrestagung der Deutschen Gesellschaft für Limnologie und der deutschsprachigen Sektionen der SIL CY - Essen, Deutschland DA - 2015-09-21 PY - 2015 AN - OPUS4-34288 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nützmann, Kathrin T1 - Light Furnace for Fast Phase Formations in Growing Scales T2 - MS & T CY - Columbus, Ohio, USA DA - 2015-10-04 PY - 2015 AN - OPUS4-34355 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bandow, Nicole T1 - Cd pigments from artist's paints: Risk of transfer to soil and groundwater by fertilization using sewage sludge T2 - Goldschmidt CY - Prag, Czech Republic DA - 2015-06-16 PY - 2015 AN - OPUS4-34357 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bandow, Nicole T1 - Einfluss der Alterung auf die Freisetzung von Schadstoffen aus Mikroplastik T2 - SETAC GLB 2015 CY - Zürich, Schweiz DA - 2015-09-07 PY - 2015 AN - OPUS4-34358 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hohberg, Michaela T1 - Production process and characterization of sensitized all elastomeric POF T2 - The 24th International Conference on Plastic Optical Fibers (POF 2015) CY - Nuremberg, Germany DA - 2015-09-22 PY - 2015 AN - OPUS4-34326 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Siebler, Daniel T1 - Optical-only detection of partial discharge with fluorescent polymer optical fiber sensors T2 - Eurosensors 2015 CY - Freiburg, Germany DA - 2015-09-06 PY - 2015 AN - OPUS4-34328 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Influence of a nanoscale confinement on the dynamics of a discotic liquid crystal T2 - Neutron Scattering on Nano-Structured Soft Matter: Synthetic- and Bio.Materials CY - Tutzing, Germany DA - 2015-10-05 PY - 2015 AN - OPUS4-34569 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yin, Huajie T1 - Thermal and Dynamic Glass Transition of Ultrathin Films of Homopolymers and Their Blends T2 - 27th GCCCD Annual Conference CY - Jena, Germany DA - 2015-08-28 PY - 2015 AN - OPUS4-34589 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hentrich, D. T1 - Monolayer-controlled biomimetic calcium phosphate mineralization: effect of a cholesterol-based Newkome amphiphile T2 - Ostwald Kolloquium CY - MPI-KGF Potsdam, Germany DA - 2015-09-28 PY - 2015 AN - OPUS4-34590 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Léonard, Fabien T1 - Use of distance transforms and correlation maps for advanced 3D analysis of impact damage in composite panels T2 - 2nd International Conference on Tomography of Materials and Structures CY - Quebec, Canada DA - 2015-06-29 PY - 2015 AN - OPUS4-34600 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaal, Mate T1 - Luftultraschallprüfung von CFK mit senkrechter Einschallung und Schrägeinschallung T2 - DACH-Jahrestagung 2015 CY - Salzburg (Österreich) DA - 2015-05-11 PY - 2015 AN - OPUS4-34601 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Stable aqeous niobium carbide suspensions for production of homogeneous hard materials N2 - Hard materials consist of a hard phase embedded in a metallic binder. In order to achieve high toughness and strength, it is necessary to have a perfect mixing of hard phase and binder, which is mainly achieved by ball milling. Niobium carbide (NbC) has a high potential to substitute tungsten carbide as hard material. The publication presents the development of stable homogeneous and de-agglomerated NbC-dispersions. To prevent agglomeration of the powder, stable suspensions were achieved by surface treatments with the dispersants (PD and HD), which resulted in a charge reversal from a negative to a positive zeta potential. This surface-modified powder guaranteed a stable re-dispersion in the binder suspension. Nickel powder was added as metallic binder. This suspension was suited for 3D-printing. The green samples could be sintered in vacuum or Argon atmosphere. T2 - 91. Jahrestagung der deutschen keramischen Gesellschaft CY - Freiberg, Germany DA - 07.03.2016 KW - Niobium carbide powder KW - Stable suspensions KW - Reduction of agglomerates PY - 2016 AN - OPUS4-35636 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wu, Cheng-Chieh T1 - Inverse finite element adjustment of material parameters from integrated analysis of displacement field measurement N2 - The integration of finite element method (FEM) into the least-squares adjustment presented in is further extended for a joint evaluation of an elastostatic model and displacement field measurement. For linear solids which obey the Hooke's law, the material parameters determination from measurements is being examined. T2 - 32nd Danubia-Adria Symposium on advances in experimental mechanics CY - Starý Smokovec, Slovakia DA - 22.09.2016 KW - Integrated analysis KW - Inverse problem KW - Finite element method KW - Least-squares adjustment KW - Model and measurement based analysis PY - 2015 AN - OPUS4-35648 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bierstedt, Andreas T1 - Development of a laser induced plasma ion source coupled to ambient mass spectrometry N2 - Only a few years after the invention of the laser, the concept of laser microprobe mass spectrometry (LMMS), a technique which employed intense laser radiation for ion generation, was introduced. In these early studies at excessive irradiation microplasma formation could be observed to be an effective channel for ion formation. However, this plasma generation in vacuum led to undesired distortions of the mass analyzers and, thus, was discarded as an analytical ion source. Under ambient conditions, the surrounding air effectively cools the plasma cloud, making the plasma more controllable. The resulting laser induced plasma is nowadays commonly used in laser induced breakdown spectroscopy (LIBS) applications as excitation source for optical emission spectroscopy experiments. However, little effort has been made to introduce a LIBS plasma as a promising ion source for ambient mass spectrometry. The main hindrance is the transient character of laser induced plasmas that typically only has a lifetime on the order of several microseconds. This drastically reduces the duty cycle of these plasma sources. After these microseconds, the generated ions recombinate to uncharged atoms and even newly bound molecules, making them inaccessible to mass-to-charge analyzers. The advent of high repetition lasers together with the ever growing knowledge about manipulation of charged species at atmospheric pressures allow overcoming these obstacles. This presentation will introduce an ionization scheme using a laser induced plasma as the primary ion source. We believe that this novel ionization strategy will pave the way for future applications in ambient mass spectrometry. T2 - 5. Berliner Chemie Symposium CY - Berlin, Germany DA - 12.04.2016 KW - Laser induced plasma KW - Time-of-flight mass spectrometry KW - Ambient mass spectrometry KW - Ionization KW - Laser induziertes Plasma KW - Flugzeitmassenspektrometer KW - Atmosphärendruckmassenspektrometrie KW - Ionisierung PY - 2016 AN - OPUS4-35732 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, André T1 - Experimental Investigation of RAM Packages Impact Limiters T2 - Waste Management Conference 2014 (WM2014) CY - Phoenix, AZ, USA DA - 2014-03-02 PY - 2014 AN - OPUS4-30277 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auster, Jürgen T1 - Leakage Testing During Lateral Displacement of Metallic Seals Under Mechanical Accident Impact T2 - 17th International Symposium on the Packaging and Transportation of Radioactive Materials (PATRAM 2013) CY - San Francisco, CA, USA DA - 18.08.2013 PY - 2013 AN - OPUS4-30278 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Stephan T1 - Hapten design for the production of monoclonal antibodies against Diclofenac T2 - 8. Interdisziplinäres Doktorandenseminar der GDCh CY - Berlin, Germany DA - 2014-02-23 PY - 2014 AN - OPUS4-30280 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schallschmidt, Kristin T1 - Versuch zur olfaktorischen Diskriminierung der Lungenkrebszelllinie A549 durch Honigbienen T2 - 8. Interdisziplinäres Doktorandenseminar CY - Berlin, Germany DA - 2014-02-23 PY - 2014 AN - OPUS4-30285 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Saalfrank, P. T1 - Theoretical NEXAFS investigation of structural defects in graphene: A density functional theory study T2 - Scattering of Atoms and Molecules from Surfaces - SAMS-2 CY - Potsdam, Germany DA - 2013-11-04 PY - 2013 AN - OPUS4-30311 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhne, Robert T1 - A multiplex microarray for environmental analysis T2 - Advances in Microarrays CY - Berlin, Germany DA - 2014-03-10 PY - 2014 AN - OPUS4-30339 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhne, Robert T1 - Parallel analysis of micropollutants in water samples T2 - 8. Interdisziplinäres Doktorandenseminar CY - Berlin, Germany DA - 2014-02-23 PY - 2014 AN - OPUS4-30340 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, R. T1 - Substrate screening with MeCAT - A comparison of strategies for relative protein quantification T2 - DGMS 2014 CY - Frankfurt am Main, Germany DA - 2014-03-02 PY - 2014 AN - OPUS4-30364 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - Glanzmessungen an Aufglasur-Dekoren auf Porzellan T2 - Jahrestagung der Deutschen Keramischen Gesellschaft 2014 CY - Clausthal-Zellerfeld, Germany DA - 2014-03-24 PY - 2014 AN - OPUS4-30391 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hussels, Maria-Teresa T1 - Bispektrales Messverfahren zur lichtartunabhängigen Charakterisierung fluoreszierender Materialien T2 - Colloquium Optische Spektrometrie (COSP) CY - Berlin, Germany DA - 2014-03-17 PY - 2014 AN - OPUS4-30423 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Breithaupt, Mathias T1 - Akkreditierte fotometrische und spektraloptische Messverfahren T2 - Colloquium Optische Spektrometrie (COSP) CY - Berlin, Germany DA - 2014-03-17 PY - 2014 AN - OPUS4-30424 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosner, M. T1 - 87Sr/86Sr isotope determinations of food products: An analytical overvies and case studies for bell pepper, vanilla and garlic T2 - Food Fraud - the Analytical Tools conference CY - York, England DA - 2014-02-27 PY - 2014 AN - OPUS4-30425 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Bärbel T1 - Herstellung formstabiler, vergrabener Kavitäten in LTCC-Multilayern mit modizfiziertem Laminierprozess T2 - Jahrestagung der Deutschen Keramischen Gesellschaft 2014 CY - Clausthal-Zellerfeld, Germany DA - 2014-03-24 PY - 2014 AN - OPUS4-30460 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wachsmuth, Janne T1 - Wellenform basierte Quellenlokalisierung im Vergleich zu konventionellen Methoden T2 - 18. Kolloquium Schallemission CY - Wetzlar, Germany DA - 2011-10-27 PY - 2011 AN - OPUS4-30103 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rades, Steffi T1 - Investigation of Nanoparticles by Auger electron spectroscopy (AES) T2 - 15th European Conference on Applications of Surface and Interface Analysis (ECASIA 13) CY - Cagliari, Italy DA - 2013-10-13 PY - 2013 AN - OPUS4-30131 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hielscher, Stefan T1 - Adhesive, Bonding and Composite Strength Evaluated by Centrifuge Technology T2 - EUROMAT 2013 CY - Seville, Spain DA - 2013-09-08 PY - 2013 AN - OPUS4-30168 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Glamsch, St. T1 - Synchrotron-Radiation (SR) XPS Study of Nitrogen-containing Films on Silicon: Amino- vs. Amidosilanes T2 - 15th European Conference on Applications of Surface and Interface Analysis 2013 - ECASIA'13 CY - Cagliari, Italy DA - 2013-10-13 PY - 2013 AN - OPUS4-30112 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Thorid T1 - OKTETT - Acht auf einen Streich: Verbundfestigkeit vs. Schälwiderstand von Klebebändern T2 - 10. Thementage Grenz- und Oberflächenanalytik CY - Leipzig, Germany DA - 2014-09-02 PY - 2014 AN - OPUS4-31063 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nielow, Dustin T1 - Betriebsfestigkeit von FKV-Schalenstrukturen T2 - SAMPE Symposium 2014 CY - Stuttgart, Germany DA - 2014-02-18 PY - 2014 AN - OPUS4-31014 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nielow, Dustin T1 - Prüfstand für die Evaluation der Betriebsfestigkeit von Rotorblattschalensegmenten T2 - Rotorblätter von Windenergieanlagen CY - Essen, Germany DA - 2014-07-02 PY - 2014 AN - OPUS4-31015 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Mimicking lizard-like surface structures upon ultrashort laser pulse irradiation of inorganic materials N2 - The wetting behavior of material surfaces can be controlled by surface structures. We functionalized inorganic material surfaces, such as steel, titanium alloy and silicon, to modify the wetting behavior using ultrashort laser pulses (fs- to ps-range). The laser processing was performed by scanning the laser beam across the surface of initially polished flat sample material. A combined experimental and theoretical study of the laser processing parameters (peak fluence, scan velocity, line overlap) allowed the identification of different regimes associated with characteristic surface morphologies (laser-induced periodic surface structures, grooves, micro cones, dimples, etc.). Analyses of the surface using optical as well as scanning electron microscopy allowed the identification of morphologies providing the optimum similarity to the natural skin of lizards. For mimicking skin structures of moisture-harvesting lizards towards an optimization of the surface wetting behavior, additionally, a two-step laser processing strategy was established for realizing hierarchical micro- and nanostructures. In this approach, a laser-generated regular array of small dimples was superimposed (step 2) to the micron-scaled capillaries processed before (step 1). Optical focus variation imaging measurements finally revealed the three dimensional topography of the laser processed surfaces derived from lizard skin structures. The functionality of these surfaces was analyzed in view of wetting properties. T2 - E-MRS 2016 Spring Meeting, Symposium C: "Laser-material interactions for tailoring future applications" CY - Lille, France DA - 02.05.2016 KW - Laser-induced periodic surface structures (LIPSS) KW - Femtosecond laser ablation KW - Steel KW - Lizard KW - Wetting PY - 2016 AN - OPUS4-36047 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Tribological properties of femtosecond laserinduced periodic surface structures on metals N2 - Laser-induced periodic surface structures (LIPSS, ripples) were generated on steel and titanium surfaces upon irradiation with multiple linear polarized femtosecond laser pulses (pulse duration 30 fs, central wavelength 790 nm). The experimental conditions (laser fluence, spatial spot overlap) were optimized in a sample-scanning geometry for the processing of large surface areas covered homogeneously by the nanostructures. The irradiated surface regions were subjected to optical microscopy (OM), white light interference microscopy (WLIM) and scanning electron microscopy (SEM) revealing sub-wavelength spatial periods. The nanostructured surfaces were tribologically tested under reciprocal sliding conditions against a sphere of hardened 100Cr6 steel at 1 Hz using paraffin oil and engine oil as lubricants. After 1000 sliding cycles at a load of 1.0 N, the corresponding wear tracks were characterized by OM and SEM. For specific conditions the laser-generated nanostructures endured the tribological treatment. Simultaneously, a significant reduction of the friction coefficient was observed in the laser-irradiated (LIPSS-covered) areas when compared to the non-irradiated surface, indicating the potential benefit of laser surface structuring for tribological applications. T2 - SPIE Photonics West Conference, Symposium "Laser Applications in Microelectronic and Optoelectronic Manufacturing" (LAMOM) XXI CY - San Francisco, CA, USA DA - 13.02.2016 KW - Femtosecond laser ablation KW - Laser-induced periodic surface structures (LIPSS) KW - Tribology KW - Friction KW - Wear PY - 2016 AN - OPUS4-36041 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kirner, Sabrina T1 - Femtosecond laser-induced periodic surface structures on titanium nitride coatings for tribological applications N2 - Laser-induced periodic surface structures (LIPSS) were generated on titanium nitride (TiN) hardcoating surfaces (deposited on metallic substrates) upon irradiation with multiple linearly polarized femtosecond laser pulses in air (30 fs duration, 790 nm wavelength, 1 kHz pulse repetition rate). The conditions were optimized in a sample-scanning geometry for the processing of large surface areas (5 mm x 5 mm) covered homogeneously by nanostructures with sub-wavelength periods ranging between ~200 nm and 700 nm. For these nanostructures the coefficient of friction was characterized under reciprocating sliding condition against a ball of hardened steel at 1 Hz using different lubricants (regime of mixed friction). After 1000 cycles, the corresponding wear tracks were characterized by optical and scanning electron microscopy. High-resolution energy dispersive X-ray analyzes (EDX) allowed the visualization of chemical alterations within the wear tracks. For specific conditions, the nanostructures endured the tribological treatment. Our experiments provide a qualification of the tribological performance of the fs-LIPSS on TiN surfaces. T2 - E-MRS 2016 Spring Meeting, Symposium C: "Laser-material interactions for tailoring future applications" CY - Lille, France DA - 02.05.2016 KW - Femtosecond laser ablation KW - Laser-induced periodic surface structures (LIPSS) KW - Tribology KW - Friction KW - Wear KW - Titanium nitride PY - 2016 AN - OPUS4-36042 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blankenhagel, Paul T1 - Thermal radiation impact of DTBP fireballs N2 - The burning behaviour and thermal radiation of pool fires of organic peroxides (OP) have been studied by several authors in the past. It was shown that mass burning rates, flame temperatures and thus the Surface Emissive Power (SEP) of OP exceed to that of hydrocarbons considerably. These facts lead to further investigations of even dangerous worst case scenarios i.e. related to storage and transportation. A metal drum containing 200 l of DTBP (Di-tert-butyl peroxide) is investigated under a surrounding wood fire. Due to a higher heat flux to the substance, the mass burning rate reaches multiples of an equivalent pool fire and results in several fireballs. The analyses of thermographic camera images and radiometer measurements show higher flame lengths, higher temperatures and therefore increased thermal radiation compared to OP pool fires. The resulting greater safety distances for a DTBP fireball event are discussed. T2 - New Trends in Research of Energetic Materials (NTREM) CY - Pardubice, Poland DA - 20.04.2016 KW - Organic peroxide KW - Pool fire KW - Fireball KW - Thermal radiation KW - Safety distance PY - 2016 AN - OPUS4-36009 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naghib-zadeh, Hamid T1 - High-strength and gas-tight ceramic-ceramic joints by RAB composite tapes N2 - Ceramic components with complex shape cannot be produced frequently by usual ceramic forming and sintering processes. Therefore, numerous joining methods were developed and introduced in industrial scale. Nowadays, multi-stage Mo-Mn-process and active brazing are preferentially used, if temperature-stable and gastight joints are required. Unfortunately, both processes involve cost-intensive thermal processes: hydrogenous atmosphere is essential for metallization in Mo-Mn-process and active brazing takes place under vacuum. Thermal processes can be drastically simplified by using Reactive Air Brazing (RAB). Joining under air atmosphere is an interesting alternative, especially to join oxide ceramic components among themselves. So far, main disadvantage of RAB is low strength of join connections. Aim of this investigation was the development of high-strength, thermal shock resistant and gastight ceramic-ceramic joints by RAB. Therefore, - commercial, silver and copper oxide containing RAB soldering composition was modified by addition of ceramic particles with low thermal expansion coefficients (TEC). Hence, thermal misfit between TEC of solder and ceramic components was significantly reduced. - RAB soldering paste was replaced with newly developed RAB composite tapes, produced by ceramic “doctor blade” technology. Thereby, improved potential exist to tailor the brazing layer relating to composition, thickness and thickness uniformity. Gastight alumina-alumina, alumina-zirconia and zirconia-zirconia joints with strongly improved strength were produced by novel composite tapes. No strength degradation of joints was observed after thermal cycling up to 700°C. T2 - Jahrestagung der Deutschen Keramischen Gesellschaft (DKG) 2016 CY - Freiberg, Germany DA - 07.03.2016 KW - Brazing KW - Compsite tapes KW - Ceramic-ceramc joints PY - 2016 AN - OPUS4-36114 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zientek, Nicolai T1 - Automated data evaluation and modeling of simultaneous 19F-1H medium resolution NMR spectra for online reaction monitoring N2 - The development of innovative medium resolution NMR spectrometers (MR-NMR) is remarkable due to their possible applications in quality control, education, or process monitoring. The use of compact permanent magnets allows to employ NMR devices in an industrial environment without high maintenance requirements and without the need for cryogenic liquids. A benchtop 43 MHz MR-NMR spectrometer was used for reaction monitoring. Quasi-simultaneous proton and fluorine NMR spectra were acquired. Automatic data pretreatment and evaluation methods were applied and compared to quantitative 500 MHz HR-NMR spectroscopy T2 - Quantitative NMR Methods for Reaction and Process Monitoring (NMRPM) Symposium CY - Kaiserslautern, Germany DA - 15.01.2015 KW - Online NMR Spectroscopy KW - 1H-NMR KW - 19F-NMR KW - Reaction Monitoring KW - Benchtop NMR Spectroscopy KW - Process Analytical Technology PY - 2015 AN - OPUS4-36148 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Eckert, Katrin T1 - Gefahrgut-Schnellinfo der Datenbank GEFAHRGUT N2 - Präsentation der Gefahrgut-Schnellinfo der Datenbank GEFAHRGUT T2 - 7. Gefahrgut-Infomarkt CY - Mühldorf am Inn, Germany DA - 10.05.2016 KW - Datenbank GEFAHRGUT KW - Gefahrgut-Schnellinfo KW - Gefahrgut PY - 2016 AN - OPUS4-36213 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Eckert, Katrin T1 - Informationssystem Datenbank GEFAHRGUT N2 - Möglichkeiten der Recherche in der Datenbank GEFAHRGUT T2 - 7. Gefahrgut-Infomarkt CY - Mühldorf am Inn, Germany DA - 10.05.2016 KW - Gefahrgut KW - Datenbank GEFAHRGUT PY - 2016 AN - OPUS4-36214 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Spranger, Holger T1 - THz-ToF techniques for the detection of inherent discontinuities in dielectric materials based on SAFT N2 - The ability to penetrate dielectric materials makes T-rays attractive to reveal discontinuities in polymer and ceramic materials. Changes of travelling time (ToF) and pulse shape due to the interactions of THz pulses with the dielectric material and its inherent discontinuities can be observed. A tomogram of the object under the test can be reconstructed from time of flight diffraction (ToFD) scans if a synthetic focusing aperture (SAFT) algorithm is applied. T2 - 7th International Workshop on Terahertz Technology and Applications CY - Kaiserslautern, Germany DA - 15.03.2016 KW - Terahertz synthetic aperture dielectric materials PY - 2016 AN - OPUS4-36221 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Spranger, Holger T1 - THz-ToFD Tomography with Synthetic-Aperture-Aperture N2 - Terahertz-radiation (T-ray) are electromagnetic waves within a frequency range between 0,3 to 6 THz. T-rays are nonionising! They penetrate plastic, paper, ceramic and fabric. It is promising to use T-Rays for CT-applications to reveal uncertainties in dielectric materials. T2 - 8. THz-PhD-meeting CY - Marburg, Germany DA - 06.08.2013 KW - Terahertz Tomography synthetic aperture PY - 2013 AN - OPUS4-36223 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - Stability assessment of ceramic high dielectric N2 - Resolution of capacitive sensors can be improved enormously by replacement of the dielectric material between the capacitor plates (e.g. air-dielectric) by a dielectric fluid with high permittivity. High dielectric liquid dispersions of ceramic micro and nano powders should be qualified as dielectric fluid with longtime shelf life. For this purpose it was necessary to produce stabilized ceramic suspensions with high particle concentration and to investigate sedimentation processes of the particles. Characterization of particles was done by use of zeta potential measurement, gas adsorption measurements (BET), density measurement with gas pycnometer as well as particle sizing by ultrasound spectroscopy and by use of an optical centrifuge. Shelf life of optimized electrostatic and steric stabilized ceramic suspension was investigated by use of an optical centrifuge, a LUMISizer 651 MW (LUM Ltd.) with STEP technology and front tracking analysis. Two different wave lengths – NIR (865 nm) and blue light (470 nm) were available for examination. Centrifugation measurements with different rotation speed were used to study the rheological behavior and the sedimentation process. By this way it was possible to achieve accelerated stability determination. Measured values could be used to simulate the sedimentation process under gravity acceleration and to predict shelf life for suspensions with different dispersants. T2 - PARTEC 2016 CY - Nürnberg, Germany DA - 19.04.2016 KW - Ceramic dispersion KW - Stability assessment KW - Analytical centrifuge KW - Shelf life prediction PY - 2016 AN - OPUS4-36184 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heck, Christian T1 - Plasmonic gold nanolenses self-assembled by DNA origami N2 - Surface-enhanced Raman scattering (SERS) exploits the enhancement of electromagnetic fields in close vicinity of plasmonic nanostructures. The nanometer-scale spatial arrangement of plasmonic metal nanoparticles and analyte molecules has a significant effect on the observed signal enhancements and represents a great challenge in this technique. Especially interesting effects are expected for complex gold nanolenses (AuNLs), consisting of three or more differently-sized AuNPs. We use DNA origami to assemble AuNLs with 10, 20 and 60 nm AuNPs, arranged in three different geometries. Using correlated AFM and Raman spectroscopy, and probing single AuNLs, we systematically examined the SERS properties of the three different assemblies. T2 - DNA Nanotechnology 2016 CY - Jena, Germany DA - 19.05.2016 KW - gold nanoparticles KW - DNA origami KW - plasmonics PY - 2016 AN - OPUS4-36205 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Wolf, Michael T1 - Informationssystem Datenbank GEFAHRGUT - Kurzinfo N2 - Präsentation der Kurzinfo der Datenbank GEFAHRGUT T2 - 17. Stuttgarter Gefahrguttag CY - IHK Stuttgart, Germany DA - 22.10.2015 KW - Datenbank GEFAHRGUT KW - Kurzinfo KW - Informationssystem PY - 2015 AN - OPUS4-36211 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Wolf, Michael T1 - Informationssystem Datenbank GEFAHRGUT - Modul für radioaktive Stoffe N2 - Vorstellung des neuen Moduls für radioaktive Stoffe der Datenbank GEFAHRGUT T2 - 17. Stuttgarter Gefahrguttag CY - IHK Stuttgart, Germany DA - 22.10.2015 KW - Informationssystem KW - Datenbank GEFAHRGUT KW - Modul für radioaktive Stoffe PY - 2015 AN - OPUS4-36212 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heck, Christian T1 - Gold nanolenses on DNA origami substrates for surface-enhanced Raman scattering N2 - Surface-enhanced Raman scattering (SERS) exploits the enhancement of electromagnetic fields in close vicinity of plasmonic nanostructures, enabling characterization of analytes at the single-molecule level. The nanometer-scale spatial arrangement of plasmonic metal nanoparticles and analyte molecules has a significant effect on the observed signal enhancements and represents a great challenge in this technique. In our work, DNA origami is used as platform for precise positioning of gold nanoparticles (AuNPs). Especially high sensitivities are expected for gold nanolenses (AuNLs), consisting of rows of three or more differently-sized AuNPs. We assembled different AuNL designs and determined respective SERS enhancement factors by collecting Raman spectra from single AuNLs. Finite difference time domain calculations estimate attainable electromagnetic field enhancements. Ultimately, we aim to develop a versatile platform for various SERS applications. T2 - DNA meets Plasmonics Konferenz CY - Bad Honnef, Germany DA - 07.12.2015 KW - DNA origami KW - SERS KW - Plasmonics PY - 2015 AN - OPUS4-35906 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hernández-Gómez, R. A1 - Chamorro, C. R. T1 - Experimental determination of (p, ρ, T) data for binary mixtures of methane and helium N2 - The GERG-2008 and AGA8-DC92 equations of state enable the calculation of thermal and caloric properties for natural gases and other related mixtures consisting of up to 21 pure components. Experimental characterization of the thermodynamic behavior of gas binary mixtures is of great importance because most of the binary systems were taken into account by using adjusted reducing functions for density and temperature. Only for those binary mixtures for which sufficient accurate experimental data were available, specific departure functions were developed. For the binary mixture methane-helium no departure function was developed so far. This work studied the thermodynamic behavior of two gravimetrically prepared methane-helium binary mixtures through accurate (p, ρ, T) experimental data obtained by using a single-sinker densimeter with magnetic suspension coupling. T2 - 19th Symposium on Thermophysical Properties CY - Boulder, CO, USA DA - 21.06.2015 KW - GERG-2008 equation of state KW - Binary mixture KW - Density data PY - 2015 AN - OPUS4-35941 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maurer, G. T1 - High-pressure gas solubility in mixtures with one compound being an „alternative“ solvent N2 - The term „Alternative Solvents“ often refers to ionic liquids (ILs), mainly to distinguish these substances from traditional (i.e., molecular) solvents. In applications, any „alternative“ is required to perform better than something that is proven and tested. To bring ILs into practical use, availability and costs are the fundamental points to be addressed. There are two ways to proceed: ▬ tailoring a molecule, implanting the expected characteristics advantage: optimization of the targeted performance possible risks: outcome not always foreseeable, costly and time-intensive (“trial and error“) ▬ to target on mixtures of well-characterized ILs with molecular solvents advantage: substance characteristics are known, less costly, less time-consuming, mixture composition another tunable parameter risks: the same but with less impact For the basic engineering of technical processes, knowledge of phase equilibria, particularly of mixtures, over a broad (p,T) range is mandatory. This contribution reports on recent experimental results from our laboratory: ▬ the solubility of CO2 in a mixture of water and [bmim][CH3SO4] ▬ the solubility of CO2 in a mixture of methanol and [bmim][PF6] T2 - EUCHEM 2014 5th Conference on Molten Salts and Ionic Liquids CY - Tallinn, Estonia DA - 06.07.2014 KW - Ionic liquids KW - Gas solubility KW - Henry's constant PY - 2014 AN - OPUS4-35944 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalies, G. A1 - Rockmann, R. T1 - Reliable information on solids from liquid-Phase adsorption N2 - For the characterization of disperse and porous solids, usually single gas adsorption(GA) is employed. In the case of liquid adsorption (LA), the extraction of information on solids immediately becomes a more sophisticated matter since information on geometric as well energetic parameters of the solids is both superposed by liquid-mixture effects and displayed in excess terms. We have to ask if reliable solid parameters can be also obtained from LA isotherms. The enlarged data bank of gas and liquid adsorption measurements enables us to change systematically solid parameters (e.g., the pore width of MCM-41, the pore entrances of SBA-16, chemical heterogeneity) and to study in this way the influence of solid parameters on LA. T2 - The FOA 10, 10th International Conference on Fundamentals of Adsorption CY - Awaji Island, Japan DA - 23.05.2010 KW - porous solids KW - gas adsorption KW - excess isotherms PY - 2010 AN - OPUS4-35945 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit A1 - Niebergall, Ute T1 - Comparison of the stress crack resistance of polyethylene grades with the test performance behaviour of packagings for the transport of dangerous goods N2 - Technically high-quality hollow articles made of polyethylene have proved many times their value as dangerous goods packagings. Design type tests according to the international regulations for the transport of dangerous goods - drop test, stacking test, hydraulic pressure test and leakproofness test must be performed for every design type and manufacturer. The properties melt flow rate (MFR), relative density (D), low temperature notched Impact strength (N.I.S.) at -30 °C, environmental stress crack resistance (FNCT) and resistance to oxidative degradation Ox by nitric acid (determined by the increase of MFR) have been selected together with the corresponding test methods and tolerances for a comparison of polyethylene grades of one design type in the procedural rule on suitability proof for alternative plastic resins used for dangerous goods packagings and intermediate bulk containers (IBCs) – EN 15507. We wanted to proof the practical relevance of this standard by comparing the relationship between the results of the FNCT and the times to failure of design types in stacking tests with wetting solution and normal butyl acetate saturated wetting solution. T2 - EUROCORR 2010 CY - Moscow, Russia DA - 13.09.2010 KW - Drop test KW - Stacking test KW - Hydraulic pressure test KW - Leakproofness test PY - 2010 AN - OPUS4-35843 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina A1 - Völker, J. A1 - Scharmach, Martina T1 - Zuverlässigkeit von ZfP-Verfahren - Internationaler Stand der Diskussion im Jahre 2001 N2 - Dieses Poster beschäftigt sich mit den Interessen der Industrie, der ISO 17025 und ISO 9001, den wissenschaftlichen Konzepten, dem European-American-Workshop, der Zuverlässigkeitsformel, der ASNT Reliability ad hoc Group und der EPERC TTF3 T2 - DGZfP Jahrestagung 2001 CY - Berlin, Germany DA - 21.05.2001 KW - ISO 17025 KW - ISO 9001 KW - Zuverlässigkeitsformel PY - 2001 AN - OPUS4-35850 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina A1 - Scharmach, Martina A1 - Henley, S. T1 - Metalldetektor-Testversuche in Afghanistan März 2002 - Auswahl der am besten geeigneten Geräte N2 - Die ROC-Diagramme der Testergebnisse spiegeln eine große Bandbreite in der Detektorleistungsfähigkeit bzw. Zuverlässigkeit wieder sowie den starken Einfluss von unkooperativen Boden bzw. Verunreinigungen während der Einfluss von Feuchtigkeit eher gering ist. T2 - 3rd European-American Workshop on Reliability of NDE and Demining CY - Berlin, Germany DA - 11.09.2002 KW - Zuverlässigkeitsformel KW - IPPTC-Test KW - ROC-Diagramm PY - 2002 AN - OPUS4-35851 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina A1 - Gaal, Mate A1 - Scharmach, Martina A1 - Bär, Sylke A1 - Lewis, A. A1 - Bloodworth, T. A1 - Guelle, D. A1 - Pavkovic, N. A1 - Steker, I. T1 - Metalldetektor-Tests in Oberjettenberg November 2003 - Bundeswehrteststelle WTD 52 N2 - Dieses Poster befasst sich mit Testfeldern und Kalibrierflächen, Training, Minensuche in den Testfeldern, Ausmessung der Minenanzeigen, Dateiangabe und Analyse und dem Ausgraben der gefundenen Minen T2 - ITEP-Workshop 2003 CY - Berlin, Germany DA - 16.12.2003 KW - Testfelder KW - Kalibrierflächen KW - Minensuche PY - 2003 PB - Bundesanstalt für Materialforschung und -prüfung (BAM) CY - Berlin AN - OPUS4-35853 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Roth, C. T1 - Incorporating mechanically interlocked molecules into crystalline coordination networks on surfaces: Electro-active SURMOFs to translate molecular switching into macroscopic function and devices N2 - We aim at preparing, characterising, and applying SURMOFs incorporating electro-active and -switchable mechanically interlocked molecules such as rotaxanes as the basis of functional devices. Preparation and Positioning Synthesis, purification and analytical characterization of electro-switchable rotaxanes suitable for SURMOF-formation as well as Layer-by-Layer assembly on surfaces. Controlled deposition of electro-active SURMOFs and Layer-by-Layer self-assembled multilayers based on these switchable rotaxanes. Construction of SURMOFs on micro-patterned surfaces. Structural Characterisation and Physico-Chemical Properties Electrochemical characterization of these rotaxanes in solution with cyclic voltammetry, chronoamperometry and impedance spectroscopy. Surface characterization of SURMOFs and multilayers with XPS, NEXAFS, AFM, contact-angle measurements, transmission UV/Vis, ToF-SIMS and – in cooperation with partners from SPP – XRD. Development of ToF-SIMS (also assisted by Principle Component Analysis of the fragment-ion data) as a method for imaging and depth-profiling. Development of an appropriate electrochemical cell to perform cyclic voltammetry, chronoamperometry and impedance spectroscopy with SURMOFS and multilayers as working electrodes in a three-electrode cell. Comparison of the structural and electrochemical properties of the redox-active unit in solution, multilayers and SURMOF focusing on the advantages of SURMOFs. System Integration and Function Demonstration Examination of the usability of the electroactive SURMOFS as optoelectronic switch or data storage device with a focus on the robustness of the system. Usage of the SURMOFs as functional electrodes for electrochemical application. Selective switching of ordered nanostructures to translate molecular motion to macroscopic property changes. T2 - Colloquium of the Priority Programme "Coordination Networks: Building Blocks for Functional Systems” SPP 1928 CY - Garching, Germany DA - 30.3.16 KW - SURMOF KW - XPS KW - NEXAFS KW - Characterization PY - 2016 AN - OPUS4-35868 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nguyen, Thi Yen T1 - Paracetamol: Polymorphs and Intermediates T2 - COST Summer-School 2015 CY - Berlin-Adlershof, Germany DA - 2015-11-23 PY - 2015 AN - OPUS4-35261 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fischer, Daniel T1 - Ellipsometric characterization of doped SnOx layers for novel SPR-based gas sensors T2 - DPG Frühjahrstagung CY - Regensburg, Germany DA - 2016-03-06 PY - 2016 AN - OPUS4-35274 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rietz, U. T1 - New approaches for quantitative determination of adhesive tape properties using centrifugal adhesion testing technology (CATT) T2 - EURADH CY - Glasgow, UK DA - 2016-09-21 PY - 2016 AN - OPUS4-35278 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Improving Limits of Detection of Chlorine and Sulfur in Cement with Double Pulse LIBS and Electric Spark Reheating T2 - EMSLIBS CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-35147 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Detection of CaCl in cement by LIBS T2 - EMSLIBS CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-35148 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Tomography of laser-induced plasma using Radon transform technique for temporally and spatially resolved plasma diagnostics T2 - ANAKON 2015 CY - Graz, Österreich DA - 2015-03-23 PY - 2015 AN - OPUS4-35152 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Multivariate classification of Raman spectra from synthetic polymers- an approach for the improved detection of microplastics T2 - 11. Kolloqium Prozessanalytik CY - Wien, Autria DA - 2015-11-30 PY - 2015 AN - OPUS4-35153 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Online Spectroscopy in Microemulsions- A Process Analytical approach for a Hydroformylation MiniplantII- Calibration and prediction by Raman spectra T2 - 11. Kolloqium Prozessanalytik CY - Wien, Austria DA - 2015-11-30 PY - 2015 AN - OPUS4-35154 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Online Spectroscopy in Microemulsions- A Process Analytical approach for a Hydroformylation Miniplant I- Experimental setup and NMR Reaction Montoring T2 - 11. Kolloquium Prozessanalytik CY - Wien, Austria DA - 2015-11-30 PY - 2015 AN - OPUS4-35156 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holzweber, Markus T1 - Charge-transfer gradient from the surface into the bulk of ionic liquids: Is this a driving force for transport phenomena? T2 - Seventh Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 2015-12-10 PY - 2015 AN - OPUS4-35199 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gong, Xin T1 - Simulation of an embedded fibre optical sensor with magnetic field indicator T2 - EUROSENSORS 2015 CY - Freiburg, Germany DA - 2015-09-06 PY - 2015 AN - OPUS4-35210 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ehlert, Christopher T1 - A Detailed Assignment of NEXAFS Resonances of Imidazolium Based Ionic Liquids T2 - Bessy User Meeting CY - Berlin, Germany DA - 2015-12-10 PY - 2015 AN - OPUS4-35212 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ehlert, Christopher T1 - Investigation of NEXAFS Resonances of Self-Assembled Monolayers by Transition Potential Density Functional Theory T2 - Bessy User Meeting CY - Berlin, Germany DA - 2015-12-10 PY - 2015 AN - OPUS4-35213 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Field integration of benchtop NMR instruments for online monitoring and process control of a modular industrial reaction step N2 - Online monitoring and process control requires fast and noninvasive analytical methods, which are able to monitor the concentration of reactants in multicomponent mixtures with parts-per-million resolution. Online NMR spectroscopy can meet these demands when flow probes are directly coupled to reactors, since this method features a high linearity between absolute signal area and sample concentration, which makes it an absolute analytical comparison method being independent on the matrix. Due to improved magnet design and field shimming strategies portable and robust instruments have been introduced to the market by several manufacturers during the last few years. First studies with this technology showed promising results to monitor chemical reaction in the laboratory. Within the project CONSENS, the continuous production of high-value products in small production scale is advanced by introducing benchtop NMR spectroscopy. CONSENS is a research and innovation project on integrated control and sensing for sustainable operation of flexible intensified processes. This poster will present the first steps of the process integration of a benchtop NMR instrument for a lithiation process and outlines further fields of activity and potential challenges. Hereby, the following issues are going to be addressed: explosion-proof housing for the spectrometer, automation of signal processing (data pretreatment, evaluation and communication to the control system), flow cells and measuring conditions. Furthermore, first online spectra of the lithiation reaction in batch mode were acquired in lab scale. The reaction was performed in a 25 mL glass reactor with thermal jackets for temperature control of the reaction mixture. The Li-HMDS was dosed stepwise by using a glass syringe. First spectra in the proton and fluorine domain were recorded online using a flowrate of 3.5 mL min–1 and a simple 5 mm polytetrafluoroethylene tube (PTFE) as a flow cell. T2 - 4th Practical Applications of NMR in Industry Conference (PANIC) CY - Houston, Texas, USA DA - 15.02.2016 KW - Reaction monitoring KW - Online NMR spectroscopy PY - 2016 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-354427 AN - OPUS4-35442 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - qNMR under pressure - applications on compressed and liquefied gases N2 - During the last years quantitative NMR spectroscopy has become a general method for solving complex problems in science and industry. The opportunity of a calibration-free quantification, related to a simple counting of the nuclear spins in the active volume of the spectrometer represents a key advantage comparing to other analytical techniques. With modern NMR systems detection limits in the lower ppm range on a molar basis are accessible in a reasonable time period, which makes it a promising method for purity assessment, as well as applications in metrological research. First experiments showed that qNMR is suitable for gas analysis with respect to components used for production of primary reference gas mixtures. For this a laboratory setup for high-pressure NMR experiments up to 20 MPa (2900 psi) in fluid and gas phase was built and tested. In this work we show the determination of the composition of high precision mixtures, consisting of liquid and liquefied hydrocarbons commonly supplied in floating piston cylinders. Therefore an experimental setup was developed allowing sampling, as well as circulation of the mixture within a high-pressure NMR tube by using a concentric tubing assembly. Additionally, a piston-cylinder pressure cell was designed and manufactured allowing wide-range volume displacement. Mainly intended for density variation within supercritical fluid experiments, it can also function as a compression element for further increasing of gas-pressure in the system. Equipped with liquid thermostat and a motor-powered screw drive unit it is designed to operate at pressure levels up to 60 MPa (8700 psi) and temperatures up to 130 °C. T2 - 4th Annual practical applications of NMR in industry conference (PANIC) CY - Houston, TX, USA DA - 15.02.2016 KW - Gas-phase NMR KW - High-pressure NMR KW - Liquefied gases PY - 2016 AN - OPUS4-35435 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bierstedt, Andreas T1 - Laser induced plasma ion source for ambient mass spectrometry N2 - Laser microprobe mass analysis (LMMS) employs local ionization by a focused laser and subsequent mass analysis. At excessive irradiation microplasmas led to undesired distortions. Thus, LMMS was discarded as promising ion source. Effective cooling under ambient conditions resulted in more controllable plasmas and development of laser induced breakdown spectroscopy (LIBS). However, little effort has been made to combine LIBS and ambient MS, since these plasmas only provide microsecond lifetimes. After these, recombination yields uncharged and newly bound species, making them inaccessible for MS. The combination of high repetition rate lasers together with growing knowledge about manipulation of charged species at atmospheric pressure allow overcoming these obstacles. T2 - 49. Jahrestagung der Deutschen Gesellschaft für Massenspektrometrie (DGMS) CY - Hamburg, Germany DA - 28.02.2016 KW - laser induced plasma KW - ion source KW - ambient mass spectrometry KW - emission spectroscopy KW - laser induziertes Plasma KW - Ionenquelle KW - Atmosphärendruck-Massenspektrometrie KW - Emissionsspektroskopie PY - 2016 AN - OPUS4-35454 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kotschate, Daniel T1 - Three dimensional examination of directivity pattern in immersion tank testing T2 - 7th international symposium on NDT in aerospace CY - Bremen DA - 2015-11-16 PY - 2015 AN - OPUS4-34000 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Odour reference materials and training concepts for sniffer dogs T2 - International Association of Breath Research Summit 2015 CY - Wien (Österreich) DA - 2015-09-14 PY - 2015 AN - OPUS4-33981 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Odour reference material and training concepts for sniffer dogs T2 - International Conference on Medical Bio-Detection CY - Cambridge (England) DA - 2015-09-15 PY - 2015 AN - OPUS4-33984 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Shokouhi, P. T1 - Fusion of multi-sensory NDT data for reliable detection of surface cracks: Signal-level vs. decision-level T2 - 42nd Review of Progress in Quantitative Nondestructive Evlauation (QNDE) CY - Minneapolis, USA DA - 2015-07-25 PY - 2015 AN - OPUS4-33961 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaal, Mate T1 - Luftultraschallwandler aus zellulärem Polypropylen T2 - Messe CONTROL CY - Stuttgart DA - 2015-05-05 PY - 2015 AN - OPUS4-33940 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaal, Mate T1 - Luftultraschallwandler aus zellulärem Polypropylen T2 - Messe SENSOR + TEST CY - Nürnberg DA - 2015-05-18 PY - 2015 AN - OPUS4-33942 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Barnefske, Lena T1 - Mechanically Reinforced Silicone Rubber by Surface Functionalized Polyorganosiloxane Nanoparticles T2 - European Polymer Congress EPF 2015 CY - Dresden, Germany DA - 2015-06-21 PY - 2015 AN - OPUS4-33603 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sieksmeyer, Thorben T1 - Molecular evolution of the transcription factor Relish in the genus Lasius (Hymenoptera: Formicinae) T2 - International Union for the Study of Social Insects 2015 CY - Lichtenfels, Germany DA - 26.03.2015 PY - 2015 AN - OPUS4-33590 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lorenzetti, A. T1 - Effect of Expansion Rate and Intercalaton Compounds on Flame Retardancy of Expandable Graphite in Polyurethane Rigid Foams T2 - FRPM 2015, 15th European Meeting on Fire Retardancy and Protection of Materials CY - Berlin, Germany DA - 2015-06-22 PY - 2015 AN - OPUS4-33631 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Patrick T1 - Fire Performance of Epoxy Resin Modified with Melamine Poly(Metal Phosphate) T2 - FRPM 2015, 15th European Meeting on Fire Retardancy and Protection of Materials CY - Berlin, Germany DA - 2015-06-22 PY - 2015 AN - OPUS4-33632 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Fire resistance of photovoltaic modules T2 - FRPM 2015, 15th European Meeting on Fire Retardancy and Protection of Materials CY - Berlin (BAM), Germany DA - 2015-06-22 PY - 2015 AN - OPUS4-33633 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Despinasse, Marie-Claire T1 - Detection of Hydrogen during the smouldering of furnishings T2 - FRPM 2015, 15th European Meeting on Fire Retardancy and Protection of Materials CY - Berlin (BAM), Germany DA - 2015-06-22 PY - 2015 AN - OPUS4-33634 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Stephan T1 - Entwicklung monoklonaler Antikörper gegen Diclofenac T2 - 2. Forum Junger Umweltwissenschaftler CY - Blomber, Germany DA - 2015-06-22 PY - 2015 AN - OPUS4-33642 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - CN and C2 formation in laser induced plasmas of isotopic labeled target substances T2 - EMSLIBS CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-35145 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - High speed sorting of scrap metal based on meta-modeling T2 - EMSLIBS CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-35146 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kern, Simon T1 - First steps towards field integration of benchtop NMR spectroscopy for online monitoring and process control N2 - Online monitoring and process control requires fast and noninvasive analytical methods, which are able to monitor the concentration of reactants in multicomponent mixtures with parts-per-million resolution. Online NMR spectroscopy can meet these demands when flow probes are directly coupled to reactors, since this method features a high linearity between absolute signal area and sample concentration, which makes it an absolute analytical comparison method being independent on the matrix. Due to improved magnet design and field shimming strategies portable and robust instruments have been introduced to the market by several manufacturers during the last few years. First studies with this technology showed promising results to monitor chemical reaction in the laboratory. Within the project CONSENS, the continuous production of high-value products in small production scale is advanced by introducing MR-NMR spectroscopy. CONSENS is a research and innovation project on integrated control and sensing for sustainable operation of flexible intensified processes. This poster will present the first steps of the process integration of a benchtop NMR instrument for a lithiation process and outlines further fields of activity and potential challenges. Hereby, the following issues are going to be addressed: explosion-proof housing for the spectrometer, automation of signal processing (data pretreatment, evaluation and communication to the control system), flow cells and measuring conditions. Additionally, the first results of the lithiation reaction in lab scale regarding the pure components and reaction mixtures are going to be discussed. T2 - Small Molecule NMR Conference CY - Baveno, Italy DA - 17.09.2015 PY - 2015 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-351085 AN - OPUS4-35108 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kern, Simon T1 - First steps towards field integration of benchtop NMR spectroscopy for online monitoring and process control N2 - Online monitoring and process control requires fast and noninvasive analytical methods, which are able to monitor the concentration of reactants in multicomponent mixtures with parts-per-million resolution. Online NMR spectroscopy can meet these demands when flow probes are directly coupled to reactors, since this method features a high linearity between absolute signal area and sample concentration, which makes it an absolute analytical comparison method being independent on the matrix. Due to improved magnet design and field shimming strategies portable and robust instruments have been introduced to the market by several manufacturers during the last few years. First studies with this technology showed promising results to monitor chemical reaction in the laboratory. Within the project CONSENS, the continuous production of high-value products in small production scale is advanced by introducing MR-NMR spectroscopy. CONSENS is a research and innovation project on integrated control and sensing for sustainable operation of flexible intensified processes. This poster will present the first steps of the process integration of a benchtop NMR instrument for a lithiation process and outlines further fields of activity and potential challenges. Hereby, the following issues are going to be addressed: explosion-proof housing for the spectrometer, automation of signal processing (data pretreatment, evaluation and communication to the control system), flow cells and measuring conditions. Additionally, the first results of the lithiation reaction in lab scale regarding the pure components and reaction mixtures are going to be discussed. T2 - Pro2NMR Autum School CY - Aachen, Germany DA - 08.12.2015 PY - 2015 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-351097 AN - OPUS4-35109 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Online Spectroscopy in Microemulsions- A Process Analytical approach for Hydroformylation Miniplant I- Experimental setup and NMR Reaction Monitoring T2 - Pro2NMR Autum School 2015 CY - Aachen, Germany DA - 2015-12-08 PY - 2015 AN - OPUS4-35110 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ringleb, F. T1 - CIGS islands for micro-concentrator solar cells T2 - 79. Jahrestagung der Deutschen Physikalischen Gesellschaft (DPG) und DPG Frühjahrstagung CY - Berlin, Germany DA - 2015-03-15 PY - 2015 AN - OPUS4-35168 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kern, Simon T1 - First steps towards field integration of benchtop NMR spectroscopy for online monitoring and process control N2 - Online monitoring and process control requires fast and noninvasive analytical methods, which are able to monitor the concentration of reactants in multicomponent mixtures with parts-per-million resolution. Online NMR spectros-copy can meet these demands when flow probes are directly coupled to reactors, since this method features a high linearity between absolute signal area and sample concentration, which makes it an absolute analytical com-parison method being independent on the matrix. Due to improved magnet design and field shimming strategies portable and robust instruments have been introduced to the market by several manufacturers during the last few years. First studies with this technology showed promising results to monitor chemical reaction in the laboratory. Wthin the project CONSENS (www.consens-spire.eu), the continuous production of high-value products in small production scale is advanced by introducing benchtop NMR spectroscopy. CONSENS is a research and innovation project on inte-grated control and sensing for sustainable operation of flexible intensified processes. This poster will present the first steps of the process integration of a benchtop NMR instrument for a lithiation process and outlines further fields of activity and potential challenges. Hereby, the following issues are going to be addressed: explosion-proof housing for the spectrometer, automation of signal processing (data pretreatment, evaluation and communication to the control system), flow cells and measuring conditions. Furthermore, first online spectra of the lithiation reaction in batch mode were acquired in lab scale. The reaction was performed in a 25 mL glass reactor with thermal jackets for temperature control of the reaction mixture. The Li-HMDS was dosed stepwise by using a glass syringe. First spectra in the proton and fluorine domain were recorded online using a flowrate of 3.5 mL min–1 and a simple 5 mm polytetrafluoroethylene tube (PTFE) as a flow cell. T2 - 11. Kolloquium Prozessanalytik CY - Wien, Autria DA - 30.11.2015 PY - 2015 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-351597 AN - OPUS4-35159 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stroh, Julia T1 - Investigations of Degradation of Cementitious Materials by in-situ Structure Analysis. T2 - Bessy User Meeting CY - Berlin, Germany DA - 2013-12-05 PY - 2013 AN - OPUS4-30617 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steiger, Thomas T1 - COMAR - The international database for certified reference materials T2 - EURACEM Workshop on Quality in Analytical Measurements CY - Lisbon, Portugal DA - 2014-05-19 PY - 2014 AN - OPUS4-30621 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Busch, M. T1 - Thermotropic Orientational Order of Discotics in Nanochannels: An Optical Polarimetry Study and Landau-de Gennes Analysis T2 - 19th German-American Frontiers of Science Symposium CY - Irvine, CA, USA DA - 2014-04-03 PY - 2014 AN - OPUS4-30624 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Haase, A. T1 - Quantitative analysis of silver nanoparticle uptake by cells using LA-ICP-MS T2 - NANOTOX 2014, 7th International Nanotoxicology Congress CY - Antalya, Turkey DA - 2014-04-23 PY - 2014 AN - OPUS4-30637 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhm, S. T1 - Double-fs-pulse generated LIPSS on silicon explained by Surface Plasmon Polaritons T2 - 15th International Symposium on Laser Precision Microfabrication LPM 2014 CY - Vilnius, Lithuania DA - 2014-06-17 PY - 2014 AN - OPUS4-30595 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilder, Constanze T1 - Distributed fibre optic sensors for structural health monitoring of composite materials T2 - Industrial Technologies 2014 CY - Athens, Greece DA - 2014-04-09 PY - 2014 AN - OPUS4-30601 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Busch, M. T1 - Thermotropic Orientational Order of Discotics in Nanochannels: An Optical Polarymetry Study and Landau-de Gennes Analysis T2 - DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM) CY - Dresden, Germany DA - 2014-03-30 PY - 2014 AN - OPUS4-30563 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bienert, Klaus T1 - Qualitätssicherung von Hydrophobierungen mit einem reaktiven Markersystem durch die Laser-Induced Breakdown Spectroscopy (LIBS) T2 - Bauwerksdiagnose 2014 CY - Berlin, Germany DA - 2014-02-13 PY - 2014 AN - OPUS4-31598 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mohamed, Zeinab T1 - Thick coating of polyolefins T2 - Polydays 2014 CY - Berlin, Germany DA - 2014-09-30 PY - 2014 AN - OPUS4-31603 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Rheinland refinery accident 2014: CFD prediction of atmospheric dispersion of smoke T2 - Combustion Research and Application 2014 CY - Soesterberg, Netherlands DA - 2014-10-08 PY - 2014 AN - OPUS4-31586 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Holger T1 - Search for cross-reacting compounds in HPLC fractionated wastewater with an anti-sulfamethoxazole antibody T2 - LC-MS in der Umweltanalytik CY - Leipzig, Germany DA - 2014-06-16 PY - 2014 AN - OPUS4-31614 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Holger T1 - Fractionation of water samples by HPLC for search and separation of cross-reacting compounds for an anti-sulfamethoxazole antibody T2 - Relevanz von Transformationsprodukten im urbanen Wasserkreislauf CY - Koblenz, Germany DA - 2014-09-23 PY - 2014 AN - OPUS4-31615 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pötschke, Samuel T1 - Akkreditierte fotometrische und spektraloptische Messverfahren T2 - 40. Jahrestagung der deutschen farbwissenschaftlichen Gesellschaft (DfwG) CY - Wuppertal, Germany DA - 2014-09-23 PY - 2014 AN - OPUS4-31619 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Martin-Sanchez, Pedro Maria T1 - Contribution of culture-independent methods to the cave aerobiology; the case of Lascaux Cave T2 - International Workshop "The Conservation of Subterranean Cultural Heritage" CY - Seville, Spain DA - 2014-03-24 PY - 2014 AN - OPUS4-31623 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stoppel, Markus T1 - Suitability of Embedded RFID-Sensors for Concrete Bridge Structures T2 - 31st DANUBIA-ADRIA Symposium on Advances in Experimental Mechanics, , 24.09.-27.09.2014 CY - Kempten, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-31642 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - Determination of bile acids in wastewater and surface water samples in Berlin by LC-MS/MS and ELISA T2 - 30th International Symposium on Chromatography (ISC) 2014 Salzburg CY - Salzburg, Austria DA - 2014-09-14 PY - 2014 AN - OPUS4-31643 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - Synthesis and verification of new fluorescence polarization immunoassay tracers for carbamazepine by LC-MS T2 - 30th International Symposium on Chromatography (ISC) 2014 Salzburg CY - Salzburg, Austria DA - 2014-09-14 PY - 2014 AN - OPUS4-31644 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goedecke, Caroline T1 - Heterogeneous photocatalysis - a promising method for the removal of environmental contaminants from water N2 - In recent years advanced oxidation processes have become an important part of research due to their capacity to degrade many environmental pollutants during water treatment. Especially the heterogeneous photocatalysis is a promising method because it often results in a full mineralization of many hazardous organic compounds. However incomplete degradation reactions during this process can result in transformation products due to the oxidative conditions. The transformation products may have a higher toxicity than the precursor substances and are often only partly removed during the waste water treatment. Since a lot of these compounds are still unknown, the transformation products are not detected by target analysis used in sewage treatment plants and are often released into the aquatic ecosystems. Therefore, extensive and effective non-target analytical methods are necessary for the monitoring and identification of the transformation products which can be generated during waste water treatment. Among various semiconductors, titanium dioxide (TiO2) is the most frequently used photocatalyst because of its inexpensiveness, non-toxicity, chemical stability and its high photocatalytic activity. If TiO2 is irradiated with light of an energy higher than the band gap of the semiconductor, electron-hole pairs are generated on the surface of the TiO2, resulting in the formation of active oxidized species such as hydroxyl radicals which can react with environmental pollutants. To study photocatalytic reactions, a model system has been developed to simulate environmental relevant conditions for photocatalytic reactions of organic substances on a laboratory scale. The commonly used pharmaceuticals metformin and gabapentin were selected as model substances because of their high input in waste water and the little information about their occurrence, behavior and fate in the environment. Metformin is the drug of choice for treating type 2 diabetes. The drug therapy for diabetes mellitus has increased significantly in recent years. More than half of the total amount of pharmaceuticals in the environment are the antidiabetic agent metformin and its major transformation product guanylurea. Gabapentin is an analogon of the neurotransmitter γ-aminobutyric acid (GABA) which is used as antiepileptic drug and for the treatment of neuropathic pain. Gabapentin is found in waste water influent in the high ng/L range. First results of the optimization of the photocatalyst and its application are shown. T2 - NonTarget 2016 CY - Ascona, Switzerland DA - 29.05.2016 KW - photocatalysis KW - transformation KW - non target analysis PY - 2016 AN - OPUS4-36381 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mülow-Stollin, Ulrike T1 - Extensive study of the fate of triazole fungicides using model systems N2 - In order to provide nutrition for a growing world population pesticides are a necessary tool. Crop protection agents may be considered safe, if handled correctly. Nevertheless, they are subject to transformation processes and metabolisation in the environment and technical installations. Transformation products (TP) and metabolites may exhibit properties other than those of the mother substance. They can be more harmful and thereby pose a threat to environmental and human health. With 19 % market share in 2014, triazole pesticides are the class of organic fungicides which are most commonly used in Germany.1 However, only little data is available concerning their TP and metabolites. During this study the fate of the triazole fungicides propiconazole and difenoconazole in soil and water using model reaction systems mimicking their pathway in the environment and the industrial water treatment is investigated. During application the substances may directly contaminate soil as well as surface waters. Both pesticides are considered persistent in soil and very stable towards aqueous photolysis.2 In this case however, the role of natural organic matter has not yet been examined. Since both pesticides also show moderate mobility in soils they may end up in ground water from which drinking water is produced. During this process, waters are treated with chlorine agents, ozone, and energy-rich UV radiation. Owing to the vigorous conditions the formation of a variety of technical TP can be expected. Additionally, for all environmental compartments the degradation of the fungicides by bacteria is a factor which needs to be taken into account. For this survey, iron-oxidising bacteria of the leptothrix variety were chosen as model organisms. Their potential for the metabolisation of the analytes is investigated. In this work degradation and transformation of the fungicides is monitored using quantitative target analysis. Major components in the reaction mixtures are identified by non-target analysis. GC-EI-MS-spectra, HR-MS-measurements, or the comparison with native standards are utilised for structural elucidation. For identification, products will be isolated and characterised by NMR. Toxicity assessment of these TP is essential to define threshold values in the environment. The model reaction system considering the interaction with organic matter will be presented and possible TP will be shown. T2 - NonTarget 2016 CY - Ascona, Switzerland DA - 29.05.2016 KW - pesticides KW - fungicides KW - non-target KW - environment PY - 2016 AN - OPUS4-36384 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mielentz, Frank A1 - Milmann, Boris A1 - Krause, Martin A1 - Wiggenhauser, Herbert T1 - Praxiseinsatz eines Ultraschall-Verfahrens zur Strukturuntersuchung von Betonbauteilen N2 - Einsatzbereiche des Meßsystems: - Ortung von Strukturelementen oder Verdichtungsmängeln in Beton - Dickenbestimmung von Bauteilen bei einseitiger Zugänglichkeit - Messung des Haftverbundes bei mehrschichtigen Bauteilen Auswerteverfahren: - Prinzip der laufzeitkorrigierten Überlagerung Vorteile: - Automatischer Meßablauf durch Array-Technik - Flexibler Einsatz durch lange Kabelverbindungen zwischen Prüfkopfarray und Meßapparatur T2 - Fachtagung Bauwerksdiagnose - Praktische Anwendungen Zerstörungsfreier Prüfungen CY - Munich, Germany DA - 21.01.1999 KW - Dickenmessung KW - Sohlplatte KW - Leerrohre PY - 1999 AN - OPUS4-36521 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stajanca, Pavol T1 - Perfluorinated polymer optical fibers for gamma radiation monitoring N2 - The sensitivity of low loss perfluorinated polymer optical fiber (PF-POF) to gamma radiation is investigated for on line radiation monitoring purposes. The radiation induced attenuation (RIA) of a commercial PF-POF based on Cytop material is measured in the visible spectral region. The fiber RIA shows strong wavelength dependence with rapid increase towards the blue side of the spectrum. The wide range of radiation sensitivities is available via careful selection of appropriate monitoring wavelength. The accessible sensitivities span from 1.99 ± 0.01 dBm⁻¹/kGy measured at 890 nm to 140.9 ± 0.6 dBm⁻¹/kGy measured at 460 nm. The fairly high radiation sensitivity as well as its wide tunability makes the fiber a promising candidate for a broad range of applications. T2 - Sixth European Workshop on Optical Fibre Sensors CY - Limerick, Ireland DA - 31.05.2016 KW - Perfluorinated polymer optical fiber KW - Cytop KW - Gamma radiation KW - Optical fiber sensors KW - Radiation dosimetry PY - 2016 DO - https://doi.org/10.1117/12.2235528 AN - OPUS4-36460 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lausch, Regine A1 - Colla, Camilla A1 - Wiggenhauser, Herbert T1 - Impakt-Echo - Analyse von Anregungsspektren und deren baupraktische Relevanz N2 - Die IE-Methode wird seit vielen Jahren zur zerstörungsfreien Prüfung von Betonbauteilen eingesetzt. Bei Anwendung dieses Verfahrens besteht oft das Problem, resultierende Frequenzspektren infolge der vielen Peaks richtig zu interpretieren. Ein wichtiges Bewertungskriterium ist dabei die Amplitudengröße eines Peaks, welche u.a. durch das Anregungsspektrum beeinflusst wird. T2 - Fachtagung Bauwerksdiagnose - Praktische Anwendungen Zerstörungsfreier Prüfungen CY - Leipzig, Germany DA - 25.10.2001 KW - zerstörungsfreie Prüfung KW - Betonbauteile KW - Frequenzspektren PY - 2001 AN - OPUS4-36524 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mittag, Kornelia T1 - Zerstörungsfreie Messungen zur Beurteilung des inneren Zustandes fester Fahrbahnen der Deutschen Bahn AG: Vergleichsmessungen an Probeaufbauten im Labor N2 - Im Rahmen eines FE-Projektes “Inspektion Fester Fahrbahnen“ der BAM und der Deutschen Bahn AG geht es um die Anwendung und weitere Entwicklung zerstörungsfreier Messverfahren zur Beurteilung des Zustandes Fester Fahrbahnen. Nach ersten Versuchsreihen direkt im Gleis wurden für verschiedene Bauarten die charakteristischen Herstellungsbedingungen simuliert und systematisch untersucht. Die kombinierte Anwendung der drei Messverfahren Ultraschall-Array-, Impakt-Echo- und Impuls-Radar-Verfahren wird hier an dem Beispiel “Betonschwelle in Betoneinbettung” dargestellt. T2 - Fachtagung Bauwerksdiagnose - Praktische Anwendungen Zerstörungsfreier Prüfungen CY - Leipzig, Germany DA - 25.10.2001 KW - Ultraschall-Array-Messverfahren KW - Impakt-Echo-Messverfahren KW - Impuls-Radar-Messverfahren PY - 2001 AN - OPUS4-36526 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert A1 - Wilsch, Gerd A1 - Schaurich, Dieter A1 - Wöstmann, Jens T1 - Betonanalyse mit Laserinduzierter Breakdown Spektroskopie (LIBS) N2 - Der große Vorteil der vorgestellten Methode liegt in der quasi on-line Bereitstellung der Ergebnisse und in der Möglichkeit des Einsatzes direkt am Bauwerk. Die vorliegenden Meßergebnisse zeigen den erfolgreichen Einsatz von LIBS zur Messung der Betonzusammensetzung. Eine Unterscheidung von Zementen gelingt durch die Einordnung der Meßwerte ins Dreistoffdiagramm. Neue kleine Laser, handliche Echellespektrographen und neuartige Lichtleiter lassen sich zu mobilen LIBS-Apparaturen kombinieren, die eine Messung undAuswertung vor Ort ermöglicht. T2 - Fachtagung Bauwerksdiagnose - Praktische Anwendungen Zerstörungsfreier Prüfungen CY - Munich, Germany DA - 21.01.1999 KW - Betonzusammensetzung KW - Dreistoffdiagramm KW - Echellespektrographen PY - 1999 AN - OPUS4-36538 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gottlieb, Cassian T1 - Cluster algorithm for the evaluation of heterogeneous materials by LIBS N2 - The laser-induced breakdown spectroscopy (LIBS) is a fast method to provide multi-elemental analysis of any sample. At the Federal Institute for Materials Research and Testing (BAM) the LIBS technique is applied on building materials to measure ingress profiles of harmful species like chloride and alkalis. The ingress depth and the quantitative amount is important for the evaluation of the potential for damage processes like the alkali-silica reaction or chloride-induced corrosion. Concrete as an example is a highly heterogeneous material with 1/7 cement (major component CaO) and 6/7 aggregates (SiO2) with different grain sizes. Due to a scanning procedure a two dimensional element distribution of a concrete surface can be measured. In order to have an automated Separation method to evaluate heterogeneous materials, different cluster algorithm have been tested. Best results have been achieved with the Expectation-Maximization-Algorithm (EM-Algorithm). T2 - Chemometrics in analytical chemistry CY - Barcelona, Spain DA - 06.06.2016 KW - LIBS KW - Concrete KW - Multivariate analysis PY - 2016 AN - OPUS4-36471 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Madkour, Sherif T1 - Evidence of a Three-Layred Structure in Ultrathin PVME and PVME-PS Blend Films by Nanosized Relaxation Spectroscopy N2 - In the course of miniaturizing modern technology down to the molecular scale, much remain unknown about the materials behavior and the deviations from the bulk that might arises from confinement effects. Here, a combination of nano-sized relaxation spectroscopies (Broadband dielectric spectroscopy (BDS) and Specific heat spectroscopy (SHS); employing AC nanochip calorimetry) were utilized to investigate the glassy dynamics of ultra-thin films of Poly (vinyl methyl ether) (PVME) and of blends PVME / Polystyrene (PS) 50:50 wt-%,, which are miscible in bulk (thicknesses: ca. 8 nm – 160 nm, film thickness was controlled by ellipsometry, film topography by AFM). Both methods are sensitive to different probes; where SHS senses entropy fluctuations while BDS measures dipole fluctuations. For BDS measurements, a recently developed nano-structured electrode sample arrangement is employed, where ultra-thin films are spin-coated on an ultra-flat highly conductive silicon wafer, sandwiched between a wafer with nanostructured SiO2 nano-spacers with heights between 35 nm and 70 nm. For PVME films, two thickness independent processes were observed and interpreted to be the α-processes of a bulk-like layer and a process due to an absorbed layer to the substrate. This adsorbed layer further undergoes a confinement effect that results in the localization of the segmental dynamics, which results in an Arrhenius-like temperature dependence. A detailed analysis of the dielectric strengths of both processes reveals that the thickness of the adsorbed layer decreases with increasing temperature, while that of the bulk-like layer increases. For the blend system, by measuring the dynamic Tg in dependence of the film thickness, SHS showed that the Tg of the whole film was strongly influenced by a nanometer-thick surface layer at the polymer/air interface due to a self-assembling process. The dynamic Tg obtained from the SHS measurements decreased with decreasing film thickness. On the other hand, BDS measurements showed a completely different behavior. At high temperatures, the temperature dependence of the relaxation times of the films follows that of bulk-like PS/PVME; obeying the VFT-law. With decreasing temperature, the temperature dependence deviates from the VFT to an Arrhenius law; where the apparent activation energy decreases with decreasing film thickness. This is the first example where confinement induced changes were observed by BDS for ultra-thin films. All results were analyzed in detail in a comprehensive discussion. T2 - 14. Lähnwitzseminar on Calorimetry CY - Rostock-Warnemünde, Germany DA - 05.05.2016 KW - Ultra-Thin films PY - 2016 AN - OPUS4-36477 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sentker, K. A1 - Yildirim, Arda T1 - Columnar axial orientation of discotic liquid crystals in nanoporous solids N2 - Successful implementation of an optical polarimetry measurement setup. Due to wall anchoring interactions HAT6 embedded in an untreated alumina membrane exhibits a radial orientation for pore sizes in between 30 nm and 80 nm. Embedded in large membranes, pore size of 180 nm, HAT6 forms the favored hexagonal columnar phase along the pore axis. T2 - 80. Jahrestagung der DPG und DPG-Frühjahrstagung CY - Regensburg, Germany DA - 06.03.2016 KW - Discotic Liquid Crystals KW - Nanoconfinement KW - Orientation PY - 2016 AN - OPUS4-36479 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Walter, Astrid T1 - EU-Projekt HOMER, home made explosives (HMEs) and recipes characterisation N2 - Das EU-Projekt HOMER befasst sich mit den sogenannten Home Made Explosives (HMEs) und frei verfügbaren Rezepten für deren Herstellung. Diese Selbstlaborate spielen in der heutigen Zeit vor allem im Zusammenhang mit terroristischen Aktivitäten eine bedeutende Rolle. Informationen zu HMEs und ihrer Herstellung werden einfacher denn je über das Internet verbreitet. Hier knüpft das im 7. EU‑Forschungsrahmenprogramm finanzierte Projekt an und bezweckt, die im Internet verfügbaren Quellen auszuwerten und so die Informationslage für Sicherheitskräfte und Ermittlungsbehörden zu verbessern. Im Rahmen des Projektes wird eine automatisierte Suche von Rezepten im Internet entwickelt. Die gefundenen sowie die im Projekt generierten Informationen über HMEs sollen im Endergebnis in Form einer Software (Knowledge Management Platform) informationstechnisch nutzbar gemacht werden. Diese Datenbank soll auch für mobile Geräte zur Verfügung stehen. Der Schwerpunkt der Projektbeteiligung des Fachbereichs 2.3 Explosivstoffe der BAM liegt in der Bewertung der Rezepturen und der auf ihrer Grundlage hergestellten Laborate. Es wurden HMEs entsprechend der vorgefundenen Rezepte und unter Beachtung aller notwendigen Sicherheitsvorkehrungen hergestellt und anschließend sicherheitstechnisch geprüft und bewertet. Dabei wurden sowohl Handhabungsparameter wie die Empfindlichkeiten gegen Schlag, Reibung und thermische Einflüsse ermittelt, als auch die Leistungsparameter wie Detonationsgeschwindigkeit und Luftstoßdruckwirkung gemessen. Die gewonnen Erkenntnisse fließen in die genannte Datenbank ein und sollen beispielsweise Einsatzkräften vor Ort helfen, angemessene Schutzabstände zu ermitteln. Auch das Personal in Laboren der Kriminalämter profitiert von der zusammengetragenen Information über HMEs bei der Analyse von unbekannten Explosivstoffspuren. T2 - 14. BAM-PTB-Kolloquium zur chemischen und physikalischen Sicherheitstechnik CY - Berlin, Germany DA - 14.06.2016 KW - Homemade explosives KW - Explosivstoffe KW - TATP KW - Ammoniumnitrat PY - 2016 AN - OPUS4-36594 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Casperson, Ralf T1 - Manufacturing of reference defects for NDT using low-energy EDM N2 - For non-destructive testing (NDT) appropriate reference blocks are required in order to verify and calibrate a testing procedure. At BAM a special electric discharge machining (EDM) system has been developed which is able to manufacture artificial defects having a width down to 30 μm. Especially in the case of austenitic materials conventional EDM leads to a transformation of austenite to martensite. The martensite transformation causes a higher sensitivity of electromagnetic NDT methods (e. g. eddy current testing) at the artificial defects compared to natural defects of same size. The EDM system developed at BAM uses very low energy to avoid this material transformation. A side effect of the low-energy EDM is a lower surface roughness compared to conventional EDM. The artificial defects manufactured at BAM are measured optically and delivered with a certificate. A comparison of artificial defects shows the influence of material transformation on NDT and how differently the quality of the artificial defects can be. T2 - 19th World Conference on Non-Destructive Testing CY - Munich, Germany DA - 13.06.2016 KW - Reference defect KW - EDM KW - Electric discharge machining KW - Artificial defect PY - 2016 AN - OPUS4-36600 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weise, Matthias T1 - Characterization of Surface Topometry and Determination of Layer Thickness by Scanning White Light Interference Microscopy N2 - 3D coherence scanning interferometry (CSI) is an optical, non-contact and rapide measurement technique using a defined bandwidth of white light at normal incidence. Based on this operational principle, white light interference microscopy (WLIM) provides three-dimensional surface topometry data up to a resolution of 0.4 μm lateral and 0.1 nm vertical. Three operating modi, i.e. surface, films and advanced films, enable measurements of step heights, roughness, wear volume, cone angle, surface pattern and layer thickness of transparent coatings. The determination of layer thickness by WLIM requires the knowledge of optical constants, i.e.the refractive index n and the extinction coefficient k. For technical surfaces, data base values - if available at all - have to be determined or validated by spectroscopic ellipsometry (SE). From this oblique incidence technique both optical constants and layer thickness can be derived based on a model for at least semi-transparent coatings. For different layer thicknesses, a comparison is made between WLIM and SE. Measurement uncertainty is discussed for both topometric features and layer thickness for different use cases. Traceability to SI system is ensured by certified standards (PTB/NIST) within a DAkkS DIN EN ISO/IEC 17025:2018 accredited lab. T2 - 17th International Conference on Plasma Surface Engineering (PSE) CY - Erfurt, Germany DA - 07.09.2020 KW - Rroughness and step heights KW - Lateral surface pattern KW - Layer thickness of transparent coatings KW - Scanning white light interferometry KW - Spectroscopic ellipsometry PY - 2020 AN - OPUS4-51301 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ruwe, L. T1 - Comparative study on the performance of the standardized test method for detonation flame arrestors N2 - Detonation flame arresters are widely used as protection systems in industrial applications to avoid damage from incidental gas explosions, by preventing the propagation of the ongoing explosion from one section of a plant to another. Numerous processes in the chemical and petrochemical industry are taking place under non-atmospheric conditions (e.g. increased pressure and/or temperature) in order to optimize the production capabilities. The suitability of detonation flame arresters is verified and examined according to the DIN EN ISO 16852 standard, which is only based on findings from experiments under atmospheric conditions. In some instances, differing results are obtained by the different institutes using the current standardized test procedure, especially for instable detonations as well as for detonations at elevated pressures before ignition. The primary objective of this study is to develop an improved test method for detonation flame arresters, which offers a higher reproducibility and moreover, an applicability under non-atmospheric conditions. For this aim, the project partners (PTB, BAM, Braunschweiger Flammenfilter GmbH and IBExU GmbH) jointly conduct an interlaboratory comparison on the performance of in-line flame arresters for stable and instable detonations. The experiments are performed according to the test method regulated in the DIN EN ISO 16852 standard for different pressures before ignition and for different explosion groups (IIA, IIB, IIC). The interlaboratory comparison points out potential ambiguities of the standardized test procedure that might lead to the differing results at the different institutes. Based on these experimental findings, an improved test method for detonation flame arresters will be developed, which will ensure a greater safety at process plants while handling combustible liquids and gases. T2 - 10. ProcessNet-Jahrestagung und 34. DECHEMA-Jahrestagung der Biotechnologen 2020 CY - Online meeting DA - 21.09.2020 KW - Pipes KW - Detonation KW - Flame arrestor PY - 2020 AN - OPUS4-51558 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Feldkamp, Martin T1 - Heat Flux from Wood Filled Impact Limiter under Fire Conditions N2 - Packages for the transport of high-level radioactive material must withstand severe hypothetical accidents. Regulatory test conditions shall cover these severe accident conditions and consist of mechanical tests and a following thermal test. To withstand the mechanical tests heavy weight packages are often designed with impact limiters consisting of wood encapsulated in steel sheets. The thermal test is defined precisely in the IAEA-regulations as a 30 minute fully engulfing 800 °C fire. After the fire phase a pre-damaged impact limiter might continue burning or smouldering and influence the cask thermal behaviour with its energy release. The energy transferred from the impact limiter to the cask is of importance for the safety of transport packages. A full-scale fire test with an impact limiter of 2.3 m in diameter and filled with spruce wood was designed and performed. The impact limiter continued burning for 3 days. Energy transfer and temperature measurements were performed. T2 - 9th International Scientific Conference - wood & fire safety 2020 CY - Online meeting DA - 02.11.2020 KW - Fre KW - Smouldering KW - Wood PY - 2020 AN - OPUS4-51517 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Faßbender, Sebastian T1 - On-line Species-specific Isotopic Analysis of Sulfur by Hyphenation of Capillary Electrophoresis with Multicollector-ICP-MS N2 - In many scientific fields, isotopic analysis can offer valuable information. Up to date, typically bulk analysis is aimed at measuring the isotopic composition of the entire elemental content of the sample. However, the analyte element is usually present under the form of different species. Thus, separating species of interest from one another and from matrix components prior to isotope ratio measurements can provide species-specific isotopic information, which could be used for tracing the origin of environmental pollutants and elucidation of (environmental) speciation. Using on-line hyphenations of separation techniques with multicollector-ICP-MS (MC-ICP-MS) can save time and effort and enables the analysis of different species during a single measurement. Whereas some works hyphenating GC and IC with MC-ICP-MS have already been reported, LC and CE hyphenations are still inadequately represented based on the capabilities of these separation techniques. In this work, we developed an on-line hyphenation of CE with multicollector-ICP-MS (CE/MC-ICP-MS) for isotopic analysis of sulfur species using a multiple-injection approach for instrumental mass bias correction by standard-sample bracketing. With this method, the isotopic composition of sulfur in sulfate originating from river water could be analyzed without sample preparation. The results were compared to data from off-line analysis of the same samples for validation. The repeatability of the results of the on-line measurements was promising regarding the differentiation of the river systems by the isotopic signature of river water sulfate. The great potential of this method is based on the versatility of the applied separation technique, not only in the environmental field but also for, e.g., biomolecules because sulfur is the only covalently bound constituent of proteins that can be analyzed by MC-ICP-MS. T2 - SciX 2020 CY - Online meeting DA - 12.10.2020 KW - Capillary electrophoresis KW - Hyphenated techniques KW - Isotopic analysis KW - Speciation analysis PY - 2020 AN - OPUS4-51402 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dittmann, Daniel T1 - Aktivkohlecharakterisierung von GAK-Filtern bei unterschiedlichen Laufzeiten N2 - Eine umfangreich ausgestaltete Trinkwasseraufbereitung als Multibarrieren-System ist notwendig, wenn das Rohwasser direkt aus Fließgewässern entnommen wird (z. B. für das Mülheimer Verfahren). Eine der Barrieren wird, als gezielte Behandlungs- oder Sicherheitsstufe, oft als Filter mit granulierter Aktivkohle (GAK-Filter) realisiert. Ihre Standzeit kann bei geringer Wasserbelastung (DOC < 2 mg/L), z. B. bei der Landeswasserversorgung Langenau, bis zu 5 Jahre betragen. Bei Rohwasser mit höherem Organikgehalt (DOC > 7 mg/L), wie bei der Nordwasser in Rostock, wird hingegen mindestens alle drei Jahre die GAK in den Filterkolonnen ausgetauscht. Die Rest-Adsorptionskapazität der GAK kann durch verschiedene Verfahren abgeschätzt werden, ist aber nach wie vor Gegenstand aktueller Forschung. Die weitergehende Charakterisierung der beladenen GAK kann hierbei helfen. Auf dem Poster sollen erste Ergebnisse zu den in Langenau und Rostock eingesetzten Aktivkohlen präsentiert werden. Hierzu wurden die frischen und nach unterschiedlichen Laufzeiten beladenen GAK untersucht. Die Zusammensetzung der Anorganik und der adsorbierten Organik, welche mittels Zersetzungs¬gasanalyse charakterisiert wurde, zeigt deutliche Unterschiede. Bspw. nimmt der Calcium-Gehalt der GAK in Langenau kontinuierlich zu, wohingegen dieser in den Proben aus Rostock mit zunehmender Laufzeit zurückgeht. Umgekehrt verhält es sich mit der Organik: Die GAK aus Rostock zeigen Hinweise auf biologische Besiedelung, während diese in Langenau trotz längerer Filterlaufzeit auszubleiben scheint. T2 - 4. Mülheimer Wasseranalytisches Seminar (MWAS2020) CY - Mülheim an der Ruhr, Germany DA - 16.09.2020 KW - Thermogravimetrie KW - Trinkwasser KW - Wasseraufbereitung KW - Aktivkohle PY - 2020 AN - OPUS4-51433 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Natural frequencies and modes of poles, beams, floors, road and rail bridges N2 - In the last three decades, the vibrations of many floors and bridges have been measured. The contribution shows some evaluation methods, experimental results and some modelling and theoretical results. Simple evaluation methods have been developed for single and coupled floors. Two coupled beams have been measured in good agreement with the theory. A more complex coupling model has been found for a large wooden floor in a castle consisting of six floor bays which correlates well with the measurements. Damaged and intact poles have been tested by their natural frequencies and damping values, and a fair correlation between the degree of damage and the shift of the frequency. Road bridges have been analysed in detail and some examples are presented. Railway bridges and trains are studied for resonant excitation. The risk of resonance can be estimated in frequency domain by using axle-sequence spectra of the train and the natural frequencies of the bridge. A measurement example shows the amplification, but even stronger the cancellation of the subsequent axle responses. Several high-speed trains and freight trains have been analysed for their potential resonance amplification. T2 - International Conference on Noise and Vibration Engineering (ISMA/USD 2020) CY - Online meeting DA - 07.09.2020 KW - Modalanalyse KW - Bauwerke KW - Bauteile KW - Brücken KW - Achsfolgespektren PY - 2020 AN - OPUS4-51213 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riedel, Soraya T1 - Immunomagnetic ochratoxin A assay with smartphone-based amperometric detection N2 - Toxic secondary metabolites produced by fungi (aka mycotoxins) are often identified as contaminants in food and pose a severe health risk. Ochratoxin A (OTA) is one of the most abundant mycotoxins found in grains such as wheat, rye or oats. Thus, the fast and cost-effective detection of OTA is of great importance, to ensure that the toxin concentration is below the legal limits. Currently, mycotoxin detection in mill operations is typically performed by means of the antibody-based ELISA (Enzyme-linked Immunosorbent Assay) method, which requires extensive laboratory equipment and specialized personnel. The aim of this project is to establish a more user-friendly detection method. Thus, we developed a magnetic bead-based assay enabling the quantification of OTA with a miniaturized potentiostat connected to a smartphone. T2 - SALSA Make and Measure 2020 CY - Online meeting DA - 15.10.2020 KW - ochratoxin A KW - smartphone KW - amperometry KW - cyclic voltammetry KW - magnetic beads KW - screen-printed electrodes PY - 2020 N1 - Geburtsname von Riedel, Soraya: Höfs, S. - Birth name of Riedel, Soraya: Höfs, S. AN - OPUS4-51445 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinhäuser, Lorin A1 - Piechotta, Christian T1 - A project to deliver reliable measurements of estrogens for better monitoring surveys and risk assessments N2 - EDC WFD project to deliver reliable measurements of estrogens for better monitoring surveys and risk assessments. Collaboration between National Metrology Institutes and advanced research institutes from 6 European countries A Balance of expertise: development and certification of RM, proficiency tests / interlaboratory comparison design, method development and validation, standardisation A 3 years project: September 2019- August 2022 Strong engagement with stakeholders (Advisory Group) T2 - SETAC 2020 CY - Online meeting DA - 03.05.2020 KW - EDC KW - Endocrine disrupting chemicals PY - 2020 AN - OPUS4-51739 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckmann, Jörg T1 - One-Line Monitoring of the Curing Process of FRP N2 - The knowledge of the cure situation during the production process of thermosetting material is of enormous importance. • Mid- and near- infrared (IR) spectroscopy in attenuated total reflectance (ATR) geometry are promising techniques for curing studies. • An IR/THz sensor system was developed to investigate its suitability for future online monitoring of curing processes in the production line. T2 - BESSY@HZB User Meeting 2020 CY - Online meeting DA - 10.12.2020 KW - Fiber Reinforced Polymers KW - Curing Monitoring KW - Attenuated Total Reflectance PY - 2020 AN - OPUS4-51804 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - von Törne, Wipert T1 - Structural Investigations of Transformation Products of the Anticoagulant Drug and Rodenticide Warfarin N2 - Herein, we present liquid and gas chromatographic methods coupled to (high-resolution) mass spectrometry for the analysis of warfarin’s transformation products. Methodologies such as UV-irradiation, ozonation, and chlorination were utilised to simulate technical water treatment. Resulting compounds were elucidated and examined by numerous analytical methods. Moreover, the oxidative phase I metabolism was mimicked by an electrochemical flow cell to synthesise and confirm major metabolites. The further aim is the toxicological assessment of all substances formed, as well as, the quantification of warfarin and its TPs under environmentally relevant conditions employing the introduced methods. T2 - SETAC 2020 CY - Online meeting DA - 03.05.2020 KW - Warfarin PY - 2020 AN - OPUS4-51738 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pignatelli, Giuseppe T1 - Optical Sensor for Monitoring Quality of 3D Metal Printing N2 - Additive Manufacturing (AM) becomes widespread in many technological fields including the precise machining of steel. To assure quality of final products, thorough monitoring of online process is required. We test several monitoring techniques during the AM printing to quickly detect and possibly correct flaws while building a workpiece. Here we show how optical emission spectroscopy can be used to recognize defects that are artificially introduced on a steel printing substrate. T2 - Scix 2020 CY - Online meeting DA - 12.10.2020 KW - Additive manufacturing KW - Spectroscopy KW - Analytical chemistry PY - 2020 AN - OPUS4-51858 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Romero-Navarrete, José A. T1 - An energy frame of reference to assess vehicle´s physical externalities (IMECE 2020-23745) N2 - As a result of the vehicle – infrastructure interaction, both systems deteriorate. The development of performance measures about such effects, is critical to find ways to mitigate these systems deterioration. We propose an energy approach to such an assessment: The transient energy stored in the pavement. The transient strain energy stored in the vehicle suspension. T2 - IMECE 2020 CY - Online meeting DA - 16.11.2020 KW - Energy KW - Frame KW - Assess KW - Vehicles PY - 2020 AN - OPUS4-51642 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckmann, Jörg T1 - Novel Technique for On-Line Monitoring of the Curing Process of Fiber Reinforced Polymer Composites N2 - A specially designed experimental set up has been integrated into a commercially available FT IR Spectrometer for ATR experiments on Epoxy Systems. Representative data of far infrared spectra measured during the curing process at different temperatures of an epoxy system will be presented in dependency of the curing situation. The experiments and the selected set up are discussed to demonstrate its potential for future monitoring and ageing control applications during a manufacturing process of polymer composites. T2 - 45. International Confercene on infrared, milimeter and terahertz waves CY - Online meeting DA - 08.11.2020 KW - Far-infrared spectroscopy KW - Curing Monitoring PY - 2020 UR - https://live-irmmwthz.pantheonsite.io/technical-program AN - OPUS4-51649 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schade, U. T1 - Etalon Effects in THz Film Measurements N2 - Etalon effects in THz transmittance spectra, either taken in time-domain or frequency-domain, often hamper or even hinder the interpretation of film properties. In this paper we discuss the transferability and applicability of spectroscopic methods usually employed in the near and mid infrared spectral range and exemplarily present the application field. T2 - 45. International Confercene on infrared, milimeter and terahertz waves CY - Online meeting DA - 08.11.2020 KW - Far-infrared spectroscopy KW - Etalon Effects PY - 2020 UR - https://live-irmmwthz.pantheonsite.io/technical-program AN - OPUS4-51652 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bayerlein, Bernd T1 - Focused ion beam techniques beyond the ordinary - Methodological developments within ADVENT N2 - This poster presents the focused ion beam preparation methodologies developed within the framework of the EU funded EURAMET project ADVENT (Advanced Energy-Saving Technology). It summarises the key breakthroughs achieved for various in situ investigation techniques, e.g. in situ experiments at the Synchrotron facility BESSY II (IR-SNOM and XRS), TEM and SMM instrumentation. The created experimental devices from diverse thin-film semiconductor materials paved the way to dynamic structural studies bearing the potential to determine nanoscale correlations between strain and electric fields and, moreover, for the fundamental development of new in situ capabilities. N2 - Dieses Poster zeigt die FIB Präparationstechniquen, die im Rahmen des EU-finanzierten EURAMET-Projekts ADVENT (Advanced Energy Saving Technology) entwickelt wurden. Es fasst die wichtigsten Errungenschaften zusammen, die für verschiedene in situ Untersuchungstechniken erzielt wurden, z.B. situ-Experimente in dem Synchrotronring BESSY II (IR-SNOM und XRS), in situ TEM Experimente und für die SMM Technik. Die experimentellen Probenstrukturen, die aus verschiedenen Dünnschicht-Halbleitermaterialien erzeugt wurden, ebneten den Weg für dynamische Strukturstudien, die das Potenzial haben, nanoskalige Korrelationen zwischen Dehnung und elektrischen Feldern zu bestimmen und darüber hinaus neue in situ Messmethoden zu entwickeln. T2 - Final Meeting CY - Online Meeting DA - 30.06.2020 KW - FIB KW - Sample preparation KW - In situ KW - TEM KW - AFM PY - 2020 AN - OPUS4-51606 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Amano, K.O.A. A1 - Hahn, S.-K. A1 - Tschirschwitz, Rico A1 - Rappsilber, Tim A1 - Krause, U. T1 - Experimental Investigation on Explosion Pressure Characteristics of Lithium-based (NMC) Pouch Batteries during Thermal Runaway N2 - Lithium ion batteries (LIBs) are prone to spontaneous and subsequent fire or explosion resulting from thermal runaway. The vented gases are not only toxic and flammable, their emission can also raise the surrounding pressure rapidly. In this study, characteristic variations of explosion pressure rise, rate of explosion pressure rise and 𝐾(sT)-value have been evaluated. The characteristic 𝐾(𝑠𝑇)-values were determined to evaluate the explosive behavior of LIBs during thermal runaway. The estimated values were compared to that of other explosive substances. T2 - Batterieforum Deutschland 2021 CY - Online meeting DA - 20.01.2021 KW - Pressure KW - Lithium KW - Thermal Runaway KW - Battery KW - Pouch PY - 2021 AN - OPUS4-52033 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Fabian T1 - A fast and simple PFAS extraction method for soil samples utilizing HR-CS-GFMAS N2 - Here, we describe a fast and simple extraction method for the determination of per- and polyfluorinated alkyl substances (PFASs) utilizing extractable organic fluorine (EOF) sum parameter analysis and high resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS) in soil samples. After extraction and separation of inorganic and organic fluorinated compounds, organically bound fluorinated compounds were indirectly determined via the molecular absorption of gallium mono-fluoride at 211.248 nm. The implementation of the decisions of the “Stockholm Convention on persistent organic pollutants” as well as the “Protocol on Persistent Organic Pollutants of the Convention on Long-Range Transboundary Air Pollution” of the UNECE include the reduction respectively the elimination of PFASs in the environment. Currently, regulations aim to target single compounds (mostly C8-PFAS). But the PFAS group includes over 4700 substances, which are potentially persistent and toxic, thus target analytical approaches are not suitable for a holistic approach investigating the PFAS pollutant situation. Furthermore, forbidden PFASs are substituted by short-chain PFASs, thus the number of unknow substances is steadily increasing. For this reason, sum parameter approaches are more suitable to investigate and assess the pollution situation as well as derive exposure limits. Our developed analytical method was successfully applied to determine PFASs in soil samples from a polluted site. In view of steadily increasing numbers of PFAS substances, our method will make an important contribution in assessing the pollution situation as well as support policy makers in deriving exposure limits for PFAS in the future. T2 - SALSA Make and Measure ... and Machines CY - Online meeting DA - 16.09.2021 KW - PFAS KW - HR-CS-GFMAS KW - IC KW - EOF KW - Soil PY - 2021 AN - OPUS4-53302 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Metrology for the recycling of Technology Critical Elements to support Europe´s circular economy agenda N2 - Technology critical elements (TCE) are key materials for high-tech products such as smartphones, notebooks and monitors. Their demand is expected to increase exponentially due to the shift towards greener economy through the deployment of renewable energy and electro mobility solutions (European Green Deal). This and the lack of TCE production within the EU, puts the market under pressure and leads to increasing prices. The need to secure TCE supply has become even more pressing under the current health crisis and it is a major objective of the Covid-19 Recovery Plan aimed at reinforcing Europe’s resilience and autonomy. A sustainable solution is effective recycling and finally a circular economy. However, the analysis of waste streams is difficult and requires suitable SI traceable analytical solutions to allow for comparability of measurement results throughout the recycling process. The required reference materials (RMs) certified for TCE in the corresponding waste or secondary raw materials and specific documentary standards for TCE to comply with ISO/IEC 17025 requirements, however, are lacking. Furthermore, waste from the so-called “urban mine” is extremely heterogeneous making the estimation of its TCE content difficult. Currently, there is a lack of knowledge at the European level about the TCE stocks and flows in the urban mine. Given the high volume of waste generated and received, fast reliable analytical methods as well as sampling and sample preparation strategies are needed to determine the economic value of the waste and of the final product and to develop and improve recycling procedures. Within this project we focus on TCEs (Co, Ga, Ge, In, Ta, Nd, Pr, Dy, Gd, La, Au, Pt, Pd, Rh), which have been selected from the list of critical elements for Europe established by the EU in 2020. The overall objective of the project is to provide the reliable and SI traceable determination of TCE in urban waste material at µg/g levels to increase the efficiency and accuracy of TCE recycling. This will be realized by developing validated SI-traceable reference methods, developing traceable and validated RMs for the TCEs, validating the use of the routine methods and RMs for real world applications and facilitating the take up of the technology and measurement infrastructure developed in the project by the measurement supply chain, standards developing organizations and end users. This presentation will give an overview of the consortium, the project structure and the planned research. First activities will be presented as well. T2 - International Conference on Raw Materials and Circular Economy CY - Athens, Greece DA - 05.09.2021 KW - TCE KW - Reference material KW - Metrology PY - 2021 AN - OPUS4-53282 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilsch, Gerd A1 - Völker, Tobias T1 - Laser-based building material sorting for the processing of construction and demolition waste for the circular economy N2 - A joint project of partners from industry and research institutions for the research and construction of an analysis system for an automated, sensor-supported sorting of construction and demolition waste will be presented. This is intended to supplement or replace the previously practiced manual sorting, which harbors many risks and dangers for the staff and only enables obvious, visually detectable differences for separation. The method of laser-induced breakdown spectroscopy is to be used in combination with hyperspectral sensors. Due to the jointly processed information (data fusion), this should lead to a significant improvement in the separation of types. In addition to the sorting of different materials (concrete, main masonry building materials, organic components, glass, etc.), impurities such as SO3-containing building materials (gypsum, aerated concrete, etc.) could also be detected and separated. The subsequent recycling and sales opportunities are examined, such as the use of recycled aggregates in concrete, the recycling of building materials containing sulphate as a gypsum substitute for the cement industry or the agglomeration of synthetic lightweight aggregates for lightweight concrete or as a substrate for green roofs. At the same time, it is investigated whether soluble components (sulfates, heavy metals, etc.) can be detected by LIBS without a wet chemical analysis and what impact the recycling materials have on the environment. The entire value chain is examined using the example of the Berlin location in order to minimize economic / technological barriers and obstacles on a cluster level and to sustainably increase the recovery and recycling rates. T2 - Materials Week 2021 CY - Online meeting DA - 07.09.2021 KW - Laser induced breakdown spectroscopy KW - Building waste KW - Circular economy KW - Material sorting PY - 2021 AN - OPUS4-53286 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gantois, F. T1 - ALCOREF "Certified forensic alcohol reference materials" N2 - The poster presents the main achievements of the capacity building project ALCOREF “Forensic alcohol reference materials”. The project was part of the European Metrology Programme for Innovation and Research (EMPIR). Altogether 43 certified ethanol in water reference materials (CRMs) in the mass fraction range of 0.1 to 7 mg/g were developed by project partners. These CRMS are suitable for the calibration and verification of evidential breath alcohol analysers according to the requirements of the International Organisation of Legal Metrology (OIML). Furthermore, 10 new or improved Calibration and Measurement Capability (CMC) claims for purity assessment of ethanol and ethanol quantification were prepared. Newly established measurement capabilities and the new CRMs were successfully tested in three intercomparisons conducted as official intercomparisons of EURAMET Technical Committee for Metrology in Chemistry. T2 - 20th International Metrology Congress CIM CY - Lyon, France DA - 07.09.2021 KW - Certified reference material KW - EMPIR project KW - Evidential breath alcohol measurement PY - 2021 AN - OPUS4-53288 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lee, Hee-Jin A1 - Rühl, Isabel T1 - Phosphorus sum parameter analysis using HR-CS-GFMAS N2 - Organophosphate (OP) esters (OPEs) are widely used as flame retardants (FRs) and can for that purpose be found in textiles, furnitures, electronics and more. They can also be used as plasticizers or lubricants. OPEs have been found in air, water and sediment as environmental pollutants and are associated with potential health risks like cancer. In this study, a method for the phosphorus sum parameter analysis using HR-CS-GFMAS was optimized for environmental (water) samples. For this purpose, three FR substances (TPP, VPA, TDCPP) were used. T2 - SALSA Make and Measure ... and Machines CY - Online meeting DA - 16.09.2021 KW - HR-CS-GFMAS KW - Phosphorus KW - Organophosphate esters KW - Flame retardants PY - 2021 AN - OPUS4-53303 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ecke, Alexander T1 - An Electrochemical Immunosensor for Pharmaceutical Contaminants in Water N2 - Contamination of drinking water with pharmaceuticals is an emerging problem and a potential health threat. Immunochemical methods based on the binding of the analyte to specific antibodies enable fast & cost-effective on-site analyses. Magnetic bead-based immunoassays allow for implementation into an immunosensor for online testing. Particles are prepared by either coupling the analyte molecule (diclofenac) or the respective antibody (amoxicillin) to the surface. For miniaturization, detection is performed electrochemically (chronoamperometry) on a microfluidic chip. The developed immunosensor will enable detection of pharmaceuticals directly in water supply pipes. T2 - SALSA Make & Measure CY - Online meeting DA - 16.09.2021 KW - Immunosensor KW - Magnetic Beads KW - Amoxicillin KW - Diclofenac KW - Microfluidics KW - Chronoamperometry PY - 2021 AN - OPUS4-53307 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisentraut, Paul T1 - Microplastic analysis using TED-GC/MS: H/D-Exchange of decomposition products of D-marked polystyrene as an internal standard N2 - Deuterated polystyrene (D-PS) improves microplastic detection with TED-GC / MS, among other things through higher reproducibility. It is inexpensive (0.1 ct / analysis) and can be dosed quickly and reproducibly thanks to its good solubility (e.g. in toluene). However, certain matrices lead to an exchange of the deuterium with hydrogen. The poster shows the measuring principle, in which matrices H/D-exchange takes place, the results of kinetic studies and ways of preventing or circumventing the H/D-exchange. T2 - SALSA MAKE AND MEASURE 2021 CY - Online meeting DA - 16.09.2021 KW - Microplastic KW - H/D-Exchange KW - Internal Standard KW - TED-GC/MS KW - Thermoanalytic PY - 2021 AN - OPUS4-53681 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Roesch, Philipp T1 - Detailed Investigation of Perfluoroalkyl Surfactant Contaminated Soil Samples by Combustion Ion Chromatography - Development of EOF and AOF as Reference Values in Environmental Analysis N2 - Per- and polyfluoralkyl surfactants (PFASs) are industrially produced surface chemicals used in daily applications that have gained public and political attention due their unnaturally high appearance in drinking water, nourishments and soils. Their chemical structures exhibit both lipophilic and hydrophilic properties, leading to a highly inert and persistent character. Various PFASs have shown to be bioaccumulative in plants and animals, and some have been characterized as highly toxic when ingested. When exposed to the environment, PFASs slowly get mobilized by natural water resources, leading to contamination of large areas of soil and natural water sources. While PFASs contamination of drinking water has been investigated intensively, perfluoralkyl contamination of soils has been rarely examined as of yet. At the same time, an increasing amount of PFASs contamination sites are being discovered worldwide, calling for a sophisticated strategy towards analytical characterization. Since the number of known PFASs already exceeds 4700, the established sum parameters like extractable organic fluorine (EOF) and adsorbable organic fluorine (AOF) are key elements to fully survey the impact of exposure. Simultaneously, innovative soil remediation strategies are required to contain environmental destruction and to minimize further spreading of contaminants. Addressing these challenges requires suitable analytical devices that are capable of mobilizing PFASs in the solid as well as in the liquid phase. The use of combustion ion chromatography (CIC) enables analysis of both immobile and volatile PFASs and allows the detection of both total fluorine (TF) and EOF or AOF of a given soil or aqueous sample. Based on preliminary results, the clean-up of a PFAS contaminated solid matrix is monitored via EOF detection over time. Additionally, we demonstrate the pH dependency of hydrogen fluoride absorption on active carbon (AC) and found a simple organic additive to be an effective fluoride scavenger. The presented findings can be contributive with regard to future AOF/EOF sum parameter development and application. T2 - DECHEMA Symposium Strategien zur Boden- und Grundwassersanierung 2020 CY - Online meeting DA - 23.11.2020 KW - PFAS KW - SPE extraction KW - Combustion ion chromatography KW - Organo fluorine analysis KW - Soil extraction KW - Sewage extraction PY - 2020 AN - OPUS4-51978 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - Flying Ant Robot – Aerial Chemical Trail Detection and Localization N2 - This poster presents first advances in the area of aerial chemical trail following. For that purpose, we equipped a palm-size aerial robot, based on the Crazyflie 2.0 quadrocopter, with a small lightweight metal oxide gas sensor for measuring evaporated ethanol from chemical trails. To detect and localize the chemical trail, a novel detection criterion was developed that uses only relative changes in the transient phase of the sensor response, making it more robust in its application. We tested our setup in first crossing-trail experiments showing that our flying ant robot is able to correlate an odor hit with the chemical trail within 0.14 m. Principally, this could enable aerial chemical trail following in the future. T2 - IEEE Sensors 2021 CY - Online meeting DA - 31.10.2021 KW - Nano aerial robot KW - Trail following KW - Trail detection KW - Localization PY - 2021 AN - OPUS4-53934 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Nicolas P. T1 - Using Redundancy in a Sensor Network to Compensate Sensor Failures N2 - Sensors can fail. Redundancy should therefore be a design driver of wireless sensor networks. For a sensor network deployed in a steel factory, we analyze the correlations between sensors and build machine learning forecasting models, to investigate how well the network can compensate for the outage of sensors. T2 - IEEE SENSORS 2021 CY - Online meeting DA - 31.10.2021 KW - Environmental monitoring KW - Wireless sensor network KW - Sensor placement KW - Machine learning PY - 2021 AN - OPUS4-53940 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lagleder, Michaela T1 - Materialographische Untersuchungen an Bauteilen N2 - Eine Grundanforderung an Bauteile ist deren mechanische Integrität, die als Festigkeit (globale Bauteilbeanspruchung) bzw. Tragfestigkeit (lokale Beanspruchung) zu verstehen ist. Die Bauteilfestigkeit wird wesentlich durch das Materialgefüge bestimmt und kann über die Prüfung der Härte des Grundwerkstoffes lokal erfasst werden. Bei Bauteilverbindungen (z.B. Schweißnähte) ist zudem der Übergangsbereich zwischen den Fügeteilen von besonderem Interesse, bei Passungen oder Gleitlagern sind zudem geringe Rauheiten erforderlich, die oft durch mechanische Oberflächen-bearbeitung realisiert werden. Leichtbauweisen können sowohl über hochfeste Stahllegierungen bei geringem Materialeinsatz als auch über Aluminiumlegierungen realisiert werden. Für unterschied-liche Grundwerkstoffe (X2CrNiMo18-14-3, Co-Cr-W-Ni, AlSi10Mg, X5CrNi1810, ferritische Schweiß-nähte) werden an Quer- und Oberflächenschliffen Änderungen im Gefüge, morphologische Besonderheiten, Härteverläufe sowie Änderungen in den Rauheitskennwerten betrachtet, wie sie im Ergebnis mechanischer Oberflächenbearbeitung, bedingt durch den Herstellungsprozess, die Beanspruchung oder den Fügeprozess auftreten. Zur Validierung der Härtebestimmung wurde ein Laborvergleichsversuch an einer MPA-zertifizierten Härtevergleichsplatte und einer 100Cr6 Referenzprobe durchgeführt, den drei bzw. fünf der insgesamt fünf Teilnehmer bestanden. T2 - 55. Materialographie-Tagung CY - Online meeting DA - 29.09.2021 KW - Gleitlinien KW - Rauheit KW - Härteverlauf Schweißnaht KW - Laborvergleich Härte KW - Aluminium PY - 2021 AN - OPUS4-53503 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Netzband, Olivia T1 - Materialographische Untersuchungen an Funktionsschichten N2 - Oberflächenmodifizierte Grundwerkstoffe, insbesondere solche mit funktionellen Schichten, sind in unterschiedlichsten Branchen und Anwendungen anzutreffen. Es werden Quer- und Kalottenschliffe von Einfach- und Mehrschichtsystemen mit Beispielen aus dem Bereich des Korrosions- und Verschleißschutzes sowie dekorativer Anwendungen auf unterschiedlichsten Grundwerkstoffen (X5CrNi1810 Stahl, 100Cr6 Stahl, Hartmetall, ABS und Pappe) vorgestellt. Ebenso vielfältig wie die Grundwerkstoffe sind die Oberflächenmodifizierungen mit Funktionsschichten auf Basis von Nitrierungen, Hartstoffen, diamantähnlichem Kohlenstoff, Metallisierungen und Lackschichten mit Interferenzpigmenten. Neben der Identifikation von Schichtdefekten gilt das Hauptaugenmerk der materialographischen Analyse der Erfüllung der Schichtdickenspezifikation und der Bewertung der Homogenität der Schichtdicke auch bei kritischen Geometrien. Zur Validierung der Schichtdicken- bzw. Längenbestimmung im Querschliff wurde ein Laborvergleichsversuch mit einem Nickel-beschichteten Kupferdraht durchgeführt, den alle der 10 Teilnehmer bestanden. T2 - 55. Materialographie-Tagung CY - Online meeting DA - 29.09.2021 KW - Metallographie KW - Schichtdicken KW - Korrosion KW - Kalottenverfahren PY - 2021 AN - OPUS4-53504 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rautenberg, Max T1 - Coordination Polymers for the Applications in Electrochemical Devices N2 - Coordination polymers can be used as sacrificial templates to prepare nitrogen- and metal doped carbons (NMCs), which are promising catalysts for the oxygen reduction reaction. We at BAM employ mechanochemistry as a "green" synthetic approach to coordiantion polymers, which are throroughly characterized by methods such as XRD, XPS and sorption studies. Our collaborators can prepare NMCs from our coordination polymers and assess the catalytic activity thereof. T2 - 3rd Training School: "Mechanochemistry: from supramolecular to covalent bonds - synthesis and strctural characterization CY - Lisbon, Portugal DA - 22.03.2021 KW - PGM-free catalyst KW - Mechanochemistry KW - MOFs KW - Electrocatalysis KW - Oxygen reduction reaction (ORR) PY - 2021 AN - OPUS4-53536 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kanzler, D. A1 - Rentala, V. A1 - Bertovic, Marija A1 - Heckel, Thomas A1 - Rosenthal, Martina A1 - Keßler, S. A1 - Dethof, F. A1 - Stolz, R. A1 - Jüngert, A. A1 - Vrana, J. T1 - Die deutschen Bestrebungen zur Normierung der Fähigkeits- und Zuverlässigkeitsbewertung der zerstörungsfreien Prüfung N2 - Seit 1999 existiert das MIL-HDBK 1823, die us-amerikanische Leitfaden zur Erstellung einer Probability of Detection (POD; Fehlerdetektionswahrscheinlichkeit). Obwohl das Dokument als internationaler Stand der Technik angesehen wird, ist die allgemeine Anwendung in der ZfP-Praxis von einigen Nachteilen begleitet: 1. Die beschriebenen POD‘s bilden ausschließlich die Grundlagen-POD ab, jeweils mit nur einem Fehlerparameter und einem Signalparameter. Modernere Ansätze werden hier nicht adressiert. 2. Die aktuelle Version verzichtet fast vollständig auf konkrete mathematische Formulierungen. 3. Die Richtlinie richtet sich hauptsächlich an die militärische Luftfahrt. 4. Das Dokument ist nur in englischer Sprache verfügbar. Mit Hilfe eines BMWi-Förderprojekts wird ein weiterführendes Regelwerk auf Basis der MIL-HDBK 1823 unter deutscher Federführung erarbeitet, welches die Anwendung der POD-Berechnung auf eine breitere Basis stellt und die oben genannten Nachteile der MIL-HDBK 1823 behebt. Das vorgestellte Projekt „normPOD“ wird eine normative, branchenübergreifend einsetzbare Beschreibung des Vorgehens bei der Berechnung einer POD zur Zuverlässigkeitsbewertung zerstörungsfreier Prüfungen entwickeln. Hierbei wird Klarheit über unterschiedliche POD-Ansätze geschaffen und anhand praktischer Beispiele aus Maschinenbau und Bauwesen ein Leitfaden für den Praxiseinsatz erarbeitet. Das Poster gibt einen Überblick über die geplanten Arbeiten innerhalb des Projekts und lädt die Beteiligten der DGZfP-Jahrestagung zur Diskussion ein, um eine breite Basis und Akzeptanz für die entwickelten Berechnungsverfahren zu schaffen, insbesondere in Hinblick auf ZfP 4.0 und Digitalisierung. T2 - Jahrestagung der DGZfP CY - Online meeting DA - 10.05.2021 KW - Zerstörungsfreie Prüfung KW - ZfP KW - Zuverlässigkeit KW - Standardisierung KW - Human Factors PY - 2021 AN - OPUS4-53547 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Carstensen, Niels T1 - Generation of Tribosystems by Additive Surface Treatment on Tool Steel Substrate N2 - Laser implantation aims at reducing friction and wear on highly stressed surfaces in forming processes. Especially the hot stamping process that is used as a resource efficient process for manufacturing geometrical complex and high-strength structures, exhibits severe wear and high friction during the forming operation. The laser implantation process addresses this problem by combining two different approaches (surface modification and surface structuring) in surface technology by creating elevated, highly wear-resistant micro-features to influence the tribological performance. Pure TiB2 implants have shown to reduce tool-sided wear significally and improve the part formability by reducing local necking in deep drawing tests. Within the scope of this work, TiB2-TiC and TiB2-TaC hard material mixtures are implanted on X38CrMoV5-3 hot work tool steel. The aim is to investigate how the implant material properties can be influenced by the application of different mixing ratios of hard material mixtures under the specific variation of the process parameters. Distinct implant formations are tested on a novel test apparatus to examine the influence on the tribological properties. From the analyses of the implant properties by hardness measurements, light microscopic images, EDX and XRD analyses process parameter ranges are identified to produce defect-free dome- and ring-shaped implants. The specific process parameters (pulse power, pulse duration, mixing ratio and coating thickness) can be used for the determination of the implant geometry (height, width and depth). The tribological tests exhibit improved friction and wear properties. Based on these results, a tribosystem manufactured by this additive surface treatment technology shows great potential to enhance the effectiveness of the hot stamping process. T2 - Friction 2021 CY - Sankt Augustin, Germany DA - 18.11.2021 KW - Laser implantation KW - Surface modification KW - Additive surface treatment KW - Hot stamping KW - Tool steel PY - 2021 AN - OPUS4-53809 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völker, Tobias T1 - Round robin test for chloride analysis in cement pastes with LIBS N2 - In civil engineering, clear regulations and standards, such as the European standard DIN EN 206 apply to ensure that the existing infrastructure is sufficiently resistant to a wide range of exposure conditions. Despite these regulations, in practice concrete structures often show severe damage during their service life. One of these damages is pitting corrosion of the reinforcement, which can be caused by chloride ingress into the structure. Therefore, determining the distribution and depth of chloride ingress is important in predicting the service life. LIBS provides an alternative method to conventional wet chemistry in civil engineering. Despite many advantages, the use of LIBS has been severely limited due to a lack of regulations. Together with project partners from research and industry, we are currently working on a leaflet that will regulate chloride analysis in civil engineering using LIBS. This year, an international round robin test was organized to evaluate the performance of LIBS for chloride analysis in cement pastes. No specifications were given for the experimental LIBS setup and data evaluation. The preliminary results are presented. T2 - 11th Euro-Mediterranean Symposium on Laser-Induced Breakdown Spectroscopy (EMSLIBS) CY - Online meeting DA - 29.11.2021 KW - LIBS KW - Cement KW - Chloride KW - Round robin KW - Interlaboratory comparison PY - 2021 AN - OPUS4-53898 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gottlieb, C. T1 - Optimization of LIBS experiments using Design of experiment (DoE) N2 - To conduct a reliable, repeatable and accurate LIBS analysis, the optimization of the experimental setup is an important task. Hardware parameters of lasers and spectrometers used in the setup as well as additionally required components such as optics or process gas pipes must be carefully aligned and adjusted because factors like (i) focal conditions of the optics, (ii) alignment of the sample, (iii) process purge gas (types, flow rate) or (iv) measurement settings (integration time, accumulation of pulses) have a big impact on the signal quality. Therefore, in most cases the effect of different factors is evaluated empirically due to changing one factor at a time while keeping the overall configuration the same. In the end, the optimal configuration is selected based on the best parameters for each influencing factor. During optimization, a configuration of the experimental setup is aimed at, which allows e.g. the highest signal intensity or the lowest variation. In most cases, cross-correlation, interference and interaction among the various factors are not considered. For this reason, the possibilities of using Design of Experiment (DoE) to optimize a LIBS experiment will be shown and advantages of (i) reduction of testing plans using a feature space, (ii) identifying and considering cross-correlations and interactions, (iii) evaluating individual impacts on the measurement (e.g. contour and surface plots) as well as (iv) multivariate models for prediction of impacts will be presented. T2 - 11th Euro-Mediterranean Symposium on Laser-Induced Breakdown Spectroscopy (EMSLIBS) CY - Online meeting DA - 29.11.2021 KW - LIBS KW - Chlorine KW - DoE PY - 2021 AN - OPUS4-53899 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Laser dielectric breakdown as a novel method for producing molybdenum borides N2 - Superhard materials with a Vickers hardness in the range of 30-40 GPa are of great interest, both from a fundamental and a practical viewpoints, since they have outstanding mechanical, thermal and chemical properties. Molybdenum borides belong to this group of materials. A review of publications on synthesis of molybdenum boride indicates a) great interest in this superhard material and b) the need for new effective methods of its synthesis, especially in a nanocrystalline form. Very promising are the plasma-chemical methods based on laser induced breakdown. The breakdown can be created either in reactive gases containing volatile compounds of boron and molybdenum or on solid samples. For gas breakdown, molybdenum hexafluoride MoF6 and boron trifluoride BF3 were used in the mixture with hydrogen and argon; for solid breakdown, the pure molybdenum sample was ablated into the mixture of H2 and BF3. The plasma-chemical synthesis of MoxBy structures was carried out in the reactor shown in Figure. Laser breakdown was created by a pulsed Nd: YAG laser operating at 1064 nm with a 15 ns pulse duration, 5 Hz repetition rate, and 800 mJ pulse energy. The laser was focused by a 5 cm focal length lens to produce 26 J/cm3 energy density in the focal point. The ratios H2:BF3: MoF6 = 5:2:1 and H2:BF3 = 3:1 were used in a pressure range 30 - 760 Torr. After ablation in the mixture H2 + BF3 + MoF6, the deposit contained an amorphous phase with a small impurity of crystalline molybdenum and no boride phase. After ablation of metallic Mo into H2 + BF3, the main phase was MoB2 in the form of nano dispersed powder with an average grain size of 100 nm. The degree of conversion of boron trifluoride and the yield of molybdenum boride were studied as a function of pressure. It was established that 30 Torr is optimal for the formation of MoB2. This work was supported by the Russian Science Foundation grant No. 20-13-00035. T2 - Euro-Mediterranean Symposium on Laser-Induced Breakdown Spectroscopy CY - Online meeting DA - 29.11.2021 KW - Plasma enhanced chemical deposition KW - Laser induced plasma KW - Plasma chemistry KW - Molybdenum boride PY - 2021 AN - OPUS4-53901 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völker, Christoph T1 - Presenting “SLAMD” - The Sequential Learning App for Materials Discovery N2 - Environmentally friendly alternatives to cement are created through the synthesis of numerous base materials. The variation of their proportions alone leads to millions of materials candidates. Identifying suitable materials is very laborious; traditional systematic research in the laboratory consumes a lot of time and effort. Sequential learning (SL) potentially speeds up the materials research process despite limited but highly complex available information. SL does not make direct predictions of material properties but ranks possible experiments according to their utility. The most promising experiments are prioritized over dead-end experiments and experiments whose outcome is already known. Our work has shown that SL seems to be promising for cement research. So far, research has mainly focused on materials whose synthesis is faster and whose material properties require less time for development or characterization (allowing many successive experiments). Contrarily, in the case of binders, SL is only useful if few experiments lead to the desired goal, as for example, the determination of the compressive strength alone typically requires 28 days. In research practice, experimental designs and the availability of resources often determine which data can be used - for example, when some laboratory resources are not available or deemed irrelevant to a task. As a result, new research scenarios are constantly emerging, each of which requires to demonstrate SL’s performance. We are presenting the SLAMD app to facilitate the exploration of SL methods in numerous research scenarios. The app provides flexible and low-threshold access to AI methods via intuitive and interactive user interfaces. We deliberately pursue a software-based research approach (as opposed to code-, or script-based). On the one hand, the results are more comprehensible since we refer to a common (code) basis (’reproducible science’). On the other hand, the methods are easily accessible to all which accelerates the knowledge transfer into laboratory practice. T2 - DGM Materials Week 2021 CY - Online meeting DA - 07.09.2021 KW - Sequential learning KW - Scientific software KW - Alcali activated binders PY - 2021 AN - OPUS4-54128 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ahmadi, Samim T1 - Neue Verfahren der thermografischen Super Resolution mit strukturierter 1D-Lasererwärmung N2 - Die thermografische ZfP basiert auf der Wechselwirkung von thermischen Wellen mit Inhomogenitäten. Die Ausbreitung von thermischen Wellen von der Wärmequelle zur Inhomogenität und zur Detektionsoberfläche entsprechend der thermischen Diffusionsgleichung führt dazu, dass zwei eng beieinander liegende Defekte fälschlicherweise als ein Defekt im gemessenen Thermogramm erkannt werden können. Um diese räumliche Auflösungsgrenze zu durchbrechen, also eine Super Resolution zu realisieren, kann die Kombination von räumlich strukturierter Erwärmung und numerischen Verfahren des Compressed Sensings verwendet werden. Für unsere Arbeiten benutzen wir Hochleistungs-Laser im Kilowatt-Bereich um die Probe entweder hochaufgelöst entlang einer Linie (1D) abzurastern oder strukturiert zu erwärmen. Die Verbesserung des räumlichen Auflösungsvermögens zur Defekterkennung hängt dann im klassischen Sinne direkt von der Anzahl der Messungen ab. Mithilfe des Compressed Sensings und Vorkenntnissen über das System ist es jedoch möglich die Anzahl der Messungen zu reduzieren und trotzdem Super Resolution zu erzielen. Wie viele Messungen notwendig sind und wie groß der Auflösungsgewinn gegenüber der konventionellen thermografischen Prüfung mit flächiger Erwärmung ist, hängt von einer Reihe von Messparametern, der Messstrategie, Probeneigenschaften und den verwendeten Rekonstruktionsalgorithmen ab. Unsere Studien befassen sich mit dem Einfluss der experimentellen Parameter, wie z.B. der Pulslänge der Laserbeleuchtung und der Größe des Laserspots. Weiterhin haben wir uns mit der Wahl der Parameter in der Rekonstruktion auseinandergesetzt, die einen Einfluss auf das im Compressed Sensing zugrundeliegende Minimierungsproblem haben. Für jeden getesteten Parametersatz wurde eine Rekonstruktionsqualität berechnet. Schließlich wurden die Defektrekonstruktionen basierend auf den Parameternsätzen verglichen, sodass eine Parameterwahl für hohe Rekonstruktionsqualitäten mit thermografischer Super Resolution empfohlen werden kann. T2 - DGZfP-Jahrestagung 2021 CY - Online meeting DA - 10.05.2021 KW - Super resolution KW - Thermografie KW - Strukturiert KW - Photothermisch PY - 2021 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-527820 AN - OPUS4-52782 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bischoff, Tristan T1 - Heat storage testing method with realistic operating conditions N2 - Development of a new testing method for comparing efficient stratified heat storages. T2 - World sustainable energy days CY - Online meeting DA - 21.06.2021 KW - Heat storage KW - Stratification KW - Testing Methods KW - Exergy KW - Load profile PY - 2021 AN - OPUS4-52791 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ewert, U. T1 - Schnelle Messung und tomographische Rekonstruktion von Brennflecken < 5 μm durch Aufnahmen strukturierter Prüfkörper N2 - Im Europäischen EMPIR-Projekt „NanoXSpot“ (Measurement of the focal spot size of Xray tubes with spot sizes down to 100 nm) werden neue Messmethoden für Brennflecke von Röntgenröhren entwickelt. Teil des Projektes ist die Entwicklung eines zur Lochkameramethode äquivalenten Messverfahrens für kleine Brennflecke. ASTM E 1165-20, Annex A, beschreibt die Bestimmung von Brennfleckgrößen aus Kantenprofilen von Lochaufnahmen für Röntgenröhren mit Brennflecken > 50 μm. Es wurde bereits vorgeschlagen über die Analyse der richtungsabhängigen Kantenunschärfe einer Lochblende und anschließender CT-Rekonstruktion die Intensitätsverteilung des Brennflecks äquivalent zur Lochkameraaufnahme zu berechnen. Die Lochkameramethode, wie in EN 12543-2 und ASTM E 1165-20 beschrieben, ist im unteren Größenbereich für Mikrofokusröhren nicht geeignet, da Pinholes < 10 μm schwer zu fertigen sind und lange Belichtungszeiten erwartet werden. Mit Hilfe exakt gefertigter Lochblenden sowie strukturierter Targets mit konvergierenden Strukturen wird der Bereich mit der Single-Shot-CT-Methode auf die Messung von Mikrofokusröhren, alternativ zur Vermessung von Kanten oder Strichgruppenkörpern, erweitert. Die rekonstruierten Brennfleckformen werden mit Kanten und Lochkameraaufnahmen quantitativ verglichen, um die Messgenauigkeit zu bewerten. Außerdem werden CNR und Messzeit bestimmt, um die Wirtschaftlichkeit der Verfahren zu bewerten. T2 - DGZfP-Jahrestagung 2021 CY - Online meeting DA - 10.05.2021 KW - Radiographie KW - Tomographie KW - Röntgenröhren KW - Charakterisierung von Brennflecken PY - 2021 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-526692 UR - https://jahrestagung.dgzfp.de/Programm#P15 AN - OPUS4-52669 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhne, Patrick T1 - Limits of computer tomography aided characterization of different types of porous ceramic materials N2 - Ceramics with open porosity are attractive materials in many fields of applications covering medicine, catalysis, and filtration. Manifold technologies to produce porous ceramics are available, e.g. foaming and replica processes, resulting in various microstructures. Development and manufacturing of new materials is accelerating, while crucial characterization is becoming increasingly difficult and conventional measurements lack the desired speed. Computed tomography (CT) offers the possibility to three-dimensionally characterize entire samples with minimal sample preparation, while its main advantage is that it is non-destructive. Still, the assessment of quantitative results from CT measurements is not trivial. The poster presents CT characterizations of newly developed as well as commercially available openly porous ceramic samples. Properties such as porosity, permeability or pore characteristics were measured conventionally and compared to results calculated from CT-measurements using the commercial software VG StudioMax. The determined differences between measured and calculated values are presented and application areas as well as limits of the CT characterization are evaluated. T2 - Jahrestagung der Deutschen keramischen Gesellschaft 2021 CY - Online Meeting DA - 19.04.2021 KW - Ceramic KW - Porosity PY - 2021 AN - OPUS4-52724 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisentraut, Paul T1 - Mikroplastikanalytik mittels TED-GC/MS: H/D-Austausch an Zersetzungsprodukten von D-markiertem Polystyrol als interner Standard N2 - Deuteriertes Polystyrol (D-PS) verbessert die Mikroplastikdetektion mit der TED-GC/MS, u.a. durch höhere Reproduzierbarkeit. Es ist kostengünstig (0,1 ct/Analyse) und durch die gute Löslichkeit (z.B. in Toluol) schnell und reproduzierbar zu dosieren. Bestimmte Matrices führen jedoch zu einem Austausch des Deuteriums durchWasserstoff. Das Poster zeigt das Messprinzip, bei welchen Matrices H/D-Austausch erfolgt, Ergebnisse von Kinetikuntersuchungen sowie Möglichkeiten, den Austausch zu verhindern oder zu umgehen. T2 - Tagung der Wasserchemischen Gesellschaft CY - Online Meeting DA - 10.05.2021 KW - Mikroplastik KW - Analyse KW - Interner Standard KW - H/D-Austausch PY - 2021 AN - OPUS4-52727 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ecke, Alexander T1 - Magnetic Bead-Based Immunoassays for Online Sensing Applications N2 - The demand for quick and reliable online sensors is rising not only in the field of environmental analysis with new and diversifying sources of pollution. A major aspect of this is the contamination of (drinking) water with pharmaceuticals representing a potential health threat and requiring timely countermeasures in case of contamination. In this regard, antibody-based methods can be helpful as they enable fast and cost-effective on-site and potentially online analyses. The transition from the conventional plate-based formats like ELISA (enzyme-linked immunosorbent assay) to an immunosensor fit for online sensing can be achieved by using magnetic microparticles as a mobile sensing platform. Beads are prepared by either coupling the antibody or the analyte to the surface. Both these strategies are presented using the example of two relevant contaminants in water: diclofenac (DCF) & amoxicillin (AMX), and can be transferred to other analytes. The developed magnetic bead-based assays (MBBAs) exhibit lower LODs, enhanced sensitivity as well as shorter time of analysis than the respective ELISAs and can be integrated into an immunosensor with electrochemical detection on a microfluidic chip. T2 - European Biosensor Symposium 2021 CY - Online meeting DA - 09.03.2021 KW - Immunoassay KW - Magnetic Beads KW - Diclofenac KW - Amoxicillin KW - Online Sensing PY - 2021 AN - OPUS4-52285 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riedel, Soraya T1 - Smartphone-based amperometric detection of 3,3′,5,5′-tetramethylbenzidine (TMB) – An immunomagnetic Ochratoxin A assay N2 - The demand for miniaturized analytical devices monitoring important parameters in the food and medical industry has increased strongly in the past decades. With fast progress, smart technologies are finding their way into our everyday life. For the future, it is, therefore, a major goal to also link analytical methods with smart technologies to create user-friendly on-site devices. In food industry the monitoring of harmful substances such as dioxins, heavy metals or mycotoxins plays a key role, since the European Commission prescribes legal limits for various food products and beverages[1]. Therefore, companies often have their own laboratories and trained personnel. For one of the most abundant and toxic mycotoxins, Ochratoxin A (OTA) we want to present an electrochemical detection system in which the read-out can be performed with a smartphone connected via Bluetooth to a miniaturized potentiostat. The recognition of OTA is performed with specific antibodies in a competitive assay format. Anti-OTA-antibodies were captured on magnetic beads on which the competitive binding between OTA and an OTA horseradish peroxidase (HRP) tracer was performed. To quantify OTA, the enzymatic reaction of the tracer with 3,3′,5,5′-tetramethylbenzidine (TMB) and H2O2 is employed. Oxidized TMB, which is enzymatically produced by the reduction of H2O2, is quantified by amperometry with screen-printed electrodes in a custom-made flow system. Since it is well-known that oxidized TMB can precipitate on electrode surfaces[2], we have studied pitfalls of the electrochemical detection of TMB. By cyclic voltammetry we have compared the stability of the electrochemistry of TMB at different electrode materials (gold and carbon) and pH values (pH 1 and pH 4). It was found that a stable response of the electrode could be achieved at pH 1 on gold electrodes. Thus, we applied these reaction conditions for amperometric detection of TMB in the OTA assay. The results of the electrochemical detection method are in good correlation with the photometric detection of TMB. To demonstrate the applicability, we tested our system with OTA-spiked beer and performed the measurement via smartphone. T2 - European Biosensor Symposium 2021 CY - Online meeting DA - 09.03.2021 KW - Ochratoxin A KW - Cyclic voltammetry KW - Amperometry KW - Smartphone KW - Immunoassay PY - 2021 N1 - Geburtsname von Riedel, Soraya: Höfs, S. - Birth name of Riedel, Soraya: Höfs, S. AN - OPUS4-52269 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kolmangadi, Mohamed Aejaz T1 - Molecular dynamics of Janus Polynorbornenes: Glass Transitions and Nanophase separation N2 - For the first time, dielectric and calorimetric investigations of a homologous series of Janus polynorbornenes with rigid main backbones and flexible −Si(OR)3 side groups of differing length alkyl chains (R = propyl, butyl, hexyl, octyl, and decyl) is reported. Generally, this class of polymers has some potential for applications in the field of gas separation membranes. Two dielectrically active processes are observed at low temperatures, denoted as β- and α-relaxation. The former can be assigned to localized fluctuations, while the latter is related to the glassy dynamics of the flexible −Si(OR)3 side groups, creating a nanophase separation in both the alkyl chain-rich and backbone-rich domains. This is confirmed through temperature-modulated differential scanning calorimetry (TMDSC) measurements and X-ray scattering experiments. The glass transition temperatures of the backbone rich domains, which are beyond or near to their degradation temperatures in terms of conventional DSC, are determined for the first time using fast scanning calorimetry employing both fast heating and cooling rates. This is complemented with scattering experiments that show how the size of the alkyl chain-rich domains increases with the side chain length. Alongside these results, a significant conductivity contribution was observed for all poly(tricyclononenes) with −Si(OR)3 side groups, which is interpreted in terms of a percolation model. T2 - DPG Online Spring Conference 2021 CY - Online meeting DA - 22.03.2021 KW - Dynamics KW - Glass transition KW - Conductivity PY - 2021 AN - OPUS4-52335 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wosniok, Aleksander T1 - Faseroptische Strahlungssensoren für kerntechnische Anwendungen N2 - Faseroptische Strahlungssensoren ermöglichen ein räumlich verteiltes Online-Monitoring entlang der gesamten Sensorfaser. Verschiedene Messverfahren nutzen überwiegend zwei durch die ionisierende Strahlung in optischen Fasern induzierte Effekte, d. h. die Erhöhung der optischen Dämpfung und die damit verbundene Veränderung des Brechungsindex des Fasermaterials. Die Sensitivität der Strahlungssensoren lässt sich je nach Anwendung durch die Wahl der Dotierstoffe im Glasfaserkern sowie der Art des Polymermaterials des POF-Sensors beeinflussen. Ferner ist die Sensitivität auch durch den Betrieb bei geeigneten Wellenlängen einstellbar. Bei dem sensorischen Einsatz von faseroptischen Sensoren muss auch die vorhandene Ausheilung des Sensors sowie die Abhängigkeit der erfassten Messsignale von der Temperatur und der Dosisleistung berücksichtigt werden. T2 - 2. Tage der Standortauswahl CY - Online meeting DA - 11.02.2021 KW - Faseroptischer Strahlungssensor KW - Ortsauflösende Fasersensorik KW - Strahlungsinduzierte optische Dämpfung PY - 2021 AN - OPUS4-52113 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gehrenkemper, Lennart T1 - Organically bound fluorine in river water - A methode comparison of CIC and HR-CS-GFMAS N2 - Abstract: Since it is unknown for many applications, which PFASs are used and how they enter the environment, target analysis-based methods reach their limits. The two most frequently used sum parameters are the adsorbable organically bound fluorine (AOF) and the extractable organically bound fluorine (EOF). Both can be quantified using either combustion ion chromatography (CIC) or high resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS). Here we provide an insight on the advantageous and disadvantageous of both sum parameters and both detection methods. Our study is based on the analysis of surface water samples. Next to total fluorine (TF) analysis, AOF and EOF were determined as well as CIC and HR-CS-GFMAS are compared and results are comparatively discussed. Fluorine mass balancing revealed that, the AOF/TF proportion was higher than the EOF/TF proportion. The AOF made up 0.14–0.81% of TF and the EOF 0.04–0.28% of TF. Although, organically bound fluorine represents only a small portion of TF, PFASs are of worldwide concern, because of their extreme persistence and their bioaccumulation potential. The EOF-HR-CS-GFMAS method turned out to be more precise and sensitive than the AOF-CIC method and is a promising tool for future monitoring studies/routine analysis of PFASs in the environment. T2 - SALSA Make and Measure 2020: Advanced Characterization of Materials CY - Online meeting DA - 15.10.2020 KW - High resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS) KW - Combustion ion chromatography (CIC) KW - Per- and polyfluorinated alkyl substances (PFASs) KW - Adsorbable organically bound fluorine (AOF) KW - Extractable organically bound fluorine (EOF) KW - Surfacewaters PY - 2020 AN - OPUS4-52451 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lecompagnon, Julien T1 - Thermografische Super Resolution mit 2D-strukturierter Erwärmung N2 - Thermografische Super Resolution ermöglicht die Auflösung von Defekten/Inhomogenitäten unterhalb des klassischen Limits, welches durch die Diffusionseigenschaften der thermischen Wellenausbreitung bestimmt wird. Basierend auf einer Kombination aus der Anwendung spezieller Abtaststrategien und einer anschließenden numerischen Optimierungsschritt bei der Datenauswertung hat sich die thermografische Super Resolution bereits bei der Detektion von 1D-Defekten gegenüber den Standard-Thermografieverfahren als überlegen erwiesen. In unserer Arbeit erweitern wir die Möglichkeiten der Methode zur effizienten Detektion und Auflösung von Defektquerschnitten mit einer vollständig 2D-strukturierten Erwärmung. Der experimentelle Ansatz basiert auf einer wiederholten räumlich strukturierten Erwärmung durch einen Hochleistungslaser. In einem zweiten Nachbearbeitungsschritt werden mehrere kohärente Messungen mittels mathematischer Optimierung und unter Ausnutzung der (Joint-) Sparsity der Defekte innerhalb des Prüfkörpers kombiniert. Als Ergebnis kann eine 2D-sparse Defekt-/ Inhomogenitätskarte erhalten werden. Da die Kombination von räumlich strukturierter Erwärmung und anschließender numerischer Kombination mehrerer kohärenter Messungen nicht nur die Auflösung verbessert, sondern auch die Messkomplexität drastisch erhöht, werden verschiedene Scanstrategien untersucht. Abschließend werden die erhaltenen Ergebnisse mit denen konventioneller thermografischer Prüfverfahren verglichen. T2 - DGZfP-Jahrestagung 2021 CY - Online meeting DA - 10.05.2021 KW - Thermography KW - Super-resolution KW - NDT KW - Inspection KW - Image resolution PY - 2021 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-526396 UR - https://jahrestagung.dgzfp.de/Programm#P45 AN - OPUS4-52639 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ecke, Alexander T1 - Magnetpartikelbasierte Immunoassays für die Online-Trinkwasseranalytik N2 - Die zunehmende Kontamination von (Trink)-Wasser mit pharmazeutischen Rückständen stellt ein potenzielles Gesundheitsrisiko dar und verlangt nach schnellen und zuverlässigen Analysemethoden. Hierbei können antikörper-basierte Methoden helfen, da sie schnelle und kostengünstige Vor-Ort-Messungen sowie Onlineanalysen ermöglichen. Der Übergang von konventionellen plattenbasierten Formaten, wie ELISA (Enzyme-linked Immunosorbent Assay), zu einem Immunosensor für Online-Messungen wird durch den Einsatz magnetischer Mikropartikel als mobile Messplattform ermöglicht. Die Partikel werden dazu entweder mit dem Antikörper oder dem Analyten gekoppelt. Diese beiden Strategien werden am Beispiel zweier relevanter Kontaminanten des Wassers gezeigt: Diclofenac (DCF) & Amoxicillin (AMX), und sind leicht auf andere Analyten übertragbar. Die magnetpartikelbasierten Assays (MBBAs) weisen niedrigere Nachweisgrenzen, breitere Messbereiche sowie kürzere Analysezeiten als die entsprechenden ELISAs auf und können in einen Immunosensor mit elektrochemischer Detektion auf einem mikrofluidischen Chip integriert werden. T2 - Wasser 2021 CY - Online meeting DA - 10.05.2021 KW - Immunoassay KW - Immunosensor KW - Magnetpartikel KW - Amoxicillin KW - Diclofenac PY - 2021 AN - OPUS4-52640 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaal, Mate T1 - Charakterisierung von luftgekoppelten Ultraschallwandlern N2 - Mit dem steigenden Einsatz der luftgekoppelten Ultraschallprüfung steigt auch der Bedarf an verlässlichen Methoden der Charakterisierung der eingesetzten Technik. Mehrere unterschiedliche Verfahren zur Charakterisierung von luftgekoppelten Wandlern und der entsprechenden Gerätetechnik werden verwendet. Prüfkopf-Datenblätter verschiedener Hersteller beinhalten unterschiedliche Prüfkopfparameter, wobei oft eigene Verfahren für die Charakterisierung dieser Prüfköpfe verwendet werden. Diese Vielfalt der Parameter und Verfahren erschwert den potenziellen Kunden den Vergleich zwischen den Prüfköpfen unterschiedlicher Hersteller. Daraus ergibt sich der Bedarf, die Verfahren zur Charakterisierung von luftgekoppelten Ultraschallwandlern zu standardisieren. Vorrangig diese Überlegungen bewegten Hersteller von luftgekoppelten Ultraschallwandlern, Forschungseinrichtungen und Anwender sich zu vernetzen und im Rahmen des Fachausschusses „Ultraschall“ den Unterausschuss „Luftgekoppelte Ultraschallprüfung“ zu gründen. Als erstes Ziel hat sich der Unterausschuss die Erarbeitung einer Richtlinie zur Charakterisierung von luftgekoppelten Ultraschallwandlern gesetzt. Dieser Beitrag ist ein Überblick über viele Methoden zur Charakterisierung von luftgekoppelten Ultraschallwandlern, mit dem Schwerpunkt auf der akustischen Charakterisierung. Zu den wichtigsten Wandlerparametern gehören Empfindlichkeit, Mittenfrequenz, Bandbreite, Fokusgröße und Fokusabstand. Verschiedene Methoden der Schallfeldvermessung werden untereinander verglichen. Diese Überlegungen bieten den Ausgangspunkt für spätere Arbeit an einer Richtlinie zur Charakterisierung von luftgekoppelten Ultraschallwandlern. T2 - DGZfP-Jahrestagung 2021 CY - Online meeting DA - 10.05.2021 KW - Luftgekoppelte Ultraschallprüfung KW - Richtlinie KW - Ultraschallwandler KW - Charakterisierung PY - 2021 AN - OPUS4-52642 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gautzsch, T. T1 - Luftgekoppelte Ultraschallprüfung, eine Alternative in der zerstörungsfreien Prüfung N2 - Die luftgekoppelte Ultraschallprüfung (ACUT) ist ein vielfach bewährtes zerstörungsfreies Prüfverfahren, welches von vielen Anwendern jedoch nur am Rande oder gar nicht wahrgenommen wird. Insbesondere, die nach wie vor in der Ultraschallausbildung gelehrten Theorien zur wellenlängenabhängigen minimalen detektierbaren Fehlergröße und die vermeintliche Notwendigkeit der Verwendung von Koppelmittel schrecken viele potentielle Anwender davon ab für ihr Prüfproblem ACUT in Betracht zu ziehen. Des Weiteren wird ACUT häufig nicht als eigenständiges Prüfverfahren erkannt, sodass versucht wird, flüssigkeitsgekoppelte Ultraschallprüfungen ohne Beachtung der Besonderheiten zu ersetzen. T2 - DGZfP-Jahrestagung 2021 CY - Online meeting DA - 10.05.2021 KW - Luftgekoppelte Ultraschallprüfung PY - 2021 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-526431 UR - https://jahrestagung.dgzfp.de/Programm#P53 AN - OPUS4-52643 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wosniok, Aleksander T1 - Ortsaufgelöste Zustandsüberwachung von Brückenbauwerken mittels faseroptischer Sensoren N2 - In der vorliegenden Studie wurde der Einfluss der statischen Verkehrsbelastung auf die geringen Durchbiegungseffekte in der Betonkonstruktion einer bestehenden Brücke mittels ortsauflösender faseroptischer Sensoren untersucht. Dabei tragen die Ergebnisse der an der Amsterdamer Brücke 705 durchgeführten Belastungstests wesentlich zum Verständnis des Strukturverhaltens bei. Das Konzept der statischen Belastung basierte auf dem Einsatz von zwei 36-Tonnen-Lastwagen, die an mehreren vorbestimmten Stellen auf der Brücke anhielten. Die auf diese Weise aufgebrachte Last führte zu ortsabhängigen kleinen Durchbiegungseffekten, die als lokale Längsdehnung der an der Unterseite der Brücke integrierten Sensorfaser aufgezeichnet wurden. Die reflektometrischen Messungen beruhten auf dem Prinzip genannt TW-COTDR (Tunable Wavelength Coherent Optical Time Domain Reflectometry). Die Messgenauigkeit lag im Bereich von 0,5 µm/m. T2 - DGZfP-Jahrestagung 2021 CY - Online meeting DA - 10.05.2021 KW - Ortsaufgelöste Fasersensorik KW - Frequenzbereichsreflektometrie KW - Rayleigh-Streuung PY - 2021 UR - https://jahrestagung.dgzfp.de/Programm#P73 AN - OPUS4-52632 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ruwe, L. T1 - Experimental investigation on the performance of the standardized testing method for detonation fl ame arresters N2 - Detonation flame arresters are typically used as protection systems in industrial applications to prevent flame transmission from one section of a plant to another after an incidental ignition. Numerous processes in the chemical and petrochemical industry are taking place under non-atmospheric conditions (e.g., increased pressure and/or temperature) in order to optimize the production capabilities. To verify and examine the suitability of detonation flame arresters, a test method originating from the DIN EN ISO 16852 standard, which is mainly based on findings from experiments under atmospheric conditions, is used. In order to improve the reproducibility of detonation tests at high pressures, especially regarding the deflagration to detonation transition, test methods will be analyzed and improved. The main objective of this study is to develop an improved test method for detonation flame arresters, which offers a higher reproducibility and moreover, an applicability under non-atmospheric conditions. Therefore, an interlaboratory comparison on the performance of in-line flame arresters for stable and unstable detonations is jointly conducted by the project partners (PTB, BAM, Braunschweiger Flammenfilter GmbH and IBExU GmbH). The experiments are performed according to the test method regulated in the DIN EN ISO 16852 standard for different pressures before ignition and different explosion groups. Potential ambiguities of the standardized test method that might lead to the differing results at the different institutes are identified from the interlaboratory comparison. Based on these results, an improved test method for detonation flame arresters will be developed, which will ensure a greater safety at process plants while handling combustibles. T2 - 38th International Symposium on Combustion CY - Online meeting DA - 24.01.2021 KW - DIN EN ISO 16852 KW - Detonation KW - Flame arresters KW - Protection system PY - 2021 AN - OPUS4-52217 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riedel, Soraya T1 - Ochratoxin A detection by an immunomagnetic assay and smartphone-based amperometry N2 - The demand for miniaturized analytical devices monitoring important parameters in the food and medical industry has increased strongly in the past decades. With fast progress, smart technologies are finding their way into our everyday life. For the future, it is, therefore, a major goal to also link analytical methods with smart technologies to create user-friendly on-site devices. In food industry the monitoring of harmful substances such as dioxins, heavy metals or mycotoxins plays a key role, since the European Commission prescribes legal limits for various food products and beverages. Therefore, companies often have their own laboratories and trained personnel. For one of the most abundant and toxic mycotoxins, Ochratoxin A (OTA) we want to present an electrochemical detection system in which the read-out can be performed with a smartphone connected via Bluetooth to a miniaturized potentiostat. The recognition of OTA is performed with specific antibodies in a competitive assay format. Anti-OTA-antibodies were captured on magnetic beads on which the competitive binding between OTA and an OTA horseradish peroxidase (HRP) tracer was performed. To quantify OTA, the enzymatic reaction of the tracer with 3,3′,5,5′-tetramethylbenzidine (TMB) and H2O2 is employed. Oxidized TMB, which is enzymatically produced by the reduction of H2O2, is quantified by amperometry with screen-printed electrodes in a custom-made flow system. Since it is well-known that oxidized TMB can precipitate on electrode surfaces, we have studied pitfalls of the electrochemical detection of TMB. By cyclic voltammetry we have compared the stability of the electrochemistry of TMB at different electrode materials (gold and carbon) and pH values (pH 1 and pH 4). It was found that a stable response of the electrode could be achieved at pH 1 on gold electrodes. Thus, we applied these reaction conditions for amperometric detection of TMB in the OTA assay. The results of the electrochemical detection method are in good correlation with the photometric detection of TMB. To demonstrate the applicability, we tested our system with OTA-spiked beer and performed the measurement via smartphone. T2 - Rapid Methods Europe CY - Online meeting DA - 01.02.2021 KW - Ochratoxin A KW - Cyclic voltammetry KW - Amperometry KW - Smartphone KW - Electrochemistry PY - 2021 N1 - Geburtsname von Riedel, Soraya: Höfs, S. - Birth name of Riedel, Soraya: Höfs, S. AN - OPUS4-52095 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Li, Wei T1 - Crack propagation in filled and unfilled polymers: Separation of surface energy and irreversible deformation energy N2 - Fiber-reinforced-polymers (FRPs) are in current research focus in the lightweight construction industry, because of their extraordinary characteristics (stiffness and strength-to-density relation). The structure of polymer matrix and the interaction with reinforcement are crucial for optimization of the mechanical and thermal properties of FRPs. Due to the macromolecular chain structure, the mechanical properties of a polymer strongly vary with temperature: Below the glass transition, the chain segments of a polymer are “frozen”. Regarding fracture, the total changed energy during fracture if only dissipates for the generation of the new surfaces. However, in the region of the glass transition, the polymer chain segments start to get “unfrozen”, and the energy is not only required for generating new surfaces, but also for irreversibly deformation. This irreversible deformation is affected by the global temperature and the local temperature near the crack tip, which is affected by the local strain rate and crack propagation velocity. Hence, in this research project, the irreversible deformation of neat and reinforced polymers will be controlled by changing the global temperature as well as the local temperature. With using different fracture experiments, the amount of energy required for creating new surfaces and for the irreversible deformation will be separated. The fracture tests include the conventional tensile test, the macroscopic peel test and the single fiber peel – off test. T2 - PhD Day 2018 of BAM CY - Berlin, Germany DA - 31.05.2018 KW - Crack Propagation KW - Polymer PY - 2018 AN - OPUS4-48471 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Karafiludis, Stephanos T1 - Crystallisation and nucleation study of transition metal struvite and related compounds N2 - The recycling of critical elements has crucial importance to maintain sustainable use of raw materials. Phosphorus(P) is a sought-after limited natural resource due to its wide use in modern agriculture mainly as P-fertilizers. But it causes major problems for the environment such as eutrophication of ecosystems. In the future it could be depleted due to the high demand and declining natural phosphorite ore deposits. Therefore, the phosphorus recovery from agricultural waste waters will be an important factor in preservation of the global consumption. The precipitation of M-struvite (NH4MPO4·6H2O, M2+= Mg2+, Ni2+, Co2+, Zn2+, Cu2+ etc.) from agricultural and mine waste waters is a promising P-recovery route. Besides avoidance of eutrophication due to extraction of excess phosphates and the restoration of the phosphorus resources the recovered M-struvites may be potentially be up-cycled for industrial applications e.g. Co and Ni-phosphate show excellent electrochemical properties for batteries or supercapacitors. The precipitation processes of M-struvites are strongly dependent on the degree of supersaturation, pH and on the exchange ions M2+.The impact of transition metals on the crystallization of M-struvite has been investigated only to a limited extent. An optimization of the reaction conditions could lead to more efficient M-struvite precipitation and significantly improved P-recovery method. In addition, these materials form transitional amorphous colloidal nanophases on the way to the crystalline product indicating a non-classical crystallization pathway. By interfering the crystallization process a potential highly reactive amorphous precursor material can be preserved for electrocatalysis. Here, we present hints on the crystallization mechanism and the kinetics of precipitation through analysis of the transitional phases. Furthermore, we reveal the effect of different reaction conditions on the crystal shape and crystallite size of M-struvites (NH4MPO4∙6H2O, M = Mg2+, Ni2+, Co2+). In addition, we could evaluate the stability of crystalline M-struvites and their related phases through characterization of the coordination environment [Co-dittmarite (COD) NH4CoPO4∙H2O and Cobalt(II)phosphate octahydrate (CPO) Co3(PO4)2∙8H2O].Due to the low solubility product and their controlled precipitation through adjusting the reaction conditions (c(educts), pH, multi metal solutions) M-struvite is a promising recovery material as it could extract NH4+, PO43- and heavy metals at the same time out of agricultural and mine waste waters. T2 - IUCr 25th International Union of Crystallography Congress CY - Online meeting DA - 14.08.2021 KW - Crystal Engineering KW - Nucleation KW - Amorphous Phases KW - Crystal mechanism PY - 2021 AN - OPUS4-53445 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Karafiludis, Stephanos T1 - Crystallisation and nucleation study of transition metal phosphates: M-struvite and related compounds N2 - The recycling of critical elements has crucial importance to maintain sustainable use of raw materials. Phosphorus(P) is a sought-after limited natural resource due to its wide use in modern agriculture mainly as P-fertilizers. But it causes major problems for the environment such as eutrophication of ecosystems. In the future it could be depleted due to the high demand and declining natural phosphorite ore deposits. Therefore, the phosphorus recovery from mine and agricultural waste waters will be an important factor in preservation of the global consumption. The precipitation of M-struvite (NH4MPO4·6H2O, M2+= Mg2+, Ni2+, Co2+) from waste waters is a promising P-recovery route. Besides avoidance of eutrophication due to extraction of excess phosphates and the restoration of the phosphorus resources the recovered M-struvites may be potentially be up-cycled for industrial applications e.g. Co and Ni-phosphate show excellent electrochemical properties for batteries or supercapacitors. The precipitation process of M-struvites is strongly dependent on the degree of supersaturation, pH and on the exchange ions M2+.The influence of these precipitation parameters on the crystal morphology and size of transition metal struvite has been investigated only to a limited extent. An optimization of the reaction conditions could lead to more efficient M-struvite precipitation and significantly improved P-recovery method. We reveal the effect of different reaction conditions on the crystal shape and crystallite size of M-struvites (NH4MPO4∙6H2O, M = Mg2+, Ni2+, Co2+). Furthermore, we characterize the coordination environment of the crystalline end products and their related phases [Co-dittmarite (COD) NH4CoPO4∙H2O and Co(II)phosphate octahydrate (CPO) Co3(PO4)2∙8H2O]. Due to the presence of various amorphous phases pH is changing significantly in the different systems. Mg- and Ni-struvite are stable in multiple concentrations of the educts and metal/phosphorus (M/P) ratios in contrast to Co-struvite which forms below M/P ratios of 0.4. A high M/P ratio with high concentrations of the educts decrease the crystallite size and idiomorphism of the crystals while low M/P ratios with low concentrations of the educts increase the crystallite size and the euhedral formation of the crystal planes. In the (Ni, Co)-solid solutions Ni and Co are homogenously distributed in the crystals with similar Ni# as in the aqueous solutions indicating no elemental fractionation in crystallization. Ni and Co-struvite exhibit a more centrosymmetric coordination environment compared to their related phases of COD and CPO determined by EXAFS. The CoO6 octahedron expands slightly the ideal size of the struvite structure and decomposes to Co-dittmarite. From TEM analysis and pH measurements it is suggested that the crystallization of Ni- and Co-struvite follows a non-classical crystallization theory which consists of multiple nanophases, crystalline or amorphous, on the way to the final crystalline product. T2 - Goldschmidt Conference 2021 CY - Online meeting DA - 04.07.2021 KW - Crystal Engineering KW - Nucleation KW - Amorphous Phases KW - Crystal mechanism PY - 2021 UR - https://2021.goldschmidt.info/goldschmidt/2021/meetingapp.cgi/Paper/5288 AN - OPUS4-53446 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wu, Cheng-Chieh T1 - The Finite Volume Method in point of view of Finite Element Method N2 - The best-known discretization methods for solving engineering problems formulated as partial differential equations are finite difference method (FDM), finite element method (FEM) and finite volume method (FVM). While the finite volume method is used in fluid mechanics, the finite element method is predominant in solid state mechanics. At first glance, FVM and FEM are two highly specialized methods. However, both methods can solve problems of both solid mechanics and fluid mechanics well. Since experimental mechanics deals not only with solid state physics but also with fluid mechanics problems, we want to understand FVM in the sense of FEM in this work. In the long term, we want to use the variational calculus to unify many important numerical methods in engineering science into a common framework. In this way, we expect that experiences can be better exchanged between different engineering sciences and thus innovations in the field of experimental mechanics can be advanced. But in this work, we limit ourselves to the understanding of the FVM with the help of the variational calculus already known in FEM. We use a simple 1D Poisson equation to clarify the point. First, we briefly summarize the FVM and FEM. Then we will deal with the actual topic of this paper, as we establish the FEM and the FVM on a common basis by variation formulation. It is shown here that the FVM can be understood in terms of the finite element method with the so-called Galerkin-Petrov approach. T2 - 37th Danubia Adria Symposium on Advances in Experimental Mechanics CY - Linz, Austria DA - 21.09.2021 KW - Finite volume method KW - Finite element method KW - Variational calculation KW - Simulation KW - Computational physics PY - 2021 AN - OPUS4-53424 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - Aerial Chemical-Trail Detection and Localization N2 - This poster presentation presents first advances in the area of aerial chemical trail following. For that purpose, we equipped a palm-size aerial robot, based on the Crazyflie 2.0 quadrocopter, with a small lightweight metal oxide gas sensor for measuring evaporated ethanol from chemical trails. To detect and localize the chemical trail, a novel detection criterion was developed that uses only relative changes in the transient phase of the sensor response, making it more robust in its application. We tested our setup in first crossing-trail experiments showing that our flying ant robot is able to correlate an odor hit with the chemical trail within 0.14 m. Principally, this could enable aerial chemical trail following in the future. T2 - 37th Danubia - Adria Symposium on Advances in Experimental Mechanics CY - Linz, Austria DA - 21.09.2021 KW - Nano aerial robot KW - Trail following KW - Trail detection KW - Localization PY - 2021 AN - OPUS4-53411 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinhaeuser, Lorin T1 - EDC-WFD: A project to deliver reliable measurements of estrogens for better monitoring survey and risks assessments N2 - Monitoring programs should generate high-quality data on the concentrations of substances and other pollutants in the aquatic environment to enable reliable risk assessment. Furthermore, the need for comparability over space and time is critical for analysis of trends and evaluation of restoration of natural environment. Additionally, research work and exercises at the European level have highlighted that reliable measurements of estrogenic substances at the PNEC level are still challenging to achieve. The project EDC-WFD Metrology for monitoring endocrine disrupting compounds under the EU Water Framework Directive aims to develop traceable analytical methods for determining endocrine disrupting compounds and their effects, with a specific focus on three estrogens of the first watch list (17-beta-estradiol (17βE2), 17-alpha-ethinylestradiol (EE2), and estrone (E1)). Estrogens 17-alpha-estradiol (17αE2) and estriol (E3) will be included to demonstrate the reliability of the developed methods and to support the requirements of Directive 2013/39/EC, Directive 2009/90/EC and Commission Implementation Decision (EU) 2018/840, hence improving the comparability and compatibility of measurement results within Europe. During the EDC-WFD project four selected effect-based methods (EBM) will be deeply investigated in order to improve their rationale use and their support in water quality assessment. In particular, the EBM sensitivity, specificity and accuracy on reference materials with single or mixture solutions of the five substances at a concentration of EQS values will be explored. This project (18NMR01) has received funding from the EMPIR programme co-financed by the Participating States and from the European Union's Horizon 2020 research and innovation programme. T2 - 23rd JCF Frühjahrssymposium 2021 CY - Online meeting DA - 29.03.2021 KW - EDC PY - 2021 AN - OPUS4-52963 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ecke, Alexander T1 - An Immunosensor for Pharmaceutical Contaminants in Water Supply N2 - Contamination of drinking water with pharmaceuticals is an emerging problem and a potential health threat. Immunochemical methods based on the binding of the analyte to specific antibodies enable fast and cost-effective on-site analyses. Magnetic bead-based immunoassays allow for implementation into an immunosensor for online testing. These particles are prepared by either coupling the analyte molecule (diclofenac) or the respective antibody (amoxicillin) to the surface. For miniaturization, detection is performed electrochemically on a microfluidic chip. The developed immunosensor will enable detection of pharmaceuticals directly in water supply pipes. T2 - GDCh Wissenschaftsforum Chemie CY - Online meeting DA - 29.08.2021 KW - Immunosensor KW - Magnetic Beads KW - Diclofenac KW - Amoxicillin KW - Water Analysis PY - 2021 AN - OPUS4-53192 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Roesch, Philipp T1 - Investigation of PFAS Contaminated Solid Matrices by Combustion Ion Chromatography (CIC) - Development of EOF and AOF as Sum Parameters in Environmental Analysis N2 - Per- and polyfluoralkyl surfactants (PFAS) are industrially produced surface chemicals used in daily applications that have gained public and political attention due their unnaturally high appearance in drinking water, nourishments and soils.[1] Their chemical structures exhibit both lipophilic and hydrophilic properties, leading to a highly inert and persistent character.[2] Various PFAS have shown to be bioaccumulative in plants and animals, and some have been characterized as highly toxic when ingested.[3] When exposed to the environment, PFAS slowly get mobilized by natural water resources, leading to contamination of large areas of soil and natural water sources.[4] While PFAS contamination of drinking water has been investigated intensively, perfluoralkyl contamination of soils has been rarely examined as of yet. At the same time, an increasing amount of PFAS contamination sites are being discovered worldwide, calling for a sophisticated strategy towards analytical characterization.[5] Since the number of known PFAS already exceeds 4700, the established sum parameters like extractable organic fluorine (EOF) and adsorbable organic fluorine (AOF) are key elements to fully survey the impact of exposure.[6] Simultaneously, innovative soil remediation strategies are required to contain environmental destruction and to minimize further spreading of contaminants.[7] Addressing these challenges requires suitable analytical devices that are capable of mobilizing PFAS in the solid as well as in the liquid phase. The use of combustion ion chromatography (CIC) enables analysis of both immobile and volatile PFAS and allows the detection of both total fluorine (TF) and EOF or AOF of a given soil or aqueous sample. Based on preliminary results, the clean-up of a PFAS contaminated matrix is monitored via EOF detection over time. Additionally, we tested the effectiveness of urea (CH₄N₂O) as fluoride scavenger with the aim to improve the separation of inorganic and organic fluorine and therefore, to improve AOF accuracy. The presented findings can be contributive with regard to future AOF/EOF sum parameter development and application. T2 - Eurosoil 2021 CY - Online meeting DA - 23.08.2021 KW - PFAS KW - Sum parameter analyis KW - Combustion ion chromatography PY - 2021 AN - OPUS4-53195 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Sandra F. T1 - Flame Retardant Properties of Kenaf Fibre-reinforced Bio Epoxy Composites N2 - A commercially available bio epoxy resin with kenaf fibers and halogen free inorganic and organic flame retardants, respectively, is investigated concerning its thermal stability and fire performance. Particular attention has been paid to the difference of short fibers, fiber mats and woven materials. T2 - 18th European Meeting on Fire Retardant Polymeric Materials, FRPM21 CY - Budapest, Hungary DA - 29.08.2021 KW - Bio-composite KW - Thermoset KW - Phosphorus flire retardant KW - Kenaf PY - 2021 AN - OPUS4-53201 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sánchez-Olivares, Guadalupe T1 - Imparting Intumescent Flame Retardancy During the Tanning of Leather N2 - FR additives were incorporated during tanning process. The mode of action of an intumescent system and each component individually, was methodically investigated in a semi-finished leather. Vertical flammability test results showed that the investigated semi-finished leather satisfies the regulations of the Federal Aviation Administration; in addition, afterglow time is strong minimized and forced fire behavior pointed out an important reduction on smoke production. T2 - 18th European Meeting on Fire Retardant Polymeric Materials, FRPM21 CY - Budapest, Hungary DA - 29.08.2021 KW - Leather KW - Fire retardant KW - Intumescence KW - Smoke PY - 2021 AN - OPUS4-53203 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hupp, Vitus T1 - Adhesive Tapes in Construction and Passenger Transport - Blessing of Curse in Fires? N2 - The influence of pressure sensitive adhesive (PSA) tapes as adhesive layers on the burning behaviour of bonded materials has been investigated. Single-sided tapes as an outer connection between construction materials have large influence on flammability, flame spread and fire resistance. In contrast, double sided tapes only take a small impact on the flammability but can drasticly change the burning behaviour in developing fires. T2 - 18th European Meeting on Fire Retardant Polymeric Materials, FRPM21 CY - Budapest, Hungary DA - 29.08.2021 KW - Adhesive KW - Fire Retardant KW - Pressure sensitive adhesive (PSA) KW - Flammability PY - 2021 AN - OPUS4-53204 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Battig, Alexander T1 - Waste not, Want not: Leather Industrial Waste as a Fire Retardant Adjuvant in EVA N2 - An interesting fire retardant behavior of leather wastes collected from local tannery industry was observed in a detailed study on morphological, pyrolysis, forced combustion, flammability, mechanical and rheological properties. T2 - 18th European Meeting on Fire Retardant Polymeric Materials, FRPM21 CY - Budapest, Hungary DA - 29.08.2021 KW - Leather KW - Industrial waste KW - Circular economy KW - Bio-filler KW - Sustainability KW - Ethylene vinyl acetate PY - 2021 AN - OPUS4-53205 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Korwitz, A. T1 - Flame retardant polyesters with DOPO building blocks N2 - Polyesters with DOPO substituents can be successfully synthesized with 10-[2,5-Bis(2-hydroxyethoxy)phenyl]-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide(DOPO-HQ-glycolether) and DOPO-substituted dimethyl succinate (PIta). These polyester materials show an effective flame retardancy which can be fine-tuned by the chemical structure of the polyester backbone. T2 - 18th European Meeting on Fire Retardant Polymeric Materials, FRPM21 CY - Budapest, Hungary DA - 29.08.2021 KW - DOPO KW - Polyester KW - Fire retardant PY - 2021 AN - OPUS4-53206 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wosniok, Aleksander T1 - Distributed fiber optic radiation sensors N2 - In this work, we present our results achieved in several research activities for development of fiber optic dosimeters. The findings show that both the measurement of the radiation-induced attenuation (RIA) along the entire sensing fiber and the accom panying change in the refractive index of the fiber core can be used for distributed radiation monitoring in the kGy and MGy range, respectively. Depending on the fiber type and material the RIA shows varying response to dose rates, environmental temperatures and the wavelength of the laser source used. T2 - safeND CY - Online meeting DA - 10.11.2021 KW - Distributed sensing KW - Fiber optic radiation sensor KW - Radiation sensing fibers KW - Radiation-induced attenuation PY - 2021 AN - OPUS4-53752 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Werner, Tiago T1 - Comparison of the fatigue behavior of wrought and additively manufactured AISI 316L N2 - Additively Manufactured (AM) parts are still far from being used in safety-relevant applications, mainly due to a lack of understanding of the feedstock-process-propertiesperformance relationship. This work aims at providing a characterization of the fatigue behavior of the additively manufactured AISI 316L austenitic stainless steel and a direct comparison with the fatigue performance of the wrought steel. A set of specimens has been produced by laser powder bed fusion (L-PBF) and a second set of specimens has been machined out of hot-rolled plates. The L-PBF material shows a higher fatigue limit and better finite life performance compared to the wrought material, accompanied by an extensive amount of cyclic softening. T2 - Fatigue Design 2021 CY - Online meeting DA - 17.11.2021 KW - Additive Manufacturing KW - AM KW - 316L KW - Fatigue KW - High Cycle Fatigue KW - Low Cycle Fatigue PY - 2021 AN - OPUS4-53780 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kanzler, D. T1 - Prüf‘ ich noch – oder mess‘ ich schon? Ein Konzept für die Prüfunsicherheitsbestimmung von zerstörungsfreien Prüfsystemen N2 - Häufig stellt sich die Frage, ob eine Materialinhomogenität kritisch für die strukturelle Integrität eines Bauteils ist. Dies ist häufig abhängig von der Größe und der Geometrie dieser Materialinhomogenität. Während die korrekte Bestimmung einer Defektgröße zweifelsfrei eine Messaufgabe darstellt, ist die Detektion eines Materialdefekts die Hauptaufgabe eines Prüfsystems. Allerdings sind manche Defekte zu klein, um detektiert zu werden. Es ist jedoch schwierig, etwas zu bemessen, was nur schwer gefunden werden kann, stellen sowohl die Detektion als auch die Fähigkeit den Defekt zu bemaßen, Teile der der Bewertung eines Prüfsystems dar. Die vorliegende Publikation beschäftigt sich zum einen mit der Notwendigkeit, die Auffindwahrscheinlichkeit von Prüfverfahren zu bewerten, und zum anderen mit den Schritten, mit denen das Konzept der Prüfunsicherheitsbewertung national und international vorangetrieben wird. Final werden die Methoden evaluiert, die den Schulterschluss zwischen Prüf- und Messunsicherheitsbestimmung ermöglichen. Ergänzt wird der Artikel mit Beispielen aus der Industrie, welche die aktuelle Relevanz des Themas untermauern. T2 - 10. VDI-Fachtagung Messunsicherheit praxisgerecht bestimmen – Prüfprozesse in der industriellen Praxis 2021 - Der Weg zum sicheren Messen und Prüfen CY - Erfurt, Germany DA - 10.11.2021 KW - Zerstörungsfreie Prüfung KW - Zuverlässigkeit KW - Human Factors KW - Probability of detection PY - 2021 AN - OPUS4-54248 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Cakir, Cafer Tufan T1 - Unravelling the depths of complex alloys with grazing exit XANES N2 - High entropy alloys (HEAs) are considered as a new class of alloys containing at least 5 elements with concentrations between 5 and 35 atomic percent. There has been a growing interest in HEAs in the material research field in recent years. Due to their adjustable composition, which enables the modifications of mechanical properties (such as hardness, strength and ductility etc) and their stability at high temperatures, HEAs have been the focus of various studies. Especially the corrosion behavior of HEAs has been a wide research interest. Since the grazing exit X-ray fluorescence (GEXRF) offers a non-destructive way to collect notable information regarding the high temperature oxidation, we consider it as a useful method to investigate how HEAs behave in corrosive environments. The main idea of grazing geometry is to enhance the fluorescence signal of the surface. This enables highly sensitive surface analyses of thin protective film on surface in sub-micrometer scale. Position-sensitive area detectors provide information regarding the signal emitted from the sample as a function of emission angle and thus allow depth-sensitive analysis. Furthermore, the data collected from samples of an incidence energy which lays within a specific energy range provides XANES data to determine oxidation states. Moreover, since GEXRF profiles can also be simulated through physical models (Urbach 1999), they enable us to determine the layer thickness of a given sample in a non-destructive way. In this contribution, we present the preliminary results of a conceptual study regarding layer properties of CrCoNi medium entropy alloy. The successful implementation of such methodological concept will pave the way for the investigation of more complex alloys with multiple layers, which is planned for the later phases of the project. T2 - Denver X-Ray Conference DXC 2021 CY - Online meeting DA - 02.08.2021 KW - GEXRF KW - High entropy alloys KW - XANES KW - Grazing exit KW - XAS PY - 2021 AN - OPUS4-54027 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schumacher, David T1 - NanoXSpot: Brennfleckvermessung im µm- und nm-Bereich N2 - Im Rahmen des EMPIR-Projektes NanoXSpot (Nanometre X-Ray Focal Spot Measurement) werden rückführbare Messverfahren zur Bestimmung der Brennfleckgröße und -form von Röntgenröhren mit Submikrometerauflösung (100 nm – 20 µm) entwickelt, die die Grundlage für die Erarbeitung eines Standardentwurfes bilden. Der Standardentwurf wird bei CEN TC 138 (Non-destructive testing) WG 1 (Radiographic testing) eingereicht und mit ISO und ASTM harmonisiert. Zur Untersuchung der entwickelten Methoden (Brennfleck-CT, Fit-Prozedur für Strichgruppenkörper) und des im Projekt NanoXSpot neu entworfenen Testkörpers, NxS, wurde ein Ringversuch durchgeführt. Dabei wurde sowohl der angestrebte Überlappungsbereich mit EN 12543 Teil 5 (Messung der effektiven Brennfleckgröße von Mini- und Mikrofokus-Röntgenröhren) und ASTM E 2903 (Standard Test Method for Measurement of the Effective Focal Spot Size of Mini and Micro Focus X-ray Tubes) für Brennflecke >5 µm als auch Brennflecke <5 µm untersucht. Im Mittelpunkt standen dabei Stabilität und Wiederholbarkeit der entwickelten Methoden zur Bestimmung der Brennfleckgröße. In diesem Beitrag werden die Ergebnisse des durchgeführten Ringversuches vorgestellt und diskutiert, um Schlussfolgerungen und Empfehlungen für die Vorbereitung eines erweiterten Ringversuchs mit Partnern und Stakeholdern abzuleiten. T2 - DGZfP Jahrestagung CY - Kassel, Germany DA - 23.05.2022 KW - Brennfleckvermessung KW - Focal spot measurement KW - Gauge design KW - EMPIR KW - Computer Tomographie KW - Standardization PY - 2022 UR - https://jahrestagung.dgzfp.de/Portals/jt2022/bb/P10.pdf AN - OPUS4-54986 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hufschläger, Daniel A1 - Gaal, Mate A1 - Gohlke, Dirk A1 - Weise, Matthias A1 - Szewieczek, A. A1 - Hillger, W. A1 - Ilse, D. T1 - Array-Prüfköpfe für luftgekoppelte Ultraschallprüfung N2 - Seit Jahren stellt die luftgekoppelte Ultraschallprüfung eine etablierte Alternative zur konventionellen Prüfung von Leichtbaukomponenten aus den Bereichen Luft- und Raumfahrt sowie Automotive dar. Im Gegenteil zur flüssigkeitsgekoppelten Prüfung in Kontakt oder im Tauchbecken ist sie weniger invasiv und bietet daher zeitliche und finanzielle Anreize. Normalerweise wird die luftgekoppelte Prüfung mit Einzelelementschwingern in Durchschallung realisiert, wohingegen die Gruppenstrahlertechnik bereits Industriestandard im Bereich der Kontakttechnik darstellt. Die damit verbundenen Vorteile wie die aktive Fokussierung oder, die gezielte Manipulation des Einschallwinkels zur Anregung von geführten Wellen, finden im Bereich der luftgekoppelten Prüfung dabei noch wenig Anwendung. Im Rahmen dieses Beitrags stellen wir die ersten Zwischenergebnisse des geförderten Projektes „PALUP – Phased- Array-Technik für Luftultraschall-Prüfungen“ vor. Ziel des Projektes ist die Entwicklung von Mehrelementschwingern auf Basis von zellulären Kunststoffen, die Entwicklung einer dedizierten Pulserstufe im Kilovoltbereich, sowie die nötige rauscharme messtechnische Auswertung jedes Einzelelements. T2 - DGZfP Jahrestagung CY - Kassel, Germany DA - 23.05.2022 KW - Phased array KW - Air-coupled ultrasound PY - 2022 AN - OPUS4-54996 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hufschläger, Daniel A1 - Gaal, Mate A1 - Ahmadzadeh, M. T1 - Simulation und Vermessung von thermoakustischen Schallquellen N2 - Zur Simulation des Schallfeldes von beliebig geformten konventionellen Schallquellen existieren viele Ansätze (EFIT, GPSS). Sie alle basieren auf der Annahme eines monochromatischen akustischen Signals, was meist eine gültige Annäherung darstellt. Allerdings sind bei thermoakustischen Quellen aufgrund ihrer Funktionsweise und der hohen Bandbreite viele der existierenden Ansätze nicht direkt anwendbar und können Beobachtungen bei der Vermessung von thermoakustischen Wandlern nicht vollständig abbilden und erklären. In diesem Beitrag wurde die bekannte Methode der generalisierten Punktquellensynthese (GPSS) für die Berechnung von Schallfeldern von thermoakustischen Schallquellen angewendet. Dabei gehen zahlreiche Parameter wie die Dicke und Geometrie der leitfähigen Schicht, Krümmung des Substrats, sowie die Signalform der Anregung in die Simulation ein. Neu an dem präsentierten Ansatz ist die Abweichung von der üblichen monochromatischen Annäherung und die Berücksichtigung der großen Bandbreite von thermoakustischen Wandlern. Für die Validierung der Simulationen wurden Schallfelder von Quellen mit bekannter Anregung und Geometrie breitbandig durch ein optisches Mikrofon vermessen. T2 - DGZfP Jahrestagung CY - Kassel, Germany DA - 23.05.2022 KW - Thermoacoustics KW - Sensor characterization PY - 2022 AN - OPUS4-54997 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pech May, Nelson Wilbur T1 - Photothermal characterization of polyester composites loaded with parallelly arranged graphite rods N2 - One of the biggest challenges in the measurement of thermal properties is to measure inhomogeneous materials This work focuses on measuring the thermal properties of cylindrical polyester resin composite materials loaded with graphite rods oriented in the direction of the resin thickness, varying the graphite concentrations starting from zero to 8 75 of volumetric fraction and changing the distribution of graphite rods inside the polyester matrix. T2 - International Conference in Photoacoustics and Photothermal Phenomena (ICPPP21) CY - Bled, Slovenia DA - 19.06.2022 KW - Heat diffusion KW - Heterogeneous materials PY - 2022 AN - OPUS4-55384 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Dirk A1 - Ruwe, L. T1 - Experimental study on the performance of the standardized test method for detonation flame arresters N2 - Flame arresters are autonomous protection systems and are among the constructive explosion protection measures that limit the effects of an explosion. In this study, the performance of the standardized test method regulated in the DIN EN ISO 16852 standard for in-line flame arresters for stable and unstable detonations, which is mainly designed for atmospheric conditions, is examined. In an interlaboratory comparison, experiments are performed for different pressures before ignition and explosion groups according to the standardized test method. The experimental data is analyzed in detail to further optimize the test method and to thus achieve an improved reproducibility of detonation tests at high pressures, especially regarding the deflagration to detonation transition. Based on these results, an improved test method for detonation flame arresters will be developed, which will ensure better reproducibility as well as applicability under non-atmospheric conditions. T2 - 28th ICDERS 2022 CY - Naples, Italy DA - 19.06.2022 KW - Flame arrester KW - Explosion protection KW - Experimental tests PY - 2022 AN - OPUS4-55101 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liao, Chun-Man T1 - Passive and active bridge monitoring N2 - This research is to perform passive and active measurements on a large-scale prestressed concrete bridge model under the outdoor condition. Multi sensors were applied to this test structure – BLEIB, which is located at the BAM test site. The experimental evaluation of ultrasonic wave propagation and seismic noise recordings were considered for revealing the bridge damage condition, as a basic for developing a reliable bridge monitoring system. T2 - DGZfP-Jahrestagung 2022 CY - Kassel, Germany DA - 23.05.2022 KW - Bridge monitoring PY - 2022 AN - OPUS4-54918 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Even, Morgane T1 - Development of a procedure for the analysis of the emissions of VVOCs N2 - Several aspects were explored towards the standardization of a suitable procedure. The use of gaseous standards is necessary and a standard gas mixture containing 60 substances was successfully generated and employed for further investigations. The suitability of different chromatography columns was addressed: The use of PLOT (Porous Layer Open Tubular) columns is well suitable for VVOC analysis. The recoveries of the 60 analytes on several adsorbents and their combinations were determined: A combination of a graphitized carbon black and a carbon molecular sieve showed great results for all analytes. Carbon molecular sieves adsorb water which can impair the analysis. Different options such as purging, the use of a drying system or splitting were investigated for water removal. This contribution will present experimental results supporting the standardization of a method for VVOC analysis. T2 - Indoor Air conference CY - Kuopio, Finland DA - 12.06.2022 KW - Analytical method KW - EN 16516 KW - ISO 16000-6 KW - VVOCs PY - 2022 AN - OPUS4-55282 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Karafiludis, Stephanos T1 - Trash to treasure: recovery of transition metal phosphates for (electro-)catalytical applications N2 - Wastewaters containing high concentrations of NH4+, PO43- and transition metals are environmentally harmful and toxic pollutants. At the same time phosphorous and transition metals constitute valuable resources. Here, we report the synthesis routes for Co- and Ni-struvites (NH4MPO4∙6H2O, M = Ni2+, Co2+) out of aqueous solutions resembling synthetic/industrial waste water compositions, and allowing for P, ammonia and metal co-precipitation. Furthermore, the as-obtained struvites were further up-cycled. When heated, these transition metal phosphates (TMPs) demonstrate significant changes in the degree of crystallinity/coordination environment involving a high amount of amorphous phases and importantly develop mesoporosity (Figure 1). In this regard, amorphous and mesoporous TMPs are known to be highly promising (electro-)catalysts. Amorphous phases do not represent a simple “disordered” crystal but more a complex system with a broad range of compositions and physicochemical properties, which remain mostly unknown. Consequently, we investigated the recrystallization and amorphization process during thermal treatment and a resolved the complex amorphous/crystalline structures (Figure 2). As a proof-of-principle for their applicational use, the as-obtained TMPs demonstrate significant proton conductivity properties similar to apatite-like structures from room to high temperatures (>800°C). Hence, we have developed a promising recycling route in which environmental harmful contaminants like PO43-, NH4+ and 3d metals would be extracted out of waste waters in the form of precursor raw materials. These raw materials can be then further up-cycled through a simple thermal treatment for their specific application in electrocatalysis. T2 - Goldschmidt Conference 2022 CY - Hawai'i, USA DA - 10.07.2022 KW - Mesoporosity KW - Amorphous phases KW - Transition metals KW - Struvite KW - Phosphates PY - 2022 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-552852 UR - https://conf.goldschmidt.info/goldschmidt/2022/meetingapp.cgi/Paper/9501 AN - OPUS4-55285 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohrer, Christian T1 - Fachbereich 2.5 Konformitätsbewertung Explosivstoffe/Pyrotechnik N2 - Vorstellung der Kernaufgaben Konformitätsbewertung Explosivstoffe und pyrotechnische Gegenstände und Hauptaktiviäten in diesem Sektor T2 - 42. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 15.10.2021 KW - Explosivstoffe KW - Pyrotechnik KW - Normung KW - Konformitötsbewertung KW - Politikberatung PY - 2021 AN - OPUS4-54396 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ecke, Alexander T1 - An Immunosensor for Pharmaceutical Contaminants in Water Supply N2 - Contamination of drinking water with pharmaceuticals is an emerging problem and a potential health threat. Immunochemical methods based on the binding of the analyte to specific antibodies enable fast & cost-effective on-site analyses. Magnetic bead-based immunoassays (MBBAs) allow for implementation into an immunosensor for online testing. Particles are prepared by either coupling the analyte molecule (diclofenac) or the respective antibody (amoxicillin) to the surface. For miniaturization, detection is performed electrochemically (chronoamperometry) on a microfluidic chip. The developed immunosensor will enable detection of pharmaceuticals directly in water supply pipes. T2 - 11th SETAC Young Environmental Scientists Meeting CY - Online meeting DA - 07.03.2022 KW - Immunosensor KW - Magnetic Beads KW - Water Analysis KW - Electrochemistry KW - Microfluidics PY - 2022 AN - OPUS4-54432 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Feldkamp, Martin A1 - Quercetti, Thomas A1 - Gleim, Tobias T1 - Temperature and Heat Flux Measurements in Fire Testing N2 - Packages for the transport of Spent Nuclear Fuel and high active radioactive waste are designed to withstand severe accidents. Specific mechanical and thermal tests are defined in the IAEA Regulations for the Safe Transport of Radioactive Materials in order to cover these hypothetical severe accidents. The thermal test mainly consists of a 30 minute fully engulfing fire. Components such as the package impact limiters can lead to supplementary energy release during the thermal test as they might continue burning after the fire phase. Local heat flux into the package can occur. Measurement of heat flux into the package is of importance to evaluate component temperatures and review their acceptance. The usability of heat flux sensors and temperature measurement equipment has to be tested to apply them in impact limiter fire testing. Further questions arise such as :“Is the infrared camera a useful tool to determine heat flux at the boundary surface?” T2 - Technical Exchange IRSN – BAM Transport & Storage of Packages for Radioactive Material CY - Berlin, Germany DA - 08.09.2021 KW - Heat flux sensor PY - 2021 AN - OPUS4-55659 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brandt, S. T1 - Odour Emissions from Building Products Simplifying the Evaluation of Perceived Intensity N2 - One criterion to evaluate the odour of a sample is perceived intensity П which is evaluated with the aid of a comparative scale. The procedure is well accepted but also time consuming and extensive. The study should help simplify the testing procedure by asking the panel members to only indicate whether a sample is perceived as less to equally intense or of greater intensity in comparison to a given acetone concentration of 7 pi on the comparative scale. In Germany a value of 7 pi is required for products to be suitable for the indoor use. The results show that the simplified test is basically suitable. T2 - Indoor Air Conference 2022 “Healthy people in healthy indoor environment” CY - Kuopio, Finland DA - 12.06.2022 KW - Perceived Intensity KW - Emissions KW - Chamber test KW - Odour KW - VOC KW - Building product PY - 2022 AN - OPUS4-55623 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zekhnini, Khalid T1 - Corrosion testing in a laboratory container: Corrosion testing with artificial seawater and sediment N2 - Electricity generation by offshore wind turbine generators (WTG) is an important pillar of the energy transition. Corrosion processes on WTGs pose a particular challenge with regard to safe operation over longer periods of time due to the highly corrosive conditions in the offshore area. BAM is therefore conducting research to ensure a safe operation of the turbines over their intended service life to protect people and the environment. In a joint research project, different corrosion-relevant areas of a WTG foundation structure were specifically simulated in test basins within a laboratory container. The aim of the work was, on the one hand, the gravimetric and electrochemical determination of corrosion rates in the different areas of an WTG that are relevant for cathodic corrosion protection (CCP): Underwater and sediment zone as well as the transition area between these two zones. Also, targeted tests were carried out under CCP. In addition, investigations regarding calcareous deposition during CCP were carried out on idealized specimens under laboratory conditions to better assess its influence on the protection process. The investigations were carried out in a laboratory container with different basins, which were filled with sand as sediment and artificial seawater according to ISO 15711and connected via a closed water circuit. The poster at EURCORR 2022 provides an overview of the investigations and the most important results. It will be evaluated, if a simulation of offshore corrosion conditions is possible to a certain extent in an idealized system with artificial seawater and sediment. T2 - EUROCORR 2022 CY - Berlin, Germany DA - 28.08.2022 KW - Corrosion KW - Corrosion Testing KW - Artificial Sea Water KW - Laboratory Container PY - 2022 AN - OPUS4-55664 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kazlagić, Anera A1 - Vogl, Jochen T1 - Investigating the differences in 87Sr/ 86Sr isotope ratio measurements between MC-ICP-MS and MC-TIMS in cement RMs N2 - Thirteen laboratories participated in an international interlaboratory comparison for the determination of 87Sr/86Sr isotope ratios in four cement reference materials (RM) using the conventional method for 87Sr/86Sr isotope ratios analyses. Sample dissolution and Sr isolation via ion exchange chromatography were required since the cement samples were distributed as powders. Analytical preparation included the use of various digestion methods including mixed mineral acids, microwave/acid, bomb/acid digestion or borate fusion, followed by Sr separation using ion exchange chromatography. In this study, we evaluated whether any statistically significant differences were attributable to instrumental differences (i.e., MC-ICP-MS and MC-TIMS), or to laboratory-specific techniques (different sample preparation techniques, Sr isolation and the procedures for correcting the data outputs). To evaluate these effects, consensus values for cement RMs and associated standard uncertainties were estimated by fitting a linear, Gaussian mixed effects model using the R function “lmer” defined in package “lme4”. No statistically significant effects (SSE) attributable to instrumental differences regardless of whether the materials are considered together or separately were evident. There were SSE attributable to differences between laboratories for three cement RMs when the individual cements were considered separately. Since consideration or disregard for such differences does not induce significant changes in the estimate of the consensus values for the 87Sr/86Sr isotope ratios in cement RMs, these effects can safely be neglected when calculating the best estimates for the true values of 87Sr/86Sr isotope ratios in these RMs. T2 - ICP-MS Anwender*innentreffen 2022 CY - Leoben, Austria DA - 05.09.2022 KW - Conventional isotope ratio KW - Reference material KW - Metrology KW - Traceability KW - Uncertainty PY - 2022 AN - OPUS4-55682 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Valet, Svenja T1 - Determination of the corrosion product layer resistance on zinc samples by using gel electrolytes N2 - Crash barriers, railings, lamp posts, waste glass containers - these are just a few of the many examples of galvanized surfaces. They withstand wind and weather for decades, which is possible thanks to a protective layer made of corrosion products. When designing the atmospheric durability of galvanized components, a linear corrosion loss is assumed. In the past 30 years, however, the surrounding atmosphere has changed a lot. Due to the restriction of sulfur exhaust air, acid rain completely disappeared in Europe and Germany, which has a direct influence on the type and protective effect of the corrosion products. Under the influence of current atmospheric conditions, zinc layers are significantly more resistant and no longer show any linear corrosion loss. The established test methods cannot correctly map this change in neither short-term nor long-term tests and thus provide incorrect results. In order to solve this problem, a new measurement method was developed at BAM that can assess the protective effect of the formed surface layers in a minimally invasive manner without damaging the sample and in short test times. For this new method, gel electrolytes are used and the so-called corrosion product layer resistance RL, which is made up of various surface resistances, is measured electrochemically. As a single measurement, the surface layer resistance can provide information about the existing corrosion protection, while time-dependent measurements assess the stability of the layer. Thus, it is possible again to evaluate the corrosion protection layer. Furthermore, this method can also be used for field measurements on real components. T2 - EUROCORR 2022 CY - Berlin, Germany DA - 28.08.2022 KW - Corrosion KW - Corrosion Testing KW - Gel electrolytes KW - Zinc and galvanized samples KW - Corrosion product layer PY - 2022 AN - OPUS4-55688 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Shaheen, Sabahat T1 - Measurement of Geometric Phase using a φ-OTDR setup N2 - Geometric phase showing sensitivity to changes in polarisation state (SOP) and intensity of backscattered light is measured using a novel φ-OTDR setup based on coherent heterodyne detection. Principle is demonstrated using a polarisation scrambler inline a fiber-under-test. T2 - 27th Optical Fiber Sensors conference CY - Alexandria, United States DA - 29.08.2022 KW - Coherent Heterodyne KW - Geometric Phase KW - Distributed Fiber Optic Sensor PY - 2022 AN - OPUS4-55710 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völker, Tobias T1 - Application of LIBS to identify construction and demolition waste for circular economy N2 - Responsible treatment of the environment and resources is a key element of sustainability. The building and construction industry is one of the largest consumers of natural resources. Consequently, there is a particular need for regulations and technologies that help to create closed material cycles. From the technological point of view, such efforts are complicated by the growing material diversity and the amount of composites contained in present and future construction and demolition waste (CDW). Nowadays, simple but proven techniques like manual sorting are mainly used. However, this practice not only poses health risks and dangers to the staff performing the work, but also relies on merely obvious, visually striking differences. Automated, sensor-based sorting of these building materials could complement or replace this practice to improve processing speed, recycling rates, sorting quality, and prevailing health conditions. The preliminary results for the identification of a wide variety of building materials with LIBS are presented. T2 - XII Laser Induced Breakdown Spectroscopy (LIBS 2022) CY - Bari, Italy DA - 04.09.2022 KW - LIBS KW - Construction and demolition waste KW - Circular economy PY - 2022 AN - OPUS4-55679 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fürst, Richard A1 - Häßler, Dustin A1 - Hothan, Sascha T1 - Brandversuch eines Stahlzuggliedes mit reaktivem Brandschutzsystem N2 - Das Poster stellt den im Rahmen des Workshops "Feuerwiderstand von Stahlzuggliedern mit reaktiver Brandschutzbeschichtung" durchgeführten Brandversuch vor. T2 - Workshop - Feuerwiderstand von Stahlzuggliedern mit reaktiver Brandschutzbeschichtung CY - Berlin, Germany DA - 06.09.2022 KW - Brandschutz KW - Brandversuch KW - Feuerwiderstand KW - Reaktives Brandschutzsystem PY - 2022 AN - OPUS4-55699 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönauer-Kamin, Daniela T1 - Powder-Aerosol deposited (PAD) calcium manganate as n-type thermoelectric material N2 - Currently, calcium manganate CaMnO3 and calcium cobaltite Ca3Co4O9 are being investigated as n-type resp. p-type semiconducting materials as oxidation- and temperature-resistant thermoelectric materials for oxide multilayer thermoelectric generators (TEGs). In order to manufacture multilayer TEGs, pressure-assisted sintering processes at high temperatures are necessary to achieve optimal thermoelectric material properties. To realize TEGs in planar film technology, another method to obtain dense ceramic layers directly from the synthesized starting powders without a subsequent high temperature step is emerging recently: the powder aerosol deposition (PAD) method. In the present work, it is investigated whether PAD is suitable to produce dense ceramic films from Sm-doped CaMnO3 and Ca3Co4O9 powders. The resulting thermoelectric properties are characterized as a function of temperature. CaMnO3 powder could successfully be processed by PAD with resulting layer thicknesses of 5- 6 µm without any high-temperature sintering steps of the films. The electrical conductivity and the Seebeck coefficient of the films were determined in-plane from room temperature to 600 °C in air. The results show a Seebeck coefficient of around -200 µV/K, which is comparable to results of pressed and sintered bars. At 400 °C, the electrical conductivity corresponds to the conductivity of the bar. At higher temperatures the conductivity is better than with the reference. Below 400°C, the electrical conductivity is somewhat lower than that of the reference sample, a mild thermal treatment of the PAD layer improves it. It is expected that the thermal conductivity of the PAD film will be lower compared to the bars due to the nano-crystalline film morphology. This should result in a significantly increased ZT value for the PAD layers and a higher efficiency of the TEG. The work shows that both CaMnO3 and Ca3Co4O9 can be successfully processed by PAD, and the PAD films show comparable thermoelectric properties. T2 - 18th European Conference on Thermoelectrics CY - Barcelona, Spanien DA - 14.09.2022 KW - Film depositition KW - Calcium cobaltite PY - 2022 AN - OPUS4-55771 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ziegler, Mathias T1 - Thermographic super resolution reconstruction using 2D pseudo-random pattern illumination N2 - Thermographic non-destructive testing is based on the interaction of thermal waves with inhomogeneities. The propagation of thermal waves from the heat source to the inhomogeneity and to the detection surface according to the thermal diffusion equation leads to the fact that two closely spaced defects can be incorrectly detected as one defect in the measured thermogram. In order to break this spatial resolution limit (super resolution), the combination of spatially structured heating and numerical methods of compressed sensing can be used. The improvement of the spatial resolution for defect detection then depends in the classical sense directly on the number of measurements. Current practical implementations of this super resolution detection still suffer from long measurement times, since not only the achievable resolution depends on performing multiple measurements, but due to the use of single spot laser sources or laser arrays with low pixel count, also the scanning process itself is quite slow. With the application of most recent high-power digital micromirror device (DMD) based laser projector technology this issue can now be overcome. T2 - ICPPP21: International Conference on Photoacoustic and Photothermal Phenomena CY - Bled, Slovenia DA - 19.06.2022 KW - Thermography KW - Super resolution KW - NDT KW - Inspection KW - Internal defects KW - DMD KW - DLP PY - 2022 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-551224 UR - https://indico.ung.si/event/5/contributions/237/ AN - OPUS4-55122 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Fabian T1 - A fast and simple PFAS extraction method for soil sample analysis using HR-CS-GFMAS N2 - Per- and polyfluorinated alkyl substances (PFASs) are a substance class of over 4730 individual compounds. Several PFASs are extremely persistent, bioaccumulative and toxic. The analysis of PFASs is challenging because of their different chemical and physical properties as well as the high number of target substances. Target-based approaches (e.g., LC-MS/MS) are limited to the availability of analytical grade standards and are not suitable for the analysis of new/unknown PFASs and transformation products. Therefore, PFAS sum parameter methods become increasingly important to indicate a realistic PFAS pollution level. PFAS sum parameters compromise the proportion of organically bound fluorine that can either be extracted (EOF) or adsorbed to activated carbon (AOF). For the instrumental analysis of such sum parameters, a fluorine selective detector is needed. High resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS) is a sensitive and highly selective tool for indirect fluorine determination. The method is based on the in situ formation of diatomic gallium-mono fluoride (GaF) in a graphite furnace at a temperature of 1550°C. The molecular absorption of GaF can be detected at its most sensitive wavelength at 211.248 nm providing limits of quantification of c(F) 2.7 µg/L. Here, we describe a fast and simple extraction method for the determination of the EOF using HR-CS-GFMAS in soil samples. Common approaches for the EOF determination use solid phase extraction (SPE). To omit the bias of this time consuming and expensive step we optimized a fast and simple SPE-free extraction method. The developed extraction method consists of a liquid-solid extraction using acidified methanol. Comparison of the method with and without an SPE clean-up step revealed a drastic underestimation of EOF concentrations using SPE. In the next step, the applicability of our method was tested for other solid matrices. In view of steadily increasing numbers of PFASs, our method will make an important contribution in assessing the pollution situation as well as support policy makers in deriving exposure limits for PFASs in the future. T2 - Analytica conference CY - München, Germany DA - 21.06.2022 KW - PFAS KW - HR-CS-GFMAS KW - Soil KW - Fluorine KW - SPE PY - 2022 AN - OPUS4-55124 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf T1 - Chemical characterization of ultra-fine particles released from laser printers N2 - 11 laser printers from 5 manufacturers were purchased in 2017 and tested for their UFP emissions. Size resolved sampling of the emitted particles was done with a 13 stage (30 nm to 10 µm) low pressure cascade impactor. The sampled particles were analysed for their chemical composition by thermal extraction (vaporization at 290°C) followed by GC-MS analysis. High boiling cyclic siloxanes (D10 to D16) were detected as constituents of UFP from laser printers. In comparison to measurements in 2008, aliphatic long-chain alkanes (C22 to C34) were detected additionally as chemical constituents of UFP from most of the tested printers and their amounts were higher than for cyclic siloxanes. Printers of one manufacturer showed very low UPF emissions compared to the other manufacturers. T2 - Indoor Air Conference 2022 CY - Kuopio, Finland DA - 12.06.2022 KW - UFP KW - Thermal extraction KW - Cascade impactor PY - 2022 AN - OPUS4-55107 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ecke, Alexander T1 - An Immunosensor for Pharmaceutical Contaminants in Drinking Water N2 - Contamination of drinking water with pharmaceuticals is an emerging problem and a potential health threat. Immunochemical methods based on the binding of the analyte to specific antibodies enable fast & cost-effective on-site analyses. Magnetic bead-based immunoassays (MBBAs) allow for implementation into an immunosensor for online testing. Particles are prepared by either coupling the analyte molecule (diclofenac) or the respective antibody (amoxicillin) to the surface. For miniaturization, detection is performed electrochemically (chronoamperometry) on a microfluidic chip. The developed immunosensor will enable detection of pharmaceuticals directly in water supply pipes. T2 - JCF Frühjahrssymposium 2022 CY - Hannover, Germany DA - 23.03.2022 KW - Immunosensor KW - Electrochemistry KW - Amoxicillin KW - Diclofenac KW - Magnetic Beads PY - 2022 AN - OPUS4-54627 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grunert, Wiebke T1 - Odysseus - preventing, countering, and investigating terrorist attacks through prognostic, detection, and forensic mechanisms for explosive precursors N2 - Die Bekämpfung des Terrorismus erfordert ein ganzes Arsenal an Instrumenten. Unter anderem ist das Wissen über die Ausgangsstoffe für Explosivstoffe – chemische Substanzen, die für legale Zwecke verwendet, aber auch für die illegale Herstellung selbstgemachter Sprengstoffe missbraucht werden können – von entscheidender Bedeutung. In diesem Zusammenhang wird das EU-finanzierte Projekt ODYSSEUS effektive und effiziente prognostische, nachweisende und forensische Instrumente entwickeln, um die Prävention, Bekämpfung und Untersuchung von Terroranschlägen mit selbstgebauten Sprengstoffen zu verbessern. Die gewonnenen Erkenntnisse sollen zur Erarbeitung von Instrumenten zur Überwachung der chemischen Lieferkette und zur Erkennung von Ausgangsstoffen für Explosivstoffe in (nahezu) Echtzeit beitragen. Die Instrumente werden in drei Anwendungsfällen praktisch erprobt. T2 - 43. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 22.04.2022 KW - Home made explosives KW - Explosiv- und Ausgangsstoffe KW - Sensor PY - 2022 AN - OPUS4-54687 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohrer, Christian T1 - Fachbereich 2.5 Konformitätsbewertung Explosivstoffe/Pyrotechnik N2 - Vorstellung der aktuellen Aufgaben und Tätigkeiten des FB 2.5 Konformitätsbewertung Explosivstoffe/Pyrotechnik T2 - 43. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 22.04.2022 KW - Benannte Stelle KW - Konformitätsbewertung KW - Normung KW - FE KW - Beratung Behörden/Ministerien PY - 2022 AN - OPUS4-54688 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohrer, Christian T1 - Forschungsschwerpunkte im Fachbereich 2.5 Konformitätsbewertung Explosivstoffe/Pyrotechnik N2 - Vorstellung der aktuellen Forschungsthemen mit Bezug zu Explosivstoffen und pyrotechnischen Gegenstände T2 - 43. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 22.04.2022 KW - Alterung von Pyrotechnik KW - Sprengplattieren KW - Fallhammer KW - Zünder PY - 2022 AN - OPUS4-54689 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lu, Xin A1 - Hicke, Konstantin A1 - Krebber, Katerina T1 - Dual-functionality of WS-COTDR for ground movement monitoring N2 - Wavelength scanning coherent optical time domain reflectometer (WS-COTDR) is a good candidate to spatially resolve the environmental information at comparatively low frequency. This paper reveals it can also work as a traditional optical time domain reflectometer (OTDR) to identify Fresnel reflection by averaging the obtained signal over the wavelength scanning range. Simultaneous distributed vibration sensing and a traditional OTDR measurement are experimentally demonstrated using the WS-COTDR system. T2 - European Workshop on Optical Fibre Sensors (EWOFS 2023) CY - Mons, Belgium DA - 23.05.2023 KW - Distributed fiber sensing KW - Acoustic sensing KW - Structural health monitoring PY - 2023 AN - OPUS4-57591 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Shaheen, Sabahat T1 - ɸgOTDR utilizing Geometric Phase for Earthquake Monitoring N2 - Geometric phase measured per beat period1 in a ɸ-OTDR based on coherent heterodyne detection2 is used to measure strain3, instead of the traditionally measured dynamic phase. The new setup is referred to as a ɸgOTDR. Results are verified using a piezo-electric transducer inline a fiber-undertest. T2 - European Workshop on Optical Fibre Sensors (EWOFS 2023) CY - Mons, Belgium DA - 23.05.2023 KW - Geometric Phase KW - Distributed Fiber Optic Sensor KW - Coherent Heterodyne PY - 2023 AN - OPUS4-57607 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ertural, Christina T1 - Automation of machine learning driven interatomic potential generation for predicting vibrational properties N2 - Investigating the phononic properties is beneficial for predicting low thermal conductivity thermoelectric materials.1–3 Employing density functional theory4 takes many calculation steps and consumes a lot of computational resources.5,6 Using machine learning driven interatomic potentials (MLIP, e.g., Gaussian approximation potential,8 GAP) opens up a faster route to phonons7 but in most cases, the potentials are specifically tailored for a certain compound. In this work, we automate the generation of such MLIPs in a Python code-based workflow, based on the automation tools atomate29 and pymatgen10 which combines the automatic DFT computations with the automated fitting of GAPs. Automation enables easier testing, benchmarking and validation.11 We aim to provide the workflow-generated potentials for storage in databases. T2 - 16th International conference on materials chemistry (MC16) CY - Dublin, Ireland DA - 03.07.2023 KW - Interatomic potentials KW - Machine learning KW - Phonons KW - Thermoelectrics PY - 2023 AN - OPUS4-57932 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goller, Sebastian M. T1 - How reactions between smoke suppressants in flame retardant PA6.6 change the burning behavior and smoke emission N2 - The interactions between polymer, flame retardant and smoke suppressant are presented. Moreover, it is discussed, how the molecular changes affect the fire behavior and the smoke emission. T2 - 19th European meeting on Fire Retardant Polymeric Materials (FRPM23) CY - Dübendorf, Switzerland DA - 26.06.2023 KW - Smoke KW - Polyamide KW - Flame retardancy KW - Smoke suppressant KW - Fire behavior PY - 2023 AN - OPUS4-57845 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jauregui Rozo, Maria T1 - Transfer of the modes of action from polymer materials to glass-fiber-reinforced plastics: flame retardancy – fire resistance – post-fire mechanics N2 - Fire resistance of fiber-reinforced polymers (FRPs) has been an important area of research for many years since FRPs are mainly used in the transportation and construction sectors. This study presents the fire behavior, and mechanical performance between the flame retarded pure epoxy resin and flame retarded glass-fiber composites before, during, and after a fire event. This enables a deeper understanding of the transferability of flame retardants on composite materials. T2 - 19th European Meeting on Fire Retardant Polymeric Materials (FRPM23) CY - Dübendorf, Switzerland DA - 26.06.2023 KW - Glass-fiber Reinforced Polymer KW - Flame Retardancy KW - Fire Behavior KW - Flammability KW - Modes of Action PY - 2023 AN - OPUS4-57846 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bustamante, Joana A1 - Naik, Aakash A1 - Ertural, Christina A1 - Ueltzen, Katharina A1 - George, Janine T1 - Thermodynamic and Thermoelectric Properties of the Canfieldite, (Ag8SnS6 ), in the Quasi-Harmonic Approximation N2 - Argyrodite-type materials have lately sparked a lot of research interest due to their thermoelectric properties.One promising candidate is canfieldite (Ag8SnS6), which has a Pna21 orthorhombic crystal structure at room temperature (RT). Recently, a new low-temperature (LT) phase transition of canfieldite at 120K has been found. Here, we investigate structural, vibrational and thermodynamic properties of Ag8SnS6 at room- and low-temperature employing density functional theory (DFT) and lattice dynamics computations. Thermal properties calculations were based on the quasi-harmonic approximation (QHA) as implemented in phonopy. We achieve good agreement with experiments. Thermal properties such as the constant-pressure heat capacity (Cp) and thermal conductivity are very close to experimental measurements. Furthermore, we compared RT and LT Ag8SnS6 Grüneisen parameters with argyrodites analogues, Ag8XS6 (X = Sn, Si, Ge), to arrive at an improved T2 - 16th International conference on materials chemistry (MC16) CY - Dublin, Ireland DA - 03.07.2023 KW - Thermoelectric materials KW - DFT KW - QHA KW - Grüneisen parameter PY - 2023 AN - OPUS4-57887 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hicke, Konstantin T1 - Distributed fiber optic radiation sensors for nuclear applications N2 - Advantages and underlying principles of distributed fiber optic radiation sensing are discussed. Differences with regard to dose measurement range and resolution between glass optical fiber based sensing and polymer optical fiber based sensing are outlined. T2 - DGZfP SMIRT26 Laborbesuch (BAM) CY - Berlin, Germany DA - 10.07.2022 KW - Distributed fiber optic sensing KW - Fiber optic radiation monitoring KW - Distributed fiber optic radiation sensing PY - 2022 AN - OPUS4-55264 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Fabian T1 - An optimized HR-CS-GFMAS method for PFAS analysis N2 - HR-CS-GFMAS turned out to be a sensitive, fast and highly selective tool for fluorine determination. The method is based on the in situ formation of diatomic gallium-mono fluoride (GaF) at a temperature of 1550°C. GaF can be detected at 211.248 nm providing limits of quantificationin the low μg/L range. However, several species specific effects where observed when analyzing PFASs. T2 - 1st Summer School of the CRC 1349 Fluorine-Specific Interactions Fundamentals and Functions CY - Berlin, Germany DA - 28.08.2023 KW - PFAS KW - HR-CS-GFMAS KW - Fluorine PY - 2023 AN - OPUS4-58145 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pelkner, Matthias T1 - Einsatz neuartiger, flexibler Magnetfeldsensoren für die ZfP N2 - Die Magnetpulverprüfung ist eine weit verbreitete Prüfmethode für ferromagnetische Bauteile. Hierbei werden Oberflächenfehler wie Risse mit ferromagnetischem Pulver sichtbar gemacht, wodurch eine qualitative Bewertung des Bauteils ermöglicht wird. Allerdings können die Anzeigen kaum zu einer quantitativen Bewertung herangezogen werden. Hierfür sind Magnetfeldsensoren nötig, die die Stärke der Streufelder messen, wodurch z. B. die Tiefe der Risse abgeschätzt werden kann. Bei kommerziellen Magnetfeldsensoren sind die sensitiven Elemente auf Platinen angebracht bzw. in eine Verkapselung integriert. Hierdurch erhöht sich der Abstand der Elemente zur Oberfläche und kleine Fehler können unter Umständen nicht mehr detektiert werden. Auch wird eine automatisierte Prüfung komplexer Geometrien durch die starren Sonden erschwert. Um Streufelder von kleinen Fehlern in komplexen Bauteilen quantitativ bewerten zu können, validiert die BAM den Einsatz neuartiger, flexibler Magnetfeldsensoren. Hierbei sind die sensitiven Elemente auf flexiblen Folien aufgebracht und lassen sich verformen, wodurch sie auf viele mögliche Oberflächenformen appliziert werden können. Es wird ein geringerer Abstand der Elemente zur Oberfläche erreicht und Streufelder von kleinen Defekten können besser aufgelöst werden. Zudem verlieren die Sensoren durch Verformung weder ihre Sensitivität noch werden sie hierdurch zerstört. Dies macht diese Sensoren zu perfekten Kandidaten für die quantitative Bewertung von Rissstreufeldern in komplex geformten, ferromagnetischen Bauteilen. Der Beitrag präsentiert die Charakterisierung der Sensoren sowie erste Versuche an komplexen Bauteilen. Schließlich wird eine Einschätzung hinsichtlich weiterer Anwendungsmöglichkeiten gegeben. T2 - DGZfP Jahrestagung 2023 CY - Friedrichshafen, Germany DA - 15.05.2023 KW - Flexible Elektronik KW - Flexible Sensorik KW - Magnetischer Streufluss KW - GMR KW - ZfP PY - 2023 AN - OPUS4-58081 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jauregui Rozo, Maria T1 - Transfer of the Flame Retardancy and Post-Fire Mechanics from Polymer Materials to Glass-Fiber-Reinforced Plastics N2 - This study presents the processability, fire behavior, and mechanical performance between the flame retarded pure epoxy resin and flame retarded glass-fiber-reinforced plastic before, during, and after a fire event. This enables a deeper understanding of the transferability of flame retardants, modes of action, char enhancement, and flame inhibition on composite materials T2 - Twenty-third international conference on composite materials (ICCM23) CY - Belfast, United Kingdom DA - 31.07.2023 KW - Glass-Fiber Reinforced Polymer KW - Flame Retardancy KW - Mechanical Testing KW - Epoxy Resin KW - Modes of Action PY - 2023 AN - OPUS4-58086 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - The RASEM System: A Technical Overview N2 - Occupational health is an important topic, especially in industry, where workers are exposed to airborne by-products (e.g., dust particles and gases). Therefore, continuous monitoring of the air quality in industrial environments is crucial to meet safety standards. For practical and economic reasons, high-quality, costly measurements are currently only carried out sparsely, both in time and space, i.e., measurement data are collected in single day campaigns at selected locations only. The project “Robot-assisted Environmental Monitoring for Air Quality Assessment in Industrial Scenarios” (RASEM) addresses this issue by bringing together the benefits of both – low- and high-cost – measuring technologies enabling cost-efficient long-term air quality monitoring in realtime: A stationary network of low-cost sensors that is augmented by mobile units carrying high-quality sensors. By mapping the distribution of gases and particles in industrial environments with the proposed RASEM system, measures can be identified to improve on-site working conditions much faster than using traditional methods. In this presentation, we detail the technical aspects of RASEM and introduce the mobile platforms used. T2 - Lange Nacht der Wissenschaften (LNDW) CY - Berlin, Germany DA - 17.06.2023 KW - Aerial Robot KW - Dust Sensor KW - Ground Robot KW - Low-cost KW - RASEM KW - Sensor Network PY - 2023 AN - OPUS4-58139 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishurova, Tatiana T1 - Failure Mechanisms Investigation by Means of in-situ Synchrotron Computed Tomography in Aluminum MMC-based Alloy Tailored for Additive Manufacturing N2 - Synchrotron X-ray computed tomography (SXCT) at BAMline has been paired with in-situ tensile loading to monitor damage evolution in LPBF Metal Matrix Composite (MMC) 7017 Aluminium alloy + 3 wt% Zr + 0.5 wt% TiC. The processing of the material leads formation to different categories of Zr-rich inclusions, precipitates and defects. In-situ SXCT test disclosed the critical role of the pre-cracks in the reinforcement phases in the failure mechanisms of LPBF MMC. The damage was initiated from lack-of-fusion defects and cracks propagated through coalescence with other defects. T2 - HZB Uer Meeting 2023 CY - Berlin, Germany DA - 22.06.23 KW - Additive manufacturing KW - BAMline KW - Synchrotron X-ray computed tomography KW - in-situ PY - 2023 AN - OPUS4-57801 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frenzel, Olivia T1 - Identification of Metabolites and Transformation Products of Bisphenols N2 - Bisphenol A (BPA) is used in Polycarbonate (PC), polyacrylic resins (PAR), polysulfones (PSU), epoxy resins (ER), and polyetherimides (PEI). It is also applied in recycled polyvinyl chloride (PVC). Many outdoor applications are made from these BPA-based materials which are exposed to a variety of environmental impacts, like temperature, global radiation, rain, and others. This could lead to damaging and aging of the material which might cause leaching or migration of pollutants into the environment. Understanding the fate and behavior of the released pollutants is very important. Therefore, different transformation products (TP) will be generated and analyzed: 1. To investigate the behavior of various bisphenols in wastewater treatment plants, possible technical TP are generated by UV irradiation. Simulation of Industrial wastewater treatment is realized by using the Fenton reaction, an advanced oxidation process. 2. To study the transformation of bisphenols in surface waters, global radiation will be simulated by using UVA lamps. 3. To simulate phase 1 metabolism, an electrochemical cell coupled to a mass selective detector is applied. The analysis of metabolites and TP are achieved by a variety of gas and liquid chromatographic techniques coupled with mass spectrometry. The elucidation of the exact structure of the obtained TP and metabolites are done by 1H- and/or 13C-NMR experiments. T2 - ANAKON23 CY - Vienna, Austria DA - 11.04.2023 KW - BPA KW - transformation KW - products KW - waste KW - water PY - 2023 AN - OPUS4-57767 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Karafiludis, Stephanos A1 - Stawski, Tomasz T1 - Crystallization study of transition metal phosphates: Characterization of a non-classical crystallization pathway N2 - Industrial and agricultural waste streams (waste waters, sludges, tailings etc.), which contain high concentrations of NH4+, PO43- and transition metals, are environmentally harmful due to their toxic pollutants. At the same time, phosphorus and selective transition metals such as Cobalt could be potentially depleted as a critical raw material due to the high demand and rapidly declining natural ore deposits. Therefore, due to simultaneous scarcity and abundance, the phosphorus and 3d metal recovery from agricultural, industrial, mining, or urban wastewaters have been an important factor in sustaining our global consumption and preservation of the natural environment. Typically, separate pathways have been considered to extract hazardous substances such as transition metals or phosphate, independently from each other. Here, we investigate the crystallization of transition metal phosphate (TMP) compounds (NH4MPO4∙6H2O, M3(PO4)2∙8H2O with M = Ni2+, Co2+, NixCo1-x2+ M-struvite and M-phosphate octahydrate) out of aqueous solutions, which allow for P, ammonia and metal co-precipitation. The precipitation of these compounds from industrial and agricultural waste waters has high potential as a P- and 3d metal recovery route. For this purpose, a detailed understanding of the crystallization process beginning from combination of solved ions and ending in a final crystalline product is required. Through adjusting the reaction conditions, the stability, crystallite size and morphology of the as-obtained TMPs could be controlled. Detailed investigations of the precipitation process in time using ex- and in-situ techniques provided new insights into their non-classical crystallization mechanism/crystal engineering of these materials. These TMPs involve transitional colloidal nanophases during the crystallization process. Over time, their complex amorphous framework changes significantly resulting simultaneously in an agglomeration and densification of the compound. After extended reaction times these colloidal nanophases condensed to a final crystal. However, the reaction kinetics of the formation of a final crystalline product and the lifetime of these intermediate phases vary significantly depending on the metal cation involved in the precipitation process. Ni-struvite is stable in a wide reactant concentration range and at different metal/phosphorus (M/P)-ratios, whereas Co tends to form Co-struvite and/or Co-phosphate octahydrate depending on the (M/P)-ratio. The mixed NixCo1-x system shows a significantly different crystallization behavior and reaction kinetics of the precipitation compared to the pure endmembers. The observed various degree of stability could be linked to the octahedral metal coordination environment in these compounds. The achieved level of control over the precipitates, is highly desirable for 3d- and P-recovery methods. Under this paradigm, the crystals can be potentially upcycled as precursor materials for (electro)catalytical applications. T2 - HZB Usermeeting 2023 CY - Berlin, Germany DA - 22.06.2023 KW - Struvite KW - Transition metal KW - Phosphates KW - Crystallization KW - Amorphous phases PY - 2023 AN - OPUS4-57775 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völker, Tobias T1 - LIBS ConSort Laserbasierte Baustoffsortierung zur Aufbereitung von Bau und Abbruchabfällen für die Kreislaufwirtschaft N2 - Geschlossene Materialkreisläufe und sortenreine Materialfraktionen sind erforderlich, um hohe Verwertungs und Recyclingquoten in der Bauindustrie zu erreichen Beim Recycling von Bau und Abbruchabfällen wurden bisher bevorzugt einfache, aber bewährte Techniken eingesetzt, um große Mengen Bauschutt in kurzer Zeit zu verarbeiten Dies steht im Gegensatz zu den immer komplexer werdenden Verbundwerkstoffen in der Mineralbaustoffindustrie Die aktuell oft praktizierte händische Klaubung bürgt viele Risiken und Gefahren für das ausführende Personal und basiert lediglich auf offensichtlichen, visuell erkennbaren Unterschieden zur Trennung Eine automatisierte, sensorgestützte Sortierung dieser Baustoffe könnte diese Praxis ergänzen oder ersetzen, um die Verarbeitungsgeschwindigkeit, die Recyclingraten, die Sortierqualität und die vorherrschenden Gesundheitsbedingungen zu verbessern. T2 - ReMin Statuskonferenz 2023 CY - Clausthal Zellerfeld, Germany DA - 20.06.2023 KW - LIBS PY - 2023 AN - OPUS4-57753 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ecke, Alexander T1 - The Fate of the Antibiotic Amoxicillin in the Aquatic Environment N2 - Contamination of the environment with antibiotics is of great concern as it promotes the evolution of antimicrobial resistances. In case of amoxicillin (AMX) in the aquatic environment, further risk arises from hydrolysis products (HPs) which can cause allergy. To assess these risks, a comprehensive investigation and understanding of the degradation of AMX is necessary. We investigated the hydrolysis rate of AMX in different types of water as well as the influence of temperature and irradiation. The content of the heavy metal ions copper and zinc was found to be crucial for the hydrolysis rate of AMX and stability of HPs. Eventually, a new degradation pathway for AMX could be elaborated and confirmed by tandem mass spectrometry (LC-MS/MS). T2 - Berliner Chemie in Praxis Symposium CY - Berlin, Germany DA - 07.10.2022 KW - Hydrolysis KW - Amoxicillin KW - LC-MS/MS KW - ICP-MS PY - 2022 AN - OPUS4-56026 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas A1 - Tkachenko, Viktoriya A1 - Zhang, Tianyun A1 - Luplow, Charleen A1 - Jüngert, A. A1 - Brackrock, Daniel A1 - Bertovic, Marija A1 - Kanzler, D. T1 - Der Unterschied zwischen Simulation und Praxis – Einfluss von Toleranzen im Ultraschallprüfsystem und deren Berücksichtigung N2 - Bei der simulationsunterstützten Planung kritischer Ultraschallprüfaufgaben ist die detaillierte Kenntnis der Parameter der eingesetzten Prüfköpfe von entscheidender Bedeutung. Durch die, in den Regelwerken (DIN EN ISO 22232-2) zugelassenen Toleranzen bei der Herstellung der Prüfköpfe sind einige Prüfkopfparameter nur ungefähr bekannt. Durch die Alterung von Prüfköpfen und Verschleiß können auch Parameter variieren, die nicht vollständig durch die erforderliche Justierung ausgeglichen werden können. Daher sind zusätzlichen Vorversuche oft unvermeidlich. In dieser Arbeit wurden nach einer statistischen Versuchsplanung (DoE) Untersuchungen zur relativen Echo-Empfindlichkeit von konventionellen Prüfköpfen durchgeführt. Die Auswertung wurde für prüfkopfbezogene und personenbezogene Stichproben durchgeführt. Es wird gezeigt, wie weit die Daten um den Zentralwert herum verteilt sind bzw. wie sehr sich das Testobjekt im untersuchten Merkmal unterscheidet. Gerade in Hinblick auf die Beurteilung der intrinsischen Fähigkeit von Prüfverfahren und der Human Factors wird das POD-Analysekonzept zur quantitativen Bewertung der Zuverlässigkeit weiterentwickelt. Die HF-Quantifizierung bezieht sich auf verschiedene Faktoren und Methoden, die in der Veröffentlichung von M. Bertovic et al. [1] ausführlich beschrieben wurden. Die Schritte, die für das Bewertungsverfahren zur POD-Analyse erforderlich sind, werden in der Veröffentlichung von D. Kanzler et al. [2] detailliert dargestellt. Die grundlegenden Anforderungen an die Testkörpersätze für die POD-Analyse wurden in der Publikation von A. Jüngert et al. [3] zusammengefasst. Diesbezüglich wurden mit Hilfe von Simulationsrechnungen die möglichen Abweichungen an Beispielen der im Projekt norm- POD ausgewählten Prüfanordnungen dargestellt. Die Ergebnisse wurden Messungen an Testkörpern gegenübergestellt. T2 - DGZfP JAHRESTAGUNG CY - Kassel, Germany DA - 23.05.2022 KW - Simulation KW - Zuverlässigkeit KW - POD KW - Ultraschallprüfung PY - 2022 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-560094 UR - https://www.ndt.net/article/dgzfp2022/papers/p33.pdf AN - OPUS4-56009 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Nicolas P. T1 - Gather Dust and Get Dusted: Long-Term Drift and Cleaning of Sharp GP2Y1010AU0F Dust Sensor in a Steel Factory N2 - The Sharp GP2Y1010AU0F is a widely used low-cost dust sensor, but despite its popularity, the manufacturer provides little information on the sensor. We installed 16 sensing nodes with Sharp dust sensors in a hot rolling mill of a steel factory. Our analysis shows a clear correlation between sensor drift and accumulated production of the steel factory. An eye should be kept on the long-term drift of the sensors to prevent early saturation. Two of 16 sensors experienced full saturation, each after around eight and ten months of operation. T2 - 38th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Poros, Greece DA - 20.09.2022 KW - Low-cost KW - Sensor network KW - Dust sensor KW - Sensor drift PY - 2022 AN - OPUS4-55908 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Amariamir, Sasan A1 - Benner, Philipp A1 - George, Janine T1 - Prediction of materials synthesizability N2 - In the pursuit of discovering materials with desirable properties, extending the available material libraries is crucial. High-throughput simulations have become an integral part in designing new materials in the past decades. However, there is no straightforward way of distinguishing synthesizable materials from all the proposed candidates. This project focuses on employing AI-driven methods to estimate synthesizability of materials. Up to now, material scientists and engineers have relied on domain knowledge as well as empirical heuristics to guess the stability and synthesizability of molecules and crystals. The famous Pauling rules of crystal stability are an example of such heuristics. However, after the accelerating material discovery in all the years since Pauling, these rules now fail to account for the stability of most known crystals. A new predictive set of heuristics for crystal stability/synthesizability is unlikely to be uncovered by human perception, given the magnitude and dimensionality of crystallographic data. Hence, a data-driven approach should be proposed to find a predictive model or set of heuristics which differentiate synthesizable crystal structures from the rest. The main challenge of this research problem is the lack of a negative set for classification. Here, there are two classes of data: the positive class which contains synthesizable materials and the negative class which contains materials which are not synthesizable. While the data from the positive class is simply the data of crystals which have been experimentally synthesized, we do not have access to data points which are certainly unsynthesizable. Strictly speaking, if an attempt of synthesizing a crystal fails, it does not necessarily follow that the crystal is not synthesizable. Also, there is no database available which contains the intended crystal structures of unsuccessful synthesis attempts. This project proposes a semi-supervised learning scheme to predict crystal synthesizability. The ML model is trained on experimental and theoretical crystal data. The initial featurization focuses on local environments which is inspired by the Pauling Rules. The experimental data points are downloaded through the Pymatgen API from the Materials Project database which contains relaxed structures recorded in Inorganic Crystal Structure Database – ICSD. The theoretical data is queried from select databases accessible through the Optimade project’s API. T2 - MSE Congress 2022 CY - Darmstadt, Germany DA - 27.09.2022 KW - Synthesizability KW - PU Learning KW - Cheminformatics PY - 2022 AN - OPUS4-56731 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holstein, Tanja T1 - Probability based taxonomic profiling of viral and microbiome samples using PepGM and Unipept N2 - In mass spectrometry based proteomics, protein homology leads to many shared peptides within and between species. This complicates taxonomic inference in samples of unknown taxonomic origin. PepGM uses a graphical model for taxonomic profiling of viral proteomes and metaproteomic datasets providing taxonomic confidence scores. To build the graphical model, a list of potentially present taxa needs to be inferred. To this end, we integrate Unipept, which enables the fast querying of potentially present taxa. Together, they allow for taxonomic inference with statistically sound confidence scores. T2 - HUPO 2022 world congress CY - Cancun, Mexico DA - 04.12.2022 KW - Bioinformatics KW - Mass spectrometry KW - Taxonomic analysis KW - Microbiomes PY - 2022 AN - OPUS4-56748 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holstein, Tanja T1 - PepGM: A graphical model for taxonomic profiling of viral proteomes N2 - In mass spectrometry based proteomics, protein homology leads to many shared peptides within and between species. This complicates taxonomic inference. inference. We introduce PepGM, a graphical model for taxonomic profiling of viral proteomes and metaproteomic datasets. Using the graphical model, our approach computes statistically sound scores for taxa based on peptide scores from a previous database search, eliminating the need for commonly used heuristics. heuristics. T2 - International conference on systems biology 2022 CY - Berlin, Germany DA - 07.10.2022 KW - Bioinformatics KW - Virus protoemics KW - Taxonomic analysis KW - Graphical models PY - 2022 AN - OPUS4-56749 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holstein, Tanja T1 - PepGM: A graphical model for taxonomic profiling of viral proteomes N2 - In mass spectrometry based proteomics, protein homology leads to many shared peptides within and between species. This complicates taxonomic inference. inference. We introduce PepGM, a graphical model for taxonomic profiling of viral proteomes and metaproteomic datasets. Using the graphical model, our approach computes statistically sound scores for taxa based on peptide scores from a previous database search, eliminating the need for commonly used heuristics. T2 - European bioinformatics community winter school 2022 CY - Lisbon, Portugal DA - 21.03.2022 KW - Bioinformatics KW - Virus protoemics KW - Taxonomic analysis KW - Graphical models PY - 2022 AN - OPUS4-56751 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holstein, Tanja T1 - PepGM: A graphical model for taxonomic profiling of viral proteomes N2 - In mass spectrometry based proteomics, protein homology leads to many shared peptides within and between species. This complicates taxonomic inference. inference. We introduce PepGM, a graphical model for taxonomic profiling of viral proteomes and metaproteomic datasets. Using the graphical model, our approach computes statistically sound scores for taxa based on peptide scores from a previous database search, eliminating the need for commonly used heuristics. T2 - HUPO conference 2021 CY - Online meeting DA - 04.12.2021 KW - Bioinformatics KW - Virus protoemics KW - Taxonomic analysis KW - Graphical models PY - 2021 AN - OPUS4-56752 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Costard, René T1 - “Kalte Pyrotechnik” – heißes Thema oder heiße Luft? N2 - Das Poster zeigt Ergebnisse von Messungen der Verbrennungstemperaturen und Aerosolemissionen von "kalter Pyrotechnik" und einem Seenotrettungsmittel im Vergleich. T2 - 44. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 14.04.2023 KW - Pyrotechnik KW - Missbräuchliche Verwendung in Stadien KW - Aerosole PY - 2023 AN - OPUS4-57311 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dengel, Jörg T1 - Untersuchung des Alterungsverhaltens von pyrotechnischen Seenotrettungsmitteln N2 - Das Poster zeigt Ergnisse der Untersuchung der Alterungsprozesse von pyrotechnischen Seenotrettungsmitteln (kleine schwimmfähige Rauchsignale und Seenotfackeln). Dabei erfolgte die Bewertung der thermischen und chemischen Stabilität sowie der Funktionssicherheit. Die beschleunigte Alterung (EN 16263:2015) und andere Methoden wurden mit natürlich gealterten Gegenständen verglichen T2 - 44. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 14.04.2023 KW - Alterung von Pyrotechnik KW - Seenotrettungsmittel PY - 2023 AN - OPUS4-57312 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prager, Jens T1 - Akustische Bestimmung der Werkstoffparameter faserverstärkter Kunststoffe mittels geführter Wellen N2 - Akustische Verfahren eignen sich hervorragend zur Bestimmung der Werkstoffeigenschaften. Die Verfügbarkeit derartiger Verfahren ist vor allem für Kunststoffe wichtig, da deren Eigenschaften stark abhängig vom jeweiligen Herstellungsprozess und vom Alterungszustand sind. Exakte und vollständige Werte sind daher in Datenbanken oder von Herstellern nur begrenzt zu finden. Insbesondere die Entwicklung von Methoden zur Charakterisierung faserverstärkter Kunststoffe (FKV) ist nach wie vor Gegenstand der Forschung. Hier müssen anisotropiebedingt mehrere Kennwerte bestimmt werden. Da FKV zumeist als dünnwandige Bauteile zum Einsatz kommen, können die Werkstoffparameter aus den Dispersionseigenschaften der Lamb-Wellen, die sich in diesen Strukturen ausbreiten, abgeleitet werden. Dazu ist eine räumliche Abtastung des sich ausbreitenden Schallfelds erforderlich. In der vorliegenden Untersuchung wird dieser Ansatz für die relativ neue Werkstoffklasse der faserverstärkten Thermoplaste angewendet. Diese zeichnet ein ausgeprägtes Dämpfungsverhalten und eine Anisotropie der Materialparameter aus. Dazu wurde das Schallfeld im Ultraschallbereich mit einem Laser-Doppler-Vibrometers vermessen. Rechnerisch bestimmte Dispersionskurven wurden dann an die gemessenen Werte angepasst, womit die richtungsabhängigen Materialparameter bestimmt werden konnten. Im Vortrag wird das Messverfahren vorgestellt und auf spezielle Probleme, die sich z.B. aus dem Dämpfungsverhalten des Werkstoffs ergeben, eingegangen. Ausgewählte gemessene Werte werden mit den Ergebnissen von Referenzverfahren verglichen. T2 - DAGA 2021 - 47. Jahrestagung für Akustik CY - Vienna, Austria DA - 15.08.2021 KW - Ultraschall KW - Composites KW - Thermoplastische Kunststoffe PY - 2021 AN - OPUS4-57344 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frenzel, Olivia T1 - Identification of Metabolites and Transformation Products of Bisphenols N2 - Bisphenol A (BPA) is used in Polycarbonate, Polyacrylic resins, Polysulfones, Epoxy resins, and Polyetherimides. It is also used in recycled Polyvinyl chloride [1–3]. BPA has been classified as a substance of very high concern (SVHC) under REACH [4] due to its endocrine disrupting properties. The German competent authorities want to reduce the content of BPA in the environment. Possible substitutes for BPA are Bisphenol B (BPB), Bisphenol E (BPE), Bisphenol F (BPF), or Bisphenol S (BPS), as they are similar in structure. BPA-based materials have a wide area of application especially outside. These outdoor applications are exposed to different external influences, including physical, biological, mechanical and chemical influences. This results in damage and aging of the material with leaching or migration into the environment. There, the substance is transformed by various transformation processes. The emerging metabolites and transformation products (TPs) can have different properties than the parent substance. Understanding the fate and behavior of the emerging pollutants is very important. Therefore, different transformation products of selected bisphenols will be generated and analyzed: To investigate the fate of different bisphenols in water treatment plants technical transformation products [5] will be generated by chlorination, ozonization, the Fenton reaction, and UV-radiation. For the investigation of the fate of Bisphenols in surface water global radiation will be simulated with UVA-lamps Simulation of phase-I-metabolism with an electrochemical cell coupled to mass spectrometry (EC-MS). T2 - Anakon 2023 CY - Vienna, Austria DA - 11.04.2023 KW - Transformation products KW - Bisphenols KW - Metabolites KW - Wastewater KW - Environment PY - 2022 AN - OPUS4-57374 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen A1 - Kazlagić, Anera T1 - Interlaboratory comparison on conventional 87Sr/ 86Sr isotope ratio analysis by applying MC-ICP-MS and MC-TIMS N2 - The variation of isotope ratios is increasingly used to unravel natural and technical questions. With new upcoming techniques and research topics in the last two decades, such as material provenance or food authenticity to animal and human migration studies, the number of published isotope data has strongly increased. Here, isotope reference materials are indispensable to enable a reliable method validation or even SI-traceability. The fast development and broad availability of inductively coupled plasma mass spectrometry instrumentation (ICP-MS) also lead to an expansion of the classical research areas and new elements are under investigation. Owing to this large expansion of the field, the production and certification of isotope reference materials for calibration and validation is lagging behind, even for classical applications such as conventional 87Sr/86Sr isotope ratio analysis. To improve this situation, BAM organized an interlaboratory comparison (ILC) comprising of thirteen international laboratories for the characterisation of 87Sr/86Sr isotope ratios in geochemical and industrial reference materials. Six reference materials (four cements and two rocks) were provided as powder requiring extensive sample preparation prior to isotopic measurement. Additional requirements included the use of the conventional method for obtaining 87Sr/86Sr isotope ratios, also known as radiogenic 87Sr/86Sr isotope ratios, and the assessment of the measurement uncertainty. The primary goal was to evaluate potential differences in the application of multicollector thermal ionization mass spectrometry (MC-TIMS) and multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS) for conventional 87Sr/86Sr isotope ratio determination, with a secondary goal to provide reference values for the 87Sr/86Sr isotope ratios in these potential new reference materials. All reported results are accompanied by an uncertainty statement and are traceable to the conventional method, which will be described in detail within this presentation. Current state-of-the-art statistical models were used to ensure the proper evaluation of the reported results and their associated measurement uncertainties within the frame of this ILC. Combined with results from appropriate homogeneity assessment, reference values for 87Sr/86Sr isotope ratios will be assigned. T2 - European Winter Conference on Plasma Spectrochemistry CY - Ljubljana, Slovenia DA - 29.01.2023 KW - Conventional isotope ratio KW - Reference material KW - Uncertainty KW - Comparability PY - 2023 AN - OPUS4-58011 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oelze, Marcus T1 - A second anchor Fe isotope reference material based on high purity Fe metal for the exhausted IRMM-014 N2 - Iron isotopes are used in a variety of fields from e.g., geologic question to medical applications. Measurements of iron isotopes are usually performed as delta measurements to an artificial based delta zero standard. In the case of Fe isotopes is that delta zero standard IRMM-014, a pure Fe metal. Unfortunately, that conventional delta zero reference material defining the 56/54Fe scale is out of stock and therefore unavailable. To overcome that situation and fulfill the need for laboratories that measure Fe isotope on a regular basis we will provide a set of solutions with IRMM-014 and a second anchor point for Fe isotope ratio measurements that is based on a pure Fe metal. This new second anchor point, a high purity Fe from BAM, will be calibrated against IRMM-014 and can be used as bracketing standard or as reference value for stable Fe isotope measurements. We are in the good situation that BAM ordered a large stock of IRMM-014 several years ago. That stock of IRMM-014 Fe cubes and IRMM-014 Fe wires will be dissolved in 6M HCl in a large quantity. The new anchor point, the high purity Fe metal, that is commercially available at BAM, is a pure Fe metal with only trace amounts of impurities. The high purity BAM material will also be dissolved in 6M HCl in large quantity. Several aliquots of both solutions will be measured on the Neptune Plus MC-ICP-MS to define this second anchor point with a low uncertainty. Further will we send several aliquots of both solutions to different laboratories to also measure this second anchor point of high purity Fe on the 56/54Fe scale. We will report the values of that study on BAM high purity Fe and will provide a guide for scale conversion to the IRMM-014 scale and for uncertainty calculation to use that new anchor point instead of the exhausted IRMM-014. T2 - EWCPS CY - Ljubljana, Slovenia DA - 30.01.2023 KW - Iron isotopes KW - Reference material PY - 2023 AN - OPUS4-58012 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chronakis, Michail Ioannis A1 - von der Au, Marcus A1 - Faßbender, Sebastian A1 - Vogl, Jochen A1 - Meermann, Björn T1 - MDG-ICP-ToF-MS: A Versatile Tool for Quantification in the field of Single Particle ICP-MS Using Isotope Dilution N2 - In the interest of exploring their potential in the field of single particle analysis, a Microdroplet Generator (MDG) was coupled to an ICP-ToF-MS. Isotopic Dilution Analysis was also incorporated for the size determination of three different Platinum nanoparticles samples (50, 63 and 70 nm). The performance of the technique was validated by comparison to traditional size characterization techniques (sp-ICP-ToF-MS, TEM), while the robustness of the technique was proven by incorporating NaCl in the samples’ matrix, up to 100 mg/L. T2 - European Winter Conference on Plasma Spectrochemistry CY - Ljubljana, Slovenia DA - 29.01.2023 KW - MDG KW - Single Particle KW - Isotope Dilution PY - 2023 AN - OPUS4-57643 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Konthur, Zoltán T1 - Deutschlandweite Bestimmung anthropogener Marker im Abwasser N2 - Die von der Europäischen Kommission im Jahr 2021 empfohlene, systematische Abwasserüberwachung mittels PCR-Techniken wird als ein wirksames Früh-warnsystem für künftige Pandemien durch Viren und andere Krankheitserreger betrachtet. Ein generelles Problem bei jeder quantitativen Messung von Parametern im Abwasser ist die starke Schwankung des Abwasservolumens und seiner Zusammensetzung im Tages- und Jahreszeitenverlauf. Um die Konzentrationsbestimmungen von Krankheitserregern im Abwasser in Korrelation mit menschlichen Einträgen setzen zu können, könnten sog. "anthropogene Marker" eine herausragende Rolle spielen, deren Eintrag ins Abwasser menschlichen Ursprungs sind. Im Projekt werden mittels ELISA die Konzentrationen ausgewählter anthropogener Marker in deutschlandweit gesammelten Abwasserproben erhoben und analysiert. T2 - Spurenstoffe und Krankheitserreger im Wasserkreislauf CY - Frankfurt/Main, Germany DA - 27.03.2023 KW - Carbamazepin KW - Koffein KW - Diclofenac KW - Isolithocholsäure PY - 2023 AN - OPUS4-57718 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, Andre T1 - Fire Influence to Wood Filled Impact Limiters - Implications for the Package Design Safety Case N2 - Impact limiters with wooden components are widely used in the design of packages for transportation of radioactive material. In most designs, the wood is encapsulated with steel sheets. Impact limiters mainly determine the mechanical and thermal behaviour of the package in accident conditions of transport in accordance with the IAEA Regulations. In context with research and development for package design approval competence, the thermal behaviour of heavy-weight packages was investigated at BAM with an artificially pre-damaged generic impact limiter design. Within this first investigation, the pre-damaged impact limiter with a diameter of 2.3 meters was mounted on a water tank simulating the thermal capacity of a cask during the fire test. The water tank is part of a water circulating system built of several components such as pump, heater, cooler, sliding valve, flow meter, thermocouples and control unit in order to measure the heat flux. Furthermore, the investigations focus on the effects this additional heat generation would have on the cask and especially on the lid-closure system with the gasket. The results of these experiments could find consideration in the safety case of the transport packages of radioactive material using wood filled impact limiters. T2 - 20th International Symposium on the Packaging and Transportation of Radioactive Materials CY - Juan-les-Pins, France DA - 11.06.2023 KW - Fire test KW - Impact limiter KW - Mechanical and thermal behaviour PY - 2023 AN - OPUS4-57719 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grunert, Wiebke T1 - ODYSSEUS - EU-Projekt im Rahmen des Förderprogramms Horizon 2020 N2 - Das Poster beleuchtet das EU-Projekt ODYSSEUS im Rahmen des Förderprogramms Horizon 2020. Das Konsortium besteht aus 18 Partnern aus 13 Ländern aus Forschung, Entwicklung, Industrie sowie Behörden und Organisationen mit Sicherheitsaufgaben. Das Forschungsprojekt zielt darauf ab, das Wissen über Ausgangsstoffe von Sprengstoffen und selbst hergestellten Sprengstoffe, einschließlich bisher nicht untersuchter Vorläufersubstanzen, zu erweitern und wirksame und effiziente Prognose-, Aufdeckungs- und kriminaltechnische Instrumente zu entwickeln, um die Fähigkeiten der nationalen Sicherheitsbehörden bei der Verhütung, Bekämpfung und Untersuchung terroristischer Vorfälle mit HMEs zu verbessern. T2 - 45. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 05.04.2024 KW - Home-made explosives (HME) KW - Anschläge KW - Synthese HME PY - 2024 AN - OPUS4-59809 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Costard, René T1 - Aerosolemissionen ausgewählter Pyrotechnik - missbräuchliche Verwendung in Stadien N2 - Das Poster beschreibt die Ergebnisse von Messungen zur Freisetzung von Aerosolen beim Abbrand pyrotechnischer Gegenstände. Vor dem Hintergrund einer missbräuchlichen Verwendung (wie etwa in Fußballstadien) wird auf die speziellen Gefährdungen hingewiesen. Freigesetzte Partikel haben Größenbereiche von deutlich kleiner 100 nm und sind damit besonders alveolengängig. T2 - 45. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 05.04.2024 KW - Pyrotechnik KW - Aerosole KW - Missbräuchliche Verwendung PY - 2024 AN - OPUS4-59806 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohrer, Christian T1 - Konformitätsbewertung Explosivstoffe/Pyrotechnik N2 - Das Poster beschreibt die aktuellen Aufgaben und Herausforderungen im Bereich der Konformitätsbewertung von zivilen Explosivstoffen und pyrotechnischen Gegenständen. Es wird dabei auf die Tätigkeiten der BAM als benannten Stelle in der EU (CE-System) und als approved body für das Vereinigte Königreich (UKCA-System) eingegangen. T2 - 45. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 05.04.2024 KW - Zivile Explosivstoffe KW - Pyrotechnik KW - CE KW - UKCA KW - Konformitätsbewertung PY - 2024 AN - OPUS4-59807 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Christian T1 - Eignungsprüfungen geophysikalischer Sensoren zur Rissdetektion an Demonstrationsbauwerken N2 - Bei der Betonage von Abdichtbauwerken können Temperaturen bis 110 °C und hohe Drücke bis 5 MPa erreicht werden. Mittels Technikumsversuchen wurde nachgewiesen, dass Mikroakustik- und Ultraschallsensoren zum Einbau in Demonstrationsbauwerke geeignet sind. Die Untersuchungen wurden bei der BAM (Bundesanstalt für Materialforschung und -prüfung) in Berlin durchgeführt. Es ist vorgesehen, die Sensoren in Morsleben am Demonstrationsbauwerk im Anhydrit einzusetzen. T2 - 84. Jahrestagung der Deutschen Geophysikalischen Gesellschaft CY - Jena, Germany DA - 10.03.2024 KW - Ultraschall KW - Eignungsprüfung KW - Risse KW - Abdichtbauwerk KW - Anhydrit PY - 2024 AN - OPUS4-59772 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hantschke, Luisa Lamberta T1 - Comparison of three different TOP-Assay approaches for the determination of PFAS concentration in soil N2 - Per- and polyfluoroalkyl substances (PFAS) are a large, ever-growing and widely used class of chemicals. Due to the strength of the C-F bond, they do not decompose but accumulate in the environment posing a risk for nature and humans alike. While the use of some PFAS, like perfluorooctanoic acid (PFOA) is already regulated in the EU, new ‘precursor’ substances are used to replace them. However, these precursors may be equally harmful to the environment. In recent years, many ‘hot spot’ sites with high PFAS contaminations in soil have been distinguished, but no German-wide background values have been determined yet. Knowing these background values is crucial to understand the degree of PFAS contamination, underpinning future regulatory decisions. Due to the complexity and variety of different PFAS compounds, one needs to apply a broad spectrum of different techniques to capture most of the PFAS content in one sample. In the framework of this project, 600 soil samples are taken at different sites all over Germany. The concentration of 30 PFAS - 13 carboxylic acids (C4-C18), 5 sulfonic acids (C4-C10) and 12 precursor substances) - is determined in these soil samples using three different sample preparation approaches: 1) ultrasonic extraction of the soil samples with Methanol; 2) preparation of eluates to test the leaching behaviour of the PFAS and 3) TOP assays following the method published by Houtz & Sedlak. Targeted LC-MS/MS is used to determine PFAS concentration after all three preparation steps. For the TOP-assay, the concentration of all 30 PFAS is compared prior to and after the oxidation reaction. Besides the ‘classic’ TOP-Assay, two other TOP-Assay approaches, the dTOP Assay and the photoTOP-Assay, are tested and the results of all three approaches are compared. First, all three TOP-Assay approaches will be tested on a reference soil spiked with a solution including all 30 PFAS measured in the project. Later, soil samples taken in the frame of the priorly described project will be tested. This poster will focus on the results of the experiments comparing the three different TOP Assay approaches in spiked reference soil. Additionally, some of the results of the other sample preparation methods, extraction and eluate preparation will be presented. T2 - FLUOROS 2023 CY - Idstein, Germany DA - 31.08.2023 KW - PFAS TOP Assay soil contamination PY - 2023 AN - OPUS4-58267 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - Determining thermal transitions in thin polymer layers by means of spectroscopic ellipsometry N2 - Thin polymer layers have enormous technical significance as polymer coatings on materials are very cost-effective for tailoring properties of surfaces. Apart from technical aspects in their use, thin polymer layers can be used to determine dimensional aspects in properties of material, such as confinement effects. In this work, we investigated several different polymer layer materials and determined their glass transition region by means of temperature-dependent spectroscopic ellipsometry. We have optimised our fitting procedure of the ellipsometric data produced in temperature ramp experiments. By this, we could measure the dependence of Tg on the layer thickness in a wide variety of thickness values, proving the existence of confinement effects in the investigated systems. We compare numerical methods for determining the location of the glass transition and discuss the possibilities of different analysis methods when determining thermal transitions. We also discuss the simultaneous existence of these transitions and annealing effects and the implications on the accuracy of the determined data. T2 - 12th Workshop Ellipsometry 2023 CY - Prague, Czech Republic DA - 18.09.2023 KW - Thin Films KW - Polymers KW - Ellipsometry KW - Themal Transitions PY - 2023 AN - OPUS4-58413 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lengas, Nikolaos A1 - Müller, Karsten A1 - Schlick-Hasper, Eva A1 - Neitsch, Marcel A1 - Johann, Sergej A1 - Zehn, M. W. T1 - FEA of the mechanical response of installed impact target foundations in drop tests of dangerous goods packagings N2 - Packagings for the transport of dangerous goods need to meet special requirements to get an approval. This includes free fall drop testing onto an essentially unyielding surface as a means to assess a package’s resistance to mechanical damage. A main requirement for drop tests is that the impact target’s mass shall be at least 50 times that of the heaviest package to be tested. Nevertheless, many manufacturers do not possess foundation structures with the required mass ratio. Previous evidence highlights that the mass ratio is not a decisive criterion on its own. Parameters such as the impact target foundation’s connection and the impulse experienced by the impacting object are essential as well. However, these factors are not easily verifiable since experimental measurements are not possible at most facilities. The objective of this work is to provide a detailed analysis on the interaction between impact target foundation and subgrade in dynamic impact testing using validated finite-element (FE) models. This research is highly beneficial for industrial application since it allows manufacturers to make informed predictions about the mechanical response of installed impact target foundations. T2 - FEMS EUROMAT 2023 CY - Frankfurt a. M., Germany DA - 03.09.2012 KW - Dangerous goods packagings KW - Drop test KW - Foundation KW - Structural dynamics PY - 2023 AN - OPUS4-58213 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bayerlein, Bernd T1 - PMDco - Platform MaterialDigital Core Ontology N2 - The PMD Core Ontology (PMDco) is a comprehensive set of building blocks produced via consensus building. The ontological building blocks provide a framework representing knowledge about fundamental concepts used in Materials Science and Engineering (MSE) today. The PMDco is a mid-level ontology that establishes connections between narrower MSE application ontologies and domain neutral concepts used in already established broader (top-level) ontologies. The primary goal of the PMDco design is to enable interoperability between various other MSE-related ontologies and other common ontologies. PMDco’s class structure is both comprehensive and extensible, rendering it an efficient tool to structure MSE knowledge. The PMDco serves as a semantic middle-layer unifying common MSE concepts via semantic mapping to other semantic representations using well-known key terms used in the MSE domain. The PMDco enables straight-forward documentation and tracking of science data generation and in consequence enables high-quality FAIR data that allows for precise reproducibility of scientific experiments. The design of PMDco is based on the W3C Provenance Ontology (PROV-O), which provides a standard framework for capturing the production, derivation, and attribution of resources. Via this foundation, the PMDco enables the integration of data from various data origins and the representation of complex workflows. In summary, the PMDco is a valuable advancement for researchers and practitioners in MSE domains. It provides a common MSE vocabulary to represent and share knowledge, allowing for efficient collaboration and promoting interoperability between diverse domains. Its design allows for the systematic integration of data and metadata, enabling seamless tracing of science data. Overall, the PMDco is a crucial step towards a unified and comprehensive understanding of the MSE domain in general. T2 - FEMS EUROMAT 2023 CY - Frankfurt a. M., Germany DA - 03.09.2023 KW - Knowledge Representation KW - Ontology KW - Semantic Interoperability KW - FAIR KW - Automation PY - 2023 AN - OPUS4-58197 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sunder, S. T1 - Microstructure analysis and mechanical characterization of flame-retardant epoxy resins transferred to glass fiber composites via prepregs N2 - The transfer of flame-retardant epoxy resin formulations to composites for structural and lightweight applications in the energy and transport sector can be complex and requires systematic investigation. Here, uncoated and silane-coated ammonium polyphosphate (APP, Si-APP) intumescent compounds are transferred to prepregs using a Bisphenol A diglycidyl ether (DGEBA) resin matrix to 0/90o bidirectional glass fibers with an aerial weight of 600 g/m2. Inorganic silicates (InSi) are added to improve the fire residues of the composites after combustion and the total amount of flame retardants in the resin formulations was 10% by weight. The prepregs' fiber volume content (FVC) is corroborated using in-process measurements and thermogravimetric analysis. This was found to be approximately 60% for the composites containing APP, which is ideal for load-bearing applications with high mechanical strength. However, the Si-APP containing prepregs showed an inconsistent FVC potentially due to interactions with the commercial sizing of the glass fibers. The composites subsequently prepared are analysed for potential filtration effects of the additives via SEM after immobilization in a cured resin and platinum sputtering. The inter-laminar shear strength and the mechanical strength of the composites are compared via three-point bending tests. Additionally, the fire performance of the composites is analysed using cone calorimetry. It was found there was minimal impact of the loading of the flame retardants on the delamination of the composites and the flexural strength. However, the high density of the glass fibers possibly results in a suppression of the mode of action of the flame retardants in the composites. Therefore, the fire residues of the composites are further compared using SEM, and the flame-retardant modes of action upon transfer are investigated. T2 - FEMS EUROMAT 23 CY - Frankfurt am Main, Germany DA - 03.09.2023 KW - Lightweight construction KW - Flame retardancy KW - Composites PY - 2023 AN - OPUS4-59136 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sunder, S. T1 - Adapting intumescent/low-melting glass flame-retardant formulations for transfer to glass-fiber-reinforced composites and post-fire mechanical analysis N2 - The residual post-fire mechanical properties of fiber-reinforced epoxy composites are influenced by their fire residues after burning. This study uses intumescent/low-melting glass flame retardants to tailor fire residues in epoxy resin. Processibility of prepregs and their quality are analysed for transfer of the flame-retardant epoxy resins to layered glass-fiber reinforced composites. Minimal effects were found on the pre-fire flexural strengths of the composites due to low loading of the flame retardants. However, when transferred to glass-fiber reinforced composites, the fire residues diminish significantly. Further studies are required to improve theoretical and experimental estimations of the post-fire mechanics of the composites. T2 - SAMPE Europe Conference 2023 CY - Madrid, Spain DA - 03.10.2023 KW - Composites KW - Flame retardancy KW - Lightweight KW - Post fire mechanics KW - Intumescent PY - 2023 AN - OPUS4-59137 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf T1 - Expression of Aspergillus niger Fumonisin Amine Oxidase (AnFAO) for an Electrochemical Detection of the Mycotoxin N2 - The poster describes how molecular biology, especially recombinant expression of proteins, in this case, an enzyme, can underpin developments of biosensors. The fumonisin oxidase produced by the fungus Aspergillus niger (AnFAO) is highly selective for the toxic mycotoxin fumonisin. Its structure and sequence has been published before. We took this information and expressed the enzyme in E. coli. The enzyme proved active and could be employed in an amperometric biosensor for the detection of the mycotoxin. T2 - 30. Leibniz Conference of Advanced Science CY - Berlin, Germany DA - 06.10.2023 KW - Biosensor KW - Enyzme KW - Recombinant KW - Electrochemical detection PY - 2023 AN - OPUS4-59241 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Fabian T1 - Development of multi-layer SPE approaches for PFAS determination in surface water samples utilizing HR-CS-GFMAS N2 - Per- and polyfluoroalkyl substances (PFAS) have received global public attention because of their wide distribution in aquatic environments and potential adverse effects to humans and wildlife. Due to the lack of analytical standards and the enormous numbers of these compounds, current target-based methods (e.g., LC-MS/MS) are not suitable for the analysis of new/unknown PFAS and transformation products. Therefore, PFAS sum parameter analysis is becoming increasingly important. For PFAS determination of surface waters, solid phase extraction (SPE) is commonly implemented for clean-up and pre-concentration of samples. Thus, within this work, single-layer SPE methods (based on Strata™-X, Strata™-X-AW, Strata™-NH2 and Oasis-HLB) were investigated for maximum PFAS coverage utilizing extractable organically bound fluorine (EOF) analysis. Thereby, the optimization procedure relied on the analysis of 3 surface water samples in Berlin, Germany, which were affected by the effluent discharge of wastewater treatment plants. To analyse the SPE elution profiles for EOF and inorganic fluorine, high resolution-continuum source-graphite furnace molecular absorption spectroscopy (HR-CS-GFMAS) and ion chromatography (IC) were used, respectively. Highest EOF concentrations were achieved by using Strata-X/Strata-XAW as SPE sorbents and methanol as eluent. Furthermore, combinations of the most promising SPE sorbents were selected (X/XAW, XAW/X, HLB/X and WAX/GCB) to extract a wider range of PFASs. By comparing multi-layer SPE methods, lower EOF concentrations were obtained for all investigated combination phases compared to the analysed single phases. For the commercially available combination phase Strata-PFAS (WAX/GCB) for all three river water samples, lower EOF concentrations (1.5 times lower) were determined compared to Strata-X. The results have shown that single-layer SPE systems are currently superior compared to combination phases for PFAS sum parameter analysis. The multi-layer SPE methods need further optimization regarding appropriate sorbent combinations, loading volumes and elution conditions. The developed single-layer SPE methods can help to elucidate pollutions hotspots and discharge routes. T2 - Analytica Conference 2024 CY - Munich, Germany DA - 09.04.2024 KW - PFAS KW - HR-CS-GFMAS KW - Fluorine KW - SPE PY - 2024 AN - OPUS4-59890 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seeber, Henrik T1 - Experimenteller Ansatz zur Untersuchung der primären Explosionswirkung N2 - Explosionsverletzungen gehören zu den häufigsten Verletzungen bei militärischen Einsätzen. Während die Auswirkungen von Splittern, die als sekundäre Explosionsverletzungen eingestuft werden, durch die modernen ballistischen Körperschutzsysteme der Polizei und des Militärs minimiert werden konnten, stellen die Auswirkungen der Stoßwellenausbreitung im Körper als Teil des primären Explosionstraumas nach wie vor eine ernsthafte Bedrohung dar. Zusätzlich zu einzelnen einsatzbedingten Lastfällen liegt ein wissenschaftlicher Fokus auf besonders exponiertem Personal, z.B. aus den Einsatzbereichen „Taktische Zugangstechnik“, „Präzisionsschützenwesen“ oder Steilfeuerwaffen (Mörser). Repetitive mild traumatic brain injury (mTBI) können gesundheitliche Langzeitschädigungen wie und chronic traumatic encephalopathy (CTE) erzeugen. Um einen Beitrag zur Erforschung der primären Explosionswirkungen zu leisten, hat die Bundeswehr in Zusammenarbeit mit dem Bundeswehrkrankenhaus Berlin und der Bundesanstalt für Materialforschung und -prüfung (BAM) ein interdisziplinäres wehrmedizinisches Sonderforschungsvorhaben eingerichtet. Ziel der geplanten Untersuchung ist die Entwicklung einer multidisziplinären Methode zur Analyse des Stoßwellenverhaltens in verschiedenen generischen Gewebesimulanzien, sowie Schutzmaterialien unter möglichst realitätsnahen und reproduzierbaren Bedingungen. Für die Erzeugung reproduzierbarer Stoßwellen wurde ein Autoklav (Druckbehälter) entwickelt, mit dem durch die detonative Umsetzung eines Acetylen-Sauerstoff-Gemisches gut reproduzierbare Druckwellen unter Freifeldbedingungen erzeugt werden können. Vorteile dieser Methode sind unter anderem die kurzen Rüstzeiten zwischen Versuchsdurchgängen, die Minimierung störender Einflüsse im Vergleich zu Stoßwellenrohren und die geringeren Sicherheitsanforderungen im Vergleich zur Anwendung von konventionellen Sprengstoffen. Das generische Torso-Modell besteht in seiner einfachsten Form aus einem mit Druck- und Beschleunigungssensoren instrumentierten Gelatineblock, welcher eine Simulanz für organisches Gewebe darstellt. Zur Untersuchung des Stoßwellenverhaltens wurden verschiedene Medien, wie Hohlkörper, Festkörper und Gewebesimulanzien differenter Dichte in das generische Torso-Modell eingebracht. Einen besonderer Untersuchungsschwerpunkt bildeten die Grenzbereiche zwischen den unterschiedlichen Medien. Des Weiteren wurde analysiert, wie sich verschiedene Schutzmaterialien auf das Stoßwellenverhalten auswirken und mit welchen veränderten Eigenschaften die Stoßwelle anschließend in die Gewebesimulanz einkoppelt. T2 - Angewandte Forschung für Verteidigung und Sicherheit in Deutschland CY - Bonn, Germany DA - 19.03.2024 KW - Primäre Explosionswirkug KW - Blast injury KW - Pressure wave KW - Druckwelle PY - 2024 AN - OPUS4-59474 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wosniok, Aleksander T1 - Verteilte POF-basierte faseroptische Sensoren zur Infrastrukturüberwachung in der Geotechnik N2 - Wir präsentieren unsere Forschungsergebnisse zur Entwicklung eines faseroptischen Sensorsystems mit polymeroptischen Fasern integriert in Geokunststoffe für die Überwachung von geotechnischen Anlagen. Das Sensorsystem dient der räumlichen Auflösung lokaler Dehnungsereignisse im für Anwender signifikanten Größenordnungsbereich von 3 % bis 10 %. Das gesamte Sensorkonzept besteht aus einem praxistauglichen Messsystem basierend auf der digitalen inkohärenten optischen Frequenzbereichsreflektometrie (I-OFDR) und einer Sensormatte in Form eines Geotextils mit integrierten faseroptischen perfluorierten polymeroptischen Fasern (PF-POFs). T2 - DGZfP Fachtagung Bauwerksdiagnose 2024 CY - Berlin, Germany DA - 29.02.2024 KW - Ortsverteilte faseroptische Sensorik KW - Optische Frequenzbereichsreflektometrie KW - Bauwerksüberwachung KW - Sensorbasierte Geokunststoffe PY - 2024 AN - OPUS4-59633 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Alexander A1 - Zhang, Tianyun T1 - Modellierung von Ultraschall- und Wirbelstromschienenprüfdaten N2 - Im Rahmen des Forschungsprojekts "Artificial Intelligence for Rail Inspection" (AIFRI) wird ein KI-Algorithmus entwickelt, um die Fehlererkennung und Bewertung bei der Auswertung von Schienenprüfungen mittels Ultraschall- und Wirbelstromprüfverfahren zu verbessern. Die Bandbreite möglicher Defekte und die Menge an Einflussgrößen auf die Schienenprüfung ist sehr groß, aber die Prüfdaten aus dem Feld bilden diese Bandbreite nicht balanciert ab und sind unzureichend gelabelt. Durch Simulationen werden große Mengen detailliert gelabelter Daten für relevante Schienenschädigungen und Artefakte bereitgestellt. Aus diesen Daten werden wiederum virtuellen Prüffahrten erstellt, die für das Training und die Validierung der KI genutzt werden können. In unserem Poster stellen wir die Simulation dieser Ultraschall- und Wirbelstromprüfdaten vor. Dabei gehen wir im Detail auf die Themen CAD-Modellierung, Modellparameter, Simulationssoftware und Signalverarbeitung ein. Wir stellen ausgewählt die Simulation von Head Checks für Wirbelstromprüfverfahren und Bohrungsanrissen für Ultraschallprüfverfahren dar, da das Erkennen dieser Schädigungstypen bei der Schienenprüfung hohe Priorität innehat. Für die Verifikation der Simulationsergebnisse verweisen wir auf den ebenfalls eingereichten Vortrag „Verifikation von Ultraschall- und Wirbelstromsimulationen bei der Schienenprüfung“. Das Projekt AIFRI wird im Rahmen der Innovationsinitiative mFUND unter dem Förderkennzeichen 19FS2014 durch das Bundesministerium für Digitales und Verkehr gefördert. T2 - 13. Fachtagung ZfP im Eisenbahnwesen CY - Erfurt, Germany DA - 12.03.2024 KW - Simulation KW - Ultraschall KW - Wirbelstrom PY - 2024 AN - OPUS4-59719 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Farahbakhsh, Mahin A1 - Tscheuschner, Frank T1 - Fachinformationssystem Datenbank GEFAHRGUT N2 - Es werden die Anwendungen des Gefahrgutdatenpools der BAM aufgezeigt, der ein zentrales Informationssystem für den Transport gefährlicher Güter darstellt. T2 - Internationale Gefahrguttage Hamburg 2024 CY - Hamburg, Germany DA - 26.02.2024 KW - BAM-Liste KW - Datenbank GEFAHRGUT KW - Gefahrgut-Schnellinfo KW - Gefahrgutdatenpool KW - Gefahrguttransport KW - Informationssystem KW - Kurzinfo KW - Modul für Beförderungspapier KW - Modul für radioaktive Stoffe KW - BAM List KW - Dangerous Goods Database KW - Dangerous Goods Quickinfo KW - Radioactive Materials Module KW - Transport Documents Module PY - 2023 AN - OPUS4-59682 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ghasem Zadeh Khorasani, Media T1 - Federated SHM: a Novel Collaborative ML Approach to Overcome Data Scarcity and Data Privacy Concerns in StructuralHealth Monitoring N2 - The deployment of machine learning (ML) and deep learning (DL) in structural health monitoring (SHM) faces multiple challenges. Foremost among these is the insufficient availability of extensive high-quality data sets essential for robust training. Within SHM, high-quality data is defined by its accuracy, relevance, and fidelity in representing real-world structural scenarios (pristine as well as damaged). Although methods like data augmentation and creating synthetic data can add to datasets, they frequently sacrifice the authenticity and true representation of the data. Sharing real-world data encapsulating true structural and anomalous scenarios offers promise. However, entities are often reluctant to share raw data, given the potential extraction of sensitive information, leading to trust issues among collaborating entities. Our study introduces a novel methodology leveraging Federated Learning (FL) to navigate these challenges. Within the FL framework, models are trained in a decentralized manner across different entities, preserving data privacy. In our research, we simulated several scenarios and compared them to traditional local training methods. Employing guided wave (GW) datasets, we distributed the data among different parties (clients) using IID (independent, identically distributed or in other words, statistically identical) mini batches of dataset, as well as non-IID configurations. This approach mirrors real-world data distribution among varied entities, such as hydrogen refueling stations. In our methodology, the initial round involves individualized training for each client using their unique datasets . Subsequently, the model parameters are sent to the FL server, where they are averaged to construct a global model. In the second round, this global model is disseminated back to the clients to aid in predictive tasks. This iterative process continues for several rounds to reach convergence. Our findings distinctly highlight the advantages of FL over localized training, evidenced by a marked improvement in prediction accuracy . This research underscores the potential of FL in GW-based SHM, offering a remedy to similar challenges tied to data scarcity in other SHM approaches and paving the way for a new era of collaborative, data-centric monitoring systems. T2 - QI Digital Forum CY - Berlin, Germany DA - 10.10.2023 KW - Machine learning KW - Federated learning KW - Structural health monitoring KW - Artificial intelligence KW - Hydrogen safety KW - Data privacy PY - 2023 AN - OPUS4-59415 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schalau, Bernd T1 - Berechnungen mit der neuen VDI Richtlinie 3783 Blatt 1 N2 - Der zweite Gründruck der VDI Richtlinie 3783 Blatt 1 erfolgt in Kürze. Es wird der Inhalt der überarbeiteten Richtlinie vorgestellt und mit Beispielrechnungen Teilaspekte diskutiert. T2 - Sicherheitstechnischer Erfahrungsaustausch des LUBW CY - Karlsruhe, Germany DA - 16.04.2024 KW - Gasausbreitung PY - 2024 AN - OPUS4-59949 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohrke, Heiko T1 - Robotic Measurement System Concept for Greenhouse Gas Tomography in Wastewater Treatment Plants N2 - This paper introduces a conceptual framework for a greenhouse gas (GHG) measurement system designed for wastewater treatment plants (WWTPs). The emphasis is on accurate gas tomography measurements of emissions, crucial for national emission assessments. The proposed system is movable, semi-autonomous, and employs a combination of ground and air robots equipped with integral remote gas sensors and in-situ sensors. The proposed two/two configuration ensures comprehensive coverage of WWTPs, overcoming obstacles. The system concept lays the foundation for future implementation and evaluation, addressing the need for enhanced understanding of GHG emissions from WWTPs. T2 - 39th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Siófok, Hungary DA - 26.09.2023 KW - Remote Gas Sensing KW - Greenhouse Gas Emissions KW - Robot-based Emission Measurements KW - Semi-autonomous Sensor Networks KW - Gas Tomography PY - 2023 AN - OPUS4-58883 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. A1 - Kornev, R. A1 - Bulanov, A. A1 - Ermakov, A. T1 - Laser-Induced Dielectric Breakdown as a Novel Method for Obtaining Isotopically Enriched Nanoscale Substances N2 - The possibility of obtaining high-purity, isotopically modified and nanostructured elemental substances 29Si, 98Mo, and 100Mo, as well as 98Mox10By compounds from volatile halides under conditions of laser optical breakdown of a pulsed Nd:YAG laser is shown. Currently, research in the field of developing new methods for obtaining high-purity, isotopically modified and nanostructured substances is being actively conducted. Interest in Si and Mo combining these forms has noticeably increased. In nuclear medicine, 29Si-enriched nanoparticles can be used as contrast agents in magnetic resonance imaging (MRI), and 98Mo and 100Mo isotopes can be used to obtain the unstable 99mTc radioisotope. These applications do not require large amounts of isotopically modified Si and Mo. Their obtaining belongs to the problems of small chemistry. When obtaining isotopically modified Si and Mo, it is expedient to use their volatile fluorides, for which technologies of isotope enrichment and deep purification are well developed. These halides have high chemical and thermal stability; therefore, plasma-chemical methods based on the plasma of a pulsed discharge generated by laser breakdown can be promising for separating 29Si, 98Mo, and 100Mo from them. Laser breakdown in H2+Ar+SiF4 and H2+Ar+MoF6 mixtures in various stoichiometric ratios in the pressure range 30–760 Torr was carried out using a pulsed Nd:YAG laser. The pulse duration at a wavelength of 1064 nm was 15 ns, the repetition rate was 5 Hz. A pulse energy of 800 mJ was focused by a lens with a focal length of 5 cm. The energy density at the focus was 26 J/cm3 . It has been shown that when using a mixture based on 29SiF4, the sample contains a 29Si crystalline phase with an average grain size of 30–50 nm (Fig. 1a). When using a mixture based on 98MoF6, the sample contains a 98Mo crystalline phase with an average grain size of 70–100 nm (Fig. 1b). In this type of gas discharge, the possibility of forming superhard materials, isotopically modified molybdenum borides, was also studied. These substances in the form of nanosized particles have improved tribological properties. After ablation of metallic Mo in the H2 + BF3 mixture, the main phase was MoB2 in the form of a nanodispersed powder with an average grain size of 100 nm (Fig. 1c) [1]. A technique for modeling gas-dynamic and thermal conditions in a low-temperature chemically active plasma induced by laser breakdown is proposed. Using computational experiments, the features of gas mixture heating and the formation of nanoparticles in the LIBS reactor were studied T2 - 17the International Conference on Laser Applications in Life Sciences CY - Mugla, Turkey DA - 15.10.2023 KW - Laser induced plasma KW - Chemical vapor deposition KW - Isotopically enriched nanomaterials PY - 2023 AN - OPUS4-58888 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Cook, Jake Thomas T1 - Assessment of concrete bioreceptivity in algal biofilm green façade systems N2 - Algal biofilm façades are an alternative to traditional green façades which can help to improve biodiversity and air quality within cities. They present a low maintenance approach in which subaerial algae are grown directly on concrete substrates. The intrinsic bioreceptivity of the substrate is a critical factor in successful facade colonisation. Existing research has identified several environmental and material properties which influence concrete bioreceptivity, however a consensus has yet to be made on which properties are most influential and how the interaction between properties may promote algal biofilm growth under specific conditions. T2 - International Conference on Bio-Based Building Materials CY - Vienna, Austria DA - 21.06.2023 KW - Concrete KW - Façade KW - Bio-receptive KW - Extracellular polymeric substances KW - Fractional factorial PY - 2023 UR - https://www.rilem.net/agenda/5th-international-conference-on-bio-based-building-materials-1501 AN - OPUS4-58976 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Melzer, Michael T1 - The digitalization of force metrology N2 - The transfer of data for the metrological traceability of measurement results is currently taking place in the form of paper-based calibration certificates, mostly. Especially accredited metrology services providers are often bound to paper certificates by regulatory constrictions and sometimes lack of IT-infrastructure. This analog form of metrology data transfer, however, implies hands-on work, in particular for the certificate receiver, as its key values need to be translated into the device- and quality management (QM) system, manually. With thousands of certificates transferred from accredited calibration labs until the industrial regime, this binds a significant amount of human resources and is a well-known source of errors, thus constricting cost-effective and secure workflows. This contribution highlights the status of the advancing digital transformation in metrology, on the example of force calibration. Although this appealing initiative is to a large extend driven by German stakeholders, it currently evolves to extend across all Europe and far beyond. T2 - 39TH DANUBIA-ADRIA SYMPOSIUM ON ADVANCES IN EXPERIMENTAL MECHANICS CY - Siofok, Hungary DA - 26.09.2023 KW - Digitalisierung KW - Metrologische Rückführung KW - Digitaler Kalibrierschein PY - 2023 UR - https://das2023.hu/ AN - OPUS4-59027 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilling, Markus T1 - PMDco: Achieving High-Quality & Reliable FAIR Data N2 - Knowledge representation in the materials science and engineering (MSE) domain is a vast and multi-faceted challenge: Overlap, ambiguity, and inconsistency in terminology are common. Invariant and variant knowledge are difficult to align cross-domain. Generic top-level semantic terminology often is too abstract, while MSE domain terminology often is too specific. In this presentation, an approach how to maintain a comprehensive and intuitive MSE-centric terminology composing a mid-level ontology–the PMD core ontology (PMDco)–via MSE community-based curation procedures is shown. The PMDco is designed in direct support of the FAIR principles to address immediate needs of the global experts community and their requirements. The illustrated findings show how the PMDco bridges semantic gaps between high-level, MSE-specific, and other science domain semantics, how the PMDco lowers development and integration thresholds, and how to fuel it from real-world data sources ranging from manually conducted experiments and simulations as well as continuously automated industrial applications. T2 - Kupfer-Symposium CY - Jena, Germany DA - 29.11.2023 KW - Ontology KW - Semantic Web Technologies KW - Plattform MaterialDigital KW - PMDco PY - 2023 AN - OPUS4-59031 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hicke, Konstantin T1 - Approaching distributed ground motion sensing at high and low frequency ranges N2 - The phase and reflection spectrum of a standard distributed acoustic sensor based on an interferometer are used for fast and slow dynamic measurements, respectively, enabling the system to simultaneously measure various types of ground movement. T2 - 28th International Conference on Optical Fiber Sensors (OFS-28) CY - Hamamatsu, Japan DA - 20.11.2023 KW - Distributed acoustic sensing KW - Ground movement monitoring KW - Geomonitoring KW - Interferometer-based KW - DAS PY - 2023 AN - OPUS4-59097 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Waske, Anja A1 - Fähler, Sebastian T1 - Thermomagnetic generators with magnetocaloric materials for harvesting low grade waste heat N2 - To date, there are very few technologies available for the conversion of low-temperature waste heat into electricity. Thermomagnetic generators are one approach proposed more than a century ago. Such devices are based on a cyclic change of magnetization with temperature. This switches a magnetic flux and, according to Faraday’s law, induces a voltage. Here we give an overview on our research, covering both materials and systems. We demonstrate that guiding the magnetic flux with an appropriate topology of the magnetic circuit improves the performance of thermomagnetic generators by orders of magnitude. Through a combination of experiments and simulations, we show that a pretzel-like topology results in a sign reversal of the magnetic flux. This avoids the drawbacks of previous designs, namely, magnetic stray fields, hysteresis and complex geometries of the thermomagnetic material. Though magnetocaloric materials had been the first choice also for thermomagnetic generators, they require some different properties, which we illustrate with Ashby plots for materials selection. Experimentally we compare La-Fe-Co-Si and Gd plates in the same thermomagnetic generator. Furthermore, we discuss corrosion and deterioration under cyclic use is a severe problem occurring during operation. To amend this, composite plates using polymer as a matrix have been suggested previously. T2 - Dresden Days of Magnetocalorics CY - Dresden, Germany DA - 13.11.2023 KW - Thermomagnetic material KW - Waste heat recovery KW - Generator PY - 2023 AN - OPUS4-58865 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. A1 - Haratsu, T. A1 - Sakaue, M. A1 - Matsukura, H. A1 - Ishida, H. T1 - Toward Robust Robotic Gas Source Localization in Outdoor Environments: Testing Search Algorithms with Real Outdoor Wind Spectrum N2 - This poster reports an improved outdoor gas source localization algorithm, showing promising results under simulations with a realistic gas plume. In the scenario assumed in this work, an unmanned ground vehicle searches for the location of a gas source in an open outdoor field. The simulated gas plume in this work consists of frequent and large meandering as a real outdoor plume. The source location is estimated using gas and wind measurements obtained from sensors fixed on a mobile platform. When a gas puff is detected, its source is likely to be in the upwind direction. Particle filter-based algorithms have been proposed in previous work to estimate the most likely source location from multiple gas detection events. In this work, the particle weight update function has been modified by adopting a 2D Gaussian plume model, to improve the accuracy in estimating the likelihood of the source location. We have evaluated the performance of this algorithm combined with an estimation-based route planning algorithm. The simulator uses wind data recorded outdoors to calculate transport of gas puffs allowing a formation of a gas plume containing large meandering, due to real fluctuations of outdoor wind. Simulations of the improved particle filter with the estimation-based route planning algorithm have yielded more accurate, stable and time-efficient results than the pre-modified version. T2 - IEEE Sensors 2023 CY - Vienna, Austria DA - 29.10.2023 KW - Mobile robotic olfaction KW - Sensor signal processing KW - Gas source localization KW - Particle filter KW - Unmanned ground vehicle PY - 2023 AN - OPUS4-58780 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilling, Markus T1 - PMDco - Platform MaterialDigital Core Ontology: Achieving High-Quality & Reliable FAIR Data N2 - Knowledge representation in the materials science and engineering (MSE) domain is a vast and multi-faceted challenge: Overlap, ambiguity, and inconsistency in terminology are common. Invariant and variant knowledge are difficult to align cross-domain. Generic top-level semantic terminology often is too abstract, while MSE domain terminology often is too specific. In this poster presentation, an approach how to maintain a comprehensive and intuitive MSE-centric terminology composing a mid-level ontology–the PMD core ontology (PMDco)–via MSE community-based curation procedures is shown. The PMDco is designed in direct support of the FAIR principles to address immediate needs of the global experts community and their requirements. The illustrated findings show how the PMDco bridges semantic gaps between high-level, MSE-specific, and other science domain semantics, how the PMDco lowers development and integration thresholds, and how to fuel it from real-world data sources ranging from manually conducted experiments and simulations as well as continuously automated industrial applications. T2 - DVM Arbeitskreis Betriebsfestigkeit - Potenziale der Betriebsfestigkeit in Zeiten des technologischen und gesellschaftlichen Wandels CY - Munich, Germany DA - 11.10.2023 KW - Digitalization KW - Semantic Web Technologies KW - FAIR KW - Data Interoperability KW - PMD Core Ontology PY - 2023 AN - OPUS4-58602 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Katja A1 - Stahl, Michael T1 - Fachinformationssystem Datenbank GEFAHRGUT N2 - Es werden die Anwendungen des Gefahrgutdatenpools der BAM aufgezeigt, der ein zentrales Informationssystem für den Transport gefährlicher Güter darstellt. T2 - Stuttgarter Gefahrguttag CY - Stuttgart, Germany DA - 24.10.2023 KW - BAM-Liste KW - Datenbank GEFAHRGUT KW - Gefahrgut-Schnellinfo KW - Gefahrgutdatenpool KW - Gefahrguttransport KW - Informationssystem KW - Kurzinfo KW - Modul für Beförderungspapiere KW - Modul für radioaktive Stoffe KW - BAM List KW - Dangerous Goods Database KW - Dangerous Goods Quickinfo KW - Radioactive Materials Module KW - Transport Documents Module PY - 2023 AN - OPUS4-58710 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Katja A1 - Stahl, Michael T1 - Fachinformationssystem Datenbank GEFAHRGUT - Hilfe bei der Kennzeichnung der Umweltgefahr N2 - Möglichkeiten der Datenbank GEFAHRGUT und des Gefahrgutdatenservices die Notwendigkeit der Kennzeichnung der Umweltgefahr zu ermitteln. T2 - Stuttgarter Gefahrguttag CY - Stuttgart, Germany DA - 24.10.2023 KW - Datenbank KW - Fachinformationssystem KW - Gefahrgut KW - Kennzeichnung KW - Umweltgefahr KW - Dangerous goods KW - Database KW - Environmentally hazardous substance KW - Labelling KW - Specialised information system PY - 2023 AN - OPUS4-58711 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Franz-Georg T1 - Sorptionsverhalten von Antimon an Eisenoxidverbindungen N2 - Aschen und Schlacken aus der thermischen Abfallbehandlung enthalten eine Vielzahl von Schwermetallverbindungen. Für Antimon, Chrom, Kupfer, Molybdän und Vanadium werden in der neuen Ersatzbaustoffverordnung Eluatgrenzwerte für die Verwertung festgelegt. Aschen und Schlacken werden aus der Abfallverbrennungsanlage nass ausgetragen und vor einer Verwertung in der Regel mehrere Wochen gelagert. Dabei finden hydraulische Reaktionen statt und enthaltenes CaO wird zu einem Großteil in Calciumcarbonat umgewandelt. Während wässrige Eluate von frischen Aschen pH-Werte von 12 und höher aufweisen, sind die Eluate nach einigen Wochen weniger stark alkalisch. Die gemessenen Schwermetallkonzentrationen sind daher dann auch deutlich niedriger, mit Ausnahme von Antimon (Sb) und Vanadium (V). Hier steigen die Konzentration mit der Lagerungsdauer. Grund sind sinkende Konzentrationen von Ca-Ionen, die sonst zu einer Ausfällung von Antimonaten und Vanadaten führen. Zu hohe Eluatwerte von Sb und V können durch Sorption an Eisenoxidverbindungen gemindert werden. Als besonders wirkungsvoll hat sich Schwertmannit (Eisen-Oxyhydroxysulfat) erwiesen. Es entsteht durch Oxidation von pyrithaltigem Material durch Mikroorganismen und wird deshalb in Gebieten gefunden, in denen Braunkohle abgebaut wurde, z.B. in der Lausitz. Weitere untersuchte Eisenoxidverbindungen waren Hämatit und Schlämme aus der Abtrennung von Eisen und Mangan in Wasserwerken. T2 - 5. Internationales Bergbausymposium WISSYM 2023 CY - Dresden, Germany DA - 25.09.2023 KW - Rostasche KW - Sorption KW - Ersatzbaustoffe PY - 2023 AN - OPUS4-58702 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klewe, Tim T1 - LIBS-ConSort: Sensor-based sorting of construction and demolition waste N2 - In construction and demolition waste (CDW) recycling, the preference to date has been to apply simple but proven techniques to sort and process large quantities of construction rubble in a short time. This contrasts with the increasingly complex composite materials and structures in the mineral building materials industry. An automated, sensor-based sorting of these building materials could complement or replace the practice of manual sorting to improve processing speed, recycling rates, sorting quality, and prevailing health conditions for the executing staff. A joint project of partners from industry and research institutions approaches this task by investigating and testing the combination of laser-induced breakdown spectroscopy (LIBS) with near-infrared (NIR) spectroscopy and visual imaging. Joint processing of information (data fusion) is expected to significantly improve the sorting quality of CDW, and may enable the detection and separation of impurities such as SO3-cotaining building materials (gypsum, aerated concrete, etc.) We present current advances and results about the methodological development combining LIBS with NIR spectroscopy and visual imaging. Here, applying data fusion proves itself beneficial to improve recognition rates. In the future, a laboratory prototype will serve as a fully automated measurement setup to allow real-time classification of CDW on a conveyor belt. T2 - V. International Conference Progress of Recycling in the Built Environment (RILEM VPRE) CY - Weimar, Germany DA - 10.10.2023 KW - NDT KW - Circular economy KW - LIBS KW - Material classification KW - Data fusion PY - 2023 AN - OPUS4-58756 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogel, Christian T1 - Detection, quantification, and treatment of per- and polyfluoroalkyl substances (PFAS) in groundwater (DFEAT-PFAS) N2 - Over the past century, a range of synthetic compounds have been produced to improve humanity’s quality of life. These include pharmaceuticals, plastics, and other chemical compounds that possess properties making them potentially harmful when released to the environment (e.g., ecological and health impacts to humans and animals). Per- and polyfluoroalkyl substances (PFAS) are a large group of chemicals used in the formulations of thousands of consumer goods, including aqueous film-forming foams used to suppress aviation fires in training scenarios, non-stick cookware, fast-food wrappers, water-repellent fabrics, medical equipment, and plastic and leather products. Because of the recent regulations and restrictions on the use of long chain (≥C8) PFAS a significant shift in the industry towards short (C4-C7) and ultrashort (C1-C3) chain alternatives has been recognized the last years. Due to the high polarity and water solubility of ultrashort PFAS, the potential for bioaccumulation is low. However, the high persistence of ultrashort-chain PFAS will result in environmental accumulation, especially in aquatic environments, leading to potential risks for aquatic organisms and increased human external exposure through drinking water. Ultrashort PFAS like trifluoroacetic acid (TFA) are low to moderately toxic to a range of organisms. In addition, ultrashort PFAS can penetrate natural and anthropogenic barriers and eventually reach drinking water sources. Because common drinking water treatment techniques do not sufficiently remove them, they may reach human consumption. In the project we are focusing on detecting and removing PFAS, especially ultrashort-chain PFAS from contaminated groundwater. We are designing passive sampling devices, which can collect and monitor the temporal profile of PFAS species in groundwater. This will allow us to analyze PFAS contaminations in German and Israeli groundwater using state-of-the-art and novel analytical techniques and understand the extent of contamination. In addition to quantification, PFAS contaminated groundwater will be treated via a two-stage process to produce PFAS-free drinking water. As ultrashort-chain PFAS are difficult to analyze with the current target (LC-MS/MS) and sum parameter (AOF, EOF) analysis methods, we additionally using gas chromatography – mass spectrometry (GC-MS). Therefore, an analytical method based on GC-MS is in development to analyze the volatile ultrashort-chain PFAS (TFA, PFPrA, TFMS, PFEtS, PFPrS, trifluoroethanol, pentafluoropropanol and hexafluoro isopropanol) directly in contaminated groundwater samples with the headspace technique and in eluates of organic solvents from the developed passive sampler after direct injection. Moreover, a two-stages process is designed to increase the low concentrations found in groundwater using novel membranes processes such as closed-circuit reverse osmosis (CCRO) and mixed matrix composite nanofiltration membranes (MMCM). Next, the rejected streams containing higher concentrations of PFAS will be treated by coagulation, and the remaining PFAS adsorbed onto carbonaceous nanomaterials (CNMs). The DEFEAT-PFAS project will result in the development of novel tools to detect, quantify, and remove PFAS, especially ultrashort-chain PFAS from contaminated groundwater, and will acquire a new understanding of the extent of these contaminations. T2 - Dioxin Konferenz CY - Maastricht, Netherlands DA - 10.09.2023 KW - Ground water KW - Per- and Polyfluoroalkyl substances (PFAS) KW - Remediation PY - 2023 AN - OPUS4-58346 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weber, Mike T1 - Design of a Drop Test Target with Reproducible Properties for Konrad Prototype Testing N2 - Beginning in 1976 the former iron ore mine Konrad was geologically investigated concerning its suitability as a location for a German final repository for low and intermediate level waste. After a comprehensive licensing procedure it was approved and is now being prepared and equipped for the planned start of storage in 2027. At the end of the 1980s, the requirements for waste containers for storage in this repository were defined for the first time on the basis of an incident analysis of the on-site handling procedures, beginning with the unloading of the packages after the arrival at the site up to the final positioning in the underground storage galleries. A 5-meter drop onto the rock ground of the mine was identified as the covering case for high mechanical requirements (ABK II container class). In contrast to the 9-meter drop according to the IAEA Regulations for the Safe Transport of Radioactive Material, the 5-meter drop is performed onto a hard but not essentially unyielding target. The container is typically not protected by an impact limiter. The requirements for a potential test facility are described in the regulations for the Konrad repository. The mechanical strength of the target is defined as a concrete strength equivalent to the identified properties of the rock ground of the mine. Since 1991 BAM has consistently used precast reinforced concrete slabs as target for drop tests in the framework of licensing procedures as well as in research projects. While the original design fulfilled the requirement for the integrity of the concrete slab in most cases, it failed when drop tests onto an edge of a container were performed. A redesigned concrete slab developed in a research project and suggested as a reference target in 2009 has been successfully used in Konrad licensing procedures since then. The paper gives a brief overview of the historical development and it describes BAM’s efforts and approaches to continuously guarantee a concrete slab of defined quality and to provide a test setup for valid drop tests from the applicants and the authorities view. T2 - PATRAM 2022, 20th International Symposium on the Packaging and Transportation of Radioactive Materials CY - Juan-les-Pins, France DA - 11.06.2023 KW - Final repository Konrad KW - Drop test KW - Target PY - 2023 AN - OPUS4-58564 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Amano, Kofi Owusu Ansah T1 - Study of thermal runaway and gas emissions in NMC lithium-ion batteries: State of Charge Dependence Investigation N2 - Thermal runaway investigations were performed by subjecting single and double NMC pouch cells to thermal abuse condition inside an air-tight reactor vessel with an internal volume of 100 dm³. The study was divided into two series. The findings revealed the thermal runaway-induced explosion in the cells results in a rate of temperature increase greater than 10 K/s. The highest gaseous production was achieved at a range of 90 – 100% SOC and higher battery capacities 0.79 L/Wh (Series 1, 10 Ah cell) and 0.87 L/Wh (Series 2, 32 Ah cell). The investigation showed between 25 m³ and 84 m³ of explosible gas mixture could be released from electric vehicles of nominal useable electrical energy from 32 kWh up to 108 kWh at thermal runaway. It was also found that, the release of these explosible gases could undergo a secondary explosion. T2 - 4th IBSW 2023 – International Battery Safety Workshop CY - Ulm, Germany DA - 28.09.2023 KW - Consequneces KW - Electrical Energy Storage KW - Propagation; Gas release KW - Lithium-ion battery PY - 2023 AN - OPUS4-58543 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogel, Christian T1 - Combining DGT and 31P NMR spectroscopy to determine phosphorus species in soil N2 - The amount of plant-available phosphorus (P) in soil strongly influences the yield of plants in agriculture. Therefore, various simple chemical extraction methods have been developed to estimate the plant-available P pools in soil. More recently, several experiments with the DGT technique have shown that it has a much better correlation to plant-available P in soils than standard chemical extraction methods (e.g. calcium-acetate-lactate (CAL), Colwell, Olsen, water) when soils with different characteristics are considered. However, the DGT technique cannot give information on the plant-available P species in the soil. Therefore, we combined DGT with solution 31P nuclear magnetic resonance (NMR) spectroscopy. This was achieved by using a modified DGT device in which the diffusive layer had a larger pore size, the binding layer incorporated an adsorption material with a higher capacity, and the device had a larger exposure area. The spectroscopic investigation was undertaken after elution of the deployed DGT binding layer in a NaOH solution. Adsorption tests using solutions of known organic P compounds showed that a sufficient amount of these compounds could be adsorbed on the binding layer in order for them to be analyzed by solution 31P NMR spectroscopy. Furthermore, various intermediates of the hydrolysis of trimetaphosphate in soil could be also analyzed over time. T2 - DGT Konferenz CY - Paris, France DA - 11.10.2023 KW - Soil KW - Phosphorus KW - Plant-availability PY - 2023 AN - OPUS4-58574 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chaudhuri, Somsubhro T1 - Weather-dependent passive thermography and thermal simulation of in-service wind turbine blades N2 - The thermographic methods NDT division of BAM is aiming to develop a wind turbine blade (WTB) inspection tool using infrared thermographic scanning of operational wind turbines in the project EvalTherm. T2 - WindEurope Annual Event 2023 CY - Copenhagen, Denmark DA - 25.04.2023 KW - FEM KW - Thermografie KW - Wind turbine rotor blades KW - Windenergie anlage rotorblätte PY - 2023 AN - OPUS4-58275 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gupta, Kanhaiya T1 - Classification of pores from micro-XCT data of additively manufactured components prepared by laser powder bed fusion. N2 - Laser powder bed fusion (PBF-LB/M) is a metal-based additive manufacturing (AM) process that utilizes a laser to melt powder particles selectively and form the desired product through a layer-by-layer fabrication process. It allows access to a vast new design space and can produce parts with far greater geometrical complexity than traditional methods. However, PBF-LB/M induces inevitable microstructural defects, such as voids and pores, that can adversely affect the quality and performance of the manufactured components. Hence, knowledge of pore formation, types, and suppression is essential for successful future AM applications. This research investigates the formation of different types of pores and their quantification from X-ray micro-computed tomography images of a formerly reported sample. It also examines the influence of the volumetric energy density (VED) on the size, shape, and location of pores for 316L stainless steel parts produced by the PBF-LB/M process. T2 - FEMS EUROMAT 2023 CY - Frankfurt a. M., Germany DA - 03.09.2023 KW - Additive manufacturing KW - Laser Powder Bed Fusion KW - X-ray Computed Tomography PY - 2023 AN - OPUS4-58337 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rolle, Annette A1 - Neumeyer, Tino A1 - Ballheimer, Viktor A1 - Wille, Frank T1 - Investigations of Aged Metal Seals for Transport Package Safety Assessment N2 - Acceptable limits for activity release from transport casks for high-level radioactive material specified in the IAEA regulations must be kept by the integrity of cask body and the cask sealing system. BAM as the German competent authority for mechanical, thermal and containment assessment of packages liable for approval verifies the activity release compliance with the regulatory limits. One of the fundamental aspects in assessment is the specification of conservative package design leakage rates. To ensure the required package tightness for both, storage, and transport of the cask before and after storage usually metal seals of the Helicoflex® Type are used. Due to the long-term use the seal behavior is influenced by temperature and time. The mechanical and thermal loadings associated with the routine, normal and accident conditions of transport specified in the regulations can have a significant effect on the leak tightness of the sealing system. Whereas the safety for application of new, non- aged Helicoflex® seals is verified sufficiently, there are still technical data gaps concerning the efficiency of aged Helicoflex® seals. BAM performed experiments to learn more about the sealing efficiency of aged Helicoflex® seals with Aluminum and Silver outer jackets. The seals were compressed in test-flanges and for artificial ageing the complete flange systems were stored in an oven for several month at a high temperature. During the compression and decompression tests after the aging, load-deformation characteristics of the seals, and leakage rates were measured. With these tests a load situation was simulated, which can occur in the regulatory drop test of the cask: Under high impact loads the bolted lid can lift a little for a short moment, allowing a little movement of the seal, so that the contact area can change before compressing again. The poster presentation will show details about test conditions and first results. T2 - Interdisciplinary research symposium on the safety of nuclear disposal practices safeND2023 CY - Berlin, Germany DA - 13.09.2023 KW - Radioactive material KW - Sealing KW - Ageing KW - Leaktightnes PY - 2023 AN - OPUS4-58436 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stamm, Michael T1 - In situ characterisation of GFRP shell structures of wind turbine rotor blades under test using lock-in thermography N2 - The work shown demonstrates the possibility of measuring the load distribution of complex components such as rotor blades in cyclic tests using thermography. This is confirmed in the experiments presented by comparison with DIC measurements. The advantage of thermography is that it does not require any treatment of the test specimens in the setup shown and the measurement procedure can in principle be scaled to large components. In addition, compared to other imaging methods, the actual loads and not the deformation are measured. With a suitable data evaluation by means of Lockin analysis, small loads can be verified in a formative manner. Using the example of model repairs in shell test specimens made of sandwich glass fibre composite material, it is shown that inhomogeneous load distribution due to internal structures can be detected using thermography. T2 - WindEurope Annual Event 2023 CY - Copenhagen, Denmark DA - 25.04.2023 KW - Thermography KW - TSA PY - 2023 AN - OPUS4-58500 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stamm, Michael T1 - Infrared Thermography of wind turbine rotor blades: 3 use cases N2 - Thermography is a widely accepted non-invasive measurement method and is generally used in various areas of the life cycle of infrastructure and machinery. This includes design, production and maintenance. Thermography is particularly suitable for remote inspection of large areas that are difficult to reach. In this presentation, applications of thermography in the field of wind energy will be shown, touching on three explicit examples from rotor blade inspection. Experimental testing and validation: Thermography can measure and visualise the stress distribution on the surface during cyclic tests of rotor blades and rotor blade sections. The so-called thermoelastic stress analysis makes use of special evaluation algorithms (Lockin analysis) of the measurement data and the cyclic loading of components. An advantage of the measurement methods compared to other measurement methods such as strain gauges or digital image correlation is that it does not require any extra treatment or sensoring of the components. In the work shown here, repair methods are optimised and evaluated in cyclic tests on shell test specimens. Operation and maintenance: Rotor blades can be inspected from the ground during operation using passive thermography. Here, the integration of weather forecasts and conditions as input for simulations is crucial and will be demonstrated with some examples from the field. The goal of the ongoing research is to obtain detailed insights into the internal structure of the inspected rotor blades with individual measurements. A specially developed automated measuring system is able to measure a wind turbine (one-sided) within 5 minutes without impacting its operation. Environmental impact: In cases where less strict time and economic constraints apply than in the maintenance of rotor blades in operation, thermography can also be used to realise other inspection processes that take more time. Examples of this are quality control or the characterisation of rotor blades during dismantling. In the latter case, for example, it can be crucial to know which components such as foam, balsa, belt and spar are present in which parts of the blade when dismantling the rotor blades. Long-term measurements (~1-2 h) under suitable weather conditions can provide good insights into the inner structure of the rotor blades, both during disassembly and during quality control before installation. For this purpose, the sun is used as a heat source, which induces a thermal response of the rotor blades. The thermal behaviour of the rotor blades then allows conclusions to be drawn about the internal structure. T2 - EERA DeepWind conference 2023 CY - Trondheim, Norway DA - 18.01.2023 KW - Thermography KW - Wind turbine blade KW - Inspection PY - 2023 AN - OPUS4-58501 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ziegler, Mathias T1 - Aktueller Stand der Normung in der Thermografie N2 - Die Thermografie ist trotz ihrer ausgereiften wissenschaftlichen und technologischen Grundlagen ein noch relativ junges Mitglied in der Familie der zerstörungsfreien Prüfverfahren. Sie erschließt sich aufgrund einer Reihe von Vorzügen eine wachsende Anwendungsgemeinde. Für eine weitere Verbreitung insbesondere im industriellen Kontext spielen Normen, Standards und technische Regeln eine wichtige Rolle. In diesem Beitrag wird der aktuelle Stand der Normung in Deutschland vorgestellt. Wir zeigen, welche Normen und technischen Regeln es für die Thermografie in Deutschland und international gibt und wir wagen einen Blick in die Zukunft. Darüber hinaus lebt auch die Normierungsarbeit von der Beteiligung durch interessierte Kreise. Dies können industrielle und akademische Anwender*innen, Hersteller*innen von Geräten, Forschungseinrichtungen oder Dienstleistungsunternehmen sein. Sie können gern Ihre Bedarfe bezüglich Normierungsprojekten mitbringen und/oder direkt an die Autoren senden. T2 - DACH-Jahrestagung 2023 CY - Friedrichshafen, Germany DA - 15.05.2023 KW - Thermografie KW - Zerstörungsfreie Prüfung KW - Normung KW - Standardisierung PY - 2023 AN - OPUS4-59250 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Küttenbaum, Stefan T1 - ZfPStatik - Verbesserte Beurteilung von Bestandsbauwerken N2 - Vorgestellt werden - die Projektziele - das Konsortium - die allgemeine Vorgehensweise - und aktuelle Fortschritte im WIPANO-Projekt "ZfPStatik" (Stand: Februar 2023). T2 - 3. vierteljährliche Versammlung des Projektkonsortiums CY - Neubiberg, Germany DA - 07.02.2023 KW - Zerstörungsfreie Prüfung KW - Nachrechnung KW - Zuverlässigkeitsbewertung KW - Bestandsbauwerke PY - 2023 AN - OPUS4-57239 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kister, Alexander T1 - Multi-Agent Neural Rewriter for Vehicle Routing with Limited Disclosure of Costs N2 - We interpret solving the multi-vehicle routing problem as a team Markov game with partially observable costs. For a given set of customers to serve, the playing agents (vehicles) have the common goal to determine the team-optimal agent routes with minimal total cost. Each agent thereby observes only its own cost. Our multi-agent reinforcement learning approach, the so-called multi-agent Neural Rewriter, builds on the single-agent Neural Rewriter to solve the problem by iteratively rewriting solutions. Parallel agent action execution and partial observability require new rewriting rules for the game. We propose the introduction of a so-called pool in the system which serves as a collection point for unvisited nodes. It enables agents to act simultaneously and exchange nodes in a conflict-free manner. We realize limited disclosure of agent-specific costs by only sharing them during learning. During inference, each agents acts decentrally, solely based on its own cost. First empirical results on small problem sizes demonstrate that we reach a performance close to the employed OR-Tools benchmark which operates in the perfect cost information setting. T2 - Gamification and Multiagent Solutions Workshop (ICLR 2022) CY - Online meeting DA - 29.04.2022 KW - Reinforcement learning KW - Deep Learning KW - Vehicle Routing PY - 2022 AN - OPUS4-56687 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Melzer, Michael T1 - Flexible GMR sensors for novel flux leakage testing capabilities N2 - In order to detect small and hidden material defects or micro-cracks, weak and localized magnetic stray fields need to be detected and characterized on the magnetic surface. Current flux leakage sensor elements are rigid and rely on air gaps to detect stray fields several hundred micrometers above the surface. Furthermore, the increasing complexity of critical components, enabled by novel fabrication technologies, primarily additive manufacturing, poses a significant challenge to the available flux leakage testing technologies. The emergence of flexible magneto-electronics paves the way to a compliant form of magnetic sensors that, on one hand, are able to adapt to highly curved surfaces, allowing these measurements to be conducted on irregularly formed components, which are inaccessible for nowadays electromagnetic NDT equipment and, on the other hand, could enhance the detection limit for small magnetic stray fields, by allowing the magneto-sensitive elements to approximate the object’s surface until only a few µm, mediated by thin and flexible packaging. T2 - 38th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Poros, Greece DA - 20.09.2022 KW - Non-destructive testing KW - Flux leakage testing KW - Flexible sensorics KW - GMR Sensors KW - Flexible electronics PY - 2022 AN - OPUS4-56628 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nowatzky, Yannek T1 - Mistle: Metaproteomic index and spectral library search engine N2 - Introduction: With the introduction of accurate deep learning predictors, spectral matching applications might experience a renaissance in tandem mass spectrometry (MS/MS) driven proteomics. Deep learning models, e.g., Prosit, predict complete MS/MS spectra from peptide sequences and give the unprecedented ability to accurately predict mass spectra that may arise from any given proteome. However, the amount of spectral data is enormous when querying large search spaces, e.g., metaproteomes composed of many different species. Current spectral library search software, such as SpectraST, is not equipped to meet run time and memory constraints imposed by such large MS/MS databases, covering several millions of peptide spectrum predictions. Methods: Inspired by the fragment index data structure that had been introduced with MSFragger, we implement an efficient peak matching algorithm for computing spectral similarity between query and library spectra. Mistle (Metaproteomic index and spectral library search engine) uses index partitioning and SIMD (Single instruction, multiple data) intrinsics, which greatly improves speed and memory efficiency for searching large spectral libraries. Mistle is written in C++20 and highly parallelized. Results: We demonstrate the efficiency of Mistle on two predicted spectral libraries for the lab-assembled microbial communities 9MM and SIHUMIx. Compared to the spectral library search engine SpectraST, Mistle shows a >10-fold runtime improvement and is also faster than msSLASH, which uses locality-sensitive hashing. Although Mistle is slower than MSFragger, Mistle‘s memory footprint is an order of magnitude smaller. Furthermore, we find evidence that the spectral matching approach to predicted libraries identifies peptides with higher precision. Mistle detects peptides not found by database search via MSFragger and in turn uncovers unnoticed false discoveries among their matches. Conclusion: In this study, we show that predicted spectral libraries can enhance peptide identification for metaproteomics. Mistle provides the means to efficiently search large-scale spectral libraries, highlighted for the microbiota 9MM and SIHUMIx. T2 - HUPO2022 CY - Cancun, Mexico DA - 04.12.2022 KW - Proteomics KW - Mass spectrometry KW - Algorithms KW - Metaproteomics PY - 2022 AN - OPUS4-56695 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ermilova, Elena T1 - Modell based ellipsometry standards for different application cases and their application for real non-ideal systems N2 - Ellipsometry enables the investigation of material properties over a broad spectral range. As a fast and non-destructive method, it is widely used in industry for quality assurance. Despite the wide application of ellipsometry and its high industrial relevance there are some material-specific standards and there have been no generally accepted standards dealing with model validation and measurement uncertainties. The first German standard DIN50989-1: 2018 Ellipsometry – Part1: Principles (currently international standard ISO 23131: 2021) marks the beginning of a 6-part standard series for ellipsometry, which was developed under consideration of GUM. T2 - International Conference on Spectroscopic Ellipsometry (ICSE-9) CY - Beijing, China DA - 22.05.2022 KW - Spectroscopic and imaging ellipsometry KW - Standards KW - Uncertainties PY - 2022 AN - OPUS4-56698 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ermilova, Elena T1 - Hybrid optical measurement technique for detection of defects in epitaxially grown 4H-SiC layers N2 - Recent developments in power electronics require the use of new wide bandgap compound semiconductors. Silicon carbide (SiC) is one of the most promising materials for power electronics due to its outstanding properties and commercial availability. Some types of defects in the SiC substrates or homoepitaxial SiC layers can affect the performance of electronic devices in a serious manner or make its operation even impossible. Optical methods such as imaging ellipsometry (IE) and white light interference microscopy (WLIM) were applied for fast and non-contact investigation of defects in the epitaxially grown 12 µm 4H-SiC layers on 4H- SiC substrates. T2 - EOS Annual Meeting (EOSAM 2022) CY - Porto, Portugal DA - 12.09.2022 KW - Imaging ellipsometry KW - White light interference microscopy KW - Epitaxially grown 4H-SiC layers KW - Wide bandgap compound semiconductors PY - 2022 AN - OPUS4-56705 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schade, U. T1 - Etalon effects in THz film measurements N2 - Etalon features in transmittance spectra of films arise due to the coherent superposition of waves caused by reflections multiple times at the inner film boundaries. The fringe maxima occur at i𝜆 = 2nd cos 𝜑 with i - being an integer, 𝜆 - the wavelength, d - the film thickness, 𝜑 - the angle of incidence in respect to the film normal and n - the refractive index of the film. It is obvious that such features can hinder the interpretation of absorption bands when fringe amplitude and period are in the same range as the expected bands. This poster discusses the suitability of two optical methods for the THz spectral range applied to Fourier Transform Spectroscopy. T2 - 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) CY - Buffalo, NY, USA DA - 08.11.2020 KW - THz radiation KW - Total transmittance reflection technique PY - 2020 AN - OPUS4-56945 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kazlagić, Anera A1 - Rosner, M. A1 - Vogl, Jochen T1 - Investigating the differences between MC-ICP-MS and MC-TIMS using conventional 87Sr/86Sr isotope ratios in limestone and slate reference materials N2 - The Federal Institute for Materials Research and Testing (BAM) organised an interlaboratory comparison (ILC) for the characterisation of 87Sr/86Sr isotope ratios in limestone (IAG/CGL ML-3) and Penrhyn slate (IAG OU-6) reference materials by applying the conventional method for 87Sr/86Sr isotope ratios. Samples were sent to thirteen analytical laboratories . Since both samples are powdered, rock materials, dissolution of the sample and Sr isolation via ion exchange chromatography were mandatory. This was done using acid, microwave/acid, bomb/acid digestion or borate fusion and subsequent isolation of Sr by means of commercially available ion exchange resins. In this study, we present and discuss the potential effects that differences between laboratories, and between two instrumental measurement techniques (i.e., MC-ICP-MS and MC-TIMS), may have upon the dispersion of measurement results of the 87Sr/86Sr isotope ratio in the two aforementioned reference materials. We used a statistical mixed effects model to assess the potential effects of both the laboratory and the measurement technique. Consensus values for both materials and associated standard uncertainties {(IAG/CGL ML-3 (0.708245±0.000004) mol/mol; IAG OU-6 (0.729769±0.000008) mol/mol} were estimated by fitting a linear, Gaussian mixed effects model (Pinheiro and Bates 2000) using the R function “lmer” defined in package “lme4”. The statistical results showed that there is no significant effect attributable to differences between instrumental techniques when both materials are considered together, or separately. The p-value of the test of significance of the measurement technique effect is greater than 0.54. For both materials there were statistically significant effects attributable to differences between laboratories when the measurement results for both materials were considered together and separately. This effect is less than 0.00004 in absolute value. However, for neither material did consideration or disregard for such differences induce significant changes in the estimate of the consensus value for the 87Sr/86Sr isotope ratio. Therefore, the effects attributable to differences between instrumental techniques or between laboratories can safely be disregarded when computing the best estimate for the true value of 87Sr/86Sr isotope ratio in these materials, by the community of expert laboratories represented in this study. T2 - GeoAnalysis 2022 CY - Freiberg, Germany DA - 06.08.2022 KW - Isotope ratio KW - Conventional isotope ratio KW - ILC KW - Traceability KW - Uncertainty KW - Isotope reference materials PY - 2022 AN - OPUS4-56848 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, M. A1 - Schlingmann, T. A1 - Schmidt, J. A1 - Bettge, Dirk A1 - Hilgenberg, Kai A1 - Binder, M. A1 - Klöden, B. T1 - A Round Robin Test To Investigate The Printing Quality Of PBF LB/M Processed AlSi10Mg N2 - When it comes to higher accuracies, new technologies and real applications in additive manufacturing, there is one topic which cannot be avoided: The material response on the chosen processing parameters and its agreement and correspondence with literature data of the wrought material grade counterpart. In industrial Additive Manufacturing (AM) standards in terms of printing parameters, protection gas atmospheres or powder handling instructions are not obligatory. Therefore, the question must be answered whether the AM process is reproducible and reliable over different printing companies. This was the motivation to realize a round robin test between 8 European printing companies and academic partners. The consortium had printed and tested fatigue and tensile testing bars under plant-specific conditions. A commonly used cast aluminum alloy, AlSi10Mg, was chosen as test material for the PBF-LB/M process. Differences of the results between the partners and the scatter itself were discussed in detail. T2 - World PM2022 CY - Lyon, France DA - 09.10.2022 KW - Additive manufacturing KW - AlSi10Mg KW - Laser powder bed fusion KW - Round robin KW - Reproducibility PY - 2022 AN - OPUS4-56303 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Johann, Sergej T1 - Multi-sensor system for long-term monitoring with WiFi and LoRaWAN technology N2 - In many cases, science falls back on self-developed prototype systems, which are used and developed for the measurement and execution of the tasks. About 80 % of the development is based on the same hardware design, which is used in only one application scenario and then discarded. For the most part, there are also uncalibrated sensors, since it is costly to calibrate a complicated sensor measurement system or the entire measurement chain since access to the sensor systems is not always available. This paper describes a conceptual design to implement a versatile sensor system with the motivation to fuse the data recording and data reception, which can cover large areas with the help of LoRaWAN (Long Range Wide Area Network) technology [1, 2]. To overcome disadvantages of LoRaWAN, namely the slow data rates, the proposed sensor system can also cover smaller areas with the widespread WiFi technology. An enormous advantage over individual complete systems in the form of a prototype, is the rapid expansion, uncomplicated calibration of the individual sensors and the ecological relief. A modular design is used, where individual stacks with sensors and peripherals can be added separately. The stacks are standalone low-power systems and can be calibrated, maintained, and replaced separately and do not require the entire measurement chain. The measured and sent values are stored locally on the main stack and sent to the data collector (gateway) and evaluated by means of the automated selection between WiFi and LoRaWAN. T2 - 38th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Athens, Greece DA - 20.09.2022 KW - Multisensor system KW - LoRaWAN KW - WiFi KW - Long term monitoring PY - 2022 AN - OPUS4-56464 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rieck, Arielle A1 - Schwarz, Irina T1 - Valorization of CO2 by electrocatalytic reduction coupled to acetogens via multiple electron carriers (Ecat-acetogens) N2 - For the realization of a sustainable energy economy, it is of great importance to develop CO2 -neutral methods producing multi-carbon organic chemicals used as feedstock in the chemical industry as well as carbon-neutral fuels. A promising method to alleviate the greenhouse effect and thereby forming value-added chemicals or syngas as an energy carrier, is through the electrochemical CO2 reduction reaction (CO2RR). In this work, a bioelectrotechnological approach is developed, in which the CO2RR reaction products (CO and H2) are directly fed to bacteria (acetogens), who use them as “reduction equivalents” to further metabolize CO2 to valuable carbon compounds. Therefore, a bio-electrochemical system consisting of a bioreactor coupled to a CO2 electrolysis cell will be established. Currently, scarce catalysts such as Ag and Au are used as for the CO2RR which may hamper the use of decentral CO2 conversion technology for cost reasons. The technological viability of the bacteria-assisted electrolysis depends on the usage of efficient, biocompatible, and selective electrocatalysts prepared from inexpensive precursors. Porous transition metal and nitrogen co-doped carbons (M-N-Cs) have emerged as precious-metal free electrocatalysts for the direct electrochemical reduction of CO2 into CO and are excellent candidates for scale-up and deployment in technological applications. Furthermore, Co/Ni/Zn functioning as the catalytically active sites will be used, as they are expected to depict non-bactericidal properties in contrast to Cu and Ag catalysts. The non-bactericidal property could e.g., allow for application within the hybrid device (bio-electrochemical system), without the need to separate bacteria and cathode catalyst. The MNCs with the most promising electrocatalytic activity and selectivity will be evaluated in abiotic conditions in the hybrid bio-electrochemical reactor system. T2 - DFG Summer School Workshop CY - Hamburg, Germany DA - 01.09.2022 KW - CO2 Reduktion KW - MNC catalyst KW - Clostridium ragsdalei PY - 2022 AN - OPUS4-56619 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - EDC-WFD: A project to deliver reliable measurements for better monitoring survey and risks assessments. N2 - Monitoring programs should generate high-quality data on the concentrations of substances and other pollutants in the aquatic environment to enable reliable risk assessment. Furthermore, the need for comparability over space and time is critical for analysis of trends and evaluation of restoration of natural environment. Additionally, research work and exercises at the European level have highlighted that reliable measurements of estrogenic substances at the PNEC level are still challenging to achieve. The project EDC-WFD Metrology for monitoring endocrine disrupting compounds under the EU Water Framework Directive aims to develop traceable analytical methods for determining endocrine disrupting compounds and their effects, with a specific focus on three estrogens of the first watch list (17-beta-estradiol (17βE2), 17-alpha-ethinylestradiol (EE2), and estrone (E1)). Estrogens 17-alpha-estradiol (17E2) and estriol (E3) will be included to demonstrate the reliability of the developed methods and to support the requirements of Directive 2013/39/EC, Directive 2009/90/EC and Commission Implementation Decision (EU) 2018/840, hence improving the comparability and compatibility of measurement results within Europe. During the EDC-WFD project four selected effect-based methods (EBM) will be deeply investigated in order to improve their rationale use and their support in water quality assessment. In particular, the EBM sensitivity, specificity and accuracy on reference materials with single or mixture solutions of the five substances at a concentration of EQS values will be explored. This contribution will present the objectives and methods applied within the EDC-WFD project. T2 - EuChemS CY - Lisbon, Portugal DA - 29.08.2022 KW - WFD KW - Estrogens KW - Whole water samples KW - EQS PY - 2022 AN - OPUS4-57096 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - A method for monitoring estrogens in whole surface waters by GC-MS/MS N2 - Natural and synthetic estrogens are key endocrine-disrupting chemicals. Despite occurring at ultra-trace levels (below ng L-1), it is believed that they are contributing to an increase in feminized fish and other endocrine disruptive effects, and hence, their inclusion in the Watch list was not unexpected. One of the main sources ofestrogens to surface waters is wastewater effluent. Once in surface waters, they can partition into different compartments, i.e., water and suspended particulate matter. For this reason, there is an urgent need for a methodology to monitor estrogen levels below the environmental quality standards (EQS) set by the Water Framework Directive requirements. In this study, a precise and accurate gas chromatography-mass spectrometry method (GC-MS/MS) for the analysis of estrone (E1), 17β-estradiol (17β-E2), 17α-estradiol (17α- E2), 17-alpha-ethinylestradiol (EE2), and estriol (E3) in whole water samples with ng L-1 limit of quantification (LOQ) was developed and validated in accordance with CEN/TS 16800:2020 guidelines. T2 - IMSC 2022 CY - Maastricht, Netherlands DA - 27.08.2022 KW - EDC KW - WFD KW - GC-MS PY - 2022 AN - OPUS4-57097 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Farahbakhsh, Mahin A1 - Tscheuschner, Frank T1 - Fachinformationssystem Datenbank GEFAHRGUT N2 - Es werden die Anwendungen des Gefahrgutdatenpools der BAM aufgezeigt, der ein zentrales Informationssystem für den Transport gefährlicher Güter darstellt. T2 - Internationale Gefahrgut-Tage Hamburg 2023 CY - Hamburg, Germany DA - 27.02.2023 KW - BAM-Liste KW - Datenbank GEFAHRGUT KW - Gefahrgut-Schnellinfo KW - Gefahrgutdatenpool KW - Gefahrguttransport KW - Informationssystem KW - Kurzinfo KW - Modul für Beförderungspapier KW - Modul für radioaktive Stoffe KW - BAM List KW - Dangerous Goods Database KW - Dangerous Goods Quickinfo KW - Radioactive Materials Module KW - Transport Documents Module PY - 2023 AN - OPUS4-57114 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Farahbakhsh, Mahin A1 - Tscheuschner, Frank T1 - Fachinformationssystem Datenbank GEFAHRGUT - Hilfe bei der Kennzeichnung der Umweltgefahr N2 - Möglichkeiten der Datenbank GEFAHRGUT und des Gefahrgutdatenservices die Notwendigkeit der Kennzeichnung der Umweltgefahr zu ermitteln T2 - Internationale Gefahrgut-Tage Hamburg 2023 CY - Hamburg, Germany DA - 27.02.2023 KW - Datenbank KW - Fachinformationssystem KW - Gefahrgut KW - Kennzeichnung KW - Umweltgefahr KW - Dangerous goods KW - Database KW - Environmentally hazardous substance KW - Labelling KW - Specialised information system PY - 2023 AN - OPUS4-57115 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmitt, M. T1 - Nationale, europäische und internationale Normung in der zerstörungsfreien Prüfung N2 - Normung und Standardisierung in der zerstörungsfreien Prüfung finden auf nationaler, europäischer und internationaler Ebene statt. Die Übernahme von Leitungsfunktionen in diesen Gremien erzeugt die Möglichkeit der Steuerung von Themen und Inhalte der relevanten Normen. Das persönliche Engagement der Fachexpert*innen in den nationalen Gremien und den europäischen und internationalen Arbeitsgruppen ist ein zusätzlicher Faktor für die inhaltliche Korrektheit und die erwünschte inhaltliche Ausrichtung der Norm. Denn wer nicht normt wird genormt und muss letztlich Regeln verwenden, die andere entsprechend ihrer eigenen Interessen gestalten. Voraussetzung für die Teilnahme in europäischen und internationalen Normungsgremien ist die Mitwirkung in den entsprechenden DIN-Spiegelgremien, welche die europäischen (CEN) und internationalen (ISO) Aktivitäten spiegeln und die Fachexperten für die Mitarbeit autorisieren. Auf internationaler Ebene findet die Normungsarbeit in den technischen Komitees ISO/TC 135 “Non-destructive testing” und ISO/TC 44/SC 5 “Testing and inspection of welds” und ihren Arbeitsgruppen statt. Das europäische Pendant ist das CEN/TC 138 “Zerstörungsfreie Prüfverfahren” mit seinen Arbeitsgremien. Die DIN-Spiegelgremien sind für die deutsche Mitarbeit in diesen Gremien und die inhaltliche Bewertung der Norm-Entwürfe zuständig. T2 - DGZfP Jahrestagung 2024 CY - Osnabrück, Germany DA - 05.05.2024 KW - Normung KW - Zerstörungsfreie Prüfung PY - 2024 AN - OPUS4-60073 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brunner-Schwer, Christian T1 - How innovative welding technology can speed up the wind tower manufacturing process eightfold N2 - In the wind industry, a great deal of welding is required for the manufacture of foundation structures, floating platforms and towers. The poster illustrates how this welding process can be realised much more efficiently with the help of electromagnetic weld pool backing. T2 - Wind Europe Annual Event 2024 CY - Bilbao, Spain DA - 20.03.2024 KW - Schweißen KW - Laserschweißen KW - Windeneergie PY - 2024 AN - OPUS4-60604 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naster, Maximilian T1 - Development of a Hydrogen Fire Test Rig for Thermal Testing N2 - A new hydrogen-based test rig is being developed for a feasibility study on the use of hydrogen as an energy source for thermal testing in accordance with the IAEA SSR-6 guidelines for transport packages containing radioactive materials. The test rig will be capable of combusting hydrogen for a wide range of different burner geometries, mass flows and if necessary hydrogen blends. As this type of fire test according to the IAEA boundary conditions (SSR-6 & SSG-26) does not yet exist, a large number of preliminary investigations, safety assessments and calculations must be carried out in order to develop a viable concept for hydrogen fires. T2 - 1st JF BMUV Förderprogramm CY - Berlin, Germany DA - 22.05.2024 KW - IAEA Fire KW - H2 Fire KW - IAEA Regulations PY - 2024 AN - OPUS4-60555 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chacon Castro, Jose Pablo A1 - Schneider, Rika A1 - Greiner, Andreas A1 - Schartel, Bernhard T1 - Flame retardant poly(limonene carbonate): material innovation as a game changer N2 - The global plastic industry relies on fossil-based materials, presenting environmental challenges. A sustainable polymer namely poly(limonene carbonate) (PLimC), made of limonene and CO2 as two monomers from non-food sources, shows advances in various applications where additives such as flame retardants (FRs) are crucial to comply with fire safety measures. The variety of FRs is wide, and therefore the approach involved conducting a comparative study of four different halogen-free flame retardant systems that are conventionally used in polycarbonates and polyolefins to understand which FR enhances the flame resistance of PLimC most effectively. The primary task of the project is to conduct experimental evaluations to analyze the thermal properties, flammability, and fire behavior of each system. This data will offer valuable insights towards the advancement of safer and more sustainable materials. T2 - Polymers for Sustainable Future 2024 CY - Prague, Czech Republic DA - 24.06.2024 KW - Poly(limonene carbonate) KW - Flame retardancy KW - Fire science PY - 2024 AN - OPUS4-60556 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naster, Maximilian T1 - Development of a Hydrogen Fire Test Rig for Thermal Testing N2 - A new hydrogen-based test rig is being developed for a feasibility study on the use of hydrogen as an energy source for thermal testing in accordance with the IAEA SSR-6 guidelines for transport packages containing radioactive materials. The test rig will be capable of combusting hydrogen for a wide range of different burner geometries, mass flows and if necessary hydrogen blends. As this type of fire test according to the IAEA boundary conditions (SSR-6 & SSG-26) does not yet exist, a large number of preliminary investigations, safety assessments and calculations must be carried out in order to develop a viable concept for hydrogen fires. T2 - Technical Exchange IRSN – BAM Transport & Storage of Packages for Radioactive Material CY - Berlin, Germany DA - 04.06.2024 KW - IAEA Fire KW - H2 Fire KW - IAEA Regulations PY - 2024 AN - OPUS4-60554 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lu, Xin T1 - Configuration simplification and data reduction in a DAS system for monitoring large infrastructures N2 - The distributed acoustic sensor based on an imbalanced Mach-Zehnder interferometer with a 3×3 coupler is simplified by using a balanced detector instead of three identical photodetectors. The obtained data is reduced by two third accordingly. T2 - Optica Sensing Congress 2024 CY - Toulouse, France DA - 15.07.2024 KW - Distributed fiber sensing KW - System simplification KW - Data reduction PY - 2024 AN - OPUS4-60841 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sunder, Sruthi A1 - Jauregui Rozo, Maria A1 - Ruckdäschel, Holger A1 - Schartel, Bernhard T1 - Adapting intumescent/low-melting glass flame-retardant formulations for transfer to glass-fiber-reinforced composites and postfiremechanical analysis N2 - The residual post-fire mechanical properties of fiber-reinforced epoxy (EP) composites are influenced by their fire residues after burning. This study uses intumescent/low-melting glass flame retardants (FRs) to tailor fire residues in epoxy resin. Processibility of prepregs, and their quality are analysed for transfer of the flame-retardant epoxy resins to layered glass-fiber reinforced composites (GFRCs). Minimal effects were found on the pre-fire flexural strengths of the composites due to low loading of the FRs. However, when transferred to GFRCS, the fire residues diminish significantly. Process, testing, and material adaptations are required to improve theoretical and experimental estimations of the post-fire mechanics of the composites. T2 - SAMPE Europe Conference 2023 Madrid - Spain CY - Madrid, Spain DA - 03.10.2023 KW - Fire residue KW - Prepregs KW - Mechanics PY - 2023 AN - OPUS4-60789 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jauregui Rozo, Maria A1 - Sunder, Sruthi A1 - Ruckdäschel, Holger A1 - Schartel, Bernhard T1 - Weaving Through Fire And Force: Fire Behavior and Modes of Action between Epoxy Resin and Glass Fiber Composites N2 - This project aims to investigate the fire behavior, fire stability, and modes of action in flame retardancy of phosphorus-based flame-retardant polymeric materials in fiber-reinforced composites and compare them to epoxy resins. T2 - BASF International Summer Course 2024 CY - Ludwigshafen, Germany DA - 04.08.2024 KW - Flame retardants KW - Fire behavior KW - Fire stability PY - 2024 AN - OPUS4-60790 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schuehle, Florian T1 - Quality assured uptake rates for passive sampling of indoor air VOCs N2 - Generation of experimental uptake rates (UR) for > 70 VOCs (7d /100 μg m-3) Application in German Environmental Survey – VOC exposure assessment Assurance of transparency concerning UR generation and uncertainty creates basis for decision making and comparability of measurement results. Exemplarily the uncertainty u(UR) of toluene UR was modelled and determined statistically with own laboratory data (relative standard deviation of actively sampled test gas atmosphere – RSDa and n = 5 exposed passive samplers – RSDp) in line with EN 838 as well as from variation of literature UR – RSD UR,lit. T2 - Airmon 2022, 10th International Symposium on modern principles of air monitoring and biomonitoring CY - Bristol, UK DA - 06.11.2022 KW - IAQ KW - VOC KW - Diffusive sampling KW - Uptake rate PY - 2022 AN - OPUS4-56583 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Portesi, C. T1 - Creation of a European Metrology Network for Safe and Sustainable Food N2 - Safe food is a prerequisite for good human health, however currently almost one in ten people in the world fall ill after eating contaminated food. National food safety authorities need to be able to manage food safety risks along the entire food chain. The Official Controls Regulation (EU) 2017/625 was put in place to ensure that food and feed law stipulates the need for validated analytical methods. However, whilst method development for food control and proficiency testing are well established by European Union Reference Laboratories and National Reference Laboratories, validation of the measurements involved, certified reference materials and internationally recognised calibration and measurement capabilities are currently often (?) lacking. This may erode trust in the accuracy of the measurements. This poster presents Food-MetNet, a coordinated preparatory initiative to establish the European Metrology Network for Safe and Sustainable Food, recently approved by the European Association of National Metrology Institutes (EURAMET). Food-MetNet aims to establish an ongoing dialogue between the metrology community, reference laboratories and regulatory bodies, in order to (i) identify stakeholders’ needs, (ii) develop a sustainable knowledge-sharing programme and web-based platform for stakeholders and (iii) develop roadmaps and a strategic research agenda. Improved access to more reliable and accurate food safety measurements will enable reference laboratories to more confidently and effectively compare their measurement results and support accreditation. This is particularly important where national food safety authorities need to assess potential new contaminants, novel food ingredients and newly emerging food risks, and new measurements methods may be required as well as input into new documentary standards. The activities for sustainable food intend to boost the activity within the "EU green deal framework" to reduce food waste and losses, and the development of standards and methods that allow for the reuse of food waste. The support to new business opportunities and innovation will allow increasing the market competitiveness of EU food industries and the valorisation of waste by reducing environmental impacts. T2 - 10th International Symposium on RECENT ADVANCES IN FOOD ANALYSIS CY - Prague, Czech Republic DA - 06.09.2022 KW - Food KW - Analysis KW - EMN KW - Metrology KW - Network PY - 2022 AN - OPUS4-56133 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grohmann, Maria T1 - Application of Elastic Reverse Time Migration to Ultrasonic Echo Data in Civil Engineering N2 - The ultrasonic echo technique is widely used in non-destructive testing for investigation and damage analysis of concrete constructions. Important applications include thickness measurements, geometry determination, the localization and characterization of built-in components as well as the detection of quality issues (cracks, honeycombing, low concrete strength). To improve ultrasonic data imaging of complicated structures in concrete, we transferred a seismic migration technique, the Reverse Time Migration (RTM), to non-destructive testing in civil engineering. In a preliminary study, we tested a 2D acoustic RTM algorithm on measured ultrasonic echo data acquired at a concrete foundation slab. Compared to the conventional used synthetic aperture focusing technique algorithms (SAFT) for ultrasonic data reconstruction, our acoustic RTM results showed a significant improvement in imaging the interior structure of the concrete slab. Vertical reflectors were reconstructed which was not possible by traditional imaging. In contrast to SAFT, RTM is a wavefield-continuation method in time and uses the full wave equation. RTM is, thus, able to include multiple reflections and to handle multi-pathing as well as many other complex situations. As a drawback RTM requires extensive computing power and memory capacity. Nevertheless, due to progresses in parallel processing and other computational technologies RTM has become appealing for the application in the field of non-destructive testing. An RTM algorithm, which uses the full elastic wave equation instead of the full acoustic one (as applied in our preliminary work) has the potential to optimize the imaging results even further. This is due to the fact, that our ultrasonic measurement data are generated by exciting elastic waves. Thus, in a first step, two 2D elastic RTM algorithms were tested on synthetic ultrasonic echo data generated with a concrete model consisting of several steps and circular shaped air inclusions. In addition, two imaging conditions were evaluated to reduce migration artifacts. Our synthetic elastic RTM results showed an enhancement in imaging the features inside the test model compared to acoustic RTM and SAFT. In a second step, we acquired ultrasonic measurement data at a concrete test specimen consisting of three steps and four air filled tendon ducts. The evaluation of the real data with our elastic RTM code was also successful and the reconstruction of the geometries of the steps and tendon ducts could be improved. With our study we have shown that elastic RTM is a step forward for ultrasonic testing in civil engineering. T2 - NDT-CE 2022 CY - Zurich, Switzerland DA - 16.08.2022 KW - Ultrasonic Echo Technique KW - Reverse Time Migration KW - Synthetic Aperture Focusing Technique PY - 2022 AN - OPUS4-56113 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oelze, Marcus T1 - Metrology for the recycling of Technology Critical Elements to support Europe´s circular economy agenda N2 - Problem: Lack of knowledge about TCE stocks and flows in urban mines. TCE analysis is hindered by extreme heterogeneity of the waste and a lack of suitable CRMs. Analytical procedures providing SI traceable results are not available. Solution: To enable comparability of analytical results and thus finally allow the improved recycling procedures, sampling strategies, analytical procedures, enabling SI traceable values and CRMs for TCE to be developed. T2 - ICP-MS Anwendertreffen CY - Leoben, Austria DA - 05.09.2022 KW - Reference materials KW - Circular economy PY - 2022 AN - OPUS4-56118 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epperlein, Martin T1 - QI-Digital - Qualitätssicherung für die Additive Fertigung N2 - Für die konventionelle Fertigung hat sich das bestehende System der Qualitätsinfrastruktur (QI) bewährt. Die additive Fertigung vergrößert den gestalterischen Spielraum von möglichen Bauteilgeometrien und Prozessfehlern jedoch erheblich. Hier gerät die QI an ihre Grenzen, sodass die Fertigung und Zulassung sicherheits-relevanter Bauteile sehr zeit- und kostenintensive Versuche erfordern. Eine moderne digitale QI erlaubt eine effizientere Qualitätssicherung für additiv gefertigte Bauteile. Dies erfordert eine durchgängig digitale Abbildung des physischen Materialflusses. T2 - QI-Forum CY - Berlin, Germany DA - 11.10.2022 KW - Additive Fertigung KW - Qualitätssicherung KW - Digitalisierung PY - 2022 AN - OPUS4-56382 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Imani, A. A1 - Niederleithinger, Ernst T1 - Nondestructive Evaluation of Bridges without Structural Plans for Load Rating Purposes N2 - According to the NBI database, more than 21,000 in-service U.S. bridges lack sufficient structural documentation necessary for analytical load rating. Among these are a significant proportion of older prestressed concrete bridges. Given the lack of documentation on the reinforcing layout, such structures cannot be load rated analytically and are often subject to engineering judgement as the basis for rating. Otherwise, the typical approach for load rating such bridges is to conduct costly proof load testing and destructive probing together with making conservative assumptions. Therefore, any improvement to current practices will benefit DOTs and taxpayers alike. Accurately reconstructed 3D images of the girders to reflect the internal reinforcement could mitigate the need for costly, if not impractical, destructive testing and proof load testing, and help reduce dependency on conservative assumptions. This study examines a comprehensive NDE approach using ultrasonic tomography and GPR to aid in gathering structural information for load rating purposes. Different types of AASHTO and hollow core girders were tested. T2 - NDT-CE 2022 CY - Zurich, Switzerland DA - 16.08.2022 KW - Ultrasound KW - Radar KW - Bridges KW - Load rating PY - 2022 AN - OPUS4-56356 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Fabian T1 - HR-CS-GFMAS as a new screening method for emerging pollutants – per- and polyfluoroalkyl substances (PFASs) in the environment N2 - Per- and polyfluorinated alkyl substances (PFASs) are a group of several thousand individual compounds. Many PFASs are extremely persistent, bioaccumulative and toxic. The analysis of PFASs is challenging because of their various chemical and physical properties as well as the high number of compounds. Target-based approaches (e.g., LC-MS/MS) are limited to the availability of analytical grade standards and are not suitable for the analysis of new/unknown PFASs and transformation products. Therefore, PFAS sum parameter methods become increasingly important to indicate realistic PFAS pollution levels. PFAS sum parameters display the proportion of organically bound fluorine that can either be extracted (EOF) or adsorbed to activated carbon (AOF). For the instrumental analysis of such sum parameters, a fluorine selective detector is needed. High resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS) is a sensitive and highly selective tool for fluorine determination. The method is based on the in situ formation of diatomic gallium-mono fluoride (GaF) in a graphite furnace at a temperature of 1550°C. The molecular absorption of GaF can be detected at its most sensitive wavelength at 211.248 nm providing limits of quantification of c(F) 2.7 µg/L. In the present work a HR-CS-GFMAS method for EOF analysis was utilized for suspended particulate matter (SPM) analysis in German rivers in time lines from 2005–2020. Therefore, time and spatial resolved trends were investigated. In addition, SPM samples were analyzed for the Σ41PFAS using target analysis based on UHPLC-HRMS. Overall, target analysis drastically underestimated the total PFAS burden in SPM of German rivers compared to the EOF HR-CS-GFMAS analysis. Using a fluorine mass balance approach, only 0.2% to 38.6% of the EOF was explainable using the Σ41PFAS determined with target analysis. Our study highlights the need to integrate PFAS sum parameters (e.g., EOF with HR-CS-GFMAS) in PFAS risk assessment strategies. T2 - Adlershofer Forschungsforum 2022 CY - Berlin, Germany DA - 11.11.2022 KW - PFAS KW - HR-CS-GFMAS KW - Fluorine KW - SPM PY - 2022 AN - OPUS4-56392 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riedel, Soraya T1 - Tracing toxic fumonisins - Fumonisin sensing by Aspergillus niger Fumonisin Amine Oxidase (AnFAO) and amperometric hydrogen peroxide detection N2 - Fumonisins are a class of toxic secondary metabolites produced by various Fusarium species. The two most important producers of fumonisins are F. verticillioides and F. proliferatum but also Aspergillus niger is known to produce fumonisins. Most frequently they occur on maize, but also other grains can be contaminated with this group of mycotoxins. Exposure to fumonisins by dietary intake can have serious health effects on farm animals such as equine leukoencephalomalacia and porcine pulmonary oedema and is associated with neural tube defects and esophageal cancer in humans. Thus, the European Commission sets legal limits for fumonisins in foodstuffs. The detection of fumonisins is frequently performed in laboratories by chromatographic methods, which are costly and require trained personnel. Simplifying the analysis is therefore a major goal using portable detection systems. Electrochemical enzymatic biosensors offer great promise to meet this demand. Here we report for the first time an enzymatic fumonisin sensing approach with amperometric detection. For this purpose, an Aspergillus niger fumonisin amine oxidase (AnFAO) catalyzing the oxidative deamination of fumonisins, producing hydrogen peroxide, was recombinantly produced in E. coli. For the first time, the specific enzyme activity of AnFAO was determined using a horseradish peroxidase-based fluorescence assay. It was found that the specific activity of AnFAO using 20 μM Fumonisin B1 as substrate is higher than for 20 μM Fumonisin B2 with 0.122 U mg-1 and 0.058 U mg-1, respectively. It was possible to show a dependence of enzyme activity with enzyme – and substrate-concentration. For fumonisin B1 detection, the enzyme was coupled covalently to magnetic particles and the enzymatically produced H2O2 was detected amperometrically in a flow injection system using Prussian blue carbon electrodes. The developed method allows to quantify fumonisin B1 concentrations down to 1.5 µM and demonstrates that the recombinantly produced AnFAO was able to deaminate different concentrations of fumonisin even in immobilized form. Thus, this enzyme is well suited to develop an enzyme based electrochemical biosensor for fumonisin contaminated food and feed. T2 - Posterschau Adlershofer Forschungsforum CY - Berlin, Germany DA - 11.11.2022 KW - Biosensor KW - Amperometry KW - Mycotoxins KW - Electrochemical sensor KW - Recombinant protein expression PY - 2022 N1 - Geburtsname von Riedel, Soraya: Höfs, S. - Birth name of Riedel, Soraya: Höfs, S. AN - OPUS4-56248 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Sarah T1 - Cost-effective method for full-length sequencing of monoclonal antibodies N2 - With the development of hybridoma technology, monoclonal antibodies are increasingly important in therapeutic and analytical applications. For recombinant expression in mammalian cells, knowledge of the variable regions of both, heavy (VH) and light (VL) chain, is a necessary prerequisite for generating expression plasmids. Furthermore, cloning antibody sequences including constant regions CH1 to CH3 and CL reduces impact of hybridoma cell loss and associated full natural antibody sequence leakage. Here, we show a cost-effective workflow for amplification of IgG antibody variable regions in combination with advanced methods for full-length cloning of monoclonal antibodies. T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 11.11.2022 KW - Monoclonal Antibodies KW - DNA-Sequencing KW - PCR PY - 2022 AN - OPUS4-56275 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lucassen, A. T1 - Performance of the standardized testing method for detonation fl ame arresters at increased pressure N2 - Detonation flame arresters are typically used as autonomous protection systems in industrial applications to prevent potential hazards associated with flammable and/ or explosive chemicals. To verify and examine the suitability of detonation flame arresters, a testing method originating from the DIN EN ISO 16852 standard is used, which is mainly designed for atmospheric conditions. In order to optimize the production capabilities, numerous industrial processes are taking place at pressures, temperatures, or oxygen concentrations beyond the ambient range, i.e. at non-atmospheric conditions and information on the performance of the regulated testing method are therefore required when the standard testing protocols are modified with regard to pressure, temperature or oxidizer. The main objective of this study is to develop an improved testing method for detonation flame arresters, which offers a higher reproducibility and moreover, an applicability under non-atmospheric conditions. Therefore, an interlaboratory comparison on the performance of in-line flame arresters for stable and unstable detonations is jointly conducted by the project partners (PTB, BAM, Braunschweiger Flammenfilter GmbH and IBExU GmbH). The experiments are performed according to the testing method regulated in the DIN EN ISO 16852 standard for different pressures before ignition and different explosion groups. The experimental data is analyzed in detail to further optimize the test method and to thus achieve an improved reproducibility of detonation tests at high pressures, especially regarding the deflagration to detonation transition. Potential ambiguities of the standardized testing method that might lead to the differing results at the different institutes are identified from the interlaboratory comparison and the test method is modified accordingly. Based on these results, an improved testing method for detonation flame arresters will be developed, which will ensure a greater safety at process plants while handling combustibles. T2 - 39th International symposium on combustion CY - Vancouver, Canada DA - 24.07.2022 KW - Experimental tests KW - Flame arrester KW - Explosion protection PY - 2022 AN - OPUS4-56188 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frenzel, Olivia T1 - Identification of Metabolites and Transformation Products of Bisphenols N2 - Bisphenol A (BPA) is widely used in Polycarbonate (PC), Polyacrylic resins (PAR), Polysulfones (PSU), Epoxy resins (ER), and Polyetherimides (PEI). It is also used in recycled Polyvinyl chloride (PVC) [1–3]. These BPA-containing materials have a wide area of application, especially outside. All outdoor applications are exposed to a variety of environmental impacts, like temperature, solar radiation (physical influences), chemical influences (rain or ozone), biological influences (microorganisms), and mechanical influences (hail, sand). These impacts are damaging and aging the material which can be followed by leaching or migration of pollutants like Bisphenol A into the environment. Understanding the fate and behavior of the released pollutants is very important. Therefore, different transformation products of selected Bisphenols will be generated and analyzed. T2 - 33rd International Symposium on Chromatography – ISC 2022 CY - Budapest, Hungary DA - 18.09.2022 KW - Environment KW - Transformation products KW - Bisphenols KW - Metabolites KW - Wastewater PY - 2022 AN - OPUS4-56202 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strauß, Lea T1 - Empirical Model for Fatigue Life Prediction N2 - Laser-based powder bed fusion (PBF-LB) is an advanced additive manufacturing technique renowned for its precision and capability to fabricate complex metal components. However, the high thermal gradients and rapid cooling rates intrinsic to this process introduce significant process-induced effects, such as inhomogeneities, surface roughness, anisotropy, and residual stress, all of which critically influence the fatigue behavior of the produced parts. This study investigates the fatigue performance of AlSi10Mg samples produced by PBF-LB, examining the impact of varying surface conditions, geometries, and residual stress levels. Fatigue life prediction models are formulated based on nominal stress amplitude, residual stress, notch factor, crackinitiating inhomogeneity, and surface roughness, with smooth samples serving as a baseline reference. The study presents two empirical models for predicting fatigue life and fatigue strength using S-N curves and the Kitagawa-Takahashi diagram with the El Haddad approach, derived from comprehensive experimental data, including finite element modelling, fatigue life measurements, surface roughness evaluations, and residual stress analysis. T2 - ICAM2024 CY - Atlanta, GA, USA DA - 28.10.2024 KW - AlSi10Mg KW - Kitagawa-Takahashi diagram KW - Equivalent stress KW - Fatigue life prediction KW - PBF-LB/M PY - 2024 AN - OPUS4-61538 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hauschildt, Charlotte T1 - Development of methods to improve measurements of PFAS using GC-MS N2 - Per- and polyfluoroalkyl substances (PFAS) are a class of synthetically produced chemicals that includes an estimated 10.000 compounds. Known as “forever chemicals”, the characteristic feature is the complete or partial fluorination of the carbon chain. Due to the persistence, toxicity and ubiquitous occurrence, research has focused on the quali- and quantification of the most important compounds as well as on the investigation of toxicity and possible routes of entry over the last 10 years [1, 2]. Since 2022, four perfluorocarboxylic- and sulfonic acids have been regulated in food for the first time [3] . Liquid chromatography - mass spectrometry is the analytical standard used to test for PFAS, as the spectrum of detectable compounds is significantly more comprehensive than it is currently the case with gas chromatography - mass spectrometry (GC-MS). However, to be able to test for PFAS contamination in a more process-independent manner and to make the analysis more widely accessible, methods based on GC-MS are currently being developed. Since GC-MS methods only cover a fraction of the compounds belonging to the PFAS group so far, further development of the corresponding measurement methods is inevitable [2]. The here described project is part of the EU project 23IND13 ScreenFood [4]. The aim is to develop sensitive analytical GC-MS methods that contribute to an improved quali- and quantification of various PFAS (both currently regulated and emerging PFAS) in selected food and food packaging matrices. Of particular interest are native and recycled polymers such as PET. Besides, various techniques, including solvent-free variants such as TD-GC-MS, will be tested for a quick and easy analysis. This poster will present the overall project objectives and first results. The project (23IND13, ScreenFood) has received funding from the European Partnership on Metrology, co-financed from the European Union’s Horizon Europe Research and Innovation Programme and by the Participating States. T2 - 11th International Symposium on RECENT ADVANCES IN FOOD ANALYSIS (RAFA) CY - Prague, Czech Republic DA - 05.11.2024 KW - Per- and Polyfluoroalkyl Substances (PFAS) KW - Gas Chromatography - Mass Spectrometry (GC-MS) KW - EU Project KW - Food KW - Food Contact Material (FCM) PY - 2024 AN - OPUS4-61667 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hauschildt, Charlotte T1 - Method development for improved PFAS quantification using GC-MS N2 - Per- and polyfluoroalkyl substances (PFAS), commonly known as "forever chemicals”, are a class of man-made chemicals comprising an estimated 10.000 different compounds. The characteristic feature of PFAS is the complete or partial fluorination of the carbon chain. Due to the persistence, toxicity, and ubiquitous presence, research has focused on the identification and quantification of the most significant compounds, as well as exploring their toxicity and potential entry routes over the past decades [1,2]. Since 2022, four perfluorocarboxylic- and sulfonic acids have been regulated in food for the first time [3]. For the detection of PFAS liquid chromatography-mass spectrometry (LC-MS) is the standard analytical method, as it offers a much broader range of detectable compounds compared to gas chromatography-mass spectrometry (GC-MS). However, to enable more versatile testing and make PFAS analysis more widely accessible, new methods based on GC-MS are currently being developed. Since GC-MS methods only cover a fraction of the compounds belonging to the PFAS group so far, further development of the corresponding measurement methods is inevitable [2]. The work described here is part of the EU initiative 23IND13 ScreenFood [4]. Its goal is to develop sensitive GC-MS analytical methods to improve the identification and quantification of various PFAS - both those currently regulated and emerging - within selected food and food packaging matrices. Of particular interest are native and recycled polymers such as PET. Besides, various techniques, including solvent-free variants such as thermal desorption GC-MS, will be tested for a quick and easy analysis. This poster will present the project's main objectives and initial results. The project (23IND13, ScreenFood) has received funding from the European Partnership on Metrology, co-financed from the European Union’s Horizon Europe Research and Innovation Programme and by the Participating States. T2 - Adlershofer Forschungsforum (AFF) CY - Berlin, Germany DA - 11.11.2024 KW - Per- and Polyfluoroalkyl Substances (PFAS) KW - Gas Chromatography - Mass Spectrometry (GC-MS) KW - EU Project KW - Food KW - Food Contact Material (FCM) PY - 2024 AN - OPUS4-61668 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scharek, Vera T1 - Screening for tin-based environmental Pollutants in Sediment via ETV/ICP-MS N2 - Shipping plays a significant role in the global trade. However, it is negatively impacted by the unwanted accumulation of marine organisms on the ship hulls. Antifoulant paints containing the organometallic compound tributyltin (TBT) have been used to prevent the so-called fouling on ship hulls since the 1960s. Compared to the generally considered non-toxic inorganic tin, the endocrine disruptor TBT affects the biological fitness of non-target organisms. The most prominent effects are imposex in snails and shell deformation in oysters. This resulted in a global ban by the International Maritime Organization in 2008, but recent studies have found alarmingly high concentrations in sediment. Once TBT is released from the ship hull, it gets effectively absorbed into the sediment. Under anaerobic conditions and the absence of light, the half-life is extended up to several decades. The resuspension and transport of sediment remobilizes tin organic compounds (OTCs), making them bioavailable even in distant regions. To conduct a comprehensive risk assessment, it is necessary to monitor OTCs in sediment. Conventionally, species-specific analysis of OTCs involves (gas-)chromatographic separation after extraction and pre-concentration of the analytes. However, the sample preparation is time-consuming, chemical-intensive, and prone to species-transformation, respectively incomplete extraction. In this context, electrothermal vaporization coupled with inductively coupled plasma-mass spectrometry (ETV/ICP-MS) shows potential as a fast and automatable screening tool for OTCs in environmental samples. In this study, an ETV/ICP-MS method for the speciation analysis of OTC in environmental samples has been developed. The method was validated by spiking experiments using an OTC-containing, respectively OTC-free certified reference material. With a single ETV temperature program, the full separation of OTCs, inorganic tin, and potentially interfering major matrix components were achieved in three different sediment matrices. Co-vaporization of the individual OTC species could be observed. However, when used as a screening tool for environmental monitoring sum parameter analysis of OTC is beneficial. In conclusion, ETV/ICP-MS, is a fast and convenient tool for monitoring metal-based pollutants at ppb level in the environment. T2 - Analytica conference 2024 CY - Munich, Germany DA - 09.04.2024 KW - Organotin compounds KW - Sediment KW - Electrothermal Vaporization KW - Inductively coupled plasma-mass spectrometry PY - 2024 AN - OPUS4-61622 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zuliani, T. T1 - Advancing Stable and Long-lived Radiogenic Isotope Ratio Measurements of Environmental Pollutants N2 - The isotopic compositions of elements vary in the environment due to processes such as radioactive decay, cosmic ray spallation, mass-dependent and mass-independent fractionation, and different anthropogenic sources such as industrial activities, nuclear weapon testing, nuclear accidents, as well as natural phenomena long-range atmospheric and water transport, climate change, etc. Isotope ratio data obtained by mass spectrometry now plays an important role as tracers of a multitude of processes in Earth and environmental sciences. Inductively coupled plasma mass spectrometry (ICP-MS) is a widely used technique for detecting variations in isotopic abundances in e.g., environmental samples. Recent advancements in mass spectrometric instrumentation have significantly enhanced sensitivity and precision, enabling the reliable detection of even minute variations in the isotopic composition of most elements with more than one natural isotope. However, to fully realize these new capabilities, a significant analytical challenge remains due to a vast number of analyte/matrix combinations, concomitant matrix effects, spectral interferences, and instrumental isotopic fractionation that must be characterized before and during the measurements. Success in developing new and improved methods for stable and long-lived radiogenic isotope ratio measurements by mass spectrometric methods depends on improvements in the reduction and quantification of uncertainties associated with sample preparation, instrumentation, and external calibration. The goal of this presentation is to show the key findings of the European Partnership on Metrology project “Metrology for the harmonisation of measurements of environmental pollutants in Europe” - MetroPOEM (https://www.npl.co.uk/euramet/metropoem), with a focus on the ICP-MS techniques used for isotope ratio measurements. Several elements were used as model systems for the development and optimisation of sample preparation and measurement procedures, including Li, B, Cr, Cd, Ni, Sb, Pb, and U. Isotope ratios of these elements determined by multi-collector ICP-MS, sector field ICPMS, quadrupole ICP-MS, and ICP-MS/MS will be assessed and compared. Data on their performance will be presented and assessed in terms of accuracy and precision. Comprehensive uncertainty budgets for the determination of the isotope ratios of the selected elements by different calibration approaches will be presented. The presented results will highlight the potential of recent advances in ICP-MS technology. T2 - 11th Nordic Conference on Plasma Spectrochemistry CY - Loen, Norway DA - 09.06.2024 KW - Isotope analysis KW - ICP-MS KW - Measurement uncertainty PY - 2024 AN - OPUS4-61599 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Szymoniak, Paulina T1 - Supramolecular Polymerization Induced by Confined Structural Water in Small Crown Macrocycle N2 - Structural water, integral to biological systems, i.e., for protein stability and function, has rarely been explored in materials science. Supramolecular polymers, which assemble through non-covalent interactions, offer functionalities such as responsiveness and self-healing. Traditionally, in such systems water is considered as a solvent. Herein, a novel water-induced supramolecular polymer hydrogel is reported, formed by a single crown ether macrocycle with a selenoxide hydrogen bonding receptor and a hydrophobic selenium-substituted core. Structural water was confined in a nanosegregated three-dimensional architecture, maintaining water in a liquid-like state down to -80 °C. Unlike previous studies requiring multiple crown ether units for structural water formation, this single unit system effectively controls structural water and supramolecular polymerization. The presence of confined water was revealed through dielectric and Flash DSC experiments. The resulting hydrogel exhibits exceptional adhesion to hydrophilic surfaces, retaining strength at low temperatures. These findings demonstrate the significant role of a single macrocycle in governing water structure and functionality in supramolecular systems. An expansion of the understanding of water's role beyond a solvent has been achieved, showcasing its potential as a comonomer in material science, particularly in the development of responsive, adhesive supramolecular polymers and hydrogels. T2 - Polydays 2024 CY - Berlin, Germany DA - 30.09.2024 KW - Hydrogels KW - Structural water PY - 2024 AN - OPUS4-61658 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Melzer, Michael T1 - The temperature DCC exposed N2 - The DAkkS-accredited calibration laboratory of the German Federal Institute for Materials Research and Testing (BAM) has established valid XML digital calibration certificates (DCCs) for calibrations of resistance thermometers within the scope of its accreditation. Hence, all necessary information according to ISO/IEC 17025 and the DKD-R 5-1 calibration rule is provided in a machine-readable and machine-interpretable form. Furthermore, we actively participate in the definition of general and community-specific good practice requirements for the DCC of temperature quantities as technical specifications, hosted by the German Calibration Service (DKD). In this contribution the entire XML source code of a DCC from a Pt 100 thermometer calibration will be exposed and discussed. The DCC was automatically generated using a self-implemented middleware that is compiling the metadata (i.e. customer-, order-, item- and method data) and combines it with the measured calibration data and influence conditions into a process- and lab-specific DCC template. Since it was issued as an accredited calibration certificate, the validated and authorized DCC is also equipped with the novel digital accreditation symbol to form an `eAttestation´. This advanced electronic seal with a qualified certificate was recently piloted with the German national accreditation body (DAkkS), and, after successful validation by the receiver, verifies the active accreditation status of the issuing body at the time of sealing (authorization). As it also provides all other functionalities of an electronic seal, (i.e. data integrity and authenticity), it can fully replace a digital signature on accredited DCCs. The presented temperature DCC architecture fully complies to the latest good practice definitions of the DKD and thus represents a level 4 DCC according to the utility model for machine interpretability of DCCs. This also includes basic and quantity-specific refType definitions that are linked to an online refType repository to harmonize these key semantic providing elements across other DCC-issuing laboratories. The paper and also its conference poster will not represent a general introduction and motivation for the DCC itself. It rather addresses more detailed aspects of good practice, especially for DCCs from temperature quantity calibrations and may stimulate in-depth discussions between DCC experts from the providing, utilizing and accrediting points of view. The work was performed within the national QI-Digital initiative of the German Federal Ministry for Economic Affairs and Climate Action. T2 - IMEKO 2024 XXIV World Congress CY - Hamburg, Germany DA - 26.08.2024 KW - Digital Calibration Certificate KW - E-Attestation KW - QI-Digital KW - Digital Metrology KW - Calibration PY - 2024 UR - https://www.imeko2024.org/home AN - OPUS4-61872 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lecompagnon, Julien T1 - New methods of thermographic super resolution with structured laser heating N2 - Thermographic NDT is based on the interaction of thermal waves with inhomogeneities. The propagation of thermal waves from the heat source to the inhomogeneity and to the detection surface according to the thermal diffusion equation leads to the fact that two closely spaced defects can be incorrectly detected as one defect in the measured thermogram. In order to break this spatial resolution limit (super resolution), the combination of spatially structured heating and numerical methods of compressed sensing can be used. The improvement of the spatial resolution for defect detection then depends in the classical sense directly on the number of measurements. Current practical implementations of this super resolution detection still suffer from long measurement times, since not only the achievable resolution depends on performing multiple measurements, but due to the use of single spot laser sources or laser arrays with low pixel count, also the scanning process itself is quite slow. With the application of most recent high-power digital micromirror device (DMD) based laser projector technology this issue can now be overcome. Our studies deal with the application of fully 2D-structured DMD-based excitation and subsequent super-resolution-based defect reconstruction. We analyze the influence of different testing parameters, like the number of measurements or the white content of the excitation pattern. Furthermore, we have dealt with the choice of parameters in the reconstruction that have an influence on the underlying minimization problem in terms of compressed sensing. Finally, the results of the super resolution reconstruction are compared with the results based on conventional thermographic testing methods. T2 - 20th World Conference on Non-Destructive Testing (WCNDT) CY - Incheon, Korea DA - 27.05.2024 KW - Thermography KW - Laser KW - NDT KW - Super-Resolution KW - DLP KW - DMD PY - 2024 AN - OPUS4-60171 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quercetti, Thomas T1 - Enhancement of the bam fire test stand for testing a large transport package for radioactive materials N2 - Packages for the transport of spent nuclear fuel are designed to endure severe accidents. To obtain approval, these transport packages must adhere to the specification-based criteria of the international transport regulations SSR-6 of the International Atomic Energy Agency (IAEA). To ensure compliance with these requirements, specific mechanical and thermal tests need to be addressed with respect to the package type. Typically, SSR-6 prescribes a mechanical test followed by a thermal fire test as part of different testing scenarios. To approve the latter test of the sequence, BAM performs calorimeter tests in advance with so-called fire reference packages for characterizing the actual fire and its impact on the package to be tested. Packages are designed with different geometry sizes depending on their purpose. For previous tests, the implemented test setups in the fire test stand were sufficiently dimensioned and could cover all requirements in this respect. However, to cover additional testing needs in the future, BAM is expanding the test setup for the purpose of testing significantly larger packages. In previous test setups one ring burner for propane surrounding the test specimen was sufficient. The limiting size in this configuration was the design height of the transport package to be tested. According to the thermal test of the IAEA-Regulations [1], a 30-minute fully engulfing 800°C pool fire or an equally severe fire, e.g., propane gas fire, must be applied to the transport package. Possible adjustments such as nozzle cross-section and propane mass flow can be adjusted to a certain extent. Further modifications, to cover significantly higher and larger packages all-around with a fully engulfing fire, must be accomplished with an additional, second burner ring. Both burner rings had the same dimensions and were mounted on top of each other at different heights to create a significantly larger volume of fire that completely engulfs the package including its impact limiter. To meet the IAEA regulatory boundary conditions, the enhanced fire test stand with the second burner ring is tested with a large fire reference package and will then be used for real-size transport packages after all parameters are successfully met. This fire reference package represents the external geometry of a generic transport cask for radioactive material and is equipped with numerous temperature sensors to record temperature curves at the interior wall surfaces. T2 - RAMTrans 2024 CY - London, United Kingdom DA - 14.05.2024 KW - Fire testing KW - Full-scale KW - Transport package PY - 2024 AN - OPUS4-60255 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Casperson, Ralf T1 - Verwendung von DICONDE bei der Eisenbahnschienenprüfung N2 - Bei der zerstörungsfreien Prüfung verlegter Eisenbahnschienen werden die Rohdaten derzeit in proprietären Datenformaten gespeichert und auf Datenträgern zwischen den Prüfzügen und den auswertenden Stellen versendet. Die proprietären Datenformate sind in der Regel nur den Herstellern der Prüfsysteme bekannt und deren Dokumentation nicht allgemein zugänglich. Die „Standard Practice for Digital Imaging and Communication in Nondestructive Evaluation“ (DICONDE), basierend auf dem medizinischen Standard „Digital Imaging and Communication in Medicine“ (DICOM), ermöglicht es, sowohl Prüfdaten als auch Prüfergebnisse und Streckeninformationen in einem standardisierten Format zu speichern und zwischen verschiedenen Endpunkten zu übertragen. Das Poster gibt zunächst einen kurzen Überblick über die hierarchische Struktur von DICONDE und zeigt dann, wie DICONDE bei der Prüfung verlegter Eisenbahnschienen verwendet werden kann. Die geometrischen Besonderheiten (mehrere Kilometer Länge pro Prüffahrt, kurviger Streckenverlauf) stellen dabei eine besondere Herausforderung dar. Im Rahmen des mFUND-geförderten Projektes „Arteficial Intelligence for Railway Inspection (AIFRI)“, Förderkennzeichen 19FS2014C, wurde ein Vorschlag für eine Erweiterung des DICONDE-Standards für die Schienenprüfung erarbeitet und bei der ASTM eingereicht. T2 - DGZfP Jahrestagung 2024 CY - Osnabrück, Germany DA - 05.05.2024 KW - DICONDE KW - Eisanbahn KW - Schienenprüfung PY - 2024 AN - OPUS4-60018 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weber, Mike T1 - Consequences of an Imperfectly Mounted Reinforcement Cage in a Cylindrical Concrete Container During Mechanical Specimen Tests N2 - In 2007 the license for the German Konrad repository for low and intermediate level radioactive waste was finally confirmed. Since then, the site is improved, prepared and equipped for the currently planned start of waste package emplacement in 2029. Bundesanstalt fuer Materialforschung und -pruefung is regularly contracted by the Bundesgesellschaft für Endlagerung as the responsible authority for waste product control, waste container design testing, and waste package acceptance. In this context BAM is mainly responsible for design testing of various container types including the evaluation of quality assurance measures for container manufacturing. In addition to general requirements concerning container design, the casks have to withstand specific mechanical load scenarios. Drop tests from different heights under consideration of the most damaging drop orientation and a stacking test are two examples for necessary safety demonstrations. If the containers are made from concrete the reinforcement has the function to absorb tensile forces the concrete is not able to withstand by its own. Because of manufacturing imperfections of cylindrical concrete containers manufactured already decades ago, the reinforcement cages are not always exactly, asymmetrically positioned when they were poured. This inspired BAM to perform various ABAQUS® finite-element (FE) simulations by using the example of a simplified cylindrical container design with generic dimensions. On the basis of the calculated tensile and compressive stress distributions suggestions are derived on how a cylindrical concrete container with an imperfectly placed reinforcement cage has to be oriented for a drop or stacking test to ensure the most damaging test scenario. T2 - RAMTRANS 2024 CY - London, United Kingdom DA - 14.05.2024 KW - Finite-element-analysis KW - Container design testing procedure KW - Reinforced concrete containers KW - Drop test KW - Stacking test KW - Imperfectly mounted reinforcement cage PY - 2024 AN - OPUS4-60120 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rolle, Annette A1 - Neumeyer, Tino A1 - Ballheimer, Viktor A1 - Wille, Frank T1 - Investigations of Aged Metal Seals for Transport Package Safety Assessment N2 - Acceptable limits for activity release from transport casks for high-level radioactive material specified in the IAEA regulations must be kept by the integrity of cask body and the cask sealing system. BAM as the German competent authority for mechanical, thermal and containment assessment of packages liable for approval verifies the activity release compliance with the regulatory limits. The specification of conservative package design leakage rates is one of the most important aspects in assessment. Metal seals of the Helicoflex® Type are usually used to ensure the required package tightness for both, storage, and transport of the cask before and after storage. Due to the long-term use the seal behavior is influenced by temperature and time. The mechanical and thermal loadings associated with the routine, normal and accident conditions of transport specified in the regulations can have a significant effect on the leak tightness of the sealing system. Whereas the safety for application of new, non- aged Helicoflex® seals is verified sufficiently, there are still technical data gaps concerning the efficiency of aged Helicoflex® seals. BAM performed experiments to learn more about the sealing efficiency of aged Helicoflex® seals with Aluminum and Silver outer jackets. The seals were compressed in test-flanges and for artificial ageing the complete flange systems were stored in an oven for several month at a high temperature. After this ageing procedure the flanges were opened completely, the seals were moved a little to vary the contact area, and the flanges were compressed again. During the compression and decompression tests after the aging, load-deformation characteristics of the seals, and leakage rates were measured. With these tests a load situation was simulated, which can occur in the regulatory drop test of the cask: Under high impact loads the bolted lid can lift a little for a short moment, allowing a little movement of the seal, so that the contact area can change before compressing again. Details about test conditions and first results will be presented in the poster. T2 - RAMTrans 2024, 12th Internatiopnal Conference on the Transport , Storage and Disposal of Radioactive Materials CY - London, UK DA - 15.05.2024 KW - Seals KW - Ageing KW - Radioaktiv PY - 2024 AN - OPUS4-60112 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leube, Peter T1 - Quantification of ultrashort per- and polyfluoroalkyl substances (PFAS) in water samples via headspace gas chromatography-mass spectrometry (GC-MS) - a method development N2 - Per- and polyfluoroalkyl substances (PFAS) were classified as a group of highly concerning chemicals over the last decades. Because of the high persistence of PFAS, their previous use led to contamination of the environment and human population. Due to ongoing use and incomplete remediation or destruction methods, the PFAS background in the environment is growing continuously. The presence of ultrashort PFAS (with ≤3 carbon atoms) in the environment is often overlooked despite their contributions to PFAS levels. These compounds may directly contaminate the environment and arise from degradation of polyfluorinated compounds as well as incomplete PFAS destruction in certain industrial processes. Nonetheless, few approaches for targeted analysis of ultrashort PFASs have been developed, except for trifluoroacetic acid (TFA). Beside liquid (LC-MS/MS), supercritical fluid (SFC-MS/MS), and ion chromatography (IC-MS)-based systems, gas chromatography coupled with mass spectrometry (GC-MS) is a promising method for detection and quantification of ultrashort PFAS. The goal of this study was to develop a simple headspace GC-MS method for the quantification of ultrashort perfluorocarboxylic acids (PFCAs) and polyfluorinated alcohols (PFOHs) in water samples. In contrast to PFOHs, functionalization of PFCAs was required for quantification. This was done by esterification with methanol at 80 °C, which can be carried out directly in the headspace GC-MS system. Moreover, several parameters were optimized to achieve a low limit of quantification (LOQ) for the analytes used: i) The ratio of the aqueous solution, methanol, and available gas phase within the analysis vessel, ii) the concentration of additional acid in esterification mixtures of PFCAs, iii) shaking frequency and iv) shaking time before analysis. After optimizing the procedure, we were able to quantify ultrashort PFCAs and PFOHs. Thus, our developed headspace GC-MS method has the potential to be used as an alternative target analysis for ultrashort-chain PFCAs and PFOHs in various water samples (groundwater, wastewater). T2 - SETAC Europe 34th Annual Meeting CY - Seville, Spain DA - 05.05.2024 KW - Ultrashort PFAS KW - Headspace GC-MS KW - Perfluorocarboxylic acid (PFCA) KW - Polyfluorinated alcohol (PFOH) PY - 2024 AN - OPUS4-60042 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ben Efraim, R. T1 - Comparison of PFAS Adsorption and Electro-Sorption Using Pristine and Functionalized MWCNTs N2 - Per- and polyfluoroalkyl substances (PFAS) have been extensively utilized in various industrial processes, resulting in elevated concentrations in landfills and drinking water reservoirs. Despite recognizing that shortchained PFAS are harmful, they are often overlooked. Short-chain PFAS are more challenging to remove via adsorption and membrane separation processes, and their detection is complex, thus creating a critical gap in understanding their environmental impact. To improve their environmental monitoring, we aim to improve short-chain PFAS adsorption and electro-sorption on novel carbon-based adsorbers such as pristine and functionalized multi-walled carbon nanotubes (MWCNTs) and assess their adsorption mechanisms. Based on the obtained result, we aim to develop a PFAS passive sampling device. T2 - German Israeli Water Technology Status Seminar CY - Koblenz, Germany DA - 18.06.2024 KW - Ground water KW - Per- and Polyfluoroalkyl substances (PFAS) KW - Sorption PY - 2024 AN - OPUS4-60329 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leube, Peter T1 - Quantification of ultrashort per- and polyfluoroalkyl substances (PFAS) in water samples via headspace gas chromatographymass spectrometry (GC-MS) - a method development N2 - Ultrashort PFAS (≤ 3 carbon atoms) were overlooked for a long time in analytical monitoring. Beside through the use of these substances, they contribute to the PFAS background in the environment through (environmental/ bio-) degradation and incomplete destruction3 of PFAS with longer carbon chains or other fluorinated compounds. As part of the German-Israeli Cooperation in Water Technology Research project „Detection, quantification, and treatment of per- and polyfluoroalkyl substances in groundwater“ (DEFEAT-PFAS), we are developing an as simple as possible direct headspace (HS-)GC-MS method to detect trifluoroacetic acid (TFA) and perfluoropropanioc acid (PFPrA), as well as trifluoroethanol (TFEtOH), pentafluoropropanol(PFPrOH) and hexafluoroiospropanol (HFIP) in water samples. Here we present the results of the PFAS mentioned in spiked ultrapure water solutions. T2 - German Israeli Water Technology Status Seminar CY - Koblenz, Germany DA - 18.06.2024 KW - Ground water KW - Per- and Polyfluoroalkyl substances (PFAS) KW - Gas chromatography - mass spectrometry (GC-MS) PY - 2024 AN - OPUS4-60330 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schob, Daniela T1 - Comparative Analysis FFF vs. cold rolled 316L Samples N2 - This study provides insights into the properties of 316L stainless steel produced by additive manufacturing using fused filament fabrication (FFF). One key finding is particularly noteworthy: in significant contrast to cold-rolled 316L, FFF316L develops a pronounced martensite phase after fabrication. The comprehensive comparative analysis shows that FFF316L not only retains the ferrite volume content, but that this is also significantly influenced by the build-up direction. Despite the sintering process, which typically involves densification of the material, a pore volume fraction of 8.45 % remains, which influences the mechanical properties. Although FFF316L has lower elastic modulus and tensile strength values compared to cold-rolled 316L, its ductility is still competitive. The study further reveals that deformation-induced martensite forms at the intersections of the deformation twins and ferrite islands form at the grain boundaries during the compression and sintering phases. These findings highlight the challenges associated with FFF316L in specific application fields and signal the need to continue to carefully evaluate and improve the development of manufacturing technologies. T2 - 4th Symposium on Materials and Additive Manufacturing - Additive 2024 CY - Berlin, Germany DA - 12.06.2024 KW - Additive manufacturing KW - Fused Filament Fabrication KW - Computed Tomography KW - 316L Stainless Steel KW - Deformation-Induced Martensite PY - 2024 AN - OPUS4-60302 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bayerlein, Bernd T1 - PMD core ontology: Building Bridges at the Mid-Level – A Community Effort for Achieving Semantic Interoperability in Materials Science N2 - Knowledge representation in the materials science and engineering (MSE) domain is a vast and multi-faceted challenge: Overlap, ambiguity, and inconsistency in terminology are common. Invariant and variant knowledge are difficult to align cross-domain. Generic top-level semantic terminology often is too abstract, while MSE domain terminology often is too specific. This poster presents an approach to create and maintain a comprehensive and intuitive MSE-centric terminology by developing a mid-level ontology–the PMD core ontology (PMDco)–via MSE community-based curation procedures. The PMDco is designed in direct support of the FAIR principles to address immediate needs of the global experts community and their requirements. The illustrated findings show how the PMDco bridges semantic gaps between high-level, MSE-specific, and other science domain semantics, how the PMDco lowers development and integration thresholds, and how to fuel it from real-world data sources ranging from manually conducted experiments and simulations as well as continuously automated industrial applications. T2 - TMS - Specialty Congress 2024 CY - Cleveland, Ohio, US DA - 16.06.2024 KW - Interoperability KW - Semantic Interoperability KW - Digtial Representation KW - Knowledge graph and ontologies PY - 2024 AN - OPUS4-60378 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chaudhuri, Somsubhro T1 - Fatigue damage detection using Lock-In Thermography N2 - Early detection of fatigue cracks and accurate measurements of the crack growth play an important role in the maintenance and repair strategies of steel and composite structures exposed to cyclic loads during their service life. Commonly used non-destructive techniques such as strain gauges, clip gauges, ultrasound, etc. used for detection and monitoring of fatigue damage are contact-based and perform local measurements. In addition, complex full-field techniques are commonly investigated, such as digital image correlation (DIC) and infrared thermography (IRT). In this work, a specific implementation of IRT, called lock-in IRT, is implemented for fatigue damage detection. This technique evaluates the thermal stress response of test specimens, specifically focusing or “locking-in” on the frequency of applied cyclic loads. Three different test scenarios are presented. First, a section of a wind turbine rotor blade made of a glass fibre reinforced plastic (GFRP) shell structure under cyclic load was examined with Lock-In IRT along with DIC. The primary advantage of Lock-In IRT in this test setup was that it required no sample preparation, as compared to the painting and speckle pattern required for DIC. In the frequency domain, specifically the frequency of applied cyclic load, it was possible to extract local directional inhomogeneous loading within the shell structure due to progressive damage, confirmed with the deformation obtained from DIC results. Second, thick welded specimens made of structural steel S355 were subjected to multiple NDT methods such as strain gauges, crack luminescence penetration (developed specifically at BAM), ultrasound, and IRT, with the aim of investigating the ability of each technique to detect fatigue damage initiation as early as possible in the total fatigue life of the specimen. Amongst the range of implemented techniques, Lock-In IRT provided the first indication of fatigue crack initiation at the weld toe of the specimens. This was validated with the other techniques as well as fractography. Third, steel S355 specimens used to manufacture offshore wind turbine monopiles were tested. The specimens were extracted from a plate that was submerged in a marine environment, resulting in a corroded surface with corrosion pits. These specimens were subjected to cyclic tensile loads without removing the corrosion pits. The fatigue tests were monitored using IRT in a special full-field capturing setup that enables both sides of the specimen to be examined with one IRT camera. This allowed the entire pitted surface to be monitored for fatigue damage initiation at the same time. With the implementation of Lock In IRT, the surface stress distribution could be captured (the stress concentration at the pits), and fatigue crack initiation could be detected and linked with specific corrosion pits. T2 - 20th World Conference on Non-Destructive Testing CY - Incheon, South Korea DA - 27.05.2024 KW - Non-destructive testing KW - Thermografie KW - Thermal stress analysis KW - Fatigue testing KW - Damage detection PY - 2024 AN - OPUS4-60697 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kruschwitz, Sabine T1 - Verbesserung der Kreislaufwirtschaft im Bauwesen durch Bauwerksdiagnose: Ein Einblick in das Projekt REINCARNATE N2 - Das EU-finanzierte Projekt REINCARNATE, im Rahmen des Horizont Europa Programms, setzt neue Maßstäbe in der Kreislaufwirtschaft des Bauwesens durch den Einsatz fortschrittlicher Bauwerksdiagnose-Tools. Diese Werkzeuge, insbesondere die Zerstörungsfreie Prüfung (ZfP), spielen eine zentrale Rolle bei der Förderung der Zirkularität in der Baubranche. Die ZfP ermöglicht es, die Qualität und Eignung von Baumaterialien präzise zu bestimmen, ohne diese zu beschädigen. Dies ist entscheidend für die Wiederverwendung und das Recycling von Baustoffen und trägt wesentlich zur Reduzierung des Bauabfalls bei. Durch die Integration dieser Technologie in die Planungs- und Entwurfsphase können Architekten und Ingenieure aktiv einen nachhaltigeren Bauprozess fördern. REINCARNATE verbindet diese Diagnosemethoden mit digitalen Innovationen wie der Technologie des digitalen Zwillings und KI-gesteuerten Lösungen. Diese Kombination ermöglicht eine noch genauere und effizientere Bewertung und Nutzung von Baustoffen, was die Wiederverwendbarkeit und das Recycling verbessert. Im Rahmen des Projekts werden elf Demonstrationsprojekte in ganz Europa umgesetzt, die die praktische Anwendung dieser Technologien zeigen. Diese Projekte demonstrieren, wie ZfP und digitale Werkzeuge zusammenwirken, um Materialien, die traditionell als Abfall angesehen werden, in wertvolle Ressourcen umzuwandeln. Das Ziel von REINCARNATE ist eine 80-prozentige Verringerung der Bauabfälle und eine 70-prozentige Reduzierung des CO2-Fußabdrucks. Mit diesem Beitrag demonstrieren wir eine klare, umsetzbare Anleitung für die Bauindustrie, wie Innovationen in die Praxis umgesetzt werden können. Wir präsentieren greifbare Strategien zur Implementierung nachhaltiger, zirkulärer Praktiken im Bauwesen und markiert einen Wendepunkt in Richtung einer nachhaltigeren Bauindustrie. T2 - Fachtagung Bauwerksdiagnose 2024 CY - Berlin, Germany DA - 29.02.2024 KW - Concrete KW - Recycling KW - BIM KW - AI KW - NDT PY - 2024 AN - OPUS4-60620 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nispel, Katja A1 - Stahl, Michael T1 - Datenbank GEFAHRGUT - Ein gemeinsames Projekt vom BMVI und der BAM N2 - Poster mit den Anwendungen des Gefahrgutdatenpools der BAM T2 - 18. Stuttgarter Gefahrguttag der IHK Stuttgart CY - Stuttgart, Germany DA - 19.10.2016 KW - Gefahrgut KW - Transport KW - Dangerous goods KW - Transportation PY - 2016 AN - OPUS4-38230 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nispel, Katja A1 - Stahl, Michael T1 - Informationssystem Datenbank GEFAHRGUT - Modul für radioaktive Stoffe N2 - Vorstellung des Moduls für radioaktive Stoffe der Datenbank GEFAHRGUT T2 - 18. Stuttgarter Gefahrguttag der IHK Stuttgart CY - Stuttgart, Germany DA - 19.10.2016 KW - Datenbank GEFAHRGUT KW - Informationssystem KW - Modul für radioaktive Stoffe KW - Gefahrgut KW - Dangerous goods KW - Dangerous goods database KW - Radioactive materials module PY - 2015 AN - OPUS4-38231 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Babutzka, Martin T1 - Bestimmung von Korrosionsabträgen an Zink mittels gelartiger Elektrolyte N2 - Das Poster zeigt eine Methode zur Bestimmung von Korrosionsraten und Korrosionsabträgen an Zink durch Verwendung von gelartigen Elektrolyten. T2 - Jahrestagung 2016 der GfKORR CY - Frankfurt/Main, Germany DA - 15.11.2016 KW - Gelartige Elektrolyte KW - Gel-type electrolytes KW - Verzinkungen KW - Zinc coatings KW - Korrosionsabtrag KW - Corrosion loss PY - 2016 AN - OPUS4-38298 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinemann, Steffi T1 - Untersuchung des Einflusses industrieller Korundschleifprozesse auf die Korrosionsbeständigkeit nichtrostender Stähle mittels KorroPads N2 - Das Poster stellt aktuelle Eregbnisse des AiF-Vorhabens 18823 N/1 zum Einfluss von Schleifprozessen auf die Korrosionsbeständigkeit nichtrostender Stähle vor. T2 - Jahrestagung 2016 der GfKORR CY - Frankfurt/Main, Germany DA - 15.11.2016 KW - Korrosion KW - Corrosion KW - Korundschleifen KW - Corundum grinding KW - Nichtrostende Stähle KW - Stainless steels PY - 2016 AN - OPUS4-38299 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ehlert, Christopher T1 - A detailed assignment of NEXAFS resonances of imidazolium based ionic liquids N2 - In Near Edge X-Ray Absorption Fine Structure (NEXAFS) spectroscopy X-Ray photons are used to excite tightly bound core electrons to low-lying unoccupied orbitals of the system. This technique offers insight into the electronic structure of the system as well as useful structural information. In this work, we apply NEXAFS to two kinds of imidazolium based ionic liquids ([CnC1im]+ [NTf2]− and [C4C1im]+ [I]−). A combination of measurements and quantum chemical calculations of C K and N K NEXAFS resonances is presented. The simulations, based on the transition potential density functional theory method (TP-DFT), reproduce all characteristic features observed by the experiment. Further, a detailed assignment of resonance features to excitation centers leads to a consistent interpretation of the spectra. T2 - 52nd Symposium on Theoretical Chemistry (STC2016) CY - Ruhr Universität Bochum, Germany DA - 26.9.2016 KW - NEXAFS KW - Simulation KW - Ionic liquid PY - 2016 AN - OPUS4-38276 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias A1 - Neumann, Patrick P. T1 - Leak detection with linear soil gas sensors under field conditions - First experiences running a new measurement technique N2 - A 400 m² soil test field with gas injection system was built up, which enables an experimental validation of linear gas sensors for specific applications and gases in an application-relevant scale. Several injection and soil watering experiments with carbon dioxide (CO2) at different days with varying boundary conditions were performed indicating the potential of the method for, e.g., rapid leakage detection with respect to Carbon Capture and Storage (CCS) issues. T2 - IEEE Sensors 2016 CY - Orlando, FL, USA DA - 30.10.2016 KW - Soil test field KW - Membrane-based linear gas sensor KW - Leak detection KW - Field conditions PY - 2016 AN - OPUS4-38247 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehnik-Habrink, Petra T1 - Human influences on forest soil - pollution with PAH, PCB and OCP in Germany N2 - While organic pollutants have been extensively studied in urban and agricultural areas, data from forested regions are relatively rare. Within the framework of a forest soil inventory in Germany polycyclic aromatic hydrocarbons (PAH), polychlorinated biphenyls (PCB) and organochlorine pesticides (OCP) were analyzed in 1500 soil samples taken from 3 soil horizons at 447 sites. An analytical protocol was developed and validated for the simultaneous extraction and measurement of all analytes in humic rich soil at trace level range. It included pressurized liquid extraction (PLE) and a two step cleanup procedure consisting of gel permeation chromatography (GPC) followed by solid phase extraction (SPE). Quantification was carried out using gas chromatography combined with mass spectrometry (GC-MS). In line with the monitoring campaign a comprehensive quality assurance concept was implemented to guarantee constant analytical measurement conditions for two years. The protocol is applicable for field laboratories with a high level of automation and for analyzing high sample amounts. At most sampling sites pollutant concentrations gradually decrease with depth. Only few spots showed highest concentrations in the upper mineral soil. In the O-horizon the sum concentrations of 16 PAHs range from 104 to 14.000 µg/kg, of 6 PCBs from <1 to 106 µg/kg and the sum of DDT and metabolites range from <1 to ca. 4.000 µg/kg. The observed concentration of PAH, PCB and OCP reflect an ubiquitous background contamination at most sites. Relatively high concentrations of PAH and PCB are related to industrial areas and peak concentrations only of PAH are associated with open cast mining of brown coal areas. The spatial distribution of the contents of DDT and metabolites in German forest soils can clearly be attributed to historic application. A contribution of ubiquitous background pollution derived from long-range atmospheric transport is likely for some compounds in the studied area, e.g., DDT in the western part of Germany. The results generally reflect the distribution of POPs in densely populated and industrialized countries located in temperate regions]. T2 - International network of environmental forensics CY - Oerebro, Sweden DA - 27.06.2016 KW - Forest soil KW - Organic pollution KW - Spatial distribution PY - 2016 AN - OPUS4-38598 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehnik-Habrink, Petra T1 - Evaluation of suitability of PLE, soxhlet, and shaking for extraction of POPs from soil N2 - The occurrence of persistent organic pollutants like polychlorinated biphenyls (PCB) and organochlorine pesticides (OCP) in the environment is still a matter of concern, even years after their use was abolished. Hence, threshold values are regulated by law which reference a number of national and international standards for determination of said contaminants. In this context, soil is an especially difficult matrix, because several defining parameters can vary in a wide range. Organic matter content in particular has a crucial influence on extractability of contaminants because it largely governs formation of non-extractable or bound residues. For this study, four soils of different total organic carbon (TOC) content were generated from uncontaminated reference soil (RefeSol 01-A) and compost which were spiked to contaminant levels representative of the Bundes-Bodenschutz-Verordnung (BBodSchV). These test materials were extracted using accelerated solvent extraction (ASE), Soxhlet extraction, and liquid-liquid extraction. For the latter method, samples were initially extracted for 15 minutes employing acetone. The follow-up extraction step was carried out using cyclohexane and the extraction time varied between 15 minutes and 16 hours. After clean-up, extracts were analysed via gas chromatography-mass spectrometry (GC MS) and with a gas chromatograph equipped with an electron capture detector (GC ECD). Statistical analysis of the experimental values showed that recovery was not dependent on matrix TOC content. Also, no clear preference for a single method could be detected. Concerning liquid-liquid-extraction, it is merely observed that prolonged extraction time results in slightly higher recoveries, while moderate extraction times appear to yield the most robust results. Although Soxhlet and ASE show high recoveries, they also lead to larger standard deviations and are not suitable for determination of thermolabile pesticides. In addition to recovery by different extraction methods, the agreement of values obtained by ECD and MS was evaluated. For ECD, standard deviations are generally higher but overall the values obtained by MS and ECD are comparable. T2 - International network of environmental forensics CY - Oerebro, Sweden DA - 27.06.2016 KW - Pesticides KW - PCB KW - Organic matter KW - Comparison extraction methods PY - 2016 AN - OPUS4-38605 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kjaervik, Marit T1 - MetVBadBugs - XRF and NAP-XPS characterization of drug uptake in multi-resistant bacteria N2 - Multi-resistant bacteria embedded in infectious biofilms are one of the largest future threats in human healthcare. The mechanism of drug uptake and the origin of resistancy is quantitatively not well characterized and understood. Modern X-ray and synchrotron excited spectroscopic methods like XRF and NAP-XPS under ambient pressure conditions and liquid media will add new insights into this field. T2 - 8th Jouint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 7.12.2016 KW - XPS KW - XRF KW - Biofilm PY - 2016 AN - OPUS4-38684 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Nele T1 - Nuclease activity of copper(II)phenanthroline complexes immobilized on silicon nitride films N2 - Copper(II)phenanthroline complexes intercalate into DNA and induce DNA cleavage. Here, we investigate the nuclease activity of copper(II)phenanthroline complexes on Silicon nitride films. 1,10-phenanthroline-5-carboxylic acid is immobilized at Si-NHx bonds via amide coupling followed by the formation of copper(II)phenanthroline complexes. XPS and NEXAFS were carried out at the HE-SGM beamline. T2 - 8th Jouint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 7.12.2016 KW - XPS KW - NEXAFS KW - Copper(II) - phenanthroline - complexe filmss PY - 2016 AN - OPUS4-38685 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rühlmann, Madlen T1 - Development of an online-analysis technique for the determina-tion of plant essential nutrients in soils using XRF and LIBS N2 - The main task of BAM in the I4S project is the development of online analytics for reliable monitoring of major and minor nutrients like K, P, Ca in soil using mobile-XRF (X-ray fluorescence spectroscopy) and mobile-LIBS (laser-induced breakdown spectroscopy). Each method provides fast and simultaneous multi-element analyses which are neccessary for mapping agricultural cropland. The first objective was to design a combined measurement setup for XRF and LIBS. The centerpiece is the rotatable sample plate which enables the measurement of moving samples. Current steps are the optimisation of the parameters for the analysis of soils. T2 - 12. Kolloquium Prozessanalytik CY - Berlin, Germany DA - 28.11.2016 KW - RFA KW - Agricultural KW - LIBS KW - Online KW - Soil KW - Monitoring PY - 2016 AN - OPUS4-38591 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rühlmann, Madlen T1 - Establishment of reference values for sensor based soil analysis N2 - Production of soil reference materials (for project partners) is integrated into the project „X-ray fluorescence, laser-induced breakdown spectroscopy (and Raman spectroscopy) as tools for a site-specific management of soil fertility“. BAM provides good analytics which is necessary for measuring the right values. Why is it important to have reference values? They enable the connection of own measuring results to the SI (international system of units) and the comparison with results from other laboratories. The soil reference materials are also needed for the calibration of the matrix dependent methods laser-induced breakdown spectroscopy (LIBS) and X-ray fluorescence analysis (XRF). For the production of soil reference materials different steps are required, for example drying, sieving and homogenisation. T2 - BonaRes Statusseminar CY - Leipzig, Germany DA - 14.11.2016 KW - LIBS KW - Reference KW - Homogenisation KW - Calibration KW - RFA KW - Soil PY - 2016 AN - OPUS4-38593 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Büchele, Dominique T1 - Mobile-XRF and -LIBS analysis of soils N2 - The main task of BAM in the I4S project is the development of online analytics for reliable monitoring of major and minor nutrients like K, P, Ca in soil using mobile-XRF (X-ray fluorescence spectroscopy) and mobile-LIBS (laser-induced breakdown spectroscopy). Each method provides fast and simultaneous multi-element analyses which are neccessary for mapping agricultural cropland. The first objective was to design a combined measurement setup for XRF and LIBS. The centerpiece is the rotatable sample plate which enables the measurement of moving samples. Current steps are the optimisation of the parameters for the analysis of soils. T2 - BonaRes Statusseminar CY - Leipzig, Germany DA - 14.11.2016 KW - RFA KW - Agricultural KW - LIBS KW - Online KW - Soil KW - monitoring PY - 2016 AN - OPUS4-38594 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Madkour, Sherif T1 - Evidence of a three-layred structure in ultrathin PVME and PVME-PS blend films by nanosized relaxation spectroscopy N2 - In the course of miniaturizing modern technology down to the molecular scale, much remain unknown about the materials behavior and the deviations from the bulk that might arises from confinement effects. Here, a combination of nano-sized relaxation spectroscopies (Broadband dielectric spectroscopy (BDS) and Specific heat spectroscopy (SHS); employing AC nanochip calorimetry) were utilized to investigate the glassy dynamics of ultra-thin films of Poly (vinyl methyl ether) (PVME) and of blends PVME / Polystyrene (PS) 50:50 wt-%,, which are miscible in bulk (thicknesses: ca. 8 nm – 160 nm, film thickness was controlled by ellipsometry, film topography by AFM). Both methods are sensitive to different probes; where SHS senses entropy fluctuations while BDS measures dipole fluctuations. For BDS measurements, a recently developed nano-structured electrode sample arrangement is employed, where ultra-thin films are spin-coated on an ultra-flat highly conductive silicon wafer, sandwiched between a wafer with nanostructured SiO2 nano-spacers with heights between 35 nm and 70 nm. For PVME films, two thickness independent processes were observed and interpreted to be the α-processes of a bulk-like layer and a process due to an absorbed layer to the substrate. This adsorbed layer further undergoes a confinement effect that results in the localization of the segmental dynamics, which results in an Arrhenius-like temperature dependence. A detailed analysis of the dielectric strengths of both processes reveals that the thickness of the adsorbed layer decreases with increasing temperature, while that of the bulk-like layer increases. For the blend system, by measuring the dynamic Tg in dependence of the film thickness, SHS showed that the Tg of the whole film was strongly influenced by a nanometer-thick surface layer at the polymer/air interface due to a self-assembling process. The dynamic Tg obtained from the SHS measurements decreased with decreasing film thickness. On the other hand, BDS measurements showed a completely different behavior. At high temperatures, the temperature dependence of the relaxation times of the films follows that of bulk-like PS/PVME; obeying the VFT-law. With decreasing temperature, the temperature dependence deviates from the VFT to an Arrhenius law; where the apparent activation energy decreases with decreasing film thickness. This is the first example where confinement induced changes were observed by BDS for ultra-thin films. All results were analyzed in detail in a comprehensive discussion. T2 - Polydays 2016 CY - Potsdam, Germany DA - 28.09.2016 KW - Ultra-Thin films PY - 2016 AN - OPUS4-38188 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bettge, Dirk A1 - Sonnenburg, Elke A1 - Klinger, Christian T1 - Metallographische Zielpräparation von Ungänzen im Zusammenspiel mit ZfP-Methoden N2 - Oft sind von außen nicht sichtbare „Ungänzen“ im Innern die Ursache für das Versagen von Bauteilen. In manchen Fällen genügt eine herkömmliche metallographische Präparation, um der Schadensursache auf die Spur zu kommen. In anderen Fällen aber sind die Ungänzen zu klein oder ihre Lage zu ungewiss, um sie mit zufälligen Schnitten zu treffen. Zudem würde man durch Fehlversuche das Bauteil zu stark schädigen und so wertvolle Spuren verlieren sowie die weitere Untersuchbarkeit einschränken. In solchen Fällen ist es im wahrsten Sinn des Wortes zielführend, die Ungänzen mit Hilfe eines räumlich abbildenden ZfP-Verfahrens zu lokalisieren und dann mit den erhaltenen Koordinaten eine metallographische Zielpräparation präzise durchzuführen. Als Methoden kommen z.B. Mikro-Computer-Tomographie (µCT) und Tauch-Ultraschall in Frage. Bauteile können kleine elektronische Komponenten sein, aber auch große Bauteile wie Wellen aus Fahrzeugen oder Anlagen. T2 - Metallographietagung 2016 CY - Berlin, Germany DA - 21.09.2016 KW - Metallographie KW - ZfP KW - Schadensanalyse PY - 2016 AN - OPUS4-38190 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bettge, Dirk A1 - Sturm, Daniel A1 - Goldbeck, Hennig T1 - Metallographische Untersuchungen an gebrochenen Hüftprothesen mit Schaftadapter N2 - Modulare Hüftprothesen können individuell der Anatomie des Patienten angepasst werden und haben dadurch eine positive Auswirkung auf dessen Lebensqualität. Unter Betriebsbelastung sind in der zusätzlichen Konusverbindung zwischen Schaft und Kopfteil Relativbewegungen möglich. Selbst an Titan-Bauteilen bewirken diese durch Verletzung der Passivschicht Reibkorrosion und infolgedessen Spaltkorrosion. Verunreinigungen wie z.B. Knochenrückstände in der Konusverbindung bewirken eine erhöhte Relativbewegung und führen zusätzlich zu einer örtlichen Spannungsüberhöhung durch lokale Pressung. Die an der Mantelfläche des Schafts entstehenden Korrosionsdefekte reduzieren die Schwingfestigkeit des Schafts erheblich, so dass dort Schwingrisse initiiert werden können, welche dann durch die üblichen zyklischen Schwell-Biegebelastungen bis zum Restgewaltbruch wachsen. T2 - Metallographietagung 2016 CY - Berlin, Germany DA - 21.09.2016 KW - Metallographie KW - Fraktographie KW - Schadensanalyse PY - 2016 AN - OPUS4-38191 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosu, Dana-Maria T1 - The accuracy and reproducibility in thickness determination of thin films using SE N2 - Maintaining a consistent product quality is critical for the thin film industry. Therefore, the development of highly accurate protocols able to detect variations and nonidealities in manufactured thin film devices is essential and helps improve production quality and decrease manufacturing costs. The present work will discuss the accuracy and reproducibility in the determination of the thickness of thin films relevant for optoelectronic industry using spectroscopic ellipsometry, starting with the importance of set-up calibration, the need for very well defined calibration standards suitable for real devices and not least, the importance of accurate data analysis. As ellipsometry is an indirect method and theoretical modelling is needed to obtain the desired information regarding the investigated samples (e.g. thickness, roughness, optical constants), the model uncertainty has to be discussed and taken into account. If for ideal samples consisting of single layers with well-known optical constants the determination of thickness and roughness is straight forward and pretty accurate, for real samples, more complex theoretical models are needed and extracting accurate information regarding the samples can be very challenging. With careful calibration and a multidisciplinary approach, a combined measurement methodology can be developed enabling reliability, comparability, and accuracy. For production-relevant operation, maintaining the ease of use and scalability of ellipsometry as a technique can also be retained. T2 - EOSAM (European Optical Society Annual Meeting) CY - Berlin, Germany DA - 26.09.2016 KW - Spectroscopic ellipsometry KW - Thin films KW - Film thickness determination KW - Uncertainty PY - 2016 AN - OPUS4-38109 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Segundo, M. T1 - Microsphere biofunctionalization for meso/microfluidic-based automated immunoassays N2 - Immunochromatography and enzyme-linked immunosorbent assay (ELISA) represent selective and sensitive procedures based on solid-phases for separation/detection and quantification of anthropogenic pollutants in the aquatic environment. In contrast with batch-wise procedures, such as microplate-based platforms, automated methods reduce manual handling of reagents, thus increasing overall precision and decreasing time-to-result. Microparticles have been shown to be an adequate support for carrying out immunoassays in meso and microfluidic systems. They offer a wide range of coupling sites for biomolecules such as antibodies, combined with specialised anti-fouling surfaces to prevent non-specific binding and high compressibility for optimum fluidics. In this work we investigated the protein-coupling behaviour of two commercially available microsphere supports (Tentagel® polystyrene-PEG-COOH and PolyAn® PMMA beads with 3D antifouling surface) using DCC/EDC and NHS/S-NHS activation chemistry. The study of coupling conditions (pH, proportion of reagents and type of buffering system) was addressed. The success of the biomodification of the supports was demonstrated by using self-prepared fluorophore-protein conjugates (Fig. 1). Laser-scanning microscopy and flow cytometry were applied for further characterization of the functionalized particles. The applicability of the developed particles will be demonstrated through the design of suspension multiplex assays for the detection, quantification and preconcentration of bioactive substances such as caffeine and carbamazepine, using Lab-on-valve (LOV) platforms. T2 - XXII Encontro Luso-Galego de Química CY - Bragança, Portugal DA - 09.11.2016 KW - Immunoassay KW - Carbamazepine KW - Antibody immobilization KW - Lab-on-valve KW - Microbeads PY - 2016 AN - OPUS4-38208 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Veliz Montes, Cinthya T1 - Addressable immunoarrays: Enhancing the stability of short DNA - directed immobilization surfaces N2 - By using this method it is possible to have a platform that can be used for a multiplex diagnostic immuno-array formed by stable short ODNs. T2 - Biosensors 2016 CY - Gothenburg, Sweden DA - 25.05.2016 KW - DNA KW - Antibody PY - 2016 AN - OPUS4-38553 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Veliz Montes, Cinthya T1 - Addressable immunoarrays: Implementation of 1O2 generator and applications N2 - The demand for sensitive and cost-effective diagnostics Analysis is steadily increasing. Addressable immunoarrays based on matching oligo-deoxynucleotide (ODN) strands have been described before 1,2. Short ODNs (e.g. 10 mers) could be used for addressing but are not stable enough to resist washing steps which lead to a sensitivity reduction. T2 - Analytica 2016 CY - Munich, Germany DA - 08.11.2016 KW - DNA KW - Antibody PY - 2016 AN - OPUS4-38554 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Veliz Montes, Cinthya T1 - Adressable immunoarrays - Implementation of 1O2 generator and applications N2 - The demand for sensitive and cost-effective diagnostic tools is steadily increasing. Short ODNs (e.g. 10mers) could be used for addressable immunoarrays 1,2 but are not stable enough to resist washing steps which lead to a sensitivity reduction. Our aim is to establish a new platform for addressable immuno-arrays using shorter ODNs by increasing their stability via covalent linking. The main strategy consisted in the use of furan-modified ODNs that can be selectively oxidized leading to the formation of a site-specific interstrand cross-link (ICL) Comparison of the surface plasmon resonance (SPR) response shows successful ICL of short DNA duplex on surface. After ICL formation only the binding of the cross-linked DNA duplex with the recognition antibody is stable after regeneration using Na2CO3 (Fig. 1). Figure1. Method for detection of DNA ICL formation using an FITC labeled ODN and an anti-FITC antibody as model system a) Hybridized ODNs are efficiently separated after using Na2CO3 for regeneration b) Oxidation of the furan using 1O2 results in the formation of a stable ICL, which makes the short ODN duplex stable after regeneration T2 - Singlet Oxygen Strategy CY - Gent, Belgium DA - 17.06.2016 KW - DNA KW - Antibody PY - 2016 AN - OPUS4-38555 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Veliz Montes, Cinthya T1 - Unsubstituted, covalently-linked phthalocyanine-C60 fullerene dyads N2 - Were prepared four unsubstituted Pc - C60 fullerene systems, using two different synthetic strategies, via Prato (1,3 - dipolar cycloaddition) or Bingel reactions. The precursor Pcs 1 and 2 were successfully synthesized by cyclotetramerization reaction between TBDPS - protected and unsubstituted phthalonitriles. The surface studies are currently ongoing. T2 - PcsTT2016 Symposium CY - Elche, Spain DA - 27.01.2016 KW - Fullerene KW - Phthalocyanine PY - 2016 AN - OPUS4-38556 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Moldenhauer, Laura A1 - Helmerich, Rosemarie T1 - Experimental feasibility study about moisture in building materials measured with bluetooth N2 - This feasibility study presents how the Received Signal Strength Indicator (RSSI) of a Bluetooth® Low Energy (BLE) signal, transmitted from the BLE-module embedded in building materials with changing moisture content, is damped. The BLE-module (TRANSMITTER) communicates with a mobile Smart Device as tablet or mobile phone (RECEIVER) [Fig. 1]. The measured RSSI indicates to what extend the received signal strength is changed due to moisture, while the transmitted signal strength remains constant. T2 - Danube Adria Symposium DAS2016 CY - Portoroz, Slovenia DA - 20.09.2016 KW - Bluetooth Low Energy KW - Moisture KW - Experimental study PY - 2016 AN - OPUS4-38522 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Characterization of new disinfection by-products of polycyclic musks (AHTN and HHCB) and their metabolites N2 - The polycyclic musks 6-Acetyl-1,1,2,4,4,7-hexamethyltetraline (AHTN) and 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta-ɣ-2-benzopyran (HHCB) are widely used fragrances in cosmetics, products of daily care and cleaning products for households and industry. They are in the focus of interest due to their estrogenic potential. Both compounds can be found at low μg/L concentrations in surface water where they are introduced mainly by sewage treatment plants supplied by municipal wastewater. In order to disinfect wastewater in sewage treatment plants or water in swimming pools, chlorine can be added to water as gas or hypochlorite solution. This disinfectant has a high oxidation potential resulting in the formation of disinfection by-products, the estrogenicity and toxicity of which might differ from their precursor. In this work the behaviour of AHTN and HHCB upon treatment with sodium hypochlorite solution was investigated and chlorinated possible disinfection by-products could be identified as well as a carboxylic acids and lactones derived from AHTN and HHCB. The identified species were characterized by GC-MS, LC-MSn and 1H-NMR. The elucidated structures of potential disinfection by-products are verified by X-ray crystallography. Finally the estrogenicity between the parent analytes and generated transformation products were compared. For that task, MCF-7 assay has been chosen for being most relevant to humans. Moreover metabolism studies were carried out using AHTN, HHCB and their disinfection by-products. T2 - ISEB 2016 CY - Barcelona, Spain DA - 30.05.2016 KW - AHTN PY - 2016 AN - OPUS4-38523 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döge, N. T1 - In situ wide-field two photon microscopy of human hair follicles N2 - In a standard high magnification two-photon microscopy (2PM) setup the scan is achieved by moving the excitation beam inside the beam path limits of the microscope. Thus, the scanning area of the focus is limited by the field of view of the objective lens. As a consequence, the maximum scanning area is optically restricted to a diameter of 0.5 to 0.7 mm which impairs the application in biological and biomedical research. Herein, wide-field 2PM was used to image every dimension of the human hair follicle in whole tissue samples in situ. Therefore, a 2P microscope with a new approach called 2PM FlySCAN was applied. The 2P microscope moves the scan lens in a flying optics setup: The focus of the excitation laser beam is always concentric and collinear with the scan lens. The laser focus is in a fixed axial position to the scan lens. This approach allows to scan a large field of view (7×10 mm2) up to a resolution of 500 nm2 and a scan depth ~ 500 µm without vignetting or distortion. Further, a new en bloc longitudinal imaging mode was implemented which allows to image hair follicles in full length at a glance in a histomorphological correlation without further processing or sectioning. In situ labelling was successfully applied to investigate certain cell populations in the hair follicle which is of highly clinical relevance for various issues. Our results demonstrate that the here used wide-field 2P microscope combined with the en bloc longitudinal imaging mode is a promising approach for the preclinical assessment of the human hair follicle addressing the demand for an appropriate sample preparation and analysis techniques. T2 - Workshop "Advanced microscopy in life sciences" CY - Potsdam, Germany DA - 30.11.2016 KW - Two photon microscopy KW - Imaging KW - Tissue KW - Hair follicles KW - 2PM Fly Scan PY - 2016 AN - OPUS4-38535 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Asadujjaman, Asad T1 - Temperature sensitive aggregation behavior of poly(acrylamide-co-acrylonitrile) in water N2 - Thermoresponsive polymers have shown great potential in applications such as bioseparation, drug delivery and diagnostic. Only few thermoresponsive polymers that present an upper critical solution temperature (UCST), i.e. phase separate from solution upon cooling, in a relevant temperature range have been reported so far. Moreover, the most studied UCST type polymers namely polybetaines are difficult to use under physiological conditions, which significantly restricts their potential applications. Therefore, UCST polymers with sharp and robust phase transition in physiological conditions (in the presence of salts, ions etc.) are highly needed in order to extend the range of applications of this class of polymers. Herein, a robust UCST-type copolymer of acrylamide (AAm) and acrylonitrile (AN) (poly(AAm-co-AN)) was prepared by reversible addition fragmentation chain transfer (RAFT) polymerization[4] and its thermo-induced aggregation behavior in aqueous media was studied. At temperature below the UCST, the copolymer chains were aggregated together. The aggregate size was found to be larger with increasing AN contents and became smaller upon dilution of the copolymer solutions. While above the UCST, the copolymer chains were expanded and weekly associated in solution. The association between the copolymer chains formed smaller aggregates with increasing the AN contents or the dilution of the solutions. A model is proposed to explain such aggregation behavior. T2 - Polydays Konferenz 2016 CY - Potsdam, Germany DA - 28.09.2016 KW - Thermoresponsive polymer KW - UCST KW - Copolymer KW - RAFT PY - 2016 AN - OPUS4-38511 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lüth, Peter T1 - CEQAT-DGHS Ringversuchsprogramm der BAM in Kooperation mit QuoData und PTB N2 - Bei der Bewertung der Verlässlichkeit der im Labor gewonnenen Prüfergebnisse spielen Ringversuche eine entscheidende Rolle. Die Bundesanstalt für Materialforschung und -prüfung (BAM) unterstützt deshalb den weiteren Ausbau des Ringversuchsprogramms des im Jahr 2007 gegründeten Kompetenzzentrums zur Qualitätssicherung für Prüfungen von Gefahrgütern und Gefahrstoffen auf physikalische Gefahren (Centre for quality assurance for testing of dangerous goods and hazardous substances, CEQAT-DGHS). Bei allen bisher untersuchten Prüfmethoden besteht ein Verbesserungsbedarf. Die RV müssen daher zunächst auf die Methodenentwicklung, -verbesserung und -validierung abzielen und nicht auf Leistungstests. T2 - 14. Kolloquium zur chemischen und physikalischen Sicherheitstechnik (BAM-PTB-Kolloquium) CY - Berlin, Germany DA - 14.06.2016 KW - Gefahrgut KW - Gefahrstoff KW - Ringversuch KW - Prüfmethode KW - Validierung KW - Qualitätssicherung PY - 2016 AN - OPUS4-38465 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bresch, Harald T1 - OECD-WPMN sponsorship programme dossiers - a review of the results for particle size N2 - The Organization for Economic Co-operation and Development (OECD) established the Working Party on Manufactured Nanomaterials (WPMN) in 2006. The OECD-WPMN initiated the "Sponsorship Programme for the Testing of Manufactured Nanomaterials", where a defined set of manufactured nanomaterials is tested for their physical/chemical properties, their toxicological potential and their environmental fade. The results of this program have been declassified in June 2015. Having a big set of independent measurements for one endpoint/measurand, has the advantage of really independent comparision of methods. It is surprising what these few data sets already delivered. Nevertheless the amount of data in the OECD-dossiers is still not enough. While we have a lot of data for titanium dioxide, we have only one data set for zinc oxide and very weak data sets for silver nanoparticles. This limits the useablility of the data sets. Regarding the quality of the data, we have seen a very good agreement of TEM and SMPS. This leads to the advice that we should have results for these two methods for each nanomaterial in the sponsorship programme. Another outcome of this draft review is, that currently we cannot compare measurements of agglomerates. This also prohibits the use of DLS as a standard method for size determination. T2 - European Aerosol Conference CY - Tours, France DA - 05.09.2016 KW - OECD KW - Nanopartikel KW - Nano KW - Nanoparticle KW - Nanomaterials PY - 2016 AN - OPUS4-38568 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Philipp, Rosemarie T1 - Certified forensic alcohol reference materials N2 - The poster presents a project proposal for the production and certification of ethanol/water reference materials suitable for the calibration and type approval of breath alcohol analysers. T2 - EURAMET EMPIR Research Potential Review Conference 2016 CY - Rotterdam, The Netherlands DA - 23.11.2016 KW - Reference material KW - Breath alcohol analyser KW - Interlaboratory comparison PY - 2016 AN - OPUS4-38455 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hemmleb, M. A1 - Bettge, Dirk A1 - Berger, D. A1 - Driehorst, I. T1 - 3D surface reconstruction with segmented BSE detector: New improvements and application for fracture analysis in SEM N2 - Application of 4Q-BSE detector and dedicated software enables 3D surface measurements of fracture samples in SEM. 3D surface measurement is independent from magnification and material invariant. Quantitative height measurements require careful detector adjustment and system calibration. Live 3D view allows a fast assessment of topographical features. In addition to SE and BSE imaging, 3D surface data help to analyse and interpret fracture samples. T2 - European Microscopy Congress 2016 CY - Lyon, France DA - 28.08.2016 KW - Topography KW - SEM KW - 3D analysis KW - Fractography PY - 2016 AN - OPUS4-38456 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kind, Thomas A1 - Maierhofer, Christiane T1 - Entwicklung eines innovativen Bodenradars zur Ortung von Objekten im Baugrund N2 - Das Projektziel war die Vermeidung von Schäden bei Erdarbeiten und Ausschachtungen durch Entwicklung eines innovativen Bodenradarsystems mit wesentlicher Verbesserung des räumlichen Auflösungsvermögens bei der zerstörungsfreien Ortung von folgenden Objekten im Untergrund: Gasleitungen, Frisch- und Abwasserleitungen, Leitungen zur Elektrizitäts- und Kommunikationsversorgung aus verschiedenen Materialien und umgeben mit unterschiedlichen Böden mit variierendem Feuchtegehalt. Darüber hinaus ging es um die Reduzierung der Kosten und Erhöhung der Akzeptanz des Verfahrens durch eine schnelle Echtzeit-Interpretation der Messdaten. T2 - Fachtagung Bauwerksdiagnose - Praktische Anwendungen Zerstörungsfreier Prüfungen CY - Leipzig, Germany DA - 25.10.2001 KW - räumliches Auflösungsvermögen KW - zerstörungsfreie Ortung KW - Echtzeit-Interpretation PY - 2001 AN - OPUS4-36559 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mielentz, Frank T1 - Zerstörungsfreie Risscharakterisierung in Betonbauteilen mit Ultraschall N2 - Die Risstiefenbestimmung in Festen Fahrbahnen ist hinsichtlich der Dauerhaftigkeit der Konstruktion von wesentlichem Interesse. Im Rahmen eines gemeinsamen Forschungsvorhabens mit der DB AG wurden aus der Literatur bekannte Ansätze bewertet und darauf aufbauend ein Verfahren zur bildgebenden Rissdarstellung entwickelt. Rissüberbrückende Bewehrung sowie Kontaktstellen zwischen den Rissflanken wirken als Schallbrücken und erschweren die Risscharakterisierung, wie bei einem Einsatz an einer Betriebserprobungsstrecke festgestellt wurde. Ein aus der Literatur bekanntes Verfahren der einfachen Laufzeitmessung erwies sich für die Tiefenbestimmung von realen verunreinigten Rissen als ungeeignet. T2 - Fachtagung Bauwerksdiagnose - Praktische Anwendungen Zerstörungsfreier Prüfungen CY - Leipzig, Germany DA - 25.10.2001 KW - Risstiefenbestimmung KW - Laufzeitmessung KW - bildgebende Rissdarstellung PY - 2001 AN - OPUS4-36564 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Möhlmann, Lennart T1 - Investigation on the photocatalytic degradation of toluene, butyl acetate and limonene under UV and visible light irradiation N2 - The photocatalytic degradation of three indoor air relevant volatile organic compounds (VOC), namely toluene, butylacetate (BuAc) and limonene was investigated both under UV and visible light using modified TiO2 as photcatalyst. The new materials feature a high reactivity under UV light and, compared to pure TiO2, a significantly enhanced reactivity under blue light irradiation for the decomposition of BuAc (up to 39% degradation). T2 - 9th European meeting on Solar Chemistry and Photocatalysis: Environmental Applications (SPEA) CY - Straßburg, France DA - 13.06.2016 KW - Photocatalysis KW - TiO2 KW - VOC degradation KW - Air purification PY - 2016 AN - OPUS4-36824 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schade, U. T1 - Estimation of THz waveforms for material characterization of stratified objects N2 - The poster discusses theoretically and exemplarily the influence of the materials and experimentally selected situation on the shape and size deformation of a detected pulse signal previously reflected on a three layer sheet. T2 - 41st International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2016) CY - Copenhagen, Denmark DA - 25.09.2016 KW - THz spectroscopy KW - Pulse reflection KW - Pulse shape analysis KW - Optical layer model PY - 2016 AN - OPUS4-37639 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zscherpel, Uwe T1 - Worldwide BAM Certification of Radigraphic Image Detectors for the NDT Market – Status of 2016 N2 - Der Status der weltweiten BAM Zertifizierung im Bereich Zerstörungsfreie Prüfung für radiographisch Bilddetektoren wird dargestellt sowie die an der BAM geschaffenen normativen Grundlagen dazu. N2 - The Poster shows the status of 2016 in BAM certification of radiographic image detectors for industrial radiology for nondestructive testing. BAM was generating first the basis by worldwide standardization activities and released later certificates on request of the device manufacturers using these Standards a base for certification. T2 - BAM-Evaluierung durch den Wissenschaftsrat 2016 CY - Berlin, Germany DA - 16.02.2016 KW - Castings KW - NDT KW - RT KW - Radiography KW - Discontinuities KW - Catalogues KW - Welds PY - 2016 AN - OPUS4-37735 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias A1 - Schukar, Vivien T1 - Intelligent automatic validation of structure-integrated fibre optic strain sensors N2 - Identification of physical faulty fibre optic strain sensors embedded in safety-relevant structures or systems and detection of abnormal measurement data to prevent misinterpretation of critical operating parameters and misleading of management and control systems. T2 - 33rd Danubia- Adria Symposium on Advances in Experimental Mechanics CY - Portorož, Slovenia DA - 20.09.2016 KW - Fiber bragg grating KW - Magnetic field KW - Magnetostrictive metal coating KW - Self-diagnostic fiber optical sensor PY - 2016 AN - OPUS4-37642 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias A1 - Neumann, Patrick P. T1 - Validation of membrane-based linear soil gas sensors – results from repetitive CO2 injection experiments performed in the field N2 - This work presents first results from repeti-tive CO2 injection experiments performed on a recently built-up 400 m² soil test field with gas injection system. The test field contains 48 membrane-based linear gas sensors that were installed in several depths of the test field. Sensors for measuring meteorological parameters (e.g., wind / rain) and the parameters soil temperature, soil moisture, and groundwater level were installed additionally. A more de-tailed description of the test field setup can be found in. A short description of the mem-brane-based linear gas sensors’ functional prin-ciple can be found in. T2 - 33rd Danubia- Adria Symposium on Advances in Experimental Mechanics CY - Portorož, Slovenia DA - 20.09.2016 KW - Distributed linear sensor KW - Gas distribution mapping and gas source localization KW - Gas storage areas KW - Membrane-based gas sensing KW - Subsurface monitoring PY - 2016 AN - OPUS4-37643 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yildirim, Arda T1 - Structure and dynamics of 2,3,6,7,10,11-hexakis[hexyloxy] triphenylene in nanoporous anodic aluminum oxide membranes N2 - Due to their chemical structure, a rigid disk-like aromatic core and flexible alkyl chains attached to the core, discotic liquid crystals (DLCs) can organize and stack themselves into columns in a hexagonal columnar mesophase, a mesophase in between the plastic crystalline and isotropicphase. The overlap of the π orbitals of the aromatic core in the hexagonal columnar mesophase leads to a high charge-carrier mobilitie along the column axis – these columns can be considered as “moleculer nanowires” making liquid crystals a promising class of materials for electronic applications. Previous studies on DLCs showed that the phase behavior of DLCs is susceptible to nano confinement. Here in this study, the thermotropic collective orientational order of 2,3,6,7,10,11 hexakis[hexyloxy] triphenylene (HAT6), a triphenylene based DLC, and the effects of nano confinment on of its phase behavior were investigated by broadband dielectric spectroscopy (BDS) and differential scanning calorimetry (DSC). HAT6 was embedded into nanoporous anodic aluminum oxide membranes by melt infiltration in the isotropic phase under argon atmosphere. The filled membranes have the thickness of 80 µm and the diameter of 15mm and parallel aligned tubular nanopores having the pore diameters of 25, 40, 80 and 180 nm. The filling degree for each sample was checked by thermogravimetric analysis (TGA) in order to ensure complete filling. The bulk HAT6 forms, a hexagonal columnar phase between the isotropic phase above 371 K, and the plastic crystalline phase below 340 K. Unlike the bulk, the confined HAT6 forms two peaks in the heat flow during the plastic crystalline-to-hexagonal columnar phase transition, which might be the evidence of two different phase structures close to the wall and in the pore center. Moreover, the isotropic-to-columnar transition of the confined HAT6 shifts with decreasing pore diameter to lower temperatures. T2 - 9th International Conference on Broadband Dielectric Spectroscopy and its Applications CY - Pisa, Italy DA - 11.09.2016 KW - Discotic liquid crystals PY - 2016 AN - OPUS4-37712 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thiele, T. A1 - Borcherding, H. A1 - Carl, Peter A1 - Schedler, U. T1 - Mastering the Challenge of Fluorescence Intensity Calibration N2 - The calibration of fluorescence signals in assays as well as in biological systems is a key requirement. Especially for quantitative studies of living cells, e.g. expression of biomolecules the generation of concentration-proportional analytical statements obtained by the fluorescence intensity plays a significant role. This also applies for cell assays like immunofluorescence assays. Also, the determination of local concentrations of target proteins within cells or within their environment is a major challenge in modern biology. Proper calibration of the fluorescence imaging systems is the prerequisite to ensure that test results from different instruments and different test environments are comparable. The existing calibration solutions for fluorescence imaging systems, however, mostly depend on simple instrument calibration without reference to absolute physical standards or with insufficient stability for multiple measurements. In order to obtain the necessary quantitative information, it is required to calibrate both instruments and the corresponding assays, ideally with one calibrating system. We present several new calibration tools for the most commonly used platforms for cytometry, i.e. fluorescence microscope based systems and flow cytometry based systems. They are comprised of ultra-stable fluorophores that are encapsulated in bio- and cell-compatible polymer matrices. Each tool is tailored to the specific requirements of the different read-out platforms. Both re-usable single-color calibration slides for fluorescence microscopes as well as new multi-color calibration beads are presented. The traceability of the calibration tools to international standards and the wide calibration range of the fluorescence intensity are illustrated. They are thus suitable for calibration of the signal over concentration and quantum yield to that of the targets. T2 - DGFZ 26th Annual Meeting CY - Berlin, Germany DA - 05.10.2016 KW - Flow Cytometry KW - Fluoresence KW - Calibration PY - 2016 AN - OPUS4-37714 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilling, Markus T1 - Degradation of PE-HD induced by liquid media - FNCT testing N2 - The Full-Notch Creep Test (FNCT) is widely used to characterize the slow crack growth (SCG) behavior of polyolefin materials in “inert” media as well as effects of environmental stress cracking (ESC) in which the medium has decisive influence on damage mechanism and time to failure tf*. Usually the FNCT is applied as a standardized testing method (ISO 16770) using a few universal liquid media, such as solutions of Arkopal N 100 (detergent). Selected relevant PE-HD materials are investigated also in real media and influences of temperature and geometry of specimen and notch are explicitly addressed. The investigations comprise also the ESC behavior of PE-HD in media that are sorbed to a significant extent – such as Diesel and Biodiesel – based on comparison with samples previously saturated with those media. T2 - PolyDays 2016 CY - Potsdam, Germany DA - 28.09.2016 KW - Sorption KW - Environmental stress cracking KW - Slow crack growth KW - PE-HD KW - FNCT PY - 2016 AN - OPUS4-37716 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert A1 - Wilsch, Gerd A1 - Schaurich, Dieter A1 - Wöstmann, Jens T1 - Application of LIBS in civil engineering for the analysis of concrete N2 - Our aim is the application of LIBS as a simple, quasi on-line method for the non-destructive testing of concrete. Concrete is naturally inhomogeneous. Therefore we must take into account the local variation of the element composition using a statistical analysis. Depending on how much cement and aggregate is measured with each laser pulse, a scan on the surface of a concrete specimen produces a distribution of points in the Rankin diagram which is used to characterise the concrete. T2 - First International Conference on Laser Induced Plasma Spectroscopy and Applications CY - Tirrenia, Italy DA - 08.10.2000 KW - Element composition KW - Statistical analysis KW - Rankin diagramm PY - 2000 AN - OPUS4-36539 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilsch, Gerd A1 - Schaurich, Dieter A1 - Wöstmann, Jens A1 - Wiggenhauser, Herbert T1 - Nachweis von Hydrophobierungsmitteln mit Laser Induced Breakdown Spectroscopy N2 - Die Eignung des Verfahrens der Laser Induzierten Breakdown Spectroscopy (LIBS) zur Kontrolle einer ausreichenden Beschichtung und zur Bestimmung der Schichtdicke von Hydrophobierungsschichten auch im Rahmen wiederholender Messungen sollte untersucht werden. Mit LIBS kann die Elementverteilung orts- und tiefenaufgelöst in oberflächennahen Bereichen quasi on-line bestimmt werden. Es ist keine Probenpräparation notwendig. Wiederholende Messungen würden das vorzeitige Erkennen beschädigter Beschichtungen ermöglichen, wodurch kostspielige Sanierungsmaßnahmen vermieden werden. T2 - Fachtagung Bauwerksdiagnose - Praktische Anwendungen Zerstörungsfreier Prüfungen CY - Leipzig, Germany DA - 25.10.2001 KW - Beschichtung KW - Schichtdicke KW - Elementverteilung PY - 2001 AN - OPUS4-36540 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maierhofer, Christiane A1 - Wöstmann, Jens T1 - Ortung von Hohlstellen in Mauerwerk und Betonstrukturen mit dem Impulsradar N2 - In den letzten Jahren hat sich das Impulsradar als zerstörungsfreies Prüfverfahren im Bauwesen insbesondere zur Ortung von metallischen Einbauteilen wie z. B. schlaffer und vorgespannter Bewehrung in Betonbauteilen immer stärker durchgesetzt. Systematische Laboruntersuchungen und Fallstudien zeigen aber auch, dass das Verfahren sehr gut zur Ortung von Hohlstellen sowohl in Mauerwerk als auch in Betonstrukturen geeignet ist. Das Radarverfahren arbeitet nach dem Impuls-Echo Prinzip. Dabei wird von der Sendeantenne ein sehr kurzer elektromagnetischer Impuls ausgesendet (ca. 3 Halbwellen), der an Grenzflächen im Material (Änderung der Dielektrizitätskonstanten) und bei nicht zu dicken Bauteilen auch an der Rückseite reflektiert und von der Empfangsantenne detektiert wird. Bei den hier vorgestellten Messergebnissen wurden eine 900 MHz sowie eine 1,5 GHz Antenne in Kombination mit einem kommerziellen Radargerät eingesetzt. T2 - DGZfP-Jahrestagung CY - Berlin, Germany DA - 21.05.2001 KW - Metallische Einbauteile KW - Impuls-Echo Prinzip KW - Bodemuseum Berlin PY - 2001 AN - OPUS4-36541 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seidler, Oliver T1 - Helium leak testing of dangerous goods packagings N2 - Abstract. The International Dangerous Goods Regulations prescribe the immersion under water method (“bubble test”) as standard method for the leakproofness test of dangerous goods packagings. But this test procedure acts as a test method for leak localisation, not for quantitative leakage rates measurement. Additionally, the sensitivity in detecting leaks of small diameters is restricted, depending on the test liquid and the test pressure. The bubble test is not suitable for a comparison with quantitative limit leakage rates based on realistic transport conditions. This is especially important when estimating the risk of the formation of an explosive atmosphere during the intercontinental carriage of dangerous goods packagings in freight containers. To compare measured leakage rates with limit leakage rates, a quantitative leak testing procedure is required. Therefore a new approach for dangerous goods packagings is implemented: The pressure technique by accumulation using Helium as a tracer gas. This work presents the test equipment necessary for the quantitative measurement of Helium leakage rates through closures of different kinds of dangerous goods packagings. The essential steps to achieve good repeatable results are: A controlled Helium filling process to reach a defined test pressure in the test sample, a sufficient homogenisation of the Helium-air-mixture inside the test sample and the ensuring of a constant pressure level of the test sample during the test. The Helium loss rate of the accumulation chamber has to be measured separately to receive a correction factor for the measured leakage rates. Different constructional measures are introduced to prevent a disturbing influence of the Helium leakage rate of the filling valves on the measurement results. Methods to estimate the disturbing effect of Helium permeation through permeable parts of the test sample are also presented. As a supporting method for the experimental investigations the Helium sniffer test can be applied. This practical application-oriented advice can enable other users to establish a pressure technique by accumulation for their own technical field. T2 - 19th World Conference on Non-Destructive Testing CY - Munich, Germany DA - 13.06.2016 KW - Gefahrgutverpackungen KW - Dichtheit KW - Helium KW - Überdruckverfahren PY - 2016 AN - OPUS4-36638 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Stephan T1 - Monoclonal Antibodies against Diclofenac N2 - Mittels Festphasensynthese konnte ein Amid aus Diclofenac und 6-Aminohexansäure synthetisert werden. Dieses Hapten wurde an Trägerproteinen gekoppelt. Diese wurden für Immunisierungen und als Coatingantigene existierender Antikörper eingesetzt. Die Coatingantigene bewirkten eine Verbesserung etablierter indirekter ELISA mit kommerziell verfügbaren Antikörpern. Positive Immunantworten auf Diclofenac in der Immunisierung wurden bereits nachgewiesen. N2 - Diclofenac is a widely used drug against fever, inflammation, pain, and rheumatic diseases. An average of 70 % of the ingested diclofenac is excreted in the urine. Thus, 63 tons are introduced into the water cycle in Germany. Due to insufficient removal of diclofenac in wastewater treatment plants, residues of diclofenac can be found in surface water and sometimes in drinking water It exist a polyclonal against diclofenac and monoclonal antibodies against diclofenac and it`s metabolites. There all based on direct couling of diclofenac on proteins via carboxylic functions. However it was imagined advantageous to introduce a heterobifunctional spacer between the analyte and the carrier protein. Aceclofeac is commercial available. All other spacers can only be introduced with solid phase synthesis. T2 - Wasser 2016 CY - Bamberg, Germany DA - 02.05.2016 KW - Diclofenac KW - Proteinkonjugate KW - Haptensynthese KW - Monoklonale Antikörper KW - Monoclonal antibodies KW - Haptenes KW - Protein conjugates PY - 2016 AN - OPUS4-36707 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abad Andrade, Carlos Enrique T1 - Determination of perfluordecalin in consume care products by use of GF-HR-CS-MAS N2 - The introduction of HR-CS-MAS instrumentation, as it is shown in Fig. 1, provides a new way for the determination of non-metals including fluorine via molecular absorption. We present a sensitive and fluorine-specific method for total fluorine determination in fifteen consume care products in which perfluordecalin were declared (nail polishes, eye shadows and body creams). After pyrohydrolytic digestion of samples, fluorine content was determined by GF-HR-CS-MAS. Calcium was used as a molecule forming element and the molecular absorption of calcium monofluoride (CaF) at the wavelength 606.440 nm was used for its quantification. No matrix effect was observed. Analytical signal depends only on the fluorine concentration and therefore pure sodium fluoride NaF was used as calibration standard. The use of zirconium oxide nanoparticles as permanent modifier improves the limit of detection (from 0.2 to 0.1 ng) and characteristic mass (from 0.10 to 0.05 ng) from a previous reported method. These results were also compared with ISE method (standard DIN 51-084) and no significant difference was found T2 - Bremen Flourine Days CY - Bremerhafen, Germany DA - 03.07.2016 KW - Perfluordecalin KW - Consume care products KW - High resolution continuum source absorption spectrometry PY - 2016 AN - OPUS4-37481 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gottlieb, Cassian T1 - On-site carbon analysis of coal using a mobile LIBS system N2 - The information about the chemical composition of coal is of great interest during mining, sorting and processing. Due to great variations of the soil layers the quality of coal suffers great fluctuations during mining because of adjoining rocks [1-6]. To provide on-site analysis of coal the application of LIBS as a multi-element method has been tested. Therefore different qualities of coal have been chemically analyzed to get reference values for the water content as well as for the major (carbon) and minor components (ash = Ca, Mg, S, Si). For the LIBS analysis a system using a low energy laser with a wavelength of 1064 nm, pulse energy of 3 mJ, pulse length of 1.5 ns and a repetition rate of 100 Hz have been used. A compact czerny turner spectrometer operating in the UV range (Δλ = 170 nm – 350 nm) have been applied. To provide quantitative concentrations different calibration curves have been evaluated using chemometrics. The system has been validated using internal cross-validation as well as an external set of samples. For the evaluation of the method different figures of merit will be presented. After applying LIBS for coal analysis in the laboratory a LIBS system for the on-site analysis has been tested during the mining process. T2 - 9th International Conference on Laser Induced Breakdown Spectroscopy (LIBS2016) CY - Chamonix, Switzerland DA - 12.09.2016 KW - LIBS KW - On-site LIBS KW - Coal PY - 2016 AN - OPUS4-37420 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gottlieb, Cassian T1 - Damage assessment of infrastructures using a mobile LIBS system N2 - Reinforced concrete structures like bridges and parking decks are subject of corrosion of the reinforcement if chlorides from thawing salts or sea water penetrating into the concrete. For the determination of the expected life time normally samples are taken by borehole cuts or drilling of cores. These samples are taken to the lab and standard chemical methods are used for evaluation. As an alternative a fast and reliable onsite technique which gives results just in time is needed. In cooperation with industrial partners and BAM a mobile LIBS system for the on-site application of LIBS in civil engineering has been developed. The mobile system uses a low energy laser with a pulse energy of < 3 mJ, a wavelength of 1064 nm, a pulse width of 1.5 ns, a repetition rate of 100 Hz and a NIR-spectrometer in combination with a scanner to map areas of up 170 mm x 140 mm. In this work the correlation between exposures of the concrete surface due to chlorides and their ingress profiles will be shown. Quantitative ingress profiles are evaluated and compared with standard analysis. T2 - 9th International Conference on Laser Induced Breakdown Spectroscopy (LIBS2016) CY - Chamonix, France DA - 12.09.2016 KW - LIBS KW - Concrete KW - Mobile system KW - On-site analysis KW - Civil engineering PY - 2016 AN - OPUS4-37422 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Babutzka, Martin T1 - Corrosion investigations by using gel-type electrolytes N2 - In the presentation different zinc coatings are presented and investigated. Their naturally formed protective layers are electrochemically characterized and corrosion relevant values are determined by using a gel pad based on polysaccharide. The corrosion relevant values allow the differentiation of various zinc coating systems and can describe the current protective effect provided by the coating. It is shown that gel-type electrolytes influence protective layers and coatings considerably less than corresponding bulk electrolytes. From the results it is evident that gel-type electrolytes represent a viable and promising field in corrosion research.zeige mehr T2 - EUROCORR European Corrosion Congress 2016 CY - Montpellier, France DA - 11.09.216 KW - Corrosion investigations KW - Gel-type electrolytes KW - Zinc coatings PY - 2016 AN - OPUS4-37496 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Carvalho, Margarida T1 - Addressable Immunoarrays: Protein-Nucleic Acid Conjugate Production N2 - Immunoassays are analytical methods used to track both clinical and environmental parameters. Antibodies or other proteins with similar recognizing activity, are employed, often immobilized onto a modified surface. Addressable microarrays are based on single-stranded DNA oligonucleotides which are normally used to detect aptamers or relevant gene sequences. The use of antibody-oligonucleotide conjugates allows non-directed antibody immobilization from an immunoassay to be converted into DNA hybridization events on the array. Consequently, the diagnostics platform is multiplexed and addressable. Figure 1 is a model representation of the whole biosensor construct. In brief, a surface is coated with streptavidin, and decorated with biotin-modified oligonucleotides of a controlled size and known sequence. These oligonucleotides on the surface also contain a furan motif, which upon irradiation and in the presence of a photosensitizer, is oxidized via single oxygen to a reactive intermediate which crosslinks the immediate opposing base when hybridized with its complementary strand [1]. Antibody-oligonucleotides conjugates still display several concerns due to their heterogeneicity, difficulty of characterization and high price [2]. The being the case, we aim at developing stable, robust, reproducible and well characterized quimeras for the application on te above described immunoarray. Mild chemical conditions are crucial for the antibody stability, therefore bivalent crosslinkers have been employed [2]. Even though the use of these bilinkers is standard for other substrate conjugation (i.e., enzymes, drug payloads, etc.), there is no literature available on the conjugation of small oligonucleotides (< 30 mer) to antibodies using this method. Several protein-nucleic acid conjugates have been therefore developed, and successfully characterized using MALDI-ToF and gel electrophoresis techniques. T2 - SO2S - The singlet Oxygen Strategy - Final Network Meeting CY - Gent, Belgium DA - 14.06.2016 KW - Antibodies KW - Immunoarrays KW - Nucleic acids PY - 2016 AN - OPUS4-36680 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Plarre, Rüdiger T1 - Invasoren im Kleiderschrank N2 - Die Kleidermotte wird als invasive Art (Neozoon) beschrieben. T2 - Lange Nacht der Wissenschaften, FU Berlin, FB Biologie CY - Berlin, Germany DA - 11.06.16 KW - Kleidermotte KW - Invasive Arten KW - Neozoon PY - 2016 AN - OPUS4-36964 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Altenburg, Simon T1 - Thickness determination of semitransparent isolated solids using the flash method and an analytical model N2 - As groundwork for thickness determination of polymeric surface protection systems for concrete, we present a method for measuring the thickness of isolated semitransparent solids using pulse thermography both in transmission and reflection configuration. An advanced analytical model by Salazar et al. capturing semitransparency is applied. After calibration with samples of well-known thickness, the unknown thickness of samples of the same material can be obtained by fitting. T2 - QIRT 2016 CY - Gdansk, Poland DA - 04.07.2016 KW - Thermography KW - Analytical model KW - Surface protection KW - Concrete KW - Semitransparency KW - Thickness KW - Flash thermography PY - 2016 AN - OPUS4-36983 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fontana, Patrick T1 - Beton mit funktionalen Oberflächen N2 - Beton ist als Massenbaustoff vielseitig einsetzbar. Eine der neuesten Entwicklungen ist Ultrahochleistungsbeton (UHPC). Seine besonderen Eigenschaften ermöglichen eine zusätzliche Funktionalisierung der Oberflächen, da annähernd beliebige Mikrostrukturen exakt abgeformt werden können. So lassen sich beispielsweise Fassadenelemente aus UHPC bereits bei ihrer Herstellung im Betonfertigteilwerk mit selbstreinigenden Oberflächen ausrüsten. Eine andere Möglichkeit ist eine Anwendung als Datenspeicher. Wie das Beispiel der Schallplatte aus UHPC zeigt, lassen sich Muster, die hier die Schallinformationen enthalten, exakt von einer Matrize kopieren. T2 - Lange Nacht der Wissenschaften 2016 CY - Berlin, Germany DA - 11.06.2016 KW - UHPC KW - Selbstreinigung KW - Datenträger KW - Betonschallplatte PY - 2016 AN - OPUS4-36948 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sieksmeyer, Thorben T1 - Beyond nutrition: pathogen infection drives macronutrient dietary preference in the cockroach Blatta orientalis N2 - Diverse animal species consume toxins, minerals or secondary compounds as an adaptive response to pathogen infection – a process termed self-medication. Recent studies have also shown that macronutrients can play an important role in an individual’s infection response. For instance African army worm caterpillars select a diet rich in protein and low in carbohydrate upon baculovirus infection. Here we investigate whether dietary choice of macronutrients also plays a role in immunity in the omnivorous cockroach: Blatta orientalis. After challenging individual cockroaches with a common entomopathogenic soil bacterium, Pseudomonas entomophila, we conducted food-choice experiments using two artificial diets differing in their relative protein to carbohydrate ratio. We show for the first time that cockroaches are able to self-select a protein-enriched diet as a response to bacterial infection. This is driven by a sharp decline in carbohydrate intake rather than an increase in protein intake. Additionally, infected cockroaches reduced their overall nutrient intake, which is consistent with an illness-induced anorexia-like response. The feeding pattern of bacteria-challenged individuals returned to normality approx 4 days after challenge. We also investigate whether cockroach survival and hemolymph immunity are enhanced in individuals when restricted to a protein-rich vs. carbohydrate-rich diet. Overall, our findings demonstrate that macronutrient preferences follow a general pattern independent of pathogen type. Furthermore, we show that interactions between nutrition and immunity are highly conserved in evolution, highlighted by the fact that caterpillars and cockroaches diverged some 386 million years ago. T2 - 109. Jahrestagung der deutschen Zoologischen Gesellschaft CY - Kiel, Germany DA - 14.09.2016 KW - Self-medication KW - Nutrition KW - Cockroach PY - 2016 AN - OPUS4-37843 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisentraut, Paul T1 - Analysis of microplastics in environmental samples using TED-GC-MS N2 - The presence of plastic debris and especially small plastic particles in marine ecosystems has been recognized in the 1970`s. Since then various other environmental systems all over the world, like rivers, lakes and biota have been found to be polluted by plastics. Lately, agriculturally used land, waste-water treatment and biogas facilities come into focus as possibly relevant distribution vectors. To monitor the situation and investigate distribution pathways, the need for fast and reliable analytical procedures is high. Up to now, there is no standard procedure for sampling, concentrating and analyzing plastic particles in environmental samples. Our group recently reported the development of a new analyzing method for microscale plastic particles, thermal extraction desorption gas chromatography mass spectrometry (TED-GC-MS). This method consists of thermal extraction of the sample via thermogravimetric analysis, collection of the evolved gaseous decomposition products on a solid-phase adsorber and analysis of the loaded adsorber using Thermal-Desorption-GC-MS. This technique utilizes the characteristic decomposition products of polymers for identification and even quantification of plastics in environmental samples. In the present work we investigated samples of fermentation residues taken from a biogas plant. The results of sample preparation, concentration and analysis are presented as well as a comparison with alternative methods. T2 - MoDeSt 2016 CY - Cracow, Poland DA - 04.09.2016 KW - Microplastic PY - 2016 AN - OPUS4-37782 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisentraut, Paul T1 - Analysis of microplastics in environmental samples using TED-GC-MS N2 - The first analysis of environmental samples shows, that the use of TED-GC-MS is suitable to analyse microplastic in environmental samples. Compared to the micro-spectroscopic methods this method is faster and gives good hints to the occurrence of high loadings of MP in environmental samples. In consequence, the method allows the monitoring of the situation and the investigation of MP distribution pathways in environment, to assess the relevance of various inputs. T2 - 7th Late Summer Workshop "Microplastics in the aquatic environment" CY - Haltern am See, Germany DA - 25.09.2016 KW - Microplastic PY - 2016 AN - OPUS4-37785 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Breitenbach, Romy T1 - The role of c-di-GMP in biofilm formation of the filamentous cyanobacterium Nostoc punctiforme N2 - The signaling molecule c-di-GMP is a ubiquitous second messenger in bacterial species including cyanobacteria. C-di-GMP stimulates the biosynthesis of extracellular polymeric substances (EPS) in biofilms and regulates the transition between a motile and a sessile life style in many bacteria. In our study we focus on c-di-GMP function and EPS production associated with biofilm Formation in Nostoc punctiforme, which is known to produce EPS in biofilms and liquid culture. T2 - VAAM-Jahrestagung 2016 CY - Jena, Germany DA - 13.03.2016 KW - Cyanobacteria KW - EPS KW - C-di-GMP PY - 2016 AN - OPUS4-37974 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thiel, Erik T1 - The VCSEL-Array - a Novel High-Power Light Source for (Photo) Thermal Imaging N2 - Within the field of optically excited thermography, full-field thermal imaging is used to characterize materials, to determine thicknesses of layers or to find inhomogeneities such as voids or cracks. Classical light sources, such as flash lamps (impulse heating) or halogen lamps (modulated heating), are hereby specifically used. This has led to the different testing methods lock-in and flash thermography. The VCSEL array promises to merge these excitation methods. Vertical Cavity Surface Emitting Lasers (VCSELs) are laser diodes emitting light perpendicular to their surface. Due to the vertical structure they can be arranged in large arrays of many thousand individual lasers and still be controlled like ordinary diode lasers. Recently a high-power albeit very compact version of such a VCSEL-array became available which offers both the fast timing behavior of lasers and large illumination areas. Moreover, it allows a spatial and temporal control of the heating because individual parts of the VCSEL-array can be controlled arbitrarily in frequency, amplitude, and phase. Although the VCSEL-array has a high potential for a new range of applications, it is too early to proclaim them. As one out of very few labs, we already adopted to this new VCSEL technology and show a thorough characterization and first results obtained with a 2.4 kW device. Specifically, we will discuss - the linearity between control voltage and optical output - the minimal pulse duration - the maximal applicable modulation frequency - optical projection and its influence on the optical output - spatial control of the illumination and thermal wave shaping Our results indicate that a VCSEL-array can be used for conventional impulse (aka flash) thermography whereas pulse duration and power are instantaneously accessible compared to flash lamp excitation. In case of lock-in thermography, we can apply frequencies in excess of 200 Hz without a loss in amplitude or an after glowing of the source, making it attractive for photo thermal applications. Consequently, this means that the VCSEL-array is able to merge the two main excitation methods lock-in and impulse thermography. T2 - 57th Course on Photoacoustic & Photothermal Phenomena CY - Erice, Italy DA - 19.10.2016 KW - VCSEL KW - Thermal Wave KW - Active Thermography PY - 2016 AN - OPUS4-37952 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kapa, Thomas A1 - Hicke, Konstantin T1 - Sicherer Netzbetrieb durch Erkennung von betriebsgefährdenden Zuständen in Hoch- und Mittelspannungs-Betriebsmitteln unter Verwendung von integrierbaren faseroptischen Sensorsystemen ("Monalisa") N2 - Selbstdarstellung des Verbundvorhabens "Monalisa" auf der Konferenz "Zukunftsfähige Stromnetze" 2016 der entsprechenden Forschungsinitiative der Bundesregierung Kurzzusammenfassung der Teilprojekte und F&E-Ziele aller beteiligten Partnerinstitutionen (BAM,TU Berlin, HTW Berlin, BeuthHS Berlin, IPH GmbH) zum Bereich Monitoring von elektrischen Betriebsmitteln mit Hilfe von faseroptischer Sensorik. T2 - Statuskonferenz "Zukunftsfähige Stromnetze" 2016 CY - Berlin, Germany DA - 22.09.2016 KW - Faseroptische Sensoren KW - Kabelmonitoring KW - Betriebsmittelüberwachung KW - Hochspannungsanlagen KW - Verteilte faseroptische Sensorik PY - 2016 AN - OPUS4-38056 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bradley, I. A1 - Otremba, Frank A1 - Birk, A. M. A1 - Bisby, L. T1 - Novel equipment for the study of pressure vessel response to fire N2 - Pressurisation of full-containment pressure vessels in fire is known to be driven by thermal stratification. The predominant mode of heat transfer to the contents (convection from the shell to the liquid phase) results in formation of „hot“ boundary layers. Sub-cooled boiling may also be present. The warm layer rises to the surface through buoyancy and bubble flow, increasing the surface of the liquid above that of the bulk temperature, and hence driving a pressure rise. For reliable prediction of the complex effects governing vessel pressurization a three-dimensional numerical model is required. Work is being undertaken on such a model by other institutions in cooperation with this project. T2 - ASME 2016 CY - Phoenix, Arizona, USA DA - 11.11.2016 KW - Vessels KW - Novel equipment PY - 2016 AN - OPUS4-38433 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Cabeza, Sandra T1 - Low alloyed Mg-Y/RE-Zn alloys: mechanical and corrosion behaviour N2 - Mg-Y,RE-Zn systems present second phases with high thermal stability, promoting the increase of strength and creep resistance at high temperatures. Mg and its alloys have a potential application as biomaterials due to their biocompatibility and degradation behaviour. The dominant corrosion mechanism in those alloys is the microgalvanic corrosion through coupling of the more noble second phases with the Mg matrix, and therefore a low concentration of those was sought. T2 - Mg 2015 CY - Jeju, South Korea DA - 12.10.2015 KW - Magnesium KW - LPSO KW - Corrosion behaviour KW - Mechanichal behaviour PY - 2015 AN - OPUS4-38398 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank A1 - Sklorz, Christian T1 - A new tank design for Hazmat N2 - Initial studies have shown pre-deformed honeycomb structure pressure vessels to have comparable burst pressure to straight steel vessels. It was shown that honeycomp structured tanks have a higher energy absorption than straight steel tanks. Future studies will investigate optimization of the deformed plate, to determine if increased payloads or a reduced wall thickness can be achieved. T2 - ASME 2016 International Mechanical Engineering Congress and Exposition (ICME 2016) CY - Phoenix, Arizona, USA DA - 11.11.2016 KW - Hazmat KW - Tankdesign KW - Honeycomb structure PY - 2016 AN - OPUS4-38399 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönfelder, Thorsten A1 - Otremba, Frank T1 - Temperature distribution during filling of a composite receptacle N2 - The arrangement of the measuring sensors allowed the capture of air flow induced temperatures and material temperatures on various points of the cylinder body. Four significant temperature levels could be observed: Inside the cylinder (far from the wall, close to the wall), inside the aluminium liner and outer surface. Figure 5 shows the temperature distribution after a regular filling process with a filling time of ten minutes. The temperature sensors T1 - T9 are marked with different colors. The corresponding measurement points are shown in Figure 4. Due to the high thermal conductivity of the aluminum liner the induced temperature peaks are quickly derived. A flow-induced exceeding of the maximum approval temperature is not expected. Regarding the safety assessement the results show that the pressure and temperature profilesmustbe taken into account. T2 - ASME 2016 International Mechanical Engineering Congress and Exposition (IMECE2016) CY - Phoenix, Arizona, USA DA - 11.11.2016 KW - Distribution during filling KW - Type III composite pressure receptacles PY - 2016 AN - OPUS4-38404 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sojref, Regine A1 - Nofz, Marianne T1 - Thin and porous sol-gel alumina coatings on a 9% Cr steel as a protection against high-temperature corrosion in power plants N2 - In order to reduce CO2 emissions fossil fuelled power stations with high combustion efficiency are being developed. The increase of the operating temperature, a common way to improve combustion efficiency, leads to enhanced corrosion of heat exchange steel tubes in the power plants. Within the framework of the European project “Production of Coatings for New Efficient and Clean Coal Power Plant Materials” (POEMA)", high temperature corrosion protection coatings are now under investigation. Thin porous sol-gel alumina films are promising candidate coating materials. Coatings were prepared by applying boehmite sols on grinded steel P92 and subsequent heat treatments at temperatures up to 650 °C. Thus a porous layer of worm-like particles was formed consisting of nano-crystallites and amorphous alumina. A dense interface with satisfying adhesion resulted from diffusion of chromium and iron ions out of the steel into the porous coating. However, the film locally exhibited some cracks caused by steep edges in the grinded steel surface. An appropriate substrate pretreatment should avoid this problem. The protection of the steel relies on the barrier function of the alumina coating and the formation of a dense chromia layer at the steel surface. T2 - ICC6 6th International Congress on Ceramics CY - Dresden, Germany DA - 21.08.2016 KW - High-temperature corrosion KW - Alumina KW - Chromium PY - 2016 AN - OPUS4-38354 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosner, M. T1 - Intercomparison of delta26Mg Values in Mg Isotope RMs and Standards N2 - Accurate measurements of stable isotope abundance ratio variations are often reported using artifact based delta-scales, which rely on suitable isotopic reference materials (iRM) for their realization. For example, variations in the 26Mg/24Mg isotope abundance ratio in natural systems are typically reported as delta26Mg values that represents the relative difference between the 26Mg/24Mg ratio measured in a sample relative to its measurement preferably in an iRM. In the past, such delta26Mg measurements were referenced to NIST SRM 980, the initial zero of the delta26Mg scale. With the development of MC-ICPMS, the detection of small but measurable isotopic differences in different chips of SRM 980 became apparent. It was then replaced by a Mg solution (DSM3), the new zero of the delta26Mg scale. A potential replacement iRM for DSM3 has been developed, ERM-AE143. This iRM has also been measured for its absolute isotope amount ratios1,2 making it traceable to the SI. The results of an delta26Mg intercomparison experiment include the Mg iRMs SRM 980, IRMM-009, ERM-AE143, AE144, AE145 standards DSM3 and Cambridge-1. The intercomparison involved 5 expert laboratories, consisting of 3 national metrological institutes (BAM, NIST, PTB) and 2 scientific research laboratories (GFZ Potsdam, UBremen). The iRMs were measured relative to AE143 and cover a range of ≈5 ‰ in delta26Mg. IRMM-009 has the lowest delta26Mg value while DSM3 has the highest, spanning a range in values that covers natural Mg isotope variations. The 2SD reproducibilities of the individual values from the different laboratories range from 0.02 to 0.26 ‰. The mean delta26Mg values, calculated from the laboratory means however show 2SD reproducibilities varing between 0.025 and 0.093 ‰. Propagated measurement uncertainties suggest a standard uncertainty of about 0.1‰ for delta26Mg determinations. 1 JAAS, 2015, 31,179; 2JAAS, 2016, 31, 1440 T2 - Goldschmidt Conference 2017 CY - Paris, France DA - 13.08.2017 KW - Magnesium delta scale KW - Isotope reference material KW - Intercalibration PY - 2017 AN - OPUS4-43995 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Swaraj, Sufal T1 - Core-shell nanoparticles investigated with scanning transmission X-ray microscopy N2 - A scanning transmission x-ray microscopy (STXM) based methodology is introduced for determining the dimensions (shell thickness, core and total diameter) of core-shell nanoparticles which exhibit a strong x-ray absorption contrast and a sharp interface between core and shell material. A low radiation dosage during data acquisition and, therefore, less x-ray beam induced damage of the sample is achieved by recording STXM images only at two predetermined energies of maximum absorption contrast instead of recording a stack of images across the whole absorption edge. A model core-shell nanoparticle, polytetrafluoroethylene (PTFE) cores with polystyrene (PS) shell, investigated at the HERMES beamline is presented for demonstration. This STXM based methodology yields particle dimensions in good agreement with the scanning electron microscopy (SEM) results (deviation equal or less than 10%). Extension of this methodology to core-shell nanoparticles with inorganic core and organic shell will also be presented and the challenges encountered will be highlighted. T2 - 13th SOLEIL Users' Meeting CY - Saint-Aubin, France DA - 18.01.2018 KW - STXM KW - SEM KW - PTFE KW - PS KW - Core-shell nanoparticles KW - Polymers PY - 2018 N1 - Geburtsname von Müller, Anja: Hermanns, A. - Birth name of Müller, Anja: Hermanns, A. AN - OPUS4-43883 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gollwitzer, Christian T1 - Synchrotron based absorption edge tomography for §D characterization of the microstructure of MG-Y-Zn alloys N2 - Absorption edge tomography is a method which exploits the sudden change of the attenuation coefficient, when the photon energy crosses the absorption edge of an element. The beamline BAMline at BESSY II, which is operated by the Federal Institute for Materials Research and Testing, can provide a monochromatized beam in a photon energy range from 5 keV up to 80 keV with a bandwidth of 2%. Together with the microtomography setup, this enables differential tomography sensitive to any element with N >= 24 (Cr) by using an appropriate K- or L-edge in this range. Here, absorption edge tomography at the Yttrium edge is employed to perform a non-destructive 3D characterization of the microstructure of a high strength Mg-Y-Zn alloy. The long period stacking ordered (LPSO) phase which forms fibres in this material was extracted based on the Yttrium content and the fibre length distribution was analysed. T2 - Ninth Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 13.12.2017 KW - Synchrotron KW - Computed Tomography KW - Absorption edge KW - BAMline PY - 2017 AN - OPUS4-43854 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fabry, Çağtay T1 - Sensorgestütztes MSG-Engspaltschweißen mit modifizierter Prozessführung (IGF-Nr. 17.923N / DVS-Nr. 03.111) N2 - Präsentation von Versuchsaufbau und Ergebnissen zu IGF-Projekt 17.923N. Darstellung einer Methodik zur automatisierten Regressionsmodellierung eines Lichtbogensensors zur Höhenführung mittels künstlicher neuronaler Netze durch Einbindung optischer Sensorik als Referenzmesswert. T2 - Sitzung DVS AG V 2.4 „Schweißen mit abschmelzender Elektrode MIG/MAG” CY - Berlin, Germany DA - 16.04.2018 KW - MSG-Engspaltschweißen KW - Automatisierung KW - Lichtbogensensorik KW - Künstliche neuronale Netze KW - Digitalisierung PY - 2015 AN - OPUS4-44543 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Szymoniak, Paulina T1 - Dynamics of nanoscopically confined PVME in thin films of an asymmetric PVME/PS blend N2 - In recent years, substantial efforts have been devoted to investigating nanoscopic confinement of polymers, and its effect on glassy dynamics. Broadband Dielectric Spectroscopy (BDS) was used to study the dynamics of ultra-thin films of PVME/PS 50/50 wt% blend, employing a novel nano-structured capacitor sample arrangement. The investigated system shows a complex dynamic behavior. First, an α-relaxation, related to a bulk-like layer was found. Second, an α’-relaxation was observed, characteristic for dynamically asymmetric blends, where the out of equilibrium dynamics is attributed to weakly-cooperative PVME segments relaxing within a frozen environment of PS segments. Thirdly, for thinnest films, an Arrhenius-like process was dominant in the dielectric spectra, indicating localized fluctuations of the segments. Relaxation rates of this process resembled that of the degenerated α-relaxation of the adsorbed layer, found for pure PVME, thus it was assigned accordingly. For thinnest films, this process undergoes a further confinement, due to the topological constraints, introduced by PS. Such multiple confinement effect has not been reported for ultra-thin films of polymer blends, before this study. T2 - Spring Meeting of German Physical Society CY - Berlin, Germany DA - 12.03.2018 KW - Thin polymeric films PY - 2018 AN - OPUS4-44502 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yildirim, Arda T1 - Collective Orientational Order and Phase Behavior of a Discotic Liquid Crystal under Confinement N2 - Discotic liquid crystals (DLCs) are a promising class of soft matter for electronic applications. This is due to their ability to self-organize into columns in a hexagonal columnar mesophase, driven by the overlapping of the π orbitals of their aromatic cores. This leads to a high charge-carrier mobility along the column axis. Previous studies on DLCs showed that their properties, such as phase transition temperatures and enthalpies, are susceptible to nanoconfinement. In this study, 2,3,6,7,10,11 hexakis[hexyloxy] triphenylene (HAT6) was confined into parallel aligned cylindrical nanopores of anodic aluminum oxide (AAO) membranes by melt infiltration. Furthermore, the pore surfaces of a series of membranes were chemically modified, resulting in a more hydrophobic pore surface than the unmodified ones. Collective orientational order and phase behavior of HAT6 confined into modified and unmodified nanopores of AAO were investigated by broadband dielectric spectroscopy and differential scanning calorimetry respectively. T2 - Spring Meeting of German Physical Society CY - Berlin, Germany DA - 12.03.2018 KW - Discotic Liquid Crystals PY - 2018 AN - OPUS4-44506 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Omara, Shereen T1 - Structure−property relationships of hyperbranched polyamine ester/Ka-DCA nanocomposites N2 - Hyperbranched polyamine ester (HPAE)/ kaolinite nanocomposites were papered via an ex situ (solution-based) method. The kaolinite has been modified by dodecylamine (DCA). SAXS measurements revealed that the Ka interlayer space increased from 0.71 to 3.6 nm-1. A partly exfoliated structure of the HPA/Ka-DCA nanocomposites was proved by SAXS and TEM. By a combination of BDS and SHS, the relaxation properties of the nanocomposites were investigated in dependence on frequency and temperature. The activation energies of γ-relaxation for the nanocomposites were lower than the values found for the pure HPAE. The segmental dynamics (α- relaxation) was found to be screened out by the conductivity contribution. While it is retrieved by SHS employing AC-chip calorimetry. A systematic change of the dynamic glass transition estimated by AC-chip calorimetry was observed, which is in agreement with a behavior expected for a confined sample. The confinement effect of the Ka-DCA nanofillers reduces the glass transition temperature Tg and enhances, meanwhile, the electrical conductivity of the polymer. By comparing the temperature dependence of the dynamic glass transition measured with SHS and that of the dc conductivity measured by dielectric spectroscopy, a decoupling in their temperature dependencies was found. With increasing concentration of the nanofiller, which results in a stronger glass-formation behavior, this decoupling becomes weaker. T2 - Spring Meeting of German Physical Society CY - Berlin, Germany DA - 12.03.2018 KW - Nanocomposites PY - 2018 AN - OPUS4-44522 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Coelho Lima, Isabela A1 - Grohmann, Maria A1 - Niederleithinger, Ernst T1 - Alternative imaging conditions for reverse-time migration N2 - Poster on the evaluation of several imaging conditions for reverse time migration, applied to ultrasonic echo data, tested with synthetic (simulated) dat and real data from a polyamide model. T2 - Jahrestagung der Deutschen geophysikalischen Gesellschaft CY - Leoben, Austria DA - 12.2.2018 KW - Ultrasound KW - Reverse time migration KW - Imaging condition KW - Concrete KW - Polyamide PY - 2018 AN - OPUS4-44583 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ramos, I. I. T1 - Automated bead-based immunoassay for the determination of carbamazepine in wastewater N2 - The improvement of immunoanalytical methods for the determination of pharmaceuticals in wastewaters is a crucial yet challenging endeavor. In this work, the development of an automated miniaturized ELISA based on micro-Bead Injection Spectroscopy (μ-BIS) [1] for the determination of carbamazepine, a widely employed anti-epileptic drug and emergent pollutant [2], was pursued. The experimental workflow comprised the offline functionalization of Sepharose beads with specific anti-CBZ antibodies via affinity immobilization using protein G, and 3 online steps inside the microfluidic analyzer lab-on-valve (LOV): I) packing of the bead column into the detection unit; II) sequential percolation of sample and a CBZ competitor- labeled with horseradish peroxidase (tracer) through the bead column; and III) on-column colorimetric detection employing the enzyme substrate 3,3’,5,5’-tetramethylbenzidine. After each analysis, the bead column was discarded, and the flow cell was washed before receiving new beads. The elimination of manual washing steps is a novel feature compared to batch-wise ELISA, making the method less error-prone and therefore more robust. The replacement of the solid support prevents memory effects and cross-contamination between runs. The use of microparticles as solid support for the molecular recognition elements accounts for high area-to-volume ratios, and low molecular diffusion distances. For that reason, time-to-result was reduced from several hours to less than 10 min. The consumption of reagents was also very low. For instance, only ca. 200 μg of solid support and 900 ng of anti-CBZ antibody were required per determination. At last, the versatility of the LOV platform offers the possibility of adapting the assay to other relevant pharmaceuticals and anthropogenic markers in water. Acknowledgements: Inês I. Ramos thanks FCT (Fundação para a Ciência e a Tecnologia) and POPH (Programa Operacional Potencial Humano) for her grant (SFRH/BD/97540/2013). This work received financial support from the European Union (FEDER funds POCI/01/0145/FEDER/007265) and National Funds (FCT/MEC - Ministério da Educação e Ciência) under the Partnership Agreement PT2020 UID/QUI/50006/2013. Financial support from Deutscher Akademischer Austauschdienst and from Fundação das Universidades Portuguesas under the protocol CRUP-DAAD (Ações Integradas Luso-Alemãs nºE-20/16) is also acknowledged. [1] Gutzman, Y.; Carrol, A. D. Analyst 2006, 131, 809. [2] Murray, K. E.; Thomas, S. M.; Bodour, A. A. Environ. Pollut. 2010, 158, 3462. T2 - ANALÍTICA – 2018 CY - Porto, Portugal DA - 26.03.2018 KW - Lab-on-valve KW - Emerging pollutants KW - Immunoassay KW - Automation PY - 2018 AN - OPUS4-44592 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Saatz, Jessica T1 - Nanocrystals as labeling reagents for bioimaging of clinical cell assays N2 - Imaging of elemental distributions in single cell assays as well as tissue sections can be performed by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). This powerful technique offers precise spatially resolved measurements at the trace and ultratrace level and has been established as an excellent tool to answer analytical, biological and biomedical questions. To date, imaging mass cytometry is already able to simultaneously detect up to 40 cellular targets due to conjugation of isotopically pure lanthanides to affinity binders, e.g. antibodies. To further enhance the ability of multiparametric analysis to more than 100 analytes at once, we investigated lanthanide nanocrystals as new, highly sensitive metal tags for identification of targets in clinical cell assays and tissue samples. Multiparametric analysis will be possible by encoding the lanthanide composition of nanocrystals associated to the affinity binders. Nanocrystals showed remarkable potential for sensitive detection in MS due to high stability and signal amplification compared to e.g. polymer tags, carrying fewer metal atoms. Synthesis of functionalized lanthanide nanocrystals for further bioconjugation was performed with high reproducibility and monodisperse size distribution. For proof of principle, the uptake and distribution of these nanocrystals within the monolayered cell line A549 were investigated by mapping the intensities at subcellular resolution using LA-ICP-MS. It could be shown, that the cells were efficiently labeled with the nanocrystals and mostly accumulate near the nucleus. Additionally, the bioconjugation of the nanocrystals to antibodies and particularly the preservation of the antibody specificity was investigated using Dot Blot experiments. All in all, the results imply high sensitivity and the possibility of multiparametric analysis by doting various lanthanides into the nanocrystals. T2 - ESAS & CANAS 2018 CY - Berlin, Germany DA - 20.03.2018 KW - Bioimaging KW - Nanoparticle KW - Immuno-assay KW - Lanthanide PY - 2018 AN - OPUS4-44593 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ickert, Stefanie T1 - Vacuum ultraviolet light as a new Tandem MS method N2 - Tandem MS techniques are widely used for both, structure and sequence elucidation of biopolymers. Thereby, fragmentation activation is realized by various methods, for example with lasers or collisions with neutral gases. In this study, we present a new Tandem MS system using a commercially available vacuum ultraviolet lamp. On the one hand, this approach provides efficient fragmentation in both ionization modes, positive as well as negative. On the other hand, it enables an additional previously not achieved post ionization of the fragments. While the first results in atypical fragment patterns and, thus provides orthogonal information, the second is crucial especially to identify low abundant ions. T2 - European Mass Spectrometry Conference CY - Saarbrücken, Germany DA - 10.03.2018 KW - Tandem MS KW - Vacuum Ultraviolet PY - 2018 AN - OPUS4-44484 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gawek, Marcel T1 - Growth Kinetics and Molecular Mobility of Irreversibly Adsorbed Layers in Thin Polymer Films N2 - In well-annealed thin polymer films, with non-repulsive polymer/substrate interactions, an irreversibly adsorbed layer is expected to form. These adsorbed layers have shown great potential for technological applications. However, their growth kinetics and molecular dynamics are still not fully understood. This is partially due to the hard accessibility of these layers in thin films. Here, the irreversibly adsorbed layers of homopolymer thin films are revealed by solvent-leaching experiments. First, the growth kinetics of these layers is investigated as a function of annealing times and original film thickness. The thickness, topography and quality of the adsorbed layer is controlled with Atomic Force Microscopy (AFM). Secondly, the molecular mobility of the adsorbed layer is investigated with Broadband Dielectric Spectroscopy (BDS). A recently developed nanostructured capacitor is employed to measure the adsorbed layers with a free surface layer. The results are quantitatively compared and discussed with respect to recently published work. T2 - Spring Meeting of German Physical Society CY - Berlin, Germany DA - 12.03.2018 KW - Thin polymeric films KW - Dielectric spectroscopy PY - 2018 AN - OPUS4-44489 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - van Wasen, Sebastian T1 - Airborne laser-spark for ambient desorption/ionization of liquids N2 - The development and enhancement of new ionization techniques for mass spectrometry often needs to be custom-tailored for specific sampling approaches. Here, a direct sampling ionization technique is presented for ambient mass spectrometry. Ambient mass spectrometry based techniques are typically used to analyze samples in their native states without sample pretreatment. This new design is based on a quasi-continuous airborne plasma which is ignited inside the particulate air via a focused laser irradiation. Desorption and ionization of the analyte molecules are achieved by the laser plasma without reaching the plasma. The ionization process is induced by interaction with nascent ionic fragments, electrons and ultraviolet photons in the plasma vicinity. Previously, this method was solely used for the characterization of solid and gaseous analytes. The sample introduction was occurred via thermal desorption and headspace analysis. This study focuses on the potential applicability of liquid samples. In comparison to previous approaches, the usage of liquid samples has an impact on the stability of typically used plasma of 532 nm. It was necessary to realize an alternative plasma using light of the fundamental wavelength of 1064 nm. That new plasma resulted in a significant more stable and bright plasma and the first laser plasma ionization spectrum was recorded for an analyte in the condensed phase with a mass spectrometer of type LCQ DecaXP. T2 - European Mass Spectrometry Conference 2018 CY - Saarbrücken, Germany DA - 11.03.2018 KW - Laser-spark KW - Laser-induced plasma KW - Ambient mass spectrometry KW - Ambient desorption/ionization KW - DPSS laser PY - 2018 AN - OPUS4-44493 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Online Raman spectroscopy for the quantitative evaluation of a Ralstonia cultivation N2 - Spectroscopic methods possess important advantages for the observation of bioprocesses: they are robust, gain many data within a short time scale, and allow for the measurement of multiple relevant information at the same time. Next to Near-infrared spectroscopy, Raman spectroscopy is increasingly applied as a powerful online tool to monitor bioprocesses. However, Raman spectra may be obscured by straylight, cosmic rays and fluorescence. To achieve the best performance, optimal conditions for spectral quality and stability should be pursued. This comprises not only the choice of highly-sensitive equipment, but also the way of implementation into the process. Here we compared the potential of introducing a sterilized fiber optical Raman probe, and a flow-through cell into the bypass of a stirred tank reactor to monitor an autotrophic cultivation of Ralstonia eutropha where gasses are the energy and carbon sources. Raman spectra were continuously recorded over seven days and 22 samples were taken for the reference analytics of biomass, optical density, and protein. In addition, data for of phosphate and ammonium were available. The quantitative Evaluation of Raman spectra by Partial Least Squares Regression (PLSR) yielded comparable results for both approaches, however, there was a general trend of lower prediction errors with the immersion probe. The better performance of the non-contact optic may be either related to a more representative interaction of the measurement optics with the probe or simply to the absence of probe-fouling, which was observed with the immersion optic in the interstice between window and metal frame. T2 - 5th BioProScale Symposium CY - Berlin, Germany DA - 20.03.2018 KW - Raman spectroscopy KW - Bioprocess KW - Chemometrics PY - 2018 UR - www.bioproscale-conference.org AN - OPUS4-44580 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kauss, N. A1 - Rosemann, Paul T1 - Age-hardening behaviour, microstructure and corrosion resistance of the copper alloyed stainless steel 1.4542 N2 - The copper alloyed stainless steel 1.4542 (X5CrNiCuNb16-4) is used in different areas due to its good mechanical properties and corrosion resistance. Strength and corrosion resistance can be adjusted by the heat treatment, which is of importance for the application of this alloy. The mechanical properties (strength and hardness) are attributed to the dispersive precipitation of the copper rich ε–Phase. The additional precipitation of chromi-um carbides can reduce the corrosion resistance. Different ageing states were produced to investigate the precipitation behaviour with various methods. Furthermore, the influence of cold-rolling on the precipitation behaviour was studied in comparison to a solution annealed state without deformation. The microstructure was studied by SEM and the variations of hardness and magnetic proportion were characterised. The electrochemical potentiodynamic reactivation (EPR) was used to determine the corrosion resistance and detect chromium depletion in all heat-treated states. The results show that a work hard-ening accelerates the precipitation rate, while ageing at 600 °C reduces the corrosion resistance due to chromium depletion. T2 - 20. Werkstofftechnischen Kolloquium CY - Chemnitz, Germany DA - 14.03.2018 KW - Corrosion KW - Heat treatment KW - Stainless steel KW - Corrosion resistance KW - EPR KW - Corrosion testing PY - 2018 AN - OPUS4-44553 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred T1 - Determination of lost paint layers by scanning electron microskopy N2 - The identification of external paint layers on medieval stained glass windows in Lincoln Cathedral is not only of interest for art historians but is also important for the development of conservation proposals. For the gradual reduction and removal of corrosion layers conservators have to take care to preserve any remaining paint layers which are hidden underneath these corrosion and weathering crusts. T2 - Aspects of Glass - Stained Glass - Art at the Glass Surface CY - Cambridge, Great Britain DA - 02.09.2017 KW - Medieval glass composition KW - SEM/EDX KW - Glass conservation PY - 2017 AN - OPUS4-42131 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Flüchtige Kohlenwasserstoffe in Boden - Stand der Technik und seine Grenzen N2 - Die inhalative Aufnahme (Wirkungspfad Boden – Mensch) von MKW bestimmt aus toxikologischer Sicht die Festlegung von Prüfwerten. Somit müssen die leichtflüchtigen Fraktionen quantifiziert werden. Die durchgeführte Robustheitsstudie des genormten Verfahrens umfasst die Ermittlung der Kenndaten der Probenahme, der Probenaufarbeitung und der Instrumentalanalytik. T2 - DECHEMA - Symposium Strategien zur Sanierung von Boden und Grundwasser CY - Frankfurt a.M., Germany DA - 20.11.2017 KW - Flüchtige Kohlenwasserstoffe KW - Kohlenwasserstofffraktionen KW - Bodenanalytik PY - 2017 AN - OPUS4-42943 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scharff, Erik T1 - TF-Projekt Sicherheit von Verkehrsinfrastrukturen - Ausbreitung von LNG in Verkehrstunneln N2 - Schwerlastfahrzeuge (Lkw) werden in Zukunft zunehmend mit tiefkalt verflüssigtem Erdgas (LNG) betrieben. Die verstärkte Nutzung von LNG im Straßenverkehr führt zu neuen Gefährdungen. Insbesondere in räumlich begrenzten Umgebungen wie Verkehrs-tunneln können bei einem unfallbedingten Freiwerden von LNG explosionsfähige Brenngas-Luft-Gemische entstehen, die sich bei Anwesenheit einer Zündquelle explosionsartig umsetzen. Gravierende Schäden für die Bauwerksstruktur und die Verkehrsteilnehmer könnten mögliche Folgen sein. Anhaltspunkt für das Schadensausmaß ist das Volumen der zündfähigen Gaswolke. Durch experimentelle Untersuchungen im Realmaßstab und Modellierung des LNG-Freisetzungsvorgangs unter differierenden Randbedingungen versucht die BAM das allgemeine Gefährdungs-potential verschiedener Szenarien abzuschätzen und daraus Maßnahmen abzuleiten. T2 - BAM Phd Day 2017 CY - BAM, Berlin, Germany DA - 21.09.2017 KW - Verflüssigtes Erdgas KW - LNG KW - Tunnel KW - Gasausbreitung PY - 2017 AN - OPUS4-42949 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Moldenhauer, Laura T1 - Experimental modeling approach for determining the moisture damping exponent of a bluetooth low energy signal in moist building material N2 - We investigated, the damped Received Signal Strength Indicator (RSSI) of a Bluetooth Low Energy (BLE) signal, transmitted from the BLE-module embedded in building materials with changing moisture content, Fig. 1. The BLE-module communicates with a mobile Smart Device as tablet via 2.45 GHz-ISM-frequency band where water dipoles start to oscillate, Fig. 2. The damping model demonstrates this damping effect on RSSI by the abstraction of the reality observed in a real system. Through the reproduction of the active relationships, the system behavior is decomposed in such a way that a separate consideration of the required system parameters is possible. T2 - 34th DANUBIA ADRIA SYMPOSIUM on Advances in Experimental Mechanics (DAS 2017) CY - Trieste, Italy DA - 18.09.2017 KW - Structural health monitoring KW - Long-term monitoring KW - Bluetooth Low Energy KW - BLE KW - Moisture KW - Network Communication KW - Experimental study KW - Modellierung PY - 2017 AN - OPUS4-42966 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koclega, D. T1 - High temperature corrosion resistance of Inconel 686 coatings in aggresive environments N2 - The work presents the microstructure, chemical composition and mechanical properties of Inconel 686 coatings after high - temperature corrosion in environment of aggressive gases. To produce the Ni - base weld overlays the QS Nd:YAG laser beam was used. The substrates were 13Mo4-5 boilers plate steel. Ni - base alloys characterize the excellent high temperature corrosion resistance, good strength and good ability to work in aggressive environments. Applied overlays had a proper combination of the metal substrate in particular small amount of Fe. This could be achieved by the reduction of the melting of the substrate and its dissolution into the overlays. The microstructure, chemical composition of the obtained overlays were investigated by means of a light microscope, a scanning electron microscope (SEM) equipped with the EDS detector. The overlays had cellular-dendritic structure. The variations of the chemical composition (especially Mo, Ni and W ) in the interdendritic and dendritic regions were observed. The interdendritic regions were enriched during solidifications in Mo and W and had lower content of Ni. T2 - EUROCORR 2017 CY - Prague, Czech Republic DA - 03.09.2017 KW - Inconel 686 KW - Corrosion resistance KW - Laser cladding PY - 2017 AN - OPUS4-44197 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - He, Shulin T1 - Defend and disinfect: a flexible role for soldiers in termite society N2 - The first sterile caste to evolve in termites was the soldier. While the importance of soldiers to termite society defense has long been recognized, the contribution of soldiers to other societal functions, such as colony immunity, is less well understood. We explore this issue by examining the role of soldiers in protecting nestmates against pathogen infection. Even though they are unable to engage in grooming behavior, we find that the presence of soldiers of the Darwin termite, Mastotermes darwiniensis, significantly improves the survival of nestmates following entomopathogenic infection. We also show that the copious exocrine oral secretions produced by Darwin termite soldiers contain a high concentration of proteins involved in digestion, chemical biosynthesis, and immunity. The oral secretions produced by soldiers are sufficient to protect nestmates against infection, and they have potent inhibitory activity against a broad spectrum of microbes. Our findings support the view that soldiers may play an important role in colony immunity, and broaden our understanding of the possible function of soldiers during the origin of soldier-first societies. T2 - Congress of the European Society for Evolutionary Biology CY - Groningen, Netherlands DA - 20.08.2018 KW - Termite KW - Immunity KW - Social PY - 2017 AN - OPUS4-44248 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - He, Shulin A1 - Lokatis, S. A1 - McMahon, Dino Peter T1 - Defend and disinfect: a flexible role for soldiers in termite society N2 - The first sterile caste to evolve in termites was the soldier. While the importance of soldiers to termite society defense has long been recognized, the contribution of soldiers to other societal functions, such as colony immunity, is less well understood. We explore this issue by examining the role of soldiers in protecting nestmates against pathogen infection. Even though they are unable to engage in grooming behavior, we find that the presence of soldiers of the Darwin termite, Mastotermes darwiniensis, significantly improves the survival of nestmates following entomopathogenic infection. We also show that the copious exocrine oral secretions produced by Darwin termite soldiers contain a high concentration of proteins involved in digestion, chemical biosynthesis, and immunity. The oral secretions produced by soldiers are sufficient to protect nestmates against infection, and they have potent inhibitory activity against a broad spectrum of microbes. Our findings support the view that soldiers may play an important role in colony immunity, and broaden our understanding of the possible function of soldiers during the origin of soldier-first societies. T2 - 22nd Graduate Meeting in Evolutionary Biology of the German Zoological Society CY - Plön, Germany DA - 12.09.2017 KW - Termite KW - Social KW - Immunity PY - 2017 AN - OPUS4-44249 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - He, Shulin T1 - Differentiation of immune response with castes in termites N2 - Effective immunity is essential for maintaining insect society integrity but the mechanisms that connect immunity at the level of the individual to the level of society are poorly understood. Here, we begin to resolve this issue by addressing the interaction between individual immunity and caste identity in the termite Neotermes castaneus. We characterize the transcriptomic responses of different castes to a general immune challenge by sequencing mRNAs from false workers, soldiers and reproductive following injection with a cocktail of heat-killed pathogens. We found many more genes to be differentially regulated in reproductives (1420 and 398 genes down- and upregulated respectively) than soldiers (90 and 108 genes) or false workers (135 and 71 genes). We go on to conduct a quantitative analysis of the specific changes to immune regulation across the castes following pathogen exposure, before discussing the implications of these findings for our understanding of the evolution of immunity in eusocial termites. T2 - Ecological Immunology Workshop 2017 CY - Blossin, Brandenburg, Germany DA - 28.08.2017 KW - Termite KW - Immunity KW - Caste PY - 2017 AN - OPUS4-44251 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koclega, D. T1 - The microstructure of weld overlay Ni - base alloy deposited on carbon steel by laser QS-Nd:YAG N2 - Ni- base alloys are used as a one of the most important coating material and can be applied in a different environments and elements of devices having various applications. To protect the surface of the material from aggressive gases at high temperature, there are use different kinds of the Ni- base alloys. One of such alloy is Ni-Cr-Mo-W called commercial Inconel 686. This alloy based on NiCr22Mo9Nb (Inconel 625), in which content of molybdenum increased and niobium was replaced with the addition of tungsten, in order to counteract the strong segregation in the microstructure, which results in homogeneity of the chemical composition of the structure. Inconel 686 is also characterized by greater resistance to high temperature corrosion and heat resistance than Inconel 625. The Inconel 686 alloy was deposited on 13CrMo4-5 steel by laser QS - Nd:YAG. In the poster the microstructure (SEM) and chemical composition (EDS) of obtained weld overlays were investigated. T2 - EUROMAT 2017 CY - Thessaloniki, Greece DA - 17.09.2017 KW - Nickel based alloy KW - Laser cludding KW - High temperature corrosion resistance PY - 2017 AN - OPUS4-44195 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan A1 - Patzig, C. T1 - Surface-initiated microstructure formation in glass ceramics N2 - Up to now, the mechanisms of surface nucleation and surface-induced texture formation are far from being understood. Corresponding phenomena are discussed hypothetically or even controversial, and related studies are restricted to very few glasses. As a main drawback, the vast majority of previous work on oriented growth of surface crystals do not consider the possible effects of glass surface treatments (like polishing defects, adhered particles and cracks, …) or ambient annealing conditions (vacuum or atmospheric pressure) which both can influence crystal nucleation and growth. Moreover, very few observations of crystal orientation related to surface crystallization were focused on separately growing crystals. In conclusion, up to now, no systematic studies on initially oriented crystal growth or nucleation from defined active nucleation sites have been pursued. Therefore, the main objective of the proposed project is to gain a basic understanding of the mechanisms of surface-induced microstructure formation in glass ceramics. We shall answer the question whether preferred orientation of surface crystals is the result of oriented nucleation or caused by other orientation selection mechanisms acting during early crystal growth. In both cases, crystal orientation may be caused by the orientation of the glass surface itself or the anisotropy and orientation of active surface nucleation defects. New techniques of experimental characterization of surface-crystallized glasses shall be applied to find answers to the questions posed above. Based on a controlled preparation and annealing of the glass sample surfaces, that includes the defined creation of active nucleation defects, and followed by the microstructural characterization especially during the very early growth stages of separated surface crystals, the orientation relations between defect and initiated surface crystal will be analyzed. In order to gain new insights, a couple of entirely new microstructure diagnostics techniques, including chemically contrasted XRM, laser-based sample preparation for XRM, and 3D electron backscatter diffraction shall be developed or applied. This way, using X-ray microscopy as a pivotal technique for the non-destructive 3D characterization of relatively large samples at superior spatial resolution (but also complemented by other microstructure diagnostics techniques, e.g. TEM elemental mappings at cross-sectioned samples) unprecedented insights into the microstructure evolution upon surface crystallization of model glasses will be gained. T2 - DFG Begutachtungskolloquium (PAK 949/1 und PAK 950/1) CY - Bonn, Germany DA - 07.03.2017 KW - Oberflächenkeimbildung KW - Glaskeramik KW - Orientierung PY - 2017 AN - OPUS4-44221 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koclęga, Damian T1 - Optimization of laser treatment parameters of Inconel 686 overlay weld on carbon steel 13Mo4-5 N2 - The work presents the effects of the change of the laser cladding parameters on microstructure, chemical composition and mechanical properties of Inconel 686 overlays (coatings). To obtain the best quality of these coatings the various parameters of laser cladding such as the power density of the laser beam, the laser beam velocity and overlapping ratio of the weld tracks were applied. The substrates were boilers plate made of the 13Mo4-5 steel. Ni - base alloys characterize by the excellent high-temperature corrosion resistance, good strength and good ability to work in aggressive environments. Applied overlays had a proper combination of the metal substrate in particular small amount of Fe. This could be achieved by the reduction of the substrate melting and its dissolution into the overlays. The microstructure, chemical composition of the obtained overlays were investigated by means of a light microscope, a scanning electron microscope (SEM) equipped with the EDS detector. The overlays had cellular-dendritic structure. The variations of the chemical composition (especially Mo, Ni and W ) in the interdendritic and dendritic regions were observed. The interdendritic regions were enriched during solidifications in Mo and W and had lower content of Ni. T2 - METAL 2017 CY - Brno, Czech Republic DA - 24.05.2017 KW - Laser cladding KW - Overlay KW - Chemical composition KW - Inconel 686 PY - 2017 AN - OPUS4-44464 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jakubowski, Norbert T1 - Quantification of silver nanoparticles at single cell level by mass cytometry N2 - Silver nanoparticles (AgNPs), have a high scientific and commercial impact due to their important antibacterial properties. However, there are serious concerns about their toxicological adverse effects as a consequence of their broad range of applications. Particularly, the impact of AgNPs on cells is not very well understood yet and there is a current demand to develop analytical methodologies providing information about the interaction and distribution of AgNPs at a single cell level. In this research, mass cytometry was used to introduce a new quantitative approach to study the uptake of AgNPs by individual THP-1 macrophages as a cell model system. Here, we show that this methodology provides not only multi-variate phenotypic information of individual cells but enables the quantitative analysis of AgNPs associated to cells in a single measurement by performing an external calibration using AgNPs suspension. Using differentiated THP-1 cells, we monitored and quantified the uptake of 50 nm AgNPs in a time and dose-dependent manner by mass cytometry. 7 to 120 AgNPs per cell (2 to 89 fg Ag/cell) were determined after exposure of differentiated THP-1 cells to low AgNPs concentrations of 0.1 and 1.0 mg L-1, at time points of 4 and 24 h. The results were validated by mass cytometric analysis of digested cells working as a conventional inductively coupled plasma mass spectrometry, ICP-MS. This study demonstrates the power of single cell analysis by mass cytometry even for low doses experiments as a new analytical tool for hitherto unaddressed questions in nanotoxicology. T2 - 1st German Mass Cytometry User Forum CY - Berlin, Germany DA - 01.02.2018 KW - Silver nanoparticles KW - Single cell KW - Mass cytometry PY - 2018 AN - OPUS4-44408 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jakubowski, Norbert T1 - Quantification of silver nanoparticles at single cell level by mass cytometry N2 - Silver nanoparticles (AgNPs), have a high scientific and commercial impact due to their important antibacterial properties. However, there are serious concerns about their toxicological adverse effects as a consequence of their broad range of applications. Particularly, the impact of AgNPs on cells is not very well understood yet and there is a current demand to develop analytical methodologies providing information about the interaction and distribution of AgNPs at a single cell level. In this research, mass cytometry was used to introduce a new quantitative approach to study the uptake of AgNPs by individual THP-1 macrophages as a cell model system. Here, we show that this methodology provides not only multi-variate phenotypic information of individual cells but enables the quantitative analysis of AgNPs associated to cells in a single measurement by performing an external calibration using AgNPs suspension. Using differentiated THP-1 cells, we monitored and quantified the uptake of 50 nm AgNPs in a time and dose-dependent manner by mass cytometry. 7 to 120 AgNPs per cell (2 to 89 fg Ag/cell) were determined after exposure of differentiated THP-1 cells to low AgNPs concentrations of 0.1 and 1.0 mg L-1, at time points of 4 and 24 h. The results were validated by mass cytometric analysis of digested cells working as a conventional inductively coupled plasma mass spectrometry, ICP-MS. This study demonstrates the power of single cell analysis by mass cytometry even for low doses experiments as a new analytical tool for hitherto unaddressed questions in nanotoxicology. T2 - BAM-BfR Seminar CY - Berlin, Germany DA - 15.02.2018 KW - Silver nanoparticles KW - Single cell KW - Mass cytometry PY - 2018 AN - OPUS4-44410 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maiwald, Michael T1 - Already Producing or Still Calibrating? – Advances of Model-Based Data Evaluation Concepts for Quantitative Online NMR Spectroscopy N2 - The departure from the current automation landscape to next generation automation concepts for the process industry has already begun. Smart functions of sensors simplify their use and enable plug-and-play integration, even though they may appear to be more complex at first sight. Monitoring specific information (i.e., “chemical” such as physico-chemical properties, chemical reactions, etc.) is the key to “chemical” process control. Here we introduce our smart online NMR sensor module provided in an explosion proof housing as example. Due to NMR spectroscopy as an “absolute analytical comparison method”, independent of the matrix, it runs with extremely short set-up times in combination with “modular” spectral models. Such models can simply be built upon pure component NMR spectra within a few hours (i.e., assignment of the NMR signals to the components) instead of tedious calibrations runs. We present a range of approaches for the automated spectra analysis moving from statistical approach, (i.e., Partial Least Squares Regression) to physically motivated spectral models (i.e., Indirect Hard Modelling and Quantum Mechanical calculations). Based on concentration measurements of reagents and products by the NMR analyzer a continuous production and direct loop process control were successfully realized for several validation runs in a modular industrial pilot plant and compared to conventional analytical methods (HPLC, near infrared spectroscopy). The NMR analyser was developed for an intensified industrial process funded by the EU’s Horizon 2020 research and innovation programme (“Integrated CONtrol and SENsing”, www.consens-spire.eu). T2 - Practical Applications of NMR in Industry Conference (PANIC) 2018 CY - La Jolla, California, USA DA - 04.03.2018 KW - Process Monitoring KW - Process Control KW - Process analytical technology KW - Spectral Modeling KW - Smart Sensors KW - CONSENS KW - Industrie 4.0 PY - 2018 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-444357 AN - OPUS4-44435 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kern, Simon T1 - Novel Flow Cell Designs for Process Monitoring with Compact NMR Spectroscopy N2 - Compact nuclear magnetic resonance (NMR) instruments make NMR spectroscopy and relaxometry accessible in industrial and harsh environments for reaction characterization and process control. Robust field integration of NMR systems have to face explosion protection or integration into process control systems with short set-up times. This paves the way for industrial automation in real process environments. The design of failsafe, temperature and pressure resistant flow through cells along with their NMR-specific requirements is an essential cornerstone to enter industrial production plants and fulfill explosion safety requirements. Additionally, if fast reactions are monitored, suitable mixing devices need to be placed in close vicinity to the measuring volume to mix the reactants properly. NMR-specific requirements aim at full quantitative pre-magnetization and acquisition with maximum sensitivity while reducing sample transfer times and dwell-times. All parameters are individually dependent on the applied NMR instrument. Luckily, an increasing number of applications are reported together with an increasing variety of commercial equipment. However, these contributions have to be reviewed thoroughly. The performance of sample flow cells commonly used in online analytics and especially for low-field NMR spectroscopy was experimentally and theoretically investigated by 1H-NMR experiments and numerical simulations. Especially, the applicability of 3D printed zirconium dioxide for innovative flow cell designs was of interest. Here, we demonstrate and discuss an automated test method to determine the critical parameters of flow through cells for quantitative online NMR spectroscopy. The setup is based on randomized setpoints of flow rates in order to reduce temperature related effects. Five flow cells and tubing were assessed and compared for high-field as well as low-field NMR spectrometers. T2 - Practical Applications of NMR in Industry Conference ​(PANIC) 2018 CY - La Jolla, California, USA DA - 04.03.2018 KW - Process Monitoring KW - Process Control KW - Flow Cell KW - Online NMR Spectroscopy KW - Additive Manufacturing KW - CONSENS PY - 2018 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-444364 N1 - Geburtsname von Bornemann-Pfeiffer, Martin: Bornemann, M. - Birth name of Bornemann-Pfeiffer, Martin: Bornemann, M. AN - OPUS4-44436 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Guhl, Svetlana T1 - Process Monitoring with Online NMR Spectroscopy – An Enabler for Industrial Internet of Things (IIoT) N2 - Improvement in deep process understanding is a mandatory prerequisite for the application of modern concepts like Industrial Internet of Things (IIoT) or “Industrie 4.0”. This is particularly relevant in new process concepts such as intensified production in modularized plants. The direct hyphenation with online methods of process analytical technology (PAT) allows profound insights into the actual reactions within chemical and pharmaceutical production steps and provides necessary information for associated advanced control strategies. While the industrial application of online Raman spectroscopy has already been successfully demonstrated, low-field NMR spectroscopy is not yet adequately developed as an online method for use in process industry. The high information content combined with the low calibration effort makes NMR spectroscopy a highly promising method for modern process automation with a high flexibility due to short set-up times and novel calibration concepts. This is a major advantage especially within multi-purpose production plants, as well as for processes suffering from fluctuating quality of raw materials. The concept was evaluated on several example processes of pharmaceutical and chemical industry. The one presented here represents a stage of the synthesis of the industrially important solvent tetrahydrofuran consisting of the catalytic hydrogenation of 2-butine-1,4-diol was monitored. This reaction is proceeding via an intermediate product and suffers from competitive reaction paths. In this application, different spectroscopic methods were combined with the data obtained from classical process sensors, e.g., pressure, temperature, and flow transducers for the development of innovative control concepts. T2 - Practical Applications of NMR in Industry Conference ​(PANIC) 2018 CY - La Jolla, California, USA DA - 04.03.2018 KW - Online NMR Spectroscopy KW - Process Control KW - Industrie 4.0 KW - Indirect Hard Modeling KW - Industrial Internet of Things (IIoT) KW - CONSENS KW - Hydrogenation KW - Lithiation PY - 2018 AN - OPUS4-44437 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Thorid T1 - HARFE: Haftfestigkeit Reproduzierbarkeit Festigkeit „Nanoskalige Haftvermittler zur Erhöhung der Haft- bzw. Klebfestigkeit unter Verwendung von ALD-Hybridprozessen“ N2 - Das Poster „HARFE: Haftfestigkeit Reproduzierbarkeit Festigkeit“ widmet sich den nanoskaligen Haftvermittlern zur Erhöhung der Haft- bzw. Klebfestigkeit unter Verwendung von ALD-Hybridprozessen. T2 - Netzwerksymposium “Schützen und Veredeln von Oberflächen”, Wildau CY - TH Wildau, Germany DA - 01.03.2018 KW - Verbundfestigkeit KW - Oberflächenenergie KW - ALD-Beschichtung PY - 2018 AN - OPUS4-44399 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Braun, Ulrike T1 - Repräsentative Untersuchungsstrategien für ein integratives Systemverständnis von spezifischen Einträgen von Kunststoffen in die Umwelt (RUSEKU) N2 - Informationsposter zum Projekt RUSEKU T2 - Auftaktveranstaltung Verbundprojekte im Rahmen der Fördermaßnahme Plastik in der Umwelt CY - Berlin, Germany DA - 17.-18.10.2017 KW - Mikroplastik KW - Analytik KW - Probennnahme PY - 2017 AN - OPUS4-43805 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Saatz, Jessica T1 - Nanocrystals as tagging reagents for imaging mass cytometry N2 - Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is gaining importance for bioimaging cytometry to answer analytical, biological and biomedical questions. High sensitivity and spatial resolution make it an excellent tool for imaging of metal and heteroelement distribution in single cells. Comparable to CyTOF imaging mass cytometry, metal coded antibodies can be used for multiparametric analysis as well as quantification. In this project, nanocrystals are investigated as new highly sensitive metal tags for identification and quantification of biomarkers, like Alzheimer’s or breast cancer, in clinical cell assays and tissue samples. Of high significance is the simultaneous analysis of several biomarkers at once, which is possible by special coding of lanthanide tags on the biomarker associated antibody. Nanocrystals show potential for sensitive measurement in MS due to high stability and signal amplification compared to tags with fewer metal atoms. For proof of principle, synthesis and characterization of lanthanide doped nanocrystals was performed by a nanoPET pharma GmbH with great reproducibility and homogenous size. In A549 cell cultures, the uptake and distribution of these nanocrystals within the monolayered cells was investigated by LA-ICP-MS measurements using subcellular resolution. The nanocrystals showed high sensitivity and the possibility of multiparametric analysis by doting different lanthanides. Additionally, stability of the bioconjugation of the nanocrystals and target antibodies was investigated using Dot Blot experiments and LA-ICP-MS. T2 - CyTOF User Forum 2018 CY - Berlin, Germany DA - 01.02.2018 KW - Nanocrystal KW - Imaging mass cytometry KW - LA-ICP-MS KW - Bioconjugation KW - Metal-Tag KW - Multimodal PY - 2018 AN - OPUS4-44106 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Haferkamp, Sebastian T1 - In situ monitoring of mechanochemical Knoevenagel condensations N2 - Mechanaochemistry is an effective method to yield pure compounds within a short reaction time. Mechanochemical C-C bond forming reactions gained increasing interest in the past decade. Among those the Knoevenagel condensation is an important reaction for synthezing a,b-unsaturated compounds. The information on the underlying mechanisms of mechanochemical reactions are scarce. In situ investigations using Raman spectroscopy and synchroton XRD either alone or in combination address this challenge. We present the in situ results of a Knoevenagel condensation with p-nitrobenzaldehyde and malononitrile under neat grinding conditions. T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 10.11.2017 KW - Mechanochemistry KW - Knoevenagel condensation PY - 2017 AN - OPUS4-44140 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Haferkamp, Sebastian T1 - In situ investigation of a mechanochemical Knoevenagel condensation N2 - Mechanaochemistry is an effective method to yield pure compounds within a short reaction time. Mechanochemical C-C bond forming reactions gained increasing interest in the past decade. Among those the Knoevenagel condensation is an important reaction for synthezing a,b-unsaturated compounds. The information on the underlying mechanisms of mechanochemical reactions are scarce. In situ investigations using Raman spectroscopy and synchroton XRD either alone or in combination address this challenge. We present the in situ results of a Knoevenagel condensation with p-nitrobenzaldehyde and malononitrile under neat grinding conditions. T2 - PRORA CY - Berlin, Germany DA - 30.11.2017 KW - C-C coupling KW - Knoevenagel condensation KW - In situ PY - 2017 AN - OPUS4-44141 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Johann, Sergej A1 - Bartholmai, Matthias T1 - Characterization of the temperature behavior of a piezoresistive accelerometer N2 - Piezoresistive accelerometers use a strainsensing element, generally made of semiconductor material, e.g., silicon to convert the mechanical motion into an electrical signal. This element is usually designed in form of a cantilever beam loaded with a mass. Acceleration causes bending of the beam, which produces a change of electrical resistance proportional to the applied acceleration. Main advantages of piezoresistive accelerometers in comparison to other types, e.g., piezoelectric and capacitive, is their robust and highly dynamic behavior, which qualifies them for application in high impact shock applications. Mechanical damping is typically implemented with silicon oil in a way that the output signal is undistorted over a wide frequency range. These characteristics principally qualify them for the application in drop tests carried out at BAM, for which they are calibrated over the frequency range from 1 to 4 kHz. However, using silicon oil for damping, has the drawback of temperature dependent change of its viscosity, leading to temperature dependent deviation of the accelerometer’s sensitivity. This study presents experimental results of the temperature behavior of a piezoresistive accelerometer with a dynamic range up to ±5000 g. This type of accelerometer is applied for drop tests which are partially performed at temperatures of -40 or +100 °C. T2 - 34th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Trieste, Italy DA - 19.09.2017 KW - Piezoresistive accelerometers KW - Temperature behavior of a piezoresistive accelerometer KW - Hopkinson bar KW - Drop tests PY - 2017 AN - OPUS4-42095 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Niels T1 - Concept for an aerial-based landfill monitoring system N2 - Aerial based robots constitute a safe and suitable approach to remote gas-sensing. This paper describes a new concept , incorporating existing UAVs and newly developed gas sensors. The presented autonomous system is able to perform gas source localization and gas distribution mapping. T2 - 34th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Trieste, Italy DA - 19.09.2017 KW - Gassensing KW - Multicopter KW - UAV KW - Olfaction PY - 2017 AN - OPUS4-42128 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raedel, Martina T1 - Research and reconstruction of historic gold mosaics N2 - A research project of reconstructing historical gold mosaics deals with reconstructing weatherproof gold and silver mosaics according to historical models. The gold mosaics examinded originate mainly from germany from 1880 to 1920 and are composed of three parts. They consist of a matching support glass, the gold or silver layer and a cover glass. By examining the morphology and layer thicknesses with the ESEM, and using chemical analysis with the EDX, the relationship of glass composition and damage patterns was established. The glass analysis provided quantitative composition data and made it possible to determine its chemical stability. It supplied the basis for calculating glass characteristics and was referred to when casting suitable historical mosaic glass. The analysis of the qualitative composition of the gold and silver layers also served as a model for reconstruction. After testing selected reconstructed gold mosaics in the climate chamber, the ESEM was used for capturing leaching and other process data and the glass composition was optimized accordingly. Over 100 predominantly historical gold mosaics were analyzed and the results entered into a database which can now be consulted for comparative investigations to determine both origin and date. T2 - What comes to mind when you hear mosaics, conserving mosaics from ancient to modern CY - Barcelona, Spain DA - 15.10.2017 KW - Gold mosaics KW - Leaching process KW - Composition KW - Database PY - 2017 AN - OPUS4-43216 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gürlich, L. A1 - Kruschwitz, Sabine A1 - Halisch, M. A1 - Weller, Andreas T1 - SIP Messungen an Fontainebleau Sandsteinen N2 - Die Methode der Spektral Induzierten Polarisation (SIP) wird eingesetzt, um hydraulische Parameter wie Porosität und Permeabilität von Gesteinen abzuleiten. Dabei wird ein Wechselstrom im Bereich von 1 mHz bis 45 kHz in das Gestein eingespeist und die Phasenverschiebung zwischen elektrischem Strom und Spannung gemessen, woraus die komplexe Leitfähigkeit berechnet wird. In dieser Arbeit werden die komplexen Leitfähigkeiten von Fontainebleau Sandsteinen mittels einer am Leibnitz-Institut für Angewandte Geophysik (LIAG) hergestellten Messzelle und einer SIP Apparatur des Forschungszentrums Jülich (FZJ) gemessen. Die Fontainebleau Sandsteine stammen aus Frankreich, südlich von Paris und zeichnen sich durch eine nahezu homogene Zusammensetzung aus Quartz aus. Für die Messungen wurden vier Blöcke mit jeweils vier Proben ausgewählt, die in Porosität und Permeabilität variieren. Für die SIP-Messungen werden die Gesteinsproben mit Natriumchlorid Lösung unterschiedlicher Leitfähigkeiten gesättigt, um die Abhängigkeit der IP-Spektren von der Leitfähigkeit des Porenfluids zu untersuchen. Die Messungen werden mit anderen petrophysikalischen Untersuchungen ergänzt, wie z.B. der Bestimmung der Porenradienverteilung mittels Quecksilberporosimetrie und der spezifischen inneren Oberfläche mit Gassorption (BET). Mit dem Raster-Ektronen-Mikroskop werden hochauflösende Bilder der inneren Gesteinsstruktur erzeugt und ausgewertet. Erste Ergebnisse der SIP-Messungen zeigen deutliche Phasenmaxima im niederfrequenten Bereich, die hinsichtlich ihrer Amplitude und Frequenzlage zwischen den Blöcken variieren. Ziel der Arbeit ist eine systematische Untersuchung der Polarisationseigenschaften bezüglich der Variabilität von Porosität, Porenradienverteilung, spezifischen inneren Oberfläche und Fluidleitfähigkeit, um die Zusammenhänge qualitativ und quantitativ zu charakterisieren. T2 - 77. Jahrestagung der Deutschen Geophysikalischen Gesellschaft CY - Potsdam, Germany DA - 27.03.2017 KW - Spektral Induzierte Polarisation KW - Fontainebleau Sandstein PY - 2017 AN - OPUS4-43243 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tvrdoňová, M. A1 - Ascher, Lena T1 - A new strategy of reagents labeling (NPs) used in immunoassay with LA-ICP-MS N2 - Laser ablation with inductively coupled plasma is still more used in life science as biology and biomedicine and the utilization of metals and proteins determination simultaneously is also growing up. We have developed a new strategy of labeling of antibody (it can specific binds to proteins) by nanoparticles and quantum dots which is composed of thousands of atoms and thus increases the sensitivity enormously and of course decreases the Limit of detection, compare to lanthanoids labeling. The ability of successfully tagged antibodies bound to Antigen (protein) was proved by dot blot on membrane imaged by LA-ICP-MS. T2 - Euroanalysis 2017 CY - Stockholm, Sweden DA - 28.08.2017 KW - Immunoassay KW - LA-ICP-MS KW - Labeling KW - Nanoparticle PY - 2017 AN - OPUS4-43168 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hiller, Th. A1 - Costabel, S. A1 - Müller-Petke, M. A1 - Kruschwitz, Sabine T1 - Evaluation of different laboratory NMR devices in a tripartite round robin test N2 - Nuclear magnetic resonance (NMR) is a well established laboratory / borehole method to characterize the storage and transport properties of rocks due to its direct sensitivity to the corresponding pore fluid saturation (water or oil) and pore sizes. For petrophysical applications there are several different NMR laboratory devices commercially available varying over a wide range of e.g. magnetic field strength / frequency (2 MHz to 30 MHz), applicable measurement protocols (T1, T2, T1-T2, T2-D, etc.) and sample sizes (2.5 cm to 10 cm in diameter). In this work we present NMR measurements, layed out in a round robin like manner, on a set of 20 sandstone samples. We use three different NMR devices containing two standard setups with homogenous magnetic fields (LIAG and RWTH) and one single-sided setup with gradient field (BGR) to measure T1 and T2 relaxation data. In our evaluation we especially focus on the comparison of the individually inverted relaxation time distributions to quantify the differences arising from different laboratory setups. Diverging results can be deduced on the one hand to the inherit differences between homogeneous and gradient fields but on the other hand also due to quality differences between the two homogeneous setups. Additionally, we also examine the influence of the individually chosen inversion parameters (signal processing, distribution sampling points, error weighting, regularization, etc.) to establish a general standardized best practice recommendation for future petrophysical NMR laboratory measurements. T2 - 77. Jahrestagung der Deutschen Geophysikalischen Gesellschaft CY - Potsdam, Germany DA - 27.03.2017 KW - Nuclear Magnetic Resonance KW - Sandstone PY - 2017 AN - OPUS4-43244 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Tobias T1 - Chemical investigation of concrete infrastructure using a mobile LIBS system N2 - In order to determine the remaining life-time of reinforced concrete infrastructure like marine constructions, bridges or parking decks a fast and reliable detection of harmful species is necessary. If, as an example chlorine exceeds a specific concentration threshold, the result can be pitting corrosion of the reinforcement, which affects the stability and lifetime of building structure. In cooperation with industrial partners and BAM a mobile LIBS system for the on-site measurements has been developed. The mobile system uses a low energy laser with a pulse energy of 3 mJ and a NIR-spectrometer in combination with a scanner for two-dimensional mapping (140 x 170mm). This work presents the mobile LIBS system, the calibration and an on-site applications in a parking garage. A correlation between surface measurements on a parking deck and ingress profiles obtained due to concrete cores are presented. LIBS results using the mobile LIBS system are able to provide in-time information about the Cl concentration and can therefore be used for quality assurance during reinstatement work. T2 - EMSLIBS 2017 CY - Pisa, Italy DA - 11.06.2017 KW - LIBS KW - Concrete KW - Chlorine PY - 2017 AN - OPUS4-43173 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Büchele, Dominique T1 - Entwicklung einer online-RFA Analyse zur Bestimmung von Bodennährstoffen N2 - Mit wachsenden Bevölkerungszahlen steigt auch der Rohstoffkonsum, und der nachhaltigere und effizientere Umgang mit knappen Ressourcen wie Wasser und Boden rückt in den Fokus. Im Rahmen der vom Bundesministerium für Bildung und Forschung (BMBF) geförderten Forschungsinitiative BonaRes werden Strategien entwickelt, um Boden als nachhaltige Ressource in der Bioökonomie zu nutzen. Das interdisziplinäre Teilprojekt I4S – Intelligence for soil – ist dabei für die Entwicklung eines integrierten Systems zum ortsspezifischen Management der Bodenfruchtbarkeit zuständig. Hierfür wird eine Plattform gebaut, auf der verschiedene Sensoren installiert werden sollen, deren in Echtzeit erhaltene Messdaten in Modelle und Entscheidungsalgorithmen zur Steuerung der Düngung und dementsprechend Verbesserung der Bodenfunktionen einfließen sollen. So wären Untersuchungen in engmaschigen, dynamischen Rastern und schnelle Analysen großer Flächen möglich, um höhere Erträge zu erwirtschaften. Einer dieser Sensoren, auf dessen Grundlage ein robustes Online-Verfahren zur Bestimmung der Makro- und Mikronährstoffe, wie Ca, K und Mn in Böden entwickelt werden soll, ist die Röntgenfluoreszenzanalyse (RFA). Die RFA eignet sich vor allem durch ihre schnelle, kontaktlose, simultane Multielementanalyse und wird bereits zur Bestimmung von Schwermetallen in Böden eingesetzt. Ein weiterer Vorteil der RFA ist die geringe Probenvorbereitung. Um Messungen auf einem Feld zu simulieren, wurde in einen Laboraufbau ein Probenteller installiert, der sich bei verschiedenen Winkelgeschwindigkeiten bewegen lässt und so dynamisches Messen der als Spur aufgetragenen Probe ermöglicht. Gerade bei einer komplexen Matrix wie Boden, die eine breite Elementverteilung aufweist, ist die Datenauswertung ein wichtiger Faktor. Die bisher verwendete univariate Datenanalyse liefert gute Ergebnisse und zeigt, dass durch Kalibrierung der RFA mit 14 Referenzmaterialien große Ackerflächen ausgewertet werden können. Dies funktioniert aber nur, solange die Elementgehalte der Proben mit denen der Referenzmaterialien vergleichbar sind. Die zusätzlich verwendete multivariate Datenanalyse bietet hingegen die Möglichkeit, Modellrechnungen der Böden durchzuführen und Böden mithilfe der Hauptkomponentenanalyse (PCA) besser zu klassifizieren. Des Weiteren können basierend auf der Partial Least Squares Regression (PLSR) Kalibriermodelle erstellt werden, welche Prognosen zu den Elementgehalten unbekannter Ackerböden ermöglichen. Zusätzlich bietet die multivariate Datenanalyse die Möglichkeit, Störgrößen wie unterschiedliche Korngrößenverteilung und Feuchtigkeitsgrad der Probe in das Modell miteinzubeziehen. Beide Auswertemethoden sollen anhand statisch gemessener Proben verglichen werden und durch Messung einer Vielzahl realer Bodenproben von unterschiedlichen Standorten erweitert werden. Im weiteren Verlauf müssen beide Modelle auf dynamisch bewegte Proben übertragen werden. T2 - 13. Herbstkolloquium AK Prozessanalytik CY - Esslingen-Berkheim, Germany DA - 20.11.2017 KW - PCA KW - Nährstoffe KW - Boden KW - RFA KW - PLSR PY - 2017 AN - OPUS4-43150 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rühlmann, Madlen T1 - Bestimmung von Nährstoffen in Böden mittels LIBS – Univariate vs. multivariate Datenanalyse N2 - LIBS (laserinduzierte Plasmaspektroskopie) ist bekannt für eine schnelle, simultane Multielementanalyse, welche kaum bis keine Probenvorbereitung benötigt. Im Hinblick dessen ist das Interesse an LIBS als Online-Analysentechnik für den Einsatz auf Agrarflächen in den letzten Jahren stark gestiegen. Im Rahmen des Projekts I4S (engl. für: intelligence for soil) soll mithilfe von LIBS der Elementgehalt von Makro- und Mikronährstoffen in Böden in Echtzeit bestimmt werden. I4S gehört zu den zehn interdisziplinären Forschungsprojekten des Innovationsprogramms BonaRes und arbeitet an der Entwicklung einer Sensorplattform für ein ortsspezifisches Management der Bodenfruchtbarkeit. BonaRes ist vom Bundesministerium für Bildung und Forschung (BMBF) gefördert und beschäftigt sich mit Boden als nachhaltige Ressource für die Bioökonomie. Für die Anwendung von LIBS an Böden wurde ein spezieller Aufbau konstruiert. Die Probenzufuhr erfolgt über einen drehbaren Probenteller, auf den der lose Boden in Form einer Spur aufgetragen oder als gepresste Tablette platziert werden kann. Der Probenteller kann in unterschiedlichen Geschwindigkeitsstufen betrieben werden, um die Anwendung auf dem Feld zu simulieren. Für eine höhere Signalintensität und eine bessere Reproduzierbarkeit wird eine Doppel-Puls (DP) Nd:YAG Lasereinheit verwendet. Weiterhin besitzt der LIBS-Messkopf eine integrierte Absaugvorrichtung, um bei dem Ablationsprozess entstehende Stäube zu minimieren und eine störungsfreie Detektion des Signals zu gewährleisten. Da es sich bei LIBS um eine Relativmethode handelt, muss das System für eine absolute Quantifizierung hinsichtlich der Zielanalyten kalibriert werden. Hierfür werden realitätsnahe Proben benötigt. Es wurden 16 freiverkäufliche, zertifizierte Referenzmaterialien gemessen und für die Kalibrierung verwendet. Aufgrund der komplexen Bodenmatrix und Einflüsse, wie Korngrößeneffekte und Feuchtigkeit, stellt die absolute Quantifizierung mittels LIBS eine Herausforderung dar. Für die Kalibrierung wurde sowohl ein univariater als auch ein multivariater Analyseansatz (Partial least square regression) verwendet. Mittels der multivariaten Auswertung konnte ein robusteres Kalibriermodell aufgrund einer besseren Korrelation zwischen Signalintensität und Elementkonzentration erstellt werden. Innerhalb des I4S-Verbundes gibt es eine Vielzahl von Bodenproben von unterschiedlichen Testackerflächen mit bereits bekannten Informationen über die chemische Zusammensetzung, Textur und Korngrößenverteilung. Diese Bodenproben sollen im nächsten Schritt für weitere Berechnungen und zu Validierungszwecken verwendet werden. T2 - 13. Herbstkolloqium AK Prozessanalytik CY - Esslingen, Germany DA - 20.11.2017 KW - Analyse KW - Nährstoffe KW - Boden KW - LIBS KW - Multivariat PY - 2017 AN - OPUS4-43151 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rühlmann, Madlen T1 - Determination of plant essential nutrients in soils using DP-LIBS N2 - LIBS (laser-induced breakdown spectroscopy) is known as a fast and simultaneous multi-element analysis with little or no sample preparation. In the last few years there has been a growing interest in applications of LIBS in the field of agriculture. As part of the National Research Strategy BioEconomy 2030 the German Federal Ministry of Education and Research (BMBF) started an innovation programme called BonaRes. BonaRes consists of ten interdisciplinary research project associations which are dealing with soil as a sustainable resource for the bio-economy. One of these research projects is I4S (intelligence for soil) which has the goal to develop an integrated system for site-specific soil fertility management. This system includes a sensor platform, which contains different sensors, like XRF, VIS-NIR, Gamma and LIBS. The main task of LIBS measurements in this project is the real time determination of the elemental contents of nutrients in soils, like calcium, magnesium, potassium. For this purpose, a special setup has been designed. The sample uptake operates with the help of a rotatable sample plate which circulates with different velocities to simulate the application on the field. To provide a higher intensity and a better reproducibility of the obtained signal, a double-pulse Nd:YAG laser was used. In order to minimize dust formation from the soil during the operation of the laser, a dust removal by suction has been integrated. When using relative methods such as LIBS, a suitable calibration curve is needed for absolute quantification. With the help of 16 certified reference soils, calibration curves for different elements were initially calculated and used for the quantification of seven soil samples from different testing grounds in Germany. The complex matrix of soils, as well as the influence of moisture and grain size in soils makes the absolute quantification by LIBS challenging. To overcome these influences, a calibration curve based on multivariate analysis (partial least square regression) was generated. T2 - Adlershof Forschungsforum CY - Berlin, Germany DA - 10.11.2017 KW - Fertility management KW - Multivariate KW - Soil KW - LIBS PY - 2017 AN - OPUS4-43154 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Büchele, Dominique T1 - Entwicklung einer Online-RFA Methode zur Bestimmung der Makro- und Mikronährstoffe im Boden N2 - Die vom Bundesministerium für Bildung und Forschung (BMBF) geförderte Forschungsinitiative BonaRes hat sich zum Ziel gesetzt Strategien zu erarbeiten um Boden als nachhaltige Ressource für die Bodenökonomie zu nutzen. Sie ist in 10 interdisziplinären Forschungskonsortien eingeteilt, wobei das Teilprojekt „Intelligence for soil“ (I4S) für die Entwicklung eines integrierten Systems zum ortsspezifischen Management der Bodenfruchtbarkeit zuständig ist. Das System soll sowohl verschiedene Bodensensoren sowie Modelle und Entscheidungsalgorithmen zur Steuerung der Düngung und dementsprechend Verbesserung der Bodenfunktionen vereinen. So kann die Umweltbelastung durch die im Dünger enthaltenen Nitrate reduziert werden und die durch Überdüngung entstehenden Kosten für die Landwirte minimiert werden. Hierzu ist eine flächendeckende Kartierung der Ackerflächen hinsichtlich der für Pflanzen wichtigen Makro- und Mikronährstoffe, wie Calcium nötig. Ziel der Bundesanstalt für Materialforschung und -prüfung (BAM) innerhalb von I4S ist die Optimierung eines auf der Röntgenfluoreszenzanalyse (RFA) basierenden Sensors für die mobile online-Applikation auf dem Feld. Diese zerstörungsfreie und kontaktlose Methode eignet sich besonders für den Feldeinsatz dank minimaler Probenvorbereitung und vor allem schneller, simultaner Multielementanalyse. Hauptkomponente der robusten und transportablen Messstation ist neben dem Sensor ein drehbarer Probenteller um das Messen während der Fahrt bei verschiedenen Geschwindigkeiten auf einem Feld unter Laborbedingungen zu simulieren. Der energiedispersive RFA-Sensor besitzt ein mit Helium gespültes Messvolumen womit auch die für diese Aufgabenstellung interessanten, leichten Elemente detektiert werden können. Schwierigkeiten beim Einsatz der RFA liegen in der Kalibrierung des Geräts um richtige und präzise Ergebnisse zu erhalten. Der Fokus zu Beginn richtet sich somit auf die Entwicklung eines Kalibriermodells, welches die verschiedenen Hauptbodenarten berücksichtigt. Gerade die zu untersuchenden Makro- und Mikronährstoffe wie Schwefel liegen im Vergleich zu SiO2 in sehr geringen Konzentrationen im Boden vor. Die Optimierung der Parameter wie Leistung oder auch Messzeit können an dieser Stelle die erhaltenen Signalintensitäten deutlich beeinflussen. Zusätzlich sind gerade bei einer komplexen Matrix wie Boden genaue Untersuchungen verschiedener Störgrößen wichtig. Hierzu zählen unter anderem der Feuchtigkeitsgrad der Probe, aber auch Korngrößeneffekte haben einen entscheidenden Einfluss. Beide Parameter müssen hinsichtlich ihrer Auswirkungen auf die Messergebnisse der mobilen-RFA sowohl bei stationären, als auch bei bewegten Bodenproben betrachtet werden. T2 - Anakon CY - Tübingen, Germany DA - 03.04.2017 KW - Nährstoffe KW - RFA KW - Boden PY - 2017 AN - OPUS4-43156 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rühlmann, Madlen T1 - Entwicklung eines Online-LIBS-Systems für die Bestimmung von Nährstoffgehalten in Böden N2 - Die Gehalte von für das Pflanzenwachstum relevanten Nährstoffen divergieren innerhalb einer landwirtschaftlichen Nutzfläche sehr stark. Für eine ertragssteigernde Bewirtschaftung ist daher eine gezielte Düngung unabdingbar. Die Nachfrage nach einer kostengünstigen, flächendeckenden Kartierung von Ackerflächen in Bezug auf die im Boden enthaltenen Nährstoffe steigt demnach. Hierzu werden schnelle, mobil einsetzbare und verlässliche Messmethoden benötigt. Eine geeignete Methode stellt die laserinduzierte Plasmaspektroskopie (kurz: LIBS aus dem Englischen für laser-induced breakdown spectroscopy) dar. Die LIBS ermöglicht eine schnelle und simultane Multielementanalyse und ist dabei nahezu zerstörungsfrei. Des Weiteren bedarf es für die Analyse kaum bis keine Probenvorbereitung was den Einsatz auf dem Feld begünstigt. Die Methode beruht auf der Ionisierung des Probenmaterials (Plasmabildung) durch den Beschuss dieser mit kurzen Laserpulsen. Während der Expansion des Plasmas wird Strahlung emittiert, welche charakteristisch für die in der Probe enthaltenen Elemente ist. Das hier verwendete LIBS-System verfügt über einen Doppelpuls-Laser, bei dem zwei Laserpulse im kurzen Abstand hintereinander ausgesendet werden. Der erste Laserpuls ist für die “Vorbehandlung“ der Probe und der zweite Laserpuls für die Erwärmung des Plasmas. Dadurch können die Nachweisgrenzen im Vergleich zu einem einfach gepulsten Laser deutlich verbessert werden. Die Probenzufuhr findet durch einen drehbaren Probenteller statt auf dem der lose Boden in Form einer Spur aufgetragen wird. Der Probenteller kann in verschiedenen Geschwindigkeiten betrieben werden, um die Anwendung auf dem Feld zu simulieren. Da es sich bei der LIBS um eine Relativmethode handelt, ist eine Kalibrierung mit exakten Referenzwerten von verschiedenen Bodenproben notwendig. Böden weisen eine sehr komplexe Matrix auf, was die verlässliche Analyse mittels LIBS erschwert. Daher ist zunächst das Ziel die verschiedenen Messparameter des LIBS-Systems für unterschiedliche Böden zu optimieren und mögliche Störeffekte, wie Korngrößen und Feuchtigkeitsgrad, durch eine geeignete Probenkonditionierung zu eliminieren. T2 - Anakon 2017 CY - Tübingen, Germany DA - 03.04.2017 KW - Multivariat KW - Boden KW - LIBS KW - Nährstoffe KW - Analyse PY - 2017 AN - OPUS4-43157 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bremser, Wolfram A1 - Paul, Andrea T1 - Approaches to measurement uncertainty estimates for nominal properties N2 - Qualitative reference materials (RM) cover a wide range of the overall RM market. Proficiency testing providers attract up to a thousand of participants in PT schemes purely oriented on qualitative results. The RM used for these kinds of PT are poorly regulated, nevertheless with a more and more general acceptance of accreditation in the field of RM production and PT provision, there is an ever increasing interest in assessing producers and providers according to rules already well accepted in the field of quantitative analysis. The basic governing document, ISO 17034:2016, is written in a form that, at least for the overwhelming majority of requirements, may be applied to both qualitative and quantitative RM. However, problems remain. In particular, the expression of uncertainty of a purely qualitative result is still unresolved, and under discussion, the latter now lasting already dozens of years. Some handles would be needed. In the poster, existing approaches and some pragmatic, new ways to tackle the problem are displayed and discussed. T2 - Advanced Mathematical and Computational Tools for Metrology; AMCTM (XI) CY - Glasgow, Scotland, UK DA - 29 August 2017 KW - Nominal properties KW - Qualitative RM PY - 2017 AN - OPUS4-42467 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hüllmann, Dino T1 - Wind Vector Estimation on Multirotor Aircraft N2 - An equation for wind vector estimation using a multirotor aircraft as a flying anemometer is shown. To compute the wind vector an estimate of the thrust of the aircraft is required, which is related to the rotational speed of the rotors. Hence, a sensing system for the rotational speed using phototransistors is presented. T2 - 34th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Trieste, Italy DA - 19.09.2017 KW - Wind KW - Thrust KW - Phototransistor KW - Anemometer PY - 2017 AN - OPUS4-42428 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Anja T1 - Determining the shell thickness of PTFE@PS core@shell nanoparticles using scanning transmission x-ray microscopy (STXM) N2 - A scanning transmission x-ray microscopy (STXM) based methodology is introduced for determining the dimensions (shell thickness, core and total diameter) of core-shell nanoparticles which exhibit a strong x-ray absorption contrast and a well-defined interface between core and shell material. A low radiation dosage during data acquisition and, therefore, less x-ray beam induced damage of the sample is achieved by recording STXM images only at two predetermined energies of maximum absorption contrast, instead of recording a stack of images across the whole absorption edge. A model core-shell nanoparticle, polytetrafluoroethylene (PTFE) cores with polystyrene (PS) shell, is used for demonstration. Near edge x-ray absorption fine structure (NEXAFS) spectroscopy confirms the significant difference in x-ray absorption behavior between PTFE and PS. Additionally, due to the insolubility of styrene in PTFE a well-defined interface between particle core and shell is expected. In order to validate the STXM results, both the naked PTFE cores as well as the complete core-shell nanoparticles are examined by scanning electron microscopy (SEM). The introduced STXM based methodology yields particle dimensions in good agreement with the SEM results (deviation equal or less than 10%) and provides additional information such as the position of the particle core which cannot be extracted from a SEM micrograph. T2 - BAM PhD Day 2017 CY - Berlin, Germany DA - 21.09.2017 KW - STXM KW - SEM KW - PTFE KW - PS KW - Core-shell nanoparticles KW - Polymers KW - Metrology PY - 2017 N1 - Geburtsname von Müller, Anja: Hermanns, A. - Birth name of Müller, Anja: Hermanns, A. AN - OPUS4-42430 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lüth, Peter T1 - CEQAT-DGHS Ringversuchsprogramm für die Chemikaliensicherheit – Methodenvalidierung N2 - Bei der Bewertung der Verlässlichkeit der im Labor gewonnenen Prüfergebnisse spielen Ringversuche eine entscheidende Rolle. Die Bundesanstalt für Materialforschung und –prüfung (BAM) unterstützt deshalb den weiteren Ausbau des Ringversuchsprogramms des im Jahr 2007 gegründeten Kompetenzzentrums zur Qualitätssicherung für Prüfungen von Gefahrgütern und Gefahrstoffen auf physikalische Gefahren (Centre for quality assurance for testing of dangerous goods and hazardous substances, CEQAT-DGHS). Bei allen bisher untersuchten Prüfmethoden besteht ein Verbesserungsbedarf. Die RV müssen daher zunächst auf die Methodenentwicklung, -verbesserung und -validierung und auf die Bestimmung der Messunsicherheit der jeweiligen Prüfmethode abzielen und nicht auf Leistungstests. T2 - 13. Fachtagung Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen, Germany DA - 16.11.2017 KW - Gefahrgut KW - Gefahrstoff KW - Ringversuch KW - Prüfmethode KW - Validierung KW - Qualitätssicherung PY - 2017 AN - OPUS4-43301 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Iznaguen, Hassan T1 - Behaviour and resistance of selected model plastics to accelerated weathering under different environmental conditions N2 - MaUS is an acronym for ”Material und Umweltsimulationen“. Plastics are in the focus of environmental politics due to their long term behaviour and therefore to their persistence. Not only that they appear as visible contaminants in the sea and on the beach, but their unknown behaviour concerning their additives as well as the related transformation products are anxious. Therefore, a certified reference procedure must be established to provide a method for testing plastics. The aim of this project is the development of fast motion standard reference methods for testing plastics regarding to their environmental compatibility. To establish these testing methods polystyrene (PS) and polypropylene (PP) with environmental relevant brominated flame retardants were used, known for their persistent bioaccumulative and toxic (PBT) properties. In case of PS the material contains 1 wt.% of 1,2,5,6,9,10-hexabromo-cyclododecan (HBCD) and in case of PP 0.1 wt.% of a defined bromodiphenylether (BDE-209) were chosen. These additives are known as substances of very high concern (SVHC). Furthermore, polycarbonate (PC), which is still used as material in baby flasks and releases Bisphenol A (BPA), an estrogenic active substance is used as a model material. Finally PTFE is used regarding to its importance as a source for two ubiquitous environmental substances PFOS and PFOA, whose toxicological effects are still incompletely known. The focus in this current work is set on the transfer of potential pollutants out of the applied materials mentioned above into environmental compartments like water or soil. Here an accelerated aging concept should be developed to shortened time consuming natural processes. For these resulting simulations a programmable weathering chamber with dry and wet periods and with high and low temperatures is used. These programmes run for several weeks and according to a defined sampling schedule water samples were taken. After a distinct clean-up procedure the samples were analysed by HPLC-UV, LC-MS/MS or GC-MS. Of most interest in case of flame retardants are photocatalytic transformation products. Therefore, a non-target-screening resp. a suspected target-screening by LC-MS/MS and HRMS must be applied. T2 - 8th European Weathering Symposium EWS CY - Wien, Austria DA - 20.09.2017 KW - Passive sampling KW - Environmental simulation KW - BFR PY - 2017 AN - OPUS4-43314 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maierhofer, Christiane A1 - Ziegler, Mathias T1 - Neue Normen und Richtlinien für die Thermografie in der zerstörungsfreien Prüfung N2 - Da die Thermografie als zerstörungsfreies Prüfverfahren noch vergleichsweise neu in der Anwendung ist, beziehen sich die aktuell veröffentlichten und überarbeiteten Normen und Richtlinien im Wesentlichen auf die grundlegenden Prinzipien des Verfahrens und die verschiedenen Anregungs- und Auswertungstechniken, auf die Begriffe und auf die Gerätetechnik. Die grundlegenden Normen zum Prinzip des Prüfverfahrens, zu den Geräten und zu den Begriffen wurden in 2016 grundlegend überarbeitet und als CEN-Normen neu veröffentlicht. Im Anschluss dazu wird in 2017 der überarbeitete Normentwurf zur aktiven Thermografie veröffentlicht. Mit der Bearbeitung einer europäischen Norm zur Laserthermografie wurde begonnen. Auf nationaler Ebene werden zur Zeit Normen zu den verschiedenen Anregungstechniken erarbeitet. Anfang 2017 wurde der Normentwurf zur Impuls-Thermografie mit optischer Anregung veröffentlicht. Geplant sind weiterhin Entwurfsveröffentlichungen zur induktiv angeregten Thermografie sowie zur Lock-in-Thermografie mit optischer Anregung. Parallel dazu wurde die Überarbeitung der Norm zur Thermografischen Prüfung elektrischer Anlagen publiziert. Mit der Richtlinie VDI/VDE 3511 Blatt 4 bis 4.4 gibt es ein anerkanntes Regelwerk für die rückführbare Temperaturmessung und Kalibrierung von Strahlungsthermometern, die bisher für Thermografiekameras fehlte. In 2016 wurde daher die VDI/VDE Richtlinie 5585 Blatt 1 zur messtechnischen Charakterisierung von Thermografiekameras als Entwurf veröffentlicht. In Bearbeitung ist momentan Blatt 2 zur Kalibrierung von Thermografiekameras mit dem Ziel, auch für Thermografiekameras anerkannte Regeln zur rückführbaren Temperaturmessung zu erstellen. Im Beitrag werden die Anwendungsbereiche dieser Normen und Richtlinien vorgestellt und neue zukünftige Anwendungsbereiche in der Fertigung und Instandhaltung diskutiert. T2 - Thermografie-Kolloquium 2017 CY - Berlin, Germany DA - 28.9.2017 KW - Zerstörungsfreie Prüfung KW - Aktive Thermografie KW - Normung PY - 2017 AN - OPUS4-42396 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krankenhagen, Rainer A1 - Maierhofer, Christiane T1 - Quantitative Fehlstellencharakterisierung mit Puls- und Lock-in-Thermografie N2 - Seit dem Beginn der Anwendung der aktiven Thermografie für die zerstörungsfreie Prüfung werden für die optische Anregung zwei alternative Anregungstechniken eingesetzt: die Puls- oder Blitzthermografie und die Lock-in-Thermografie. Bei der Puls-Thermografie ist der Anregungspuls wesentlich kürzer als die Zeit, die für die Wärmediffusion in das Bauteil hinein benötigt wird. Die Auswertung der erfassten Abkühlsequenzen wird zurzeit im Wesentlichen mit zwei Verfahren durchgeführt. Für die Auswertung im Zeitbereich werden verschiedene Auswertungsmodi des TSR-Verfahrens (TSR: thermal signal reconstruction) und Verfahren zur möglichst frühzeitigen Detektion des Intensitäts- oder Temperaturkontrastes der Fehlstellen herangezogen. Alternativ kann die Auswertung im Frequenzbereich nach dem Verfahren der Puls-Phasen-Thermografie (PPT) erfolgen. Dabei wird die Abkühlsequenz als Überlagerung vieler Einzelschwingungen betrachtet (Fouriersynthese). Die entsprechenden Phasenkontraste können unter bestimmten Umständen zur Abschätzung der Fehlstellentiefe genutzt werden. Bei der Lock-in Anregung wird das zu untersuchende Prüfobjekt periodisch mit einer bestimmten Frequenz erwärmt und die Wärmestrahlung von der Oberfläche zeitgleich mit der Infrarotkamera erfasst. Für jede Anregungsfrequenz ist daher eine Einzelmessung erforderlich. Die Auswertung bezieht sich in den meisten Fällen allein auf die Berechnung des Phasen- und Amplitudenbildes bei der Anregungsfrequenz. Diese Berechnung kann bereits während der Messung (on-line) oder erst nach der Erfassung der Thermogrammsequenz (off-line) erfolgen. Gemäß dem Superpositionsprinzip, das wegen des linearen Charakters der Wärmeleitungsgleichung für alle Lösungen der Differentialgleichung gilt, besteht Äquivalenz zwischen einer monofrequenten Anregung bei Lock-in-Thermografie und einer entsprechenden Komponente gleicher Frequenz bei der Puls-Thermografie. Daher sollten die Puls-Thermografie und die Lock-in-Thermografie in den Phasenbildern für die gleichen Fehlstellen die gleichen Phasenkontraste ergeben. Die experimentelle Bestätigung dieser Äquivalenz für unterschiedliche Fehlstellenarten ist der Schwerpunkt dieses Beitrages. Mögliche Gründe für Abweichungen werden benannt und sind Grundlage für weitere Diskussionen. T2 - Thermografie-Kolloquium 2017 CY - Berlin, Germany DA - 28.09.2017 KW - Zerstörungsfreie Prüfung KW - Aktive Thermografie KW - Impuls-Thermografie KW - Lock-in-Thermografie PY - 2017 AN - OPUS4-42397 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kirner, Sabrina V. T1 - Laser-induced periodic surface structures on steel for tribological applications N2 - Laser-induced periodic surface structures (LIPSS) can be generated by irradiation of almost any material with linearly polarized laser beams, particularly when using ultrashort laser pulses. Within this work, different types of steel were irradiated at optimized conditions for the processing of large surface areas. For these nanostructured surfaces, the coefficient of friction (COF) using different lubricants was determined and the corresponding wear tracks were characterized by scanning electron microscopy (SEM). Our experiments provide a qualification of the tribologicalperformance of the fs-LIPSS on different steel surfaces, which are relevant for technical applications. T2 - International Conference on Laser Ablation (COLA) CY - Marseille, France DA - 3.09.2017 KW - Femtosecond laser ablation KW - Laser-induced periodic surface structures (LIPSS) KW - Tribology KW - Friction and wear KW - Steel PY - 2017 AN - OPUS4-42358 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kirner, Sabrina V. T1 - LiNaBioFluid Laser-induced nanostructures as biomimetic model of fluid transport in the integument of animals N2 - Laser-induced Nanostructures as Biomimetic Model of Fluid Transport in the Integument of Animals”, aims on laser-fabrication of biomimetic surfaces with unique wetting properties, which are inspired by the hierarchical micro- and/or nano- structures of animal body surfaces. LiNaBioFluid is a Research and Innovation Action funded by the European Commissions’ Horizon 2020 - FET Open Programme, which supports early-stage research on any idea for a new technology (Grant Agreement no: 665337). It brings together 7 partners from 4 different countries and is strongly interdisciplinary combining renowned experts from the fields of zoology, physics, mechatronics, life sciences, materials sciences, laser-matter interaction, production technology, tribology, and biomimetics. www.laserbiofluid.eu/ T2 - Science Sets Sail CY - Baltic Sea DA - 2.08.2017 KW - Laser-induced periodic surface structures (LIPSS) KW - EU H2020 project KW - Biomimetics KW - Wetting KW - Tribology KW - Friction and wear KW - Laser ablation PY - 2017 AN - OPUS4-42359 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raysyan, Anna T1 - Fluorescence polarization immunoassay for determination of diclofenac in wastewater N2 - Pharmacologically active compounds are often detected in wastewater and surface waters. The nonsteroidal anti-inflammatory drug diclofenac was included in the watch list of substances in the EU that requires their environmental monitoring in the member states. DCF may harmfully influence the ecosystem and the natural organization already at concentrations of ≤1 μg/l. The fast and easy quantification of DCF is becoming a subject of global importance. Fluorescence polarization immunoassay (FPIA) is a homogeneous mix-and-read method, which does not require the immobilization of reagents, they can be performed in one phase, making it possible to analyze wastewater without any complicated pre-treatment, performed within 20–30 min. T2 - Potsdam days on Bioanalysis 2017 CY - Potsdam, Germany DA - 23.11.2017 KW - Diclofenac KW - DCF KW - FPIA KW - Wastewater PY - 2017 AN - OPUS4-43127 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wander, Lukas T1 - Keramikdurchflusszellen für das industrielle Reaktionsmonitoring mit Niederfeld-NMR-Spektroskopie N2 - Derzeit verfügbare Niederfeld-NMR-Spektrometer sind oft für Laborapplikationen konzipiert. Für den Einsatz im industriellen Prozessmonitoring müssen deshalb Anpassungen vorgenommen werden. Ein wichtiger Aspekt ist die Gestaltung der Messzelle. Sie muss über eine hohe thermische-, chemische und vor allem mechanische Beständigkeit verfügen. Hinzu kommt die Besonderheit des NMR-Experiments, das auf die Durchlässigkeit von Radiofrequenzen angewiesen ist. Keramik ist ein in der Hochfeld-NMR-Spektroskopie bewährtes Material das diese Eigenschaften vereint. Um im Prozessmonitoring die Interessen kleiner Bypass-Volumina, großer Durchflussgeschwindigkeit und großes Signal-zu-Rausch-Verhältnis mit der nötigen Vormagnetisierungszeit in Einklang zu bringen, ist eine im Messbereich aufgeweitete Zellgeometrie vorteilhaft. Die Fertigung einer Keramikmesszelle für die Niederfeld-NMR-Spektroskopie für Drücke bis 7 MPa mit dieser besonderen Geometrie wurde mit Hilfe eines modernen additiven Fertigungsverfahrens realisiert. Quantitative NMR-Messungen an konstant durch das Spektrometer strömenden Flüssigkeiten werden durch eine maximale Durchflussgeschwindigkeit limitiert. Diese wird von vielen Einflussgrößen bestimmt und sollte vor jeder quantitativen Messreihe experimentell für das individuelle System ermittelt werden. Zu diesem Zweck wurde eine automatisierte Laboranordnung konzipiert. Der Vergleich der neuen NMR-Keramikzelle mit bestehenden Messzellen u. a. anhand dieses Parameters untermauert ihre Eignung für das industrielle Prozessmonitoring. T2 - 13. Herbstkolloquium Arbeitskreis Prozessanalytik CY - Esslingen, Germany DA - 20.11.2017 KW - Keramikdurchflusszelle KW - Niederfeld-NMR KW - Online-NMR PY - 2017 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-430918 AN - OPUS4-43091 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kern, Simon T1 - Simple calibration concept of an online NMR module demonstrated in a modularised production plant N2 - Monitoring specific information (such as physico-chemical properties, chemical re-actions, etc.) is the key to chemical process control. Within the CONSENS Project, the challenge to adapt a commercially available benchtop NMR spectrometer to the full requirements of an automated chemical production environment was tack-led. The developed online NMR module was provided in an explosion proof housing and involves a compact 43.5 MHz NMR spectrometer together with an acquisition unit, a programmable logic controller for automated triggering, flow con-trol, as well as data communication. First results of an aromatic coupling reaction in lab scale showed a general feasibil-ity according to the signal information in the acquired NMR spectra even though with a considerable overlap. Due to the comparatively low field strength of the NMR spectrometer multivariate methods had to be considered for the prediction of con-centration profiles based on spectral data. Typically, for industrial application of those methods, e.g. Partial Least Squares Regression (PLS-R) as well as Indirect Hard Modeling, large amount of calibration data is demanded, which must be ac-quired in time consuming lab-scale experiments and offline analytics. When it comes to changes in raw materials (e.g., varying functional groups, additional stabi-lizing agents) calibration experiments and data evaluation models are developed again. Here we present an approach of automated data analysis tools for low field NMR spectra with minimal calibration effort. The algorithms are based on Indirect Hard Modeling, whereby each component in each mixture spectra can be rep-resented by several flexible peak functions (pure component models). This means, that only pure component NMR spectra are needed to generate a first evaluation model. The flexibility of peak functions in the spectral model can be adjusted via constraints of peak parameters. The area of any pure component model can either be converted to concentrations based on a one-point calibration on raw material concentration or even neat solvent signals. In several cases it has been shown, the IHM works almost independently of the matrix of the real samples. Such a calibration can be repeated daily in the beginning of each process run with minimal time effort. Moreover, additional pure components can be added to the model or even substitut-ed while keeping the previously adjusted peak function constraints. The proposed method exhibited good agreement of resulting concentration data from low field NMR spectra, when compared to an online high field NMR spectrometer as refer-ence instrument. T2 - 13. Kolloquium des Arbeitskreises Prozessanalytik der DECHEMA und der GDCh-Fachgruppe Analytische Chemie CY - Esslingen, Germany DA - 20.11.2017 KW - Online monitoring KW - Online NMR spectroscopy KW - Modularised production PY - 2017 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-430999 AN - OPUS4-43099 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raysyan, Anna T1 - Development of a quick test to screen for bisphenol A release from polymer materials N2 - Bisphenol A (BPA) is a common industrial chemical that is widely used as a monomer or additive in the production of polymer materials. This substance causes impairment of the childbearing function, acceleration of sexual aging, negatively impacts the brain, and also contributes to the development of certain oncological diseases, as well as increasing the risk of a fetus developing the Down syndrome. But the biggest downside of bisphenol is the fact that it accumulates in the system during its use, as well as after. Many methods have been proposed for the determination of BPA, in particular, gas and liquid chromatography. The main disadvantages of such approaches are the high cost of the equipment, the significant duration of an analysis, and difficulties in screening a large number of samples. Immunoanalytical techniques attributes are high throughput, high specificity and sensitivity, as well as low cost and simplicity. Particularly interesting as a quick test for screenings is the lateral flow immunoassay (LFIA), a format widely in use for the detection of pregnancy. LFIA for BPA have been described before, but lack sensitivity. In this work, focuses on the conjugation (by passive adsorption) efficiency of the different monoclonal antibodies with 40 nm gold nanoparticles. The effect of factors such as pH value and concentration of antibody has been quantificationally discussed using spectra methods after adding 10% NaCl which induced gold nanoparticle aggregation. Consequently, 40 nm gold nanoparticles should be labeled with antibody under optimal pH value and optimal concentrations of antibody. It will be helpful for the application of antibody-labeled gold nanoparticles for the determination of bisphenol A in aqueous solutions (water from different sources, leachates and extracts). T2 - Adlershofer Forschungsforum 2017 CY - Berlin, Germany DA - 10.11.2017 KW - Bisphenol A KW - BPA KW - LFIA KW - ELISA KW - GNP KW - Passive absorption PY - 2017 AN - OPUS4-43125 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulte, Petra T1 - Kritische Bewertung der Prüfergebnisse in chemikalienrechtlichen Verfahren: Wie agiert die Behörde? Welche Folgen haben die Ergebnisse für die Rechtsetzung? N2 - Mit nicht-konformen oder schlecht dokumentierten Prüfergebnissen können weder Behörden noch Unternehmen etwas anfangen. Belastbare und eindeutige Informationen aus den Registrierungsdossiers sind entscheidend, damit industrielle und gewerbliche Verwender der Stoffe das Gefahrenpotenzial einschätzen und ggf. Maßnahmen zum Schutz von Menschen und Umwelt treffen können. Darüber hinaus benötigen die Behörden verlässliche Daten aus den Registrierungen, um ihrer Verantwortung bei der Identifizierung regulierungsbedürftiger Stoffe nachkommen zu können. T2 - 13. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 16.11.2017 KW - Prüfmethoden KW - Einstufung KW - REACH KW - CLP KW - Registrierungsdossiers KW - SIEF KW - Qulitätssicherung KW - IUCLID KW - ECHA KW - OECD PY - 2017 AN - OPUS4-43081 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vignes, A. T1 - Current status in nanodust explosion topic N2 - Nanotechnology has been identified as a Key Enabling Technology for the European Union (Horizon 2020) and already has a wide field of applications. However, hazardous properties of nanomaterials such as their flammability and explosivity, have to be determined to ensure their sustainable development. This poster gives an overview of the current status in nanodust explosion research, standardization and european collaboration as well as highlighting current and future perspectives. T2 - 16th Congress of the French Chemical Engineering Society CY - Nancy, France DA - 11.07.2017 KW - Dust explosions KW - Nanomaterials KW - Combustible dust PY - 2017 AN - OPUS4-43084 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bouillard, J. T1 - CEN/TC 352/WG 3/PG 3 – Guidelines for Determining Protocols for the Explosivity and Flammability of Powders containing Nano-objects (for Transport, Handling and Storage) N2 - The European Committee for Standardization (CEN) set up the Technical Committee 352 (CEN/TC 352) in 2006 to develop and maintain up to date standards in the field of nanotechnologies. Part of the work group (WG 3) dedicated to Health, Safety and Environment, the CEN/TC 352/WG 3/PG 3 led by INERIS was constituted to develop a Technical Specification (TS) for the determination of explosivity and flammability properties of manufactured nano-objects in powder form (2013-2018). T2 - 2nd Open Meeting - European Conference on Standardization for Nanotechnologies and Nanomaterials: Reliable data for an effective management of nanomaterials CY - Valletta, Malta DA - 10.06.2017 KW - Dust explosions KW - Nanomaterials KW - Combustible dust PY - 2017 AN - OPUS4-43076 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rotureau, P. T1 - Predecitive methods for determining the thermal decomposition properties of hazardous substances N2 - For substance classes like organic peroxides and self-reactive substances a model should be developed to predict thermal decomposition properties like the Self-Accelerating Decomposition Temperature (SADT). The applied Quantative Structur-Property Relationship (QSPR) model correlates the molecular structur with the properties of the substances, whereby a consolidated database is a precondition for a reliable model and finally for the prediction. T2 - 10th World Congress of Chemical Engineering (WCCE) CY - Barcelona, Spain DA - 01.10.2017 KW - Organic peroxides KW - Self-reactive substances KW - QSPR KW - SADT PY - 2017 AN - OPUS4-43058 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bouillard, J. T1 - CEN/TC 352/WG 3/PG 3 -Guidelines for determining protocolas for the explosivity and flammability of powders containing nano-objects (for transport, handling and storage) N2 - The European Committee for Standardization (CEN) set up the Technical Committee 352 (CEN/TC 352) in 2006 to develop and maintain up to date standards in the field of nanotechnologies. Part of the work group (WG 3) dedicated to Health, Safety and Environment, the CEN/TC 352/WG 3/PG 3 led by INERIS was constituted to develop a Technical Specification (TS) for the determination of explosivity and flammability properties of manufactured nano-objects in powder form (2013 - 2018). T2 - 3rd Open Meeting Europe Conference on Standardization CY - Brussels, Belgium DA - 02.10.2018 KW - Nanopowders KW - Dust explosion KW - Safetx characteristics PY - 2018 AN - OPUS4-47053 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chao, Madlen T1 - Influence of moisture and grain sizes on the analysis of nutrients in agricultural soils using LIBS N2 - Over the last few years, there has been a growing interest to apply spectroscopic methods to the agricultural field for better understanding of soil properties and for efficient, sustainable management of arable land. Within the project I4S (intelligence for soil), funded by the BMBF, an integrated system for site-specific soil fertility management is developed, consisting of different sensors like X-Ray fluorescence analysis (XRF), near-infrared spectroscopy (NIR) and laser-induced breakdown spectroscopy (LIBS). LIBS provides a fast and simultaneous multi-element analysis with little to no sample preparation, which makes it a suitable method for real-time analysis on the field. The quantification of macro and micro nutrients in soils with LIBS is challenging due to matrix effects, different levels of moisture content and varying grain sizes. First studies revealed that the problems with matrix effects can be overcome by using well characterised soils as reference materials and chemometric tools like Partial Least Squares Regression(PLSR) for calibration. The next step was to investigate the influence of moisture and grain sizes on the LIBS signal, which is a big issue when measuring directly on the field. The results showed that the LIBS signal decreases exponentially with increasing moisture content, as most of the laser energy is used for vaporising the water. With moisture contents of 30 % or higher almost no signal can be detected. This decrease is more severe for sandy soils than for clay soils. First tests of different grain size distributions indicate that the variation of the LIBS signal increases with growing amounts of larger grains. This results in a higher standard deviation, because of a poorer reproducibility of the plasma formation and plasma characteristic. With the help of chemometric tools the influence of moisture and grain sizes should be implemented in the calibration model for accurate analysis of nutrient composition in agricultural soils. T2 - 14. Kolloqium Ak Prozessanalytik CY - Hannover, Germany DA - 03.12.2018 KW - Soil KW - LIBS KW - Moisture KW - PLSR KW - Grain size PY - 2018 AN - OPUS4-47056 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Vehicle-track interaction and soil dynamics N2 - The dynamic compliance of different railway tracks on different layered soils have been calculated using a combined finite-element and boundary-element method: conventional track on homogeneous soil with different stiffness, extreme normal and inverse layering of the soil, plates in and on top of the soil (slab track on various soils), conventional track with elastic rail pads. T2 - IAVSD (Vehicle System Dynamics) CY - Budapest, Hungary DA - 25.8.1997 KW - Railway track KW - Layered soil KW - Vehicle-track interaction PY - 1997 AN - OPUS4-47106 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gulikers, J. T1 - Practical application of Laser Induced Breakdown Spectroscopy for determination of the chloride content in concrete structures N2 - The relevance of chloride measurements in practice for durability condition assessment and a description of the working principle of LIBS will be given. A comparison of chloride profiles obtained by the common wet chemical analysis and results from LIBS measurements are shown to demonstrate the accuracy of the LIBS-technique. In addition, an example on the extra information resulting from measurements performed with LIBS for improvement of condition assessment and prediction will be shown. T2 - Conference celebrating the Laboratory of Construction Materials (EPFL) Centennial CY - Lausanne, Switzerland DA - 19.08.2018 KW - LIBS KW - Concrete KW - Chlorride KW - Condition assesment PY - 2018 AN - OPUS4-47109 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Transformation of the antidiabetic drug metformin N2 - For years there have been more and more reports on the presence of drugs in the aquatic environment. Due to the demographic change, the consumption of pharmaceuticals has risen sharply. After taking the drugs, they are partly metabolized in the human body. However, the metabolism is not complete so that both the metabolites and non-metabolized amounts of the parent compounds are excreted. These compounds reach the waste water and afterwards the sewage treatment plants. In sewage treatment plants transformation products can be formed by the oxidative conditions during wastewater treatment processes. The transformation products may have a higher toxicity than the actual environmental pollutants and are often only partly removed during the waste water treatment. Since a lot of these compounds are still unknown, the transformation products are not detected by target analysis used in sewage treatment plants and are often released undetected in the aquatic ecosystems. The released substances may be subject to additional transformation processes in the environment. Pharmaceuticals produced in high amounts can be already detected in the μg/L range in water bodies worldwide. Metformin and its major transformation product guanylurea are one of the main representatives. Metformin is the drug of choice for treating type 2 diabetes. The drug therapy for diabetes mellitus has increased significantly in recent years. In the year 2015 1500 tons of metformin were prescribed in Germany (for statutory insured persons). Metformin is not metabolized in the human body and is excreted unchanged therefore concentrations between 57 μg/L and 129 μg/L are found in German waste water treatment plants influents. In this work the transformation of the antidiabetic drug metformin is investigated. The degradation of metformin is initialize by commercial water treatment techniques like UV-radiation or noncommercial techniques like heterogenous photocatalysis based on titanium dioxide. The degradation of metformin and resulting transformation products are analyzed by LC-MS/MS and LC-HRMS. T2 - SPEA 10 CY - Almeria, Spain DA - 04.06.2018 KW - Metformin KW - Photocatalysis PY - 2018 AN - OPUS4-47030 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Büchele, Dominique T1 - Development of a robust calibration model for determination of nutriens in soils using EDXRF N2 - As part of the BonaRes research initiative, funded by the BMBF, strategies are being developed to use soil as a sustainable resource in the bio economy. The interdisciplinary subproject I4S - “Intelligence for soil” - is responsible for the development of an integrated system for site-specific management of soil fertility. For this purpose, a platform is constructed and various sensors are installed. Real-time data will be summarised in models and decision-making algorithms will be used to control fertilisation and accordingly improve soil functions. Aim of the BAM in the frame of I4S is the characterisation of an energy-dispersive X-ray fluorescence (EDXRF) based sensor for robust determination of plant essential nutrients in soil. First a principal component analysis (PCA) was used to identify outliers and to observe the largest variance within the German soil samples. It could be monitored that splitting of the samples was due to their iron content. Given that clay samples contain high amounts of iron and sandy samples low amounts, a classification of the samples by their soil texture according to VD LUFA was possible. Considering the complex composition of soil, a matrix-specific calibration was carried out by univariate and multivariate data analysis. The figures of merit demonstrated that a more robust calibration model with negligible matrix effects can be obtained by a multivariate approach using partial least squares regression (PLSR). A better correlation between predicted values compared to reference values for German soil samples was observed for the chemometric calibration model than for the univariate one. Different factors can affect the received calibration models such as moisture and particle size distribution which is especially important due to later online analysis. In first studies the influence of moisture on the detection of plant essential nutrients was investigated. With increasing water content, the characteristic fluorescence peaks decrease and start to increase again at a water content of 15 %. With lower moisture content the soil agglomerates which leads to lower packing of the sample, resulting in a rougher surface which negatively influence the signals. Whereas, agglomerates are not formed at higher water content. This allows the sample to be packed more tightly thus a smoother surface and a better homogeneity is obtained. Furthermore, particle size distribution leads to significantly higher uncertainties and lower signals when comparing grounded (< 500 μm) and not grounded (< 2 mm) samples. This can be explained by amplifying of the already known inhomogeneity of soils. Both factors must be included in the chemometric PLSR to obtain robust calibration models for each macro and micro nutrient. T2 - 14. Herbstkolloquium Prozessanalytik CY - Hannover, Germany DA - 03.12.2018 KW - Soil KW - Grain size KW - Moisture KW - EDXRF KW - PLSR PY - 2018 AN - OPUS4-47057 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Said, Samir T1 - Environmental vibration due to railway traffic with different train speeds N2 - Measurement of railway vibration on a bridge, a surface and a tunnel line. Amplitude-distance law for different train speeds. Theoretical and experimental transfer functions of the soil. Spectra of the ground vibration at r = 3, 5, 10, 20, 30 and 50 m for the train speeds 60, 100, 160 km/h. T2 - 3rd International Symposium on Environmental Vibrations CY - Taipei, Taiwan DA - 28.11.2007 KW - Ground vibration KW - Train passage KW - Train speed PY - 2007 AN - OPUS4-47087 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Said, Samir T1 - Environmental vibration due to explosions – propagation of different waves N2 - Time records of the soil response to the hammer and the Explosion excitation. Spectra of the soil response to the hammer and explosion excitation. Amplitude-distance law for different TNT weight equivalents. T2 - 3rd International Symposium on Environmental Vibrations CY - Taipei, Taiwan DA - 28.11.2007 KW - Explosion KW - Ground vibration KW - Wave propagation KW - Amplitude-distance law PY - 2007 AN - OPUS4-47088 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Said, Samir T1 - Environmental vibration due to heavy mass drop N2 - Drop test facility of BAM and the location of strain, stress, velocity and acceleration sensors. Time records of the concrete strain, the soil stress and the foundation acceleration. T2 - 3rd International Symposium on Environmental Vibrations CY - Taipei, Taiwan DA - 28.11.2007 KW - Drop test KW - Foundation behaviour KW - Soil stress KW - Foundation strain KW - Foundation acceleration PY - 2007 AN - OPUS4-47089 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Ground vibration due to railway traffic - the calculation of the effects of moving static loads and their experimental verification N2 - The regular static Response is important at low frequencies and near-field. The regular dynamic response due to sleeper passage is more important at high frequencies. The irregulär static response due to randomly varying soil properties is more important at medium frequencies and at far-field. T2 - 8th Workshop on Railway Noise and Vibration CY - Buxton, UK DA - 08.09.2004 KW - Static railway loads KW - Ground vibration KW - Sleeper passage KW - Axle-sequence PY - 2004 AN - OPUS4-47090 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wack, Yannick T1 - Simulation der Schallausbreitung in Eisenbahnschienen mit FEM und SAM N2 - Die Simulation von Ultraschallausbreitung ist ein wesentliches Hilfsmittel zur Optimierung von Prüfanordnungen und wird zunehmend in der Prüfvorbereitung eingesetzt. Eisenbahnschienen sind Bauteile mit komplexer Geometrie und im eingebauten Zustand eingeschränkter Zugänglichkeit. Bei der Prüfung im Feld entstehen aus der Schienengeometrie komplexe Echosignale mit Formanzeigen, die schwer zu interpretieren sind. Für das bessere Verständnis der Schallausbreitung in der Eisenbahnschiene wird diese in einem ersten Schritt mit Hilfe verschiedener Ansätze modelliert. Hierbei werden Finite Elemente Methoden und semi-analytischen Modelle verwendet. In einem zweiten Schritt werden die Ergebnisse der Simulationsmodelle einander gegenübergestellt und mit Messungen an realen Schienen verglichen. Ziel dieser Untersuchungen ist die Validierung von Simulationsverfahren mit Hilfe von Messdatensätzen und Überprüfung der Anwendbarkeit bei der Bewertung von Ergebnissen der Schienenprüfung. T2 - DGZfP-Jahrestagung 2018 CY - Leibzig, Gemany DA - 07.05.2018 KW - Ultraschall KW - FEM KW - Eisenbahn KW - Simulation KW - SAM PY - 2018 AN - OPUS4-47412 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wack, Yannick T1 - Simulation der Schallausbreitung in Eisenbahnschienen mit FEM und SAM N2 - Die Simulation von Ultraschallausbreitung ist ein wesentliches Hilfsmittel zur Optimierung von Prüfanordnungen und wird zunehmend in der Prüfvorbereitung eingesetzt. Eisenbahnschienen sind Bauteile mit komplexer Geometrie und im eingebauten Zustand eingeschränkter Zugänglichkeit. Bei der Prüfung im Feld entstehen aus der Schienengeometrie komplexe Echosignale mit Formanzeigen, die schwer zu interpretieren sind. Für das bessere Verständnis der Schallausbreitung in der Eisenbahnschiene wird diese in einem ersten Schritt mit Hilfe verschiedener Ansätze modelliert. Hierbei werden Finite Elemente Methoden und semi-analytischen Modelle verwendet. In einem zweiten Schritt werden die Ergebnisse der Simulationsmodelle einander gegenübergestellt und mit Messungen an realen Schienen verglichen. Ziel dieser Untersuchungen ist die Validierung von Simulationsverfahren mit Hilfe von Messdatensätzen und Überprüfung der Anwendbarkeit bei der Bewertung von Ergebnissen der Schienenprüfung. T2 - 10. Fachtagung - ZfP im Eisenbahnwesen 2018 CY - Wittenberge, Germany DA - 13.03.2018 KW - Ultraschall KW - FEM KW - Eisenbahn KW - Simulation KW - SAM PY - 2018 AN - OPUS4-47415 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knieschewski, Arno T1 - Cheaper compliance verification for the energy label of tumble dryers N2 - The energy label is a tool that informs the consumer about the energy consumption of certain appliances. The tumble dryer is one of these appliances that were considered relevant for receiving an energy label in the European Union. All classes and values on the energy label are stated by the manufacturers. In order to guarantee that the manufacturers do not cheat and appliances are labeled correctly, the stated values are checked by the market surveillance of each country in compliance verification tests. However, in the case of tumble dryers these compliance verification tests are very expensive and can only be realized for a small sample size out of models which are available on the market. The fewer compliance verification tests are carried out, the higher is the chance that there are incorrectly labeled appliances on the market. Therefore, a modification of the test standard for tumble dryers has been analyzed which would reduce the costs of a performance test by at least 11 %. T2 - WSED 2018 - World Sustainable Energy Days CY - Wels, Austria DA - 28.02.2018 KW - Tumble dryer KW - Energy label KW - Test standard PY - 2018 AN - OPUS4-47473 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völker, Christoph T1 - Visualization of automated multi‐sensor NDT assessment of concrete structures (NDT Data Fusion) N2 - Nondestructive testing(NDT) of concrete buildings allows efficient repair measures. Multi-sensor platforms collect large data sets but the data analysis is typically performed manually. Data Fusion uses the full potential of a multi-sensory data set in order to: - improve information quality (reliability, robustness, accuracy, clarity, completeness) - enable automated algorithm based data analysis. This poster summarizes results of the IGSTC-project entitled "NDT-Data Fusion" (short title) and demonstrates a significant improvement in the testing performance for the example of corrosion detection. T2 - IGSTC-Partners Meeting 2017 CY - Jodhpur, India DA - 22.10.2017 KW - NDT KW - Data Fusion KW - Concrete KW - Corrosion KW - Data analytics PY - 2017 AN - OPUS4-42716 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herzel, Hannes T1 - Project ASHES – nutrient recycling from the thermo-chemical processing of waste bagasse and straw N2 - Recycling of nutrients from residues of thermo-chemical processing of bagasse/sugar cane straw. The project ASHES is a German-Brazilian collaborative research project and is focused on the recycling of nutrients from residues of thermo-chemical processing of by-products of sugar cane industry (bagasse/straw) in Brazil. The challenge of the project is to increase the energy efficiency of thermal conversion (combustion/gasification) and to enable the recycling of process ashes to close material cycles by gaining adequate and competitive fertilizers as well as (functional) fillers in (bio-)polymer compounds. For this purpose, phosphorus salts are recovered from bagasse, straw, filtercake and vinasse with leaching and precipitation. The AshDec process was used to increase the availability of phosphorus for plant uptake in the ashes. Additives like sewage sludge and chicken manure were also tested. Different fertilizer formulations are granulated/pelletized and tested regarding their storage/handling characteristics. The fertilizing effects are evaluated in plant growth tests and compared with common extraction methods and the new promising diffusive gradients in thin films (DGT)-method. The results of the agronomic investigation of various ashes based products should provide targeted and integrated recommendations for the thermal conversion of bagasse/straw to secondary fertilizers in line with the so-called Next Generation fertilizer strategy. ASHES-partners are Fraunhofer UMSICHT (coordinator), Karlsruhe Institute of Technology (KIT), Bundesanstalt für Materialforschung und -prüfung (BAM), Fraunhofer IGB, Forschungszentrum Jülich (FZJ), CUTEC Institute, the Brazilian Center for Research in Energy and Materials (CNPEM), Federal Institute of Goiás (IFG), Laboratório Nacional Agropecuario (LANAGRO) and the Universidade Federal de Goiás (UFG), as well as the companies Tecnaro and Outotec. T2 - European nutrient event CY - Basel, Switzerland DA - 18.10.2017 KW - Phosphorus KW - Recycling KW - Thermochemical KW - Bagasse KW - AshDec PY - 2017 AN - OPUS4-42653 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Griepentrog, Michael T1 - Size effects in electrodeposited Ni-coatings N2 - Polycrystalline Ni materials with grain sizes less than 100 nm (nano crystalline NC) and with grain sizes in the micrometer range (micro crystalline MC) in form of thin films have become important in many technologies due to their improved physical, chemical and mechanical properties. Usual the mechanical properties of such coatings are described by a Hardness value and a Young´s modulus measured by Instrumented Indentation Testing (IIT).The behavior of such coatings during indentation test is influenced by different size effects having their representative length scale – grain size, coating thickness, length that characterizes the depth dependence of the hardness (Indentation Size Effect ISE). To estimate realistic values for the intrinsic coating Hardness and Young´s modulus all size effects have to be considered. For this work thin nano crystalline Ni – coatings (average grain size 30 nm) with thickness from 1 μm to 5 μm were electrodeposited on brass substrates. Indentation tests in the continuous stiffness measurement (CSM) mode were provided on as prepared Ni – coatings using a G200 Nanoindentation system (Fa. Keysight). For estimation of the intrinsic hardness of the coatings from composite hardness values calculated from the measured force –displacement curve using the Oliver & Pharr method, the model described by Z.S. Ma [1] was used. It was found that the experimental data can be well described by the model. The fitted values for the intrinsic hardness and the fitting parameters will be given. The different values of intrinsic hardness and of length characterizing depth dependence of the hardness for different coating thickness are discussed as results of changes in the coating structure because of changes in deposition parameters. [1] Z.S. Ma, Y.C. Zhou, S.G. Long, C. Lu: On the intrinsic hardness of a metallic film/substrate system: Indentation size and substrate effects. International Journal of Plasticity 34 (2012) 1-11. This work is supported by European Metrology Program for Innovation and Research (EMPIR) (JRP 14IND03 Strength – ABLE) T2 - Conference: Nanomechanical Testing in Materials Research and Development CY - Dubrovnik, Croatia DA - 01.10.2017 KW - Size effect KW - Substrate effect KW - Electrodeposited Ni - coatings KW - Instrumented indentation testing PY - 2017 AN - OPUS4-42664 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Orrin-Seemann, Daniel T1 - Dehnungsbasierte Methodik zur Festigkeitsbewertung von Druckbehältern unter Berücksichtigung von duktiler Schädigung N2 - Das Poster stellt ein Konzept zur Bewertung der strukturellen Integrität von havarierten Tankbehältern vor. Es wurde ein dehnungsbasiertes Konzept eingeführt, welches einen Brückenschlag zwischen duktiler Schädigung und dem Integritätszustand des Behälters herstellt. Diese Thematik entspringt aus einem Kooperationsvorhaben der Organisationseinheiten 5.2 und 3.2. T2 - 3. Workshop im Themenfeld Material CY - Konferenzsaal in Adlershof, Berlin, Germany DA - 12.10.2016 KW - Festigkeitsbewertung KW - Druckbehälter KW - Duktile Schädigung KW - Berstversuch KW - Simulation PY - 2016 AN - OPUS4-42339 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hilgenberg, Kai T1 - Localized laser dispersing of titanium-di-boride with pulsed fiber laser N2 - In this paper, titanium-di-boride is dispersed on a cold-working tool steel by use of a pulsed fiber laser with high beam quality to produce separated and elevated surface features. The potential to adjust the geometry as well as the mechanical properties of the produced structures in dependence on the process parameters (pulse power, pulse duration) is described by means of metallographic and topographical investigations. It can be ascertained that very hard (hardness > 1000 HV1) surface features of different shape (spots and short lines) can be produced. They are characterized by a fine-grained microstructure resulting from a rapid solidification and finely dispersed TiB2 particles. Finally, the paper proposes different applications for this structuring technique. T2 - ICALEO 2017 - International congress on applications of lasers & electro-optics CY - Atlanta, GA, USA DA - 22.10.2017 KW - Laser dispersing KW - Titanium-di-boride KW - Surface structuring KW - Laser implantation PY - 2017 AN - OPUS4-42867 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hupatz, H. T1 - Deposition of redox-switchable rotaxanes on surfaces N2 - Deposition of Redox-switchable rotaxanes on surfaces Nature has created molecular machines which can perform a variety of different tasks. They exhibit defined operational pathways and order, resulting in directed macroscopic effects. Within the last decades researchers have been developing numerous artificial molecular machines which are so far mostly operating in solution. However, this represents a major obstacle for the generation of a macroscopic output, due to the random orientation of molecules in solution. As a general approach to this problem, interfaces have been used to generate ordered arrays of functional molecules. Recently, we developed a new class of redox-switchable crown ether/ammonium-based [2]- and [3]rotaxanes which incorporate redox-active tetrathiafulvalene and naphthalene diimide units in their wheels resulting in emergent optoelectronic properties. Electrochemical stimuli influence the interactions between the two macrocycles of [3]rotaxanes and induce conformational changes. In a proof-of-principle study [2]pseudorotaxanes were deposited on gold surfaces by “click”-reaction to azide-terminated self-assembled monolayers to generate ordered arrays of redox-active rotaxanes on-surface. X-ray photoelectron spectroscopy (XPS) confirms the successful deposition of a rotaxane monolayer, though angle-resolved near-edge X-ray absorption fine structure spectroscopy (NEXAFS) exhibits poor order of the rotaxanes. Following, new terpyridine-stoppered rotaxanes will be synthesised opening a pathway for the deposition of [2]- and [3]rotaxanes in a layer-by-layer metal-mediated self-assembly procedure. This approach would allow for a programmed sequence of different rotaxanes in multilayers. Electrochemical on-surface switching will be investigated by angle-resolved NEXAFS spectroscopy, XPS, cyclic voltammetry and UV/Vis spectroscopy. A more detailed understanding of the electron-transfer between the surface and the different rotaxane layers as well as of the on-surface switching could give rise to potential applications like optoelectric data-storage devices or potential-driven molecular motors. T2 - Gordon Research Conference - Artificial Molecular Switches & Motors CY - Holderness, NH, USA DA - 11.06.2017 KW - Rotaxane KW - Immobilization KW - XPS KW - NEXAFS PY - 2017 AN - OPUS4-42843 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank T1 - Numerical simulation of the gas filling N2 - It was possible to achieve an error as 9% or even 0% at certain time steps, as shown in the graph above, the usage of UDF code has major importance in achieving the pressure Profile required, and it heat transfer between the bottle itself and the surroundings was taken into consideration which of course had a high influence on how the temperature of the air flask changes. T2 - ASME 2017 CY - Tampa, FL, USA DA - 03.11.2017 KW - Numerical Simulation KW - Gas Filling KW - Compoite Receptacle PY - 2017 AN - OPUS4-42847 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hupatz, H. T1 - Redox-Switchable Rotaxanes on Surfaces N2 - Nature has created molecular machines which can perform a variety of different tasks. They exhibit defined operational pathways and order, resulting in directed macroscopic effects. Within the last decades researchers have been developing numerous artificial molecular machines which are so far mostly operating in solution. However, this represents a major obstacle for the generation of a macroscopic output, due to the random orientation of molecules in solution. As a general approach to this problem, interfaces have been used to generate ordered arrays of functional molecules. Recently, we developed a new class of redox-switchable crown ether/ammonium-based [2]- and [3]rotaxanes which incorporate redox-active tetrathiafulvalene and naphthalene diimide units in their wheels resulting in emergent optoelectronic properties. Electrochemical stimuli influence the interactions between the two macrocycles of [3]rotaxanes and induce conformational changes. In a proof-of-principle study [2]pseudorotaxanes were deposited on gold surfaces by “click”-reaction to azide-terminated self-assembled monolayers to generate ordered arrays of redox-active rotaxanes on-surface. X-ray photoelectron spectroscopy (XPS) confirms the successful deposition of a rotaxane monolayer, though angle-resolved near-edge X-ray absorption fine structure spectroscopy (NEXAFS) exhibits poor order of the rotaxanes. Following, new terpyridine-stoppered rotaxanes will be synthesised opening a pathway for the deposition of [2]- and [3]rotaxanes in a layer-by-layer metal-mediated self-assembly procedure. This approach would allow for a programmed sequence of different rotaxanes in multilayers. Electrochemical on-surface switching will be investigated by angle-resolved NEXAFS spectroscopy, XPS, cyclic voltammetry and UV/Vis spectroscopy. A more detailed understanding of the electron-transfer between the surface and the different rotaxane layers as well as of the on-surface switching could give rise to potential applications like optoelectric data-storage devices or potential-driven molecular motors. T2 - GDCh-Wissenschaftsforum Chemie CY - Berlin, Germany DA - 10.09.2017 KW - NEXAFS KW - Rotaxane KW - XPS KW - Surface characterization PY - 2017 AN - OPUS4-42848 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank T1 - Analysis of the capsizing of a tanker in the Rhine river N2 - Simplified model made possible to get a physical perspective about this accident T2 - IMECE 2017 CY - Tampa, FL, USA DA - 03.11.2017 KW - Tanker KW - Rhine river KW - Capsizing PY - 2017 AN - OPUS4-42850 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank A1 - Romero-Navarrete, José A. T1 - A simplified model to simulate the pitch instability of a partially filled tank trailer N2 - Singular situation of pitch instability, modeled through simplified models. More analysis is required to proposed vehicle design improvements. T2 - IMECE 2017 CY - Tampa, FL, USA DA - 03.11.2017 KW - Pitch instability KW - Tank trailer KW - Simulation PY - 2017 AN - OPUS4-42851 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Myrach, Philipp A1 - Ziegler, Mathias T1 - Online Laser-thermografische Rissprüfung an Stahl bei hohen Temperaturen N2 - Die Detektion bzw. Charakterisierung von Oberflächenrissen in Stahl ist eine herausfordernde Aufgabe für die zerstörungsfreie Prüfung. Dies gilt insbesondere, wenn eine solche Prüfung bereits während der Produktion selbst erfolgen soll. Die hier vorgefundenen Randbedingungen, wie z.B. die hohen Probentemperaturen (>700°C) oder Vorschubgeschwindigkeiten von bis zu 0,9 m/min, machen die Anwendung etablierter und vor allem berührender ZfP-Methoden praktisch meist unmöglich. Laser-thermografische Verfahren können hier eine Alternative bieten, da sie berührungslos und schnell arbeiten. Wir stellen die Ergebnisse einer Weiterentwicklung der Laser-thermografischen Prüfung vor, bei der die Anwendbarkeit bzw. die Übertragbarkeit der Methode auf die Bedingungen der Stahlproduktion untersucht wurde. Neben der Simulation der Produktionsbedingungen im Labor und der experimentellen Untersuchung der entscheidenden Einflussgrößen, wurden umfangreiche FEM-Simulationen durchgeführt. Mit Hilfe dieser theoretischen und experimentellen Ergebnisse wurde das Verfahren auch hinsichtlich der Analyse-Algorithmen weiterentwickelt, um eine zuverlässige und schnelle In-Line Prüfung während des Produktionsprozesses zu ermöglichen. Um zudem die Fähigkeiten der Thermografiekamera für schnelle online-Messungen und ihre Integrierbarkeit in verschiedene Anwendungssysteme zu verbessern, wurde die für die Verarbeitung der Detektordaten erforderliche Non-Uniformity Correction der Pixeldaten auf schneller Spezialhardware innerhalb der Kamera implementiert. T2 - Thermografie-Kolloquium 2017 CY - Berlin, Germany DA - 28.09.2017 KW - Rissprüfung KW - Laserthermografie KW - Thermografie KW - Risse PY - 2017 AN - OPUS4-42922 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wander, Lukas T1 - Speeding up microplastics analysis with modern NIR spectroscopy N2 - Annually vast amounts of plastics are produced world-wide. However, recycling and waste management is still insufficient resulting in large quantities of plastics being released into the environment. Degradation by sunlight, mechanical and biological factors lead to the breakdown of this waste into little fragments. By convention particles smaller than 5 mm are referred to as microplastics (MP). The occurrence of MP has been reported by researchers virtually all around the globe. Gaining knowledge on MP is currently a time-consuming process because analysis mainly relies on micro-infrared and micro-Raman methods. Prior to that the particles need to undergo purification and enrichment. Thus, only small numbers and volumes of samples can be investigated. Here we tested NIR spectroscopy combined with a multivariate data analysis as a means of speeding up the process of MP analysis. Experiments were performed using the most abundant polymers polyethylene, polypropylene, polyethylene terephthalate and polystyrene. MP samples were obtained by adding the cryomilled and sieved (<125 µm) particles to approximately 1 g of standard soil at 0,5–10 mass%. Spectra were recorded with a fiber optic reflection probe connected to a FT-NIR spectrometer. 5–10 spectra recorded of each sample were used for the calibration of chemometric models (partial least squares regression, PLSR). “Unknown” test samples were then used to test the model’s capability to predict the type and amount of polymer. In samples containing 1–5 % of the polymers the prediction yielded the highest degree of agreement with the gravimetric reference values. At low polymer loads some false positive results in the identification were observed. Large amounts of polymers limited the prediction capability by a nonlinear behaviour of the absorption. Further testing was done with real world samples such as compost and washing machine filters. Even though the calibration did not account for these highly complex sample compositions, satisfactory results could be achieved. T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 10.11.2017 KW - NIR spectroscopy KW - Microplastics KW - Mikroplastik KW - Chemometrics PY - 2017 AN - OPUS4-42916 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosemann, Paul T1 - Wärmebehandlung und Korrosionsbeständigkeit druckaufgestickter nichtrostender Stähle N2 - Gefüge und Eigenschaften nichtrostender Stählen werden maßgeblich von ihrer chemischen Zusammensetzung und der Wärmebehandlung bestimmt. Eine spezielle Werkstoffgruppe der austenitischen nichtrostenden Stähle enthält ca. 19 Gew.-% Mangan und 0,8 Gew.-% Stickstoff, um das austenitische Gefüge ohne das Legieren mit Nickel sicherzustellen. Die herausragenden mechanischen Eigenschaften dieser Werkstoffe (Rm von 900 2.000 MPa, A5 > 50 %, Av > 350 J) werden nach der Wärmebehandlung (Lösungsglühen und Abschrecken) durch gezielte Kaltverfestigung eingestellt. Das Lösungsglühen beseitigt vorhandene Kaltverfestigung und unerwünschte Ausscheidungsphasen (Cr2N, M23C6 und Sigma-Phase) und bewirkt die homogene Verteilung der Legierungselemente (insbesondere Stickstoff) im Austenit. Dies ist zur Erzielung der Korrosionsbeständigkeit von entscheidender Bedeutung. Im Poster werden systematische Untersuchungen zur Korrosionsbeständigkeit dieser vielversprechenden Werkstoffklasse vorgestellt und die Interaktion zwischen Legierungszusammensetzung, Wärmebehandlung, Gefüge und Korrosionsbeständigkeit dargestellt. Insbesondere der Einfluss von Warmauslagerungsversuchen nach dem Abschrecken wird dabei charakterisiert. Die vom Gefüge bedingten Veränderungen der Korrosionsbeständigkeit werden durch verschiedene Methoden (EPR, KorroPad, Lochkorrosionspotentiale) ermittelt und interpretiert. T2 - Werkstoffwoche 2017 CY - Dresden, Germany DA - 27.09.2017 KW - Wärmebehandlung KW - Korrosion KW - Nichtrostender Stahl KW - EPR KW - KorroPad KW - Sensibilisierung KW - Stickstoff KW - ThermoCalc PY - 2017 AN - OPUS4-42831 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dieck, S. A1 - Ecke, M. A1 - Harnisch, K. A1 - Rosemann, Paul A1 - Halle, T. T1 - Gefüge- und Phasenanalyse biokompatibler Co-Cr-Mo-Legierung N2 - Co-Cr-Mo-Werkstoffe sind im Bereich der Biomaterialien weit verbreitet und werden für Endoprothesen eingesetzt. Deren Lebensdauer ist jedoch durch tribologische und korrosive Dauerbelastung begrenzt. Um die Anzahl operativer Eingriffe am Patienten zu minimieren, ist es notwendig den Werkstoff hinsichtlich Verschleißbeständigkeit und Korrosionsbeständigkeit zu optimieren. Hierfür ist ein umfassendes Verständnis der legierungsabhängigen Phasenbildung und –entwicklung während Herstellung und Wärmebehandlung notwendig. An einer speziellen Co-Cr-Mo Legierung werden verschiedene Untersuchungen zur Gefügecharakterisierung durchgeführt. Dabei werden die auftretenden Phasen thermodynamisch berechnet, mittels XRD nachgewiesen, die Phasenmorphologie durch EBSD analysiert, die Elementverteilung durch EDX-Analyse ermittelt und die Ergebnisse durch Farbätzen verifiziert. Das Ziel der Untersuchungen ist es, Optimierungspotentiale bei Herstellung und Wärmebehandlung zu identifizieren. T2 - Werkstoffwoche 2017 CY - Dresden, Germany DA - 27.09.2017 DA - 29.09.2017 KW - CoCrMo KW - Gefüge KW - ThermoCalc KW - EBSD KW - Farbätzen PY - 2017 AN - OPUS4-42832 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, C. T1 - Wärmebehandlung und Korrosionsbeständigkeit druckaufgestickter nichtrostender Stähle N2 - Gefüge und Eigenschaften nichtrostender Stählen werden maßgeblich von ihrer chemischen Zusammensetzung und der Wärmebehandlung bestimmt. Eine spezielle Werkstoffgruppe der austenitischen nichtrostenden Stähle enthält ca. 19 Gew.-% Mangan und 0,8 Gew.-% Stickstoff, um das austenitische Gefüge ohne das Legieren mit Nickel sicherzustellen. Die herausragenden mechanischen Eigenschaften dieser Werkstoffe (Rm von 900 2.000 MPa, A5 > 50 %, Av > 350 J) werden nach der Wärmebehandlung (Lösungsglühen und Abschrecken) durch gezielte Kaltverfestigung eingestellt. Das Lösungsglühen beseitigt vorhandene Kaltverfestigung und unerwünschte Ausscheidungsphasen (Cr2N, M23C6 und Sigma-Phase) und bewirkt die homogene Verteilung der Legierungselemente (insbesondere Stickstoff) im Austenit. Dies ist zur Erzielung der Korrosionsbeständigkeit von entscheidender Bedeutung. Im Poster werden systematische Untersuchungen zur Korrosionsbeständigkeit dieser vielversprechenden Werkstoffklasse vorgestellt und die Interaktion zwischen Legierungszusammensetzung, Wärmebehandlung, Gefüge und Korrosionsbeständigkeit dargestellt. Die vom Gefüge bedingten Veränderungen der Korrosionsbeständigkeit werden durch verschiedene Methoden ermittelt und interpretiert. T2 - GfKORR-Jahrestagung 2017 CY - Frankfurt a. M., Germany DA - 07.11.2017 KW - Wärmebehandlung KW - Korrosion KW - Nichtrostender Stahl KW - EPR KW - KorroPad KW - Sensibilisierung KW - Stickstoff KW - ThermoCalc PY - 2017 AN - OPUS4-42833 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kauss, N. A1 - Rosemann, Paul T1 - Sensibilisierungsverhalten vom nichtrostenden Lean-Duplexstahl 1.4062 N2 - Der nichtrostende Lean-Duplexstahl 1.4062 (X2CrNiN22-2) verbindet die hohe Festigkeit des Ferrits mit der Duktilität und Zähigkeit des Austenits in einem zweiphasigen Gefüge mit sehr hoher Korrosionsbeständigkeit. Die höchste Korrosionsbeständigkeit wird erreicht, wenn das ferritisch-austenitische Gefüge frei von weiteren Sekundärphasen ist. Dies wird durch ein gezieltes Lösungsglühen bei 1050 °C mit anschließender Abschreckung in Wasser erreicht. Durch thermische Beeinflussung (z.B. beim Schweißen) können Sekundärphasen ausgeschieden und die Korrosionsbeständigkeit des Werkstoffs gesenkt werden. Dies wurde durch eine isotherme Warmauslagerung bei 500 °C bis 900 °C für 0,1 h bis zu 72 h simuliert. Die Veränderung der Korrosionsbeständigkeit wurde mit dem DL-EPR-Verfahren und durch die angepasste KorroPad-Prüfung ermittelt. Die ermittelten Anfälligkeitsbereiche wurden miteinander Verglichen und in zwei Sensibilisierungsschaubildern zusammengefasst. T2 - GfKORR-Jahrestagung CY - Frankfurt a. M., Germany DA - 07.11.2017 KW - Duplexstahl KW - Nichtrostender Stahl KW - Wärmebehandlung KW - Korrosion KW - EPR KW - KorroPad KW - Sensibilisierung PY - 2017 AN - OPUS4-42834 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thiel, Erik T1 - Novel thermographic methods for non-destructive testing using structured illumination N2 - Photothermal imaging is commonly used for the characterization of material properties, the determination of layer thicknesses or the detection of inhomogeneities such as voids or cracks. For this purpose, the solid specimen is externally heated, e.g. by using a light source. The resulting transient heat flows interact with the inner structures of the specimen, which in turn is measured as a transient temperature distribution at the surface. Novel array-shaped, high-power laser light sources allow to control the heating of the surface arbitrarily, both temporally and spatially. This enables us to shape the heat flows within the material in a very specific way. In a first application, we demonstrate how to apply destructively interfering thermal wave fields in order to detect subsurface defects with a very high sensitivity. A similar technique, although originating from a very different physical domain, is already in use for medical 3D imaging showing the high potential of this approach. T2 - Adlershofer For­schungs­forum 2017 CY - Berlin, Germany DA - 10.11.2017 KW - Active thermography KW - Photothermal KW - Crack detection KW - Thermal wave KW - Structured heating PY - 2017 AN - OPUS4-42835 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pignatelli, Giuseppe T1 - Effects of nanoparticles on laser ablation N2 - Introduction: Laser Induced Breakdown Spectroscopy (LIBS) is an atomic emission analytical technique, wide spreading in laboratories and industries. One way to dramatically increase its analytical results is to deposit metal NPs on the sample surface, resulting in an better version called Nanoparticle Enhanced LIBS (NELIBS). In order to better know and use this technique, the evolution of the plasma has been studied with Tomography. T2 - CHESS 2017 CY - Florence, Italy DA - 27.11.2017 KW - LIBS KW - Nanoparticles PY - 2017 AN - OPUS4-43476 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kulla, Hannes T1 - In situ PXRD monitoring of a mechanochemical cocrystal formation in milling jars of different material N2 - We present an in situ PXRD investigation of the mechanochemical cocrystal formation of pyrazinamide with pimelic acid in two milling jar materials. In the steel jar a polymorph transformation presenting an exception of Ostwald’s rule of stages is observed. T2 - BESSY User Meeting 2017 CY - Bessy II (HZB), Berlin, Germany DA - 14.12.2017 KW - In situ KW - XRD KW - Polymorph KW - Cocrystal KW - Milling PY - 2017 AN - OPUS4-43502 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kormunda, M. T1 - Study of magnetron sputtering deposited ultrathin FeSnOx films for Surface Plasmon Resonance sensors towards gas sensing applications N2 - In this study, series of coatings with the goal of sensitising gold SPR sensors towards CO, NH4, etc. were prepared. To better understand the mechanism behind the sensitizing effect and to enable the targeted production of optimized layers, the wide range of coatings was studied by multiple methods from spectroscopic ellipsometry for their dielectric function, by XPS for chemical composition and SEM, TEM to determine their microscopic structure. The coatings were deposited at inert Ar gas and reactive Ar/O2 gas mixture by RF magnetron sputtering or DC pulsed magnetron sputtering with settable RF bias on the substrates. The plasma processes were monitors by mass spectrometry. The metal oxide coatings in SPR sensors have to be prepared reproducible with thickness about 5 nm therefore lower deposition rate conditions were advantages. T2 - THE 14th INTERNATIONAL SYMPOSIUM ON SPUTTERING & PLASMA PROCESSES,ISSP 2017 CY - Kanazawa, Japan DA - 05.07.2017 KW - Surface Plasmon Resonance KW - Magnetron sputtering KW - FeSnOx PY - 2017 AN - OPUS4-43536 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Emmerling, Franziska T1 - In situ investigations of mechanochemical reactions - new insights in formation pathways N2 - Mechanochemistry is increasingly used for synthesizing soft matter materials including metal organic compounds and cocrystals. The ever-increasing interest in this method is contrasted by a limited mechanistic understanding of the mechanochemical reactivity and selectivity. Time-resolved in situ investigations of milling reactions provide direct insights in the underlying mechanisms. We recently introduced a setup enabling in situ investigation of mechanochemical reactions using synchrotron XRD combined with Raman spectroscopy. The specific combination allows to study milling processes comprehensively on the level of the molecular and crystalline structure and thus obtaining reliable data for mechanistic studies. In situ Raman spectroscopy coupled with thermography revealed a low temperature increase during milling reactions due to the mechanical impact and clear temperature increases because of the reaction heat. Based on the data, temperature rises as postulated in the magma plasma and hot spot theory can be excluded for soft matter milling syntheses. Our results indicate that in situ investigation of milling reactions offer a new approach to tune and optimize mechanochemically synthesized compounds. T2 - Wissenschaftsforum Chemie CY - Berlin, Germany DA - 10.09.17 KW - Mechanochemistry KW - In situ PY - 2017 AN - OPUS4-43563 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Martin T1 - Wie sicher sind Labortests - Die Bedeutung von Ringversuchen zur Methodenvalidierung am Beispiel der Bestimmung des Selbstentzündungsverhaltens großer Feststoffschüttungen N2 - Für die Klassifizierung sowie die sichere Handhabung und Nutzung von Chemikalien und anderen Stoffen wurden spezielle standardisierte Testmethoden entwickelt, die weltweit zum Einsatz kommen. Die Ableitung von Sicherheitsmaßnahmen durch Experten erfordert, dass aus diesen Untersuchungen verlässliche Daten gewonnen werden. Ringversuche sind ein wesentliches Element bei der Methodenentwicklung (-validierung) und für die Qualitätssicherung von Laboratorien. Die Testmethode DIN EN 15188:2007 dient der Bestimmung des Selbstentzündungsverhaltens von Schüttgütern und Stäuben. Experimentelle Grundlage für die Beschreibung des Selbstentzündungsverhaltens eines bestimmten Materials ist die Bestimmung der Selbstentzündungstemperaturen (TSE) von Proben verschiedener Größen mit Hilfe isoperiboler Warmlagerungsversuche. Die so ermittelten Versuchsdaten ergeben die Abhängigkeit der Selbstentzündungstemperaturen vom Lagervolumen. Zweck einer schrittweise aufgebauten Serie von Ringversuchen und internen Labortests war die Identifizierung von Schwächen der bestehenden Methode bzw. von in der Laborpraxis auftretenden Mängeln bei der Anwendung der Methode, die Validierung der modifizierten und verbesserten Methode sowie die Bestimmung einer allgemeingültigen (Mess-)Unsicherheit dieser modifizierten Methode. T2 - 13. Fachtagung Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen, Germany DA - 16.11.2017 KW - Selbstentzündung KW - Methodenvalidierung KW - Messunsicherheit KW - Ringversuch PY - 2017 AN - OPUS4-43508 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krietsch, Arne T1 - Verlauf der Explosionskenngrößen von Metallstäuben – von Mikro bis Nano N2 - Aufgrund von Erfahrungen mit Stäuben mit Partikelgrößen im Mikrometerbereich ist bekannt, dass Stoffe mit abnehmender Partikelgröße kritischer einzustufen sind, da z.B. maximaler Explosionsdruck (pmax), maximaler zeitlicher Druckanstieg (dp/dtmax) und Zündempfindlichkeit durch die Zunahme der reaktiven Oberfläche des Staubes zunehmen. Eine Übersicht des Verlaufes der Explosionsauswirkungen metallischer Stäube vom Mikrometerbereich bis in den Nanometerbereich konnte bislang nur vereinzelt durch wenige Ergebnisse gegeben werden. Dieser Beitrag präsentiert einen detaillierten Überblick über das Explosionsverhalten von Metallstäuben vom Mikrometer- bis in den Nanometerbereich. Hierfür wurden verschiedene Metallstäube untersucht und deren Explosionsauswirkungen in Abhängigkeit der mittleren Primärteilchengröße entweder durch BET-Messungen, Partikelgrößenverteilung oder REM-Mikroskopie bestimmt. Um den Verlauf des Explosionsverhaltens für diese Metalle darzustellen, wurde einerseits eine umfangreiche Literaturrecherche durchgeführt. Darüber hinaus wurden die im Rahmen deutscher und französischer Forschungsprogramme durchgeführten experimentellen Untersuchungen genutzt, um insbesondere die Datenlage für nanoskalig hergestellte Stäube zu verbessern. Auch bei Metallstäuben im Allgemeinen führt eine Verringerung der Teilchengröße zu einem kritischeren Verhalten der Stäube. Es scheint jedoch, dass diese Aussage nur bis zu einem kritischen Durchmesser gilt, unterhalb dessen die Auswirkungen einer Explosion (pmax, dp/dtmax) für alle betrachteten Stäube wieder abnehmen. Diese kritische Größe kann durch theoretische Überlegungen zur Art der thermischen Übertragung in der Flamme erklärt werden. Der Einfluss der Schlüsselparameter wird in diesem Beitrag ebenfalls diskutiert, um die Mechanismen besser zu verstehen und das Verständnis letztendlich auch auf andere pulverförmige Materialien auszudehnen. T2 - 13. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 16.11.2017 KW - Staubexplosion KW - Brennbare Stäube KW - Metallstäube KW - Nanomaterialien PY - 2017 AN - OPUS4-43510 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seifert, Alexander T1 - Chemsafe – Neues von der Datenbank für Kenngrößen des Explosionsschutzes N2 - Chemsafe wird seit Mai 2017 öffentlich und unentgeltlich über das Internet publiziert, um der Industrie und der Wissenschaft die gezielte Nutzung aktueller und bewerteter Daten zu ermöglichen. Dadurch wird die Datenbank in Normen und Technischen Regeln zitierbar. Die herausgebenden Bundesanstalten folgen so der Hightech-Strategie der Bundesregierung, die den Transfer öffentlich finanzierter, wissenschaftlicher Ergebnisse in Produkte und Dienstleistungen zum Nutzen der Gesellschaft fördert. Der Zugang zu diesen Ergebnissen im Internet soll ohne rechtliche oder technische Hürden und ohne Kosten möglich sein (Open Access). T2 - 13. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen, Germany DA - 16.11.2017 KW - Open Access KW - Chemsafe KW - Datenbank KW - Kenngrößen KW - Explosionsschutz PY - 2017 AN - OPUS4-43511 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kelly, U. A1 - Richter, S. A1 - Schladitz, K. A1 - Scheuerlein, C. T1 - Nb3Sn wire shape and cross sectional area inhomogeneity in Rutherford cables N2 - During Rutherford cable production the wires are plastically deformed and their initially round shape is distorted. Using X-ray absorption tomography we have determined the 3D shape of an unreacted Nb3Sn 11 T dipole Rutherford cable, and of a reacted and impregnated Nb3Sn cable double stack. State-of-theart image processing was applied to correct for tomographic artefacts caused by the large cable aspect ratio, for the segmentation of the individual wires and subelement bundles inside the wires, and for the calculation of the wire cross sectional area and shape variations. The 11 T dipole cable cross section oscillates by 2% with a frequency of 1.24 mm (1/80 of the transposition pitch length of the 40 wire cable). A comparatively stronger cross sectional area variation is observed in the individual wires at the thin edge of the keystoned cable where the wire aspect ratio is largest. T2 - 13th European Conference on Applied Superconductivity, EUCAS 2017 CY - Geneva, Switzerland DA - 17.09.2017 KW - X-ray computer tomography KW - Image processing KW - Superconducting KW - CERN KW - µCT PY - 2017 AN - OPUS4-43493 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völker, Tobias T1 - Application of two calibration-free LIBS techniques N2 - Two calibration-free (CF) LIBS approaches are used for the quantitative analysis of cement samples: the CF-LIBS based on the Boltzmann plot method and the Monte Carlo (MC) LIBS based on the iterative spectrum fitting. In CF-LIBS, the inverse problem is solved, i.e. the elemental concentrations are determined by the reconstruction of plasma parameters from spectra. The MC-LIBS technique solves the direct problem by finding the highest correlation between the model-generated and experimental spectrum. The accuracy of both calibration-free LIBS methods suffers from factors such as inaccurately determined instrumental function, the deviation of experimental plasma from the mathematical model used, not taking into account the collection geometry, and from the uncertainty of spectroscopic data. The both calibration-free LIBS approaches are first applied to synthetic spectra which perfectly suit the mathematical model of the method, i.e. the model of the uniform, isothermal, and stationary plasma. This test yields the accuracy of both the approaches for the ideal case. In addition, the accuracy of both the methods is investigated for non-uniform and non-isothermal plasma, because real laser-induced plasma often has high gradients in temperature and particle number densities. Finally, both calibration-free LIBS approaches are applied to experimental spectra obtained from cement samples. The figures of merits of two approaches are compared when working with both synthetic and experimental spectra. T2 - LIBS 2018 at SciX 2018 CY - Atlanta, GA DA - 21.10.2018 KW - Plasma diagnostics KW - Laser induced plasma KW - LIBS KW - Plasma modeling PY - 2018 AN - OPUS4-46931 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herold, Christian T1 - Project KoBrA - Requirements and concepts for disposal containers for heat-generating radioactive waste and spent fuel in salt, clay and crystalline rock N2 - After restarting the site selection process for a final repository for spent nuclear fuel (SNF) and heat-generating radioactive waste, all areas with one of the three potential host rock formations considered in Germany – salt, clay and crystalline rock – are under review. The project “KoBrA“, run by BGE TECHNOLOGY and BAM, collects and reviews requirements, criteria and proposals for final disposal container concepts complying with the current safety standards, taking into consideration international experience in the field of high-level nuclear waste (HLW) management. T2 - IGD-TP Exchange Forum 8 CY - Berlin, Germany DA - 03.12.2018 KW - Final disposal container KW - Spent fuel KW - HLW KW - Concepts KW - Requirements PY - 2018 UR - https://igdtp.eu/wp-content/uploads/2018/11/EF8-P9-Herold-KoBrA_V1b2.pdf AN - OPUS4-46983 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hüllmann, Dino T1 - Gas Source Localisation from the Next Dimension N2 - Leaking methane (CH4) from infrastructures, like pipelines, industrial complexes and landfills, or accidental hazardous goods transports is critical for the environment, but can also pose a risk to human life. To enable a fast detection and localisation of these kind of leaks, we developed a novel robotic platform for aerial remote gas sensing. The platform combines an unmanned micro aircraft (UAV), a 3-axis aerial stabilisation gimbal and an open-path gas detector based on the tunable diode laser absorption spectroscopy (TDLAS). T2 - PhD Poster Session an der Universität Örebro CY - Örebro, Sweden DA - 27.11.2018 KW - Gas Source Localisation KW - Mobile Robot Olfaction KW - UAV KW - TDLAS KW - Gas Spectroscopy PY - 2018 AN - OPUS4-46869 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Tobias T1 - Boosting of chlorine emission by electric discharge reheating in laser-induced plasma N2 - For the determination of the remaining life-time and the degree of damage of reinforced concrete structures such as marine construction, bridges or parking decks, a highly precise measurement of harmful species is also required for trace elements. One of the most interesting elements is chlorine, because above a certain threshold corrosion is triggered. To increase the intensity of the chlorine line, helium is usually used, which is costly. To overcome this problem, low electrical discharge reheating is used which operates in air atmosphere. A comparison between results obtained by measuring with helium and reheating by electrical discharge is presented. The performance is compared by the resulting calibration curves and the calculated limit of detection obtained by 15 reference samples based on cement with NaCl. Concentrations of reference samples range from 0.05 to 2.5 wt% chlorine. T2 - Xth international conference on Laser-Induced Breakdown Spectroscopy CY - Atlanta, GA, USA DA - 21.10.2018 KW - LIBS KW - Electric discharge KW - Plasma reheating PY - 2018 AN - OPUS4-46792 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gottlieb, Cassian T1 - Temporal evaluation and imaging of laser-induced plasmas on cement-based materials N2 - In civil engineering, the laser-induced breakdown spectroscopy has been applied as a fast and reliable method for a quantitative evaluation of concrete cores. Due to a two-dimensional scanning, the heterogeneity of concrete can be evaluated and elements like Cl, Na, and S are related to the cement matrix only. This study deals with the temporal evaluation and imaging of laser-induced plasmas on cement-based materials, in order to investigate the impact of aggregates with diffrent grain size on the spectral response in LIBS. T2 - Xth international conference on Laser-Induced Breakdown Spectroscopy CY - Atlanta, GA, USA DA - 21.10.2018 KW - LIBS KW - Concrete KW - Grain size PY - 2018 AN - OPUS4-46794 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Haferkamp, Sebastian T1 - In situ investigation of mechanochemical Knoevenagel condensations of benzaldehyde derivates N2 - Mechanochemistry is known for short reaction times, nearly quantitative conversions, and decreasing amount of solvents. Among organic syntheses, the Knoevenagel condensation is an important C-C bond forming reaction. We investigated the reaction of benzaldehyde derivates (nitro- and fluoro-derivates) with malononitrile syntheses by a combination of different in situ investigation techniques. T2 - BESSY II User Meeting CY - Berlin, Germany DA - 05.12.2018 KW - Mechanochemistry KW - In situ PY - 2018 AN - OPUS4-46997 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfretzschner, Beate T1 - Characterization of texture in SLM IN 718 samples using monochromatic neutron radiography N2 - Additive Manufacturing (AM) offers the opportunity to produce easier geometrically complex parts compared to traditional production technologies. An important AM technology for metals is selective laser melting (SLM) where a part is produced by melting and solidifying powder in layers. This technique is known to cause a pronounced texture in the produced AM products due to the specific heat flow and the associated solidification of the material during SLM deposition. In order to evaluate the influence of the deposition hatch length during SLM of nickel based superalloy Inconel 718 samples on the texture and in order to identify any preferred crystallographic direction, we performed monochromatic neutron radiography scans (using wavelength from 1.6 Å to 4.4 Å, step size 0.05 Å) to image the samples while rotating it through 90°. Samples produced with short hatch length showed fine textured columnar grains oriented along the sample building direction in high-resolution radiographs. Whereas processing the sample using a ten-fold longer hatch length reduced the texture. The neutron radiographic experiments were accompanied by scanning electron microscopy including electron back-scattered diffraction to visualize and verify the microstructure and texture. T2 - German Conference for Research with Synchrotron Radiation, Neutrons and Ion Beams at Large Facilities CY - Garching, Germany DA - 17.09.2018 KW - Bragg-edge KW - Neutron KW - Texture KW - Additive manufacturing PY - 2018 AN - OPUS4-47260 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kittner, Maria T1 - Thermoanalytical methods for the optimisation of microplastic analysis in freshwater sediment samples N2 - Results of various thermoanalytical techniques are presented for the analysis of microplastics in sediment samples. The homogeneity and the representativness of samples war controlled, as well as steps of separation and microplastic detection by these techniques. T2 - MICRO CY - Lanzarote, Spain DA - 19.11.2018 KW - Water KW - Microplastics KW - Sampling KW - Sampling techniques PY - 2018 AN - OPUS4-47322 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kratzig, Andreas T1 - Interaction of Reactive Components in CO2 Streams with Transport Pipeline Steel X70 N2 - In context of CLUSTER project, impacts of impurities (SO2, NO2, O2, CO, H2S, H2, N2, Ar and H2O) in CO2 streams captured from different sources in a regional cluster on transport, injection and storage were investigated. Corrosion studies of oxidizing, reductive or mixed atmospheres towards transport pipeline steel X70 were carried out applying high pressure (10 MPa) at low temperatures (278 K or 313 K). T2 - GHGT-14 Conference CY - Melbourne, Australia DA - 22.10.2018 KW - Carbon capture KW - CCS KW - Carbon dioxide KW - Corrosion PY - 2018 AN - OPUS4-47017 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rütters, H. T1 - Combining CO2 Streams from Different Emitters – A Challenge For Transport And Storage Infrastructure N2 - The European Directive 2009/31/EC on the geological storage of CO2 envisages an open access of CO2 streams from different emitters to a nation- or even EUwide CO2 pipeline network if CO2 stream compositions meet “reasonable minimum composition thresholds”. As of today it is not known how such “composition thresholds” may be defined and which impurity levels may be viable in practical application. To set up recommendations for criteria and respective threshold values for CO2 stream compositions, the project “CLUSTER” will investigate how a dynamic interplay – both in terms of mass fluxes and compositions – of CO2 streams from regionally clustered CO2 sources sharing a transport and storage infrastructure will impact corrosion, e.g., of pipelines and plant components, and geochemical alteration of cap rocks and reservoir rocks. In addition, the behaviour of such a highly dynamic CCS system will be considered for an overall optimization of system design including CO2 stream mixing schemes and facilities or interim CO2 storage. T2 - TCCS-8 – The 8th Trondheim Conference on CO2 Capture, Transport and Storage CY - Trondheim, Norway DA - 16.06.2015 KW - Carbon capture KW - Carbon dioxide KW - Corrosion KW - CCS PY - 2015 AN - OPUS4-47018 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sommer, Konstantin T1 - Microstructure characterization of additive produced parts N2 - Due to the advantages of additive manufacturing (AM), it has been increasingly integrated into many industrial sectors. The application of AM materials for safety-critical parts requires the detailed knowledge about their microstructure stability under thermo-mechanical or mechanical load and knowledge on ageing process mechanisms. Ageing processes are characterized by change of the material microstructure that is to be initially investigated. This work deals with the Investigation of 316L stainless steel manufactured by selective laser melting (SLM). Describing Parameters must be defined and applied on the microstructure of these materials in their initial state and after loads were applied. The findings of this work form the basis for the investigation of AM material ageing. T2 - FEMS Junior EUROMAT 2018 CY - Budapest, Hungary DA - 08.07.2018 KW - Additive manufacturing KW - Selective laser melting KW - 316L KW - Material characterization KW - Microstructure PY - 2018 AN - OPUS4-47176 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kjaervik, Marit T1 - Surface characterisation of bacteria and biofilms by NAP-XPS N2 - INTRODUCTION: X-ray photoelectron spectroscopy (XPS) provides elemental and chemical information from the outermost ~10 nm of the sample surface. This is in the same order of magnitude as the thickness of the outer bacterial membrane of gram-negative bacteria, as well as outer membrane molecules as exopolysaccharides and lipopolysaccharides, commonly attached to the cell surface. With the development of near-ambient pressure (NAP)-XPS, bacteria can be analysed with minimal sample preparation. This is in contrast to ultra-high vacuum XPS, where complex sample preparation including freeze-drying or fast-freezing is required, a treatment that may introduce artefacts or degrade the biological constituents. METHODS: EnviroESCA is a laboratory based NAP-XPS instrument, equipped with a monochromated Al Kα radiation source and a differentially pumped energy analyser connected to an exchangeable sample environment, a basic build-up is displayed in Figure 1c. It allows for measurements in various gas-atmospheres, including water vapor, which makes it possible to characterise bacteria and other biological samples close to their natural, hydrated state. Artificial model-biofilms of exopolysaccharides, planktonic Pseudomonas Fluorescens and biofilms of Escherichia Coli have been characterised in hydrated and dried state. RESULTS: High-resolution XPS-spectra from carbon, oxygen, nitrogen and phosphorous can be assigned to carbohydrates, lipids and proteins in general agreement with litterature2,3. Especially the carbon 1s peak is of interest (see Figure 1a and b), which reveal components originating from aliphatic carbon, single bounded carbon and double bounded/acetal carbon. A series of measurements of an E. coli biofilm from 11 mbar in humid environment to 1 mbar air reveal changes in the C1s peak, which suggests that the bacterial surface undergo substantial change. DISCUSSION & CONCLUSIONS: Bacterial samples can be analysed under near-ambient pressure conditions in various states of hydration with minimal sample preparation. Such investigations of bacterial cell wall surfaces are essential for studying biological interfaces at work. T2 - Biointerfaces International Conference CY - Zurich, Switzerland DA - 14.08.2018 KW - Bacteria KW - E. coli KW - NAP-XPS KW - Biofilms KW - Alginate PY - 2018 AN - OPUS4-45717 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kiefer, P. T1 - Statistical analysis of Vickers induced subcritical crack growth in soda-lime silicate glasses N2 - Studies on Vickers induced subcritical crack growth are controversially discussed since the stresses that drive the crack growth are distributed three dimensionally within the material and cannot be retraced by available methods. Hence, empirical approaches are used to calculate mechanical material parameters such as the stress intensity factor KI. However, the results of these approaches show large deviations from those measured by standardized techniques such as double cantilever beam (DCB) or double cleavage drilled compression (DCDC). Yet, small specimen sizes and low specimen quantities can prevent the execution of DCB and DCDC measurements. Here we present an approach that is based on a statistical analysis of Vickers induced radial cracks. For this purpose more than 150 single radial cracks were analyzed. The cracks were generated in a commercial soda-lime silicate glass. The experiments were performed in a glovebox purged with dry nitrogen gas to minimize the influence of atmospheric water on crack growth. The temporally resolved evolution of the radial cracks was monitored in-situ using an inverted microscope equipped with a camera system directly below the Vickers indenter. An automated image analysis software was used to determine the crack length over time. The data show that the crack propagation and thereby the crack velocities are not uniformly but statistically distributed. These findings allow, using the statistical mean value of the distributions in combination with DCB data, a precise formulation of KI for each measured crack length. T2 - 92nd Annual Meeting of the German Society of Glass Technology in Conjunction with the Annual Meetings of the Czech Glass Society & the Slovak Glass Society CY - Bayreuth, Germany DA - 28.05.2018 KW - Crack growth KW - Soda-lime silicate glass KW - Vickers PY - 2018 AN - OPUS4-45703 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koclęga, Damian A1 - Radziszewska, A. A1 - Kranzmann, Axel A1 - Dymek, S. T1 - Microstructure characterization of the Inconel 686 clad layer after high-temperature corrosion tests in aggressive gases and ashes N2 - The Ni-Cr-Mo-W alloy is characterized by the excellent high-temperature corrosion resistance, good strength and ability to work in aggressive environments. To protect the surface of the substrate 13CrMo4-5 steel against aggressive environments the Inconel 686 as clad layer was used. The corrosion process was performed in oxidizing mixture of gases like O2, COx, SOx. The second part of corrosion Experiment concerned the corrosion test of the coating in reducing atmosphere of the specified gases with ashes, which contained e.g. Na, Cl, Ca, Si, C, Fe, Al. T2 - Junior EUROMAT 2018 CY - Budapest, Hungary DA - 08.07.2018 KW - Laser Cladding KW - Inconel 686 KW - High temperature corrosion KW - Aggressive environement KW - Material oxidation PY - 2018 AN - OPUS4-45627 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Even, Morgane T1 - Investigations on emission properties of VOCs from consumer products made of polymers N2 - There is a need for an assessment of the emission properties of volatile organic compounds (VOCs) from consumer products. A method comparison was carried out to evaluate adapted and cost-effective procedures for such items. Smaller and automated emission chambers de-picted similar kinetics compared to a 203 L standard chamber. Toy samples made of PVC (Polyvinyl chloride) emitted more VOCs compared to other tested polymeric products. The emissions from 2 selected samples were studied to allow an evaluation of the resulting room concentration and external exposure of a child. Obtained concentrations were not of concern. T2 - Conference on Indoor Air 2018 CY - Philadelphia, USA DA - 22.07.2018 KW - Emission chamber testing KW - Volatile organic compounds KW - Consumer articles PY - 2018 AN - OPUS4-45662 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ickert, Stefanie T1 - Vacuum ultraviolet light as a new Tandem MS method N2 - Tandem MS techniques are widely used for both, structure and sequence elucidation of biopolymers. Thereby, fragmentation activation is realized by various methods, for example with lasers or collisions with neutral gases. In this study, we present a new Tandem MS System using a commercially available vacuum ultraviolet lamp. On the one hand, this approach provides efficient fragmentation in both ionization modes, positive as well as negative. On the other hand, it enables an additional previously not achieved post ionization of the fragments. While the first results in atypical fragment patterns and, thus provides orthogonal information, the second is crucial especially to identify low abundant ions. T2 - EMSC 2018 CY - Saarbruecken, Germany DA - 4.3.2018 KW - Tandem MS PY - 2018 AN - OPUS4-45671 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kauss, N. A1 - Heyn, A. A1 - Rosemann, Paul T1 - How to Detect Sensitivity on Aged Lean-Duplex Stainless Steel With Electrochemical Methods N2 - The influence of isothermal ageing on microstructure, sensitisation and pitting corrosion resistance of the lean duplex stainless steel (LDSS) X2CrNiN23-4 was investigated with various electrochemical methods. The aging at 600 °C (from 0.1 h up to 20 h) lead to the formation of precipitations at the ferrite-ferrite (α/α) and ferrite-austenite (α/γ) grain boundaries, inducing sensitisation due to chromium depletion. The degree of sensitisation was evaluated with the double loop electrochemical potentiokinetic reactivation method (DL-EPR) according to ASTM G108 and correlated with critical pitting potentials (Epit) as well as critical pitting temperature (CPT) measured in an electrolyte according to ASTM G48 using electrochemical noise. Up to an ageing time of 1 h, the sensitisation did rise significantly, stabilising at a nearly constant level with a slight drop at 20 h. This behaviour correlated perfectly with the potentiodynamically determined pitting potentials Epit and sensitisation. The CPT showed a higher sensitivity at short ageing times compared to the DL-EPR and Epit. Finally, the KorroPad method was applied to visualise the sensitisation induced reduction of pitting corrosion resistance. The “KorroPad” is an agar-based gel-electrolyte containing 0.1 mol/l sodium chloride (NaCl) and 0.1 mol/l potassium ferricyanide III (K3[Fe(CN)6]), invented at the Federal Institute of Materials Research and Testing in Berlin (Germany) to detect surfaces of stainless steel prone to pitting corrosion. The standard configuration of the KorroPad showed no differentiation for the various aging conditions. Increasing the concentration of both NaCl and potassium ferrocyanide III to 0.5 M shifts the detection limit of the KorroPad method to stainless steels with higher corrosion resistance, producing the same trends detected by standard electrochemical pitting corrosion values (Epit, CPT) and sensitisation (DL-EPR). By that, the KorroPad method was successfully adjusted to the lean-duplex stainless steel X2CrNiN23-4, enabling short-time testing to detect sensitization. T2 - Electrochemical Methods in Corrosion Research 2018 CY - Cambridge, UK DA - 22.07.2018 KW - Corrosion testing KW - Duplex stainless steels KW - Corrosion KW - KorroPad KW - Pitting corrosion KW - EPR KW - Electrochemical noise KW - Stainless steel PY - 2018 AN - OPUS4-45615 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf T1 - Comparison of Formaldehyde Concentrations in Emission Test Chambers Using EN 717-1 and EN 16516 N2 - For many years EN 717-1 (Wood-based panels - Determination of formaldehyde release - Part 1: Formaldehyde emission by the chamber method) is the standard for formaldehyde emission testing of wooden boards. In 2017 EN 16516 (Construction products - Assessment of release of dangerous substances - Determination of emissions into indoor air) was published as a new harmonised standard for the emission testing of construction products. Because test chamber conditions are different, both standards give different concentrations for formaldehyde. For the determination of a conversion factor four test series were set up with different wooden boards. T2 - Conference on Indoor Air CY - Philadelphia, PA, USA DA - 22.07.2018 KW - Loading factor KW - Construction products KW - European standard KW - Air exchange rate PY - 2018 AN - OPUS4-45631 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friese, Carmen T1 - AEROMET: Aerosol metrology for atmospheric science and air quality N2 - Air pollution is the leading cause of environmentally related health effects. This project aims at improving air quality monitoring in Europe. T2 - 4th German Staubtag CY - Bremen, Germany DA - 21.11.2017 KW - Aerosol KW - Monitoring KW - Air quality KW - Composition KW - Particle mass PY - 2017 AN - OPUS4-46322 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schwibbert, Karin A1 - Menzel, Friederike T1 - Bacterial Adhesion on Different Materials N2 - Biofilm formation on materials leads to high costs in industrial processes, as well as in medical applications. This fact has stimulated interest in the development of new materials with improved surfaces to reduce bacterial adhesion. We present a flow chamber system to test and quantify bacterial adhesion on materials that are part of antifouling concepts. The adhesion process is standardized and can be adapted to different bacteria in subaquatic of subaerial environments. It is combined with a standardized evaluation procedure based on statistical evidence. T2 - AMiCI Workshop Berlin CY - BAM Berlin, Germany DA - 07.06.2018 KW - Bacterial adhesion KW - Flow chamber system KW - Biofilm formation KW - Standardized test and quantification procedure PY - 2018 AN - OPUS4-46374 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liehr, Sascha T1 - Wavelength-modulated C-OTDR techniques for distributed dynamic measurement N2 - We present two wavelength-modulated coherent optical time domain reflectometry techniques for dynamic, quantitative and distributed measurement. The robust and simple techniques are based on backscattering correlations along the time axis and along the pulse wavelength shift axis. T2 - 26th International Conference on Optical Fibre Sensors OFS-26 CY - Lausanne, Swiss DA - 24.09.2018 KW - Fiber optics sensors KW - Optical time domain reflectometry KW - Rayleigh scattering KW - Distributed strain sensor KW - Distributed vibration sensor KW - DAS PY - 2018 AN - OPUS4-46392 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Simon, Katja T1 - Fachinformationssystem Datenbank GEFAHRGUT - Jetzt auch Hilfe bei der Kennzeichnung der Umweltgefahr N2 - Um Gefahrgutumschließungen richtig kennzeichnen zu können ist es erforderlich zu wissen, ob ein Stoff umweltgefährdende Eigenschaften hat. Als Informationsquelle hierfür kann sowohl die Rechercheanwendung der Datenbank GEFAHRGUT als auch die Daten des Gefahrgutdatenservices im BAM-Nummern-System als auch im UN-Nummern-Systems verwendet werden. T2 - 20. Stuttgarter Gefahrguttag CY - Stuttgart, Germany DA - 18.10.2018 KW - Datenbank KW - Fachinformationssystem KW - Gefahrgut KW - Kennzeichnung KW - Umweltgefahr KW - Umweltgefährdend KW - Environmentally Hazardous KW - Dangerous Goods KW - Database KW - Specialised Information System KW - Transport of Dangerous Goods PY - 2018 AN - OPUS4-46344 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Simon, Katja T1 - Fachinformationssytem Datenbank GEFAHRGUT - Recherche für nicht-radioaktive Stoffe N2 - Präsentation der Möglichkeiten und Themen der Recherche in der Datenbank GEFAHRGUT T2 - 20. Stuttgarter Gefahrguttag CY - Stuttgart, Germany DA - 18.10.2018 KW - Datenbank KW - Fachinformationssystem KW - Gefahrgut KW - Recherche KW - Specialised Information System KW - Dangerous Goods KW - Database PY - 2018 AN - OPUS4-46345 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosemann, Paul A1 - Kauss, N. A1 - Müller, C. A1 - Halle, T. T1 - Heat treatment and corrosion resistance of cutlery N2 - Hardness and pitting corrosion resistance are the major quality criteria of cutlery. Both are achieved by the heat treatment (austenitization, quenching and tempering) of the normally used martensitic stainless steels. The established quality control method regarding the pitting corrosion resistance is an alternating immersion test in 1 % NaCl solution at 60 °C according to DIN EN ISO 8442. This standard test shows a high deviation, which limits any optimization of the heat treatment process. New approaches for corrosion testing of martensitic stainless-steels were developed and used in the last years to connect the weak pitting corrosion resistance of martensitic stainless-steels with the phenomenon of chromium depletion. The tempering temperatures used in the industrial heat treatment of cutlery are too low to explain the appearance of chromium depletion. For this reason, a systematic investigation of three heat treatment parameters (austenitization time, cooling speed and tempering temperature) were performed on the martensitic stainless-steels X50CrMoV15 (1.4116) to detect their contribution to chromium depletion. The electrochemical potentiodynamic reactivation (EPR), which is very sensitive to any change of the microstructure, was used to quantify the degree of chromium depletion. The KorroPad indicator-test was applied to correlate low pitting corrosion resistance to the presence of chromium depletion. The results of all investigations allow conclusions about the very small process window, which is necessary to achieve cutlery with high pitting corrosion resistance. T2 - EUROCORR 2018 CY - Krakow, Poland DA - 09.09.2018 KW - Corrosion KW - KorroPad KW - Stainless steel KW - Corrosion resistance KW - Heat treatment KW - EPR KW - Pitting corrosion KW - Martensitic stainless steels KW - REM PY - 2018 AN - OPUS4-45952 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosemann, Paul A1 - Kauss, N. T1 - Visualization of material-related susceptibility to pitting corrosion with the “KorroPad” indicator test N2 - The KorroPad indicator test was invented at the Federal Institute for Materials Research and Testing to detect stainless-steel surfaces susceptible to pitting corrosion. The KorroPad indicator test is thus an interesting alternative for manufacturers, processors, users and researchers to time consuming exposition experiments and complex electrochemical investigations, which are normally used to reveal surface-related processing errors resulting in reduced pitting corrosion resistance. Furthermore, the KorroPad indicator test can be used to visualize alloy- and microstructure-related factors causing susceptibility to pitting corrosion. The detection limit of the KorroPad indicator test was characterized in this work using reference alloys with different chromium content (5 % to 18 %). The alloy-specific detection limit was shifted successfully to higher chromium content by increasing the concentrations of NaCl and K3[Fe(CN)6]. The modified KorroPads can now be used to establish an alloy-specific quality control regarding the pitting corrosion resistance of different stainless steel grades. T2 - EUROCORR CY - Krakow, Poland DA - 09.09.2018 KW - Corrosion KW - KorroPad KW - Stainless steel KW - Corrosion resistance KW - Corrosion testing KW - Pitting corrosion PY - 2018 AN - OPUS4-45953 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosemann, Paul A1 - Müller, C. A1 - Roßberg, S. A1 - Pensel, P. A1 - Halle, T. A1 - Burkert, A. T1 - Precipitation behavior and corrosion resistance of nickel-free, high-nitrogen austenitic stainless steels N2 - Nickel-free, nitrogen alloyed austenitic stainless-steels, with about 19 wt.-% Mn and 0,8 wt. % N, are an interesting alternative to classic CrNi austenitic stainless steels due to their superior mechanical properties (Rm > 900 MPa, A5 > 50 %, Av > 350 J) in the solution annealed condition. The formation of chromium-rich nitrides during suboptimal heat treatment, processing or application leads to an inhomogeneous distribution of alloying elements in the microstructure, which reduces the corrosion resistance. Consequently, an accurate knowledge of the sensitization behavior is indispensable for the use of nickel-free, high-nitrogen austenitic stainless steels. The relationship between artificial aging, phase formation and corrosion resistance was investigated on the alloys X8CrMnN18-19 (1.3815) and X8CrMnMoN18-19-2 (1.4456), both alloyed with 0,8 wt.-% Nitrogen, in the present work. The microstructural evolution was studied by LM and SEM while the corrosion resistance was characterized with the electrochemical potentiodynamic reactivation (EPR) and the KorroPad indicator-test. Both alloys showed increased corrosion susceptibility within critical aging parameters. Finally, a sensitization diagram was described successfully for both alloys showing the positive effect of molybdenum. T2 - EUROCORR 2018 CY - Krakow, Poland DA - 09.09.2018 KW - Corrosion KW - KorroPad KW - Stainless steel KW - Corrosion resistance KW - Heat treatment KW - ThermoCalc KW - Pitting corrosion KW - Nitrogen PY - 2018 AN - OPUS4-45954 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kauss, N. A1 - Rosemann, Paul A1 - Halle, T. T1 - Age-hardening behaviour, microstructure and corrosion resistance of the copper alloyed stainless steel 1.4542 N2 - The copper alloyed stainless steel 1.4542 (X5CrNiCuNb16-4) is used in different areas due to its good mechanical properties and corrosion resistance. Strength and corrosion re-sistance can be adjusted by the heat treatment, which is of importance for the application of this alloy. The mechanical properties (strength and hardness) are attributed to the dispersive precipitation of the copper rich ε–Phase. The additional precipitation of chromium carbides can reduce the corrosion resistance. Different ageing states were produced to investigate the precipitation behaviour with various methods. Furthermore, the influence of cold-rolling on the precipitation behaviour was studied in comparison to a solution annealed state without deformation. The microstructure was studied by SEM and the variations of hardness and magnetic proportion were characterised. The electrochemical potentiodynamic reactivation (EPR) was used to determine the corrosion resistance and detect chromium depletion in all heat-treated states. The results show that a work hardening accelerates the precipitation rate, while ageing at 600 °C reduces the corrosion re-sistance due to chromium depletion. T2 - EUROCORR 2018 CY - Krakow, Poland DA - 09.09.2018 KW - Corrosion KW - Stainless steel KW - Corrosion resistance KW - EPR KW - Corrosion testing KW - Heat treatment KW - ThermoCalc KW - REM KW - Martensitic stainless steels PY - 2018 AN - OPUS4-45955 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schartel, Bernhard T1 - The Role of Decomposition Temperature for Flame Redartancy Mode of Action in the Condensed Phase N2 - Condensed-phase mechanisms play a major role in fire-retardant polymers. Generations of development have followed the concept of charring to improve fire properties. Whereas the principal reactions are believed to be known, the specific description for multicomponent systems is lacking, as is the picture across different systems. One important aspect in achieving, adjusting and optimising flame retardancy in the condensed phase is exploiting chemical reactions between the pyrolysing polymer and flame retardant at the right place, time and temperature. It is the aim of this contribution to address the role of the decomposition temperature of both flame retardant and polymer by the means of two examples: First, aryl phosphates in Polycarbonate/ Acrylonitrile-Butadiene-Styrene (PC/ABS) blends, where the reaction with the early stage decomposition products of PC is controlling the flame retardancy mechanism in the condensed phase. Second, a comprehensive set of phosphorus flame retardants in thermosets and their corresponding carbon fibre reinforced composites based on two different epoxy systems. Both examples show that key reactions between intermediate decomposition products only occur when the decomposition temperature ranges correspond to each other. The systems can be shifted towards condensed phase activity such as charring or inorganic glass formation as well as towards phosphorus release and thus flame inhibition in the gas phase. Changing the role of flame retardancy mechanisms also influence the efficiency in the achieved flame retardancy. T2 - 10th International Conference on Modification, Degradation and Stabilization of Polymers, MoDeSt2018 CY - Tokyo, Japan DA - 02.09.2018 KW - Acrylphosphate KW - Flame retardant mode of action KW - Mechanism KW - Phosphorus PY - 2018 AN - OPUS4-45966 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yildirim, Arda T1 - Collective Orientational Order and Phase Behavior of a Discotic Liquid Crystal under Confinement N2 - Discotic liquid crystals (DLCs) are a promising class of soft matter for electronic applications. This is due to their ability to self-organize into columns in a hexagonal columnar mesophase, driven by the overlapping of the π orbitals of their aromatic cores. This leads to a high charge-carrier mobility along the column axis. Embedding liquid crystals into nanopores of anodic aluminum oxide (AAO) results in a 2D nanoconfinement of these materials. This confinement affects their properties, compared to the bulk, such as phase transition temperatures and enthalpies, molecular mobility, and crystallization. In this study, 2,3,6,7,10,11 hexakis[hexyloxy] triphenylene (HAT6) was confined into parallel aligned cylindrical nanopores of AAO membranes by melt infiltration. The membrane as confining hosts used have varying pore diameters, from 10 nm to 160 nm, covering a broad pore size range, thus, a better understanding of the confinement effect on phase behavior and molecular configuration in the pores. Furthermore, it is aimed to obtain axial ordering or to increase degree of axial ordering by chemically modifying the surfaces of the pores. Therefore, the pore surfaces the membranes were chemically modified, resulting in a more hydrophobic pore surface than the unmodified ones. The phase behavior was explored by a power-compensated DSC allowing the detecting of small changes in the phase behavior. In the literature, dielectric spectroscopy was demonstrated as a method to monitor molecular order inside the pores. Here, we also investigate the collective orientational order, corresponding to dominating molecular ordering, by dielectric spectroscopy. T2 - 10th Conference on Broadband Dielectric Spectroscopy and its Applications CY - Brussles, Belgium DA - 26.08.2018 KW - Confined Columnar Liquid Crystals PY - 2018 AN - OPUS4-45916 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Szymoniak, Paulina T1 - Molecular dynamics of an asymmetric PVME/PS Blend investigated by broadband dielectric and specific heat spectroscopy N2 - Over the past decades research on the molecular dynamics of miscible polymer blends are of topical interest in the literature, in an attempt to understand the segmental mobilty of individual components, as it is affected by blending. In general, miscible polymer blends exhibit a complex behavior of the molecular mobility. For an A/B blend the relaxation times of component A and component B are affected by the spatial local compositional heterogeneity, present in binary systems on a microscopic level, regardless of the macroscopic homogeneity. Here, a combination of broadband dielectric and specific heat spectroscopy was employed to study the dynamically asymmetric PVME/PS blend with seven different compositions, focusing on samples with high PS contents. Considering that PS is dielectrically invisible, BDS is a powerful technique to study the response of PVME, as it is affected by PS segments. In this work the well-known binary relaxation times distribution of PVME in a blend, originating from the spatial local heterogeneity, was studied over ten decades in frequency, for the first time in literature. Secondly, one of the detected processes, α’-relaxation, shows a crossover from high-temperature behavior (system in equilibrium) towards a low temperature regime, where PS undergoes the thermal glass transition, resulting in confined segmental dynamics of PVME within a frozen network of PS. Here, we introduce a precise mathematical tool to distinguish between the temperature dependency regimes of the process, and examine the composition dependence of the crossover temperature, detected by dielectric spectroscopy. Moreover, the dielectric data was compared in detail with results obtained by specific heat spectroscopy. This comparison provides new insights in the dynamics and dynamic heterogeneity of the PVME/PS blend system. T2 - 10th Conference on Broadband Dielectric Spectroscopy and its Applications CY - Brussels, Belgium DA - 26.08.2018 KW - Polymer blends KW - Dielectric spectroscopy KW - Specific heat spectroscopy PY - 2018 AN - OPUS4-45917 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yildirim, Arda T1 - Molecular dynamics of dipole functionalized triphenylene-based discotics N2 - Since discovery of discotic liquid crystals (DLCs), consisting of a disklike rigid aromatic core and flexible alkyl chains attached to the core, dating back to Chandrasekhar’s work in 1977, they have been extensively investigated to reveal their fundamental properties and potential for applications. The researches on DLCs in last decades showed that DLCs can be considered as promising materials for organic electronic applications since they exhibit one dimensional high charge mobility along the column axis in a columnar mesophase. The mobilies of the rigid aromatic core and the flexible alkyl chains can influence their application properites, e.g. the charge carrier mobility, therefore, it needs to be explored in detailed. In this study, a series of dipole functionalized triphenylene-based discotics, forming a columnar mesophase, were investigated to reveal the influence of the functionalization on phase behavior, molecular dynamics and as well as conductivity. The molecular mobility of the discotics was probed by broadband dielectric spectroscopy (BDS). In addition to conductivity and localized dynamics, glassy dynamics were also observed. The phase behavior of the material was explored by a power-compansated differential scanning calorimetry (DSC). Beside the phase transition temperatures and enthalpies, thermal glass transitions were found for all the materials. Moreover, the glassy dynamics were further investigated by Flash DSC, which is a chip-based calorimetry technique allows fast heating and cooling rates as high as 10000K/s. T2 - 10th Conference on Broadband Dielectric Spectroscopy and its Applications CY - Brussles, Belgium DA - 26.08.2018 KW - Columnar liquid crystals PY - 2018 AN - OPUS4-45918 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Szymoniak, Paulina T1 - Dynamics of nanoscopically confined PVME in thin films of an asymmetric miscible PVME/PS blend N2 - In recent years, substantial efforts have been devoted to investigating nanoscopic confinement of polymers, and its effect on glassy dynamics. Broadband Dielectric Spectroscopy (BDS) was used to study the dynamics of ultra-thin films of PVME/PS 50/50 wt% blend, employing a novel nano-structured capacitor sample arrangement. The investigated system shows a complex dynamic behavior. First, an α-relaxation, related to a bulk-like layer was found. Second, an α’-relaxation was observed, characteristic for dynamically asymmetric blends, where the out of equilibrium dynamics is attributed to weakly-cooperative PVME segments relaxing within a frozen environment of PS segments. Third, for thinnest films, an Arrhenius-like process was dominant in the dielectric spectra, indicating localized fluctuations of the segments. Relaxation rates of this process resembled that of the degenerated α-relaxation of the adsorbed layer, found for pure PVME [1], thus it was assigned accordingly. For thinnest films, this process undergoes a further confinement, due to the topological constraints, introduced by PS. Such multiple confinement effect has not been reported for ultra-thin films of polymer blends, before this study [2]. [1] Madkour, S. et al. ACS Appl. Mater. Interfaces 2017, 9, 7535. [2] Madkour, S. et al. ACS Appl. Mater. Interfaces 2017, 9, 37289. T2 - 10th Conference on Broadband Dielectric Spectroscopy and its Applications CY - Brussels, Belgium DA - 26.08.2018 KW - Polymer blends KW - Thin polymer films KW - Dielectric spectroscopy KW - Specific heat spectroscopy PY - 2018 AN - OPUS4-45919 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Investigations on the degree of damage of polyethylene grades as materials of heating oil storage tanks after a service life of more than 30 years N2 - Tanks for heating oil made of polyethylene grades have been on the market since the early 1970s in Germany. Tank manufacturers recommend the replacement of the tanks after a period of 30 years due to guarantee safety. Polyethylene grades are subject to ageing by alteration of the properties during their life cycle. The degree of ageing and the nature of the degradation process mainly depend on the chemical degradation of the polyethylene, the wall thickness of the tank and the environmental conditions. There are no results available on the long-term behavior of the polyethylene grades, especially after a service life of more than 30 years. The aim of this investigation was the determination of the factual degree of damage in comparison to the uncontaminated polyethylene grades. Material data of the used polyethylene grades are available because the BAM was the competent authority for the tests and expert reports for the approval of these tanks until the middle of the 1990s. The determination of the Melt Flow Rate (MFR) and the Fourier Transmission IR Spectroscopy (FTIR) of tank sections from the bottom, the shell and the roof of 10 segregated heating oil storage tanks produced of polyethylene grades A and B were used as tests methods. The MFR measurements of the tank sections showed differences in the values depending on the weight which was used (5 kg or 21.6 kg). A reduction of the MFR values was measured for most of the sections of tanks made of polyethylene grade B after a service life of the tanks of more than 30 years. This grade is mainly subject to the internal ageing by cross-linkages, increased degree of branched molecules and loss of the plasticizer, and to a lesser extent by oxidative degradation. The FTIR analysis, especially of tank sections of the bottom and the shell showed that the intensity of the CH2 asymmetric and symmetric stretching vibrations in the range: 2800 - 2900 cm-1 and the CH2 bending deformation vibration at 1400 cm-1 increased due chain scissions. The intensity of the carbonyl stretching vibration C=O at 1740 cm-1 is low. The carbonyl index characterizes the degree of oxidation. T2 - EUROCORR 2018 CY - Krakow, Poland DA - 09.09.2018 KW - Heating oil storage tanks KW - Polyethylene KW - Degree of damage KW - Melt Flow Rate (MFR) KW - FTIR PY - 2018 AN - OPUS4-45939 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bente, Klaas T1 - The thermoacoustic effect and its application in air-coupled testing of composite structures N2 - Airborne ultrasonic testing of lightweight, structured composite materials enables fast and contact-free non-destructive testing in aerospace and avoids material degradation due to contact with a coupling liquid. Established resonant air-coupled transducers consist of piezocomposite materials and several matching layers or more advanced materials like charged cellular polypropylene. The relaxation time and the specific frequency of such mechanical ultrasound emitters limit the spectrum of applications for each device. A short pulse length is key for reliable defect detection and each component at test can be best characterized at material- and geometry-specific frequencies. Here we show that focused thermoacoustic transducers are suited for testing lightweight, structured composite plates. Since the ultrasound is generated in air, these transducers show no resonance behavior and emit a broadband acoustic spectrum between 1.2 kHz and 1 MHz. Composite specimens of 3 mm to 9 mm thickness made of polylactide with a honeycomb structure were tested. Flat bottom holes were introduced to quantify the spatial resolution of the imaging method inside the strongly anisotropic specimen. As no broadband receivers are available yet, cellular polypropylene transducers were used as receivers, which limits the bandwidth of the method towards the bandwidth of the receiver. Nevertheless, we demonstrate the competitiveness of the thermoacoustic transducer compared to mechanical emitters at their respective resonance frequencies. Because a thermoacoustic transmitter features a nearly ideal pulse width, a single transmitter can be coupled with receivers with different resonance frequencies. With the development of broadband ultrasound receivers, air-coupled ultrasound spectroscopy will likely be possible in the near future. The analyzed transducer holds the potential to speed up testing during production and maintenance in aerospace and automotives. Its combination with a broadband receiver could also expand the application field of air-coupled ultrasonic testing from a qualitative error detection towards a quantitative, spatially resolved analysis of mechanical material properties. T2 - 10th International Symposium on NDT in Aerospace CY - Dresden, Germany DA - 24.10.2018 KW - Thermoacoustics KW - Ultrasonic Testing KW - Broadband KW - Ultrasound Emission PY - 2018 AN - OPUS4-46466 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gründer, Klaus-Peter T1 - 3D-Verschiebungsmessung in großem Messvolumen N2 - Kameragestützte 3D-Verformungsmessung an einem 24 m langen Brückendemonstrator. Bestimmung der lastabhängigen, mittig gestützten Biegelinie als Vektorverschiebungsfeld. T2 - Tag der offenen Tür CY - BAM TTS, Horstwalde, Germany DA - 29.09.2018 KW - Brückendemonstrator KW - 3D-Verformungsmessung KW - Koordinatenmessung KW - Verschiebungsfeld PY - 2018 AN - OPUS4-46499 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jemian, P. T1 - NXcanSAS: standard to store reduced SAS data of any dimension N2 - A SAS-specific extension of the NeXus file standard has been put together for the community to interchangably store measurement data, accompanied by all possible metadata. T2 - XVII International Small Angle Scattering Conference - SAS2018 CY - Traverse City, Michigan, USA DA - 07.10.2018 KW - Small-angle scattering KW - Data standard KW - NeXus KW - Archival format KW - Quality PY - 2018 AN - OPUS4-46521 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dittmann, Daniel T1 - Wasseranalytik oberhalb des Siedepunktes N2 - Das Poster fasst die Möglichkeiten gekoppelter thermischer Analyseverfahren mit Zersetzungsgasanalyse (TGA, TGA-FTIR, TGA-MS, TED-GC-MS) zusammen und stellt ihre Anwendungen für Wasserproben an ausgewählten Beispielen vor. T2 - 3. Mülheimer Wasseranalytisches Seminar (MWAS2018) CY - Mülheim an der Ruhr, Germany DA - 12.09.2018 KW - Thermogravimetrie KW - Zersetzungsgasanalyse KW - Wasseranalytik PY - 2018 AN - OPUS4-46508 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hüllmann, Dino A1 - Neumann, Patrick P. A1 - Bartholmai, Matthias T1 - Wind Vector Estimation on Multirotor Aircraft N2 - Small unmanned aircraft (UA) are used increasingly as flying sensor platforms. Amongst other things they are used for environmental monitoring, for example gas distribution mapping. Sometimes, these applications require knowledge of the ambient wind field, which can be measured by additional devices like anemometers. In general, it would be interesting to avoid such additional apparatuses. One way to achieve this is to estimate the wind vector, that is both the wind direction and speed, from the state variables of the UA. T2 - IEEE Sensors 2018 CY - New Delhi, India DA - 28.10.2018 KW - UAV KW - Wind vector KW - Estimation KW - Multirotor aircraft PY - 2018 AN - OPUS4-46479 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Comparison of the Temperature Behavior of Oil and Gas Damped Piezoresistive Accelerometers N2 - This study presents the characterization of a piezoresistive accelerometer damped with silicon oil for the application in drop tests carried out at BAM. Experiments were performed with the Hopkinson Bar method in close correlation to the real-world application conditions. The results point out certain limitations regarding the temperature influence and the frequency response. Additional experiments were performed with a gas damped type of piezoresistive accelerometer, which has superior specifications, particularly for low temperatures. The results allow for a comparison. T2 - IEEE SENSORS 2018 CY - Neu Delhi, Indien DA - 28.10.2018 KW - Accelerometer KW - Temperature behavior KW - Frequency response KW - Hopkinson Bar KW - Drop test PY - 2018 AN - OPUS4-46484 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vandrich, Jasmina T1 - Tampering with ectoine production and excretion in Halomonas elongata using CRISPRi and gene knock-outs N2 - The halophilic bacterium Halomonas elongata can tolerate salt concentrations above 10% NaCl and uses the accumulation of the compatible solute ectoine as a major osmoregulatory mechanism. Ectoine can be accumalted inside the cell through import from the medium or de novo synthesis and establishes an osmotic equilibrium with the surrounding1. Ectoine also protects proteins from the effects of freezing, drying and high temperatures4 and DNA from ionizing radiation2. These features make ectoine a valuable compound for cosmetics and medical devices. H. elongata was originally isolated from a solar salt facility, where it thrives under high salt concentrations. It was found that marine prokaryotes, which are exposed to high oxidative stress in their environment, vary glycolytic strategies5. A variation in the use of the glucose metabolic pathways is also assumed for H. elongata. T2 - International Society for Microbial Ecology CY - Leipzig, Germany DA - 12.08.2018 KW - Halomonas CRISPR Ectoine PY - 2018 AN - OPUS4-46080 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vandrich, Jasmina T1 - Establishing CRISPRi in Halomonas elongata to uncover metabolic pathways N2 - The halophilic bacterium Halomonas elongata can tolerate salt concentrations above 10% NaCl and uses the accumulation of the compatible solute ectoine as a major osmoregulatory mechanism. Ectoine can be accumalted inside the cell through import from the medium or de novo synthesis and establishes an osmotic equilibrium with the surrounding1. Ectoine also protects proteins from the effects of freezing, drying and high temperatures4 and DNA from ionizing radiation2. These features make ectoine a valuable compound for cosmetics and medical devices. H. elongata was originally isolated from a solar salt facility, where it thrives under high salt concentrations. It was found that marine prokaryotes, which are exposed to high oxidative stress in their environment, vary glycolytic strategies5. A variation in the use of the glucose metabolic pathways is also assumed for H. elongata. T2 - Association for General and Applied Microbiology CY - Wolfsburg, Germany DA - 15.04.2018 KW - Halomonas CRISPR Ectoine PY - 2018 AN - OPUS4-46081 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vandrich, Jasmina T1 - CRISPRi for optimized ectoine production in Halomonas elongata N2 - The CRISPR-Cas9 system revolutionized genetic engineering approaches with its simple design and high accuracy. The system comprises only two components – a synthetic guide RNA and the Cas9 protein. Our aim is to use this system to study factors influencing ectoine production. Here, we use the CRISPRinterference variant to downregulate the expression of the ectoine synthesis gene ectA. T2 - Congress of European Microbiologists CY - Valencia, Spain DA - 09.07.2017 KW - Halomonas CRISPR Ectoine PY - 2017 AN - OPUS4-46082 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosemann, Paul A1 - Baumann, O. A1 - Müller, C. T1 - Influence of the post-weld surface treatment on the corrosion resistance of the duplex stainless steel 1.4062 N2 - The duplex stainless steel 1.4062 (X2CrNiN22-2) is used as alternative material to austenitic stainless steels in the construction industry. The corrosion resistance of welded seams is influenced by the base material, the weld filler material, the welding process and also by the final surface treatment. The scale layer next to the weld seam can be removed by grinding, pickling, electro-polishing or blasting depending on the requested corrosion resistance. Blasted surfaces are often used in the industrial practice due to the faster and cheaper manufacturing process compared to pickled or electro-polished surfaces. Furthermore blasting with corundum-grain is more effective than blasting with glass-beads which also lower the process costs. In recent years, stainless steel surfaces showed an unusually high susceptibility to pitting corrosion after grinding with corundum. For this reason, it is now also questioned critically whether the corrosion resistance is influenced by the applied blasting agent. This question was specifically investigated by comparing grinded, pickled, corundum-grain- and glass-bead-blasted welding seams. Results of the SEM analyses of the blasting agents and the blasted surfaces will be presented and correlated with the results of different corrosion tests (KorroPad-testing and pitting potentials). T2 - Materials Science and Engineering 2018 (MSE) CY - Darmstadt, Germany DA - 26.09.2018 KW - Duplexstahl KW - Korrosion KW - Nichtrostender Stahl KW - Schweißen KW - Oberflächenbearbeitung KW - Strahlen KW - KorroPad PY - 2018 AN - OPUS4-46090 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Philipp, Rosemarie T1 - Certified reference materials for breath alcohol control – the ALCOREF project N2 - ALCOREF is a project within the European Metrology Programme for Innovation and Research (EMPIR. It is part of the 2016 EMPIR Research Potential Call dedicated to build up metrological and research capacity in less developed National Metrology Institutes (NMIs). The project will develop long term expertise for the production and certification of ethanol/water reference materials in the participating NMIs. Materials to be developed will be suitable for the calibration and approval of evidential breath alcohol analysers as defined by recommendation R 126 of the International Organization of Legal Metrology (OIML). Certification includes the characterisation of the materials, assessment of homogeneity, stability and uncertainty. Target certified values and volumes will address end-users’ needs regarding regional legal limits for alcohol in traffic and the instrumentation for breath analyser calibration available in different countries. Thus, the project supports the law enforcement of national drink-driving legislation. The consortium comprises of 11 institutions from 10 European countries. Project participants will establish reliable analytical methods for the purity assessment of ethanol, such as Karl-Fischer titration, to achieve traceability of their certified values. Chromatographic or density methods for the quantification of ethanol in water will also be established, validated and applied for homogeneity and stability assessment. An interlaboratory comparison will be conducted within the European Association of National Metrology Institutes’ (EURAMET) Technical Committee Metrology in Chemistry to test the equivalence of the new certified reference materials and the analytical methods implemented. The poster will present the outline and first results of the ALCOREF project. T2 - BERM-15 International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 24.09.2018 KW - Certified Reference Material KW - Breath alcohol control KW - ALCOREF PY - 2018 AN - OPUS4-46061 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Long, Lijia T1 - Breaking the wall of value of monitoring information N2 - On 14 August 2018, the Morandi bridge in Genoa Italy collapsed, which caused 43 people to die and great losses. Here I am not going to talk about why it collapsed. But I want to say what we can do to prevent this kind of tragedy from happening. Any structures are like us, if we are sick, we go to doctors. But if structures are sick, how could we know? Yes, through structural health monitoring-SHM! SHM is process of implementing damage detection strategy, which is like a doctor giving us indication of the structure health status. However, the SHM is not like our health insurance which can be free. Some structure owners may be hesitated on investing large money before they see the VALUE. Although it is proved that SHM is beneficial, the existing literature doesn’t tell them: when to do the monitoring? How often to do that? Which SHM techniques to choose? After monitoring, what action to take? There are so many decisions needed to be made, that’s why here comes my research, which can help to answer all these questions by breaking the wall of value of monitoring information! So how do we do that? Here we introduce a decision tree. A Decision tree is a decision support tool that uses a tree-like graph or model to describe decisions and their possible outcomes, including how likely it will happen, how severe the consequences will be. Based on the probabilities and their respective costs and benefits, the value of every decision can be quantified. Based on the decision trees, different SHM strategies can be compared and the optimal strategy will be the one with highest value. After Knowing the value of SHM, we can improve the decision basis for design, operation and life-cycle integrity management of structures to reduce the risk, reduce the cost and extend service life benefits. So that everyone in society can benefit from a safer and more reliable environment! T2 - Falling Wall Labs Marie Curie Action 2018 CY - Brussels, Belgium DA - 24.09.2018 KW - Value of monitoring information PY - 2018 AN - OPUS4-46296 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ziegler, Mathias T1 - Benefits & peculiarities of using highpower lasers for lock-in thermography N2 - Optical lock-in thermography is a completely contactless and very sensitive NDE technique. As an optical source of energy, incandescent (i.e. halogen) lamps are most commonly used because they are relatively inexpensive, do not need any work safety measures and offer high irradiances at the test site. However, they are strongly restricted by their low modulation bandwidth with a maximum modulation frequency of only about 1 Hz. The use of high-power kilowatt-class laser sources, e.g. diode laser arrays, pushes this constraint beyond 100 Hz. This allows for the exploration of the near-surface region of metals and layer systems with better and more accurate penetration depth and depth resolution. Moreover, these lasers are virtually free of any additional thermal radiation that could interfere with the “true” thermal response emitted from the heated sample. In turn, they can be easily used in a one-sided test configuration. Altogether using lasers considerably increases the application range of lock-in thermography, since especially for metals with a high reflectance and high thermal diffusivity a high irradiance is vitally important to allow for lock-in testing [1, 2]. We report on the mentioned benefits of using such high-power lasers and analyze the range of materials to be tested using lock-in thermography in dependence on the laser irradiance, the modulation frequency, the infrared camera as well as the optical and thermal material parameters. In this context, we also address a number of systematic errors caused by the use of ideal and non-ideal heat sources. For example, the measured phase angle in lock-in thermography depends on the irradiance and the modulation bandwidth of the source. This in turn has a decisive influence on the uncertainty in the quantification of, e.g. layer thicknesses. T2 - INTERNATIONAL SCHOOL OF QUANTUM ELECTRONICS, 62nd Course, Progress in Photoacoustic & Photothermal Phenomena CY - Erice, Italy DA - 06.09.2018 KW - Thermography KW - Laser thermography KW - Lock-in thermography KW - NDT PY - 2018 AN - OPUS4-46282 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Thomas A1 - Schneider, Markus A1 - Schäpe, Kaija T1 - Classification of engineered Titania nanomaterials via surface analysis using principal component analysis (PCA) assisted Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) N2 - Due to the growing number of engineered nanomaterials (NM) the need for a reliable risk assessment for these materials is today bigger than ever before. Especially the nanomaterial’s surface or shell directly interacts with its environment and therefore is a crucial factor for NM’ toxicity or functionality. Especially, titania is one of the NM with the greatest technological importance. It is used for a large number of applications and can be found in food, cosmetics, glasses, mirrors, paints to mention only a few. In 2012, experts estimate[d] the annual European nano-titania production or utilization at an amount of more than 10,000 t. Great progress has been achieved in the area of NM investigation and characterization during the past decade. A variety of publications provide information about technological innovation as well as hazard potential, which means the potential risk on human health and ecosystems. However, enhanced data harmonization and well-defined standards for nanomaterial analysis, could significantly improve the reliability of such studies which often suffers from varying methods, parameters and sample preparations. To develop a suitable approach for the NM’s risk assessment, the ACEnano project aims at establishing a toolbox of verified methods. The size of this well-structured European project allows to handle even those big challenges like data harmonization and standardization. Due to its powerful combination of superior surface sensitivity and lateral resolution down to the Nano regime, ToF-SIMS could become one of these toolbox methods. Supported by multivariate data analysis such as principal component analysis (PCA), the method can be used for sub-classification of nanomaterial families using slight differences in surface chemistry. Here, we show a PCA supported classification of titania nanoparticles from various sources (NIST, JRC, BAM) with ToF-SIMS. Parameters like size, shell, pre-preparation and crystal system cause variance in the data and allow us to distinguish the species from each other. Moreover, this variance in the data also occurs and can be used for investigation when we compare our measurements of particle ensembles with those of grown titania films. The carefully selected and refined peaks allow a reasonable particle categorization and further a reliable allocation of blank feeds, which introduces a promising approach for NM characterization in the context of NM risk assessment. T2 - SIMS-Europe CY - Münster, Germany DA - 16.09.2018 KW - Nanoparticles KW - ToF-SIMS KW - XPS KW - PCA KW - Titania PY - 2018 AN - OPUS4-46250 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völker, Tobias T1 - Application of two calibration-free LIBS techniques for synthetic spectra of cement samples N2 - Two calibration-free LIBS techniques are used for the quantitative analysis of synthetic cement samples: the CF-LIBS based on the Boltzmann plot method and the Monte Carlo (MC) LIBS based on the iterative spectrum fitting. In CF-LIBS, the inverse problem is solved, i.e. the elemental concentrations are determined by the reconstruction of plasma parameters from spectra. The MC-LIBS technique solves the direct problem by finding the highest correlation between the model-generated and experimental spectrum. The accuracy of both calibration-free LIBS methods suffers from factors such as inaccurately determined instrumental function, the deviation of experimental plasma from the mathematical model used, not taking into account the collection geometry and from the uncertainty of spectroscopic data. Therefore, the both calibration-free LIBS approaches are applied to synthetic spectra which perfectly suit the mathematical model of the method. This test yields the accuracy of both the approaches for the ideal case. In addition, the accuracy of both methods is investigated for non-isothermal plasma, because real laser-induced plasma often has high gradients in temperature. Both methods assume an isothermal plasma. T2 - Xth international conference on Laser-Induced Breakdown Spectroscopy CY - Atlanta, GA, USA DA - 21.10.2018 KW - Cement KW - MC-LIBS KW - LIBS KW - CF-LIBS PY - 2018 AN - OPUS4-46774 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilsch, Gerd T1 - Schnelle quantitative Untersuchung der Elementverteilungen im Beton mittels LIBS N2 - Die Laserinduzierte Plasmaspektroskopie (engl.: Laser-induced Breakdown Spectroscopy, kurz: LIBS) ist eine Kombination aus Laserablation mittels eines energiereichen Laser-Pulses, der Erzeugung eines Plasmas auf der zu untersuchenden Oberfläche und dem quantitativen Nachweis der Elementzusammensetzung durch spektroskopische Untersuchung der vom Plasma emittierten Strahlung. Ein LIBS-Gerät liefert dem sachkundigen Planer Daten für die Bewertung des Ist-Zustandes von Bauwerken unserer Infrastruktur durch die zweidimensionale Erfassung von Elementverteilungen. Typische Anwendungen sind die Erfassung von Chlor, Schwefel, Kohlenstoff, Natrium, Kalium und Lithium in Beton oder als – Qualitätssicherung – der Nachweis der mit einem Marker versehenen Tiefenhydrophobierung. In Zusammenarbeit zwischen Industriepartnern und der BAM wurden ein Labor und ein mobiles LIBS-System für die Vor-Ort-Messungen entwickelt. Die Analyse erfolgt vollautomatisch. Die Ortsauflösung beträgt bis zu 0,1 mm x 0,1 mm. Es können Messflächen von 140 mm x 170 mm gescannt werden. Die Erstellung von 2D-Elementverteilungen im Beispiel unten benötigt weniger als 10 Minuten. T2 - ibausil - 20. Internationale Baustofftagung CY - Weimar, Germany DA - 12.09.2018 KW - LIPS KW - Chlorid KW - LIBS KW - Beton PY - 2018 AN - OPUS4-46778 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaal, Mate T1 - Airborne testing of molded polymer compounds N2 - Modern and energy-efficient materials are essential for innovative designs for aerospace and automotive industries. Current technologies for rapid manufacturing such as additive manufacturing and liquid composite moulding by polymer Extrusion allow innovative ways of creating robust and lightweight constructions. Commercially available printing devices often use polylactide (PLA) or acrylonitrile butadiene styrene (ABS) as raw material. Therefore, parameters like the infill ratio, influencing the ability to resist mechanical stress, may have a beneficial impact on the lifetime of components. These manufacturing technologies require a good knowledge about materials and even adapted non-destructive testing technologies and methods. Airborne ultrasonic testing has beneficial advantages for testing those lightweight constructions. It is a contact-free testing method, which does not require a liquid couplant. Therefore, it allows fast test cycles without any unwanted alternations of the material properties due to interactions with any coupling liquid. This contribution deals with the characterisation of printed specimens based on PLA by using airborne ultrasound and presents the current edge of non-destructive testing and evaluation using airborne ultrasonic transducers. The specimens, manufactured by polymer extrusion, are printed as thin plates. The infill ratio, as well as the material thickness, were varied to model density imperfections with different geometric shapes and properties. For better understanding of the limits of airborne ultrasonic testing in transmission, we compared own-developed transducers based on different physical principles: on ferroelectrets, on the thermoacoustic effect, as well as a new type of transducers based on gas discharges. T2 - 10th International Symposium on NDT in Aerospace CY - Dresden, Germany DA - 26.10.2018 KW - Airborne ultrasonic testing KW - Transducers KW - Ferroelectret KW - Thermoacoustic KW - Plasma KW - Polymer testing PY - 2018 AN - OPUS4-46655 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kapa, Thomas A1 - Hicke, Konstantin T1 - Sicherer Netzbetrieb durch Erkennung von betriebsgefährdenden Zuständen in Hoch- und Mittelspannungs-Betriebsmitteln unter Verwendung von integrierbaren faseroptischen Sensorsystemen ("Monalisa") N2 - Selbstdarstellung des Verbundvorhabens "Monalisa" auf der Konferenz "VDE Hochspannungstechnik" 2018 der entsprechenden Forschungsinitiative der Bundesregierung Kurzzusammenfassung der Teilprojekte und F&E-Ziele aller beteiligten Partnerinstitutionen (BAM,TU Berlin, HTW Berlin, BeuthHS Berlin, IPH GmbH) zum Bereich Monitoring von elektrischen Betriebsmitteln mit Hilfe von faseroptischer Sensorik. T2 - VDE Fachtagung Hochspannungstechnik CY - Berlin, Germany DA - 12.11.2018 KW - Betriebsmittelüberwachung KW - Faseroptische Sensoren KW - Hochspannungsanlagen KW - Kabelmonitoring KW - Verteilte faseroptische Sensorik PY - 2018 AN - OPUS4-46707 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Sebastian T1 - A new set of zinc based calibration samples for GD-OES N2 - The analysis of Zinc layers on Iron sheets is one of the most essential application of Glow Discharge - Optical Emission Spectrometry (GD-OES). Since the year 2000 for this application calibration of GD-OES instruments mostly included the set of the six calibration samples CZ 2009-CZ 2014 from CKD. These CRMs are no longer available. Furthermore, in this application the analysis of Al and Mg became essential. To overcome this lack of calibration materials, the working group VDEh FA II.47 decided to organize the production and characterization of a new set of certified reference materials. T2 - BERM CY - Berlin, Germany DA - 23.09.2018 KW - GD-OES KW - CRM KW - Zinc PY - 2018 AN - OPUS4-46718 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Sebastian T1 - A new set of zinc based calibration samples for GD-OES N2 - The analysis of Zinc layers on Iron sheets is one of the most essential application of Glow Discharge - Optical Emission Spectrometry (GD-OES). Since the year 2000 for this application calibration of GD-OES instruments mostly included the set of the six calibration samples CZ 2009-CZ 2014 from CKD. These CRMs are no longer available. Furthermore, in this application the analysis of Al and Mg became essential. To overcome this lack of calibration materials, the working group VDEh FA II.47 decided to organize the production and characterization of a new set of certified reference materials. T2 - 4th International Glow Discharge Spectroscopy Symposium CY - Berlin, Germany DA - 15.04.2018 KW - GD-OES KW - CRM KW - Zinc PY - 2018 AN - OPUS4-46719 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rolle, Annette A1 - Ballheimer, Viktor A1 - Neumeyer, Tino A1 - Wille, Frank T1 - Application of leakage rates measured on scaled cask or component models to the package containment safety assessment N2 - The mechanical and thermal loadings associated with the routine, normal and accident conditions of transport can have a significant effect on the leak tightness of the containment system of transport casks for spent fuel and high radioactive waste. The containment systems of such transport casks usually include bolted lids with metallic or elastomeric seals. Scaled cask models are often used for providing the required mechanical and thermal tests series. Leak tests have been conducted on those models. It is common practice to use scaled component tests to investigate the influence of deformations or displacements of the lids and the seals on the standard leakage rate as well as to study the temperature and time depending alteration of the seals. In this paper questions and open points of the transferability of scaled test results to the fullscale design of the containment system will be discussed. T2 - 11th International Conference on the Transport, Storage and Disposal of Radioactive Materials CY - London, UK DA - 15. Mai 2018 KW - Transport packages KW - Radioactve KW - Seals KW - Leakage rate PY - 2018 AN - OPUS4-46734 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuhlbusch, T. T1 - Test guideline on particle size and size distribution of manufactured nanomaterials N2 - The particle size distribution is considered the most relevant information for nanoscale property identification and material characterization. The current OECD test guideline on particle size and size distribution (TG 110) is not applicable to ‘nano-sized’ objects. In this project we thus develop a new OECD test guideline for the measurement of the size and size distribution of particles and fibers with at least one dimension in the range of 1 - 1000 nm. A fiber is defined as an object having an aspect ratio of length/diameter l/d >3. The width and length of each fiber should be measured concurrently. In order to measure the particle size distributions, many techniques are available. 9 methods for particles and 2 methods for fibres have been tested in a prevalidation study and appropriate methods will be compared in an interlaboratory round robin test starting in February 2019. T2 - Expertenaustausch Nanocluster und Malta-Initiative CY - Vienna, Austria DA - 30.10.2018 KW - Nanopartikel KW - Testguideline KW - Nano KW - Nanomaterial KW - Nano particle PY - 2018 AN - OPUS4-46669 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank A1 - Romero-Navarrete, José A. A1 - Lozano-Guzmán, A. A. T1 - Commodities and rail damage N2 - The normalized contact-mechanics fourth-power law approach for the dynamic loads, suggest: worst railway use situation (double deck at 65 km/h) is 350 times that of the less rail damage situation (flat car at 45 km/h). The normalized dispersion approach for the dynamic loads (Dynamic Load Coefficient), suggest that the worst railway use situation (double deck at 65 km/h) is about 4 times that of the less rail damage Situation (flat car at 45 km/h). The potential effect of the different types of cars on the railway fatigue life could be significant, as a function of the vehicle speed. The experimental validation of these outputs will be carried out as a continuation of this research effort. In addition to that, it should be mentioned that the associated simplified model could be used to analyze some other situations, related with the transport safety of different products. T2 - IMECE 2018 International Mechanical Engineering Congress and Exposition CY - Pittsburgh, PA, USA DA - 09.11.18 KW - Commodities KW - Rail KW - Damage PY - 2018 AN - OPUS4-46649 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hicke, Konstantin T1 - Sicherer Netzbetrieb durch Erkennung von betriebsgefährdenden Zuständen in Hoch- und Mittelspannungs-Betriebsmitteln unter Verwendung von integrierbaren faseroptischen Sensorsystemen („Monalisa“) N2 - Darstellung des Verbundvorhabens "Monalisa" und der im Rahmen des Projekts erzielten F&E-Fortschritte auf dem 2. Statusseminar "Zukunftsfähige Stromnetze" des PTJ zur gleichnamigen Forschungsinitative der Bundesregierung. Präsentiert werden Fortschungsergebnisse zum Thema Zustandsüberwachung von verschiedenen elektrischen Betriebsmitteln (Kabel, Garnituren, Schaltanlagen, Schalter) mittels faseroptischer Sensorik. Das Monitoring bezieht sich dabei auf Temperatur, Vibrationen, eindringende Feuchte, Dehnung, und die Detektion von Teilentladungen T2 - 2. Statusseminar „Zukunftsfähige Stromnetze“ CY - Berlin, Germany DA - 20.11.2018 KW - Faseroptische Sensorik KW - Energiekabelmonitoring KW - Unterseekabel KW - Zustandsüberwachung PY - 2018 AN - OPUS4-46750 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raysyan, Anna T1 - An immunochromatographic assay for the determination of bisphenol a releases from plastic materials N2 - Background. The worldwide increase in the use of bisphenol A (BPA), a monomer commonly used to manufacture polycarbonate plastic products and the epoxy resins that line metal cans, has resulted in an increased human exposure because both products come in contact with food and beverages. Since BPA is an endocrine disruptor excessive exposure could affect human reproductive function. In response, various countries have adopted a range of measures, from voluntary reductions to outright bans of BPA in some products, mostly in baby bottles and containers for canned foods. Nonetheless, consumers would certainly appreciate a quick test for their own assessment of contaminations by bisphenol A. Methods. An immunochromatographic test strip was developed. This lateral-flow immunoassay (LFIA) is based on anti-BPA antibodies (from mouse) conjugated with gold nanoparticles as the marker, deposited in an elaborate pad. To form control and test zones, anti-mouse antibody and a BPA-BSA conjugate were spotted on the nitrocellulose membrane, respectively. Results. Negative samples are revealed by red lines both in the test and control zones, respectively, whereas positive samples produce a single red line only in the control zone. The limit of detection (LOD) was found to be 0.05 µg/l, visually detected by the naked eye within 5 minutes. In addition, the intensities at the test line can be read by dedicated lateral flow readers (opTrilyzer® and Cube by opTricon, Berlin) for a more precise and documented determination. Conclusion. Pregnancy-test like strips in combination with hand-held readers provide a simple and versatile tool to determine the presence of bisphenol A quantitatively, making it a very attractive analytical approach especially for on-site applications at critical points, such as environmental analysis, consumer protection, and materials testing. T2 - International Biotech Innovation Days CY - Senftenberg, Germany DA - 22.05.2018 KW - Immunoassay KW - BPA KW - LFIA KW - Plastic PY - 2018 AN - OPUS4-46752 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilsch, Gerd T1 - Detection of ion ingress by LIBS for Evaluation of the remaining lifetime of a concrete structure N2 - The majority of the built infrastructure is made of concrete, which is a multiphase system made of cement, aggregates, water and pores. Concrete is often used in combination with steel as reinforced concrete. Environmental influences, especially the ingress of harmful ions in combination with the ingress of water, trigger different damage processes which reduce the designed lifetime of a structure. The ingress of chlorides from de-icing salt or sea water leads to corrosion of the reinforcement. Also the carbonation of the concrete may trigger the corrosion of the reinforcement. The ingress of alkalis from de-icing salts may cause the expansion of the amorphous silica aggregates (alkali-silica reaction) through formation of a swelling gel of calcium silicate hydrate if water is present. The ingress of sulfates may cause spalling of the concrete surface due to ettringite formation. For the standard procedure in civil engineering cores are taken, cut in slices, grinded and the obtained homogenized powder is solved in acid and investigated by standard procedures. BAM has developed the LIBS technique for the 2D evaluation of the chemical composition of concrete [1-11]. The technique is established for automated laboratory use with high numbers of samples to investigate transport processes of harmful species (Cl-, CO2, SO42- and alkalis) in concrete. Information about ingress depth and the quantitative values are important to estimate the remaining lifetime of the infrastructure. LIBS is a surface technique. To get information about the ingress depth, a core has to be taken and cut in the middle. The measurements are carried out at the cross section. The main advantages of LIBS are the direct measurement on the surface of the concrete, fast analysis (sample rate 100 Hz) with a spatial resolution of up to 100 µm, the consideration of the heterogeneity of the concrete and the possibility of automated measurements which save a lot of manpower and time. As an example the investigation of ingress profiles for standard diffusion and migration tests in civil engineering takes hours in comparison to just a few minutes using LIBS. At the same time a 2D-evaluation provides information about hot spots of elemental concentration which may not be found by standard methods. Ingress of chlorides due to a crack in a repair mortar. Left: Photo of the cross section of a concrete core and the surface investigated by LIBS (area 70 mm x 70 mm). Right: Color coded chlorine intensity on the cross section of a concrete core, dark red represents high chlorine content. The state of the art of LIBS technique for applications in civil engineering will be presented, including typical results of 2D investigation of concrete in laboratory. The performance is also demonstrated by examples for onsite applications using a mobile LIBS system. The road map to standardization is presented as well. T2 - ASNT SMT/NDT-CE 2018 CY - New Brunswick, NJ, USA DA - 27.08.2018 KW - Damage processes KW - LIBS KW - Concrete KW - Chloride PY - 2018 AN - OPUS4-46782 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völker, Tobias T1 - Quantitative on-site analysis of harmful elements in building structures with a mobile LIBS-System N2 - Environmental influences and damage processes drastically reduce the durability of concrete and reinforced concrete structures. Much of this damage can be traced back to the penetration of harmful elements into the concrete. These elements cause damage processes such as the chlorine-induced corrosion, the alkali-silica reaction or the carbonization. For the maintenance the knowledge of the element concentration and the penetration depth of these harmful elements is essential. Based on this data, a maintenance concept can be developed and an estimation of the remaining service life-time can be carried out. Typically, chemical analyzes are used to determine harmful elements in concrete, which are costly and time consuming. As an alternative method LIBS is used. On-site measurements were carried out with a mobile LIBS-System to determine harmful elements in a parking garage. A scanner is used to obtain a two-dimensional element mapping. For the quantitative analysis, a calibration of the system is carried out with 15 reference samples based on cement with NaCl with a concentration range of chlorine of 0.05 to 2.5 wt.%. To determine the penetration profile of the harmful element chlorine, concrete cores were drilled, split and analyzed directly on-site. T2 - Xth international conference on Laser-Induced Breakdown Spectroscopy CY - Atlanta, GA, USA DA - 21.10.2018 KW - LIBS KW - Mobile-LIBS KW - On-site analysis KW - Concrete PY - 2018 AN - OPUS4-46790 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Tobias T1 - Spatially resolved determination of chloride content on rough surfaces using LIBS N2 - The durability and the lifetime of reinforced concrete structures can be drastically reduced by the influence of damage processes. One of the most common causes is chloride-induced corrosion, which is triggered by increased chloride content near the reinforcement. In a study, the chloride content should be determined directly at corrosion areas. The LIBS system used consists of a micro-chip laser (3 mJ, 100 Hz, 1.5ins) and two compact spectrometers covering the wavelength range of 177-355 nm (UV) and 750-940 nm (NIR). The analysis of the chloride content was carried out via the atomic chlorine spectral line 837.59 nm, using helium for signal amplification. Calibrations were carried out for quantitative chlorine measurements with 15 reference samples in the working range of 0.05 to 6.00 wt% chlorine. The calibration of the LIBS system was done according to DIN 32 645 and was tested for linearity. The determination of the quantitative chlorine contents was carried out on samples which were broken and thus have a high surface roughness. This requires real time correction of the focus point to compensate for the roughness of the samples. The poster shows spatially resolved element distributions and determined quantitative chloride concentrations near the corrosion Areas. T2 - Xth international conference on Laser-Induced Breakdown Spectroscopy CY - Atlanta, GA, USA DA - 21.10.2018 KW - LIBS KW - Rough surface KW - Chloride PY - 2018 AN - OPUS4-46791 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Isleyen, A. T1 - A joint research project for the sustainable production of certified matrix reference materials for environmental analysis N2 - This project aims to develop capacity to produce certified reference materials (CRMs) for environmental analysis by transferring know-how between the partners and combining their skills to focus on environmental CRM production. The production process includes good manufacturing practices for processing materials, method development, the validation and application of homogeneity, stability and characterisation tests, the calculation of individual uncertainties (between-unit inhomogeneity, long term stability, characterisation) and combination of uncertainties to determine overall uncertainty of the matrix reference materials. An inter laboratory comparison registered as a EURAMET project is set as the ultimate project outcome, confirming the partners’ capabilities in applying newly acquired skills. T2 - BERM-14 CY - National Harbor, Maryland, USA DA - 11.10.2015 KW - Reference material KW - Priority pollutants KW - Toxic metals KW - PFOS KW - PFOA PY - 2015 AN - OPUS4-45251 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Näykki, Teemu T1 - A joint research project for the sustainable production of certified matrix reference materials for environmental analysis N2 - This project aims to develop capacity to produce certified reference materials (CRMs) for environmental analysis by transferring know-how between the partners and combining their skills to focus on environmental CRM production. The production process includes good manufacturing practices for processing materials, method development, the validation and application of homogeneity, stability and characterisation tests, the calculation of individual uncertainties (between-unit inhomogeneity, long term stability, characterisation) and combination of uncertainties to determine overall uncertainty of the matrix reference materials. An inter laboratory comparison registered as a EURAMET project is set as the ultimate project outcome, confirming the partners’ capabilities in applying newly acquired skills. T2 - EcoBalt 2016 CY - Tartu, Estonia DA - 09.10.2016 KW - Certified reference material KW - Toxic metals KW - PFOS KW - PFOA PY - 2016 AN - OPUS4-45254 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Isleyen, A. T1 - Joint research project for the production of certified matrix reference materials for environmental analysis N2 - Reliable analysis of chemical indicators in water, sediment and soil samples for the purpose of environmental pollution assessment poses one of the greatest analytical challenges, having in mind the complexity of sample matrix and low concentrations of pollutants. Organics (pesticides, PAHs, PFOS, etc.) and heavy metals (Hg, Cd, Ni, Pb and As) represent target parameters. Laboratories performing sampling and tests in this field regulated by respective EU directives, need strong support in order to establish a quality system. It is necessary to provide appropriate calibrators i.e. matrix CRMs relates to the unique sample matrices representing typical samples in the geomorphological and anthropological sense. In addition to that, bearing in mind the complexity and instability of environmental samples, it is very difficult to obtain appropriate referents materials with no local providers. Our project is aiming to develop capacity to produce CRMs for environmental analysis by transferring the theoretical and practical know-how between the partners and combining their skills to focus on environmental CRM production in accordance with ISO Guide 34. Our project will have an impact on environmental monitoring in the partnering countries and on the scientific community, who will use the newly developed reference materials. Furthermore, partners will develop strategies for producing new CRMs either on their own or in cooperation. This will lead to regional CRM producers serving scientific and official laboratories. T2 - 2nd International Congress of Chemists and Chemical Engineers of B&H CY - Sarajevo, Bosnia and Herzegovina DA - 21.10.2016 KW - CRM KW - Environmental analysis KW - CRM producer KW - Quality system PY - 2016 AN - OPUS4-45257 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Braun, Ulrike T1 - Determination of tire wear particles based on elemental composition N2 - In this presentation the use of ICP-MS for the analysis of tire wear particles in environmental samples is presented. T2 - Wassertagung der GdCh CY - Papenburg, Germany DA - 07.05.2018 KW - ICP-MS KW - Mikroplastik KW - Analytik KW - Reifenabrieb PY - 2018 AN - OPUS4-45201 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Franz-Georg T1 - Approach for analysis of environmental impact of geosynthetics in aquatic systems by example of the Baltic Sea N2 - Whereas the behavior of geosynthetics in landfill engineering is well studied and documented since decades, little is known on application in applications such as coastal protection or ballast layers for wind energy plants. However, due to the rapid expansion of offshore wind energy, rising water levels and more extreme weather conditions as a result of climate change more and more hydraulic engineering projects will be realized in the future. Construction with geosynthetics has various advantages, but it has to be ensured that there is no negative environmental impact from the application of geosynthetics in hydraulic engineering. It is expected that any effect will be visible only on the long-term. Therefore, accelerated testing is needed to derive requirements for geosynthetics in hydraulic engineering. T2 - 7th IEEE/OES Baltic Symposium, Clean and Safe Baltic Sea and Energy Security for the Baltic countries CY - Klaipeda, Lithuania DA - 12.06.2018 KW - Geosynthetics KW - Artificial ageing KW - Micro plastic PY - 2018 AN - OPUS4-45206 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Thomas T1 - Chemical Analysis of Core-Shell Nanoparticles using ToF-SIMS and XPS N2 - The analysis of nanomaterials is current an important task - especially in case of risk assessment, as the properties of these material class are not well understood currently. The rather high surface area of these objects renders their interactions significantly different to their corresponding bulk. Thus, the surfaces chemical composition has to be investigated to get a better understanding and prediction of the nanomaterials' behavior. ToF-SIMS has proven as a powerful tool to determine said chemical composition. Its superior surface sensitivity allows us to study mainly the utmost atomic layer and therefore gives us an idea of the interactions involved. Here, we show first result from the validation of the method for the analysis of polystyrene and gold nanoparticles. ToF-SIMS will be compared to other methods like XPS, T-SEM or REM. Furthermore, principle component analysis (PCA) will be used to detect the influence of different sample preparation performed by an innovative microfluidic device. ToF-SIMS imaging is desired to be implemented for single particle detection as well. T2 - DPG-Frühjahrstagung der Sektion Kondensierte Materie gemeinsam mit der EPS CY - Berlin, Germany DA - 11.03.2018 KW - XPS KW - ToF-SIMS KW - Nanoparticles PY - 2018 N1 - Geburtsname von Müller, Anja: Hermanns, A. - Birth name of Müller, Anja: Hermanns, A. AN - OPUS4-44790 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gardei, André T1 - Probenpräparation für LIBS-Messungen - ein häufig unterschätztes Thema N2 - Die Probenpräparation ist ein Teil im Prozess der Baustoffuntersuchung und muss dementsprechend sorgfältig geplant werden. Die Probenpräparation ist letztendlich der Grundstein für alle folgenden Untersuchungen, somit wirken sich alle hier getroffenen Entscheidungen direkt auf die Qualität der Ergebnisse aus. T2 - Fachtagung Bauwerksdiagnose CY - Berlin, Germany DA - 15.02.2018 KW - Probenpräparation KW - LIBS PY - 2018 AN - OPUS4-44656 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wille, Frank T1 - Revision of IAEA Guidance Material for Package Load Attachment Points N2 - For transport operations according IAEA regulations SSR-6, the package shall be securely stowed and the package shall be capable to withstand specific effects, e.g. accelerations, during routine transport conditions. The supporting IAEA Advisory Material SSG-26 provides information how to do that. General information and detailed load factors for use in safety demonstrations are provided. Up to now package designers in different countries use other load factors for the design of attachment points than those specified in the IAEA guidance material. In particular the acceleration factors vary between different countries and lead to difficulties during the validation of foreign approval certificates. The background of the existing guidance including specified load values was not clear enough. The application of specified values and the boundary conditions, i.e. transport conditions, seemed to be improvable. The IAEA started a discussion process to review the existing guidance text. An international working group was constituted in 2013. Representatives came from different stakeholders, e.g. transport operators, competent authorities and modal organizations. The discussions concluded especially on the transport conditions which has to be considered for stowage design, including on the one hand the relevance of the load factors used for strength and fatigue analysis and, on the other hand the criteria which have to be considered for the attachment points. In addition, complementary questions relative to the operational aspects were discussed. Revised load values for different transport modes were proposed. The values are derived from standards and include safety factors now. As a result of those discussions, the international working group wrote new guidance material for stowage in transport, addressing all the previously quoted topics. T2 - WM2018 Conference CY - Phoenix, Arizona, USA DA - 18.03.2018 KW - Acceleration values KW - IAEA regulations KW - Routine conditions of transport PY - 2018 AN - OPUS4-44866 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Griesche, Axel T1 - Hydrogen in Iron visualized in 3D by neutron tomography N2 - Presented are neutron tomographies on hydrogen charged iron samples. T2 - RACIRI Summer School 2015 CY - Sellin, Rügen, Germany DA - 22.08.2015 KW - Tomographie KW - Wasserstoff KW - Neutronen KW - Hydrogen KW - Neutron KW - Tomography PY - 2014 AN - OPUS4-44838 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertin, Annabelle T1 - Upper critical solution temperature (UCST)-type thermoresponsive polymers from monomers with hydrogen-bonding interactions N2 - UCST-type thermoresponsive polymers (i.e. that phase separate from solution upon cooling) present a tremendous potential not only in aqueous media with applications in the field of drug delivery, diagnostic and microfluidic applications, but also in water/alcohol mixtures, where they can be used for instance in sensing systems for alcohol-soluble drugs. However, only a few thermoresponsive polymers have been reported that present an UCST in a relevant temperature range and “green” solvents such as water or ethanol. In this context, acrylamide-based monomers can be very useful building blocks for designing novel non-ionic UCST-type polymers because of their hydrophilic nature (with the appropriate side chain) and propensity to form hydrogen bonds. We will present our latest results on the UCST-type thermoresponsive behaviour of acrylamide- and/or 2,6-diaminopyridine-based homopolymers and copolymers in water or water/alcohol mixtures, and give some insights about the rational design of UCST polymers relying on H-bonding. T2 - 7. Jahrestreffen der Seniorexperten Chemie CY - Weimar, Germany DA - 02.05.2018 KW - Thermoresponsive polymer KW - UCST-type polymer KW - Polyacrylamide KW - Water/alcohol mixtures PY - 2018 AN - OPUS4-44845 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, Andre T1 - Kinematic aspects of RAM packages drop tests N2 - BAM is the German Federal Institute for Materials Research and Testing and the competent authority for mechanical and thermal safety assessment of transport packages for spent fuel and high level waste. In context with safety assessment of RAM packages BAM performed numerous drop tests in the last decades. The tests were mostly accompanied by extensive and various measurement techniques especially by instrumented measurements with strain gages and accelerometers. The procedure of drop testing and the resulting measurement analysis are the main methods to evaluate the safety against mechanical test conditions. Measurement techniques are dedicated to answer questions in regard to the structural integrity of a RAM package, the mechanical behavior of the prototype as well as of its content under impact conditions. Test results like deceleration-time functions constitute a main basis for the validation of assumptions in the safety analysis and for the evaluation of numerical calculations. In this context the adequate selection of accelerometers and measurement systems for the performance of drop tests is important. Therefore it is not only necessary to find suitable positions for the accelerometers at the test specimens, but also to consider technical boundary conditions as e.g. temperature. T2 - 2018 WM Symposia CY - Phoenix, AZ, USA DA - 18.03.2018 KW - Drop KW - Test KW - Measurement KW - Kinematic KW - Analysis PY - 2018 AN - OPUS4-44874 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lüth, Peter T1 - CEQAT-DGHS Interlaboratory test programme for chemical safety - status and activities N2 - Safety experts, carriers or traders must be able to rely on the validity of the method and on correct results of safety tests and assessments in the laboratory. Bundesanstalt für Materialforschung und –prüfung (BAM), Berlin and Physikalisch-Technischen Bundesanstalt (PTB), Braunschweig have extensive experience in the field of testing and assessment of physical hazards of chemicals. Interlaboratory tests on different test methods have been performed by BAM and PTB during the last 10 years. Significant differences between the results of the participating laboratories were observed in all interlaboratory test. The deviations of the test results were not caused only by laboratory faults but also by deficiencies of the test method; i.e. many of the method descriptions are too ambiguous and allow divergences for interpretation. Therefore, it is necessary to know exactly how good the method is that is used to classify dangerous goods or hazardous substances or to determine safety-relevant parameters. A key criterion is the measurement uncertainty. One can choose simple methods with large error limits, but the measurement uncertainties should be known and always communicated together with the test results. This would allow safety specialists to be able to assess test results correctly and make well-founded decisions, e.g. for adequate protective measures. Interlaboratory tests play a decisive role in assessing the reliability of test results. Participation in interlaboratory tests is not only a crucial element of the quality assurance of laboratories; as such it is explicitly recommended in DIN EN ISO/IEC 17025. In addition, interlaboratory tests are also used to develop and validate test methods and can be used for the determination of the measurement uncertainty. Therefore, the BAM and PTB continue to support the further development of the interlaboratory test programme of CEQAT-DGHS (Centre for quality assurance for testing of dangerous goods and hazardous substances, www.ceqat-dghs.bam.de), established in 2007. This programme is run by BAM in collaboration with the PTB and the QuoData Gesellschaft für Qualitätsmanagement und Statistik mbH, Dresden. A new interlaboratory test for methods validation on the test method UN Test N.5 "Test method for substances which in contact with water emit flammable gases” is currently being prepared and will be carried out in 2018. Laboratories that specialise in this test are invited to participate in the interlaboratory test. Interested laboratories can check the details and register to participate in the interlaboratory test at the CEQAT-DGHS website. T2 - MEETINGS OF IGUS EOS GROUP CY - Shanghai, P. R. China DA - 09.04.2018 KW - Dangerous goods KW - Hazardous substances KW - Test methods validation KW - Quality assurance PY - 2018 AN - OPUS4-44858 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Linnemann, Konrad T1 - Experience by BAM in the transport package safety assessment of German waste containers N2 - Transport and storage containers for low and midlevel radioactive waste are getting more and more of relevance due to the nuclear phase out decision in 2011. For higher activities Type B(U) approved waste containers will be needed for the shut down and dismantling phases of NPPs. It is expected that large quantities are required in the near future. German waste containers are generally approved for transport and interim storage and are also intended for the final disposal in the Konrad repository. BAM is involved in the authority licensing of transport package designs in Germany. In this context, BAM is responsible for the assessment of safe containment, mechanical, thermal and quality management issues. BAM also operates test facilities and performs drop as well as thermal tests during package licensing procedures. This paper summarizes our experience in the transport package design assessment of Type B(U) waste containers. A general overview of the approval process, the requirements and approaches BAM applies are described. Some examples are used to illustrate different aspects and technical issues we are addressing during the package assessment. In the first part of the paper the specific design aspects of German waste containers are described. Here, a general overview is given e.g. about closure systems, impact limiter designs, and the handling concepts. Furthermore, the wide range of radioactive content and their physical behavior including the impact on the packages assessment are described. The second part is focused on questions about the licensing and assessment process of German waste containers from the BAM authority point of view. The general approaches for the strategy of demonstration are outlined on the basis of the test conditions according to IAEA Regulations SSR-6. Furthermore, particular issues of the mechanical and thermal assessment with respect to the specific test conditions are discussed. For accident conditions of transport, aspects to be mentioned are e.g. the assessment of the lid bolts, the axial gap applied between content and lid, and the thermal behavior of the wood filled impact limiter after the fire test. However, issues of the assessment for routine and normal conditions of transport are addressed in this paper, too. The intention of this paper is introduce recent approval procedure experience in Germany, describing technical evaluation issues and so reduce rounds of questions during applications. T2 - 2018 WM Symposia CY - Phoenix, AZ, USA DA - 18.03.2018 KW - Transport packages KW - Safety assessment KW - Lowlevel midlevel radioactive waste PY - 2018 AN - OPUS4-44860 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Manolov, Manol T1 - Bestimmung der Maschinennachgiebigkeit beim Einsatz sphärischer Indenter in der Instrumentierten Eindringprüfung N2 - Der Einfluss der Maschinennachgiebigkeit einschließlich der elastischen Verformung des Indenters ist bei der Bestimmung der entsprechenden Werkstoffcharakteristiken insbesondere beim Einsatz von sphärischen Indentern unter höheren Prüfkräften von Bedeutung. Mit zunehmender Prüfkraft wird die Maschinennachgiebigkeit kraftabhängig und kann im idealen Fall als Funktion von Prüfkraft und gemessener Eindringtiefe für vorgegebene Indenterradien dargestellt werden. Angegeben ist ein vereinfachtes Verfahren zur Bestimmung der Maschinennachgiebigkeit. T2 - Sensoren und Messsysteme CY - Nürnberg, Germany DA - 26.06.2018 KW - Maschinennachgiebigkeit KW - Instrumentierte Eindringprüfung KW - Sphärische Indenter KW - Vereinfachtes Verfahren KW - Kraftabhängige Funktion KW - Härtevergleichsplatten KW - Eindringmodul PY - 2018 AN - OPUS4-45390 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kakoulides, E. T1 - Development of Certified Reference Materials for the calibration of breath analyzers N2 - IAPR participates in the EMPIR 16SRT02, entitled ‘Certified forensic alcohol reference materials - ALCOREF’ funded by EURAMET as an external funded partner. The Research in this project will address the needs for better enforcement of drink-driving legislation in several European countries, by building up long-term capacities for the production and certification of forensic alcohol reference materials, suitable for the calibration of evidential breath alcohol analyzers. The certification procedure includes characterization of the materials, assessment of homogeneity, stability, and uncertainty estimation. An interlaboratory comparison will be conducted to test the materials and capabilities developed. EMPIR 16SRT02-ALCOREF project is coordinated by BAM (DE). T2 - 7th National Metrology Congress CY - Athens, Greece DA - 11.05.2018 KW - Certified reference materials KW - Metrology institute KW - Calibration KW - Uncertainty PY - 2018 N1 - Sprache der Posterpräsentation: Griechisch AN - OPUS4-45321 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Temperature characteristics of a piezoresistive accelerometer for high impact shock application N2 - This study presents the characterization of a piezoresistive accelerometer damped with silicon oil for the application in drop tests carried out at BAM. Experiments were performed with the Hopkinson Bar method in close correlation to the real-world application conditions. The results point out certain limitations regarding the temperature influence and the frequency response. Additional experiments were performed with a gas damped type of piezoresistive accelerometer, which has superior specifications, particularly for low temperatures. The results allow for a comparison. T2 - Sensoren und Messsysteme CY - Nürnberg, Germany DA - 26.06.2018 KW - Piezoresistive accelerometer KW - Hopkinson bar KW - High impact shock application KW - Temperature characteristics KW - Drop test PY - 2018 AN - OPUS4-45322 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehrig, Marko T1 - Large Scale IAEA Thermal Test with Wood filled Impact Limiters N2 - Packages for the transport of radioactive material are often equipped with impact limiters consisting of wood. Mostly this wood is encapsulated by steel sheets. The impact limiters are needed to ensure that the transport casks meet the IAEA safety requirements. According to the IAEA safety requirements a package has to withstand consecutively severe mechanical tests followed by a thermal test. The mechanical tests have to produce maximum damage concerning the thermal test. Following this, the impact limiters may have serious pre-damage when the thermal tests begins. The IAEA safety requirements state that during and following the fire test, the specimen shall not be artificially cooled and any combustion of materials of the package shall be permitted to proceed naturally. Small scale fire tests with wood filled metal drums by BAM and works of the French Institute for Radiological Protection and Nuclear Safety (IRSN) showed that pre-damaged steel encapsulated wooden structures could start smoldering initiated by the thermal test. These processes supply additional energy to the cask which should be considered within the safety assessment of the package. As not much is known about smoldering processes in encapsulated wooden structures with a reduced oxygen supply the need for a test was identified. To investigate the influence of a smoldering impact limiter concerning the amount of energy supplied to the cask in dependence of the time BAM conducted a large scale impact limiter thermal test. For that, a pre-damaged impact limiter with a diameter of 2,3 m was mounted on a water tank simulating a cask. A complex system of a regulated pump, a heater, a cooler, a slide valve, a flow meter and numerous thermocouples were installed and connected to a control unit to ensure all needed operating conditions. After a pre-heating compared to typical SNF decay-heat, the 30 min lasting fire phase of the thermal test was started. After that, the expected and initiated smoldering began. The results of the large scale test are presented in this poster. Systematic small scale tests will follow to identify the influence of different parameters, e.g. moisture content and scale effects. The tests took place at BAM Test Site for Technical Safety (TTS) with its various possibilities for mechanical and thermal tests. The results of these tests will have direct influence in the safety assessment of transport cask for the transport of radioactive material. T2 - 2018 WM Symposia CY - Phoenix, AZ, USA DA - 18.03.2018 KW - Type-B Package KW - Accident Conditions of Transport KW - Thermal Test PY - 2018 AN - OPUS4-45310 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falk, Florian A1 - Menneken, Martina T1 - Early oxidation and sulfidation of high temprature alloys: An EDXRD in-situ study N2 - P92 is one of the important steels for super heater tubes used in combustion plants. However, in fossil fuel fired environments the formation of oxides and sulfides are challenging the material. To understand early corrosion mechanisms, which are important for process prediction, high temperature in-situ ageing experiments of Fe-Cr-Mn alloys in SO2 and SO2+H2O atmosphere were performed, applying energy dispersive X-ray diffraction (EDXRD) analysis. T2 - Bessy usermeeting CY - Berlin, Germany DA - 05.12.2017 KW - Corrosion KW - In-situ KW - EDXRD PY - 2017 AN - OPUS4-45368 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ernst, O. T1 - Local growth and insulation of CIGSe islands for micro concentrator solar cells N2 - Thin film solar cells made of Cu(In,Ga)Se2 (CIGSe) suffer from high costs, since the rare elements indium and gallium are used for a multitude of technical applications. The concept of micro-concentrator CIGSe solar cells allows substantial material saving. Therefore a reliable bottom up process for the preparation of the absorber islands is required. In addition, this also results in an increase of solar cell efficiency. We show that the indium islands can be grown at predefined locations by novel methods of surface treatment before indium deposition. By this, regular island patterns with a well-defined morphology have been obtained. The controlled deposition of copper, followed by selenization in a PVD system, and selective etching of copper selenides yields polycrystalline CIGSe micro islands with promising material properties. For the samples, we proof ways to place a non-conducting layer in between CIGSe islands to insulate the front and back contact. This layer is obtained by spin-coating and curing a novolak based resist. At first, the photovoltaic active absorber islands is completely covered by the resin. The top of the islands can be stripped by plasma etching for front contacting. A characterization of the obtained devices provided evidence for their functionality. T2 - European Materials Research Society (EMRS) Spring Meeting 2018, Symposium A “Thin film chalcogenide photovoltaic materials” CY - Strasbourg, France DA - 18.06.2018 KW - Cu(In,Ga)Se2 KW - Micro solar cell KW - Light concentration KW - Laser patterning PY - 2018 AN - OPUS4-45380 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lüth, Peter A1 - Brandes, E. A1 - Frost, K. A1 - Kurth, Lutz A1 - Schmidt, Martin A1 - Michael-Schulz, Heike A1 - Uhlig, S. T1 - CEQAT-DGHS Ringversuchsprogramm für die Chemikaliensicherheit -Methodenvalidierung N2 - Bei der Bewertung der Verlässlichkeit der im Labor gewonnenen Prüfergebnisse spielen Ringversuche eine entscheidende Rolle. Die Bundesanstalt für Materialforschung und –prüfung (BAM) unterstützt deshalb den weiteren Ausbau des Ringversuchsprogramms des im Jahr 2007 gegründeten Kompetenzzentrums zur Qualitätssicherung für Prüfungen von Gefahrgütern und Gefahrstoffen auf physikalische Gefahren (Centre for quality assurance for testing of dangerous goods and hazardous substances, CEQAT-DGHS). Bei allen bisher untersuchten Prüfmethoden besteht ein Verbesserungsbedarf. Die RV müssen daher zunächst auf die Methodenentwicklung, -verbesserung und -validierung und auf die Bestimmung der Messunsicherheit der jeweiligen Prüfmethode abzielen und nicht auf Leistungstests. T2 - Behörden-Erfahungsaustausch CY - Berlin, Germany DA - 4. Juni 2018 KW - Prüfmethode KW - Methodenvalidierung KW - Gefahrgut KW - Gefahrstoff KW - Qualitätssicherung PY - 2018 AN - OPUS4-45297 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Illerhaus, Bernhard A1 - Joschko, M. A1 - Walla, M. A1 - Barkusky, D. A1 - Gerlach, F. T1 - Wunderwelt der Mikro-Computertomografie: Die Wurzeln des Raps N2 - Mit Hilfe der Computertomographie können zerstörungsfrei Bilder des Bodengefüges gewonnen werden. Sowohl die verschiedene Dichte des Bodens als auch Hohlräume und Poren sowie Wurzeln und anderes organisches Material können dargestellt werden. Die Wurzeln werden dabei lagerichtig wiedergegeben. Begrenzt wird dieses durch die Ortsauflösung des jeweiligen Tomogramms. Ist die Methode für eine Fragestellung aus der landwirtschaftlichen Praxis – Einfluss der Bodenbearbeitung auf das Wurzelbild von Raps – geeignet? T2 - BraLa 2018 CY - Paaren, Germany DA - 10.05.2018 KW - Computertomographie KW - Bodenstruktur PY - 2018 AN - OPUS4-44884 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wander, Lukas T1 - Mikroplastikanalyse: Nahinfrarotspektroskopie und chemometrische Auswertung N2 - Für die Erfassung der Verbreitung von Mikroplastik (MP) in der Umwelt ist die zeit- und kostenaufwendige Analysestrategie und der damit verbundene geringe Probendurchsatz eine limitierende Größe. Eine große Zahl verschiedener Studien dokumentriet das Auftreten von MP über den gesamten Globus. Meist sind die Studien aufgrund des großen analytischen Aufwands auf exemplarische, stichpunktartige Untersuchungen kleiner Umweltaliquoten und zahlenmäßig kleiner Probenumfänge begrenzt. Um die Verbreitung, die Eintragspfade und den Verbleib von MP in der Umwelt besser zu verstehen und effektive Vermeidungsstrategien abzuleiten, ist es jedoch notwendig, analytisch mehr Proben erfassen zu können. Bildgebende mikro-spektroskopische Methoden wie das Raman- und FTIR-Imaging ermöglichen eine zeitaufwendige, umfassende Charakterisierung kleiner Umweltaliquoten. Neben der Partikelanzahl sind zusätzlich Informationen zu Partikelgröße, Größenverteilung und Oberflächenmorphologie zugänglich. Chemische und thermische Extraktionsverfahren sind bereits deutlich schneller und können diese Informationen durch eine Massenbilanz vervollständigen. Die analysierbare Probenmenge ist jedoch auf Milligramm Mengen beschränkt. Wir schlagen daher vor, die Analyse von Proben auf MP durch ein vorangestelltes Screening mit der Nahinfrarot-Spektroskopie (NIRS) zur komplementieren. In diesem wird bereits eine erste Einschätzung über die Präsenz von MP in einer Probe gefällt und dadurch die wertvolle Messzeit anderer Methoden effizienter genutzt. NIR zur Analyse von Polymeren wird seit langem eingesetzt, jedoch bisher lediglich im Rahmen einer Studie zur Mikroplastikuntersuchung mittels Hyperspektraler Bildgebung beschrieben. Der NIR Spektralbereich findet sich zwischen dem sichtbaren Licht und dem mittleren Infrarot (MIR). MIR Spektren sind durch klar definierte Banden charakterisiert, welche mehrheitlich von den Grundschwingungen der Moleküle stammen. Die höheren Energien im nahen Infrarot regen hingegen Kombinations- und Oberschwingungen der Streck und Biegeschwingungen an. Die resultierenden Absorptionsbanden sind oft breit und relativ unspezifisch. Erst mit Hilfe einer computergestützten Datenauswertung lassen sich aus diesen Spektren nützliche Informationen gewinnen. Dies erklärt die steigende Popularität der NIR-Spektroskopie in der jüngeren Vergangenheit mit einem Schwerpunkt als prozessanalytische Methode. NIR Spektrometer für das industrielle Prozessmonitoring zeichnen sich durch eine kompakte und robuste Konstruktionsweise aus. Die verfügbaren faseroptischen Reflexionssonden eignen sich gut um pulverförmige Proben zu untersuchen. Der räumlich erfassbare Messbereich kann durch die Sondengeometrie variiert werden. Sind die untersuchten Partikel im Verhältnis zur abgetasteten Fläche klein, wird als spektrale Information die Summe der Absorption aller Partikel im Sichtfeld erfasst. Die Methode ist deshalb nicht für Detailuntersuchungen von MP geeignet, erlaubt es jedoch innerhalb weniger Minuten eine Einschätzung über das Vorkommen von Mikroplastik in einer Probe zu treffen. Exemplarisch wurden für diese Untersuchungen vier der am weitesten verbreiteten Kunststoffe Polyethylen (PE), Polyethylenterephthalat (PET), Polypropylen (PP) und Polystyrol (PS) gewählt. Aus den additivfreien Polymeren wurden nach einer Kryo-vermahlung und anschließender Siebung (< 125 µm) Modellproben generiert. Die Polymere wurden dafür zu einem Massenanteil von 1 % mit einem Standardboden (LUFA2.3, gesiebt < 125 µm) vermischt. Die Gesamtmenge von 1 g je Probe wurde in Aluminiumbehältern präpariert und 8 Messungen an unterschiedlichen, zufällig gewählten Positionen vorgenommen. Die erhaltenen Spektren wurden zur Kalibrierung chemometrischer Modelle genutzt. In einem hierarchischen Ansatz wurde anhand der NIR-Spektren eine Klassifizierung vorgenommen: 1. Bestimmung ob eine Probe MP enthält (Ja/Nein). 2. Identifikation der Polymere in der Probe. Eine aussagekräftige Klassifizierung beruht auf einer Vorbehandlung der Spektren. Hierdurch werden die Unterschiede zwischen den einzelnen Polymerbanden hervorgehoben. Die Eignung der so erstellten Modelle wurde anhand eines Referenzmaterials und am Beispiel von Realproben erfolgreich getestet. Dabei zeigte sich, dass nicht nur in den erstellten Polymer-Bodenmischungen, sondern auch in den Rückständen von fermentiertem Bioabfall und in Filterrückständen einer Waschmaschine, MP richtig erkannt wurde. Weiterhin zeigten Tests mit Mikroplastik-freien Bodenproben unterschiedlicher Herkunft, dass keine falsch-positive Resultate erzeugt wurden. Alle vier untersuchten Polymere, d.h. PE, PET, PS und PP mit einem Massenanteil von 1 % in einer Bodenmatrix werden auch bei einer gemischten Polymerzusammensetzung mit der NIR-Spektroskopie erkannt. Der kombinierte Einsatz von NIRS und Chemometrie ermöglicht die Entscheidung über ein potenzielles Vorkommen sowie die Zuordnung des Materials der enthaltenen Polymerpartikel für eine Massefraktion ≥ 1 % in einer (trockenen) Probenmenge von 1 g innerhalb von 10–15 min. Der zeitaufwendige Schritt der Methode liegt hier in der Erstellung geeigneter chemometrischer Modelle sowie deren Validierung. Wesentliche Voraussetzung ist dabei, dass bei der Kalibrierung die Varianz der zu erwartenden Partikel und der Matrix realistisch abgebildet wird. T2 - GDCh Jahrestagung der Wasserchemischen Gesellschaft CY - Papenburg, Ems, Germany DA - 07.05.2018 KW - Mikroplastik KW - Nahinfrarotspektroskopie KW - Chemometrie KW - Boden PY - 2018 AN - OPUS4-44887 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eitzen, L. T1 - Einfluss von Dispergiermitteln auf Polystyrol- Mikroplastikdispersionen N2 - Es wird Herstellung definierter Dispersionen mit Partikeln aus Polystyrol (PS) zur beschrieben:für die Simulation natürlicher Stabilisierung, die Untersuchung des Partikelverhaltens und die effizienteren Klassierung der Partikel durch Filtration. T2 - Wasser Tagung der GdCh CY - Papenburg, Germany DA - 07.05.2018 KW - Mikroplastik KW - Analytik KW - Modellmaterialien PY - 2018 AN - OPUS4-45032 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dittmann, Daniel T1 - Thermoanalytische Verfahren in der Umweltanalytik: Neue Methoden für die weitergehende Abwasserbehandlung mit Aktivkohle N2 - Motivation: > Zunehmender Einsatz von Pulveraktivkohle (PAK) zur Spurenstoffelimination in kommunalen Kläranlagen > Bisher keine analytische Methode zur Quantifizierung von PAK in Belebungsbecken, bzw. in Gegenwart von Belebtschlamm > Anwendung der Thermogravimetrischen Analyse (TGA) zur Feststoffcharakterisierung auf Umweltfragestellungen Ergebnisse: > Quantifizierung von PAK in Belebtschlamm ist möglich und kann über unterschiedliche zweistufige TGA-Methoden erfolgen > Zersetzungsgasanalyse zeigt veränderte und verzögerte Freisetzung aliphatischer Produkte des Belebtschlamms T2 - Wasser 2018 CY - Papenburg, Germany DA - 07.05.2018 KW - Thermogravimetrie KW - Belebtschlamm KW - Infrarotspektroskopie KW - Thermoanalyse KW - Pulveraktivkohle PY - 2018 AN - OPUS4-44974 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Büchele, Dominique T1 - Comparison between uni- and multivariate data analysis for the determination of nutrients in soils using XRF N2 - Aim of the Federal Institute for Materials Research and Testing (BAM) in the frame of I4S - “Intelligence for Soil” is the characterization of an X-ray fluorescence (XRF) based sensor for robust online-application of arable land.Fast soil mapping for agricultural purpose allows the site-specific optimized introduction of plant essential nutrients like S, K, Ca, and Fe. This is important given that the distribution of minor and trace elements varies widely. The non-destructive and contactless XRF is suitable for rapid in-situ analysis on the field due to minimal sample preparation and simultaneous multi-element analysis. Soils are already considered as a complex matrix due to their wide range of elements in different contents, especially light elements with low atomic numbers (Z<19). Problems by measuring soil samples also arise from heterogeneity of the sample and matrix effects. Large grain size distribution causes strong inhomogeneity and matrix effects occur through physical properties related to high concentration of main components. Matrix-specific calibration strategies for determination of total major and minor plant essential nutrients are particularly important regarding these difficulties. For accurate calibration, data treatment and evaluation must also be considered. Empirical univariate and multivariate data analysis were compared regarding their analytical figures of merit. Using principal component analysis (PCA) it was possible to classify German soils in different groups as sand, clay and silt. A calibration curve was obtained by partial least squares regression (PLSR) and the elemental content of German soils was predicted. Elemental distribution maps for different German arable lands were created and the results compared to reference measurements. The correlation between predicted values and reference values were in good agreement for most major and minor nutrients. T2 - BonaRes Conference CY - Berlin, Germany DA - 26.02.2018 KW - PLSR KW - XRF KW - Soil KW - PCA PY - 2018 AN - OPUS4-45007 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rühlmann, Madlen T1 - Determination of plant essential nutrients in soils using DP-LIBS N2 - In respect of an efficient cultivation of agricultural cropland, a site-specific fertility management is necessary. Therefore, affordable and extensive mapping methods are needed. The research projects I4S (intelligence for soil) has the goal to develop a system for this purpose. I4S is one of ten interdisciplinary research project associations of the innovation programme called BonaRes, which is funded by the German Federal Ministry of Education and Research (BMBF). The system includes a sensor platform, which contains different sensors, like XRF, VIS-NIR, Gamma and LIBS. The main task of LIBS measurements in this project is the real-time determination of the elemental contents of major and minor nutrients in soils, like calcium, magnesium, potassium. LIBS (laser-induced breakdown spectroscopy) is known as a fast and simultaneous multi-element analysis with little or no sample preparation. The main task of LIBS measurements in this project is the real-time determination of the elemental contents of nutrients in soils, like calcium, magnesium, potassium. For this purpose, a special setup has been designed. The sample uptake operates with the help of a rotatable sample plate which circulates with different velocities to simulate the application on the field. To provide a higher intensity and a better reproducibility of the obtained signal, a double-pulse Nd:YAG laser (1064 nm)was used. In order to minimize dust formation from the soil during the operation of the laser, a dust removal by suction has been integrated. When using relative methods such as LIBS, a suitable calibration curve is needed for absolute quantification. The complex matrix of soils, as well as the influence of moisture and grain size in soils makes the absolute quantification by LIBS challenging. To overcome these influences, chemometric methods were used. With the principal component analysis (PCA) a classification of soils into different soil types was performed and a calibration curve based on partial least squares regression (PLSR) was generated. With this calibration model’s elemental distribution maps for different German agricultural fields were created. T2 - ESAS CANSAS CY - Berlin, Germany DA - 20.03.2018 KW - LIBS KW - Soil KW - PCA KW - PLSR PY - 2018 AN - OPUS4-45008 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuschke, Christian T1 - international and German standards and guidelines for the design of trunnions of transport packages for radioactive materials N2 - Trunnion systems of packages for the transport of radioactive materials have to guarantee the safe handling of package during crane operations (lifting, tilting) and to secure package tie down to the transport vehicle, if the trunnions are used as attachment points during transport. The design of trunnions is based on IAEA Regulations SSR-6, the supporting Advisory Material SSG-26 and further appropriate technical standards and/or guidelines. For package approval procedures in Germany the guideline BAM GGR 012 has to be applied. If a package is handled inside a german nuclear power plant, the standard KTA 3905 has to be fulfilled additionally. In this paper the requirements of KTA 3905 concerning the trunnion systems as load attaching points (LAP) are discussed in connection with the recommendations in the guideline BAM-GGR 012 . This guideline is prepared at BAM Federal Institute for Materials Research and Testing for analysis and assessment of bolted lid and trunnion systems of Type B(U) transport packages. The quality assurance questions concerning trunnion systems are discussed as well. T2 - 11th International Conference on the Transport, Storage and Disposal of Radioactive Materials CY - London, UK DA - 15.05.2018 KW - Trunnion KW - Transport packages for radioactive materials PY - 2017 AN - OPUS4-45009 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oberpaul, M. A1 - Spohn, M. A1 - Fracowiak, J. A1 - Plarre, Rüdiger A1 - McMahon, Dino Peter A1 - Hammann, P. A1 - Vilcinskas, A. A1 - Gläser, J. T1 - Exploiting termite nest microbiomes for antibiotic discovery by using an ultra-high throughput Microfluidics/FACS driven pipeline combined with a microtiter plate based cultivation strategy N2 - Infections with multi-resistant Gram negative pathogens are a major threat to our health system. In order to serve the needs in antibiotics development we selected untapped bioresources and implemented high throughput approaches suitable for the discovery of strains producing antibiotics with anti-Gram negative activity. Our approaches rely on the hypothesis that Termite associated bacteria are likely to produce potent antibiotics to defend their hosts against entomopathogenic microorganisms. Termite nests and guts harbor suitable, highly diverse microbiomes in which bacterial taxa are present known to potentially produce natural compounds. In a first step the diversity of Coptotermes species nest microbiomes was assessed carefully by using 16S rDNA amplicon sequencing on the Illumina MiSeq platform and nest material was selected to retrieve viable cells by using Nycodenz density gradient centrifugation. In order to analyze the diversity of the culturable termite nest microbiome, bacterial cells were either distributed in 384-well plates (approach 1) or encapsulated in small spheric agarose beads by an high throughput microfluidics technique (approach 2). Cultures obtained from approach 1 were scaled-up in 96-well Duetz-systems for characterization of diversity and for rapid supernatant screening using the bioluminescence-labeled E. coli pFU166. The generated droplets of approach 2 simultaneously received a small population of GFP-tagged Gram negative screening cells and were sorted for low fluorescence using FACS. After elimination of redundancy we performed a fast scale-up of active strains. Implementation of this pipeline allows us to prioritize antibiotics producing strains in a ultra-high throughput fashion and by cultivation of broad diversity in our approches. T2 - Annual Conference of the Society for General and Applied Microbiology (VAAM) CY - Wolfsburg, Germany DA - 15.04.18 KW - Biotechnology KW - Termites KW - Anti-microbial effects PY - 2018 AN - OPUS4-44987 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mueller, Axel T1 - Analysing microplastics in samples of terrestrial systems N2 - The presence, fate and effects of microplastics (MP) in terrestrial systems are largely unknown. The few existing studies investigated either agricultural or industrial sites. Several techniques were used for analysis, primarly spectroscopic methods such as FTIR or Raman. Sample pretreatments like density separations are common to reduce matrix. A lack of harmonised and standardised sampling instructions for microplastic investigations in the terrestrial area was identified as particular critical, because different studies are barely comparable. The aim of the project is to develop a proposal for a harmonized procedure for sampling, sample preparation and the detection of microplastics in terrestrial matrices for total content determination. By detecting specific degradation products the thermal extraction desorption gas chromatography mass spectrometry (TED-GC-MS) allows a direct determination of mass content of MP in environmental samples. T2 - SETAC 2018 CY - Rome, Italy DA - 13.05.2018 KW - Microplastics KW - Soil sample KW - TED-GC-MS KW - Analysis PY - 2018 AN - OPUS4-44988 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Büchele, Dominique T1 - Comparison between uni- and multivariate data Analysis for the determination of nutrients in soils using XRF N2 - As part of the BonaRes research initiative funded by the German Federal Ministry of Education and Research (BMBF), strategies are being developed to use soil as a sustainable resource in the bioeconomy. The interdisciplinary subproject I4S - “Intelligence for soil” - is responsible for the development of an integrated system for site-specific management of soil fertility. For this purpose, a platform is constructed and various sensors are installed. Real-time data will be summarized in models and decision-making algorithms will be used to control fertilization and accordingly improve soil functions. This would allow investigations in close meshed dynamic grid and fast analysis of large areas to generate higher yields. This is important given that the distribution of minor and trace elements varies widely. Aim of the Federal Institute for Materials Research and Testing (BAM) in the frame of I4S is the characterization of an X-ray fluorescence (XRF) based sensor for robust online-analysis of arable land. The non-destructive and contactless XRF is suitable for rapid in-situ analysis on the field due to minimal sample preparation and simultaneous multi-element analysis. Soils are already considered as a complex matrix due to their wide range of elements in different contents, especially light elements with low atomic numbers (Z<19). Problems by measuring soil samples also arise from heterogeneity of the sample and matrix effects. Large grain size distribution causes strong inhomogeneity and matrix effects occur through physical properties related to high concentration of main components. Matrix-specific calibration strategies for determination of total major and minor plant essential nutrients are particularly important regarding these difficulties. For accurate calibration, data treatment and evaluation must also be considered. Univariate and multivariate data analysis were compared regarding their analytical figures of merit. Using principal component analysis (PCA) it was possible to classify German soils in different groups as sand, clay and silt. Calibration models were obtained by partial least squares regression (PLSR) and the content of macro- and micronutrients in German soils was predicted. Elemental distribution maps for different German arable lands were created and the results compared to reference measurements. The correlation between predicted values and reference values were in good agreement for most major and minor nutrients. T2 - ESAS/CANAS CY - Berlin, Germany DA - 20.03.2018 KW - Soil KW - XRF KW - PCA KW - PLSR PY - 2018 AN - OPUS4-45010 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rühlmann, Madlen T1 - Determination of plant essential nutrients in soils using DP-LIBS N2 - In respect of an efficient cultivation of agricultural cropland, a site-specific fertility management is necessary. Therefore, affordable and extensive mapping methods are needed. For this purpose, the research project I4S (intelligence for soil) has the goal to develop an integrated system. This system includes a sensor platform, which contains different sensors, like XRF, VIS-NIR, Gamma and LIBS. LIBS (laser-induced breakdown spectroscopy) is known as a fast and simultaneous multi-element analysis with little or no sample preparation. The main task of LIBS measurements in this project is the real time determination of the elemental contents of nutrients in soils, like calcium, magnesium, potassium. For this purpose, a special setup has been designed. The sample uptake operates with the help of a rotatable sample plate which circulates with different velocities to simulate the application on the field. To provide a higher intensity and a better reproducibility of the obtained signal, a double-pulse Nd:YAG laser (1064 nm) was used. In order to minimize dust formation from the soil during the operation of the laser, a dust removal by suction has been integrated.[1] When using relative methods such as LIBS, a suitable calibration curve is needed for absolute quantification. The complex matrix of soils, as well as the influence of moisture and grain size in soils makes the absolute quantification by LIBS challenging. To overcome these influences, chemometric methods were used. With the principal component analysis (PCA) a classification of soils into different soil types was performed and a calibration curve based on partial least squares regression (PLSR) was generated. With this calibration model’s elemental distribution maps for different German agricultural fields were created. T2 - Bonares Conference CY - Berlin, Germany DA - 26.02.2018 KW - LIBS KW - Soil KW - PCA KW - PLSR PY - 2018 AN - OPUS4-45011 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bandow, Nicole T1 - Leachiing tests - a useful tool for the environmental impact assessment of construction products? N2 - Construction products and waste materials used for construction can be in contact with the environment and may release potential harmful compounds. Information on the total content of these substances in the product is not sufficient to assess its envrionmental impact since it does not consider realistic exposure conditions.The impact of these compounds is often assessed by using the total content in the product. This estimation lacks realistic exposure conditions. Concerning the pathway to soil and groundwater by contact with rain or seepage water leaching tests, which were developed and standardized by the European Committee for Standardization, are available. While for secondary construction products and waste this investigation of the leaching behaviour is standard procedure and is already part of regulation in Germany (draft ordinance on reuse of mineral waste) and within Europe (landfill directive) the release from primary construction products got in the focus more recently. Several monitoring studies found unexpected high concentrations of substances used as herbicides and fungicides in surface water and stormwater originating from urban areas. As some of these compounds are even banned for the use in agricultural applications in Europe alternative sources as roof materials and façade coatings exposed to rain were suggested. Further field and laboratory tests confirmed construction products as sources of these substances in water. The aim of this presentation is to show exemplary results of existing leaching methods and underline the strength and weaknesses of the test system with selected examples from our work. We especially draw the attention to the research which is still needed to close the gap between the results of leaching experiments and the subsequent risk assessment of the products. T2 - SETAC Europe CY - Rome, Italy DA - 13.05.2018 KW - Leaching KW - DSLT KW - Construction products PY - 2018 AN - OPUS4-44949 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wollschläger, N. A1 - Nützmann, Kathrin T1 - What happens during S-corrosion in Fe13Cr in the early stage? N2 - Ferritic alloys containing Cr form Cr5S6 precipitates along grain boundaries in hot SO2 environment. Grain boundary precipitates may influence the steel’s mechanical behavior. Cr5S6 precipitates were reconstructed three-dimensionally using FIB tomography analysis to determine the volume, number, and penetration depth. The volume growth of Cr5S6 precipitates increased only for the initial aging time of 3 h but became constant after 6 h. The number of precipitates increased linearly. T2 - Meeting on Focused Ion Beams in Berlin - FIBiB2017 CY - Berlin, HZB Wannsee Campus, Germany DA - 06.11.2017 KW - Grain boundary corrosion KW - 3D tomography KW - Sulfidation PY - 2017 AN - OPUS4-45061 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Joschko, M. T1 - Relationship between soil structure and carbon dynamics in agricultural soils : potential for a farmer`s tool ? N2 - Soil structure, the spatial arrangement of soil elements, integrates a variety of drivers in agricultural soil (parent material, tillage, crop rotation, organic fertilizer, below ground biodiversity). It is related to almost all soil functions. Relationships between soil structure and the carbon sequestration potential of soil are known from the comparison of different land use systems (grassland vs. tilled soils ) and are expected to be a general phenomenon. Therefore , we expect soil structure assessed by modern non - destructive methods to be a valuable tool for the optimization of soil organic matter management in agricultural soils T2 - Soil organic matter management in agriculture – International Symposium CY - Brunswick, Germany DA - 29.05.2018 KW - Computed tomography KW - Carbon dynamics KW - Soil PY - 2018 AN - OPUS4-45068 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Szymoniak, Paulina T1 - Rigid amorphous fraction (RAF) in epoxy/Boehmite and epoxy/LDH nanocomposites N2 - The interphase between the inorganic filler and the polymer matrix is considered as one of the most important characteristics of inorganic/polymer nanocomposites. The segmental dynamics of this interphase is expected to be altered as compared to the pure matrix, which might percolate into the entire system. For instance, it was found that a so-called Rigid Amorphous Phase (RAF) is formed by adsorption of segments onto the nanoparticles yielding to its immobilization. The RAF is available from the decrease of the specific heat capacity Δcp in the glass transition region of the nanocomposites. Here, precise Temperature Modulated DSC (TMDSC) was employed to study Δcp of epoxy/Boehmite nanocomposites with different nanofiller concentrations. Surprisingly, the investigated system showed an increase of Δcp with increasing filler concentration up to 10 wt%. This implies an increased fraction of mobile segments, and is in accordance with the found decreased value of the glass transition temperature Tg. Although for higher filler contents Tg further slightly decreases, Δcp decreases in contrary, indicating a formation of RAF. This behavior was discussed as a competition of mobilization effects, due to an incomplete crosslinking reaction, and the formation of RAF. T2 - 15thLähnwitzseminar on Calorimetry 2018 CY - Rostock, Germany DA - 04.06.2018 KW - Nanocomposites KW - Rigid amorphous fraction KW - TMDSC KW - Boehmite PY - 2018 AN - OPUS4-45148 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Busch, I. A1 - Unger, Wolfgang T1 - Analytical and topographical Reference Material for the Nanoscale N2 - Reliable standards are required to support research and development as well as end-user in application. Appropriate standards have to fulfill three requirements: small uncertainty, easy to use and low overall costs of application. For calibration of microscopes at nanoscale and/or element analysis special requirements for standards are given, which are challenging in manufacture. T2 - Workshop on Reference Nanomaterials CY - Berlin, Germany DA - 14.05.2018 KW - XPS KW - Imaging KW - Reference material KW - NoStep Standards PY - 2018 AN - OPUS4-45156 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kämpf, K. T1 - OECD Test Guideline on particle size and particle size distribution of manufactured nanomaterials: simultaneous measurement of length and diameter of fibers N2 - The new OECD test guideline will address the following four main steps in the determination of the length and width distributions of fibers: sample preparation, image acquisition, data evaluation and uncertainty analysis. As the sample preparation has to be optimized for each material, general quality criteria will be given in the protocol. For full visibility of a fiber the appropriate resolution has to be chosen. In the data evaluation the length and diameter of each fiber will be determined concurrently to allow for application of different regulatory definitions. The quality of the results critically depends on the sample preparation as well as the data evaluation. In this step the classification rules have to be formulated and followed accurately in order to optimize reproducibility of the method. The SOP will be validated in an international round robin test, which is planned for 2018/2019. T2 - BAM-PTB-Workshop 2018 CY - Berlin, Germany DA - 14.05.2018 KW - Nano KW - Fibre KW - Fiber KW - OECD KW - Size distribution PY - 2018 AN - OPUS4-45107 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schwirn, K. T1 - OECD Test Guidelines development for chemicals safety assessment of nanomaterials N2 - The OECD test guidelines (TGs) for testing chemicals have been widely used for regulatory purposes all over the world since the establishment of the Mutual Acceptance of Data (MAD) principle in 1984. This MAD principle ensures that, if a chemical is tested under the Good Laboratory Practice (GLP) conditions accordingly to an OECD TG, the data should be accepted in all OECD countries. The TGs have been developed, harmonized, internationally validated (round robin tests) and adopted by OECD countries to be used for the physical-chemical characterisation, fate estimation, and hazard identification for risk assessment of various chemicals. In addition to the TGs, OECD Guidance Documents (GDs) usually provide guidance on how to use TGs and how to interpret the results. These GDs do not have to be fully experimentally validated, and hence they are not under MAD, but they are based on relevant published scientific research. But are the existing TGs and the related GDs applicable and adequate for the regulatory testing of nanomaterials? In general, it is accepted that most of the "endpoints" or more precisely measurement variables are applicable also for nanomaterials. However, for some endpoints new or amended TGs are needed. In addition, several GDs are needed to give more precise advice on the test performance in order to gain regulatory relevant data on nanomaterials. The poster will present the status quo on recent TGs and GDs development for nanomaterials at OECD level with relevance for physical-chemical characterisation. Emphasis will be given to the proposed OECD TG on particle size and size distribution for manufactured nanomaterials. The development of such a TG is of special importance as particle size and size distribution is considered as major information for nanomaterial identification and characterization. A reliable and reproducible characterisation of particle size and size distribution is also needed for chemicals risk assessment of nanomaterials, for instance to interpret and compare test results and - in future – to forecast interaction and effects of nanomaterials. The presented poster will illustrate the way from the idea for a new TG and new GD to an accepted OECD TG/GD. T2 - BAM-PTB Workshop 2018 CY - Berlin, Germany DA - 14.05.2018 KW - Nano KW - OECD KW - Nanomaterials KW - Test Guideline KW - Prüfrichtlinie PY - 2018 AN - OPUS4-45108 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - Calibration samples and the GUM-compliant determination of uncertainties in ellipsometry N2 - Ellipsometry is well known as a highly sensitive and reproducible surface analysis technique. However, in a context of metrological applications, the most important property of a measurement process is accuracy, relying on statistical precision, (reproducibility) and trueness (in an absolute sense versus a given standard). The latter is much more difficult to achieve. In this presentation, we discuss the possibility of establishing ellipsometry in a diverse metrological landscape by means of defining standard procedures and best practice methodologies for the measurement and for calibration purposes. The most important task of this approach is to determine the model-inherent uncertainty, originating from parameter coupling. We achieve this by means of sensitivity analysis of the parameters resulting from the fit process. We discuss the definition of reference materials by which accuracy can be made available for ellipsometry, passed along between ellipsometry laboratories and for other measurement techniques. The determination of uncertainty is presented in this work for a number of examples involving difficult analysis models employed for samples from different production environments. We present a standardization initiative with the goal to disseminate this work into an international standard alongside an inter-laboratory study comparing the results for complex samples gained by laboratories with different instrumentation. We also present the results gained within EURAMET projects focused on the metrology of materials with strong non-idealities used in photovoltaics and other energy technology. T2 - Workshop Ellipsometry 2018 CY - Chemnitz, Germany DA - 19.03.2018 KW - Ellipsometric metrology KW - Reference samples KW - Reference procedures KW - Standardization PY - 2018 AN - OPUS4-44674 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Guhl, Svetlana T1 - Process monitoring with online NMR spectroscopy – an enabler for Industrial Internet of Things (IIoT) N2 - Improvement in deep process understanding is a mandatory prerequisite for the application of modern concepts like Industrial Internet of Things (IIoT) or “Industrie 4.0”. This is particularly relevant in new process concepts such as intensified production in modularized plants. The direct hyphenation with online methods of process analytical technology (PAT) allows profound insights into the actual reactions within chemical and pharmaceutical production steps and provides necessary information for associated advanced control strategies. While the industrial application of online Raman spectroscopy has already been successfully demonstrated, low-field NMR spectroscopy is not yet adequately developed as an online method for use in process industry. The high Information content combined with the low calibration effort makes NMR spectroscopy a highly promising method for modern process automation with a high flexibility due to short set-up times and novel calibration concepts. This is a Major advantage especially within multi-purpose production plants, as well as for processes suffering from fluctuating quality of raw materials. The concept was evaluated on several example processes of pharmaceutical and chemical industry. The one presented here represents a stage of the synthesis of the industrially important solvent tetrahydrofuran consisting of the catalytic hydrogenation of 2-butine-1,4-diol was monitored. This reaction is proceeding via an intermediate product and suffers from competitive reaction paths. In this application, different spectroscopic methods were combined with the data obtained from classical process sensors, e.g., pressure, temperature, and flow transducers for the development of innovative control concepts. Such an analyzer for direct implementation in an industrial process environment based on a commercially available laboratory benchtop NMR instrument was recently developed within the EU project CONSENS (www.consens-spire.eu), challenging hyphenation to the production plant as well as compliance to all requirements of chemical industry such as explosion safety regulations (ATEX), robust automation, and modern, as well as classical communication interfaces such as OPC-UA or 4–20 mA communication. T2 - 12. Interdisziplinäres Doktorandenseminar CY - Berlin, Germany DA - 25.03.2018 KW - Hydration KW - Online NMR spectroscopy KW - Process analytical technology KW - Process monitoring KW - Process control PY - 2018 AN - OPUS4-44684 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stephan-Scherb, Christiane T1 - Real time observation of crystallization and growth of corrosion products by energy dispersive X-ray diffraction N2 - Ferritic-martensitic high temperature alloys are widely used as boiler tube and heat exchanger materials in combustion based power plants. All technologies have in common that the applied materials are exposed to different temperatures, process pressures and reactive atmospheres which lead to a change of the material properties and a further degradation of the material. To date corrosion analytics mainly proceeds via the use of various microscopic techniques and the analysis of the corrosion products after the reaction is completed. Comprehensive efforts have been made to study high temperature corrosion by the use of environmental SEM’s or in-situ TEM technologies. The here presented work will show a different approach to study high temperature gas corrosion in a multiple gas atmosphere by energy dispersive X-ray diffraction (EDXRD). For this technique high energetic white X-ray radiation (10-100 keV) was used as radiation source instead of conventional monochromatic radiation. It enables us to study crystallization procedures on short and medium time scales (1 min < t < 24 h) and the collection of Bragg-Signals of the phases of interest as a function of process time. Their occurrence can directly be correlated with thermodynamic and kinetic parameters. A special designed corrosion reactor was used to combine high temperature gas corrosion experiments with the collection of diffraction patter. The crystallization and reaction paths for oxide and sulfide formation was followed in-situ on Fe-Cr and Fe-Cr-Mn model alloys in a hot SO2 containing (T=650 °C) atmosphere. T2 - Gordon Research Conference on High Temperature Corrosion and Protection of Materials CY - New London, NH, USA DA - 09.07.2017 KW - Corrosion KW - In situ diffraction KW - Crystallization PY - 2017 AN - OPUS4-44717 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosner, Martin T1 - Intercomparison of delta26Mg Values in Mg Isotope RMs and Standards N2 - Accurate measurements of stable isotope abundance ratio variations are often reported using artifact based delta-scales, which rely on suitable isotopic reference materials (iRM) for their realization. For example, variations in the 26Mg/24Mg isotope abundance ratio in natural systems are typically reported as delta26Mg values that represents the relative difference between the 26Mg/24Mg ratio measured in a sample relative to its measurement preferably in an iRM. In the past, such delta26Mg measurements were referenced to NIST SRM 980, the initial zero of the delta26Mg scale. With the development of MC-ICPMS, the detection of small but measurable isotopic differences in different chips of SRM 980 became apparent. It was then replaced by a Mg solution (DSM3), the new zero of the delta26Mg scale. A potential replacement iRM for DSM3 has been developed, ERM-AE143. This iRM has also been measured for its absolute isotope amount ratios1,2 making it traceable to the SI. The results of an delta26Mg intercomparison experiment include the Mg iRMs SRM 980, IRMM-009, ERM-AE143, AE144, AE145 standards DSM3 and Cambridge-1. The intercomparison involved 5 expert laboratories, consisting of 3 national metrological institutes (BAM, NIST, PTB) and 2 scientific research laboratories (GFZ Potsdam, UBremen). The iRMs were measured relative to AE143 and cover a range of ≈5 ‰ in delta26Mg. IRMM-009 has the lowest delta26Mg value while DSM3 has the highest, spanning a range in values that covers natural Mg isotope variations. The 2SD reproducibilities of the individual values from the different laboratories range from 0.02 to 0.26 ‰. The mean delta26Mg values, calculated from the laboratory means however show 2SD reproducibilities varing between 0.025 and 0.093 ‰. Propagated measurement uncertainties suggest a standard uncertainty of about 0.1‰ for delta26Mg determinations. T2 - Goldschmidt 2017 CY - Paris, France DA - 13.08.2017 KW - Magnesium delta value KW - Isotope reference material KW - Intercalibration KW - Magnesium isotope ratio PY - 2017 AN - OPUS4-44639 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Thomas T1 - Chemical Analysis of Core-Shell Nanoparticles using ToF-SIMS and XPS N2 - The analysis of nanomaterials is currently an important task - especially in case of risk assessment – as the properties of these material class are not well understood. The rather high surface area of these objects renders their interactions significantly different to their corresponding bulk. Thus, the surface’s chemical composition must be investigated to get a better understanding and prediction of the nanomaterials’ behavior. ToF-SIMS and XPS have proven to be powerful tools to determine the general chemical composition. The superior surface sensitivity of ToF-SIMS furthermore allows us to study mainly the utmost atomic layer and thus gives us an idea of the interactions involved. Here, we present initial data on the analysis of Hyflon®-polystyrene core-shell nanoparticles which can be used as a model system due to the known preparation and a rather good chemical as well as physical separation of core and shell. Furthermore, principle component analysis (PCA) will be used to detect the influence of sample preparation and for a better separation of different samples. ToF-SIMS imaging is desired to be implemented for single particle detection as well. T2 - RSC-NPL Symposium: Nanoparticle concentration – critical needs and state-of-the-art measurement CY - London, UK DA - 24.04.2018 KW - XPS KW - ToF-SIMS KW - Nanoparticles PY - 2018 AN - OPUS4-44795 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schäferling, Michael T1 - Effects of solvent and excitation power on ratiometric upconversion luminescence based temperature sensing using NaYF4:Yb3+,Er3+ N2 - Thermal sensing using the luminescence intensity ratio of the green Er3+ emissions is affected by the solvent and requires steady-state conditions during the excitation. It is important to keep the excitation power at a moderate level or short exposure times to avoid local heating of aqueous samples. The solvent also determines whether the red emission of Er3+ is excited via a two- or three-photon process. T2 - 2nd conference on properties, design and applications of upconversion nanomaterials CY - Valencia, Spain DA - 04.04.2018 KW - Upconversion luminescence KW - Temperature sensing KW - Excitation path PY - 2018 AN - OPUS4-44819 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Batzorig, L. T1 - Certified reference material of total cyanide in soil/BAM-U 116/CGL 306 N2 - Due to their toxicity and widespread application for mining and industrial purposes, cyanides are ranking among the most important inorganic pollutants which should be tested and monitored not only in the aquatic environment, but also in soils and soil-like materials. Reference materials of soils with relevant contents of cyanide to ensure reliable test results of laboratories are rare today. New certified reference material (CRM) BAM-U116/CGL306 “Cyanide in soil” was produced within a framework of cooperation between Central Geological Laboratory (CGL) of Mongolia and Federal Institute for Materials Research and Testing (BAM) of Germany in 2013-2017. The CRM BAM-U116/CGL306 represents a mixture of a sandy soil collected from a contaminated former gasworks area in the Berlin region (Germany) and an unpolluted sandy soil from Nalaikh region (Mongolia). The bulk candidate material for this reference material was prepared at CGL CRM Laboratory exclusively destined to the preparation of reference materials and equipped with modern technical equipment. Homogeneity, stability and shelf life were studied in full compliance with ISO Guide 35. The CRM was evaluated as sufficiently homogeneous. Statistical evaluation of certification analysis was performed using software packages SoftCRM and ProLab Plus. Certified value of total cyanide of the CRM is 12.0 mg/kg and expanded uncertainty was assigned as 0.8 mg/kg. The intended purpose of this material is the verification of analytical results obtained for the mass fraction of total cyanide in soils and soil-like materials applying the standardized procedure ISO 11262:2011. As any reference material, it can also be used for routine performance checks (quality control charts) or validation studies. T2 - Geoanalysis 2018 CY - Sydney, Australia DA - 08.07.2018 KW - Certified reference material KW - Cyanide in soil KW - Total cyanide PY - 2018 AN - OPUS4-45417 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Almeida, Â. T1 - Pharmaceutical drugs under an ocean acidification scenario: the biochemical and transcriptomic effects on the clam Ruditapes philippinarum N2 - Carbamazepine (CBZ) and cetirizine (CTZ) are pharmaceutical drugs detected in the aquatic environment. However, the effects to marine invertebrates derived from the combination of these drugs with decreased pH conditions due to ocean acidification are poorly explored. This study investigated the biochemical parameters related to metabolic capacity and oxidative stress response and the transcription of genes related to the mode of action (MoA) of CBZ (1.0 μg/L) and CTZ (0.6 μg/L) in the clam Ruditapes philippinarum chronically exposed (28 days) to control (7.8) and low (7.5) pH conditions. The biochemical parameters applied were: the activity of electron transport system (indicator of organisms’ metabolic capacity); lipid peroxidation content (indicator of cell damage); total glutathione peroxidase activity (indicator of antioxidant defense). The transcription of genes related with drug neurotransmission and metabolism, cell defense and immunity and biomineralization was studied. No metabolic changes and oxidative stress was induced by the exposure to CBZ or CTZ at each pH level, but the transcription of several genes related with the MoA (neurotransmission, immunity and biomineralization) was altered by low pH, drug exposure and the combination of both stressors. In conclusion, it was shown that the interaction of drug exposure and low pH conditions can change bivalves’ sensitivity to drugs or alter drugs toxicity. T2 - 31st Congress of the New European Society for Comparative Physiology and Biochemistry ESCPB CY - Porto, Portugal DA - 09.09.2018 KW - Pharmaceutical Drugs KW - Climate Changes KW - Bivalves KW - Biomarkers KW - Transcriptomic PY - 2018 AN - OPUS4-45474 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Stephan T1 - New immunoassay for quantification of diclofenac in water samples N2 - Diclofenac (DCF) is a widely used drug against fever, inflammation, pain, and rheumatic diseases. An average of 70 % of the ingested diclofenac is excreted in the urine. Thus, 63 tons per year are introduced into the water cycle in Germany. Due to insufficient removal of diclofenac in wastewater treatment plants, residues of diclofenac can be found in surface water and sometimes in drinking water. In order to establish an immunoassay, an anti-DCF antibody was required. Some antibody developments have been reported, based on an immunogen resulting from direct coupling of diclofenac to proteins via the carboxylic function. Finally, we used a monoclonal antibody, clone F01G21. T2 - Tag der Biotechnologie der TU Berlin CY - Berlin, Germany DA - 13.07.2018 KW - Wasserproben KW - Arzneimittel KW - Antikörper KW - ELISA PY - 2018 AN - OPUS4-45475 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baldofski, Stefanie T1 - Hapten Design for the Production of Antibodies against Small Molecules N2 - Highly selective and sensitive antibodies are only available for a limited number of small molecules. Hence the development of new antibodies is important to exploit the full potential of immunoanalytics. Small molecules do not elicit an immune response in mammals unless conjugated to carrier molecules. The choice of the structures to be conjugated, called haptens, is critical for the antibody production. Here we present our Approach to produce antibodies for the plasticizer diisononyl 1,2-cyclehexane-dicarboxylic acid (DINCH) and di-2-ethylhexyl terephthalate (DEHT) as well as the bile acid isolithocholic acid (ILA). T2 - Tag der Biotechnologie der TU Berlin CY - Berlin, Germany DA - 13.07.2018 KW - Antikörper KW - ELISAS KW - Immunoassay KW - Phthalate KW - Weichmacher KW - DINCH KW - DEHT KW - Isolithocholsäure KW - Isolithocholic Acid PY - 2018 AN - OPUS4-45476 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckmann, Jörg T1 - THz-TDS-SAFT for the detection of inherent discontinuities in dielectric materials N2 - X-ray computed tomography (CT) model holds only for THz-TDS reconstruction if minor refraction index differences between the inhomogeneities and the surrounding material matrix exist. A Time Domain SAFT algorithm has been developed to overcome the restrictions. THz time domain measurement on representative sample sets with inherent artefacts were performed to use them for the Image reconstructions. The results will be presented and compared with optical surface images of the used test objects to evaluate the SAFT algorithm in relation to the reconstruction quality. T2 - 42nd International Conference on Infrared, Millimeter and THz waves CY - Cancun, Mexico DA - 27.08.2017 KW - THz-time-domain spectroscopy KW - SAFT KW - Tomography PY - 2017 AN - OPUS4-42034 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Barnefske, Lena T1 - Self-healing silicone rubber for F-POF partial discharge sensors in HV cable accessories N2 - To avoid a catastrophic failure of insulation in high-voltage (HV) applications, a monitoring of partial discharges (PD) is necessary. Fluorescently labelled polymer optical fibres (F-POF) offer an electrically passive method for PD detection in HV facilities. F-POF could be embedded into HV cable insulation material, which are usually made of silicone rubber. Due to the difficult accessibility of HV cable accessories, a self-healing silicone rubber, based on incorporated capsules, with prolonged service life after PD detection represents an attractive material design for HV electrical insulation. T2 - 26th International Conference on Plastic Optical Fibres CY - Aveiro, Portugal DA - 13.09.2017 KW - Fluorescent polymer optical fibres KW - Partial discharge detection KW - High voltage cable accessories KW - Self-healing KW - Silicone rubber PY - 2017 AN - OPUS4-42511 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Donsky, I. S. T1 - 2D nanomaterials with switchable pathogen binding N2 - Graphene derivatives have shown great promise in the field of pathogen binding and sensing. Due to their diverse applications, they show a variety of activities that range from bacterial adhesion to bacterial resistance. Therefore, domination of the graphene-pathogen interactions is highly relevant for producing 2D platforms with the desired applications. In order to gain control over the interactions between graphene and biosystems, mechanisms should be fully understood. The surface functionality of graphene is one of the most important factors that dominates its interactions with biosystems and pathogens. Covalent functionalization is a robust method through which functionality, chemical structure, and subsequently physicochemical properties of graphene are abundantly manipulated. A critical issue for preparing graphene-based 2D materials with a defined surface structure, however, is controlling the functionalization in terms of number, position, and type of functional groups. T2 - 9th Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 13.12.2017 KW - Graphene KW - Functionalization KW - XPS KW - C Kedge NEXAFS PY - 2017 AN - OPUS4-43456 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Anja T1 - Quantitative chemical depth-profiling by synchrotron-radiation-XPS: Investigation of SrF2-CaF2 core-shell nanoparticles N2 - SrF2 nanoparticles can be doped with trivalent earth metal ions such as Eu3+ and Tb3+ to generate materials exhibiting an intensive red or green fluorescence. A CaF2 shell increases intensity, fluorescence lifetie and quantum yield. The chemical composition of the nanoparticle core-shell region is investigated by XPS at different excitation energies corresponding to different information depths. T2 - Ninth Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 13.12.2017 KW - Core-shell nanoparticles KW - Synchrotron-XPS KW - Depth-profiling PY - 2017 N1 - Geburtsname von Müller, Anja: Hermanns, A. - Birth name of Müller, Anja: Hermanns, A. AN - OPUS4-43464 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. A1 - Hüllmann, Dino T1 - A low-cost cable-suspended parallel manipulator for testing 3D olfaction algorithms N2 - Cable-suspended parallel manipulators have been a topic of research for multiple decades and called special attention in the fields of simulations. However, they are also well-suited for the simple evaluation of aerial-based mobile robot olfaction (MRO) algorithms, such as gas source localization and gas distribution mapping. Based on an open source framework for 3D printers, we designed a low-cost underconstrained, cable-suspended parallel manipulator. Computations are carried out purely on an Atmel ATmega2560 microcontroller. T2 - 33rd Danubia- Adria Symposium on Advances in Experimental Mechanics CY - Trieste, Italy DA - 19.09.2017 KW - Cable-suspended parallel manipulator KW - 3D KW - Mobile robot olfaction PY - 2017 AN - OPUS4-42317 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stajanca, Pavol T1 - Post-fabrication cladding doping of commercial PMMA polymer optical fiber N2 - Possibility of post-fabrication doping of commercial PMMA fibers using well-known solution doping technique is presented. The cladding of 1 mm PMMA fiber is doped with Rhodamine B with the help of methanol-mediated diffusion of the dye molecules into the fiber material. Doping of the fiber core was not possible even at extended doping times. The proposed method represents rather simple and cheap way for preparing custom cladding-doped POFs with high flexibility of dopant choice and fiber length. Produced cladding-doped fibers have potential for various sensing or lighting applications. T2 - 26th International Conference on Plastic Optical Fibres (POF 2017) CY - Aveiro, Portugal DA - 13.09.2017 KW - Polymer optical fibers KW - Fluorescent dyes KW - Solution doping KW - Polymethyl methacrylate PY - 2017 AN - OPUS4-42321 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ickert, Stefanie T1 - Collision Specific Fragmentation of Oligonucleotides in Tandem Mass Spectrometry N2 - Tandem MS experiments allow the fast acquisition of spectral datasets with enormous size and unprecedented content of information. The most commonly used method is undoubtedly collision induced dissociation (CID). The relatively young technical adaptation of CID to modern day Orbitrap experiments needs a higher confinement voltage and has accordingly been named higher-energy collisional dissociation HCD. Despite the name the absolute value of transferred energy per collision in HCD is lower than in CID. Since for many proteins CID and HCD result in comparable fragmentation patterns the two techniques are often treated as interchangeable. This approach is, however, not without pitfalls as other classes of biomolecules often exhibit strongly pronounced fragmentation specificity. As an example, MS/MS experiments on several 4-mer oligonucleotides were conducted employing both collision methods and the results were thoroughly compared. It is apparent that not only the total fragment yield but also the identity of the observed fragments differ significantly between the two methods. T2 - Jahrestagung der Deutschen Gesellschaft für Massenspektrometrie DGMS CY - Kiel, Germany DA - 05.03.2017 KW - Tandem MS KW - DNA KW - Mass Spectrometry PY - 2017 AN - OPUS4-42328 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ickert, Stefanie T1 - Collision Induced Dissociation of DNA Oligonucleotides Studied by Tandem Mass Spectrometry and Ion Mobility N2 - Multiply negatively charged DNA oligonucleotides of small sizes (n=15-40) have been subjected to a comprehensive tandem mass spectrometric study (MS/MS). Collision induced dissociation (CID) mass spectrometry (MS) was applied as a tool to break down isolated DNA oligonucleotides with a defined number of charges. Various lenghts and sequences were analyzed and all of them showed a comparable direct correlation regarding the threshold collision energy for fragmentation and dependence on number of charges on the precursor ions. It was also revealed that the increase in charges and thus Coulomb repulsion results in the transition from a folded, compact form to an elongated structure of the precursor ions. T2 - Jahrestagung der Deutschen Gesellschaft für Massenspektrometrie DGMS CY - Hamburg, Germany DA - 28.02.2016 KW - Ion Mobility KW - DNA KW - Mass Spectrometry PY - 2016 AN - OPUS4-42329 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ickert, Stefanie T1 - DNA Oligonucleotide Fragmentation in Tandem Mass Spectrometry Experiments N2 - Multiply negatively charged DNA oligonucleotides of small sizes (n=15-40 bases) have been subjected to a comprehensive tandem mass spectrometric study (MS/MS). Collision induced dissociation (CID) mass spectrometry (MS) was applied as a tool to break down isolated DNA oligonucleotides with a defined number of charges. Various lenghts and sequences were analyzed unravelling a comparable direct correlation between the threshold collision energy for fragmentation and the charge-per-base density in the precusor ion. It was also revealed that the increase in charges and thus Coulomb repulsion results in the transition from a folded, compact form to an elongated structure of the precusor ions. T2 - International Mass Spectrometry Conference IMSC CY - Toronto, Canada DA - 20.08.2016 KW - Mass Spectrometry KW - DNA KW - Tandem MS PY - 2016 AN - OPUS4-42330 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Designing a sustainable European centre for risk management and safe innovation in nanomaterials & nanotechnologies (EC4SafeNano) N2 - A central challenge to ensure the sustainable production and use of nanotechnologies is to understand the risks for environment, health and safety associated with this technology and resulting materials and products, and to identify and implement practical strategies to minimize these risks. Knowledge about nanotechnology-enabled processes and products and related environment, health and safety issues is growing rapidly, achieved through numerous European or national R&D programs over the last decade, but effective use of this knowledge for risk management by market actors is lagging behind. The EC4SafeNano initiative (www.EC4SafeNano.eu) is an ongoing effort to build a European Centre for Risk Management and Safe Innovation in Nanomaterials and Nanotechnologies. EC4SafeNano aims to bridge the gap between scientific knowledge on hazard and risk, and ‘fit-for-purpose’ risk management tools and strategies supported by measurement and control methods. The consortium comprises 15 partners (INERIS (coordinator), EU-VRi, TNO, BAM, FIOH, VITO, SP, DEMOKRITOS, TECNALIA, Health and Safety Executive, NRCWE, Paris Lodron University Salzburg, Université Libre de Bruxelles, University of Birmingham and ENEA) from 11 European Member States with significant expertise on risk assessment and management, who already provide knowledge and technical services to public and private organizations, to industry and to public authorities and regulatory bodies. The overall objective of the EC4SafeNano project is to develop a distributed Centre of European Organisations offering services for Risk Management and Safe Innovation for Nanomaterials & Nanotechnologies. The Centre will be structured as a hub-based network of organizations managed by a core group of public-oriented bodies providing risk management and safe innovation support to all stakeholders. It will be operated with the support of Associated Partners so as to expand its capabilities, resources and services. It will interact with existing platforms and centres of excellence in nanosafety and foster the organization or development of national hubs mirroring the European hub. The Centre will seek financial support from stakeholders and service users to sustain the services in the longer term. The operational objectives of the project involve understanding and mapping the needs of the various stakeholders (private and public). It will identify the resources and capabilities and develop a range of harmonized services required to meet these needs. The construction of the centre will include putting in place and implementing processes to deliver and update services, to test and benchmark services, to evaluate the governance of the Centre, and developing a business plan to ensure self-sufficiency of the Centre beyond the project lifetime. A cornerstone of the project is to build a community for risk management and safe innovation for nanotechnology. Interested persons or organisations are invited to join this initiative as registered stakeholders or Associated Partners, to engage in focus networks and to help shape the future Centre. The poster will present the EC4SafeNano initiative and will detail the role of registered stakeholders and Associated Partners. T2 - UBA Scientific Stakeholder Meeting on Nanomaterials in the Environment CY - Dessau, Germany DA - 10.10.2017 KW - Risk management KW - Nanomaterials KW - Nanotechnologies PY - 2017 AN - OPUS4-42788 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosemann, Paul T1 - Einfluss der Schweißnaht-Nachbehandlung auf die Korrosionsbeständigkeit von nichtrostenden Duplexstählen N2 - Der Duplexstahl 1.4062 (X2CrNiN22-2) hat sich im Bauwesen als Werkstoffalternative zu den nichtrostenden Austeniten etabliert. Die Korrosionsbeständigkeit von Schweißverbindungen wird, neben dem Grundwerkstoff, dem Schweißzusatzwerkstoff und dem Schweißverfahren, auch sehr stark von der Oberflächennachbehandlung der Schweißnaht beeinflusst. Je nach zukünftigem Anwendungsbereich und geforderter Optik sowie Korrosionsbeständigkeit wird der Schweißnahtbereich anschließend geschliffen, gebeizt, elektropoliert, oder gestrahlt, um die beim Schweißen entstehenden Zunderschicht zu entfernen. Gestrahlte Oberfläche sind in der industriellen Praxis häufig anzutreffen, da sie deutlich einfacher und kostengünstiger herzustellen sind als gebeizte oder elektropolierte Oberflächen. Die Auswahl des Strahlmittels bestimmt auch die Prozesskosten, wobei das Strahlen mit Korund effektiver als das Strahlen mit Glasperlen ist. In den letzten Jahren wurden bei nichtrostenden Stählen korrosionsanfällige Oberflächen beobachtet, wenn diese mit Korund geschliffen wurden. Daher wird nun auch beim Strahlen kritisch hinterfragt, ob das Strahlmittel die Korrosionsbeständigkeit verändert. Diese Fragestellung wird beantwortet indem geschliffene, gebeizte, mit Korund gestrahlte und mit Glasperlen gestrahlte Schweißverbindungen vergleichend untersucht werden. Die Ergebnisse der REM-Untersuchungen von den Strahlmitteln und den gestrahlten Oberflächen werden dazu mit den Ergebnissen verschiedener Korrosionsuntersuchungen (KorroPad-Indikatortest, Potentialmessungen und Bestimmung der kritischen Lochkorrosionspotentiale) korreliert und vorgestellt. T2 - Werkstoffwoche 2017 CY - Dresden, Germany DA - 27.09.2017 KW - Duplexstahl KW - Korrosion KW - Nichtrostender Stahl KW - Oberflächenbearbeitung KW - Schweißen KW - Strahlen PY - 2017 AN - OPUS4-42830 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Babutzka, Martin T1 - Einfluss von Korundschleifprozessen auf die Korrosionsbeständigkeit nichtrostender Stähle N2 - Das Poster stellt aktuelle Eregbnisse des AiF-Vorhabens 18823 N/1 zum Einfluss von Schleifprozessen auf die Korrosionsbeständigkeit nichtrostender Stähle vor. T2 - Jahrestagung 2017 der GfKORR CY - Frankfurt a. M., Germany DA - 07.11.2017 KW - Korrosion KW - Corrosion KW - Korundschleifen KW - Corundum grinding KW - Nichtrostende Stähle KW - Stainless Steels PY - 2017 AN - OPUS4-42773 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Thomas T1 - Coupled molecular switching processes in ordered mono- and multilayers of stimuli-responsive rotaxanes on gold surfaces N2 - Interfaces provide the structural basis for function as, for example, encountered in nature in the membrane-embedded photosystem or in technology in solar cells. Synthetic functional multilayers of molecules cooperating in a coupled manner can be fabricated on surfaces through layer-by-layer self-assembly. Ordered arrays of stimuli-responsive rotaxanes undergoing well-controlled axle shuttling are excellent candidates for coupled mechanical motion. Such stimuli-responsive surfaces may help integrating synthetic molecular machines in larger systems exhibiting even macroscopic effects or generating mechanical work from chemical energy through cooperative action. The present work demonstrates the successful deposition of ordered mono- and multilayers of chemically switchable rotaxanes on gold surfaces. For the first time, rotaxane mono- and multilayers are shown to reversibly switch in a coupled manner between two ordered states as revealed by linear dichroism effects in angle-resolved NEXAFS spectra. Such a concerted switching process is observed only when the surfaces are well packed, while less densely packed surfaces lacking lateral order do not exhibit such effects. T2 - SupraChem 2015 CY - Berlin, Germany DA - 22.02.2015 KW - NEXAFS KW - Rotaxanes KW - Molecular machines KW - XPS KW - ToF-SIMS KW - AFM PY - 2015 AN - OPUS4-42800 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosner, M. T1 - Intercomparison of d26Mg Values in Mg Isotope RMs and Standards N2 - Accurate measurements of stable isotope abundance ratio variations are often reported using artifact based delta-scales, which rely on suitable isotopic reference materials (iRM) for their realization. For example, variations in the 26Mg/24Mg isotope abundance ratio in natural systems are typically reported as delta26Mg values that represents the relative difference between the 26Mg/24Mg ratio measured in a sample relative to its measurement preferably in an iRM. In the past, such delta26Mg measurements were referenced to NIST SRM 980, the initial zero of the delta26Mg scale. With the development of MC-ICPMS, the detection of small but measurable isotopic differences in different chips of SRM 980 became apparent. It was then replaced by a Mg solution (DSM3), the new zero of the delta26Mg scale. A potential replacement iRM for DSM3 has been developed, ERM-AE143. This iRM has also been measured for its absolute isotope amount ratios1,2 making it traceable to the SI. The results of a delta26Mg intercomparison experiment include the Mg iRMs SRM 980, IRMM-009, ERM-AE143, AE144, AE145 standards DSM3 and Cambridge-1. The intercomparison involved 5 expert laboratories, consisting of 3 national metrological institutes (BAM, NIST, PTB) and 2 scientific research laboratories (GFZ Potsdam, UBremen). The iRMs were measured relative to AE143 and cover a range of ≈5 ‰ in delta26Mg. IRMM-009 has the lowest delta26Mg value while DSM3 has the highest, spanning a range in values that covers natural Mg isotope variations. The 2SD reproducibilities of the individual values from the different laboratories range from 0.02 to 0.26 ‰. The mean delta26Mg values, calculated from the laboratory means however show 2SD reproducibilities varing between 0.025 and 0.093 ‰. Propagated measurement uncertainties suggest a standard uncertainty of about 0.1‰ for delta26Mg determinations. 1 JAAS, 2015, 31,179; 2JAAS, 2016, 31, 1440 T2 - Goldschmidt Conference 2017 CY - Paris, France DA - 13.08.2017 KW - Iisotope reference materials KW - Delta values KW - Magnesium isotope PY - 2017 AN - OPUS4-42742 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Thomas T1 - NEXAFS and XPS investigations of a dual switchable rotaxane multilayer N2 - A multilayer consisting of two different rotaxanes was investigated with different analytical methods. The rotaxanes can be switched with two different stimuli - chemical and photochemical. XPS indicates that our layer-by-layer approach worked and a layer growth with every deposition step is present. NEXAFS showed that both stimuli cause an increase of the multilayer's preferential orientation. T2 - BESSY User Meeting CY - Berlin, Germany DA - 13.12.2017 KW - NEXAFS KW - XPS KW - Rotaxanes PY - 2017 AN - OPUS4-43616 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - van Wasen, Sebastian T1 - Airborne laser-spark ion source for direct microfluidic coupling N2 - The development and improvement of new ionization techniques for mass spectrometry often requires dedicated, specific sampling approaches. Recently, a novel ionization scheme for ambient MS has been introduced based on a quasi-continuous laser-induced plasma, which was ignited directly before the MS inlet. This setup combines the general advantages of ambient ionization, provides electro neutrality, sufficient duty cycle and a ubiquitous plasma medium. A high repetition rate DPSS laser (Conqueror 3-LAMBDA, Nd:YVO4, 1 - 500 kHz, average output power: 12 W at 50 kHz, Compact Laser Solutions GmbH, Germany) and the corresponding optomechanical system were installed on an optical breadboard above the inlet of a LCQ DecaXP ion trap mass spectrometer. The quasi-continuous airborne plasma was ignited inside the sprayed sample in front of the inlet via focused laser irradiation. The introduction of liquid samples into laser-induced plasmas requires higher plasma power during solvent evaporation as compared to gaseous samples. This increased demand was approached via a two-fold strategy: Firstly, an alternative, more powerful, laser plasma driven by the fundamental instead of the second harmonic wavelength was implemented, which provided a 10-fold increase of signal intensity, while maintaining the same reagent ion pattern as the previous plasma. Protonated water clusters [(H2O]nH]+, NH4+ as well as charge transfer promoting ion O2+, dominated the reagent ion mass spectrum. Secondly, a miniaturized nebulizer was used to minimize the size of the plasma quenching solvent droplets. The result of these improvements was a new and very stable ion source for direct microfluidic coupling. A variety of samples demonstrated the performance of the ion source. A laser-driven plasma was shown to be a powerful ion source for gaseous and solid samples. For the first time, liquid samples were examined using the novel source. In addition to demonstrating an improved strategy for igniting the laser plasma, this contribution also covers the miniaturization of the spray source for enhanced ionization, while minimizing sample consumption via a microfluidic spray systems. T2 - International Mass Spectrometry Conference 2018 CY - Florence, Italy DA - 26.08.2018 KW - Airborne KW - Laser-spark KW - Laser-induced plasma KW - Microfluidic KW - Mass Spectrometry PY - 2018 AN - OPUS4-45839 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Timofeev, Juri T1 - Gesteuerte Risserzeugung in Stahlbeton zur Qualifizierung von ZfPBau-Anwendungen N2 - Die Zerstörungsfreie Prüfung im Bauwesen (ZfPBau) liefert ergänzende Informationen für die Planung von Ertüchtigungsmaßnahmen an Bauwerken. Die ZfPBau bzw. die Prüflösungen müssen zur Validierung an bestimmten Vergleichskörpern untereinander verglichen werden. Risse in Stahlbeton sind nicht notwendigerweise ein Schaden, in DIN EN 1992-1-1 werden etwa nur Risse mit einer Rissbreite größer 0,2 mm erfasst. Risse können aber ein Hinweis auf statische Probleme sein oder einen Schadensprozess fördern, etwa die Depassivierung der Bewehrung durch die beschleunigte Diffusion von Kohlendioxid. Deshalb ist die Bestimmung der Risstiefe und des Rissverlaufs für die Dauerhaftigkeitsabschätzung eines Bauwerks von Interesse. Die Vergleichbarkeit von ZfPBau-Verfahren zur Charakterisierung von Rissen in Stahlbeton hängt wesentlich davon ab, dass die untersuchten Risse ein vergleichbares Prüfproblem darstellen. Risse in Stahlbeton werden charakterisiert durch die Rissbreite, die Risstiefe, den Rissverlauf und die Lage bzw. Orientierung zur Oberfläche. Es muss wegen der Vielzahl von Schadensbildern eine Prioritätensetzung und Fokussierung auf besonders praxisrelevante Fälle vorgenommen werden. Dazu zählen z.B. bewehrungskreuzende und oberflächenoffene Risse, die für die Tragfähigkeit einer Konstruktion relevant sein können. Eine ausgewählte Prüfaufgabe ist dann die Detektion von Rissen senkrecht zur Oberfläche und die Bestimmung der Risstiefe. Der Sprengmörtel „Betonamit“, dessen Wirkung auf seiner extremen Expansionsfähigkeit beruht, wird zur Risserzeugung in gezielt angeordnete Bohrlöcher gefüllt. Wichtig bei der Erzeugung von Rissen ist die Bohrlochparametervariation zur gezielten Risssteuerung. Es werden der Durchmesser, die Tiefe, die Füllhöhe und die Anordnung der Fülllöcher variiert. Die Risse entstehen im Wesentlichen in Abhängigkeit vom Volumen des eingefüllten Sprengmittels. Der Nachweis der Risstiefen erfolgte zerstörend, d.h. durch Sägen des Vergleichskörpers und Ausmessen der Risse. Das Poster stellt die Arbeitsschritte, die erzeugten Risse und die statistische Auswertung dar. Ein Vergleichsversuch mit internationaler Beteiligung hat begonnen mit der Zielsetzung die Risserzeugung in unterschiedlichen Umgebungen zu vergleichen. T2 - Bauwerksdiagnose 2018 CY - Berlin, Germany DA - 15.02.2018 KW - Zerstörungsfreie Prüfung von Stahlbeton KW - Risse KW - Vergleichskörper PY - 2018 UR - https://www.bauwerksdiagnose2018.de/Portals/bauwerksdiagnose2018/P/p8.pdf AN - OPUS4-45738 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dieck, S. A1 - Ecke, M. A1 - Fritsch, S. A1 - Rosemann, Paul A1 - Wagner, M. A1 - Halle, T. T1 - SD effect in martensitic stainless steel under Q&P heat treatment condition N2 - The quenching and partitioning (Q&P) heat treatment enables a higher deformability of high strength martensitic steels. The Q&P heat treatment was applied on the martensitic stainless steel 1.4034 (X46Cr13) to study the influence of partitioning time. Therefore, extensive characterizations of the mechanical properties, focussing on the materials behaviour under different mechanical load scenarios, were performed. A comprehensive analysis of the microstructural evolution was per-formed for different heat treatment and mechanical loading states. A complete solution of chromium carbides was detected to be a first requirement for successful Q&P heat treatment. The comparison of common quenching and tempering with the Q&P heat treatment verifies the extensively enhanced materials strength whereat the formability is still acceptable. The microstructural reason was detected to be an increasing aus-tenite fraction due to austenite reversion at subgrain boundaries of martensite besides the stabilising of retained austenite. Further a distinctive strength differential effect was observed. T2 - 11th European Symposium on Martensitic Transformations CY - Metz, France DA - 27.08.2018 KW - Martensitic stainless steels KW - Heat treatment KW - EBSD KW - Quenching and partitioning KW - TRIP PY - 2018 AN - OPUS4-45803 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulte, Petra T1 - Kritische Bewertung der Prüfergebnisse in chemikalienrechtlichen Verfahren: Wie agiert die Behörde? Welche Folgen haben die Ergebnisse für die Rechtsetzung? N2 - Mit nicht-konformen oder schlecht dokumentierten Prüfergebnissen können weder Behörden noch Unternehmen etwas anfangen. Belastbare und eindeutige Informationen aus den Registrierungsdossiers sind entscheidend, damit industrielle und gewerbliche Verwender der Stoffe das Gefahrenpotenzial einschätzen und ggf. Maßnahmen zum Schutz von Menschen und Umwelt treffen können. Darüber hinaus benötigen die Behörden verlässliche Daten aus den Registrierungen, um ihrer Verantwortung bei der Identifizierung regulierungsbedürftiger Stoffe nachkommen zu können. T2 - Behörden-Erfahrungsaustausch CY - Berlin, Germany DA - 04.06.2018 KW - Prüfmethode KW - Einstufung KW - REACH KW - CLP KW - IUCLID KW - ECHA KW - OECD PY - 2018 AN - OPUS4-45808 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Martin T1 - Wie sicher sind Labortests - Die Bedeutung von Ringversuchen zur Methodenvalidierung am Beispiel der Bestimmung des Selbstentzündungsverhaltens großer Feststoffschüttungen N2 - Für die Klassifizierung sowie die sichere Handhabung und Nutzung von Chemikalien und anderen Stoffen wurden spezielle standardisierte Testmethoden entwickelt, die weltweit zum Einsatz kommen. Die Ableitung von Sicherheitsmaßnahmen durch Experten erfordert, dass aus diesen Untersuchungen verlässliche Daten gewonnen werden. Ringversuche sind ein wesentliches Element bei der Methodenentwicklung (-validierung) und für die Qualitätssicherung von Laboratorien. Die Testmethode DIN EN 15188:2007 dient der Bestimmung des Selbstentzündungsverhaltens von Schüttgütern und Stäuben. Experimentelle Grundlage für die Beschreibung des Selbstentzündungsverhaltens eines bestimmten Materials ist die Bestimmung der Selbstentzündungstemperaturen (TSE) von Proben verschiedener Größen mit Hilfe isoperiboler Warmlagerungsversuche. Die so ermittelten Versuchsdaten ergeben die Abhängigkeit der Selbstentzündungstemperaturen vom Lagervolumen. Zweck einer schrittweise aufgebauten Serie von Ringversuchen und internen Labortests war die Identifizierung von Schwächen der bestehenden Methode bzw. von in der Laborpraxis auftretenden Mängeln bei der Anwendung der Methode, die Validierung der modifizierten und verbesserten Methode sowie die Bestimmung einer allgemeingültigen (Mess-)Unsicherheit dieser modifizierten Methode. T2 - Behörden-Erfahrungsaustausch CY - Berlin, Germany DA - 04.06.2018 KW - Selbstentzündung KW - Methodenvalidierung KW - Messunsicherheit KW - Ringversuch PY - 2018 AN - OPUS4-45814 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Saatz, Jessica T1 - Nanocrystals as labeling reagents for bioimaging by LA-ICP-MS N2 - Imaging of elemental distributions in single cell assays as well as tissue sections can be performed by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). This powerful technique offers precise spatially resolved measurements at trace and ultratrace levels and has been established as an excellent tool to answer analytical, biological and biomedical questions. To date, mass cytometry is already able to simultaneously detect up to 40 cellular targets due to conjugation of isotopically pure lanthanides to affinity binders, e.g. antibodies. To further enhance the ability of multiparametric analysis to more than 100 analytes at once, we investigated lanthanide nanocrystals as new, highly sensitive metal tags for identification of targets in clinical cell assays and tissue samples. Multiparametric analysis will be possible by encoding the lanthanide composition of nanocrystals associated to the affinity binders. Nanocrystals showed remarkable potential for sensitive detection in MS due to high stability and signal amplification compared to e.g. polymer tags, carrying fewer metal atoms. Furthermore, the nanocrystals allow multimodal imaging due fluorescence of Eu3+ as well as contrast enhancing properties of Gd3+ in magnetic resonance imaging. Synthesis of functionalized lanthanide nanocrystals for further bioconjugation was performed with high reproducibility and monodisperse size distribution. For proof of principle, the uptake and distribution of these nanocrystals within the monolayered cell line A549 were investigated by mapping the intensities at subcellular resolution using LA-ICP-MS. It could be shown, that the cells were efficiently labeled with the nanocrystals. Additionally, the bioconjugation of the nanocrystals to antibodies and particularly the preservation of the antibody specificity was investigated using Dot Blot experiments. All in all, the results imply high sensitivity and the possibility of multiparametric analysis by doting various lanthanides into the nanocrystals. T2 - ICPMS Anwendertreffen 2018 CY - Berlin, Germany DA - 03.09.2018 KW - Bioimaging KW - Nanoparticle KW - Immuno-assay KW - Lanthanide PY - 2018 AN - OPUS4-45865 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Saatz, Jessica T1 - Nanocrystals as labeling reagents for imaging mass cytometry N2 - Imaging of elemental distributions in single cell assays as well as tissue sections can be performed by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). This powerful technique offers precise spatially resolved measurements at trace and ultratrace levels and has been established as an excellent tool to answer analytical, biological and biomedical questions. To date, mass cytometry is already able to simultaneously detect up to 40 cellular targets due to conjugation of isotopically pure lanthanides to affinity binders, e.g. antibodies. To further enhance the ability of multiparametric analysis to more than 100 analytes at once, we investigated lanthanide nanocrystals as new, highly sensitive metal tags for identification of targets in clinical cell assays and tissue samples. Multiparametric analysis will be possible by encoding the lanthanide composition of nanocrystals associated to the affinity binders. Nanocrystals showed remarkable potential for sensitive detection in MS due to high stability and signal amplification compared to e.g. polymer tags, carrying fewer metal atoms. Furthermore, the nanocrystals allow multimodal imaging due fluorescence of Eu3+ as well as contrast enhancing properties of Gd3+ in magnetic resonance imaging. Synthesis of functionalized lanthanide nanocrystals for further bioconjugation was performed with high reproducibility and monodisperse size distribution. For proof of principle, the uptake and distribution of these nanocrystals within the monolayered cell line A549 were investigated by mapping the intensities at subcellular resolution using LA-ICP-MS. It could be shown, that the cells were efficiently labeled with the nanocrystals. Additionally, the bioconjugation of the nanocrystals to antibodies and particularly the preservation of the antibody specificity was investigated using Dot Blot experiments. All in all, the results imply high sensitivity and the possibility of multiparametric analysis by doting various lanthanides into the nanocrystals. T2 - Bioimaging Workshop BI(MS)2 CY - Münster, Germany DA - 24.05.2018 KW - Bioimaging KW - Nanoparticle KW - LA-ICP-MS KW - Lanthanide PY - 2018 AN - OPUS4-45867 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ziegler, Mathias T1 - Lock-in Thermography using High-Power Laser Sources N2 - Optical lock-in thermography is a completely contactless and very sensitive NDT technique. As an optical source of energy, incandescent (i.e. halogen) lamps are most commonly used because they are relatively inexpensive and offer high irradiances at the test site. However, they are strongly restricted by their low modulation bandwidth with a maximum modulation frequency of only about 1 Hz. The use of high-power kilowatt-class laser sources, e.g. diode laser arrays, pushes this constraint beyond 100 Hz, see Fig.1. This allows for the exploration of the near-surface region of metals and layer systems with better and more accurate penetration depth and depth resolution. Moreover, these lasers are virtually free of any additional thermal radiation that could interfere with the “true” thermal response emitted from the heated sample. In turn, they can be easily used in a one-sided test configuration. Using the one-dimensional solution to the thermal heat diffusion equation together with the absorptance of the material which is illuminated with a harmonically modulated light source, we can calculate the temperature oscillation at the surface of a solid. As a second step, we calculate the corresponding oscillation of the total thermal emission using Stefan-Boltzmann law as a first order approximation and taking into account the emissivity of the material. Within this framework we can calculate the minimal irradiance of a light source necessary to provoke a measurable signal within a thermographic camera at a noise equivalent temperature difference (NETD) of 30 mK. In Fig. 2 this relationship is displayed for a wide spectrum of modulation frequencies and for a number of different light sources scaled to the same electrical input power and illumination area. Using this figure, it is now easily possible to analyze the range of materials to be tested using lock-in thermography, since only the materials (dotted lines) below the irradiance-vs-frequency curves (solid lines) are heated in excess of the camera’s NETD. This figure clearly shows that laser sources considerably increase the application range of lock-in thermography, since especially for metals with a high reflectance and high thermal diffusivity a high irradiance is vitally important to allow for lock-in texting. We present current activities with kilowatt-class high-power laser sources for advanced lock-in thermography and focus on the application of laser arrays that offer a very high irradiation strength over a large sample area beyond the mentioned advantages. T2 - Conference QIRT 2018 CY - Berlin, Germany DA - 25.06.2018 KW - Thermography KW - Laser Thermography KW - Lock-in Thermography PY - 2018 AN - OPUS4-45447 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herold, Christian A1 - Völzke, Holger A1 - Orellana Pérez, Teresa T1 - Verbundvorhaben KoBrA - Arbeitspaket 1 (a) N2 - Im Vorhaben "KoBrA" sollen aus bestehenden Anforderungen für endlagerfähige Behälter und aus internationalen Erfahrungen ein aktueller Stand auf dem Gebiet der Behälterforschung für HLW/SF-Behälter ermittelt und generische Vorschläge für HLW/BE-Endlagerbehälterkonzepte in den drei potentiellen Wirtsgesteinen (Kristallin, Ton oder Salz) erarbeitet werden. N2 - Within Project "KoBrA" we want to establish the international state of the art in final disposal containers for HLW/SF, and, based on boundary conditions and national legislation, to propose generic final disposal canister concepts for all three potential host rocks (crystalline rock, clay and salt) for the German high-level waste. T2 - Fachinformationsgespräch zum FuE-Vorhaben "KoBrA" CY - Berlin, Germany DA - 28.05.2018 KW - Endlagerbehälter KW - Hochaktive wärmeentwickelnde Abfälle KW - Internationale Recherche KW - Arbeitsflussdiagramm PY - 2018 AN - OPUS4-45459 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prager, Jens T1 - Efficient modelling of guided ultrasonic waves using the Scaled Boundary FEM towards SHM of composite pressure vessels N2 - The Scaled Boundary Finite Element Method (SBFEM) is a semi-analytical method that shows promising results in modelling of guided ultrasonic waves. Efficiency and low computational cost of the method are achieved by a discretisation of the boundary of a computational domain only, whereas for the domain itself the analytical solution is used. By means of the SBFEM different types of defects, e.g. cracks, pores, delamination, corrosion, integrated into a structure consisting of anisotropic and isotropic materials can be modelled. In this contribution, the SBFEM is used to analyse the propagation of guided waves in a structure consisting of an isotropic metal bonded to anisotropic carbon fibre reinforced material. The method allows appropriate wave types (modes) to be identified and to analyse their interaction with different defects. Results obtained are used to develop a structural health monitoring system for composite pressure vessels used in automotive and aerospace industries. T2 - 9th European Workshop on Structural Health Monitoring (EWSHM) CY - Manchester, UK DA - 10.07.2018 KW - Structural Health Monitoring KW - Pressure tanks KW - Hydrogen storage KW - Finite Element Modelling KW - Composites PY - 2018 AN - OPUS4-45486 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herold, Christian A1 - Völzke, Holger A1 - Orellana Pérez, Teresa T1 - Verbundvorhaben "KoBrA" - Arbeitspaket 1 (b) N2 - Im Vorhaben "KoBrA" sollen aus bestehenden Anforderungen für endlagerfähige Behälter und aus internationalen Erfahrungen ein aktueller Stand auf dem Gebiet der Behälterforschung für HLW/SF-Behälter ermittelt und generische Vorschläge für einen deutschen HLW/BE-Endlagerbehälter in den drei potentiellen Wirtsgesteinen (Kristallin, Ton oder Salz) erarbeitet werden. Im Arbeitspaket 1 wird dafür eine umfassende Literaturrecherche zu internationalen Behälterkonzepten durchgeführt, deren erste Ergebnisse hier präsentiert werden. N2 - Within Project "KoBrA" we want to establish the international state of the art in design and concepts for HLW/SF final disposal Containers. Working package 1, encompassing an extensive literature research on this topic, yielded some preliminary results - promising container concepts - which are presented here. T2 - Fachinformationsgespräch zum FuE-Vorhaben "KoBrA" CY - Berlin, Germany DA - 28.05.2018 KW - Endlagerbehälter KW - Internationale Endlagerkonzepte KW - Hochaktive wärmeentwickelnde Abfälle KW - Final disposal cask PY - 2018 AN - OPUS4-45460 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herold, Christian A1 - Völzke, Holger A1 - Orellana Pérez, Teresa T1 - Verbundvorhaben "KoBrA" N2 - Im Verbundvorhaben "KoBrA" sollen systematisch Randbedingungen, Anforderungen und Konzepte für BE/HLW-Endlagerbehälter in den potentiellen Wirtsgesteinen Kristallin, Ton und Salz gesammelt, zusammengetragen und ausgewertet werden. Am Ende sollen generische Behälteranforderungen und -Konzepte für mögliche endlagerfähige Behälter in Deutschland erarbeitet werden. Hier wird ein Überblick über das gemeinsam mit unseren Partnern von der DBE TEC (jetzt BGE TEC) bearbeitete Gesamtvorhaben mit allen Arbeitspaketen gegeben. N2 - Within Project "KoBrA" we will compile and analyse requirements, demands and concepts for HLW/SF final disposal containers for the potential host rock formations crystalline, clay and salt, and thereby establish proposals for generic final disposal canisters. This poster presentation offers an overview of all work packages we share with our Partners from DBE TEC (now BGE TEC). T2 - Fachinformationsgespräch zum FuE-Vorhaben "KoBrA" CY - Berlin, Germany DA - 28.05.2018 KW - Projektvorhaben KW - Endlagerbehälter KW - BGE TECHNOLOGY KW - Literaturrecherche KW - Endlageranforderungen PY - 2018 AN - OPUS4-45466 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ahmadi, Samim T1 - Thermographic super resolution using structured 1D laser illumination and joint sparsity N2 - Thermographic NDE is based on the interaction of thermal waves with inhomogeneities. These inhomogeneities are related to sample geometry or material composition. Although thermography is suitable for a wide range of inhomogeneities and materials, the fundamental limitation is the diffusive nature of thermal waves and the need to measure their effect radiometrically at the sample surface only. The propagation of the thermal waves from the heat source to the inhomogeneity and to the detection surface results in a degradation in the spatial resolution of the technique. A new concerted ansatz based on a spatially structured heating and a joint sparsity of the signal ensemble allows an improved reconstruction of inhomogeneities. As a first step to establish an improved thermographic NDE method, an experimental setup was built based on structured 1D illumination using a flash lamp behind a mechanical aperture. As a follow-up to this approach, we now use direct structured illumination using a 1D laser array. The individual emitter cells are driven by a random binary pattern and additionally shifted by fractions of the cell period. The repeated measurement of these different configurations with simultaneously constant inhomogeneity allows for a reconstruction that makes use of joint sparsity. With analytical-numerical modelling or numerical FEM simulations, we study the influence of the parameters on the result of non-linear reconstruction. For example, the influence of the illumination pattern as a variable heat flux density and Neumann boundary condition for convolution with the constant Green's function can be studied. These studies can be used to derive optimal conditions for a measurement technique. T2 - 62. International School of Quantum Electronics die Tagung “Progress in Photoacoustic & Photothermal Phenomena" CY - Erice, Italy DA - 06.09.2018 KW - Super resolution KW - Virtual wave KW - Laser thermography KW - 1d laser KW - Joint sparsity KW - Laser array KW - VCSEL array KW - High-power laser PY - 2018 AN - OPUS4-46180 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wu, Cheng-Chieh T1 - A small-scale test bridge for measurement- and model-based structural analysis N2 - To examine the capability to detect and localise damage using the Measurement- and Model-based Structural Analysis (MeMoS), a small-scale truss bridge (1520 mm × 720 mm × 720 mm) made of aluminium profiles is built as a test specimen for this purpose. The truss frame of the test bridge is made of aluminium profiles with a sophisticated design of the cross-sectional area. In comparison, with solid profiles, only a fraction of the material is needed to produce the profiles, while their bending resistance decreases slightly. The profiles are built into a truss frame by connecting them by means of fastening sets made of steel. The bridge model is mounted on four steel bearings which each of them consist of a cylinder arranged between two plates. Fixed bearings are made by holding onto one end of the bridge. The bridge is subjected by an external load by placing a heavy object beneath it. At the same time, measurements can be conducted below the bridge. Therefore, the bridge specimen is elevated by attaching it on a pedestal with four columns. Damages can be induced by loosening the fastening pieces. T2 - 35th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Sinaia, Romania DA - 25.09.2018 KW - Adjustment calculation KW - Finite element method KW - Damage detection and localisation KW - Structural analysis KW - Photogrammetry PY - 2018 AN - OPUS4-46113 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hüllmann, Dino A1 - Neumann, Patrick P. T1 - Control of a spherical parallel manipulator with three degrees of freedom N2 - In robotic applications, it is often necessary to orient a sensor quickly. Spherical parallel manipulators (SPM) are well suited for this purpose since they offer superior dynamics and structural stiffness as compared to serial manipulators. To control them, however, the kinematic equations have to be known. In this paper, a SPM with three degrees of freedom and the kinematic equations describing its mechanical properties are presented. T2 - 35th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Sinaia, Romania DA - 25.09.2018 KW - Spherical parallel manipulator KW - Control PY - 2018 AN - OPUS4-46142 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. A1 - Bartholmai, Matthias T1 - Concept of a gas-sensitive nano aerial robot swarm for indoor air quality monitoring N2 - In industrial environments, airborne by-products such as dust and (toxic) gases, constitute a major risk for the worker’s health. Major changes in automated processes in the industry lead to an increasing demand for solutions in air quality management. Thus, occupational health experts are highly interested in precise dust and gas distribution models for working environments. For practical and economic reasons, high-quality, costly measurements are often available for short time-intervals only. Therefore, current monitoring procedures are carried out sparsely, both in time and space, i.e., measurement data are collected in single day campaigns at selected locations only. Real-time knowledge of contaminant distributions inside the working environment would also provide means for better and more economic control of air impurities. For example, the possibility to regulate the workspace’s ventilation exhaust locations can reduce the concentration of airborne contaminants by 50%. To improve the occupational health and safety of (industrial) workplaces, this work aims for developing a swarm of gas-sensitive aerial nano robots for monitoring indoor air quality and for localizing potential emission sources. T2 - Tag der offenen Tür auf dem Testgelände der BAM (BAM TTS) CY - Baruth/Mark - OT Horstwalde, Germany DA - 29.09.2018 KW - Mobile Robot Olfaction KW - Swarm KW - Nano aerial robot KW - Gas sensing PY - 2018 AN - OPUS4-46147 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falk, Florian T1 - Early oxidation and sulfidation of high temperature model alloys: An EDXRD in situ study N2 - The fundamental impact of sulfur and water on corrosion rates and potential failure of the exposed material is well known. However, the access to the related corrosion mechanism causing material degradation is often a problem to solve. This study investigates the effect of SO2 and water vapor in the initial stages of corrosion of an Fe9Cr0.5Mn model alloy at 650 °C in situ. The analysis was carried out under laboratory conditions using energy-dispersive X-ray diffraction (EDXRD). T2 - Dechema EFC Workshop CY - Frankfurt am Main, Germany DA - 26.09.2018 KW - Sulfidation KW - Model alloy KW - Oxidation PY - 2018 AN - OPUS4-46134 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - Concept of a gas-sensitive nano aerial robot swarm for indoor air quality monitoring N2 - In industrial environments, airborne by-products such as dust and (toxic) gases, constitute a major risk for the worker’s health. Major changes in automated processes in the industry lead to an increasing demand for solutions in air quality management. Thus, occupational health experts are highly interested in precise dust and gas distribution models for working environments. For practical and economic reasons, high-quality, costly measurements are often available for short time-intervals only. Therefore, current monitoring procedures are carried out sparsely, both in time and space, i.e., measurement data are collected in single day campaigns at selected locations only. Real-time knowledge of contaminant distributions inside the working environment would also provide means for better and more economic control of air impurities. For example, the possibility to regulate the workspace’s ventilation exhaust locations can reduce the concentration of airborne contaminants by 50%. To improve the occupational health and safety of (industrial) workplaces, this work aims for developing a swarm of gas-sensitive aerial nano robots for monitoring indoor air quality and for localizing potential emission sources. T2 - 35th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Sinaia, Romania DA - 25.09.2018 KW - Mobile Robot Olfaction KW - Swarm KW - Nano aerial robot KW - Gas sensing PY - 2018 AN - OPUS4-46140 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolter, Christian T1 - Metallsulfide als Reibungsstabilisatoren in Bremsbelägen - tribologische Untersuchungen an Modellsystemen N2 - Der Posterbeitrag handelt davon, wie das Reibverhalten und die Temperaturabhängikgeit durch den Einsatz von Metallsulfiden maßgeblich beeinflusst wird und zur Stabilität beiträgt. T2 - 59. Tribologie-Fachtagung CY - Goettingen, Germany DA - 24.09.2018 KW - Metallsulfide KW - Bremsbeläge KW - Tribologie PY - 2018 AN - OPUS4-46187 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hollamby, M. J. T1 - Formation and magnetic alignment of a photoconductive organogel formed by an alkyl-C60 hydrophobic amphiphile N2 - The formation and alignment of gel fibres in alkanes (solvents) was investigated. The gel fibres consist of small amphiphilic molecules containing a C60 molecule and a small ligand chain. Under the right conditions, these self-assemble in core-shell micelles, which themselves pack into micron-sized fibre-like structures. These can be aligned using a strong magnetic field, as investigated using SANS with a 17T superconducting magnet at a range of field strengths. T2 - 7th EuCheMS Chemistry Congress CY - Liverpool, UK DA - 26.08.2018 KW - Small-angle scattering KW - Alignment KW - SANS KW - SAXS PY - 2018 AN - OPUS4-46101 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bernegger, Raphael T1 - Quantitative determination of the geometry of defects by pulse thermography N2 - Pulsed thermography is a well-known non-destructive testing technique and has proven to be a valuable tool for examination of material defects. Material defects are often simulated by flat-bottom holes (FBH) or grooves. Typically, analytical 1D models are used to determine the defect depth of FBHs, grooves or delaminations. However, these models cannot take into account lateral heat flows, or only to a limited extent (semi-empirical model). They are therefore limited by the FBHs aspect ratio (diameter to remaining wall thickness), to ensure that the heat flow above the defect can still be described one-dimensionally. Here, we present an approach for quantitative determination of the geometry of FBH or grooves. For this purpose, the results of a numerical 2D model are fitted to experimental data, e.g., to determine simultaneously the defect depth of a FBHs or groove and its diameter or width, respectively. The model takes lateral heat flows into account as well as thermal losses. Figure 1 shows the temperature increase of a pulsed thermography measurement at three different locations on the sample. The numerical model is fitted to the experimental data (red lines) to quantify the groove. The numerical simulation matches the experimental data well. T2 - Progress in Photoacoustic & Photothermal Phenomena CY - Erice, Italy DA - 06.09.2018 KW - Pulse thermography KW - Numerical modelling KW - 2D model KW - Data reconstruction KW - Flat bottom holes KW - Notches KW - Opaque materials PY - 2018 AN - OPUS4-46103 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kapa, Thomas T1 - Verteilte faseroptische Zustandsüberwachung von Mittel- und Hochspannungskabeln N2 - Verteilte faseroptische Sensorik eignet sich sehr gut für eine Zustands- und Gefährdungsüberwachung von ausgedehnten Hochspannungskabelinstallationen. Basierend auf der Messung von verschiedenen faseroptischen Rückstreueffekten in der Sensorfaser lassen sich ortsaufgelöste Profile von Messgrößen wie Temperatur, Dehnung oder Vibrationen erzielen. Hier demonstrieren wir die Leistungsfähigkeit verschiedener faseroptischer Sensorikansätze bezüglich dieser Größen anhand von Experimenten u.a. an einem Mittelspannungskabel. Des Weiteren zeigen wir, wie die Verwendung von verschiedenen Sensorkabeltypen mit unterschiedlicher Applikation auf der Kabeloberfläche die Messergebnisse bei einem Biegeversuch beeinflussen und schlussfolgern damit auf die für die Einbettung in Kabeln geeigneten Sensoren. T2 - VDE Fachtagung Hochspannungstechnik CY - Berlin, Germany DA - 12.11.2018 KW - Verteilte Fasersensorik KW - Hochspannung KW - Monitoring PY - 2018 AN - OPUS4-46622 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tschirschwitz, Rico T1 - Safety in Technology and Chemistry - BAM Focus Area Infrastructure N2 - The poster contains a description of the extensive activities in the Focus area infrastructure as well as the unique possibilities for experimentatation on the BAM Test Site for Technical Safety T2 - BMBF Workshop "Shaping European civil security research in Horizon Europe" CY - Brussels, Belgium DA - 06.11.2018 KW - BAM focus area infrastructure KW - BAM Test Site for Technical Safety KW - Tank failure PY - 2018 AN - OPUS4-46568 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang T1 - Quality Improvement of VOC chamber emission tests observed for 10 years with round robin tests N2 - In Europe, the Construction Products Regulation (CPR, 2011/305/EU) sets basic requirements (BR) on how construction works must be designed and built. BR 3 “hygiene, health and the environment” states low emissions of toxic gases, Volatile Organic Compounds (VOCVOCs), particles, etc. from building materials. Meanwhile, a worldwide network of professional Commercial and non-commercial laboratories performing emission tests for the evaluation of products for interior use has been established. Therefore, comparability of test results must be ensured. The participation in Round Robin Tests (RRTRRTs) is a means to prove a laboratory’s proficiency. Since 2006 BAM offers such proficiency test for emission chamber test every two years. Any commercially available product on the market can be used as reference material, provided it is thoroughly characterised. However, these materials often emit only a few and material specific VOCs and appropriate homogeneity is not given. Therefore, alternative materials should be found. BAM used different materials over the years. Currently, the best suited reference material is a cured lacquer surface which contained several VOCs added to the liquid lacquer system. The round robin tests 2014, 2016 and 2018 were conducted with such a system. Compounds like Styrene or n-Alkanes like Decane or Tridecane were tested in many of the proficiency test operated by BAM. Up to now the relative standard deviation of these compounds decrease continuously. Starting with values about 30 % in 2008 we reached values for the mentioned compounds 15 to 20 % now. But even for more polar compounds improved results were received. Over the years the results of a large group of laboratories detected many compounds with much higher accuracy than at the beginning. So, the comparability between results of different laboratories becomes much better. T2 - International Conference on Risk Assessment of Indoor Air Chemicals CY - Berlin, Germany DA - 16.09.2018 KW - Chamber test KW - Round robin test KW - VOC-emission PY - 2018 AN - OPUS4-47906 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Büchele, Dominique T1 - Development of a robust calibration model for determination of nutrients in soils using EDXRF N2 - As part of the BonaRes research initiative, funded by the BMBF, strategies are being developed to use soil as a sustainable resource in the bio economy. The interdisciplinary subproject I4S - “Intelligence for soil” - is responsible for the development of an integrated system for site-specific management of soil fertility. For this purpose, a platform is constructed and various sensors are installed. Real-time data will be summarised in models and decision-making algorithms will be used to control fertilisation and accordingly improve soil functions. Aim of the BAM in the frame of I4S is the characterisation of an energy-dispersive X-ray fluorescence (EDXRF) based sensor for robust determination of plant essential nutrients in soil. First a principal component analysis (PCA) was used to identify outliers and to observe the largest variance within the German soil samples. It could be monitored that splitting of the samples was due to their iron content. Given that clay samples contain high amounts of iron and sandy samples low amounts, a classification of the samples by their soil texture according to VD LUFA was possible. Considering the complex composition of soil, a matrix-specific calibration was carried out by univariate and multivariate data analysis. The figures of merit demonstrated that a more robust calibration model with negligible matrix effects can be obtained by a multivariate approach using partial least squares regression (PLSR). A better correlation between predicted values compared to reference values for German soil samples was observed for the chemometric calibration model than for the univariate one. Different factors can affect the received calibration models such as moisture and particle size distribution which is especially important due to later online Analysis. In first studies the influence of moisture on the detection of plant essential nutrients was investigated. With increasing water content, the characteristic fluorescence peaks decrease and start to increase again at a water content of 15 %. With lower moisture content the soil agglomerates which leads to lower packing of the sample, resulting in a rougher surface which negatively influence the signals. Whereas, agglomerates are not formed at higher water content. This allows the sample to be packed more tightly thus a smoother surface and a better homogeneity is obtained. Furthermore, particle size distribution leads to significantly higher uncertainties and lower signals when comparing grounded (< 500 μm) and not grounded (< 2 mm) samples. This can be explained by amplifying of the already known inhomogeneity of soils. Both factors must be included in the chemometric PLSR to obtain robust calibration models for each macro and micro nutrient. T2 - AK Prozessanalytik CY - Hannover, Germany DA - 03.12.2018 KW - EDXRF KW - Soil KW - Chemometrics PY - 2018 AN - OPUS4-48280 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfretzschner, Beate T1 - Hydrogen in blistered iron visualized in 3D by neutron tomography N2 - Presented are neutron tomographies on hydrogen charged iron samples. T2 - RACIRI Summerschool CY - Sellin, Germany DA - 22.08.2015 KW - Eisen KW - Neutronenradiographie KW - Wasserstoff PY - 2014 AN - OPUS4-47786 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Julseth, Mara Jean T1 - Chromosome chains in termite evolution N2 - Termites, the oldest eusocial insect group, display important divergent features compared to the eusocial Hymenoptera, including diploidy and an XY sex differentiation system. Termite males have frequently been shown to generate multivalent chromosome chains and rings during meiosis. This intriguing phenomenon could act on multiple evolutionary scales. Firstly, chain formation creates a higher probability of large-scale chromosomal translocations, which could play an important role in chromosome evolution across deep evolutionary time. Secondly, chains occurring in meiosis I should suppress recombination, leading to accumulation of genetic divergence in corresponding chromosomal regions, with potential consequences for speciation dynamics. Suppressed recombination may also represent a mechanism to maintain genetic heterozygosity, thereby theoretically mitigating against the negative effects of inbreeding. A high tolerance for inbreeding could have played a prominent role during the evolution of termite eusociality through its potential impact on inclusive fitness. Using newly sequenced near-chromosome-level reference genomes of native European Reticulitermes species, we will compare chromosomal translocations against other termite species as well as solitary relatives from Blattodea. Additionally, combining a large-scale population genomic data set with high resolution karyotypying across the southern European range, we aim to test the hypotheses that the occurrence and extent of chromosomal rings or chains i) are positively correlated with inbreeding, and ii) contribute to species divergence via the accumulation and fixation of genetic differences. In summary, this project seeks to identify the diverse roles that chain and ring chromosomes have played and continue to play in termite evolution. T2 - IUSSI 2024 CY - Lausanne, Switzerland DA - 07.07.2024 KW - Termites KW - Chromosomes KW - Evolution PY - 2024 AN - OPUS4-61254 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisermann, R. T1 - Distributed acoustic/vibration sensing: Towards advanced transformer condition monitoring N2 - A novel method for transformer vibration monitoring using intensity-based distributed acoustic/vibration sensing (DAS/DVS) is presented. Fibre optic sensors were fully integrated into an oil-filled medium voltage distribution transformer. Opencircuit in-situ measurements were carried out using a single and three-phase supply with an electrical power of up to 30 kVA. Spectral analysis of the mechanical vibrations were performed by measuring the frequency response of the transformer using plain fibre- and transducer-based DVS approaches. The results were compared with the spectra of a microphone mounted on the outside of the transformer housing and the electrical measurements on the high voltage side. Using the fibre optic DVS based monitoring we were able to detect changes in operating power and frequency. Further it could be shown, that it is possible to identify anomalous behaviour such as electrical/mechanical noise sources using the determined vibration spectra. T2 - 2024 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) CY - Berlin, Germany DA - 18.08.2024 KW - Distributed acoustic sensing KW - Condition monitoring KW - Transformer monitoring PY - 2024 AN - OPUS4-61799 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Román Healy Corominas, Francesco Piccolo T1 - Sulfur Spillover on Carbon Materials and its Relevance for Metall-Sulfur Solid-State Batteries N2 - Lithium-sulfur batteries are commonly assembled using a composite material containing porous carbon and sulfur as the cathode. While much work has been done on the design of such high performance composites, the interaction between sulfur and carbon is poorly unterstood. Here we provide further evidence that sulfur and porous carbon undergo a spontaneous reaction at room temperature, recently described as "sulfur spillover". Thermal measurements, XRD, XAS and EPR are used to provide insight into the interaction energy and structure of sulfur after spillover. We also show that the effect may cause a loss in cell voltage by about 70 mV. T2 - 11th Workshop Lithium-Sulfur Batteries CY - Dresden, Germany DA - 11.11.2024 KW - Sulfur Spillover KW - Metal-Sulfur Solid-State Batteries KW - TAM IV KW - XRD KW - XAS KW - EPR PY - 2024 AN - OPUS4-61736 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seena Prem, Pranav T1 - Investigation of Instrumental Isotope Fractionation in ICPMS N2 - Instrumental Isotopic Fractionation (IIF) is the fractionation of isotopes within the mass spectrometer, resulting in a deviation of the measured isotope ratio from the true isotope ratio in a sample. The foremost challenge in obtaining highly precise and accurate absolute isotope ratio measurements lies in implementing adequate corrections for IIF. The causes of IIF are not yet completely understood and differ according to the type of instrument. We are using certified isotope reference materials to investigate the IIF behavior in in different types of ICPMS instruments with different mass separation devices including double focusing sector field (single and multicollector), quadrupole filter and time-of-flight ICPMS. T2 - DAAS PhD Seminar CY - Berlin, Germany DA - 16.11.2023 KW - Isotope ratios KW - Instrumental Isotope Fractionation KW - MCICPMS PY - 2023 AN - OPUS4-61722 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prajapati, Harshit Kumar T1 - Experimental evolution of Deformed Wing Virus in developing honeybees (Apis mellifera) N2 - The emergence of several infectious diseases in the last few decades has resulted in elevated honeybee (Apis mellifera) colony losses. Especially, (+) single-stranded RNA viruses (like Deformed Wing Virus) have become prominent due to a novel vector from Asia, the ectoparasitic mite – Varroa destructor. The evolution of DWV virulence is thought to have shifted dramatically since the arrival of V. destructor. According to the virulence trade-off theory, viruses found in vector-invaded hosts should evolve a certain level of virulence that optimizes transmission and subsequent spread. In this study, we aim to test this prediction by passaging DWV in white-eyed pupae by microinjection (10 generations), to emulate the vectoring function of V. destructor. Isolated viruses will be quantified, genotyped, and subjected to 3 transmission selection regimes: (i) Early: at 8 days, (ii) Optimal: at 11 days, and (iii) Late: at 14 days of injection. Viral genomes from all passages will be analyzed by combined data from high-throughput (Illumina NextSeq) and long-read (Oxford Nanopore) sequencing. Viral population dynamics will be reconstructed, linking of mutations to inter-host transmission and viral load, and site-/gene-specific tests of natural selection will be conducted T2 - Ecological Immunology Conference 2022 CY - Heidesee, Germany DA - 07.09.2022 KW - Evolution KW - Varroa KW - Honeybees PY - 2022 AN - OPUS4-61714 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prajapati, Harshit Kumar T1 - Bees got a virus? N2 - The poster was presented at the long night of sciences 2023, to spread awareness about the Deformed Wing Virus - a leading cause of honeybee colony losses worldwide. We also describe our research contributions to understanding the evolutionary dynamics of this virus. T2 - Lange Nacht der Wissenschaften 2023 CY - Berlin, Germany DA - 17.06.2023 KW - Evolution KW - Varroa destructor KW - Honeybees KW - Virus PY - 2023 AN - OPUS4-61717 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prajapati, Harshit Kumar T1 - Transmission mediated adaptation of virulence in Deformed Wing Virus N2 - The emergence of several infectious diseases in the last few decades has resulted in elevated honeybee (Apis mellifera) colony losses. Especially, (+) single-stranded RNA viruses like Deformed Wing Virus (DWV) have become prominent due to a novel vector from Asia, the ectoparasitic mite – Varroa destructor. The evolution of DWV may have been significantly affected by the establishment of a new transmission route, as represented by V. destructor. According to virulence-transmission trade-off theory, viruses found in vector-invaded hosts may evolve a level of virulence that maximizes transmission and subsequent spread in the colony. In this study, we tested this prediction by passaging DWV in white-eyed pupae by microinjection over 10 generations, to emulate the vectoring function of V. destructor, while subjecting the virus to 3 different transmission selection regimes: (i) Early: at 4 days, (ii) Optimal: at 6 days, and (iii) Late: at 8 days post-injection. The evolved viral genomes are analyzed by long-read (Oxford Nanopore) sequencing. The reconstructed viral population dynamics are compared with the inter-host transmission and viral load, to identify fixed mutations contributing to the adapted virulence. Using a site-/gene-specific test of natural selection, we explore the phenotypic effects of virulence among the evolved viruses. T2 - International Virus Bioinformatics Meeting 2024 CY - Leuven, Belgium DA - 28.05.2024 KW - Evolution KW - Varroa destructor KW - Honeybees KW - Virus PY - 2024 AN - OPUS4-61719 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blaeß, Carsten T1 - Binder jetting of crystallizing bioactive glass powders N2 - Customized artificial bone replacement implants made of resorbable bioactive glass (BG) have not yet become widely accepted in clinical use. This is mainly due to the contrariness of sintering ability and appropriate bioactivity. Concurrent crystallization often prevents the generation of dense sinter bodies, especially for additive manufactured 3D scaffolds. The presented study investigates the limits and advantages of crystallization of powder compacts manufactured by binder jetting and uniaxial pressing for different particle size fractions (psf) of two BGs. T2 - CeramicAM 2024 - 1º CY - Sao Paulo, Brasil DA - 19.09.2024 KW - Bioactive glass KW - Sintering KW - Crystallization KW - Additive manufacturing PY - 2024 AN - OPUS4-62594 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hauschildt, Charlotte T1 - New Approaches to PFAS Quali- and Quantification using GC-MS N2 - Known as “forever chemicals”, per- and polyfluoroalkyl substances (PFAS) are a class of synthetically produced chemicals that includes an estimated 10.000 compounds. Due to the persistence, toxicity and ubiquitous occurrence, research has focused on the qualification and quantification of the most important compounds as well as on the investigation of toxicity and possible routes of entry over the last 10 years. Liquid chromatography - mass spectrometry (LC-MS) is the analytical standard to test for PFAS, as the spectrum of detectable compounds is significantly more comprehensive than it is currently the case with gas chromatography - mass spectrometry (GC-MS). However, to be able to test for PFAS contamination in a more process-independent manner and to make the analysis more widely accessible, methods based on GC-MS are currently being developed. Since GC-MS methods only cover a fraction of the compounds belonging to the PFAS group so far, further development of the corresponding measurement methods is inevitable [1, 2]. The here described work is part of the EU project 23IND13 ScreenFood [3]. The aim is to develop sensitive analytical GC-MS methods that contribute to an improved identification and quantification of various PFAS (both currently regulated and emerging PFAS) in selected food and food packaging matrices. Of particular interest as a food contact material are native and recycled polymers such as PET. Besides, various techniques, including solvent-free variants such as thermal desorption GC-MS, will be tested for a quick and easy analysis. Multiple derivatization approaches, which cover different PFAS subgroups, will also be tested and evaluated. This poster will present the overall project objectives and first results. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Per- and Polyfluoroalkyl Substances (PFAS) KW - Gas chromatography - mass spectrometry (GC-MS) KW - EU Project KW - Derivatization methods PY - 2025 AN - OPUS4-62709 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Structural Investigations of Transformation Products of the Anticoagulant Drug and Rodenticide Warfarin N2 - Warfarin (Coumadin) is one of the most popular anticoagulant drugs used as a therapeutic in humans to prevent thrombosis, atrial fibrosis, and fibrillation since the 1950s. Because of its ability to hinder blood coagulation by blocking vitamin K-depending carboxylation of blood clotting precursors, it is also used as a rodenticide worldwide. Until today it has been partially substituted by far more potent anticoagulant rodenticides (ARs), so-called superwarfarins. Numerous studies are confirming secondary and tertiary poisoning with ARs in non-target-animals and wildlife. Up to now, relatively little is known about persistence and toxicity of ARs and naturally, nor technically formed transformation products (TPs) in the environment, food chain, and transformations occurring during wastewater treatment. Herein, we present liquid and gas chromatographic methods coupled to (high-resolution) mass spectrometry for the analysis of warfarin’s transformation products. Methodologies such as UV-irradiation, ozonation, and chlorination were utilised to simulate technical water treatment. Resulting compounds were elucidated and examined by numerous analytical methods. Moreover, the oxidative phase I metabolism was mimicked by an electrochemical flow cell to synthesise and confirm major metabolites. The further aim is the toxicological assessment of all substances formed, as well as, the quantification of warfarin and its TPs under environmentally relevant conditions employing the introduced methods. T2 - SETAC 2024 CY - Sevilla, Spain DA - 05.06.2024 KW - Warfarin PY - 2024 AN - OPUS4-61898 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang T1 - VOC-Sampling inside display cases with focus on BEMMA evaluation N2 - Museum display cases aim to protect art and cultural goods not only from theft and vandalism, but also from dirt and dust. An often-heard argument within a call for tender of new display cases is that there should be no emission inside of the display case. This is nearly impossible for new ones especially when they must also fulfill the requirement of an air change rate of less than 0.1 per day. For example, constructions or decorations in exhibition spaces, storage containers in depot rooms, and exhibition display cases release volatile substances that might lead to irreversible changes or, under certain circumstances, damage to the stored or displayed objects. In Germany beneath the well-established Oddy-test also the BEMMA procedure is used to evaluate the construction materials. For larger amounts of display cases control measurements of VOCs at the end of construction or buildup is quite common. However, what is necessary to measure the air inside of display cases. What are the circumstances when the display cases were closed before the test period? Is it possible to organize a clean environment for reliable measurements. How comparable are the resulting VOCs with results from BEMMA test and control measurement at the end. The BEMMA procedure should include a further VOC-test at 60 °C. What are the benefits of this enlargement. Mainly materials that have a high potential to store VOCs inside of the material in combination with a less permeable surface should be evaluated stricter than others. T2 - IAQ 2024 The International Conference on Indoor Air Quality in Heritage and Historic Environments CY - New York, USA DA - 18.11.2024 KW - Emission KW - Air quality KW - Display cases KW - VOC PY - 2024 AN - OPUS4-61967 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Taghavi Kalajahi, Sara T1 - Pilot Study of a Laboratory- Based Microbiologically Influenced Corrosion (MIC) Test Using Microbiological Consortia Sampled from the Field N2 - Experts widely agree that the verification of microbiologically influenced corrosion (MIC) require the use of multiple lines of evidence (MLOE), including metallurgical, microbiological, operational/historical and environmental/chemical aspects. Existing standards related to MIC, such as NACE TM0106, TMO212 and TM0194, primarily aim to offer guidance on gathering such evidence. Working Group 5 of Euro-MIC COST action 20130 (Achieving standardization) proposed a laboratory-based approach that directly confirms the capability of the sampled consortium of microorganisms, obtained from the specific field location under investigation, to increase and/or alter the corrosion processes. It is necessary to verify this laboratory approach by conducting it in different laboratories, performed by different scientist. In the current study, the experiments based on the laboratory protocol of WG5 were conducted at Endures’s laboratory using environmental samples (sediment and seawater) from the North Sea. Metal coupons (carbon steel C1010) were exposed to sediment and seawater samples with varying microbial inoculums and controls over 150 days. Microbial identification, corrosion product analysis, and surface morphology assessments were conducted using molecular and microscopy techniques. The results indicate distinct microbial influences, particularly in treatments containing yeast, which fostered heightened anaerobic activity, notably by sulfate-reducing bacteria (SRB). Weight loss measurements and surface analysis revealed elevated corrosion rates and susceptibility to pitting corrosion in microbial inoculum treatments, with yeast presence exacerbating corrosion processes. Elemental analysis confirmed the presence of iron sulfide in corrosion byproducts, affirming SRB activity. The findings emphasize the importance of employing a MLOE approach and investigating pitting corrosion to better understand the impact of microorganisms on metal corrosion in the marine environments. This study contributes to advancing knowledge in the field and developing standardization: the lab-to-field transition for MIC testing. T2 - MIC-STANDS CY - Lisbon, Portugal DA - 24.07.2024 KW - Microbiologically influenced corrosion (MIC), Multiple lines of evidence (MLOE) KW - Marine Corrosion KW - Achieving standardization PY - 2024 AN - OPUS4-61979 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Taghavi Kalajahi, Sara T1 - The effectiveness of cathodic protection (CP) on microbiologically influenced corrosion (MIC) control N2 - Cathodic protection (CP) is an electrochemical method, to manage corrosion in different industries, especially in buried and sub-merged environments. In those environments microorganisms are present and can affect the corrosion process and cause microbiologically influenced corrosion (MIC). Most of the industry standards recommend performing CP using -800 mV (Ag/AgCl), however, if microorganisms capable of initiating MIC are present, for instance sulfate reducing bacteria (SRB), it is recommended to use even more negative potentials. It is assumed that this will provide adequate protection of the metal. Currently there is no information or valid data in the context of CP, on the level of MIC threat and the extent to which more negative potentials can be used to provide adequate protection and not over-protection (due to hydrogen embrittlement threat). Conflicting statements can be found in the literature regarding the effectiveness of CP on MIC, from reducing biofilm attachment to increasing bacterial activity and biofilm attachment. Recently, the development and lower price of molecular microbiological methods (MMM) have opened the door for more effective studies of MIC mechanisms along with other electrochemical methods and surface analysis. In this work, the genetic functionality of biofilms formed in the laboratory under CP conditions is investigated using transcriptomics. Gene expression of SRB biofilms under different CP potentials (-800, -850 and -900 mV) will be studied; comparison with control will allow us to distinguish the specific genes that are differentially expressed, leading to a better understanding of the mechanism of CP to affect bacterial activity and diversity. Keywords - cathodic protection, microbiologically influenced corrosion, molecular microbial methods. T2 - IBBS CY - Berlin, Germany DA - 09.09.2024 KW - Microbiologically influenced corrosion PY - 2024 AN - OPUS4-61981 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schwarz, Irina A1 - Rieck, Arielle T1 - Valorization of carbon dioxide by electrocatalytic reduction coupled to acetogens via multiple electron carriers (Ecat-acetogens) N2 - To alleviate CO2 emissions and their impact on climate change, converting carbon dioxide into valuable products such as multi-carbon organic chemicals is of great importance. CO2 can be converted via different pathways such as electrochemical, photo-electrochemical and biological etc. Each approach offers distinct merits but also certain challenges in terms of process efficiency, product selectivity and implementation at scale etc. Therefore, developing coupled CO2 conversion systems, for instance bioelectrochemical reactors, can potentially address some of those challenges.[1] In this work, the focus is on developing cost-efficient, biocompatible, and high activity porous M-N-C catalysts with M = Ni and Co that are atomically dispersed as NiN4 and CoN4 active sites in porous carbon matrix. Ni- and Co-N-Cs are prepared by active-site imprinting approach using Mg as an imprinter.[2][3] Pyrolysis of Mg-N-C is carried out in a salt-melt at high temperatures (≥ 800 oC) and followed by an exchange with Ni or Co at low temperatures. N2-sorption of the materials reveal a micro-mesoporous structure with high surface areas (> 1000 m2 g-1) and a mass-transport enabling pore system. Extended X-ray absorption fine structure (EXAFS) reveal the existence of atomically dispersed single atom active sites with defined active site structure. A variety of Ni-N-Cs and Co-N-Cs were tested for CO2R activity in a rotating disc electrode (RDE) setup, showing high activity and selectivity towards CO2R versus the competing HER. Subsequently, these catalysts were implemented in a home-made bio-electrocatalytical system (BES) consisting of a bioreactor coupled to a CO2 electrolysis cell. Here, CO2 is first electrochemically converted to CO in the electrolysis cell which is then directly fed to bacteria (Clostridium ragsdalei) in bioreactor who further metabolize it to valuable carbon compounds such as acetate. In the BES, partial pressures of CO reached a maximum of 5.7 mbar and that of hydrogen was 2.7 mbar after 30 h. A specific exponential bacterial growth rate of 0.16 h-1 was observed with acetate formation rate of 1.8 mg L-1 h-1 and an acetate concentration of 0.103 g L-1 corresponding to acetate formation rate of 0.73 mmol d-1. As will be discussed in greater details in this talk, we have successfully demonstrated the validity of a coupled bio-electrocatalytical system concept operating with Co- and Ni-N-C catalysts for CO2 conversion. T2 - eBiotech Workshop Week + Status Seminar CY - Jena, Germany DA - 19.03.2023 KW - Bioelectrocatalytical system PY - 2023 AN - OPUS4-61997 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klein, Luise T1 - Miniaturization Options in VOC Emissions Assessments of Consumer Products: Comparison of Test Chambers and Dynamic Headspace Extraction Systems N2 - Different emission testing devices were compared to measure reliable initial indoor air concen-trations of volatile organic compounds (VOC) emitting from consumer products. Compared to conventional medium- or large-scale test chambers, smaller devices including micro chambers and dynamic headspace extraction systems offer options for increased sample throughput, automation as well as reduced costs, which could facilitate their application in routine analysis of consumer product-related VOC emissions. T2 - Indoor Air 2024 CY - Honolulu, Hawaii, USA DA - 07.07.2024 KW - VOC KW - Emissions KW - Consumer product KW - Indoor air PY - 2024 AN - OPUS4-62098 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Saif-Ur-Rehman, Saif-Ur-Rehman T1 - Failure prediction during 3D concrete printing: a numerical simulation aproach N2 - 3D concrete printing is a technology that promises to bring digitalization in the construction phase of E&C industry. It brings automation in the construction process by removing the need for formwork and providing a much better geometrical flexibility in terms of construction of complex structures. However, owing to the novelty of the technology, it brings an added complexity compared to traditional methods which needs to be studied. As many parameters are involved in the process, a detailed knowledge about the parameters and their influence on the mechanical behaviour of the object being printed is limited. Because of this, these parameters are commonly determined using a trial-and-error approach which can lead to unforeseen failure during the printing process. A systematic approach to determine the optimal set of parameters is required so that the mechanical behaviour of the (freshly) printed concrete can be controlled. This work is aimed towards achieving a better understanding of the various parameters involved in the 3DCP process and how they affect the mechanical behaviour of the object being printed using a modeling and simulation approach. Additionally, it seeks to develop optimization strategies and process control methods based on numerical models. A physics based numerical model is developed with the focus on capturing the correct material response using von-mises plasticity model with non-linear isotropic hardening. An objective stress rate is used to account for geometric non-linearity. Time dependent material parameters are used to replicate the aging effect of concrete. A density-based step by step layer activation approach is used for the structural model to mimic the layer-by-layer printing process. Both failure modes namely plastic collapse and elastic buckling are observed qualitatively. Model calibration and quantitative comparison with experimental results are planned for future work. Furthermore, development of optimization strategies and building a digital twin of the process using the developed model and sensor data from the printer are also planned. T2 - Additive Manufactured Concrete Structures 2024 CY - Naples, Italy DA - 15.07.2024 KW - 3D Concrete Printing KW - Material Modeling KW - Simulation PY - 2024 AN - OPUS4-62088 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klein, Luise T1 - Bestimmung der Aufnahmeraten von Carbonylen und VVOCs aus Raumluft in Passivprobenahmesystemen N2 - Für die Bewertung der Innenraumluftqualität könnte die Bestimmung der Konzentration von sehr flüchtigen organischen Verbindungen (VVOCs) von großer Wichtigkeit sein, aber für viele Komponenten fehlen die Daten. Auch und im Besonderen bei den GerES-Studien des UBAs erfolgt die Probenahme von flüchtigen organischen Verbindungen (VOCs) üblicherweise mit Passivsammlern über deren substanzspezifische Aufnahmeraten Rückschlüsse auf die Konzentration der einzelnen Verbindungen gezogen werden können. Reale Aufnahmeraten für die Berechnung der Innenraumluftkonzentration fehlen für viele der VVOCs. Ziel dieses UFOPLAN-Projektes ist es von 69 ausgewählten VVOCs und flüchtigen Carbonylen die Aufnahmeraten auf Passivsammler experimentell zu bestimmen. Dafür werden Erkenntnisse von zwei Vorgängerprojekten zur Entwicklung von Analysemethoden für VVOCs mittels Thermodesorptions-Gaschromatographie-Massenspektrometrie (TD-GC-MS) und zur Bestimmung der Aufnahmeraten von VOCs angewendet und angepasst. T2 - Innenraumluft 2024 CY - Dessau, Germany DA - 06.05.2024 KW - VVOC KW - Passivsammler KW - Innenraumluft PY - 2024 AN - OPUS4-62097 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - NMR Spectroscopy as a PAT tool: Field integration of a laboratory instrument N2 - Companies of chemical industry find themselves more often in a rapidly changing environment, e.g., due to variability of raw material quality or energy costs and efficiency. Process optimization and new process concepts become more and more important. Flexible and modular chemical plants can produce various high-quality products using multi-purpose equipment with short downtimes between campaigns and reduce time to market for new products. Intensified continuous production plants allow for difficult to produce compounds like exothermic reactions with high heat dissipation. Highly automated chemical process monitoring along with real-time quality control are prerequisites to such concepts and, thus, should be based on chemical information. A commercially available benchtop NMR spectrometer was integrated to the full requirements of an automated chemical production environment such as explosion safety, field communication, and robust evaluation of sensor data. Field studies in modular and conventional production plant setups show promising results gaining process knowledge for further optimization. NMR spectroscopy appeared as preeminent online analytical method and allows using a modular data analysis approach, which can even serve as reliable reference method for further calibration-dependent PAT applications (e.g., NIR or Raman spectroscopy). Based on experiences from earlier field studies an improved field enclosure setup was developed and built, including the option of a secondary analytical method (e.g., optical spectroscopy). Integrated control systems allow for a flexible implementation based on the available automation infrastructure at the chemical plant or pilot plant setup. In the future, modular interconnecting “smart” PAT systems and process equipment have the potential speed up the setup of production equipment for chemicals and pharmaceuticals and therefore help to reduce the time-to-market. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - NMR Spectroscopy KW - Process Analytical Technology KW - Field Integration KW - Benchtop-NMR PY - 2025 AN - OPUS4-62744 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scharek, Vera T1 - Screening for tin-based environmental pollutants in sediment via ETV/ICP-MS N2 - Electrothermal vaporization coupled with inductively coupled plasma-mass spectrometry (ETV/ICP-MS) shows potential as a fast and convenient screening tool for the monitoring of emerging metal-based pollutants in environmental samples. Organo tin compounds (OTCs) have been widely applied as biocidal ingredients in ship paints in the last century, but are still present in the environment. Conventionally, the analysis of OTCs in sediment samples involves (gas-) chromatographic separation after extraction and pre-concentration of the analytes. With ETV/ICP-MS, it is possible to skip time-consuming and chemical-intensive sample preparation steps, which are prone to errors. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Organotin compounds KW - Sediment KW - Electrothermal Vaporization KW - Inductively coupled plasma-mass spectrometry PY - 2025 AN - OPUS4-62830 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scharek, Vera T1 - Screening for tin-based environmental pollutants in sediment via ETV/ICP-MS N2 - Electrothermal vaporization coupled with inductively coupled plasma-mass spectrometry (ETV/ICP-MS) shows potential as a fast and convenient screening tool for the monitoring of emerging metal-based pollutants in environmental samples. Organo tin compounds (OTCs) have been widely applied as biocidal ingredients in ship paints in the last century, but are still present in the environment. Conventionally, the analysis of OTCs in sediment samples involves (gas-) chromatographic separation after extraction and pre-concentration of the analytes. With ETV/ICP-MS, it is possible to skip time-consuming and chemical-intensive sample preparation steps, which are prone to errors. T2 - European Winter Conference on Plasma Spectroscopy CY - Berlin, Germany DA - 02.03.2025 KW - Organotin compounds KW - Sediment KW - Electrothermal Vaporization KW - Inductively coupled plasma-mass spectrometry PY - 2025 AN - OPUS4-62831 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rodricks, Carol T1 - Recyclable or One-Way Composites? Evaluating the Durability of Elium vs. Epoxy Glass Fibre Composites N2 - Fibre-reinforced polymers are widely used, particularly in lightweight construction, due to their high strength-to-weight ratio and versatility. The expansion of wind turbines calls for ever-lighter materials, and polymer matrix composites are well-positioned to meet this need, offering the necessary strength and long-term durability with reduced weight. However, conventional thermoset composites, such as epoxy-based systems, pose significant recycling challenges as they cannot be easily reprocessed or remoulded. A promising alternative is Elium, a novel thermoplastic resin that offers mechanical properties similar to thermoset polymers while providing the added benefit of chemical recyclability through solvolysis in acetone. This raises an important question: can a recyclable Elium composite match or even surpass the durability of a conventional epoxy composite, particularly in demanding structural applications? In our study, we compare the fatigue performance of Elium (191SA, 151-XO) glass fibre composites to conventional epoxy (RIMR 135, RIMH 137) glass fibre composites. Results indicate that Elium composites demonstrate superior fatigue resistance compared to their epoxy counterparts. The combination of enhanced fatigue durability and chemical recyclability highlights the potential of Elium composites as a sustainable alternative to conventional epoxy-based systems for long-term structural applications. T2 - Materials Week 2025 CY - Frankfurt am Main, Germany DA - 02.04.2025 KW - Polymer matrix composites KW - Recycling KW - Elium KW - Fatigue performance PY - 2025 AN - OPUS4-62936 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hauschildt, Charlotte T1 - New Approaches to PFAS Quali- and Quantification using GC-MS N2 - Known as “forever chemicals”, per- and polyfluoroalkyl substances (PFAS) are a class of synthetically produced chemicals that includes an estimated 10.000 compounds. Due to the persistence, toxicity and ubiquitous occurrence, research has focused on the qualification and quantification of the most important compounds as well as on the investigation of toxicity and possible routes of entry over the last 10 years. Liquid chromatography - mass spectrometry (LC-MS) is the analytical standard to test for PFAS, as the spectrum of detectable compounds is significantly more comprehensive than it is currently the case with gas chromatography - mass spectrometry (GC-MS). However, to be able to test for PFAS contamination in a more process-independent manner and to make the analysis more widely accessible, methods based on GC-MS are currently being developed. Since GC-MS methods only cover a fraction of the compounds belonging to the PFAS group so far, further development of the corresponding measurement methods is inevitable [1, 2]. The here described work is part of the EU project 23IND13 ScreenFood [3]. The aim is to develop sensitive analytical GC-MS methods that contribute to an improved identification and quantification of various PFAS (both currently regulated and emerging PFAS) in selected food and food packaging matrices. Of particular interest as a food contact material are native and recycled polymers such as PET. Besides, various techniques, including solvent-free variants such as thermal desorption GC-MS, will be tested for a quick and easy analysis. Multiple derivatization approaches, which cover different PFAS subgroups, will also be tested and evaluated. This poster will present the overall project objectives and first results. Acknowledgment: The project (23IND13, ScreenFood) has received funding from the European Partnership on Metrology, co-financed from the European Union’s Horizon Europe Research and Innovation Programme and by the Participating States. T2 - PFAS - Vermeidbar, Ersetzbar, Unverzichtbar?! (FU Berlin) CY - Berlin, Germany DA - 07.04.2025 KW - Per- and Polyfluoroalkyl Substances (PFAS) KW - Gas Chromatography - Mass Spectrometry (GC-MS) KW - EU Project KW - Derivatization Methods KW - Food Contact Material (FCM) PY - 2025 AN - OPUS4-62970 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gläser, Peter T1 - Investigations on the Thermochemical Degradation of PFAS in Flue Gas from Laboratory and Pilot Plant Facilities N2 - Per- and polyfluoroalkyl substances – abbreviated as PFAS - are compounds that enter the environment through industrial material cycles. Their chemically stable carbon-fluorine bonds provide valuable technical properties for industrial applications, but also render them resistant and environmentally persistent. Consequently, PFAS accumulate in various biological systems and organisms, and can now be detected in numerous samples, including drinking water, human blood, and soil. This accumulation is concerning due to the documented harmful and/or carcinogenic properties of many PFAS compounds [1,2]. For this reason, it is important to understand the pathways of these compounds from industrial processes into the environment. Combustion processes, such as those in waste incineration, are of particular interest to ensure that no PFAS are released into the environment. In this project, various combustion processes at laboratory and pilot plant scales will be examined to determine the optimal parameters for the reduction of PFAS in different materials. Depending on the definition applied, the range of PFAS spans from ~4,700 to ~14,000 individual compounds, which can vary significantly in their chemical properties. This, combined with a variety of complex matrices, makes PFAS analysis particularly challenging [1,2]. Due to the complexity of PFAS, the analysis of fluorine sum parameters has become established in recent years. The application of High Resolution Continuum Source Graphite Furnace Molecular Absorption Spectroscopy (HR-CS-GFMAS) has seen increased usage [3]. However, such a methodology has not yet been established for gas analysis. Although OTM 45 was published in 2021, allowing the quantification of 50 individual PFAS, it is unclear whether this is representative of the entire class of substances [4]. Therefore, the aim of this project is to improve the analysis of PFAS in flue gas from laboratory and pilot plant facilities, thereby contributing to the understanding of their thermochemical degradation and the optimization of combustion parameters. In initial experiments, a suitable sampling apparatus consisting of impigners, a coil condenser, and gas washing bottles was tested and optimized. Cuttings, partially spiked with PFOA, and sewage sludge served as reference materials. For the measurement of sum parameters, an HR-CS-GFMAS method was developed and validated. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - PFAS KW - Flue Gas KW - HR-CS-GFMAS KW - Waste Incineration PY - 2025 AN - OPUS4-62898 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kunji Purayil, Sruthi Krishna T1 - Physics-Based Model Assisted Age Prediction of Real- Serviced Thermal Barrier Coated Samples Using Infrared Thermography N2 - In this study, an age prediction model is developed for the real serviced thermal barrier coated (TBC) samples. TBC is a multilayer coating applied on metallic structures exposed to high temperatures, such as gas turbine blades and aeroengine parts, to extend the operational life. One of the main challenges for developing an age prediction model is the unavailability of serviced samples and labelled datasets. So, in this study, experimentally validated numerical models are used for data generation. The study considers samples with three different service times, i.e., 0 (newly coated), 500 hours, and 1000 hours. The age prediction is done in two stages: thermal diffusivity prediction for blind real serviced samples with a trained 1D-CNN model and classification of samples based on the service hours into different classes using AI classification models. The results demonstrate that our approach provides reliable age estimations with a high correlation between actual and predicted ages of samples. This method provides a non-destructive, efficient, and accurate method of evaluating the life of TBCs, which is a substantial improvement over traditional techniques that rely on complex destructive methods or microstructural analysis for the age evaluation. T2 - 17th Quantitative InfraRed Thermography Conference (QIRT) CY - Zagreb, Croatia DA - 01.07.2024 KW - Infrared Thermography KW - NDE 4.0 KW - AI for NDT KW - Thermal barrier coatings PY - 2024 AN - OPUS4-62450 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmitt, Johannes T1 - Data Acquisition System for Single Particle Inductively Coupled Plasma Mass Spectrometry (spICP-MS) with Nanosecond Time Resolution N2 - This study presents our data acquisition system prototype for spICP-MS with nanosecond time resolution (nanoDAQ) and a matching data processing approach for nanosecond resolved single particle spICP-MS data. The system continuously samples the secondary electron multiplier (SEM) detector signal with a dwell time of approximately 2 ns and enables the detection of gold nanoparticles (AuNP) as small as 7.5 nm[1] with a commercial single quadrupole ICP-MS instrument. The acquired transient data is processed based on the temporal distance between detector events and the event density. It was shown that the inverse logarithm of the distance between detector events is proportional to the particle size and that the number of detector events corresponding to a particle signal distribution can be used to calibrate and determine the particle number concentration (PNC) of a nanoparticle dispersion.[1] The high data acquisition frequency of the systems allows recording of a statistically significant number of data points in 60 s or less, which leads to the main time limitation for analyses being merely the sample uptake time and rinsing step between analyte solutions. T2 - 55th Annual Conference of the German Society for Mass Spectrometry CY - Freising, Germany DA - 10.03.2024 KW - Nanoparticles KW - Mass Spectrometry KW - Instrumentation KW - spICP-MS PY - 2024 AN - OPUS4-62315 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinelt, Manuel T1 - Capabilities of Surface-Assisted Flowing Atmospheric-Pressure Afterglow Mass Spectrometry (SA-FAPA-MS) for Direct Analysis of Polycyclic Aromatic Hydrocarbons (PAHs) N2 - Ambient desorption/ionization mass spectrometry (ADI-MS) is a growing area in the analytical chemistry of organic molecules. It requires only minimal sample preparation and can reduce analysis time compared to traditional methods.[1] One evolving method is the plasma-based pin-to-capillary Flowing Atmospheric-Pressure Afterglow (FAPA) source. Which is an improved version of the original pin-to-plate FAPA, resulting in significantly lower background signals and less oxidation of the analytes.[2] In our case, samples are probed directly from thin-layer chromatography (TLC) plates, which have shown promising results in improving signal response and performance in mass spectral imaging in previous studies. Especially, cyano (CN)-HPTLC and reversed-phase (RP2)-TLC plates were suited best for the analysis of different organic molecules.[3] In this work, FAPA is investigated as a method to determine polycyclic aromatic hydrocarbons (PAHs). Furthermore, its suitability for rapid screening of real samples was investigated. 30 pure PAH standard samples were analyzed on different TLC surfaces. Cyano (CN)-HPTLC and reversed-phase (RP2)-TLC plates proved to be the most suitable substrate for the analysis of PAH compounds. Linear ranges of up to four orders of magnitude could be achieved. Limits of detection (LOD) of anthracene, chrysene, and fluorene were in the µg/L range. However, these pure analytes differ from PAH samples collected in the environment, which may contain hundreds of different PAHs among other constituents. Therefore, PAH containing real samples were used to test the method and its screening capability on more complex samples. A standard reference material (diesel particulate extract, NIST SRM 1975) was analyzed for method validation. For sample preparation, 1 µL of the extract was spotted directly onto the TLC surface. It was possible to perform a triple determination in approx. 20 min. Therefore, SA-FAPA-MS has a huge potential to be established as a method for rapid qualitative screening of PAHs in real samples. T2 - 55th Annual Conference of the German Society for Mass Spectrometry (Deutsche Gesellschaft für Massenspektrometrie, DGMS). CY - Freising, Germany DA - 10.03.2024 KW - Mass Spectrometry KW - Massenspektrometrie KW - Instrumental Analytical Chemistry KW - Instrumentelle Analytische Chemie KW - Polycyclic Aromatic Hydrocarbons PY - 2024 AN - OPUS4-62316 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lapšanská, Ivana T1 - Thermographic detection and AI evaluation of leading-edge erosion N2 - The European Green Deal and the global fight against climate change call for more and larger wind turbines. To meet the increasing demand for maintenance and inspection, semi-autonomous methods of remote inspection are increasingly being developed in addition to industrial climbers performing the inspection [1, 2]. Rotor blades are exposed to extreme weather conditions throughout their lifetime causing leading edge erosion which changed the aerodynamic features of blades and can cause structural damages. The estimated annual energy production (AEP) losses caused by erosion damages are between 0.5% and 2% per year. The classification of the severity of the damage and the quantification of the resulting AEP losses are subject of scientific research. With such information, cost efficient repairs and maintenance efforts can improve the power production of wind turbines. Passive thermography presents a viable method for inspecting rotor blades, capable of identifying internal damage [3, 4] and surface erosion [5, 6]. An advantage of this method is that it not only detects rain erosion damage but also reveals temperature variations caused by resulting turbulence on the blade's surface. These turbulent effects reduce rotor blade efficiency, leading to losses in AEP. The inspection process takes approximately 10 minutes per turbine and is carried out while the turbine is fully operational, eliminating downtime and revenue losses typically associated with traditional blade inspections. This efficient inspection procedure is further enhanced by an automatic data analysis system, resulting in a substantial number of wind turbines being inspected within a specified timeframe. The automated evaluation of thermal images is executed using a fully convolutional network (FCN). The initial phase involved training an FCN using over 1500 thermal images. The primary objective was to accurately identify the thermal patterns associated with erosion damage at the leading edge. In the ongoing second phase, the emphasis is on integrating thermographic and visual images to assess the extent of the damage using an FCN. Additionally, this phase involves leveraging human factors in the FCN training process and providing a precise estimation of Annual Energy Production losses attributed to the identified rain erosion damages. T2 - EERA Deep Wind 2024 CY - Trondheim , Norway DA - 17.01.2024 KW - Wind KW - Turbulent flow KW - Thermography KW - Wind rotor blade KW - Inspection PY - 2024 UR - https://www.sintef.no/globalassets/project/eera-deepwind-2024/posters/operation-and-maintenance_ivana_lapsanska_thermographic-detection.pdf AN - OPUS4-62501 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klewe, Tim T1 - Feuchtemessung an Fußböden mit Radar und Neutronensonde – Ein Vergleich von Labor und Praxis N2 - Nach Auftreten eines Feuchteschadens in Fußbodenaufbauten sind sowohl die zeitnahe Feststellung als auch Eingrenzung betroffener Bereiche von besonderer Bedeutung. So können erforderliche Renovierungsmaßnahmen effizient geplant und mögliche Folgeschäden vermieden werden. Zur messtechnischen Beantwortung dieser Fragestellungen werden bereits seit vielen Jahren Neutronensonden eingesetzt, welche allerdings keine Tiefenzuordnung des schadensträchtigen Flüssigwassers zulassen. Hierzu müssen mit hohem zeitlichem und finanziellem Aufwand zerstörende Sondierungsbohrungen vorgenommen werden, welche zukünftig durch den parallelen Einsatz des Radarverfahrens vermieden werden könnten. In systematischen Laborstudien wurden gängige Feuchteschäden an häufig anzutreffenden Fußbodenaufbauten simuliert und deren Einfluss auf das Messsignal untersucht. Hierbei kamen Zementund Anhydritestriche, sowie die Dämmmaterialen Styropor, Styrodur, Glaswolle und Perlite-Schüttung mit variierenden Schichtdicken zum Einsatz, um die vielfältigen Konfigurationen der Praxis abzubilden. Für den gewonnenen Datensatz konnten geeignete Signalmerkmale extrahiert werden, welche mithilfe multivariater Datenauswertung eine Klassifizierung des vorliegenden Schadenfalls zulassen. Zum Ende des Forschungsvorhabens steht besonders die Anwendbarkeit der entwickelten Methoden für die Praxis im Fokus. Hierzu wurden Messungen an realen Schadensfällen durchgeführt und deren Ergebnisse mit den Laboruntersuchungen verglichen. Hierbei stellten sich variierende Schichtdicken, sowie vorkommende Fußbodenheizungen und Armierungsgitter als mögliche Fehlerquellen für eine vollständig automatisierte Auswertung heraus. T2 - 81. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG) CY - Online meeting DA - 01.03.2021 KW - Radar KW - Feuchte KW - Fußboden KW - Neutronensonde PY - 2021 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-522227 DO - https://doi.org/10.23689/fidgeo-3955 AN - OPUS4-52222 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klewe, Tim T1 - Signalmerkmale des Radarverfahrens zur Klassifizierung von Feuchteschäden in Fußbodenaufbauten N2 - Zur Eingrenzung und Klassifizierung auftretender Feuchteschäden in geschichteten Fußbodenaufbauten wird bereits seit vielen Jahren das Neutronensondenverfahren eingesetzt. Während eine Eingrenzung des Schadens bereits durch die zerstörungsfrei aufgenommenen Messdaten möglich ist, erfordert die Klassifizierung zeit- und kostenintensive Sondierungsbohrungen. Die somit gewonnenen Tiefeninformationen zur Lage des Flüssigwassers tragen maßgeblich zur Planung der erforderlichen Reparaturarbeiten bei, was die Frage nach einer zerstörungsfreien Alternative zur vertikalen Lokalisierung von Feuchte in Fußböden stellt. Das Radarverfahren ist mit seiner hohen Sensitivität für Wasser besonders geeignet und soll künftig zur automatisierten Klassifizierung typischer Schadensfälle beitragen. In einem laufenden Forschungsvorhaben werden in systematischen Laborstudien gängige Schadensfälle an häufig anzutreffenden Fußbodenaufbauten simuliert und deren Einfluss auf die genannten Verfahren untersucht. Hierbei kommen Zement- und Anhydritestriche, sowie unterschiedliche Dämmmaterialen mit variierenden Schichtdicken zum Einsatz. Wesentlicher Bestandteil der Auswertung ist die Extraktion signifikanter Signalmerkmale des Radarverfahrens, welche Rückschlüsse auf den Schadensfall und ggf. die Wassermenge zulassen. Die Robustheit gegenüber unterschiedlichsten Aufbauten mit wechselnden Schichtdicken und Materialien steht hierbei besonders im Fokus. Erste Ergebnisse empfehlen die Betrachtung der örtlichen Verteilung bestimmter Signalmerkmale im Radargramm (B-Scan), um eine Klassifizierung der Schadensfälle vornehmen zu können. T2 - Fachtagung Bauwerksdiagnose 2020 CY - Berlin, Germany DA - 13.02.2020 KW - Radar KW - Feuchte KW - Signalmerkmale KW - Klassifikation PY - 2020 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-504143 AN - OPUS4-50414 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Munsch, Sarah Mandy T1 - Ermittlung der Oberflächenrelaxivität in Sandsteinen - ein Methodenvergleich N2 - Mit dem zerstörungsfreien Verfahren der nuklear magnetischen Resonanz (NMR) mit Fokus auf 1H-Protonen lässt sich der Feuchtegehalt in porösen Materialien bestimmen und bei einem vollgesättigten Medium eine Porengrößenverteilung ableiten. Für die Ermittlung der Porengrößenverteilung muss die gemessene T2-Relaxationszeitenverteilung mit dem Parameter Oberflächenrelaxivität (OR) umgerechnet werden. Ist dieser Parameter für das zu untersuchende Medium unbekannt, kann dieser mithilfe von Vergleichsverfahren abgeschätzt werden. Dabei kommen z. B. Gassorption, Quecksilberporosimetrie (MIP), Dünnschliff-Mikroskopie oder µ-Computer-Tomographie (µ-CT) zum Einsatz. Da die verschiedenen Verfahren allerdings unterschiedliche Auflösungsgrenzen aufweisen und auf verschiedenen physikalischen Prinzipien beruhen, können die ermittelten ORs für ein Medium stark variieren. Um ein besseres Verständnis für die OR und die Einflüsse der Vergleichsverfahren zu bekommen, wurden 19 verschiedene Sandsteintypen untersucht. Die OR wurde zum einen basierend auf der spezifischen inneren Oberfläche aus der dynamischen Dampfsorption (DVS) und der Gassorption abgeleitet. Zum anderen wurden die Relaxationszeitenverteilungen durch manuelles Anpassen der OR derart in Porengrößenverteilungen umgerechnet, sodass es eine Übereinstimmung mit den Porengrößenverteilungen aus MIP und/oder µ-CT gibt. Die Umrechnung von Relaxationszeitverteilungen in eine Porengrößenverteilung berücksichtigt dabei sowohl fast- als auch slow-diffusion. Insgesamt ergab sich für die Sandsteine ein breites Spektrum an ORs, bei dem die über die innere spezifische Oberfläche ermittelten ORs andere Größenordnungen aufwiesen (< 10 µm/s), als bei dem Vergleich mit MIP oder µ-CT (bis 600 µm/s). Die mit MIP und µ-CT ermittelten Werten lagen dabei um einen Faktor von 1 bis 30 auseinander. Dieser umfangreiche Datensatz, der vier verschiedene Vergleichsverfahren einbezieht, soll neue Erkenntnisse in der Charakterisierung von porösen Materialien (z. B. bezüglich der Oberflächenrauigkeit) und in der Ursache für die starke Variation der OR ermöglichen. Durch das Berücksichtigen von fast- als auch slow-diffusion, können dabei sogar Daten in eine Porengrößenverteilung umgerechnet werden, bei denen das fast-diffusion-Kriterium nach Brownstein und Tarr nicht erfüllt ist. Außerdem ergibt sich aus der Berücksichtigung des slow-diffusion-Regimes ein neues Verständnis für die obere Auflösungsgrenze von NMR. T2 - 82. Jahrestagung der Deutschen Geophysikalischen Gesellschaft CY - Online meeting DA - 07.03.2022 KW - NMR KW - Sandsteine KW - Oberflächenrelaxivität KW - Porengrößenverteilung PY - 2022 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-544721 UR - https://e-docs.geo-leo.de/handle/11858/9672 DO - https://doi.org/10.23689/fidgeo-5330 AN - OPUS4-54472 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Munsch, Sarah Mandy T1 - Möglichkeiten und Grenzen der zerstörungsfreien Erfassung niedriger Feuchtegehalte in teilgesättigten Sandsteinen mit 1H-NMR N2 - Die zerstörungsfreie Ermittlung der Materialfeuchte in Baustoffen ist für das Bauwesen von großer Bedeutung, denn ein erhöhter Feuchteeintrag kann zu Schimmelbildung, Alkali-Kieselsäure-Reaktionen, Korrosion etc. führen und somit ein hohes Schadenspotential mit sich bringen. Auch wenn zur qualitativen Lokalisierung möglicher Schad- und Risikostellen bereits zahlreiche zerstörungsfreie Verfahren in der Praxis Anwendung finden, besteht ein Mangel an quantitativen Verfahren, die auch bei niedrigen Feuchtegehalten sensitiv sind. Eine Methode zur zerstörungsfreien und quantitativen Bestimmung des Feuchtegehaltes und der effektiven Porosität ist die 1H-Kernspinresonzanzmethode (NMR). Da NMR sensitiv für die molekulare Beweglichkeit von Wasserstoffprotonen ist, lassen sich Informationen über die Bindungsform und -stärke sowie der Umgebung (Porengröße und Mineralzusammensetzung) der Wasserstoffprotonen gewinnen. Obwohl es bereits seit über 20 Jahren mobile NMR-Messeräte gibt, wird NMR heutzutage immer noch weitestgehend im Labor eingesetzt. Dies liegt daran, dass sie aufgrund der verwendeten Permanentmagnete schwer sind und nur äußerst geringe Eindringtiefen ermöglichen. In einer derzeit laufenden Forschungsarbeit wird deshalb ein speziell für Bohrkerne entworfener NMR-Tomograph eingesetzt. Mit seiner minimalen Echozeit von 50 µs lässt sich (abhängig von der Oberflächenrelaxivität) Wasser bis in nanometergroßen Poren erfassen. Um die Sensitivität von NMR bei Teilsättigung zu untersuchen, wurden verschiedene Sandsteinproben in Exsikkatoren mit relativen Luftfeuchten im Bereich von 33 % bis 96 % gelagert. Als Referenzen dienen zum einen das NMR-Signal bei Vollsättigung und zum anderen die Porengrößenverteilung aus Quecksilberporosimetriemessungen (MIP). Um die NMR-Sensitivität zu bewerten, wird die Korrelation der NMR-Amplitude mit den gravimetrisch ermittelten Feuchtegehalten sowie ein Vergleich der Porosität aus NMR und MIP betrachtet. Zu beachten ist in diesem Zusammenhang, dass sowohl die Reduzierung der Wasserfilmdicke als auch die Verkleinerung von Porengrößen zu einer ähnlichen Verkürzung der T2-Relaxationszeit führt. Als Ausblick wird ein Lösungsansatz vorgestellt, bei dem die NMR-Signale mit der Wasserfilmdickenberechnung basierend auf der relativen Luftfeuchte im Material korreliert werden. T2 - 81. Jahrestagung der Deutschen Geophysikalischen Gesellschaft CY - Online meeting DA - 01.03.2021 KW - NMR KW - Sandsteine KW - Porosität KW - Oberflächenrelaxivität KW - Feuchtegehalt PY - 2021 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-522271 DO - https://doi.org/10.23689/fidgeo-3957 N1 - Geburtsname von Munsch, Sarah Mandy: Nagel, S. M. - Birth name of Munsch, Sarah Mandy: Nagel, S. M. AN - OPUS4-52227 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Munsch, Sarah Mandy T1 - Determining the pore size distribution in synthetic and building materials using 1D NMR N2 - The detection of moisture in building materials has a high priority in civil engineering to locate and prevent possible moisture damages, e.g. mold, corrosion, delamination etc. Furthermore, it is of great significancy to achieve a better understanding of moisture transport and pore space in different materials. To prevent the degeneration of structures and materials, non-destructive testing methods are more and more deployed. As a non-destructive method in this work, nuclear magnetic resonance (NMR) is applied using a strayfield open magnet device that enables one-dimensional measurements in a defined volumen. By using NMR, the water content of the sample can be determined and also the pore size distribution can be deduced from the relaxation time distribution when having a comparison method like mercury intrusion porosimetry. In this study different synthetic homogenous materials with defined and almost unimodal pore size distributions are investigated as well as building materials like screed. For analyzing the pore space, the samples were measured at different saturation levels and the building materials at different hydration states as well. T2 - Magnetic Resonance in Porous Media 14 CY - Gainesville, FL, USA DA - 18.02.2018 KW - Pore size KW - Synthetic and building materials KW - NMR relaxometry KW - Mercury intrusion porosimetry PY - 2018 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-443868 N1 - Geburtsname von Munsch, Sarah Mandy: Nagel, S. M. - Birth name of Munsch, Sarah Mandy: Nagel, S. M. AN - OPUS4-44386 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Munsch, Sarah Mandy T1 - Zerstörungsfreie Feuchtebestimmung und Porengrößenabschätzung an Estrichen mittels NMR N2 - Nuklear magnetische Resonanz (NMR) etabliert sich zunehmend im Bauingenieurwesen als eine alternative Methode zur zerstörungsfreien Feuchtebestimmung in Baustoffen. Schäden, die durch einen zu hohen Anteil an Flüssigwasser auftreten können, sind Ablösungen, Korrosion, Frostschäden, Induktion von Salzkristallisationen, etc. Aufgrund der Sensitivität für 1H-Protonen, ist NMR eine geeignete Methode zur Feuchtedetektion. Dabei kann laut Theorie zwischen frei, chemisch oder physikalisch gebundenem Wasser differenziert werden, während in der Praxis abhängig von der Messtechnik und Probengröße größtenteils nur das freie Wasser detektierbar ist. Mithilfe der NMR Relaxometrie lassen sich nicht nur Relaxationsabklingkurven ermitteln, sondern auch Relaxationszeitenverteilungen, sowie bei Vollsättigung ggf. eine Porengrößenverteilung ableiten. Darüber hinaus lassen sich erste Annahmen über die Entwicklung der Porensättigung bei Teilsättigung der Probe treffen. Ziel dieser Arbeit war die Untersuchung der zeitlichen Entwicklung der Porensättigung während des natürlichen Trocknungsprozesses (Teilsättigung) sowie die Ermittlung der Porengrößenverteilung an Beispiel von zementgebundenen Estrichen. Für den Versuch wurden zwei zementgebundene Estrichproben nach abgeschlossener Hydratation wieder aufgesättigt. Während des anschließenden natürlichen Trocknungsprozesses wurden regelmäßig NMR-Messungen durchgeführt sowie die Massenentwicklung observiert. Hauptfokus lag auf der zeitlichen und tiefenabhängigen Entwicklung der Relaxationszeitenverteilungen. Bei fortschreitender Trocknung der Proben konnte eine Verschiebung des Maximums der Relaxationszeitenverteilung zu kleineren Zeiten beobachtet werden. Die Ursache liegt zum einen in dem abnehmenden Anteil an freiem Wasser in größeren Poren und zum anderen in dem verhältnismäßig zunehmenden Signalanteil durch Wasser in kleineren Poren. Durch den Vergleich mit Quecksilberporosimetrie und Gas-Adsorptions-Ergebnissen, konnte aus den NMR-Daten eine unimodale Porengrößenverteilung mit einer dominanten Porengröße von 0,08 bis 0,1 µm und eine effektive Oberflächenrelaxivität von ca. 10 bis 30 µm/s abgeleitet werden. T2 - Bauwerksdiagnose 2018 CY - Berlin, Germany DA - 15.02.2018 KW - Estrich KW - Feuchte KW - NMR KW - Porengrößen KW - Relaxometrie PY - 2018 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-468966 UR - https://www.bauwerksdiagnose2018.de/Portals/bauwerksdiagnose2018/P/p11.pdf N1 - Geburtsname von Munsch, Sarah Mandy: Nagel, S. M. - Birth name of Munsch, Sarah Mandy: Nagel, S. M. AN - OPUS4-46896 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klewe, Tim T1 - Zerstörungsfreie Lokalisierung von Flüssigwasser in Schichtaufbauten - Projektvorstellung N2 - Da derzeit keine zerstörungsfreie Alternative zur Lokalisierung von Leitungswasserschäden in Fußböden existiert, werden in der Regel unter hohem zeitlichen und finanziellen Aufwand Sondierungsbohrungen vorgenommen, um das entnommene Material im Labor thermo-gravimetrisch zu untersuchen. Dabei nehmen Leitungswasserschäden mit rd. 2,6 Milliarden Euro jährlich den deutlich größten Posten bei Gebäudeversicherungen ein. Für derartige Fragestellungen werden seit einigen Jahren Neutronensonden eingesetzt. Mit diesem Verfahren ist es möglich, sich einen Überblick über die Gesamtwassermenge in einem definierten Baustoffvolumen zu verschaffen, jedoch kann flüssiges und chemisch gebundenes Wasser nicht unterschieden werden. Daher werden die Messdaten mit den Ergebnissen der Sondierungsbohrungen kalibriert. So können auch große Flächen wie Industriefußböden in relativ kurzer Zeit größtenteils zerstörungsfrei untersucht werden. Da die integrale Messweise der Neutronensonde allerdings keine Tiefenzuordnung eines gefundenen Feuchteschadens zulässt, muss auch diese Information über die Bohrkerne generiert werden. Die Idee des Projekts ist, durch den parallelen Einsatz des Radarverfahrens in Zukunft auf Sondierungsbohrungen verzichten zu können. Nach der Abgrenzung trockener von feuchten Bereichen über die Neutronensonde, wird das Radarverfahren herangezogen, um typische Schadensfälle zerstörungsfrei zu unterscheiden. In systematischen Laborstudien an modular aufgebauten Referenzprobekörpern untersuchen wir die Nachweisgrenzen und Detektionswahrscheinlichkeiten der beiden Verfahren für verschiedene, häufig anzutreffende Fußbodenaufbauten. Anschließend sollen über Datenfusion und Signalverarbeitung innovative Auswertungsansätze entwickelt werden, welche die Messergebnisse von Neutronensonde und Radar automatisiert zur Gewinnung eines höheren Informationsgehalts und zur Klassifizierung der Schadensfälle kombinieren. Im Rahmen des Projekts wird die erarbeitete Vorgehensweise an real geschädigten Objekten getestet, um die Methode zu etablieren sowie Akzeptanz bei Anwendern und Eigentümern zu schaffen. Könnten durch genauere Schadenseingrenzung die Sanierungskosten um nur 4% gesenkt werden, ergäbe sich in Deutschland eine Kostenreduzierung von ca. 100 Million Euro jährlich. T2 - Bauwerksdiagnose 2018 CY - Berlin, BAM, Germany DA - 15.02.2018 KW - Feuchte KW - ZfP KW - Radar KW - Neutronensonde KW - Fußboden PY - 2018 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-446458 AN - OPUS4-44645 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Munsch, Sarah Mandy T1 - Ermittlung der Porosität von Sandsteinen - Vergleich von Quecksilberporosimetrie, Tauchwägung und NMR N2 - Die Porosität sowie die Porengrößenverteilung (PSD) eines Baustoffs sind wichtige petrophysikalische Eigenschaften, die Transportprozesse im Material beeinflussen und im direkten Zusammenhang mit der Schadensanfälligkeit stehen (Frost-Tau-Schäden, Schäden durch Salzeinträge und sauren Regen). Verfahren zur Ermittlung der Porosität stellen die Quecksilberporosimetrie (MIP), das Prinzip der Tauchwägung nach Archimedes (triple weighing method, TWM) und die Nuklear Magnetische Resonanz (NMR) dar. Das Hauptziel dieser Arbeit ist der Vergleich der drei Methoden für die Porositätsbestimmung. Als Untersuchungsmaterial wurde Sandstein gewählt. Als Baustoff wird Sandstein trotz einer teilweise geringen Festigkeit, aber aufgrund seiner Farbvielfalt häufig für Kulturbauten, Gehwegmaterial und Fassaden eingesetzt. Sandsteine weisen zudem meist eine hohe effektive Porosität (bis zu ca. 30 %) und teilweise breite Porengrößenspektren auf, wodurch Feuchte- und Ioneneinträge begünstigt werden und zu z. B. langfristigen Verfärbungen an Sandsteinfassaden führen können. Im Rahmen dieser Arbeit werden die Porositäten von 10 verschiedenen Sandsteinen aus Deutschland und Tschechien bestimmt. Für die Untersuchungen mittels TWM und NMR wurden für jede Sandsteinart zwei zylinderförmige Proben unter Unterdruck mit Leitungswasser aufgesättigt. Beim Vergleich der Verfahren liegt der Fokus insbesondere auf NMR und der verwendeten Gerätetechnik, die mit einer minimalen Echozeit von 50 µs ein Wasserstoffsignal in Sandsteinen aus bis zu ca. 2 nm kleine Poren erfassen kann. Darüber hinaus wird das Auflösungsvermögen von MIP und NMR bezüglich der Poren- bzw. Poreneingangsgrößen diskutiert. Für den Vergleich von NMR und MIP werden an ausgewählten Sandsteinproben ebenfalls die zusätzlich ermittelten PSD in Korrelation zueinander gebracht. Erste Ergebnisse zeigen eine gute Korrelation von NMR- und TWM-Daten, aber teilweise starke Abweichungen zu den mit MIP bestimmten Porositäten. Ergebnisse zu den PSD zeigen teilweise nahezu identische Kurvenverläufe. Jedoch ist die Abschätzung des Umrechnungsfaktors für die NMR-Daten ohne Hinzuziehen von zusätzlichen Referenzverfahren wie Röntgen-Computer-Tomographie oder Spektral Induzierte Polarisation teilweise sehr schwierig. T2 - Bauwerksdiagnose CY - Berlin, Germany DA - 13.02.2020 KW - NMR KW - Porosität KW - Sandsteine KW - Quecksilberporosimetrie KW - Tauchwägung PY - 2020 N1 - Geburtsname von Munsch, Sarah Mandy: Nagel, S. M. - Birth name of Munsch, Sarah Mandy: Nagel, S. M. AN - OPUS4-50405 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Coelho Lima, Isabela A1 - Unger, Jörg F. T1 - Variational Bayesian Inference for structural model update N2 - Appropriate monitoring of transportation infrastructures (e.g. bridges) is of utmost importance to ensure safe operation conditions. Accurate and reliable assessment of such structures can be achieved through the integration of data from non-destructive testing, advanced modeling and model updating techniques. The Bayesian framework has been widely used for updating engineering and mechanical models, due to its probabilistic description of information, in which the posterior probability distribution reflects the knowledge, over the model parameters of interest, inferred from the data. For most real-life applications, the computation of the true posterior involves integrals that are analytically intractable, therefore the implementation of Bayesian inference requires in practice some approximation methods. This paper investigates the application of Variational Bayesian Inference for structural model parameter identification and update, based on measurements from a real experimental setup. The Variational Bayesian method circumvents the issue of evaluating intractable integrals by using a factorized approximation of the true posterior (mean field approximation) and by choosing a family of conjugate distributions that facilitates the calculations. Inference in the Variational Bayesian framework is seen as solving an optimization problem with the aim of finding the parameters of the factorized posterior which would minimize its Kullback-Leibler divergence in relation to the exact posterior. The Variational Approach is an efficient alternative to sampling methods, such as Markov Chain Monte Carlo, since the latter’s accuracy depends on sampling from the posterior distribution a sufficient amount of times (and therefore requiring an equivalent number of computations of the forward problem, which can be quite expensive). T2 - Data Science Summer School CY - École polytechnique Université Paris Saclay, France DA - 25.06.2018 KW - Variational Bayesian KW - Structural monitoring KW - Bayesian inference PY - 2018 AN - OPUS4-45604 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strangfeld, Christoph T1 - Embedded passive RFID-based sensors for moisture monitoring in concrete N2 - Moisture measurements based on passive RFID based sensors. These sensors are embedded into stell reinforced concrete to enable long-term monitoring. T2 - IEEE Sensors 2017 CY - Glasgow, Scotland, UK DA - 30.10.2017 KW - Concrete KW - Embedded sensors KW - RFID based sensors KW - Passive sensors KW - Moisture monitoring PY - 2017 AN - OPUS4-42746 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogel, Christian T1 - Detection, quantification, and treatment of per- and polyfluoroalkyl substances (PFAS) in groundwater (DFEAT-PFAS) N2 - Per- and polyfluoroalkyl substances (PFAS) are a large group of chemicals used in the formulations of thousands of consumer goods. Because of the recent regulations and restrictions on the use of long chain (≥C8) PFAS a significant shift in the industry towards short (C4-C7) and ultrashort (C1-C3) chain alternatives has been recognized the last years. Due to the high polarity and water solubility of ultrashort PFAS, the potential for bioaccumulation is low. However, the high persistence of ultrashort-chain PFAS will result in environmental accumulation, especially in aquatic environments, leading to potential risks for aquatic organisms and increased human external exposure through drinking water. Ultrashort PFAS like trifluoroacetic acid (TFA) are low to moderately toxic to a range of organisms. In the project we are focusing on detecting and removing PFAS, especially ultrashort-chain PFAS from contaminated groundwater. Therefore, we suggest developing and optimizing short- and ultrashort-chain PFAS detection, quantification, and removal. We will design passive sampling devices, which can collect and monitor the temporal profile of PFAS species in groundwater. This will allow us to analyze PFAS contaminations in German and Israeli groundwater using state-of-the-art novel analytical techniques. In addition, contaminated groundwater will be treated via a two-stage process, designed to concentrate the relatively low PFAS concentrations by novel membrane processes including closed-circuit reverse osmosis (CCRO) and mixed matrix composite nanofiltration membranes (MMCM). Afterwards the rejected streams, containing higher concentrations of PFAS will be treated by coagulation and the remaining PFAS adsorbed onto carbonaceous nanomaterials (CNMs). T2 - SETAC Europe CY - Vienna, Austria DA - 11.05.2025 KW - Per- and polyfluoroalkyl substances (PFAS) KW - Groundwater KW - Remediation PY - 2025 AN - OPUS4-63095 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Huschke, Philip T1 - FETI methods - Application to phase-field models N2 - The objective is to apply FETI methods to the phase-field model for brittle fracture in order to speed up the computation time. Due to the fact that the phase-field model yields nonsymmetric, ill-conditioned matrices, special solvers and preconditioners need to be applied to improve robustness and convergence. T2 - ECAM 2017 CY - Kochel am See, Germany DA - 09.10.2017 KW - FETI KW - Phase-field PY - 2017 AN - OPUS4-42606 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Jörg F. T1 - Mechanics group at Federal Institute for Materials Research and Testing N2 - The poster presents the work of the mechanics group in BAM, department 7. The current projects deal with the simulation of concrete on different spatial and temporal scales - ranging from the creation of mesoscale geometries up to fatigue and high strain rate impact phenomena. T2 - COST Meeting 1404 CY - Ljubljana, Slovenia DA - 16.05.2015 KW - Mechanics KW - Contact KW - Multiscale KW - Concrete KW - Constitutive modelling PY - 2015 AN - OPUS4-38647 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jeyifous, Olubunmi Anthony T1 - Correlation of continuously measured in-line process parameters and extruded geometry in 3D concrete printing experiments N2 - Additive manufacturing of concrete structures is a novel and emerging tech-nology. Free contouring in civil engineering, which allows for entirely new designs, is a significant advantage. Although several techniques and ap-proaches demonstrate these advantages, quality control during printing is highly challenging and rarely applied. Due to the continuous mixing process used in 3D concrete printing, it is impossible to exclude variations in the dry mixture or water content, and a single test sample is insufficient to represent the whole structure. A defect in one layer during printing can affect the in-tegrity of the entire structure. Therefore, continuous and real-time process monitoring is required to record and document the printing process. At the Bundesanstalt für Materialforschung und -prüfung (BAM), a test rig for 3D concrete printing was developed to monitor the properties during the printing process. This study investigates the relationship between geometric accuracy and process parameters (pressure, pump torque, print speed, layer height, water content) in extrusion-based 3D concrete printing. Using a high-precision laser scanner, the geometric measurements of printed concrete ele-ments are evaluated in real-time. The concrete elements are printed under controlled conditions with varied process parameters. Preliminary findings indicate a significant correlation between process variables and geometric ac-curacy. T2 - Fourth RILEM International Conference on Concrete and Digital Fabrication CY - Munich, Germany DA - 04.09.2024 KW - 3D concrete printing KW - Geometric accuracy KW - Process monitoring KW - Quality control PY - 2024 DO - https://doi.org/https://doi.org/10.1007/978-3-031-70031-6_15 AN - OPUS4-61532 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Küttenbaum, Stefan T1 - Beurteilung von Bestandsbauwerken mit zerstörungsfrei gemessenen Daten - Erprobung eines neuen Konzepts an der Regenbrücke Roding N2 - Fortwährend besteht ein wesentlicher Bedarf an Nachrechnungen von bestehenden Brückenbauwerken. Die Zuverlässigkeit der Berechnungsergebnisse hängt insbesondere von der Anzahl und von der Qualität der einbezogenen Informationen ab. Durch die Anwendung von zerstörungsfreien Prüfmethoden können quantitative Informationen gesammelt werden, die für die Beurteilung der Tragwerke sowohl relevant als auch ausreichend genau sind. Die gemessenen Daten können explizit in probabilistische Berechnungsmodelle für die Nachrechnung einer Brücke einfließen. Dadurch wird das Modell sukzessive an die Realität angenähert — in anderen Worten: "zugeschärft". Die Zuverlässigkeit der Ergebnisse der Nachrechnung steigt. In diesem Posterbeitrag wird ein entwickeltes Konzept für die Verwendung von Messergebnissen (anstelle von deterministischen Informationen und Annahmen) im statischen Nachweis zusammengefasst. Am Fallbeispiel einer Spannbetonbrücke werden die Vorteile des dargestellten Ansatzes aufgezeigt. Die Messgrößen (hier die Positionen der Längsspannglieder) und die Messstrategien können anhand von Sensitivitätsanalysen definiert und die Anforderungen an die Messergebnisse aus der statischen Berechnung spezifiziert werden. Die Auswirkungen a) der Messunsicherheit auf die Tragwerkszuverlässigkeit sowie b) von gegenüber den vor den Messungen verfügbaren Informationen abweichenden Messwerten sind am Beispiel der Lokalisierung der Längsspannglieder durch Ultraschall- und Radarmessungen dargestellt. T2 - Fachtagung Bauwerksdiagnose 2020 CY - Berlin, Germany DA - 13.02.2020 KW - Spannbetonbrücke KW - Zerstörungsfreie Prüfung KW - Messung KW - Nachrechnung PY - 2020 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-504014 AN - OPUS4-50401 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Matthias A1 - Rübner, Katrin A1 - Burkert, Andreas T1 - Einsatz der Quecksilberporosimetrie zur Charakterisierung von Feinkornbetonen für elektrochemische Untersuchungen N2 - Im Rahmen eines DFG-Forschungsvorhabens (FOR 537) wird ein Teilprojekt an der BAM bearbeitet. Ziel dieser Arbeit ist die quantitative Beschreibung und Bewertung des Korrosionsfortschrittes an Stahlproben mit kleinen Kathodenflächen (Eigenkorrosion) mittels elektrochemischer Messungen. Für die Untersuchungen wurden Betonproben mit eingebetteten Stahlelektroden hergestellt. Dabei wurden gezielt betontechnologische Parameter variiert. Dabei ist der Beton als Elektrolyt zu betrachten. Nach bestimmten Zeitintervallen werden die Betonproben aufgebrochen und die eingebetteten Stahlelektroden durch visuelle Inspektion und anschließende Bestimmung des Masseverlustes bewertet. Zur Charakterisierung des Betons (Elektrolyt) dient das Verfahren der Quecksilberporosimetrie. Mit dem Verfahren lassen sich die Zusammenhänge zwischen den betontechnologischen Parametern und der Porenstruktur aufzeigen und mittels der umfangreichen Variation der Betonparameter die Auswirkung auf den Korrosionsfortschritt nachweisen. T2 - XIII. Workshop über die Charakterisierung von feinteiligen und porösen Festkörpern CY - Bad Soden, Germany DA - 14.11.2006 PY - 2006 AN - OPUS4-14294 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grunert, Wiebke T1 - Green primary explosives – a step towards more sustainable mining N2 - This project aims at breaking down barriers that hinder the wide application of green primary explosives. In a joint effort of several organisational units at BAM we connect chemistry, process engineering and plant and process safety to investigate how green primary explosives can be produced in an economical and safe process. T2 - 46. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 25.04.2025 KW - Green explosives KW - Lead-free KW - Detonators KW - Process technics PY - 2025 AN - OPUS4-62996 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grunert, Wiebke T1 - ODYSSEUS N2 - Vorstellung des Forschungsprojekts ODYSSEUS und Darstellung der Aufgaben der BAM. Hierbei sollen neue Instrumente chemische Ausgangsstoffe zur Herstellung von Explosivstoffen und Bomben aufspüren, um zukünftig Anschläge zu verhindern. T2 - 46. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 25.04.2025 KW - Home-made explosives KW - Anschläge KW - Bomben KW - Ausgangsstoffe PY - 2025 AN - OPUS4-62995 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohrer, Christian T1 - Initiierungsvermögen von Anzündern (sonstige Pyrotechnik für Fahrzeuge) an Sekundärsprengstoffen N2 - Um eine schwere missbräuchliche Verwendung von Pyrotechnik zu verhindern, ist eine mögliche Initiierung von Sekundärsprengstoffen durch Pyrotechnik gemäß der wesentlichen Sicherheitsanforderungen der Richtlinie 2013/29/EU nicht zulässig. Aus diesem Grund müssen pyrotechnische Gegenstände auch in dieser Hinsicht bewertet werden. In einem pränormativen Forschungsansatz wurden leistungsfähige und für die Allgemeinheit vergleichsweise leicht verfügbare Anzünder aus dem Bereich der Fahrzeugpyrotechnik speziellen Prüfungen für die Bewertung dieser Auslösefähigkeit unterzogen. T2 - 46. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 25.04.2025 KW - Sekundärsprengstoffe KW - Pyrotechnik KW - Konformuitätsbewertung PY - 2025 AN - OPUS4-62997 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Innovative Versuchsmethodik - INFUKON Performance-orientierte Dauerhaftigkeitsuntersuchung gefügter Bauteile/Konstruktionen N2 - Permanent erfolgen konstruktive Verbesserungen der Bauwerke, stoffliche Weiterentwicklungen der Baustoffsysteme sowie technologische Optimierungen der Bauprozesse. Insbesondere für Fugenkonstruktionen und Fugenfüllstoffsysteme fehlt ein realitätsnahes, stoffneutrales und vergleichbares versuchstechnisches Untersuchungs- und Bewertungskonzept. Der Posterbeitrag „Innovative Versuchsmethodik - INFUKON" möchte auf eine neu entwickelte Versuchsmethodik zur Funktions- und Dauerhaftigkeitsuntersuchung von Fugenlösungen im Bauwesen hinweisen. Methodische Grundlage der erforderlichen Neuentwicklung ist eine funktionsanalytische Herangehensweise entsprechend dem „performance concept". Aus der Analyse der maßgebenden Einwirkungen und daraus erforderlichen Funktions- und Dauerhaftigkeitsprinzipien wurde ein multimodal aufgebauter Versuchsstand mit größtmöglicher Einsatzvielfalt entwickelt. Verschiedenartige mechanische Einwirkungen in mehraxialer Wirkrichtung können einzeln oder in unterschiedlichster Kombination mit verschiedenartigen klimatischen und zusätzlichen Sonderbeanspruchungen überlagert auf realitätsnah aufgebaute Systemprobekörper aufgebracht werden. Die derart frei konfigurierbaren Beanspruchungsfunktionen können die maßgebenden Beanspruchungszustände bauteilgerecht widerspiegeln. Erstes Anwendungsgebiet sind Untersuchungen zur Optimierung des Fugenbereiches von hochbeanspruchten Betonfahrbahndecken. Eine Übertragung der Versuchsmethodik auf weitere Dehnfugenkonstruktionen oder aber auch Funktions- und Dauerhaftigkeitsuntersuchungen sonstiger gefügte Bauteile wurde weitestgehend im gefundenen versuchstechnischen Lösungsansatz implementiert. T2 - Jubiläumskongress 100 Jahre Deutscher Straßen- und Verkehrskongress CY - Bonn, Germany DA - 23.10.2024 KW - Innovative Versuchsmethodik KW - Infrastruktur KW - Performance-concept KW - Innovative Untersuchungsmethodik PY - 2024 AN - OPUS4-61467 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Johann, Sergej T1 - Investigation of long-term embedded RFID sensors for structural health monitoring N2 - Ensuring the health of civil engineering structures is crucial for the safety and longevity of the built environment. In this direction, structural health monitoring (SHM) has been increasingly employed, providing insight into the structural behavior, based on sensor data representing structural responses. This paper investigates the plausibility of embedding sensors into concrete structures for SHM, leveraging radio frequency identification (RFID) technology, in an attempt to enable the passive operation of sensors without continuous power supply and to reduce potential sources of interference. In contrast to conventional SHM sensors, the uninterrupted operation of embedded sensors must be ensured because post-installation interventions are either impractical or impossible. RFID technology enables wireless data acquisition and energy transmission without mechanical impact on civil engineering structures, although it may be challenging when RFID sensors are embedded in concrete. This study presents a durable passive embedded RFID sensor system (i.e., a system without batteries), including the selection of components, such as housing and cable materials, suitable for withstanding the aggressive environment of concrete without damaging the sensitive electronics or contaminating the data recorded by the sensors. The proposed sensor system is validated in laboratory tests, the results of which provide insights into the influence of each component and are intended to advance the implementation of embedded sensor systems. T2 - IEEE Sensors 2024 CY - Kobe, Japan DA - 20.10.2024 KW - Structural health monitoring KW - RFID-based sensors KW - Smart sensors KW - Embedded sensors PY - 2024 AN - OPUS4-62163 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weise, Frank A1 - Porzig, Ekkehard T1 - Zerstörungsarme Bauzustandsanalyse selbsttätig vorgespannter Stahlbetonfachwerkträger im Flughafen Berlin-Tempelhof N2 - - einer der größten zusammenhängenden Gebäudekomplexe in Europa - Anfang der dreißiger Jahre von Prof. Sagebiel geplant, 1936 Baubeginn, heute zu 70%fertiggestellt - steht heute wegen großer verkehrs- und baugeschichtlicher Bedeutung unter Denkmalschutz - in Abfertigungshalle befindliche Fachwerkträger mit selbsttätiger Vorspannung zeigen Anfang des Spannbetonbaus - ab 1997 Überarbeitung des Nutzungskonzeptes der Räume über den Fachwerkträgern durch Berliner Flughafengesellschaft - Erfordernis der Abschätzung der Tragfähigkeit der Fachwerkträger T2 - Fachtagung Bauwerksdiagnose - Praktische Anwendungen Zerstörungsfreier Prüfungen CY - Munich, Germany DA - 21.01.1999 KW - Fachwerkträger KW - Mechanische Kennwertermittlung KW - Vergleichsstahlproben PY - 1999 AN - OPUS4-36517 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolf, Christoph T1 - Optimization Framework for Powder Bed 3D Printed Concrete Structures under Various Constraints N2 - The fusion of 3D printing with concrete has transformed large scale construction, accelerating creative design possibilities. In recent years, multiple printing techniques have been developed and are still under investigation. The powder bed technique enables overhang constructions, thereby increasing design flexibility. To maximize the advantages of those printing techniques, a holistic approach is required taking topology optimization through finite element analysis into account. The challenge is to consider a range of constraints, from material to geometrical to manufacturing. The current research focuses on the development of a holistic approach to large-scale 3D powder bed printed concrete structure optimization, navigating the in-tricacies of constraints, leveraging the advantages of powder-based printers, and integrating essential information from material tests. A workflow starting from geometry input and ending with printing instructions is derived, minimizing user interaction, and offering fast and reliable results for different structures. Starting from a geometric model of the global design with the required load cases, the geometry is optimized with respect to reduce the mass and thus CO2 emissions. Thereby, the topology optimization includes various constraints: stress con-straints (mitigating tension and limit compressive stress using Drucker-Prager based models), geometric constraints (preserving specific surfaces from optimi-zation), and manufacturing constraints (controlling member size and avoiding trapped powder). Different objective functions, like minimizing compliance or mass are considered in this study. The process receives input from upstream ma-terial tests, offering insights into strength, stiffness and possible anisotropy. This integration of material testing enhances the accuracy and reliability of the opti-mization, aligning the design with real-world behavior of 3D printed concrete. An important aspect of the workflow is the segmentation of the optimized global structure into substructures, aligning with the size limitations of the 3D powder-bed printer. As final output of the developed workflow, printer specific fabrica-tion instructions are generated for each substructure. The developed optimization framework is demonstrated in the design of a multiperson shading element. T2 - 4th RILEM International Conference on Concrete and Digital Fabrication CY - Munich, Germany DA - 04.09.2024 KW - Topology Optimization KW - Powder Bed 3D Printing KW - Segmentation and Substructure KW - Modelling KW - Material Testing PY - 2024 AN - OPUS4-61021 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Use of recycling materials for concretes T2 - NANOCEM Conference 2006 CY - Copenhagen, Denmark DA - 2006-04-25 PY - 2006 AN - OPUS4-12370 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strangfeld, Christoph T1 - Bore hole probe for ultrasound-based quality control of sealing constructions N2 - Several countries, which use or used nuclear power, started to destruct nuclear power plants. Thus, large amounts of radioactive waste have to be stored safely during the next decades. Large underground caverns will be used a nuclear waste disposal. Once the cavern is full, a sealing construction is required. The sealing should avoid the contact to any fluids or substances of the storage barrels and reduce hazardous radiation. T2 - International Symposium Non-Destructive Testing in Civil Engineering CY - Zurich, Switzerland DA - 16.08.2022 KW - Ultrasonic testing KW - Nuclear waste PY - 2022 AN - OPUS4-55530 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Marc Benjamin T1 - Combined cell and nanoparticle models for TOPAS to study radiation dose enhancement by Monte-Carlo based particle scattering Simulations N2 - Dose enhancement by gold nanoparticles (AuNP) increases the biological effectiveness of radiation damage in biomolecules and tissue. To apply them effectively during cancer therapy their influence on the locally delivered dose has to be determined.[1] Hereby, the AuNP locations strongly influence the energy deposit in the nucleus, mitochondria, membrane and the cytosol of the targeted cells. To estimate these effects, particle scattering simulations are applied. In general, different approaches for modeling the AuNP and their distribution within the cell are possible. In this work, two newly developed continuous and discrete-geometric models for simulations of AuNP in cells are presented. [2] These models are applicable to simulations of internal emitters and external radiation sources. Most of the current studies on AuNP focus on external beam therapy. In contrast, we apply the presented models in Monte-Carlo particle scattering simulations to characterize the energy deposit in cell organelles by radioactive 198AuNP. They emit beta and gamma rays and are therefore considered for applications with solid tumors. Differences in local dose enhancement between randomly distributed and nucleus targeted nanoparticles are compared. Hereby nucleus targeted nanoparticels showed a strong local dose enhancement in the radio sensitive nucleus. These results are the foundation for ongoing experimental work which aims to obtain a mechanistic understanding of cell death induced by radioactive 198Au. T2 - #RSCposter 2023 CY - Online meeting DA - 28.02.2023 KW - AuNP KW - Beta decay KW - Brachytherapy KW - Cancer treatment KW - Clustered nanoparticles KW - DNA KW - DNA damage KW - Dosimetry KW - Energy deposit KW - Geant4 KW - Geant4-DNA KW - Gold Nanoparticles KW - LEE KW - Livermore model KW - Low energy electrons KW - MCS KW - Microdosimetry KW - Monte-Carlo simulation KW - NP KW - OH radical KW - Penelope model KW - Radiation damage KW - Radiation therapy KW - Radiationtherapy KW - Radiotherapy KW - Radioactive decay KW - Radiolysis KW - Simulation KW - TOPAS KW - TOPAS-nbio KW - beta particle KW - particle scattering PY - 2023 AN - OPUS4-57060 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herbst, Tristan T1 - Einsatzpotenzial und nachhaltige Verwertung von Hausmüllverbrennungsaschen als Gesteinskörnungen im Beton N2 - Im Hinblick auf eine nachhaltige Entwicklung sollen nach dem KrW/AbfG der Rohstoffeintrag und der Abfallaustrag in den Lebensphasen eines Bauwerks durch weitgehende Verwertung von Sekundärrohstoffen (Reststoffen) möglichst gering gehalten werden. Ein Einsatz von Reststoffen wie Hausmüllverbrennungsaschen (MV-Aschen) im Betonbau kann potenziell einen wesentlichen Beitrag zur nachhaltigen Entwicklung leisten. T2 - Tagung Bauchemie CY - Freiberg, Germany DA - 08.10.2009 PY - 2009 AN - OPUS4-22966 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Sebastian A1 - Meng, Birgit A1 - Selleng, Christian T1 - A new sample holder for fast xrd investigation on UHPC N2 - A new sample holder is described in this poster. It was developed in BAM for fast XRD investigation on UHPC (ultra high performance concrete). Results measuring solid, i.e. not pulverized, samples are shown. T2 - GeoBerlin 2015 CY - Berlin, Germany DA - 04.10.2015 KW - Building Materials KW - UHPC KW - X-ray diffractometry PY - 2015 AN - OPUS4-36949 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin A1 - Haamkens, Frank A1 - Linde, O. T1 - Untersuchungen an Beton mit Hausmüllverbrennungsasche als Gesteinskörnung N2 - Hausmüllverbrennungsasche soll aufgrund ihrer chemisch-mineralogischen Eigenschaften als Gesteinskörnung zur Herstellung von Normalbetonen eingesetzt werden. Durch Bestandteile, wie Chloride, metallisches Aluminium und Altglasfragmente, entstehen aber in kürzester Zeit beträchtliche Betonschäden. Durch zusätzliche mechanische, chemische oder thermische Aufbereitungsschritte können diese betonschädigenden Inhaltsstoffe minimiert werden. Dadurch lässt sich die Qualität der Asche soweit verbessern, dass sie gut zur Betonherstellung verwendbar ist. T2 - GDCh-Fachtagung Bauchemie CY - Siegen, Germany DA - 27.09.2007 KW - Normalbeton KW - Chloride KW - Aluminium KW - Altglasfragmente KW - Betonschäden PY - 2007 AN - OPUS4-36506 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin A1 - Fritz, Thomas T1 - Untersuchungen zur Präzision von Porositätsmessungen an Zementmörtel N2 - Ermittlung der Präzision des Messverfahrens Quecksilberporosimetrie für die Materialklasse Zementmörtel durch Ringversuche nach ISO 5725 T2 - 10. Workshop über die Charakterisierung von Feinteiligen und Porösen Festkörpern CY - Bad Soden, Germany DA - 14.11.2000 KW - Quecksilberporosimetrie KW - Ringversuche KW - ISO 5725 PY - 2000 AN - OPUS4-36512 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin A1 - Rübner, J. A1 - Knölle, G. A1 - Tschritter, H. T1 - Porosität neuer anorganisch-organischer Nanoverbunde N2 - Kiefernholz wird durch Imprägnieren mit einem Vorkondensat aus organischen Disäuren und Glycerin, das kolloidale Kieselsäure enthält, sowie nachfolgende Ofenhärtung in Kieselsäure/Alkydharz/Holz-Verbunde umgewandelt. Diese Nanoverbunde haben eine geringere Porosität als Holz, da Teile der Holzzellen mit Harz und Kieselsäure ausgefüllt sind. Die kugelförmigen, etwa 60 nm großen (SiO1)x-Teilchen liegen in der Polymermatrix mikrophasensepariert vor. Der kolloidale Zustand der eingebrachten Polykieselsäure bleibt erhalten. Durch ihr günstiges Eigenschaftsprofil sind die Verbundmaterialien als modifizierter Holzbaustoff interessant. T2 - 3. Tagung Bauchemie CY - Würzburg, Germany DA - 27.09.2001 KW - Kiefernholz KW - Disäuren KW - Glycerin KW - Kieselsäure KW - Holzbaustoff PY - 2001 AN - OPUS4-36507 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - HYTEGRA - Hydrothermalgranulate - Rohstoffliches Recycling von Mauerwerkbruch N2 - Ziel des Projekts HYTEGRA ist die Herstellung leichter Gesteinskörnungen durch hydrothermale Behandlung quarz- und kalkreicher Reststoffe. Als Ausgangsstoffe dienen heterogener Mauerwerkbruch aus Bau- und Abbruchabfällen als SiO2-Träger und Papierasche aus dem Altpapierrecycling als CaO-Träger. Für beide Reststoffe besteht derzeit ein Verwertungsdefizit. Das Verfahren beruht auf der Idee des rohstofflichen Recyclings, d. h. die chemisch-mineralogischen Stoffeigenschaften werden für die hydrothermale Stoffumwandlung genutzt. Bei der Härtung der Hydrothermalgranulate bilden sich Calciumsilicathydrat-Phasen (CSH) aus der Reaktion zwischen Quarzpartikeln und Kalk im Autoklav bei 200 °C und 16 bar Sattdampf. T2 - Innovationstag Mittelstand des BMWK am 22. Juni 2022 CY - Berlin, Germany DA - 23.06.2022 KW - Mauerwerkbruch KW - Papierasche KW - Rohstoffliches Recycling KW - Leichte Gesteinskörnung KW - Bodenfilter PY - 2022 AN - OPUS4-55552 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sunkavalli, Viswa T1 - Scaling and Aspect Ratio Effects on Ultrasonic Signal Generated by Fluidic Oscillator N2 - Traditional ultrasonic non-destructive testing methods in civil engineering require the use of coupling agents, leading to prolonged and labor-intensive measurement procedures along with the risk of surface damage. To alleviate these concerns, air-coupled ultrasonic actuation has been introduced as an effective alternative. However, the power loss due to impedance mismatch at the interfaces remains an important limitation. To mitigate the power losses at the interfaces while characterizing the specimen thickness, we employ the fluidic oscillator as an ultrasonic source, wherein air acts as both the operating and coupling medium. The fluidic oscillator generates signals through self-sustained oscillations of the exiting air jet under continuous pressurized air supply, and therefore, eliminates the need for intricate design and manufacturing processes. The frequency spectrum characteristics and time-averaged acoustic fields of the fluidic oscillators are shown for the three different configurations that were designed by scaling the aspect ratio and geometry to 3 times the baseline and an additional 60% of baseline volume respectively. Our preliminary investigations highlighted the dependence of the dominant spectral characteristics of a given fluidic oscillator on the mass flow rate of input air and scaling in accordance with the literature. T2 - 187th Meeting of the Acoustical Society of America CY - Online meeting DA - 19.11.2024 KW - Fluidic Oscillator KW - Scaling KW - NDT-CE PY - 2024 AN - OPUS4-61724 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Munsch, Sarah Mandy T1 - 1H NMR Relaxometry: A Reliable Tool for Predicting Durability Properties? N2 - Resistance to carbonation and chloride migration are critical durability properties in cementitious construction materials. The ingress of CO2 and chlorides can lead to concrete deterioration and reinforcement corrosion, underscoring the importance of ensuring high resistance to these durability-reducing factors. Traditional methods, such as determinating the carbonation coefficient using standard procedures, are time-consuming and resource-intensive. These tests typically require 42 days of preconditioning, followed by 70 days before the final results can be determined using a phenolphthalein test, for a total duration of 112 days. In addition, some test chambers can only accommodate four samples at a time. In this study, we investigate whether 1H NMR relaxometry can effectively predict not only the carbonation resistance, KAC,3%, but also the chloride migration coefficient, DRCM, and the compressive strength, fc, of concrete, providing a method that could potentially streamline and accelerate the material development process by directing us quickly to potentially well-suited formulations. We performed measurements on non-carbonated fully saturated concrete and mortar samples at 28, 56, and 92 days using the NMR tomograph at BAM (8.9 MHz). Notably, the NMR measurements taken at 28 days showed no significant differences, suggesting that this timeframe is sufficient for meaningful results. The samples analyzed were drill cores, each 70 mm in diameter and approximately 120 mm in height. The NMR features we focused on included the initial amplitude E0, the x and y values of the dominant T2 relaxation time, and the logarithmic mean of the T2 relaxation time distribution. Another key feature was the surface relaxivity, which was determined by comparing the NMR curves with results from mercury intrusion porosimetry. We examined the correlation of these NMR features with the aforementioned durability properties, which were determined in a laboratory on sister samples using standard procedures. No chloride migration tests were performed on the mortar samples, and the carbonation procedure was carried out unter atmospheric conditions. The preliminary results show that the correlation factors for the NMR features with the carbonation coefficients of concrete were particularly remarkable. The strongest correlations were observed for the dominant relaxation time and the logarithmic mean, with values approaching 1. The preliminary results also indicate that there are high correlations between the compressive strength and amplitude-related features. In contrast, no strong correlations are observed for the DRCM. Although the results related to the mortar samples are still being analyzed, these initial correlations suggest that 1H NMR relaxometry could be a valuable tool for early assessment of material properties. Furthermore, the rapid and non-destructive nature of NMR measurements, requiring only a few minutes per sample, suggests that this technique has the potential to significantly accelerate the process of evaluating durability properties in cementitious materials. This capability also paves the way for the use of NMR features as input for AI-driven predictive models. T2 - Magnetic Resonance in Porous Media 2024 CY - Tromso, Norway DA - 26.08.2024 KW - Nuclear magnetic resonance KW - SLAMD KW - Carbonation KW - Durability PY - 2024 AN - OPUS4-61058 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönsee, Eric T1 - Investigations on multi-sensor data for monitoring volume flow N2 - Extrusion based 3D concrete printing (3DCP) is a growing technology because of its high potential for automating construction and the new possibilities of de-sign. In conventional construction methods, a sample is taken to be representative for one material batch. However, in 3DCP continuous mixing is used which re-sults in variations during the mixing process. Therefore, one sample is not repre-sentative for the entire structure. This leads to the necessity of continuous and re-al-time process monitoring. At the Bundesanstalt für Materialforschung und -prüfung (BAM), Berlin, a test rig is developed to allow for comprehensive monitoring of the printing process. For this purpose, sensors for torque, temperature, pressure and moisture are in-stalled into the pipe. A laser scanner is installed at the nozzle to acquire infor-mation about the geometry of the extruded material. This study focuses on the variations of pressure and temperature which are caused by changes in the material due to the ongoing mixing process. Preliminary results indicate that changes in the material properties cause changes in the sensor signals as well. These changes can be observed in various sensors with a delay, caused by material which is carried downstream. In the following, the data is ana-lysed to investigate if the changing material and the so caused change in pressure can be used to calculate volume flow. T2 - Digital Concrete 2024 CY - Munic, Germany DA - 04.09.2024 KW - 3D concrete printing KW - Monitoring KW - Pressure PY - 2024 AN - OPUS4-60997 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bahlmann, Stefanie A1 - Rübner, Katrin A1 - Meng, Birgit T1 - Untersuchungen zur Verwertung industrieller Reststoffe als Ersatz von Primärrohstoffen in Mörtel und Beton N2 - Um den Abbau primärer Rohstoffe zu reduzieren, wurden deponierte oder niederwertig eingesetzte industrielle Reststoffe hinsichtlich einer höherwertigen Verwendung im Betonbau untersucht. Zur Bewertung des Einsatzpotentials als Zementbestandteil oder Betonzusatzstoff erfolgte zunächst eine chemisch-mineralogische und betontechnologische Charakterisierung der Materialien. Reststoffe, die die normativen Anforderungen hinsichtlich der Zementzusammensetzung erfüllen, wurden anschließend zu verschiedenen Anteilen als Zementsubstitut in Mörtel eingesetzt. In vergleichenden Untersuchungen erfolgte die Ermittlung der Frisch- und Festmörteleigenschaften. Kalorimetrische Untersuchungen sollten die Auswirkungen der Reststoffe auf die Zementhydratation zeigen. Ausgewählte Untersuchungsergebnisse an Reststoffen aus der Industrieabwasseraufbereitung, dem Altpapierrecycling, der Biomasseverbrennung und der Metallurgie werden vorgestellt. T2 - 17. Internationale Baustofftagung IBAUSIL 2009 CY - Weimar, Germany DA - 23.09.2009 KW - Industrieabwasseraufbereitung KW - Altpapierrecycling KW - Biomasseverbrennung KW - Metallurgie PY - 2009 AN - OPUS4-36516 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wallau, Wilma T1 - Alkali-Kieselsäure-Reaktion in Beton - Entwicklung eines Prognoseverfahrens N2 - Zur Vermeidung der schädigenden Alkali-Kieselsäure-Reaktion in Betonbauwerken wird die Alkalireaktivität von Gesteinskörnungen im Vorhinein getestet. Der 60°C-Betonversuch ermöglicht eine vergleichsweise schnelle Einschätzung nach fünf-monatiger Testzeit. Dazu wird die Dehnung von Betonprüfkörpern, die mit der zu testenden Gesteinskörnung hergestellt wurden, manuell alle 28 Tage gemessen. Ein alternatives, an der BAM in den vergangen Jahren entwickeltes Verfahren setzt Dehnungssensoren ein, um kontinuierlich und online zu messen. Die Dehnungskurven sind eine gute Grundlage sowohl für die Prognose vom Expansionsverhalten während des Tests als auch für die Validierung von Expansionsmodellen. T2 - 3. Workshop im Themenfeld Material zu den Schwerpunktthemen "Laufende Projekte und neue Aktivitäten" CY - Berlin, Germany DA - 12.10.2016 KW - Baustoffe KW - Alkali-Kieselsäure-Reaktion PY - 2016 AN - OPUS4-40156 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stohl, Leonie T1 - Bioreceptivity of structured concrete panels N2 - Understanding the fundamentals of bioreceptivity enables the developement of functionalized materials. Concrete as the most used building material worldwide is of special interest as microbially greened panels may represent an alternative to classic façade greening with plants. � This project includes extensive outdoor experiments, in which eight differently structured concrete panels are weathered under different conditions, aiming to grow a stable biofilm of photosynthetic eukaryotic organisms. Documentation and data analysis of this experiment will be demonstrated using an example of one of the surfaces. T2 - Word Green Infrastructure Congress 2023 CY - Berlin, Germany DA - 27.06.2023 KW - Bioreceptivity KW - Concrete KW - Material design PY - 2023 AN - OPUS4-57919 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Offenporiger Asphalt - Porenstrukturanalyse - Entwicklung von Mess- und Auswerteverfahren zur Strukturaufklärung T2 - Abschlussveranstaltung zum Forschungs-Verbundprojekt "Leiser Straßenverkehr" CY - Berlin, Germany DA - 2009-09-02 PY - 2009 AN - OPUS4-22222 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nguyen, Ngoc Tam Thi T1 - Polymer Matrix Composite (PMC) piping for hydrogen applications N2 - A significant step towards achieving climate neutrality in the European Union (EU) by 2050 is the conversion of the energy supply to renewable energy sources. The availability of hydrogen (H₂) as a flexible energy source in sufficient quantities is currently a central challenge. At present, hydrogen is mainly produced from fossil fuels such as natural gas, while water electrolysis only contributes 4% of total production. Less than 0.1 % of global production comes from renewable energy sources [IRE20, NN17]. Compared to the production of grey hydrogen, the production of green hydrogen with PEM electrolysers is still associated with high costs. Reducing the procurement and production costs of PEM electrolysers is therefore a key factor in realising the goals of the EU's hydrogen strategy. Around 50 % of the system costs are attributable to the system peripherals, meaning that savings can be achieved through the standardisation of system components and the use of more cost-efficient materials [Tja17, IRE20]. Currently, cost-intensive steel materials are used to guide media systems and cooling circuits in the plant periphery. Substitution by polymer materials offers a high cost-saving potential due to automated production processes and simple joining techniques. In the collaborative project ‘PolyH2Pipe’, which is being carried out by the Institute of Plastics Processing in Industry and Craft (IKV), the Welding and Joining Institute (ISF) and BAM-5.3, continuous fibre-reinforced thermoplastic (TP-FR) pipe systems are being designed, joining techniques developed and the requirements for the media piping validated. The objective of the research project is to conduct preparatory measures to initiate market launch activities for large-scale production of TP-FR media pipes for H2 electrolyser and fuel cell systems. In the context of the poster presentation, the overarching project and the BAM sub-project will be presented with initial test results. T2 - 29. Nationales SAMPE Symposium CY - Aachen, Germany DA - 02.04.2025 KW - Hydrogen KW - Polymer Matrix Composites KW - Electrolyser KW - Piping PY - 2025 AN - OPUS4-63133 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolf, Julia T1 - Grundlagenuntersuchungen von Ultraschall-Sensoren in Beton T2 - DGZfP Jahrestagung CY - Dresden DA - 2013-05-06 PY - 2013 AN - OPUS4-32993 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heunisch, Andreas A1 - Francke, T. T1 - LIQUIDA-Sky Project: Electronically Tunable Filters for K-Band Satellites based on Microwave Liquid Crystal Technology T2 - 4. Nationale Konferenz - Satellitenkommunikation in Deutschland CY - Bonn, Germany DA - 2015-03-25 PY - 2015 AN - OPUS4-32924 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grehn, M. T1 - The dissociation energy as a parameter for the ablation threshold fluence upon fs-laser irradiation T2 - European Materials Research Society (EMRS) Spring Meeting 2015, Symposium CC "Laser and plasma processing for advanced applications in material science" CY - Lille, France DA - 2015-05-11 PY - 2015 AN - OPUS4-32925 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kraehnert, R. T1 - Electrochemically dealloyed Platinum with hierarchical pore structure as highly active catalytic coating T2 - 27. Deutsche Zeolith-Tagung CY - Oldenburg, Germany DA - 2015-02-25 PY - 2015 AN - OPUS4-32932 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holzweber, Markus T1 - Mutual Lewis-Acid Base Interaction of Cations and Anions in Ionic LIquids T2 - JCF Berlin 2013 CY - Berlin, Germany DA - 2013-03-06 PY - 2013 AN - OPUS4-32944 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhm, S. T1 - Tribological performance of near- and sub-wavelength femtosecond laser-induced periodic surface structures on titanium T2 - Photonics West, SPIE Conference 9351 on Laser-based Micro- and Nanoprocessing IX CY - San Francisco, California, United States of America DA - 2015-02-10 PY - 2015 AN - OPUS4-32957 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert T1 - An Ultrasound Monitoring System For Concrete Structures T2 - Istanbul Bridge Conference CY - Istanbul, Türkei DA - 2014-08-11 PY - 2014 AN - OPUS4-32998 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prager, Jens T1 - Online-Überwachung des Bauteilzustandes von Eisenbahn-Radsatzwellen mittels geführter Ultraschallwellen T2 - DACH-Jahrestagung 2015 CY - Salzburg, Österreich DA - 2015-05-11 PY - 2015 AN - OPUS4-33167 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Illerhaus, Bernhard T1 - Vom Nutzen eines 4k x 4k Detektors für die Computertomographie T2 - DGZfP Dach-Jahrestagung 2015 CY - Salzburg, Austria DA - 2015-05-10 PY - 2015 AN - OPUS4-33185 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bandow, Nicole T1 - Mobility of Cd in soils fertilzed with sewage sludge containing Cd pigments T2 - SETAC Europe CY - Barcelona, Spanien DA - 2015-05-03 PY - 2015 AN - OPUS4-33127 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Eine robuste Prozessanalytik für die Reaktivabsorption von CO2 aus in industriellen Gasströmen basierend auf Onlin-NMR- und Raman-Spektroskopie T2 - 9. Interdisziplinäres Doktorandenseminar CY - Berlin DA - 2015-02-22 PY - 2015 AN - OPUS4-33131 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - High-pressure qNMR studies of fluids and gases T2 - 3rd Annual Practical Applications of NMR in Industry Conference (PANIC) CY - San Diego, USA DA - 2015-02-09 PY - 2015 AN - OPUS4-33134 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - A robust method for process monitoring of reactive absorption of CO2 in industrial gas streams based on Online-NMR- and Raman spectroscopy T2 - 1. Symposium NMRPM "Quantitative NMR Methods for Reaction and Process Minitorig" CY - Kaiserslautern DA - 2015-01-15 PY - 2015 AN - OPUS4-33135 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Eine robuste Protessnalytik für die Reaktivabsorption von CO2 aus industriellen Gasströmen basierend auf Online- NMR- und Rama-Spektroskopie T2 - 10. Kolloqium des Arbeitskreises Prozessanalytik CY - Gerlingen DA - 2014-11-25 PY - 2014 AN - OPUS4-33136 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ostermann, Markus T1 - Online-Prozessanalytik von Wertstoffen aus Klärschlammaschen T2 - Hannovermesse 2015 CY - Hannover DA - 2015-04-13 PY - 2015 AN - OPUS4-33139 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppe, Enrico T1 - Air-based multi-shop sensor network for the localization of persons T2 - EuroSensors 2014 CY - Brescia, Italy DA - 2014-09-07 PY - 2014 AN - OPUS4-32416 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rohwetter, Philipp T1 - Verbesserte faseroptisch-akustische Teilentladungssensoren für elastomere Isolierungen T2 - ETG-VDE-Fachtagung "Diagnostik elektrischer Betriebsmittel 2014" CY - Berlin, Germany DA - 2014-11-25 PY - 2014 AN - OPUS4-32417 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rohwetter, Philipp T1 - Fiber-optic acoustic emission sensors for high voltage environments T2 - 31st Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Kempten, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-32418 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rohwetter, Philipp T1 - Improved fibre-optic acoustic sensors for partial discharge in elastomeric insulations T2 - 23rd International Conference on Optical Fibre Sensors (OFS23) CY - Santander, Spain DA - 2014-06-02 PY - 2014 AN - OPUS4-32419 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holm, Olaf T1 - Gewinnung von Metallen aus Rückständen thermischer Prozesse - ATR T2 - 5. Urban Mining Kongress / r3-Statusseminar CY - Essen, Germany DA - 2014-06-11 PY - 2014 AN - OPUS4-32099 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank T1 - Limited load analysis of pressurized containers T2 - ASME IMECE2014-36334 CY - Montreal DA - 2014-11-16 PY - 2014 AN - OPUS4-32048 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie T1 - Condition of CFRP-strengthening of concrete bridges years after aplication T2 - 31st DANUBIA-ADRIA Symposium on Advances in Experimental Mechanics CY - Kempten, Allgäu, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-33076 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Thick coating of polyolefins with flame retardant properties T2 - 4. Brand- und Explosionsschutztage 2015 CY - Magdeburg, Deutschland DA - 2015-03-26 PY - 2015 AN - OPUS4-33071 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knabe, Nicole T1 - Roles of protective pigments in oxidative stress responses of the rock-inhabiting model fungus Knufia petricola A95 T2 - 28th Fungal Genetics Conference CY - Pacific Grove, California, USA DA - 2015-03-17 PY - 2015 AN - OPUS4-33058 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Wasserstoffsensoren zur Brandfrüherkennung T2 - 4. Brand- und Explosionsschutztage 2015 CY - Magdeburg, Deutschland DA - 2015-03-26 PY - 2015 AN - OPUS4-33102 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ecker, Melanie T1 - Multifunctional information carriers T2 - Polydays 2014: Beyond Self Assembly - Making Polymeric Materials More Versatile CY - Berlin, Germany DA - 2014-09-30 PY - 2014 AN - OPUS4-32080 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisenacher, Germar T1 - Transversely Isotropic Material Model for the Crush of Spruce Wood (tiM) T2 - Junior Euromat 2014 CY - Lausanne, Schweiz DA - 2014-07-21 PY - 2014 AN - OPUS4-32246 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - EFNDT Working Group 5 "NDT Technology for Public Security and Safety", two areas with the same aim T2 - 11th European Conference on NDT (ECNDT 2014) CY - Prague, Czech Republic DA - 2014-10-06 PY - 2014 AN - OPUS4-32233 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rolle, Annette T1 - Testing of sealed radioactive sources at BAM T2 - IRPA 2010, Third European International radiation Association Congress CY - Helsinki, Finnland DA - 2010-06-14 PY - 2010 AN - OPUS4-32252 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rolle, Annette T1 - Type testing of diveices with inserted radioactive sources T2 - IRPA 2006, Second European International radiation Protection Association Congress CY - Paris, Frankreich DA - 2006-05-15 PY - 2006 AN - OPUS4-32253 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schimanowitz, Annette T1 - Cationic dendrimers as histone mimics for gene delivery T2 - Polydays 2014: Beyound Self Assembly-Making Polymeric Material More Versatile CY - Berlin; TU DA - 2014-09-30 PY - 2014 AN - OPUS4-32202 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Taabache, Soraya T1 - Studies on the Self-Assembling Behavior of a New Series of Dendritic Amphiphiles containing Newkome-Type Dendrons T2 - 3. International Symposium of the Collaborative Research Center (SFB) 765 CY - Berlin FU DA - 2014-10-23 PY - 2014 AN - OPUS4-32203 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schimanowitz, Annette T1 - Cationic dendrimers as histone mimics for gene delivery T2 - 3. International Symposium of the Collaborative Research Center (SFB) 765 CY - Berlin; FU DA - 2014-10-23 PY - 2014 AN - OPUS4-32204 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas T1 - What are the Influencing Factors on Inspection Performance of UT Testing on the Wheel Set Hollow Axle in Context of Education and Brush Up Examination? T2 - 5th European-American Workshop on Reliability of NDE CY - Seminaris Campus Hotel in Berlin, Germany DA - 2014-10-07 PY - 2014 AN - OPUS4-32213 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas T1 - Investigation of Multiple Parameter Influences on the POD of Mechanized UT-Testing T2 - 5th European-American Workshop on Reliability of NDE CY - Seminaris Campus Hotel Berlin, Germany DA - 2014-10-07 PY - 2014 AN - OPUS4-32214 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Molecular Dynamics of linear poly(n-isopropylacrylamide) in water below and above the phase transition: A broadband dielectric relaxation spectroscopy study T2 - Polydays 2014 CY - Berlin, Germany DA - 2014-09-30 PY - 2014 AN - OPUS4-32279 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Janine T1 - Design of experiment for tributyltin quantification by isotope dilution SPE-GC-ICP-MS T2 - CANAS 2015 CY - Leipzig, Germany DA - 2015-03-08 PY - 2015 AN - OPUS4-32750 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Chemische Analytik in der Forensik: Der Alkoholkonsummarker Ethylglucuronid T2 - ANAKON 2015 CY - Graz (Österreich) DA - 2015-03-23 PY - 2015 AN - OPUS4-32828 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - Evaluierung der Fähigkeit zur Geruchsgeneralisierung und Differenzierung von Hunden im Modellversuch T2 - Symposium Odorologie CY - Hamburg DA - 2015-03-23 PY - 2015 AN - OPUS4-32831 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seuthe, T. T1 - Relaxation phenomena in fs-laser modified glass studied by µ-Raman-spectroscopy T2 - Glass & Optical Materials Division and Deutsche Glastechnische Gesellschaft Joint Annual Meeting (ACerS GOMD-DGG) CY - Miami, United States of America DA - 2015-05-17 PY - 2015 AN - OPUS4-32764 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Femtosecondd laser-induced periodic surface structures on titanium and titanium alloys for tribological applications T2 - European Materials Research Society (EMRS) Spring Meeting 2015, Symposium CC "Laser and plasma processing for advanced applications in material science" CY - Lille, France DA - 2015-05-11 PY - 2015 AN - OPUS4-32766 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Laser-induced periodic surface structures (LIPSS) upon femtosecond two-color double-pulse irradiation T2 - European Materials Research Society (EMRS) Spring Meeting 2015, Symposium CC "Laser and plasma processing for advanced applications in material science" CY - Lille, France DA - 2015-05-11 PY - 2015 AN - OPUS4-32767 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Derrien, Thibault T1 - Plasmonic origin of periodic 100-nm-structures on silicon upon femtosecond pulse laser irradiation in water T2 - European Materials Research Society (EMRS) Spring Meeting 2015, Symposium CC "Laser and plasma processing for advanced applications in material science" CY - Lille, France DA - 2015-05-11 PY - 2015 AN - OPUS4-32768 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schallschmidt, Kristin T1 - Lungenkrebszellkulturen - ein Modell für die Biomarkersuche mit Tiernasen? T2 - Symposium Odorologie CY - Hamburg DA - 2015-03-23 PY - 2015 AN - OPUS4-32781 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Griepentrog, Michael T1 - Connectivity of ISO 14577 and Pharr´s concept of the “EFFECTIVE INDENTER SHAPE” T2 - PSE 2012 CY - Garmisch-Patenkirchen, Germany DA - 2012-09-10 PY - 2012 AN - OPUS4-33212 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kotschate, Daniel T1 - Dreidimensionale Bestimmung der Richtcharakteristik in Tauchtechnik T2 - DGZfP DACH Jahrestagung 2015 CY - Salzburg, Österreich DA - 2015-05-11 PY - 2015 AN - OPUS4-33235 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kotschate, Daniel T1 - Bestimmung der Richtcharakteristik von Senkrecht- und Winkelprüköpfen in Kontakttechnik T2 - DGZfP Dach Jahrestagung 2015 CY - Salzburg, Österreich DA - 2015-05-11 PY - 2015 AN - OPUS4-33236 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bresch, Harald T1 - GIXRF as a method for the quantification of equally sized nanoparticle fractions T2 - Aerosol Technology 2014 CY - Karlsruhe, Germany DA - 2014-06-16 PY - 2014 AN - OPUS4-33278 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krome, Fabian T1 - Modenverfolgung in SBFEM-Simulationen von geführten Ultraschallwellen T2 - DACH-Jahrestagung 2015 CY - Salzburg, Österreich DA - 2015-05-11 PY - 2015 AN - OPUS4-33226 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Daschewski, Maxim T1 - Thermo-akustische Ultraschallemitter T2 - Sensor&Test 2015 Messe CY - Nürnberg, Deutschland DA - 2015-05-20 PY - 2015 AN - OPUS4-33231 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Daschewski, Maxim T1 - Thermo-akustische Ultraschallemitter T2 - Control 2015 CY - Stuttgart, Deutschland DA - 2015-05-05 PY - 2015 AN - OPUS4-33232 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Linear Gas Sensor for Methane Based on a Selectively Permeable Membrane T2 - AMA SENSOR Conference 2015 CY - Nuremberg, Germany DA - 2015-05-19 PY - 2015 AN - OPUS4-33223 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mirtschin, Nikolaus T1 - Controlling Temperature-Memory Behavior in a Semicrystalline Poly(esterurethane) Elastomer T2 - Polydays 2014: Beyond Self-Assembly - Making Polymeric Materials More Versatile CY - Berlin, Germany DA - 2014-09-30 PY - 2014 AN - OPUS4-32079 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gravenkamp, Hauke T1 - Novel approaches for the simulation of ultrasonic guided waves T2 - ECNDT 2014 CY - Prag (Tschechien) DA - 2014-10-06 PY - 2014 AN - OPUS4-31979 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oberleitner, Lidia T1 - Fluorescence polarization immunoassay - the fast alternative to ELISA T2 - Schnell, schneller, Optik - wie optische Technologien die Lebensmittel- und Umweltanalytik optimieren CY - Berlin DA - 2014-11-27 PY - 2014 AN - OPUS4-32143 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kolkoori, Sanjeevareddy T1 - Dual Energy Hochenergieradiographie für die Materialdiskriminierung in Cargo-Containern: Von der Forschung zur Anwendung T2 - DGZfP-Jahrestagung CY - Potsdam DA - 2014-05-26 PY - 2014 AN - OPUS4-32146 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kolkoori, Sanjeevareddy T1 - Anwendung von Röntgenrückstreutechnik zur Untersuchung von Bauteilen für die Luftfahrtindustrie T2 - DGZfP-Jahrestagung CY - Potsdam DA - 2014-05-26 PY - 2014 AN - OPUS4-32148 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Improvement of the limit of detection for chlorine by double-pulse and spark reheating T2 - LIBS 2014 CY - Beijing, China DA - 2014-09-09 PY - 2014 AN - OPUS4-32132 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holm, Olaf T1 - Aufschluss, Trennung und Recycling von ressourcenrelevanten Metallen aus Rückständen thermischer Prozesse mit innovativen Verfahren (ATR) T2 - 5. Urban Mining Kongress / r3-Statusseminar CY - Essen, Germany DA - 2014-06-11 PY - 2014 AN - OPUS4-32100 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Nele T1 - Selective Modifiction of Silicon Nitride using Click-Chemistry T2 - Potsdam Days on Bioanalysis 2014 CY - Potsdam, Germany DA - 2014-11-06 PY - 2014 AN - OPUS4-32120 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fettig, Ina T1 - Optimizing a solid phase extraction method for tributyltin using a design of experiment and qualification with ID-GC-ICP-MS T2 - SETAC CY - Basel, Schweiz DA - 2014-05-11 PY - 2014 AN - OPUS4-31842 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas T1 - Wheel Set Axle Inspection Using Advanced Phase Array Approach T2 - ECNDT 2014 CY - Prag (Tschechien) DA - 2014-10-06 PY - 2014 AN - OPUS4-31980 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gravenkamp, Hauke T1 - Time-causal material modeling in the simulation of guided waves in circular viscoelastic waveguides T2 - 2014 IEEE International Ultrasonics Symposium CY - Chicago (USA) DA - 2014-09-03 PY - 2014 AN - OPUS4-31989 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ammann, Dominic T1 - Alcohol consumption marker in hair: Impact and detection of cowsmetic bleaching T2 - 9. Interdisziplinäres Doktorandenseminar CY - Berlin DA - 2015-02-22 PY - 2015 AN - OPUS4-32570 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Tribological performance of femtosecond laser-induced periodic surface structures on titanium T2 - 16th International Symposium on Laser Precision Microfabrication LPM 2015 CY - Kitakyushu, Fukuka, Japan DA - 2015-05-26 PY - 2015 AN - OPUS4-32598 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schallschmidt, Kristin T1 - Charakterisierung flüchtiger Nitrosothiole T2 - 9. Interdisziplinäres Doktorandenseminar CY - Berlin DA - 2015-02-22 PY - 2015 AN - OPUS4-32629 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schallschmidt, Kristin T1 - Erste Ergebnisse zur Untersuchung von Atemluftproblemen im Rahmen von BIOAIR T2 - 9. Interdisziplinäres Doktorandenseminar CY - Berlin DA - 2015-02-22 PY - 2015 AN - OPUS4-32630 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rohwetter, Philipp T1 - Fibre-optic sensors for partial discharge-generated ultrasound in elastomeric high-voltage insulation materials T2 - 5th European Workshop on Optical Fibre Sensors - 5th EWOFS' 2013 CY - Cracow, Poland DA - 2013-05-19 PY - 2013 AN - OPUS4-32611 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Habel, Wolfgang T1 - Research on Distributed Fiber Sensing Based Monitoring in Geo-Engineering T2 - 31th Danubia-Adria Symposium CY - Kempten, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-32614 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Habel, Wolfgang T1 - The Role of Standardization in Establishing Young Measurement Technologies by the Example of Fibre-Optic Sensor Technology for Deformation Assessment of Structures T2 - 31th Danubia-Adria Symposium CY - Kempten, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-32615 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Analytische Betrachtung von neu identifizierten Arsenolipiden in Hering T2 - LC-MS in der Umweltanalytik 2014 CY - Leipzig DA - 2014-06-16 PY - 2014 AN - OPUS4-31855 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Synthesis of arsenolipids and their characterization by LC-MS and NMR techniques T2 - LC-MS in der Umweltanalytik 2014 CY - Leipzig DA - 2014-06-16 PY - 2014 AN - OPUS4-31856 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Philipp, Rosemarie T1 - Development of an analytical method for TBT speciation in coastal lyes and sea water (Pomorie Lake, Black Sea, Bulgaria) T2 - 38th International Symposium on Environmental Analytical Chemistry CY - Lausanne, Schweiz DA - 2014-06-17 PY - 2014 AN - OPUS4-31857 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maiwald, Michael T1 - Multi-spectroscopic approach for the analysis of dissolution profiles of pharmaceuticals T2 - EuroPACT 2014, 3rd European Conference on Process Analytics and Control Technology CY - Barcelona, Spanien DA - 2014-05-06 PY - 2014 AN - OPUS4-31889 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scheidemann, Robert T1 - Model-size and full-size penetration tests on damping concrete T2 - Junior Euromat 2014 CY - Lausanne, Switzerland DA - 2014-07-21 PY - 2014 AN - OPUS4-31791 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gerecke, M. T1 - Dynamic Fluorescent Stokes Shift near Phospholipid Bilayers for Complete Environmental Response T2 - XXVth IUPAC Symposium on Photochemistry CY - Bordeaux, Frankreich DA - 2014-07-13 PY - 2014 AN - OPUS4-31795 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Taabache, Soraya T1 - Development of a New Series of Dendritic Amphiphiles and their Self-Assembling Behavior T2 - Polydays 2014: Beyond Self Assembly - Making Polymeric Materials More Versatile CY - Berlin, Technische Universität DA - 2014-09-30 PY - 2014 AN - OPUS4-31691 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Madkour, Sherif Aly Hassan Aly T1 - Specific heat spectroscopy characterization of dynamic glass transition in ultrathin poly-2-vinyl pyridine films T2 - Polydays 2014 CY - Berlin, Germany DA - 2014-09-30 PY - 2014 AN - OPUS4-31692 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Madkour, Sherif Aly Hassan Aly T1 - Calorimetric glass transition of ultrathin poly-2-vinyl pyridine films T2 - 8th International Conference of Broadband Dielectric Spectroscopy CY - Wisla, Poland DA - 2014-09-14 PY - 2014 AN - OPUS4-31693 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holzlechner, Gerald T1 - Metrology for monitoring infectious diseases: flow cytometer, XPS and TOF-SIMS characterization of DNA adhesion losses on micro fluidic PCR devices T2 - Angewandte Oberflächen Analytik Tagung, AOFA 18 CY - Kaiserslautern, Germany DA - 2014-09-29 PY - 2014 AN - OPUS4-31684 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Albéric, M. T1 - How Nature makes Art: Origin of the macroscopic Schreger pattern of elephant ivory induced by its 3D microstructure T2 - Gordon Research Conference "Scientific Methods in Cultural Heritage Research" CY - Sunday River Resort, Newry, ME, USA DA - 2014-07-27 PY - 2014 AN - OPUS4-31898 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schade, U. T1 - Far-Infrared Absorption Measurements on Thin Polymer Films T2 - 39th Int. Conf. on Infrared, Millimeter, and THz Waves CY - The University of Arizona, Tucson, AZ, USA DA - 2014-09-14 PY - 2014 AN - OPUS4-31903 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Duffner, Eric T1 - DEVELOPMENT AND VALIDATION OF A RACE TRACK PROBE (RTP) T2 - 2nd WORKSHOP on STATISTICAL SAFETY ASSESSMENT of Composite Cylinders from Mass Production CY - BAM, Berlin DA - 2015-01-13 PY - 2015 AN - OPUS4-32447 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knabe, Nicole T1 - Oxidative stress response of refractive ascomycetes: genetic manipulation of the rock-inhabiting model fungus Knufia petricola A95 T2 - Microbiology and Infection 2014; Jahrestagung; 4. gemeinsame Kongress DGHM/VAAM CY - Dresden, Germany DA - 2014-10-05 PY - 2014 AN - OPUS4-32166 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - DMTA study of hydrated soda-lime-silicate glasses T2 - Thermal Analysis and Calorimetry in Industry and Research - 40 Years of GEFTA CY - Berlin, Germany DA - 2014-09-16 PY - 2014 AN - OPUS4-32343 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Christian T1 - Calibration of a Pushrod Dilatometer T2 - Thermal Analysis and Calorimetry in Industry and Research - 40 Years of GEFTA CY - Berlin, Germany DA - 2014-09-16 PY - 2014 AN - OPUS4-32344 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Spektroskopische Untersuchungen an Bioprozess-Simulationsproben T2 - 10. Kolloqium Prozessanalytik CY - Gerlingen DA - 2014-11-25 PY - 2014 AN - OPUS4-32284 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Chemometric modeling of on-line Raman spectra from mini-plant operation T2 - 10. Kolloqium Prozessanalytik CY - Gerlingen DA - 2014-11-25 PY - 2014 AN - OPUS4-32285 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Konnertz, Nora T1 - Gastransport Properties and Molecular Mobility of Matrimid/PhenethyIPOSS Nanocomposites T2 - 79. Jahrestagung der DPG und DPG-Frühjahrstagung CY - Berlin DA - 2015-03-15 PY - 2015 AN - OPUS4-32888 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Omara, Shereen T1 - The effect of preparation method on the physical properties of the nanocomposites based on hyperbranched polymers T2 - 79. Jahrestagung der DPG und DPG Frühjahrstagung CY - Berlin, Germany DA - 2015-03-15 PY - 2015 AN - OPUS4-32891 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schallschmidt, Kristin T1 - Volatile biomarkers in the headspace of cultured cells: Comparability of fiber items for headspace solid phase micro extraction (HS-SPME) T2 - 8th Senftenberg Innovation Forum on Multiparametric Analysis: Autoimmune Diagnostics CY - Senftenberg, Germany DA - 2014-05-07 PY - 2014 AN - OPUS4-30649 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Trela, Christiane T1 - Vergleich von Radarmessungen in Reflexion und Transmission zur Detektierbarkeit von Lufteinschlüssen in Betonbauteilen T2 - Bauwerksdiagnose 2014 CY - Berlin, Germany DA - 2014-02-13 PY - 2014 AN - OPUS4-30654 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bandow, Nicole T1 - Bio assays as integrated tool for the assessment of construction products T2 - SETAC Europe CY - Basel, Switzerland DA - 2014-05-12 PY - 2014 AN - OPUS4-30736 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Füllbrandt, Marieke T1 - Interactions between Water and Linear Poly(N-isopropylacrylamide) Chains Around the Phase Transition Investigated by Dielectric Relaxation Spectroscopy T2 - DPG-Frühjahrstagung CY - Dresden, Germany DA - 2014-03-30 PY - 2014 AN - OPUS4-30658 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heisterkamp, T1 - Ecotoxicological assessment of the environmental compatibility of construction products for outdoor applications T2 - SETAC 2014 CY - Basel, Switzerland DA - 2014-05-12 PY - 2014 AN - OPUS4-30715 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knorr, Annett T1 - 2-Phasenreaktion in mikrostrukturierten Reaktoren T2 - Dechema Jahrestreffen Reaktionstechnik CY - Würzburg, Germany DA - 2014-04-28 PY - 2014 AN - OPUS4-30696 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias T1 - A comparison to assess the preparative and analytical capabilities of laboratories for the measurement of semi-volatile organic compounds in indoor air T2 - MACPoll-Final conference CY - Delft, Netherlands DA - 2014-05-13 PY - 2014 AN - OPUS4-30703 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schallschmidt, Kristin T1 - Lung cancer cells are not suitable for breath biomarker search T2 - International Concerence "Breath Analysis 2014" CY - Torun, Poland DA - 2014-07-06 PY - 2014 AN - OPUS4-30937 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Tribological performance of femtosecond laser-induced periodic surface structures on metals T2 - European Materials Research Society (EMRS) Spring Meeting 2014, Symposium J "Laser interaction with advanced materials:fundamentals and applications" CY - Lille, France DA - 2014-05-26 PY - 2014 AN - OPUS4-30918 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Robertson, Daniela T1 - High Pressure Autoclave Test (HPAT) for measuring oxidative resistance of polyolefinic products T2 - Polymertec2014 CY - Merseburg, Germany DA - 2014-06-25 PY - 2014 AN - OPUS4-30989 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steffen, Milan T1 - Simultaneous Vibration and Quasi-distributed Strain Measurement usind Incoherent OFDR and Extrinsic Fabry-Perot Interferometers T2 - 23rd International Conference on Optical Fiber Sensors OFS23 CY - Santander, Spain DA - 2014-06-02 PY - 2014 AN - OPUS4-30930 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Two Application Examples of RFID Sensor Systems - Identification and Diagnosis of Concrete Components and Monitoring of Dangerous Goods Transports T2 - 13th IMEKO TC10 Workshop on Technical Diagnostics CY - Warsaw, Poland DA - 2014-06-26 PY - 2014 AN - OPUS4-30931 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meinel, Dietmar T1 - Analyzing Microstructure and Damage in Construction materials with 3D Micro CT T2 - International Congress on 3D Materials Science CY - Annecy, France DA - 2014-06-29 PY - 2014 AN - OPUS4-31004 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Poltavtseva, Marina T1 - Electrochemical investigations of carbon-based conductive coatings for cathodic protection of steel reinforcement T2 - Junior EUROMAT 2014 CY - Lausanne, Switzerland DA - 2014-07-21 PY - 2014 AN - OPUS4-31296 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liebner, Christian A1 - Balcazar Pust, Emilio T1 - Untersuchungen zur Explosionsausbreitung im Mikroreaktor T2 - Jahrestreffen der ProcessNet-Fachgruppe Mikroverfahrenstechnik CY - Frankfurt am Main, Germany DA - 2013-10-28 PY - 2013 AN - OPUS4-31287 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erning, Johann Wilhelm T1 - Investigations of the Corrosion behaviour of stainless steel in contact with ECA-generated disinfectant fluids T2 - Eurocorr 2014 CY - Pisa, Italy DA - 2014-09-08 PY - 2014 AN - OPUS4-31360 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Janine T1 - Determination of the critical pollutant tributyltin in whole water samples T2 - Tracespec CY - Aberdeen, Scotland DA - 2014-08-31 PY - 2014 AN - OPUS4-31363 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Janine T1 - Analytik von Tributylzinn in verschiedenen Wassermatrices mittels GC-ICP-MS T2 - 24. ICP-MS Anwendertreffen 2014 CY - Geesthacht, Germany DA - 2014-09-15 PY - 2014 AN - OPUS4-31365 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Feller, Viktor T1 - Anwendung von gesteuerten Sendesignalen bei Ultraschallmessungen an Beton T2 - Jahrestagung der Deutschen Gesellschaft für Zerstörungsfreie Prüfung e.V. (DGZfP) CY - Potsdam, Germany DA - 2014-05-26 PY - 2014 AN - OPUS4-31510 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Feller, Viktor T1 - Evaluation of a Sound Field Modelling based on Point Source Synthesis Technique for the Design of Ultrasonic Probe Array T2 - 31st DANUBIA-ADRIA Symposium on Advances in Experimental Mechanics CY - Kempten, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-31511 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baier, Jennifa T1 - Validation of the Plasma Compatibility of Monodisperse and Functionalized Particles T2 - International Conference on Plasma Surface Engineering (PSE) CY - Garmisch-Partenkirchen, Germany DA - 2014-09-15 PY - 2014 AN - OPUS4-31496 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosu, Dana Maria T1 - Thin layers deposited with plasma sputtering and e-beam evaporation as reference samples for thickness determination by spectroscopic ellipsometry T2 - 14th International Conference on Plasma Surface Engineering (PSE) CY - Garmisch-Partenkirchen, Germany DA - 2014-09-15 PY - 2014 AN - OPUS4-31497 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Plasma Cleaning, Activation and Modification of Surfaces for Improved Adhesive and Bonding Strength T2 - International Conference on Plasma Surface Engineering (PSE) CY - Garmisch-Partenkirchen, Germany DA - 2014-09-15 PY - 2014 AN - OPUS4-31498 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baier, Jennifa T1 - Oberflächenaktivierung von Polymeren mittels Mikrowellen- und Atmosphären-Plasmen T2 - Thementage Grenz- und Oberflächentechnik CY - Leipzig, Germany DA - 2014-09-02 PY - 2014 AN - OPUS4-31499 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppe, Enrico T1 - Absolut messendes EFPI-Messsystem T2 - 17. ITG-/GMA-Fachtagung Sensoren und Messsysteme 2014 CY - Vienna, Austria DA - 2014-06-03 PY - 2014 AN - OPUS4-31533 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppe, Enrico T1 - Self-calibration-method for an inertial navigation system with three 3D sensors T2 - ISISS '14, IEEE International Symposium on INERTIAL SENSORS and SYSTEMS CY - Laguna Beach, CA, USA DA - 2014-02-25 PY - 2014 AN - OPUS4-31534 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppe, Enrico T1 - Enhancement of the automatic 3D calibration for a multi-sensor-system T2 - IPIN 2013, 4th International Conference on Indoor Positioning and Indoor Navigation CY - Montbéliard, France DA - 2013-10-28 PY - 2013 AN - OPUS4-31535 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppe, Enrico T1 - Absolute measuring EFPI-measurement systems T2 - 31st Danubia Adria Symposium on Advances in Experimental Mechanics CY - Kempten, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-31537 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kohlhoff, Harald T1 - Determining the spatial form of rock samples in triaxial cells - a fiber-optic measurement concept T2 - 31st Danubia Adria Symposium on Advances in Experimental Mechanics CY - Kempten, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-31538 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klunker, André T1 - Different numerical methods around the SHPB experiment T2 - 31st Danubia Adria Symposium on Advances in Experimental Mechanics CY - Kempten, Germany DA - 2014-09-24 PY - 2014 N1 - Geburtsname von Köppe, Tabea: Wilk, T. - Birth name of Köppe, Tabea: Wilk, T. AN - OPUS4-31539 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wu, Cheng-Chieh T1 - Integrated structural analysis of hybrid measurement and finite element method for damage detection within a slender beam T2 - 31st Danubia Adria Symposium on Advances in Experimental Mechanics CY - Kempten, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-31540 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brandes, K. T1 - Lagrange Multiplier test for structural damage of bridges T2 - 31st Danubia Adria Symposium on Advances in Experimental Mechanics CY - Kempten, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-31541 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Daum, Werner T1 - Pulse shaping and alignment tests with the Split-Hopkinson Pressure Bar for validation T2 - 31st Danubia Adria Symposium on Advances in Experimental Mechanics CY - Kempten, Germany DA - 2014-09-24 PY - 2014 N1 - Geburtsname von Köppe, Tabea: Wilk, T. - Birth name of Köppe, Tabea: Wilk, T. AN - OPUS4-31542 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Hopkinson Bar method for temperature dependent testing and calibration of accelerometers T2 - 31st Danubia Adria Symposium on Advances in Experimental Mechanics CY - Kempten, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-31543 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raedel, Martina T1 - One solution with three components - filled adhesives for stained glass window conservation T2 - ICOM-CC Glass and Ceramics Working Group Interim Meeting CY - Amsterdam, Netherlands DA - 2013-10-07 PY - 2013 AN - OPUS4-29891 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank T1 - Integrity of tanks under extreme loading conditions T2 - International Conference on Engineering and Applied Science CY - Hong Kong, China DA - 2013-12-19 PY - 2013 AN - OPUS4-29837 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Geophysical Methods for Non-Destructive Testing in Civil Engineering T2 - AGU Fall Meeting CY - San Francisco, CA, USA DA - 2013-12-09 PY - 2013 AN - OPUS4-29843 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Manuel T1 - Verfolgung mechanochemischer Synthesen durch in situ Röntgendiffraktometrie T2 - Zeit- und temperaturaufgelöste Röntgen-Pulver-Diffraktometrie CY - Pfinztal, Germany DA - 2013-11-14 PY - 2013 AN - OPUS4-29853 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stroh, Julia T1 - Investigations of Degradation of Cementitious Materials by in-situ Structure Analysis T2 - 1 st International Conference on the Chemistry of Construction Materials/TU Berlin CY - Berlin, Germany DA - 2013-10-07 PY - 2013 AN - OPUS4-29856 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ehlert, Christopher T1 - Theoretical NEXAFS investigation of structural defects in graphene: A density functional theory study T2 - 2013 Nutzertreffen am Helmholtz-Zentrum Berlin (HZB) CY - Berlin, Germany DA - 2013-12-05 PY - 2013 AN - OPUS4-29863 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, André T1 - Experimental Testing of Impact Limiters for RAM Packages under Drop Test Conditions T2 - PATRAM 2013 - 17th International Symposium on the Packaging and Transportation of Radioactive Materials CY - San Francisco, CA, USA DA - 2013-08-18 PY - 2013 AN - OPUS4-29770 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zientek, Nicolai T1 - Characterisation of Medium Resolution NMR Spectrometers bx Intrumental Functions via Reference Deconvolution T2 - 9. Kolloquium Prozessanalytik CY - Ludwigshafen am Rhein, Germany DA - 2013-11-28 PY - 2013 AN - OPUS4-29759 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zientek, Nicolai T1 - Characterisation of Medium Resolution NMR Spectrometers bx Intrumental Functions via Reference Deconvolution T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 2013-11-12 PY - 2013 AN - OPUS4-29760 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heideklang, René T1 - Data Fusion for Enhanced Flaw Detection T2 - 40th Annual Review of Progress in Quanitative Nondestructive Evaluation (QNDE) CY - Baltimore, MD, USA DA - 2013-07-21 PY - 2013 AN - OPUS4-29781 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holzweber, Markus T1 - Investigation of the Liquid Surface Structure of Ionic Liquids by ERXPS and NEXAFS T2 - 5th Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 2013-12-04 PY - 2013 AN - OPUS4-29959 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bader, Mark Andreas T1 - H2Sense - Cost effective and reliable hydrogen sensors for facilitating the safe use of hydrogen T2 - FCH JU Programme Review Days 2013 CY - Brussels, Belgium DA - 2013-11-11 PY - 2013 AN - OPUS4-29962 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Batzdorf, Lisa T1 - Crystal Structures and Dissolution Behavior of Carbamazepine Cocrystals T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 2013-11-12 PY - 2013 N1 - Geburtsname von Batzdorf, Lisa: Tröbs, L. - Birth name of Batzdorf, Lisa: Tröbs, L. AN - OPUS4-29896 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - EFNDT Working Group 5: der Brückenschlag zwischen technischer und öffentlicher Sicherheit T2 - DGZfP-Jahrestagung 2013, ZfP in Forschung, Entwicklung und Anwendung CY - Dresden, Germany DA - 2013-05-06 PY - 2013 AN - OPUS4-29953 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Analysis of historic carbolineum treatments with respect to decontamination T2 - Heritage Science And Sustainable Development For The Preservation Of Art And Cultural Assets - On The Way To The Green Museum CY - Berlin, Germany DA - 2013-04-11 PY - 2013 AN - OPUS4-29954 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schukar, Vivien T1 - Delamination-diagnosis-method for adhesively surface-applied FBG strain sensors T2 - 23rd International Conference on Optical Fibre Sensors CY - Santander, Spain DA - 2014-06-02 PY - 2014 AN - OPUS4-30768 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schukar, Vivien T1 - Temperatur-Selbstkompensation von integrierten FBG-Dehnungssensoren zur Zustandsüberwachung von Hochleistungsverbundwerkstoffen T2 - DGZfP-Jahrestagung 2014 CY - Potsdam, Germany DA - 2013-05-26 PY - 2013 AN - OPUS4-30769 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steffen, Milan T1 - Evaluating distributed fibre optic sensors integrated into thermoplastic composites for structural health monitoring T2 - 23rd International Conference on Optical Fibre Sensors CY - Santander, Spain DA - 2014-06-02 PY - 2014 AN - OPUS4-30770 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Degradation of Ethyl glucuronide by hydrogen peroxide and a non-destructive assay for oxidative hair treatment using infra-red spectroscopy T2 - 19th Meeting of the Society of Hair Testing CY - Bordeaux, France DA - 2014-06-11 PY - 2014 AN - OPUS4-30747 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Trela, Christiane T1 - Systematische Radaruntersuchungen zum Auffinden von Strukturschwächen in Betonbauteilen T2 - DGZfP-Jahrestagung CY - Potsdam, Germany DA - 2014-05-26 PY - 2014 N1 - Geburtsname von Klee, Martin: Günther, M. - Birth name of Klee, Martin: Günther, M. AN - OPUS4-30804 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fischer, Franziska T1 - Synthesis and structural Characterization of a Theophylline:Nicotinamide Cocrystal T2 - Berliner Chemie Symposium CY - Berlin, Germany DA - 2014-04-09 PY - 2014 N1 - Geburtsname von Batzdorf, Lisa: Tröbs, L. - Birth name of Batzdorf, Lisa: Tröbs, L. AN - OPUS4-30759 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Certification of Pd and Pt single spikes and application to the quantification of Pd and Pt in automotive exhaust emissions T2 - European Geosciences Union General Assembly 2014 CY - Vienna, Austria DA - 2014-04-27 PY - 2014 AN - OPUS4-30764 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Geilert, Sonja T1 - Silicon isotope fractionation during silica precipitation from hot-spring waters T2 - European Geosciences Union General Assembly 2014 CY - Vienna, Austria DA - 2014-04-28 PY - 2014 AN - OPUS4-30765 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gravenkamp, Hauke T1 - Innovative numerische Methoden zur Simulation geführter Ultraschallwellen T2 - DGZfP-Jahrestagung 2014 CY - Potsdam, Germany DA - 2014-05-26 PY - 2014 AN - OPUS4-30791 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Die EFNDT Arbeitsgruppe 5 "Öffentliche Sicherheit mit ZfP-Techniken" arbeitet weiter T2 - DGZfP Jahrestagung 2014 CY - Potsdam, Germany DA - 2014-05-26 PY - 2014 AN - OPUS4-31151 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maierhofer, Christiane T1 - Development of standards for flash thermography and lock-in thermography T2 - 12th International Conference on Quantitative Infrared Thermography CY - Bordeaux, France DA - 2014-07-07 PY - 2014 AN - OPUS4-31101 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Miccoli, Lorenzo T1 - H-House/Healthier life with eco-innovative components for housing constructions T2 - ECTP Construction and Built Environment: Future Horizons CY - Brussels, Belgium DA - 2014-06-17 PY - 2014 AN - OPUS4-31103 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Miccoli, Lorenzo T1 - Bond strength of anchor pins for earth block masonry T2 - 9th International Mansonry Conference CY - Guimarães, Portugal DA - 2014-07-07 PY - 2014 AN - OPUS4-31105 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Trela, Christiane T1 - Detection of Weak Scatterers in Reinforced Concrete Structures T2 - Ground Penetrating Radar (GPR) Conference 2014 CY - Brussels, Belgium DA - 2014-06-30 PY - 2014 N1 - Geburtsname von Klee, Martin: Günther, M. - Birth name of Klee, Martin: Günther, M. AN - OPUS4-31089 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bajer, Kamila T1 - Influence of Temperature, Irradiation, Exposure Media and Pressure on the Accelerated Oxidation of Polypropylene in an Autoclave T2 - MODEST 2014 CY - Portorož, Slovenia DA - 2014-08-31 PY - 2014 AN - OPUS4-31022 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hemmann, Felix T1 - Probing Slow Chemical Exchange of Pyridine Molecules at Acid Surfaces by 15N NMR T2 - 56th Rocky Mountain Conference on Magnetic Resonance CY - Copper Mountain, CO, USA DA - 2014-07-13 PY - 2014 AN - OPUS4-31392 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hemmann, Felix T1 - Reliable Quantification of Acid Sites on Solid Surfaces T2 - 47. Jahrestreffen Deutscher Katalytiker CY - Weimar, Germany DA - 2014-03-12 PY - 2014 AN - OPUS4-31393 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hemmann, Felix T1 - Quantification of Acid Sites on Aluminium Hydroxide Fluoride Surfaces by 15N -NMR Spectroscopy T2 - Adlershofer Posterschau CY - Berlin, Germany DA - 2013-11-12 PY - 2013 AN - OPUS4-31394 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bajer, Kamila T1 - The Memory Effect in Polyolefinic Products: A Tool for Confirming the Steam-Sterilization Process? T2 - GEFTA CY - Berlin, Germany DA - 2014-09-16 PY - 2014 AN - OPUS4-31419 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Choi, Changrok T1 - Surface characterization of amine modified plasma PEG polymer by plasma blending technique T2 - 9th European Workshop on Secondary Ion Mass Spectrometry - SIMS Europe 2014 CY - Münster, Germany DA - 2014-09-07 PY - 2014 AN - OPUS4-31456 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hemmann, Felix T1 - Quantification of Acid Sites on Aluminium Hydroxide Fluoride Surfaces by 15N-NMR T2 - Alpine Conference on Solid-State NMR CY - Chamonix, France DA - 2013-09-08 PY - 2013 AN - OPUS4-31401 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gottlieb, Cassian T1 - Mobile System for On-site Analysis of Building Materials T2 - 8th International Conference on Laser Induced Breakdown Spectroscopy, LIBS 2014 CY - Beijing, China DA - 2014-09-08 PY - 2014 AN - OPUS4-31404 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Tobias T1 - Improvement of the Limit of Detection for Chlorine by Double-Pulse and Spark Reheating T2 - 8th International Conference on Laser Induced Breakdown Spectroscopy, LIBS 2014 CY - Beijing, China DA - 2014-09-08 PY - 2014 AN - OPUS4-31405 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Molecular Dynamics of Linear Poly(N-isopropylacrylamide) in Water below and above the Phase Transition: A Broadband Dielectric Relaxation Spectroscopy Study T2 - 8th International Conference on Broadband Dielectric Spectroscopy and its Applications CY - Wisla, Poland DA - 2014-09-15 PY - 2014 AN - OPUS4-31465 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pieringer, A. T1 - Sleeper with under sleeper pads offer vibration solution T2 - Transport Research Arena CY - Paris, France DA - 2014-04-14 PY - 2014 AN - OPUS4-31411 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lücke, F.-K. T1 - Einfluss der Gefrierlagerung und des Auftauens auf die aerobe Koloniezahl und die Escherichia coli-Zahl in Hackfleisch T2 - 54. Arbeitstagung des Arbeitsgebietes Lebensmittelhygiene CY - Garmisch-Partenkirchen, Germany DA - 2013-09-24 PY - 2013 AN - OPUS4-30206 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merchel, Silke T1 - Accuracy of 9Be-data and its influence on 10Be cosmogenic nuclide data T2 - Seminar on Activation Analysis and gamma spectroscopy SAAGAS 24 CY - Garching, Germany DA - 2013-02-26 PY - 2013 AN - OPUS4-30208 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Structural phenomena in multicomponent silicate glasses after femtosecond laser pulse irradiation T2 - European Materials Research Society (EMRS) Spring Meeting 2014, Symposium J "Laser interaction with advanced materials: fundamentals and applications" CY - Lille, France DA - 2014-05-26 PY - 2014 AN - OPUS4-30915 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Plasmonic origin of near-wavelength laser-induced periodic surface structures on silicon: double-pulse experiments and theory T2 - European Materials Research Society (EMRS) Spring Meeting 2014, Symposium J "Laser interaction with advanced materials:fundamentals and applications" CY - Lille, France DA - 2014-05-26 PY - 2014 AN - OPUS4-30916 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kraus, Werner T1 - Formation and structure of polynuclear tetravalent actinide and lanthanide carboxylates in aqueous solution and solid state T2 - Actinide XAS 2014 CY - Zurich, Switzerland DA - 2014-05-20 PY - 2014 AN - OPUS4-30876 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liehr, Sascha T1 - Performance of digital incoherent OFDR and prospects for optical fiber sensing applications T2 - 23rd International Conference on Optical Fiber Sensors OFS23 CY - Santander, Spain DA - 2014-06-02 PY - 2014 AN - OPUS4-30895 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina T1 - Evaluation of RT Systems with an Observer-POD T2 - 5th European-American Workshop on Reliability of NDE CY - Berlin, Germany DA - 2013-10-07 PY - 2013 AN - OPUS4-31217 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berchtold, Florian T1 - Set of Filter Criteria for Compartment Screening in Fire Probabilistic Safety Analysis in Nuclear Power Plants T2 - Magdeburger Brand- und Explositionsschutztag CY - Magdeburg, Germany DA - 2013-03-21 PY - 2013 AN - OPUS4-31231 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Christina T1 - The vibrational density of states of discotic liquid crystals in the bulk and in the nanoconfined state T2 - DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM) CY - Dresden, Germany DA - 2014-03-30 PY - 2014 AN - OPUS4-30534 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Christina T1 - Structure and Phase Transitions in a Series of Triphenylene-Based Discotic Liquid Crystals in the Nanoconfined State T2 - DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM) CY - Dresden, Germany DA - 2014-03-30 PY - 2014 AN - OPUS4-30535 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oberleitner, Lidia T1 - New monoclonal anti-carbamazepine antibody for application in fluorescence polarization immunoassays T2 - Analytica Conference 2014 CY - Munich, Germany DA - 2014-04-01 PY - 2014 AN - OPUS4-30516 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfennig, Anja T1 - Predicting corrosion fatigue of steels in geothermal environment from new laboratory insitu measurement technique T2 - EnMat 2013, 2nd International Conference on Materials for Energy CY - Karlsruhe, Germany DA - 2013-05-12 PY - 2013 AN - OPUS4-30521 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naghib Zadeh, Hamid T1 - Herstelung von Hochleistungstransformatoren durch Co-Sinterung magnetischer und dielektrischer LTCC-Folien T2 - Jahrestagung der Deutschen Keramischen Gesellschaft 2014 CY - Clausthal-Zellerfeld, Germany DA - 2014-03-24 PY - 2014 AN - OPUS4-30474 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank T1 - ACEAIT-2673 Heat Treatment of Aluminium Receptacle T2 - ACEAIT Annual Conference on Engineering and Information Technology CY - Tokyo, Japan DA - 2014-03-28 PY - 2014 AN - OPUS4-30511 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wu, Cheng-Chieh T1 - Integration der Finite-Elemente-Methode in die Ausgleichsrechnung zur Parameteridentifikation T2 - 17. Internationaler Ingenieursvermessungskurs 2013 CY - Zurich, Switzerland DA - 2014-01-14 PY - 2014 AN - OPUS4-29967 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lothongkam, Chaiyaporn T1 - Development of a new methodology to measure dielectric strength of elastomeric materials T2 - The 18th International Symposium on High Voltage Engineering CY - Seoul, South Korea DA - 2013-08-25 PY - 2013 AN - OPUS4-29975 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Cost-effective and reliable hydrogen sensors for facilitating the safe use of hydrogen T2 - ICHS 2013- International Conference on Hydrogen Safety, Progress in safety of hydrogen technologies and infrastructure: enabling the transition to zero carbon energy CY - Brussels, Belgium DA - 2013-09-09 PY - 2013 AN - OPUS4-30087 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nöller, Renate T1 - Röntgenanalytische Bestimmung zur Herkunft von Pigmenten T2 - Jahrestagung Archäometrie und Denkmalpflege CY - Tübingen, Deutschland DA - 2012-03-28 PY - 2012 AN - OPUS4-31711 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Isleyen, A. T1 - A Joint Research Project for the Sustainable Production of Certified Matrix Reference Materials for Environmental Analysis N2 - Reliable analysis of chemical indicators in water, sediment and soil samples for the purpose of environmental pollution assessment poses one of the greatest analytical challenges, having in mind the complexity of sample matrix and low concentrations of pollutants. Organics (pesticides, PAHs, PCBs, etc.) and heavy metals (Hg, Cd, Ni, Pb and As) represent target parameters. Laboratories performing sampling and tests in this field regulated by respective EU directives, need strong support in terms of providing them with appropriate matrix CRMs enabling the process of quality control. NMIs and DIs with proven metrological capabilities for the production and certification of such materials are necessary for the provision of quality data. This project is aiming to develop capacity to produce CRMs for environmental analysis by transferring the theoretical and practical know-how between the partners and combining their skills to focus on environmental CRM production in accordance with ISO Guide 34. Production process includes good manufacturing practices for processing materials, method development and validation for homogeneity, stability and characterisation tests, characterisation of selected analytes together with additional information about matrix constituents, the calculation of individual uncertainties (between units inhomogeneity, long term stability, characterisation) and combination of uncertainties to determine overall uncertainty of the matrix reference materials. Inter laboratory comparison registered as EURAMET project is set as the ultimate project outcome, confirming the partners’ capabilities in applying newly acquired skills. T2 - BERM-14 International Symposium on Biological and Environmental Reference Materials CY - National Harbor, Maryland, USA DA - 12.10.2015 KW - Soil KW - Heavy metal KW - Environment KW - CRM KW - PFOA KW - PFOS PY - 2015 AN - OPUS4-38800 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jotanovic, A. T1 - Joint research project for the production of certified matrix reference materials for environmental analysis N2 - Reliable analysis of chemical indicators in water, sediment and soil samples for the purpose of environmental pollution assessment poses one of the greatest analytical challenges, having in mind the complexity of sample matrix and low concentrations of pollutants. Organics (pesticides, PAHs, PFOS, etc.) and heavy metals (Hg, Cd, Ni, Pb and As) represent target parameters. Laboratories performing sampling and tests in this field regulated by respective EU directives, need strong support in order to establish a quality system. It is necessary to provide appropriate calibrators i.e. matrix CRMs relates to the unique sample matrices representing typical samples in the geomorphological and anthropological sense. In addition to that, bearing in mind the complexity and instability of environmental samples, it is very difficult to obtain appropriate referents materials with no local providers. Our project is aiming to develop capacity to produce CRMs for environmental analysis by transferring the theoretical and practical know-how between the partners and combining their skills to focus on environmental CRM production in accordance with ISO Guide 34. Our project will have an impact on environmental monitoring in the partnering countries and on the scientific community, who will use the newly developed reference materials. Furthermore, partners will develop strategies for producing new CRMs either on their own or in cooperation. This will lead to regional CRM producers serving scientific and official laboratories. T2 - 2nd International Congress of Chemists and Chemical Engineers of B & H CY - Sarajevo, Bosnia and Herzegovina DA - 21.10.2016 KW - Soil KW - CRM KW - Environment KW - Heavy metal KW - PFOA KW - PFOS PY - 2016 AN - OPUS4-38801 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, Andre T1 - Impact Analysis of RAM Packages under Kinematic Aspects N2 - BAM is the German Federal Institute for Materials Research and Testing and the competent authority for mechanical and thermal safety assessment of transport packages for spent fuel and high level waste. In context with safety assessment of RAM packages BAM performed numerous drop tests in the last decades. The tests were mostly accompanied by extensive and various measurement techniques especially by instrumented measurements with strain gages and accelerometers. The procedure of drop testing and the resulting measurement analysis are the main methods to evaluate the safety against mechanical test conditions. Measurement techniques are dedicated to answer questions in regard to the structural integrity of a RAM package, the mechanical behavior of the prototype as well as of its content under impact conditions. Test results like deceleration-time functions constitute a main basis for the validation of assumptions in the safety analysis and for the evaluation of numerical calculations. In this context the adequate selection of accelerometers and measurement systems for the performance of drop tests is important. Therefore it is not only necessary to find suitable positions for the accelerometers at the test specimens, but also to consider technical boundary conditions as e.g. temperature. T2 - PATRAM 2016 CY - Kobe, Japan DA - 18.09.2016 KW - RAM packages KW - Drop test KW - Impact KW - Radioactive PY - 2016 AN - OPUS4-38860 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Guhl, Svetlana T1 - Process monitoring of an intensified continuous production unit with compact NMR spectroscopy N2 - Monitoring chemical reactions is the key to chemical process control. Today, mainly optical online methods are applied. NMR spectroscopy has a high potential for direct loop process control. Compact NMR instruments based on permanent magnets are robust and inexpensive analysers, which feature advantages like low maintenance, ease of use, and cryogen-free operation. Instruments for online NMR measurements equipped with a flow-through cell, possessing a good signal-to-noise-ratio, robustness, and meeting the requirements for integration into industrial plants (i.e., explosion safety and fully automated data analysis) are currently not available off the rack. Intensified continuous processes are in focus of current research. Flexible (modular) chemical plants can produce different products using the same equipment with short down-times between campaigns and quick introduction of new products to the market. In continuous flow processes online sensor data and tight closed-loop control of the product quality are mandatory. Otherwise there is a huge risk of producing large amounts of out-of-spec (OOS) products. This is addressed in the European Union’s Research Project CONSENS by development and integration of smart sensor modules for process monitoring and control within such modular plant setups. The presented NMR module is provided in an explosion proof housing with a module size of 57 x 57 x 85 cm and involves a compact 43.5 MHz NMR spectrometer together with an acquisition unit and a programmable logic controller for automated data preparation (phasing, baseline correction) and evaluation. Indirect Hard Modeling (IHM) was selected for data analysis of the low-field NMR spectra. A set-up for monitoring continuous reactions in a thermostated 1/8” tubular reactor using automated syringe pumps was used to validate the IHM models by using high-field NMR spectroscopy as analytical reference method. T2 - Quantitative NMR Methods for Reaction and Process Monitoring (NMRPM) CY - Kaiserslautern, Germany DA - 19.01.2017 KW - Online NMR spectroscopy PY - 2017 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-390117 AN - OPUS4-39011 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Online spectroscopy in micellar systems – A process analytical approach for a hydroformylation mini-plant N2 - Within the Collaborative Research Center InPROMPT a novel process concept for the hydroformylation of long-chained olefins is studied in a mini-plant, using a rhodium complex as catalyst in the presence of syngas. Recently, the hydroformylation in micro¬emulsions, which allows for the efficient recycling of the expensive rhodium catalyst, was found to be feasible. However, the high sensitivity of this multi-phase system with regard to changes in temperature and composition demands a continuous observation of the reaction to achieve a reliable and economic plant operation. For that purpose, we tested the potential of both online NMR and Raman spectroscopy for process control. The lab-scale experiments were supported by off-line GC-analysis as a reference method. A fiber optic coupled probe of a process Raman spectrometer was directly integrated into the reactor. 25 mixtures with varying concentrations of olefin (1-dodecene), product (n-tridecanal), water, n-dodecane, and technical surfactant (Marlipal 24/70) were prepared according to a D-optimal design. Online NMR spectroscopy was implemented by using a flow probe equipped with 1/16” PFA tubing serving as a flow cell. This was hyphenated to the reactor within a thermostated bypass to maintain process conditions in the transfer lines. Partial least squares regression (PLSR) models were established based on the initial spectra after activation of the reaction with syngas for the prediction of unknown concentrations of 1-dodecene and n-tridecanal over the course of the reaction in the lab-scale system. The obtained Raman spectra do not only contain information on the chemical composition but are further affected by the emulsion properties of the mixtures, which depend on the phase state and the type of micelles. Based on the spectral signature of both Raman and NMR spectra, it could be deduced that especially in reaction mixtures with high 1-dodecene content the formation of isomers as a competitive reaction was dominating. Similar trends were also observed during some of the process runs in the mini-plant. The multivariate calibration allowed for the estimation of reactants and products of the hydroformylation reaction in both laboratory setup and mini-plant. T2 - Quantitative NMR Methods for Reaction and Process Monitoring (NMRPM) CY - Kaiserslautern, Germany DA - 19.01.2017 KW - Online reaction monitoring PY - 2017 AN - OPUS4-39012 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Asadujjaman, Asad T1 - Functional polymer based on 2,6-diaminopyridine with tunable UCST behaviour in water/alcohol mixture N2 - Thermoresponsive polymers are of great importance in numerous applications such as bioseparation, drug delivery, diagnostic and microfluidic applications.[1-2] Only a few thermoresponsive polymers have been reported that present an Upper Critical Solution Temperature (UCST), i.e. phase separate from solution upon cooling, in a relevant temperature range and “green” solvents such as water or ethanol.[3] Indeed, polymers with UCST behavior below 60°C in alcohol or water/alcohol mixtures are extremely promising for the preparation of “smart” materials for sensing. In this work, two novel functional polymers of based on a 2,6-diaminopyridine motif were synthesized by free-radical polymerization. Their UCST-type transition temperature is tunable by varying either their concentration in solution or the type of solvent. Insights into this phenomenon are investigated using turbidimetry and temperature dependent dynamic light scattering. T2 - Konferenz CY - Lisbon, Portugal DA - 06.03.2017 KW - Thermoresponsive polymers KW - UCST-type polymers PY - 2017 AN - OPUS4-39579 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhne, Patrick T1 - Utilization of an ultra sound atomizer for spray granulation of oxide ceramic fine powder N2 - Spray drying based granulation processes aim for flowable granules neither containing voids nor hard shells thus leading to a homogenous microstructure in the green and sinter bodies without strength reducing large pores. The increase of the specific surface area due to the utilization of finer powders as raw materials makes the production of granules of demanded quality more sophisticated. Innovations regarding additives as well as process engineering are therefore required. While conventional spray granulation processes of ceramic materials are based on rotational, one stream or two stream nozzles for nebulization, the investigations in the ZIM project concentrate on the applicability of an ultra sound atomizer unit. A spray dryer comprised of the aforementioned ultra sound atomization unit implemented in a commercial spray dryer (Niro, Denmark) was used as test system. Potential advantages of the ultra sound nebulization are investigated for model systems of alumina, zirconia and a ZTA composite while focusing on solids content, yield, pressability and granule properties (size, size distribution, flowability, shape and microstructure) as well as the final sinter body properties (density, microstructure and flexural strength). First ultra sound spray drying experiments yielded granules with excellent processability. Spray drying of identical slurries, as before tested and optimized for a two stream nozzle atomization process, resulted in a more suitable size distribution for dry pressing (less particles below 20 µm) and a higher yield. Furthermore, sinter bodies produced of ultra sound granules seem to have less large pores and a more homogenous microstructure T2 - 92. Jahrestagung der deutschen keramischen Gesellschaft CY - Berlin, Germany DA - 20.03.2017 KW - Ceramics KW - Spray drying KW - Ultra sound KW - Atomization KW - Microstructure PY - 2017 AN - OPUS4-39588 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sentker, Kathirn A1 - Yildirim, Arda T1 - Fabrication of organic nanowires by melt infiltration of a discotic liquid crystal: A combined X-ray diffraction and optical birefringence study N2 - Optical polarimetry and angle dependent X-ray scattering in employed to study the structure of a discotic liquid crystal confined into nanochannels. The pore size dependence of the obtauned data are discussed in detail. T2 - DPG Spring Meeting 2017 CY - Dresden, Germany DA - 20.03.2017 KW - Discotic Liquid Crystals KW - Nanoconfinement PY - 2017 AN - OPUS4-39591 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raysyan, Anna T1 - Development of a quick test to screen for bisphenol A release from polymer materials N2 - Bisphenol A (BPA) is a common industrial chemical that is widely used as a monomer or additive in the production of polycarbonate plastics and other polymeric materials. The primary way of exposure to BPA for most people is assumed to be a direct con-tamination of food and water through use of containers, bottles, and other plastic stor-age. BPA has been identified as an important endocrine disrupting compound (EDC). It can interfere with hormonal activities like biosynthesis, metabolism and elimination of natural blood-borne hormones. Moreover, BPA can originate environmental problems. A spectrum of methods have been developed with the aim of determining BPA in water. Immunoassays appear to comply with sensitivity, rapidity, and low cost requirements for effective monitoring. In this work a comparative analysis was conducted of the effect of temperature and the choice of buffers, as well as the substrate at various stages of an ELISA (enzyme-linked immunosorbent assay). The method has been optimized and has shown good repeatability and sensitivity. The results obtained from ELISA will be used as the basis for the development of a Lateral Flow ImmunoAssay (LFIA). T2 - EBS 2017 CY - Potsdam, Germany DA - 20.03.2017 KW - Immunoassay KW - ELISA KW - Bisphenol A PY - 2017 AN - OPUS4-39523 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krentel, Daniel T1 - Sicherheit in Technik und Chemie - Großversuche im Bereich Brand- und Explosionsschutz N2 - Das Poster enthält eine Beschreibung der umfangreichen Möglichkeiten, die die BAM mit ihrem TTS für Großversuche im Bereich Brand- und Explosionsschutz bereithält. T2 - Infoveranstaltung des BMBF zum EU-Programm "Sichere Gesellschaften - Horizont 2020" CY - Bonn, Germany DA - 28.03.2017 KW - Großversuche KW - Explosionsschutz KW - Alternative Antriebe KW - Behälterversagen KW - Alternative Kraftstoffe PY - 2017 AN - OPUS4-39608 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schoknecht, Ute T1 - Leaching tests for determination of the mobile fraction in construction products N2 - Construction products are often complex materials and often contain a large number of additives like plasticizers, solvents, stabilizers and pigments, which can be released to the environment during usage by leaching when the product is in contact with water. The impact of potentially hazardous substances on the environment depends on actual release rather than the total content in the products. Depending on the compound and on the matrix, only a small portion is transferred to the environment and becomes bioavailable. Leaching tests were developed and standardized by the European Committee for Standardization (CEN) to determine the potential release of construction products. T2 - Meeting International Biodeterioration Research Group CY - Berlin, Germany DA - 26.04.2017 KW - Leaching, Risk assessment, construction products PY - 2017 AN - OPUS4-40067 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yildirim, Arda T1 - Structure, Dynamics and Phase Behavior of a Discotic Liquid Crystal Confined in Nanoporous Anodic Aluminum Oxide Membranes N2 - The interest in porous anodic aluminum oxide (AAO) has been rapidly growing due to its numerous applications in separation, catalysis, energy generation and storage, electronics, and sensors. From the scientific point of view, AAO is a topical interest in soft matter fields. Spatial confinement of soft matter in nanoporous media influences its structure, thermodynamics, and mobility. Embedding polymers and liquid crystals into nanopores of AAO results in a 2D nanoconfinement of these materials. This confinement affects their properties, compared to the bulk, such as phase transition temperatures and enthalpies, molecular mobility, and architecture of the crystallization. On the other hand, discotic liquid crystals (DLCs) are a promising class of soft matter for electronic applications. This is due to their ability to organize and stack themselves into columns in a hexagonal columnar mesophase, a mesophase in between the plastic crystalline and isotropic phase, driven by the overlap of the π orbitals of their aromatic core. This leads to a high charge-carrier mobility along the column axis. Further, these columns could then be considered as “molecular nanowires”. In this study, 2,3,6,7,10,11 hexakis[hexyloxy] triphenylene (HAT6), a triphenylene based DLC, was confined into nanoporous AAO membranes. The structure, dynamics and the phase behavior of the confined HAT6 were investigated by broadband dielectric spectroscopy (BDS) and differential scanning calorimetry (DSC). HAT6 was embedded into nanoporous AAO membranes by melt infiltration in the isotropic phase under argon atmosphere. The membranes have parallel aligned cylindrical nanopores, with pore diameter of 10, 20, 25, 40, 80, 120 and 180 nm. The filling degree for each sample was checked by thermogravimetric analysis (TGA) in order to ensure complete filling. Bulk HAT6 forms a hexagonal columnar phase; in between the isotropic phase above 371 K and the plastic crystalline phase below 340 K. Unlike the bulk, the confined HAT6 split the plastic crystalline-to-hexagonal columnar phase transition in two, which might be interpret as two different phase structures; close to the wall and at the pore center. Moreover, the isotropic-to-columnar transition of the confined HAT6 shifted, with decreasing pore diameter, to lower temperatures. Furthermore, pore surfaces of a series of membranes were chemically modified, resulting in a more hydrophobic pore surface than the unmodified ones. HAT6 was embedded into the modified membranes by the same aforementioned preparation. The influence of the changed host-guest-interaction, on the structure, dynamics, and the phase behavior of HAT6 confined in the modified membranes, was also investigated by BDS and DSC. T2 - 9th International Conference on Porous Media & Annual Meeting CY - Rotterdam, The Netherlands DA - 08.05.2017 KW - Nanoporous media KW - Anodic Aluminum Oxide KW - Discotic Liquid Crystal PY - 2017 AN - OPUS4-40089 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hicke, Konstantin T1 - Towards efficient real-time submarine power cable monitoring using distributed fibre optic acoustic sensors N2 - We present experimental results investigating the applicability of distributed fibre optic acoustic sensing (DAS) for condition and threat monitoring in submarine power cables. T2 - 25th International Conference on Optical Fiber Sensors CY - Jeju-City, Jeju, Republic of Korea DA - 24.04.2017 KW - Distributed fibre optic sensors KW - Distributed fibre optic acoustic sensing KW - Condition monitoring KW - C-OTDR KW - Power cable monitoring PY - 2017 AN - OPUS4-40078 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hicke, Konstantin T1 - Distributed fibre optic acoustic sensing for condition and structural health monitoring applications N2 - We present current and previous research projects and activities at BAM related to distributed fibre optic acoustic sensing (DAS) for condition monitoring purposes. Furthermore, we show the experimental capabilities of our DAS equipment and portray other BAM competences in fibre optic sensing that could be combined with DAS. T2 - EAGE/DGG Workshop on Fibre Optics Technology in Geophysics CY - Potsdam, Germany DA - 31.03.2017 KW - Condition monitoring KW - Structural health monitoring KW - Distributed fibre optic acoustic sensing KW - DAS KW - Fibre optic sensors PY - 2017 AN - OPUS4-40086 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Decontamination of biocidal loaded wooden artworks using femtosecond and nanosecond laser processing N2 - Until the end of the 1980s many wooden artworks underwent surface treatment by liquid preservatives, e.g. Hylotox-59. As a result, DDT (dichlorodiphenyltrichloroethane) crystal structures are formed on the wood surfaces by the "blooming" of chlorine compounds. In addition to an aesthetic disturbance, it is assumed that DDT represents a health risk. Even decades after applying, the toxins in the wood preservatives are still detectable. Contaminated waste wood with natural biocide ageing, gilded and wood carved elements of an old picture frame and wooden samples with paint layers were provided by the Schlossmuseum Sondershausen, Germany. Laser cleaning of areas of some square millimeters on the surfaces of the objects was done by means of femtosecond and nanosecond laser pulses. For 30-fs laser pulses at 800 nm wavelength a line-wise meandering movement of the object under the focused beam was performed. 10-ns laser pulses at 1064 nm and 7-ns laser pulses at 532 nm wavelength were applied to the sample surface using a scanner. Before laser application, a chlorine measurement was done by X-ray fluorescence analysis (XRF) as reference. After laser processing, the XRF analysis was used again at the same surface position to determine chlorine depletion rates of up to 75% (30 fs, 800 nm), 70% (10 ns, 1064 nm), and 22% (7 ns, 532 nm). For the application of 30-fs laser pulses on waste wood, no crystalline DDT residues remain on the sample surface observed utilizing optical microscopy. T2 - European Materials Research Society (EMRS) Spring Meeting 2017, Symposium X “New frontiers in laser interaction: from hard coatings to smart materials” CY - Strasbourg, France DA - 22.05.2017 KW - Femtosecond laser KW - Nanosecond laser KW - Laser cleaning KW - DDT KW - Wooden artworks PY - 2017 AN - OPUS4-40410 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schadow, Florian T1 - Sende-Empfangs-Prüfköpfe auf Ferroelektret-Basis für Luftultraschall-Anwendungen N2 - Leichtbaustrukturen aus Verbundwerkstoffen stellen einen immer größeren Anteil im Flugzeug- und Automobilbau dar. Hiermit steigt die Nachfrage nach zuverlässigen, zerstörungsfreien Prüfmethoden, welche an solche Strukturen angepasst sind. Besonders Luftultraschall (LUS) eignet sich für diese Aufgabe, da hier kein Koppelmedium benötigt wird. Derzeit wird für diese Methode jedoch oft ein beidseitiger Bauteilzugang für eine Prüfung in Durchschallung vorausgesetzt. Handelsübliche Prüfköpfe für Luftultraschallanwendungen nutzen zudem meist Anpassschichten um den Impedanzunterschied zwischen Schwinger und Luft zu reduzieren. Sowohl Signal-Rausch-Abstand als auch die Bandbreite der resultieren-den Prüfköpfe ist für viele Anwendungen jedoch nicht ausreichend. Durch den Einsatz von Ferroelektreten wie zellulärem Polypropylen (zPP) kann hingegen vollständig auf Anpassschichten verzichtet werden. Hierbei handelt es sich um polarisierte, zelluläre Polymerschichten mit sehr geringer Dichte, Steifigkeit und Schallgeschwindigkeit. In diesem Beitrag stellen wir drei verschiedene Sende-Empfangs-Prüfköpfe vor, welche auf zellulärem Polypropylen basieren. Anhand von Schallfeld, Signal-Rausch-Abstand und Sendepegel werden diese Prüfköpfe charakterisiert. Die Ergebnisse werden mit den Ergebnissen von Referenzprüfköpfen ohne Sende-Empfangs-Charakteristik verglichen. Bei den Referenzprüfköpfen werden sowohl handelsübliche LUS-Prüfköpfe, sowie bisher entwickelte Prüfköpfe aus zellulärem Polypropylen berücksichtigt. T2 - DGZFP Jahrestagung 2017 CY - Koblenz, Germany DA - 22.05.2017 KW - Sende-Empfangs Prüfkopf KW - Ferroelektret KW - Zelluläres Polypropylen KW - Charakterisierung KW - Luftultraschall PY - 2017 AN - OPUS4-40430 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Andree, Stefan T1 - Production of precursors for micro-concentrator solar cells using femtosecond Laser-Induced Forward Transfer N2 - Indium is a constituent of copper-indium-gallium-diselenide (CIGSe), which is an excellent absorber material for highly-efficient thin film solar cells but a rare element. A micro-concentrator solar cell design can achieve indium saving along with increased solar cell conversion efficiency. In such a solar cell architecture the CIGSe material is arranged in micrometer sized islands in contrast to the deposition of a thin layer used in standard cells. In this paper, the production of spatially arranged precursor islands consisting mainly of indium using laser-induced forward transfer (LIFT) is presented. The donor is a glass substrate (150 µm thick) coated with layers of copper (20-150 nm) and indium (200-1000 nm). The receiver is an 800 nm thick molybdenum film on glass intended as back contact for CIGSe solar cells. Islands of the donor material are successfully transferred via LIFT by employing 30-fs laser pulses with 800 nm wavelength and 60 µm focal spot diameter. The spacing between donor and receiver is fixed at 150 µm and the material transfer is performed by a single pulse for each precursor island. The transferred material is characterized by scanning electron and optical microscopy, profilometry and energy dispersive X-ray analyses. Matrices of copper-indium precursors can be transferred in a spatial arrangement adapted to the geometry of micro lens arrays needed for micro-concentrator solar cells. T2 - European Materials Research Society (EMRS) Spring Meeting 2017, Symposium X “New frontiers in laser interaction: from hard coatings to smart materials” CY - Strasbourg, France DA - 22.05.2017 KW - Copper indium gallium diselenide (CIGSe) KW - Indium KW - Laser-induced forward transfer (LIFT) KW - Femtosecond laser KW - Micro-concentrator solar cell PY - 2017 AN - OPUS4-40433 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mitzscherling, Steffen T1 - Verbesserung und Qualifizierung der Ultraschallprüfung von Mischnähten im Primärkreis von KKW N2 - Die im Primärkreislauf von Kernkraftwerken anzutreffenden austenitischen Schweiß- und Mischnähte sind nicht nur extrem sicherheitsrelevant, sondern stellen auch sehr hohe Anforderungen an die Materialprüfung. Neben der eingeschränkten Zugänglichkeit ist das makroskopische Gefüge der Schweißnaht für die Prüfung mit Ultraschall von höchster Bedeutung. Um Materialfehler zuverlässig in Position und Größe bestimmen zu können, müssen die Kornorientierungen und die elastischen Konstanten des anisotropen Schweißnahtgefüges bekannt sein. Für die bildgebende Darstellung möglicher Materialfehler kommen folgende Arbeitsschritte zum Einsatz: Zunächst wird die Schweißnaht durchschallt, um mit einem inversen Verfahren wichtige Schweißnahtparameter wie beispielsweise die Kornorientierung bestimmen zu können. Auf der Basis dieser Parameter werden im nächsten Schritt die Schallwege mittels Raytracing (RT) simuliert. Zuletzt werden dieser RT-Simulation die Messdaten (A-Scans) von verschiedenen Sender- und Empfängerpositionen zugeordnet und nach der SAFT-Methode (Synthetic Aperature Focusing Technique) zeitaufgelöst überlagert. Die Kombination aus inversem Verfahren, RT und SAFT gewährleistet auch in anisotropen Werkstoffen eine ortsrichtige Visualisierung der Fehler. Wir erläutern diese drei Verfahren und stellen die Prüfanordnung von Prüfkörpern mit künstlichen Testfehlern vor. Messdaten sowie deren Auswertung werden mit den Ergebnissen einer CIVA-Simulation verglichen. T2 - DGZfP-Jahrestagung 2017 CY - Koblenz, Germany DA - 22.05.2017 KW - Zerstörungsfreie Prüfung KW - Ultraschall KW - SAFT KW - Schweißnaht KW - Austenit PY - 2017 AN - OPUS4-40434 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Axel T1 - Einfluss der Alterung auf das Sorptionsverhalten von Mikroplastik, eine Laborstudie mit BTEX und Etherverbindungen N2 - Mikroplastik (MP) findet sich in aquatischen Ökosystemen weltweit und es konnte gezeigt werden, dass hydrophobe organische Schadstoffe an MP angereichert werden. Es ist bekannt, dass teilkristalline und amorphe Polymere unterschiedliche Sorptionsver-halten aufweisen. Der Einfluss des Alterungszustandes der MP-Partikel auf das Sorptionsverhalten ist nicht hinreichend geklärt. In dieser Studie wurden amorphes Polystyrol (PS) und teilkristallines Polypropylen (PP) in Form von Industriepellets gezielt gealtert und mikroskopisch sowie mittels XPS, FTIR und DSC charakterisiert. Anschließend wurde in Batchexperimenten die Sorption von potenziell wassergefährdenden Kraftstoffbestandteilen (Ether und BTEX) an den Pellets mittels Headspace-Gaschromatografie untersucht. T2 - Wasser 2017 - Jahrestagung der Wasserchemischen Gesellschaft CY - Donaueschingen, Germany DA - 22.05.2017 KW - Mikroplastik KW - Alterung KW - Sorption KW - BTEX PY - 2017 AN - OPUS4-40445 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisentraut, Paul T1 - Analyse von Mikroplastik Partikeln aus Umweltproben mit der TED-GC-MS N2 - Die weltweite Produktion von synthetischen Kunststoffen steigt stetig und ein Teil gelangt in die Umwelt. Die Kunststofffragmente werden durch Umwelteinflüsse zerkleinert und bilden schließlich Mikroplastik, dessen Gefährdungspotential intensiv diskutiert wird. Zur Beobachtung und Bewertung der Situation ist eine leistungsstarke und schnelle Analytik erforderlich, jedoch existieren noch keine harmonisierten Verfahren. Die ThermoExtraktionDesorption-GasChromatograpie-MassenSpektrometrie (TED-GC-MS) nutzt polymer-spezifische Zersetzungsprodukte und bietet durch ihre Schnelligkeit und Robustheit Vorteile gegenüber anderen Verfahren. T2 - Tagung der Wasserchemischen Gesellschaft 2017 CY - Donaueschingen, Germany DA - 22.05.2017 KW - Mikroplastik KW - Thermoanalytik KW - TED-GC-MS PY - 2017 AN - OPUS4-40452 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prager, Jens T1 - Einfluss der Aufbaurichtung und Porosität additiv gefertigter Stahl- und Aluminiumwerkstoffe auf lokale akustische Eigenschaften N2 - Die Ultraschallprüfung additiv gefertigter Metallbauteile setzt eine genaue Kenntnis der akustischen Eigenschaften des Werkstoffs voraus. Insbesondere bei bildgebenden Rekonstruktionsverfahren müssen Anisotropien berücksichtigt werden, um ausreichende Abbildungsgenauigkeit zu erhalten. Es ist davon auszugehen, dass der lagenweise Aufbau des Werkstoffs beim selektiven Laserschmelzen eine bevorzugte Kornorientierung erzeugt, die sich in einer akustischen Anisotropie widerspiegelt. Zudem wird erwartet, dass die besondere Kornstruktur Einfluss auf die Schallschwächung hat. Ziel der vorliegenden Untersuchungen war es, die akustischen Eigenschaften verschiedener additiv gefertigter Werkstoffe zu analysieren und die Ergebnisse mit konventionell gefertigten Werkstoffen zu vergleichen. In die Untersuchungen wurden verschiedene Stahl- und Aluminiumproben mit unterschiedlicher Aufbaurichtung einbezogen. Die Ergebnisse, sowohl aus Tauchtechnik als auch aus Kontakttechnikuntersuchungen, zeigen eine signifikante Abhängigkeit der Schallausbreitungsgeschwindigkeit von der Aufbaurichtung. Zudem werden örtliche Schwankungen der gemessenen Schallgeschwindigkeiten sowie ein Einfluss auf die Schallschwächung sichtbar. T2 - DGZfP Jahrestagung CY - Koblenz, Germany DA - 22.05.2017 KW - Additive Fertigung KW - Ultraschallprüfung PY - 2017 AN - OPUS4-40405 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Casperson, Ralf T1 - Gegenüberstellung von Wirbelstromprüfung und aktiver Thermografie an CFK-Versuchskörpern N2 - In vielen Bereichen der Technik haben Konstruktionen unter Einsatz von CFK-Bauteilen und Komponenten die klassischen Metalle abgelöst. Die zerstörungsfreie Prüfung solcher CFK-Bauteile gewinnt somit zunehmend an Bedeutung. Ein mögliches Prüfverfahren ist dabei die Wirbelstromprüfung. Aufgrund der relativ geringen elektrischen Leitfähigkeit von CFK-Komponenten kommt hierbei häufig die sogenannte HF-Wirbelstromprüfung zum Einsatz. In verschiedenen Untersuchungen der BAM konnten jedoch auch mit Wirbelstromprüfsystemen in niedrigen Frequenzbereichen gute Ergebnisse erzielt werden. Um die Möglichkeiten und Grenzen dieser konventionellen Wirbelstromprüfung auszuloten, wurden Messungen an Versuchskörpern durchgeführt, welche bereits bei der Validierung der Blitz- und Lock-in-Thermografie für neue Verfahrensnormen erfolgreich eingesetzt wurden. Ein Typ dieser Versuchskörper sind Flachproben aus CFK von 6 mm Dicke. In diesen wurden Flachbodenbohrungen mit Durchmessern zwischen 4 mm und 24 mm eingebracht. Die Restwandstärken liegen zwischen 0,06 mm und 3,66 mm. Ein weiterer CFK-Versuchskörper hat die Geometrie eines Stufenkeiles. Bei verschiedenen Stufenkeilen sind Wanddicken zwischen 1,4 mm und 5,4 mm realisiert worden. In diesen wurden künstliche quadratische Delaminationen mit Kantenlängen zwischen 2 mm und 20 mm eingebracht. Die Ergebnisse der Wirbelstromprüfung werden denen der aktiven Thermografie gegenübergestellt. Zur Nachbildung von Kompositwerkstoffen wurden die flachen Versuchskörper mit geeigneten Versuchskörpern aus Aluminium und Stahl kombiniert. Die Wirbelstromprüfungen wurden mit einem handelsüblichen Prüfgerät im Frequenzbereich zwischen 500 Hz und 3 MHz und entsprechend angepassten Sensoren durchgeführt. T2 - DGZfP Jahrestagung CY - Koblenz, Germany DA - 22.05.2017 KW - Wirbelstromprüfung KW - Thermografie KW - CFK PY - 2017 AN - OPUS4-40408 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Casperson, Ralf A1 - Pohl, Rainer T1 - Zerstörungsfreie Prüfung mit Wirbelstrom zur Qualitätskontrolle beim Schienenschleifen N2 - In verlegten Eisenbahnschienen entstehen durch Rollkontaktermüdung rissartige Oberflächenschädigungen. Der geschädigte Bereich wird im Rahmen der Schieneninstandhaltung regelmäßig abgetragen, um zu verhindern, dass durch unkontrolliertes Risswachstum schwerwiegende Schienenschäden entstehen. Hierzu werden u. A. Schienenschleifzüge eingesetzt. Früher wurde das Schleifergebnis einer Sichtprüfung unterzogen. Es kommt jedoch vor, dass Risse in der Oberfläche beim Schleifen zugeschmiert oder durch Schleifriefen maskiert werden, so dass diese nicht mehr sichtbar obwohl noch vorhanden sind. An der BAM wurde ein Wirbelstromprüfsystem entwickelt, das sowohl zur Planung als auch der Qualitätskontrolle der Schieneninstandhaltung genutzt wird. Dieses System ist in der Lage, Schädigungen zu detektieren und deren Schädigungstiefe zu bestimmen, selbst dann, wenn optisch keine Schädigung zu erkennen ist. Seit 2013 ist die Qualitätskontrolle mit Wirbelstromprüfsystemen bei der Schienenbearbeitung fest im Regelwerk der DB verankert. T2 - Schleiftagung 2017 CY - Stuttgart, Germany DA - 01.02.2017 KW - Zerstörungsfreie Prüfung KW - Wirbelstromprüfung KW - Schienenschleifen PY - 2017 AN - OPUS4-40379 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Glaeser, J. A1 - Oberpaul, M. T1 - Exploiting termite nest microbiomes for antibiotic drug discovery by using an ultra-high throughput Microfluidics/FACS driven pipeline N2 - Bacterial infections are a global threat to human health1. Especially nosocomial infections with multidrug-resistant Gram-negative bacteria challenge public health systems and endanger successful treatment of patients in many modern medicine applications as e.g. organ transplant. In the last three decades classical approaches failed to find novel chemical scaffolds suitable for the development of antibiotics that reach the market and caused the modern antibiotics crisis1. Insect microbiomes produce potent antibiotics with low toxicity to eukaryotic cells to defend their hosts against entomopathogenic microorganisms2. In order to exploit insect microbiomes efficiently and to identify novel antibiotics producing bacteria, we implemented an ultra-high throughput Microfluidics/FACS (fluorescence-associated cell sorting) cultivation and screening pipeline. Here we present the technical aspects of our pipeline including downstream processing of identified producer strains and its suitability for antibiotics discovery. T2 - Tagung DGHM und VAAM Microbiology and Infection 2017 CY - Würzburg, Germany DA - 05.03.17 KW - Antibiotics KW - Micobiomes KW - Termites PY - 2017 AN - OPUS4-39903 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank T1 - Testing of pressurized vessels N2 - The results are based on data1. Figure 3 displays temperatures of the tank wall and of the gas phase over testing time. It can be seen that a complete coating strongly delayed the heating of tank wall and gas phase, whereas the partly coated tanks only had a minor influence on temperature development. There was no significant difference between a half coated and a thirdly coated tank measurable. Figure 4 shows the internal pressure of tanks over testing time. Only the fully coated tank enabled a low pressure over 90 min testing time. Hence, a complete coating is necessary to guarantee the fire safety of hazmat tanks and a partly coating is not sufficient. T2 - Annual Conference on Engineering and Information Technology CY - Nagoya - Japan DA - 29.03.2017 KW - Fire KW - Testing KW - Vessels KW - Dangerous goods PY - 2017 AN - OPUS4-39843 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schlichting, S. A1 - Hönig, Gerald T1 - Tuning of the quantum-confined Stark effect in wurtzite [0001] nanostructures by the internal-field-guarded-active-region design N2 - In this work we eliminate the QCSE without having any special requirements on the growth procedure or the material. Hönig et al. developed the Internal-Field-Guarded-Active-Region Design (IFGARD), which we experimentally investigate in this work based on GaN/AlN nanodiscs (NDs). T2 - Compound Semiconductor Week 2017 CY - Berlin, Germany DA - 14.05.2017 KW - Halbleiterphysik KW - Nanophysik KW - Optoelektronik KW - Piezopolarisation KW - Spontane Polarisation PY - 2017 AN - OPUS4-40174 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Illner, M. T1 - Operation and optimal control of multiphase systems – Hydroformylation in microemulsions on the mini-plant scale N2 - develops new process concepts, involving innovative tuneable solvent systems to enable rather difficult or inapplicable synthesis paths. One possible concept is the hydroformylation of long-chained alkenes in microemulsions. For this, a modular mixer-settler concept was proposed, combining high reaction rates and efficient catalyst recycling via the application of technical grade surfactants. The feasibility of such a concept is evaluated in a fully automated, modular mini-plant system within which the characteristics of such a multiphase system pose several obstacles in operating this mini-plant. Maintaining a stable phase separation for efficient product separation and catalyst recycling is complicated by small and highly dynamic operation windows as well as poor measurability of component concentrations in the liquid phases. In this contribution, a model-based strategy is presented to enable concentration tracking and phase state control within dynamic mini-plant experiments. Raman spectroscopy is used as an advanced process analytical tools, which allows for online in-situ tracking of concentrations. Combined with optical and conductivity analysis optimal plant trajectories can be calculated, solving a dynamic optimization problem under uncertainty. Applying these, a stable reaction yield of 40 % was achieved, combined with an oil phase purity of 99,8 % (total amount of oily components in the oil phase) and a catalyst leaching below 0.1 ppm. T2 - 4th European Conference on Process Analytics and Control Technology (EuroPACT 2017) CY - Potsdam, Germany DA - 10.05.2017 KW - Process monitoring KW - Hydroformylation KW - Mini-plant KW - Process control KW - Process analytical technology KW - EuroPACT KW - InPROMPT PY - 2017 UR - http://dechema.de/en/europact17.html AN - OPUS4-40233 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Iznaguen, Hassan T1 - Behaviour and resistance of selected model plastics to simulated environmental stress N2 - MaUS is an acronym for ”Material und Umweltsimulationen“. Plastics are in the focus of environmental politics due to their long term behaviour and therefore to their persistence. Not only that they appear as visible contaminants in the sea and on the beach, but their unknown behaviour concerning their additives as well as the related transformation products are anxious. Therefore, we wish to establish a certified reference method to provide a method for testing plastics. Aim of this project is the development of fast motion standard reference methods for testing plastics regarding to their environmental compatibility. To establish these testing methods, we use polystyrene (PS) and polypropylene (PP) with environmental relevant brominated flame retardants, known for their persistent bioaccumulative and toxic (PBT) properties. In case of PS the material contains 1 wt% of 1,2,5,6,9,10-hexabromocyclododecan (HBCD) and in case of PP 0.1 wt% bromodiphenylether (BDE-209), which is known as a substance of very high concern (SVHC). Furthermore, we use polycarbonate (PC), which is still used as material in baby flasks and releases Bisphenol A (BPA), an estrogenic active substance. As an additional material PTFE is used for its importance as a source for two ubiquitous environmental substances (PFOS and PFOA), whose toxicological effects are still incompletely known. The focus in this current work is set on the transfer of potential pollutants out of applied materials mentioned above into environmental compartments like water or soil. Here an accelerated aging concept should be developed to shortened time consuming natural processes. For these resulting simulations we use a programmable weathering chamber with dry and wet periods and with high and low temperatures. These programmes run for several weeks and according to a defined sampling schedule we take water samples, run a clean-up procedure by SPE (Molecular imprinted polymers (MiPs) resp. polymer based cartridges (Waters Oasis HLB)) and analyse them by HPLC-UV resp. LC-MS/MS. Of most interest in case of flame retardants are photocatalytic transformation products. Therefore, we conduct a non-target-screening resp. a suspected target-screening by LC-MS/MS and HRMS. T2 - ANAKON 2017 CY - Tübingen, Germany DA - 03.04.2017 KW - Simulation KW - Environment KW - Pollutants PY - 2017 AN - OPUS4-40252 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goedecke, Caroline T1 - Transformation of the antidiabetic drug metformin N2 - For years there have been more and more reports on the presence of drugs in the aquatic environment. Due to the demographic change, the consumption of pharmaceuticals has risen sharply. After taking the drugs, they are partly metabolized in the human body. However, the metabolism is not complete so that both the metabolites and non-metabolized amounts of the parent compounds are excreted. These compounds reach the waste water and afterwards the sewage treatment plants. In sewage treatment plants transformation products can be formed by the oxidative conditions during wastewater treatment processes. The transformation products may have a higher toxicity than the actual environmental pollutants and are often only partly removed during the waste water treatment. Since a lot of these compounds are still unknown, the transformation products are not detected by target analysis used in sewage treatment plants and are often released undetected in the aquatic ecosystems. The released substances may be subject to additional transformation processes in the environment. Pharmaceuticals produced in high amounts can be already detected in the μg/L range in water bodies worldwide. Metformin and its major transformation product guanylurea are one of the main representatives. Metformin is the drug of choice for treating type 2 diabetes. The drug therapy for diabetes mellitus has increased significantly in recent years. In the year 2015 1500 tons of metformin were prescribed in Germany (for statutory insured persons). Metformin is not metabolized in the human body and is excreted unchanged therefore concentrations between 57 μg/L and 129 μg/L are found in German waste water treatment plants influents. In this work the transformation of the antidiabetic drug metformin is investigated. The degradation of metformin is initialize by commercial water treatment techniques like UV-radiation or noncommercial techniques like heterogenous photocatalysis based on titanium dioxide. The degradation of metformin and resulting transformation products are analyzed by LC-MS/MS and LC-HRMS. T2 - ANAKON 2017 CY - Tübingen, Germany DA - 03.04.2017 KW - Metformin KW - Transformation PY - 2017 AN - OPUS4-40254 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mülow-Stollin, Ulrike T1 - Investigation of sorption of environmental pollutants to virgin and aged microplastics N2 - Plastics are a diverse group of materials used in packaging, construction, medical applications, and many more. Due to their favourable properties their production and consequently their input into natural systems has increased drastically over the last decades. In the environment (photo-)oxidation processes and mechanical abrasion may then lead to the decomposition of the plastics. During this process microplastics (<5 mm) are formed. It has been noted that xenobiotics which are present in the same compartments can sorb to microplastics. However, knowledge on this topic is still limited. The work presented here aimed to investigate the sorption of the type 2 diabetes drug metformin and the triazole fungicide difenoconazole to virgin polyamide (PA), polypropylene (PP), and polystyrene (PS). Additionally, sorption to cryo-milled PP and acid-treated PA was studied. The latter was also characterised by Fourier transform infrared spectroscopy (FTIR), gel permeation chromatography (GPC), and dynamic scanning calorimetry (DSC). Sorption experiments were planned on the basis of a full factorial design with agitation, salinity, and pH value as parameters. Results of the study revealed that metformin did not show any affinity towards the tested materials. Difenoconazole however, sorbed to all microplastics. Data analysis showed that agitation is the main influencing factor, whereas salinity and the pH value held little to no significance. Mechanical and chemical treatment of the polymers led to enhanced sorption of difenoconazole. Long-term sorption experiments confirmed the hypothesis that particle size strongly influences the time until sorption-desorption equilibrium is reached. T2 - ANAKON 2017 CY - Tübingen, Germany DA - 03.04.2017 KW - Microplastic KW - Pollutants KW - Environment PY - 2017 AN - OPUS4-40255 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fisicaro, P. T1 - Collaborative study on mercury and methylmercury quantification in fish samples from the German Environmental Specimen Bank N2 - Mercury in its many chemical forms is highly toxic to human, animal and environmental health. The assessment of the ongoing effect of mercury on humans and the environment remains of high importance and is critically dependent on accurate measurements to assess concentrations and trends. T2 - European Winter Conference on Plasma Spectrochemistry CY - Sankt Anton am Arlberg, Austria DA - 19.02.2017 KW - Methyl mercury KW - Fish PY - 2017 AN - OPUS4-40245 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Development of an enzymatic digestion method for the quantification of mercury species in biota and fish N2 - The toxicity and transport mechanisms of mercury and its species in the environment are dependent on the chemical form. Here, the knowledge of the species analysis of organic and inorganic mercury compounds is of interest. Only measuring the total mercury content gives just a little information about the potential risk to human beings and the health of biota and fish respectively. In comparison methyl mercury is the more toxic species than the inorganic form due to its solubility in lipids and it binds strongly to bio ligands like sulfur containing amino acids bound in proteins. This could affect the functionality of enzymes. A variety of analytical methods have been used for the measurement of mercury species like liquid and gas chromatographic separation and the detection by inductively coupled plasma mass spectrometry and common electron impact mass spectrometry. T2 - Workshop on mercury monitoring and regulation CY - Berlin, Germany DA - 04.04.2017 KW - Methyl mercury KW - Enzymatic digestion KW - Fish PY - 2017 AN - OPUS4-40246 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Umweltverträglichkeit und -beständigkeit von Materialien und Produkten hinsichtlich der Migration von Schadstoffen N2 - Gegenstand des Projekts ist die Prüfung der Umweltbeständigkeit und -verträglichkeit von Materialien und Produkten hinsichtlich der Emission von potenziellen Schadstoffen in die Umwelt. Hierzu werden chemisch-physikalische Einflüsse (Bewitterung) und mikrobielle Beanspruchungen an Modellmaterialien evaluiert. So werden die Freisetzungsraten von Schadstoffen in Abhängigkeit der Beanspruchung beschrieben. Als Modellmaterialien kommen die Polymere Polycarbonat, Polytetrafluorethylen, Polystyrol und Polypropylen zum Einsatz. Synergistische Effekte der Bewitterungsparameter und der mikrobiologischen Beanspruchung sollen dabei ebenso betrachtet werden, wie die gezielte Alterung. Auch findet eine Beschreibung des Verhaltens der ausgetragenen Schadstoffe in den Umweltkompartimenten Boden oder Wasser statt. Hier sind mit Hilfe der zu entwickelnden Screening- und non-Target-Analyseverfahren die Transformation und der Metabolismus durch Mikroorganismen zu beschreiben. Aus den Ergebnissen sollen Korrelationen zwischen den künstlichen Alterungsverfahren und realen Szenarien abgeleitet werden, die es gestatten, Schnellprüfverfahren zu etablieren, die die Simulation der realen Beanspruchungen im Zeitraffermodell anwendbar machen. Somit sollen standardisierbare Schnellbean-spruchungsverfahren erarbeitet werden, die als Prüfeinrichtungen etabliert werden und von externen Auftraggebern zur Prüfung der Umweltbeständigkeit und -verträglichkeit von neuen Materialien genutzt werden können. Die Umweltwirkungen (chemisch-physikalisch und mikrobiologisch) sollen so definiert eingesetzt werden, dass eine reproduzierbare Prüfung möglich wird. Aus diesen Verfahren und Methoden sollen Normen abgeleitet werden, die eine standardisierte Materialprüfung ermöglichen. T2 - ANAKON 2017 CY - Tübingen, Germany DA - 03.04.2017 KW - Materialien KW - Freisetzung KW - Umweltschadstoffe PY - 2017 AN - OPUS4-40247 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liehr, Sascha T1 - Distributed strain and temperature change detection using optical frequency domain reflectometry N2 - We propose the optical frequency Domain reflectometry (OFDR) technique based on intensity modulation frequency sweep measurement for coherent distributed sensing applications. By evaluating interferometric Rayleigh scattering changes along the fibre, strain and temperature changes can be detected with a sensitivity in the ne-range and 10 mK temperature resolution. Low Vibration frequencies and vibrations up to the kHz-range can be detected by differential power change evaluation in the spatial domain. This OFDR approach is a low-cost alternative to distributed vibration sensing based on C-OTDR up to distances of several kilometres. T2 - EAGE/DGG Workshop on Fibre Optics Technology in Geophysics CY - Potsdam, Germany DA - 31.03.2017 KW - Optical fiber sensor KW - Distributed sensing KW - Interferometer KW - Strain sensing KW - Temperature sensing PY - 2017 AN - OPUS4-39864 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Isleyen, A. T1 - Matrix reference materials for environmental analysis N2 - Reliable analysis of chemical indicators in water, sediment and soil samples for the purpose of environmental pollution assessment poses one of the greatest analytical challenges, having in mind the complexity of sample matrix and low concentrations of pollutants. Organics (pesticides, PAHs, PFOS, etc.) and heavy metals (Hg, Cd, Ni, Pb and As) represent target parameters. Laboratories performing sampling and tests in this field regulated by respective EU directives, need strong support in order to establish a quality system. It is necessary to provide appropriate calibrators i.e. matrix CRMs relates to the unique sample matrices representing typical samples in the geomorphological and anthropological sense. In addition to that, bearing in mind the complexity and instability of environmental samples, it is very difficult to obtain appropriate referents materials with no local providers. Our project is aiming to develop capacity to produce CRMs for environmental analysis by transferring the theoretical and practical know-how between the partners and combining their skills to focus on environmental CRM production in accordance with ISO Guide 34. Our project will have an impact on environmental monitoring in the partnering countries and on the scientific community, who will use the newly developed reference materials. Furthermore, partners will develop strategies for producing new CRMs either on their own or in cooperation. This will lead to regional CRM producers serving scientific and official laboratories. T2 - 2nd International Congress of Chemists and Chemical Engineers of Bosnia and Herzegovina CY - Sarajevo, Bosnia and Herzegovina DA - 21.10.2016 KW - CRM KW - Environmental analysis KW - Quality system PY - 2016 AN - OPUS4-40028 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blankenhagel, Paul T1 - Prediction of organic peroxide fireball characteristics using CFD simulation N2 - Organic peroxides (OP) are thermally unstable and burn rapidly due to exothermic self-decomposition capabilities. Since fireballs can be formed under certain worst case conditions the understanding of burning phenomena and radiation characteristics need to be improved to prevent damage of humans and infrastructure. An appropriate method for real-scale Evaluation can be the use of CFD simulations with the objective of reducing time-consuming and costly outdoor experiments. T2 - 8th European Combustion Meeting 2017 CY - Dubronik, Croatia DA - 18.04.2017 KW - Organic peroxide KW - DTBP KW - Fireball KW - Steel drum KW - Simulation PY - 2017 AN - OPUS4-39991 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Luong, Thi Mai Hoa T1 - Non-destructive assessment of the actual state of stress in existing truss structures by vibration measurements N2 - Based on the state-of-the-art research and advances in dynamic testing methods in the past decades, the research project aims to develop a non-destructive methodology to determine the axial forces and real stress state in existing truss structures making use of the vibration signatures of the natural frequencies and mode shapes. Furthermore, it aims to estimate the joint rigidity of trusses as well as to design structural health monitoring schemes for the safety of existing truss-type structures. T2 - Young Engineers Colloqium 2017 (YEC2017) CY - Bochum, Germany DA - 31.03.2017 KW - Steel KW - Truss structures KW - Axial force KW - Stress state KW - Vibration behaviour KW - Dynamic test KW - Modal parameters KW - Finite element method KW - Model updating KW - Optimization technique PY - 2017 AN - OPUS4-40288 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Bärbel T1 - High-temperature stability of ceramic springs N2 - Metallic springs undergo oxidation and creep at elevated temperatures and their use is limited to temperature of about 650°C. Therefore, there is a need for stable materials which can easily withstand temperatures up to 1000°C for long periods in different atmospheres. Ceramic materials have been drawing attention due to their excellent properties. This work aimed at investigating the high-temperature stability of zirconia and alumina ceramic springs at elevated temperatures under different atmospheres (air, N2 and H2) in order to determine the limitation of use of these ceramic springs. T2 - DKG 2017 CY - Berlin, Germany DA - 20.03.2017 KW - Ceramic spring KW - High-temperature stability KW - Harsh environments KW - Spring constant PY - 2017 AN - OPUS4-40289 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bandow, Nicole T1 - Auswahl von Passivsammlermaterialien für NSO-Heterocyclen im Grundwasser N2 - NSO-Heterocyclen (NSO-H) finden sich zusammen mit polycyklischen aromatischen Kohlenwasserstoffen (PAK) überwiegend an Teer- und Teeröl kontaminierten Standorten im Boden und Grundwasser. NSO-H sind ähnlich toxisch wie PAK, aber polarer und damit hydrophiler. Da NSO-H an kontaminierten Standorten lediglich einen geringen Anteil des Schadstoffinventars ausmachen, wurde ihnen in der Vergangenheit wenig Aufmerksamkeit zuteil und sie werden im Gegensatz zu PAK nicht routinemäßig erfasst. Aufgrund ihrer teilweise ausgeprägten Persistenz und der vergleichsweisen guten Wasserlöslichkeit bilden sie trotz der eher geringen Anfangskonzentrationen große Schadstofffahnen mit geringen Konzentrationen aus. Mikrobielle Abbauprozesse bewirken dabei im Verlauf der Fahne Veränderungen der Anteile der Einzelsubstanzen zueinander. In der Nähe des Schadensherdes dominieren meist PAK, im Abstrom sinkt deren Konzentration allerdings schneller, so dass hier die NSO-H die dominierende Schadstoffgruppe darstellen. Auf Grund des unterschiedlichen Abbauverhaltens kann die NSO-HBelastung über den PAK Summenparameter nicht zuverlässig bestimmt werden. T2 - Innovationstag Mittelstand 2017 CY - Berlin, Germany DA - 18.05.2017 KW - Passivsammler KW - Adsorbentien KW - NSO-Heterocyclen KW - Grundwasser PY - 2017 AN - OPUS4-40294 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stajanca, Pavol T1 - Towards on-line radiation monitoring with perfluorinated polymer optical fibers N2 - Over the last decades, ionizing radiation has been gaining importance in various fields outside the nuclear industry. Among available dosimetry techniques, optical fiber‑based dosimeters (OFDs) offer numerous advantages such as electromagnetic immunity, small dimensions and possibility of remote and real time monitoring. Monitoring of radiation‑induced attenuation (RIA) of the fiber is one of the most straightforward OFD techniques. Compared to silica fibers, large‑diameter multi-mode (MM) polymer optical fibers (POFs) are easy to handle, allow for more economical connectorization and have better biocompatibility. Therefore they may yield cheaper, user-friendlier monitoring systems. In this work, feasibility of RIA-based radiation monitoring with highly sensitive perfluorinated (PF) POFs has been investigated. T2 - 25th International Conference on Optical Fiber Sensors CY - Jeju, Republic of Korea DA - 24.04.2017 KW - Radiation monitoring KW - Perfluorinated polymer optical fibers KW - Cytop KW - Distributed radiation detection PY - 2017 AN - OPUS4-40324 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Mathias T1 - Schmiedestahl als neuer Behälterwerkstoff zur Endlagerung von schwach- und mittelradioaktiven Abfällen für das Endlager Konrad N2 - Durch den Betrieb und den fortschreitenden Rückbau der in Deutschland stationierten Kernkraftwerke und kerntechnischen Anlagen, steigt auf Seiten der Industrie sowie Energieversorgungsunternehmen der Bedarf nach geeigneten Abfallbehältern zur Konditionierung und Entsorgung anfallender schwach- und mittelradioaktiver Abfälle mit vernachlässigbarer Wärmeentwicklung. Deutlich spürbar ist hierbei der Impuls der Hersteller auch Abfallbehälter aus anderen als den bislang verwendeten Werkstoffen wie z. B. Beton, Gusswerkstoff oder Stahlblech zu fertigen. Dabei besteht insbesondere das Interesse an der Herstellung von Konrad-Endlagerbehältern aus Schmiedestahl. Die Verwendung von Schmiedestahl als Behälterwerkstoff ist bereits bei Transport- und Zwischenlagerbehältern für hochradioaktive Abfälle etabliert. Das Material bietet auch für Konrad-Endlagerbehälter aufgrund seiner günstigen Festigkeits- und Zähigkeitseigenschaften in Anbetracht der erhöhten Anforderungen an die Barriereeigenschaften von störfallfesten Behältern der Abfallbehälterklasse II gewisse Vorteile. Denn für Behälter der Abfallbehälterklasse II müssen gemäß Endlagerungsbedingungen und Produktkontrolle über die Abfallbehälterklasse I hinaus zusätzliche Kriterien an die Behälterauslegung zur Erhaltung der Integrität erfüllt werden. Ebenfalls müssen erhöhte Dichtheitskriterien zur Einhaltung zulässiger Radionuklidfreisetzungen während und nach einem mechanischen oder thermischen Störfallszenario eingehalten werden. Die größten Herausforderungen zur Qualifizierung von Schmiedestahlbehältern liegen in der Bewertung der Nachweiskonzepte zur Ermittlung der abdeckenden Fallorientierung und Prüfmusterkonfiguration für den geforderten Fallversuch aus 5 m Höhe. Hierbei ist gemäß Produktkontrolle das Prüfmuster so auszuwählen und zu fertigen, dass es einschließlich seines simulierten Inhalts für die Serienfertigung repräsentativ ist und bei der Fallprüfung der größtmögliche Schaden bezüglich maximaler Kräfte, maximaler Spannungen und maximaler Verformungen erzielt wird. Eine weitere wesentliche Herausforderung ist die Eignungsprüfung des vom Antragsteller ausgewählten konservativ abdeckenden Inventars für die einstündige Brandprüfung bei 800°C, welche die Gesamtheit der kritischen Eigenschaften der für die Serienbehälter vorgesehenen Inhalte, insbesondere Ionenaustauscherharze und Verdampferkonzentrate sowie deren Auswirkung auf die Wärmeverteilung, das Pyrolyseverhalten und den Druckaufbau im Behälter berücksichtigt. Diese Prüfung hat das Ziel, die Erfüllung der Dichtheitskriterien nach einem simulierten thermischen Störfall nachzuweisen. Bis auf einige Ausnahmen existieren in den Endlagerungsbedingungen und Produktkontrolle keine spezifischen Anforderungen an Behälterwerkstoffe. Grundsätzlich dürfen Behälter aus Werkstoffen hergestellt werden, die einzeln und in Ihrer Gesamtheit nachweislich für den Einsatzzweck der Behälter geeignet sind. Diese Anforderungen sind in der Regel dann erfüllt, wenn die verwendeten Schmiedestähle nach allgemein anerkannten Regeln der Technik hergestellt, gefügt und geprüft werden und im Rahmen der Bauartprüfung der Behälter ihre Eignung nachgewiesen werden. Neben den bisher explizit genannten Behälterwerkstoffen Beton, Guss(eisen) und Stahlblech hat das Bundesamt für Strahlenschutz (BfS) auch in Zusammenarbeit mit der BAM Schmiedestahl zusätzlich in die neue Revision der Endlagerungsbedingungen aufgenommen. Hierdurch wird jetzt neu die Option eröffnet ohne gesonderte Zustimmung des BfS, Anträge auf Zulassung von Schmiedestahlbehältern für das Endlager Konrad zu stellen. Hierbei stehen grundsätzlich alle über die Behältergrundtypen in spezifizierten Formen und Abmessungen zur Disposition. Mit diesem Beitrag berichtet die BAM über die aktuellen nationalen und internationalen Bestrebungen Schmiedestahl als Behälterwerkstoff für die Lagerung von mittelradioaktiven Abfällen zu etablieren. Dabei wird auch auf die Besonderheiten eingegangen, denen sich Antragsteller bei der Qualifizierung von derartigen Behältern in der Abfallbehälterklasse II unter Berücksichtigung der in und genannten Anforderungen zu stellen haben. T2 - Kontec 2017 CY - Dresden, Germany DA - 22.03.2017 KW - Schmiedestahl KW - Behälterwerkstoff KW - Endlagerung KW - Abfälle KW - Konrad PY - 2017 AN - OPUS4-40343 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Czarnecki, Sebastian T1 - Synthesis of hybrid inorganic/organic homopolymers via ATRP and RAFT: A practical comparison N2 - The synthesis of hybrid inorganic/organic copolymers, using reversible deactivation radical polymerization (RDRP) techniques, has been an intensively studied research topic over recent years. A plethora of hybrid inorganic/organic copolymers were synthesized, including hybrid inorganic/organic block copolymers as well as random copolymers,[1–4] that showed great potential in fabricating hybrid (nano)materials with tailored properties [5]. Two widely employed RDRP techniques to prepare such hybrid inorganic/organic copolymers are atom transfer radical polymerization (ATRP) [1,2] and reversible addition-fragmentation chain transfer (RAFT) polymerization [3,4]. In order, to afford hybrid inorganic/organic copolymers with narrow dispersity, high conversions and precise structures, it is required to choose proper reaction conditions. Due to the importance of both ATRP and RAFT in the preparation of such hybrid polymers, we aim to compare both RDRP techniques by preparing 2-acetoxyethyl methacrylate (AcEMA) and 3-(triethoxysilyl)propyl methacrylate (TESPMA) based homopolymers. For this purpose, AcEMA and TESPMA were polymerized in 1,4-dioxane at 60 °C mediated by CuBr/N,N,N',N'-pentamethyldiethylenetriamine (PMDETA) and 2-(2-carboxylethylsulfanylthiocarbonyl-sufanyl) propionic acid (TTC) as well as cumyl dithiobenzoate (CDB) to evaluate the suitability and reliability of ATRP and RAFT to prepare such hybrid (co)polymers. T2 - Berlin Chemie Symposium 2017 CY - TU Berlin, Berlin, Germany DA - 06.04.2017 KW - Hybrid inorganic/organic copolymers KW - ATRP KW - RAFT PY - 2017 UR - https://bcs.jcf-berlin.de/BCS2017/BoA2017.pdf AN - OPUS4-40280 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kotschate, Daniel T1 - Hochauflösende Reinheitsgradbestimmung – Fertigung von Referenzfehlern N2 - Regelwerke zur zerstörungsfreien Bestimmung des Reinheitsgrades wie das SEP 1927 und die ASTM E588 erreichen ihre Vergleichbarkeit unter Anwendung von - vergleichsweise einfachen - Referenzfehlern. Hinsichtlich Realisierbarkeit wird somit der Kompromiss zwischen Herstellung des Referenzfehlers und der erreichbaren Nachweisgrenze gefunden. Zur Weiterentwicklung über die Grenzen der SEP1927 hinaus, wurde der Versuch unternommen Fehler kleiner 500 μm herzustellen - welche aufgrund der geringen geometrischen Ausdehnung fertigungsbedingt schwierig zu realisieren sind. Bei den vergleichenden Untersuchungen kristallisierten sich zwei Fertigungsverfahren, Funkenerosion (EDM: electrical discharge maching) und die Fertigung der Bohrungen unter Verwendung eines Hochleistungslasers, als vielversprechend heraus. Zunächst wurden die Fehler mit beiden Verfahren in unterschiedlichen Größen (100, 250 und 100 μm) und Tiefen (1, 1,5 und 2 mm) unter Anwendung von computertomographischen Verfahren der Röntgenprüfung, die Geometrie der eingebrachten Fehlstellen und anschließend durch hochauflösende Tauchtechnikmessungen das Reflektionsverhalten charakterisiert. T2 - DGZfP Jahrestagung CY - Koblenz, Germany DA - 22.05.2017 KW - Materialcharakterisierung KW - Reinheitsgradbestimmung KW - Ultraschalltauchtechnik PY - 2017 AN - OPUS4-40353 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Woydt, Mathias T1 - Potentials of niobium carbide (NbC) as cutting tools and for wear protection N2 - Niobium is today largely available. NbC grades displayed lower dry sliding friction over WC grades. The softer Ni- and NiMo-bondes NbC1.0-grades have a higher abrasive wear resistance (ASTM G65), even with lower toughnesses, as the tougher WC-Co grades. T2 - 19. Plansee Seminar CY - Reutte, Austria DA - 29.05.2017 KW - Niobium carbide (NbC) KW - Cutting tools KW - Hardness PY - 2017 AN - OPUS4-40512 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf T1 - Colloidal processing of metal bonded niobium carbide (NbC-Ni) N2 - The manufacturing of NbC with Ni binder with addition of titanium carbide by using a colloidal process for blending the different powders without a milling step were investigated. The the sintering process and formation of the resulting microstructures, the phase relations and the hardness of the produced cermet materials are characterized. T2 - 19. Plansee Seminar CY - Reutte, Austria DA - 29.05.2017 KW - Niobium carbide (NbC) KW - Cermets KW - Hardness PY - 2017 AN - OPUS4-40513 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Bridge Monitoring by Passive Seismic Data, First tests at the BLEIB reference structure N2 - Seismic wave velocities are related to elastic moduli and other properties and can serve as indicators for changes in the material. They are conventionally determined by active measurements. Using ideas from seismic interferometry determination from stacked cross-correlations of registrations of man-made and natural noise (“passive seimics“) is an effective alternative, as these data might be available from vibration monitoring anyway. The validity of this approach is demonstrated by a simple experiment based on recordings of man made noise using accelerometers at the reference structure. The s-wave (or more probable. guided wave) velocity was determined to be 2100 m/s in both active and passive experiments. T2 - Passive Imaging and monitoring in wave physics: from seismology to ultrasound CY - Cargese, France DA - 05.06.2017 KW - Bridge monitoring KW - Passive seismics KW - Ambient noise KW - Interferometry KW - Elastic wave velocity PY - 2017 AN - OPUS4-40577 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bennetts, V.H. A1 - Neumann, Patrick P. T1 - Probabilistic air flow modelling using turbulent and laminar characteristics for ground and aerial robots N2 - For mobile robots that operate in complex, uncontrolled environments, estimating air flow models can be of great importance. Aerial robots use air flow models to plan optimal navigation paths and to avoid turbulence-ridden areas. Search and rescue platforms use air flow models to infer the location of gas leaks. Environmental monitoring robots enrich pollution distribution maps by integrating the information conveyed by an air flow model. In this paper, we present an air flow modelling algorithm that uses wind data collected at a sparse number of locations to estimate joint probability distributions over wind speed and direction at given query locations. The algorithm uses a novel extrapolation approach that models the air flow as a linear combination of laminar and turbulent components. We evaluated the prediction capabilities of our algorithm with data collected with an aerial robot during several exploration runs. The results show that our algorithm has a high degree of stability with respect to parameter selection while outperforming conventional extrapolation approaches. In addition, we applied our proposed approach in an industrial application, where the characterization of a ventilation system is supported by a ground mobile robot. We compared multiple air flow maps recorded over several months by estimating stability maps using the Kullback-Leibler divergence between the distributions. The results show that, despite local differences, similar air flow patterns prevail over time. Moreover, we corroborated the validity of our results with knowledge from human experts. T2 - IEEE International Conference on Robotics and Automation (ICRA) CY - Singapore DA - 29.05.2017 KW - Mapping KW - Field robots KW - Environment monitoring and management KW - Aerial systems KW - Perception and autonomy PY - 2017 AN - OPUS4-40549 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esteban-Fernandez, Diego A1 - Traub, Heike A1 - Hutchinson, R. T1 - High resolution laser ablation NWRimage system for single cell imaging N2 - The traceability and availability of nanoparticles enables their use to enhance a variety of nano-biological and nano-medicinal applications. The particular size and shape of nanoparticles determine the uptake rate and pathway into the cell, and therefore impact specific cell components and processes. Selecting specific particle types allows researchers to target the process or structure of interest, with minimal additional impact. This can be used for drug or DNA delivery, and is being explored for use in oncology. Understanding the different uptake mechanisms and impacted processes requires sub-cellular Imaging resolution to determine, for example, whether or not the nanoparticles are reaching the nucleus. Sub-cellular imaging has traditionally been challenging to achieve with laser ablation ICP-MS due to a lack of sensitivity at small spots. Bioimaging using LA-ICP-MS is a well-established technique, but usually applied on the tissue scale, which depends on larger spot areas where sensitivity is less problematic. The improved sensitivity and washout from the NWRimage has allowed faster imaging of smaller spots. The NWRimage also provides the possibility of true sub-micron spot sizes. This work compares the capabilities of standard laser Ablation (NWR213 system) with results from the NWRimage platform, which has been optimized for imaging applications. T2 - European Winter Conference on Plasma Spectrochemistry CY - St. Anton, Austria DA - 19.02.2017 KW - Laser ablation KW - Imaging KW - Nanoparticle PY - 2017 AN - OPUS4-39281 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Quantitative NMR spectroscopy for gas metrology – applications in liquefied petroleum gases N2 - The field of gas metrology is dealing with the development and improvement of gas analytical methods, as well as production of highly accurate primary reference standards. These are prepared at national metrological institutes (NMI) and represent the highest national level of traceability. Used for certification of secondary standards provided by specialty gas distributors these are very important for a high number of industrial sectors, which have to proof traceability due to legal or regulatory affairs, e.g., natural gas suppliers. Thus, improvements in the production and certification of these mixtures will have a direct influence on gas industry. Due to its direct correlation to the number of spins within active sample volume quantitative NMR spectroscopy (qNMR) is a highly promising method with absolute comparison abilities in complex systems. Especially for liquefied petroleum gases (LPG) it has the ability of studying the unmodified sample at same conditions like in the cylinder. In contrast to gas chromatography no preparation steps and no changes like evaporation of the sample are necessary. In this work we show the most recent results of our investigations on highly accurate LPG mixtures provided in constant-pressure piston cylinders. A dynamic pressure-resistant setup allows for sampling and circulation of the samples to ensure a homogeneous withdrawal from the cylinder. This is presented on examples of a commercial multicomponent LPG mixture obtained from specialty gas distributor, as well as two cylinders from the key comparison CCQM-K119 at highest level of international metrology. T2 - 5th Panic - Practical Applications of NMR in Industry Conferece CY - Hilton Head Island, SC 29928, USA DA - 20.02.2017 KW - Quantitative NMR spectroscopy KW - Gas metrology KW - Liquefied petroleum gas PY - 2017 AN - OPUS4-39234 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, B. T1 - Detection of aluminum nanoparticles in biological media and in vitro N2 - Aluminum is the third most abundant element in the earth crust and therefore ubiquitously detectable in the environment. Mostly found in the form of derivatives such as silicates or oxides, it also occurs as metallic aluminum for example as colorant in sweets or in aluminum foil. With regard to potential toxicological effects, the different solubility of metallic aluminum nanoparticles compared to Al2O3 is of high relevance. Formation of ions may facilitate the crossing of blood-tissue barriers. Distribution towards other organs and subsequent re-formation of particulate aluminum due to milieu changes might occur. Therefore, the determination of solubility is required for proper risk assessment. Inductively coupled plasma mass spectrometry (ICP-MS) allows determination of aluminum with a detection limit of about 6 ppb. It could be proven that dissolution and solubility of metallic aluminum is significantly different when compared to Al2O3. Using ICP-MS in the single particle mode, a significant change in the behavior of both aluminum species was detected after undergoing the artificial digestion. Nearly unchanged in the saliva, particles show dissolution and high agglomeration during the gastric state before deagglomerating again in the intestine. Further analysis by time-of-flight secondary ion mass spectrometry (ToF-SIMS) revealed the uptake of both aluminum forms by proliferating and differentiated Caco-2 cells. For both particle forms different ions could be detected. Several aluminum-amino acid complex-derived ions from serine and valine were identified. In the case of Al2O3, Al2O2+, AlOH+, AlH2O+ and Al[(H2O)6]3+ were the main ions found co-localizing within treated cells. T2 - European Winter Conference for Plasma Spectrochemistry 2017 CY - Sankt Anton, Austria DA - 19.02.2017 KW - Aluminum KW - SP-ICP-MS KW - SAXS KW - Artificial digestion KW - Cellular uptake PY - 2017 AN - OPUS4-39201 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Léonard, Fabien T1 - CT for additive manufacturing process characterisation: assessment of melt strategies on defect population N2 - Selective Electron Beam Melting (SEBM) is a promising powder bed Additive Manufacturing (AM) technique for near net-shape manufacturing of high-value titanium components. However, as with every emerging technique, the manufacturing processes can still be greatly improved and optimised. In particular, the links between AM settings and the resulting sample porosity is of great interest, as the fatigue life of SEBM parts is currently dominated by the presence of porosity. In this study, the size, volume fraction, and spatial distribution of the pores in model samples have been characterised in 3D, using X-ray Computed Tomography (CT), and correlated to the SEBM process variables. A strong relationship was found with the different beam strategies used to contour, and infill by hatching, a part section. The majority of pores were found to be small spherical gas pores, concentrated in the infill hatched region. Rarer irregular shaped pores were mostly located in the contour region and have been attributed to a lack of fusion between powder particles. T2 - Conference on Industrial Computed Tomography iCT2016 CY - Wels, Austria DA - 09.02.2016 KW - Titanium KW - Additive Manufacture KW - Selective Electron Beam Melting KW - Pores KW - Defects KW - X-ray Computed Tomography PY - 2016 AN - OPUS4-39186 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas T1 - High speed ultrasonic axle inspection using a phased array with an electronically rotated beam N2 - The ultrasonic testing of the railway axes with a hollow drilling can be realized from the inside of the drill hole without demounting the axes and without dismantling the wheels and the brake discs. Flaws in the outer surface of the hollow shafts, whose orientation lies in the radial-radial plane have to be detected. Common testing systems use scanning in the circumferential direction by mechanical rotation of the probe system in the drilling. The presented phased array probe system carries out the rotation scan by electronically steering of the sound field only. Thereby manipulation of the probe inside the drilling becomes more simple and the inspection time can be shortened significantly. The beam will additionally be focused in the plane vertical to the specimen axis to optimize sound field parameters to different axle geometries. T2 - ESIS TC24 workshop CY - Leoben, Austria DA - 24.10.2016 KW - NDT KW - Ultrasound KW - Railway KW - Phased array PY - 2016 AN - OPUS4-39187 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kabelitz, Anke T1 - Time resolved WAXS studies on the crystallization of Al13 keggin clusters N2 - We report on the in situ investigation of the Al13 sulfate synthesis by WAXS. Al13 sulfates were crystallized by precipitating hydrolyzed aluminum solutions by the addition of sodium sulfate. The measurements were performed using an acoustic levitator. The study provides information about the intermediates during the crystallization process. T2 - Eighth Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 07.12.2016 KW - In situ KW - Crystallization KW - WAXS PY - 2016 AN - OPUS4-39365 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kabelitz, Anke T1 - A02: Time-resolved WAXS studies on the crystallization of Al13 keggin clusters N2 - Polynuclear aluminium species (Al13 keggin cluster) find application in different areas like water purification, contaminant transport, and as pilling clays with high specific surface areas, due to their strong binding ability to aggregates and high positive charge. In the present contribution, we report on the in situ investigation of the Al13 sulfate synthesis by synchrotron wide-angle X-ray scattering (WAXS). Al13 cluster were crystallized by precipitating hydrolyzed aluminum solutions by the addition of sodium sulfate. The measurements were performed using a custom-made acoustic levitator as sample holder. The study provides information about the intermediates during the crystallization process. From the data, a mechanism was derived indicating the influence of the crystallization process. T2 - International Symposium of the CRC 1109 CY - Berlin, Germany DA - 19.02.2017 KW - WAXS KW - In situ KW - Crystallization PY - 2017 AN - OPUS4-39367 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bierstedt, Andreas T1 - Improving the performance of the laser-spark ion source for the detection of volatile organic compounds under ambient conditions N2 - Recently, a novel ionization scheme for ambient MS has been introduced. It is based on a quasi-continuous laser induced plasma (LIP), ignited in front of the MS inlet. This setup comprises the advantages of an ambient probe, electro neutrality, a sufficient duty cycle, a ubiquitous plasma medium, low power consumption, the absence of solvents and high sensitivity. To assess its future applicability for the detection of volatile organic compounds, plasma properties and operating conditions are investigated to understand the processes, that lead to the unexpected formation of intact molecular ions. Comprehensive studies include optical Emission spectroscopy, shadowgraphic shockwave visualization and time-of-flight mass spectrometry. T2 - 50. Jahrestagung der Deutschen Gesellschaft für Massenspektrometrie CY - Kiel, Germany DA - 05.03.2017 KW - Laser-spark KW - Laser induced plasma KW - Mass spectrometry KW - Ambient ionization PY - 2017 AN - OPUS4-39309 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Online spectroscopy in micellar systems – A process analytical approach for a hydroformylation mini-plant N2 - Within the Collaborative Research Center InPROMPT a novel process concept for the hydroformylation of long-chained olefins is studied in a mini-plant, using a rhodium complex as catalyst in the presence of syngas. Recently, the hydroformylation in micro¬emulsions, which allows for the efficient recycling of the expensive rhodium catalyst, was found to be feasible. However, the high sensitivity of this multi-phase system with regard to changes in temperature and composition demands a continuous observation of the reaction to achieve a reliable and economic plant operation. For that purpose, we tested the potential of both online NMR and Raman spectroscopy for process control. The lab-scale experiments were supported by off-line GC-analysis as a reference method. A fiber optic coupled probe of a process Raman spectrometer was directly integrated into the reactor. 25 mixtures with varying concentrations of olefin (1-dodecene), product (n-tridecanal), water, n-dodecane, and technical surfactant (Marlipal 24/70) were prepared according to a D-optimal design. Online NMR spectroscopy was implemented by using a flow probe equipped with 1/16” PFA tubing serving as a flow cell. This was hyphenated to the reactor within a thermostated bypass to maintain process conditions in the transfer lines. Partial least squares regression (PLSR) models were established based on the initial spectra after activation of the reaction with syngas for the prediction of unknown concentrations of 1-dodecene and n-tridecanal over the course of the reaction in the lab-scale system. The obtained Raman spectra do not only contain information on the chemical composition but are further affected by the emulsion properties of the mixtures, which depend on the phase state and the type of micelles. Based on the spectral signature of both Raman and NMR spectra, it could be deduced that especially in reaction mixtures with high 1-dodecene content the formation of isomers as a competitive reaction was dominating. Similar trends were also observed during some of the process runs in the mini-plant. The multivariate calibration allowed for the estimation of reactants and products of the hydroformylation reaction in both laboratory setup and mini-plant. T2 - 11. Doktorandenseminar 2017 des Arbeitskreis Prozessanalytik der GDCh und DECHEMA CY - Berlin, Germany DA - 12.03.2017 KW - Online reaction monitoring PY - 2017 AN - OPUS4-39398 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Ben T1 - Aging of composite pressure cylinder (COD-AGE) N2 - Subject, Aim and methods within the Project COD-AGE. Test methods and condition monitoring for Composite-cylinders T2 - Follow-up Workshop on statistical safety assessment CY - Berlin, Germany DA - 05.10.2016 KW - Aging KW - Composite cylinder KW - Non destructive testing PY - 2016 AN - OPUS4-39087 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - John, Sebastian T1 - Lebensdauerabschätzung von Composite-Druckgefäßen / COD-AGE N2 - Ermittlung von Kennwerten und Modelbildung zur Lebensdauerabschätzung von Composite-Druckgefäßen. T2 - 3. Workshop Themenfeld Material CY - Berlin, Germany DA - 12.10.2016 KW - Composite-Druckgefäße KW - Lebensdauer KW - FEM KW - Bruchmechanik PY - 2016 AN - OPUS4-39090 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank T1 - Fire testing of pressurized vessels N2 - The vessel wall response shows a good agreement between the numerical predictions of and experimental data using the limit load approach. Further work is continuing to understand the thermohydraulic response and the boundary conditions for material modelling. As shown in figure 2 there was one BLEVE of a bare tank containing a PRV, highlighting the risk of serious consequences if models are inaccurate. The behavior of partly coated tanks were similar to the bare tank. T2 - ICPPE 2017 CY - Bangkok, Thailand DA - 21.01.2017 KW - Pressurized vessels KW - Fire testing PY - 2017 AN - OPUS4-39048 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schröder, Volkmar T1 - Sicherheitstechnische Kenngrößen für Biogase N2 - Im Poster wird die Ermittlung sicherheitstechnischer Kenngrößen für Biogase mit Hilfe von Dreistoff-Diagrammen dargestellt. Insbesondere wird die Berechnung der unteren und oberen Explosionsgrenzen (UEG, OEG) und die Ermittlung der Sauerstoffgrenzkonzentration (LOC)beschrieben. T2 - Biogas Infotage 2017 CY - Ulm, Germany DA - 18.01.2017 KW - Biogas KW - Explosionsschutz KW - Explosionsgrenzen KW - Sauerstoffgrenzkonzentration KW - Explosionsdiagramme PY - 2017 AN - OPUS4-39063 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schröder, Volkmar T1 - Explosionsschutz für Biogas-Wasserstoff-Gemische N2 - Bei neueren Verfahren zur Biogasgewinnung wird zusätzlich Wasserstoff in den Fermenter eingespeist, um den Methananteil im Biogas zu erhöhen. Dieses Verfahren bewirkt neben der CO2-Vermeidung eine Erhöhung des Brennwerts und der Qualität des Biogases. Zudem kann dafür, ähnlich wie bei der Einspeisung von Wasserstoff in das Erdgasnetz, Elektrolysewasserstoff aus Überschüssen von Wind- und Solarstrom verwendet werden (Power-to-Gas). Im Poster werden die sicherheitstechnischen Kenngrößen für den Explosionsschutz bei Prozessgasen dargestellt und diskutiert. T2 - Biogas Infotage 2017 CY - Ulm, Germany DA - 18.01.2017 KW - Biogas-Wasserstoff-Gemische KW - Explosionsschutz KW - Sicherheitstechnische Kenngrößen KW - Explosionsgrenzen KW - Explosionsdrücke KW - Normspaltweite PY - 2017 AN - OPUS4-39064 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schröder, Volkmar T1 - Kenngrößen für Gase im Explosionsschutz N2 - Im Poster werden die wichtigsten sicherheitstechnischen Kenngrößen von Gasen für den Explosionsschutz dargestellt. Es wird gezeigt, wie mit Hilfe von Dreistoff-Diagrammen (Explosionsdiagrammen) die Explosionsgrenzen, die Entzündbarkeit und die Sauerstoffgrenzkonzentration von Gemischen aus Brenn- und Inertgasen bestimmt werden. Weiterhin wird eine Zuordnung der Kenngrößen zu den gebräuchlichen Schutzmaßnahmen vorgenommen. T2 - Biogas Infotage 2017 CY - Ulm, Germany DA - 18.01.2017 KW - Explosionsschutz KW - Sicherheitstechnische Kenngrößen KW - Biogas KW - Explosionsgrenzen KW - Explosionsdruck KW - Normspaltweite KW - Explosionsgruppen PY - 2017 AN - OPUS4-39065 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Streeck, C. T1 - A liquid cell for the analysis of biomolecules (e.g. proteins, chlorophyll) using soft X-ray excitation N2 - For versatile applications, including vacuum instrumentation, a liquid cell was developed. Using ultra-thin windows, this cell enables X-ray Absorption spectrometry in the soft X-ray range which is in particular interesting for the analysis of organic molecules in liquids or at the solid-liquid interface. NEXAFS of a protein at N K-edge and of chlorophyll a at Mg K-edge is demonstrated. T2 - 8th Jouint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 7.12.2016 KW - XAS KW - NEXAFS KW - Liquid cell KW - Chlorophyll PY - 2016 AN - OPUS4-38711 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maack, Stefan T1 - Elastic wave propagation of ultrasound in bituminous road surfaces – simulations and measurements N2 - Maintenance costs of road infrastructure are increasing steadily. Adverse environmental impacts on infrastructure get more and more important as well. Therefore, it is important to determine how limited financial resources can be directed with an optimum pay-out. The present study takes first steps towards the usage of low-frequency ultrasound as a tool to evaluate the road condition. T2 - International Symposium Non-Destructive Testing in Civil Engineering 2015 CY - Berlin, Germany DA - 15.09.2015 KW - Wave propagation KW - Ultrasonic KW - NDT KW - Simulation PY - 2015 AN - OPUS4-38837 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - REFUND: Untersuchung von Bestandsfundamenten und Entscheidungsbäume zur optimierten Weiter- und Nachnutzung N2 - Vor einer geplanten Weiter- oder Wiedernutzung von Bestandsfundamenten stellt sich die Frage nach deren Lage, Geometrie und Zustand im Untergrund. Hierfür gibt es verschiedene Prüfverfahren. Im Projekt REFUND (2014-2016) wurden unter Berücksichtigung der aktuellen Normen und des Standes der Technik Ablaufdiagramme für die Planung der Wiedernutzung und die Untersuchung des Bestandes entwickelt. Dies geschah getrennt für Einzel- und Streifenfundamente, Platten und Pfähle. An zwei Praxisbeispielen wurden die Abläufe getestet und optimiert. Die Ergebnisse wurden in einem Handbuch kompiliert, das bei der TU Darmstadt erscheint. T2 - 24. Darmstädter Geotechnik-Kolloquium CY - Darmstadt, Germany DA - 16.03.2017 KW - Fundamente KW - Wiedernutzung KW - Ablaufdiagramme KW - Planung KW - Prüfung PY - 2017 AN - OPUS4-39429 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertin, Annabelle T1 - Temperature Sensitive Aggregation Behavior of Poly(Acrylamide-co-Acrylonitrile) in Water N2 - Thermoresponsive polymers have shown great potential in applications such as bioseparation, drug delivery and diagnostic. Only few thermoresponsive polymers that present an upper critical solution temperature (UCST), i.e. phase separate from solution upon cooling, in a relevant temperature range have been reported so far. Herein, a robust UCST-type copolymer of acrylamide (AAm) and acrylonitrile (AN) (poly(AAm-co-AN)) was prepared by reversible addition fragmentation chain transfer (RAFT) polymerization and its thermo-induced aggregation behavior in aqueous media was studied. We propose a model for the temperature-induced aggregation behaviour of UCST-type poly(AAm-co-AN) copolymer in aqueous solution on the basis of turbidity measurements, SLS, DLS, SANS and cryo-TEM. T2 - German Physical Society - Spring Meeting 2017 CY - Dresden, Germany DA - 19.03.2017 KW - Thermoresponsive polymers KW - UCST-type copolymer PY - 2017 AN - OPUS4-39465 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertin, Annabelle T1 - Functional polymer based on 2,6-diaminopyridine with tunable UCST behaviour in water/alcohol mixture N2 - Thermoresponsive polymers are of great importance in numerous applications such as bioseparation, drug delivery, diagnostic and microfluidic applications. Only few thermoresponsive polymers that present an upper critical solution temperature (UCST), i.e. phase separate from solution upon cooling, in a relevant temperature range and green solvents such as water or ethanol have been reported. Indeed, polymers with UCST behavior below 60°C in alcohol or water/alcohol mixtures are extremely promising for the preparation of smart materials for sensing. In this work two novel functional polymers of based on a 2,6-diaminopyridine motif were synthesized by free radical polymerization. Their UCST-type transition temperature is tunable by varying either their concentration in solution or the type of solvent. Insights into this phenomenon will be given based on turbidimetry and temperature dependent dynamic light scattering T2 - German Physical Society - Spring Meeting 2017 CY - Dresden, Germany DA - 19.03.2017 KW - Thermoresponsive polymers KW - USCT-type polymers KW - Polymers based on 2,6-diaminopyridine PY - 2017 AN - OPUS4-39466 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosemann, Paul T1 - Einfluss der Oberflächennachbearbeitung auf die Korrosionsbeständigkeit von Schweiß-nähten des Duplexstahls 1.4062 N2 - Die Korrosionsbeständigkeit geschweißter Konstruktionen aus nichtrostenden Duplexstählen wird von den Schweißparametern und der Nachbehandlung der Oberflächen bestimmt. Eine etablierte Methode der Schweißnahtnachbehandlung ist das Strahlen der Oberfläche mit Glasperlen. Diese Methode soll aus wirtschaftlichen Gründen durch das Strahlen mit Korund ersetzt werden, welches deutliche Zeit- und Kostenvorteile bietet. Besonders bei der Lochkorrosionsbeständigkeit hat sich das Schleifen mit Korund bereits als nachteilig erwiesen, weshalb diese Umstellung auch beim Stahlen kritisch hinterfragt wird. Daher wurden Probeschweißungen bei der Firma Modersohn hergestellt und mit verschiedenen Oberflächenbearbeitungsmethoden (Glasperlenstrahlen, Korundstrahlen, Beizen, Elektropolieren, Schleifen) nachbehandelt. Diese verschiedenen Oberflächenzustände wurden analytisch (REM, Rauheit) charakterisiert und hinsichtlich ihrer Lochkorrosionsbeständigkeit vergleichend untersucht werden, um die Eignung des Strahlens mit Korund zu beurteilen. T2 - GfKORR-Jahrestagung 'Duplex-Stähle – Nische oder Zukunft ?' CY - Frankfurt/M., Germany DA - 15.11.2016 KW - Korrosionsbeständigkeit KW - Schweißnähte KW - Duplexstahl PY - 2016 AN - OPUS4-39470 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosemann, Paul A1 - Kauss, Norman T1 - Einfluss des Schwefelgehalts auf die Korrosionsbeständigkeit des nichtrostenden Stahls 1.4404 N2 - Die Korrosionsbeständigkeit nichtrostender Stähle wird maßgeblich von ihrer chemischen Zusammensetzung bestimmt. Der tendenzielle Einfluss ist für die Hauptlegierungselemente in der wissenschaftlichen Fachliteratur beschrieben. Bei Begleitelement Schwefel gibt es dagegen keine konkreten Untersuchungen die belegen, ab welchem Gehalt mit einer Verringerung der Korrosionsbeständigkeit zu rechnen ist. Im Lichtbogenschmelzofen wurden verschiedene Legierungen mit abgestuftem Schwefelgehalten hergestellt, um den Einfluss dieses Begleitelementes auf die Korrosionsbeständigkeit systematisch zu untersuchen. Die KorroPad-Prüfung und die Bestimmung kritischer Lochkorrosionspotentiale wurden zur Charakterisierung der Legierungen genutzt. Beide Methoden belegen eine zunehmende Verringerung der Lochkorrosionsbeständigkeit mit dem Schwefelgehalt. T2 - GfKORR-Jahrestagung 'Duplex-Stähle – Nische oder Zukunft ? CY - Frankfurt/M., Germany DA - 15.11.2016 KW - Schwefelgehalt KW - Korrosionsbeständigkeit KW - Nichtrostender Stahl PY - 2016 AN - OPUS4-39472 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, C. T1 - Einfluss der Abkühlgeschwindigkeit auf die Korrosionsbeständigkeit martensitischer nichtrostender Stähle N2 - Martensitische nichtrostende Stähle werden in verschiedenen technischen Bereichen eingesetzt, bei denen eine optimale Kombination aus hoher mechanischer Festigkeit und guter korrosiver Beständigkeit gefordert wird. Beide Eigenschaften werden in der Industrie primär durch die Wärmebehandlung gesteuert. Die Korrosionseigenschaften sind dabei stark von der diffusionsbedingten Bildung und Auflösung von Chromkarbiden abhängig. In vergangenen wissenschaftlichen Arbeiten konnte nachgewiesen werden, dass die Abkühlgeschwindigkeit nach dem Austenitisieren einen großen Einfluss auf die Bildung solcher Karbide hat. Der Einfluss der Abkühlgeschwindigkeit auf die Lochkorrosionsbeständigkeit wurde an den Stählen 1.4108 und 1.4116 systematisch untersucht. Mit Hilfe des Stirnabschreckversuches wurde dabei die Abkühlgeschwindigkeiten variiert und anschließend die Veränderung von Gefüge, Lochkorrosionsbeständigkeit und Härte untersucht. Als Ergebnis konnten kritische Abkühlgeschwindigkeiten ermittelt werden, bei denen eine kritische Verringerung der Korrosionsbeständigkeit einsetzt. T2 - GfKORR-Jahrestagung 'Duplex-Stähle – Nische oder Zukunft ?' CY - Frankfurt/M., Germany DA - 15.11.2016 KW - Korrosionsbeständigkeit KW - Martensitische nichtrostende Stähle KW - Abkühlgeschwindigkeit PY - 2016 AN - OPUS4-39473 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, S. T1 - The impact of thermophilic sulphate-reducing bacteria on serpentinization reactions N2 - Serpentinization is an important process in the Earth’s oceanic lithosphere, where the reaction of olivine und pyroxene with water forms serpentine and magnetite. During this alteration reaction gaseous hydrogen is produced abiotically, which has been inferred as an essential energy source for microbes living in these systems. The serpentinization reaction directly influences the chemical composition of the lithosphere and the ocean chemistry and, thus, connects the lithosphere, hydrosphere and biosphere. While the geochemical processes are rather well studied in these systems, the biological influence on the processes is not well understood. However, microbial activity has been documented for serpentinization systems, e.g. along the Mid-Atlantic Ridge, in surficial carbonate formations constraining the activity of sulfate-reducing bacteria and methanogenic archaea. The question arises whether microbial populations can be sustained by the hydrothermal alteration of the oceanic lithosphere and whether the microbial populations directly influence and accelerate the serpentinization process. For our experimental setup the surface of mono-mineral cubes of olivine and pyroxene are directly exposed to sulfate-reducing bacteria, using an anaerobic semi-continuous fermenter system. Besides mesophilic sulfate-reducing Bacteria of the Desulfovibrio genus also thermophilic sulfate-reducing enrichment cultures from geothermal, saline fluid systems were included to investigate the mineral surface alteration. The mineral alteration was monitored using electron microprobe analysis, scanning electron microscopy and isotope fractionation of sulfide, while biofilm formation was documented and sulfate reduction activity measured. T2 - VAAM Jahrestagung CY - Würzburg, Germany DA - 05.03.2017 KW - Sulfat-reduzierende Bakterien KW - Sulfate-reducing bacteria PY - 2017 AN - OPUS4-39418 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wu, Cheng-Chieh T1 - Determination of an approximate anisotropic model for a given geometrical complex isotropic structure by means of finite element method and least-squares adjustment N2 - Many engineering structures are made of composite materials or metal foam. To simulate the deformational behaviour of these structures often requires a high number of discretisation elements. This in turn yields a very large system of linear equations that are extremely time and memory consuming or practically impossible to solve. It is therefore desirable to find an approach to overcome this obstacle. T2 - PhD Day 2016 CY - Berlin, Germany DA - 01.09.2016 KW - Least-Squares Adjustment KW - Inverse Analysis KW - Finite Element Method PY - 2016 AN - OPUS4-37521 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wu, Cheng-Chieh T1 - Approximate model for geometrical complex structures N2 - Many engineering structures are made of composite materials or metal foam. To simulate the deformational behaviour of these structures often requires a high number of discretisation elements. This in turn yields a very large system of linear equations that are extremely time and memory consuming or practically impossible to solve. It is therefore desirable to find an approach to overcome this obstacle. T2 - 33rd Danubia- Adria Symposium on Advances in Experimental Mechanics CY - Portorož, Slovenia DA - 20.09.2016 KW - Inverse analysis KW - Finite element method KW - Least-squares adjustment PY - 2016 AN - OPUS4-37523 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Madkour, Sherif T1 - Dielectric investigations on carbon nanomembranes N2 - Multilayer carbon nanomembrances (CNMs) could pave the way for a new ultrathin functional conductive coatings with tunable electrical, optical, and chemical properties. Due to their molecular thickness, they can also be regarded as “interfaces without bulk” separating regions of different gaseous, liquid, or solid components and controlling the materials exchange between them, making them optimal materials for membranes applications. Furthermore, their physical and chemical properties depend strongly on their structure, molecular composition, and the surroundings of either sides, thus allowing for tailored properties. Here, nanolayers of Aromatic p-terphenylthiol (TPT) self-assembled into 2D carbon monolayers (thickness - 1.6 nm) were synthesized and further crosslinked by ion bombardment, forming CNMs. Here, though a recently developed multilayer nanosheets routine, stacks of 5, 10, 15 and 20 TPT sheets where transferred on top of each other forming a multilayered CNMs. However, this transfer routine could introduce some intrinsic defects to the sheets, which would alter the molecular composition and / or structure, thus consequently the CNMs properties. Therefore, it is essential to characterize defects in “pure” TPT nanomembranes, before tailoring the molecular compositions, e.g. adding functional groups. For this reason, broadband dielectric spectroscopy (BDS) was utilized to characterize any defects that could be rasied during preparation. Due the structure of pure TPT membranes, no dipole moment should exsist. However, the presence of other elements, e.g. water or sulphur, would result in a dipole moment that could be probed by BDS. As a main result, for all different stacked-layer numbers, a clear relaxation process is seen, which moves to higher frequencies with increasing the temperature. The temperature dependence of the relaxation rate of this process is independent of film thickness and can be well described by a common VFT function, hence a corporative motion. This relaxation process was assigned to intrinisic defects in the membranes, introduced during preparation, which was further confimed by a detailed anaylsis of the dielectric strength. This is the first BDS measurment on TPT CNMs. T2 - 9th International Conference on Broadband Dielectric Spectroscopy and its Applications CY - Pisa, Italy DA - 11.09.2016 KW - Carbon nanomembranes PY - 2016 AN - OPUS4-37527 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krankenhagen, Rainer T1 - Punktuelle Bestimmung der tatsächlichen Energieabgabe von Blitzlampen N2 - Der Beitrag beschreibt Untersuchungen und Entwicklungsarbeiten für einen technisch einfach zu realisierenden Sensor, der die breitbandige kurzzeitige Energieabgabe von Blitzlampen punktuell bestimmen kann. Solche Lampen werden in der zerstörungsfreien Prüfung als Energiequelle für thermografische Untersuchungen genutzt. Dabei soll die zeitliche Entwicklung der Oberflächentemperatur des Sensors mit der ohnehin vorhandenen IR-Kamera aufgenommen und danach ausgewertet werden. Hierzu wurden zwei Konzepte betrachtet: thermisch dünne und thermisch dicke Proben. Der direkte Vergleich zeigt die Vorteile von thermisch dicken Proben, die in der Physik der beteiligten Wärmeausgleichsprozesse begründet sind. T2 - 18. Fachtagung Sensoren und Messsysteme 2016 CY - Nürnberg, Germany DA - 10.05.2016 KW - Blitz-Thermografie KW - Zerstörungsrfreie Prüfung KW - Blitzlampen KW - Energieabgabe KW - Energiesensor PY - 2016 AN - OPUS4-37531 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hüllmann, Dino T1 - Embedded Control of a PMSM Servo Drive without Current Measurements N2 - A permanent-magnet synchronous motor (PMSM) is controlled using measurements from a digital, optical incremental encoder. The motor speed is also estimated from these measurements. The performance of this control structure is shown. T2 - Eurosensors 2016 CY - Budapest, Hungary DA - 04.09.2016 KW - BLDC KW - PMSM KW - Motor control KW - Servo drive KW - Incremental encoder speed estimation PY - 2016 AN - OPUS4-37536 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hüllmann, Dino T1 - Current-independent Torque Control of PMSM Servo Drives N2 - A permanent-magnet synchronous motor (PMSM) is controlled using measurements from a digital, optical incremental encoder. The motor speed is estimated from these measurement. Basic performance results are presented. T2 - 33rd Danubia Adria Symposium on Advances in Experimental Mechanics CY - Portorož, Slovenia DA - 20.09.2016 KW - BLDC KW - PMSM KW - Motor control KW - Servo drive PY - 2016 AN - OPUS4-37538 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Lateral resolution delivered by imaging surface-analytical instruments as SIMS, AES and XPS: Application of the BAM-L200 Certified Reference Material and related ISO Standards N2 - The certified reference material BAM-L200, a nanoscale stripe pattern for length calibration and specification of lateral resolution, is described. BAM-L200 is prepared from a cross-sectioned epitaxially grown layer stack of AlxGa1-xAs and InxGa1-xAs on a GaAs substrate. The surface of BAM-L200 provides a flat pattern with stripe widths ranging down to 1 nm. Calibration distances, grating periods and stripe widths have been certified by TEM with traceability to the length unit. The combination of gratings, isolated narrow stripes and sharp edges of wide stripes offers a plenty of options for the determination of lateral resolution, sharpness and calibration of length scale at selected settings of imaging surface analytical instruments. The feasibility of the reference material for an analysis of the lateral resolution is demonstrated in detail by evaluation of ToF-SIMS, AES and EDX images. Other applications developed in the community are summarized, too. BAM-L200 fully supports the implementation of the revised International Standard ISO 18516 (in preparation) which is based on knowledge outlined in the Technical Report ISO/TR 19319:2013. Fundamental approaches to determination of lateral resolution and sharpness in beam-based methods T2 - SIMS Europe 2016 CY - Münster, Germany DA - 18.09.2016 KW - ISO standards KW - XPS KW - AES KW - SIMS KW - Lateral resolution PY - 2016 AN - OPUS4-37507 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goedecke, Caroline T1 - TiO2 based photocatalysis for the removal of emerging pollutants N2 - Advanced oxidation processes have become an important part of research due to their capacity to degrade many environmental pollutants during water treatment. Especially the heterogeneous photocatalysis is a promising method because it often results in a full mineralization of many hazardous compounds. Incomplete degradation reactions can result in transformation products due to oxidative conditions. The transformation products may have a higher toxicity than the precursor substances and are often only partly removed during water treatment. Since a lot of these compounds are still unknown, transformation products are not detected by target analysis used in sewage treatment plants and are often released into the aquatic ecosystems. Therefore, extensive and effective non-target analytical methods are necessary for the monitoring and identification of the transformation products which can be generated during waste water treatment. Titanium dioxide (TiO2) is the most frequently used photocatalyst because of its inexpensiveness, non-toxicity, chemical stability and its high photocatalytic activity. If TiO2 is irradiated electron-hole pairs are generated on the surface of the TiO2, resulting in the formation of active oxidized species such as hydroxyl radicals which can react with environmental pollutants. A model system has been developed to simulate photocatalytic reactions in a laboratory scale. The commonly used pharmaceuticals metformin and gabapentin were selected as model substances because of their high input in waste water and the little information about their fate during water treatment. Metformin is the drug of choice for treating type 2 diabetes. More than half of the total amount of pharmaceuticals in the environment are the antidiabetic agent metformin and its major transformation product guanylurea. Gabapentin is used as antiepileptic drug and for the treatment of neuropathic pain. It is found in waste water influent in the high ng/L range. First results of the optimization of the photocatalyst and its application are shown. T2 - ISEAC39 CY - Hamburg, Germany DA - 19.07.2016 KW - granulation KW - photocatalysis KW - environmental pollutants KW - advanced oxidation processes PY - 2016 AN - OPUS4-37219 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Sebastian Hanns-Otto T1 - Wide-spectrum dielectric functions of ALD deposited oxides relevant for photovoltaics N2 - Silicon surface passivation with atomic layer deposited (ALD) thin films has gained more and more interest in the PV community in recent years. With ALD good film quality, accurate thickness control and conformity are reached. Furthermore, ALD is capable of coating difficult substrates such as nanostructured surfaces with the same accuracy as flat surfaces. A variety of materials such as Al2O3, TiO2 and HfO2 demonstrate good surface passivation quality both for front and rear surface of silicon solar cells. In addition of providing good surface passivation, thin films with high refractive index e.g. HfO2, TiO2 and AlN can act simultaneously as antireflection coatings when applied on the front surface of the device. Hence, ALD thin films can reduce both electrical and reflective losses in solar cells. Thorough investigation of the optical properties of these layers is crucial for several reasons related to their production and use. Optical measurements provide a fast, easy, non-destructive, and in situ capable approach to quality assurance for photovoltaic devices. As the function of the final device is optical, optimisation of the device performance relies strongly on the knowledge of the wide-range dielectric function of the thin layers. In this contribution, we determined the optical constants of ALD generated layers of AlN, Al2O3, TiO2, and HfO2 in a wide spectral range covering the near ultraviolet and the mid-infrared regions by means of spectroscopic ellipsometry. By combining data from a UV-Vis-NIR ellipsometer (Woollam M2000DI) and an FTIR ellipsometer (Sentech Sendira), we can determine the optical constants alongside with the layer thicknesses from one large set of spectroscopic measurements. We consider this a contribution to the metrological treatment of stratified and structured thin films in the optical range by polarisation-sensitive measurement methods. T2 - International conference on spectroscopic ellipsometry (ICSE 7) CY - Berlin, Germany DA - 06.06.2016 KW - ALD (atomic layer deposited) KW - Ellipsometry KW - Photovoltaic KW - Solar Cell KW - HfO2 KW - Aln KW - Al2O3 KW - TiO2 PY - 2016 AN - OPUS4-37222 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balcazar Pust, Emilio T1 - Hotspots als potentielle Zündquelle in Mikroreaktoren N2 - Aus der Literatur ist bekannt, dass ein Hotspot innerhalb eines Mikroreaktors auf einer Katalysatoroberfläche entstehen und zur Zündung einer Detonation im Reaktorinneren führen kann. Um die Sicherheit von Mikroreaktoren diesbezüglich genauer untersuchen zu können, wurde ein Verfahren entwickelt, um einen künstlichen Hotspot mit regelbarer Temperatur im Inneren eines hierfür konstruierten Hochdruck-Mikroreaktors zu erzeugen. T2 - 14. Kolloquium zur chemischen und physikalischen Sicherheitstechnik (BAM-PTB-Kolloquium) CY - Berlin, Germany DA - 14.06.2016 KW - Hotspot KW - Mikroreaktor KW - Zündtemperatur KW - Explosionsschutz PY - 2016 AN - OPUS4-37174 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Salg, Steffen T1 - Evaluation of deflagration behaviour using different sized autoclaves N2 - Spontaneous deflagrations are recurring causes for incidents compromising the safety of humans and environment. In order to test the deflagration capability of substances, standard test methods are used according to VDI 2263 or UN-Manual. The test methods have been improved most recently by using an autoclave instead of conducting tests in open systems. The concept of using autoclaves for deflagration tests has been developed further on by varying the autoclave’s size, the substances and the test conditions. New experimental results are presented. On the basis of experimental data, numerical calculations will be developed in order to simulate the propagation of deflagrations. T2 - 15th International Symposium on Loss Prevention and Safety Promotion in the Process Industries CY - Freiburg, Germany DA - 05.06.2016 KW - Deflagration KW - Closed vessel testing PY - 2016 AN - OPUS4-37192 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Salg, Steffen T1 - Die Deflagration von Azodicarbonamid unterverschiedenen Umgebungsbedingungen N2 - Spontan einsetzende Deflagrationen sind eine wiederkehrende Ursache für sicherheitstechnisch bedeutsame Vorfälle in der chemischen Industrie. Bei der Explosion eines Mixers während der Herstellung einer Azodicarbonamid-Zubereitung wurden erhebliche Schäden in der Produktionsanlage und an Gebäuden in der Umgebung verursacht. Diese Tatsachen dienen als Motivation, die Deflagration von Azodicarbonamid (ADCA) unter verschiedenen Bedingungen zu untersuchen. T2 - BAM-PTB-Kolloquium 2016 CY - Berlin, Germany DA - 14.06.2016 KW - Deflagration KW - Closed vessel testing KW - Geschlossene Behälterprüfung PY - 2016 AN - OPUS4-37193 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wehrstedt, Klaus-Dieter T1 - CFD based reproduction of Amuay refinery accident 2012 N2 - Amuay accident 2012 is one of similar accidents happened in Buncefield (2005), Jaipur and Puerto Rico (2009), respectively. Since experimental reproduction of such accidents is not always possible numerical simulations help a lot to understand the scenarios on qualitative basis. In this work the accident is reproduced with a CFD model which takes into account the heaviness of the gas (LPG), wind and gravity driven spread. The leak was reported to be located near a number of spherical tanks. The ignition source was presumably the running vehicles on a nearby street. A part of the refinery containing the locations of leakage and ignition was considered as computational domain. The road is located at the eastern boarder. The area contains different tanks, whose height was estimated due to a lack of available data. The diameter was extrapolated from the available image data. Further, a grid of walls is located between a number of tanks. The total domain has a size of 750 m x 400 m x 50 m. An unstructured mesh was created using tetrahedral elements with prism layers at the ground to improve mesh quality in the boundary layer. The mesh has a total number of 775 686 cells. T2 - 15th Internation Symposium in Loss Prevention and Safety Promotion in the Process Industries CY - Freiburg, Germany DA - 05.06.2016 KW - CFD PY - 2016 AN - OPUS4-37195 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blankenhagel, Paul T1 - Feuerbälle organischer Peroxide: Thermische Strahlung und Sicherheitsabstände N2 - Das Abbrandverhalten und die thermische Strahlung von Poolfeuern organischer Peroxide (OP) wurden bereits in der Vergangenheit ausführlich untersucht. Dabei ergaben sich zum Teil erhebliche Unterschiede hinsichtlich der Abbrandraten, Temperaturen, Strahlungsintensitäten und Flammenlängen im Vergleich zu flüssigen Kohlenwasserstoffen. Das größere Gefahrenpotenzial von OP führt zu strikteren Sicherheitsbestimmungen für Lagerung und Transport. Da das Gefahrenpotenzial maßgeblich von den tatsächlich auftretenden Szenarien abhängt, ist eine Bewertung solcher Ereignisse unumgänglich um nachhaltig die Gesundheit von Mensch und Umgebung zu sichern. Ein Metallfass, gefüllt mit 200 Litern DTBP (Di-tertiär-butylperoxid), wurde auf dem Testgelände Technische Sicherheit der BAM einem Außenfeuer ausgesetzt. Durch den starken Wärmeeintrag erhöht sich die Massenabbrandrate des Peroxids um ein Vielfaches und das Fass entleert sich schließlich unter Ausbildung mehrerer Feuerbälle. Die Flammengröße, Flammentemperatur und damit die thermische Strahlung überschreiten die der gewöhnlichen OP-Poolfeuer. Die resultierenden höheren Sicherheitsabstände sind abschließend berechnet. T2 - 14. BAM-PTB-Kolloquium CY - Berlin, Germany DA - 14.06.2016 KW - DTBP KW - 10.13140/RG.2.1.3082.2002 PY - 2016 AN - OPUS4-37198 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kotschate, Daniel T1 - Reference block design for high resolution ultrasound immersion tank N2 - In respect of modern approaches in material sciences and highly increased requirements on materials on safety relevant components, quality management and non-destructive testing reclaims a steadily increased meaning. The destructive meaning of measuring the degree of purity is defined in DIN EN 10247 through metallurgical investigations, especially microsections. For and comparable, but non-destructive testing due ultrasonic testing, the material the SEP 1927 is a well-defined industry standard. A novel and alternative way of reference block construction was focused by this work. The proposed amendments, regarding the manufactoring and machining, are less time and cost consuming. Verified by measurements the presented reference block fits the same acoustical characteristics and the requirements of the guideline. T2 - World Conference on Non-Destructive Testing CY - Munich, Germany DA - 13.06.2016 KW - Immersion tank testing KW - SEP 1927 KW - Degree of purity KW - High resolution ultrasonic testing PY - 2016 AN - OPUS4-36850 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wosniok, Aleksander T1 - Gamma radiation influence on silica optical fibers measured by optical backscatter reflectometry and Brillouin sensing technique N2 - We have studied the influence of gamma rays on physical properties of different commercially available silica optical fibers stepwise irradiated up to a total dose of 100 kGy. The detection of radiation-induced changes in silica glass offers the possibility of using selected optical fibers as distributed radiation sensors. The measurements performed by us were based on optical backscatter reflectometry and Brillouin distributed sensing. The measurement methods enable an analysis of radiation-induced modification of the group refractive index and density of the optical fibers. The most distinct physical effect observed by us concerns the increase of the optical attenuation with rising total radiation doses. Quantitative measurement results indicate a crucial impact of fiber dopants on radiation-induced physical and sensory characteristics of silica optical fibers affected by differences in fiber fabrication techniques. Based on the obtained results, the suitability of distributed Brillouin sensing for dosimetry applications seems to be improved by modifying the refractive index profile of the fiber core. T2 - Sixth European Workshop on Optical Fibre Sensors CY - Limerick, IRL DA - 31.05.2016 KW - Brillouin frequency shift KW - Ionizing radiation KW - Gamma radiation KW - Radiation dosimetry KW - Optical fiber sensor KW - Brillouin scattering KW - Distributed measurement KW - Backscatter reflectometry PY - 2016 AN - OPUS4-37088 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Borchert, Björn T1 - The role of quality infrastructure in wind energy business N2 - This explorative poster presentation examines the role of quality infrastructure (QI) for the wind energy sector in Germany. We interviewed different stakeholders groups - from certification and accreditation bodies to insurance providers and wind energy producers - in order to gain an understanding on how different QI components contribute to the collaboration of the different stakeholder groups. We differentiate between mandatory and voluntary measures. Mandatory laws, according to our interviewees, contribute to the stability of power grids or safety of turbines. Voluntary measures are used to promote confidence among different project participants. Voluntary certifications are also signaling instruments, which help suppliers to enter projects. Accredited services are preferred vis-à-vis non-accredited services. Certifications of entire projects are rather used for non-standard large scale offshore projects. Stakeholders of the wind energy sectors are content with the QI in Germany but also suggest improvements, in particular for mutual acceptance of voluntary test procedures and results. T2 - EURAS Conference 2016 CY - Montpellier, France DA - 29.06.2016 KW - Quality infrastructure KW - Wind energy business KW - Certification PY - 2016 AN - OPUS4-36914 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esteban-Fernandez, Diego A1 - Traub, Heike T1 - High resolution laser ablation NWRimage system for single cell imaging N2 - This work demonstrates the sub-cellular resolution bio-imaging capabilities of the NWRimage system with Dual Concentric Injector (DCI) technology in a practical application. 3T3 fibroblast cells incubated with gold nanoparticles were imaged, demonstrating the sub-cellular imaging capabilities. A laser ablation system specifically designed for rapid, high resolution imaging was employed. The system´s optical layout is optimized to minimize crater diameters. Sensitivity and speed were achieved using the DCI technology for ultra-fast washout times. T2 - 13th European Workshop on Laser Ablation CY - Ljubljana, Slovenia DA - 12.07.2016 KW - Laser ablation KW - Bio-imaging KW - Nanoparticle PY - 2016 AN - OPUS4-36996 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppe, Enrico T1 - Magnetic field detection with an advanced FBG-based sensor device N2 - A high-performance fiber Bragg grating-based (FBG) sensor device for the detection of small magnetic fields has been developed. Based on a smart multilayer coating exposed over the physical length of the FBG, magnetic fields exhibited by rotating machine parts, power generators or current cable can easily be detected, analysed and evaluated. Consequently, this innovative, in-process and non-contact inspection method leads to an increase in quality and reliability of high-performing machine parts, devices and cables. The basic physical concept is based on a magnetostrictive multilayer coating system that strains the high-resolution FBG element. Subsequently, a fixed relationship between induced magnetic field and wavelength change of the FBG element forms the characteristic sensitivity curve. Intensive tests regarding the characterisation of the magnetic field FBG sensor have been carried out and its performance has been evaluated. T2 - EuroSensors XXX 2016 CY - Budapest, Hungary DA - 04.09.2016 KW - Strain KW - Fiber Bragg grating KW - Magnetostriction KW - Magnetic field PY - 2016 AN - OPUS4-37364 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erdmann, Maren T1 - Diesel and biodiesel induced degradation of polyethylene N2 - Renewable resources become more and more relevant to maintain energy demands for an increasing global population. Biosynthetic fuels like biodiesel might replace conventional petrochemical fuels, such as diesel. However, more research is needed to characterize the interaction between the different fuels and the polymeric material, especially with respect to ageing and degradation. The poster will present several interaction and degradation phenomena of high density polyethylene (PE-HD) induced by diesel and biodiesel 1-3. Also the possible influence of microbial growth (fungi and bacteria) is considered. The chosen PE-HDs are typical thermoplastic resins for container and storage tank applications. Degradation of PE-HD will be investigated by changes of the mechanical properties – with main emphasis on the Charpy impact strength 2. Furthermore, with alternating sorption and desorption cycles in combination with oven ageing the co-oxidation 3 of PE-HD in contact with biodiesel will be addressed. T2 - MoDeSt 2016 CY - Cracow, Poland DA - 04.09.2016 KW - Impact strength KW - PE-HD KW - Diesel KW - Biodiesel KW - Degradation PY - 2016 AN - OPUS4-37320 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schäferling, Michael T1 - Sensing and Imaging of Intracellular pH Using Polyethyleneimine-coated Photon Upconversion Based Nanoprobes N2 - Lanthanide-doped photon upconversion nanoparticles (UCNPs) exhibit many advantages compared to conventional Stokes-shifted luminescent probes such as organic dyes and quantum dots. Due to the upconversion (UC) process, which describes the conversion of NIR light into shorter wavelength radiation, the limitations of photobleaching, autofluorescence and low penetration depths in tissue shown by classical fluorescent probes absorbing in the UV/vis range are avoided. This makes UCNPs particularly useful for applications in complex samples occurring in bioanalysis, biomedicine and imaging. Sensing of intracellular pH is of particular interest in biomedical research since structure and function of biomolecules strongly depend on the concentration of protons in their environment. We described previously a UCNP nanosensor for pH based on a resonance energy transfer from hexagonal nanocrystals of NaYF4: Yb3+,Er3+ to a pH-sensitive fluorophore (pHrodoTM Red).[1] The nanocrystals were coated with a thin shell of aminosilane with several nanometer layer thickness for coupling of the pH indicator. In this contribution we present a new generation of UC nanoprobes that are coated with a layer of highly branched polyethylenimine (PEI). The PEI coating enables a higher coupling of indicator molecules on the particle surface, better signal to reference ratios in ratiometric readout and an improved cellular uptake compared to the aminosilane coated particles due to a more positive zeta potential. Again, pHrodoTM Red is used as pH indicator, sensitized by the 550 nm emission of the UCNPs. The nanoprobes are calibrated by ratiometric dual wavelength readout at 550 nm (reference signal) and 590 nm (sensor signal) and visualized using a scanning confocal fluorescence microscope with 980 nm excitation wavelength. We studied the cellular uptake efficacy of the nanoprobes and determined to which type of compartment, lysosomes, endosomes or cytosol, the probes are targeted to by measuring the pH of their microenvironment. An in situ control was performed in live cells by a treatment with nigericin, whereby the pH of all intracellular compartments is set at extracellular level. Our results suggest that the PEI coating facilitated endosomal escape of the nanoprobes. T2 - Europtrode XIII CY - Graz, Austria DA - 20.03.2016 KW - upconversion KW - chemical sensing KW - nanoprobes PY - 2016 AN - OPUS4-37283 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dörfel, Ilona T1 - Interface formation between steels and alumina coating in corrosive atmospheres N2 - A way to increase the application range and the lifetime of metallic substrates is their protection by coatings. Here the effect of alumina coatings on common steel substrates having different Chromium content is examined. The background of the investigations is to expand the application possibilities of mechanically good steels to higher temperatures and corrosive atmospheres in the framework of the European project POEMA (“Production of Coatings for New Efficient and Clean Coal Power Plant Materials”) which was introduced to identify materials that can withstand the aggressive conditions arising during the oxyfuel process in modern coal power plants. This process is one possibility to reduce the CO2 emission by firing the coal in oxygen and recirculated flue gas. Substrate materials were P92 (9% Cr), K44X (19% Cr), and HR3C (25% Cr). The alumina coatings were deposited by a sol-gel-process using boehmite, this is relatively simple and offers application possibilities for a wide technical range without special surface preparations. All samples were dried for 30 minutes at 650° C to remove the organic components and to start the crystallization process of the alumina. For P92 and HR3C the following conditions simulated the oxyfuel process: 650°C in wet flue gas for 300h for the steel P92, the same conditions for 2000 hours for the steel HR3C. K44X was tested at 900°C in laboratory air for 500 hours. As well after drying as after testing TEM characterizations were performed, where the interfaces between steel and coating are of special interest to characterize the microstructure, detect failure mechanisms, and identify diffusion and crystallization processes and so to understand the mode of action of the alumina coating. The TEM samples were prepared by the lift-out-technique using a FIB Quanta 3D and were investigated in a STEM JEM2200FS at 200kV. After the coating and drying process all steels show chromium oxide layers directly at the steel surface, they vary in thickness and are island shaped in the case of the steel K44X. Chromium depletion arose more or less in the superficial zones of all samples. After the long term tests K44X showed breakaway oxidation while P92 and HR3C presented intact interfaces. This reveals: Beside the positive impact of the coating not only the Chromium content of a substrate is essential for the formation and self-healing of protective chromium oxide layers during the service time of steels. One has to consider the possibility of the steel to allow a continuously Cr diffusion to the interface and so e renewal of the Cr-oxide layer. T2 - EMC2016 CY - Lyon, France DA - 28.08.2016 KW - TEM KW - Coatings KW - Corrosion protection PY - 2016 AN - OPUS4-37306 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liehr, Sascha T1 - Phase-OFDR for distributed disturbance measurement N2 - We introduce the optical frequency domain reflectometry (OFDR) technique based on intensity modulation frequency sweep measurement for distributed disturbance measurement in optical fibres. By evaluating interferometric Rayleigh scattering changes along the fibre, strain and temperature changes are detected with 100 n(epsilon) sensitivity and 10 mK resolution. The vibration frequencies for low frequencies and up to the kHz-range can be obtained from power change evaluation in the spatial domain. This novel OFDR approach is a low-cost alternative for distributed disturbance measurement up to distances of several kilometres. T2 - Sixth European Workshop on Optical Fibre Sensors CY - Limerick, Ireland DA - 31.05.2016 KW - Temperature sensing KW - OFDR KW - Distributed sensor KW - Rayleigh scattering KW - Strain measurement PY - 2016 UR - http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2525146 DO - https://doi.org/doi:10.1117/12.2236851 AN - OPUS4-37229 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Duffner, Eric T1 - Hydraulic load cycle test bench for extreme temerature tests N2 - Components, function and technical details of the hydraulic load cycle test bench for extreme temperature test. T2 - Hannover Industrie Fair CY - Hannover, Germany DA - 25.04.2016 KW - extreme temperature KW - life cycle test KW - cylinders PY - 2016 AN - OPUS4-37251 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Duffner, Eric T1 - Hydraulic slow burst test bench N2 - Components, function and technical details of the Hydraulic slow burst test bench T2 - Hannover Industrie Fair CY - Hannover, Germany DA - 25.04.2016 KW - cylinders KW - burst test KW - creep behaviour PY - 2016 AN - OPUS4-37252 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schalau, Bernd T1 - Probleme und Grenzen der VDI RL 3783 - Stand der Überarbeitung N2 - Die VDI Richtlinie 3783 mit Berechnungsmethoden zur Abschätzung der Ausbreitung störfallbedingter Freisetzungen im Rahmen von Sicherheitsberichten erschien in den Jahren 1987 (Blatt 1) und 1990 (Blatt 2). Während sich die VDI Richtlinie 3783 Blatt 1 auf dichteneutrale und leichte Gase bezieht, beschreibt die VDI Richtlinie 3783 Blatt 2 eine Berechnungsmethode für schwere Gase. In der Kommission Reinhaltung der Luft im VDI und DIN wurde 2009 die Arbeitsgruppe „Ausbreitung von störfallbedingten Freisetzungen – Sicherheitsanalyse“ mit der Zielsetzung gegründet, die VDI-Richtlinie 3783 zu überarbeiten. Die Weiterentwicklung von Blatt 1 soll auf der Grundlage eines Lagrange´schen Partikelmodells (AUSTAL2000, VDI-Richtlinie 3945, Blatt 3) erfolgen, das auch zur Umsetzung der TA-Luft verwendet wird. Der Leistungsumfang der bisherigen Richtlinie muss erhalten bleiben. Kritikpunkte an der VDI 3783 Blatt 1 sind: - Keine Berücksichtigung der Bebauung. - Die Ergebnisse im Nahbereich sind ungenau. - Die Festlegung der Inversionshöhe ist problematisch. - Die Vorgabe einer Mindestwärmeleistung für die Berücksichtigung einer Überhöhung ist nicht sinnvoll. Mit dem Einsatz eines Lagrange´schen Partikelmodells können diese Kritikpunkte im Wesentlichen behoben werden. Problematisch ist die Kopplung zwischen dem Schwergasmodell und dem Lagrange´schen Partikelmodell. Das bisherige Vorgehen lässt sich bei Berücksichtigung der Bebauung nicht ohne weiteres übertragen. Eine Überarbeitung von Blatt 2 ist zurzeit nicht geplant. Um die in der Praxis auftretenden Probleme bei der Anwendung der Richtlinie zu verringern, müssten weitere experimentelle Untersuchungen durchgeführt werden. T2 - DECHEMA Kolloquium Störfallbedingte Ausbreitung von Emissionen CY - Merseburg, Germany DA - 27.10.2016 KW - Modellierung KW - Störfallauswirkungsbetrachtungen KW - Gasausbreitung PY - 2016 AN - OPUS4-37964 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dippong, Martin T1 - Fraunhofer Life Science Day N2 - Their high affinity, selectivity and specificity make monoclonal antibodies (mAbs) very important tools in research, diagnostics and therapy. The production of mAbs is routinely performed by hybridoma technique. Hybridomas are generated by fusing antibody-producing B cells with indefinitely proliferating myeloma cells. Both, cell fusion and the indispensable identification and isolation of the desired antibody-producing hybridoma clone is still far from being trivial. We describe a novel method that should help to optimize the cell fusion, and the screening for antibody-secreting hapten-specific hybridoma cells by using fluorescence activated cell sorting and single-cell fusion. Hybridoma cells specific for a hapten were incubated with a hapten-peroxidase conjugate (hapten-HRP), which was subsequently incubated with a fluorophore-labeled polyclonal anti-peroxidase antibody (anti-HRP-Alexa Fluor® 488). To characterize the expression of membrane-bound immunoglobulin G (IgG) a fluorophore-labeled anti-mouse IgG antibody (anti-IgG-Alexa Fluor® 647) was used. Successful staining was verified by confocal laser scanning microscopy (CLSM). We show that it is possible to specifically label hapten-specific hybridoma cells. It should also be possible to use this labelling approach for the isolation of hapten-specific B cells from the spleen and use these cells for single-cell fusion. Parallelized cell fusion chips were developed to increase fusion efficiencies. T2 - Fraunhofer Life Science Day 2015 CY - Leipzig, Germany DA - 03.07.2015 KW - Single-cell fusion KW - Hybridoma KW - Monoclonal antibodies PY - 2015 AN - OPUS4-37872 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Konnertz, Nora T1 - QCM System for the Characterization of Gas Sorption and Physical Aging of Membrane Polymers for Gas Separation Applications N2 - Polymers are favorable materials for gas separation membranes. In general, gas transport experiments are performed with films in the range of 100 µm thickness. However, in large-scale processes very thin selective polymer layers in the range of 100 nm to 1 µm are used. Moreover, it was shown that thin films behave different compared to thick films with respect to gas transport properties and physical aging as well. Thus, for fundamental research it is important to realize gas transport experiments with thin films. The Quartz Crystal Microbalance (QCM) is a very sensitive method to detect mass changes in the range of nanograms. Therefore, this method enables sorption experiments with thin films or layers attached to the QCM crystal (100 nm up to 1 µm). Here, we present the experimental set-up for using the QCM technique for characterizing the gas sorption behavior of thin polymer films in a temperature controlled pressurized environment (up to 50 bar) - also quartz crystals and crystal holders were optimized. The study aims for the characterization of long-term behavior and physical aging of high-performance polymers for gas separation membranes - such as polyimides and polymers of intrinsic microporosity (PIMs) and respective nanocomposites. Especially the differences of the behavior of thin films compared to films with thicknesses up to 100 µm as well as nanofiller induced-effects are adressed. T2 - Polydays 2016 CY - Potsdam, Germany DA - 28.09.2016 KW - Quartz Crystal Microbalance QCM KW - Thin Films; KW - Gas Sorption KW - High Pressure PY - 2016 AN - OPUS4-37911 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fernandes, L. T1 - Degradation of pharmaceuticals in environmental waters: combined action of bacteria, light and photosensitizers T2 - XX Encontro Luso-Galego de Quimica CY - Porto (Portugal) DA - 2014-11-26 PY - 2014 AN - OPUS4-33426 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mohamed, Alaa T1 - Plasma polymerized acrylic acid and formation of COOH-rich polymer layers in the presence of CO2 gas T2 - ISP 22 - 22nd International Symposium on Plasma Chemistry CY - University of Antwerp, City Campus, Antwerp, Belgium DA - 2015-07-05 PY - 2015 AN - OPUS4-33801 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rohwetter, Philipp T1 - New Generation of Polymer-Optical Fibres (POF) and its Potential for Sensor Applications T2 - Messe Sensor+Test 2015 CY - Nuremberg, Germany DA - 2015-05-19 PY - 2015 AN - OPUS4-33726 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Stephan T1 - Synthetic Strategies to obtain Haptens for the Production of antibodies against Diclofenac T2 - Tag der Biotechnologie CY - Berlin, Germany DA - 2015-07-16 PY - 2015 AN - OPUS4-33777 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hofmann, Detlef T1 - Embedding of Fibre-Optic Sensors in High-Performance Timber Structures T2 - 31th Danubia-Adria Symposium CY - Kempten, Germany DA - 2015-09-24 PY - 2015 AN - OPUS4-33743 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Ralf T1 - Design of plasmonic flourescence reporters based on silver nanoparticles T2 - DPG Summer School on Physical properties of nanopartocles CY - Bad Honnef, Germany DA - 2015-07-27 PY - 2015 AN - OPUS4-33764 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Choi, Youngeun T1 - Investigating optical properties of DNA coated gold nanoparticles T2 - DPG Summer School on Physical properties of nanopartocles CY - Bad Honnef, Germany DA - 2015-07-27 PY - 2015 AN - OPUS4-33765 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Myrach, Philipp T1 - In-line Laser Thermography for Crack Detection: A Numerical Approach T2 - QIRT Asia 2015 CY - Mamallapuram, Tamil Nadu, India DA - 2015-07-06 PY - 2015 AN - OPUS4-33769 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hofmann, Detlef T1 - Zuverlässigkeit von optischen Fasern zur Dehnungsmessung in Offshore-Anwendungen T2 - 4. Zukunftskonferenz: Wind & Maritim CY - Rostock, Germany DA - 2015-05-06 PY - 2015 AN - OPUS4-33750 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank T1 - A Simplified Approach to Model Liquid Cargo-Vehicle during an ABS Braking T2 - 2015 International Mechanical Engineering Congress & Exposition CY - Houston, Texas DA - 2015-11-16 PY - 2015 AN - OPUS4-34954 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holm, Olaf T1 - ATR - Aufschluss, Trennung und Rückgewinnung von ressourcenrelevanten Metallen aus Rückständen thermischer Prozesse mit innovativen Verfahren T2 - Die Zukunftsstadt als Rohstoffquelle - Urban Mining / r³ Abschlusskonferenz CY - Bonn, Deutschland DA - 2015-09-15 PY - 2015 AN - OPUS4-34928 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Illerhaus, Bernhard T1 - Analysis of soil structure as indicator of soil quality T2 - Tagung im Landwirtschaftsministerium über "Mikroorganismen und Wirbellose - entscheidende Dienstleister für Landwirtschaft und Ernährung" CY - Berlin, Germany DA - 2015-11-26 PY - 2015 AN - OPUS4-34982 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred T1 - Untersuchungen und modellhafte Sanierung schwer geschädigter mittelaterlicher Glasmalereien bedeutender sakraler Bauten in den durch Umweltschadstoffe belasteten Städten Kujawiens Thorn/Torun und Leslau/Wloclawec (Polen) T2 - Poster während der Restaurierungsarbeiten in der Johanneskirche CY - Thorn, Polen DA - 2015-11-12 PY - 2015 AN - OPUS4-34985 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Identifizierung und analytische Charakterisierung von unbekannten Arsenolipiden in Hering T2 - CANAS - Colloquium Analytische Atomspektroskopie CY - Leipzig, Germany DA - 2015-03-08 PY - 2015 AN - OPUS4-33545 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Neue Methoden zur Arsenspezies-Analyse in Wasser und Biotaproben T2 - Anakon 2015 CY - Graz, Austria DA - 2015-03-23 PY - 2015 AN - OPUS4-33546 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goedecke, Caroline T1 - Untersuchung der Transformation von umweltrelevanten Schadstoffen am Beispiel von 4-n-Octylphenol T2 - Anakon 2015 CY - Graz, Austria DA - 2015-03-23 PY - 2015 AN - OPUS4-33548 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bandow, Nicole T1 - Mobility of Cd in soils fertilized with sewage sludge containing Cd pigments T2 - AquaConSoil CY - Copenhagen, Denmark DA - 2015-06-08 PY - 2015 AN - OPUS4-33666 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kanzler, Daniel T1 - Ein Vorgehen zur repräsentativen und richtigen POD T2 - DACH Jahrestagung 2015 CY - Salzburg, Austria DA - 2015-05-11 PY - 2015 AN - OPUS4-33721 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina T1 - Können unsere Prüfanweisungen besser sein? T2 - DACH Jahrestagung 2015 CY - Salzburg, Austria DA - 2015-05-11 PY - 2015 AN - OPUS4-33722 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina T1 - Ganzheitliche Betrachtung der Zuverlässigkeit von industriellen ZfP-Systemen - können wir wirklich die Zuverlässigkeit vor Ort voraussagen? T2 - DACH Jahrestagung 2015 CY - Salzburg, Austria DA - 2015-05-11 PY - 2015 AN - OPUS4-33724 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rohwetter, Philipp T1 - Distributed Acoustic Sensing for Process and Health Monitoring T2 - Messe Sensor+Test 2015 CY - Nuremberg, Germany DA - 2015-05-19 PY - 2015 AN - OPUS4-33725 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Casperson, Ralf T1 - Elektromagnetische Verfahren T2 - Messe CONTROL 2015 CY - Stuttgart DA - 2015-05-05 PY - 2015 AN - OPUS4-33697 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Casperson, Ralf T1 - Elektromagnetische Verfahren T2 - Messe Sensor & Test 2015 CY - Nürnberg DA - 2015-05-19 PY - 2015 AN - OPUS4-33698 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Janine T1 - Tributyltin analysis in different water matrices T2 - Humic Substances in Ecosystems 10 CY - Torun, Poland DA - 2015-06-17 PY - 2015 AN - OPUS4-33700 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eberle, Arno T1 - Flip Chip Lotbumps thermisch-zyklisch belastet - Einfluss des Substratmaterials auf die Zuverlässigkeit mikromechanischer Aufbauten T2 - Hannover Messe CY - Hannover DA - 1999-04-19 PY - 1999 AN - OPUS4-33686 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Philipp, Rosemarie T1 - Reference methods and materials for European water ligistlation T2 - Anakon 2015 CY - Graz, Austria DA - 2015-03-23 PY - 2015 AN - OPUS4-33646 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sklorz, Christian T1 - Performance of dangerous goods tanks in a fire - Part II T2 - Fire Retardancy and Protection of Materials (FRPM 15) CY - BAM TTS Brandprüfstände (Baruth) DA - 2015-06-22 PY - 2015 AN - OPUS4-33651 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behrens, H. T1 - Water, the other network modifier in borate glasses T2 - GeoBerlin 2015 CY - Berlin, Germany DA - 2015-10-05 PY - 2015 AN - OPUS4-34531 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gottlieb, Cassian T1 - Improvment of qualitative LIBS analysis for harmful species in building materials due to multivariate analysis T2 - 8th Euro-Mediterranean Symposium on Laser-Induced Breakdown Spectroscopy (EMSLIBS) 2015 CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-34507 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mülow, Ulrike T1 - Transformation of triazole fungicides T2 - Environmental monitoring of biocides in Europa - specif strategies CY - Berlin DA - 2015-06-25 PY - 2015 AN - OPUS4-34511 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goedecke, Caroline T1 - A novel GC-MS-method for the determinationof metformin in water samples T2 - ICCE 2015 CY - Leipzig DA - 2015-09-20 PY - 2015 AN - OPUS4-34512 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mülow, Ulrike T1 - Ruggedness study investigating extractability of PCB and OCP from soil T2 - 15th International Conference on Chemistry and the Environment (EuChems) CY - Leipzig DA - 2015-09-20 PY - 2015 AN - OPUS4-34513 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oberleitner, Lidia T1 - Fluorescence polarization immunoassay - Fast Screening method for antibody characterization T2 - Tag der Biotechnologie CY - Berlin, Germany DA - 2015-07-16 PY - 2015 AN - OPUS4-34514 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dörfel, Ilona T1 - Microstructure of a steel-alumo-sol-coating-system after heat treatment in an oxyfuel atmosphere T2 - Microscopy Conference 2015 CY - Göttingen, Germany DA - 2015-09-06 PY - 2015 AN - OPUS4-34518 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meffert, Janine T1 - An embedded fibre Bragg grating sensor with a self-calibration function based on a magnetostrictive coating T2 - Micro Photonics, Preview Event 2015 CY - Berlin, Germany DA - 2015-11-26 PY - 2015 AN - OPUS4-35085 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schoknecht, Ute T1 - Beschreibung der Auswaschverläufe von Bioziden aus bewitterten Materialien anhand eines Regressionsmodells T2 - 20. Jahrestagung der SETAC GLB CY - Zürich, Schweiz DA - 2015-09-07 PY - 2015 AN - OPUS4-35006 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich T1 - Experimental determination of (p, p, T) data for binary mixures of methane and helium T2 - 19 th Symposium on Thermophysical Properties CY - Boulder; CO, USA DA - 2015-06-21 PY - 2015 AN - OPUS4-35055 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fischer, Franziska T1 - Direct in situ analysis of milling reactions for mechanistic studies using X-ray diffraction combined with Raman spectoscopy T2 - International Course of Crystallography; 48th Course: Engineering crystallography: From molecule to crystal to functional forms CY - Erice (Italy) DA - 2015-06-05 PY - 2015 AN - OPUS4-35016 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goedecke, Caroline T1 - Development of GC-MS method for the analysis of metformin in water T2 - 11. Langenauer Wasserforum CY - Langenau DA - 2015-11-08 PY - 2015 AN - OPUS4-35021 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mülow, Ulrike T1 - Technical transformation of triazole fungicides T2 - 11. Lanenauer Wasserforum CY - Langenau DA - 2015-11-08 PY - 2015 AN - OPUS4-35022 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fettig, Ina T1 - Quecksilberanalytik nach den Anforderungen der Wasserrahmenrichtlinie T2 - Anakon 2015 CY - Graz, Austria DA - 2015-03-23 PY - 2015 AN - OPUS4-35023 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fettig, Ina T1 - Traceability for mercury measurements T2 - CANAS - Colloquium Analytische Atomspektroskopie CY - Leipzig, Germany DA - 2015-03-08 PY - 2015 AN - OPUS4-35024 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fettig, Ina T1 - Traceability for mercury measurements T2 - European Winter Conference on Plasma Spectrochemistry (EWCPS) 2015 CY - Münster DA - 2015-02-22 PY - 2015 AN - OPUS4-35025 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - Characterisation of Non-ideal Samples with Spectroscopic Mapping and Imaging Ellipsometry T2 - Workshop Quantitative 3D-Mikroskopie von Oberflächen CY - Braunschweig, Germany DA - 2015-04-28 PY - 2015 AN - OPUS4-33400 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Anka T1 - Thermoanalytische Untersuchungen von Plasmabeschichteten Polyolefinen mit Flammenschutzeigenschaften T2 - Die 21. Kalorimetrietage CY - Braunschweig, Deutschland DA - 27.05.2015 PY - 2015 AN - OPUS4-33384 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Anka T1 - Untersuchungen zur thermischen Zersetzung von Azodicarboxylaten mittels STA-FTIR-MS T2 - Die 21. Kalorimetrietage CY - Braunschweig, Deutschland DA - 2015-05-27 PY - 2015 AN - OPUS4-33385 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Compatibility of sealing materials with biofuels, biodiesel heating oil blends and premium grade fuel at different temperatures T2 - Frontiers in polymer science CY - Riva del Garda, Italien DA - 2015-05-20 PY - 2015 AN - OPUS4-33314 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Carl, Peter T1 - A hapten microarray for multianalyte applications T2 - 9. Deutsches BioSensor Symposium CY - München DA - 2015-03-11 PY - 2015 AN - OPUS4-33542 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas T1 - Influencing factors on the inspection performance of wheel axle sets under training conditions T2 - DACH CY - Salzburg DA - 2015-05-11 PY - 2015 AN - OPUS4-34022 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Babutzka, Martin T1 - Electrochemical investigations regarding the influence of deformation-induced martensite on the corrosion behaviour of austenitic stainless steels T2 - Eurocorr 2015 CY - Graz, Austria DA - 2015-09-06 PY - 2015 AN - OPUS4-34068 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Taabache, Soraya T1 - Self assembling dendritic amphiphiles containing Newkome-type dendrons: Synthesis and aggregation in aqueous media T2 - GDCh-Wissenschaftsforum Chemie 2015 CY - Dresden, Germany DA - 2015-08-30 PY - 2015 AN - OPUS4-34032 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Babutzka, Martin T1 - The KorroPad - A novel test method for assessing the pitting corrosion susceptibility of stainless steel surfaces T2 - Eurocorr 2015 CY - Graz, Austria DA - 2015-09-06 PY - 2015 AN - OPUS4-34069 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Siebler, Daniel T1 - New Generation of Polymer-Optical Fibres (POF) and its Potential for Sensor Applications T2 - 30. Control - Internationale Fachmesse für Qualitätssicherung CY - Stuttgart, Germany DA - 2015-05-05 PY - 2015 AN - OPUS4-34075 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Millar, Steven T1 - Laser Induced Breakdown Spectroscopy (LIBS) - innovative method for on-site measurements on chloride contaminated building materials T2 - International Symposium NDT in Civil Engineering, NDT-CE 2015 CY - Berlin, Germany DA - 2015-09-15 PY - 2015 AN - OPUS4-34429 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Tobias T1 - Improving limits of detection of chlorine and sulfur in cement with double pulse LIBS and electric spark T2 - 8th Euro-Mediterranean Symposium on Laser-Induced Breakdown Spectroscopy 2015 (EMSLIBS 2015) CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-34430 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie T1 - Investigation of Reinforcement Corrosion using Automated Low-Frequency Ultrasonic Echo T2 - Danube Adria Symposium CY - Stary Smokovec, Slowakei DA - 2015-09-21 PY - 2015 AN - OPUS4-34449 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hofmann, Michael T1 - Determination of Radon Exhalation Rates from Construction Materials using Emission Test Chambers T2 - BAM PhD Students Day 2015 CY - Berlin, Germany DA - 2015-07-14 PY - 2015 AN - OPUS4-34405 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bresch, Harald T1 - OECD-WMPN Dossiers from the Sponsorship Programme - A first draft review of the physical/chemical testing results T2 - Europe Aerosol Conference CY - Milano, Italy DA - 2015-09-07 PY - 2015 AN - OPUS4-34408 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred T1 - Untersuchungen zur Provenienz von Gläsern aus dem Kloster Maulbronn T2 - 20. Kongress der Internationalen Vereinigung für die Geschichte des Glases (AIHV20) CY - Fribourg/Romont, Schweiz DA - 2015-09-07 PY - 2015 AN - OPUS4-34410 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schubert, Marcus T1 - Automatic Scanning System for Non-destructive Testing of Vertical and Bottom Surfaces T2 - NDT-CE 2015 CY - Berlin, Germany DA - 2015-09-15 PY - 2015 AN - OPUS4-34387 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisermann, René T1 - Distributed acoustic sensing for process and health monitoring T2 - Control - Internationale Fachmesse für Qualitätssicherung CY - Stuttgart, Germany DA - 2015-05-05 PY - 2015 AN - OPUS4-34377 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auenmüller, J. T1 - Unveiling Interior Structures of Casting Moulds - Computed Tomography of Ancients Artefacts T2 - 1st International Conference on Archaeometallurgy: Non-ferrous Metals Metallurgy and Experimental Archaeology CY - Brussels, Belgium DA - 2015-10-03 PY - 2015 AN - OPUS4-34435 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meinel, Dietmar T1 - Discovery of Lost Egyptian Gods - Finishing Anient Bronze Cast Work with CT T2 - International Symposium on Digital Industrial Radiology and Comuted Tomography (DIR) CY - Ghent, Belgium DA - 2015-06-22 PY - 2015 AN - OPUS4-34437 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grothe, Sven T1 - Ultrasonic Signal Evaluation Used to Detect Temperature Changes in a Concrete Specimen Caused by a Heating System T2 - NDT-CE 2015 CY - Berlin, Germany DA - 2015-09-15 PY - 2015 AN - OPUS4-34391 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grothe, Sven T1 - Ultrasonic Signal Evaluation Used to Detect Weather-Related Temperature Changes in a Concrete Specimen T2 - NDT-CE 2015 CY - Berlin, Germany DA - 2015-09-15 PY - 2015 AN - OPUS4-34392 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Siebler, Daniel T1 - Elastomeric fluorescent POF for partial discharge detection: recent progress T2 - 24th International Conference on Optical Fibre Sensors, OFS24 CY - Curitiba, Brazil DA - 2015-09-28 PY - 2015 AN - OPUS4-34397 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bütefisch, S. T1 - New Reference Material for Imaging XPS (X-ray Photoelectron Spectroscopy) Instrument Characterization T2 - 17th International Conference on Sensors and Measurement Technology (SENSOR 2015) CY - Nürnberg, Germany DA - 2015-05-19 PY - 2015 AN - OPUS4-34184 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Konnertz, Nora T1 - QCM System for the Characterization of Gas Sorption and Physical Aging on Membrane Polymers and Nanocomposites for Gas Separation Applications T2 - EUROMEMBRANE 2015 CY - Aachen, Germany DA - 2015-09-06 PY - 2015 AN - OPUS4-34172 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehnik-Habrink, Petra T1 - Robustheitsstudie zur Extraktion von OCP aus Boden mit unterschiedlichen TOC-Gehalt T2 - SETAC GLB "Ökotoxikologie und Umweltchemie" CY - Zürich DA - 2015-09-07 PY - 2015 AN - OPUS4-34725 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Glaus, Reto T1 - Diagnostics of molecular emission in laser induced plasmas and comparison to simulations N2 - Spatial- and time-resolved experimental studies on atomic and ionic species in laser induced plasmas (LIP) were conducted extensively in the past. Such studies gave important insights to the complex mechanisms of the plasma formation and helped to establish models to simulate radiation of the plasma in due course of its evolution. On the other hand, the formation of molecular species in LIP is far less understood. This study aims at tomographic measurements of 3D distributions of molecular species in laser induced plasmas followed by the comparison of the results with a chemical model of LIP. Silicon, graphite and silicon-carbide were ablated into a mixture of nitrogen and argon of varying proportion. Emissions of molecular species including C2, CN, Si2 and SiN were recorded and their number densities as a function of the radial position in the plasma were calculated via Abel inversion. Most intense molecular emissions were observed to be from the plasma center and not from the colder plasma rim. This finding does not agree with simulation results obtained for spherically symmetric plasmas, suggesting the assumption of spherical symmetry may cause the disagreement. In fact, further experimental studies reveal a pronounced formation of vortices under certain experimental conditions. Mechanisms for the vortex formation are further investigated under various laser ablation conditions. Methods to incorporate the vortex formation into the simulations are proposed. T2 - 8th euro-mediterranean symposium on laser-induced breakdown spectroscopy 2015 CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-34660 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Robustheitsstudie ISO 16558-1: Leichtflüchtige Kohlenwasserstoffe in Boden T2 - Altlastensymposium CY - Frankfurt am Main DA - 2015-11-30 PY - 2015 AN - OPUS4-34669 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holzlechner, Gerald T1 - METROLOGY FOR MONITORING INFECTIOUS DISEASES Flow cytometer, ToF-SIMS, and XPS characterization of DNA adhesion losses on micro fluidic PCR devices T2 - AOFA 18. Arbetistagung Angewandte Oberflächenanalytik CY - Kaiserslautern DA - 2014-09-29 PY - 2014 AN - OPUS4-34685 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Henryk T1 - Estimating shell thicknesses of core-shell nanoparticles using XPS T2 - BAM PhD students day 2015 CY - Berlin DA - 2015-07-14 PY - 2015 AN - OPUS4-34696 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - Matrixeinflüsse bei der Bestimmung von Arzneimittelrückständen mittels LC-MS/MS in Oberflächenwasserproben bei Konzentrationen im ppt-Bereich N2 - Zur Bestimmung von Arzneimittelrückständen in Oberflächengewässern wird häufig die LC-MS/MS als Methode der Wahl eingesetzt. Obwohl sich dieses Nachweisverfahren durch eine hohe Empfindlichkeit und Selektivität auszeichnet, gibt es vor allem bei geringen Substanzkonzentrationen häufig störende Einflüsse durch Matrixeffekte. Diese Matrixeffekte können unterschiedliche Ursachen haben. Einige Matrixeffekte werden am Beispiel des Wirkstoffs Carbamazepin erläutert. Carbamazepin wird durch Kläranlagen nur partiell aus dem Abwasser entfernt und ist im Spurenbereich auch noch im Trinkwasser nachzuweisen. Wenn für die LC-MS/MS wasserbasierte Anteile in der mobilen Phase genutzt werden, befinden sich trotz Verwendung einer Labor-Reinstwasseranlage in der mobilen Phase noch kleinste Konzentrationen von Carbamazepin, welche einen Blindwert im unteren ppt-Bereich verursachen. Weitere Matrixeffekte treten durch die unterschiedliche Qualität der Oberflächenwasserproben auf. Koelutionen von weiteren Inhaltstoffen zeitgleich mit dem Zielanalyten führen zu einer Diskriminierung des Meßsignals. Verbindungen, die den gleichen Massenübergang bei nahezu identischer Retentionszeit zeigen, erfordern eine reproduzierbare chromatographische Vortrennung oder die Wahl einer alternativen HPLC-Säule. T2 - ANAKON 2015 CY - Graz, Austria DA - 23.03.2015 KW - Arzneimittelrückstände in Oberflächenwasserproben KW - HPLC-MS/MS KW - Massenspektrometrie KW - Carbamazepin PY - 2015 AN - OPUS4-35793 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sieber, Sarah T1 - Image denoising of ultrasonic echo data acquired on concrete N2 - Ultrasonic echo testing has become a common method in civil engineering for the investigation of concrete structures. The detection of inhomogeneities, reinforcing elements and the geometry of the object is required for quality assurance and Inspection. This assessment depends on the quality of ultrasonic images which can be improved by using Reverse Time Migration (RTM) rather than the standard method, Synthetic Aperture Focusing Technique (SAFT). Although RTM provides a better mapping of circular objects and (dipping) reflectors, the image is corrupted by migration noise. To suppress the image noise, we have tested various filter methods in the spatial domain, frequency domain as well as in the curvelet domain on ultrasonic RTM images. We found that either a spatial edge detection filter in combination with a lowpass filter (Laplacian of Gaussian filter) or two lowpass filter with different filter parameters (Difference of Gaussian filter) removed artefacts. An additional smoothing was obtained by applying the first generation curvelet transform after downsampling the image matrix and adding Gaussian noise. The proposed filter scheme is able to suppress RTM noise and enhance the image quality such that the objective interpretation of ultrasonic images for Quality assessment of concrete specimen is simplified. T2 - 76. Jahrestagung der Deutschen Geophysikalischen Gesellschaft CY - Münster, Germany DA - 14.03.2016 KW - Ultrasonic echo technique KW - Reverse-time migration KW - Image Denoising KW - Curvelet Transform PY - 2016 AN - OPUS4-35839 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Asadujjaman, Asad T1 - Aggregation behavior of UCST-Type poly(acrylamide-co-acrylonitrile) copolymer across the phase transition temperature N2 - Thermoresponsive polymers have shown great potential in applications such as bioseparation, drug delivery and diagnostic. Only few thermoresponsive polymers that present an upper critical solution temperature (UCST) in a relevant temperature range, i.e. Phase separate from solution upon cooling, have been reported so far. Moreover, the most studied UCST type polymers namely polybetaines are difficult to use under physiological conditions, which significantly restricts their potential applications. Therefore, UCST polymers with sharp and robust phase transition in physiological conditions (in the presence of salts, ions etc.) are highly needed in order to extend the range of applications of this class of polymers. Herein, a robust UCST-type copolymer of acrylamide (AAm) and acrylonitrile (AN) (poly(AAm-co-AN)) was prepared by reversible addition fragmentation chain Transfer (RAFT) polymerization and its thermo-induced aggregation behavior in aqueous media was studied by turbidity and dynamic light scattering measurements. At temperature below the UCST, the poly(AAm-co-AN) copolymer chains were aggregated together. The aggregate size was found to be larger with increasing AN contents and became smaller upon dilution of the copolymer solutions. While above the UCST, the poly(AAm-co-AN) copolymer chains were expanded and weekly associated in solution. The association between the copolymer chains formed smaller aggregates with increasing the AN Contents or the concentration of the solutions. A model is proposed to explain such aggregationassociation behavior of the poly(AAm-co-AN) copolymer depending on the AN Contents and concentration of the solutions. T2 - Berliner Chemie Symposium & Chemie in Praxis 2016 CY - Berlin, Germany DA - 12.04.2016 KW - Polymer KW - UCST PY - 2016 AN - OPUS4-35804 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Caldeira, Rui T1 - Verbesserung der Empfindlichkeit von Ferroelektret-Empfängern für Luftultraschall-Prüfung N2 - Der immer steigende Bedarf nach Prüfungsverfahren von Verbundwerkstoffen eröffnet die Möglichkeit von Prüfverfahren mittels luftgekoppelten Ultraschalls. Die Steigerung der Empfindlichkeit der Luftultraschall-Wandler erhöht deren Einsatzbereich. Die größte Herausforderung des Verfahrens stellt die Impedanzanpassung an die Luft dar. Ende der 1990er Jahre entdeckte man in Ferroelektreten (geladenen zellulären Polymeren) das Potential zur Lösung dieser Problematik. Geladenes zelluläres Polypropylen, mit einer geringen akustischen Impedanz als bei den meist verwendeten piezoelektrischen Materialien, bietet eine deutlich bessere Anpassung an die Luft. Sein piezoelektrisches Verhalten mit einem piezoelektrischen Koeffizient d33 von 200-800 pm/V ähnelt dem von piezoelektrischen Keramiken. Grund für dieses Verhalten sind die polarisierten Zellen, die eine permanente Ladung erzeugen. Die permanente Ladung erzeugt ein starkes elektrisches Feld in der Folie. Eine auf die Oberfläche einwirkende Kraft staucht die Zellen, wodurch sich die eingeschlossenen Ladungsträger im Verhältnis zueinander bewegen. Durch diese Potential- Verschiebung entsteht eine Ladung auf der Oberfläche. Mit angelegter Vorspannung kann die Empfindlichkeit des Wandlers kontrolliert werden, indem die vorgegebene Polarisierung temporär unterstützt oder reduziert wird. In diesem Beitrag ist die Entwicklung eines Ultraschallempfängers aus geladenem zellulärem Polypropylen mit Anwendung der Vorspannung dargestellt. Eine Verbesserung des Signal-Rausch-Abstands bei der Durchschallung eines Testkörpers um 12-15 dB wurde erreicht. T2 - DGZfP-Jahrestagung CY - Koblenz, Germany DA - 22.5.2017 KW - Ultraschall KW - Luftultraschall KW - Ferroelektret KW - Prüfung KW - Sensor PY - 2017 AN - OPUS4-40880 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosignuolo, F. T1 - A comparison between empirical models and FDS simulation to predict the ceiling gas temperature distribution in a tunnel fire N2 - A comparison between the results obtained from a Computational Fluid Dynamic (CFD) simulation and from the application of an empirical formula for determining the temperature distribution inside a tunnel in case of fire is presented. The temperature is measured and calculated at different distances from the location of the fire and at different time intervals. The fire considered varies with time following a time-heat release rate curve which has a parabolic growing phase, a constant period and a linear decay. The comparison reveals differences in the results. The temperatures calculated with the empirical formula resulted higher than the temperatures obtained by means of the CFD simulation. A list of possible reasons for this limited correspondence is also presented and commented. A proposal for further studies to better define the limitations of both the procedures and to define the influence of each parameter involved is finally presented. T2 - World Tunnel Congress 2017 – Surface challenges – Underground solutions CY - Bergen, Norway DA - 09.06.2017 KW - CFD KW - Fire KW - Tunnel KW - Design Fire PY - 2017 AN - OPUS4-40655 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisermann, René T1 - C-OTDR Based Quasi-distributed Vibration Sensing Using High Scattering Fiber Segments - Performance for Subhertz Dynamic Strain Events N2 - Distributed vibration sensing (DVS) based on Rayleigh single pulse optical time-domain reflectometry (C-OTDR) is an attractive and robust method for a variety of sensing applications including geosensing. A key issue for the usability of DVS systems is the signal-to-noise ratio (SNR) and thus the feasibility to demodulate a measured signal, especially in the case of small dynamic strain amplitudes. We present a simple method to locally boost the sensitivity of DVS using pairs of fs-laser-written strongly scattering fiber segments. T2 - EAGE/DGG Workshop on Fibre Optic Technology in Geophysics CY - Potsdam Germany DA - 31.03.2017 KW - C-OTDR KW - Distributed acoustic sensing KW - Quasi-distributed vibration sensing PY - 2017 AN - OPUS4-40629 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Uhlmann, E. T1 - Cutting tools made from niobium carbide N2 - The Federal Institute for Materials Research and Testing (BAM) and the Institute for Machine Tools and Factory Management (IWF) of the Technical University Berlin analyzed the suitability of various NbC types in comparison to tungsten carbide (WC) for use as a tool in cutting processes. The focus was placed on the optimization of the functional profile of NbC-based cutting materials with reproducible industrial production. T2 - 19. Plansee Seminar CY - Reutte, Austria DA - 29.05.2017 KW - Niobium carbide (NbC) KW - Tungsten carbide (WC) KW - Cutting material PY - 2017 AN - OPUS4-40515 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Palkowski, Carsten T1 - EU Energy Label for heating appliances - Optimization of test standards for heat pumps N2 - The European Standards EN14511 and EN14825 are representing standardized procedures for testing the energy efficiency of heat pumps and air conditioners with electrically driven compressors for both space heating and cooling. In this study, these standards are analyzed and validated. It was figured out that the currently used methods implicate high complexity and high financial effort. In order to clarify the circumstances and to identify the deficits more in detail, a round robin test with independent and accredited laboratories was initiated. The aim is to develop an optimized test procedure that improves the feasibility of the testing procedure and finally its application. This study should lead to a repeatable and reproducible testing procedure, which is also compatible with the state of the art in heat pump technology and real operation conditions. T2 - ECEEE Summer Study 2017 CY - Hyerès, France DA - 29.05.2017 KW - Heat pump KW - Energy efficiency KW - Test method standard optimization KW - Energy labelling KW - Climate change PY - 2017 AN - OPUS4-40801 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rühlmann, Madlen T1 - Design of an online-analysis technique for the determination of major and minor nutrients in soils using DP-LIBS N2 - LIBS (laser-induced breakdown spectroscopy) is known as a fast and simultaneous multi-element analysis with little or no sample preparation. Because of that, over the last few years there has been a growing interest in applications of LIBS in the field of agriculture. As part of the National Research Strategy BioEconomy 2030 the German Federal Ministry of Education and Research (BMBF) started an innovation programme called BonaRes. BonaRes consists of ten interdisciplinary research project as-sociations which are dealing with soil as a sustainable resource for the bio-economy. One of these research projects is I4S (intelligence for soil) which has the goal to develop an integrated system for site-specific soil fertility management. This system includes a sensor platform, which contains different sensors, like XRF, VIS-NIR, Gamma and LIBS. The main task of LIBS measurements in this project is the real time determination of the elemental contents of major and minor nutrients in soils, like calcium, magnesium, potassium. For this purpose, a special setup has been designed. The sample uptake operates with the help of a rotatable sample plate, on which the loose soil sample can be placed in form of a track. The sample plate circulates with different velocities to simulate the application on the field. To provide a higher intensity and a better re-producibility of the obtained signal, a double-pulse Nd:YAG laser (1064 nm) was used. In order to minimize dust formation from the soil during the operation of the laser, a dust removal by suction has been integrated When using relative methods such as LIBS, a suitable calibration curve is needed for absolute quantification. Within the I4S project a large number of soil samples from different testing grounds with known data of chemical composition, texture etc. is available. For the first calibration curves seven soil samples from different grounds in Germany were prepared as reference materials and four certified reference materials from China and Canada were purchased. With the help of these reference materials, calibration curves for different elements were initially calculated based on internal standard addi-tion. Copper was used as internal standard because of its low concentration in soils. The complex matrix of soils, as well as the influence of moisture and grain size in soils makes the absolute quantification by LIBS challenging. To overcome these influences, a calibration curve based on multivariate analysis was generated. Therefore, baseline correction on the second derivative with a Savitzky-Golay filter was followed by a partial least squares regression (PLSR). Multivariate analysis leads to noise reduction and neglection of interfering signals. Therefore, a better correlation between signal intensity and nutrient concentration is observed and a robust calibration curve is obtained. T2 - 9. Euro-Mediterranes Symposium LIBS CY - Pisa, Italy DA - 11.06.2017 KW - LIBS KW - Soil KW - Matrix KW - Multi-element PY - 2017 AN - OPUS4-40807 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gebbers, R. T1 - Laser-induced breakdown spectroscopy (LIBS) for efficient quantitative determination of elemental plant nutrients in soils: A contribution to precision agriculture N2 - One important aim of precision agriculture (PA) is the optimization of crop growth by means of site-specific measures, e.g. fertilizer application. Thus, PA should contribute to a resource efficient and ecofriendly soil management. Due to the expenses associated with traditional methods of soil analysis, requiring sample collection and laboratory analysis, PA technologies are still not in widespread use. Therefore, the aim of the project “I4S – Integrated System for Site-Specific Soil Fertility Management” is the development of a field-deployed, sensor-based analysis system offering rapid, cost-effective and spatially-resolved fertilizer recommendations. In this system, laser-induced breakdown spectroscopy (LIBS) could be ideally suited to assessing elemental nutrient contents of soils. In addition to low cost, durability and small size, a reliable quantification procedure is a crucial requirement for such a system. However, the texture as well as the composition of the soil can affect the spectra. This matrix dependence is the key challenge to be addressed in the application of LIBS for soil evaluation. The focus of this work was the establishment of a LIBS method for soil analysis in a laboratory environment for future field application. Natural soil samples of various origins, textures and compositions were used to characterize the matrix dependence of the LIBS spectra. Reference samples were prepared by adding defined amounts of the target elements to the soils (standard addition). Signals not superimposed by peaks of other elements were identified for each element. The reference samples also provided calibration curves for the respective soil type when the initial concentrations in the soils were taken into account. Additionally, the common laboratory method ICP-OES following aqua regia extraction was used to obtain reference values. Various approaches of calibration free evaluation of the data were also evaluated. In addition to traditional single-pulse experiments, the advantages of dual-pulse LIBS in relation to signal intensity, reproducibility as well as overcoming the matrix dependence of soil spectra were investigated. These methods were subsequently applied to validation samples collected on a dense grid within a field. T2 - Pedometrics 2017 CY - Wageningen, The Netherlands DA - 26.06.2017 KW - LIBS KW - Precision KW - Agriculture KW - Soil KW - Site-specific PY - 2017 AN - OPUS4-40808 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grunewald, Thomas T1 - Untersuchung zur statistischen Zündwahrscheinlichkeit mechanisch erzeugter Funken im explosionsgefährdeten Bereich N2 - Unsere bisherigen Untersuchungen lassen sich in zwei Stufen unterteilen. Eine erste Analyse /L-13/ ermittelte für alle Explosionsgruppen den Zusammenhang zwischen Schlagenergie, Ge-mischzusammensetzung, Oberflächenrauhigkeit der Schlagplatte und Zündwahrscheinlichkeit, wobei als Schlagenergie die Werte W = 3 Nm, 10 Nm und 190 Nm dienten. Die aktuelle Analyse hat die statistische Erfassung von Verhalten und Zündfähigkeit einzelner abgetrennter Partikel unter dem Einfluss von Schlagenergie und Gemischzusammensetzung zum Ziel Es besteht ein direkter Zusammenhang zwischen der kinetischen Schlagenergie und der Zünd-wahrscheinlichkeit: Je höher die kinetische Schlagenergie, umso höher die Wahrscheinlichkeit zur Erzeugung zündfähiger mechanischer Stahl-Schlagfunken. Für die Gemische der IEC-Explosionsgruppe IIC bedeutet das eine signifikante Zunahme der Zündwahrscheinlichkeit durch Stahl-Schlagfunken von 1,5 % (für Wasserstoff) bis 3,0 % (für Ace-tylen) bei W = 10 Nm auf 100 % bei W = 190 Nm. Bei Ethylen beträgt die Zunahme der Zünd-wahrscheinlichkeit von 0 % auf 16,6 % und bei Propan von 0 % auf 6,7 %. Diese Abhängig¬keiten sind in Abb. 1 dargestellt. Unterhalb einer kinetischen Schlagenergie von 3 Nm konnten mit der angewendeten Schlagki-nematik, Schlaggeometrie und Werkstoffen keine zündfähigen mechanisch erzeugten Stahl-Schlagfunken erzeugt werden. T2 - 9. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit CY - Hochschule Anhalt (FH), Köthen, Germany DA - 06.11.2008 KW - Schlagfunken KW - Mechanisch erzeugte Funken KW - Nichtelektrischer Explosionsschutz KW - Mechanischer Explosionsschutz KW - Zündquellen PY - 2008 AN - OPUS4-40796 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisermann, René T1 - Reducing sensitivity fading in C-OTDR by use of enhanced scattering fiber segments N2 - We have shown that for C-ODTR based DAS two UV-inscribed scattering segments within an optical fiber have a significant influence on the local sensitivity Fading characteristics. This method was experimental proven to be suitable for distributed dynamic strain measurement in a thermally unstable environment. Signal-to-noise ratio analyses for detecting a signal peak within the time-dependent spectra were performed. Results show an increase in SNR and additionally that the occurrence of total loss of sensitivity (SNR <1) could be decreased by a factor of six when compared to an untreated standard fiber. T2 - 25th International Conference on Optical Fiber Sensors CY - Jeju-City, Jeju, Republic of Korea DA - 24.04.2017 KW - Coherent Rayleigh OTDR KW - Distributed acoustic sensing KW - Distributed vibration sensing KW - Fiber sensors KW - Quasi-distributed sensing KW - Rayleigh scattering PY - 2017 AN - OPUS4-40643 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Huang, S. G. T1 - Effect of carbon content on the microstructure and mechanical properties of NbC-Ni based cermets N2 - The aim of this work was to correlate the carbon content in NbC-Ni starting powders with the resulting microstructure, hardness and fracture toughness of Ni-bonded NbC cermets. T2 - 19. Plansee Seminar CY - Reutte, Austria DA - 29.05.2017 KW - Cermet KW - Liquid phase sintering KW - Microstructure KW - Hardness KW - Carbon PY - 2017 AN - OPUS4-40647 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Genga, R. M. T1 - Microstructure and wear behavior of improved NbC cermets for (BS-1452) grey cast iron machining N2 - Tungsten carbide (WC) and cobalt (Co) based cermets are the most successful commercial cermets beacuse of the good combination of physical, mechanical and behavioral properties. Niobium carbide (NbC) has good mechanical and physical properties, such as high hardness, very high melting point and low density. SPS refined the NbC grains and increased the hardness, while substitution of Co with Ni improved the fracture toughness. T2 - 19. Plansee Seminar CY - Reutte, Austria DA - 29.05.2017 KW - Cermets KW - Grey cast iron machining KW - Tungsten carbide (WC) KW - Niobium carbide (NbC) KW - Wear PY - 2017 AN - OPUS4-40603 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Urbanczyk, M. T1 - Influence of pigments on phototransformation rates of biocides in paints N2 - Biocides are commonly applied to building materials such as renders and paints in order to protect them from microbial spoilage. Since the building materials are commonly exposed to weathering conditions, biocides incorporated within the material matrices tend to leach out during the rain events. Moreover, photodegradation processes play an important role in the fate of biocides, due to the exposure to natural sunlight. Leaching of biocides and their moderate persistence, indicate that photodegradation products of biocides can also be found as environmental contaminants in runoff waters. In this study we investigated the photodegradation of four commonly used biocides (carbendazim, diuron, octylisothiazolinone and terbutryn) in four different paint formulations with selected pigments (red, white, black and one artificial, not commercial pigment-free formulation for comparison). As pigments interact with the spectrum of the incoming light, the effect of pigments on photodegradation rates was assumed to be relevant. Samples were prepared by painting 2 layers of selected paints on glass plates. The dry paint samples were exposed to UV light for designated time periods ranging from 0 h to 1056 h of total exposure time in a commercial UV-Test® Fluorescent / UV Instrument (Atlas Material Testing Technology, Illinois, USA). The applied energy was 1.2 W/m2. The black panel temperature was established at 40 ºC. The radiant energy from the UV fluorescent lamps was concentrated in the wavelength region at 351 nm and below. All samples were prepared in triplicates. After irradiation, paint samples were removed from glass carriers and extracted with methanol. The remaining biocide concentrations as well as the amounts of photodegradation products were analysed with the use of liquid chromatography coupled to mass spectrometry. The transparent, pigment-free formulation was the most vulnerable to light exposure, a visible colour change from white to yellow was observed after 1056 h of irradiation. Diuron, octylisothiazolinone and terbutryn degraded from pigment-free formulation following first-order degradation kinetics. A decrease of carbendazim was also observed. The remaining formulations showed similar degradation patterns for all analysed biocides. All paints showed degradation for octylisothiazolinone with 3-octyl-2(3H)-thiazolone being the main product for red, white and black pigment paint. N-octylacetamide and N-octyloxamic acid were dominant in the pigment-free formulation. Terbutryn sulfoxide was the main degradation product of terbutryn in case of the white paint, while other pigments showed higher concentrations of desbuthyl-2-hydroxy-terbutryn and desethyl-2-hydroxy-terbutryn. A determination of photodegradation in terms of pigment type, measured light spectra and intensity as outlined in this study, could provide a basis for establishing a quantitative description of the fate of biocides in paints, which has significance not only in terms of environmental science, but also could provide a guideline for developing new and effective products. T2 - 16th International conference on chemistry and the environment CY - Oslo, Norway DA - 18.06.2017 KW - Biocide KW - Photodegradation KW - Pigment PY - 2017 AN - OPUS4-40770 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riaz, Muhammad T1 - Effect of modification on acidity and porosity of natural zeolite clinoptilolite N2 - 1. Introduction Catalytic processing of heavy feedstock can meet the increased demand of energy up to a great extent. It requires the application of acidic catalysts like zeolites. However, the used synthetic catalysts are difficult to recover and reuse and are mostly spent. The use of natural zeolite as spent catalysts may open new perspectives in the chemical use of heavy feed feedstock by chemical conversion. Natural zeolites are not expensive, widely available and environment friendly. Clinoptilolite is a natural, most abundant medium pore size zeolite, consisting of 2-deminsional pore system containing of oxygen-8- membered and oxygen-10-membered rings.Although clinoptilolite is porous and can be acidified by ion exchange or acid treatment. Samples were characterized by XRD regarding crystallinity and phase composition. The acidity was studied by ammonia-TPD measurements and 1H solid state MAS NMR as well as REDOR experiments. Structure and structural changes caused by applied modifications were studied by 27Al- and 29Si MAS NMR measurements and thermal analysis. 2. Experimental Part The ion exchange behaviour of natural zeolite tuff contained ca. 90 ma. % of clinoptilite was studied in 0.1 and 0.5 M ammonium nitrate solution and for comparison with HCl solution of similar concentration. The activation temperature was varied between 300-600°C.The catalytic test was performed using ca. 0.2 g of the catalyst and ca.10g of the aldehyde and alcohol using toluene as solvent and under reflux. Reaction water was removed via a by-pass. 3. Results and discussion The experiments show that a part of the cations of clinoptilolite readily exchange with ammonium ions and protons supplied by acid treatment. Substitution of the compensating cations by NH4+ followed by calcination and HCl treatment does not produce structural changes in the original material, but it opens the channels and increases acidity and thermal stability. Calcination at higher temperature and exchange with concentrated acid has a more severe impact on the clinoptilolite structure dealumination as indicated by the appearance of 5- and 6-fold coordinated aluminum. Catalytic activity of sample is related to the surface acidity. The presence of acidic protons of medium to strong strength is confirmed by ammonia-TPD and proton NMR measurements. 4. Conclusions Acidic natural clinoptilolite catalysts prepared via ammonium exchange followed by calcination and acid treatment shows a positive influence on acidity and porosity. Modification creates hierarchical micro-nano porosity. The specific surface area varies between ca. 45 m2/g and 245 m2/g. T2 - Catalysis summer school-UK CY - Liverpool, UK DA - 17.07.2017 KW - Natural Zeolite Clinoptilolite PY - 2017 AN - OPUS4-40689 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rappsilber, Tim T1 - Design fires with mixed-material burning cribs to determine the extinguishing efficacy of compressed air foams (CAF) N2 - The joint research project AERIUS (BMBF), is working to determine the effectiveness and efficiency of CAF in comparison to pure water, water with foaming agents and nozzle-aspirated foams in an extensive series of firefighting experiments. The poster deals with a series of extinguishing tests with mixed-material burning cribs. T2 - 12th International Symposium on Fire Safety Science CY - Lund, Sweden DA - 12.06.2017 KW - CAF KW - Foam KW - Crib KW - Extinguish KW - Fire PY - 2017 AN - OPUS4-40690 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Muhammad, Riaz T1 - Effect of the ammonium ion exchange and HCl treatment on the acidity of natural zeolite clinoptilolite N2 - Clinoptilolite is a natural, medium pore size, zeolite. It contains a 2-deminsional pore system containing of oxygen-8- membered and oxygen-10-membered rings. It is one of the most abundant natural zeolites. Clinoptilolite has a crystalline structure showing unique ion exchange and sorption properties. It is mainly used as ion exchanger and adsorbent for removal of toxic elements and compounds from the environment. The use of natural zeolite as spent catalysts may open new perspectives in the chemical use of heavy feed feedstock by chemical conversion. Natural zeolites are not expensive, widely available and environment friendly. Clinoptilolite is the most abundant natural zeolite. Although clinoptilolite is a potential acid catalyst, reports on its application in catalysis are limited so far. This contribution deals with the modification of the acidity of the natural zeolite clinoptilolite, the characterization of the acid sites and the catalytic activity in the Brønsted acid catalyzed acetalization of benzaldehyde with butandiol-1,3. The samples were acidified by via ammonium-ion exchange followed by calcination and acid treatment. The obtained catalysts were characterized by XRD regarding crystallinity and phase composition. The morphology was studied by TEM images The acidity was studied by ammonia-TPD measurements and 1H solid state MAS NMR as well as REDOR experiments. Structure and structural changes caused by applied modifications were studied by 27Al- and 29Si MAS NMR measurements and thermal analysis. The ion experiments show that a part of the cations of clinoptilolite readily exchange with ammonium ions and protons from HCl treatment. The NMR results give first hints for a relation of the catalytic conversion with the presence of 5-fold coordinated aluminum. The results will be discussed in terms of a collaborative action of Brønsted acid sites and 5-fold coordinated aluminum. T2 - Deutsche Zeolith Tagung-2017 CY - Frankfurt Germany DA - 01.03.2017 KW - Natural zeolite clinoptilolite PY - 2017 AN - OPUS4-40684 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riaz, Muhammad T1 - Influence of the acidic, thermal, and water vapour treatment on the catalytic performance of acidic hierarchical structured clinoptilolite N2 - Clinoptilolite is a natural, medium pore size zeolite. It contains a 2-deminsional pore system consisting of oxygen-8- membered and oxygen-10-membered rings. It is one of the most abundant natural zeolites. It is mainly used as ion exchanger and adsorbent for removal of toxic elements and compounds from the environment. Although clinoptilolite is microporous and can be acidified by ion exchange or acid treatment and a potential catalyst, reports on its application in catalysis are limited so far. This contribution deals with modification of a natural zeolite clinoptilolite, and the study of the influence of the textural and acidic properties on the catalytic performance in the acid catalyzed acetalization of bezaldehyde with butandiol-1,3 and the more demanding etherification of glycerol with t-butanol or isomerization of n-hexane. The samples were acidified by via ammonium-ion exchange followed by calcination and acid treatment. Samples were characterized by XRD regarding crystallinity and phase composition, FTIR, and N2-adsorption for porosity. The morphology was studied by TEM images. The acidity was studied by ammonia-TPD measurements and 1H solid state MAS NMR. Structure and structural changes caused by applied modifications were studied by 27Al- and 29Si MAS NMR measurements and TRAPDOR experiments as well as thermal analysis. The studied natural zeolite tuff contained ca. 90 ma.-% of clinoptilolite. The ion exchange behavior was studied with ammonium nitrate solution and for comparison with HCl solution of similar concentration. The cation exchange was followed by AES. The activation temperature was varied between 400-600°C. The catalytic test was performed e.g. using ca. 0.2 g of the catalyst and ca.10g of the aldehyde or alcohol using toluene as solvent and under reflux. Reaction water was removed via a by-pass. The isomerization of n-hexane was performed in a fall stream reactor at elevated temperature at gas phase. Water vapour saturated air was passed over clinoptilolite samples at elevated temperature for different time. The ion exchange experiments shows that ca 45% of the cations of clinoptilolite readily exchange with ammonium ions and protons supplied by acid treatment. However, exchange with the acid has a more severe impact on the clinoptilolite structure. More severe treatment times leads to a loss of activity in terms of acetal formation. Sample show all high conversions after 4 h of reaction, but show markedly differences after short reaction times. The presence of acidic protons of medium to strong strength is confirmed by ammonia-TPD and proton NMR measurements. The sample activation causes a partial dealumination as indicated by the appearance of 5- and 6-fold coordinated aluminum. Interestingly, the NMR results give first hints for a relation of the catalytic conversion with the amount of 5-fold coordinated aluminum. The results will be discussed in terms of a collaborative action of Brønsted acid sites and 5-fold coordinated aluminum. Modified clinoptilpolite is highly active in acid catalyst acetalization of aldehydes, isomerization of n-hexane and etherification of glycerol with t-butanol. Acidic natural clinoptilolite catalysts prepared via ammonium exchange followed by calcination and acid treatment shows a positive influence on acidity and porosity. Modification creates hierarchical micro-nano porosity. The specific surface area varies between ca. 45 m2/g and 257 m2/g. T2 - EUROPA CAT 2017 CY - Florence Italy DA - 27.08.2017 KW - Natural Zeolite Clinoptilolite PY - 2017 AN - OPUS4-40687 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Turski Silva Diniz, Analice T1 - Decomposition and dripping under fire: The battle between glass fibres and melamine cyanurate in polyamide 6 N2 - Since thermoplastics’ melt dripping is connected directly with their ability to make a fire scenario more or less dangerous, it has been investigated in greater detail. However, it has still remained a question mark in the field of the flammability of plastics. Once it was recognized that each polymer has its own dripping characteristics under equal, standardized conditions, efforts were made to better understand the specifics of this phenomenon. Several different polymers were tested under fire in order to study the relations between molecular structure and the dimensions of the drops. In particular, the relationship between the polymer decomposition mechanisms and their drops was investigated. New quantification methods helped to study drop yields from materials upon exposure to fire or heat. Polymers and flame-retarded polymers showed variations in dripping, indicating that this behaviour is a combination of melting and the decomposition of the polymer and additives. From this, the main material characteristics that influence dripping under fire were highlighted: temperature, viscosity and decomposition. As Polyamide 6 (PA6) is a thermoplastic polymer used in a wide range of products, including electronic devices, interest in enhancing the fire retardancy of this type of polymer is high. Melamine cyanurate (MCA) has been reported to be the most important nitrogen-containing flame retardant used in polyamides, and is especially attractive because it is halogen-free. In addition, glass fibres (GF) are commonly used in PA6 to improve its mechanical properties, mainly for engineering applications. In order to contribute to the scientific discussion on dripping behaviour, this work reports on an experimental investigation of a set of PA6 materials compounded with different amounts of MCA and GF content. In UL 94 conditions, dripping quantifications were carried out during First Ignition (FIG) and Second Ignition (SIG). These flammability tests were recorded with an infrared camera. The thermal decomposition and rheological properties of all of the materials and collected drops were evaluated. Dripping behaviour under fire is controlled by the polymer, the flame retardant and the reinforcement filler. Pure PA6 achieved a V-2 classification in UL 94 test, PA6/MCA V-0, PA6/GF HB, and the flame-retarded composites are also classified as V-2. In spite of these classifications, dripping behaviour observed during the flammability test was distinct for each type of samples, as described in the paper. As for decomposition, the PA6 drops collected had a starting decomposition temperature lower than pure PA6 (Figure 1.a), indicating partly decomposed PA6. PA6/MCA shows a clear, early decomposition step for MCA in thermogravimetry, which vanishes for the collected PA6/MCA drops, proving the complete decomposition of MCA during the UL 94 test. In PA6, glass fibres acted as inert filler, prolonging the time to dripping, and leading to a constant flaming flow (Figure 1.b) in the samples with high concentrations. When GF and MCA were combined in PA6/GF/MCA, the modes of action of both the GF and the MCA interfered with each other (Figure 1.c). GF reduces the effectiveness of MCA and tends to force its main action into the condensed phase. There the dripping behaviour is well restricted through the formation of thermally stable residues. Rheological properties and scanning electron microscopy images are consistent with these results. FIGURE 1. Thermal decomposition of samples and drops of: a) PA6, b) PA6/30GF, and c) PA6/20GF/20MCA T2 - FRPM 2017, 16th European Meeting on Fire Retardant Polymeric Materials CY - Manchester, UK DA - 03.07.2017 KW - Melt dripping KW - UL 94 KW - Polyamide 6 KW - Flammability PY - 2017 AN - OPUS4-40959 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Battig, Alexander T1 - Hyperbranched Polyphosphoesters, -di/amidates and –amides as Novel Flame Retardants for Epoxy Resins: Understanding the Role of Chemical Composition N2 - The use of phosphorus-containing flame retardants as a viable alternative to their widely used halogen-containing counterparts has been the source of much recent research. As the search for an effective flame retardant for specific polymeric systems continues, a new class of flame retardants have shown promising results, namely hyperbranched polyphosphoesters and their derivatives. These macromolecules promise to combine the effects of complex, hyperbranched structures with the flame retarding effects of phosphorus, enabling a high miscibility and processability, as well as a lower impact on glass transition temperature and decreased diffusion from the polymer matrix. These and other functions enable them to act as multifunctional additives. In recent times, phosphorus-based hyperbranched materials and their efficacy as flame retardants have been described in literature. Often, the inclusion of nitrogen atoms into the chemical surrounding of phosphorus has lead to reports of increased flame retarding performance through synergistic effects. However, a comprehensive study of the relationship between nitrogen and phosphorus in hyperbranched polymers is lacking. The aim of this work is to determine the efficacy of novel, phosphorus-based hyperbranched polymers compared to other, commercially available, previously studied flame retardants and to investigate the molecular flame retarding mechanism of these complex structured macromolecules. Among one of the key aspects here is the modification of the O:N ratio of the phosphorus-containing repeating units of these hyperbranched polymers. The newly described synthesis route yields trifunctional monomers of the desired composition, which undergo an A2+B3-type polymerization via radical thiol-ene reactions, producing polyphosphoesters, -amidates, -diamidates, or -amides, respectively. By precisely tailoring the nitrogen and oxygen ratio in the chemical surrounding of phosphorus, a more comprehensive picture of the structure-property relationship of these materials may be gained. Furthermore, by adjusting the aromaticity of the hydrocarbon moieties in these trifunctional monomers, an optimization of flame retarding properties, such as increased charring, is aimed to be achieved. Additionally, the trifunctional monomers themselves act as low molecular weight fire retardants; therefore, by comparing the performance of these monomers to their high molecular weight, hyperbranched, polymeric counterparts, an understanding of the role of molecular architecture in designing a more effective flame retardant can be gained. Finally, several epoxy resin matrices, common in high-tech industrial applications, are investigated in the interest of comprehending the interaction between these novel hyperbranched flame retardant additives and their surrounding polymeric matrix. In order to determine the flame retardancy mechanism of these materials, a multi-methodological approach is selected, thus offering a high volume of correlating data. Using Fourier-transform infrared spectroscopy (FTIR) coupled with thermogravimetric analysis (TGA), as well as pyrolysis combustion flow calorimetry (PCFC), provides evidence of mass loss processes, their respective decomposition products, and the heat released by volatiles in the gas phase during pyrolysis, while hot-stage FTIR offers information of the decomposition products occurring in the condensed phase. Limiting oxygen index (LOI) and UL-94 help to quantify and categorize the materials’ flammability, while the use of a cone calorimeter offers valuable insight into the fire behavior in forced flaming conditions, providing heat release rates, smoke and CO/CO2 production, amount of residue, and other important indices. Finally, the use of differential scanning calorimetry (DSC) provides information of material properties such as glass transition temperatures, and the implementation of blooming tests serves to examine the reduction of molecular mobility in the matrix. By varying the architecture of the flame retardants – in the O:N ratio of the chemical surrounding of phosphorus and in the aromatic composition of the monomers’ hydrocarbon moieties – and by comparing low versus high molecular weight species in varied epoxy resin matrices, as well as through the use of a multi-methodological approach, new insight into the use and the mode of action of these components as flame retardants for modern materials can be won. T2 - FRPM 2017, 16th European Meeting on Fire Retardant Polymeric Materials CY - Manchester, UK DA - 03.07.2017 KW - Hyperbranched polymer KW - Phosphoester KW - Phosphor(di)amidate KW - Phosphoramide KW - Flame retardant KW - Epoxy resin PY - 2017 AN - OPUS4-40948 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gómez-Fernández, S. T1 - Effect of the combined use of layered double hydroxides, lignin and phosphorus containing polyol on the fire behaviour of flexible polyurethane foams N2 - Lignin has recently attracted the attention of the scientific community as a consequence of the potential depletion of fossil resources, being the most abundant biopolymer on earth after cellulose. Its industrial appeal lies on its renewability, facilitating the switch from fossil resources to environmentally friendly alternatives in terms of energy and chemicals production, materials engineering, and so on; and also on its abundant availability, since large amounts of lignin are obtained as a byproduct of the pulp and paper industry. Nevertheless, the main handicap of lignin consists on its variable structure, as it depends on the vegetable species of origin and on the production process from which it is isolated. On the other hand, the biggest drawback of flexible polyurethane foams is represented by their bad demeanor against fire conditions. The use of effective halogenated flame retardants is more and more restricted due to their toxicity and their contribution to the destruction of the ozone layer. Latest efforts in improving this behavior have been focused on the synergy of different additives containing phosphorus and nitrogen and on the use of intumescent flame retardants. Lignin’s high carbon content and its phenolic crosslinked structure makes it the perfect candidate for addressing this issue. Consequently, this work is focused on the effect of an industrially available lignin –softwood kraft lignin derived from southern pine- on the flame retardant properties of flexible polyurethane foams. Furthermore, seeking to improve the fire performance of these foams, the combined effect of lignin (L), layered double hydroxides (LDH) and a phosphorus containing flame retardant polyol (E) was also studied. Water blown flexible polyurethane foams (PUF) were prepared using a polyether polyol and toluene diisocyanate (TDI) by one-shot free-rise method. A series of foams containing 5% by weight of lignin, 3 parts per hundred of polyol (pphp) of carbonate intercalated Mg-Al layered double and 5 pphp of a commercially available flame retardant (a phosphorus containing polyol) were prepared in order to study the effect on the properties of their introduction alone or in conjunction into the PUF formulation. For this purpose, different characterization techniques such as thermogravimetric analysis, cone calorimetry and limiting oxygen index were performed. The high char residue obtained from the thermogravimetric analysis (TGA) of the lignin suggested that lignin could play a determinant role as a charring agent in the prepared PUF, which could be enhanced by the presence of an acid source such as phosphorus. On the other hand, its use in conjunction with LDH could help to improve the cohesion of the formed char layer, protecting more efficiently the underlying foam from combustion. Since the information provided by TGA is limited in terms of analyzing the contribution of lignin in the fire retardant properties of PUF, the potential charring effect of lignin and its combination with LDH and phosphorus containing polyol was furtherly studied by specific assays such as cone calorimeter and limiting oxygen index. T2 - FRPM 2017, 16th European Meeting on Fire Retardant Polymeric Materials CY - Manchester, UK DA - 03.07.2017 KW - Lignin KW - Layered double hydroxides KW - Polyurethane foam PY - 2017 AN - OPUS4-40949 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Martin T1 - Bubbles And Collapses: Fire Phenomena Of Rigid Polyurethane Foams N2 - Rigid polyurethane foams (RPUF) are widely used in industry and daily life because of their outstanding mechanical and thermal insulating properties. While their convenient mechanical characteristics predestine these materials for shock absorption, their low thermal conductivity is responsible for their excellent thermal insulation properties. A principal characteristic affecting not only the use properties, but also the burning behaviour, is the density of RPUF. In case of fire, cellular polymers like RPUF behave differently from bulk materials. The reason for their comparatively high ignitability is the high rate of temperature rise on the surface when exposed to heat, which is due to their cellular structure and characterised as low thermal inertia. The heat build-up on the surface results in a short time to ignition. Therefore foams are able to develop fire and large amounts of smoke within a short period of time. Even though their fire load is quite low because of their low density, their heat release rate is high. These burning properties are not only a consequence of the chemical consistence of such materials, but also a result of their morphology. The aim of the work is to investigate the fire phenomena of RPUF. Characterised by simultaneous physical and chemical processes which interact, depend, and compete with each other, the combustion of RPUF is a highly complex occurrence. Therefore it is necessary to study all aspects in detail. The fire phenomena that were examined are gasification, liquefaction, charring and structural integrity as well as collapse. The melting of cellular polymers and dripping of pyrolysis products, together with the ability to form pool fires, are the main hazards in fires involving foams. Structural collapse via melting or decomposition, or the retention of the foam’s morphology through charring, are the main characteristics of their burning behaviour. Cellular structure is a further important factor influencing the materials’ response to fire, and deserves examination in greater depth. Since the cells in closed-cell foam are filled with the blowing agent used to produce the material, and this blowing agent can be inert (carbon dioxide) or highly flammable (pentane), this component also affects the burning properties and will be investigated. Examination of the influence of the macroscopic morphology, namely the cell size and thickness of cell walls, will contribute to the study. In order to provide comprehensive insight into the processes taking place during combustion, and to elucidate structure-property relationships, a set of foams with systematically varied properties was prepared. RPUF was obtained using water and pentane as a blowing agent. Besides RPUF, a flame-retarded RPUF and rigid polyisocyanurate-polyurethane foam were examined, since these foams are known for their higher stability from a thermodanymic point of view. As a flame retardant active in the gas phase, triethylphosphate was used. Using a multi-methodological approach, the complex interaction of fire phenomena was studied in detail. Cone calorimeter measurements provide insight into fire behaviour under forced-flaming conditions. They were carried out in an horizontal and a vertical orientation to account for the effects of melt flow and dripping. Sample-holders were equipped with glass windows to monitor the materials’ response to forced-flaming conditions with a video camera. Thermocouples were inserted into the specimens, giving information about the temperature gradient in the inside of the sample and the temperature of the pyrolysis zone during combustion. Changes in the morphology and thickness of the pyrolysis zone were examined using a hot-stage microscope, as well as SEM images of cross-sections of quenched foam specimens. The determination of the Oxygen Index and the use of thermogravimetry measurements rounded out the investigation. T2 - FRPM 2017, 16th European Meeting on Fire Retardant Polymeric Materials CY - Manchester, UK DA - 03.07.2017 KW - Foam KW - Polyurethane KW - Polyisocyanurate PY - 2017 AN - OPUS4-40950 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Korwitz, A. T1 - Using the combination of phosphorus polymers and nanocomposite concept to tailor the flame retardancy of polyesters N2 - The potential of nanocomposites, i.e. mixtures of nanoobjects with acceptable distribution in a polymer matrix, with respect to flame retardancy was discovered in an already early stage of nanocomposite reseach. Since then, a variety of nanocomposites often in combination with conventional flame retardants (FRs) and their effect on the burning behavior has been described. Here, we show the application of this concept to enhance the flame retardancy of poly(butylene terephthalate) (PBT) and poly(butylene succinate) (PBS) using suitable phosphorus-containing polyesters as FR. The materials studied were prepared by melt compounding in a twin screw extruder using either a mixture of polymer matrix, phosphorus polymer and nanomaterial (direct compounding) or a mixture of a pre-formed batch of phosphorus polymer with nanomaterial and the polymer matrix (batch compounding). The second method has been shown to be very effective if batches prepared by in-situ nanocomposite synthesis via melt transesterification polycondensation were employed. Modified organoclay (montmorillonite, OMMT) as well as multiwalled carbon nanotubes were used as nanoobjects. Organic modification of MMT resulted in better exfoliation and distribution within the poylmer matrix than observed with pure sodium MMT. However, modification with phosphorus-containing modifiers dis not support exfoliation due to high interaction between modifier and clay. Analysis of the in-situ prepared nanocomposites of OMMT (Cloisite 30B) with the phosphorus polyester PET-P-DOPO by thermogravimetry, FTIR and pyrolysis-GC/MS showed that OMMT did not alter the principal decomposition pathway of the polyester, but shifted the onset of decomposition to lower temperature (due to the fast decomposition of the tertiary ammonium compound) and increased the amount of char. The fire behavir as observed by microscale combustion calorimetry (MCC) was altered and resulted in significant decrease of heat release capacity. In-situ prepared batches of the phosphorus polyester PET-P-DOPO with 20 wt.-% OMMT and with MWCNT (1 wt.-%) were blended with PBT in the ratio 25/75 wt/wt to achieve a phosphorus concentration of 1.5 wt.-%. The nanocomposites were injection molded into plates for cone calorimeter measurements and examined using 50 kW/m2. In all samples, a reduction of toral heat evolved and total heat evolved/total mass loss (THE/TML) was observed. Addition of OMMT improved the char, which was even more pronounced in combination with PET-P-DOPO as illustrated in Figure 1. Blends containing PET-P-DOPO additionally showed intumescence. In all cases, a significant reduction of FIGRAmax was obtained. The addition of nanomaterials (both OMMT and MWCNT) to PBT/PET-P-DOPO reduced the effective heat of combustion (THE/TML) from 1.7 to 1.5 MJ/m2. T2 - FRPM 2017, 16th European Meeting on Fire Retardant Polymeric Materials CY - Manchester, UK DA - 03.07.2017 KW - Nanocomposite KW - Phosphorus polymers KW - Flame retardancy PY - 2017 AN - OPUS4-40951 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gottlieb, Cassian T1 - Material properties and their impact on laserinduced plasmas for concrete analysis N2 - For concrete production aggregates, cement and water are mixed together and after 28 days of hydration a porous and multiphase material is formed. To consider the heterogeneity of concrete a 2D scanning system is used. The coarse aggregates (limit > 2 X d ) can be excluded. laser spot The remaining content is a mixture of flour grains and cement particles (micro heterogeneity). Harmful species like chlorides may penetrate together with water through the capillary pore space. A quantification of Cl regarding to the cement content only (European standard EN 206) is necessary for the damage assessment. A LIBS system operating with a NdCr:YAG laser (pulse energy of 3 mJ, a wavelength of 1064 nm, a pulse width of 1.5 ns, a repetition rate of 100 Hz) and two Czerny-Turner spectrometer (UV and NIR range) have been used. T2 - EMSLIBS Konferenz 2017 CY - Pisa, Italy DA - 12.06.2017 KW - Concrete KW - LIBS KW - Micro-heterogeneity PY - 2017 AN - OPUS4-40938 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Priebe, Nsesheye Susan T1 - A modified cementitious system for sub-Saharan Africa N2 - Supplementary cementitious materials (SCMs) are largely used all over the world. The leading SCMs are fly ash (FA) and slag. However, such materials originate from industries that are not well established in sub-Saharan Africa (SSA). Therefore, it becomes extremely challenging and expensive to build up sustainable cement and concrete. For SSA, agriculture is one of the leading economic sectors. Agricultural by-products such as rice husk ash (RHA), can be a potential binder material beneficial for use in a cementitious system. RHA combined with limestone filler (LSF) is an option that can be practised for rice producing countries in Africa. T2 - PhD Day CY - Berlin, Germany DA - 14.07.2015 KW - Supplementary cementitious materials KW - Rice husk as KW - Cement KW - Concrete KW - Sustainable PY - 2015 N1 - Geburtsname von Priebe, Nsesheye Susan: Msinjili, N. S. - Birth name of Priebe, Nsesheye Susan: Msinjili, N. S. AN - OPUS4-41029 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tütken, T. A1 - Tatzel, Michael A1 - Vogl, Jochen A1 - Rosner, M. T1 - Assessing δ26Mg in bioapatite as proxy for faunivory N2 - Knowledge about feeding behavior is essential to determine trophic interactions and reconstruct predator-prey relationships in modern and past foodwebs. Traditionally, nitrogen isotopes (δ15N) of collagen are used to quantify the ingestion of animal protein, however collagen usually does not preserve over geological time scales. To infer the diet of extinct vertebrates from fossil material more resistant dietary proxies such as Ca and Mg isotopes are needed, which are major elements in the bioapatite of bones and teeth. Magnesium is a bio-essential element that replaces calcium in the bioapatite lattice and bone and enamel δ26Mg values of extant mammals increase systematically along the foodchain [1, 2]. The existing δ26Mg data, however, is scarce, in particular with respect to carnivores, thus still limiting the capability of this dietary proxy to reliably determine trophic differences between plant- and animal-feeders. To better constrain trophic-level effects recorded in Mg isotopes, we analyzed δ26Mg of bioapatite from modern mammals with a focus on faunivores, both carnivores and as yet unexplored insectivores. The trophic level effect of δ26Mg is influenced by the geological substrate which causes isotope variability in δ26Mg of faunal remains between different ecosystems [1, 2]. Therefore, as first-order proxy for sample provenance and to assess potential influences of the bedrock substrate of the animals´ habitats on δ26Mg of bones and teeth, we measured the 87Sr/86Sr on the same specimens. This information will enable us to refine trophic level effects and determine whether δ26Mg can be used to distinguish different faunivores isotopically. This will be of paramount importance for dietary reconstructions of trophic niches in fossil foodwebs. [1] Martin et al. (2014) Geochmica Cosmochimica Acta 130, 12-20. [2] Martin et al. (2015) Proceedings of the National Academy of Sciences 112, 430-435. T2 - Goldschmidt CY - Paris, France DA - 13.08.2017 KW - Magnesium stable isotopes KW - Isotope fractionation KW - Trophic level KW - 87Sr/86Sr KW - Provenance PY - 2017 AN - OPUS4-41535 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bremser, Wolfram T1 - Mathematical and statistical tools for online NMR spectroscopy in chemical processes N2 - Monitoring chemical reactions is the key to chemical process control. Today, mainly optical online methods are applied, which are calibration intensive. NMR spectroscopy has a high potential for direct loop process control while exhibiting short set-up times. Compact NMR instruments make NMR spectroscopy accessible in industrial and harsh environments for advanced process monitoring and control. Within the European Union’s Research Project CONSENS (Integrated CONtrol and SENsing by development and integration of a smart NMR module for process monitoring was designed and delivers online spectra of various reactions. The presented NMR module is provided in an explosion proof housing of 57 x 57 x 85 cm module size and involves a compact spectrometer together with an acquisition unit and a programmable logic controller for automated data preparation (phasing, baseline correction), and evaluation. For reaction monitoring and process control using NMR instruments after acquisition of the FID the data needs to be corrected in real-time for common effects using fast interfaces and automated methods. When it comes to NMR data evaluation under industrial process conditions, the shape of signals can change drastically due to nonlinear effects. Additionally, the multiplet structure becomes more dominant because of the comparably low-field strengths which results in overlapping of multiple signals. However, the structural and quantitative information is still present but needs to be extracted by applying predictive models. We present a range of approaches for the automated spectra analysis moving from statistical approach, (i.e., Partial Least Squares Regression) to physically motivated spectral models (i.e., Indirect Hard Modelling and Quantum Mechanical calculations). By using the benefits of traditional qNMR experiments data analysis models can meet the demands of the PAT community (Process Analytical Technology) regarding low calibration effort/calibration free methods, fast adaptions for new reactants, or derivatives and robust automation schemes. T2 - Advanced Mathematical and Computational Tools in Metrology and Testing XI (AMCTM) CY - Glasgow, UK DA - 29.08.2017 KW - Process Monitoring KW - CONSENS KW - Online NMR Spectroscopy KW - Indirect Hard Modeling KW - Data Analysis PY - 2017 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-416560 AN - OPUS4-41656 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Martin T1 - Development of a material model for the crush of spruce wood N2 - Typical transport packages used in Germany are equipped with wooden impact limiting devices. In this paper we give an overview of the latest status regarding the development of a finite element material model for the crush of spruce wood. Although the crush of wood – mainly in longitudinal direction – is a phenomenon governed by macroscopic fracture and failure of wood fibres we smear fracture and failure mechanisms over the continuous voume. In first step we altered an existing LS-DYNA material model for foams, which considers an ellipse shaped yield surface written in terms of the first two stress invariants. The evolution of the yield surface in the existing model depends on the volumetric strain only. For the use with spruce wood, we modified the existing material model to consider the deviatoric strain for the evolution of the yield surface as well. This is in accordance with the results of crush tests with spruce wood specimens, where the crushing deformation was rather deviatoric for uniaxial stress states and rather volumetric for multiaxial stress states We rate the basic idea of this approach to be reasonable, though other problems exist regarding the shape of the yield surface and the assumption of isotropic material properties. Therefore we developed a new transversal isotropic material model with two main directions, which considers different yield curves according to the multiaxiality of the stress state via a multi-surface yield criterion and a non-associated flow rule. The results show the ability to reproduce the basic strength characteristics of spruce wood. Nevertheless, problems with regularization etc. show that additional investigations are necessary. T2 - ASME PVP 2017 CY - Waikaloa, HY, USA DA - 16.07.2017 KW - Crush KW - Wood KW - Spruce KW - FEM PY - 2017 AN - OPUS4-41617 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oberpaul, Markus A1 - Ngyuen, Mai A1 - Fracowiak, Jochen A1 - Zubeil, Florian A1 - Plarre, Rüdiger A1 - Hammann, Peter A1 - Vilcinskas, Andreas A1 - Gläser, Jens T1 - Exploiding termite nest microbiomes for antibiotic drug discovery using an integrated high throughput Microfluidics/FACS pipeline N2 - Bacterial infections are a global threat to human health1. Especially nosocomial infections with multidrug-resistant Gram-negative bacteria challenge public health systems and endanger successful treatment of patients in various modern medicine applications as e.g. organ transplant. In the last three decades classical approaches failed to find novel chemical scaffolds suitable for the development of antibiotics. Insect microbiomes produce potent antibiotics with low toxicity to eukaryotic cells to defend their hosts against entomopathogenic microorganisms2. In order to exploit insect microbiomes efficiently and to identify novel antibiotic producing bacteria, we implemented an high throughput Microfluidics/FACS (fluorescence-associated cell sorting) cultivation and screening pipeline. Here, we present the technical aspects of our pipeline including downstream processing. This includes genomic fingerprinting of identified producer strains, metabolomic analysis and isolation of natural products. T2 - VAAM Workshop Biology of Bacteria Producing Natural Products CY - Tübingen, Germany DA - 27.09.2017 KW - Termites KW - Antibiotics KW - Microfluids PY - 2017 AN - OPUS4-41831 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Babutzka, Martin A1 - Reinemann, Steffi T1 - Influence of corundum grinding processes on the corrosion behaviour of austenitic stainless steels N2 - The scientific poster shows by means of corrosion testing in combination with surface analytical methods to which degree corundum grinding influences the corrosion behaviour of stainless steel surfaces. The austenitic stainless steel AISI 304 from a consistent heat was used for all investigations to guarantee the same chemical composition and thus no additional influences caused by the material itself. A wide range of different grinding parameters such as pressure, cooling medium and grain size of the abrasive was varied. Thus, comparison of the corrosion behaviour of different surface states and the evaluation of an optimum grinding process using corundum abrasives were possible. The results will contribute to present discussions and give novel impulses for companies in the metalworking industry. T2 - Eurocorr 2017 CY - Prague, Czech Republic DA - 03.09.2017 KW - Korrosion KW - Corrosion KW - Korundschleifen KW - Corundum grinding KW - Nichtrostende Stähle KW - Stainless steels PY - 2017 AN - OPUS4-41896 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sahre, Mario T1 - Electroplated magnetostrictive actuator layer enabling the external diagnosis of strain sensors N2 - Embedded fibre-opticaloptical strain sensors are suitable for structural health monitoring. In order to validate long-term performance (e.g.sensors integrated in airplane wings or wind power turbine blades) an external diagnostics is required. A strain-detecting region of the optical fibre, the fibre Bragg grating (FBG, is encased by a magnetostrictive layer system serving as actuator. For the validation of the correct sensor function, an external magnetic field introduces mechanical strain resulting in a defined shift of the Bragg wavelength. The layer system is realized by acombined PVD /ECD process optimized regarding magnetostrictive and mechanical properties. The long -term stability of layer adhesion and actuator function has been verified. T2 - 12. Thementage Grenz- und Oberflächentechnik (ThGOT) und das 5. Kolloquium Dünne Schichten in der Optik CY - Zeulenroda, Germany DA - 14.03.2017 KW - Magnetostrictive actuator layer KW - PVD /ECD process KW - Magnetostrictive layer KW - Strain sensors PY - 2017 AN - OPUS4-41800 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Thorid T1 - Mehr-Proben-Kleb-Vorrichtung (MPKV) zur Validierung der Klebfestigkeit N2 - Mit der Verfügbarkeit der Mehr-Proben-Prüfung von bis zu 8 Klebverbunden mittels CAT-Technologie (CAT: centrifugal adhesion testing) wurde im Forschungsvorhaben OKTETT ein durchgehendes Mehr-Proben-Konzept zur Validierung der Klebfestigkeit angewendet. Dazu gehört ein universeller Probenteller (Abb.1) zur Mehr-Proben-Handhabung bei Vorbehandlung, Lagerung, Transport und Klebung. Für das Mehr-Proben-Kleben wurde die MSB-Technologie (MSB: multiple sample bonding) unter Verwendung einer instrumentierten hydraulischen Mehr-Proben-Kleb-vorrichtung entwickelt. Damit kann der Klebandruck für bis zu 8 Prüfkörper über einen Drucksensor definiert eingestellt und die gesamte Vorrichtung beim Kleben Temperaturen von bis zu 180°C ausgesetzt werden. T2 - 12. Thementage Grenz- und Oberflächentechnik (ThGOT) und das 5. Kolloquium Dünne Schichten in der Optik CY - Zeulenroda, Gemany DA - 14.03.2017 KW - Zentrifugentechnologie KW - Mehr-Proben-Kleben (MSB) KW - Mehr-Proben-Prüfen (CAT) KW - Haftfestigkeit KW - Verbundfestigkeit PY - 2017 AN - OPUS4-41291 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sentker, K. A1 - Yildirim, Arda T1 - Characterization of the thermotropic phase behavior and microscopic structure of a confined discotic liquid crystal N2 - Discotic liquid crystals (DLC) filled into cylindrical nanopores exhibit a liquid crystalline phase with their molecules arranged in hexagonal columns. The columns orient perpendicular (radially) or parallel (axially) with respect to the pore axis depending on surface anchoring conditions and pore size. Axially oriented columns enable the fabrication of organic nanowires utilizing the high conductivity in the stacking direction due to overlapping π-electrons. This leads to interesting applications in e.g. organic semiconductorbased devices. The molecular ordering of the liquid crystalline columns can be probed by temperature dependent optical retardation measurements supplemented by X-ray diffraction sensitive to the translational order. We investigated the DLC 2, 3, 6, 7, 10, 11 - hexakis [hexyloxy] triphenylene (HAT6) embedded in nanoporous alumina and silica membranes as function of the pore diameter (12 nm - 180 nm). Due to their hydrophilic nature porous membranes enforce face-on anchoring leading to a radial orientation. To obtain edge-on anchoring conditions, and thus favoring axial orientation, the silica membrane surface is chemically modified. The optical retardation measurements show that the columns orient radially in these membranes independent of the anchoring conditions. Interestingly, a quantized phase transition of each molecular layer is found indicated by a distinct increase of the optical orientation. Additionally, an axial orientation of HAT6 filled into alumina membranes with a pore diameter of 25 nm is achieved. A Landau-de Gennes ansatz semi-quantitatively describes the phase transition behavior observed. X-ray diffraction experiments performed at the 3rd generation synchrotron radiation source PETRA III at DESY giving detailed information about the translational order support these findings. Summarizing, this study shows the existence of a phase transition in the molecular range as well as the suitability of the membrane with 25 nm pores as a template for preparing organic nanowires. T2 - Liquids 2017 – 10th Liquid Matter Conference CY - Ljubljana, Slovenia DA - 17.07.2017 KW - Discotic Liquid Crystals PY - 2017 AN - OPUS4-41180 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koegler, M. T1 - Time-gated Raman spectroscopy and SERS as advanced technologies in bioprocess monitoring N2 - Raman spectroscopy is becoming a powerful process analytical technology (PAT) tool. Until now Raman technology has not shown its full potential in bioprocess on-line monitoring due to several technical challenges. Because of only small? interference from water molecules, Raman-spectroscopy is in contrast to IR spectroscopy able to follow changes of metabolite concentrations in dilute aqueous solutions. Results from common CCD-based process Raman-spectrometers reveal only barely identifiable peaks with a dominating (fluorescence) background. To solve this, Raman spectroscopy needs: (A) an enhancement to increase the limit of detection (LOD), and (B) a reliable method to distinguish the Raman signal from the sample-related auto-fluorescence. SERS (surface enhanced Raman spectroscopy) acts as an optical "nano-antenna"-effect. It causes a dipolar localized surface Plasmon resonance effect due to noble metallic nanoparticles or roughened metal and improves the limit of detection (LOD) significantly. Another new process-monitoring technique, which removes the fluorescence background in Raman-measurements is called time-gated Raman spectroscopy. It uses a picosecond pulsed Nd:YVO4-laser as emission source (exc= 532 nm) and a gated SPAD-array (Single Photon Avalanche Detector) detector instead of commonly used CCD (Charged Coupled Device)-detectors and CW (Continues Wave) laser emission. Time-Gate can measure the Raman-signal before the stronger fluorescence signal reaches the detector. In this study we utilized both SERS (Surface Enhanced Raman Spectroscopy) and time-gated Raman spectroscopy (TG-Raman) in combination on cell-free supernatant samples of an Escherichia coli cultivation with mineral salt media and a lactic acid bacteria fermentation with complex media. As a reference method for the estimation of amino acids and other metabolites, HPLC-RID and HPLC-FLD were used to evaluate the Raman-based detection. The quantitative evaluation of Raman data was performed by multivariate data analysis such as principal component analysis (PCA) and partial least squares regression (PLSR). For the first time, we can show that both qualitative and quantitative measurements are conducted successfully with both, SERS and time-gated Raman methods in industrially relevant media, so that a fast and reliable in situ or bypassed concentration measurement becomes feasible. T2 - 2. Photonics Finland, Optics and Photonics Days 2017 CY - Oulu, Finland DA - 29.05.2017 KW - Time-gate Raman KW - PAT KW - Chemometrics PY - 2017 UR - http://www.photonics.fi/event/opd17-optics-photonics-days-2017/ AN - OPUS4-41182 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertin, Annabelle T1 - Upper critical solution temperature (UCST)- type thermoresponsive polymers from acrylamide-based monomers N2 - UCST-type thermoresponsive polymers that phase separate from solution upon cooling present a tremendous potential not only in aqueous media where they can be used in drug delivery, diagnostic and microfluidic applications, but also in water/alcohol mixtures, where they can be used for instance in sensing systems for alcohol-soluble drugs. However, only a few thermoresponsive polymers have been reported that present an UCST in a relevant temperature range and “green” solvents such as water or ethanol. In this context, acrylamide-based monomers can be very useful building blocks for designing novel UCST-type polymers because of their hydrophilic nature (with the right side chain) and propensity to form hydrogen bonds. We want to present our latest results on the copolymer poly(acrylamide-co-acrylonitrile) (P(AAm-co-AN)) that present a UCST in water as well as on two homopolymers based on an acrylamide derivative of 2,6-diaminopyridine, namely poly(N-(6-aminopyridin-2-yl)acrylamide) (PNAPAAm) and poly(N-(6-acetamidopyridin-2-yl)acrylamide) (PNAcAPAAm) that show UCST-type thermoresponsiveness in water/alcohol mixtures. Our focus for P(AAm-co-AN)) is its aggregation behaviour above and below its phase transition temperature as the size of thermoresponsive polymeric systems is of prime importance for biomedical applications (as size dependent processes take place in the body) and is linked to the optical properties of a material that matter in materials science. In the case of PNAPAAm and PNAcAPAAm, we focused on the co-solvency/co-non solvency effect on the phase transition temperature in water/alcohol mixture. Indeed, polymers with UCST behavior below 60°C in water/alcohol mixtures are extremely promising for the preparation of “smart” materials for sensing. T2 - 31st Conference of the European Colloid and Interface Society (ECIS 2017) CY - Madrid, Spain DA - 03.09.2017 KW - Thermoresponsive polymers KW - UCST polymers KW - Acrylamide based polymers PY - 2017 AN - OPUS4-41902 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erenberg, Marina T1 - Impact limiter behaviour under IAEA fire test conditions N2 - The safety of packages for the transport of spent nuclear fuel or radioactive waste has to be proven by consecutive testing and/or numeric analysis. For damage protection these casks are equipped with impact limiters. German package designs usually include wood filled impact limiters encapsulated by steel sheets. Because the steel sheets suppress the oxygen supply into the wood, the scenario of impact limiter burning as a safety disturbance was not yet considered. The safety of these packages is proven in compliance with IAEA regulations by accomplished cumulative mechanical and fire tests. Mechanical reliability is proven by different drop tests. Drop testing might cause significant damage of the impact limiter steel sheets and might enable sufficient oxygen supply to the impact limiter during the following fire test. During the fire test the package is exposed to an engulfing 800 °C fire with a heat flux of about 75 kWm-2 for 30 minutes. After these both tests the degradation of the package has to be within defined prescriptive limits. Leak tightness of the cask is of particular importance. The aim of this project is to consider the case of impact limiter burning as a safety disturbance and to investigate the behaviour of a real size impact limiter during and after a fire test. The objective is to find out whether a self-sustaining smouldering fire is initiated. A smouldering fire is expected because of previously conducted promising small scale tests at BAM. The amount of energy, transferred from the impact limiter into the cask is of importance and will be quantified with a therefore designed test bench. The impact limiter specimen has got a volume of about 3 m³ wood. The impact limiter is mounted onto a water tank which simulates the cask and its heat generating radioactive inventory. The water tank is mounted on a frame. By pipes a closed water circuit through the water tank is realized. To answer the question of how much heat is transferred from the smouldering fire into the cask, the mass flow and the temperature at the tank inlet and outlet is measured. With that the time dependent heat transfer rate can be calculated. The second objective was to determine the fire spread inside the impact limiter. Therefore, the impact limiter is equipped with about 50 thermocouples to determine the global fire spread on the one hand and the local spread of particular spots on the other hand. T2 - IAFSS 2017 CY - Lund, Sweden DA - 12.6.2017 KW - Smouldering fire KW - Safety engineering KW - Burning of wood KW - Transport containers PY - 2017 AN - OPUS4-41906 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erdmann, Maren T1 - Effect of surface degradation on high-density polyethylene for initial attachment of bacillus and pseudomonas N2 - High-density polyethylene (PE-HD) is a widely applied plastic for fuel storage tank applications. But such tanks, filled with diesel or biodiesel, provide excellent environmental conditions for growth of a broad spectrum of fungi and various bacteria1. This can result in fuel contamination, engine plugging or possible (bio-) degradation2. Our research focusses on the initial attachment phase of Bacillus sp. and Pseudomonas aeruginosa isolated from a „dieselpest“2 on two distinctly PE-HD materials, typical for fuel storage tank applications, pre-damaged thermally and by UV-irradiation. T2 - PDDG CY - Taormina, Sicily, Italy DA - 04.09.2017 KW - PE-HD KW - UV-irradiation KW - Initial attachment KW - Bacteria PY - 2017 AN - OPUS4-41908 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erdmann, Maren T1 - Long-term storage of high-density polyethylene in biodiesel and diesel fuels N2 - Sustainable energy and clean engine fuels receive more and more attention. Petrodiesel could be substituted by biofuels such as biodiesel produced from renewable resources. Biodiesel is derived by transesterification of oils with alcohols for example vegetable oils, animal fats or food waste. Its chemical composition of unsaturated fatty methyl acids causes biodiesels susceptibility to oxidation. Especially, the polymer-biodiesel performance under long-term conditions has been considered only in few researches. Our study addresses a long-term storage scenario of a polymeric fuel tank containing biodiesel or diesel. T2 - PDDG CY - Taormina, Sicily, Italy DA - 04.09.2017 KW - PE-HD KW - Degradation KW - Biodiesel KW - Diesel PY - 2017 AN - OPUS4-41909 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kern, Simon T1 - Reading between the lines – Automated data analysis for low field NMR spectra N2 - For reaction monitoring and process control using NMR instruments, in particular, after acquisition of the FID the data needs to be corrected in real-time for common effects using fast interfaces and automated methods. When it comes to NMR data evaluation under industrial process conditions, the shape of signals can change drastically due to nonlinear effects. Additionally, the multiplet structure becomes more dominant because of the comparably low-field strengths which results in overlapping of multiple signals. However, the structural and quantitative information is still present but needs to be extracted by applying predictive models. We present a range of approaches for the automated spectra analysis moving from statistical approach, (i.e., Partial Least Squares Regression) to physically motivated spectral models (i.e., Indirect Hard Modeling). By using the benefits of traditional qNMR experiments data analysis models can meet the demands of the PAT community (Process Analytical Technology) regarding low calibration effort/calibration free methods, fast adaptions for new reactants, or derivatives and robust automation schemes. T2 - Small Molecule NMR Conference (SMASH) CY - Baveno, Italy DA - 17.09.2017 KW - Online NMR spectroscopy KW - Data analysis KW - Chemometrics KW - Indirect hard modeling KW - Spectral modeling KW - Line prediction KW - CONSENS KW - SMASH PY - 2017 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-419498 UR - http://www.smashnmr.org/conference/program AN - OPUS4-41949 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hemker, N. T1 - An experiemntal set-up for the generation of microplastics: Degradation of polypropylene in the presence of different antioxidants N2 - The presented project shows the development of an experimental set-up for the simulation of maine conditions for the artifical generation of microplastics. T2 - PDDG Conference CY - Taormina, Italy DA - 04.09.2017 KW - Microplastics KW - Polymer KW - Degradation KW - Additives PY - 2017 AN - OPUS4-41913 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schreier, Andy T1 - Analytical model for mode-based insertion loss in ball-lensed coupling of graded-index silica and polymer fibres N2 - Analytical model for ball-lensed couplers to calculate the insertion loss for each optical mode. The basis for the calculation are commercial perfluorinated polymer optical (PFGI-POFs) and silica based fibres (SOFs). The modal power distribution for given misalignments are presented as well as the reflection-based losses at all optical interfaces. Additionally, the ball-lensed interconnection between PFGI-POF and SOF was theoretically demonstrated. T2 - POF 2017: 26th International Conference on Plastic Optical Fibres CY - Aveiro, Portugal DA - 13.09.2017 KW - Polymer optical fibre KW - Optical connector PY - 2017 AN - OPUS4-41974 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Damm, David T1 - Informationssystem Datenbank GEFAHRGUT N2 - Präsentation der Möglichkeiten der Recherche in der Datenbank GEFAHRGUT T2 - 7. Deutsche Gefahrgut-Sicherheitstage 2017 CY - Fahrsicherheitszentrum Nürburgring, Germany DA - 12.09.2017 KW - Gefahrgut KW - Datenbank KW - Gefahrguttransport KW - Informationssystem KW - Dangerous goods KW - Database KW - Transport of dangerous goods KW - Information system PY - 2016 AN - OPUS4-41976 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Damm, David T1 - Fachinformationssystem Datenbank GEFAHRGUT - Hilfe bei der Kennzeichnung der Umweltgefahr N2 - Möglichkeiten der Datenbank GEFAHRGUT und des Gefahrgutdatenservices die Notwendigkeit der Kennzeichnung der Umweltgefahr zu ermitteln T2 - 7. Deutsche Gefahrgut-Sicherheitstage 2017 CY - Fahrsicherheitszentrum Nürburgring, Germany DA - 12.09.2017 KW - Umweltgefahr KW - Kennzeichnung KW - Fachinformationssystem KW - Datenbank KW - Gefahrgut KW - Environmentally hazardous substance KW - Labelling KW - Specialised information system KW - Dangerous goods KW - Database PY - 2017 AN - OPUS4-41977 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leiterer, Jork T1 - Ovalbumin Extends Dramatically the Lifespan of a Homogenous Amorphous CaCO3 Precursor - Amorphous Precursors During Formation of Calcium Carbonate Monitored via Contact-free in situ Synchrotron X-Ray Scattering Techniques T2 - Berliner Elektronenspeicherring-Gesellschaft für Synchrotonstrahlung m.b.H. (BESSY) CY - Berlin, Germany DA - 2008-12-06 PY - 2008 AN - OPUS4-18522 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, André T1 - Characterisation of shock-absorbing components under impact loading T2 - DYMAT 2009, Royal Military Academy CY - Brussels, Belgium DA - 2009-09-07 PY - 2009 AN - OPUS4-18580 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Crostack, H.-A. T1 - Tomographic Analysis of 3D Microstructure and Deformation of Multiphased Materials at BAMline T2 - BESSY Usermeeting CY - Berlin, Germany DA - 2008-12-04 PY - 2008 AN - OPUS4-18581 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ehrig, Karsten T1 - Dimensional Measurements with Computed Tomography at BAMline T2 - BESSY Usermeeting CY - Berlin, Germany DA - 2008-12-04 PY - 2008 AN - OPUS4-18582 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertovic, Marija T1 - Influence of Time Pressure on the Inspection Performance in German Nuclear Power Plants T2 - XXIX International Congress of Psychology CY - Berlin, Germany DA - 2008-07-20 PY - 2008 AN - OPUS4-18530 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weber, Gert T1 - Resistance Spot Welding of Advance High Strength Steels (AHSS) T2 - Materials Science Engineering CY - Nuremberg, Germany DA - 2008-09-01 PY - 2008 AN - OPUS4-18501 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Haase, Oskar T1 - High energy tomography and crack recognition T2 - Computerized tomography for industrial applications and image processingin Radiology CY - Berlin, Germany DA - 1999-03-15 PY - 1999 AN - OPUS4-18682 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Radiographie and Tomographie von Holz mit Neutronen T2 - DGZfP-DACH-Jahrestagung 2008 CY - St. Gallen, Switzerland DA - 2008-04-28 PY - 2008 AN - OPUS4-18649 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Emmerling, Franziska T1 - Coordination of U(IV) sulfate in aqueous solution of high ionic strength and in solid state T2 - Jahrestagung der Deutschen Gesellschaft für Kristallographie CY - Erlangen, Germany DA - 2008-03-03 PY - 2008 AN - OPUS4-18726 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Menzel, Michael T1 - Fe3+.ions in solid state reactions of mechanically activated pseudo-Boehemite xerogels studied by Mössbauer-, ESR spectroscopy and Thermoanalysis T2 - International Symposium on the Industrial Application of the Mössbauer Effect (ISIAME 2008) CY - Budapest, Hungary DA - 2008-08-17 PY - 2008 AN - OPUS4-18727 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klobes, Peter A1 - Klimakow, Maria A1 - Emmerling, Franziska T1 - Gas adsorption and SAXS studies of mechanochemically prepared Cu3 (BTC)2 T2 - CPM-5 - 5th - International Workshop "Characterization of Porous Materials: from Angstroms to Millimeters", New Brunswick, NJ, USA CY - New Brunswick, NJ, USA DA - 2009-06-24 PY - 2009 AN - OPUS4-18713 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radnik, J. T1 - Simultaneous Synchrotron X-ray Scattering and Optical Spectroscopy - New Insights into the Precipitation of mixed Mo-bassed Oxides Catalyst Precursors T2 - 27 th BESSY User´s Meeting CY - Berlin, Germany DA - 2008-12-06 PY - 2008 AN - OPUS4-18719 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mc Hugh, Jarlath T1 - Characterisation of the viscoelastic properties of crosslinking polymers using ultrasound T2 - 1. Wildauer Duromer Tagung CY - Wildau, Germany DA - 2008-03-11 PY - 2008 AN - OPUS4-17404 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malitte, Hans-Joachim T1 - Akkreditierung in der Zerstörungsfreien Prüfung T2 - DGZfP-Jahrestagung 2008 CY - St. Gallen, Switzerland DA - 2008-04-28 PY - 2008 AN - OPUS4-17429 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pohle, Dirk T1 - Preparation of calcium-phosphate bone substitutes by use of a 3D-printed moulds T2 - Materials Science and Engineering, MSE 2008 CY - Nuremberg, Germany DA - 2008-09-01 PY - 2008 AN - OPUS4-17710 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Pool flames of organic peroxides - experimental and CFD study T2 - 32nd International Symposium on Cumbustion CY - Montreal, Canada DA - 2008-08-03 PY - 2008 AN - OPUS4-17771 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Poli, Marco T1 - Entlastungsverhalten dreiphasiger Dampfdrucksysteme T2 - 9. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 2008-11-06 PY - 2008 AN - OPUS4-17763 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kreutzbruck, Marc T1 - Influence of surface properties on the detection and quantification of voids in concrete structures T2 - 35th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE) CY - Chicago, IL, USA DA - 2008-07-20 PY - 2008 AN - OPUS4-18003 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frunza, L. T1 - Relaxation processes of octylcyanobiphenyl in molecular sieves with hexagonal pore structure T2 - Zeolites and Related Materials: Trends, Targets and Challenges CY - Paris, France DA - 2008-06-02 PY - 2008 AN - OPUS4-17994 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frunza, L. T1 - Hydroxyl groups on the surface of AIMCM-41 molecular sieves as characterized by rotational fluctuations of confined water T2 - Zeolites and Related Materials: Trends, Targets and Challenges CY - Paris, France DA - 2008-06-02 PY - 2008 AN - OPUS4-17996 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Milmann, Boris T1 - Ultraschallecho-Verfahren für Spannbeton: Signifikanter Nachweis von Verpressfehlern mit Phasenauswertung T2 - Fachtagung Bauwerksdiagnose 2008, Praktische Anwendungen Zerstörungsfreier Prüfungen und Zukunftsaufgaben CY - Berlin, Germany DA - 2008-02-21 PY - 2008 AN - OPUS4-18067 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stephan, Kristin T1 - Screening von 40 Elementen in Milch und Futtermitteln mittels HR-ICP-MS T2 - ICP-MS-Anwendertreffen + 8. Symposium der Massenspektrometische Verfahren der Elementaranalyse CY - Dresden, Germany DA - 2008-09-17 PY - 2008 AN - OPUS4-18059 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Smoke gas analysis by Fourier transform infrared spectroscopy T2 - 14th International Conference on Automatic Fire Detection, AUBE CY - Duisburg, Germany DA - 2009-09-08 PY - 2009 AN - OPUS4-19835 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Bioisomerization of HBCD: Results of feeding experiments with pure gamma-HBCD enantiomers T2 - 29th International Symposium on Halogenated Persistent Organic Pollutants (Dioxin 2009) CY - Beijing, China DA - 2009-08-23 PY - 2009 AN - OPUS4-19655 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Predictive identification of pentabromocyclododecane (PBCD) isomers with high binding affinity to hTTR T2 - 29th International Symposium on Halogenated Persistent Organic Pollutants (Dioxin 2009) CY - Beijing, China DA - 2009-08-23 PY - 2009 AN - OPUS4-19656 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Transient respnse of laser-irradiated solids studied with femtosecond short-wavelength free-electron-lasers T2 - Laser Damage Symposium XLI: Annual Symposium on Optical Materials for High Power Lasers CY - Boulder, CO, USA DA - 2009-09-21 PY - 2009 AN - OPUS4-19629 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reuter, Dirk T1 - A basic physical Model of X-Ray Scattering for improved X-Ray Fluorescence Analysis - Monochromatic Synchrotron Radiation T2 - ICXOM20 - 20th International Congress on X-ray Optics and Microanalysis CY - Karlsruhe, Germany DA - 2009-09-14 PY - 2009 AN - OPUS4-19644 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bresch, Harald T1 - Zerstörungsfreie Speziation deponierter Nanopartikel mit TXRF - NEXAFS T2 - 248. PTB-Seminar CY - Braunschweig, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-19646 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jörn, Daniela T1 - Entwicklung und Charakterisierung schnell resorbierbarer alkalihaltiger Calciumphosphatzemente für die Traumatologie und Tumorchirurgie T2 - 59. Jahrestagung der Deutschen Gesellschaft für Mund-, Kiefer- und Gesichtschirurgie (DGMKG), Thema: Funktion des Knochens in der MKG-Chirurgie CY - Vienna, Austria DA - 2009-06-03 PY - 2009 AN - OPUS4-19682 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dombrowski, Felix T1 - Rheological investigations on a degradable, figuline CPC T2 - The 22nd Int. Symp. on Cermics in Medicine (BIOCERAMICS 22) CY - Daegu, South Korea DA - 2009-10-26 PY - 2009 AN - OPUS4-19683 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gildenhaar, Renate T1 - Preparation of Calcium Alkali Phosphate Implants by 3D-Printing T2 - The 22nd Int. Symp. on Cermics in Medicine (BIOCERAMICS 22) CY - Daegu, South Korea DA - 2009-10-26 PY - 2009 AN - OPUS4-19684 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - LTCC-Werkstoffe aus dem Stoffsystem CaO-La2O3-Al2O3-B2O3 T2 - Symp. HLK 2009 des Gemeinschaftsausschusses der DKG und DGM CY - Aachen, Germany DA - 2009-03-23 PY - 2009 AN - OPUS4-19689 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Bärbel T1 - Herstellung und Charakterisierung von LTCC-Multilayern mit großvolumigen Kavitäten T2 - Symp. HLK 2009 CY - Aachen, Germany DA - 2009-03-25 PY - 2009 AN - OPUS4-19690 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tzschichholz, Grit T1 - Einsatz verschiedener Porenbildner zur Herstellung poröser Kompositkeramiken aus Nanopulver T2 - DKG-JT 2009/ DGM Symposium HLK 2009 CY - Aachen, Germany DA - 2009-03-22 PY - 2009 AN - OPUS4-19691 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Cleaning of artifically soled paper using nanosecond, picosecond and femtosecond laser pulses T2 - Konferenz COLA 09 (10th International Conference on Laser Ablation) CY - Singapore DA - 2009-11-22 PY - 2009 AN - OPUS4-19762 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Girard-Lauriault, Pierre-Luc T1 - Depth Resolved Chemical Characterization of Plasma Polymers by Energy Resolved XPS T2 - 13th European Conference on Applications of Surface and Interface Analysis CY - Antalya, Turkey DA - 2009-10-18 PY - 2009 AN - OPUS4-19763 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marzok, Ulrich T1 - Hochtemperatur-Laserprofilometrie für glaskeramische Folien T2 - 83. Glastechnische Tagung CY - Amberg, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-19693 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nofz, Marianne T1 - Competing redox reactions in Fe-containing AlO(OH) and Al2O3 matrices: A combined investigation by Mössbauer, ESR spectroscopy and thermal analysis T2 - Intern. Conf. of the Application of the Mössbauer Effect (ICAME 2009) CY - Vienna, Austria DA - 2009-07-19 PY - 2009 AN - OPUS4-19694 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naghib Zadeh, Hamid T1 - BaTiO3-Based High-k Dielectric Compositions with LTCC Compatible Sintering Temperature T2 - 4th The Ceramic Interconnect and Ceramic Microsystems Technologies Conf. CY - Munich, Germany DA - 2008-04-21 PY - 2008 AN - OPUS4-19697 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kreutzbruck, Marc T1 - Advanced Crack Shape Analysis using SAFT T2 - 36th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE) CY - Kingston, RI, USA DA - 2009-07-26 PY - 2009 AN - OPUS4-19813 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Different Omega-aminothiols and self-assembled monolayers thereof on gold T2 - 13th European Conference on Applications of Surface and Interface Analysis, ECASIA 09 CY - Antalya, Turkey DA - 2009-10-18 PY - 2009 AN - OPUS4-19815 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kreutzbruck, Marc T1 - Magnetic Response Field of Spherical Defects with Conductive Components T2 - 36th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE) CY - Kingston, RI, USA DA - 2009-07-26 PY - 2009 AN - OPUS4-19812 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ostermann, Markus T1 - Neue Kandidatenreferenzmaterialien für die Untersuchung von Kunststoffen mit RFA T2 - PRORA 2009, Fachtagung prozessnahe Röntgenanalytik CY - Berlin, Germany DA - 2009-11-26 PY - 2009 AN - OPUS4-19939 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malitte, Hans-Joachim T1 - Mobile RFA - Strahlenschutz unter Anwenderbedingungen T2 - PRORA 2009, Fachtagung prozessnahe Röntgenanalytik CY - Berlin, Germany DA - 2009-11-26 PY - 2009 AN - OPUS4-19940 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ostermann, Markus T1 - Messungen von Bodenproben mit der mobilen RFA - Möglichkeiten und Beschränkungen T2 - PRORA 2009, Fachtagung prozessnahe Röntgenanlytik CY - Berlin, Germany DA - 2009-11-26 PY - 2009 AN - OPUS4-19941 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matschulat, Andrea T1 - New hybrid probes for NIR-SERS sensing T2 - FTIR-Workshop, Robert-Koch-Institut CY - Berlin, Germany DA - 2009-10-15 PY - 2009 AN - OPUS4-19942 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matschulat, Andrea T1 - SERS hybrid probes as versatile tools for biological sensing T2 - Symposium Licht-Materialien-Modelle CY - Berlin, Germany DA - 2009-09-07 PY - 2009 AN - OPUS4-19953 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merk, Virginia T1 - Design and characterization of new SERS substrates for analytical application T2 - Symposium Licht-Materialien-Modelle CY - Berlin, Germany DA - 2009-09-07 PY - 2009 N1 - Geburtsname von Merk, Virginia: Joseph, V. - Birth name of Merk, Virginia: Joseph, V. AN - OPUS4-19954 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bras, A. T1 - Surface Effects on the Molecular Dynamics of a Nematic Liquid Crystal Confined to Malecular Sieves T2 - 6th International Discussion Meeting Relaxation in Complex Systems CY - Rome, Italy DA - 2009-08-30 PY - 2009 AN - OPUS4-19955 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kneipp, Janina T1 - Nanoparticle-based SERS for biodiagnostic sensing T2 - European Conference on the Spectroscopy of Biological Molecules 2009 CY - Palermo, Italy DA - 2009-08-28 PY - 2009 N1 - Geburtsname von Merk, Virginia: Joseph, V. - Birth name of Merk, Virginia: Joseph, V. AN - OPUS4-19956 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinhardt, F. T1 - Probing Nanoparticels Deposited on Flat Surfaces by X-ray Spectrometry at Grazing Incidence T2 - European Aerosol Conference CY - Karlsruhe, Germany DA - 2009-09-06 PY - 2009 AN - OPUS4-19901 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Surface chemical imaging (ToF-SIMS and XPS) of carbohydrate microarray prototypes T2 - SIMS XVII, 17th International Conference on Secondary Ion Mass Spectrometry CY - Toronto, Canada DA - 2009-09-14 PY - 2009 AN - OPUS4-19930 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bresch, Harald T1 - Nanoparticulate Emissions from Car-Brakes T2 - European Aerosol Conference CY - Karlsruhe, Germany DA - 2009-09-06 PY - 2009 AN - OPUS4-19906 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Probenahme gelöster Gase in Grundwasser: Wasserstoff, Methan, Ethen und Vinylchlorid T2 - Ökotox CY - Trier, Germany DA - 2009-09-23 PY - 2009 AN - OPUS4-19880 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Probenahme LHKW in Grundwasser: Vergleich aktive und passive Probenahme T2 - Ökotox CY - Trier, Germany DA - 2009-09-23 PY - 2009 AN - OPUS4-19881 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Probenahme gelöster Gase in Grundwasser: Wasserstoff, Methan, Ethen und Vinylchlorid T2 - DECHEMA Jahrestagung CY - Frankfurt am Main, Germany DA - 2009-11-23 PY - 2009 AN - OPUS4-19882 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Thermoanalytical investigations in the Smoke Density Chamber T2 - Joint Symposium on Thermal Analysis and Calorimetry CY - Dresden, Germany DA - 2010-05-26 PY - 2010 AN - OPUS4-21339 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Illerhaus, Bernhard T1 - Einsatz von mobilen Röntgenuntersuchungsmethoden im Museum - Zwei Fallbeispiele N2 - Zwei Bildhauermodelle aus dem Georg-Kolbe-Museum Berlin standen zur Restaurierung an. Das kleinere, 'Lucino' (1920), 41cm, wurde hochauflösend mit CT gemessen, da mittels CT sowohl der Herstellungsprozeß einer Gipsstatue als auch der innere Zustand, wie Ergänzungen, Klebungen und Armierungen, festgestellt werden können. Aus den CT Bildern ergab sich eine für die vorher vermutete Gipszusammensetzung ungewöhnliche innere Struktur. Mit einer Freihand bedienten Röntgenpistole zur Messung der Röntgenfluoreszenz wurde daraufhin die Zusammensetzung des Materials der Statuette als Terracotta bestimmt. Durch den Einsatz von Helium als Spülmittel konnten auch leichte Materialien nachgewiesen und so eine Unterscheidung zwischen Gips und gebranntem Ton durchgeführt werden. Aus den CT Daten wurde eine virtuelle Darstellung der äußeren Geometrie gewonnen. Ein damit versuchsweise erstelltes Replik (Rapid Prototyping, 3D-Drucker, TU-Berlin) entsprach nicht den Anforderungen des Museums zur Erstellung einer Gußform für eine Bronzekleinserie der Statuette. Die zweite Statue, die 'Große Nacht' (1930) ist mit ihrer Größe von 2,12m und aufgrund des durch korrodierende Metallarmierung verursachten Schadensbildes nicht mehr transportfähig. Eine in-situ Untersuchung mit dem mobilen Tomographen, der in den 1980ern zur Untersuchung von Bäumen gebaut und jetzt mit einem modernen Flachdetektor und einer Röntgenröhre ausgestattet ist, wird vorgestellt. Die Möglichkeiten acder in-situ CT für große Skulpturen werden anhand der Ergebnisse diskutiert. T2 - DGZfP-Jahrestagung 2010 CY - Erfurt, Germany DA - 10.05.2010 KW - Mobile CT KW - Mobile RFA PY - 2010 AN - OPUS4-21316 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nie, Yaru T1 - Tailoring the mechanical and electrical properties of epoxy/carbon nanofiber (CNF) composites by chemical modification of CNFs T2 - E-MRS 2010 Spring Meeting CY - Strasbourg, France DA - 2010-06-07 PY - 2010 AN - OPUS4-21367 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Artificial fruits - post harvest online monitoring of agricultural food by measuring humidity and temperature T2 - TEMPMEKO+ISHM 2010 (Joint International Symposium on Temperature, Humidity, Moisture and Thermal Measurements in Industry and Science) CY - Portorož, Slovenia DA - 2010-05-31 PY - 2010 AN - OPUS4-21368 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Feistkorn, Sascha T1 - Die Anwendung der POD zum Gütenachweis von ZfPBau-Verfahren T2 - DGZfP-Jahrestagung CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-21376 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, S. T1 - The Belousov-Zhabotinsky reaction as an engine for the directed transportation of macroscopic particles on surfaces T2 - 24th Conference of the European Colloid and Interface Society CY - Prague, Czech Republic DA - 2010-09-05 PY - 2010 AN - OPUS4-21383 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Poppenberg, J. T1 - Layer-by-Layer Self Assembly of Macrocycles and Rotaxanes on Gold Surfaces T2 - 24th Conference of the European Colloid and Interface Society CY - Prague, Czech Republic DA - 2010-09-05 PY - 2010 AN - OPUS4-21384 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Martin A1 - Suhendra, Suhendra T1 - Heat Pipes - Suitable for Extinguishing Coal Fires? T2 - 2nd International Conference on Coal Fire Research ICCFR2 CY - Berlin, Germany DA - 2010-05-19 PY - 2010 AN - OPUS4-21386 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred T1 - Reduction of Mercury Emission from Historical Tin-Mercury Mirrors T2 - IAQ 2010, 9th Indoor Air Quality Meeting CY - Chalon-sur-Saône, France DA - 2010-04-21 PY - 2010 AN - OPUS4-21310 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thomas, Hans-Martin T1 - Die Kunst des Prüfens: Wirbelstromprüfung am Schrein der Heiligen Drei Könige T2 - DGZfP-Jahrestagung 2010 Zerstörungsfreie Materialprüfung ZfP in Forschung, Entwicklung und Anwendung CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-21480 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Casperson, Ralf T1 - Einfluss lokaler Aufhärtung ferritischer Stähle auf die Risstiefenbestimmung mit dem Wirbelstromprüfverfahren N2 - Mechanische Belastung wie z. B. der Rollkontakt zwischen den Rollen und Lagerringen eines Wälzlagers oder der Rad-Schiene-Kontakt bei der Eisenbahn führen bei ferritischen Stählen zu einer Aufhärtung der Oberfläche. Die mit der Aufhärtung verbundene Versprödung begünstigt die Entstehung von Ermüdungsrissen. Zur Risstiefenbestimmung mit dem Wirbelstromprüfverfahren werden in der Regel Kalibrierkörper mit künstlichen Testfehlern aus dem Grundwerkstoff des Prüfteils verwendet. Die betriebsbedingte Aufhärtung der Prüfteiloberfläche bleibt bei der Kalibrierung unberücksichtigt. Die lokale Aufhärtung der Oberfläche führt zu einem ortsabhängigen Offset des Wirbelstromsignals in Richtung der Rissanzeigen und somit zu einer Überbewertung der Risstiefe. Bei einzelnen Rissen lässt sich der Effekt kompensieren, in dem das Wirbelstromgerät neben jedem Riss abgeglichen bzw. die Differenz zwischen dem Offset und der Rissanzeige berechnet wird. In der Realität liegen die Ermüdungsrisse jedoch oft so dicht nebeneinander, dass auf Grund der Überlagerung benachbarter Rissanzeigen weder ein Abgleich zwischen den Rissen noch eine Bestimmung des Offsets möglich ist. Finite-Elemente-Berechnungen ermöglichen es, die in der Realität stets kombiniert auftretenden Wirbelstromsignale der Ermüdungsrisse und der Oberflächenaufhärtung getrennt zu simulieren, um Erkenntnisse für eine Verbesserung der Risstiefenbestimmung zu erlangen. T2 - DGZfP-Jahrestagung 2010 Zerstörungsfreie Materialprüfung ZfP in Forschung, Entwicklung und Anwendung CY - Erfurt, Germany DA - 10.05.2010 PY - 2010 AN - OPUS4-21482 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Engelhardt, M. T1 - In-situ studies of inter- and self diffusion in liquid metals T2 - Deutsche Tagung für Forschung mit Synchrotronstrahlung, Neutronen und Ionenstrahlen an Großgeräten (SNI2010) CY - Berlin, Germany DA - 2010-02-24 PY - 2010 AN - OPUS4-21450 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Poli, Marco T1 - Grenzen bei der Auslegung von turbulenten Explosionsdruckentlastungen T2 - 12. BAM/PTB-Kolloquium zur chemischen und physikalischen Sicherheit, BAM CY - Berlin, Germany DA - 2010-06-15 PY - 2010 AN - OPUS4-21471 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seeger, Stefan T1 - Characterization of Localized NP Emission Sources - Examples T2 - Metrology of Airborne Nanoparticles, Standardisation and Applications (MANSA-Workshop), NPL CY - London, England DA - 2010-06-08 PY - 2010 AN - OPUS4-21434 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seifert, Alexander T1 - CHEMSAFE 2010 beta - Die neue Version T2 - 12. BAM/PTB-Kolloquium zu Fragen der chemischen und physikalischen Sicherheitstechnik CY - Berlin, Germany DA - 2010-06-15 PY - 2010 AN - OPUS4-21436 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Martin T1 - Vorhersage von Selbstentzündungsvorgängen in Brennstofflagern mit Hilfe numerischer Simulationsrechnungen T2 - 12. BAM/PTB-Kolloquium zu Fragen der chemischen und physikalischen Sicherheitstechnik CY - Berlin, Germany DA - 2010-06-15 PY - 2010 AN - OPUS4-21487 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilrich, Cordula T1 - Examples for the influence of non-intrinsic properties on the classification of physical hazards according to the UN-GHS T2 - 13th International Symposium on Loss Prevention and Safety Promotion in the Process Industry CY - Bruges, Belgium DA - 2010-06-06 PY - 2010 AN - OPUS4-21492 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Huismann, Sven T1 - A Material Model for the Numerical Simulation of High Strength Concrete Columns Subjected to Fire Loading T2 - Sixth International Conference on Structures in Fire CY - East Lansing, MI, USA DA - 2010-06-02 PY - 2010 AN - OPUS4-21455 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zur, Malte T1 - Numerische und experimentelle Untersuchungen der Luftströmungen im Frachtcompartment von Verkehrsflugzeugen T2 - Sitzung des Beirates Werkstoffe und technische Systeme, BAM CY - Berlin, Germany DA - 2010-06-08 PY - 2010 AN - OPUS4-21458 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Girard-Lauriault, Pierre-Luc T1 - Quantitative Chemical Determination of Organic Layers using CDXPS: A Standard Experimental Procedure? T2 - Twelfth International Conference on Plamsa Surface Engineering CY - Garmisch-Partenkirchen, Germany DA - 2010-09-13 PY - 2010 AN - OPUS4-21423 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Girard-Lauriault, Pierre-Luc T1 - Non-destructive In-Depth Chemical Characterization of Air Exposed Plasma Polymers by Energy Resolved XPS T2 - Twelfth International Conference on Plasma Surface Engineering CY - Garmisch-Partenkirchen, Germany DA - 2010-09-13 PY - 2010 AN - OPUS4-21424 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Thermoanalytical investigations during a car fire T2 - Joint Symposium on Thermal Analysis and Calorimetry CY - Dresden, Germany DA - 2010-05-26 PY - 2010 AN - OPUS4-21429 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Particle size determination at different concentrated Al2O3 and SiO2 nanopowder suspensions with the ultrasonic spectrometer DT 1200 T2 - Partec, WCPT6 2010 CY - Nuremberg, Germany DA - 2010-04-26 PY - 2010 AN - OPUS4-21412 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - Round Robin Study of Particle Size Measurement by Laser Diffraction Method T2 - Partec 2010 CY - Nuremberg, Germany DA - 2010-04-26 PY - 2010 AN - OPUS4-21413 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mönch, Bettina T1 - Alkylglucuronide - Möglichkeiten zur detektion des Alkoholkonsums T2 - Tag der Chemie, FU Berlin CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21418 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lischka, Susanne T1 - Synthese isotopenmarkierter, interner Standards für die Bestimmung von Arsenspezies in Biota mittels LC-ESI-MS T2 - Tag der Chemie, FU Berlin CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21420 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuhlich, Paul T1 - New disinfection by-product of polycyclic musk AHTN T2 - Tag der Chemie, FU Berlin CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21421 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Development and validation of a single collector ICPMS procedure to determine boron isotopic compositions of water and food samples T2 - European Geosciences Union, General Assembly 2010 CY - Vienna, Austria DA - 2010-05-02 PY - 2010 AN - OPUS4-21565 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Highly effective purification of carbon nanotubes by plasma-thermal annealing T2 - NT 10 - 11th International Conference on the Science and Application of Nanotubes CY - Montreal, Canada DA - 2010-06-27 PY - 2010 AN - OPUS4-21568 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiegner, Katharina T1 - Evaluierung von Alternativbaustoffen für die Herstellung emissionsarmer Museumsvitrinen T2 - 17. Innovationstag Mittelstand des Bundesministeriums für Wirtschaft und Technologie CY - Berlin, Germany DA - 2010-06-17 PY - 2010 AN - OPUS4-21508 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gonzalez-Gil, G. T1 - The carbon source governs the population dynamics of phosphate accumulating organisms in aerobic granules T2 - Swiss Microbiology 69th annual assembly CY - Zurich, Switzerland DA - 2010-06-24 PY - 2010 AN - OPUS4-21521 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dümichen, Erik T1 - Investigation of a flame retardant high-temperature polyamide T2 - Tag der Chemie CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21522 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maiwald, Michael T1 - Die aktualisierte Technologie-Roadmap "Prozess-Sensoren 2015+" T2 - Messe "Sensor+Test 2010" CY - Nuremberg, Germany DA - 2010-05-18 PY - 2010 AN - OPUS4-21575 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merk, Virginia T1 - Design and characterization of new SERS substrates for analytical applications T2 - Analytica CY - Munich, Germany DA - 2010-03-23 PY - 2010 N1 - Geburtsname von Merk, Virginia: Joseph, V. - Birth name of Merk, Virginia: Joseph, V. AN - OPUS4-21582 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pannenbecker, Kirsten T1 - Untersuchungen zum Vorkommen von Carbamzepin im Berliner Wasserkreislauf mittels ELISA T2 - Waser 2010, Jahrestagung der Wasserchemischen Gesellschaft CY - Bayreuth, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-21549 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosner, Martin T1 - Authentication of bell peppers using boron and strontium isotope compositions T2 - European Geosciences Union, General Assembly 2010 CY - Vienna, Austria DA - 2010-05-02 PY - 2010 AN - OPUS4-21541 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drescher, Daniela T1 - Surface-enhanced Raman spectrscopy for intracellular probing of nanoparticle interactions with eukaryotic cells T2 - Analytica Conference CY - Munich, Germany DA - 2010-03-22 PY - 2010 AN - OPUS4-21597 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esslinger, Susanne T1 - Enantiomerenspezifischer Vergleich von HBCD-Gehalten maritimer Lebewesen zweier norwegischer Fjorde T2 - 4. Gemeinsame Jahrestagung der GDCh-Fachgruppe Umweltchemie und Ökotoxikologie und der Society of Environmental Toxikology and Chemistry Europe (Umwelt 2010) CY - Dessau-Roßlau, Germany DA - 2010-09-06 PY - 2010 AN - OPUS4-21602 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zimbal, Christine T1 - Determination of the Gurney energy of civil used explosives T2 - BAM-PTB Kolloquium CY - Berlin, Germany DA - 2010-06-15 PY - 2010 AN - OPUS4-21614 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zimbal, Christine T1 - Determination of the Gurney energy of civil used explosives T2 - ICT-Tagung CY - Karlsruhe, Germany DA - 2010-06-29 PY - 2010 AN - OPUS4-21615 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Joachim T1 - Nonlinear electromechanical properties of the polypropylene ferroelectrets T2 - Structual and ferroelectric phase transitions CY - Telc, Czech Republic DA - 2010-05-24 PY - 2010 AN - OPUS4-21632 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Optical Mapping and Imaging for Quality Control of Thin Films and Surfaces T2 - ICCG 8, The 8th International Conference on Coatings on Glass and Plastics - Advanced Coatings for Large Area or High-Volume Products CY - Braunschweig, Germany DA - 2010-06-13 PY - 2010 AN - OPUS4-21586 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marchetti, Barbara T1 - THz Spectroscopy to derive the optical Constants of Liquids T2 - 35th International Conference on Infrared, Millimeter and THz Waves (IRMMW-THz 2010) CY - Rome, Italy DA - 2010-09-05 PY - 2010 AN - OPUS4-21662 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaal, Mate T1 - Entwicklung von Luftultraschall-Sensoren mit geringer akustischer Impedanz T2 - 15. ITG-/GMA-Fachtagung "Sensoren und Messsysteme 2010" CY - Nuremberg, Germany DA - 2010-05-18 PY - 2010 AN - OPUS4-21634 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartusch, Jürgen T1 - Untersuchungen zum Einsatz von PP-Schaumfoliensensoren für die berührungslose Ultraschallprüfung mit Ankopplung über Luft T2 - DGZfP-Jahrestagung 2010 CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-21637 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Joachim T1 - Airborne Ultrasound Investigations of Cellulare Polypropylene Ferroelectret Film T2 - 10. European Federation for Non-Destructive Testing CY - Moscow, Russia DA - 2010-06-07 PY - 2010 AN - OPUS4-21643 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schenk, Gottfried T1 - COMPAS-XXL - A Novel Phased Array System with Extended Capabilities T2 - 10th European Conference on non-destructive testing CY - Moscow, Russia DA - 2010-06-07 PY - 2010 AN - OPUS4-21646 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völz, Uwe T1 - Visualization of Sound Propagation with Electrodynamic Probes T2 - 10th European Conference on non-destructive testing CY - Moscow, Russia DA - 2010-06-07 PY - 2010 AN - OPUS4-21647 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kervalishvili, Guram N. T1 - Heat Transfer Modeling of Local Thermal Excitation for Surface Crack Detection and Characterization T2 - 10th European Conference on non-destructive testing CY - Moscow, Russia DA - 2010-06-07 PY - 2010 AN - OPUS4-21648 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühn, Andreas T1 - Kühn, A.; Höhse, M., Ostermann, M.; Neue Wege in der Analytik oberflächenmodifizierter Stähle; 2010, 21. - 23.02.2010, Attendorn T2 - Tag der Chemie CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21652 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - Thermal Decomposition of Flame-Retarded Polycarbonat / Silicon Rubber Blends: A Solid-State NMR Investigation T2 - 52. Rocky Mountain Conference on Analytical Chemistry CY - Snowmass, CO, USA DA - 2010-08-01 PY - 2010 AN - OPUS4-21680 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Huber, Alexandra T1 - Solid State NMR study of multiwalled carbon nanotubes T2 - GDCh Fachgruppentagung "Magnetische Resonanzspektroskopie" CY - Münster, Germany DA - 2010-09-20 PY - 2010 AN - OPUS4-21682 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - 31P MAS NMR - a Method for Analysis ans Development of Complex Bioceramics based on Ca 10(K,Na)(PO 4)7 T2 - 52nd Anual Rocky Mountain Conference on Analytical Chemistry CY - Snowmass, CO, USA DA - 2010-08-01 PY - 2010 AN - OPUS4-21702 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krietsch, Arne A1 - Scheid, Marc T1 - Experimentelle Untersuchung zum Einfluss eines neuen pyrotechnischen Zünders auf die ermittelten STK T2 - Interschutz - Internationale Leitmesse für Rettung, Brand- und Katastrophenschutz und Sicherheit CY - Leipzig, Germany DA - 2010-06-07 PY - 2010 AN - OPUS4-21746 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bäßler, Ralph T1 - Duplex Steel S 32304 - A Low Cost and Corrosion-Resistant Alternative to Molybdenum Containing Austenite T2 - EUROCORR 2010 CY - Moscow, Russia DA - 2010-09-13 PY - 2010 AN - OPUS4-21713 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lang, Cindy T1 - Sensoren zum Monitoring pflanzlicher Frischeprodukte T2 - Sensor+Test 2010 CY - Nuremberg, Germany DA - 2010-05-18 PY - 2010 AN - OPUS4-21717 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas T1 - Digitale Signalverarbeitung von Ultraschallmessdaten T2 - DGZfP-Jahrestagung 2010 CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-21755 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Laible, Patrick T1 - Quantitative Risstiefenbestimmung an Eisenbahnschienen mit Ultraschall T2 - DGZfP-Jahrestagung 2010 CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-21756 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mohamed, A. F. T1 - Physical and Chemical Properties of Plasma Polymerized Allyl Alcohol Thin Films T2 - Twelfth International Conference on Plasma Surface Engineering (PSE 2010) CY - Garmisch-Partenkirchen, Germany DA - 2010-09-13 PY - 2010 AN - OPUS4-21848 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Externe Qualitätssicherung im Grundwassermonitoring in analytischen Laboratorien T2 - DECHEMA Jahrestagung CY - Frankfurt am Main, Germany DA - 2010-11-22 PY - 2010 AN - OPUS4-21850 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Hyphenated techniques for the analysis of linear alkylbenzenesulfonates in technical formulation T2 - ISC 2010 CY - Valencia, Spain DA - 2010-09-12 PY - 2010 AN - OPUS4-21851 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lischka, Susanne T1 - Synthese und Reinheitsuntersuchungen 13C-markierter Standards für die Arsenspeziesanalytik mittels LC-ESI-MS T2 - 9. MS-Symposium CY - Berlin, Germany DA - 2010-09-06 PY - 2010 AN - OPUS4-21852 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bresch, Harald T1 - Nanoscale Particulate Emissions from Car-Brakes - Instrumental needs for the measurement T2 - International Conference on Workplace Aerosols CY - Karlsruhe, Germany DA - 2010-06-29 PY - 2010 AN - OPUS4-21773 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - New concept for metal-polyolefin composite interfaces T2 - MACRO 2010 Polymer Science in the Service of Society CY - Glasgow, Scotland DA - 2010-07-11 PY - 2010 AN - OPUS4-21780 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Martin T1 - Darstellung des Verpresszustandes von Spannkanälen mit 3D-Ultraschallechoverfahren: Modellierung und Experiment T2 - DGZfP-Jahrestagung CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-22847 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ewert, Uwe T1 - Neue Algorithmen zur Messung der Filmsystem-Parameter im Rahmen der Revision der Norm EN 584, Teil 1 T2 - DGZfP-Jahrestagung 2001, Zerstörungsfreie Materialprüfung, ZfP in Anwendung, Entwicklung und Forschung CY - Berlin, Germany DA - 2001-05-21 PY - 2001 AN - OPUS4-22927 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmalenberger, A. T1 - Shifts in fungal and bactrerial communities in grassland turfs suggests that fungi enhance sulfonate desulfurization T2 - 13th International Symposium on Microbial Ecology CY - Seattle, WA, USA DA - 2010-08-22 PY - 2010 AN - OPUS4-22930 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ewert, Uwe T1 - Digitale Radiographie mit Speicherfoliensystemen in der industriellen Durchstrahlungsprüfung T2 - DGZfP-Jahrestagung 2001, Zerstörungsfreie Materialprüfung, ZfP in Anwendung, Entwicklung und Forschung CY - Berlin, Germany DA - 2001-05-21 PY - 2001 AN - OPUS4-22923 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Katharina T1 - Identification of prehistoric bone and ivory materials by synchrotron radiation-induced micro X-ray CT T2 - 2nd Joint Berll and BESSY II Users Meeting CY - Berlin, Germany DA - 2010-12-09 PY - 2010 AN - OPUS4-22975 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, Christine T1 - Bilayer polymer/oxide coating for organic semiconductors N2 - Organic materials have been given much attention due to their intriguing properties that can be tailored via synthetic chemistry tor specific applications combined with their low price and fairly straight-forward large- scale synthesis. Para-hexaphenylene (p6P) nanofibers emit polarized light with a highly anisotropic emission profile, act a sub-wavelength optical waveguides, and form the basis tor a new type of miniature OLEDs. However, p6P molecules suffer reduction of luminescence intensity during photoexcitation under UV light. Such photoreaction is understood as a consequence of the interaction of the fibers with oxygen. We have developed a bilayer coating that does not change significantly the p6P spectrum but strongly reduces bleaching. This bilayer coating consists of a first layer of a stable polymer (PMMA) on top of the organic nanofibers as a protecting layer tor avoiding modifications of the p6P luminescence spectrum and as a second layer SiOx tor blocking the oxygen penetration. In this work, we show the applicability of this bilayer coating of PMMA/SiOx in prolonging the operationallifetime of field-effect transistor (FET) devices based on p6P nanofibers. The coating prevents strang degradation of transferred nanofibers on FET platforms during electrical biasing as is observed tor uncoated devices. We are currently investigating the effect of, the coating during electrically stimulated light emission experiments tram transferred fibers on transistor platforms. T2 - E-MRS ICAM IUMRS 2011 Spring Meeting; IUMRS ICAM 2011 & E-MRS / MRS Bilateral Conference on Energy CY - Nice, France DA - 2011-05-09 PY - 2011 AN - OPUS4-23013 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Illerhaus, Bernhard T1 - Scattered Radiation Grids used for Micro Computed Tomography T2 - DIR2011, 20.-22.Juni, Veranstaltung DGZfP-BAM CY - Berlin, Germany DA - 2011-06-20 PY - 2011 AN - OPUS4-23061 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - Reference coatings for thin film technology - beyond the state of the art T2 - 6th Workshop Ellipsometry CY - Berlin, Germany DA - 2011-02-02 PY - 2011 AN - OPUS4-23064 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Girard-Lauriault, Pierre-Luc T1 - Ultra shallow surface chemical characterization of plasma and vacuum-ultraviolet organic thin films by angle and excitation energy resolved XPS T2 - HZB-Joint Users Meeting CY - Berlin, Germany DA - 2010-12-09 PY - 2010 AN - OPUS4-23066 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Min, Hyegeun T1 - ToF-SIMS/Principle Component Analysis (PCA) Study on Ageing of Plasma-Deposited Allylamine Polymer and Styrene/Ethylene-Allylamine Copolymer Films T2 - 12th International Conference on Plasma Surface Engineering CY - Garmisch-Partenkirchen, Germany DA - 2010-09-13 PY - 2010 AN - OPUS4-23068 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - SR-XPS and NEXAFS characterization of layer stacks formed by self-assembly and layer-by-layer deposition exploiting coordination chemistry T2 - Joint BER II and BESSY II Users' Meeting CY - Berlin, Germany DA - 2010-12-09 PY - 2010 AN - OPUS4-23070 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Highly effective purification of carbon nanotubes by plasma-thermal annealing T2 - Inno. CNT Jahrestagung CY - Ettlingen, Germany DA - 2011-01-25 PY - 2011 AN - OPUS4-23093 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuhlbusch, T. T1 - Carbo-Safe - Sicherheit, Gesundheit und Qualität im Umgang mit CNT T2 - Inno. CNT Jahrestagung CY - Ettlingen, Germany DA - 2011-01-25 PY - 2011 AN - OPUS4-23108 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Buchberger, E. M. T1 - Energy transfer in a polymer donor/acceptor system - Analysis of distributed transfer rates from transient fluorescence data - The exponential series method T2 - 99th ACS Meeting CY - San Francisco, CA, USA DA - 1992-04-05 PY - 1992 AN - OPUS4-23109 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Huber, Alexandra T1 - Physico-chemical characterization of CNT by XPS and NMR T2 - Inno. CNT Jahrestagung CY - Ettlingen, Germany DA - 2011-01-25 PY - 2011 AN - OPUS4-23094 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Procop, Mathias T1 - Computerprogramm zu Modellierung der Spektrometerantwortfunktion eines energiedispersiven Röntgenspektrometers T2 - Fachtagung Prozessnahe Röntgenanalytik (PRORA 2007) CY - Berlin, Germany DA - 2007-11-15 PY - 2007 AN - OPUS4-16935 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Moser, H. T1 - Ecotoxicological characterization of waste: Results and experiences from a European ring test T2 - 1st International Conference, Hazardous Waste Management CY - Crete, Greece DA - 2008-10-01 PY - 2008 AN - OPUS4-17194 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Ulla T1 - Nanocrystalline Hydroxyapatite für Bone Tissue Engineering T2 - Junior Euromat 2008 CY - Lausanne, Switzerland DA - 2008-07-14 PY - 2008 AN - OPUS4-17637 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dreßler, Martin T1 - Bioceramics with bone-morphology T2 - bone tech 2008 CY - Hanover, Germany DA - 2008-11-07 PY - 2008 AN - OPUS4-17638 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meszaros, Robert T1 - Al203-Anlösung in niedrigsinternden Glasmatrixkompositen T2 - 82. Glastechnische Tagung CY - Hamelin, Germany DA - 2008-05-19 PY - 2008 AN - OPUS4-17651 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Feigl, Michael T1 - Better sol-gel coatings through improved substrate wetting T2 - Tagung "Materials Science and Engineering" CY - Nuremberg, Germany DA - 2008-09-01 PY - 2008 AN - OPUS4-17652 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - Tailored functionalized surfaces for metallized polymers T2 - MARCO 2008, Polymers at Frontiers of Science und Technology CY - Taipei, Taiwan DA - 2008-06-29 PY - 2008 AN - OPUS4-17702 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völz, Uwe T1 - Untersuchungen zur Schallausbreitung in anisotropen Schweißverbindungen von Nickellegierungen T2 - DACH-Jahrestagung 2008 der DGZfP CY - St. Gallen, Switzerland DA - 2008-04-28 PY - 2008 AN - OPUS4-17706 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krug, Sonja A1 - Torge, Manfred A1 - Bücker, Michael A1 - Birkhahn, Jürgen A1 - Scharf, Holger A1 - Witthuhn, Heike T1 - The investigation of mercury emissions from historic tin-mercury mirrors T2 - Indoor Air Quality (IAQ) 2008 CY - Vienna, Austria DA - 2008-04-16 PY - 2008 AN - OPUS4-17684 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rooch, Heidemarie T1 - Zielpräparation mittels Focused Ion Beam für TEM-Untersuchungen, FIB-Präparation an mechanisch stark verformten Oberflächen und an Schichten, bei denen hohe innere Spannungen auftreten T2 - FIB-Workshop CY - Lucerne, Switzerland DA - 2008-07-03 PY - 2008 AN - OPUS4-17685 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfennig, Anja T1 - Isothermal oxidation behavior and microstructure of the single crystal superalloy PWA 1483 at 950 C T2 - EUCOMAS 1st European Conference on Materials and Structures in Aerospace CY - Berlin, Germany DA - 2008-05-26 PY - 2008 AN - OPUS4-17686 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dutschke, Andreas T1 - Emission von gasförmigen und festen Reaktionsprodukten beim Abbrand pyrotechnischer Gegenstände T2 - 9. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 2008-11-06 PY - 2008 AN - OPUS4-17698 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Sol-gel derived TiO2 wood-inorganic composites T2 - 5th International conference on SOL-GEL Materials CY - Trzebieszowice, Poland DA - 2008-06-01 PY - 2008 AN - OPUS4-17675 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Hannes T1 - Low temperature sol-gel deposited MgF2 and TiO2 multilayer systems for optical applications T2 - 8th Conference on Solid State Chemistry CY - Bratislava, Slovakia DA - 2008-07-06 PY - 2008 AN - OPUS4-17677 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paulick, Carl T1 - Hochwertige Werkstoffe aus Standard Ausgangspulvern T2 - DKG-Jahrestagung 2008 CY - Höhr-Grenzhausen, Germany DA - 2008-05-26 PY - 2008 AN - OPUS4-17644 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tzschichholz, Grit T1 - Porous nano-composite materials with low emittance for reducing energy consumption T2 - NanoFair 2008 CY - Dresden, Germany DA - 2008-03-11 PY - 2008 AN - OPUS4-17645 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Erniedrigung der Sintertemperatur von ZrO2-Keramiken durch Zusatz von Glas T2 - DKG-Jahrestagung 2008 CY - Höhr-Grenzhausen, Germany DA - 2008-05-26 PY - 2008 AN - OPUS4-17646 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tzschichholz, Grit T1 - Röntgenrefraktometrie - eine alternative Methode zur Charakterisierung poröser Keramiken T2 - DKG-Jahrestagung 2008 CY - Höhr-Grenzhausen, Germany DA - 2008-05-26 PY - 2008 AN - OPUS4-17647 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wlodarska, M. T1 - Dielectric relaxation in diepoxy nematics at elevated temperatures T2 - 5th International Conference on Broadband Dielectric Spectroscopy and its Applications CY - Lyon, France DA - 2008-08-26 PY - 2008 AN - OPUS4-17892 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wlodarska, M. T1 - Dielectric study of cured epoxy resin with mesogenic units T2 - 5th International Conference on Broadband Dielectric Spectroscopy and its Applications CY - Lyon, France DA - 2008-08-26 PY - 2008 AN - OPUS4-17894 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - A new type of standards for scanning force microscopy T2 - NanoScale 2008 CY - Turin, Italy DA - 2008-09-22 PY - 2008 AN - OPUS4-17927 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Graf, Nora T1 - Surface chemical imaging (XPS, ToF-SIMS) of DNA microarrays T2 - AOFA 15 (Arbeitstagung Angewandte Oberflächen-Analytik) CY - Soest, Germany DA - 2008-09-08 PY - 2008 AN - OPUS4-17928 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Safety characterization of pool flames of organic peroxides T2 - 9th International IAFSS (International Association for Fire Safety Science) Symposium CY - Karlsruhe, Germany DA - 2008-09-21 PY - 2008 AN - OPUS4-17930 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Graf, Nora T1 - Surface chemical imaging (XPS, ToF-SIMS) of DNA microarrays T2 - Nano-Molecular Analysis for Emerging Technologies III & Surface Science of Biologically Important Interfaces 10 - NMAET III & SSBII 10 CY - London, England DA - 2008-11-05 PY - 2008 AN - OPUS4-17931 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - Introduction of covalently bonded flexible spacers into polymer-metal interfaces T2 - 11th International Conference on Plasma Surface Engineering CY - Garmisch-Partenkirchen, Germany DA - 2008-09-15 PY - 2008 AN - OPUS4-17910 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pawlik, Alf T1 - High-surface aluminiumfluoride and its precursor - a solid-state NMR study T2 - Gesellschaft Deutscher Chemiker CY - Regensburg, Germany DA - 2008-09-22 PY - 2008 AN - OPUS4-17955 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - König, R. A1 - Scholz, G. A1 - Kemnitz, E. T1 - Crystalline aluminium hydroxyl fluorides: Structural insights obtained by high-field solid state NMR and 27Al chemical shift trend analysis T2 - Gesellschaft Deutscher Chemiker CY - Regensburg, Germany DA - 2008-09-22 PY - 2008 AN - OPUS4-17957 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brenneis, Rudolf T1 - Kühlung und Schmierung in technischen Prozessen T2 - "Woche der Umwelt" der DBU beim Bundespräsidenten CY - Berlin, Germany DA - 2007-06-05 PY - 2007 AN - OPUS4-17940 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Menzel, Michael T1 - Mössbauer investigations of {Fe/alumogel} systems with Fe(0)-species involved in solid state reactions T2 - 50 Years after - The Mössbauer effect today and in the future, Technische Universität CY - Munich, Germany DA - 2008-10-09 PY - 2008 AN - OPUS4-17965 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Barheine, Sabrina A1 - Jäger, Christian T1 - A NMR investigation of borate incorpation in apatitic biomaterials T2 - Gesellschaft Deutscher Chemiker CY - Regensburg, Germany DA - 2008-09-22 PY - 2008 AN - OPUS4-17966 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Feigl, Michael T1 - Improving alumo sol wetting properties for easier coating applications T2 - Junior-Euromat 2008 CY - Lausanne, Switzerland DA - 2008-07-14 PY - 2008 AN - OPUS4-17266 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schwibbert, Karin T1 - The Ectoine degradation pathway in Halomonas elongata T2 - Jahrestagung der VAAM (Vereinigung für Allgemeine und Angewandte Mikrobiologie) CY - Frankfurt am Main, Germany DA - 2008-03-09 PY - 2008 AN - OPUS4-17267 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meine, Kerstin T1 - Ultraschallmikroskopie - Möglichkeiten und Grenzen in der Multilayertechnologie T2 - Symposium Hochleistungskeramik 2008 CY - Hamburg, Germany DA - 2008-02-26 PY - 2008 AN - OPUS4-17268 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Molnarne, Maria T1 - Chemical safety database - application for explosion limits of biogases T2 - AIChE Spring Meeting, 42nd Annual Loss Prevention Symposium, 4th Global Congress on Process Safety CY - New Orleans, LA, USA DA - 2008-04-06 PY - 2008 AN - OPUS4-17328 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Dielectric relaxation of ultrathin films of supported polysulfone T2 - 10th Laehnwitzseminar on Calorimetry 2008 CY - Rostock, Germany DA - 2008-06-08 PY - 2008 AN - OPUS4-17551 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Dynamics of nearly single cyanobiphenyl and cyanophenylbenzoate molecules adsorbed onto aerosil T2 - 10th Laehnwitzseminar on Calorimetry 2008 CY - Rostock, Germany DA - 2008-06-06 PY - 2008 AN - OPUS4-17552 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Procop, Mathias T1 - Modelling the response function of an EDS with a silicon detector T2 - European X-ray Spectroscopy Conference CY - Cavtat, Croatia DA - 2008-06-16 PY - 2008 AN - OPUS4-17602 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Graf, Nora T1 - Surface analysis (XPS, ToF-SIMS, NEXAFS) of organosilane functionalized substrates to be used as microarray platforms T2 - BESSY User´s Meeting CY - Berlin, Germany DA - 2007-12-06 PY - 2007 AN - OPUS4-17605 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gradt, Thomas T1 - Cryogenic vacuum tests of scaled down narrow support elements for the W7-X coil system T2 - 25th Symposium on Fusion Technology CY - Rostock, Germany DA - 2008-09-15 PY - 2008 AN - OPUS4-18129 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jörn, Daniela T1 - Behaviour of calcium alkali orthophosphate cements under simulated implantation conditions T2 - 21th Int. Symp. on Ceramics in Medicine (Bioceramics 21) CY - Búzios, Brazil DA - 2008-10-21 PY - 2008 AN - OPUS4-18100 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bielefeldt, Nicole T1 - Rapidly resorbable, temporarily mechanically stable composites for bone replacement T2 - 21th Intern. Symp. on Ceramics in Medicine (Bioceramics 21) CY - Búzios, Brazil DA - 2008-10-21 PY - 2008 AN - OPUS4-18101 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Georg T1 - Offen porige Knochen-ersatzwerkstoffe auf Basis von Calcium-Alkali-Phosphaten T2 - 4. Workshop "Biomaterialien" des AK 15 (Mineralogische und Technische Kristallo-graphie) der Dt. Ges. f. Kristallographie (DGK) CY - Halle (Saale), Germany DA - 2008-10-06 PY - 2008 AN - OPUS4-18102 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jörn, Daniela T1 - Influence of specimen preparation and particle sitze on the properties of calcium alkali orthophosphate cements T2 - Jahrestagung der Dt. Ges. f. Biomaterialien CY - Hamburg, Germany DA - 2008-11-20 PY - 2008 AN - OPUS4-18103 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tzschichholz, Grit T1 - Correlation between structured and infrared-optical properties of nano-composite materials T2 - Junior-Euromat 2008 CY - Lausanne, Switzerland DA - 2008-07-14 PY - 2008 AN - OPUS4-18105 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, T. T1 - Synthesis and properties of phosphorus-containing aromatic polysulfones T2 - Polycondensation 2008, Tokyo Institute of Technology CY - Tokyo, Japan DA - 2008-09-08 PY - 2008 AN - OPUS4-18155 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lang, Cindy T1 - On-line measurement of humidity in the agri-food chain T2 - Postharvest UNLIMITED 2008 CY - Berlin, Germany DA - 2008-11-04 PY - 2008 AN - OPUS4-18159 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niebergall, Ute T1 - Full Notch Creep Test - ISO Round Robin Test T2 - Polymer Processing Society CY - Salerno, Italy DA - 2008-06-15 PY - 2008 AN - OPUS4-18070 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Robens, E. A1 - Klobes, Peter T1 - On the correct use of the terms "mass" and "weight" T2 - XII. Workshop über die Charakterisierung von feinteiligen und porösen Festkörpern CY - Bad Soden, Germany DA - 2008-11-18 PY - 2008 AN - OPUS4-18079 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Andreas T1 - Aufbereitung von Referenzmaterialien für Validierungsringversuche T2 - Tagung Aufbereitungstechnik CY - Freiberg, Germany DA - 2008-11-12 PY - 2008 N1 - Geburtsname von Erdmann, Kerstin: Meißner, K. - Birth name of Erdmann, Kerstin: Meißner, K. AN - OPUS4-18139 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noll, Matthias T1 - Fast bacterial response in decomposition of pine-wood debris T2 - 14th International Biodeterioration and Biodegradation Symposium CY - Taormina, Italy DA - 2008-10-06 PY - 2008 AN - OPUS4-18093 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knorr, Annett T1 - Einsatz der Mikroreaktionstechnik bei der Übertragung einer 2-stufigen exothermen Gas-/Flüssigphasenreaktion vom Semibatch - in den kontinuierlichen Betrieb T2 - 9. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 2008-11-06 PY - 2008 AN - OPUS4-18931 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wirker, Ringo T1 - Ortsaufgelöste Reaktionskalorimetrie in mikrostrukturierten Reaktoren T2 - ProcessNet Jahrestagung 2008 CY - Karlsruhe, Germany DA - 2008-10-07 PY - 2008 AN - OPUS4-18932 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolff, Timo T1 - Characterization of polycapillary halflenses in two directions T2 - BESSY User Meeting 2008 CY - Berlin, Germany DA - 2008-12-04 PY - 2008 AN - OPUS4-18935 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolff, Timo T1 - Characterization of polycapillary halflenses in two directions T2 - European Conference on X-Ray Spectrometry CY - Dubrovnik, Croatia DA - 2008-06-16 PY - 2008 AN - OPUS4-18936 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Gassensorgeregelte Entbinderung keramischer Folien T2 - Symp. HLK 2009 CY - Aachen, Germany DA - 2009-03-23 PY - 2009 AN - OPUS4-18965 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knorr, Annett T1 - Kalorimetrische Untersuchung einer Ozonolysereaktion im Mikro-Fallfilmreaktor T2 - 9. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 2008-11-06 PY - 2008 AN - OPUS4-18991 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Graf, Nora T1 - Surface analytical measurements (XPS, ToF-SIMS, NEXAFS) of organosilane functionalized substrates to be used as microarray platforms T2 - 11th Status Seminar "Chip Technologies" (Dechema) CY - Frankfurt am Main, Germany DA - 2009-03-05 PY - 2009 AN - OPUS4-19028 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Graf, Nora T1 - Surface chemical Imaging (XPS, ToF-SIMS) of DNA microarrays T2 - 11th Status Seminar "Chip Technologies" (Dechema) CY - Frankfurt am Main, Germany DA - 2009-03-05 PY - 2009 AN - OPUS4-19029 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Commercial Linear AlkylbenzeneSulfonate (LAS) - Analysis by GC-FID/MS and 1H-qNMR - T2 - 5. Conference über Ionenanalyse CY - Berlin, Germany DA - 2009-03-02 PY - 2009 AN - OPUS4-19017 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Change of specific heat; thermal diffusity and thermal conductivity of a c-fibre prepreg during curing T2 - 15. Nationales Symposium SAMPE Deutschland CY - Berlin, Germany DA - 2009-02-18 PY - 2009 AN - OPUS4-18972 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Investigation of epoxy curing and determination of glass transition temperature by dynamic mechanical analysis (DMA) T2 - 15. Nationales Symposium SAMPE Deutschland CY - Berlin, Germany DA - 2009-02-18 PY - 2009 AN - OPUS4-18973 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - High selective polymer surface functionalization by using plasmas of Br-containing precursors with low ionization potential T2 - The Eleventh International Conference on Plasma Surface Engineering CY - Garmisch-Partenkirchen, Germany DA - 2009-09-15 PY - 2009 AN - OPUS4-18977 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lang, Cindy T1 - On-line measurement of humidity in the agri-food chain T2 - Doktorandenseminar Analytik CY - Attendorn, Germany DA - 2009-02-15 PY - 2009 AN - OPUS4-18985 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Huismann, Sven A1 - Korzen, Manfred T1 - Experimental and numerical study of high performance concrete columns subjected to fire loading T2 - Applications of Structural Fire Engineering CY - Prague, Czech Republic DA - 2009-02-19 PY - 2009 AN - OPUS4-18986 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noll, Matthias T1 - Changes in desulfonating bacterial communities along a natural soil chronosequence T2 - EMPO-FEMS workshop "Microbial Sulfur Metabolism" CY - Tomar, Portugal DA - 2009-03-15 PY - 2009 AN - OPUS4-19109 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Korzen, Manfred T1 - Thermal Restraint Effects on the Fire Resistance of Steel and Composite Steel and Concrete Columns T2 - International Conference APPLICATIONS OF STRUCTURAL FIRE ENGINEERING CY - Prague, Czech Republic DA - 2009-02-19 PY - 2009 AN - OPUS4-19093 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lang, Cindy T1 - Sensoren zum Monitoring des Nachernteverhaltens pflanzlicher Frischeprodukte T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-19100 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hilmes, Janine T1 - Development of a PNA-based RT-qPCR assay for detection of Legionella pneumophila T2 - Jahrestagung 2009 der Vereinigung für allgemeine und angewandte Mikrobiologie (VAAM) CY - Bochum, Germany DA - 2009-03-08 PY - 2009 AN - OPUS4-19083 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred T1 - Effects of Emissions from Materials on Stained Glass Windows T2 - EU Projekt ERA-NET "NET-HERITAGE", Deutsche Auftraktveranstaltung CY - Osnabrück, Germany DA - 2009-02-19 PY - 2009 AN - OPUS4-19075 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raschke, Silvia T1 - Changes of the proteome of Halomonas elongata in response to osmotic stress T2 - Jahrestagung 2009 der Vereinigung für allgemeine und angewandte Mikrobiologie (VAAM) CY - Bochum, Germany DA - 2009-03-08 PY - 2009 N1 - Geburtsname von Raschke, Silvia: Faßbender, S. - Birth name of Raschke, Silvia: Faßbender, S. AN - OPUS4-19078 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noll, Matthias T1 - Microbial role in the decomposition of outdoor pine wood chip piles T2 - Jahrestagung 2009 der Vereinigung für allgemeine und angewandte Mikrobiologie (VAAM) CY - Bochum, Germany DA - 2009-03-08 PY - 2009 AN - OPUS4-19079 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noll, Matthias T1 - Changes in desulfonating bacterial communities along a natural soil chronosequence T2 - Jahrestagung 2009 der Vereinigung für allgemeine und angewandte Mikrobiologie (VAAM) CY - Bochum, Germany DA - 2009-03-08 PY - 2009 AN - OPUS4-19080 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jakobs, Désirée T1 - Microbial degradation of a biocide (Cu-HDO) in soil contact T2 - Jahrestagung 2009 der Vereinigung für allgemeine und angewandte Mikrobiologie (VAAM) CY - Bochum, Germany DA - 2009-03-08 PY - 2009 AN - OPUS4-19082 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Oliver T1 - Long-term monitoring of PAH leaching from soils using laboratory scale lysimeters T2 - Nove Care 2009 - Conference Novel Methods for Subsurface Characterization and Monitoring: From Theorie to Practice CY - Leipzig, Germany DA - 2009-05-12 PY - 2009 AN - OPUS4-19132 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosner, Martin T1 - Boron isotopes - a new tracer for the origin and authenticity of food T2 - DGMS-Jahrestagung CY - Konstanz, Germany DA - 2009-03-08 PY - 2009 AN - OPUS4-19134 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Influence of film thickness and optical constants on femtosecond laser-induced damage of hydrongenated amorphous carbon films T2 - European Materials Research Society (EMRS), Spring Meeting 2009 CY - Strasbourg, France DA - 2009-06-08 PY - 2009 AN - OPUS4-19140 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ruthemeier, Ingo T1 - Das neue Gesetz über die Schaffung einer nationalen Akkreditierungsstelle T2 - 10. Jahrestagung Trinkwasserringversuche CY - Osnabrück, Germany DA - 2009-03-03 PY - 2009 AN - OPUS4-19141 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mann, Guido T1 - Influence of core diameter and coating material on nanosecond laser-induced damage threshold of optical multimode fibers T2 - European Materials Research Society (EMRS) Spring Meeting 2009, Symposium Q "Laser and Plasma Processing for Advanced Materials" CY - Strasbourg, France DA - 2009-06-08 PY - 2009 AN - OPUS4-19218 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matschulat, Andrea T1 - NIR-SERS probes for in vitro and in vivo bioanalytics T2 - GdCH - Doktorandentagung CY - Attendorn, Germany DA - 2009-02-15 PY - 2009 AN - OPUS4-19198 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merk, Virginia T1 - Entwicklung und Charakterisierung neuer SERS-Substrate für die Analytik T2 - 3. Doktorandentagung CY - Attendorn, Germany DA - 2009-02-15 PY - 2009 N1 - Geburtsname von Merk, Virginia: Joseph, V. - Birth name of Merk, Virginia: Joseph, V. AN - OPUS4-19201 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radnik, J. T1 - New Experimental Setup for On-line Monitoring of the Synthesis of Oxides at the µ-spot Beamline T2 - 26th BESSY Users' Meeting CY - Berlin, Germany DA - 2007-12-06 PY - 2007 AN - OPUS4-19192 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tscheuschner, Frank T1 - Informationssystem Datenbank GEFAHRGUT - Datenbank GEFAHRGUT jetzt in JAVA T2 - Sitzung der Expertengruppe Verpackung und Transport der Europäischen Vereinigung für Pflanzenschutzmittel "PTEG of ECPA - Packaging & Transport Expert Group of European Crop Protection Association", BAM CY - Berlin, Germany DA - 2009-03-25 PY - 2009 AN - OPUS4-19234 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Determination of Tributyltin (TBT) at sub-ppt level in waters samples T2 - TraceSpec 2009 CY - Mainz, Germany DA - 2009-09-15 PY - 2009 AN - OPUS4-19977 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Commercial Linear Alkylbenzene Sulonates (LAS)-Analysis by GC-FID/MS- T2 - WetPol 2009 CY - Barcelona, Spain DA - 2009-09-21 PY - 2009 AN - OPUS4-19978 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - High Spped Laser Scribe Systems fpr Large Area Thin Film Solar Cells Manufacturing T2 - 24th European Photovoltaic Solar Energy Conference CY - Hamburg, Germany DA - 2009-09-21 PY - 2009 AN - OPUS4-20047 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Nassmechanische Aufbereitung von Photovoltaik-Dünnschichtmodulen: Erste Ergebnisse eines AiF-Projektes T2 - Jahrestagung Aufbereitung und Recycling CY - Freiberg, Germany DA - 2009-11-11 PY - 2009 N1 - Geburtsname von Erdmann, Kerstin: Meißner, K. - Birth name of Erdmann, Kerstin: Meißner, K. AN - OPUS4-20031 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drescher, Daniela T1 - Raman spectroscopy on nanoparticle-influenced cellular systems T2 - Jubiläumssymposium Licht-Materialien-Modelle "100 Jahre Innovation aus Adlershof" CY - Berlin, Germany DA - 2009-09-07 PY - 2009 AN - OPUS4-20032 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mohamed, Alaa T1 - Physical and Chemical Properties of Plasma Polymerized Acrylic Acid Thin Films T2 - 8th International Conference on Advanced Polymers via Macromolecular Engineering (APME) CY - Dresden, Germany DA - 2009-10-04 PY - 2009 AN - OPUS4-19983 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raedel, Martina T1 - Colored Glass Adhesives for the Restoration of Stained Glass Windows T2 - Internationale Tagung "Forum for the Conservation and Restoration of Stained Glass Windows" CY - New York City, NY, USA DA - 2009-06-01 PY - 2009 AN - OPUS4-19984 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Huber, Alexandra T1 - Solid State NMR study of multiwalled carbon nanotubes T2 - GDCh Tagung Magnetische Resonanz 2009 CY - Dresden, Germany DA - 2009-09-21 PY - 2009 AN - OPUS4-19996 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolf, J T1 - Recycling von Photovoltaik-Dünnschichtmodulen mit Hilfe eines Vakuum-Saugstrahlverfahrens T2 - Jahrestagung Aufbereitung und Recycling CY - Freiberg, Germany DA - 2009-11-11 PY - 2009 N1 - Geburtsname von Erdmann, Kerstin: Meißner, K. - Birth name of Erdmann, Kerstin: Meißner, K. AN - OPUS4-20033 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drescher, Daniela T1 - Combined intracellular SERS and cytotoxicity studies after uptake of silica nanoparticles T2 - FTIR Workshop, Robert-Koch-Institut CY - Berlin, Germany DA - 2009-10-15 PY - 2009 AN - OPUS4-20034 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Symietz, Christian T1 - Fixierung resorbierbarer Knochenersatzkeramik auf Ti6AI4V- Implantatmaterial mittels Femtosekundenlaser T2 - 7. Thüringer Biomaterial-Kolloquium CY - Friedrichroda, Germany DA - 2009-09-17 PY - 2009 AN - OPUS4-20037 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liebner, Christian T1 - Maximum safe diameters of micro capillaries in ethyleneoxide process T2 - 6th World Congress on Oxidation Catalysis CY - Lille, France DA - 2009-07-05 PY - 2009 AN - OPUS4-20009 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Perret, Birgit T1 - SILICON ACRYLATE RUBBERS AS AN ALTERNATIVE FOR ACRYLONITRILE-BUTADIENE-STYRNE IN HALOGENFREE FLAME RETARDED POLYCARBONATE BLENDS T2 - FRPM'09 12th European Meeting on Fire Retardant Polymers CY - Poznan, Poland DA - 2009-08-31 PY - 2009 AN - OPUS4-20012 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hattermann, Hilke T1 - Sol-gel coatings with embedded inorganic fullerene-like tungsten disulfide T2 - Nano Tech Europe 2009 CY - Berlin, Germany DA - 2009-10-28 PY - 2009 AN - OPUS4-19943 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frunza, L. T1 - Broadband Dielectric and Neutron Spectroscopy on Nanoconfined Liquid Crystals T2 - 6th International Discussion Meeting Relaxation in Complex Systems CY - Rome, Italy DA - 2009-08-30 PY - 2009 AN - OPUS4-19949 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völz, Uwe T1 - Visualization of Sound Propagation in Solids Using Electrodynamic Probes T2 - IEEE International Ultrasonics Symposium CY - Rome, Italy DA - 2009-09-20 PY - 2009 AN - OPUS4-19950 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas T1 - The Glassy Rail - Advanced Ultrasonic Rail Inspection T2 - IEEE International Ultrasonics Symposium CY - Rome, Italy DA - 2009-09-20 PY - 2009 AN - OPUS4-19951 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wacker, G. T1 - Anwendung der RFA zur Bestimmung prozessrelevanter Elemente in Sekundärbrennstoffen T2 - PRORA 2009, Fachtagung prozessnahe Röntgenanalytik CY - Berlin, Germany DA - 2009-11-26 PY - 2009 AN - OPUS4-19952 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina T1 - Modulare Analyse der Zuverlässigkeit von ZfP-Systemen mit dem Werkzeug der Systemtheorie - Eine gute Balance zwischen Sicherheit und Ökonomie N2 - Untersucht wird die Modulare Validierung, die Mechanisierte Durchstrahlungsprüfung und die Wirbelstromprüfung an hoch beanspruchten Teilen aus der Luftfahrt. T2 - DGZfP-JAHRESTAGUNG 2002 CY - Weimar, Germany DA - 06.05.2002 PY - 2002 AN - OPUS4-19972 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merk, Virginia T1 - Design ans characterization of new SERS substrates for analytical applications T2 - FTIR-Workshop "FTIR spectroscopy in Microbiological and Medical Diagnostics" CY - Berlin, Germany DA - 2009-10-15 PY - 2009 N1 - Geburtsname von Merk, Virginia: Joseph, V. - Birth name of Merk, Virginia: Joseph, V. AN - OPUS4-20111 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bremser, Wolfram T1 - Certification of microbiological reference materials in the BioBall format T2 - Int. Conf. on Biological and Environmental Reference Materials BERM12 CY - Oxford, England DA - 2009-07-07 PY - 2009 AN - OPUS4-20112 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Femtosecond laser-induced ablation of dielectrics T2 - Topical Meeting "Emerging Trends and Novel Materials in Photonics" of the International Comission for Optics CY - Delphi, Greece DA - 2009-10-07 PY - 2009 AN - OPUS4-20087 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kervalishvili, Guram N. T1 - FEM modeling of heat transfer in the vicinity of vertical surface cracks using the local thermal excitation T2 - Thermographie-Kolloquium 2009 CY - Stuttgart, Germany DA - 2009-10-08 PY - 2009 AN - OPUS4-20055 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krahl, Thoralf T1 - Predicting Phase Compositions of Samples in the Ternary System Ca10(K,Na)(PO4)7 - Ca2KNa(PO4)2 - Ca2P2O7 by 31P MAS NMR T2 - GDCh Tagung Magnetische Resonanz 2009 CY - Dresden, Germany DA - 2009-09-21 PY - 2009 AN - OPUS4-20065 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - Imaging Surface Analysis: Noise vs. Lateral Resolution T2 - 13th European Conference on Applications on Surface and Interface Analysis CY - Antalya, Turkey DA - 2009-10-18 PY - 2009 AN - OPUS4-20128 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Qian, H. T1 - Hierachical composites reinforced with carbon nanotube grafted fibres T2 - MC 8: ADVANCING MATERIALS BY CHEMICAL DESIGN CY - London, England DA - 2007-05-02 PY - 2007 AN - OPUS4-20121 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Staude, Andreas T1 - Dimensionelles Messen von Mikrobauteilen mit Synchrotron-CT an der BAMline bei BESSY II T2 - SNI2010 CY - Berlin, Germany DA - 2010-02-24 PY - 2010 AN - OPUS4-20184 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wosniok, Aleksander T1 - Distributed Fibre Optic Sensor System for Temperature and Strain Monitoring Based on Brillouin Optical-Fibre Frequency-Domain Analysis T2 - Eurosensors XXIII 2009 CY - Lausanne, Switzerland DA - 2009-09-06 PY - 2009 AN - OPUS4-20188 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gründer, Klaus-Peter T1 - Bewegungs- und Verformungsanalyse unter Fallbeanspruchungen N2 - Diese Untersuchung enthält die Qualifizierung eines Laservibrometers, die Kinematik in Fallbeanspruchung und das Messverfahren, den Prüfstand und Proben. T2 - Tag der offenen Tür der BAM im Rahmen der Initiative "Deutschland, Land der Ideen" CY - Horstwalde, Germany DA - 09.09.2009 PY - 2009 AN - OPUS4-20191 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gross, Thomas T1 - Inter-laboratory comparison of chemical derivatization XPS: OH Groups at plasma oxidized polypropylene T2 - ECASIA 09-13th European Conference on Application of Surface and Interface Analysis CY - Antalya, Turkey DA - 2009-10-18 PY - 2009 AN - OPUS4-20202 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völz, Uwe T1 - Visualization of Sound Propagation with Electrodynamic Probes T2 - 5th International Workshop Non-Destructive Testing in Progress CY - Prague, Czech Republic DA - 2009-10-12 PY - 2009 AN - OPUS4-20167 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schlichting, Joachim T1 - Defect Sizing by Local Excitation Thermography T2 - 5th International Workshop Non-Destructive Testing in Progress CY - Prague, Czech Republic DA - 2009-10-12 PY - 2009 AN - OPUS4-20155 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Torsionspendelmessungen an PC-Stäben zur Bestimmung eines Standards für den Schubmodul T2 - Gefta Jahrestagung CY - Giessen, Germany DA - 2009-10-07 PY - 2009 AN - OPUS4-20161 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dreßler, Martin T1 - Resorbable ceramics scaffolds with bone-like morphology T2 - Rapid Prototyping in Regenerative Medicine at the 4th Fraunhofer Life Science Symposium CY - Leipzig, Germany DA - 2009-10-29 PY - 2009 AN - OPUS4-20205 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naghib Zadeh, Hamid T1 - Co-Firing of Barium Titanate Based Capacitors with LTCC-Dielectrics, Ag-electrodes and Ferrites at 900°C T2 - Junior Euromat CY - Lausanne, Switzerland DA - 2008-07-14 PY - 2008 AN - OPUS4-20208 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaal, Mate T1 - Detection of Flaws with Lamb Waves and Air-Coupled Ultrasound T2 - 5th International Workshop NDT in Progress CY - Prague, Czech Republic DA - 2009-10-12 PY - 2009 AN - OPUS4-20292 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Suhendra, Suhendra T1 - Underground Coal Fire Extinction Model using Coupled Heat and Mass Transfer Model in Porous Media T2 - COMSOL Multiphysic Konferenz CY - Milan, Italy DA - 2009-10-13 PY - 2009 AN - OPUS4-20275 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mielentz, Frank T1 - Optimierung von Ultraschall-Prüfkopf-Arrays für die zerstörungsfreie Prüfung im Bauwesen mithilfe von Modellierungen T2 - DGZfP-Jahrestagung CY - Münster, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-20304 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maiwald, Michael T1 - Die aktualisierte Technologie - Roadmap "Prozess-Sensoren 2015+" T2 - Arbeitskreis Prozessanalytik CY - Göttingen, Germany DA - 2009-11-20 PY - 2009 AN - OPUS4-20305 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten T1 - Characterisation of Shock-absorbing Components under Impact Loading T2 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading CY - Brussels, Belgium DA - 2009-09-07 PY - 2009 AN - OPUS4-20314 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Martin, Tina T1 - Complex Resistivity on Wood T2 - International Workshop on Induced Polarization in Near-Surface Geophysics CY - Bonn, Germany DA - 2009-09-30 PY - 2009 AN - OPUS4-20295 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Antes, Jürgen T1 - Reaktionskalorimetrie in Mikroreaktoren: Schnelles Reaktionsscreening und Prozessdesign T2 - MikroSystem Technik-Kongress CY - Berlin, Germany DA - 2009-10-12 PY - 2009 AN - OPUS4-20324 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäntig, L. T1 - Multiplexed probing of antibodies using LA-ICP-MS T2 - 18th International Mass Spectrometry Conference CY - Bremen, Germany DA - 2009-08-30 PY - 2009 AN - OPUS4-20385 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Portella, Pedro Dolabella T1 - Der Beitrag der BAM zur Sicherheitstechnik am Beispiel der Schadensanalyse von Eisenbahnkomponenten T2 - Seminar im Fachbereich Maschinenbau/Sicherheitstechnik der Bergischen Universität Wuppertal CY - Wuppertal, Germany DA - 2010-06-07 PY - 2010 AN - OPUS4-20404 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prietzel, Claudia T1 - TEM investigations of a friction film on a brake disc T2 - Microscopy Conference 2009 CY - Graz, Austria DA - 2009-08-30 PY - 2009 AN - OPUS4-20405 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sarmiento Klapper, Helmuth T1 - Interpretation of electrochemical noise signals arising from the pitting corrosion of stainless steels T2 - EUROCORR 2009 CY - Nice, France DA - 2009-09-06 PY - 2009 AN - OPUS4-20409 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mann, Guido T1 - Influence of core diameter and coating material on nanosecond laser-induced damage threshold of optical multicode fibers T2 - 10. Konferenz der ESG und 84. Glastechnische Tagung CY - Magdeburg, Germany DA - 2010-05-30 PY - 2010 AN - OPUS4-20891 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühn, Andreas T1 - Neue Wege in der Analytik oberflächenmodifizierter Stähle T2 - 4. Interdiszipinäres Doktorandenseminar Analytik CY - Attendorn, Germany DA - 2010-02-21 PY - 2010 AN - OPUS4-20944 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Purohit, Purv T1 - Dielectric investigation of nanocomposites based on Poly(methyl methacrylate) and Polyhedral oligomeric silesquioxanes. T2 - Deutsche Physikalische Gesellschaft (DPG), Spring Meeting 2010 CY - Regensburg, Germany DA - 2010-03-20 PY - 2010 AN - OPUS4-20946 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Acosta, B. G. T1 - Molecular mobility of nematic E7 confined to molecular sieves of different pore size T2 - CONFIT 2010 CY - Grenoble, France DA - 2010-03-03 PY - 2010 AN - OPUS4-20947 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frunza, S. T1 - Dynamics of Cyanophenyl Alkylbenzoate Molecules Adsorbed onto Aerosil: Constrained Dynamic Glass Transition T2 - CONFIT 2010 CY - Grenoble, France DA - 2010-03-03 PY - 2010 AN - OPUS4-20948 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wunderlich, C. T1 - Auswertung von Ringversuchen zur Vergleichbarkeit von Pfahlintegritätsprüfungen T2 - Fachtagung Bauwerksdiagnose CY - Berlin, Germany DA - 2010-02-18 PY - 2010 AN - OPUS4-20950 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Qualitätssicherung von Pfahlwänden mit der Ultraschallmethode - eine Machbarkeitsstudie T2 - Fachtagung Bauwerksdiagnose CY - Berlin, Germany DA - 2010-02-18 PY - 2010 AN - OPUS4-20951 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quercetti, Thomas T1 - The unyielding impact target of the 200 tons BAM drop test facility T2 - RAMTransport 2009 CY - Manchester, England DA - 2009-05-12 PY - 2009 AN - OPUS4-20955 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - von Chrzanowski, Lars T1 - Terahertz Time Domain Spectroscopy - Non Destructive Testing of Dangerous Liquids T2 - International Forum on Terahertz Spectroscopy and Imaging, 4th Workshop on Terahertz Technology CY - Kaiserslautern, Germany DA - 2010-03-02 PY - 2010 AN - OPUS4-20960 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuhlich, Paul T1 - New disinfection by-product of polycyclic musk AHTN T2 - Metabolomics and More CY - Freising, Germany DA - 2010-03-10 PY - 2010 AN - OPUS4-20961 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Transient changes of the optical properties of solids during femtosecond laser pulse irradiation and its implications for the formation of lase-induced periodic surface structures T2 - European Materials Research Society (EMRS) Spring Meeting, Symposium R "Laser processing an diagnostics for micro and nano applications" CY - Strasbourg, France DA - 2010-06-07 PY - 2010 AN - OPUS4-20993 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Negendank, Detlef A1 - Lohse, Volkmar T1 - Gaswarnsysteme in der Sicherheitstechnik - Anforderungen an Messfunktion und funktionale Sicherheit T2 - 12. BAM/PTB-Kolloquium zu Fragen der chemischen und physikalischen Sicherheitstechnik, BAM CY - Berlin, Germany DA - 2010-06-15 PY - 2010 AN - OPUS4-21006 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Kontrolle der Härtung bei reaktiven Formmassen und Faserverbundbauteilen T2 - 2. Wildauer Duromer-Tagung CY - Wildau, Germany DA - 2010-03-11 PY - 2010 AN - OPUS4-21015 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maierhofer, Christiane T1 - Kombination der aktiven Thermografie mit laserbasierten Verfahren zur Erfassung von 3D-Geometrien in der Denkmalpflege T2 - Fachtagung Bauwerksdiagnose CY - Berlin, Germany DA - 2010-02-18 PY - 2010 AN - OPUS4-21024 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krankenhagen, Rainer T1 - Thermografie am Schichtsystem Putz auf Beton im Labor und in der Praxis T2 - Fachtagung Bauwerksdiagnose CY - Berlin, Germany DA - 2010-02-18 PY - 2010 AN - OPUS4-21025 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bras, A. T1 - Confining Effects in the Molecular Dynamics of Ibuprofen investigated by Dielectric Relaxation Spectroscopy T2 - Confit 2010 CY - Grenoble, France DA - 2010-03-03 PY - 2010 AN - OPUS4-21028 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fujisawa, Kyosuke T1 - Disposal Container Safety Assessment - The Comprehensive Performance Evaluation of a "YOyushindo Disposal" Waste Container by Drop Test T2 - Waste Management Symposia 2010 CY - Phoenix, AZ, USA DA - 2010-03-07 PY - 2010 AN - OPUS4-20965 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quercetti, Thomas T1 - Disposal Container Safety Assessment - Drop Tests with a "YOYUSHINDO-DISPOSAL" Waste Container onto a Concrete Target T2 - Waste Management Symposia 2010 CY - Phoenix, AZ, USA DA - 2010-03-07 PY - 2010 AN - OPUS4-20966 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kamenz, C. T1 - The true nature of the eurypterid "horn organ" T2 - 53rd Annual Meeting of the Palaeontological Association CY - Birmingham, England DA - 2009-12-13 PY - 2009 AN - OPUS4-20970 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weißhaupt, Petra T1 - Exploring nitrogen sources of wood rotting basidiomycetes T2 - Jahrestagung der Vereinigung für allgemeine und angewandte Mikrobiologie (VAAM) CY - Hanover, Germany DA - 2010-03-28 PY - 2010 AN - OPUS4-21111 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noll, Matthias T1 - Interactions of wood rotting basidiomycetes and diazotrophs. T2 - Jahrestagung der Vereinigung für allgemeine und angewandte Mikrobiologie (VAAM) CY - Hanover, Germany DA - 2010-03-28 PY - 2010 AN - OPUS4-21112 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fischer, J. T1 - Maximum safe diameters of microcapillaries for a stoichiometric ethene/oxygen mixture T2 - IMRET 11, 11th International Conference on Microreaction Technology CY - Kyoto, Japan DA - 2010-03-08 PY - 2010 AN - OPUS4-21121 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esslinger, Susanne T1 - Enantio-specific Determination of HBCD in Fish und Seafood from a Norwegian Fjord T2 - 1st Kiel Food Science Symposium 2010 CY - Kiel, Germany DA - 2010-05-18 PY - 2010 AN - OPUS4-21093 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esslinger, Susanne T1 - Levels and Trends of Hexabromocyclododecane in Eggs of Herring Gull (1988-2008) fromm the German coast T2 - 1st Kiel Food Science Symposium 2010 CY - Kiel, Germany DA - 2010-05-18 PY - 2010 AN - OPUS4-21097 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Shokouhi, Parisa T1 - Nondestructive Evaluation of the State of Damage in Concrete under Uniaxial Compression T2 - QNDE- Review of Progress in Quantitative NDE CY - Kingston, RI, USA DA - 2009-07-26 PY - 2009 AN - OPUS4-21059 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Martin, Tina T1 - Untersuchungen zur Detektion von Granitgrenzsteinen mit Georadar T2 - 70. Jahrestagung der Deutschen Geophysikalischen Gesellschaft DGG CY - Bochum, Germany DA - 2010-03-15 PY - 2010 AN - OPUS4-21062 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marchetti, Barbara T1 - Concept of a THz Ellipsometer to derive the optical constants of liquids T2 - 456. WE-Heraeus Seminar: THz Radiation: Generation, Detection and Applications CY - Bad Honnef, Germany DA - 2010-04-18 PY - 2010 AN - OPUS4-21176 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - von Chrzanowski, Lars T1 - TRANSMISSION EXPERIMENTS OF POLAR AND NON POLAR LIQUIDS WITH TERAHERTZ TIME DOMAIN SPECTROSKOPY T2 - 456. WE-Heraeus Seminar: THz Radiation: Generation, Detection and Applications CY - Bad Honnef, Germany DA - 2010-04-18 PY - 2010 AN - OPUS4-21155 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - Niedrig sinternde LTCC-Werkstoffe für mikrosystemtechnische Anwendungen T2 - DKG-Jahrestagung u. Symposium Hochleistungskeramik CY - Hermsdorf (Thuringia), Germany DA - 2010-03-22 PY - 2010 AN - OPUS4-21143 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Ergebnisse eines Ringversuches zur Partikelgrößenbestimmung an wässrigen Nanopulver-Suspensionen mit dem Ultraschallspektrometer DT1200 T2 - DKG-Jahrestagung CY - Hermsdorf (Thuringia), Germany DA - 2010-03-22 PY - 2010 AN - OPUS4-21144 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ried, Peter T1 - Application of nanopowders as SOFC cathode layers T2 - DKG-Jahrestagung u. Symposium Hochleistungskeramik CY - Hermsdorf (Thuringia), Germany DA - 2010-03-22 PY - 2010 AN - OPUS4-21145 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Antes, Jürgen T1 - Spatially-resolved heat flow measurements in microsystems: Powerful tool for thermokinetic Studies T2 - IMRET11, 11th International Conference on Microreaction Technology CY - Kyoto, Japan DA - 2010-03-08 PY - 2010 AN - OPUS4-21148 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wirker, Ringo T1 - Risk analysis for the ozonlysis of cis-cyclooctene: stierred tank versus micro reactor T2 - IMRET11, 11th International Conference on Microreaction Technology CY - Kyoto, Japan DA - 2010-03-08 PY - 2010 AN - OPUS4-21149 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naghib Zadeh, Hamid T1 - Hoch dielektrische Bariumtitanat-Werkstoffe mit LTCC kompatibler Sintertemperatur T2 - DKG-Jahrestagung u. Symposium Hochleistungskeramik CY - Hermsdorf (Thuringia), Germany DA - 2010-03-22 PY - 2010 AN - OPUS4-21141 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dutschke, Andreas T1 - Systematische Emissionsanalyse von Indoorpyrotechnik mit einer eigens dafür entwickelten Messapparatur T2 - 12. Kolloquium zu Fragen der chemischen und physikalischen Sicherheitstechnik, BAM/PTB CY - Berlin, Germany DA - 2010-06-15 PY - 2010 AN - OPUS4-21285 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckmann, Jörg T1 - Time of Flight Diffraction-Technik (ToFD) mit THz-Strahlung zur Untersuchung von Kunststoffobjekten T2 - DGZfP-Jahrestagung 2010 CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-21245 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Vehicle dynamics and dynamic excitation forces of railway induced ground vibration T2 - IAVSD 09 International Symposium on Dynamics of Vehicles on Roads and Tracks CY - Stockholm, Sweden DA - 2009-08-17 PY - 2009 AN - OPUS4-21246 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Werner, Jan T1 - Zuständige Behörde und was nun? Verordnungen handhabbar gestalten T2 - Behörden-ERFA, BAM CY - Berlin, Germany DA - 2010-05-10 PY - 2010 N1 - Geburtsname von Pagenkopf, Marion: Nitsche, M. - Birth name of Pagenkopf, Marion: Nitsche, M. AN - OPUS4-21255 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hanelt, Sven T1 - Systematic study of Lewis acid-catalyzed bromination and bromoalkylation of multi-walled carbon nanotubes T2 - International Meeting on the Chemistry of Nanotubes and Graphene "ChemOnTubes" CY - Arcachon, France DA - 2010-04-11 PY - 2010 AN - OPUS4-21261 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Nanostructuring of solid surfaces basec on laser-induced periodic surface structures (LIPSS): recent experimental and theoretical approaches T2 - Poster-Session im Rahmen des deutsch-französischen Kolloquiums "French-German Research: 50 years In The Light Of The Laser" CY - Berlin, Germany DA - 2010-11-05 PY - 2010 AN - OPUS4-22324 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Franz-Georg T1 - Increasing Materials Efficiency in Industry T2 - EIONET Workshop CY - Berlin, Germany DA - 2010-11-10 PY - 2010 AN - OPUS4-22387 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esslinger, Susanne T1 - Levels and Trends of Hexabromocyclododecane in Eggs of Herring Gull (1988 - 2008) from the German coast T2 - EUROPEAN - ESBs Environmental Speciern Bank Workshop CY - Berlin, Germany DA - 2010-06-21 PY - 2010 AN - OPUS4-22322 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Sebastian T1 - Mikrostrukturreaktoren für heterogen katalysierte Selektivoxidationen im Explosionsbereich T2 - 10. Fachtagung Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen, Germany DA - 2010-11-04 PY - 2010 AN - OPUS4-22366 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malow, Marcus T1 - Sind DSC Experimente geeignet, um die thermische Stabilität von Dilauroylperoxid vorherzusagen? T2 - 10. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 2010-11-04 PY - 2010 AN - OPUS4-22369 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilder, Constanze T1 - Structure-Integrated Fibre Optic AE Sensor for Concrete Pile Testing and Monitoring T2 - Photonics 2010, International Conference on Fiber Optics and Photonics CY - Guwahati, India DA - 2010-12-11 PY - 2010 AN - OPUS4-22420 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schukar, Vivien T1 - Experimental Validation Technique for Strain Transfer Characterisation of Fibre Bragg Grating based Strain Sensors N2 - This examination deals with the validation faciliy KALFOS and the ESPI reference system. T2 - Photonics 2010, International Conference on Fiber Optics and Photonics CY - Guwahati, India DA - 11.12.2010 PY - 2010 AN - OPUS4-22421 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Oliver T1 - Wet mechanical recycling of thin-film solar cells T2 - 2nd German-Polish Forum on Eco-Innovation: Fostering R & C collaboration for a change CY - Poznan, Poland DA - 2010-11-24 PY - 2010 N1 - Geburtsname von Erdmann, Kerstin: Meißner, K. - Birth name of Erdmann, Kerstin: Meißner, K. AN - OPUS4-22477 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lischka, Susanne T1 - Development of certified isotopic calibrants for the analysis of organic arsenic species with LC-ESI-MS T2 - The Future of Reference Materials - Science and Innovation CY - Geel, Belgium DA - 2010-11-23 PY - 2010 AN - OPUS4-22456 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Determination of Tributyltin (TBT) at Sub-ppt Level in Whole Water Samples T2 - The Future of Reference Materials - Science and Innovation - IRMM CY - Geel, Belgium DA - 2010-11-23 PY - 2010 AN - OPUS4-22457 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Subaric-Leitis, Andreas T1 - Characteristic Quality Parameters of Measurement - Verification and Calibration of Material Testing Machines T2 - IMEKO 2010 TC3, TC5 and TC22 Conferences CY - Pattaya, Thailand DA - 2010-11-22 PY - 2010 AN - OPUS4-22462 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Durchstrahlungsverfahren - ein komplexer Einblick in Objekte, ohne sie zu zerlegen T2 - Archäometrie und Denkmalpflege 2010, Jahrestagung im Deutschen Bergbau-Museum Bochum CY - Bochum, Germany DA - 2010-09-15 PY - 2010 AN - OPUS4-22526 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - EFNDT Arbeitsgruppe 5: ZfP für die öffentliche und technische Sicherheit T2 - DGZfP-Jahrestagung 2010, ZfP in Forschung, Entwicklung und Anwendung CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-22527 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friese, Martin T1 - Erfolgskontrolle von Rissinjektionen durch Ultraschallmessungen T2 - Fachtagung Bauwerksdiagnose CY - Berlin, Germany DA - 2010-02-18 PY - 2010 AN - OPUS4-22560 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Development and validation of a single collector ICPMS procedure for the determination of boron isotopic variations in food and water samples T2 - 9. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse, 22. ICP-MS Anwendertreffen CY - Berlin, Germany DA - 2010-09-06 PY - 2010 AN - OPUS4-22562 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiedenbeck, M. T1 - Tourmaline reference materials for the in situ determination of lithium isotope composition T2 - 22. ICP-MS Anwendertreffen CY - Berlin, Germany DA - 2010-09-06 PY - 2010 AN - OPUS4-22572 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Milmann, Boris T1 - Improvement of the near field resolution of ultrasound probes T2 - 10th European Conference on NDT (ECNDT) CY - Moscow, Russia DA - 2010-06-07 PY - 2010 AN - OPUS4-22619 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jechow, Mirko T1 - Die richtige Auswahl von Vorder- und Hinterfolien für die Computer-Radiographie mit Speicherfolien T2 - DGZfP-Jahrestagung 2010 CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-22633 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hünert, Daniela T1 - Carburization and Oxidation of Power Plant Steels under Oxyfuel-Conditions N2 - Modern CO2-reduced power plants with Oxyfuel-Combustion operate with gas compositions of high CO2 partial pressure and steam (Boiler, Recycling). The corrosion process occurring under such service conditions is different from that under current conditions with air combustion. The effect of temperature, pressure, chromium content on the corrosion reaction of typical power plant steels in CO2 -H2O and CO-H2O-O2 was investigated. T2 - 3rd World Materials Research Institute Forum & Energy Symposium (WMRIF) CY - Gaithersburg, MD, USA DA - 21.06.2009 PY - 2009 AN - OPUS4-22625 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Strukturmerkmale im Holz - radiologisch gesehen T2 - DGZfP-Jahrestagung 2010, ZfP in Forschung, Entwicklung und Anwendung CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-22626 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koshkina, Olga T1 - Fluorescent Dye-labeled polyorganosiloxane nanospheres for biomedical applications T2 - 7th International Conference on Biomedical Applications of Nanotechnology CY - Berlin, Germany DA - 2010-12-02 PY - 2010 AN - OPUS4-22717 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Wencke T1 - Corrosion behaviour of 9-12% Cr steels under oxyfuel conditions T2 - Eurocorr 2009 CY - Nice, France DA - 2009-09-06 PY - 2009 AN - OPUS4-22675 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Wencke T1 - Material loss of superheater tubes in atmospheres containing high CO2 T2 - Dechema-Workshop CY - Frankfurt am Main, Germany DA - 2009-09-30 PY - 2009 AN - OPUS4-22677 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dörfel, Ilona T1 - Vanadium and chromium containing precipitates in heat resistant steel T92 T2 - "Current Developments in TEM" (JEOL user meeting) CY - Freiberg, Germany DA - 10.03.2011 PY - 2011 AN - OPUS4-22678 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Cristol-Bulthé, A.-L. T1 - Multiscale characterisation of coupling between contact localisation and friction mechanisms T2 - 6th European Conference on Braking CY - Lille, France DA - 2010-11-24 PY - 2010 AN - OPUS4-22679 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drescher, Daniela T1 - Investigation of cytotoxicity of silica nanoparticles using viability tetsts and surface-enhanced Raman spectroscopy T2 - Nanobio International 2010 CY - Zurich, Switzerland DA - 2010-09-24 PY - 2010 AN - OPUS4-22667 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ostermann, Markus T1 - Das neue ABS Referenzmaterial BAM-H010 für die Untersuchung von Kunststoffen mit Röntgenfluoreszenz T2 - AK Prozessanalytik 2010 CY - Waldbronn, Germany DA - 2010-11-08 PY - 2010 AN - OPUS4-22672 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paulick, Carl T1 - Fügen von Metall/ Keramikbauteilen mit direkt eingesinterten Elektroden T2 - Jahrestagung der DKG CY - Hermsdorf (Thuringia), Germany DA - 2010-03-22 PY - 2010 AN - OPUS4-22779 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günzel, Stephan T1 - BETRIEBSFESTIGKEIT KURZFASERVERSTÄRKTER THERMOPLASTE - EIN NEUES FASERVERBUND-ORIENTIERTES AUSLEGUNGSKONZEPT UNTER BERÜCKSICHTIGUNG DES SCHÄDIGUNGSMECHANISMUS T2 - 37. Tagung des DVM-Arbeitskreises Betriebsfestigkeit: "Auslegungs- und Absicherungskonzepte der Betriebsfestigkeit - Potenziale und Risiken" CY - Munich, Germany DA - 2010-10-06 PY - 2010 AN - OPUS4-22768 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Redmer, Bernhard T1 - Gantry Gate Based X-Ray Computed Tomography in Aerospace Industry T2 - 10th European Conference on NDT CY - Moscow, Russia DA - 2010-06-07 PY - 2010 AN - OPUS4-22786 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Spatial clustering of LIBS data from concrete samples T2 - 6th International Conference on Laser-Induced Breakdown Spectroscopy CY - Memphis, TN, USA DA - 2010-09-13 PY - 2010 AN - OPUS4-22789 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Urban, Klaus T1 - Childproof oil lamps are possible! New design burners can effectively protect children from poisoning N2 - Backgrouund:For more than 10 years the Federal Institute for Risk Assessment (BfR) and its predecessor institutes have been striving to reduce the risk of poisoning from lamp oil by raising awareness of the hazards. In most of these accidents children drank directly from the unsafe oil lamps, which are mostly in the reach of the children. Therefore, a European standard was published in 2003 (DIN EN 14059: Decorative oil lamps – Safety requirements and test methods) on the initiative of BfR, which stipulates safety requirements and test methods for safe oil lamps for ornamental purposes. However, manufacturers and distributors have so far failed to develop childproof oil lamps for use in homes and gardens or place such lamps on the European market. To protect the children, proposals have been made for an easy construction of child-safe burners. Method: Out of concern for children's health the BAM Federal Institute for Materials Research and Testing (BAM), with the support of BfR, has come up with a design study for a childproof burner for lamp oils. This is a very simple and low-cost design that can be constructed without any major technical outlay. Existing lamps can be retrofitted. The burners are designed in such a way that children can no longer open and drink from the oil lamps. It is also much more difficult for them to access the wick. The BAM, the responsible public agency, makes this design available to manufacturers and distributors free of charge on the Internet. Manufacturers can then incorporate it into their own marketable products thereby considerably increasing the safety of their products in line with the Product Safety Act. Results: The BAM and BfR activities should be seen more particularly against the backdrop that the actual share of less dangerous substitutes for lamp oils containing biodiesel, mineral oil or coconut oil is quite small, but will increase in the future with a new legislation. Conclusion: The still existing gap between dangerous paraffin lamp oils and their safe substitutes can be tightened by constructive measures. The suggested "public open" low-cost design for ornamental lamps can effectively protect children from poisoning. T2 - North American Congress of Clinical Toxicology CY - Denver, CO, USA DA - 2010-10-07 PY - 2010 AN - OPUS4-22790 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raedel, Martina T1 - Historische und moderne Goldmosaike im Vergleich T2 - Poster für die Archäometrie-Tagung CY - Bochum, Germany DA - 2010-09-15 PY - 2010 AN - OPUS4-22793 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noske, Reinhard T1 - TNT-Chemosensor-Gerät T2 - Sensor2006 CY - Nuremberg, Germany DA - 2006-03-14 PY - 2006 AN - OPUS4-22794 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noske, Reinhard T1 - TNT-Chemosensor-Gerät, Modul 1 T2 - Sensor2008 CY - Nuremberg, Germany DA - 2008-03-14 PY - 2008 AN - OPUS4-22796 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Quantification of Tributyltin (TBT) at Sub-ppt Level in Whole Water Samples T2 - Canas 2011 CY - Leipzig, Germany DA - 2011-03-13 PY - 2011 AN - OPUS4-23249 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fettig, Ina T1 - Chemische Brandspurenanalytik - Nachweis von Benzin in Brandrückständen T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23250 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Chemische Brandspurenanalytik - Methoden zum Nachweis von Brandbeschleunigern in Brandrückständen T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23251 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Aichner, Bernhard T1 - Monitoring organic pollutants (PAHs, PCBs, OCPs) in German forest soils T2 - IMOG (International Meeting on Organic Geochemistry) CY - Interlaken, Switzerland DA - 2011-09-18 PY - 2011 AN - OPUS4-23278 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Single Fiber Pull-out Test T2 - 4th International CFK-Valley Stade Convention CY - Stade, Germany DA - 2010-06-15 PY - 2010 AN - OPUS4-23289 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Denkler, Tilman T1 - Project management using an internet-platform based on MS SharePoint N2 - - Project description - Challenges related to project coordination and information exchange - Presentation of web-platform as solution T2 - EuropeAid-Project "Strengthing of the BiH accreditation system" 5th Steering Committee Meeting CY - Sarajevo, Bosnia and Herzegovina DA - 2011-02-03 PY - 2011 AN - OPUS4-23290 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maiwald, Michael T1 - Prozesskontrolle mittels MR-NMR: Erste Ergebnisse T2 - Doktorandentagung Attendorn CY - Attendorn, Germany DA - 2011-02-27 PY - 2011 AN - OPUS4-23293 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Haftfestigkeitsprüfung mittels Zentrifugenversuch T2 - DGO AnSim Verwertungsworkshop CY - Berlin, Germany DA - 2011-03-23 PY - 2011 AN - OPUS4-23299 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Verification and Authentication of Surface- and Layer-embedded Information for Anticouterfeiting Applications by Imaging Ellipsometry T2 - 6th Workshop Ellipsometry CY - Berlin, Germany DA - 2011-02-21 PY - 2011 AN - OPUS4-23300 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Moreno-Gordaliza, E. T1 - LA-ICP-MS for the detection on Pt-binding proteins in biological samples after PAGE/2-DE separations T2 - European Winter Conference on Plasma Spectrochemistry CY - Zaragoza, Spain DA - 2011-01-30 PY - 2011 AN - OPUS4-23227 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - CarbonNanotubes: Synthesis, Functionalization, Dispersion T2 - International Nanotechnology Exhibition and Conference Nano Tech 2011 CY - Tokyo, Japan DA - 2011-02-16 PY - 2011 AN - OPUS4-23233 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ramanujam, Maalolan T1 - Argon Plasma Treatment of Polymers - Trapping of Radicals by Nitric Oxidegassing T2 - Plasma Surface Engineering 2010 CY - Garmisch-Partenkirchen, Germany DA - 2010-09-13 PY - 2010 AN - OPUS4-23244 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dalitz, F. T1 - Prozesskontrolle mittels MR-NMR: Erste Ergebnisse T2 - Anakon 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23400 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mahlkow, S. T1 - Micro-X-Ray Absorption Near Edge Spectroscopy (Xanes) at attic sherds ans their replicas T2 - 2nd Joint BER II and BESSY II Users`Meeting CY - Berlin, Germany DA - 2010-12-09 PY - 2010 AN - OPUS4-23424 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Investigations on particles and smoke gas composition during smouldering of spruce wood T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23407 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Plagge, Michael T1 - STA-FTIR Untersuchungen als Eingabeparameter für die numerische Simulation von Brandversuchen T2 - 19. Ulm-Freiberger Kalorimetertage CY - Freiberg, Germany DA - 2011-03-16 PY - 2011 AN - OPUS4-23408 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Werrel, Martin T1 - Cone Calorimeter-Daten als Eingabeparameter für die numerische Simulation von Brandvorgängen T2 - 19. Ulm-Freiberger Kalorimetertage CY - Freiberg, Germany DA - 2011-03-16 PY - 2011 AN - OPUS4-23409 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Die Rolle des Staatlichen Materialprüfungsamtes Berlin-Dahlem bei der Typisierung der Pressmassen und der Gütesicherung T2 - 6th International Thermoset Conference CY - Iserlohn, Germany DA - 2011-03-23 PY - 2011 AN - OPUS4-23412 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bohmeyer, W. T1 - Prozesskontrolle mit Ultraschall US-plus T2 - 6th International Thermoset Conference CY - Iserlohn, Germany DA - 2011-03-23 PY - 2011 AN - OPUS4-23413 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merk, Virginia T1 - Development and Characterization of New SERS Substrates for Bioanalytical Application T2 - Berliner Chemisches Symposium CY - Berlin, Germany DA - 2011-04-07 PY - 2011 N1 - Geburtsname von Merk, Virginia: Joseph, V. - Birth name of Merk, Virginia: Joseph, V. AN - OPUS4-23455 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lucassen, F. T1 - The rutile-titanite reaction: Material transport along mineral interfaces and dissolution patterns on rutile T2 - European Geoscience Union General Assembly 2011 CY - Vienna, Austria DA - 2011-04-03 PY - 2011 AN - OPUS4-23449 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drescher, Daniela T1 - Biological mulitplex applications of optical nanoprobes in live cells T2 - International Symposium "Molecular Plasmonics" CY - Jena, Germany DA - 2011-05-19 PY - 2011 AN - OPUS4-23452 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merk, Virginia T1 - Development and Characterization of New SERS Substrates for Biological Application T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 N1 - Geburtsname von Merk, Virginia: Joseph, V. - Birth name of Merk, Virginia: Joseph, V. AN - OPUS4-23454 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dalitz, F. T1 - On-line NMR Spectroscopy of Technical Samples - Considerations of the Sample Residence Time T2 - 2nd European Conference on Process Analytics and Control Technology CY - Glasgow, Scotland DA - 2011-04-27 PY - 2011 AN - OPUS4-23665 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Combustion of peroxy-fuels T2 - ERCOFTAC Conference: Highly Resolved Experimental and Numerical Diagnostics for Turbulent Combustion (HRTC-1) CY - Rouen, France DA - 2011-05-25 PY - 2011 AN - OPUS4-23734 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Geier, M. T1 - Impact of laser treatment on phosphoric acid coated multicrystalline silicon PV wafers T2 - 26th European Photovoltaic Solar Energy Conference CY - Hamburg, Germany DA - 2011-09-05 PY - 2011 AN - OPUS4-23750 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malitte, Hans-Joachim T1 - Strahlenschtuz beim ortsveränderlichen Umgang mit Betatrons bis 7,5 MeV T2 - DGZfP-Jahrestagung CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-23751 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malitte, Hans-Joachim T1 - Strahlenschutzausbildung für die ZfP T2 - DGZfP-Jahrestagung CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-23752 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sölter, B. T1 - ALARA in der ZfP T2 - DGZfP-Jahrestagung CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-23753 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schindhelm, S. T1 - Optimierung von Verfahren zur Injektion und Separation der Partikel-Prozessgas-Ströme bei der Plasmamodifizierung von CNT T2 - 5. Symposium Produktgestaltung in der Partikeltechnologie CY - Pfinztal, Germany DA - 2011-05-19 PY - 2011 AN - OPUS4-23686 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eslahian, Kyriakos-Alexandros T1 - Effect of Electrolyte Species and Concentration on the Soret Coefficient of Aqueous Dispersions observed by Thermal Field-Flow Fractionation T2 - 19th European Conference on Information Systems (ECIS) 2011 CY - Berlin, Germany DA - 2011-09-04 PY - 2011 AN - OPUS4-23702 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Röhrich, J. T1 - A Tandetron as proton injector for the eye tumor therapy in Berlin T2 - 14th Int. Conf. on Ion Sources (ICIS11) CY - Giardini Naxos, Italy DA - 2011-09-12 PY - 2011 AN - OPUS4-23736 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Füllbrandt, Marieke T1 - Dielectric and Thermal Investigation of Poly(vinyl acetate) adsorbed on Silica particles T2 - Deutsche Physikalische Gesellschaft (DPG) Spring Meeting 2011 CY - Dresden, Germany DA - 2011-03-13 PY - 2011 AN - OPUS4-23744 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Stability of poly(phenyl-1,4-phenylene vinylene) investigated by thermo- and chemilumineszenz T2 - Excited States, Photochemistry, and Application CY - Noordwijk, Netherlands DA - 1998-06-16 PY - 1998 AN - OPUS4-23144 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schartel, Bernhard T1 - Thermooxidative stability of poly(phenyl-1,4-phenylene vinylene) monitored with chemilumineszenz T2 - 200th Wilhelm and Else Heraeus Seminar CY - Wiesbaden, Germany DA - 1998-06-24 PY - 1998 AN - OPUS4-23145 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Chemilumineszenzuntersuchungen zur Stabilität von elektrooptischen Funktionspolymeren T2 - Präsentationsveranstaltung des Berliner Verbandes für Polymerforschung CY - Berlin, Germany DA - 1999-05-20 PY - 1999 AN - OPUS4-23147 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Damerau, T. T1 - Molar mass dependence of excimer fluorescence in poly(vinyl carbazole) - 1D-random-walk-model versus a simple statistical model T2 - Austrian-Israeli-German Symposium on Dynamical Processes in Condensed Molecular Systems CY - Baden, Austria DA - 1995-05-07 PY - 1995 AN - OPUS4-23137 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, S. T1 - Lumineszenzuntersuchungen zur Stabilität von Funktionspolymeren T2 - Frühjahrstagung der Deutschen Physikalischen Gesellschaft (DPG) CY - Münster, Germany DA - 1997-03-17 PY - 1997 AN - OPUS4-23141 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Chemilumineszenzuntersuchungen zur Stabilität von elektrooptischen Funktionspolymeren T2 - GDCh Fachgruppe Makromolekulare Chemie CY - Mainz, Germany DA - 1998-03-23 PY - 1998 AN - OPUS4-23143 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Intramolecular excimers in vinylarylpolymers - Influence of molecular weight and tacticity T2 - ACS Fall National Meeting CY - Washington, D.C., USA DA - 1994-08-21 PY - 1994 AN - OPUS4-23132 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - A photoselective effect in the photooxidation of PET and PC T2 - 34th IUPAC International Symposium on Macromolecules CY - Prague, Czech Republic DA - 1992-06-12 PY - 1992 AN - OPUS4-23115 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kruse, A. T1 - Thin conductive coatings made by plasmapolymerization of 2-iodothiophene T2 - 3rd International Conference on Plasma Surface Engineering CY - Garmisch-Partenkirchen, Germany DA - 1992-10-25 PY - 1992 AN - OPUS4-23116 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennecke, Manfred T1 - Excitation energy transfer and fluorescence depolarization in poly(p-phenylene vinylene) T2 - Polymer for Advanced Technologies CY - Oxford, England DA - 1993-09-08 PY - 1993 AN - OPUS4-23123 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ballhause, Tony T1 - MIIC-Monitoring und Imaging auf Grundlage interferometrischer Konzepte T2 - Tagung der Deutschen Geophysikalischen Gesellschaft 2011 CY - Cologne, Germany DA - 2011-02-21 PY - 2011 AN - OPUS4-23327 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pelkner, Matthias T1 - Flux Leakage Measurements for Defect Characterization Using a High Precision 3-Axial GMR Magnetic Sensor T2 - The 15th International Workshop on Electromagnetic Nondestructive Evaluation (ENDE) CY - Szczecin, Poland DA - 2010-06-13 PY - 2010 AN - OPUS4-23365 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lischka, Susanne T1 - 13C-markierte Kalibrierstandards für die Arsenspeziesanalytik mittels LC-ESI-MS/MS T2 - CANAS CY - Leipzig, Germany DA - 2011-03-13 PY - 2011 AN - OPUS4-23368 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuhlich, Paul T1 - Neue Desinfektionsnebenprodukte ausgewählter Personal Care Products T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23372 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Th. T1 - Untersuchung hetrogen katalysierter Selektivoxiationen im Explosionsbereich unter verwendung von Mikrostrukturreaktoren -Reaktionstechnische Untersuchungen- T2 - Jahrestreffen deutscher katalytiker mit Jahrestreffen Reaktionstechnik, 16. - 18. März 2011, Weimar CY - Weimar, Germany DA - 2011-03-16 PY - 2011 AN - OPUS4-23394 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Anka T1 - Untersuchungen zur thermischen Stabilität von Nitrocellulosefilmen T2 - 19. Ulm-Freiberger Kalorimetrietage CY - Freiberg, Germany DA - 2011-03-16 PY - 2011 AN - OPUS4-23359 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Damerau, Thomas T1 - Molar mass dependence of excimer fluorescence in poly(vinyl carbazole) - 1D-random-walk-model versus a simple statistical model T2 - Präsentationsveranstaltung des Berliner Verbandes für Polymerforschung CY - Berlin, Germany DA - 1995-05-18 PY - 1995 AN - OPUS4-23360 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - Blistering and layer modification of hydrogenated amorphous carbon layers induced by femtosecond laser pulse irration T2 - Bunsentagung 2011 CY - Berlin, Germany DA - 2011-06-02 PY - 2011 AN - OPUS4-23361 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yin, Huajie T1 - Glass Transition of Thin Poly(bisphenol A carbonate) Films Studied by Dielectric Spectroscopy T2 - DPG-Spring-Meeting 2011 CY - Dresden, Germany DA - 2011-03-13 PY - 2011 AN - OPUS4-23363 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Femtosecond laser-induced periodic surface structures on semiconductors and dielectrics T2 - EMRS Spring Meeting 2011, Symposium J "Laser materials processing for micro and nano applications" CY - Nice, France DA - 2011-05-09 PY - 2011 AN - OPUS4-23380 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yin, Huajie T1 - Calorimetric Glass Transition of Thin Poly(bisphenol A carbonate) Films T2 - DPG-Spring-Meeting 2011 CY - Dresden, Germany DA - 2011-03-13 PY - 2011 AN - OPUS4-23345 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Purohit, Purv T1 - Structure-Property relationships of nanocomposites based on Polyethylene and Layered Double Hydroxide T2 - Deutsche Pysikalische Gesellschaft (DPG) Spring Meeting 2011 CY - Dresden, Germany DA - 2011-03-13 PY - 2011 AN - OPUS4-23347 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Christina T1 - Investigation of discotic liquid crystals T2 - DPG-Spring-Meeting 2011 CY - Dresden, Germany DA - 2011-03-13 PY - 2011 AN - OPUS4-23348 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mohamed, Alaa T1 - Structure-Property Relationships of Thin Plasma Deposited Poly(acrylic acid) Films T2 - DPG-Spring-Meeting 2011 CY - Dresden, Germany DA - 2011-03-13 PY - 2011 AN - OPUS4-23349 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weißhaupt, Petra T1 - Nitrogen metabolism of wood decomposing basidiomycetes and their interaction with diazotrophs as revealed by IRMS T2 - Ecology of Soil Microorganisms - Koferenz der tschechischen Akademie der Wissenschaften CY - Prague, Czech Republic DA - 2011-04-27 PY - 2011 AN - OPUS4-23339 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Carbohydrate-functionalized surfaces: Analysis by an multi-method approach T2 - 5th Glycan Forum CY - Berlin, Germany DA - 2011-03-10 PY - 2011 AN - OPUS4-23344 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gebhard, St. T1 - Maintenance and repair of railway wheels T2 - MRO-Konferenz (Fraunhofer Innovationscluster) CY - Berlin, Germany DA - 2011-03-25 PY - 2011 AN - OPUS4-23522 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - Characterization of a rotaxane toplayer stack formed by self-assembly and layer-by-layer deposition exploiting coordination chemistry T2 - Berliner Chemie Symposium 2011 CY - Berlin, Germany DA - 2011-04-07 PY - 2011 AN - OPUS4-23547 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gebert, Antje T1 - Analyse der Aminosäurenzusammensetzung in Bindemitteln zentralasiatischer Wandmalereien mittels GC-MS T2 - Berliner Chemie Symposium (Jungchemikerforum) der Humboldt-Universität Berlin CY - Berlin, Germany DA - 2011-04-07 PY - 2011 AN - OPUS4-23502 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mönch, Bettina T1 - Analytik von Ethylglucuronid in Haaren - Untersuchungen zum Clean-up wässriger Extrakte T2 - Berliner Chemie Symposium (Jungchemikerforum) der Humboldt-Universität Berlin CY - Berlin, Germany DA - 2011-04-07 PY - 2011 AN - OPUS4-23503 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lischka, Susanne T1 - 13C-markierte Kalibrierstandards für die Arsenspeziesanalytik mittels LC-ESI-MS/MS T2 - Berliner Chemie Symposium (Jungchemikerforum) der Humboldt-Universität Berlin CY - Berlin, Germany DA - 2011-04-07 PY - 2011 AN - OPUS4-23504 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Durmaz, V. T1 - Multi-Mode Molecular Dynamics Simulation of the Chromatographic Elution Order of Hexabromocyclododecane Stereoisomers T2 - 25th Molecular Modelling Workshop 2011, Friedrich-Alexander-Universität Nürnberg-Erlangen CY - Nuremberg-Erlangen, Germany DA - 2011-04-04 PY - 2011 AN - OPUS4-23511 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Anwendung der Ultraschallspektrometrie zur Optimierung von keramischen Schlickern T2 - DKG-Jahrestagung 2011 CY - Saarbrücken, Germany DA - 2011-03-28 PY - 2011 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-234897 AN - OPUS4-23489 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Güther, Wolfgang T1 - Schadensuntersuchungen an Aluminiumoxid-Stahl-Lötverbunden auf Basis des Mo/Mn-Verfahrens T2 - DKG-Jahrestagung 2011 CY - Saarbrücken, Germany DA - 2011-03-28 PY - 2011 AN - OPUS4-23491 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Bärbel T1 - Hochpräzise Strukturierung von LTCC-Multilayern mittels Mikrofräsen T2 - DKG-Jahrestagung 2011 CY - Saarbrücken, Germany DA - 2011-03-28 PY - 2011 AN - OPUS4-23492 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lischka, Susanne T1 - Application of a 13C-lableled calibration standard for the analysis of arsenobetaine in fish using HPLC-ESI-MS/MS T2 - TraceSpec CY - Pau, France DA - 2011-05-18 PY - 2011 AN - OPUS4-23563 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, M. T1 - Investigation of Material Removal during Laser-Scribing of Silicon and CIGSe based Thin-Film Solar Cells T2 - 2nd Workshop on CIGS Solar Cells Technology CY - Berlin, Germany DA - 2011-04-19 PY - 2011 AN - OPUS4-23630 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schultz, C. T1 - Single Wavelength Laser Processing for Monolithically Connected Si and CIGS Thin Film Solar Cells T2 - 26th European Photovoltaic Solar Energy Conference CY - Hamburg, Germany DA - 2011-09-05 PY - 2011 AN - OPUS4-23617 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schultz, C. T1 - Laser-Ablation Behavior of Thin-Film Materials used in Silicon and GIGSe based Solar Cells T2 - 26th European Photovoltaic Solar Energy Conference CY - Hamburg, Germany DA - 2011-09-05 PY - 2011 AN - OPUS4-23618 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Janzen, R. T1 - A New Microwave Induced Plasma Source for Speciation Analysis of Heavy Metals T2 - Plasma Winter Conference CY - Zaragoza, Spain DA - 2011-01-30 PY - 2011 AN - OPUS4-23644 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Korzen, Manfred T1 - Constitutive Equations for Structural Steel Subjected to Fire - Some Remarks T2 - International Conference APPLICATIONS OF STRUCTURAL FIRE ENGINEERING 2011 CY - Prague, Czech Republic DA - 2011-04-29 PY - 2011 AN - OPUS4-23653 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rücker, Werner T1 - Results and Experiences from the Research Project IMO-WIND T2 - DEWEK 2010, 10th German Wind Energy Conference CY - Bremen, Germany DA - 2010-11-17 PY - 2010 AN - OPUS4-23580 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Damm, David T1 - Datenfluss-Szenario im Projekt SIGRID Untertitel: Sicherung von Gefahrguttransporten durch RFID-Tags mit Sensorfunktionalität und integrierter Datenbank-GEFAHRGUT-Information T2 - Messe SENSOR+TEST 2011 (Die Messtechnik-Messe) CY - Nuremberg, Germany DA - 2011-06-07 PY - 2011 AN - OPUS4-23583 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sarfraz, Adnan T1 - In situ Study of the Crystallization of Metal Phosphonates T2 - SPP 1415 Winterschool CY - Eisenach, Germany DA - 2011-03-30 PY - 2011 AN - OPUS4-23610 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gründer, Klaus-Peter T1 - Dreidimensionale Verformungsanalyse duch optische Messverfahren T2 - Ausstellung "Berlin im Licht" CY - Berlin, Germany DA - 2008-06-24 PY - 2008 AN - OPUS4-17088 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jakobs, Désirée T1 - Microbial succession in response to biocide on wood in soil contact T2 - VAAM-/GBM-Jahrestagung 2008 (Vereinigung für Allgemeine und Angewandte Mikrobiologie) CY - Frankfurt am Main, Germany DA - 2008-03-09 PY - 2008 AN - OPUS4-17153 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Asztemborska, Monika T1 - Determination of tributyltin at sub-ng/l level in water samples - development of a method as a response to environmental quality standards for priority substances in surface waters established by European Union T2 - 4th International Conference on Trace Element Speciation in Biomedical, Nutritional and Environmental Sciences CY - Munich, Germany DA - 2008-05-25 PY - 2008 AN - OPUS4-17491 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mann, Guido T1 - Bestimmung des Wärmeübergangskoeffizienten von Kieselglas in Luft unterhalb Tg mit Unterstützung von FEM T2 - 82. Glastechnische Tagung CY - Hamelin, Germany DA - 2008-05-19 PY - 2008 AN - OPUS4-17513 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Probst, Ulrich T1 - Investigation of seal effects according to axial compression variation of coil spring metal seals T2 - Symposium; Packaging and Transportation of Radioactive Materials (PATRAM) CY - Miami, FL, USA DA - 2007-10-21 PY - 2007 AN - OPUS4-17518 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gradt, Thomas T1 - Test rig for static and dynamic friction tests at cryogenic temperatures T2 - Symposium on Vacuum based Science and Technology CY - Greifswald, Germany DA - 2007-09-05 PY - 2007 AN - OPUS4-17481 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartusch, Jürgen T1 - Sicherheit in der Komposit-Produktion/Produktionskontrolle mit Ultraschall T2 - Aerospace 2008 CY - Munich, Germany DA - 2008-04-15 PY - 2008 AN - OPUS4-17440 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Joachim T1 - Luft-Ultraschall-Sensoren zum Nachweis nichtmetallischer Gegenstände in Textilien T2 - Sensor und Test CY - Nuremberg, Germany DA - 2008-05-06 PY - 2008 AN - OPUS4-17441 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Joachim T1 - Durchschallung von Textilien zum Nachweis verdeckter nichtmetallischer Gegenstände T2 - DACH-Jahrestagung 2008 CY - St. Gallen, Switzerland DA - 2008-04-28 PY - 2008 AN - OPUS4-17442 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartusch, Jürgen T1 - Online certification of composites T2 - Aerospace 2008 CY - Munich, Germany DA - 2008-04-15 PY - 2008 AN - OPUS4-17443 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dey, Anika T1 - Optimierte Schieneninstandhaltung durch Wirbelstromprüfung T2 - DGZfP-DACH-Tagung 2008 CY - St. Gallen, Switzerland DA - 2008-04-28 PY - 2008 AN - OPUS4-17444 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grytsenko, K. P. T1 - Structure and properties of PTFE films deposited in vacuum from pretreated substances T2 - Frühjahrstagung der Europäischen Gesellschaft für Materialforschung (EMRS) CY - Strasbourg, France DA - 2008-05-26 PY - 2008 AN - OPUS4-17526 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Sebastian T1 - Normen für die chemische Analytik T2 - Mittelstandskonferenz "Erfolgsfaktor Normung" CY - Berlin, Germany DA - 2008-04-07 PY - 2008 AN - OPUS4-17528 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Testing of tensile and adhesive strength by centrifuge technology T2 - PSE 2008 CY - Garmisch-Partenkirchen, Germany DA - 2008-09-15 PY - 2008 AN - OPUS4-17806 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Karrasch, Andrea A1 - Jäger, Christian T1 - Thermal decomposition of PDMS in flame-retarded bisphenol-A polycarbonate: A solid-state NMR investigation T2 - GDCh-Tagung Magnetische Resonanz 2008 CY - Regensburg, Germany DA - 2008-09-22 PY - 2008 AN - OPUS4-17831 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Emmerling, Franziska T1 - Monitoring von Katalysatorsynthesen mittels simultaner WAXS/SAXS/Raman- und ATR/UV-vis/Raman-Spektroskopie T2 - ProcessNet-Jahrestagung 2008 CY - Karlsruhe, Germany DA - 2008-10-07 PY - 2008 AN - OPUS4-17835 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wirker, Ringo T1 - Suberic acid synthesis via ozonolysis and subsequent oxidation - Comparison of conventional semi batch and continous reaction mode using micro reaction technology T2 - 1st SynTOP Smart Synthesis and Technologies for Organic Processes CY - Potsdam, Germany DA - 2008-06-11 PY - 2008 AN - OPUS4-17836 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Glass transition of ultrathin supported polysulfone films studied by dielectric spectroscopy T2 - 5th International Conference on Broadband Dielectric Spectroscopy and its Applications CY - Lyon, France DA - 2008-08-26 PY - 2008 AN - OPUS4-17823 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bras, A. T1 - Dielectric relaxation processes in liquid, supercooled and glassy states of a pharmaceutical drug: Ibuprofen T2 - 5th International Conference on Broadband Dielectric Spectroscopy and its Applications CY - Lyon, France DA - 2008-08-26 PY - 2008 AN - OPUS4-17827 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bras, A. T1 - Dynamics of a nematic mixture confined to molecular sieves as studied by broadband dielectric spectroscopy T2 - 5th International Conference on Broadband Dielectric Spectroscopy and its Applications CY - Lyon, France DA - 2008-08-26 PY - 2008 AN - OPUS4-17828 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lingertat, J. T1 - Tribological performance of MoS2 coatings in liquid helium and at high loads T2 - 25th Symposium on Fusion Technology CY - Rostock, Germany DA - 2008-09-15 PY - 2008 AN - OPUS4-18192 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Analysis of toxic smoke gases using FTIR spectroscopy T2 - 9th IAFSS Symposium CY - Karlsruhe, Germany DA - 2008-09-21 PY - 2008 AN - OPUS4-18180 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Examples for Innovation Requirement in Road Construction T2 - Transport Research Arena Conference CY - Ljubljana, Slovenia DA - 2008-04-21 PY - 2008 AN - OPUS4-18240 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dey, Anika T1 - The important role of eddy current testing in railway track maintenance T2 - WCNDT Tagung 2008 CY - Shanghai, China DA - 2008-10-25 PY - 2008 AN - OPUS4-18170 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kreutzbruck, Marc T1 - Cellular polypropylene ferroelectret film: Piezoelectric material for non-contact Ultrasonic transducers T2 - WCNDT 2008 CY - Shanghai, China DA - 2008-10-25 PY - 2008 AN - OPUS4-18171 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steiger, Thomas T1 - Improvement of COMAR- the international database for certified reference materials T2 - Anakon CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-18084 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Pool flames of organic peroxides: experiments and CFD simulations T2 - 9. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 2008-11-06 PY - 2008 AN - OPUS4-18292 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grimm, T. T1 - Usage of a screening system with direct online GC-measurements for the development of chiral biocatalytical processes T2 - European Bioperspectives CY - Hanover, Germany DA - 2008-11-07 PY - 2008 AN - OPUS4-18287 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Massah, Sima A1 - Müller, Urs T1 - Korrosionsschäden an bewehrten Kunststeinfiguren T2 - Denkmal 2008 - Messe zur Denkmalpflege CY - Leipzig, Germany DA - 2008-11-18 PY - 2008 AN - OPUS4-18251 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs T1 - Beton im mikroskopischen Bild T2 - Denkmal 2008 - Messe zur Denkmalpflege CY - Leipzig, Germany DA - 2008-11-20 PY - 2008 AN - OPUS4-18252 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs T1 - Betonchemie - Was geschieht bei der Hydratation und Carbonatisierung? T2 - Denkmal an Beton, Denkmal 2008 - Messe zur Denkmalpflege CY - Leipzig, Germany DA - 2008-11-20 PY - 2008 AN - OPUS4-18254 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schoßig, Jörg T1 - Validierung formalkinetischer Größen aus der adiabaten Warmlagerung T2 - 9. Fachtagung Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen, Germany DA - 2008-11-06 PY - 2008 AN - OPUS4-18333 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raedel, Martina T1 - Modifizierte Glasklebstoffe für die Restaurierung von Glasmalereien T2 - Europäische Messe für Denkmalpflege, Restaurierung und Altbausanierung CY - Leipzig, Germany DA - 2008-11-20 PY - 2008 AN - OPUS4-18384 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Determination and Quantification of LAS-isomers using GC-MS and GC-FID T2 - EMEC 9 CY - Girona, Spain DA - 2008-12-03 PY - 2008 AN - OPUS4-18394 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ritter, Martin T1 - Accuracy estimation of SPM 3D-Calibration by Error separation T2 - Nanoscale 2008 CY - Turin, Italy DA - 2008-09-22 PY - 2008 AN - OPUS4-18446 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs T1 - Hydraulische Bindemittel im Überblick T2 - Denkmal an Beton, Denkmal 2008 - Messe zur Denkmalpflege CY - Leipzig, Germany DA - 2008-11-20 PY - 2008 AN - OPUS4-18493 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bürgisser, Philip T1 - Influence of mineral additions on the mechanisms and reaction of the silca reaction (ASR) in concrete T2 - Nanocem Fall Colloquium 2008 CY - Dijon, France DA - 2008-11-04 PY - 2008 AN - OPUS4-18466 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Ultraschallmesstechnik zur Wareneingangskontrolle und zur Überwachung T2 - 5th Int. Thermoset Conference CY - Iserlohn, Germany DA - 2008-11-20 PY - 2008 AN - OPUS4-18468 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kohlhoff, Harald T1 - Referenzmesseinrichtung für die instrumentierte Eindringprüfung im Makrobereich T2 - SENSOR + TEST 2008 CY - Nuremberg, Germany DA - 2008-05-06 PY - 2008 AN - OPUS4-18451 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Optical Mapping and Imaging for Quality Control of Thin Films and Surfaces T2 - ICCG 8, The 8th International Conference on Coatings on Glass and Plastics - Advanced Coatings for Large-Area or High-Volume Products CY - Braunschweig, Germany DA - 2009-06-13 PY - 2009 AN - OPUS4-19247 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zencker, Uwe T1 - Entwicklung von Beurteilungsmethoden für Transport- und Lagerbehälter mit erhöhten metallischen Reststoffanteilen (EBER III) T2 - 9. Intern. Symp. "Konditionierung radioaktiver Betriebs- und Stilllegungsabfälle" - KONTEC CY - Dresden, Germany DA - 2009-04-15 PY - 2009 AN - OPUS4-19251 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prager, Jens T1 - Fehlernachweis mit geführten Wellen unter Verwendung der Gruppenstrahlertechnik T2 - DGZfP-Jahrestagung CY - Münster, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-19260 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael T1 - Informationssystem der Datenbank GEFAHRGUT - Datenbank GEFAHRGUT jetzt in JAVA T2 - Messe "transport logistic 2009" CY - Munich, Germany DA - 2009-05-13 PY - 2009 AN - OPUS4-19262 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Elastomere Referenzmaterialien und ausgewählte Prüfverfahren T2 - DVM-Tag 2009 Elastomere CY - Berlin, Germany DA - 2009-04-22 PY - 2009 AN - OPUS4-19291 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matschulat, Andrea T1 - NiR-SERS probes for in vitro and in vivo bioanalytics T2 - Tag der Chemie CY - Potsdam, Germany DA - 2009-06-04 PY - 2009 AN - OPUS4-19301 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Suhendra, Suhendra T1 - Coal Fire Fighting: Removal of Thermal Energy by Heat Pipes T2 - European Geosciences Union Gerneral Assembly 2009 CY - Vienna, Austria DA - 2009-04-19 PY - 2009 AN - OPUS4-19303 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Radiative characteristics of large pool fires of organic peroxides T2 - 4th European Combustion Meeting CY - Vienna, Austria DA - 2009-04-14 PY - 2009 AN - OPUS4-19306 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kneipp, Janina T1 - surface-enthanced Raman scattering probes for intracellular sensing and imaging T2 - Konferenz Molekulare Bildgebung CY - Berlin, Germany DA - 2009-06-18 PY - 2009 AN - OPUS4-19313 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred T1 - Analytische Untersuchungen zur Bestimmung der Provenienz von Goldmosaiken im Aachener Dom T2 - Jahrestagung Archäometrie und Denkmalpflege 2009 CY - Munich, Germany DA - 2009-03-25 PY - 2009 AN - OPUS4-19330 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maiwald, Michael T1 - Quantitative Online-NMR-Spektroskopie für die Prozessanalytik T2 - Tag der Chemie CY - Potsdam, Germany DA - 2009-06-04 PY - 2009 AN - OPUS4-19280 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael T1 - Messebanner transport losgistic - Datenbank GEFAHRGUT T2 - Messe "transport logistic 2009" CY - Munich, Germany DA - 2009-05-13 PY - 2009 AN - OPUS4-19347 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Joachim T1 - Spektroskopische Untersuchungen an Polypropylen-Schaumfolie mit Luftultraschall T2 - DGZfP-Jahrestagung 2009 CY - Münster, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-19404 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ploigt, Roy T1 - Hohe Prüfgeschwindigkeit bei einem Gruppenstrahlerprüfsystem - Eine Herausforderung für den Entwickler T2 - DGZfP-Jahrestagung 2009 CY - Münster, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-19409 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dohse, Elmar T1 - Vom "Logikgrab" zur Einchiplösung: Der Einsatz von FPGAs in digitalen Ultraschallgeräten T2 - DGZfP-Jahrestagung 2009 CY - Münster, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-19410 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf T1 - Influence of deposition parameters on tribological properties of CNx coatings T2 - WOM, 17th International Conference on Wear of Materials CY - Las Vegas, NV, USA DA - 2009-04-19 PY - 2009 AN - OPUS4-19364 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klimakow, Maria T1 - Mechanochemische Synthese von metallorganischen Gerüstverbindungen T2 - Jahrestagung der Deutschen Gesellschaft für Kristallographie 2009 CY - Hanover, Germany DA - 2009-03-09 PY - 2009 AN - OPUS4-19368 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fähnemann, S. T1 - Konfigurationsisomerie Imidazol-haltiger Bispidin-Derivate T2 - GDCh-Wissenschaftsforum CY - Frankfurt am Main, Germany DA - 2009-08-30 PY - 2009 AN - OPUS4-19369 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Barheine, Sabrina A1 - Jäger, Christian T1 - Surface, interface and bulk structure of borate containing apatitic biomaterials T2 - The Alpine Conference on Solid-State NMR CY - Chamonix, France DA - 2009-09-13 PY - 2009 AN - OPUS4-19370 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Turbulent Combustion in Pool Fires of Organic Peroxides T2 - von Karman Institute for Fluid Dynamics, Lecture Series on "Turbulent Combustion" CY - Sint-Genesius-Rode, Belgium DA - 2009-05-25 PY - 2009 AN - OPUS4-19505 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Technical Standard for Multigassensors T2 - International Symposium on Olfraction and Electronic Nose, Isoen 2009 CY - Brescia, Italy DA - 2009-04-15 PY - 2009 AN - OPUS4-19445 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - Adhesion Polypropylene - Aluminium by Aerosol Based DBD Treatment of Foils T2 - Third Asian Conf. on Adhesion CY - Hamamatsu, Japan DA - 2009-06-07 PY - 2009 AN - OPUS4-19439 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Joachim T1 - Nachweis verdeckter, nichtmetallischer Objekte in Textilien T2 - Sensor + Test CY - Nuremberg, Germany DA - 2009-05-26 PY - 2009 AN - OPUS4-19453 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Joachim T1 - Eigenschaften von Textilien mit Ultraschall gemessen T2 - Sensor + Test CY - Nuremberg, Germany DA - 2009-05-26 PY - 2009 AN - OPUS4-19454 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Franz-Georg T1 - Materialeffizienz in der Praxis T2 - Kick-off-Veranstaltung des BMBF-Förderschwerpunkts "r2 - Innovative Technologien für Ressourceneffizienz - Rohstoffintensive Produktionsprozesse" CY - Bonn, Germany DA - 2009-06-23 PY - 2009 AN - OPUS4-19473 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Numerical prediction of safety distances from large pool fires of organic peroxides T2 - 40th Annual Conference of ICT, Energetic Materials - Characterisation, Modelling and Validation CY - Karlsruhe, Germany DA - 2009-06-23 PY - 2009 AN - OPUS4-19578 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - von Chrzanowski, Lars T1 - Spektroskopische Untersuchung von flüssigen Gefahrenstoffen mit Terahertz-Strahlung T2 - DGZfP-Jahrestagung CY - Münster, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-19524 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Deresch, Andreas T1 - Monte Carlo Modeling of Electron Transport Using CUDA Technology T2 - 18th WCNDT - World conference on nondestructive testing (2012) CY - Durban, South Africa DA - 2012-04-16 PY - 2012 AN - OPUS4-19525 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jakobs, Désirée T1 - Degradation of a biocide (Cu-HDO) in soil T2 - BAGECO 10 Conference Bacterial Genetics and Ecology CY - Uppsala, Sweden DA - 2009-06-15 PY - 2009 AN - OPUS4-19553 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noll, Matthias T1 - Exothermic processes in outdoor pine wood chip piles are linked to microbial community shifts T2 - BAGECO 10 Conference Bacterial Genetics and Ecology CY - Uppsala, Sweden DA - 2009-06-15 PY - 2009 AN - OPUS4-19552 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Buchholz, Uwe T1 - Material Characterisation of Cross-linked Polyethylene (XLPE) and Liquid Silicone Rubber (LSR) by means of Ultrasonic Spectroscopy N2 - For prediction of wave propagation in multilayered structures it is necessary to know the material properties. Important parameters are sound velocity (c) and attenuation ( ). Values found in the literature were not satisfactory mainly due to insufficient accuracy of measured attenuation. Experiments were carried out in Division VI.3 - Durability of Polymers. The ultrasonic test equipment was provided by Divisions VIII.1 - Measurement and Testing Technology; Sensors and VIII.4 - Acoustical and Electromagnetical Methods. T2 - ETG-Kongress 2009, Fachtagung 4: Diagnostik CY - Düsseldorf, Germany DA - 27.10.2009 PY - 2009 AN - OPUS4-20479 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lenke, Philipp T1 - A new model to calculate the Rayleigh scattering profiles in polymer optical fibers for distributed strain sensing T2 - 20. Conference on Optical Fiber Sensors OFS CY - Edinburgh, Scotland DA - 2009-10-05 PY - 2009 AN - OPUS4-20481 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schukar, Marcus T1 - Climatic investigations of microstructured polymer optical fibers N2 - - Behaviour of MPOF under climatic influences (e.g. temperature, humidity) is an important criterium for the use of MPOF as sensors or for communication - Different types of MPOF with varying hole structures were tested: I. Multimode MPOF (type 1) II. Graded index MPOF (type 2) T2 - 18th International Conference on Plastic Optical Fibers CY - Sydney, Australia DA - 07.09.2009 PY - 2009 AN - OPUS4-20485 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lang, Cindy T1 - Sensoren zum Monitoring des Nachernteverhaltens pflanzlicher Frischeprodukte T2 - 9. Dresdner Sensor-Symposium CY - Dresden, Germany DA - 2009-12-07 PY - 2009 AN - OPUS4-20489 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Fs-laser processing of metals: pulse duration effects and the role of air ionization T2 - COLA 2009, 10th International Conference on Laser Ablation CY - Singapore DA - 2009-11-22 PY - 2009 AN - OPUS4-20490 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hamann, F. T1 - Influence of the number of sulfonate groups of cyanine dyes on plasma binding in vitro and biodistribution in vivo. T2 - Molekulare Bildgebung 2009, Charité-Universitätsmedizin Berlin CY - Berlin, Germany DA - 2009-06-18 PY - 2009 AN - OPUS4-20427 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Linsinger, T. T1 - New certified reference materials for the sulfur content in petrol (gasoline) T2 - Euroanalysis XIV CY - Antwerp, Belgium DA - 2007-09-09 PY - 2007 AN - OPUS4-20429 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Joachim T1 - Cellular Polypropylene Ferroelectret Film: Piezoelectric Material for Non-Contact Ultrasonic Transducers T2 - 5th International Workshop on NDT in Progress CY - Prague, Czech Republic DA - 2009-10-12 PY - 2009 AN - OPUS4-20437 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meinel, Dietmar T1 - Zeitlicher Verlauf von verdeckter Korrosion - sichtbar gemacht mit Computertomographie T2 - Jahrestagung der DGZfP CY - Erfurt, Germany DA - 2009-05-10 PY - 2009 AN - OPUS4-20443 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Graf, N. T1 - Surface analysical measurements (XPS, ToF - SIMS, NEXAFS) of organosilane functionalized substrates to be used as microarray platforms T2 - First Joint BER II and BESSY II Users Meeting CY - Berlin, Germany DA - 2009-11-12 PY - 2009 AN - OPUS4-20416 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Different w-aminothiols and self-assembled monolayers thereof on gold T2 - First Joint Ber II and Bessy II Users Meeting, WISTA Adlershof CY - Berlin, Germany DA - 2009-11-12 PY - 2009 AN - OPUS4-20417 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Surface chemical imaging (ToF - SIMS and XPS) of carbohydrate microarray prototypes T2 - ECASIA'09 - 13th European Conference on Applications of Surface and Interface Analysis CY - Antalya, Turkey DA - 2009-10-18 PY - 2009 AN - OPUS4-20418 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liehr, Sascha T1 - Distributet perfluorinated POF strain sensor using OTDR and OFDR techniques T2 - Twentieth International Conference on Optical Fibre Sensors CY - Edinburgh, Scotland DA - 2009-10-05 PY - 2009 AN - OPUS4-20505 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Near-IR femtosecond and VUV nanosecond laser processing of TeO2 crystals in air T2 - SPIE Photonics West Conference: Laser Applications in Microelectronics and Optoelectronics Manufacturing XV CY - San Francisco, CA, USA DA - 2010-01-25 PY - 2010 AN - OPUS4-20558 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertovic, Marija T1 - Influence of Time Pressure in Relation to Stress on the Manual Ultrasonic Inspection Performance in German Nuclear Power Plants T2 - 14th European Congress of Work and Organizational Psychology CY - Santiago de Compostela, Spain DA - 2009-05-13 PY - 2009 AN - OPUS4-20545 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Einlagerung von nanodispersen Al2O3-Partikeln in einer Silberschicht zur Verbesserung der Verschleißeigenschaften T2 - DKG-DGM-Tagung CY - Aachen, Germany DA - 2009-03-23 PY - 2009 AN - OPUS4-20614 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Schwingungsspektroskopische Untersuchungen - ein empfindliches Werkzeug zum Nachweis der selbstbeschleunigenden Zersetzung von organischen Peroxiden T2 - 5. Kolloquium Prozessanalytik 2009, Sartorius College CY - Göttingen, Germany DA - 2009-11-30 PY - 2009 AN - OPUS4-20677 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bremser, Wolfram T1 - Be-10 and Cl-36 interlaboratory comparisons: Implications for terrestrial production rates? T2 - Goldschmidt Conference 2009 - "Challenges to our Volatile Planet" CY - Davos, Switzerland DA - 2009-06-21 PY - 2009 AN - OPUS4-20678 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Diel, W. T1 - Einfluss unterschiedlicher Dielektrika bei der Realisierung von Dickschichtkondensatoren im Tintenstrahldruck T2 - Dt. IMAPS-Konferenz CY - Munich, Germany DA - 2009-10-27 PY - 2009 AN - OPUS4-20610 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Makrlik, A. T1 - Sonderfeedstocks für CIM T2 - Jahrestagung DKG 2009 CY - Aachen, Germany DA - 2009-03-23 PY - 2009 AN - OPUS4-20611 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paulick, Carl T1 - Herstellung von ZTA über Gelcasting T2 - Jahrestagung DKG 2009 CY - Aachen, Germany DA - 2009-03-23 PY - 2009 AN - OPUS4-20612 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosner, Martin T1 - Boron isotope compositions of crop plants: A new tracer for the origin and authenticity of food T2 - TRACE 5th annual meeting and conference - TRACE in practice CY - Freising, Germany DA - 2009-04-01 PY - 2009 AN - OPUS4-20643 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinhardt, E. T1 - Beförderung von radioaktiven Stoffen in der ZfP - Was bringt uns das ADR 2009? T2 - DGZfP-Jahrestagung 2009 CY - Münster, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-20737 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malitte, Hans-Joachim T1 - Die neuen tragbaren Röntgenfluoreszenz Analysatoren in der ZfP - Strahlenschutz unter Anwenderbedingungen T2 - DGZfP-Jahrestagung 2009 CY - Münster, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-20738 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Rötgenrückstreuverfahren zur Charakterisierung von Objekten mit einseitigem Zugang T2 - DGZfP Jahrestagung CY - Münster, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-20687 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goebbels, Jürgen T1 - The first micro-tomographical study of a eurypterid T2 - 52nd Palaeontological Association Annual Meeting CY - Glasgow, Scotland DA - 2008-12-18 PY - 2008 AN - OPUS4-20690 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wrobel, Norma T1 - Recognition and Identifikation of Chemical Threats: What do we need? T2 - Future Security CY - Karlsruhe, Germany DA - 2009-09-29 PY - 2009 AN - OPUS4-20691 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Visualisation of radioactive materials and backscatter radiography with a novel collimation based camera system T2 - Future Security CY - Karlsruhe, Germany DA - 2009-09-29 PY - 2009 AN - OPUS4-20692 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Thorid T1 - Characterisation of zinc coatings for the application-oriented simulation of electroplating processes T2 - NanoCoatings 2010 CY - Dresden, Germany DA - 2010-03-28 PY - 2010 AN - OPUS4-20845 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Screening von aeroben mikrobiellen Konversionsvorgängen in Biotransformationen, Abbau- und Stoffwechselprozessen mit direkter GC-SPME-Analytik T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-20775 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jung, S. T1 - Bridging units tune the molecular switching behavior T2 - 3rd Symposium on Phase Transition and Dynamical Properties of Spin Transition Materials (PDSTM 2010), University of Tsukuba CY - Tsukuba, Japan DA - 2010-02-06 PY - 2010 AN - OPUS4-20778 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kneipp, Janina T1 - Raman spectroscopy on nanoparticle-influenced cellular systems T2 - BMBF-Nachwuchsförderung in der Biotechnologie CY - Berlin, Germany DA - 2010-01-26 PY - 2010 AN - OPUS4-20853 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Physikalisch-chemische Charakterisierung von CNT T2 - Inno. CNT Jahrestagung CY - Marl (North Rhine-Westphalia), Germany DA - 2010-01-20 PY - 2010 AN - OPUS4-20860 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuhlich, Paul T1 - New disinfection by-products of musk fragrance AHTN T2 - Umwelt 2010 - Von der Erkenntnis zur Entscheidung CY - Dessau-Roßlau, Germany DA - 2010-09-06 PY - 2010 AN - OPUS4-21889 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Purohit, Purv T1 - Structural Investigation of Nanocomposites based on Poly(methyl methacrylate) and Polyhedral Oligomeric Silsesquioxones T2 - 6th International Conference on Broadband Dielectric Spectroscopy and its Applications CY - Madrid, Spain DA - 2010-09-07 PY - 2010 AN - OPUS4-21892 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bresch, Harald T1 - Size determination of non crystalline Silica particles with different methods T2 - International Aerosol Conference 2010 CY - Helsinki, Finland DA - 2010-08-29 PY - 2010 AN - OPUS4-21927 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Kontrolle der Härtungsreaktion bei Faserverbundbauteilen T2 - 10. Schwarzheider Kunststoffkolloquium CY - Schwarzheide, Germany DA - 2010-09-08 PY - 2010 AN - OPUS4-21930 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Application of Methane as a Gaseous Modifier for the Determination of Silicon Using ET AAS T2 - European Symposium on Atomic Spectrometry ESAS 2010 CY - Wroclaw, Poland DA - 2010-09-05 PY - 2010 AN - OPUS4-21789 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Femtosecond laser-induced periodic surface structures in semiconductors: recent approaches to explain their sub-wavelength periodicities T2 - Summer School 2010 des DFG Schwerpunktprogramms 1327 "Optisch erzeugte Sub-100 nm-Strukturen für biomedizinische und technische Anwendungen" CY - Hanover, Germany DA - 2010-09-20 PY - 2010 AN - OPUS4-21993 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. A1 - Bartholmai, Matthias T1 - Mikrodrohne zur Gasmessung in Gefahrenszenarien T2 - Sensor + Test 2010 CY - Nuremberg, Germany DA - 2010-05-18 PY - 2010 AN - OPUS4-22018 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Temperaturabhängige Prüfung von Beschleunigungsaufnehmern für stoßartige Beanspruchungen N2 - Motivation: - Beschleunigungsaufnehmer (BA) sind in ihrer Funktion und in ihren Messeigenschaften stark temperaturabhängig - kritisch ist z. B. der Dämpfungsmechanismus der seismischen Masse piezoelektrischer BA - Anwendung: z. B. Fallversuche mit spezifischer Temperaturvorgabe (- 40 °C, + 100 °C) - Entwicklung eines geeigneten Prüfverfahrens zur temperaturabhängigen Untersuchung von BA T2 - 15. ITG-/GMA-Fachtagung "Sensoren und Messsysteme 2010"/Messe "Sensor + Test 2010" CY - Nuremberg, Germany DA - 18.05.2010 PY - 2010 AN - OPUS4-22021 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weißhaupt, Petra T1 - Tracking nitrogen metabolism of wood decaying basidiomycetes by EA-IRMS T2 - 9. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse zusammen mit dem 22. ICPMS-Anwendertreffen, BAM CY - Berlin, Germany DA - 2010-09-06 PY - 2010 AN - OPUS4-22006 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weißhaupt, Petra T1 - Exploring the nitrogen uptake of Trametes versicolor and Oligoporus placenta by EA-IRMS and stable isotope Iabelling T2 - Symposium Biotransformation by Fungal Cells or Fungal Enzymes CY - Senftenberg, Germany DA - 2010-09-30 PY - 2010 AN - OPUS4-22007 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Straub, Franka T1 - TOF-SIMS mapping of stainless steel microstructures T2 - SIMS EUROPE 2010 - 7th European Workshop on Secondary Ion Mass Spectrometry CY - Münster, Germany DA - 2010-09-19 PY - 2010 AN - OPUS4-22011 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Daum, Werner T1 - Sensor Technologies for Packages, Storage, and Geological Disposal of Radioactive Waste T2 - ANDRA Workshop on Monitoring Technologies - Potential Application to Monitoring of Geological Repositories for Radioactive Waste CY - Troyes, France DA - 2010-06-07 PY - 2010 AN - OPUS4-22031 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nöther, Nils T1 - Monitoring of a coastal slope: A comparison of integral and distributed strain and temperature measurements with optical fiber sensors T2 - European Workshop on Structural Health Monitoring CY - Sorrento, Italy DA - 2010-06-28 PY - 2010 AN - OPUS4-22032 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liehr, Sascha T1 - A novel fiber optic technique for quasi-distributed and dynamic measurement of length change and refractive index T2 - 4th European Workshop on Optical Fibre Sensors CY - Oporto, Portugal DA - 2010-09-08 PY - 2010 AN - OPUS4-22053 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Bauwerke unter Beobachtung. Funkbasiertes Sensornetzwerk zur Schadensfrüherkennung an Bauwerken T2 - Hannover-Messe CY - Hanover, Germany DA - 2010-04-19 PY - 2010 AN - OPUS4-22058 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schlüter, Vivien T1 - Flugzeuge mit Nerven aus Glas T2 - Wissenschaftsmeile Berlin Süd-West bei der Firma Wüstefeld in der Schloßstraße CY - Berlin, Germany DA - 2010-05-16 PY - 2010 AN - OPUS4-22048 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Alexander T1 - Bi-spektrale Messung der Reflexionseigenschaften von fluoreszierenden Materialien N2 - Beim bispektralen Verfahrensprinzip (auch 2-Monochromatoren-Methode genannt) zur Charakterisierung fluoreszierender Reflexionsproben wird das Probenmaterial monochromatisch bestrahlt und für jede dieser anregenden Wellenlängen das emittierte Spektrum monochromatisch gemessen. Dies hat gegenüber einer polychromatischen Anregung (z. B. Normlichtart D65) den Vorteil, dass spektrale Materialfunktionen (Gesamt-, Reflexions- und Lumineszenz-Strahldichtefaktoren sowie das Lumineszenz-Anregungsspektrum) und diverse Farbmaßzahlen (Sicherheits- und Kontrastfarben; Referenzmaterial) für beliebige Anregungsspektren (Normlichtarten) bestimmt werden können. T2 - Licht 2010 (Gemeinschaftstagung der deutschen, niederländischen, schweizerischen und österreichischen lichttechnischen Verbände) CY - Vienna, Austria DA - 17.10.2010 PY - 2010 AN - OPUS4-22050 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppe, Enrico T1 - Strukturmonitoring am Beispiel von Flugzeugen mit Messverfahren der Fachgruppe "Mess- und Prüftechnik; Sensorik" T2 - Hannover-Messe CY - Hanover, Germany DA - 2010-04-19 PY - 2010 AN - OPUS4-22063 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noskov, Sergey T1 - Characterization of Polymer Nanoparticles by Field-Flow Fractionation (FFF) T2 - Polydays 2010 CY - Berlin, Germany DA - 2010-10-03 PY - 2010 AN - OPUS4-22113 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schlüter, Vivien T1 - Strukturintegrierte Sensorik in Flugzeugen T2 - Hannover-Messe CY - Hanover, Germany DA - 2010-04-19 PY - 2010 AN - OPUS4-22085 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schukar, Vivien T1 - How reliable do fibre Bragg grating patches perform as strain sensors? T2 - 4th European Workshop on Optical Fibre Sensors CY - Oporto, Portugal DA - 2010-09-08 PY - 2010 AN - OPUS4-22086 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gallo, Emanuela T1 - Fire behaviour and thermal analysis of poly(hydroxybutyrate-co-valerate) based compounds T2 - 6th International Conference on Modification, Degradation and Stabilization of Polymers (MODEST) CY - Athens, Greece DA - 2010-09-05 PY - 2010 AN - OPUS4-22106 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Braun, Ulrike T1 - Durability of Thermoplastic Polyurethanes (TPU) T2 - Polydays 2010 CY - Berlin, Germany DA - 2010-10-03 PY - 2010 AN - OPUS4-22107 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehnik-Habrink, Petra T1 - Multi-residue analysis of PAH, PCB and OCP optimized for organic matter of forest oil T2 - International Symposium on Environmental Analytical Chemistry CY - Rome, Italy DA - 2010-10-04 PY - 2010 AN - OPUS4-22204 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Droste, Bernhard T1 - Brandnew Fire Test facilities at "BAM Test Site Technical Safety" T2 - 16th International Symposium on the Packaging and transportation of Radioactive Materials PATRAM CY - London, England DA - 2010-10-03 PY - 2010 AN - OPUS4-22129 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Th. T1 - Untersuchung heterogen katalysierter Selektivoxidationen im Explosionsbereich unter Verwendung von Mikrostrukturreaktoren T2 - ProcessNet Jahrestagung 2010 CY - Aachen, Germany DA - 2010-09-21 PY - 2010 AN - OPUS4-22158 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hönnscheidt, Christoph T1 - Continuous Synthesis of Functional Nanoparticles T2 - Polydays 2010 CY - Berlin, Germany DA - 2010-10-03 PY - 2010 AN - OPUS4-22146 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koshkina, Olga T1 - Fluorescent Dye-labeled Polyorganosiloxane Nanospheres for Biomedical Applications T2 - Polydays 2010 CY - Berlin, Germany DA - 2010-10-03 PY - 2010 AN - OPUS4-22147 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Martin A1 - Lüth, Peter T1 - Isoperibole Warmlagerung Einfluss der Streuung experimentell ermittelter Selbstentzündungstemperaturen auf die Übertragung in den technischen Maßstab T2 - 10. Fachtagung Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen, Germany DA - 2010-11-04 PY - 2010 AN - OPUS4-22302 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raedel, Martina T1 - Anti Corrosion Systems for Iron and Cast Iron Objects T2 - Internationales Kolloquium: Archeological Iron Conservation CY - Stuttgart, Germany DA - 2010-06-24 PY - 2010 AN - OPUS4-22260 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Komann, Steffen T1 - Mechanical Assessment within Type B Packages Approval, The Application of Static and Dynamic Calculation Approaches T2 - 16th International Symposium on the Packaging and Transport of Radioactive Materials CY - London, England DA - 2010-10-03 PY - 2010 AN - OPUS4-22252 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niebergall, Ute T1 - Comparison of the stress crack resistance of polyethylene grades with the test performance behaviour of the transport of dangerous goods T2 - PPS 27 World Congress of the Polymer Processing Society CY - Marrakesh, Morocco DA - 2011-05-09 PY - 2011 AN - OPUS4-23771 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nie, Yaru T1 - Surface modification of carbon nanofibers (CNFs) with silanes for tuning the conductive and mechanical properties of CNFs/epoxy composites T2 - 5th Asia-Europe Symposium on Processing and Properties of Reinforced Polymers CY - Dresden, Germany DA - 2011-05-29 PY - 2011 AN - OPUS4-23777 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Analysis of plasma-generated radicals on polymer surfaces T2 - 16th International Symposium on Plasma Chemistry CY - Taormina, Italy DA - 2003-06-22 PY - 2003 AN - OPUS4-3095 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mitropetros, Constantinos T1 - Cavitation after shock wave propagation inside a chemically active organic bubbly liquid T2 - Plasma Physics and Short Time-Scale Physics Spring Meeting, RWTH Aachen CY - Aachen, Germany DA - 2003-03-24 PY - 2003 AN - OPUS4-3096 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Ellipsometry and Standardisation: A Publicly Available Specification (PAS) for Ellipsometry - Measurement of Reference Coatings and Non-ideal Samples T2 - International Conference on Spectroscopic Ellipsometry (ICSE 3) CY - Vienna, Austria DA - 2003-07-07 PY - 2003 AN - OPUS4-3097 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fuß, Oliver T1 - Evaluation of Limiting Oxygen Concentration of Fuel/Air/Inert Gaseous Mixtures by Means of Calculated Adiabatic Flame Temperatures and Measured Fuel/Air Lower Explosion Limits T2 - Chemical Engineering Transactions / 6th Italian Conference on Chemical and Process Engineering CY - Pisa, Italy DA - 2003-06-08 PY - 2003 AN - OPUS4-3098 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Surface functionalization in ammonia microwave plasmas for biomedical applications T2 - 16th International Symposium on Plasma Chemistry CY - Taormina, Italy DA - 2003-06-22 PY - 2003 AN - OPUS4-3100 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohse, Volkmar T1 - Explosionsschutz mit Gaswarngeräten T2 - Posteraustellung Sensorik, BAM CY - Berlin, Germany DA - 2002-10-01 PY - 2002 AN - OPUS4-3036 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Aßmus, Kristin T1 - Verformung und Gefügetransformation bei Schwingungsverschleiß von austenitischen FeCrNi-Legierungen T2 - 37. Metallographie-Tagung 2003 CY - Berlin, Germany DA - 2003-09-17 PY - 2003 AN - OPUS4-3173 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blümel, Peter T1 - Compatibility testing of co-extruded polyethylene for pesticide containers T2 - PIRA, Plastics packaging - compatibility testing for dangerous goods - new developments, Brussels City Centre CY - Brussels, Belgium DA - 2003-09-30 PY - 2003 AN - OPUS4-3124 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pinto, H. T1 - Microstructure Changes due to Wear at Cryogenic Temperatures T2 - HASYLAB user's meeting "Research with Synchrotron Radiation", HASYLAB/DESY CY - Hamburg, Germany DA - 2003-01-31 PY - 2003 AN - OPUS4-3150 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ploska, Ute T1 - A new long-term stable biomaterial containing Apatite and Calcium-Zirconium-Orthophosphate T2 - 17th European Conference of Biomaterials CY - Barcelona, Spain DA - 2002-09-11 PY - 2002 AN - OPUS4-3142 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - 2D-HPLC und MALDI-TOF-MS - neue Möglichkeiten für die Polymer-charakterisierung T2 - 5. Berliner Polymertage 1994 CY - Potsdam, Germany DA - 1994-10-05 PY - 1994 AN - OPUS4-3252 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina T1 - 3rd European-American Workshop on Reliability of NDE and Demining T2 - NDRF Summer Conference 2002 CY - Rosersberg, Sweden DA - 2002-08-28 PY - 2002 AN - OPUS4-3276 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Griepentrog, Michael T1 - Evaluation of mechanical properties in the nanometer range - trueness and precision N2 - The aim of this study was to evaluate the limitations in the nanometer range film thickness for the application of instrumented indentation test (IIT) and to prepare an accuracy experiment (round robin) for validation of IIT and certification of coating/substrate systems. T2 - The 51st Annual Conference on Mass Spectrometry (AIST 2003) CY - Tsukuba, Japan DA - 2003-05-14 PY - 2003 AN - OPUS4-3321 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brink, Arne T1 - Anwendung der Impuls-Thermografie als zerstörungsfreies Prüfverfahren im Bauwesen N2 - Ziel der Untersuchungen ist die Weiterentwicklung der Impuls-Thermografie als quantitatives zerstörungsfreies Prüfverfahren zur Ortung oberflächennaher Inhomogenitäten in Bauteilen und Bauwerken. Zur Zeit werden Putzablösungen auf Mauerwerk bzw. Beton, Hohlstellen und Kiesnester in Beton, Ablösungen und Hohlstellen bei Spaltklinkern im Dickbettmörtel auf Beton, Verbundprobleme von CFK-Laminaten auf Beton sowie Ablösungen von Bitumen-Abdichtungsbahnen auf Stahl untersucht. T2 - Fachtagung (BAUFACH) "Bauwerksdiagnose - Praktische Anwendungen zerstörungsfreier Prüfungen" CY - Leipzig, Germany DA - 25.10.2001 KW - Mauerwerk KW - Hohlstellen KW - CFK-Laminate PY - 2001 AN - OPUS4-3300 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weritz, Friederike T1 - Laser-induced breakdown spectroscopy as a tool for the characterization and sorting of concrete waste material in view of high-order re-use T2 - Non-Destructive Testing in Civil Engineering (NDT-CE 2003) CY - Berlin, Germany DA - 2003-09-16 PY - 2003 AN - OPUS4-3375 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosenthal, Martina T1 - BAM Reference Procedures T2 - ILAC CY - Berlin, Germany DA - 2002-09-23 PY - 2002 AN - OPUS4-3383 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Binkowski, Sigrid T1 - Vergleich der Präparationsverfahren der Gefüge keramischer Werkstoffe T2 - Metallographie-Tagung 2001 CY - Neu-Ulm, Germany DA - 2001-09-19 PY - 2001 AN - OPUS4-3436 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Binkowski, Sigrid T1 - Gefügecharakterisierung der austenitischen FeCrNi-Legierung 1.4876 nach Reibbeanspruchung bei 37 K T2 - Metallographie-Tagung 2003 CY - Berlin, Germany DA - 2003-09-17 PY - 2003 AN - OPUS4-3437 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witke, Klaus T1 - Cathodoluminescence and RAMAN Studies on Permineralisations of Medullosa sp. T2 - 11. Tagung Festkörperanalytik CY - Chemnitz, Germany DA - 2001-06-25 PY - 2001 AN - OPUS4-3442 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - Characterization of unusual Silsesquioxane-Based Polymer Architectures Based on the Coupling of Liquid Chromatography and MALDI-TOF-MS T2 - XIth International Symposium on Organosilicon Chemistry CY - Montpellier, France DA - 1996-09-01 PY - 1996 AN - OPUS4-3416 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - Characterization of thermal and hydrolytic degradation of polylactides by Liquid Chromatography and MALDI-TOF mass spectrometry T2 - International Symposium on "Biodegradable Materials" and Hamburger Makromolekulares Symposium 1996 CY - Hamburg, Germany DA - 1996-10-07 PY - 1996 AN - OPUS4-3417 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schartel, Bernhard T1 - Chemiluminescence - An advanced method for small extent, early stages and accelerated testing of the thermooxidative degradation in polymers T2 - Makromolekulares Kolloquium CY - Freiburg, Germany DA - 2000-02-24 PY - 2000 AN - OPUS4-3447 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - Characterization of Polymer Heterogeneity During Degradation Processes by Liquid Chromatography and MALDI-TOF-MS T2 - 9th International Symposium on Polymer Analysis and Characterization CY - Oxford, England DA - 1996-07-01 PY - 1996 AN - OPUS4-3453 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weh, Lothar T1 - Dispersibility optimizion of ceramic particles for ML-LTCC production T2 - International Congress for Particle technology CY - Nuremberg, Germany DA - 2004-03-16 PY - 2004 AN - OPUS4-3405 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Much, Helmut T1 - Characterization of polyethers using different chromatographic techniques and MALDI-TOF-MS T2 - 19th International Symposium on Column Liquid Chromatography (HPLC ´95) CY - Innsbruck, Austria DA - 1995-05-28 PY - 1995 AN - OPUS4-3456 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - The Behaviour of Polymers Confined to Nanoporous Glasses Investigated by Relaxation Experiment T2 - Polydays 2004 CY - Potsdam, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-4354 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steckert, Carsten T1 - Digital image analysis for colorimetric surface inspection of paint coatings stressed by materials testing T2 - Second European Conference on Color in Graphics Imaging and Vision CY - Aachen, Germany DA - 2004-04-05 PY - 2004 AN - OPUS4-4311 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - Adhesion between metal atoms and polymer surfaces fitted with different types and variable density of functional groups T2 - International Workshop on Plasma Polymers and Related Materials CY - Antalya, Turkey DA - 2004-10-06 PY - 2004 AN - OPUS4-4335 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Self-Diffusion of Poly(Propylene Glycol) Confined to Nanoporous Glasses by Pulsed Field Gradient NMR T2 - Polydays 2004 CY - Potsdam, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-4337 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Neutron Spectrocopy on Nanoconfined Polymers T2 - 7. International Conference on Quasi-Elastic Neutron Scattering CY - Arcachon, France DA - 2004-09-01 PY - 2004 AN - OPUS4-4318 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - The Behaviour of Polymers confined to Nanoporous Glasses investigated by Relaxation Experiments T2 - Polydays 2004 CY - Potsdam, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-4319 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Neutron spectroscopy on polymers confined to nanoporous glasses T2 - Polydays 2004 CY - Potsdam, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-4320 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heidt, Heinrich T1 - DGZfP INFORMATION SERVICES - A PLATFORM FOR STANDARDIZATION AND PUBLICATION ENQUIRY T2 - 16th World Conference on Nondestructive Testing (WCNDT 2004) CY - Montreal, Canada DA - 2004-08-30 PY - 2004 AN - OPUS4-4405 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lück, Detlef T1 - Statistische Verfahren zur Abschätzung der Gleichwertigkeit von Bodenuntersuchungen N2 - Es wird eine neue statistische Modellierung vorgestellt, die auf der Grundlage des Äquivalenznachweises die Gleichwertigkeit eines Analysenverfahrens im Vergleich zu einem Referenzverfahren prüft. Anders als bei der klassischen Vorgehensweise in der Wassernorm DIN 38402-71 (DEV A71), bei der die Varianzen mit Hilfe des F-Tests und die Mittelwerte mit dem t-Test oder der Orthogonalregession geprüft wer-den, benötigt das vorgestellte statistische Modell eine geringere Anzahl an Einzelun-tersuchungen. Der hohe analytisch-chemischen Aufwand bei der Untersuchung von Bodenproben wird damit in Grenzen gehalten. Die Gleichwertigkeitsprüfung ist daher in der Praxis leichter anwendbar. Die Prüfungen können von Ringversuchsveranstaltern im Rahmen von Ringversu-chen ausgeführt werden. Hierbei kommt eine robuste Statistik zum Einsatz, die auf dem Hampelschätzer zur Ermittlung des Mittelwertes und auf der Q-Methode zur Schätzung der Wiederhol- und Vergleichsstandardabweichung beruht. Damit wird vermieden, das problematische Ausreißertests die Prüfungen negativ beeinflussen können. Diese Methode ist bereits in der Wassernorm DIN 38402-45 (DEV A 45) "Ringversuche zur externen Qualitätskontrolle von Laboratorien" beschrieben. Weiterhin werden statistische Prüfungen im Rahmen von in-house Studien zur Vali-dierung neuer Prüfverfahren vorgestellt. Mit den vorliegenden Algorithmen ist jedem Labor die Möglichkeit einer Gleichwertigkeitsprüfung bei der Neuentwicklung von Prüfverfahren oder beim Einsatz schon bestehender sogenannter "Hausverfahren" gegeben. Die Prüfungen erfolgen dabei entweder im Vergleich zu einem Referenz-verfahren - im allgemeinen dem festgelegten Normverfahren - oder zu dem Refe-renzwert eines zertifizierten Boden-Referenzmaterials. Die statistische Prüfungen beziehen sich nicht nur auf den Mittelwert der wiederhol-ten Kontrollmessungen, sondern es wird auch die Präzision der Alternativverfahren beurteilt. Dazu werden die Wiederholstandardabweichungen und die Vergleichsstan-dardabweichung separat geprüft. Somit ist die Forderung nach gleichwertiger Rich-tigkeit aber auch gleichwertiger Präzision prüfbar. Hinzukommt, dass in dem neuen statistischen Modell des Äquivalenzprinzips, das aus dem medizinischen Bereich der Prüfung von Behandlungsmethoden stammt, eine Schranke vorgegeben werden kann, die von dem zu prüfenden Verfahren unterschritten werden muss, um als gleichwertig anerkannt zu werden. Auf dieser Grundlage können die Prüfungen bes-ser an die Bedürfnisse der Praxis angepasst werden. D.h. in sicherheits- oder ge-sundheitsrelevanten Bereichen kann die Schranke niedriger und in anderen Berei-chen höher gewählt werden. Der Anwender legt vor der statistischen Prüfung die "maximalen tolerierten theoretischen Abweichungen" (üblicherweise 5 - 25 %) der Wiederfindungsrate sowie der Wiederhol- und Vergleichsstandardabweichung fest, mit der die Prüfungen erfolgen soll. Auf der Basis der messtechnisch ermittelten Prüfergebnisse, die nach Untersuchung verschiedener Bodenproben in typischen Matrizes ermittelt wurden, können die statistischen Prüfungen für jede Probe einzeln oder für alle Proben gemeinsam ausgeführt werden. Voraussetzung bei der Zusam-menfassung von Probenergebnissen ist allerdings, dass eventuell vorhandene pro-benspezifische Einflüsse vernachlässigt werden können. Nach Berechnung der sta-tistischen Prüfgrößen erfolgt die Aussage, ob eine Äquivalenz und damit eine Gleich-wertigkeit der Prüfverfahren auf der Grundlage der in einem Laboratorium oder in unterschiedlichen Laboratorien untersuchten Proben gegeben ist. Geeignete Re-chenprogramme werden von der Firma quo data, Dresden, vertrieben. An Hand der Ringversuchsauswertungen einiger BAM-Boden-Ringversuche sowie aus systematischen Untersuchungen zur PAK-Bestimmung in Bodenproben für ver-schiedene Lösungsmittel und Extraktionsverfahren werden Ergebnisse der statisti-schen Prüfungen erläutert. T2 - Workshop: Methoden und Verfahren nach Bundes-Bodenschutz- und Altlastenverordnung (BBodSchV), veranstaltet vom Fachbeirat Verfahren und Methoden für Bodenuntersuchungen (FBU), Bundesvereinigung Boden und Altlasten e.V. (BVBA) und DIN, WISTA-Tagungs-Centrum Adlershof CY - Berlin, Germany DA - 2004-10-19 PY - 2004 AN - OPUS4-4408 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Munz, Martin T1 - Concentration gradients at the thermoset/thermoplastic interface of amine-cured epoxy/poly(vinylpyrrolidone) T2 - "Polydays 2004", Universität Potsdam, Campus "Am Neuen Palais" veranstaltet vom Berlin-Brandenburgischen Verband für Polymerforschung (BVP) Poster T15 (Poster Session 05.10.2004) CY - Potsdam, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-4438 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weritz, Friederike T1 - Quantitative determination of S-content in building materials with Laser-induced Breakdown Spectroscopy T2 - 3rd International Conference on Laser Induced Plasma Spectroscopy and Applications (LIBS 2004) CY - Torremolinos, Spain DA - 2004-09-28 PY - 2004 AN - OPUS4-4494 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mc Hugh, Jarlath T1 - Charakterisierung eines Epoxidharzes hinsichtlich seiner Eignung als Matrixmaterial und "Backing" für Ultraschallwandler T2 - Polydays 2004, Bi-annual International Meeting on Polymers, University of Potsdam CY - Potsdam, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-4502 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Peplinski, Burkhard T1 - Estimates of the uncertainty of lattice parameters refined from neutron powder diffraction data T2 - 9th European Powder Diffraction Conference (EPDIC-9) CY - Prague, Czech Republic DA - 2004-09-02 PY - 2004 AN - OPUS4-4480 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Breitenbach, Martin T1 - Absoluter Anschluss der Stoffmenge an die SI-Einheiten Masse, Zeit und Stromstärke T2 - Aushang im Zweiggelände Adlershof der BAM, Haus 8.15, Flur - 5. Etage CY - Berlin, Germany DA - 2004-09-24 PY - 2004 AN - OPUS4-4519 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klobes, Peter T1 - Rock porosity characterization by means of mercury porosimetry / CT combination technique T2 - Tag der Chemie, Gemeinschaftsveranstaltung der Univerität Potsdam und der Berliner Universitäten (FU Berlin, HU Berlin, TU Berlin), der Technischen Fachhochschule Berlin und des Verbandes der Chemischen Industrie e.V., Landesverband Nordost CY - Potsdam, Germany DA - 2004-07-07 PY - 2004 AN - OPUS4-4522 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Röhl-Kuhn, Barbara T1 - New Porous Certified Reference Materials (CRMs) - Method: Mercury Intrusion T2 - COPS VI - 6. International Symposium on the Charakterization of Porous Solids CY - Alicante, Spain DA - 2002-05-08 PY - 2002 AN - OPUS4-4526 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Röhl-Kuhn, Barbara T1 - New Porous Certified Reference Materials (CRMs) for the Mercury Intrusion Method in the Pressure Range from 0.2 to 2 MPa T2 - XI. Workshop über die Charakterisierung von feinteiligen und porösen Festkörpern CY - Bad Soden, Germany DA - 2002-11-14 PY - 2002 AN - OPUS4-4531 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoinkis, E. T1 - Direct evidence for the difference in the spatial distribution of vapor-filled voids on filling drainage of N2 at 78 K T2 - 7th Conference on Fundamental Adsorption (Best Poster Award) CY - Nagasaki, Japan DA - 2001-05-20 PY - 2001 AN - OPUS4-4532 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Comprehensive Fire Behaviour Assessment of Nanocomposites T2 - 9th European Meeting on Fire Retardancy and Protection of Materials, FRPM '03 CY - Lille, France DA - 2003-09-17 PY - 2003 AN - OPUS4-4615 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fengler, Petra T1 - Hidden Ultrasound Sensors in a Mouding Tool T2 - 6th Internationale AVK-Tv Conference CY - Baden-Baden, Germany DA - 2003-09-07 PY - 2003 AN - OPUS4-4617 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frübing, P. T1 - Ferroelectric and Non-Ferroelectric Contributions to Piezo- and Pyroelectricity in Polyamide 11 T2 - The 10th European Meeting on Ferroelectricity "EMF 2003" CY - Cambridge, England DA - 2003-08-03 PY - 2003 AN - OPUS4-4618 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stein, G. T1 - In situ XRD investigation of the CCVD Synthesis of Graphitic Nanofibers and the Adsorption/Desorption of Hydrogen T2 - E-MRS Spring Meeting CY - Strasbourg, France DA - 2003-06-10 PY - 2003 AN - OPUS4-4621 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Aßmus, Kristin T1 - Methods for Investigating Austenite Stability during Tribological Stressing of FeCrNi Alloys T2 - 26th European Conference on Acoustic Emission Testing (EWGAE 2004) CY - Berlin, Germany DA - 2004-09-15 PY - 2004 AN - OPUS4-4622 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Breitenbach, Martin T1 - Die Coulometrie als absolute Methode für die Zertifizierung von Referenzmaterial T2 - Aushang im Zweiggelände Adlershof der BAM, Haus 8.15, Flur, 6.Etage CY - Berlin, Germany DA - 2004-09-24 PY - 2004 AN - OPUS4-4623 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pinto, H. T1 - Microstructural Changes During Friction at Cryogenic Temperatures T2 - HASYLAB Users'Meeting "Research with Synchrotron Radiation" CY - Hamburg, Germany DA - 2004-01-30 PY - 2004 AN - OPUS4-4624 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kohl, Christoph T1 - Datenfusion komplementärer Impuls-Echo Verfahren zur zerstörungsfreien Untersuchung von Betonbauteilen T2 - DACH-Jahrestagung 2004: ZfP in Forschung, Entwicklung und Anwendung CY - Salzburg, Austria DA - 2004-05-17 PY - 2004 AN - OPUS4-4566 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred T1 - Naturwissenschaftliche Untersuchungen und Restaurierung von Glasmalereien des 19. Jahrhunderts aus der Kirche zu Lindow T2 - Denkmal 2004, Europäische Messe für Restaurierung, Denkmalpflege und Stadterneuerung CY - Leipzig, Germany DA - 2004-10-27 PY - 2004 AN - OPUS4-4593 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goering, Harald T1 - Kinetische Modellierung der Kautschukvilkanisation anhand von DSC- und DMA-Messungen T2 - GEFTA 2003 Thermische Analyse und Kalorimetrie CY - Augsburg, Germany DA - 2003-09-15 PY - 2003 AN - OPUS4-4627 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goering, Harald T1 - Thermisch induzierte Morphologieänderungen von SiCN-Nanokompositen T2 - GEFTA 2003 Thermische Analyse und Kalorimetrie CY - Augsburg, Germany DA - 2003-09-15 PY - 2003 AN - OPUS4-4628 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Smith, D. T. T1 - Evaluation of Mechanical Properties in the Nanometer Range T2 - HARDMEKO 2004 CY - Washington, D.C., USA DA - 2004-11-11 PY - 2004 AN - OPUS4-4629 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Röhl-Kuhn, Barbara T1 - New Porous Certified Reference Materials (CRMs); Method: Mercury Intrusion - Pressure range between 0.2 and 2 MPa; BAM-124 - BAM-P126 N2 - The main problem in the certification of pressure-volume curves for the high-pressure range of the mercury intrusion is the fact that the uncertainty of the pressure (x-axis) should not be neglected. Additionally, the use of pressure-volume curves from different laboratories using different apparatus leads to incomparability of these curves and requires a correction. This is known in the statistical literature as warping. The use of point wise intervals causes difficulties in the interpretation of the results. Such problems have been eliminated in the certification of pressure-volume curves of the new standards ERM®-FD123 and BAM-P124 to BAM-P126. These standards are reference materials for the comparatively low-pressure range of the mercury intrusion method. The materials BAM-P124 and BAM-P126 are made up as flat membranes. The production of these membranes (a-alumina ceramics) was carried out in the HITK, Hermsdorf, Germany. The long ceramic tape was divided into 50 rectangular tapes. These tapes were sintered. Each of the tapes has been cut in 30 dies, numbered by a laser beam. Samples were assigned systematically covering all 50 tapes to allow for an optimal modelling of material inhomogeneities. T2 - XII. Workshop über die Charakterisierung von feinteiligen und porösen Festkörpern CY - Bad Soden, Germany DA - 2004-11-16 PY - 2004 AN - OPUS4-4631 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hasenstab, Andreas T1 - Mobile Röntgenblitzröhre zum Auffinden von Holzschäden T2 - DACH-Jahrestagung 2004: ZfP in Forschung, Entwicklung und Anwendung CY - Salzburg, Austria DA - 2004-05-17 PY - 2004 AN - OPUS4-4637 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - A new type of certified reference material for length calibration and testing of lateral resolution in the nanometre range T2 - Practical Surface Analysis PSA-04 & 5th Korea-Japan Symposium on Surface Analysis - KJISSA CY - Jeju, South Korea DA - 2004-10-04 PY - 2004 AN - OPUS4-4597 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Pulsed Plasma-polymerized Films Prepared from Organic Molecules: Characterization by X-ray Absorption Spectroscopy, Photoelectron Spectroscopy and Time of Flight Static Secondary Ion Mass Spectrometry T2 - Practical Surface Analysis PSA-04 & 5th Korea-Japan International Symposium on Surface Analysis - KJISSA CY - Jeju, South Korea DA - 2004-10-04 PY - 2004 AN - OPUS4-4598 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - Ein neuer Typ von Referenzmaterial für die Längenkalibrierung und die Bestimmung der lateralen Auflösung in der Oberflächenanalytik T2 - 13. Tagung angewandte Oberflächenanalytik (AOFA 13) CY - Dresden, Germany DA - 2004-09-14 PY - 2004 AN - OPUS4-4601 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Scanning transmission X-ray microscopy (STXM) of h-bar preparations of chemically modified DLC films T2 - 324. Heraeus-Seminar: Exploring the nanostructures of soft materials with x-rays, Wilhelm und Else Heraeus-Stiftung CY - Bonn, Germany DA - 2004-05-09 PY - 2004 AN - OPUS4-4605 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schartel, Bernhard T1 - Polymer-Layered Silicate Nanocomposites: new Flame Retardant Apporoach for polymeric Materials T2 - Hannover-Messe 2003 CY - Hanover, Germany DA - 2003-04-07 PY - 2003 AN - OPUS4-4614 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - Zuverlässige Hochleistungskeramik durch moderne Prüfverfahren T2 - Materialica 2003 CY - Munich, Germany DA - 2003-09-15 PY - 2003 AN - OPUS4-4723 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - Keramik für Mikrosystemtechnik und Sensorik T2 - Materialica 2003 CY - Munich, Germany DA - 2003-09-15 PY - 2003 AN - OPUS4-4724 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Georg T1 - Biocompatibility studies of a new bone cement using humane bone marrow cells - preliminary results T2 - 18. European Conference on Biomaterials CY - Stuttgart, Germany DA - 2003-10-01 PY - 2003 AN - OPUS4-4706 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gildenhaar, Renate T1 - Biocompatibility screening of different calcium phosphate ceramics T2 - Internationales Symposium "Interface Biology of Implants" CY - Rostock, Germany DA - 2003-05-14 PY - 2003 AN - OPUS4-4710 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Water relaxation behavior inside the pores and cages of some molecular sieves T2 - International Workshop on Dynamics in Confinement CY - Grenoble, France DA - 2003-01-23 PY - 2003 AN - OPUS4-4656 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Molecular dynamics of 4n-octycyanobiphenyl confined to nanoporous SBA molecular sieves T2 - International Workshop on Dynamics in Confinement CY - Grenoble, France DA - 2003-01-23 PY - 2003 AN - OPUS4-4657 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frunza, L. T1 - Water relaxation behavior inside the pores and cages of different molecular sieves T2 - 15. Deutsche Zeolith Tagung CY - Kaiserslautern, Germany DA - 2003-03-05 PY - 2003 AN - OPUS4-4658 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frunza, L. T1 - Molecular dynamics of surface layer in cyanobiphenyl-aerosil systems with high silica density T2 - 7. European Conference on Liquid Crystals CY - Jaca, Spain DA - 2003-04-06 PY - 2003 AN - OPUS4-4659 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frunza, L. T1 - Molecular dynamics of 4n-octylcyanobiphenyl in partially filled nanoporous SBA molecular sieves T2 - 7. European Conference on Liquid Crystals CY - Jaca, Spain DA - 2003-04-06 PY - 2003 AN - OPUS4-4663 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Micro indentation near stiff-soft phase boundaries T2 - Polydays 2004 CY - Potsdam, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-4703 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Micro indentation near stiff-soft boundaries T2 - "Nanomech5, 5th European Symposium on nano-Mechanical Testing" CY - Hückelhoven, Germany DA - 2004-09-07 PY - 2004 AN - OPUS4-4704 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gildenhaar, Renate T1 - In-vitro surface reaction of plasma sprayed bioceramics T2 - Internationales Symposium "Interface Biology of Implants CY - Rostock, Germany DA - 2003-05-14 PY - 2003 AN - OPUS4-4725 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gildenhaar, Renate T1 - Neue Biokeramiken für den Plasmaspritzprozess T2 - 14. Symposium "Verbundwerkstoffe und Werkstoffverbunde" CY - Vienna, Austria DA - 2003-07-02 PY - 2003 AN - OPUS4-4726 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hemmleb, Matthias T1 - Multispektraltechniken für die Schadensklassifizierung an Bauwerksoberflächen T2 - Feuchtetag 2004 mit Workshop ONSITEFORMASONRY, BAM Berlin CY - Berlin, Germany DA - 2004-11-18 PY - 2004 AN - OPUS4-4729 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gildenhaar, Renate T1 - Neue Biokeramiken für Implantatbeschichtungen T2 - Deutscher Orthopädiekongress 2003 CY - Berlin, Germany DA - 2003-11-13 PY - 2003 AN - OPUS4-4730 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gildenhaar, Renate T1 - In-vitro surface reactions of bioceramic materials T2 - Bioceramics 16; 16th International Symposium on Ceramics in Medicine CY - Oporto, Portugal DA - 2003-11-06 PY - 2003 AN - OPUS4-4731 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Güther, Wolfgang T1 - Sensoren als Mikrosysteme T2 - Messe und Kongress Mikrosystemtechnik mSYS CY - Berlin, Germany DA - 2003-04-28 PY - 2003 AN - OPUS4-4732 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hitzegrad, Frank T1 - Vergleich von adaptierten Methoden zur Charakterisierung von spongiosa-ähnlicher Biokeramik T2 - 14. Symposium "Verbundwerkstoffe und Werkstoffverbunde" CY - Vienna, Austria DA - 2003-07-02 PY - 2003 AN - OPUS4-4733 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hitzegrad, Frank T1 - Hybrid Voigt-Reuss Mixing Rules for Cellular Materials T2 - Euromat 2003 CY - Lausanne, Switzerland DA - 2003-09-01 PY - 2003 AN - OPUS4-4734 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mitropetros, Constantinos T1 - Shock induced bubble explosion in a monodispersed organic liquid T2 - Plasma Physics and Short Time-scale Physics, Deutsche Physikalische Gesellschaft (DPG), Spring Conference CY - Aachen, Germany DA - 2003-03-24 PY - 2003 AN - OPUS4-4686 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mitropetros, Constantinos T1 - Cavitation after shock wave propagation inside a chemically active organic bubby liquid T2 - Plasma Physics and Short Time-scale Physics, Deutsche Physikalische Gesellschaft (DPG), Spring Conference CY - Aachen, Germany DA - 2003-03-24 PY - 2003 AN - OPUS4-4687 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mitropetros, Constantinos T1 - Safety behavior of a chemically active organic bubbly meduim induced by gas explosion above it T2 - European combustion meeting 2003 CY - Orléans, France DA - 2003-10-18 PY - 2003 AN - OPUS4-4688 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knorr, Annett T1 - Anwendung der TRAS 410 für die sicherheitstechnische Bewertung einer Perstersynthese bei Normalbetrieb T2 - DECHEMA/GVC-Jahrestagung 2003 CY - Mannheim, Germany DA - 2003-09-16 PY - 2003 AN - OPUS4-4689 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Razus, D. T1 - Evaluation of Limiting Oxygen Concentration of Fuel/Air/Inert Gaseous Mixtures by means of Calculated Adiabatic Flame Temperatures and Measured Fuel/Air Lower Explosion Limits T2 - ICheaP-6 - The 6th Italian Conference on Chemical and Process Engineering CY - Pisa, Italy DA - 2003-06-08 PY - 2003 AN - OPUS4-4690 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - Plasma-initiated radical gas phase copolymerisation of functional groupscarrying and chain-extending comonomers and the quantitative measuring of retained functional groups at polymeer surfaces using the derivatization technique and XPS T2 - ECASIA `03 CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4675 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Quantitative Measuring of C Radical Sites at Polymer Surfaces using the Derivatization Technique and XPS T2 - ECASIA `03 CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4676 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mach, Reinhard T1 - Thermisch induzierte Morphologieänderung von SiCN-Nanopulvern T2 - GEFTA 2003 Thermische Analyse und Kalorimetrie CY - Augsburg, Germany DA - 2003-09-15 PY - 2003 AN - OPUS4-4677 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pradel, Rita T1 - COMAR-the international database for certified reference materials T2 - IRMM-Workshop Selection and use of reference materials CY - Geel, Belgium DA - 2004-10-12 PY - 2004 AN - OPUS4-4681 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steiger, Thomas T1 - COMAR-The international database for certified reference materials T2 - MiC International Symposium on Metrology in Chemistery CY - Beijing, China DA - 2004-10-19 PY - 2004 AN - OPUS4-4682 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mach, Reinhard T1 - Effects of Heat Treatment on the Structure of Thermal Plasma Synthesized SiCN Composite Nanopowders T2 - Nanomaterials und Nanotechnologies (NN 2003) CY - Crete, Greece DA - 2003-08-30 PY - 2003 AN - OPUS4-4645 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pötsche, P. T1 - Carbon Nanotube Filled Polycarbonate Composites Produced by Melt Mixing and Their Use in Blends with Polyethylene T2 - The 3th Word Congress Nanocomposites CY - San Francisco, CA, USA DA - 2003-11-10 PY - 2003 AN - OPUS4-4646 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pötsche, P. T1 - Komposite aus thermoplastischen Polymeren mit Kohlenstoff-Nanoröhren T2 - TECHNOMER 2003 CY - Chemnitz, Germany DA - 2003-11-13 PY - 2003 AN - OPUS4-4647 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pötsche, P. T1 - Conductive Polymers by Filling Polymer Melts with Carbon Nanotubes T2 - Nanofair 2003 CY - Dresden, Germany DA - 2003-11-20 PY - 2003 AN - OPUS4-4648 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Beziehungen zwischen Zusammensetzung und thermischen Eigenschaften von Alumo-Xerogelen T2 - Jahrestagung der Gesellschaft für thermische Analyse (GEFTA) CY - Braunschweig, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-5620 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sojref, Regine T1 - Submikro- und Nano-Aluminiumoxid - Sinterpeak-Verschiebung durch Variation der Aufbereitung T2 - GEFTA Jahrestagung 2004 CY - Braunschweig, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-5621 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nofz, Marianne T1 - Thermische Zersetzung von Böhmit- und amorphen Alumo-Xerogelen T2 - Jahrestagung der Gesellschaft für thermische Analyse (GEFTA) CY - Braunschweig, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-5633 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dreßler, Martin T1 - Alumina coatings prepared from aqueous sols T2 - JuniorEuroMat CY - Lausanne, Switzerland DA - 2004-09-01 PY - 2004 AN - OPUS4-5634 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mielke, Werner T1 - Thermal Characterization of ULTRANYL within the German Group in the VAMAS Technical Working Party Polymer Blends and Alloys T2 - 9th Annual Meeting of the Polymer Processing Society CY - Manchester, England DA - 1993-04-07 PY - 1993 AN - OPUS4-5775 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mielke, Werner T1 - Einfluss der Isomerie von Phenylengruppen auf Glastemperatur und Schubmodul in fluorierten Poly(oxadiazol-imid-amid)en T2 - Frühjahrstagung der Deutschen Physikalischen Gesellschaft, Fachverband Polymerphysik CY - Halle (Saale), Germany DA - 1994-03-08 PY - 1994 AN - OPUS4-5769 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holland, C. T1 - Dielektrische Analyse der Aushärtung von Phenolharzen T2 - Frühjahrstagung der Deutschen Physikalischen Gesellschaft, Fachverband Polymerphysik CY - Halle (Saale), Germany DA - 1994-03-08 PY - 1994 AN - OPUS4-5772 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bruma, M. T1 - Changes of Permittivity and Modulus by Thermo Treatment of Fluorinated Poly(1,3,4-Oxadiazole-Imide-Amide) T2 - 3rd European Technical Symposium on Polyimides and High Performance Polymers CY - Montpellier, France DA - 1993-06-01 PY - 1993 AN - OPUS4-5773 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Walther, Wolfgang T1 - Massenspektrometrische Schnellbestimmung von Pentachlorphenol (PCP) mit Atmospheric Pressure Ionization (API) T2 - DGMS-Jahrestagung CY - Berlin, Germany DA - 2000-02-27 PY - 2000 AN - OPUS4-5736 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Instruments of Quality Assurance at Ground Water Monitoring T2 - BERM-8 CY - Bethesda, MD, USA DA - 2000-09-17 PY - 2000 AN - OPUS4-5740 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - Bestimmung von Nitroaromaten mittels Micellarer Elektrokinetischer Chromatografie (MEKC) T2 - Analytica Conference 2000 CY - Munich, Germany DA - 2000-04-11 PY - 2000 AN - OPUS4-5741 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - Neue Referenzmaterialien für die organische Analytik als Instrumente der Qualitätssicherung T2 - Tag der Chemie, Wissenschaftspark Golm CY - Potsdam, Germany DA - 2000-11-08 PY - 2000 AN - OPUS4-5725 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scharf, Holger T1 - Soil samples prepared for a proficiency testing scheme operated by BAM T2 - BERM-8 CY - Bethesda, MD, USA DA - 2000-09-17 PY - 2000 AN - OPUS4-5727 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - Entwicklung, Herstellung und Zertifizierung eines Referenzmaterials zur Bestimmung von Organochlorpestiziden in Boden T2 - Analytica Conference 2000 CY - Munich, Germany DA - 2000-04-11 PY - 2000 AN - OPUS4-5729 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - Entwicklung, Herstellung und Zertifizierung eines Referenzmaterials zur Bestimmung von Organochlorpestiziden in Boden T2 - Tag der Chemie, Wissenschaftspark Golm CY - Potsdam, Germany DA - 2000-11-08 PY - 2000 AN - OPUS4-5731 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - Development, Preparation and Certification of a Reference Material for the Determination of Chlorinated Pesticides in Soil T2 - EUROLAB-Symposium CY - Berlin, Germany DA - 2000-05-22 PY - 2000 AN - OPUS4-5734 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mielke, Werner T1 - Tau oder Regen - Einfluss bei der Kurzzeitbewitterung von Lacken T2 - Tagung des Berliner Verbands für Polymerforschung CY - Berlin, Germany DA - 1987-05-21 PY - 1987 AN - OPUS4-5791 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niebergall, Ute T1 - Struktur und Eigenschaften von PE/PP-Blends T2 - Polymerwerkstoffe 94 CY - Merseburg, Germany DA - 1994-09-27 PY - 1994 AN - OPUS4-5763 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Altlastenringversuche der BAM - eine Bilanz T2 - InCom 1999 CY - Düsseldorf, Germany DA - 1999-03-22 PY - 1999 AN - OPUS4-5808 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Charakterisierung und Qualifizierung von Zinkdialkyldithiophosphaten in Motorölen mittels Gaschrotatografie nach Derivatisierung T2 - InCom 1999 CY - Düsseldorf, Germany DA - 1999-03-22 PY - 1999 AN - OPUS4-5810 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Altlastenringversuche der BAM - eine Bilanz IUPAC - ISO/REMCO - BAM - EUROLAB-D T2 - Workshop on proper use of environmental matrix reference materials, BAM CY - Berlin, Germany DA - 1999-04-22 PY - 1999 AN - OPUS4-5811 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - BAM-zertifizierte Referenzmaterialien T2 - InCom 1999 CY - Düsseldorf, Germany DA - 1999-03-22 PY - 1999 AN - OPUS4-5813 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gottschling, Peter T1 - Finite Differenzberechnung der Abgabe von Gasen T2 - 78. Glastechnische Tagung (Kurzreferate) CY - Nuremberg, Germany DA - 2004-06-07 PY - 2004 AN - OPUS4-5968 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich T1 - Reinststoffe für die Kalibrierung - Wie rein sind die Stoffe? T2 - Analytica Conference 2004 CY - Munich, Germany DA - 2004-05-11 PY - 2004 AN - OPUS4-5970 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich T1 - SI-traceable standards oh high metrological quality for chemical measurements T2 - EU conference "Towards an integrated infrastructure for measurements" CY - Warsaw, Poland DA - 2002-06-18 PY - 2002 AN - OPUS4-5971 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich T1 - Rückführungssystem für die Elementanalytik T2 - Analytica Conference 2004 CY - Munich, Germany DA - 2004-05-11 PY - 2004 AN - OPUS4-5972 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sojref, Regine T1 - "Donut like flow pattern" attrition milling of submicron corundum powder T2 - PARTEC 2004 CY - Nuremberg, Germany DA - 2004-04-16 PY - 2004 AN - OPUS4-5964 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marotzke, Christian T1 - Fiber, matrix and interface fracture in composites T2 - Gordon Research Conference on Composites CY - Ventura, CA, USA DA - 2000-01-09 PY - 2000 AN - OPUS4-5948 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marotzke, Christian T1 - Influence of the interface strength on local failure process in fiber reinforced composites T2 - ICCM-12 Conference CY - Paris, France DA - 1999-07-05 PY - 1999 AN - OPUS4-5944 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Sebastian T1 - Rückführbare Ionenanalytik mit Hilfe zertifizierter Referenzmaterialien N2 - Die Norm ISO/IEC 17025, die im Allgemeinen die Grundlage der Laborakkreditierung darstellt, verlangt u.a. auch die Rückführung analytischer Ergebnisse auf SI-Einheiten (SI: Système internationale d'unités). Dazu bieten sich im Prinzip zwei Wege an: 1. Verwendung von Primärnormalen zur Kalibrierung oder von Primärmethoden, 2. Verwendung von zertifizierten Referenzmaterialien. Die Verwendung von zertifizierten Referenzmaterialien (ZRM) setzt voraus, dass diesen ZRM ein (oder mehrere) auf SI rückführbarer zertifizierter Wert (z.B. Massenanteil) mit dazugehöriger Unsicherheit zugewiesen wurde. Ein möglicher Weg, dies zu erreichen, der von BAM und EMPA in Zusammenarbeit mit der Fa. Fluka für Kalibrierstandards (Anionen- und Kationenlösungen, Urtitersubstanzen) beschritten wurde, wird hier beschrieben. Zertifiziert wurden - Kationen-Standardlösungen (1000 mg/L) für Spektrometrie - Anionen-Standardlösungen (1000 mg/kg) für Ionenchromatographie - Urtitersubstanzen (> 99,5 %) für Titrimetrie Die Materialien wurden bei Fluka hergestellt, die Überprüfung der Homogenität der abgefüllten Charge erfolgte bei der EMPA. SI-rückführbare Zertifizierungsanalysen wurden in der EMPA sowie in der BAM mit zwei unterschiedlichen analytischen Methoden durchgeführt. Dabei kamen neben spektrometrischen und chromatographischen Verfahren auch klassische Methoden wie Titrimetrie und in Einzelfällen Gravimetrie zum Einsatz. An ausgewählten Beispielen werden Messverfahren, Berechnung der Messunsicherheit und Rückführung auf SI gezeigt. T2 - CIA-Konferenz CY - Berlin, Germany DA - 2005-04-06 PY - 2005 AN - OPUS4-5544 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Schwefelgehaltbestimmung in Dieselfraktionen mit der TI-MS-IVA T2 - "Tag der Chemie", Universität Potsdam, Institut für Chemie CY - Potsdam, Germany DA - 2004-07-07 PY - 2004 AN - OPUS4-5475 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Martin T1 - Vergleich von Extraktionstechniken zur Bestimmung von Ochratoxin A in Röstkaffee T2 - "Tag der Chemie", Universität Potsdam, Institut für Chemie CY - Potsdam, Germany DA - 2004-07-07 PY - 2004 AN - OPUS4-5476 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liebich, Almuth T1 - Methodenoptimierung zur Bestimmung von Organozinnverbindungen in Sedimenten T2 - "Tag der Chemie", Universität Potsdam, Institut für Chemie CY - Potsdam, Germany DA - 2004-07-07 PY - 2004 AN - OPUS4-5477 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Preparation of reference materials for leachate prognosis T2 - 8th International FZK/TNO Conference on Contaminated Soil (ConSoil 2003) CY - Ghent, Belgium DA - 2003-05-12 PY - 2003 AN - OPUS4-5455 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - Reference materialien for leachate prognosis T2 - 9th International Symposium on Biological and Environmental Reference Materials (BERM9) CY - Berlin, Germany DA - 2003-06-15 PY - 2003 AN - OPUS4-5458 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brenneis, Rudolf T1 - Enzymatic alcoholysis of used fats and oils T2 - Tagung "Enzymes in lipid modification" CY - Greifswald, Germany DA - 2003-03-26 PY - 2003 AN - OPUS4-5462 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brenneis, Rudolf T1 - Herstellung von Esterölen durch enzymatische Alkolyse von (Alt-) Fetten T2 - Messestand der BAM auf der ACHEMA CY - Frankfurt am Main, Germany DA - 2003-05-19 PY - 2003 AN - OPUS4-5463 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Inderchand, M. T1 - Solid State 31P NMR Investigations of Different Calcium Phosphates T2 - DPG Frühjahrstagung CY - Berlin, Germany DA - 2005-03-04 PY - 2005 AN - OPUS4-5506 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohse, Volkmar T1 - Explosion Protection by means of Gas Detectors T2 - ExploRisk - Internationale Fachmesse für Explosionsschutz und Anlagensicherheit CY - Nuremberg, Germany DA - 2004-03-15 PY - 2004 AN - OPUS4-5508 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohse, Volkmar T1 - Gaswarngeräte im Geltungsbereich der Richtlinie 94/9/EG T2 - ExploRisk - Internationale Fachmesse für Explosionsschutz und Anlagensicherheit CY - Nuremberg, Germany DA - 2004-03-15 PY - 2004 AN - OPUS4-5509 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Martin T1 - Bestimmung von Ochratoxin A in Wein nach Reinigung an Anionenaustausch/Reversed Phase-Material mittels LC-MS/MS T2 - 33. Deutscher Lebensmittelchemikertag CY - Bonn, Germany DA - 2004-09-13 PY - 2004 AN - OPUS4-5474 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brenneis, Rudolf T1 - Verfahren zur Altfettalkoholyse T2 - Lange Nacht der Wissenschaften, BAM CY - Berlin, Germany DA - 2003-06-14 PY - 2003 AN - OPUS4-5675 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brenneis, Rudolf T1 - Kühlschmeierstoffe aus Altfetten T2 - Biotechnica, Präsintation am DBU-Messestand CY - Hanover, Germany DA - 2003-10-07 PY - 2003 AN - OPUS4-5676 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schultze, Karin T1 - Analytik von Holzschutzmittelwirkstoffen mit unterschiedlichen massenspektrometrischen Verfahren T2 - 28. Diskussionstagung der AG-MS CY - Tübingen, Germany DA - 1995-06-06 PY - 1995 AN - OPUS4-5655 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - HPLC/MS-Analyse nichtionischer und anionischer Tensidgemische mit Elektrospray-Ionisation T2 - 28. Diskussionstagung der AG-MS CY - Tübingen, Germany DA - 1995-06-06 PY - 1995 AN - OPUS4-5656 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuhnhardt, C T1 - Tensammetrische Untersuchungen an Alkylpolyglucosiden T2 - 2. Vortragstagung "Elektrochemische Analysenmethoden" CY - Clausthal-Zellerfeld, Germany DA - 1995-10-02 PY - 1995 AN - OPUS4-5657 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohse, Heinz T1 - Einfluss von Spurenveruneinigungen auf die Adsorption von Octansäure an der Grenzfläche Quecksilner/Elektrolyt und Wasser/Luft T2 - InCom '96 CY - Düsseldorf, Germany DA - 1996-03-03 PY - 1996 AN - OPUS4-5658 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - Feasibility and limits in preparation of reference materials for the organic emvironmental analysis T2 - EUROENVIRONMENT II CY - Vienna, Austria DA - 1995-10-18 PY - 1995 AN - OPUS4-5659 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lüders, Ch. T1 - Möglichkeiten und Grenzen der Capillarelektrophorese (CE) bei der Analytik von Phenolen T2 - 7. Jenaer Umwelt-Analytik-Tage CY - Jena, Germany DA - 1996-04-02 PY - 1996 AN - OPUS4-5660 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Luther, W. T1 - Ringversuche zur Zertifizierung von Referenzmaterialien T2 - 7. Jenaer Umwelt-Analytik-Tage CY - Jena, Germany DA - 1996-04-02 PY - 1996 AN - OPUS4-5661 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Buge, Hans-Gerhard T1 - Probenpräparation fester natürlicher Materialien zur Herstellung von Referenzmaterialien für die organische Analytik T2 - 7. Jenaer Umwelt-Analytik-Tage CY - Jena, Germany DA - 1996-04-02 PY - 1996 AN - OPUS4-5662 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erhardt, Ulla T1 - Vergleich der Methoden GC-MS-Purge & Trap, GC-ECD-Headspace und TG-MS zur Bestimmung von FCKW in Baustoffen T2 - Umwelttagung 1996, Umwelt und Chemie CY - Ulm, Germany DA - 1996-10-07 PY - 1996 AN - OPUS4-5663 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehnik-Habrink, Petra T1 - Ringversuch zur Bestimmung von PCB in Öl T2 - Analytica Conference '96 CY - Munich, Germany DA - 1996-04-23 PY - 1996 AN - OPUS4-5664 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wachholz, S. T1 - Analysis of siloxane pyrolysis products by cryo-GC/FTIR and GC/MS T2 - 6th Austrian Hungarian International Conference on vibrat. spectroscopy CY - Veszprém, Hungary DA - 1994-04-06 PY - 1994 AN - OPUS4-5641 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wachholz, S. T1 - Determination of functional groups in siloxane products by cryo-GC/FTIR and GC/MS T2 - EUCMOS XXII CY - Essen, Germany DA - 1994-09-11 PY - 1994 AN - OPUS4-5642 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - MS/MS-investigations of wood preservatives and surfactants by electrospray ionisation (ESI) T2 - International Symposium "Chromatography and Mass Spectrometry in Environmental Analysis CY - Saint Petersburg, Russia DA - 1994-10-15 PY - 1994 AN - OPUS4-5643 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - HPLC/MS-Untersuchungen an Holzschutzmittelwirkstoffen mittels "Atmospheric Pressure" - Ionisationstechniken T2 - InCom '95 CY - Düsseldorf, Germany DA - 1995-03-20 PY - 1995 AN - OPUS4-5646 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schultze, Karin T1 - Analytik von Holzschutzmittelwirkstoffen - Prüfkammermessungen mittels Thermodesorption-GC-MS T2 - InCom '95 CY - Düsseldorf, Germany DA - 1995-03-20 PY - 1995 AN - OPUS4-5647 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohse, H. T1 - FIA - Messverfahren und Analysensystem zur Bestimnmung von H2O2 in atmosphärischen Niederschlägen T2 - InCom '95 CY - Düsseldorf, Germany DA - 1995-03-20 PY - 1995 AN - OPUS4-5648 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wachholz, S. T1 - Analyse organischer Bestandteile von Schlacke aus Hausmüllverbrennungsanlagen mittels GC/FTIR, GC/MS und GC/AED T2 - ANAKON '95 CY - Konstanz, Germany DA - 1995-03-15 PY - 1995 AN - OPUS4-5651 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Redlich, C. T1 - Probenvorbereitung für die Bestimmung von Dioxinen und Furanen in Pyrolyseprodukten in Altreifen T2 - ANAKON '95 CY - Konstanz, Germany DA - 1995-03-15 PY - 1995 AN - OPUS4-5652 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erhardt, Ulla T1 - Bestimmung von PAK in Pyrolyseprodukten und Altreifen nach extrographischer Probenvorbereitung mittels GC-MS und GC-FTIR T2 - ANAKON '95 CY - Konstanz, Germany DA - 1995-03-15 PY - 1995 AN - OPUS4-5653 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wachholz, S. T1 - Identification of differently structured siloxanes using cryo-GC/FTIR and GC/MS T2 - 10th International Conferencfe on FTIR Spectroscopy CY - Budapest, Hungary DA - 1995-08-15 PY - 1995 AN - OPUS4-5654 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - Determination of pentachlorphenol (PCP) in wood using various analytical techniques T2 - EUROLAB-Sitzung CY - Berlin, Germany DA - 1996-06-15 PY - 1996 AN - OPUS4-5665 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - Determination of pentachlorphenol (PCP in wood using various analytical techniques T2 - EUROLAB-Sitzung CY - Berlin, Germany DA - 1996-06-15 PY - 1996 AN - OPUS4-5666 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Philipp, Rosemarie T1 - Elektrochemische Messverfahren zur Analyse von Thioharnstoff T2 - Analytica Conference '96 CY - Munich, Germany DA - 1996-04-23 PY - 1996 AN - OPUS4-5667 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - BAM-Ringversuch zur Bestimmung von leichtflüchtigen halogenierten Kohlenwasserstoffen in synthetischen Abwasserproben T2 - Umwelttagung GDCh CY - Ulm, Germany DA - 1996-10-07 PY - 1996 AN - OPUS4-5668 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Buge, Hans-Gerhard T1 - Special features concerning the preparation of wood as a reference material for the determination of select organic wood preservatives T2 - BERM-7 CY - Antwerp, Belgium DA - 1997-04-21 PY - 1997 AN - OPUS4-5670 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - Reference materials for organic environmental analysis T2 - BERM-7 CY - Antwerp, Belgium DA - 1997-04-21 PY - 1997 AN - OPUS4-5671 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lüders, Ch. T1 - Möglichkeiten und Grenzen der Analyltik von Alkylphenolen mit Kapillarelektrophorese und Hochleistungs-Flüssigkeitschromatographie/Massenspektrometrie-Kopplung T2 - InCom '97 CY - Düsseldorf, Germany DA - 1997-03-17 PY - 1997 AN - OPUS4-5672 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Philipp, Rosemarie T1 - Elektrochemische und massenspektrometrische Untersuchungen zum Abbau von Siloxantensiden im Wasser T2 - ELACH 3 CY - Zeuthen, Germany DA - 1997-09-29 PY - 1997 AN - OPUS4-5673 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Ringversuch: Methodenvergleich zur Bestimmung von PAK im Boden T2 - 2. Anwendertreffen über kritische Fluide; Universität Siegen CY - Siegen, Germany DA - 1997-10-08 PY - 1997 AN - OPUS4-5674 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Töpfer, Antje T1 - Acrylamid in Lebensmitteln - Entwicklung eines Referenzmaterials T2 - Konferenz zum 50. Jahrestag des JRC's IRMM CY - Geel, Belgium DA - 2005-03-15 PY - 2005 AN - OPUS4-5871 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Martin T1 - Bestimmung von Ochratoxin A in Wein mittels LC-MS/MS nach kombiniertem Anionenaustauscher/Resersed Phase clean up T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2003-03-15 PY - 2003 AN - OPUS4-5872 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hanebeck, Olaf T1 - Zertifizierte Referenzmaterialien für die Atemalkoholkontrolle T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-5874 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - Stabilitätsuntersuchungen an einem neuen Referenzmaterial: Nitroaromaten in Boden T2 - Analytica Conference 2002 CY - Munich, Germany DA - 2002-04-23 PY - 2002 AN - OPUS4-5846 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - Zertifiziertes Referenzmaterial: BAM-U007 Organochlorpestizide in Boden T2 - Tag der Chemie, TU Berlin CY - Berlin, Germany DA - 2002-12-04 PY - 2002 AN - OPUS4-5847 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - Pentachlorophenol (PCP) in soil - certified reference materials BAM-U008 and BAM-U009 for environmental analysis T2 - Analytica Conference 2002 CY - Munich, Germany DA - 2002-04-23 PY - 2002 AN - OPUS4-5854 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - Einsatz der Kapillarelektrophorese für die Zertifizierung eines Referenzmaterials "Pentachlorphenol in Boden" T2 - 1. Conference über Ionen-Analyse (CIA) CY - Berlin, Germany DA - 2001-02-21 PY - 2001 AN - OPUS4-5825 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schultze, Karin T1 - Zertifiziertes Refenzmaterial "BAM-U007" - Organochlorpestizide in Boden T2 - ANAKON 2001 CY - Konstanz, Germany DA - 2001-04-04 PY - 2001 AN - OPUS4-5826 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Retter, Utz T1 - Comparative impedance spectroscopic measurements of nickel hexacyanoferrate composite electrodes and nickel hcf microparticels on solid PIGE's in different electrolyte solutions T2 - ELACH 5 CY - Freiburg, Germany DA - 2001-09-30 PY - 2001 AN - OPUS4-5827 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bremser, Wolfram T1 - Sampling of solid reference materials: sample size inhomogeneity T2 - Workshop CY - Lisbon, Portugal DA - 2001-11-05 PY - 2001 AN - OPUS4-5828 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Instruments of qualitiy assurance at ground water monitoring T2 - "Tag der Chemie", FU Berlin CY - Berlin, Germany DA - 2001-11-07 PY - 2001 AN - OPUS4-5829 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - Zertifiziertes Referenzmaterial "BAM-U007" - Organochlorpestizide in Boden T2 - "Tag der Chemie", FU Berlin CY - Berlin, Germany DA - 2001-11-07 PY - 2001 AN - OPUS4-5831 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Retter, Utz T1 - Über die Bildung von Grenzflächenmizellen bei der Adsorption von Decanol an der Grenzfläche Quecksilber/ Elektrolyt N2 - Gleiche Tagung fand am 04.12.2002 am "Tag der Chemie" der TU Berlin statt. T2 - 6. Nachwuchstagung der Kolloid- und Grenzflächenforschung; Technische Universität CY - Berlin, Germany DA - 2002-03-21 PY - 2002 AN - OPUS4-5855 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Martin T1 - Untersuchung zur Herstellung Ochratoxin A belasteter Referenzmaterialien T2 - InCom CY - Düsseldorf, Germany DA - 2003-03-25 PY - 2003 AN - OPUS4-5857 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - International co-operation in the development and application of matrix reference materials T2 - Case study: PAH and TPH in soil; BERM-9 CY - Berlin, Germany DA - 2003-06-17 PY - 2003 AN - OPUS4-5858 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Pentachlorophenol (PCP) in soil - certified reference materials "BAM-U008" and "BAM-U009" for environmental analysis T2 - BERM 9 - 9th International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 2003-06-15 PY - 2003 AN - OPUS4-5859 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liebich, Almuth T1 - Bestimmung von Organozinnverbindungen in Sedimenten T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-5875 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Georg T1 - Preparation and Characterization of New Self-setting Calcium Phosphate Cements Based on Alkali Containing Orthophophates T2 - 17th Annual Meeting of the international Society for Ceramics in Medicine CY - New Orleans, LA, USA DA - 2004-12-08 PY - 2004 AN - OPUS4-5877 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ploska, Ute T1 - Resorbable biomaterials based on calcium phosphates: Determination of in vitro solubility applying the EN ISO 10993-14 (first experiences) T2 - 17th Annual Meeting of the International Society for Ceramics in Medicine CY - New Orleans, LA, USA DA - 2004-12-08 PY - 2004 AN - OPUS4-5880 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - BAM CRM - Tools for quality assurance in envirinmental analysis T2 - 37th IUPAC Congress CY - Berlin, Germany DA - 1999-08-14 PY - 1999 AN - OPUS4-5815 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wachholz, Sigrid T1 - BAM CRM - Instrumente der Qualitätssicherung T2 - ANAKON 1999 CY - Konstanz, Germany DA - 1999-04-08 PY - 1999 AN - OPUS4-5816 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - BAM-Ringversuche zur Altlastenanalytik T2 - Analytica Conference 1998 CY - Munich, Germany DA - 1998-04-21 PY - 1998 AN - OPUS4-5817 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lüders, Christian T1 - Möglichkeiten und Grenzen der Analytik von Alkylphenolen mit Hochleistungsflüssigchromatogarfie/Massenspektrometrie-Kopplung T2 - 31. Diskussionstagung der Arbeitsgemeinschaft CY - Cottbus, Germany DA - 1998-03-09 PY - 1998 AN - OPUS4-5818 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Segebade, Christian T1 - Application of nuclide-excited EDXRS in the recycling progress of photovoltaic CdTe-modules T2 - European Conference on X-Ray Spectrometry (EXRS 2004) CY - Alghero, Italy DA - 2004-06-06 PY - 2004 AN - OPUS4-6001 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - K-edge soft x-ray absorption (NEXAFS) spectroscopy in surface chemical analysis of polymers T2 - Deutsche Bunsengesellschaft für Physikalische Chemie, Int. Discussion Meeting "Advanced Methods of Polymer Characterization: New Developments and Application in Industry" CY - Mainz, Germany DA - 1999-03-15 PY - 1999 AN - OPUS4-6075 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koprinarov, Ivaylo T1 - Chromium-evaporated Polymers and Organic Films Investigated by X-ray Absorption Spectroscopy (XAS) and X-ray Photoelectron Spectroscopy (XPS) T2 - IPCM´99: 6th conference on interfacial phenomena in composite materials CY - Berlin, Germany DA - 1999-09-08 PY - 1999 AN - OPUS4-6076 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Procop, Mathias T1 - RDXTOOLS - Computer Programmes for the Determination of Critical EDX System Parameters T2 - EMAS´99, 6th Workshop of the European Microanalysis Society CY - Konstanz, Germany DA - 1999-05-03 PY - 1999 AN - OPUS4-6077 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - K-edge soft x-ray absorption (NEXAFS) spectroscopy in surface chemical analysis of polymers T2 - European Research Conferences Fundamental Aspects of Surface Science: Structure and Dynamics of Organic and Biological Molecules at Interfaces CY - Castelvecchio Pascoli, Italy DA - 1999-09-03 PY - 1999 AN - OPUS4-6078 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - K-edge soft x-ray absorption (NEXAFS) spectroscopy in surface chemical analysis of polymers T2 - ECASIA´99 CY - Seville, Spain DA - 1999-10-04 PY - 1999 AN - OPUS4-6079 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schroeder, S. T1 - Röntgenabsorptionsspektroskopie an heterogenen Katalysatoren: Entwicklung einer neuen in-situ-Zelle T2 - BESSY-Nutzertreffen 1998 CY - Berlin, Germany DA - 1998-12-03 PY - 1998 AN - OPUS4-6067 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schroeder, S. L. M. T1 - Gas-flow cell for in-situ studies of materials under reaction conditions by total electron-yield XAS T2 - HASYLAB user meeting 1998 CY - Hamburg, Germany DA - 1999-01-29 PY - 1999 AN - OPUS4-6068 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schroeder, S. L. M. T1 - In-situ studies of chromia- and gold/titania-catalysts by total electron-yield XAS T2 - HASYLAB user meeting 1998 CY - Hamburg, Germany DA - 1999-01-29 PY - 1999 AN - OPUS4-6069 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böse, Olaf T1 - Cr K-edge XANES investigations of fluorinated chromium oxide catalysts for the hydrofluorination of 1-Chloro-2,2,2-trifluoroethane T2 - HASYLAB user meeting 1998 CY - Hamburg, Germany DA - 1999-01-29 PY - 1999 AN - OPUS4-6071 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Güttler, B. T1 - Physical and Chemical Characterization of thermal and native Siliconoxide layers on Silicon T2 - Symposium "Reference Materials for Technologies in the New Millenium" CY - Berlin, Germany DA - 2000-05-22 PY - 2000 AN - OPUS4-6136 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gross, Thomas T1 - Verfahren zur Bestimmung des Gehaltes and organischen Siliziumverbindungen auf der Oberfläche von Elastomerformteilen T2 - 11. Arbeitstagung Angewandte Oberflächenanalytik AOFA11 CY - Leipzig, Germany DA - 2000-09-24 PY - 2000 AN - OPUS4-6139 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scholze, F. T1 - Response function of energy dispersive semiconductor X-ray detectors - a physical model T2 - European Conference on Energy Dispersive X-Ray Spectrometry, EDXRS-2000 CY - Kraków, Poland DA - 2000-06-18 PY - 2000 AN - OPUS4-6141 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Griepentrog, Michael T1 - PVD-Reference Layers for quantitative Analysis of N and C in steel and coatings by using electron and optical emission spectroscopy T2 - PSE 2000 CY - Garmisch-Partenkirchen, Germany DA - 2000-09-17 PY - 2000 AN - OPUS4-6142 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Reference Coatings for GD-OES Depth Profiling - Results of a VAMAS Project T2 - PSE 2000 CY - Garmisch-Partenkirchen, Germany DA - 2000-09-17 PY - 2000 AN - OPUS4-6143 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gross, Thomas T1 - TIME-OF-FLIGHT SIMS AND XPS CHARACTERIZATION OF METAL DOPED POLYMERS T2 - 13th International Conference on Secondary Ion Mass Spectrometry and Related Topics CY - Nara, Japan DA - 2001-11-11 PY - 2001 AN - OPUS4-6149 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Bestimmung der Interface-Festigkeit in carbonfaserverstärkten Werkstoffen T2 - Verbundwerkstoffe und Werkstoffverbunde CY - Kassel, Germany DA - 06.04.2005 PY - 2005 AN - OPUS4-6085 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koprinarov, Ivaylo T1 - Chromium-evaporated Polymers and Organic Films Investigated by X-ray Absorption Spectroscopy (XAS) and X-ray Photoelectron Spectroscopy (XPS) T2 - BESSY Nutzertreffen CY - Berlin, Germany DA - 1999-12-09 PY - 1999 AN - OPUS4-6131 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - K-edge soft x-ray absorption (NEXAFS) spectroscopy in surface chemical analysis of polymers T2 - BESSY Nutzertreffen CY - Berlin, Germany DA - 1999-12-09 PY - 1999 AN - OPUS4-6133 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - Qualitätssicherung in der Nanotechnologie T2 - Materialica CY - Munich, Germany DA - 2002-09-30 PY - 2002 AN - OPUS4-6185 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köpp, Christian T1 - ONSITEFORMASONRY - Ein Europäisches Projekt, Entwicklung zerstörungsfreier und zerstörungsarmer Prüfverfahren zur Untersuchung und Bewertung historischen Mauerwerks T2 - Feuchtetag 2004 mit Workshop ONSITEFORMASONRY CY - Berlin, Germany DA - 2004-11-18 PY - 2004 AN - OPUS4-6179 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - Qualitätssicherung in der Nanoanalytik T2 - VDI Nanoworld auf der Hannovermesse CY - Hanover, Germany DA - 2002-04-15 PY - 2002 AN - OPUS4-6180 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hasche, K. T1 - About calibration of thickness standards on nanometre scale T2 - 3rd euspen International Conference CY - Eindhoven, Netherlands DA - 2002-05-26 PY - 2002 AN - OPUS4-6183 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hasche, K. T1 - Thin Film Reference Materials for Thickness Measurement by XRF and GIXR in the Nanometre Range T2 - European Conference on Energyx Dispersive X-Ray Spectrometry EDXRS2002 CY - Berlin, Germany DA - 2002-06-16 PY - 2002 AN - OPUS4-6184 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weise, Frank T1 - Anwendungsmöglichkeiten der auf X-Ray basierenden 3D-CT zur Schadensanalyse in Betonen T2 - Gemeinsame Veranstaltung der BASt und des BMVBW CY - Bergisch Gladbach, Germany DA - 2004-12-08 PY - 2004 AN - OPUS4-6219 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mehner, Hartmut T1 - Mössbauer Studies of noble metal catalysts promoted by tin T2 - ICAME'97 Conference CY - Rio de Janeiro, Brazil DA - 1997-09-14 PY - 1997 AN - OPUS4-6225 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weber, K. T1 - Characterization of microstructure of high-Cr cast irons using Mössbauer spectroscopy T2 - ICAME `99 Conference CY - Garmisch-Partenkirchen, Germany DA - 1999-08-29 PY - 1999 AN - OPUS4-6230 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maltsev, Yuri T1 - Movable resonance scintillation detector T2 - ICAME `99 Conference CY - Garmisch-Partenkirchen, Germany DA - 1999-08-29 PY - 1999 AN - OPUS4-6231 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maltsev, Yuri T1 - Baseline correction in transmission Mössbauer spectroscopy using resonance detectors T2 - ICAME 2001 Conference CY - Oxford, England DA - 2001-09-02 PY - 2001 AN - OPUS4-6232 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, F. T1 - Selective reduction of NO by hydrocarbons with Fe zeolites: Relations between the structure of active Fe sites and catalytic activity T2 - 3rd International Conference on Environmental Catalysis CY - Tokyo, Japan DA - 2001-12-10 PY - 2001 AN - OPUS4-6233 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Menzel, Michael T1 - Investigation of iron species in zeolite catalysts by Mössbauer spectroscopy T2 - 5th Seeheim Workshop on Mössbauer Spectroscopy CY - Seeheim-Jugenheim, Germany DA - 2002-05-21 PY - 2002 AN - OPUS4-6234 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Sicherheit bei der Produktion von Lebensmitteln: Eigenschaftsanalyse von sterilen Oberflächen T2 - 63. FEI-Diskussionstagung 2005 CY - Berlin, Germany DA - 2005-09-13 PY - 2005 AN - OPUS4-6286 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Charakterisierung von Oberflächen für die Steriltechnik T2 - 63. FEI-Diskussionstagung 2005 CY - Berlin, Germany DA - 2005-09-13 PY - 2005 AN - OPUS4-6287 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Segebade, Christian T1 - Instrumental study of uranium behaviour in permeable reactive barriers T2 - 11th International Conference on Modern Trends in Activation Analysis; University of Surrey CY - Guildford, England DA - 2004-06-20 PY - 2004 AN - OPUS4-6266 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Swaraj, Sufal T1 - Study of effects of plasma parameters by characterization of pulse plasma deposited organic films T2 - 22nd BESSY Users' Meeting CY - Berlin, Germany DA - 2003-12-04 PY - 2003 AN - OPUS4-6445 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - A new type of certified reference material for length calibration and testing of lateral resolution in the nanometre range T2 - 3rd International Symposium on Practical Surface Analysis and 5th Korea-Japan International Symposium on Surface Analysis (PSA-04) CY - Jeju, South Korea DA - 2004-09-26 PY - 2004 AN - OPUS4-6446 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Pulsed Plasma-polymerized Films Prepared from Organic Molecules: Characterization by X-ray Absorption Spectroscopy, Photoelectron Spectroscopy and Time of Flight Static Secondary Ion Mass Spectrometry T2 - 3rd International Symposium on Practical Surface Analysis and 5th Korea-Japan International Symposium on Surface Analysis (PSA-04) CY - Jeju, South Korea DA - 2004-09-26 PY - 2004 AN - OPUS4-6447 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Swaraj, Sufal T1 - X-ray Absorption and Photoelectron Spectroscopy on Plasma-polymerized Films Prepared from Organic Molecules (Ethylene, Allyl alcohol, Styrene) T2 - 9th Conference on Plasma Surface Engineering CY - Garmisch-Partenkirchen, Germany DA - 2004-09-13 PY - 2004 AN - OPUS4-6449 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Zur praxisorientierten Berechnung der Steifigkeit und Dämpfung von Fundamenten und Fahrwegen T2 - D-A-CH-Tagung "Erdbebenwesen und Baudynamik" Universität Innsbruck CY - Innsbruck, Austria DA - 2001-09-19 PY - 2001 AN - OPUS4-6607 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Prospecting soft deposits by the analysis of the wave propagation in theory and experiment T2 - 3rd Int. Symposium on "Geotechnics Related to the European Environment" CY - Berlin, Germany DA - 2000-06-21 PY - 2000 AN - OPUS4-6610 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Vergleichsrechnungen zur Dynamik des Eisenbahngleises: Amplitudenverteilung und Untergrundeinfluss T2 - Zusammenkunft zum DFG Schwerpunktprogramm Systemdynamik und Langzeitverhalten von Fahrwerk, Gleis und Untergrund, AG Numerik, TU Berlin CY - Berlin, Germany DA - 2001-12-10 PY - 2001 AN - OPUS4-6613 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Gassensorik I - Prüfen und Kalibrieren von Gassensoren T2 - Sensor´97 CY - Nuremberg, Germany DA - 1997-05-13 PY - 1997 AN - OPUS4-6595 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mosel, Günter T1 - Röntgenabsorptionsspektroskopie als elementspezifische Methode zur Untersuchung von Strukturbildungsprozessen im Bereich der atomaren Nahordnung keramischer Werkstoffe T2 - Workshop "Funktionale Supramolekulare Systeme - Von der Synthese zur Anwendung", DECHEMA e. V. CY - Frankfurt am Main, Germany DA - 1997-05-13 PY - 1997 AN - OPUS4-6597 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behrendt, Bodo T1 - Zerstörungsfreie Materialprüfung an Flachglas mit Ultraschall T2 - 71. Glastechnische Tagung CY - Bayreuth, Germany DA - 1997-05-26 PY - 1997 AN - OPUS4-6601 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Kalibrierung von Spurenfeuchtemessgeräten T2 - Sensor´99 - Internationaler Kongress und Messe CY - Nuremberg, Germany DA - 1999-05-18 PY - 1999 AN - OPUS4-6579 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Kalibrierung von Sensoren zur Alkohol-Detektion T2 - Sensor´99 - Internationaler Kongress und Messe CY - Nuremberg, Germany DA - 1999-05-18 PY - 1999 AN - OPUS4-6581 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mosel, Günter T1 - Local order in ZnO-B2O3-V2O5 glasses obtained from pe-peak analysis of V-K EXAFS spectrum T2 - HASYLAB-Nutzertreffen CY - Hamburg, Germany DA - 1999-01-30 PY - 1999 AN - OPUS4-6584 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mosel, Günter T1 - Temperature-dependent XAFS studies on Fe-containing silicate glasses and SrTiO3 ceramics T2 - HASYLAB-Nutzertreffen CY - Hamburg, Germany DA - 1998-01-30 PY - 1998 AN - OPUS4-6588 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Gassensorik II - Prüfen und Kalibrieren von Feuchtesensoren T2 - Sensor´97 CY - Nuremberg, Germany DA - 1997-05-13 PY - 1997 AN - OPUS4-6594 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Thermal Degradation of Chromium Nitride Thin Films Investigated by DTA T2 - 8th International Conference On Plasma Surface Engineering (PSE) CY - Garmisch-Partenkirchen, Germany DA - 2002-09-09 PY - 2002 AN - OPUS4-6558 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sebastian, S. T1 - Charakterisierung des mechanischen Spannungszustandes glasig-kristalliner Sensormaterialien mittels ESR-Spektroskopie T2 - 3. Jahrestagung der Deutschen Gesellschaft für Kristallographie CY - Darmstadt, Germany DA - 1995-03-06 PY - 1995 AN - OPUS4-6543 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Keramische Sensoren T2 - Sensor´95 - 7. Fachmesse mit Kongress CY - Nuremberg, Germany DA - 1995-05-09 PY - 1995 AN - OPUS4-6544 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Einwiller, B. T1 - Wear protection by layers with nanoparticles T2 - Materials Week - International Congress on Advanced Materials, their Processing and Applications CY - Munich, Germany DA - 2000-09-25 PY - 2000 AN - OPUS4-6572 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Thermal stability of TiN thin films investigated by DTA T2 - 7th International Conference On Plasma Surface Engineering CY - Garmisch-Partenkirchen, Germany DA - 2000-09-17 PY - 2000 AN - OPUS4-6574 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Schottergleis und Feste Fahrbahn-Wirkung auf den Zug (Fahrgast) und die Umgebung (Anwohner) T2 - Hannovermesse CY - Hanover, Germany DA - 2002-04-15 PY - 2002 AN - OPUS4-6619 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Practical Applications of Electronic Noses T2 - SENSOR 2005 Kongress CY - Nuremberg, Germany DA - 2005-05-10 PY - 2005 AN - OPUS4-7060 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mach, Reinhard A1 - Maneck, Heinz-Eberhard T1 - Modification of graphite particles in the RF induction plasma T2 - 12. Bundesdeutsche Fachtagung Plasmatechnologie CY - Braunschweig, Germany DA - 2005-03-21 PY - 2005 AN - OPUS4-7326 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mach, Reinhard T1 - Synthese von SiCN-Komposit-, SiC- und Si3N4-Nanopulvern im RF-Induktionsplasma T2 - 12. Bundesdeutsche Fachtagung Plasmatechnologie CY - Braunschweig, Germany DA - 2005-03-21 PY - 2005 AN - OPUS4-7268 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - NMR studies of the structure of precipitated calcium phosphates and carbonates and of mineral protein interactions T2 - DFG-Antragskolloquium des Schwerpunktprogramms "Biomineralisation" CY - Bonn, Germany DA - 2005-02-21 PY - 2005 AN - OPUS4-7269 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - Übersichtsposter über Expertise und Angebot der AG "NMR-Spektroskopie" zur Leitinitiative "NanoforLife" T2 - Auftaktveranstaltung zur Leitinnovation "NanoforLife" CY - Düsseldorf, Germany DA - 2005-01-26 PY - 2005 AN - OPUS4-7271 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas T1 - Teilmechanisiertes Handprüfsystem für Radsatzwellen mit Längsbohrung auf Basis der Gruppenstrahlertechnik T2 - DGZfP-Jahrestagung CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-7318 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas T1 - UT1-M2-Ausbildung für die mechaniesierte Ultraschallprüfung T2 - DGZfP-Jahrestagung CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-7319 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Contribution of Plasma-introduced Functional Groups at Polymer Surfaces to the Adhesion of Metals T2 - 12. Bundesdeutsche Fachtagung Plasmatechnologie CY - Braunschweig, Germany DA - 2005-03-21 PY - 2005 AN - OPUS4-7325 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mc Hugh, Jarlath T1 - Industrieller Einsatz von Ultraschall zur Prozessüberwachung von vernetzenden Systemen T2 - 3. International Thermoset Conference CY - Iserlohn, Germany DA - 2005-04-21 PY - 2005 AN - OPUS4-7309 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pradel, Rita T1 - COMAR- the international database for certified reference materials N2 - im Tagungsband im Internet: http://www.incom-symposium.de/InCom2005/Inhalt/send_Tagungsband) T2 - InCom 2005 CY - Düsseldorf, Germany DA - 2005-03-29 PY - 2005 AN - OPUS4-7312 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steiger, Thomas T1 - Update on COMAR - the international database for certified reference materials N2 - im Tagungsband ANACON 2005, Seite 189 T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-7313 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertel, Horst T1 - Kontrolle der Termite Reticulitermes flavipes (Kollar) in Hamburg T2 - Tagung der Deutschen Gesellschaft für allgemeine und angewandte Entomologie (DGaaE) CY - Dresden, Germany DA - 2005-03-21 PY - 2005 AN - OPUS4-7341 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mach, Reinhard T1 - Annealing of plasma synthesized SiCN composite nanopowders T2 - 12. Bundesdeutsche Fachtagung Plasmatechnologie CY - Braunschweig, Germany DA - 2005-03-21 PY - 2005 AN - OPUS4-7290 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Chemi- und Thermolumineszenzuntersuchungen zur Stabilität von elektrolumineszierenden Funktionspolymeren T2 - Jahrestagung der Deutschen Physikalischen Gesellschaft 1997 CY - Münster, Germany DA - 1997-03-17 PY - 1997 AN - OPUS4-7257 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Investigation of the stability of poly(phenyl-1,4-phenylenevinylene), P-PPV in different polymeric matrices by chemiluminescence T2 - 5th International Conference on Methods and Applications of Fluorescence Spectroscopy CY - Kleinmachnow, Germany DA - 1997-09-21 PY - 1997 AN - OPUS4-7258 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Chemilumineszenz-Untersuchungen zur Stabilität von elektro-optischen Funktionspolymeren T2 - Jahrestagung der Gesellschaft Deutscher Chemiker 1998 CY - Mainz, Germany DA - 1998-03-23 PY - 1998 AN - OPUS4-7259 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Chemi- und Thermolumineszenz-Untersuchungen zur Stabilität von Poly(phenyl-p-phenylenvinylen), P-PPV T2 - Jahrestagung des Berliner Verbands für Polymerforschung e. V. CY - Berlin, Germany DA - 1998-05-14 PY - 1998 AN - OPUS4-7260 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Investigation of Stability of Poly(phenyl-1,4-phenylenevinylene) by Thermo- and Chemiluminescence T2 - Excited States, Photochemistry, and Application CY - Noordwijk, Netherlands DA - 1998-06-16 PY - 1998 AN - OPUS4-7261 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Untersuchungen des Degradationsprozesses von Polyolefinen bei verschiedenen Recyclingmethoden durch Chemilumineszenz und IR-Spektroskopie T2 - Umwelttagung der Gesellschaft Deutscher Chemiker 1998 CY - Karlsruhe, Germany DA - 1998-09-27 PY - 1998 AN - OPUS4-7262 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Peplinski, Burkhard T1 - X-ray powder diffraction investigation of the metastable phase Sr2Ti5O12 occuring in high-tech glass ceramics T2 - 4th European Powder Diffraction Conference (EPDIC-4) CY - Chester, England DA - 1995-07-10 PY - 1995 AN - OPUS4-6547 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Dotierte Strontiumtitanat-Keramiken nach dem Gelcasting Verfahren T2 - DKG Jahrestagung CY - Aachen, Germany DA - 1995-10-08 PY - 1995 AN - OPUS4-6548 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mosel, Günter T1 - The local environment of zinc and vanadium ions in zinc vanadate glasses investigated by EXAFS spectroscopy T2 - HASYLAB-Nutzertreffen CY - Hamburg, Germany DA - 1996-01-26 PY - 1996 AN - OPUS4-6552 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Grundwasserscreening mit Elektronischen Nasen T2 - 19. Internationale Fachmesse und Analytica Conference 2004 CY - Munich, Germany DA - 2004-05-11 PY - 2004 AN - OPUS4-6554 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Thermische Zersetzung von Sr2Ti5O12 T2 - 8. GDCh-Vortragstagung "Phasenumwandlungen in Festkörpern" CY - Darmstadt, Germany DA - 1996-03-20 PY - 1996 AN - OPUS4-6676 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Svoboda, S. T1 - Sol-Gel-Schutzschichten T2 - Tag der Forschung CY - Schmalkalden, Germany DA - 1996-10-05 PY - 1996 AN - OPUS4-6681 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mosel, Günter T1 - EXAFS study of vanadium ions in glasses of the system ZnO-B2O3-V2O5 investigated by V-K EXAFS spectroscopy T2 - HASYLAB-Nutzertreffen CY - Hamburg, Germany DA - 1997-01-31 PY - 1997 AN - OPUS4-6695 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Intelligentes Meßsystem für keramische Sensoren T2 - Werkstoffwoche '96 CY - Stuttgart, Germany DA - 1996-05-28 PY - 1996 AN - OPUS4-6693 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Griepentrog, Michael T1 - Fibroblast growth on PVD coated surfaces T2 - 9th International Conference on Plasma Surface Engineering (PSE 2004) CY - Garmisch-Partenkirchen, Germany DA - 2004-09-13 PY - 2004 AN - OPUS4-6839 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Österle, Werner T1 - Tribologische und biologische Bewertung neuer Verschleißschutzschichten für Metall-Keramik-Paarungen bei Endoprothesen T2 - Jahrestagung der Deutschen Gesellschaft für Biomaterialien (DGBM) 2004 CY - Berlin, Germany DA - 2004-10-07 PY - 2004 AN - OPUS4-6840 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quercetti, Thomas T1 - Importance of Strain And Acceleration Measurements During Drop Tests For Safety Analysis And Package Design Optimization T2 - 14th International Symposium on the Packaging and Transportation of Radioactive Materials CY - Berlin, Germany DA - 2004-09-20 PY - 2004 AN - OPUS4-6833 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merchel, Silke T1 - Bestimmung leichter Elemente mit Photonenaktivierungsanalyse (PAA) T2 - 20. Seminar Aktivierungsanalyse (PAA); Technische Universität CY - Garching, Germany DA - 2005-02-24 PY - 2005 AN - OPUS4-7165 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Levkovitch, Vladislav T1 - On the influence of deformation incompatibility on the development of glide and kink bands at the crack tip and on crack opening in single crystals T2 - 13th International Workshop on Computational Mechanics of Materials (IWCMM 13); Otto-von-Guericke-University CY - Magdeburg, Germany DA - 2003-09-22 PY - 2003 AN - OPUS4-7128 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Determination of a working range for the laser cleaning of soiled silk T2 - Konferenz LACONA VI, Lasers in the Conservation of Artworks CY - Vienna, Austria DA - 2005-09-21 PY - 2005 AN - OPUS4-7135 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jann, Oliver T1 - Testing Emissions of Volatile Organic Compounds from Products and Materials T2 - International Congress-ENERIS CY - Paris, France DA - 2001-06-14 PY - 2001 AN - OPUS4-7199 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goebbels, Jürgen T1 - Flaw Types in Metallic Samples Analysed with Computed Tomographie T2 - Symposium "Tomographic Methods in Materials Resarch"; Frühjahrstagung der Deutschen Physikalischen Gesellschaft; Technische Universität CY - Berlin, Germany DA - 2005-03-04 PY - 2005 AN - OPUS4-7180 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinholz, Uwe T1 - Farbrekonstreuktion eines altägyptischen Tempelreliefs T2 - IGAS Jahreskolloqium, Adlershof CY - Berlin, Germany DA - 2004-11-17 PY - 2004 AN - OPUS4-7181 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinholz, Uwe T1 - Farbrekonstreuktion eines altägyptischen Tempelreliefs T2 - Jahrestagung "Archäometrie und Denkmalpflege 2004" CY - Mannheim, Germany DA - 2004-10-06 PY - 2004 AN - OPUS4-7182 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weise, Hans-Peter T1 - Mewar Rajput Pigments- An External Beam PIXE Study T2 - 10th International Conference in Pixe and its Analytical Applications CY - Ljubljana, Slovenia DA - 2004-06-04 PY - 2004 AN - OPUS4-7183 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reese, Daniel T1 - Validation of a procedure for estimating tensile properties from the instrumented indentation test T2 - 69. Jahrestagung der Deutschen Physikalischen Gesellschaft, Humboldt Universität und Technische Universität CY - Berlin, Germany DA - 2005-03-04 PY - 2005 N1 - Geburtsname von Reese, Daniel: Klötzer, D. - Birth name of Reese, Daniel: Klötzer, D. AN - OPUS4-7227 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten T1 - Arbeitsschwerpunkte im ZEMI (Zentrum für Mikrosystemtechnik Berlin) T2 - Mikrosystems Technology, Messe und Kongress CY - Berlin, Germany DA - 2005-03-07 PY - 2005 AN - OPUS4-7175 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - NMR characterization of nanocrystalline hydroxyapatite and of the mineral-protein interface in bone T2 - 46th ENC CY - Providence, RI, USA DA - 2005-04-11 PY - 2005 AN - OPUS4-7373 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - NMR characterization of nanocrystalline hydroxyapatite and of the mineral-protein interface in bone T2 - Workshop "Biomineralization"; University of Cambridge CY - Cambridge, England DA - 2005-04-18 PY - 2005 AN - OPUS4-7374 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Sebastian T1 - Rückführbare Ionenanalytik mit Hilfe zertifizierter Referenzmaterialien T2 - Tag der Chemie, Freie Universität Berlin CY - Berlin, Germany DA - 2005-06-08 PY - 2005 AN - OPUS4-7425 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schubert, R. T1 - Hexadentate bispidine ligands with pyridine and imidazole groups T2 - 2nd SUPRAPHONE Meeting (Supramolecular photonics network in Europe) CY - Dresden, Germany DA - 2005-05-05 PY - 2005 AN - OPUS4-7397 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malz, Frank T1 - Puritiy assessments of phytopharmaceuticals by qNMR T2 - 46th ENC, Rhode Island Convention Center CY - Providence, RI, USA DA - 2005-04-10 PY - 2005 AN - OPUS4-7398 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fichera, Mario Augusto T1 - Solid state NMR investigations of flame retardant HIPS system based on Mg(OH)2 with red phosphorus T2 - FRPM '05 in der BAM, BAM CY - Berlin, Germany DA - 2005-09-07 PY - 2005 AN - OPUS4-7399 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Urech, L. T1 - Removal of doped Poly(methylmetacrylate) from tungsten and titanium substrates by femto- and nanosecond laser cleaning T2 - E-MRS 2005 Spring Meeting, SYMPOSIUM J, Advances in Laser and Lamp Processing of Functional Materials CY - Strasbourg, France DA - 2005-05-31 PY - 2005 AN - OPUS4-7404 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tscharntke, Dirk A1 - Tessaro, Ute T1 - Ultraschalluntersuchungen mit SAFT an Dampferzeuger-Speisewasserstutzen T2 - DGZfP-Jahrestagung CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-7405 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liebich, Almuth T1 - Bestimmung von Organzinnverbindungen in Sedimenten T2 - Tag der Chemie 2005, Freie Universität Berlin CY - Berlin, Germany DA - 2005-06-08 PY - 2005 AN - OPUS4-7516 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Bestimmung der ausblasbaren Schwefelkomponenten (POS) in belastetem Grundwasser T2 - Tag der Chemie 2005, Freie Universität Berlin CY - Berlin, Germany DA - 2005-06-08 PY - 2005 AN - OPUS4-7517 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - Analyse von Azofarbstoffen mittels Kapillarelektrophorese (CE) und Flüssigchromatographie (HPLC) T2 - CIA 2005 (Conference Ion Analysis), Hotel Berlin CY - Berlin, Germany DA - 2005-04-06 PY - 2005 AN - OPUS4-7518 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Trappe, Volker T1 - Description of the Micro Cracking of CFRP under Matrix Dominated Fatigue Loading T2 - Polydays 2002, TU Berlin CY - Berlin, Germany DA - 2002-09-30 PY - 2002 AN - OPUS4-7486 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schiller, E. T1 - Hydrophile Rhenium- und Technetiumkomplexe zur Kopplung an Biomoleküle T2 - GDCh-Jahrestagung Chemie 2003 CY - Munich, Germany DA - 2003-10-07 PY - 2003 AN - OPUS4-7494 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Juran, S. T1 - Synthese und Komplexbildungseigenschaften neuer sechszähniger Bispidinderivate mit Pyridin- und Imidazolgruppen T2 - GDCh-Jahrestagung CY - Düsseldorf, Germany DA - 2005-09-11 PY - 2005 AN - OPUS4-7472 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reck, Günter T1 - Uric Acid Monohydrate a Nev Urinary Calculus Phase T2 - Tag der Chemie, Freie Universität Berlin CY - Berlin, Germany DA - 2005-06-08 PY - 2005 AN - OPUS4-7473 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reck, Günter T1 - X-ray Structure Determination from Powder Diffraction Data by PowderCell T2 - Tag der Chemie, Freie Universität Berlin CY - Berlin, Germany DA - 2005-06-08 PY - 2005 AN - OPUS4-7474 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Breitenbach, Martin T1 - Die Coulometrie als absolute Möglichkeit für die Zertifizierung von Referenzmaterial T2 - Tag der Chemie am 8. Juni 2005, Freie Universität Berlin CY - Berlin, Germany DA - 2005-06-08 PY - 2005 AN - OPUS4-7456 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Schwefel in Kraftstoffen - Referenzanalysen am Limit T2 - Tag der Chemie CY - Berlin, Germany DA - 2005-06-08 PY - 2005 AN - OPUS4-7457 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinholz, Uwe T1 - Referenzmaterial Wasser in Natrium-Calcium-Silicatglas - Bestimmung durch Kernreaktionsanalyse und Infrarotspektroskopie T2 - Präsentation im Rahmen einer Arbeitsgruppensitzung zum HVG/AiF-Forschungsvorhaben: "Entwicklung eines Analysesystems zur simultanen quantitativen Analyse von H2O;CO2;SO2 und N2 in silicatischen Gläsern" AiF- Forschungsvorhaben Nr. 12852 BR CY - Berlin, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-7459 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinholz, Uwe T1 - Darstellung eines Referenzmaterials für die ortsaufgelöste Wasserstoffanalytik in oberflächennahen Schichten T2 - Workshop "Ioenstrahlphysik und - technologie", Leipzig Leibnitz-Institut für Oberflächenmodifizierung e.V. CY - Leipzig, Germany DA - 2005-04-11 PY - 2005 AN - OPUS4-7461 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schiller, E. T1 - 188Re(III) Mixed-ligand Complexes: Stability Studies and Labeling of Biomolecules T2 - Conference on Radiotracers for In vivo Assessment Biological Function - New Directions (COST Action B12) CY - Warsaw, Poland DA - 2005-04-22 PY - 2005 AN - OPUS4-7346 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Formmassen: Ultraschall zur Warenausgangs- und Wareneingangskontrolle T2 - 3rd International Thermoset Conference CY - Iserlohn, Germany DA - 2005-04-21 PY - 2005 AN - OPUS4-7352 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - "Sehende" Nachtemperung: Praktische Anwendung der Methode der Dynamisch Mechanischen Analyse (DMA) T2 - 3rd International Thermoset Conference CY - Iserlohn, Germany DA - 2005-04-21 PY - 2005 AN - OPUS4-7353 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eltanany, Gehan T1 - Investigation of Interphases between Thermoplastic and Thermosetting Plymers - an AFM approch T2 - Polydays 2002 CY - Berlin, Germany DA - 2002-09-30 PY - 2002 AN - OPUS4-7481 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hentschel, Manfred P. T1 - Microriss-Charakterisierung mittels Röntgen-Refractions-Topographie T2 - DGZfP-Jahrestagung: ZfP in Anwendung, Entwicklung und Forschung CY - Weimar, Germany DA - 2005-05-06 PY - 2005 AN - OPUS4-7482 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niebergall, Ute T1 - Facture Behaviour and Mechanismus in HDPE/PP-Blends T2 - 7th European Symposium Polymer Blends CY - Villeurbanne, France DA - 2002-05-27 PY - 2002 AN - OPUS4-7483 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rudolph, Hans-Volker T1 - Damage Accumulation in Short Fibre Reinforced Thermoplast by X-Ray-Refraction T2 - 8th European Conference on Non Destructive Testing (ECNDT) CY - Barcelona, Spain DA - 2002-06-17 PY - 2002 AN - OPUS4-7484 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rudolph, Hans-Volker T1 - Characterisation of Damage Accumulation During Fatigue in Fibre Reinforced Thermoplast by X-Ray-Refraction T2 - Polydays 2002 CY - Berlin, Germany DA - 2002-09-03 PY - 2002 AN - OPUS4-7485 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - NMR characterization of nanocrystalline hydroxyapatite and of the mineral-protein interface in bone T2 - Tag der Chemie CY - Berlin, Germany DA - 2005-06-08 PY - 2005 AN - OPUS4-7555 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brekow, Gerhard T1 - Ultraschalluntersuchungen an elektronenstrahl- und reibrührgeschweißten Cu-Proben T2 - DGZfP Jahrestagung, Zerstörungsfreie Materialprüfung CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-7538 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Charlet, Philippe T1 - Les matériaux des référence certifiés en France: évolution de l'offre des producteurs depuis dix ans - Updating the COMAR database: a survey of the production of certified reference materials in France during the past ten years N2 - Abstract: Résumé Au cours de l’année 2004, le LNE, coordinateur national de COMAR, la banque internationale de Matériaux de Référence a mis à jour la partie française de cette banque. Cette mise à jour a permis de situer la France par rapport à ses homologues étrangers dans ce domaine. Cela a aussi permis de suivre l’évolution de l’offre des matériaux de référence certifiés en France. Abstract In 2004, the French coding centre for COMAR, LNE, has carried out the update of the information regarding the French producers of Certified Reference Materials. This update has not been performed for more than 10 years. A clear image of the French situation has been obtained that could be put in perspective with homologuous countries. The number of CRMs produced in France has increased of 10 percent with a relatively steady number of producers (around 20). New producers have appeared in emergent sectors (biology, biochemistry, clinical, environment) but the classic traditional sectors (metals, alloys) are still major contributors of the French production of CRMs. T2 - Poster: 12th International Metrology Congress CY - Lyon, France DA - 2005-06-21 PY - 2005 AN - OPUS4-7638 LA - fra AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stegemann, Bert T1 - Adhesion interaction between clean metal surfaces and well-defined AFM-tips T2 - 3rd ESF-Nanotribology Workshop CY - Sesimbra, Portugal DA - 2004-09-18 PY - 2004 AN - OPUS4-7626 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ritter, C. T1 - Moving adsorbed particles by scanning force microscopy; A new gateway to the study of nanoscale frictional properties T2 - 3rd ESF-Nanotribology Workshop CY - Sesimbra, Portugal DA - 2004-09-18 PY - 2004 AN - OPUS4-7627 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noack, Siegfried T1 - Präzisionsanalytik für Homogenitätsuntersuchungen mit Funken-OES und RFA - ein Vergleich N2 - Für die Beurteilung der Zuverlässigkeit von Analysenergebnissen sind die verfahrensspezifische Präzision und Richtigkeit die entscheidenden Größen. Die Präzision ist alleine für sich ein Maß für die Reproduzierbarkeit von Ergebnissen und deshalb ein Kriterium für die notwendige Anzahl von Parallel- bzw. Vergleichsanalysen und stellt damit auch einen ökonomischen Faktor dar. Für die Effektivität der Richtigkeits-Kontrolle eines Ergebnisses ist ebenfalls die Präzision ausschlaggebend. Weiterhin ist die Präzision auch für Homogenitätsuntersuchungen, die einen wesentlichen Arbeitsschritt bei der Zertifizierung von Referenzmaterialien darstellen "das Maß" für die Effektivität eines entsprechenden Materialtests. Die Präzision eines Verfahrens bzw. einer Methode ist somit ein wesentlicher qualitätsbestimmender Faktor. Sowohl die Funken - Emissionsspektrometrie (OES) als auch die Röntgenfluoreszenzanalyse (RFA) ermöglichen wegen ihrer kurzen Analysenzeiten bei Kompaktproben "schnelle" Ergebnisse bzw. hohen Probendurchsatz und werden daher vorteilhaft in der Routineanalytik aber auch für Homogenitätsuntersuchungen bei der Herstellung kompakter Referenzmaterialproben eingesetzt. Während bei der Funken-OES eine "zerstörungsfreie" Analyse und damit eine Mehrfachmessung an ein und derselben Probe strenggenommen nicht möglich ist, kann mit der RFA tatsächlich "dieselbe" Probe mehrfach analysiert werden. Damit ist es möglich, die Verfahrensstreuung bei der RFA hinreichend genau zu schätzen. Somit ist die Methode für Homogenitätsuntersuchungen grundsätzlich als ideal anzusehen, da Messwerteschwankungen bei der Messung verschiedener Proben eines Materials praktisch eindeutig Gehaltsschwankungen (Inhomogenitäten) in Materialien zuordenbar sind. Am Beispiel einer Cu-Ni-Legierung und weiteren Materialien konnte durch Vergleichsmessungen an einem Funkenemissionsspektrometer vom Typ "OBLF QSL 1500" sowie einem RFA-Spektrometer vom Typ "MagiX Pro PANalytical" unter Berücksichtigung entsprechender Unsicherheitsabschätzungen gezeigt werden, dass für hohe Gehalte im Prozentbereich die RFA der Funken - OES in der Präzision überlegen ist, während im Spurenbereich (< 0,1%) die Funken - OES zumindest keine schlechtere Präzision als die RFA und teilweise die Funken - OES sogar eine bessere Präzision als die RFA aufweist. Aus entsprechenden Vergleichsmessungen kann elementspezifisch die bei RFA und Funken - OES erreichbare Präzision ermittelt und damit die kleinste noch uterscheidbare durch Inhomogenitäten verursachte Gehaltsschwankung bei entsprchenden Materialien abgeleitet werden. Damit ist ein direkter Vergleich der elementspezifischen Eignung von Röntgenflreszenz- und Funkenspektrometern für Homogenitätsuntersuchungen möglich. T2 - 24. Spektrometertagung CY - Dortmund, Germany DA - 2005-09-20 PY - 2005 AN - OPUS4-7675 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goedecke, Thomas T1 - The new drop test and bonfire test facilities on the open air test site of the Federal Institute for Materials Research and Testing (BAM) T2 - IAPRI Symposium 2005 CY - Campinas, Brazil DA - 2005-05-22 PY - 2005 AN - OPUS4-7618 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ritter, C. T1 - Tribological properties of amorphous and crystalline antimony nanoparticles studied by SFM and TEM T2 - 69. Frühjahrstagung der Deutschen Physikalischen Gesellschaft (DPG) CY - Berlin, Germany DA - 2005-03-04 PY - 2005 AN - OPUS4-7620 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vaida, Mihai E. T1 - Two-photon-photoemission spectroscopy of supported silver clusters T2 - 69. Frühjahrstagung der Deutschen Physikalischen Gesellschaft (DPG) CY - Berlin, Germany DA - 2005-03-04 PY - 2005 AN - OPUS4-7621 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stegemann, Bert T1 - Adhesion force studied with colloid probe atomic force microscopy T2 - 69. Frühjahrstagung der Deutschen Physikalischen Gesellschaft (DPG) CY - Berlin, Germany DA - 2005-03-04 PY - 2005 AN - OPUS4-7625 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Zertifizierte Isotopenstandards für die Isotopenverdünnungsanalyse T2 - Analytica Messe 2000 CY - Munich, Germany DA - 2000-04-11 PY - 2000 AN - OPUS4-7707 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riebe, Gundel T1 - Prüfung der Dekontaminierbarkeit von radioaktiv kontaminierten Oberflächen nach DIN 25 415, Teil 1 (identisch mit ISO 8690 T2 - Analytica Messe 2000 CY - Munich, Germany DA - 2000-04-11 PY - 2000 AN - OPUS4-7708 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klingbeil, Patrick T1 - Comparative studies on the certification of reference materials by ICP-MS and TIMS using isotope dilution techniques T2 - EURACHEM/EUROLAB Symposium Reference Materials for Technologies in the New Millenium CY - Berlin, Germany DA - 2000-05-22 PY - 2000 AN - OPUS4-7709 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pritzkow, Wolfgang T1 - Kommerzielle Spike-Lösungen zur Verbesserung der Analytik T2 - 5. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse und 16. ICP-MS Anwendertreffen CY - Jülich, Germany DA - 2000-09-18 PY - 2000 AN - OPUS4-7710 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riebe, Gundel T1 - Bestimmung von Bor-Isotopenverhältnissen in Stahl und Aluminiumlegierungen für kerntechnische Anwendungen T2 - 5. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse und 16. ICP-MS Anwendertreffen CY - Jülich, Germany DA - 2000-09-18 PY - 2000 AN - OPUS4-7711 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Reduzierung von Molekülinterferenzen mit Hexapol-Kollisionszelle für die Bestimmung von Isotopenverhältnissen mit Multikollektor ICP-MS T2 - 5. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse und 16. ICP-MS Anwendertreffen CY - Jülich, Germany DA - 2000-09-18 PY - 2000 AN - OPUS4-7712 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Zertifizierung einer in Silizium implantierten Antimon-Schicht mit ICP-IDMS T2 - INAA und RBS ANAKON 2001 CY - Konstanz, Germany DA - 2001-04-04 PY - 2001 AN - OPUS4-7713 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riebe, Gundel T1 - Hochpräzise Bestimmung von Cadmium und Blei in Sedimentproben im Rahmen von CCQM-Ringversuchen T2 - 17. ICP-MS Anwendertreffen und 2nd International Conference on High-resolution Sector Field ICP-MS CY - Vienna, Austria DA - 2001-09-10 PY - 2001 N1 - Geburtsname von Dudek, Gabriele: Wermann, G. - Birth name of Dudek, Gabriele: Wermann, G. AN - OPUS4-7714 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pritzkow, Wolfgang T1 - Bestimmung der Magnesium-Isotopenhäufigkeiten in Urin und Blut T2 - 17. ICP-MS Anwendertreffen und 2nd International Conference on High-resolution Sector Field ICP-MS CY - Vienna, Austria DA - 2001-09-10 PY - 2001 AN - OPUS4-7715 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ostermann, Markus T1 - On the determination of the moisture content in different matrix materials T2 - Trends in sample preparation 2002 CY - Seggauberg, Austria DA - 2001-06-29 PY - 2001 AN - OPUS4-7716 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riebe, Gundel T1 - Combination of sophisticated sample digestion methods and highly accurate determination procedures shown for Sulphur in oil and Cadmium and Lead in sediment T2 - Trends in sample preparation 2002 CY - Seggauberg, Austria DA - 2001-06-29 PY - 2001 AN - OPUS4-7717 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Streicher, Doreen T1 - Zerstörungsfreie Brückenuntersuchungen mit Radar, Impact-Echo und Ultraschallecho - Forschungsvorhaben FE 86.028/2003/AP der Bundesanstalt für Straßenwesen T2 - 19. Zusammenkunft der Bauwerksprüfingenieure an der IHK Augsburg CY - Augsburg, Germany DA - 2005-04-26 PY - 2005 AN - OPUS4-10484 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - Structure and Related Properties of Polymerizable Silsesquioxanes as a Matrix for Dental Composites T2 - 13th International Workshop on Sol-Gel Science and Technology CY - Los Angeles, CA, USA DA - 2005-08-21 PY - 2005 AN - OPUS4-10748 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liebich, Almuth T1 - High Precision Measurement of Tributyltin in Sediment T2 - European Winter Conference on Plasma Spectrochemistry CY - Garmisch-Partenkirchen, Germany DA - 2003-01-12 PY - 2003 AN - OPUS4-10850 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Ageing studies of pulsed r. f. plasma-polymerized films prepared from organic monomers by XAS, ESCA und TOF-SIMS surface analysis T2 - 17th International Symposium on Plasma Chemistry CY - Toronto, Canada DA - 2005-08-07 PY - 2005 AN - OPUS4-10822 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reese, Daniel T1 - Dynamische Materialuntersuchung - Konzeption eines Split Hopkinsonstabes T2 - GESA-Symposium 2005 CY - Saarbrücken, Germany DA - 2005-09-21 PY - 2005 N1 - Geburtsname von Reese, Daniel: Klötzer, D. - Birth name of Reese, Daniel: Klötzer, D. AN - OPUS4-10841 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohrer, Christian T1 - Einfluss von Feuchte und Konvektionsströmung auf das Selbstentzündungsverhalten von Feststoffschüttungen T2 - GVC/DECHEMA-Jahrestagung CY - Wiesbaden, Germany DA - 2005-09-06 PY - 2005 AN - OPUS4-10859 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Bernd A1 - Otto, Peter A1 - Steckert, Carsten T1 - Optische Messverfahren und Referenzmaterialien T2 - DfwG-Jahrestagung 2005 CY - Berlin, Germany DA - 2005-10-04 PY - 2005 AN - OPUS4-10915 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - Complete Ring Assignment of Crystalline and Amorphous Cellulose Ia T2 - Symposium "New Developments in High Field NMR" CY - Leipzig, Germany DA - 2002-04-25 PY - 2002 AN - OPUS4-10871 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - The lateral resolution of ToF-SIMS analysed by means of an advanced nanoscale strip-pattern T2 - 15th International Conference on Secondary Ion Mass Spectrometry (SIMS XV) CY - Manchester, England DA - 2005-09-12 PY - 2005 AN - OPUS4-10872 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Juran, S. T1 - Synthese und Charakterisierung neuer sechszähniger 3,7-Diazabicyclo[3.3.1]nonan-Derivate und ihre Kupfer(II)-Komplexe T2 - 13. Arbeitstreffen der AG Radiochemie/Radiopharmazie CY - Seefeld, Austria DA - 2005-10-06 PY - 2005 AN - OPUS4-10874 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fichera, Mario Augusto T1 - A solid-state NMR study of thermal decomposition of flame retardant HIPS T2 - GDCh Magnetic Resonance Division, Max-Planck-Institute for Polymer Research CY - Mainz, Germany DA - 2005-09-26 PY - 2005 AN - OPUS4-10877 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malz, Frank T1 - Validation of quantitative NMR for purity assessments of pharmaceutical reference substances T2 - GDCh-Fachgruppen-Jahrestagung "Magnetische Resonanzspektroskopie" CY - Mainz, Germany DA - 2005-09-26 PY - 2005 AN - OPUS4-10879 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maltsev, Sergey T1 - A solid state NMR study of the biomaterial amorphous calcium phosphate T2 - GDCh-Fachgruppen-Jahrestagung "Magnetische Resonanzspektroskopie" CY - Mainz, Germany DA - 2005-09-26 PY - 2005 AN - OPUS4-10880 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steckert, Carsten T1 - Digitale Farbbildanalyse zur farbmetrischen Oberflächeninspektion von Beschichtungen nach Materialprüfung T2 - Jahrestagung der Deutschen farbwissenschaftlichen Gesellschaft (DfwG) CY - Berlin, Germany DA - 2005-10-04 PY - 2005 AN - OPUS4-10884 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Residual Stress in Alumina Sol-Gel Hard Coatings T2 - 13th International Workshop on Sol-Gel Science and Technology CY - Los Angeles, CA, USA DA - 2005-08-21 PY - 2005 AN - OPUS4-10940 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - MALDI-MS Supplementary to Chromatographic Techniques in Analysing- Chemical Heterogeneity of Polydimethylsiloxanes T2 - 2. Münchener Silicontage CY - Munich, Germany DA - 1994-08-01 PY - 1994 AN - OPUS4-2197 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sonnenschein, Helmut T1 - Cyclophane mit Bisindolizineinheiten als chirale organische Schalter T2 - Präsentationsveranstaltung des Instituts für Angewandte Chemie CY - Berlin, Germany DA - 1995-09-26 PY - 1995 AN - OPUS4-2208 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - Neue Möglichkeiten für die umfassende Charakterisierung von Polyethylenoxid-Addukten durch Kombination von HPLC mit MALDI-TOF-MS T2 - 37. Haupttagung der Kolloid-Gesellschaft CY - Dresden, Germany DA - 1995-09-26 PY - 1995 AN - OPUS4-2209 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kraus, Werner T1 - Käfigstrukturen für den Einschluß von Pertechnetat und Perrhenat T2 - Jahrestagung der Deutschen Gesellschaft für Kristallographie (DGK) CY - Jena, Germany DA - 2004-03-15 PY - 2004 AN - OPUS4-3492 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völz, Uwe T1 - Unterflurprüfeinrichtung "Wiesel" zur Prüfung von Eisenbahnrädern im eingebauten Zustand T2 - GACH-Jahrestagung der DGZfP CY - Salzburg, Austria DA - 2004-05-17 PY - 2004 AN - OPUS4-3528 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rudert, Rainer T1 - Characterisation of ceramic samples by scanning acoustic microscopy (SAM) T2 - DKG & NKV, Annual Meeting 2002 CY - Eindhoven, Netherlands DA - 2002-10-21 PY - 2002 AN - OPUS4-3546 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - Characterization of Silicon-Polymers by Liquid Chromatography and MALDI-TOF-MS T2 - GDCh-Hauptversammlung in Verbindung mit dem 37. IUPAC Congress CY - Berlin, Germany DA - 1999-08-14 PY - 1999 AN - OPUS4-3547 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merchel, Silke T1 - Oxygen Determination in BaF2 and CaF2 by CPAA, RPAA and Carrier Gas Hot Extraction T2 - 11th International Conference on Modern Trends in Activation Analysis (MTAA-11) CY - Guildford, England DA - 2004-06-20 PY - 2004 AN - OPUS4-3634 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Molnarne, Maria T1 - CHEMSAFE - A Basis Cooperation T2 - 11. International Symposium Loss Prevention and Safety Promotion in the Process Industries, Loss Prevention 2004 CY - Prague, Czech Republic DA - 2004-05-31 PY - 2004 AN - OPUS4-3593 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Woydt, Mathias T1 - Tribological Characterization of Titanium Suboxide Coatings Prepared by VPS Spraying T2 - 4th International Tribology Conference "Tribology of Surface Layers and Coatings", PRAGOTRIB 2004 CY - Prague, Czech Republic DA - 2004-06-17 PY - 2004 AN - OPUS4-3637 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Razus, D.M. T1 - Estimation of limiting Oxygen concentration of Fuel/Air/Inert Mixtures at Elevated Temperatures by means of Adiabatic Flame Temperatures T2 - ICOSECS 4 : 4th International Conference of the Chemical Societies of the South-East European Countries on Chemical Sciences in Changing Times: Visions, Challenges and Solutions; Faculty of Technology and Metallurgy CY - Belgrade, Serbia DA - 2004-07-18 PY - 2004 AN - OPUS4-3641 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - Einsatz moderner chromatographischer Charakterisierungsmethoden und MALDI-TOF-MS zur Bestimmung der molekularen und chemischen Heterogenität von funktionalisierten siliciumorganischen Polymeren T2 - DFG-Kolloquium "Silicium-Chemie" CY - Bielefeld, Germany DA - 1995-05-22 PY - 1995 AN - OPUS4-3738 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fritz, Andreas T1 - Dielectric spectroscopy of plasma copolymers of the system allyl alcohol/alkene T2 - 8th International Conference on Plasma Surface Engineering PSE 2002 CY - Garmisch-Partenkirchen, Germany DA - 2002-09-09 PY - 2002 AN - OPUS4-3672 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fritz, Andreas T1 - Dielectric spectroscopy of plasma copolymers or the system allyl alcohol/alkene T2 - DPG-Frühjahrstagung (Polymerphysik), Fachverband CPP, Themenkreis 3 CY - Regensburg, Germany DA - 2002-03-11 PY - 2002 AN - OPUS4-3673 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merchel, Silke T1 - The Effect of an Extraction Procedure on the Surface Chemistry of Synthetic Nanodiamonds T2 - 66th Annual Meteoritical Society Meeting (2003) CY - Münster, Germany DA - 2003-07-28 PY - 2003 UR - http://www.lpi.usra.edu/meetings/metsoc2003/pdf/5156.pdf AN - OPUS4-3767 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bishop, J. L. T1 - A spectral, chemical and mineralogical study of Mars analogue rocks N2 - A consortium has recently been initiated to study the macroscopic and microscopic properties of basaltic and andesitic rocks as analogue materials for Mars. The goal of this project is the integration of diverse spectroscopic approaches to evaluate the composition and texture of Mars materials using both in situ and remote sensing techniques. Initial emphasis is placed on assessment of the mineral composition for low albedo areas (basalt vs andesite vs weathering) of the Martian surface through spectral analysis of a suite of samples that have been exceptionally well characterized in the laboratory. The initial results indicate that the visible/NIR reflectance spectra, mid-IR reflectance and emission spectra, and Mössbauer spectra contain consistent diagnostic features associated with the measured modal mineralogy and provide baseline data for the first group of well characterized basalts. The consortium study involves integrating multiple remote sensing techniques for recent and upcoming missions to Mars in order to compare the results obtained by these instruments and thereby strengthen interpretive results. T2 - 33rd LPSC (Lunar and Planetary Science Conference) CY - Houston, TX, USA DA - 2002-03-11 PY - 2002 UR - http://www.lpi.usra.edu/meetings/lpsc2002/pdf/1168.pdf N1 - Geburtsname von Harloff-Puhr, Jan: Harloff, J. - Birth name of Harloff-Puhr, Jan: Harloff, J. AN - OPUS4-3786 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Taffe, Alexander T1 - Specimen for the improvement of NDT-methods - Design and construction of a large concrete slab for NDT methods at BAM T2 - NDT-CE 2003, International Symposium Non-Destructive Testing in Civil Engineering CY - Berlin, Germany DA - 2003-09-16 PY - 2003 AN - OPUS4-3821 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maierhofer, Christiane T1 - Non-destructive investigation of complex historic masonry structures with impulse radar T2 - NDT-CE 2003, International Symposium of Non-Destructive Testing in Civil Engineering CY - Berlin, Germany DA - 2003-09-16 PY - 2003 AN - OPUS4-3824 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goering, Harald T1 - Erfassung und Charakterisierung von Hartsegmenten in Polyurethanen mittels MALDI-TOF-MS T2 - Gesellschaft Deutscher Chemiker, "Klassische Polymere im Aufwind, Polymerchemie Aktuell" CY - Dresden, Germany DA - 1996-03-25 PY - 1996 AN - OPUS4-3746 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Phasentransformationen von anorganisch modifizierten Alumo-Xerogelen T2 - Jahrestagung der Gesellschaft für Thermische Analyse e.V. (GEFTA 2003) CY - Augsburg, Germany DA - 15.09.2003 PY - 2003 AN - OPUS4-4746 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rudert, Rainer T1 - Prüfung von keramischen Proben durch Raster-Ultraschallmikroskopie T2 - Sensor & Test 2003 CY - Nuremberg, Germany DA - 2003-05-13 PY - 2003 AN - OPUS4-4747 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schiller, Wolfgang Arno T1 - Werkstofftechnik der Hochleistungskeramik und Werbundwerkstoffe T2 - Materialica 2003 CY - Munich, Germany DA - 2003-09-15 PY - 2003 AN - OPUS4-4748 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Bärbel T1 - Keramik für Mikroelektronik und Mikrosystemtechnik: Mehrlagen-Folien-Technologie T2 - Sensor & Test 2003 CY - Nuremberg, Germany DA - 2003-05-13 PY - 2003 AN - OPUS4-4749 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Bärbel T1 - Keramik für Mikroelektronik und Mikrosystemtechnik: Multilayer-Technologie T2 - Messe und Kongress Mikrosystemtechnik mSYS CY - Berlin, Germany DA - 2003-04-28 PY - 2003 AN - OPUS4-4751 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nofz, Marianne T1 - Partiell korundhaltige Aluminiumoxid-Schichten auf Glas T2 - 77. Glastechnische Tagung CY - Leipzig, Germany DA - 2003-05-26 PY - 2003 AN - OPUS4-4752 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Untersuchungen zum Aushärteverhalten und zum Aushärtungszustand von Epoxidharz T2 - VII Internationale AVK-TV Konferenz CY - Baden-Baden, Germany DA - 2004-09-28 PY - 2004 AN - OPUS4-4759 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fritsch, Sebastian A1 - Stark, Wolfgang A1 - Kelm, Jürgen T1 - DMA- und DSC-Untersuchungen zur formalkinetischen Modellierung der Kautschukvulkanisation T2 - Polydays 2004 CY - Potsdam, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-4760 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hässelbarth, Werner T1 - Internationale Vergleichbarkeit von Analysenergebnissen T2 - Tag der Chemie, TU Berlin CY - Berlin, Germany DA - 2002-12-04 PY - 2002 AN - OPUS4-4762 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pradel, Rita T1 - COMAR2 The International Database for Certified Reference Materials on the Internet T2 - BERM 9 - 9th International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 2003-06-15 PY - 2003 AN - OPUS4-4763 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steiger, Thomas T1 - COMAR2 The International Database for Certified Reference Materials on the Internet T2 - GDCh-Jahrestagung Chemie 2003, 19. Seminar Aktivierungsanalyse CY - Munich, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4764 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hein, Sebastian T1 - Polychlorierte Biphenyle in festen Abfällen T2 - Lange Nacht der Wissenschaften, BAM CY - Berlin, Germany DA - 2003-06-14 PY - 2003 N1 - Geburtsname von Hein, Sebastian: Schütz, S. - Birth name of Hein, Sebastian: Schütz, S. AN - OPUS4-4786 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehnik-Habrink, Petra T1 - High Precision Measurement of PCBs in Sediment T2 - BERM 9 - 9th International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 2003-06-15 PY - 2003 N1 - Geburtsname von Hein, Sebastian: Schütz, S. - Birth name of Hein, Sebastian: Schütz, S. AN - OPUS4-4790 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Philipp, Rosemarie T1 - High precision measurement for quality control of the CRM ethanol in water T2 - BERM 9 - 9th International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 2003-06-15 PY - 2003 AN - OPUS4-4791 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Interlaboratory Comparison for the determination of MTBE and TAME in Water T2 - BERM 9 - 9th International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 2003-06-15 PY - 2003 AN - OPUS4-4792 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - International co-operation in the development and application of matrix reference materials. Case study: Polycycric aromatic hydrocarbons (PAH) and total petrol hydrocarbons (TPH) in soil T2 - BERM 9 - 9th International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 2003-06-15 PY - 2003 AN - OPUS4-4794 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Sebastian T1 - Measurement of Nitrogen in steel by Carrier Gas Hot Extraction - a Challenge in Calibrationn T2 - 6th International Workshop on Progress in Analytical Chemistry in the Steel and Metals Industries CY - Luxembourg City, Luxembourg DA - 2003-05-14 PY - 2003 AN - OPUS4-4765 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fensch-Kleemann, Elisabeth T1 - Nondestructive characteriazation of porous ceramics by X-Ray refraction T2 - 6th International Symposium on the Characterization of Porous Solids (COPS VI) CY - Alicante, Spain DA - 2002-05-08 PY - 2002 AN - OPUS4-4769 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Röhl-Kuhn, Barbara T1 - New Porous Certified Reference Materials (CRMs) for the Mercury Intrusion Method in the Pressure Range from 0.1 to 1 Mpa T2 - BERM 9 - 9th International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 2003-06-15 PY - 2003 AN - OPUS4-4770 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hitzegrad, Frank T1 - Investigations of Three-Dimensional Honeycomb Scaffolds as a Model for Bioceramic Foams T2 - Euromat 2003 CY - Lausanne, Switzerland DA - 2003-09-01 PY - 2003 AN - OPUS4-4735 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Ambiguities of comparative XRD and NMR studies of crystalline calcium phosphates T2 - 25. Jahrestagung der Fachgruppe "Magnetische Resonanzspektroskopie" CY - Leipzig, Germany DA - 2003-09-30 PY - 2003 AN - OPUS4-4736 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Tribologische Untersuchungen an SiC- und Si3N4-basierten Keramiken T2 - 14. Symposium "Verbundwerkstoffe und Werkstoffverbunde" CY - Vienna, Austria DA - 2003-07-02 PY - 2003 AN - OPUS4-4737 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Georg T1 - Cool bone cement T2 - 17. Treffpunkt Mmedizintechnik CY - Berlin, Germany DA - 2003-05-22 PY - 2003 AN - OPUS4-4740 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ploska, Ute T1 - Investigation of the influence of zirconium content on the formation of apatite on bioactive glass-ceramics T2 - Bioceramics 16; 16th International Symposium on Ceramics in Medicine CY - Oporto, Portugal DA - 2003-11-06 PY - 2003 AN - OPUS4-4741 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ploska, Ute T1 - A new procedure of a calcium-containing coating on implants of titanium alloy T2 - Bioceramics 16; 16th International Symposium on Ceramics in Medicine CY - Oporto, Portugal DA - 2003-11-06 PY - 2003 AN - OPUS4-4742 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Peplinski, Burkhard T1 - Können 5 ng oder 30 ng/g einer Nebenphase das Diffraktogramm einer Pulverprobe signifikant verändern? T2 - Gemeinsame Jahrestagung der Deutschen Gesellschaft für Kristallographie e. V. und der Deutschen Gesellschaft für Kristallwachstum und Kristallzüchtung e. V. CY - Jena, Germany DA - 2004-03-15 PY - 2004 AN - OPUS4-4783 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weißhoff, Hardy T1 - Polyazamakrozyklen zur Komplexierung seltener Erden - Anwenddungsmöglichkeiten in der Diagnostik T2 - Tag der Chemie CY - Berlin, Germany DA - 2003-06-24 PY - 2003 AN - OPUS4-4795 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - Observation of the Glycosidic Bond and Complete Ring Assignment of the 13C Signals of Bacterial Cellulose T2 - 45th Rocky Mountain Conference on Analytical Chemistry CY - Denver, CO, USA DA - 2003-07-27 PY - 2003 AN - OPUS4-4796 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - 17O NMR of Phosphate and Borophosphate Glasses T2 - 45th Rocky Mountain Conference on Analytical Chemistry CY - Denver, CO, USA DA - 2003-07-27 PY - 2003 AN - OPUS4-4797 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - Observation of the Glycosidic Bond and Complete Ring Assignment of the 13C Signals of Bacterial Celllulose T2 - 3rd Alpine Conference on Solid-State NMR CY - Chamonix, France DA - 2003-09-14 PY - 2003 AN - OPUS4-4798 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Externe Qualitätssicherung im Grundwassermonitoring T2 - Weiterbildungsveranstaltung der Mitarbeiter der Umweltämter, Verwaltungsakademie des Landes Berlin CY - Berlin, Germany DA - 2004-03-02 PY - 2004 AN - OPUS4-4799 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Dielectric Investigations under Irradiation of Photochromic Copolymers with Azobenzene Moieties in the Side Group T2 - 7th International Symposium Polymers for Advanced Technologies CY - Fort Lauderdale, FL, USA DA - 2003-09-21 PY - 2003 AN - OPUS4-4666 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Pulsed plasma initiated homo and copolimerisation - deposition rates and plasma diagnostic in dependence on pulse length and frequency T2 - ISPC-16 CY - Taormina, Italy DA - 2003-06-22 PY - 2003 AN - OPUS4-4667 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Comparison of different plasmachemical processes for the formation of monosort functionalised polymer surfaces T2 - ISPC-16 CY - Taormina, Italy DA - 2003-06-22 PY - 2003 AN - OPUS4-4668 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - Plasma copolymerisation - a recommended way for formation of defined functionalized surfaces T2 - Biosurf V - Functional Polymeric Surfaces in Biotechnology CY - Zurich, Switzerland DA - 2003-09-25 PY - 2003 AN - OPUS4-4670 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Pulsed plasma initiated homo and copolymerisation - characterization of thin plasma polymer layers by dielectric relaxation spectroscopy T2 - ISPC-16 CY - Taormina, Italy DA - 2003-06-22 PY - 2003 AN - OPUS4-4671 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Swaraj, Sufal T1 - Non-destructive depth profilino and semiquantitative determination of unsaturated carbon species in pulse plasma deposited organic films T2 - ECASIA `03 CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4672 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oran, Umut T1 - Study of effects of plasma parameters by characterization of pulse plasma deposited organic films T2 - ECASIA `03 CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4673 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Complex organic thin films for optoelectronics: combined depossition techniques T2 - ECASIA `03 CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4674 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael T1 - Info-Poster der Datenbank Gefahrgut für die Fachveranstaltung zum Transport gefährlicher Güter auf der IAA T2 - 9. Informationsveranstaltung zum Transport gefährlicher Güter / IAA-Nutzfahrzeuge CY - Hanover, Germany DA - 2004-09-30 PY - 2004 AN - OPUS4-4835 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goebbels, Jürgen T1 - Computed Tomography experiments at BAMline T2 - BESSY Users Meeting 2004 CY - Berlin, Germany DA - 2004-12-02 PY - 2004 AN - OPUS4-4861 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Illerhaus, Bernhard T1 - Hochauflösende 3D-CT für die virtuelle Rekonstruktion des Schädels von Le Moustier I T2 - Der Neandertaler von Le Moustier Sonderaustellung im Museum für Vor-u. Frühgeschicte, Schloss- Charlottenburg-Langhansbau CY - Berlin, Germany DA - 2004-12-04 PY - 2004 AN - OPUS4-4862 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steckert, Carsten T1 - Digitale Farbbildanalyse zur objektiven Qualitätsbewertung von Kraftfahrzeugwaschanlagen T2 - BAM-Messestand auf der Test & Sensor, International Conference on Materials Testing CY - Nuremberg, Germany DA - 2003-05-13 PY - 2003 AN - OPUS4-4864 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steckert, Carsten T1 - Einsatz der Informationstechnik zur objektiven Bewertung von Farbveränderungen auf dekorativen Beschichtungen T2 - Karl-Miescher-Ausstellungswettbewerb zur Farbenlehre 1999 CY - Berlin, Germany DA - 1999-11-04 PY - 1999 AN - OPUS4-4825 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Joachim T1 - Eigenschaften von Polypropylen- und PVDF-Folien für Luftschall-Anwendungen T2 - DACH-Jahrestagung 2004: ZfP in Forschung, Entwicklung und Anwendung CY - Salzburg, Austria DA - 2004-05-17 PY - 2004 AN - OPUS4-4895 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinecke, E. T1 - High-resolution UV-laser spectroscopy on jet-cooled 9-cyano-anthracene and 9-(N-carbazolyl)-anthracene T2 - DPG Frühjahrstagung CY - Hanover, Germany DA - 2003-03-24 PY - 2003 AN - OPUS4-4896 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinecke, E. T1 - UV-laser spectroscopy on 9-(n-carbazolyl)-antracene in electric fields T2 - The Eighteenth Colloquium on High Resolution Molecular Spectroscopy CY - Dijon, France DA - 2003-09-08 PY - 2003 AN - OPUS4-4897 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Glanz, Mario T1 - Selten Erd- und Erdalkalimetall induzierten Polymeriasation von Methacrylaten T2 - XVIth Workshop on Rare Earth Elements CY - Berlin, Germany DA - 2003-10-04 PY - 2003 AN - OPUS4-4898 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ecker, Klaus T1 - Oxygen determination in BaF2 and CaF2 by Charged Particle Activation Analysis T2 - 16th International Conference on Ion Beam Analysis CY - Albuquerque, NM, USA DA - 2003-06-29 PY - 2003 AN - OPUS4-4900 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weh, Lothar T1 - Dispersibility optimization of ceramic particles for ML-LTCC production T2 - International Congress for Particle Technology, PARTEC 2004 CY - Nuremberg, Germany DA - 2004-03-16 PY - 2004 AN - OPUS4-4878 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - Observation of the Glycosidic Bond and Complete Ring Assignment of the 13C Signals of Bacterial Cellulose T2 - 25. Jahrestagung der Fachgruppe "Magnetische Resonanzspektroskopie" CY - Leipzig, Germany DA - 2003-09-29 PY - 2003 AN - OPUS4-4882 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grünert, W. T1 - Fe_ZSM-5 - Katalisatoren für die SCR von NO durch Kohlenwasserstoffe: Katalysatorstruktur und katalytische Eigenschaften T2 - 35. Jahrestreffen deutscher Katalytiker CY - Weimar, Germany DA - 2002-03-20 PY - 2002 AN - OPUS4-4883 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maltsev, Yuri T1 - Two-dimensional Mössbauer spectra T2 - 27th International Conference on the Applications of the Mössbauer Effect (ICAME 2003) CY - Muscat, Oman DA - 2003-09-21 PY - 2003 AN - OPUS4-4884 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Menzel, Michael T1 - Glass Laboratory Intercomparison using Mössbauer Spectroscopy T2 - 27th International Conference on the Applications of the Mössbauer Effect (ICAME 2003) CY - Muscat, Oman DA - 2003-09-21 PY - 2003 AN - OPUS4-4885 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nestler, K. T1 - Thermogravimetric and RAMAN sspectroscopic investigations on different Coals in comparison to dispersed Anthracite found in permineralized tree fern Psaronius sp. T2 - 12. Tagung Festkörperanalytik CY - Vienna, Austria DA - 2003-09-22 PY - 2003 AN - OPUS4-4886 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reck, Günter T1 - Uric Acid Monohydrate - a New Urinary Calculus Phase T2 - Jahrestagung der Deutschen Gesellschaft für Kristallographie (DGK) CY - Berlin, Germany DA - 2003-03-10 PY - 2003 AN - OPUS4-4887 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schubert, G. T1 - Identification of a New Urinary Calculus Phase T2 - 10. Europäisches Harnsteinsymposium CY - Istanbul, Turkey DA - 2003-06-11 PY - 2003 AN - OPUS4-4888 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Joachim T1 - Einsatz der Ultraschall-Sensorik bei der Verarbeitung reaktiver Kunsstoffe T2 - 7. internationale AVK-TV-Tagung CY - Baden-Baden, Germany DA - 2004-09-28 PY - 2004 AN - OPUS4-4893 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Einsatz der Dynamisch Mechanischen Analyse (DMA) zur Untersuchung von Polymerüberzügen für feste Arzneiformen mit kontrollierter Wirkstofffreisetzung T2 - Polydays 2004 CY - Potsdam, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-4869 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Dynamisch Mechanische Analyse (DMA) - Epoxidharze-Untersuchungen von flüssig bis fest T2 - VII Internationale AVK-TV Konferenz CY - Baden-Baden, Germany DA - 2004-09-28 PY - 2004 AN - OPUS4-4870 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Kalibrierung von Sensoren zur Alkohol-Detektion T2 - 2. Workshop Multigassensorik auf dem Weg in die Routine, BAM CY - Berlin, Germany DA - 2002-06-27 PY - 2002 AN - OPUS4-4980 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Multigassensoren in der Praxis T2 - Hannover-Messe 2003 CY - Hanover, Germany DA - 2003-04-07 PY - 2003 AN - OPUS4-4981 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Adam, Karin T1 - Optimierung von Reinigungsmethoden T2 - Poster soll in der Dauerausstellung über die Restaurierung der mittelalterlichen Kirchenfenster in der Marienkirche ausgestell werden CY - Frankfurt (Oder), Germany DA - 2004-02-01 PY - 2004 AN - OPUS4-4966 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Aßmus, Kristin T1 - verformung und Gefügetransformation bei Schwingungsverschleiß von austenitischen FeCrNi-Legierungen T2 - 37. Metallographie-Tagung 2003 CY - Berlin, Germany DA - 2003-09-17 PY - 2003 AN - OPUS4-4949 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Binkowski, Sigrid T1 - Charakterisierung des Gefüges der austenitischen FeCrNi-Legierung 1.4876 nach Reibbeanspruchung bei 37 K T2 - 37. Metallographie-Tagung 2003 CY - Berlin, Germany DA - 2003-09-17 PY - 2003 AN - OPUS4-4950 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koscheev, A.P. T1 - Surface chemistry of chemically treated diamond nanograins T2 - 34th LPSC (Lunar and Planetary Science Conference) CY - Houston, TX, USA DA - 2003-03-17 PY - 2003 UR - http://www.lpi.usra.edu/meetings/lpsc2003/pdf/1287.pdf AN - OPUS4-4920 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ott, U. T1 - Platinum in presolar nanodiamond residues - an AMS approach T2 - 34th LPSC (Lunar and Planetary Science Conference) CY - Houston, TX, USA DA - 2003-03-17 PY - 2003 UR - http://www.lpi.usra.edu/meetings/lpsc2003/pdf/1167.pdf AN - OPUS4-4923 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Overcoming present limitations in ICP-MS for iron measurements T2 - European Winter Conference on Plasma Spectrochemistry 2003 CY - Garmisch-Partenkirchen, Germany DA - 2003-01-12 PY - 2003 AN - OPUS4-4924 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dembinski, W. T1 - The chemical isotope effects of Ga, In and Ge - a challenge for mass spectrometry and isotope chemistry T2 - International Workshop on "Problems in the Use of Gases and Isotopic Substances in Metrology and for a Knowledge-Based Society" (PUGIS 2003) CY - Turin, Italy DA - 2003-05-19 PY - 2003 AN - OPUS4-4925 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Bestimmung von Schwefel in Dieselöl mit TIMS T2 - 6. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse / 18. ICP-MS Anwendertreffen CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4927 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Calcium in Serum - Referenzanalysen mit TIMS T2 - 6. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse / 18. ICP-MS Anwendertreffen CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4929 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pritzkow, Wolfgang T1 - Neue, verbesserte und SI-rückgeführte Atomgewichtsbestimmung von Cd mit MC-TIMS und MC-IPC-MS T2 - 6. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse / 18. ICP-MS Anwendertreffen CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4930 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pritzkow, Wolfgang T1 - Measurement of Isotopic Composition of Elements (MICE) - a new interlaboratory comparison T2 - 6. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse / 18. ICP-MS Anwendertreffen CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4932 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Haibel, A. T1 - Synchrotron-m-Tomography on Aluminium and Zinc foams T2 - BESSY Users Meeting 2002 CY - Berlin, Germany DA - 2002-12-05 PY - 2002 AN - OPUS4-4934 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Illerhaus, Bernhard T1 - Non-destructive Testing of Cast Magnesium Alloys by Computerized Tomography T2 - 6th International Conference on Magnesium Alloys and their Applications CY - Wolfsburg, Germany DA - 2003-11-18 PY - 2003 AN - OPUS4-4936 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidemann, Gerd T1 - Non-destructive Analysis of Materials with Synchrotron Computed Tomography T2 - BESSY Users Meeting 2003 CY - Berlin, Germany DA - 2003-12-04 PY - 2003 AN - OPUS4-4937 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Multigassensoren im Test T2 - Sensor & Test 2003 CY - Nuremberg, Germany DA - 2003-05-13 PY - 2003 AN - OPUS4-4995 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Arbeitskreis Multigassensorik T2 - Sensor & Test 2003 CY - Nuremberg, Germany DA - 2003-05-13 PY - 2003 AN - OPUS4-4996 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Von Einzelsensor zum Sensor-Array T2 - 6. Dresdner Sensor-Symposium CY - Dresden, Germany DA - 2003-12-08 PY - 2003 AN - OPUS4-4998 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - A publicly available specification (PAS) for ellipsometry: Measurement of reference coatings and non-ideal samples T2 - 3rd International Conference on Spectroscopic Ellipsometry (ICSE 3) CY - Vienna, Austria DA - 2003-07-07 PY - 2003 AN - OPUS4-4999 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Optimierung von Reinigungsverfahren bei Oberflächen mit Fehlstellen T2 - Sitzung des projektbegleitenden Ausschusses und Sitzung des VDMA-Ausschusses Steriltechnik (AiF-Projekt) CY - Frankfurt am Main, Germany DA - 2003-12-04 PY - 2003 AN - OPUS4-5000 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Cobet, C. T1 - A VUV-XUV ellipsometric setup at BESSY II: optical characterization of nitride semiconductors T2 - International Conference on Spectroscopic Ellipsometry (ICSE 3) CY - Vienna, Austria DA - 2003-07-07 PY - 2003 AN - OPUS4-5001 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, K. H. T1 - PECVD Coating equipment for reference carbon based mono- and multilayer coatings on various substrate materials T2 - Diamond-Tagung 2003 CY - Salzburg, Austria DA - 2003-09-08 PY - 2003 AN - OPUS4-5003 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eberstein, Markus T1 - Zum Einfluss der Glasstruktur auf die dielektrischen Verluste oxidischer Gläser im Mikrowellenbereich T2 - 77. Glastechnische Tagung CY - Leipzig, Germany DA - 2003-05-26 PY - 2003 AN - OPUS4-5004 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - Charakterisierung des thermischen und hydrolytischen Abbaus von Polylactiden durch HPLC und MALDI-TOF-MS T2 - 2. Kongressmesse Umwelt Concept CY - Dresden, Germany DA - 1996-10-23 PY - 1996 AN - OPUS4-2227 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - A VUV-XUV ellipsometric setup at BESSY II: Optical characterisation of Nitride Semiconductors T2 - 3rd International Conference on Spectroscopic Ellipsometry CY - Vienna, Austria DA - 2003-07-06 PY - 2003 AN - OPUS4-2907 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hasenstab, Andreas T1 - Use of Low Frequency Ultrasound Echo Technique to Determine Cavities in Wooden Construction Composites T2 - Proceedings of NDT-CE 2003, Non-Destructive Testing in Civil Engineering (NDT-CE) CY - Berlin, Germany DA - 2003-09-16 PY - 2003 AN - OPUS4-2909 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Taffe, Alexander T1 - Guidelines for NDT methods in civil engineering T2 - NDT-CE 2003 CY - Berlin, Germany DA - 2003-09-16 PY - 2003 AN - OPUS4-2910 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Streicher, Doreen A1 - Krause, Martin T1 - Ultraschallecho an Beton - Definition von Kenngrößen zur Beurteilung der Leistungsfähigkeit von bildgebenden Verfahren N2 - Für die Strukturaufklärung von Betonbauteilen existieren mehrere bildgebende Ultraschallecho-Verfahren, u. a. mit Nutzung des Prinzips der synthetischen Apertur. Die Ergebnisse werden mit unterschiedlichen Verfahren, mit oder ohne Anwendung von Rekonstruktionsrechnungen, ausgewertet und in der Regel als B- bzw. C-Bilder dargestellt. Ziel ist es, die unterschiedlichen Verfahren anhand von Messreihen an Testkörpern mit bekannten Prüfobjekten in Hinblick auf Ihre Leistungsfähigkeit quantitativ zu fassen und zu vergleichen, um den Einsatz der Prüfverfahren bei Untersuchungen unbekannter Objekte zu optimieren. Dazu wurden drei Kenngrößen definiert. Als erster Schritt erfolgte die Anwendung der Definitionen auf vorliegende Messergebnisse zu einer in einem 50 cm dicken Betontestkörper parallel zur Messfläche eingebrachten Bohrung. T2 - DGZfP-Jahrestagung 2002: ZfP in Anwendung, Entwicklung und Forschung CY - Weimar, Germany DA - 06.05.2002 KW - Strukturaufklärung KW - Rekonstruktionsrechnungen KW - Betontestkörper PY - 2002 AN - OPUS4-3896 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - The behavior of polymers confined to nanoporous glasses investigated by dielectric, thermal and neutron spectroscopy T2 - Vortrag an der Universität Toulouse "Paul Sabatier" CY - Toulouse, France DA - 2004-07-21 PY - 2004 AN - OPUS4-3900 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Dynamics of surface layer in cyanobiphenyl-aerosil nanocompositeswith a high silica density T2 - 3th International Conference on Broadband Dielectric Spectroscopy and its Applications CY - Delft, Netherlands DA - 2004-08-23 PY - 2004 AN - OPUS4-3902 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lausch, Regine T1 - Geometrieeffekte und Hüllrohrortung bei der Impaktecho-Prüfung von Betonbauteilen - Experimentelle und modelltheoretische Ergebnisse N2 - Das Impaktecho-Verfahren wird seit vielen Jahren zur zerstörungsfreien Untersuchung von Betonbauteilen eingesetzt. Um die Mechanismen der elastischen Wellenausbreitung besser zu verstehen und den Einfluss von Geometrieeffekten auf das Messergebnis herauszuarbeiten, wurden Messungen und numerische Simulationen an einer Betonplatte mit drei innenliegenden Hüllrohren durchgeführt. T2 - DGZfP-Jahrestagung 2002: ZfP in Anwendung, Entwicklung und Forschung CY - Weimar, Germany DA - 06.05.2002 KW - Numerische Simulation KW - Betonplatte KW - Hüllrohre PY - 2002 AN - OPUS4-3886 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Martin T1 - Hohlstellenortung in Holzbalken mit dem Ultraschallverfahren N2 - Zusammenfassung: Sehr klares Echo - der Rückwand - der künstlich eingebrachten Fehlstellen - der Schäden in Faserrichtung (Kernfäulenachbildung) T2 - DGZfP-Jahrestagung 2002: ZfP in Anwendung, Entwicklung und Forschung CY - Weimar, Germany DA - 06.05.2002 KW - Kernfäule KW - Standsicherheit KW - Schadenserkennung PY - 2002 AN - OPUS4-3883 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blümel, Peter T1 - New standards for compatibility testing of filling substances and the revised Assimilation list T2 - PIRA, Plastics packaging - compatibility testing for dangerous goods - new developments, Brussels City Centre CY - Brussels, Belgium DA - 2003-09-30 PY - 2003 AN - OPUS4-3847 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidemann, Gerd T1 - Computed Tomography at 7T WLS-1/BAMline T2 - BESSY Users Meeting 2002 CY - Berlin, Germany DA - 2002-12-05 PY - 2002 AN - OPUS4-3851 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schröder, K. T1 - Plasma assisted chemical micropatterning for biomedical purposes T2 - APP Spring Meeting CY - Bad Honnef, Germany DA - 2003-02-23 PY - 2003 AN - OPUS4-3918 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Quantitative measuring of C radical sites at polymer surfaces using the derivatization technique and XPS T2 - 10th European Conference on Applications of Surface and Interface Analysis (ECASIA '03) CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-3920 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brink, Arne T1 - Active Infrared Thermography in Civil Engineering - Quantitative Analysis by Numerical Simulation T2 - NDT-CE 2003, International Symposium Non-Destructive Testing in Civil Engineering CY - Berlin, Germany DA - 2003-09-16 PY - 2003 AN - OPUS4-3825 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Streicher, Doreen T1 - Parameters for the Quantitative Assessment of Ulrasonic Imaging for Concrete Elements T2 - NDT-CE 2003, International Symposium Non-Destructive Testing in Civil Engineering CY - Berlin, Germany DA - 2003-09-16 PY - 2003 AN - OPUS4-3826 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eich, Gerd T1 - Entwicklung eines kombinierten Schutzsystems für chloridbelastete Betonflächen aus Spitzverzinkung mit abdichtender Beschichtung T2 - AiF-Innovationstag CY - Berlin, Germany DA - 2004-08-31 PY - 2004 AN - OPUS4-3906 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sickert, Roland T1 - Mit Funkenerosion zum kalibrierten ZfP Testfehler T2 - DACH-Jahrestagung 2004: ZfP in Forschung, Entwicklung und Anwendung CY - Salzburg, Austria DA - 2004-05-17 PY - 2004 AN - OPUS4-4086 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rühe, S. T1 - Untersuchungen an lasergeschweißten Karosserieteilen mit Wirbelstrom T2 - DACH-Jahrestagung 2004: ZfP in Forschung, Entwicklung und Anwendung CY - Salzburg, Austria DA - 2004-05-17 PY - 2004 AN - OPUS4-4087 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mitropetros, Constantinos T1 - Detonation Wave Impact on the Surface of a Chemically Active Organic Bubbly Liquid T2 - Plasma Physics and Short Time-scale Physics, Deutsche Physikalische Gesellschaft (DPG), Spring Conference CY - Aachen, Germany DA - 2003-03-24 PY - 2003 AN - OPUS4-4040 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Femto- and Nanosecond Laser Treatment of Doped Polymethylmethacrylate T2 - E-MRS 2004 Spring Meeting CY - Strasbourg, France DA - 2004-08-24 PY - 2004 AN - OPUS4-4145 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Li, B. T1 - Nonlinear Absorption Measurement of Dielectric Components by Pulsed Top-hat Beam Thermal Lens T2 - 13th International Conferences on Photoacoustic and Photothermal Phenomena (ICPPP) CY - Rio de Janeiro, Brazil DA - 2004-07-05 PY - 2004 AN - OPUS4-4151 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Munz, Martin T1 - Concentration gradients at thermoset-thermoplastic interfaces - the case of epoxypoly(vinylpyrrolidone) T2 - 7th European Adhesion Conference "EURADH2004", veranstaltet von der DECHEMA CY - Freiburg, Germany DA - 2004-09-06 PY - 2004 AN - OPUS4-4156 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kautek, Wolfgang T1 - Femtosecond laser interaction with silicon in aqueous contact T2 - 2nd European Conference on Applications of Femtosecond Lasers in Materials Science (FemtoMat 2004) CY - Bad Kleinkirchheim, Austria DA - 2004-02-25 PY - 2004 AN - OPUS4-4160 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kautek, Wolfgang T1 - Safety in Femtosecond Laser Technology - SAFEST - a European Research Project T2 - 2nd European Conference on Applications of Femtosecond Lasers in Materials Science (FemtoMat 2004) CY - Bad Kleinkirchheim, Austria DA - 2004-02-25 PY - 2004 AN - OPUS4-4163 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kautek, Wolfgang T1 - Femtosecond laser induced damage in absorbing filters used for laser protection T2 - 2nd European Conference on Applications of Femtosecond Lasers in Materials Science (FemtoMat 2004) CY - Bad Kleinkirchheim, Austria DA - 2004-02-25 PY - 2004 AN - OPUS4-4164 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - XPS Investigations of chromium nitride thin films T2 - 9th International Conference on Plasma Surface Engineering (PSE) CY - Garmisch-Partenkirchen, Germany DA - 2004-09-13 PY - 2004 AN - OPUS4-4139 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kautek, Wolfgang T1 - Femtosecond laser interaction with silicon in aqueous contact T2 - Gordon Research Conference: LASER INTERACTIONS WITH MATERIALS CY - Andover, NH, USA DA - 2004-08-01 PY - 2004 AN - OPUS4-4140 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gründer, Klaus-Peter T1 - Digital photogrammetry in experimental transport and storage container investigations T2 - PATRAM-Konferenz/Technical Tour, BAM-Freiversuchsgelände Horstwalde CY - Baruth, Germany DA - 2004-09-20 PY - 2004 AN - OPUS4-4180 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Habel, Wolfgang T1 - Lightning-safe diaphragm pressure gauge for geotechnical applications using a long-term reliable absolute EFPI sensor T2 - European Workshop on Optical Fibre Sensors 2004 CY - Santander, Spain DA - 2004-06-09 PY - 2004 AN - OPUS4-4181 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Macroscopic Function vs. Microscopic and Nanoscopic Features: Multi-probe Testing of Surfaces and Thin Films by Optical Characterisation Techniques T2 - 9th International Conference on Plasma Surface Engineering (PSE) CY - Garmisch-Partenkirchen, Germany DA - 2004-09-13 PY - 2004 AN - OPUS4-4182 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Surfaces for Food Industry: Efects of Microscopic and Macroscopic Features, Roughness and Surface Energy on the Adhesion and Kinetics of Species T2 - 9th International Conference on Plasma Surface Engineering (PSE) CY - Garmisch-Partenkirchen, Germany DA - 2004-09-13 PY - 2004 AN - OPUS4-4183 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinholz, Uwe T1 - Amorphes Silizium auf Silizium - ein Referenzmaterial für die Wasserstoffanalytik T2 - IGAS-Jahreskolloquium CY - Berlin, Germany DA - 2004-11-17 PY - 2004 AN - OPUS4-5066 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Steps to a new and improved SI-traceable atomic weight for natural abundance cadmium and certified isotopically enriched materials T2 - 19. ICP-MS-Anwendertreffen CY - Zurich, Switzerland DA - 2004-09-01 PY - 2004 AN - OPUS4-5067 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ünveren, Ercan T1 - ESCA of activated powder Cr2O3 catalysts T2 - 10th European Conference on Applications of Surface and Interface Analysis (ECASIA '03) CY - Berlin, Germany DA - 2003-09-05 PY - 2003 AN - OPUS4-5045 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ünveren, Ercan T1 - Analysis of X-ray Photoelectron Cr 2p Spectra obtained from Powder Samples of Cr(III) compounds of O, F and Cl T2 - 10th European Conference on Applications of Surface and Interface Analysis (ECASIA '03) CY - Berlin, Germany DA - 2003-09-05 PY - 2003 AN - OPUS4-5046 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schors, Jörg T1 - Quantitative Bestimmung der Mikroriss-Dichte in Kompositen und Polymerwerkstoffen mittels Röntgen-Refraktions-Topographie T2 - DGZfP-Jahrestagung 2003: Zerstörungsfreie Materialprüfung - ZfP in Anwendung, Entwicklung und Forschung CY - Mainz, Germany DA - 2003-05-26 PY - 2003 AN - OPUS4-5052 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klobes, Peter T1 - Microstructural Characterization of Porous Materials by 2-D X-ray Refraction Topography T2 - 3rd International TRI/Princeton Workshop "Characterization of Porous Materials:from Angstroms to Millimeters" CY - Princeton, NJ, USA DA - 2003-06-23 PY - 2003 AN - OPUS4-5053 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinholz, Uwe T1 - Ein Referenzmaterial für die Wasserstoffanalytik T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-5056 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Redmer, Bernhard T1 - Untersuchungen zur Kontrastauflösung der mechanisierten Durchstrahlungsprüfung in Abhängigkeit von der Durchstrahlungsgeometrie T2 - DGZfP-Jahrestagung 2003: Zerstörungsfreie Materialprüfung - ZfP in Anwendung, Entwicklung und Forschung CY - Mainz, Germany DA - 2003-05-26 PY - 2003 AN - OPUS4-5060 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sickert, Roland T1 - Funkenerosionsanlage zur Kalibrierfehlerstellung T2 - DGZfP-Jahrestagung 2003: Zerstörungsfreie Materialprüfung - ZfP in Anwendung, Entwicklung und Forschung CY - Mainz, Germany DA - 2003-05-26 PY - 2003 AN - OPUS4-5061 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mc Hugh, Jarlath T1 - Ultrasonic and Dielectric Process Monitoring at Thermoset Manufacturing T2 - Jahrestagung des AVK-TV 2003 CY - Baden-Baden, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-5062 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fengler, Petra T1 - Hidden Ultrasound Senssors in a Mould Tool T2 - Jahrestagung des AVK-TV 2003 CY - Baden-Baden, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-5064 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klyszcz, Andreas T1 - Nanostrukturierte Multifunktionsschichten mittels Sol-Gel-Technologie T2 - Materialica 2003 CY - Munich, Germany DA - 2003-09-29 PY - 2003 AN - OPUS4-5015 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Results of a round-robin experiment in multiple-pulse LIDT measurment with ultrashort pulses T2 - Boulder Damage Symposium CY - Boulder, CO, USA DA - 2003-09-22 PY - 2003 AN - OPUS4-5016 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Pulsed Plasma-polymerized Films Prepared from Organic Molecules: Characterization by X-ray Absoption Spectroscopy, Photoelectron Spectroscopy and Time of Flight Static Secondary Ion Mass Spectrometry T2 - 3. BAMline Seminar, BESSY CY - Berlin, Germany DA - 2004-11-29 PY - 2004 AN - OPUS4-5018 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Pulsed Plasma-polymerized Films Prepared from Organic Molecules: Characterization by X-ray Absoption Spectroscopy, Photoelectron Spectroscopy and Time of Flight Static Secondary Ion Mass Spectrometry T2 - BESSY Users Meeting 2004 CY - Berlin, Germany DA - 2004-12-02 PY - 2004 AN - OPUS4-5019 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oleksy-Frenzel, Jolanta T1 - Weinsorten- und Fehlaromerkennung mit einem Multigassensor und chemometrischer Auswertung T2 - Analytica Conference 2002 CY - Munich, Germany DA - 2002-04-23 PY - 2002 AN - OPUS4-5021 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oleksy-Frenzel, Jolanta T1 - Fehlaromaerkennung in Wein T2 - Hannover-Messe 2003 CY - Hanover, Germany DA - 2003-04-07 PY - 2003 AN - OPUS4-5022 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oran, Umut T1 - A comparison study between Time-of-Flight Static Secondary lon Mass Spectrometry (TOF-SSIMS) and X-Ray Photoelectron Spectroscopy (XPS) in terms of Poly-dimethyl-siloxane (PDMS) contemination of Polystyrene (PS) samples T2 - 10th European Conference on Applications of Surface and Interface Analysis (ECASIA '03) CY - Berlin, Germany DA - 2003-09-05 PY - 2003 AN - OPUS4-5024 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Termal Investigations of Chromium Nitride Thin Films investigated by DTA T2 - 8th International Conference on Plasma Surface Engineering PSE 2002 CY - Garmisch-Partenkirchen, Germany DA - 2002-09-09 PY - 2002 AN - OPUS4-5011 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Qualitätsmanagement für die industrielle coulometrische Spurenfeuchtemessung T2 - Sensor & Test 2003 CY - Nuremberg, Germany DA - 2003-05-13 PY - 2003 AN - OPUS4-5012 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Taloring Electrical Properties of Modified SiO2 Films T2 - XII International Workshop on Sol-Gel-Science and Technology CY - Sydney, Australia DA - 2003-08-24 PY - 2003 AN - OPUS4-5013 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klyszcz, Andreas T1 - Patterned Sol-Gel-Derived Multifunctional Passivation Coatings T2 - Materials Week 2002 CY - Munich, Germany DA - 2002-09-29 PY - 2002 AN - OPUS4-5014 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Swaraj, Sufal T1 - Non-destruktive depth profiling and semi-quantitative determination of unsaturated carbon species in pulse plasma deposited organic films T2 - 10th European Conference on Applications of Surface and Interface Analysis (ECASIA '03) CY - Berlin, Germany DA - 2003-09-05 PY - 2003 AN - OPUS4-5043 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Swaraj, Sufal T1 - Study of effects of plasma parameters by characterization of pulse plasma deposited organic films T2 - 10th European Conference on Applications of Surface and Interface Analysis (ECASIA '03) CY - Berlin, Germany DA - 2003-09-05 PY - 2003 AN - OPUS4-5044 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oran, Umut T1 - Characteriazation of Plasma-deposited Ethylene, Ally-alcohol and Ethylene-Ally-alcohol copolymer Films by Time-of-Flight Static Secondary lon Mass Spectrometry (TOF-SIMS) T2 - 10th European Conference on Applications of Surface and Interface Analysis (ECASIA '03) CY - Berlin, Germany DA - 2003-09-05 PY - 2003 AN - OPUS4-5025 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Procop, Mathias T1 - EDXTOOLS with new features T2 - EMAS (European Microbeam Analysis Society) 2003 / 8th European Workshop on Modern Developments and Applications in Microbeam Analysis CY - Chiclana de la Frontera, Spain DA - 2003-05-18 PY - 2003 AN - OPUS4-5027 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Procop, Mathias T1 - Measurement of X-ray emission rates for K-lines T2 - EMAS (European Microbeam Analysis Society) 2003 / 8th European Workshop on Modern Developments and Applications in Microbeam Analysis CY - Chiclana de la Frontera, Spain DA - 2003-05-18 PY - 2003 AN - OPUS4-5028 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Procop, Mathias T1 - EDXTOOLS with new features T2 - 10th European Conference on Applications of Surface and Interface Analysis (ECASIA '03) CY - Berlin, Germany DA - 2003-09-05 PY - 2003 AN - OPUS4-5030 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Procop, Mathias T1 - Measurement of X-ray emission rates for K-lines T2 - 10th European Conference on Applications of Surface and Interface Analysis (ECASIA '03) CY - Berlin, Germany DA - 2003-09-05 PY - 2003 AN - OPUS4-5031 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - BAM-L002 - A new type of certified reference material for length calibration and testing of lateral resolution in the nanometre range T2 - 10th European Conference on Applications of Surface and Interface Analysis (ECASIA '03) CY - Berlin, Germany DA - 2003-09-05 PY - 2003 AN - OPUS4-5032 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Shimamura, Aki T1 - Synthesis and Characterization of Sol-Gel Derived RuO2-SiO2 Thin Films T2 - Materials Week 2002 CY - Munich, Germany DA - 2002-09-29 PY - 2002 AN - OPUS4-5033 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Shimamura, Aki T1 - characterisation of Sol-Gel derived Glass Composite Thin Films T2 - ECASIA `03 CY - Berlin, Germany DA - 2003-10-05 PY - 2003 AN - OPUS4-5034 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Qualitätssicherung bei der Prüfung von Gassensoren T2 - 2. Workshop Multigassensorik auf dem Weg in die Routine, BAM CY - Berlin, Germany DA - 2002-06-27 PY - 2002 AN - OPUS4-4956 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Adam, Karin T1 - Aluminium in MFI-Membranen: Verteilung und Lokalisierung während der Synthese, der Einfluss der Support und die Wirkung auf die Permeation T2 - 16. Deutsche Zeolith Tagung CY - Dresden, Germany DA - 2004-03-03 PY - 2004 AN - OPUS4-4960 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gutmann, Toivo T1 - Faseroptischer Messkopf für Druckaufnehmer T2 - International Symposium on Geotechnical Measurement and Modelling CY - Karlsruhe, Germany DA - 2003-09-23 PY - 2003 AN - OPUS4-5164 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Habel, Wolfgang T1 - Validierung faseroptischer Sensoren T2 - Test 2003, International Conference on Materials Testing CY - Nuremberg, Germany DA - 2003-05-13 PY - 2003 AN - OPUS4-5165 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jankowski, Lukasz T1 - Calibration Procedure for Low-End CCD Cameras T2 - Test 2003, International Conference on Materials Testing CY - Nuremberg, Germany DA - 2003-05-13 PY - 2003 AN - OPUS4-5166 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Subaric-Leitis, Andreas T1 - Charakterisierung der Dynamik kraft- bzw. weggeregelter Materialprüfanstalten T2 - VDI/VDE-GMA Kongress CY - Baden-Baden, Germany DA - 2003-06-03 PY - 2003 AN - OPUS4-5167 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kraus, Werner T1 - Käfigstrukturen für den Einschluss von Pertechnetat und Perrhenat T2 - Jahrestagung der Deutschen Gesellschaft für Kristallographie (DGK) CY - Jena, Germany DA - 2004-03-15 PY - 2004 AN - OPUS4-5174 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yozgatli, Hakan-Peter T1 - Quantitative Bestimmung des Wassergehaltes in Kieselgläsern mittels Infrarotspektroskopie - Ein Vergleich unterschiedlicher Auswerteverfahren T2 - 78. Glastechnische Tagung CY - Nuremberg, Germany DA - 2004-06-07 PY - 2004 AN - OPUS4-5197 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reuther, H. T1 - Sn4 + charge density variation in In2O3 T2 - International Symposium on the Industrial Application of the Mössbauer Effect ISIAME 2004 CY - Madrid, Spain DA - 2004-10-04 PY - 2004 AN - OPUS4-5187 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wendrich, Astrid T1 - Aufbau eines historischen Mauerwerkskörpers ("Obelix") zur Bewertung von zerstörungsfreien Verfahren T2 - DACH-Jahrestagung 2004: ZfP in Forschung, Entwicklung und Anwendung CY - Salzburg, Austria DA - 2004-05-17 PY - 2004 AN - OPUS4-5206 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klobes, Peter A1 - Minor, D.B. T1 - Development of the Porosimetry Standard NIST SRM 1917 / CRM BAM-P127: First Joint Reference Material Certification by NIST and BAM N2 - After a two years' work on the basis of the "Agreement on a Cooperation in the Field of Reference Materials" between NIST and BAM the first joint certification project of NIST and BAM could be successfully finished in August 2002. The material officially named NIST SRM 1917 / CRM BAM-P127 (pellets of Al2O3 with a diameter of about 1 mm) is a certified nanoporous reference material for mercury porosimetry ("Mercury Porosimetry Standard"). Similar to the BAM materials CRM BAM-PM-120, ?121 and -122, the whole Hg intrusion curve has been certified also for the present reference material. From this a number of advantages for the user result: · availability of a large number of certified data points in the typical working range of mercury porosimeters (0.1 to 400 MPa) · therefore the possibility of a wide range assessment of the pressure transducer performance and the volume calibration of the porosimeter · suitability of this reference material for 200 MPa instruments as well as for 400 MPa instruments 17 laboratories from the USA and 15 laboratories from European countries took part in the interlaboratory comparison. The statistical evaluation (calculation of the mean intrusion curve with uncertainty boundaries) has been carried out at NIST using the Vangel Rukhin algorithm. In particular, the certified properties are a) the Hg intrusion curve between 0.1 and 400 MPa b) the cumulative pore volume curve between 3.7 and 14708 nm c) the pore volume at selected intrusion pressures (as single values) as well as the mean and the most frequent pore diameter. This first joint development and certification of a reference material represents a new way in the collaboration between NIST and BAM, which make to avoid multiple developments at the international scale and therefore to save time, costs and expenses. T2 - Campuswoche der Humboldt Universität zu Berlin, Erwin-Schrödinger-Zentrum in Adlershof CY - Berlin, Germany DA - 2003-12-01 PY - 2003 AN - OPUS4-5327 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bücker, Michael T1 - Anorganisch modifiziertes Holz: Verbundwerkstoff mit verbesserten Eigenschaften T2 - Messe Bau 2003 CY - Munich, Germany DA - 2003-01-13 PY - 2003 AN - OPUS4-5426 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bücker, Michael T1 - Wood Modification by Sol-gel Derived Precursors T2 - European Conference on Wood Modification CY - Ghent, Belgium DA - 2003-04-03 PY - 2003 AN - OPUS4-5428 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rikowski, Eckhard T1 - Schäden an Gläsern des 19./20. Jahrhunderts - Symptome, Ursachen und Möglichkeiten für die Restaurirung T2 - 10. Innovationstag der AiF CY - Berlin, Germany DA - 2003-06-03 PY - 2003 AN - OPUS4-5429 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rikowski, Eckhard T1 - Entwicklung neuer Behandlungsverfahren für extrem geschädigte Glasmalereien des 19./20. Jahrhunderts - Untersuchung an Glasmalfarben T2 - 10. Innovationstag der AiF CY - Berlin, Germany DA - 2003-06-03 PY - 2003 AN - OPUS4-5430 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bücker, Michael T1 - A new kind of wood protection by nanoscaled silica sols T2 - Materialica 2003 CY - Munich, Germany DA - 2003-09-16 PY - 2003 AN - OPUS4-5431 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Characterization of Ceramic nanoscale powders by PCS, AFM and TEM T2 - Partec CY - Nuremberg, Germany DA - 2004-03-16 PY - 2004 AN - OPUS4-5366 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Fügen von Al2O3-Grünkörpern aus Heißgießmassen auf Paraffinbasis T2 - DKG-Jahrestagung CY - Karlsruhe, Germany DA - 2004-10-11 PY - 2004 AN - OPUS4-5370 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Terebesi, I. T1 - Extended release pellets prepared by dry polymer powder coating T2 - Konferenz der European Federation for Pharmaceutical Sciences Eufeps CY - Nice, France DA - 2005-06-12 PY - 2005 AN - OPUS4-7934 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Georg T1 - Resorbable bioceramic coated pins: solubility behaviour in vitro and adequate reactions in vivo T2 - IX. Conference of the European Ceramic Society (ECERS) CY - Portorož, Slovenia DA - 2005-06-19 PY - 2005 AN - OPUS4-7814 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Herstellung von Gläsern mittlerer Wassergehalte T2 - 79. Glastechnische Tagung CY - Würzburg, Germany DA - 2005-05-23 PY - 2005 AN - OPUS4-7805 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Retter, Utz T1 - BMWA-Projekt "Entwicklung und Herstellung von Tensidreferenzmaterialien - Aufbau einer Tensid-Referenzdatenbank" T2 - Evaluierung der BAM durch den Wissenschaftsrat CY - Berlin, Germany DA - 2006-01-17 PY - 2006 AN - OPUS4-11809 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Mineral oil content in sediments and soils: ERM-CC015a - a certified reference material for quality assurance T2 - BERM 10, Tenth International Symposium on Biological and Environmental Reference Materials CY - Charleston, SC, USA DA - 2006-04-30 PY - 2006 AN - OPUS4-11810 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Ultraschallspektroskopie von Al2O3-Gelcasting-Schlickersystemen T2 - Jahrestagung der Deutschen keramischen Gesellschaft und Deutschen Gesellschaft für Materialkunde CY - Selb, Germany DA - 2005-10-10 PY - 2005 AN - OPUS4-11829 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Keramik-Keramik Verbindungen mit hoher Festigkeit durch Verschweissen von Al2O3 Grünkörperteilen T2 - 12. Innovationstag der AIF, "Innovationspartnerschaften für den Mittelstand" CY - Berlin, Germany DA - 2005-06-01 PY - 2005 AN - OPUS4-11830 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zscherpel, Uwe T1 - Digital Radiological Reference Images for Castings: ASTM E155 - Synchronized Image Viewing T2 - BAM-DIN-Workshop on Image Technology CY - Berlin, Germany DA - 2005-04-18 PY - 2005 AN - OPUS4-11760 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zscherpel, Uwe T1 - Bildschärfe digitaler radiologischer Detektoren für ZfP-Anwender T2 - DGZfP-Jahrestagung CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-11761 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaber, Martin T1 - Thermisch induzierte Wasserstoffabgabe aus Quarzgläsern T2 - 79. Glastechnische Tagung CY - Würzburg, Germany DA - 2005-05-23 PY - 2005 AN - OPUS4-11780 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hentschel, Manfred P. T1 - Characterization of specific surfaces by X-Ray Refraction Topography T2 - Workshop "Nano Security 2005", MPI für Mikrostruktur-Physik CY - Halle (Saale), Germany DA - 2005-10-24 PY - 2005 AN - OPUS4-11745 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Dynamische Tragfähigkeitsprüfung von Pfählen T2 - Deutscher Ausschuss für Stahlbeton CY - Berlin, Germany DA - 2005-03-10 PY - 2005 AN - OPUS4-11894 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Dynamische Baugrunderkundung T2 - Deutscher Ausschuss für Stahlbeton CY - Berlin, Germany DA - 2005-03-10 PY - 2005 AN - OPUS4-11896 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Dynamische Integritätsprüfung von Pfählen T2 - Deutscher Ausschuss für Stahlbeton CY - Berlin, Germany DA - 2005-03-10 PY - 2005 AN - OPUS4-11897 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dantan, Nathalie T1 - Bauteil-integrierbarer faseroptischer pH-Sensor zur Schadensfrüherkennung im Stahlbeton- und Spannbeton T2 - Fachtagung Bauwerksdiagnose CY - Berlin, Germany DA - 2006-02-23 PY - 2006 AN - OPUS4-11870 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Ulrich T1 - Identifikation explosionsgefährdeter Bereiche in technischen Systemen mittels Strömungssimulation T2 - Strömungstechnische Tagung, TU Dresden, Institut für Strömungstechnik CY - Dresden, Germany DA - 1996-10-02 PY - 1996 AN - OPUS4-11887 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Rotational fluctuations of water inside nanopores/nanocavities of molecular sieves T2 - Workshop Confit 2006 CY - Grenoble, France DA - 2006-03-23 PY - 2006 AN - OPUS4-12015 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Polymers confined to nanoporous glasses investigated by quasielastic and inelastic neutron scattering T2 - Workshop Confit 2006 CY - Grenoble, France DA - 2006-03-23 PY - 2006 AN - OPUS4-12000 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zorn, R. T1 - Segmental dynamics of poly(methyl phenyl siloxane) confined to nanoporous glasses T2 - Workshop Confit 2006 CY - Grenoble, France DA - 2006-03-23 PY - 2006 AN - OPUS4-12002 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Molecular fluctuations of 4-n-octyl-4'cyanobiphenyl confined to nanoporous SBA-type molecular sieves with different filling degrees T2 - Workshop Confit 2006 CY - Grenoble, France DA - 2006-03-23 PY - 2006 AN - OPUS4-12005 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Neutron spectroscopy on polymers confined to nanoporous glasses T2 - Frühjahrstagung der Deutschen Physikalischen Gesellschaft CY - Dresden, Germany DA - 2006-03-21 PY - 2006 AN - OPUS4-12032 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dantan, Nathalie T1 - Der mühsame Weg vom Konzept zum robusten Langzeiteinsatz faseroptischer Sensoren bei Überwachungsaufgaben am Beispiel des Monitoring des pH-Wertes in der Nähe der Stahlbewehrung in Betonbauwerken. T2 - 1. Jahrestagung des Arbeitskreises Prozessanalytik der GDCh CY - Berlin, Germany DA - 2006-03-20 PY - 2006 AN - OPUS4-12058 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frenzel, Wolfgang T1 - Flow injection analysis for process control - a happy marriage or cumbersome affair? T2 - 1. Jahrestagung des Arbeitskreises Prozessanalytik der GDCh CY - Berlin, Germany DA - 2006-03-20 PY - 2006 AN - OPUS4-12059 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dantan, Nathalie T1 - Fiber optic pH sensor for in-situ monitoring of corrosion condition in steel-reinforced concrete structures. T2 - 8th European Conference on Optical Chemical and Biosensors Europt(r)ode VIII. CY - Tübingen, Germany DA - 2006-04-02 PY - 2006 AN - OPUS4-12060 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Mechanical properties of ECR-Modified RF-PECVD a-C:H coatings T2 - PSE 2006 CY - Garmisch-Partenkirchen, Germany DA - 2006-09-10 PY - 2006 AN - OPUS4-12038 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Energy Quantification of Interface Debonding Processes Using 'Stiff' Test Devices T2 - Gordon Conference on Composite Materials CY - San Buenaventura, CA, USA DA - 2001-01-28 PY - 2001 AN - OPUS4-12108 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kneipp, Janina T1 - Nanosensors in living cells based on surface-enhanced Raman scattering (SERS) T2 - Gordon Conference on Bioanalytical Sensors CY - Ventura, CA, USA DA - 2006-02-26 PY - 2006 AN - OPUS4-12070 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Redmer, Bernhard T1 - Tomografische Verfahren zur Bestimmung der Tiefenlage von Baustählen in Bauwerken T2 - Fachtagung Bauwerksdiagnose CY - Berlin, Germany DA - 2006-02-23 PY - 2006 AN - OPUS4-12074 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Hannes T1 - MgF2 moderate temperature deposition for optical UV-applications T2 - 4th Workshop Ellipsometry 2006 CY - Berlin, Germany DA - 2006-02-20 PY - 2006 AN - OPUS4-12076 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Ermüdungsverhalten von faserverstärkten Thermoplasten T2 - Präsentationsveranstaltung des Berliner Verbands für Polymerforschung CY - Berlin, Germany DA - 1989-05-18 PY - 1989 AN - OPUS4-12094 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hampe, Andreas T1 - An Advanced Equipment for Single-Fibre Pull-Out test designed to monitor the fracture process T2 - Interfacial Phenomena in Composite Materials CY - Cambridge, England DA - 1993-09-13 PY - 1993 AN - OPUS4-12095 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Charakterisierung des Interface-Versagens in Faserverbundwerkstoffen mit mikromechanischen Testmethoden T2 - 5. Berliner Polymeren-Tage CY - Potsdam, Germany DA - 1994-10-05 PY - 1994 AN - OPUS4-12096 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Charakterisierung des Faser-Matrix-Interface mit dem Indentation-Test T2 - Verbundwerkstoffe und Werkstoffverbunde CY - Bayreuth, Germany DA - 1995-10-24 PY - 1995 AN - OPUS4-12097 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Energy Dissipation of the Fibre-Matrix Debonding Process Investigated with the Indentation Technique T2 - Interfacial Phenomena of Composite Materials IPCM'95 CY - Eindhoven, Netherlands DA - 1995-09-11 PY - 1995 AN - OPUS4-12098 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Der Einfluss der Transkristallisation auf die scheinbare Scherfestigkeit von kohlefaserverstärktem Polyphenylensulid (PPS) mit der Einzelfaserauszugsmethode T2 - Verbundwerkstoffe und Werkstoffverbunde CY - Bayreuth, Germany DA - 1995-10-24 PY - 1995 AN - OPUS4-12099 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Energy based characterization of the fiber-matrix interface unsing the pull-out and the push-out test T2 - Micro Mat '97 CY - Berlin, Germany DA - 1997-04-16 PY - 1997 AN - OPUS4-12100 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Energy based characterization of the fiber-matrix interface unsing the pull-out and the push-out test T2 - Interfacial Phenomena of Composite Materials IPCM'97 CY - Eger, Hungary DA - 1997-09-01 PY - 1997 AN - OPUS4-12101 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hampe, Andreas T1 - An Advanced Indentation Technique for the Characterization of the Fibre-Matrix Interface T2 - Gordon Conference on Composites CY - San Buenaventura, CA, USA DA - 1997-01-05 PY - 1997 AN - OPUS4-12102 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Interfacial properties and their determination by using stiffness optimized test devices T2 - Workshop on Micro-Mechanics Measurement Technologies, NIST CY - Gaithersburg, MD, USA DA - 1997-05-28 PY - 1997 AN - OPUS4-12103 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Untersuchung der Phasenhaftung in Verbundwerkstoffen mit dem Faser-Eindrückversuch T2 - Wissensbörse - Präparationstechnik und Analytik CY - Berlin, Germany DA - 19.02.1998 PY - 1998 AN - OPUS4-12104 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Influence of water on the fibre-matrix adhesion investigated by the single fiber indentation method T2 - 4th European Conference on Adhesion, 1st World Congress on Adhesion an Related Phenomena CY - Garmisch-Partenkirchen, Germany DA - 1998-09-06 PY - 1998 AN - OPUS4-12105 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Testing the fibre-matrix adhesion in fiber reinforced polymers using the single fibre push-out method T2 - 8th European Conference on Applications of Surface and Interface Analysis (ECASIA 99) CY - Seville, Spain DA - 1999-10-04 PY - 1999 AN - OPUS4-12106 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalinka, Gerhard T1 - Monitoring the interface crack propagation with micromechanical test devices T2 - Interfacial Phenomena in Composite Materials CY - Berlin, Germany DA - 2001-01-28 PY - 2001 AN - OPUS4-12107 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Link, T. T1 - High resolution synchrotron topography of Nickelbase superalloys T2 - 69. DPG Physikertagung CY - Berlin, Germany DA - 2006-03-07 PY - 2006 AN - OPUS4-12176 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kruschwitz, Sabine T1 - SIP Messungen an Baumaterial mit unterschiedlich salinen Porenwässern und Feuchtegehalten T2 - Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG) an der Universität Bremen CY - Bremen, Germany DA - 2006-03-06 PY - 2006 AN - OPUS4-12183 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klinger, Christian T1 - Implantatschäden: Analyse der Ursachen T2 - Werkstoffprüfung 2005, DVM CY - Berlin, Germany DA - 2005-12-01 PY - 2005 AN - OPUS4-12187 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sojref, Regine T1 - Planetenkugelmühle statt Rührwerksmühle: Aufbereitung und Charakterisierung kollodialer (100 nm Partikel) Korund-Suspensionen T2 - Tagung "Aufbereitung und Recycling" CY - Freiberg, Germany DA - 2005-11-01 PY - 2005 AN - OPUS4-12188 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scholz, G. T1 - Solid state MAS NMR and solid state EPR investigations of nanostructured AIF3 powders obtained by mechanical milling T2 - Tag der Chemie an der FU CY - Berlin, Germany DA - 2005-06-08 PY - 2005 AN - OPUS4-12189 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scholz, G. T1 - A magnetic resonance investigation of nanostructured solid fluorides obtained by high-energy ball milling T2 - Magnetresonanztagung GdCh CY - Davos, Switzerland DA - 2005-08-28 PY - 2005 AN - OPUS4-12191 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Urban, Ingrid T1 - Investigation of Brake Pad Samples before and after Sqealing T2 - Microscopy Conference 2005 (6. 3-Länder-Tagung) CY - Davos, Switzerland DA - 2005-08-28 PY - 2005 AN - OPUS4-12193 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matschat, Ralf T1 - Netzwerk "Metrologie in der Chemie" für zuverlässige Messergebnisse in der chemischen Analytik T2 - Analytica Conference CY - Munich, Germany DA - 2006-04-25 PY - 2006 AN - OPUS4-12146 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frenzel, Wolfgang T1 - Flow injection analysis for process control - a happy marriage or cumbersome affair? T2 - 10th international conference on Flow analysis CY - Oporto, Portugal DA - 2006-09-03 PY - 2006 AN - OPUS4-12215 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Martin, Tina T1 - Komplexe Widerstandstomografie an stehenden Bäumen T2 - Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG) an der Universität Bremen CY - Bremen, Germany DA - 2006-03-06 PY - 2006 AN - OPUS4-12166 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Femtosecond laser-induced damage of gold films T2 - E-MRS 2006 Spring Meeting, Symposium H CY - Nice, France DA - 2006-05-29 PY - 2006 AN - OPUS4-12252 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krysell, M. A1 - Becker, Roland T1 - Feasibility study for certified reference materials for organic compounds in sewage sludge (SLUDGESUPPORT) T2 - 10th Internatiaonal Symposium on Biological and Environmental Reference Materials (BERM-10) CY - Charleston, SC, USA DA - 2006-04-30 PY - 2006 AN - OPUS4-12283 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - Determination of modulation transfer function by imaging of square-wave gratings with different periods in the nanometre range T2 - NanoScale 2006 CY - Bern, Switzerland DA - 2006-04-24 PY - 2006 AN - OPUS4-12287 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - Bestimmung von polaren nitroaromatischen Verbindungen mittels Elektrospray-MS/MS T2 - Analytica Conference 2006 CY - Munich, Germany DA - 2006-04-25 PY - 2006 AN - OPUS4-12229 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weritz, Friederike T1 - Praktische Anwendungen der Laser-Induzierten Plasma Spektroskopie im Bauwesen - Fallstudien an einem Klärbehälter und einem Parkdeck T2 - Bauwerksdiagnose 2006 CY - Berlin, Germany DA - 2006-02-23 PY - 2006 AN - OPUS4-12235 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - BAM-L200 - Ein neuartiges Referenzmaterial für die Bestimmung und Kontrolle der Bildauflösung im Nanometerbereich T2 - Analytica 2006 CY - Munich, Germany DA - 2006-04-25 PY - 2006 AN - OPUS4-12288 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Helmut T1 - Festigkeit und Verformungsverhalten von Baustoffen, Kriechen und Schwinden von hochfestem Beton T2 - Wissenschaftsrat / BAM CY - Berlin, Germany DA - 2006-01-17 PY - 2006 AN - OPUS4-12352 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Helmut T1 - Festigkeit und Verformung von Baustoffen, Kriechen und Schwinden von Beton bei variablen Klimabedingungen T2 - Wissenschaftsrat / BAM CY - Berlin, Germany DA - 2006-01-17 PY - 2006 AN - OPUS4-12353 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Helmut T1 - Festigkeit und Verformung von Baustoffen, Zum Ermüdungsverhalten von Beton T2 - Wissenschaftsrat / BAM CY - Berlin, Germany DA - 2006-01-17 PY - 2006 AN - OPUS4-12354 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Helmut T1 - Festigkeit und Verformungsverhalten von Baustoffen, Verhalten von hochfestem und ultrahochfestem Beton im Druckversuch T2 - Wissenschaftsrat / BAM CY - Berlin, Germany DA - 2006-01-17 PY - 2006 AN - OPUS4-12355 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mellmann, Günter T1 - Betoninstandsetzung mit Spritzbeton - Anforderungen an den Untergrund T2 - Posterpräsentation anläßlich des Tages der offenen Tür der BAM CY - Berlin, Germany DA - 2004-06-19 PY - 2004 AN - OPUS4-12356 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Assheuer, Hendrik T1 - Mehrfach-Recycling von Beton T2 - Posterpräsentation einer Diplomarbeit an der TFH Berlin Januar 2004, Posterpräsentation anlässlich des Tages der offenen Tür der BAM CY - Berlin, Germany DA - 2004-06-19 PY - 2004 AN - OPUS4-12357 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malz, Frank T1 - NMR - an accurate and precise tool for purity determinations of pharmaceutical reference materials T2 - 47th Experimental Nuclear Magnetic Resonance Conference (ENC) CY - Pacific Grove, CA, USA DA - 2006-04-23 PY - 2006 AN - OPUS4-12373 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fichera, Mario Augusto T1 - A solid state NMR investigation of the thermal decomposition process of the flame retardant HIPS / Mg(OH)2 / Pr system T2 - NMR Symposium of the 48th Rocky Mountain Conference on Analytical Chemistry CY - Breckenridge, CO, USA DA - 2006-07-23 PY - 2006 AN - OPUS4-12375 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Klaus T1 - Device dependent linear relative CIELAB data lab* and colorimetric data for corresponding colour input and output on monitors and printers T2 - Tagung 75 Jahre CIE CY - Ottawa, Canada DA - 2006-05-16 PY - 2006 AN - OPUS4-12338 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steiger, Thomas T1 - COMAR - the international database for certified reference materials T2 - Analytica Conference 2006, Messe München CY - Munich, Germany DA - 2006-04-25 PY - 2006 AN - OPUS4-12341 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kneipp, Janina T1 - Synchrotron FTIR microspectroscopic investigations on the interaction of nanoparticulate structures with eukaryotic cells T2 - SPEC 2006 Shedding New Light on Disease: Optical Diagnosis for the New Millenium CY - Heidelberg, Germany DA - 2006-05-20 PY - 2006 AN - OPUS4-12379 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fichera, Mario Augusto T1 - NMR investigation of a special intermediate reaction product of heat treated flame retardant HIPS / Mg(OH)2 / Pr system T2 - NMR Symposium of the 48th Rocky Mountain Conference on Analytical Chemistry CY - Breckenridge, CO, USA DA - 2006-07-23 PY - 2006 AN - OPUS4-12380 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Klaus T1 - CIELAB definitionand and application of device independent rgb* colour coordinates for output of elementary colours T2 - Tagung Intern. Society Colour Council (ISCC) CY - Ottawa, Canada DA - 2006-05-14 PY - 2006 AN - OPUS4-12337 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Direct solid sampling ET AAS analysis of high-purity silicon carbide powders T2 - VII European Furnace Symposium on Atomic Absorption Spectrometry, Electrothermal Vaporization and Atomization (VII EFS) and XII Solid Sampling Colloquium with Atomic Spectrometry (XII SSC) CY - Saint Petersburg, Russia DA - 2006-07-02 PY - 2006 AN - OPUS4-12478 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs T1 - Gefügeanalyse von mineralischen Baustoffen T2 - Tag der offenen Tür BAM CY - Berlin, Germany DA - 2004-07-14 PY - 2004 AN - OPUS4-12482 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs T1 - Alkali-Silca reaction (ASR) in concrete T2 - Standort H23/R012, BAM CY - Berlin, Germany DA - 2006-05-02 PY - 2006 AN - OPUS4-12483 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs T1 - The micro X-Ray fluorescence analysis (MXRF) T2 - Stand H23/R012, BAM CY - Berlin, Germany DA - 2006-05-02 PY - 2006 AN - OPUS4-12484 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Glastransformationstemperatur wasserhaltiger Gläser T2 - 80. Glastechnische Tagung CY - Dresden, Germany DA - 2006-06-12 PY - 2006 AN - OPUS4-12485 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs T1 - Lime mortar for the conservation of the Timur Shah Mausoleum T2 - Standort H23/R012, BAM CY - Berlin, Germany DA - 02.05.2006 PY - 2006 AN - OPUS4-12486 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Bestimmung von CAS in Klärschlämmen T2 - Jahrestagung 2006 der GDCh, Fachgruppe "Umweltchemie und Ökotoxikologie", Martin-Luther-Universität Halle-Wittenberg CY - Halle (Saale), Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-12428 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klobes, Peter T1 - Characterization of two micro-mesoporous activated carbons using gas adsorption, mercury porosimetry, small angle X-Ray scattering and raman spectroscopy T2 - Fourth International TRI/Princeton Workshop "Characterization of Porous Materials: From Angstroms to Millimeters" CY - Princeton, NJ, USA DA - 2006-06-21 PY - 2006 AN - OPUS4-12433 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs T1 - The character of crystalline in granulated blast furnace slag T2 - Nanocem Cenference CY - Copenhagen, Denmark DA - 2006-04-25 PY - 2006 AN - OPUS4-12458 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beck, Uwe T1 - Safety of food production: Characterisation of sterile surfaces T2 - PSE 2006 (10th International Conference on Plasma Surface Engineering) CY - Garmisch-Partenkirchen, Germany DA - 2006-09-10 PY - 2006 AN - OPUS4-12461 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eberstein, Markus T1 - Sinterkinetik von Glasmatrix-Kompositen mit reaktiver Dispersphase T2 - 80. Glastechnische Tagung und 8th Int. Conference "Advances in Fusion and Processing of Glass" CY - Dresden, Germany DA - 2006-06-12 PY - 2006 AN - OPUS4-12416 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - Hydrogen-containing amorphous carbon layers as optical materials for the NIR and MIR spectral range T2 - Plasma Surface Engineering (PSE 2006) CY - Garmisch-Partenkirchen, Germany DA - 2006-09-11 PY - 2006 AN - OPUS4-12468 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Swart, Claudia T1 - Bestimmung von Arsenspezies in Grundwasser T2 - Jahrestagung 2006 der GDCh-Fachgruppe "Umweltchemie und Ökotoxikologie" CY - Halle (Saale), Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-12472 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Investigations on freon-assisted atomization of refractory analytes (Cr, Mo, Ti, V) in multielement ET AAS T2 - VII European Furnace Symposium on Atomic Absorption Spectrometry, Electrothermal Vaporization and Atomization (VII EFS) and XII Solid Sampling Colloquium with Atomic Spectrometry (XII SSC) CY - Saint Petersburg, Russia DA - 2006-07-02 PY - 2006 AN - OPUS4-12477 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Entwicklung eines Prüfstandes zur Kennzeichnung des Alterungsverhaltens von Fugenfüllsystemen T2 - Präsentation zur BAM-SENBAUWOHN-Fachtagung, "Sonderkapitel des Brücken- und Ingenieurbaus" 2003 CY - Berlin, Germany DA - 2003-10-21 PY - 2003 AN - OPUS4-12456 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs T1 - The micro x-ray flourescence analysis for the analysis of concrete T2 - Nanocem Conference CY - Copenhagen, Denmark DA - 2006-04-25 PY - 2006 AN - OPUS4-12457 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Inkjet-Printing von isolierenden Glasschichten T2 - DKG-DGM Jahrestagung CY - Stuttgart, Germany DA - 2006-04-03 PY - 2006 AN - OPUS4-12418 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten T1 - Zellkultivierungsmodule auf Basis keramischer Multilayer T2 - Symposium Hochleistungskeramik (DKG/DGM) CY - Stuttgart, Germany DA - 2006-04-05 PY - 2006 AN - OPUS4-12420 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schiller, Wolfgang Arno T1 - Zero Shrinkage LTCC für Mikrosensoren T2 - DKG Jahrestagung 2006 CY - Stuttgart, Germany DA - 2006-04-03 PY - 2006 AN - OPUS4-12424 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Kontrolle von Aushärtungsverlauf und Aushärtegrad mittels Thermoanalyse - DSC T2 - Rohima - Die deutsche FVK-Messe - Marktplatz Forschung CY - Leipzig, Germany DA - 2006-06-27 PY - 2006 AN - OPUS4-12527 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Korzen, Manfred T1 - Behaviour in fire of thermally restrained compressed steel members - experimental and numerical T2 - 4th International Workshop Structures in Fire- SIF'06 CY - Aveiro, Portugal DA - 2006-05-10 PY - 2006 AN - OPUS4-12565 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Perzl, P. R. T1 - A new DC-Arc with stationary homogeneous magnetic field as stabilized excitation source for OES - first results T2 - VII European Furnace Symposium on Atomic Absorption Spectrometry, Electrothermal Vaporization and Atomization (VII EFS) and XII Solid Sampling Colloquium with Atomic Spectrometry (XII SSC) CY - Saint Petersburg, Russia DA - 2006-07-02 PY - 2006 AN - OPUS4-12566 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Kontrolle von Aushärtungsverlauf und Aushärtegrad mittels dynamisch mechanischer Analyse und Ultraschall T2 - Rohima - Die deutsche FVK-Messe - Marktplatz Forschung CY - Leipzig, Germany DA - 2006-06-27 PY - 2006 AN - OPUS4-12528 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Kontrolle des Aushärtungsverlaufs im Werkzeug mit Hilfe von Ultraschall T2 - Rohima - Die deutsche FVK-Messe, Marktplatz Forschung CY - Leipzig, Germany DA - 2006-06-27 PY - 2006 AN - OPUS4-12535 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dreßler, Martin T1 - Alumina coatings on Ni-base superalloy T2 - Junior-DGM-Tag CY - Berlin, Germany DA - 2006-06-07 PY - 2006 AN - OPUS4-12488 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - Haftung vopn Korund-Schichten auf Inconel 617 T2 - Symposium Hochleistungskeramik 2006 (DGM/DKG) CY - Stuttgart, Germany DA - 2006-04-05 PY - 2006 AN - OPUS4-12489 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nofz, Marianne T1 - Alumosole zur Schichtherstellung T2 - 80. Glastechnische Tagung CY - Dresden, Germany DA - 2006-06-12 PY - 2006 AN - OPUS4-12490 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Analysis of weathering effects in automotive coatings by thermoluminescence T2 - XXVIIIth FATIPEC Congress CY - Budapest, Hungary DA - 2006-06-12 PY - 2006 AN - OPUS4-12548 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Screening the weathering stability of automotive coatings by chemiluminescence T2 - XXVIIIth FATIPEC Congress CY - Budapest, Hungary DA - 2006-06-12 PY - 2006 AN - OPUS4-12549 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wurster, R. T1 - Characterization of laser generated microparticles by means of a dust monitor and SEM imaging T2 - Conference on Laser Optics, Workshop "Lasers in the Preservation of Cultural Heritage" CY - Saint Petersburg, Russia DA - 2006-06-26 PY - 2006 AN - OPUS4-12554 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niebergall, Ute T1 - Full Notch Creep Test - ISO Round Robin Test T2 - Plastics Pipes XIII CY - Washington, D.C., USA DA - 2006-10-02 PY - 2006 AN - OPUS4-12642 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tessaro, Ute T1 - Ultrasonic testing of railway axles from a bore hole in axial direction T2 - 9th European Conference on Non-Destructive Testing (ECNDT) CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-12635 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Girard-Lauriault, P.-L. T1 - Novel atmospheric pressure deposition of N-Rich plasma polymers for tissue engineering T2 - Gordon Research Conference on Plasma Processing Science CY - South Hadley, MA, USA DA - 2006-07-16 PY - 2006 AN - OPUS4-12603 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Peplinski, Burkhard T1 - X-ray powder diffraction investigation of ternary alloys in the Au-Cu-Sn system T2 - 3rd European Powder Diffraction Conference (EPDIC-3) CY - Vienna, Austria DA - 1993-09-25 PY - 1993 AN - OPUS4-12612 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Peplinski, Burkhard T1 - Phase selective chemical analysis of multi-component solids by X-ray powder diffraction - On the composition of cordierite-like solid solutions crystallizing from non-stoichiometric glasses T2 - 5th European Powder Diffraction Conference (EPIDC-5) CY - Parma, Italy DA - 1997-05-25 PY - 1997 AN - OPUS4-12613 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Peplinski, Burkhard T1 - Proficiency testing of instruments - a key element for quality assurance in X-ray powder diffraction - Part 1: Matching the effort to the actual needs T2 - 6th European Powder Diffraction Conference (EPIDC-6) CY - Budapest, Hungary DA - 1998-08-22 PY - 1998 AN - OPUS4-12614 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Peplinski, Burkhard T1 - Certification of the phase composition of a BAM reference material by an interlaboratory comparison applying X-ray and neutron diffraction T2 - EuraChem/EuroLab symposium "Reference materials for technologies in the new millenium" CY - Berlin, Germany DA - 2000-05-22 PY - 2000 AN - OPUS4-12615 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Brita T1 - Sintering and crystallization of amorphous cordierite powders prepared by sol-gel technique T2 - 11th Conference on Glass and Ceramics CY - Varna, Bulgaria DA - 1993-10-21 PY - 1993 AN - OPUS4-12616 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maneck, Heinz-Eberhard T1 - Plasmachemical modification of graphite particles and their electrochemical behavior T2 - International Battery Association - Battery and Fuel Cell Materials Symposium (IBA 2004) CY - Graz, Austria DA - 2004-04-18 PY - 2004 AN - OPUS4-12617 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maneck, Heinz-Eberhard T1 - Surface modification and spheroidization of graphite particles using thermal RF plasma T2 - Carbon '04 CY - Providence, RI, USA DA - 2004-07-11 PY - 2004 AN - OPUS4-12618 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maneck, Heinz-Eberhard T1 - Thermal RF induction plasma for the modification of graphite T2 - Carbon '06, The International Carbon Conference CY - Aberdeen, Scotland DA - 2006-07-16 PY - 2006 AN - OPUS4-12619 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Peplinski, Burkhard T1 - Improved X-ray powder diffraction data for the disordered eta-Cu6Sn5 alloy phase T2 - 4th European Powder Diffraction Conference (EPDIC-4) CY - Chester, England DA - 1995-07-10 PY - 1995 AN - OPUS4-12621 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Peplinski, Burkhard T1 - An X-ray powder diffraction investigation of a fine-grained synthetic alpha-cordierite powder T2 - 6th European Powder Diffraction Conference (EPDIC-6) CY - Budapest, Hungary DA - 1998-08-22 PY - 1998 AN - OPUS4-12622 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bras, A. T1 - Dielectric study of a nematic liquid crystal: from the bulk to the confined state T2 - 9th International Conference on Dielectric & Related Phenomena CY - Poznan, Poland DA - 2006-09-03 PY - 2006 AN - OPUS4-12624 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schendler, Thomas T1 - Vermeidung von Explosionsgefahren bei zerfallsfähigen Gasen T2 - Jahrestreffen 1991 der Verfahrensingenieure CY - Cologne, Germany DA - 1991-09-25 PY - 1991 AN - OPUS4-12693 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schendler, Thomas T1 - Preventing Explosion Hazards of Decomposable Gases T2 - 7. International Symposium on Loss Prevention and Safety Promotion in the Process Industries CY - Taormina, Italy DA - 1992-05-04 PY - 1992 AN - OPUS4-12694 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Ringversuch zur Bestimmung von LHKW in Grundwasser T2 - GDCh Tagung CY - Halle (Saale), Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-12685 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Bestimmung der ausblasbaren Schwefelkomponenten (POS) in belastetem Grundwasser T2 - GDCh Tagung CY - Halle (Saale), Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-12686 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stegemann, Bert T1 - Towards a consistent approach in probing nanoscale forces by spherical probe AFM T2 - 4th International Workshop "Scanning probe Microscopy in Life Sciences", JPK Instruments AG CY - Berlin, Germany DA - 2005-10-13 PY - 2005 AN - OPUS4-11007 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Much, H. T1 - Characterization of Polymers using Supercritical Fluid Chromatography (SFC) T2 - International GPC Symposium '94 CY - Lake Buena Vista, FL, USA DA - 1994-06-05 PY - 1994 AN - OPUS4-11104 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Keidel, Frank T1 - Characterization of linear, mono- and bicyclic methylsiloxanes by GC/MS and cryo-GC/FTIR T2 - InCom '95 CY - Düsseldorf, Germany DA - 1995-03-20 PY - 1995 AN - OPUS4-11107 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Käppler, K. T1 - SFC-MS and GC-MS identification of differently functionalized siloxanes T2 - 17th International Symposium on Capillary Chromatography and Electrophoresis CY - Wintergreen, VA, USA DA - 1995-05-07 PY - 1995 AN - OPUS4-11110 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Keidel, Frank T1 - Untersuchungen von Ozonreaktionen an Squalen als Modellsubstanz mittels MALDI/MS, GC/MS und GC/FTIR T2 - Analytica CY - Munich, Germany DA - 1996-04-23 PY - 1996 AN - OPUS4-11121 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mellor, F. T1 - Investigations of ozone reactions with squalene as a model substance using hyphenated chromatographic techniques T2 - HTC 4 CY - Bruges, Belgium DA - 1996-02-07 PY - 1996 AN - OPUS4-11123 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hasenstab, Andreas T1 - Air coupled Ultrasound and Ultrasound Echo Technique at Wood T2 - 14th International Symposium on Nondestructive Testing of Wood CY - Eberswalde, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-11236 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Novak, Pavel T1 - Special Aspects of Stress Analysis of 700 bar-Hydrogen Storage Cylinders T2 - 2nd European Hydrogen Energy Conference 2nd professional Meetin on Hydrogen and Fuel Cells CY - Zaragoza, Spain DA - 2005-11-22 PY - 2005 AN - OPUS4-11303 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heller, Winfried T1 - Arbeitsgruppe "Tanksicherheit; Mechanische und Thermische Untersuchungen" T2 - Transport und Logistik, Neue Messe CY - Munich, Germany DA - 2005-05-31 PY - 2005 AN - OPUS4-11304 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Röllig, Mathias T1 - Quantitative Untersuchung von Fehlstellen in Beton mit der Impuls-Thermografie und der Puls-Phasen-Thermografie T2 - Thermografie-Kolloquium der Deutschen Gesellschaft für Zerstörungsfreie Prüfung (DGZfP) CY - Stuttgart, Germany DA - 2005-09-22 PY - 2005 AN - OPUS4-11292 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Golze, Manfred T1 - Application of the EU Drinking Water Directive in PT T2 - 5th Workshop Proficiency Testing in Analytical Chemistry, Microbiology and Laboratory Medicine - Current Practice and Future Directions CY - Portorož, Slovenia DA - 2005-09-26 PY - 2005 AN - OPUS4-11359 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hasenstab, Andreas T1 - Luftultraschall und Ultraschall-Echo-Technik an Holz T2 - Jahrestagung der Deutschen Gesellschaft für Zerstörungsfreie Prüfung (DGZfP) 2005 CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-11371 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hasenstab, Andreas T1 - Niederfrequente Ultraschall-Echo-Verfahren und Bohrwiderstandsmessung zur Bauteiluntersuchung T2 - Jahrestagung der Deutschen Gesellschaft für Zerstörungsfreie Prüfung (DGZfP) 2005 CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-11372 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Trappe, Volker T1 - Life cycle of FRP-components due to in-service loading T2 - Aerospace Testing, Expo 2005 CY - Hamburg, Germany DA - 2005-04-06 PY - 2005 AN - OPUS4-11386 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Trappe, Volker T1 - Life cycle of FRP-components due to in-service loading T2 - Branchenkonferenz der Luft- und Raumfahrt CY - Cottbus, Germany DA - 2005-09-06 PY - 2005 AN - OPUS4-11387 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Trappe, Volker T1 - Determination of inter-fibre-failure in complex, reinforced composites T2 - Aerospace Testing Expo 2005 CY - Hamburg, Germany DA - 2005-04-06 PY - 2005 AN - OPUS4-11388 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina T1 - Reliability Tests for Demining T2 - International Symposium 2005: Use and Testing of Demining Machines CY - Sibenik, Croatia DA - 2005-04-25 PY - 2005 N1 - Geburtsname von Rosenthal, Martina: Scharmach, M. - Birth name of Rosenthal, Martina: Scharmach, M. AN - OPUS4-11391 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hasenstab, Andreas T1 - Mobile X-Ray Inspection for Detection Wood Damages T2 - 14th International Symposium on Nondestructive Testing of Wood CY - Hanover, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-11395 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - Nanoskalige Calciumphosphate, Oberflächenstrukturen und Wechselwirkung mit organischen Molekülen. Was kann die NMR? T2 - Jahrestagung der Deutschen Gesellschaft für Biomaterialien e. V. CY - Würzburg, Germany DA - 2005-10-07 PY - 2005 AN - OPUS4-11505 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael T1 - Vorstellung der Datenbank GEFAHRGUT T2 - 7. Stuttgarter Gefahrguttage CY - Stuttgart, Germany DA - 2005-10-26 PY - 2005 AN - OPUS4-11534 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Optimierung der Nachtemperung von Formteilen mit Hilfe von Thermo- und dynamisch mechanischer Analyse T2 - 8. Internationale Tagung der Arbeitsgemeinschaft Verstärkte Kunststoffe - Technische Vereinigung e. V. (AVK-TV) CY - Baden-Baden, Germany DA - 2005-09-27 PY - 2005 AN - OPUS4-10989 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goering, Harald T1 - Epoxid-Härtung: Mischungsverhältnis und Vernetzungszustand T2 - 8. Internationale Tagung der Arbeitsgemeinschaft Verstärkte Kunststoffe - Technische Vereinigung e. V. (AVK-TV) CY - Baden-Baden, Germany DA - 2005-09-27 PY - 2005 AN - OPUS4-10990 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuchenbecker, Petra T1 - Ergebnisse eines Ringversuchs zur Partikelgrößenbestimmung von Feinstpulvern mittels Lasergranulometrie T2 - Jahrestagung der Deutschen Keramischen Gesellschaft (DKG) 2005 CY - Selb, Germany DA - 2005-10-10 PY - 2005 AN - OPUS4-10992 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Britta T1 - ICP-Sektorfeld-MS zur Bestimmung von Elementspuren in Reinstmetallen T2 - Canas CY - Freiberg, Germany DA - 2005-03-06 PY - 2005 AN - OPUS4-10970 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Artner, J. T1 - Novel Phosphorus-Containing, Flame Retardant Epoxy Resin Hardeners T2 - 10th European Meeting on Fire Retardancy and Protection of Materials (10th European Conference on Fire Retardant Polymers), FRPM '05, Bam, Berlin CY - Berlin, Germany DA - 2005-09-07 PY - 2005 AN - OPUS4-10972 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, T. T1 - Investigation of the Flame Retardation Mechanism in Novel Phosphorous-Containing Polyethers T2 - 10th European Meeting on Fire Retardancy and Protection of Materials (10th Conference on Fire Retardant Polymers), FRPM '05, BAM, Berlin CY - Berlin, Germany DA - 2005-09-07 PY - 2005 AN - OPUS4-10975 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Eckhard T1 - Concentration and modulus gradients at the interface between an amine-cured epoxy and the thermoplastic PVP T2 - Microscopy Conference 2005 (MC2005) CY - Davos, Switzerland DA - 2005-08-28 PY - 2005 AN - OPUS4-10936 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Bestimmung der ausblasbaren Schwefelkomponenten (POS) in belastetem Grundwasser T2 - IGAS Jahrestagung CY - Berlin, Germany DA - 2005-11-08 PY - 2005 AN - OPUS4-10981 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stelling, Karen T1 - Laser-Plasma-Pulver-Hybridschweißen an Ni-Basis Legierung Alloy 617 (2.4663) in Zwangslagen T2 - Innovationsforum des DVS i m Ramen der Messe "Schweißen und Schneiden" CY - Essen, Germany DA - 2005-09-12 PY - 2005 AN - OPUS4-10918 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stelling, Karen T1 - Development of Modern Filler Materials for Laser Hybrid Welding Processes T2 - Messe "Schweißen und Schneiden", Stand Böhler Thyssen CY - Essen, Germany DA - 2005-09-12 PY - 2005 AN - OPUS4-10919 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stelling, Karen T1 - Laser-Plasma-Pulver-Hybridschweißen T2 - Innovationsforum des DVS, im Rahmen der Messe "Schweißen und Schneiden" CY - Essen, Germany DA - 2005-09-12 PY - 2005 AN - OPUS4-10920 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stelling, Karen T1 - Erstarrungsverhalten und Schweißeignung austenitischer Stähle beim Laser- und Hybridschweißen T2 - Innovationsforum vom DVS, im Rahmen der Messe "Schweißen und Schneiden" CY - Essen, Germany DA - 2005-09-12 PY - 2005 AN - OPUS4-10921 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Binkowski, Sigrid T1 - Ungewöhnliche Aufhärtung des 100Cr6 in einem ausgefallenen Keramik-Hybrid-Wälzlager T2 - 39. Metallographietagung 2005 CY - Erlangen, Germany DA - 2005-09-14 PY - 2005 AN - OPUS4-10966 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pasch, H. T1 - Molar Mass and Functionality Type Distribution of Polyether by Supercritical Fluid Chromatography T2 - European Symposium on Analytical SFC and SFE CY - Wiesbaden, Germany DA - 1991-12-04 PY - 1991 AN - OPUS4-11188 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Funktionalitäts- und Molmassencharakterisierung von Siloxanen mit SFC und MALDI/MS T2 - InCom '94, International Symposium on Instrumentalized Analytical Chemistry and Computer Technology CY - Düsseldorf, Germany DA - 1994-03-14 PY - 1994 AN - OPUS4-11191 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - New Possibilities in Characterizing Polymers using Supercritical Fluids T2 - HPLC '95 CY - Innsbruck, Austria DA - 1995-05-28 PY - 1995 AN - OPUS4-11192 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Characterization of Polymers using Supercritical Fluids T2 - The 3rd European Symposium on Analytical SFC and SFE in conjunction with the 6th International Symposium on SFC and SFE CY - Uppsala, Sweden DA - 1995-09-06 PY - 1995 AN - OPUS4-11193 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - SFC and MALDI-MS of siloxane-ethylene oxide copolymers T2 - InCom '96, International Symposium on Instrumentalized Analytical Chemistry and Computer Technology CY - Düsseldorf, Germany DA - 1996-03-25 PY - 1996 AN - OPUS4-11195 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Bewertung und Bereitstellung von oligomeren und polymeren Referenzmaterialien T2 - Analytica '96 CY - Munich, Germany DA - 1996-04-23 PY - 1996 AN - OPUS4-11196 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Molmassencharakterisierung von Siloxanen durch SFC und MALDI/MS T2 - 3. Dresdener Polymertagung CY - Dresden, Germany DA - 1993-09-21 PY - 1993 AN - OPUS4-11151 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wurster, R. T1 - Imaging and mass spectrometry of microparticles generated during surface decontamination of an ancient parcment sample by laser radiation T2 - Konferenz LACONA VI, Laser in Conservation of Artworks CY - Vienna, Austria DA - 2005-09-21 PY - 2005 AN - OPUS4-11155 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Polymere als Schutzschichten T2 - Berliner Polymerentage, BAM CY - Berlin, Germany DA - 1988-10-13 PY - 1988 AN - OPUS4-11140 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - SFC and MALDI-MS (TOF) of oligomer polyethylene oxide adducts T2 - HPLC '93, 17th International Symposium on Column Liquid Chromatography CY - Hamburg, Germany DA - 1993-05-09 PY - 1993 AN - OPUS4-11144 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Determinig Molar Masses using Static Light Scattering - an Interlaboratory Comparison T2 - Wyatt Technology User's Forum 1999 CY - Berlin, Germany DA - 1999-04-29 PY - 1999 AN - OPUS4-11207 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Light Scattering for Characterizing Polymer Reference Materials T2 - LS '99 LData Evaluation in Light Scattering of Polymers CY - Bad Schandau, Germany DA - 1999-10-06 PY - 1999 AN - OPUS4-11208 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scheim, U. T1 - Ceramics by Reaction Pyrolysis T2 - 10. Internationales Symposium für Siliziumorganische Chemie CY - Poznan, Poland DA - 1993-08-15 PY - 1993 AN - OPUS4-11170 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Charakterisierung von Silikonen durch SFC T2 - Berliner Polymerentage 1991 CY - Berlin, Germany DA - 1991-10-09 PY - 1991 AN - OPUS4-11171 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Keidel, Frank T1 - Identifizierung von Siloxanpyrolysaten durch GC/MS und GC/FTIR T2 - InCom '94 CY - Düsseldorf, Germany DA - 1994-03-14 PY - 1994 AN - OPUS4-11172 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mellor, F. T1 - SFE-Applications using a new restrictor design T2 - Analytica CY - Munich, Germany DA - 1994-04-19 PY - 1994 AN - OPUS4-11173 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Simultane Bestimmungen der Funktionalitäts- und Molmassenverteilung von Oligomeren mittels SFC T2 - Berliner Polymerentage 1991 CY - Berlin, Germany DA - 1991-10-09 PY - 1991 AN - OPUS4-11174 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holle, H. T1 - Traditional and laser sleanin methods of historic picture post cards T2 - Konferenz LACONA VI, Laser in Conversation of Artworks CY - Vienna, Austria DA - 2005-09-21 PY - 2005 AN - OPUS4-11157 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Entwicklung von Referenzverfahren T2 - Analytica '96 CY - Munich, Germany DA - 1996-04-23 PY - 1996 AN - OPUS4-11197 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Characterization of siloxane-ethylene oxide copolymers using SFC, MALDI-MS and ESI-MS T2 - 21st International Symposium on Chromatography CY - Stuttgart, Germany DA - 1996-09-15 PY - 1996 AN - OPUS4-11198 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Characterization of polymers using supercritical fluid chromatography T2 - DECHEMA-Diskussionstagung "Neue Methoden der Polymeranalytik" CY - Mainz, Germany DA - 1996-10-07 PY - 1996 AN - OPUS4-11199 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Bestimmungen der Molmassenverteilung von vernetztem PVC mittels Thermischer Field Flow Fractionation T2 - InCom '97 CY - Düsseldorf, Germany DA - 1997-03-17 PY - 1997 AN - OPUS4-11200 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - SFC / API-MS and SFC / FTIR in Analysing Siloxane-Ethylene Oxide Copolymers T2 - HPLC '97 CY - Birmingham, England DA - 1997-06-22 PY - 1997 AN - OPUS4-11201 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Thermal Field Flow Fractionation of Cross-Linked PVC T2 - HPLC '97 CY - Birmingham, England DA - 1997-06-22 PY - 1997 AN - OPUS4-11202 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Oligomere Referenzmaterialien T2 - Analytica '98 CY - Munich, Germany DA - 1998-04-21 PY - 1998 AN - OPUS4-11204 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Polymere Referenzmaterialien T2 - Analytica '98 CY - Munich, Germany DA - 1998-04-21 PY - 1998 AN - OPUS4-11205 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Just, Ulrich T1 - Static Light Scattering of Polystyrene Reference Materials - a BAM Round-Robin Test T2 - 11th International Symposium on Polymer Analysis and Characterization (ISPAC-11) CY - Santa Margherita Ligure, Italy DA - 1998-05-25 PY - 1998 AN - OPUS4-11206 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Untersuchungen zur Nutzung eines kieselsäurehaltigen Filterschlamms als Zusatzstoff für Mörtel und Beton N2 - Der Filterschlamm (FS) fällt als Reststoff bei der Abwasserbehandlung des Chemiewerkes an. Er liegt als feinteiliges Granulat vor und enthält als Hauptbestandteil amorphe Kieselsäure. Damit eröffnet sich die Möglichkeit, ihn wie einen mineralischen Zusatzstoff bei der Beton- und Mörtelherstellung zu verwenden. Als Betonzusatzstoff werden fein aufgeteilte Zusätze zum Beton bezeichnet, die durch chemische und/oder physikalische Wirkung die Betoneigenschaften beeinflussen, und die als Stoffraumkomponente zu berücksichtigen sind. T2 - XII. Workshop der Porotec GmbH über die Charakterisierung von feinteiligen und porösen Festkörpern CY - Bad Soden, Germany DA - 16.11.2004 PY - 2004 AN - OPUS4-11433 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hemmleb, Matthias T1 - Damage detection on building surfaces with multi-spectral techniques T2 - CIPA 2005, XX International Symposium "International Cooperation to save the world´s cultural heritage" CY - Turin, Italy DA - 2005-09-27 PY - 2005 AN - OPUS4-11420 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chun, Hyunjoo T1 - Untersuchung von Poolbränden organischer Peroxide T2 - GVC/DECHEMA-Jahrestagung 2005 CY - Wiesbaden, Germany DA - 2005-09-06 PY - 2005 AN - OPUS4-11460 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malitte, Hans-Joachim A1 - Ewert, Uwe T1 - BAM Reference Films for Calibration of Transmission Densitometers T2 - BAM-DIN Workshop on Image Technology CY - Berlin, Germany DA - 2005-04-18 PY - 2005 AN - OPUS4-11400 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, Jens T1 - Methoden zur Herstellung von analogen ISO/IEC-Prüfvorlagen der ISO/IEC 15775 T2 - DfwG Jahrestagung 2005, BAM CY - Berlin, Germany DA - 2005-10-05 PY - 2005 AN - OPUS4-11405 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, Jens T1 - Production method for analog ISO/IEC-tests charst according to ISO/IEC 15775 T2 - BAM-DIN-Workshop on Image Technology CY - Berlin, Germany DA - 2005-04-19 PY - 2005 AN - OPUS4-11406 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merchel, Silke T1 - Erster internationaler Aluminium-26-Ringversuch: Teil II - Zähllaboratorien T2 - GDCh-Jahrestagung 2005 CY - Düsseldorf, Germany DA - 2005-09-11 PY - 2005 AN - OPUS4-11448 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wagenknecht, Hans T1 - Farb-Management-Methode (CMM) vom Scan zur Druckerausgabe unter Berücksichtigung eines relativen CIELAB Farbraums T2 - DfwG Jahrestagung 2005, BAM CY - Berlin, Germany DA - 2005-10-05 PY - 2005 AN - OPUS4-11412 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Molnarne, Maria T1 - CHEMSAFE - Datenbank für bewertete sicherheitstechnische Kenngrößen T2 - POWTECH (ExploRisk 2005 - Internationale Fachmesse für Explosionschutz und Anlagensicherheit) CY - Nuremberg, Germany DA - 2005-10-11 PY - 2005 AN - OPUS4-11584 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rühe, S. T1 - Wirbelstromhandprüfungen am Schienengleis T2 - DGZfP-Jahrestagung 2005 Zerstörungsfreie Materialprüfung ZfP in Forschung, Entwicklung und Anwendung CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-11620 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartusch, Jürgen T1 - Making Cure Visible T2 - Aerospace Testing 2005 CY - Hamburg, Germany DA - 2005-04-05 PY - 2005 AN - OPUS4-11621 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Achim T1 - Bestimmung von ionen-implantiertem Molybdän in Halbleitersilizium T2 - 20. Seminar Aktivierungsanalyse, TU München/Garching CY - Munich, Germany DA - 2005-02-24 PY - 2005 AN - OPUS4-11623 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Boehm, Rainer T1 - Anwendung von Modellen zur Echohöhenbewertung von Prüfköpfen mit ungewöhnlicher Schwingergeometrie T2 - DGZfP-Jahrestagung 2005 CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-11613 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schultze, Karin T1 - Certified Reference Material "BAM-U007" - Organochlorine Pesticides in Soil T2 - Analytica Conference CY - Munich, Germany DA - 2002-04-23 PY - 2002 AN - OPUS4-11637 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dantan, Nathalie T1 - Faseroptischer pH-Sensor zur Früherkennung korrosionsgefährdender Zustände in Stahlbeton. T2 - 7. Dresdner Sensor-Symposium CY - Dresden, Germany DA - 2005-12-12 PY - 2005 AN - OPUS4-11638 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schultze, Karin T1 - Certified Reference Material "BAM-U007" - Organochlorine Pesticides in Soil T2 - BERM 9 - 9th International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 2003-06-15 PY - 2003 AN - OPUS4-11639 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goebbels, Jürgen T1 - Computed Tomography experiments at BAMline T2 - BESSY User Meeting CY - Berlin, Germany DA - 2005-12-01 PY - 2005 AN - OPUS4-11649 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dantan, Nathalie T1 - Entwicklung eines faseroptischen pH-Sensors zur Früherkennung korrosionsgefährender Zustände in Stahlbeton. T2 - Tagung Bauchemie CY - Berlin, Germany DA - 2005-09-29 PY - 2005 AN - OPUS4-11734 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Martin T1 - Bestimmung von Ochratoxin A in Wein mittels LC-MS/MS nach kombiniertem Anionenaustauscher/Reversed Phase clean up T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-11716 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Segebade, Christian T1 - Zerstörungsfreie Materialanalyse bei der Wiederaufbereitung von photovoltaischen Elementen T2 - DGZfP Jahrestagung CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-11703 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hentschel, Manfred P. T1 - X-Ray Refraction Techniques T2 - Bruker AXS B.V. Invited Lecture CY - Delft, Netherlands DA - 2005-08-17 PY - 2005 AN - OPUS4-11747 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hentschel, Manfred P. T1 - 3D Synchrotron Refraction Computed Tomography T2 - Aerospace Testing EXPO 2005, BAM Messestand CY - Hamburg, Germany DA - 2005-04-05 PY - 2005 AN - OPUS4-11749 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eberstein, Markus T1 - Sinterung von Glas/Kristallphasen-Kompositen T2 - DGM/DKG Symposium Hochleistungskeramik CY - Selb, Germany DA - 2005-10-12 PY - 2005 AN - OPUS4-11750 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thiel, A. T1 - Viscosity of sintering glass-matrix composites T2 - 3rd International Symposium on Non-Crystlline Solids / 7th Brazilian Symposium on Glass and Related Materials CY - Maringá, Brazil DA - 2005-11-13 PY - 2005 AN - OPUS4-11752 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Online-Aushärtungskontrolle im Werkzeug - Messprinzip und industrielle Anwendungsbeispiele T2 - 9. Internationale AVK (Arbeitsgemeinschaft verstärkte Kunststoffe) Tagung CY - Essen, Germany DA - 2006-09-19 PY - 2006 AN - OPUS4-13039 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Amino functionalization of polymers by low-pressure plasma processing - status and perspectives T2 - Tenth International Conference on Plasma Surface Engineering CY - Garmisch-Partenkirchen, Germany DA - 2006-09-11 PY - 2006 AN - OPUS4-13040 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malitte, Hans-Joachim T1 - BAM Reference films for calibration of transmission densitometers T2 - 9 th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-13081 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sölter, B. T1 - New regulations in the area of german industrial radiography - to many or to little regulations for the practice T2 - 9 th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-13083 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Surface chemical characterization of plasma-polymerized organic films: State-of-the-art and shortcomings T2 - 10th International Conference on Plasma Surface Engineering CY - Garmisch-Partenkirchen, Germany DA - 2006-09-10 PY - 2006 AN - OPUS4-13062 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wirth, Thomas T1 - Surface analysis of dental enamel by TOF-SIMS, SEM and TEM T2 - SIMS EUROPE 2006 CY - Münster, Germany DA - 2006-09-24 PY - 2006 AN - OPUS4-13190 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Arndt, Ralf T1 - Quantitative pulse-phase-thermography for masonry and concrete structures T2 - 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-13193 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rikowski, Eckhard A1 - Adam, Karin A1 - Torge, Manfred T1 - Glass disease - special corrosion phenomena T2 - International Workshop "Non-destructive analysis and testing of museum objects", Intercollege CY - Nicosia, Cyprus DA - 2006-05-18 PY - 2006 AN - OPUS4-13238 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang T1 - Classification of OSB emissions assessed with a German evaluation scheme T2 - 8th international Conference on Healthy Buildings 2006 CY - Lisbon, Portugal DA - 2006-06-04 PY - 2006 AN - OPUS4-13232 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Investigation of curing of epoxy resin composite materials by dynamic mechanical analysis (DMA) T2 - Polydays 2006 CY - Berlin, Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-13447 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nöther, Nils T1 - Sensorbasierte Geotextilien zur Deichertüchtigung T2 - RIMAX-Workshop für Nachwuchswissenschaftler CY - Dresden, Germany DA - 2006-10-10 PY - 2006 AN - OPUS4-13515 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Swart, Claudia T1 - Spurenanalyse von historischen Proben mit ICP-MS T2 - Workshop zur Gründung eines Nationalen Netzwerks zur Kulturguterhaltung CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-13482 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich T1 - Microwave induced plasma spectrometry (MIP) as detector for carrier gas hot extraction (CGHE) T2 - Winterconference on Plasmaspectrochemistry 2007 CY - Taormina, Italy DA - 2007-02-18 PY - 2007 AN - OPUS4-13498 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Bernd T1 - Sicherheit in Arbeitswelt und Verkehr T2 - Tag der offenen Tür im DIN CY - Berlin, Germany DA - 2006-10-14 PY - 2006 AN - OPUS4-13501 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hölck, Ole T1 - Gas induced structural changes in polymeric membrane materials combining experiment, phenomenological models and simulation T2 - Euromembranes CY - Taormina, Italy DA - 2006-09-24 PY - 2006 AN - OPUS4-13502 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fichera, Mario Augusto T1 - NMR investigation of a solid intermediate reaction product of heat treated flame retardant HIPS/ Mg(OH)2/ Pr system T2 - "Principles and Novel Applications of Modem Magnetic Resonance Methods" 28. Diskussionstagung der GDCh-Fachgruppe Magnetische Resonanzspektroskopie CY - Tübingen, Germany DA - 2006-09-26 PY - 2006 AN - OPUS4-13807 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich T1 - Reinheitsbestimmung von Kupfer mit der Glimmentladungs-Massenspektrometrie (GDMS) - auf dem Weg zu rückgeführten Messwerten T2 - 16. Jahrescolloquium Interessengemeinschaft Atomspektroskopie Berlin (IGAS) CY - Berlin, Germany DA - 2006-11-08 PY - 2006 AN - OPUS4-13773 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Britta T1 - ICP-Sektorfeld-MS zur Bestimmung von Elementspuren in Reinstmetallen T2 - IGAS CY - Berlin, Germany DA - 2006-11-08 PY - 2006 AN - OPUS4-13774 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Swart, Claudia T1 - Bestimmung von Arsenspezies in Grundwasser T2 - 16. Jahreskolloquium der Interessengemeinschaft Atomspektroskopie (IGAS) CY - Berlin, Germany DA - 2006-11-08 PY - 2006 AN - OPUS4-13775 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schallert, Matthias T1 - Faseroptisches Mikrodistometer für die zuverlässige statische und dynamische Beanspruchungsanalyse von Pfahlgründungen T2 - Baugrundtagung CY - Bremen, Germany DA - 2006-09-27 PY - 2006 AN - OPUS4-13821 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dreßler, Martin T1 - Ceramic bond coats T2 - JuniorEuroMat CY - Lausanne, Switzerland DA - 2006-09-04 PY - 2006 AN - OPUS4-13727 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Methoden und Phänomene der Gebäudedynamik - Baugrund-, Fundament- und Deckenschwingungen T2 - VDI-Tagung "Baudynamik" CY - Kassel, Germany DA - 2006-05-17 PY - 2006 AN - OPUS4-13747 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chun, Hyunjoo T1 - Experimental investigation and CFD study of di-tert-butyl peroxide pool fires T2 - 31st International Symposium on Combustion CY - Heidelberg, Germany DA - 2006-08-06 PY - 2006 AN - OPUS4-13861 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bras, A. T1 - Molecular dynamics of a nematic liquid crystal impreganted in a nanoporous membrane T2 - 20. Tagung der Portugiesischen Chemischen Gesellschaft CY - Lisbon, Portugal DA - 2006-12-14 PY - 2006 AN - OPUS4-13903 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Segebade, Christian A1 - Hedrich, Martina T1 - Non - destructive process control T2 - 9. ECNDT 2006 CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-13878 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Polymers confined to nanoporous glasses investigated by quasielastic and inelastic neutron scattering T2 - Soft Matter User Meeting CY - Grenoble, France DA - 2006-11-22 PY - 2006 AN - OPUS4-13881 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bremser, Wolfram T1 - The European reference materials initiative T2 - International Conference on Biological an Environmental Reference Materials - BERM10 CY - Charleston, SC, USA DA - 2006-04-30 PY - 2006 AN - OPUS4-14030 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hemmleb, Matthias T1 - Schadensdiagnose an Bauwerksoberflächen mit multispektralen Methoden T2 - Bauwerksdiagnose 2006 CY - Berlin, Germany DA - 2006-02-23 PY - 2006 AN - OPUS4-14082 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hasenstab, Andreas T1 - Ultraschall-Echo-Technik zur Ortung von Minderdicken und Schäden in Holzbauteilen T2 - Bauwerksdiagnose 2006 CY - Berlin, Germany DA - 2006-02-23 PY - 2006 AN - OPUS4-14084 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckmann, Jörg T1 - Time domain spectroscopy techniques for non destructive contact less flaw detection and imaging in advanced materials T2 - ECNDT Berlin 2006, 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-14159 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wachtendorf, Volker T1 - Spectral sensitivity of polymer ageing T2 - 4th International Symposium on Service Life Prediction CY - Key Largo, FL, USA DA - 2006-12-03 PY - 2006 AN - OPUS4-14144 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - MgF2 moderate temperature sol-gel deposition for optical UV-applications T2 - BESSY Usertreffen CY - Berlin, Germany DA - 2006-12-07 PY - 2006 AN - OPUS4-14221 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kolarek, Martina T1 - EcoMat.net - Comprehensive knowledge management for materials made of renewable resources T2 - 6th International wood and Natural Fibre Composite Symposium CY - Kassel, Germany DA - 2006-04-05 PY - 2006 AN - OPUS4-14253 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinholz, U. T1 - Kalk-Natron-Glas mit zertifizierter H2O-Konzentration T2 - 80. Glastechnische Tagung und 8th Int. Conference "Advances in Fusion and Processing of Glass" CY - Dresden, Germany DA - 2006-06-12 PY - 2006 AN - OPUS4-14257 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Martin, Tina T1 - Spektral induzierte Polarisation an stehenden Bäumen T2 - 1. Symposium Impedanzspektroskopie, Grundlagen und Anwendungen CY - Essen, Germany DA - 2006-05-16 PY - 2006 AN - OPUS4-14246 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maierhofer, Christiane T1 - Structural assessment with radar and active thermography T2 - Cultural Heritage Conference, Heritage Protection Construction Aspects CY - Dubrovnik, Croatia DA - 2006-10-14 PY - 2006 AN - OPUS4-14318 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wehr, A. T1 - Multi-spectral laser scanning for inspection of building surfaces - State of the art and future concepts T2 - 7th International Symposium on Virtual Reality, Archaeology and Cultural Heritage VAST 2006 CY - Nicosia, Cyprus DA - 2006-10-30 PY - 2006 AN - OPUS4-14320 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Konchina, V. T1 - Application of ISO 5725-5725-6 for the validation of ultrasonic testing T2 - ECNDT 2006 9. Europäische Konferenz für Zerstörungsfreie Prüfung CY - Berlin, Germany DA - 2006-09-25 PY - 2006 N1 - Geburtsname von Rosenthal, Martina: Scharmach, M. - Birth name of Rosenthal, Martina: Scharmach, M. AN - OPUS4-14321 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Henrichsen Hartmann, Henrik T1 - Organic crystalline nanofibers; Manipulation, integration and electrical characterization T2 - 2006 MRS Fall Meeting (Materials Research Society) CY - Boston, MA, USA DA - 2006-11-27 PY - 2006 AN - OPUS4-14305 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Arsen- und Quecksilberspezies in Fisch T2 - 4. Conference über Ionenanalyse, Technische Universität Berlin CY - Berlin, Germany DA - 2007-03-12 PY - 2007 AN - OPUS4-14307 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Entwicklung eines LAS-Kalibrierstandards T2 - 4. Conference über Ionenanalyse CY - Berlin, Germany DA - 2007-03-12 PY - 2007 AN - OPUS4-14308 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Treat detection technologies covering an extended range of eventualities T2 - ECNDT 2006 9. Europäische Konferenz für Zerstörungsfreie Prüfung CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-14312 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hemmleb, M. T1 - Multi-spectral data acquisition and processing techniques for damage detection on building surfaces T2 - ISPRS Commission V Symposium, Image Engineering and Vision Metrology CY - Dresden, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-14317 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Threat detection technologies covering an extended range of eventualities T2 - 9th European Conference on NDT, ECNDT Berlin 2006 CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-14534 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckmann, Jörg T1 - Röntgenographische Charakterisierung des oxidativen Schädigungsverhaltens infiltrierter faserverstärker 2D-C/C-Keramiken T2 - Frühjahrstagung des Arbeitskreises Kohlenstoff (AKK) Der Deutschen Keramischen Gesellschaft e.V. (DKG) Uni Kassel CY - Kassel, Germany DA - 2006-05-05 PY - 2006 AN - OPUS4-14537 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epishin, Alexander T1 - Microstructual stability of CMSX-4 and CMSX-10 under high temperature creep conditions T2 - 8th Liege Conference on Materials for Advanced Power Engeneering CY - Liège, Belgium DA - 2006-09-18 PY - 2006 AN - OPUS4-14481 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epishin, Alexander T1 - The effect of high temperature creep damage on low cycle fatigue in CMSX-4 T2 - 8th Liege Conference on Materials für Advanced Power Engeneering CY - Liège, Belgium DA - 2006-09-18 PY - 2006 AN - OPUS4-14482 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Bestimmung extrem leicht flüchtiger Komponenten in Grundwasser T2 - GDCh-Tagung, Wasserchemische Gesellschaft CY - Passau, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-14483 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Cismak, A. T1 - A SEM and TOF-SIMS study of CaF-like precipitates after in vitro and in situ fluoridation T2 - 53rd Annual ORCA Congress 2006 CY - Glasgow, Scotland DA - 2006-07-05 PY - 2006 AN - OPUS4-14485 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Schwefel, Autofahren und Analytik T2 - 39. Diskussionstagung der Deutschen Gesellschaft für Massenspekrometrie CY - Mainz, Germany DA - 2006-03-05 PY - 2006 AN - OPUS4-14557 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Swart, Claudia T1 - Bestimmung von Arsenspezies in Grundwasser und Fischmatrix T2 - CANAS '07, Colloquium Analytische Atomspektroskopie CY - Konstanz, Germany DA - 2007-03-19 PY - 2007 AN - OPUS4-14638 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riebe, Gundel T1 - Bestimmung von Platin in Autokatalysatoren mit massenspektrometrischer Isotopenverdünnungsanalyse T2 - 39. Diskussionstagung der Deutschen Gesellschaft für Massenspekrometrie CY - Mainz, Germany DA - 2006-03-05 PY - 2006 AN - OPUS4-14559 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wosniok, Aleksander T1 - Dyke monitoring using fiber sensor-based geosynthetics N2 - Dyke breaks - caused by e.g. Overflows or Slop breaks during long lasting high water gauge - Play a great role in a failure potential of extreme flood Events. Using conventional dyke condition Monitoring dyke messengers can undertake only a visual surface inspection. Thus defective Areas can oftentimes be discovered too late. A critical area in which failures due to soil displacement and moisture Penetration become more significant is located at a landside dyke foot. Geotextiles are integrated here as a Drainage in case of modern three-zone type of dyke. T2 - European Symposium on Flood Risk Management Research (EFRM 2007) CY - Dresden, Germany DA - 26.02.2007 PY - 2007 AN - OPUS4-14571 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - A new sub-lithographic strip pattern for the standardised determination of lateral resolution in the nanometer range T2 - European Standardisation Conference CY - Berlin, Germany DA - 2007-03-26 PY - 2007 AN - OPUS4-14574 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baytekin, H. Tarik T1 - Investigation of wettability of surface modified polymer wafers and hot embossed wafers used in micro fluidic device fabrication T2 - Plasmatechnologietagung (PT 13), DGPT (Deutsche Gesellschaft für Plasmatechnologie) CY - Bochum, Germany DA - 2007-03-05 PY - 2007 AN - OPUS4-14575 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tzschichholz, Grit T1 - Poröse Nanokompositmaterialien mit spezifischen infrarot-optischen Eigenschaften T2 - Jahrestagung der DKG; Symposium Hochleistungskeramik CY - Dresden, Germany DA - 2007-03-19 PY - 2007 AN - OPUS4-14579 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Chemische Sensoren für die technische Sicherheit T2 - µ-sys Berlin (Mikrosystemtechnik) CY - Berlin, Germany DA - 2007-03-07 PY - 2007 AN - OPUS4-14586 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Bestimmung toxikologisch relevanter Schwermetall-Spezies in Fisch T2 - 36. Deutscher Lebensmittelchemikertag 2007 CY - Nuremberg, Germany DA - 2007-09-10 PY - 2007 AN - OPUS4-14605 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Dielectric and neutron spectroscopy on nano-confined liquid crystals T2 - Jahrestagung der Deutschen Physikalischen Gesellschaft, AK Chemische Physik/Polymerphysik CY - Regensburg, Germany DA - 2007-03-26 PY - 2007 AN - OPUS4-14590 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Molecular dynamics in glass-forming liquid crystal as studied by broadband dielectric and thermal spectroscopy T2 - Jahrestagung der Deutschen Physikalischen Gesellschaft, AK Chemische Physik/Polymerphysik CY - Regensburg, Germany DA - 2007-03-26 PY - 2007 AN - OPUS4-14592 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Glitzky, Carsten T1 - Grenzschichtreaktionen in multifunktionalen LTCC-Modulen T2 - Jahrestagung der Deutschen Keramischen Gesellschaft / Symposium Hochleistungskeramik CY - Dresden, Germany DA - 2007-03-19 PY - 2007 AN - OPUS4-14628 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naghib Zadeh, Hamid T1 - LTCC-kompatible Kondensatorwerkstoffe T2 - Jahrestagung der Deutschen Keramischen Gesellschaft / Symposium Hochleistungskeramik CY - Dresden, Germany DA - 2007-03-19 PY - 2007 AN - OPUS4-14630 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Achim T1 - Nitrogen determination in boron carbide by INAA and gas fusion analysis T2 - 21. Seminar Aktivierungsanalyse und Gammaspektroskopie (SAAGAS 21) CY - Mainz, Germany DA - 2007-03-21 PY - 2007 AN - OPUS4-14637 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Renate A1 - Weise, Frank A1 - Pirskawetz, Stephan T1 - Numerische Simulation von Heat-Island-Phänomenen an innerstädtischen Straßenbelägen in Nagoya - Arbeitsweise des Simulationsprogramms T2 - Hannover-Messe 2007 (PST-Fraunhofer Patentstelle für die Deutsche Forschung) CY - Hanover, Germany DA - 16.04.2007 PY - 2007 AN - OPUS4-14672 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schiel, D. T1 - EUROMET - Project for developing and providing traceability for Europe-wide comparable measuring results in water monitoring T2 - Water Status Monitoring under the WFD Conference CY - Lille, France DA - 2007-03-12 PY - 2007 AN - OPUS4-14676 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Sebastian T1 - Certification of Pt, Pd and Rh in a used car catalyst reference material T2 - EuroAnalysis XIV CY - Antwerp, Belgium DA - 2007-09-09 PY - 2007 AN - OPUS4-14677 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ostermann, Markus T1 - Measurements of C, N and O using RPAA - often a perfect alternative T2 - 21. Seminar Aktivierungsanlayse und Gammaspektrometrie (SAAGAS 21) CY - Mainz, Germany DA - 2007-03-21 PY - 2007 AN - OPUS4-14679 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weise, Frank T1 - Innovative asphalt pavement for the mitigation of urban heat-island phenomena in Japan T2 - Hannover-Messe 2007 CY - Hanover, Germany DA - 2007-04-16 PY - 2007 AN - OPUS4-14652 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Thermal rearrangement of HBCD enantiomers T2 - Conference: Brominated flame retardants 2007 CY - Amsterdam, Netherlands DA - 2007-04-24 PY - 2007 AN - OPUS4-14699 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malz, Frank T1 - Combined structural investigations of bioactive silicate glasses T2 - Bioceramics 20 CY - Nantes, France DA - 2007-10-24 PY - 2007 AN - OPUS4-14701 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Aguiar, H. T1 - Microstructural characterization of bioactive silicate glasses T2 - EUROMAT 2007 CY - Nuremberg, Germany DA - 2007-09-10 PY - 2007 AN - OPUS4-14658 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reid, D. G. T1 - The organic-mineral interface in bone is stabilized by polysaccharides: {31P} - 13C REDOR solid state NMR evidence T2 - Joint ISMRM-ESMRMB Conference 2007 CY - Berlin, Germany DA - 2007-05-19 PY - 2007 AN - OPUS4-14659 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rohde, H. T1 - Investigation of Mo- and W- stannylidyne complexes using Mössbauer spectroscopy T2 - International Conference on the Mössbauer Effect - ICAME 2007 CY - Kanpur, India DA - 2007-10-14 PY - 2007 AN - OPUS4-14664 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Lineare Alkylbenzolsulfonate (LAS) - Die Entwicklung eines Kalibrierstandards T2 - Jahrestagung 2007, Umweltchemie und Ökotoxikologie, Von der Chemodynamik in Ökosystemen zur Stoffbewertung CY - Osnabrück, Germany DA - 2007-09-26 PY - 2007 AN - OPUS4-14817 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fuß, Oliver T1 - Sauerstoffgrenzkonzentrationen von brennbaren Gasen und Dämpfen T2 - Dechema Jahrestagung 2002 CY - Wiesbaden, Germany DA - 2002-06-11 PY - 2002 AN - OPUS4-14824 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Molnarne, Maria T1 - Explosion protection by using the database CHEMSAFE T2 - AIChE 2007 Spring National Meeting, 3rd Global Congress on Process Safety, 9th Process Plant Safety Symposium CY - Houston, TX, USA DA - 2007-04-22 PY - 2007 AN - OPUS4-14780 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paulick, Carl T1 - Interface free joining of ceramics in the green state T2 - 2nd International Conference on Characterization and Control of Interfaces (ICCCI) CY - Kurashiki, Japan DA - 2006-09-06 PY - 2006 AN - OPUS4-14743 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meine, Kerstin T1 - Charakterisierung von keramischen Folien und Multilayern mittels Laserprofilometrie und Ultraschallmikroskopie T2 - DKG-Tagung CY - Dresden, Germany DA - 2007-03-19 PY - 2007 AN - OPUS4-14744 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Nanosecond laser damage resistance of optical multimode fibers prepared differently T2 - EMRS 2007 Spring Meeting, Symposium P: Laser synthesis and processing of advanced materials CY - Strasbourg, France DA - 2007-05-28 PY - 2007 AN - OPUS4-14762 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berkei, I. A1 - Torge, Manfred A1 - Adam, K. T1 - Conservation and restoration of historical glass windows - classical glass painting T2 - Traditional Building - Exibition and Conference CY - Boston, MA, USA DA - 2007-03-07 PY - 2007 AN - OPUS4-14839 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred A1 - Kruschke, D. A1 - Berkei, I. T1 - Development of new methods for extremly damaged painted glass of the 19th & 20th century - Examinations on glass color layers T2 - Tradional Building - Exibition and Conference CY - Boston, MA, USA DA - 2007-03-07 PY - 2007 AN - OPUS4-14840 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidemann, Gerd T1 - Untersuchung von faserverstärkten Porenbeton mit Computertomographie T2 - DGZfP Jahrestagung 2007 CY - Fürth, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-14831 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidemann, Gerd T1 - Synchrotron microtomography and 3D image analysis for studying the degradability of biocompatible ceramics within biopsies sampled after sinus floor augmentation T2 - SPIE Photonics West, Bios 2007 CY - San José, CA, USA DA - 2007-01-20 PY - 2007 AN - OPUS4-14833 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaal, Mate T1 - Versuchsplan für Prüfung und Bewertung von Metalldetektoren für die Minenräumung T2 - DGZfP-Jahrestagung 2007 (ZfP in Forschung, Entwicklung und Anwendung) CY - Fürth, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-14834 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina T1 - Reliability for security - offer to complete your project T2 - Europäische -Sicherheitsforschungskonferenz SRC ´07 CY - Berlin, Germany DA - 2007-03-26 PY - 2007 AN - OPUS4-14836 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pawlowski, Kristin A1 - Schartel, Bernhard T1 - Flame retardancy mechanisms of bisphenol A bis(diphenyl phosphate) in polycarbonate/acrylonitrile-butadiene-styrene blends T2 - FRPM07 - 11th European Meeting on Fire Retardant Polymers CY - Bolton, England DA - 2007-07-04 PY - 2007 AN - OPUS4-15000 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - Moderate temperrature sol-gel deposition of fluoride films for optical UV-applications: an ellipsometrc study on homogeneity T2 - International Conference on Spectroscopic Ellipsoemtry CY - Stockholm, Sweden DA - 2007-06-11 PY - 2007 AN - OPUS4-14955 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Nanosecond laser-induced surface damage of preforms and optical multimode fibers T2 - COLA 2007, Conference on Laser Ablation, Guia de Isora CY - Tenerife, Spain DA - 2007-09-24 PY - 2007 AN - OPUS4-14956 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - Certification of reference materials and validation of reference procedures: challenges on ellipsometry T2 - International Conference on Spectroscopic Ellipsoemtry CY - Stockholm, Sweden DA - 2007-06-11 PY - 2007 AN - OPUS4-14957 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völz, Uwe T1 - ZEUS in der Anwendung T2 - DGZfP-Jahrestagung CY - Fürth, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-14985 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frunza, St. T1 - Dynamics of the molecules in the surface layer of aerosil systems with high silica density containing liquid crystals with ester bridge T2 - 9. European Conference on Liquid Crystals CY - Lisbon, Portugal DA - 2007-07-02 PY - 2007 AN - OPUS4-15039 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frunza, S. T1 - Dielectric and neutron spectroscopy on nano-confined liquid crystals T2 - 9. European Conference on Liquid Cristals CY - Lisbon, Portugal DA - 2007-07-02 PY - 2007 AN - OPUS4-15046 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Joshi, Ranjit T1 - Surface modification studies of polypropylene films using underwater capillary discharge T2 - 3rd International Congress on Cold Atmospheric Pressure Plasmas: Sources and Application CY - Ghent, Belgium DA - 2007-07-10 PY - 2007 AN - OPUS4-15047 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - Selection and characterization of ceramic micron- and nanometersized model particles known as potential wear products from artificial hip joints T2 - 10th International Conference of the European Ceramic Society; ECERS 2007 CY - Berlin, Germany DA - 2007-06-17 PY - 2007 AN - OPUS4-15077 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drame, Christian T1 - Deflagrationen von Propan/Luft-Gemischen in geschlossenen Rohrleitungen T2 - ProcessNet Jahrestagung 2007 (Dechema, VDI-GVC) CY - Aachen, Germany DA - 2007-10-16 PY - 2007 AN - OPUS4-15010 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riebe, Gundel T1 - On the problems related to total of chromium determination T2 - Trends in sample preparation CY - Seggauberg, Austria DA - 2007-06-26 PY - 2007 AN - OPUS4-15012 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holzgrabe, U. T1 - ERETIC - a tool for assay determinations in the pharmaceutical analysis by quantitative NMR spectroscopy T2 - European Directorate for the Quality of Medicine and Health Care CY - Strasbourg, France DA - 2007-06-13 PY - 2007 AN - OPUS4-15056 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred T1 - Effects of emissions from materials on stained glass windows T2 - COST-strategic workshop: "Past-Present-Prediction- about simulation techniques, dosimeters,sensors, in conservarion research and application" CY - Ohrid, Macedonia DA - 2007-05-31 PY - 2007 AN - OPUS4-15026 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Birgit T1 - Emissionen flüchtiger organischer Verbindungen aus Bauprodukten T2 - CLIMA 2007 Well Beeings Indoors CY - Helsinki, Finland DA - 2007-06-10 PY - 2007 AN - OPUS4-15030 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hayakawa, S. T1 - Preparation and characterization of boron-containing hydroxyapatites T2 - Bioceramics 20 CY - Nantes, France DA - 2007-10-24 PY - 2007 AN - OPUS4-15058 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Artner, J. T1 - Carbon fibre reinforced epoxy resins flame retarded with novel phosphorus-containing compounds T2 - FRPM07 - 11th European Meeting on Fire Retardant Polymers CY - Bolton, England DA - 2007-07-04 PY - 2007 AN - OPUS4-15059 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Technische Sicherheit mit Multigassensoren T2 - Partnering Event zur Vorstellung des BMBF-Förderprogramms SicherPartnering Event zu den ersten Bekanntmachungen des Sicherheitsforschungsprogramm CY - Bonn, Germany DA - 2007-04-23 PY - 2007 AN - OPUS4-15063 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wohlrab, Sebastian T1 - Sensitive Oberflächen für CBRNE-Gefahrstoffe T2 - 1. Partnering Event zum Sicherheitsforschungsprogramm CY - Bonn, Germany DA - 2007-04-23 PY - 2007 AN - OPUS4-15065 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinholz, Uwe T1 - A thin-layer reference material for hydrogen analysis T2 - 9 th European Conference on Accelerators in Applied Research and Technology, ECAART CY - Florence, Italy DA - 2007-09-03 PY - 2007 AN - OPUS4-15449 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wohlrab, Sebastian T1 - Reaktionen von Zellen auf Nanopartikel T2 - GDCh-Wissenschaftsforum Chemie 2007, Universität Ulm CY - Ulm, Germany DA - 2007-09-16 PY - 2007 AN - OPUS4-15849 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grillet, A. A1 - Witt, Jens T1 - Optical fibre sensors embedded into medical textiles for monitoring ofrespiratory movements in MRI environment T2 - Third European Workshop on Optical Fibre Sensors CY - Naples, Italy DA - 2007-07-04 PY - 2007 AN - OPUS4-15850 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Amino group determination on 4,4'-Methylenebis(2,6-diethylaniline) film surfaces by XPS and NEXAFS applying derivatization reactions T2 - ECASIA'07 CY - Brussels, Belgium DA - 2007-09-10 PY - 2007 AN - OPUS4-15843 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pentzien, Simone T1 - Monitoring of the cleaning process of soiled paper by the investigation of laser-induced microparticles T2 - Lasers in the Conservation of Artworks VII (LACONA VII) CY - Madrid, Spain DA - 2007-09-17 PY - 2007 AN - OPUS4-15844 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ewert, Uwe T1 - Neue Normen zur Digitalen Industriellen Radiologie als Beitrag zur Steigerung der Wirtschaftlichkeit und der technischen Sicherheit industrieller Anlagen in Chemie und Energie T2 - Erster Tag der offenen Tür des DIN CY - Berlin, Germany DA - 2006-10-14 PY - 2006 AN - OPUS4-15847 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, M. T1 - Zellantwort auf selektive UV-Laser-Funktionalisierung von polymeren Oberflächen T2 - BMT 2007 41. Jahrestagung der Deutschen Gesellschaft für Biomedizinische Technik im VDE CY - Aachen, Germany DA - 2007-09-26 PY - 2007 AN - OPUS4-15889 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gildenhaar, Renate T1 - Development of alkali containing calcium phosphate cements T2 - 20th Int. Symposium of Ceramics in Medicine (Bioceramics 20) CY - Nantes, France DA - 2007-10-24 PY - 2007 AN - OPUS4-15862 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Georg T1 - Schnell resorbierbare, offenporige Knochenersatzwerkstoffe auf Basis von Calciumphosphaten T2 - Symposium "Materialforschung für Innovation in der Region Berlin/Brandenburg" CY - Potsdam, Germany DA - 2007-09-27 PY - 2007 AN - OPUS4-15864 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beranic Klopcic, S. T1 - The reactivity of CaTi4(PO4)6 with alumina and Y-TZP ceramics T2 - 20th Int. Symposium of Ceramics in Medicine (Bioceramics 20) CY - Nantes, France DA - 2007-10-24 PY - 2007 AN - OPUS4-15865 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bernstein, A. T1 - Influence of calcium zirconium phosphate coatings on mineralization of bone T2 - 20th Int. Symposium of Ceramics in Medicine (Bioceramics 20) CY - Nantes, France DA - 2007-10-24 PY - 2007 AN - OPUS4-15866 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ploska, Ute T1 - Calcium titanate reaction layers on TiAl6V4 implants T2 - 20th Int. Symposium of Ceramics in Medicine (Bioceramics 20) CY - Nantes, France DA - 2007-10-24 PY - 2007 AN - OPUS4-15867 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten T1 - Keramische Multilayer mit Hohlraumstrukturen T2 - Jahrestagung der DKG und Symposium Hochleistungskeramik CY - Dresden, Germany DA - 2007-03-19 PY - 2007 AN - OPUS4-15871 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tzschichholz, Grit T1 - Porous composite materials from nano-powders with customised radiative transport characteristics T2 - 10th ECerS Conference CY - Berlin, Germany DA - 2007-06-17 PY - 2007 AN - OPUS4-15872 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Bestimmung von extrem leicht flüchtigen Komponenten in Grundwasser T2 - GDCh Jahrestagung CY - Osnabrück, Germany DA - 2007-09-26 PY - 2007 AN - OPUS4-15876 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Quantification of nitrogen-containing functional groups on polymer surfaces by merans of chemical derivatization T2 - Polydays 2006 CY - Berlin, Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-15458 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Strategies fot the evaluation of X-ray photoelectron spectroscopy data after chemical derivatization of surface functional groups T2 - 18th International Symposium on Plasma Chemistry CY - Kyoto, Japan DA - 2007-08-28 PY - 2007 AN - OPUS4-15462 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dörfel, Ilona T1 - Al2O3-coatings after long-term heat treatment - a TEM study T2 - Microscopy Conference 2007 (33. Conference of DGE) CY - Saarbrücken, Germany DA - 2007-09-02 PY - 2007 AN - OPUS4-15490 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nofz, Marianne T1 - High-temperature resistant alumina coatings on Ni-base alloys T2 - EUROMAT 2007 CY - Nuremberg, Germany DA - 2007-09-10 PY - 2007 AN - OPUS4-15492 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckmann, Jörg T1 - Zerstörungsfreie Charakterisierung der oxidativen Schädigung faserverstärkter 2D-C/C-Keramiken mit Hilfe der Refraktions - Topographie T2 - DGZfP-Jahrestagung 2007 CY - Fürth, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-15483 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Axel T1 - Direct iterative reconstruction of computed tomography trajectories: DIRECTT T2 - International Symposium on Digital Industrial Radiology and Computed Tomography (DIR 2007) CY - Lyon, France DA - 2007-06-25 PY - 2007 AN - OPUS4-15478 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Sensor systems for risk detection T2 - 2nd European Summer School on Hydrogen Safety CY - Belfast, Northern Ireland DA - 2007-07-30 PY - 2007 AN - OPUS4-15699 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Graf, Nora T1 - Surface analysis (XPS, ToF-SIMS, NEXAFS) of organosilane functionalized substrates to be used as microarray platforms T2 - Bunsen Discussion Meeting CY - Heidelberg, Germany DA - 2007-06-30 PY - 2007 N1 - Geburtsname von Jagst, Eda: Yegen, E. - Birth name of Jagst, Eda: Yegen, E. AN - OPUS4-15701 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ostermann, Markus T1 - A reliable and quick way to measure low levels of oxygen, nitrogen and carbon - Photon Activation combined with carrier gas hot extraction T2 - Trends in Sample Preparation ´07 CY - Seggauberg, Austria DA - 2007-06-26 PY - 2007 AN - OPUS4-15691 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Nanostructured alumina coatings T2 - XIV International Sol-Gel-Conference CY - Montpellier, France DA - 2007-09-02 PY - 2007 AN - OPUS4-15698 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehnik-Habrink, Petra T1 - Analysenverfahren zur simultanen Bestimmung von PAK, PCB und Organochlorpestiziden in Waldboden T2 - Jahrestagung Umweltchemie und Ökotoxikologie CY - Osnabrück, Germany DA - 2007-09-26 PY - 2007 AN - OPUS4-15678 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Joshi, Ranjit T1 - Selective surface functionalisation of polypropylene films using the underwater capillary discharge T2 - 18th International Symposium on Plasma Chemistry CY - Kyoto, Japan DA - 2007-08-26 PY - 2007 AN - OPUS4-15752 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bras, A. T1 - Confining effects in the molecular dynamics of a nematic mixture investigated by dieelectric spectroscopy T2 - "Meeting in the Challenges of the 21. Century Novel Applications of Broadband Spectroscopy" NATO Advanced Research Workshop CY - Suzdal, Russia DA - 2007-07-22 PY - 2007 AN - OPUS4-15753 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Elementspurenanalytik an höchstreinen Säuren mit GFAAS und mit HR-ICP-MS T2 - CANAS '01, Colloquium Analytische Atomspektroskopie CY - Freiberg, Germany DA - 1997-03-09 PY - 1997 AN - OPUS4-15929 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Application of palladium as a chemical modifier in electrothermal atomic absorption spectrometry with glassy carbon platforms T2 - CSI XXIX Post Symposium Electrothermal Atomization in Analytical Atomic Spectroscopy CY - Ulm, Germany DA - 1995-09-03 PY - 1995 AN - OPUS4-15930 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Determination of gallium, indium and thallium in highly pure substances by graphite furnace atomic absorption spectrometry with column preconcentration-separation T2 - Colloquium Spectroscopicum Internationale XXIX CY - Leipzig, Germany DA - 1995-08-27 PY - 1995 AN - OPUS4-15932 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - ET AAS-Analyse hochreiner Eisenmaterialien T2 - CANAS '01, Colloquium Analytische Atomspektroskopie CY - Freiberg, Germany DA - 2001-03-11 PY - 2001 AN - OPUS4-15933 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Anwendung der Glaskohlenstoffplattform in der Graphitrohrofen-AAS T2 - CANAS '95, Colloquium Analytische Atomspektroskopie CY - Konstanz, Germany DA - 1995-04-02 PY - 1995 AN - OPUS4-15935 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matschat, Ralf T1 - Untersuchungen zur Multielement-Spurenanalytik von Siliciumnitridpulver durch Mikrowellen-Druckaufschluss und atomspektrometrische Detektion T2 - CANAS '99, Colloquium Analytische Atomspektroskopie CY - Konstanz, Germany DA - 1999-03-14 PY - 1999 AN - OPUS4-15936 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Zum Einfluss des Plattformmaterials bei der ET AAS-Analyse von Gallium T2 - CANAS '01, Colloquium Analytische Atomspektroskopie CY - Oberhof, Germany DA - 1993-03-15 PY - 1993 AN - OPUS4-15941 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - ET AAS determination of trace impurities in different high purity iron materials T2 - UHPM-2001, 8th International Conference on Ultra-High Purity Base Metals CY - Berlin, Germany DA - 2001-06-25 PY - 2001 AN - OPUS4-15942 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hasenstab, A. T1 - Holzkonstruktionen mit Radar und Thermografie zerstörungsfrei untersuchen T2 - DGZfP-Jahrestagung CY - Fürth, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-15946 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noack, Siegfried T1 - Die Rekonstitutionsmethode - eine robuste, quantitative RFA Methode zur Realisierung der Richtigkeit und Anbindung an das SI System T2 - PRORA 2007 Fachtagung Prozessnahe Röntgenanalytik CY - Berlin, Germany DA - 2007-11-15 PY - 2007 AN - OPUS4-15920 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Determination of trace impurities in high purity iron materials T2 - 4th European Furnace Symposium and XV Slovak Spectroscopic Conference CY - Vysoké Tatry, Slovakia DA - 2000-06-12 PY - 2000 AN - OPUS4-15927 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Determination of silicon in ultrapure acids and water by ET AAS T2 - 3rd European Furnace Symposium CY - Prague, Czech Republic DA - 1998-06-14 PY - 1998 AN - OPUS4-15928 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jaenisch, Gerd-Rüdiger T1 - Analytische Modellierung für die Radiologie mit aRTist - analytical RT inspection simulation tool T2 - DGZfP-Jahrestagung 2007 CY - Fürth, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-15959 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidemann, Gerd T1 - Fibre reinforced autocloved aerated concrete studied by computed tomography T2 - International Symposium on Digital Radiography and Computed Tomography CY - Lyon, France DA - 2007-06-25 PY - 2007 AN - OPUS4-15960 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gründer, Klaus-Peter T1 - Characterizaton of shock absorber deformation by optical surface digitization T2 - PATRAM Konferenz 2007 CY - Miami, FL, USA DA - 2007-10-21 PY - 2007 AN - OPUS4-15968 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maierhofer, Christiane T1 - Bewertung von Radar- und Ultraschalldaten mit Hilfe der Datenfusion T2 - DGZfP-Jahrestagung CY - Fürth, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-15949 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Visual perception of spatial subjects T2 - DIR 2007 - International Symposium on Digital Industrial Radiology and Computed Tomography CY - Lyon, France DA - 2007-06-25 PY - 2007 AN - OPUS4-15952 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Threat detection and imaging T2 - Future Security 2nd Securtiy Research Conference CY - Karlsruhe, Germany DA - 2007-09-12 PY - 2007 AN - OPUS4-15953 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Surface analysis (XPS, ToF-SIMS, NEXAFS) of organosilane functionalized substrates to be used as microarray platforms T2 - ECASIA'07 CY - Brussels, Belgium DA - 2007-09-10 PY - 2007 AN - OPUS4-15985 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Materialprüfung und Erkennung von Gefahren für die öffentliche Sicherheit T2 - DGZfP-Jahrestagung 2007 CY - Fürth, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-16028 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matschat, Ralf T1 - Einsatz unterschiedlicher atomspektrometrischer Methoden und Techniken zur Elementspurenanalytik ausgewählter Reinststoff-Kalibriersubstanzen T2 - Analytica '96 CY - Munich, Germany DA - 1996-04-23 PY - 1996 AN - OPUS4-16010 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Arndt, Ralf T1 - Adaption der Puls-Phasen-Thermografie für die quantitative zerstörungsfreie Prüfung im Bauwesen T2 - DGZfP-Jahrestagung CY - Fürth, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-16018 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich A1 - Hübert, Thomas T1 - Sensorsysteme zum Aufspüren und Detektieren von Gefahren T2 - 8. Dresdner Sensor-Symposium CY - Dresden, Germany DA - 2007-12-10 PY - 2007 AN - OPUS4-16097 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich A1 - Hübert, Thomas T1 - Detektion von Wasserstoff mit Katalytischen Sensoren T2 - 8. Dresdner Sensor-Symposium CY - Dresden, Germany DA - 2007-12-10 PY - 2007 AN - OPUS4-16098 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raedel, Martina T1 - Naturwissenschaft meets Kunsthistorik Provenienzbestimmung eines mittelalterlichen Glasgemäldes T2 - Tagung Archäometrie und Denkmalpflege CY - Potsdam, Germany DA - 2007-09-19 PY - 2007 AN - OPUS4-16165 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, André T1 - Bauteilerprobung und -prüfung im geführten Fallprüfstand T2 - Tagung "Werkstoffprüfung 2007" CY - Neu-Ulm, Germany DA - 2007-11-29 PY - 2007 AN - OPUS4-16142 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mc Hugh, Jarlath T1 - Production control of fibre composites using ultrasound T2 - 10th International AVK Conference on Reinforced Plastics and Thermosets CY - Stuttgart, Germany DA - 2007-11-05 PY - 2007 AN - OPUS4-16119 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naghib Zadeh, Hamid T1 - Development of capacitor materials with sintering temperature below 900°C T2 - 10th Intern. Conf. of the European Ceramic Soc., ECerS 2007 CY - Berlin, Germany DA - 2007-06-17 PY - 2007 AN - OPUS4-16201 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bremser, Wolfram T1 - Model building and Monte Carlo simulation in a microbiological PT T2 - EUROANALYSIS XIV CY - Antwerp, Belgium DA - 2007-09-09 PY - 2007 AN - OPUS4-16263 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Silbernagl, Dorothee T1 - Nanomechanical properties of mechanical double-layers: a novel semiempirical analysis T2 - JPK User Forum in der Charité CY - Berlin, Germany DA - 2007-10-09 PY - 2007 AN - OPUS4-16269 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gradt, Thomas T1 - Apparatus for friction tests of support elements in fusion devices T2 - 17th International Vacuum Congress (IVC-17) CY - Stockholm, Sweden DA - 2007-07-01 PY - 2007 AN - OPUS4-16258 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steiger, Thomas T1 - Software update on COMAR - the international database for certified reference materials T2 - Internationale Konferenz EUROANALYSIS XIV CY - Antwerp, Belgium DA - 2007-09-09 PY - 2007 AN - OPUS4-16241 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Sebastian T1 - Certification of Pt, Pd and Rh in a used car catalyst reference material T2 - IGAS-Jahrestagung CY - Berlin, Germany DA - 2007-11-08 PY - 2007 AN - OPUS4-16245 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Sebastian T1 - Certification of a set of pure copper reference materials - analytical challenges and pitfalls T2 - IGAS-Jahrestagung CY - Berlin, Germany DA - 2007-11-08 PY - 2007 AN - OPUS4-16246 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten T1 - Keramische Multilayertechnologie T2 - Symposium "Materialforschung für Innovationen in der Region Berlin/Brandenburg" CY - Potsdam, Germany DA - 2007-09-17 PY - 2007 AN - OPUS4-16331 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berkei, I. T1 - Naturwissenschaftliche Untersuchungen und Restaurierungen von Glasmalereien des 19. Jahrhunderts aus der Kirsch zu Lindow T2 - Salon Du Patrimoine Culturel 2007 CY - Paris, France DA - 2007-11-08 PY - 2007 AN - OPUS4-16343 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred T1 - Development of new methodes for extremly damaged painted glass of the 19th & 20th century T2 - Salon Du Patrimoine Culturel 2007 CY - Paris, France DA - 2007-11-08 PY - 2007 AN - OPUS4-16345 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riebe, Gundel T1 - A comparative study in the field of soil analysis T2 - Trends in sample preparation CY - Seggauberg, Austria DA - 2004-07-04 PY - 2004 AN - OPUS4-16300 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Achim T1 - Nitrogen determination in boron carbide by IPAA and gas fusion analyses T2 - GDCh-Wissenschaftsforum Chemie 2007 CY - Ulm, Germany DA - 2007-09-16 PY - 2007 AN - OPUS4-16301 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Schwefel in Kraftstoffen - Referenzanalysen am Limit T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-16302 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goebbels, Jürgen T1 - Dimensional control of reference structures with computed tomography T2 - BESSY User Meeting 2007 CY - Berlin, Germany DA - 2007-12-06 PY - 2007 AN - OPUS4-16368 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malz, Frank T1 - Quantitative NMR spectroscopy - a precise and accurate tool for assay determinations in the pharmaceutical analysis T2 - RDPA 2007, 12th international meeting on recent developments in pharmaceutical analysis CY - Elba, Italy DA - 2007-09-23 PY - 2007 AN - OPUS4-16393 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kreutzbruck, Marc T1 - Untersuchung zur 3D-Magnetographie in der Drahtprüfung mittels hochauflösendem GMR-Wirbelstromprüfsystem T2 - DGZfP-Jahrestagung 2007 CY - Fürth, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-16423 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Investigation of wettability of surface modified polymer wafers used in micro fluidic device fabrication T2 - 4th International Symposium on Practical Surface Analysis (PSA-07) and 6th Korea-Japan International Symposium on Surface Analysis CY - Kanazawa, Japan DA - 2007-11-25 PY - 2007 AN - OPUS4-16381 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Graf, Nora T1 - Optimization of cleaning and aminosilanization protocols for Si wafers to be used as platforms for biochip microarrays by surface analysis (XPS, ToF-SIMS and NEXAFS spectroscopy) T2 - 4th International Symposium on Practical Surface Analysis (PSA-07) and 6th Korea-Japan International Symposium on Surface Analysis CY - Kanazawa, Japan DA - 2007-11-25 PY - 2007 AN - OPUS4-16382 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baytekin, H. Tarik T1 - Optimization of process parameters for plasma-polymerized ethylene films using ToF-SIMS with principal component analysis (PCA) T2 - 4th International Symposium on Practical Surface Analysis (PSA-07) and 6th Korea-Japan International Symposium on Surface Analysis CY - Kanazawa, Japan DA - 2007-11-25 PY - 2007 AN - OPUS4-16385 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Descalzo López, Ana Belén T1 - Phenanthrene ring-fused boron-dipyrromehenes an new highly emitting red visible/near-infrared dyes T2 - Method and Application of Fluerescence (MAF10) CY - Salzburg, Austria DA - 2007-09-09 PY - 2007 AN - OPUS4-16410 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Malow, Marcus T1 - Brandvermeidung bei der Lagerung von biogenen Brennstoffen T2 - Klimazwei Tagung, Umweltforum CY - Berlin, Germany DA - 2007-02-28 PY - 2007 AN - OPUS4-16509 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Analysis of cast Iron bx Laser Induced breakdown spectroscopy using ortogonal pre-ablation spark and high-resolution echelle spectrometer T2 - FACSS 2006 CY - Orlando, FL, USA DA - 2006-09-24 PY - 2006 AN - OPUS4-16480 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goebbels, Jürgen T1 - Einfluss der Strahlenquellen auf das dimensionelle Messen T2 - Frauenhofer Gesellschaft: Workshop "Dimensionelles Messen mit Computertomographie" CY - Saarbrücken, Germany DA - 2008-01-30 PY - 2008 AN - OPUS4-16515 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baytekin, H. Tarik T1 - Characterisation of self-assembly of coordination polymers and vesicles using NMR, ESI-FTICR, TEM and XPS T2 - 4th International Symposium on Practical Surface Analysis (PSA-07) and 6th Korea-Japan International Symposium on Surface Analysis CY - Kanazawa, Japan DA - 2007-11-25 PY - 2007 AN - OPUS4-16474 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Evaluation of optical thickness of laser induced plasma by duplication factor approach T2 - FACSS 2006 CY - Orlando, FL, USA DA - 2006-09-24 PY - 2006 AN - OPUS4-16479 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baier, Jennifa T1 - Zerstörungsfreie Prüfung von funktionellen Zinkschichten T2 - ZVO Oberflächentage 2008 CY - Würzburg, Germany DA - 2008-09-24 PY - 2008 AN - OPUS4-16565 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weritz, Friederike T1 - Einfluss der Heterogenität auf die Bestimmung von Salzgehalten in Beton mit LIBS T2 - Anakon 2007, Jahrestagung der GDCh-Fachgruppe Analytische Chemie CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-16592 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schlüter, Vivien T1 - Structure-integrated sensors in aircrafts T2 - Messe "Aerospace TEsting, Design, Manufacturing 08" CY - Munich, Germany DA - 2008-04-15 PY - 2008 AN - OPUS4-16674 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stoppel, Markus T1 - BetoScan "Selbstfahrendes Scannersystem für Betonflächendiagnosen" T2 - Bauwerksdiagnose 2008 CY - Berlin, Germany DA - 2008-02-21 PY - 2008 AN - OPUS4-16678 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Dielectric properties of nanocomposites based on polyethylene and layered double hydroxide T2 - Frühjahrstagung der Deutschen Physikalischen Gesellschaft, Arbeitskreis Chemische Physik und Polymerphysik CY - Berlin, Germany DA - 2008-02-25 PY - 2008 AN - OPUS4-16700 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Dielectric and gas transport properties of polymeric nanocomposites based on polyhedral oligomeric silsesquioxanes T2 - Frühjahrstagung der Deutschen Physikalischen Gesellschaft, Arbeitskreis Chemische Physik, Polymerphysik CY - Berlin, Germany DA - 2008-02-25 PY - 2008 AN - OPUS4-16701 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bahlmann, Arnold T1 - Neue Konzepte für die Kalibrierung und Auswertung von Immunoassays T2 - GDCh-Doktorandentagung CY - Attendorn, Germany DA - 2008-02-10 PY - 2008 AN - OPUS4-16655 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hattermann, Hilke T1 - Properties of sol gel alumina coatings with incorporated tungsten disulfide nanoparticles T2 - DPG-Tagung CY - Berlin, Germany DA - 2008-02-25 PY - 2008 AN - OPUS4-16667 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ewert, Uwe A1 - Goebbels, Jürgen T1 - Industrielle Computertomographie T2 - Fachtagung Wels CY - Wels, Austria DA - 2008-02-27 PY - 2008 AN - OPUS4-16696 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Labahn, Diana T1 - Molecular dynamics of ultrathin supported polysulfone films studied by dielectric spectroscopy T2 - Frühjahrstagung der Deutschen Physikalischen Gesellschaft, Arbeitskreis Chemische Physik und Polymerphysik CY - Berlin, Germany DA - 2008-02-25 PY - 2008 AN - OPUS4-16697 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noll, Matthias T1 - Succession of the fungal and bacterial community structure in spruce wood debris T2 - Jahrestagung der Vereinigung für Allgemeine und Angewandte Mikrobiologie CY - Frankfurt am Main, Germany DA - 2008-03-09 PY - 2008 AN - OPUS4-16727 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Ringversuche: Präparation mineralölkohlenwasserstoffhaltiger Wasserproben T2 - GDCh Jahrestagung, Wasserchemische Gesellschaft CY - Trier, Germany DA - 2008-04-28 PY - 2008 AN - OPUS4-16731 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mönch, Bettina T1 - A method of detection of ehtylglucuronide by GC-EI-MS using a cold injection system T2 - Tag der Chemie CY - Berlin, Germany DA - 2011-07-13 PY - 2011 AN - OPUS4-23991 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merk, Virginia T1 - Design and characterization of a new planar SERS sensor T2 - ECSBM CY - Coimbra, Portugal DA - 2011-08-29 PY - 2011 N1 - Geburtsname von Merk, Virginia: Joseph, V. - Birth name of Merk, Virginia: Joseph, V. AN - OPUS4-24183 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drescher, Daniela T1 - Biological multiplex applications of optical nanoprobes in live cells T2 - Tag der Chemie CY - Berlin, Germany DA - 2011-07-13 PY - 2011 AN - OPUS4-24184 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lühl, Lars A1 - Mahlkow, S. T1 - X-Ray Absorption Near Edge Spectroscopy at Attic Shards and their Replicas T2 - TECHNART 2011, Non-destructive and microanalytical techniques in art and cultural heritage CY - Berlin, Germany DA - 2011-04-26 PY - 2011 AN - OPUS4-24145 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drescher, Daniela T1 - Combining SERS and viablility tests for the investigation of nanotoxicity T2 - ESCBM - 14th European Conference on the Spectroscopy of Biological Molecules CY - Coimbra, Portugal DA - 2011-08-29 PY - 2011 AN - OPUS4-24186 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bussian, B T1 - Monitoring organic pollutants in German forest soils T2 - Jahrestagung der Deutschen Bodenkundlichen Gesellschaft CY - Berlin, Germany DA - 2011-09-03 PY - 2011 AN - OPUS4-24188 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Analysis of femtosecond laser irradiation effects on amorphous hydrogenated hard carbon layers: Combining topometry, micro Raman spectroscopy and microsale mechanical indentation T2 - 11th International Conference on Laser Ablation (COLA 2011) CY - Playa del Carmen, Mexico DA - 2011-11-13 PY - 2011 AN - OPUS4-24189 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhm, S. T1 - Dynamics of the formation of laser-induced periodic surface structures on dielectrics and semiconductors upon femtosecond laser pulse irradiation sequences T2 - 11th International Conference on Laser Ablation (COLA 2011) CY - Playa del Carmen, Mexico DA - 2011-11-13 PY - 2011 AN - OPUS4-24193 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - ToF-SIMS study of the palladium(II) coordination on a pyridyl terminated self assembled monolayer T2 - SIMS XVIII CY - Riva del Garda, Italy DA - 2011-09-18 PY - 2011 AN - OPUS4-24197 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühn, Julius T1 - Buried interface characterization for a click chemistry- derivatized self assembled monolayer on gold T2 - HAXPES 2011 CY - Hamburg, Germany DA - 2011-09-14 PY - 2011 AN - OPUS4-24198 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - Introduction of bulky donor head groups on a self assembled monolayer on gold exploiting click chemistry T2 - ECASIA 2011 CY - Cardiff, Wales DA - 2011-09-04 PY - 2011 AN - OPUS4-24201 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Girard-Lauriault, Pierre-Luc T1 - Functionalization of graphite and carbon nanotube surfaces by vacuum-ultraviolet induced photochemical processes T2 - ECASIA '11 - 14th European Conference on Applications of surface and Interface Analysis CY - Cardiff, Wales DA - 2011-09-04 PY - 2011 AN - OPUS4-24203 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stegemann, B. T1 - Laser Ablation of Thin Films for Photovoltaic Application T2 - 26. Tag der Chemie CY - Berlin, Germany DA - 2011-07-13 PY - 2011 AN - OPUS4-24124 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kadenkin, Alexander T1 - Determination of salt pollutants in building materials using Raman spectroscopy T2 - TECHNART 2011 CY - Berlin, Germany DA - 2011-04-26 PY - 2011 AN - OPUS4-24128 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf T1 - VOC-Emissions from Plywood Boards T2 - Conference on Indoor Air 2011 CY - Austin, TX, USA DA - 2011-06-05 PY - 2011 AN - OPUS4-24142 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musolff, André T1 - Drop Test Program with a HLW Cask Model - Performance, Measurements and Results T2 - INMM 2011 - 52nd Annual Meeting CY - Palm Desert, CA, USA DA - 2011-07-17 PY - 2011 AN - OPUS4-23945 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Chemical analysis of scorch marks during smouldering of spruce wood - Fire debris, particles and smoke gases T2 - 10 th International IAFSS Symposium CY - College Park, MD, USA DA - 2011-06-19 PY - 2011 AN - OPUS4-23954 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Langzeitmonitoring am Berliner Hauptbahnhof N2 - Problemstellung: - größter Turmbahnhof Europas - Bau auf nachgiebigem Sandboden - weitere Baumaßnahmen in unmittelbarer Nähe - Setzungen und Hebungen der Brückenfundamente - resultierende Beanspruchungen der Konstruktion - Erfassung der Beanspruchungen und Verformungen während Bau und Betrieb - Möglichkeit der Nachstellung der Gabelstützen T2 - VDI/VDE-Expertenforum im Rahmen der Messe "Sensor und Test 2011" CY - Nuremberg, Germany DA - 07.06.2011 PY - 2011 AN - OPUS4-24040 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Alexander T1 - New Bispectral Measurement Device for Fluorescent Materials T2 - 27th Session of the CIE 2011 CY - Sun City, South Africa DA - 2011-07-10 PY - 2011 AN - OPUS4-24044 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Werrel, Martin T1 - Calculation of the Heat Release Rate from Oxygen Consumption in the Cone Calorimeter using the Controlled-atmosphere box T2 - 10th International Symposium on Fire Safety Science, University of Maryland CY - College Park, MD, USA DA - 2011-06-19 PY - 2011 AN - OPUS4-24086 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Interpretations of temperature measurements in organic peroxide pool fires T2 - 5th European Combustion Meeting ECM 2011, Cardiff University CY - Cardiff, Wales DA - 2011-06-29 PY - 2011 AN - OPUS4-24099 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schälike, Stefan T1 - CFD Simulation to predict the thermal radiation of large LNG pool fires T2 - 5th European Combustion Meeting ECM 2011, Cardiff University CY - Cardiff, Wales DA - 2011-06-29 PY - 2011 AN - OPUS4-24100 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tentschert, J. T1 - Perfluoro Acrylates as Surface Refining Agents for Paper and Board: Investigations on Their Resistance at Higher Temperature T2 - 3rd International Workshop Anthropogenic Perflourinated Compounds CY - Amsterdam, Netherlands DA - 2011-06-15 PY - 2011 AN - OPUS4-24067 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fischer, O. T1 - Comparative study on Polyesters with systematically altered Phosphorus containing side groups T2 - 13th European Meeting on Fire Retardant Polymers, FRPM CY - Alessandria, Italy DA - 2011-06-26 PY - 2011 AN - OPUS4-24070 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, P. T1 - Phosphorous containing flame retardant additives via MICHAEL-Addition to acrylates T2 - 13th European Meeting on Fire Retardant Polymers, FRPM CY - Alessandria, Italy DA - 2011-06-26 PY - 2011 AN - OPUS4-24073 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Alexander T1 - Messaufbau zur bispektralen Messung der Fluoreszenzeigenschaften von reflektierenden Materialien T2 - DGaO-Jahrestagung CY - Ilmenau, Germany DA - 2011-06-14 PY - 2011 AN - OPUS4-24046 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Habel, Wolfgang T1 - Langzeitmonitoring der Ederstaumauer N2 - Die Fixierung der Stahlanker im Felsfundament zur Stabilisierung der Schwergewichtsmauer werden mit integrierten faseroptischen Dehnungssensoren überwacht. In die Glasfaser sind Reflektoren eingebaut; zwei Reflektoren bilden jeweils eine Messstrecke, die Auskunft über die Fixierung geben. Am Ankerkopf wird der Zustand der Messstrecken abgefragt. T2 - Expertenforum Strukturmonitoring auf der Sensor+Test-Messe CY - Nuremberg, Germany DA - 08.06.2011 PY - 2011 AN - OPUS4-24047 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Habel, Wolfgang T1 - Monitoring von Hochspannungskabel-Muffen und -Endverschlüssen N2 - - Zunehmender Energiebedarf erfordert höhere Übertragungskapazitäten - Dezentrale ökologische Energiegewinnung, z. B. Offshore, erfordert Übertragung großer Energiemengen in die Ballungszentren (Nord-Süd-Trassen) - Hohe Auslastung der Netze erfordert Beherrschbarkeit der im Fehlerfall auftretenden Risiken für Menschen, Umwelt und energietechnische Anlagen - Etwa 90 % der Anlagenausfälle sind verursacht durch Teilentladungen (TE) in Endverschlüssen und Muffen mit modernen polymeren Isoliersystemen - Etablierte elektrische Verfahren erlauben nur externe Schadensdetektion. T2 - Expertenforum Strukturmonitoring auf der Sensor+Test-Messe CY - Nuremberg, Germany DA - 08.06.2011 PY - 2011 AN - OPUS4-24054 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hohendorf, Stefan T1 - Monitoring von Gefahrgutbehältern während des Transports durch autarke Sensorik- und Kommunikationsmodule N2 - Ziel ist die Entwicklung eines universellen Monitoringmoduls für Gefahrgutbehälter, das während der gesamten Nutzungsdauer am Behälter verbleibt. Durch die Auswertung verschiedener Messwerte, die vom Modul erfasst werden, kann die Sicherheit bei Gefahrguttransporten erhöht und das Unfallrisiko verringert werden. Weiterhin können Rückschlüsse über die Sicherheit und den Zustand des Behälters gezogen werden (Alter, Verschleiß, frühere Inhalte, Überschreitung von Spezifikatonsgrenzen). T2 - VDI/VDE-Expertenforum im Rahmen der Messe "Sensor und Test 2011" CY - Nuremberg, Germany DA - 07.06.2011 PY - 2011 AN - OPUS4-24057 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilder, Constanze T1 - Bohrpfahlüberwachung mit strukturintegrierten faseroptischen Sensoren N2 - - Zuverlässiger Nachweis der Tragfähigkeit und Strukturintegrität von Bohr- und Rammpfählen - Nur ein Sensor für alle Pfahlprüfmethoden - Umfassendere Aussagen über Boden-Bauwerks-Interaktion und Gebrauchstauglichkeit durch Nutzung von Sensorketten - Langzeitüberwachung tragender Bauwerkselemente T2 - Sensor+Test 2011 CY - Nuremberg, Germany DA - 07.06.2011 PY - 2011 AN - OPUS4-24058 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schuler, Stephanie T1 - Messung von Mikroverformungen der Bindemittelmatrix mit eingebetteten faseroptischen Sensoren T2 - Tagung Bauchemie CY - Hamburg, Germany DA - 2011-10-06 PY - 2011 AN - OPUS4-24061 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, Jens T1 - Fiber optic heart rate sensor for integration into personal protective equipment N2 - The European research project i-Protect “Intelligent PPE system for personnel in high-risk and complex environments”, supported by the EU 7th Framework Programme, develops an advanced personal protective equipment (PPE) system that will ensure active protection and information support for personnel operating in high risk and complex environments in fire fighting, chemical and mining rescue operations. Within the project an intelligent underwear for monitoring the rescuers heart rate, body temperature, and respiratory rate will be developed. T2 - BioPhotonics Workshop CY - Parma, Italy DA - 08.06.2011 PY - 2011 AN - OPUS4-24062 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bykov, Y. T1 - Synthesis of new functionalised phosphorus-containing monomers as flame retardants for polyesters T2 - 13th European Meeting on Fire Retardant Polymers, FRPM CY - Alessandria, Italy DA - 2011-06-26 PY - 2011 AN - OPUS4-24075 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vila-Comamala, J. T1 - Characterization of a 20 nm Hard X-ray Focus by Ptychographic Coherent Diffractive Imaging T2 - SPIE Smart Structures/ NDE CY - San Diego, CA, USA DA - 2011-03-06 PY - 2011 AN - OPUS4-24079 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Regina T1 - Numerische Verfahren für die aktive Thermografie zur Untersuchung der Rückwand T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-24105 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hösl, Simone T1 - Quantitative detection of antibodies via metal coded tagging of the hinge region T2 - Tag der Chemie, Humboldt-Universität zu Berlin CY - Berlin, Germany DA - 2011-07-13 PY - 2011 N1 - Geburtsname von Hösl, Simone: Hardt, S. - Birth name of Hösl, Simone: Hardt, S. N1 - Geburtsname von Müller, Larissa: Wäntig, L. - Birth name of Müller, Larissa: Wäntig, L. AN - OPUS4-24107 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sugiyama, Kaori T1 - Direct Injection of Cells into an ICP-MS for metallomic studies by using a droplet injection nebulizer T2 - Third International Symposium on Metallomics CY - Münster, Germany DA - 2011-06-15 PY - 2011 N1 - Geburtsname von Sugiyama, Kaori: Shigeta, K. - Birth name of Sugiyama, Kaori: Shigeta, K. AN - OPUS4-24108 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bleul, Regina T1 - Probing Polymersome-Protein and -Cell Interactions: Structural Characterization and In Vitro Studies T2 - Bio-Nano Responses Conference CY - Essen, Germany DA - 2011-09-11 PY - 2011 AN - OPUS4-24465 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosemann, P. T1 - In-vitro corrosion and biocompatibility study of coated MgCa1.0 magnesium alloys T2 - Eurocorr 2011 CY - Stockholm, Sweden DA - 2011-09-04 PY - 2011 AN - OPUS4-24467 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Bewertung von HTC-Kohle für ihre Eignung zur Verbesserung von Bodeneigenschaften T2 - First INTERREG NSR Biochar conference - Biokohle - Klimaretter oder Mogelpackung? Biochar - Climate Savior or Bluff Package? 72. Symposium des ANS e. V., FU BErlin CY - Berlin, Germany DA - 2011-10-05 PY - 2011 AN - OPUS4-24456 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Surface analytical investigations (XPS, NEXAFS and ToF-SIMS) of carbohydrate-functionalized surfaces T2 - SIMS XVIII, 18th International Conference on Secondary Ion Mass Spectrometry CY - Trento, Italy DA - 2011-09-18 PY - 2011 AN - OPUS4-24445 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiegner, Katharina T1 - Method validation study for emissions of volatile organic compounds (VOC) from construction products using emission test chambers T2 - EURACHEM: 7th Workshop; Proficiency testing in analytical chemistry, microbiology and laboratory medicine; Current Practice and Future Directions CY - Istanbul, Turkey DA - 2011-10-02 PY - 2011 AN - OPUS4-24447 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumeyer, Tino T1 - Experimental Drop Testing of Waste Containers for the KONRAD Repository T2 - ICEM 2011 - 14th International Conference on Environmental Remediation and radioactive Waste Management CY - Reims, France DA - 2011-09-25 PY - 2011 AN - OPUS4-24449 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Houllé, Matthieu T1 - CNT-MODIFIED FABRICS FOR THE MANUFACTURING OF MULTI-FUNCTIONAL LAYERED COMPOSITES T2 - CESEP'11 4th International Conference on Carbons for Energy Storage/Conversion and Environment Protection CY - Vichy, France DA - 2011-09-25 PY - 2011 AN - OPUS4-24450 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ramanujam, Maalolan T1 - Effect of Artificial UV Weathering with Varied Humidity on Dielectric and Surface Properties of Polymers T2 - European Weathering Symposium 2011 (EWS) CY - Lisbon, Portugal DA - 2011-09-21 PY - 2011 AN - OPUS4-24428 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schälike, Stefan T1 - Surface emissive power of organic peroxide and hydrocarbon pool fires - experimentel and CFD simulation T2 - 8th European Congress of Chemical Engineering CY - Berlin, Germany DA - 2011-09-25 PY - 2011 N1 - Geburtsname von Vela-Wallenschus, Iris: Vela, I. - Birth name of Vela-Wallenschus, Iris: Vela, I. AN - OPUS4-24431 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Th. T1 - Partial oxidation of o-xylene to phtalic anhydride inside of the explosion regime using a micro structured reactor T2 - 8th European Congress of Chemical Engineering CY - Berlin, Germany DA - 2011-09-25 PY - 2011 AN - OPUS4-24436 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, K. T1 - Ultrasound measuring system: Principle and application T2 - Thermosets Conference 2011 - From monomers to components CY - Berlin, Germany DA - 2011-09-21 PY - 2011 AN - OPUS4-24438 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - BAM-L200: A new type of reference material for the determination of lateral resolution and the calibration of length scale T2 - 18th International Conference on Secondary Ion Mass Spectrometry CY - Riva del Garda, Italy DA - 2011-09-18 PY - 2011 AN - OPUS4-24441 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - Comparison of methods for the determination of lateral resolution in imaging surface analysis T2 - 14th International Conference on Applications of Surface and Interface Analysis (ECASIA 11) CY - Cardiff, Wales DA - 2011-09-04 PY - 2011 AN - OPUS4-24443 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tag, Mathias T1 - Experimental study of aerosol cell exposure with an air-liquid interface T2 - Congress of the European Societies of Toxicology CY - Paris, France DA - 2011-08-28 PY - 2011 N1 - Geburtsname von Tag, Mathias: Deutscher, M. - Birth name of Tag, Mathias: Deutscher, M. AN - OPUS4-24405 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dörfel, Ilona T1 - V-Cr containing precipitates in the steel T92 before and after tests under oxyfuel steam power plant conditions T2 - Microscopy Conference 2011 CY - Kiel, Germany DA - 2011-08-28 PY - 2011 AN - OPUS4-24413 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ehrig, Karsten T1 - Comparison of crack detection methods for analyzing damage processes in concrete with computed tomography T2 - International Symposium on Digital Industrial Radiology and Computed Tomography CY - Berlin, Germany DA - 2011-06-20 PY - 2011 AN - OPUS4-23868 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinhardt, F. T1 - Analyzing the chemical composition of ultrafine particles by X-Ray specctrometry under grazing incidence T2 - International Symposium "Ultrafine Particles" CY - Brussels, Belgium DA - 2011-05-26 PY - 2011 AN - OPUS4-23870 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Casperson, Ralf T1 - "Verortung" der Prüfergebnisse bei der ZfP an Eisenbahnschienen N2 - Das Schienennetz der DB und anderer Bahngesellschaften wird regelmäßig mit Schienenprüfzügen inspiziert. Die mit den Prüfzügen aufgenommenen Messdaten werden offline zu einem späteren Zeitpunkt ausgewertet. Um Prüfbefunde manuell nachprüfen und ggf. Reparaturmaßnahmen einleiten zu können, ist eine möglichst exakte Zuordnung der Befunde zum Prüfort notwendig. Theoretisch ist jeder Ort des Schienennetzes durch Streckennummer, Richtungskennzahl und Kilometrierung exakt beschrieben. In der Praxis treten jedoch bei der Zuordnung diverse Probleme auf: Die Kilometrierung wird während der Prüfung manuell erfasst, indem die Beschriftung der Kilometer- bzw. Hektometertafeln in das Prüfsystem eingegeben und deren Position beim Vorbeifahren per Tastendruck in die Messdaten „eingeblitzt“ wird. Die Hektometertafeln stehen jedoch nicht an der aufgedruckten Position, sondern sind am nächstgelegenen Mast montiert. Dagegen ist die Ungenauigkeit des manuellen „Einblitzens“ vernachlässigbar. Außerdem ist die Kilometrierung nicht immer eindeutig, da nach Umbaumaßnahmen Kilometersprünge (sowohl fehlende als auch doppelte Kilometer) auftreten können. Abhilfe verspricht der Einsatz des satellitengestützten GPS, vorausgesetzt, die Strecken sind exakt vermessen. Um eine ausreichende Positionsgenauigkeit auch bei schlechten Empfangsbedingungen zu erreichen, ist jedoch ein erheblicher Aufwand notwendig. Die Positionsgenauigkeit eines Standard-GPS-Empfängers genügt hier nicht. Es wird ein Verortungssystem hoher Positionsgenauigkeit auf der Basis des GPS vorgestellt, das sich derzeit in der Erprobung befindet. T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 30.05.2011 PY - 2011 AN - OPUS4-23930 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bleul, Regina T1 - Probing Polymersome-Protein and -Cell Interactions: Structural Characterization and In Vito Studies T2 - Advanced Functional Polymers for Medicine 2011 CY - Enschede, Netherlands DA - 2011-06-15 PY - 2011 AN - OPUS4-23897 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosner, Martin T1 - Three new offset delta 11 B isotope reference materials for environmental boron isotope studies T2 - IAEA 2011 - "International Symposium on Isotopes in Hydrology, Marine Ecosystems, and Climate Change Studies" CY - Monaco DA - 2011-03-27 PY - 2011 AN - OPUS4-23815 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosner, Martin T1 - New offset delta 11 B isotope reference materials for geochemical and environmental boron isotope studies T2 - Goldschmidt Tagung 2011 CY - Prague, Czech Republic DA - 2011-08-14 PY - 2011 AN - OPUS4-23817 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - An alternative lead-matrix-separation procedure exemplarily shown for lead isotope analysis in the Trojan silver artefacts T2 - Technart 2011 CY - Berlin, Germany DA - 2011-04-26 PY - 2011 AN - OPUS4-23818 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Larissa T1 - Multiplexed probing of antibodies using laser ablation ICP-MS T2 - 9. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse und 22. ICP-MS-Anwendertreffen CY - Berlin, Germany DA - 2010-09-06 PY - 2010 N1 - Geburtsname von Müller, Larissa: Wäntig, L. - Birth name of Müller, Larissa: Wäntig, L. AN - OPUS4-23819 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Larissa T1 - Method development for iodination of proteins for LA-ICP-MS based proteomics T2 - European Winter Conference on Plasma Spectrochemistry CY - Zaragoza, Spain DA - 2011-01-30 PY - 2011 N1 - Geburtsname von Müller, Larissa: Wäntig, L. - Birth name of Müller, Larissa: Wäntig, L. AN - OPUS4-23821 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Phase I Oxidation of alpha- and gamma-Hexabromocyclodeodecane by Cytochrome P450 Enzymes: Simulation of the Stereoisomerism of Hydroxylated Metabolites T2 - DIOXIN 2011, 31st International Symposium on Halogenated Persistent Organic Pollutants CY - Brussels, Belgium DA - 2011-08-21 PY - 2011 AN - OPUS4-23823 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hayen, H. T1 - Identifizierung Cadmium-bindender Proteine in Spinat T2 - Jahrestagung des Regionalverbandes Nordrhein-Westfalen der Lebensmittelchemischen Gesellschaft (Fachgruppe der GDCh) CY - Wuppertal, Germany DA - 2011-03-23 PY - 2011 AN - OPUS4-23824 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Martin T1 - Validierung formalkinetischer Größen aus der adiabaten Warmlagerung T2 - Technische Jahreskonferenz der Chemieindustrie CY - Marburg, Germany DA - 2011-05-31 PY - 2011 AN - OPUS4-23789 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Illgen, René T1 - Comparison of XPS and solid-state 19F-NMR measurements of derivatized oxidized MWCNTs T2 - Berliner Chemie Symposium, HU Berlin CY - Berlin, Germany DA - 2011-04-07 PY - 2011 AN - OPUS4-23799 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gallo, Emanuela T1 - Flame retardant PHBV/PBAT blends and biocomposites: synergism between aluminium phosphinate and iron oxide T2 - Advances in polymer based materials and related technologies - Workshop CY - Capri, Italy DA - 2011-05-29 PY - 2011 AN - OPUS4-23802 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, M. T1 - Laser-Ablation Behavior of Thin-Film Materials used in Silicon and CIGSe based Solar Cells T2 - Eröffnungsveranstaltung PVComB - Kompetenzzentrum Dünnschicht- und Nanotechnologie für Photovoltaik Berlin CY - Berlin, Germany DA - 2011-03-30 PY - 2011 AN - OPUS4-24206 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, M. T1 - Single Wavelength Laser Processing for Monolithically Connected Si and CIGSe Thin Film Solar Cells T2 - Eröffnungsveranstaltung PVComB - Kompetenzzentrum Dünnschicht- und Nanotechnologie für Photovoltaik Berlin CY - Berlin, Germany DA - 2011-03-30 PY - 2011 AN - OPUS4-24207 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rakotondrajoa, Andrianiaina T1 - Determination of the efficiency of a Silicon Drift detector (SDD) by Monte Carlo simulation T2 - Fachtagung Prozessnahe Röntgenanalytik PRORA CY - Berlin, Germany DA - 2011-11-24 PY - 2011 AN - OPUS4-24253 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuschke, Christian T1 - Mechanical/Thermal Package Design Safety Assessment and Manufacturing Quality Assurance of Spent Fuel Transport Cas NCS 45 T2 - Waste Management 2010 Conference CY - Phoenix, AZ, USA DA - 2010-03-07 PY - 2010 AN - OPUS4-24286 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bothe, Martin T1 - Star-shaped poly(caprolactone-urethane) networks: Approach to modify shape memory properties T2 - Polymer Degradation Discussion Group, 29th PDDG Conference CY - Sestri Levante, Italy DA - 2011-09-05 PY - 2011 AN - OPUS4-24289 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gross, Thomas T1 - Degradation of organic surfaces during XPS analysis: Case study and proposal of a routine method to describe the photon flux T2 - ECASIA '11 - 14th European Conference on Applications of Surface and Interface Analysis CY - Cardiff, Wales DA - 2011-09-04 PY - 2011 AN - OPUS4-24237 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Femtosecond, picosecond and nanosecond pulse laser cleaning of artificially soiled paper model samples T2 - Konferenz "Laser in the Conservation of Artworks" (LACONA IX) CY - London, England DA - 2011-09-07 PY - 2011 AN - OPUS4-24238 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Surface chemical characterization of carbohydrate films on gold T2 - ECASIA '11 CY - Cardiff, Wales DA - 2011-09-09 PY - 2011 AN - OPUS4-24239 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wirth, Thomas T1 - TOF-SIMS investigation of coated glass beads T2 - 18th International Conference on Secondary Ion Mass Spectrometry CY - Riva del Garda, Italy DA - 2011-09-18 PY - 2011 AN - OPUS4-24240 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Epoxy-functionalized Surfaces: Surface chemical analysis and fluorescence labeling of surface species T2 - ECASIA '11 CY - Cardiff, Wales DA - 2011-09-09 PY - 2011 AN - OPUS4-24242 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Surface chemical Analysis of Microarrays: Problems and Perspectives T2 - ECASIA'11 CY - Cardiff, Wales DA - 2011-09-09 PY - 2011 AN - OPUS4-24243 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - Improvement of Adhesivity of Polypropylene by Its Surface Modification Using the Aerosol Dielectric Barrier Discharge T2 - Adhesion '11, 11th International Conference on the Science and Technology of Adhesion and Adhesives CY - York, England DA - 2011-09-07 PY - 2011 AN - OPUS4-24283 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noll, Matthias T1 - Listeria monocytogenes in raw milk and long-life milk biofilms T2 - COST Exploratory Workshop "Biofilms - Friend or Foe?" CY - Berlin, Germany DA - 2011-06-22 PY - 2011 AN - OPUS4-24218 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böhmert, L. T1 - Der Einfluss eines vitro Verdaus auf die physikochemischen und toxikologischen Eigenschaften von Silbernanopartikeln T2 - 40. Deutscher Lebensmittelchemikertag CY - Halle (Saale), Germany DA - 2011-09-12 PY - 2011 AN - OPUS4-24221 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böhmert, L. T1 - Cytotoxicity of AgPure silver nanoparticles in the human intestinal cell line Caco-2 T2 - Eurotox CY - Paris, France DA - 2011-08-28 PY - 2011 AN - OPUS4-24222 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noll, Matthias T1 - Incorporation of Listeria monocytogenes in a raw milk and ultra heat treated milk-biofilm T2 - Gordon Research Conference on Applied & Environmental Microbiology CY - South Hadley, MA, USA DA - 2011-07-10 PY - 2011 AN - OPUS4-24223 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naumann, Annette T1 - Listeria monocytogenes in milk biofilms T2 - FT-IR Spectroscopy in Microbiological and Medical Diagnostics, Robert-Koch-Institut CY - Berlin, Germany DA - 2011-10-20 PY - 2011 AN - OPUS4-24225 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Guderian, Matthias T1 - Carbon nanomaterials as broadband airborne ultrasound transducer T2 - Proceedings of the Annual World Conference on Carbon 2011 CY - Shanghai, China DA - 2011-07-24 PY - 2011 AN - OPUS4-24233 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jakubcová, Petra T1 - Nachhaltige Verwertung von Bau- und Abbruchabfällen im Bausektor T2 - Tagung Bauchemie CY - Hamburg, Germany DA - 2011-10-06 PY - 2011 AN - OPUS4-24711 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Determination of the proteinaceous binder component and soluble nylon preservative in Central Asian mural paintings using GC-MS T2 - "Auf Grünwedels Spuren - Restaurierung und Forschung an zentralasiatischen Wandmalereien" (Ausstellung des Museums für Asiatische Kunst, Berlin) CY - Berlin, Germany DA - 2011-12-10 PY - 2011 AN - OPUS4-24703 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - A ToF-SIMS study of the deuterium - hydrogen exchange induced by ammonia plasma treatment of polyolefins T2 - 18.th International Conference on Secondary Ion Mass Spectreometry CY - Riva del Garda, Italy DA - 2011-09-19 PY - 2011 AN - OPUS4-24510 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - A ToF-SIMS study of the deuterium - hydrogen exchange induced by ammonia plasma treatment of polyolefins T2 - 14th European Conference on Applications of Surface and Interface Analysis (ECASIA'11) CY - Cardiff, Wales DA - 2011-09-04 PY - 2011 AN - OPUS4-24511 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lischka, Susanne T1 - Application of a twofold C-labeled calibration standard for the analysis of arsenobetaine using HPLC-ESI-MS/MS T2 - CIA CY - Berlin, Germany DA - 2011-09-26 PY - 2011 AN - OPUS4-24418 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - von der Ehe, Kerstin T1 - Structural differences of UHMWPE induced by high dose gamma irradiation T2 - 5th UHMWPE International Meeting CY - Philadelphia, PA, USA DA - 2011-09-22 PY - 2011 AN - OPUS4-24420 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertovic, Marija T1 - "HUMAN FACTORS" BEI DER DATENAUSWERTUNG DER ZFP AM BEISPIEL DER NUKLEAREN ENDLAGERUNG N2 - Untersucht wird die Endlagerung des hoch reaktiven nuklearen Abfalls, die Zuverlässigkeit der ZfP und die Human Factors Methode. T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 30.05.2011 PY - 2011 AN - OPUS4-24596 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, Jens T1 - Humidity Sensing based on Microstructured POF Long Period Gratings T2 - 20th International Conference on Plastic Optical Fibers CY - Bilbao, Spain DA - 2011-09-14 PY - 2011 AN - OPUS4-24597 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Molecular relaxation processes in a MOF-5 structure - Signature of Phenylring fluctuations T2 - Frühjahrstagung der Deutschen Physikalsichen Gesellschaft, Dresden CY - Dresden, Germany DA - 2011-03-13 PY - 2011 AN - OPUS4-24642 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Glaus, Reto T1 - Portable laser ablation sampling using a diode pumped solid state laser T2 - Fall Meeting of the Swiss Society 2011 CY - Lausanne, Switzerland DA - 2011-09-09 PY - 2011 AN - OPUS4-24631 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kanzler, Daniel T1 - Bundesanstalt für Materialforschung und -prüfung 8.33 Arbeitsgruppe: Zuverlässigkeit zerstörungsfreier Diagnosesysteme T2 - 1. Fachtagung im ZEWIS CY - Obernburg, Germany DA - 2011-04-13 PY - 2011 AN - OPUS4-24571 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppe, Enrico T1 - Wireless Sensor Network with Temperature Compensated Measuring Technology for Long-Term Structural Health Monitoring of Buildings and Infrastructures System T2 - Eurosensors XXV CY - Athens, Greece DA - 2011-09-04 PY - 2011 AN - OPUS4-24589 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - de Oliveira, Rui T1 - Werkstoffintegrierte faseroptische Sensoren für Leichtbaustrukturen T2 - SENSOR + TEST 2011, VDI/VDE-Expertenforum CY - Nuremberg, Germany DA - 2011-06-08 PY - 2011 AN - OPUS4-24575 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Finke, C.-H. T1 - Bisphenol A release from fissure sealants T2 - IAPD Interdisciplinary Approach to Paediatric Dentistry CY - Athens, Greece DA - 2011-06-15 PY - 2011 AN - OPUS4-23893 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grasse, Fabian T1 - Mikroschädigungsakkumulation / Dauerfestigkeitsgrenze in FVK T2 - SPP 1466 Kolloquium CY - Berlin, Germany DA - 2011-07-01 PY - 2011 AN - OPUS4-23864 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eberstein, M. T1 - Towards an industrial laser doping process for the selective emitter using phosphoric acid as dopand T2 - 26th European Photovoltaic Solar Energy Conference CY - Hamburg, Germany DA - 2011-09-06 PY - 2011 AN - OPUS4-23968 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Poppenberg, J. T1 - Controlled Preparation of a Pyridyl-Terminated SAM on Gold - a Promising Platform for Layer-by-Layer Self-Assembly through Metal Coordination T2 - Supramolecules & Assemblies, Chemistry Properties and Organization at Multiple Scales CY - Lucca, Italy DA - 2011-06-19 PY - 2011 AN - OPUS4-23969 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, S. T1 - Metal Coordinated Layer-by-Layer Self-Assembly of Macrocycles and Rotaxanes on Gold Surfaces T2 - Supramolecules & Assemblies, Chemistry Properties and Organization at Multiple Scales CY - Lucca, Italy DA - 2011-06-19 PY - 2011 AN - OPUS4-23970 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nofz, Marianne T1 - Eigenschaftsanomalien für CaO-Al2O3-B203-SiO2-Gläser mit variiertem Al2O3-Gehalt T2 - 85. Glastechnische Tagung CY - Saarbrücken, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-24011 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mohamed, Alaa T1 - Surface and Bulk Properties of Spin Coated Commercial and Thin Plasma-Polymerized Polystyrene Films T2 - The 18th International Colloquium on Plasma Processes (CIP) 2011 CY - Nantes, France DA - 2011-07-04 PY - 2011 AN - OPUS4-23982 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Deubel, Jan T1 - Investigation on the Detectability of Fire Accelerants after different Fire Scenarios in the Cone Calorimeter T2 - 10 th International Symposium on Fire Safety Science, University of Maryland CY - College Park, MD, USA DA - 2011-06-19 PY - 2011 AN - OPUS4-23955 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koenders, L. T1 - Normale für die Nanometrologie und -analytik T2 - 16. Tagung Festkörperanalytik CY - Vienna, Austria DA - 2011-07-04 PY - 2011 AN - OPUS4-23964 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gebert, Antje T1 - Determination of the proteinaceous binder component and soluble nylon preservative in Central Asian mural paintings using GC-MS T2 - Tag der Chemie 2011 CY - Berlin, Germany DA - 2011-07-13 PY - 2011 AN - OPUS4-24001 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dohse, Elmar T1 - Einsatz von digitalen Filtern für die Ultraschallprüfung T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-24308 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühn, Julius T1 - A HAXPES Study of a Ternary Palladium Alloy Metal-Electrolyte-Insulator-Semiconductor System T2 - HAXPES 2011 - 4th International Workshop on Hard-X-ray Photoelectron Spectroscopy CY - Hamburg, Germany DA - 2011-09-14 PY - 2011 AN - OPUS4-24350 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Catalytic Properties of Pd-Ni-Co Alloy Thin Films used as Active Layer of a Hydrogen Sensor T2 - ECASIS 2011 - 14th Conference on Applications of Surface and Interface Analysis CY - Cardiff, Wales DA - 2011-09-04 PY - 2011 AN - OPUS4-24351 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maiwald, Michael T1 - Investigations of Flow in Quantitative NMR T2 - EUROMAR2011 CY - Frankfurt am Main, Germany DA - 2011-08-21 PY - 2011 AN - OPUS4-24303 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grehn, M. T1 - Influence of the chemical composition on the femtosecond laser damage of binary and ternary silicate glasses T2 - International High-Power Laser Ablation Conference (HPLA 2012) CY - Santa Fe, NM, USA DA - 2012-04-30 PY - 2012 AN - OPUS4-24360 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ballier, G. T1 - Ultraschallabbildung zur zerstörungsfreien Strukturbestimmung von Betonbauteilen mit Hilfe der "One-Way"-Wellengleichung T2 - DGZfP Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-24841 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, C. T1 - In situ stress monitoring: Investigations of pressure pad coupling conditions T2 - 8th International Symposium on Field Measurement in GeoMechanics CY - Berlin, Germany DA - 2011-09-12 PY - 2011 AN - OPUS4-24843 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liehr, Sascha T1 - Hangüberwachung mit optischen Polymerfasern T2 - VDI/VDE-GMA Expertenforum "Strukturmonitoring und Zustandsüberwachung 2011" CY - Nuremberg, Germany DA - 2011-06-07 PY - 2011 AN - OPUS4-24777 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Streicher, Doreen T1 - 3-D-Visualisierung von Radar- und Ultraschallecho-Daten mit ZIBAmira T2 - DGZfP Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-24802 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppl, T. T1 - Comparison of Low-molecular and Polymeric Flame Retardants for Poly(butylene terephthalate) T2 - 12th biennial international Bayreuth Polymer Symposium, BPS'11 CY - Bayreuth, Germany DA - 2011-09-11 PY - 2011 AN - OPUS4-24764 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rauchegger, Christian T1 - Experimental Results from Heavy Gas Dispersions (R134a) T2 - 7th Global Congress on Process Safety (GCPS) CY - Chicago, IL, USA DA - 2011-03-13 PY - 2011 AN - OPUS4-24750 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Novel Laser Structuring Method for Chalkopyrite Solar Cells T2 - Marie Sklodowska-Curie Symposium on the Foundations of Physical Chemistry CY - Warsaw, Poland DA - 2011-11-18 PY - 2011 AN - OPUS4-24920 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liehr, Sascha T1 - A dynamic fiber optic strain and power change sensor N2 - A dynamic and quasi-distributed sensor principle for simultaneous measurement of length changes and optical power changes between reflection points in an optical fiber is presented. The technique is based on the incoherent optical frequency domain reflectometry (I-OFDR). The calculation of phase and amplitude changes from few measurement points in the frequency domain yields precise and dynamic length and optical power change results up to 2 kHz and μm-resolution. Test results showing the deformation of a masonry building under seismic load are presented. Promising fields of application for this technique are the structural health monitoring sector and chemical process control. T2 - 21st International Conference on Optical Fiber Sensors CY - Ottawa, Canada DA - 15.05.2011 PY - 2011 AN - OPUS4-24930 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bleul, Regina T1 - Polymers in Biomedicine: Molecular Structure and Material Charakteristics T2 - Jahrestagung Deutsche Gesellschaft für Biomaterialien CY - Giessen, Germany DA - 2011-11-10 PY - 2011 AN - OPUS4-24935 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Feigl, Michael T1 - Electrochemical evaluation of corrosion behaviour of sol-gel alumina coated steel AlSl304 and Ni-base alloy Inconel-718 T2 - Eurocorr 2011 CY - Stockholm, Sweden DA - 05.09.2011 PY - 2011 AN - OPUS4-24870 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Tribologisches Verhalten von heiß-isostatisch gepresstem Yttriumtitanat unter oszillierender Gleitbeanspruchung T2 - HLK 2011 CY - Karlsruhe, Germany DA - 2011-10-25 PY - 2011 AN - OPUS4-24872 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drescher, Daniela T1 - Combination of SERS and advanced microscopic methods for the investigation of protein-particle-cell interactions T2 - Workshop "FT-IR Spectroscopy in Microbiological and Medical Diagnostics" CY - Berlin, Germany DA - 2011-10-20 PY - 2011 AN - OPUS4-24888 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Fixation of bioactive calcium phosphate on Ti6AI4V with e femtosecond laser T2 - Jahrestagung der Deutschen Gesellschaft für Biomaterialien (DGBM) CY - Giessen, Germany DA - 2011-11-10 PY - 2011 AN - OPUS4-24893 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dombrowski, Felix T1 - Investigations on degradable and figuline calcium alkaline phosphate cements with multimodal particle size distribution T2 - Bioceramics 23, 23rd. Anual Meeting of Intern. Soc. for Ceramics in Medicine (ISCM) CY - Istanbul, Turkey DA - 2011-11-04 PY - 2011 AN - OPUS4-24861 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dombrowski, Felix T1 - Solubility and ingrowth behavior of degradable and figuline calcium alkaline phosphate cements T2 - Bioceramics 23, 23rd. Anual Meeting of Intern. Soc. for Ceramics in Medicine (ISCM) CY - Istanbul, Turkey DA - 2011-11-04 PY - 2011 AN - OPUS4-24862 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gildenhaar, Renate T1 - Calcium alkaline phosphate scaffolds for bone regeneration 3D-fabricated by additive manufacturing T2 - 23rd Symp. and Annual Meeting of Intern. Soc. for Ceramics in Medicine (ISCM) CY - Istanbul, Turkey DA - 2011-11-04 PY - 2011 N1 - Geburtsname von Wirth, Cynthia: Gomes, C. M. - Birth name of Wirth, Cynthia: Gomes, C. M. AN - OPUS4-24863 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Anika T1 - Experimentelle Untersuchungen einer gegossenen Titanstruktur mit biologischer Reaktionsschicht in vitro T2 - Jahrestagung der Dt. Ges. für Biomaterialien CY - Giessen, Germany DA - 2011-11-10 PY - 2011 AN - OPUS4-24864 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Kontrolle der Vernetzungsreaktion bei reaktiven Harzen - DSC, Rheologie, DMA, FTIR und Online-Ultraschall im Vergleich T2 - Technomer - 22. Fachtagung über Verarbeitung und Anwendung von Polymeren CY - Chemnitz, Germany DA - 2011-11-10 PY - 2011 AN - OPUS4-24900 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Detection Technologies - Common Concepts in Security and Safety T2 - Future Security 2011 (Fraunhofer) CY - Berlin, Germany DA - 2011-09-05 PY - 2011 AN - OPUS4-25089 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaal, Mate T1 - Parameter reproducibility of polypropylene ferroelectret transducers for air-coupled ultrasonic testing T2 - IEEE International Ultrasonics Symposium 2011 CY - Orlando, FL, USA DA - 2011-10-18 PY - 2011 AN - OPUS4-25201 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaal, Mate T1 - Anregung von Lambwellen mit Luftultraschall T2 - Fachmesse "Sensor und Test 2009" CY - Nuremberg, Germany DA - 2009-05-26 PY - 2009 AN - OPUS4-25202 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - SIP@BAM: Spectral Induced Polarisation used at masonry, wood and concrete T2 - Workshop des Arbeitskreises Induzierte Polarisation CY - Denver, CO, USA DA - 2011-10-31 PY - 2011 AN - OPUS4-25018 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lang, Thomas T1 - Study of protein-nanoparticle interactions with FFF and DLS: Concentration dependency of the aggregation process T2 - SPP1313 Workshop 5: The Nanoparticle-Protein Corona: Characterization, impact and biological relevance CY - Mainz, Germany DA - 2011-12-08 PY - 2011 AN - OPUS4-25168 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ortel, Erik A1 - Fischer, A. A1 - Chuenchom, L. A1 - Polte, Jörg A1 - Smarsly, B. A1 - Krähnert, R. T1 - Mesoporous metal oxide films with controlled pore size, wall thickness and pore hierarchy templated by PEO-b-PB-b-PEO triblock copolymers T2 - 24. Deutsche Zeolith- Tagung CY - Magdeburg, Germany DA - 2012-03-07 PY - 2012 AN - OPUS4-25122 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Herstellung eines Halbleiters auf Sol-Gel-Basis für Solarzellenanwendung T2 - Jahrestagung der Deutschen Keramischen Gesellschaft 2012 CY - Nuremberg, Germany DA - 2012-03-05 PY - 2012 AN - OPUS4-25509 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - Entwicklung eines zertifizierten Referenzmaterials für die Lasergranulometrie T2 - Jahrestagung der Deutschen Keramischen Gesellschaft 2012 CY - Nuremberg, Germany DA - 2012-03-05 PY - 2012 AN - OPUS4-25512 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mönch, Bettina T1 - EtG - a biomarker for classifying the alcohol consumption T2 - 6. Internationales Doktorandenseminar CY - Berlin, Germany DA - 2012-02-26 PY - 2012 AN - OPUS4-25515 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Microarrays - Surface Chemical Characterization T2 - Functional Genomics and Proteomics - Applications, Molecular Diagnostics & Next Generation Sequencing CY - Frankfurt am Main, Germany DA - 2012-02-02 PY - 2012 AN - OPUS4-25529 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nooke, Alida T1 - SPR gas monitoring with ellipsometric read-out on thon inorganic layers T2 - 7th Workshop ellipsometry CY - Leipzig, Germany DA - 2012-03-05 PY - 2012 AN - OPUS4-25555 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Änderung der elektronischen Eigenschaften von Kohlenstoffnanoröhren durch Funktionalisierung T2 - 4. Jahrestagung inno.CNT CY - Bayreuth, Germany DA - 2012-01-30 PY - 2012 AN - OPUS4-25485 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfennig, Anja T1 - Corrosion behavior of pipe steels at the CCS-site Ketzin, Germany T2 - 10. Technologietransfertrag CY - Wildau, Germany DA - 2011-06-22 PY - 2011 AN - OPUS4-25492 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reich, Franziska T1 - Der Einsatz von Sicherheitsventilen an Transportbehältern T2 - Transport Logistic 2011 CY - Munich, Germany DA - 2011-04-10 PY - 2011 AN - OPUS4-25493 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zientek, Nicolai T1 - On-line NMR Spectroscopy- RF attenuation of polymer tubes for NMR cells T2 - 6. Interdisziplinäres Doktorandenseminar (GDCh&DECHEMA) CY - Berlin, Germany DA - 2012-02-26 PY - 2012 AN - OPUS4-25562 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Femtosecond laser-induced periodic surface structures generated in different environments T2 - European Materials Research Society (EMRS) Spring Meeting 2012, Symposium V "Laser materials processing for micro and nano applications" CY - Strasbourg, France DA - 2012-05-12 PY - 2012 AN - OPUS4-25521 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Femtosecond laser-induced modification and ablation of hydrogenated amorphous carbon films T2 - European Materials Research Society (EMRS) Spring Meeting 2012, Symposium V "Laser materials processing for micro and nano applications" CY - Strasbourg, France DA - 2012-05-12 PY - 2012 AN - OPUS4-25522 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gärtner, Stefanie T1 - Development of an immunoassay for the anthropogenic marker coprostanol T2 - 6. Interdiziplinäres Doktorandenseminarder GDCh CY - Berlin, Germany DA - 2012-02-26 PY - 2012 AN - OPUS4-25545 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Purohit, Purv T1 - Structure-property relationship of Nanocomposites based on Polylactide and Layered Double Hydroxid T2 - DPG Frühjahrstagung 2012 CY - Berlin, Germany DA - 2012-03-26 PY - 2012 AN - OPUS4-25788 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Purohit, Purv T1 - Structure-property relationship of Nanocomposites based on Polylactide and Layered Double Hydroxide T2 - DPG Frühjahrstagung 2012 CY - Berlin, Germany DA - 2012-03-26 PY - 2012 AN - OPUS4-25790 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pretsch, Thorsten T1 - Smart Tags carrying QR Codes T2 - 2. Berliner Chemiesymposium, Gesellschaft Deutscher Chemiker - JungChemikerForum CY - Berlin, Germany DA - 2012-04-03 PY - 2012 N1 - Geburtsname von Mirtschin, Nikolaus: Fritzsche, N. - Birth name of Mirtschin, Nikolaus: Fritzsche, N. AN - OPUS4-25797 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rauchegger, Christian T1 - Release and Dispersion of Heavy Gases - Experimental Results and Numercial Simulations T2 - 8th Global Congress on Process Safety (GCPS) CY - Houston, TX, USA DA - 2012-04-01 PY - 2012 AN - OPUS4-25806 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - Evidence of click, coordination and side reactions on a self-assenbled monolayer by synchrotron radiation based XPS and NEXAFS T2 - 2. Berliner Chemie Symposium CY - Berlin, Germany DA - 2012-04-03 PY - 2012 AN - OPUS4-25679 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Banach, Ulrich T1 - Long-term stabiltiy of the low energy hydrogen sensor T2 - IMCS 2012 - The 14th International Meeting on Chemical Sensors CY - Nuremberg, Germany DA - 2012-05-20 PY - 2012 AN - OPUS4-25682 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Carbohydrate-functionalized surfaces: Analysis by a multi-method approach T2 - 6. Senftenberger Innovationsforum: Multiparameteranalytik mit zellulären Assays CY - Senftenberg, Germany DA - 2012-03-16 PY - 2012 AN - OPUS4-25683 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Epoxy-functionalized Surfaces: Surface chemical analysis and fluorescence labeling of surface species T2 - 6. Senftenberger Innovationsforum: Multiparameteranalytik mit zellulären Assays CY - Senftenberg, Germany DA - 2012-03-16 PY - 2012 AN - OPUS4-25684 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - Standardisation in the analysis of complex thin film systems with ellipsometry T2 - Workshop Ellipsometry 2012 CY - Leipzig, Germany DA - 2012-03-05 PY - 2012 AN - OPUS4-25685 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pretsch, Thorsten T1 - Actuation behavior of a thermo-responsive elastomer under constant load T2 - E-MRS 2012 Spring Meeting, Symposium Q CY - Strasbourg, France DA - 2012-05-14 PY - 2012 AN - OPUS4-25892 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Taffe, Alexander T1 - Ermittlung von Detektionstiefen an Betonbauteilen mit Radar T2 - Fachtagung Bauwerksdiagnose 2012, Praktische Anwendungen Zerstörungsfreier Prüfungen und Zukunftsaufgaben CY - Berlin, Germany DA - 2012-02-23 PY - 2012 AN - OPUS4-25893 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gonzales-Gago, A. T1 - New approaches for the traceable determination of PBDEs (in coastal water samples) according to the Water Framework Directive (WFD) T2 - 6th SETAC (Society of Environmental Toxicology and Chemistry) World Congress CY - Berlin, Germany DA - 2012-05-20 PY - 2012 AN - OPUS4-25859 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Feistkorn, Sascha T1 - Gütebewertung qualitativer Prüfaufgaben in der ZfPBau am Beispiel des Impulsradars T2 - Fachtagung Bauwerksdiagnose 2012, Praktische Anwendungen Zerstörungsfreier Prüfungen und Zukunftsaufgaben CY - Berlin, Germany DA - 2012-02-23 PY - 2012 AN - OPUS4-25860 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertin, Annabelle T1 - Efficient one-pot synthesis of polymer-coated USPIOs for image-guided nanoparticle-mediated cancer gene therapy T2 - 9th International Conference on the Scientific and Clinical Applications of Magnetic Carriers CY - Minneapolis, MN, USA DA - 2012-05-22 PY - 2012 AN - OPUS4-25916 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Qiao, Linan T1 - Numerical Investigation of a Complex Drop Test Scenario T2 - Radioactive Materials Transport and Storage Conference 2012 CY - London, England DA - 2012-05-23 PY - 2012 AN - OPUS4-25973 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rolle, Annette T1 - Leakage testing of sealed sources T2 - 13th International Congress of the International Radiation Protektion Association CY - Glasgow, Scotland DA - 2012-05-13 PY - 2012 AN - OPUS4-25974 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulze, Dietmar T1 - Ermittlung von Ozonkonzentration in der Prüfung der Ozonbeständigkeit von Elastomeren T2 - TECHNOMER 2009 CY - Chemnitz, Germany DA - 2009-11-12 PY - 2009 AN - OPUS4-25940 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Karsten T1 - Quality Assurance within Drop Testing of Containers for Radioactive Material T2 - RamTransport 2012, 9th International Conference on Radidoactive Material Transport and Storage CY - London, England DA - 2012-05-22 PY - 2012 AN - OPUS4-25960 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weber, Mike T1 - Influence of dense near-surface reinforcement layers in concrete slabs of test stand foundatins T2 - RAMTRANSPORT 2012 CY - London, England DA - 2012-05-22 PY - 2012 AN - OPUS4-25961 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scheidemann, Robert T1 - Dynamic compression tests on damping materials T2 - Radioactive Materials Transport and Storage Conference 2012, RAMTRANS CY - London, England DA - 2012-05-22 PY - 2012 AN - OPUS4-25962 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sojref, Regine T1 - Solvent-based redispersion of fine (<200 nm) corundum powder pre-milled in water T2 - ECerS XII - 12th Conference of the European Ceramic Society CY - Stockholm, Sweden DA - 2011-06-19 PY - 2011 AN - OPUS4-25291 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brackrock, Daniel T1 - Untersuchungen an Vergleichskörper-Reflektoren T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-25296 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neubauer, Andreas T1 - BIMAS - Bildgebende Verfahren und Komponenten für die zerstörungsfreie Materialprüfung unter Einsatz magnetischer Sensorarrays T2 - Öffentliche Statuspräsentation der Verbundprojekte der Bekanntmachung "Magnetische Mikro- und Nanotechnologien" des BMBF CY - Nuremberg, Germany DA - 2011-06-09 PY - 2011 AN - OPUS4-25212 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neubauer, Andreas T1 - NDT-adapted GMR probe with local magnetization unit for MFL testing T2 - 15th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2011) CY - Naples, Italy DA - 2011-09-06 PY - 2011 AN - OPUS4-25213 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Völz, Uwe T1 - Querfehlerprüfung an anisotopen Engspaltschweißnähten mit Gruppenstrahlern T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-25220 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Christina T1 - Molecular dynamics of a discotic liquid chrystal T2 - 76th Annual Meeting of the DPG and DPG Spring Meeting CY - Berlin, Germany DA - 2012-03-25 PY - 2012 AN - OPUS4-25637 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Neutron Scattering on Discotic Liquid Chrystals in the Bulk and in the Nanoconfined State T2 - Frühjahrstagung der DPG CY - Berlin, Germany DA - 2012-03-26 PY - 2012 AN - OPUS4-25619 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Th. T1 - Reaction engeineering aspects of heterogeneously catalyzed oxidations inside the explosion regime in a micro structured reactor T2 - IMRET 12 The International Conferences on Microreaction Technology CY - Lyon, France DA - 2012-02-20 PY - 2012 AN - OPUS4-25584 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Sebastian T1 - Safety aspects of heterogeneously catalysed oxidations inside the explosion region in micro reactors T2 - IMRET 12 The International Conferences on Microreaction Technology CY - Lyon, France DA - 2012-02-20 PY - 2012 AN - OPUS4-25585 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dittrich, Bettina T1 - Born in Fire to Kill Fire T2 - Makromolekulares Kolloquium Freiburg CY - Freiburg, Germany DA - 2012-02-23 PY - 2012 AN - OPUS4-25610 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schartel, Bernhard T1 - FUNgraphen - Vorstellung der Forschungsziele T2 - 4. Jahrestagung inno.CNT CY - Bayreuth, Germany DA - 2012-01-30 PY - 2012 AN - OPUS4-25613 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - von der Ehe, Kerstin T1 - Beständigkeit von (U)HMW-PE unter dem Einfluss von Gammastrahlung T2 - 3. RAM-Behältersicherheitstage, BAM CY - Berlin, Germany DA - 2012-03-22 PY - 2012 AN - OPUS4-25616 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heckel, Thomas T1 - Optimierung von Ultraschall-Fokusprüfköpfen beim Einsatz an stark gekrümmten Oberflächen T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-25337 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gohlke, Dirk T1 - Visualisierung der Volumenmessdaten von hochauflösenden Ultraschalltauchtechnikprüfungen T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-25338 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kotschate, Daniel T1 - Bildgebende Ultraschallhandprüfeinrichtung für die Ausbildung T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-25336 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ploigt, Roy T1 - Schnittstellenkonzepte für digitale Ultraschallprüfgeräte T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-25299 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yin, Huajie T1 - Molecular Dynamics of Miscible Polymer Blend Thin Films T2 - DPG Frühjahrstagung CY - Berlin, Germany DA - 2012-03-25 PY - 2012 AN - OPUS4-25708 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ortel, Erik T1 - Mesopoous metal oxide films with controlled pore size, wall thickness and pore hierarchy templated by PEO-b-PEO triblock copolymers T2 - 24. Deutsche Zeolith -Tagung CY - Magdeburg, Germany DA - 2012-03-07 PY - 2012 AN - OPUS4-25717 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Probst, Ulrich T1 - Plastische Deformation von Federkern-Metalldichtungen in Abhängigkeit von Temperatur und Zeit T2 - 3. RAM-Behältersicherheitstage 2012, BAM CY - Berlin, Germany DA - 2012-03-22 PY - 2012 AN - OPUS4-25659 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nehls, Irene T1 - EtG in Haaren - Biomarker für den Alkoholkonsum T2 - Multiparameteranalytik, Innovationsforum CY - Senftenberg, Germany DA - 2012-03-16 PY - 2012 AN - OPUS4-25663 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mönch, Bettina T1 - EtG in hair - a marker for classifying the alcohol consumption T2 - 2. Berliner Chemie Symposium CY - Berlin, Germany DA - 2012-04-03 PY - 2012 AN - OPUS4-25664 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mann, Guido T1 - Surface damage threshold of multimode fibers and their corresponding preform material for 1064 nm nanosecond laser treatment with varying beam diameter T2 - European Materials Research Society (EMRS) Spring Meeting 2012, Symposium V "Laser Materials Processing for Micro and Nano Application" CY - Strasbourg, France DA - 2012-05-14 PY - 2012 AN - OPUS4-25704 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühn, Julius T1 - A comprehensive Auger electron spectroscopy study on a PdxNiyCo1-x-y-/LaF3/SiO2/Si multi-layer system for H2 detection T2 - 2. Berliner Chemie Symposium CY - Berlin, Germany DA - 2012-04-03 PY - 2012 AN - OPUS4-25687 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Linke, S. T1 - Catalytic properties of continuous gradient ternary palladium alloys T2 - SEMS Graduate Reserarch Show (Queen Mary University London) CY - London, England DA - 2011-10-19 PY - 2011 AN - OPUS4-25688 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bleul, Regina T1 - Functional Polymersomes - Potential Multitool for Targeted Cancer Therapy T2 - Nanomaterials for Biomedical Technologies CY - Frankfurt am Main, Germany DA - 2012-03-06 PY - 2012 AN - OPUS4-25690 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strunck, S. T1 - Tunable Phase Shifter in LTCC Technology with Liquid Crystal T2 - ESA microwave technologies & techniques workshop CY - Noordwijk, Netherlands DA - 2012-05-21 PY - 2012 AN - OPUS4-25695 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gnutzmann, Tanja T1 - Time-resolved investigation of crystallization processes T2 - SPP in-situ Workshop CY - Wismar, Germany DA - 2012-03-28 PY - 2012 AN - OPUS4-25675 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seeger, Stefan T1 - Konzepte zur ISO-Kalibrierung der Messung von Partikelgrößen und Partikelanzahlkonzentrationen T2 - Symposium: Ultrafeine Partikel (UFP) in der städischen Außenluft CY - Berlin, Germany DA - 2012-05-24 PY - 2012 AN - OPUS4-26067 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred T1 - Determination of wood protective agents in a world heritage site church T2 - Indoor Air Quality 2012 (IAQ 2012) CY - London, England DA - 2012-06-17 PY - 2012 AN - OPUS4-26063 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Feldmann, Ines T1 - EDX-Analysis of Paint Layers of Medieval Stained Glass Windows T2 - Synchrotron Radiation in Art and Archaeology (SR2A) CY - New York City, NY, USA DA - 2012-06-05 PY - 2012 AN - OPUS4-26065 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grandke, Julia T1 - Immonoassays for Caffeine T2 - Analytica 2012 CY - Munich, Germany DA - 2012-04-17 PY - 2012 AN - OPUS4-26019 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Trela, Christiane T1 - Positioning accuracy of an automatic scanning system for GPR measurement on concrete structures T2 - The 14th International Conference on Ground Penetrating Radar (GPR) CY - Shanghai, China DA - 2012-06-04 PY - 2012 AN - OPUS4-26023 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Herkunftsbestimmung von Kalken T2 - GDCh Tagung Bauchemie 2011 CY - Hamburg, Germany DA - 2011-10-06 PY - 2011 AN - OPUS4-25952 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Burbank, John Theodore T1 - Reactive boundary layers in metallic rolling contacts N2 - The running-in phase of mechanical systems is critical from a tribological standpoint, because microcracks, a cause of material failure, can appear during this phase of heightened friction and wear. The ultimate goal of this current work is to transfer the running-in phase into the finishing process through the preconditioning of novel, high toughness steel bearings and compare these to conventionally used steels. This has been achieved both through the generation of tribo-reactive films and cold work hardening of the steel surface substrates. Determination of the presence of reactive tribofilms was achieved via SEM-EDX with Element-Mapping, whereas the effects of cold work hardening on the samples were observed through measurement of localized hardness and residual stresses. Both tribofilm-protected samples and cold work hardened samples were then subjected to long term slip-rolling testing (10,000,000 cycles, approximately 19 days) to determine any changes in friction behaviour or wear performance. T2 - Gordon Research Conf.: Tribology CY - Waterville, ME, USA DA - 2012-07-08 PY - 2012 AN - OPUS4-26189 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Protz, Christian T1 - ConDrop - Development of Numerical Simulation Approaches for Drop Test Analyses of Steel Sheet Containers T2 - INMM 53rd Annual Meeting CY - Orlando, FL, USA DA - 2012-07-15 PY - 2012 AN - OPUS4-26138 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Generation, Control and Mechanisms of the Formation of Periodic Surface Structures on the Nanometer Scale Induced by Femtosecond Laser Pulse Irradiation of Solids T2 - Julius Springer Forum for Applied Physics 2012 CY - Berlin, Germany DA - 2012-06-20 PY - 2012 AN - OPUS4-26141 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schultz, C. T1 - Influence on the Mechanical Properties of Sputtered Mo Solar Cell Back Contacts on Laser Scribing T2 - Proceedings of the 27th European Photovoltaic Solar Energy Conference CY - Frankfurt am Main, Germany DA - 2012-09-24 PY - 2012 AN - OPUS4-26142 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - UV-spectroscopic indirekt quantification of functional groups on MWCNTs T2 - Annual World Conference on Carbon 2012 CY - Kraków, Poland DA - 2012-06-17 PY - 2012 AN - OPUS4-26152 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Aichner, Bernhard T1 - Forest soil monitoring of organic pollutants in Germany T2 - EUROSOIL CY - Bari, Italy DA - 2012-07-02 PY - 2012 AN - OPUS4-26158 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ecker, Melanie T1 - Freely configurable Functionalization Tool for switchable Information Carriers T2 - 3rd WMRIF Workshop for Young Materials Scientists, World Materials Research Institutes Forum WMRIF CY - Khlong Luang, Thailand DA - 2012-08-28 PY - 2012 AN - OPUS4-26281 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döring, Joachim T1 - Luftultraschall-Prüfköpfe mit 3kV-Impuls-Ansteuerung T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-26224 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - CFD analysis of peroxy-fuel combustion T2 - 34th International Symposium on Combustion CY - Warsaw, Poland DA - 2012-07-29 PY - 2012 AN - OPUS4-26368 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Komann, Steffen T1 - Assessment of Ductile Cast Iron Fracture Mechanics Analysis within Licensing of German Transport Packages T2 - RAMTRANSPORT 2012, Royal Geographical Society CY - London, England DA - 2012-05-23 PY - 2012 AN - OPUS4-26334 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Komann, Steffen T1 - Prüfung der qualitätssichernden Maßnahmen an Verpackungen püfpflichtiger Versandstücke durch die BAM T2 - 3. RAM-Behältersicherheitstage, BAM CY - Berlin, Germany DA - 2012-03-22 PY - 2012 AN - OPUS4-26335 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Komann, Steffen T1 - Transport of Large Nucklear Power Plant Components - Experiences in Mechanical Desig Assessment - T2 - 3. RAM-Behältersicherheitstage, BAM CY - Berlin, Germany DA - 2012-03-22 PY - 2012 AN - OPUS4-26336 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühn, Julius T1 - Chemical Depth Profiles of Ternary Pd Alloys by HAXPES and First Spectra Simulations T2 - HZB User Metting 2011 CY - Berlin, Germany DA - 2011-12-01 PY - 2011 AN - OPUS4-25060 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - The Coordination of Palladium(II)-ions changes the preferential orientation of pyridyl terminated self-assembled monolayer molecules - A NEXAFS study T2 - Joint BER II and BESSY II User Meeting 2011 CY - Berlin, Germany DA - 2011-12-01 PY - 2011 AN - OPUS4-24984 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gnutzmann, Tanja T1 - Combined in situ synchrotron X-ray diffraction and Raman spetroscopy for the study of crystallization processes T2 - PRORA 2011 - Fachtagung Prozessnahe Röntgenanalytik CY - Berlin, Germany DA - 2011-11-24 PY - 2011 AN - OPUS4-24985 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Die EFNDT Arbeitsgruppe 5 "Öffentliche Sicherheit mit ZfP-Techniken" neu formiert T2 - DGZfP-Jahrestagung 2011, Poster 43 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-25084 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Einstrahlgeometrie und Erkennbarkeit von Objekten in der Röntgenrückstreuradiographie T2 - DGZfP-Jahrestagung 2011, Poster 20 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-25085 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Repositioning of the EFNDT WG 5 T2 - Croatian Society of NDT, MATEST 2011 CY - Split, Croatia DA - 2011-11-02 PY - 2011 AN - OPUS4-25098 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Limited View Tomgraphy of Wood with Fast and Thermal Neutrons T2 - International Symposium on Digital Industrial Radiology and Computed Tomography - Poster 14 CY - Berlin, Germany DA - 2011-06-20 PY - 2011 AN - OPUS4-25100 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wrobel, Norma T1 - Variable irradiation geometry with a nex X-ray backscatter camera for security applications T2 - Future Security 2011 (Fraunhofer) CY - Berlin, Germany DA - 2011-09-05 PY - 2011 AN - OPUS4-25102 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bräutigam, P. T1 - Degradation of the antiepileptic drug carbamazepine by hydrodynamic-acoustic-cavitation T2 - GPE 2011 Malaysia - 3rd International Congress on Green Process Engineering CY - Kuala Lumpur, Malaysia DA - 2011-12-06 PY - 2011 AN - OPUS4-24951 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Charakterisierung von MWCNT T2 - 4. Jahrestagung inno.CNT CY - Bayreuth, Germany DA - 2012-01-30 PY - 2012 AN - OPUS4-25448 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Quantitative chemische Charakterisierung von CNT T2 - 4. Jahrestagung inno.CNT CY - Bayreuth, Germany DA - 2012-01-30 PY - 2012 AN - OPUS4-25449 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Plasmaverfahren zur Funktionalisierung und Reinigung von CNT T2 - 4. Jahrestagung inno.CNT CY - Bayreuth, Germany DA - 2012-01-30 PY - 2012 AN - OPUS4-25455 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lang, Thomas T1 - Multifunctional, polymeric nanoparticles in biological environments T2 - 25th European Colloid and Interface Society meeting (ECIS) CY - Berlin, Germany DA - 2011-09-04 PY - 2011 AN - OPUS4-25387 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Madia, Mauro T1 - Analytical model for fracture mechanics based S-N curve prediction T2 - International Symposium on Fatigue Design and Material Defects CY - Trondheim, Norway DA - 2011-05-23 PY - 2011 AN - OPUS4-25395 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koshkina, Olga T1 - Synthesis and Characterization of Siloxane-Based Nanoparticles for Biomedical Applications T2 - First Reporting Colloquium of DFG SPP1313-2 "Bio-Nano-Responses" CY - Fulda, Germany DA - 2012-02-20 PY - 2012 AN - OPUS4-25471 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Radio-Based Multi-Sensor for Person Tracking and Indoor Positionin T2 - 9th Workshop on Positioning, Navigation and Communication 2012 (WPNC '12) CY - Dresden, Germany DA - 2012-03-15 PY - 2012 AN - OPUS4-26454 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heunisch, Andreas T1 - Fabrication and Characterization of Low Temperature Co-fired Ceramic Multilayer with Embedded Cavities T2 - Junior Euromat 2012 CY - Lausanne, Switzerland DA - 2012-07-23 PY - 2012 AN - OPUS4-26529 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rietz, U. T1 - LUMiFrac - a new centrifuge-based approached for testing of BONDING and ADHESIVE STRENGTH T2 - EURADH 2012, Friedrichshafen CY - Berlin, Germany DA - 2012-09-16 PY - 2012 AN - OPUS4-26727 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gärtner, Stefanie T1 - A direct competitive ELISA for the anthropogenic marker isolithocholic acid T2 - 7th European Conference on Pesticides and Related Organic Micropollutants in the Environment CY - Oporto, Portugal DA - 2012-10-07 PY - 2012 AN - OPUS4-26671 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Linke, S. T1 - Sensor High throuhput screening using photocurrent measurments in silicon T2 - Eurosensors 2012 CY - Kraków, Poland DA - 2012-09-09 PY - 2012 AN - OPUS4-26730 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf T1 - Non-target analysis of emerging contaminants - harnessing antibody selectivity T2 - SETAC 2012 (6th SETAC World Congress and SETAC Europe 22nd Annual Meeting) CY - Berlin, Germany DA - 2012-05-20 PY - 2012 N1 - Geburtsname von Hoffmann, Kristin: Petsch, K. - Birth name of Hoffmann, Kristin: Petsch, K. AN - OPUS4-26648 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf T1 - Vorkommen und Abbauverhalten von Carbamazepin und seinen Metaboliten in Abwasser, Oberflächenwasser und Trinkwasser T2 - GDch/SETAC: Erkennen, Untersuchen, Modellieren - Vom Nutzen des Verstehens; Gemeinsame Jahrestagung von SETAC GLB (German Language Branch) und fachgruppe Umweltchemie und Ökotoxikologie der GDCh CY - Leipzig, Germany DA - 2012-09-10 PY - 2012 AN - OPUS4-26651 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf T1 - Application of an optimized ELISA assay in the assessment of 17?-estradiol levels in surface and waste waters from the Aveiro region T2 - 3rd Portuduese Young Chemists Meeting (3PYCheM) CY - Oporto, Portugal DA - 2012-11-09 PY - 2012 AN - OPUS4-26652 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jechow, Mirko T1 - Dependence of Signal-to-Noise Ratio on Radiation Energy and Grey Value in Digital Industrial Radiology T2 - International symposium on digital industrial radiology and computed tomography, DIR 2011 der DGZfP CY - Berlin, Germany DA - 2011-06-20 PY - 2011 AN - OPUS4-26664 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neugebauer, Michael T1 - On the Fly Quantification of Fluids - Quantitative Online NMR Spectroscopy of Technical Mixtures T2 - 3rd International Workshop for Young Scientists CY - Khlong Luang, Thailand DA - 2012-08-27 PY - 2012 AN - OPUS4-26711 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kitze, Jessica T1 - Ultraschallprüfung mit Matrix-Arrays zur schnellen Fehlerdetektion in Kupferlötschichten T2 - DGZfP-Jahrestagung 2012 CY - Graz, Austria DA - 2012-09-17 PY - 2012 AN - OPUS4-26713 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppe, Enrico T1 - Early damage detection of structural defects using guided lamb waves T2 - Workshop on Civil Structural Health Monitoring (CSHM-4) CY - Berlin, Germany DA - 2012-11-06 PY - 2012 AN - OPUS4-26945 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wosniok, Aleksander T1 - Brillouin-based Fiber Optic Sensor for Geotechnical Monitoring Applications T2 - Workshop on Civil Structural Health Monitoring Applications (CSHM-4) CY - Berlin, Germany DA - 2012-11-06 PY - 2012 AN - OPUS4-26946 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf T1 - Emission study of furniture boards for the next version of the German eco label "Blue Angel" for wood and wooden products (RAL-UZ 38) T2 - 10th International Conference Healthy Buildings 2012 CY - Brisbane, Australia DA - 2012-07-08 PY - 2012 AN - OPUS4-26947 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ewert, Uwe T1 - Die Rolle der ZfP-Zuverlässigkeitsanalyse für sicheres Produktdesign Multiparameter-PODt T2 - DGZfP-Jahrestagung CY - Graz, Austria DA - 2012-09-17 PY - 2012 AN - OPUS4-26994 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinholz, Uwe T1 - First experience with a Tandetron as proton injector for eye turnor therapy T2 - Symposium North Eastern Accelerator Personnal 2012 CY - Legnaro, Italy DA - 2012-10-01 PY - 2012 AN - OPUS4-26929 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Miccoli, Lorenzo T1 - Vergleich und Modellierung der mechanischen Eigenschaften von Bauteilen aus Lehmsteinmauerwerk, Wellerlehm und Stampflehm T2 - 6th International Conference on Building with Earth LEHM 2012 CY - Weimar, Germany DA - 2012-10-05 PY - 2012 AN - OPUS4-26959 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quercetti, Thomas T1 - Instrumented Measurements on Radioactive Waste Disposal Containers During Experimental Drop Testing T2 - ICEM 2011 - 14th International Conference on Environment Remediation and Radioactive Waste Management CY - Reims, France DA - 2011-09-25 PY - 2011 AN - OPUS4-26952 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Methoden zur Charakterisierung von Nanopartikeln in wässriger Suspension T2 - Nano-Additive, BAM CY - Berlin, Germany DA - 2012-11-19 PY - 2012 AN - OPUS4-26954 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erthner, Thomas T1 - Miniaturisierte Mehrkanalelektronik für die magnetische Streuflussprüfung T2 - DGZfP-Jahrestagung 2012 CY - Graz, Austria DA - 2012-09-17 PY - 2012 AN - OPUS4-27684 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Entwicklung einer on-line tauglichen Methode zur Bestimmung von Methanol in Biodiesel (FAME) basierend auf NIR Spektroskopie T2 - 8. Kolloquium Prozessanalytik CY - Berlin, Germany DA - 2012-12-03 PY - 2012 AN - OPUS4-27648 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühn, Julius T1 - Composition and Chemistry of a Pd-Ni-Co alloy studied by HAXPES T2 - HZB Users Meeting 2012 CY - Berlin, Germany DA - 2012-12-12 PY - 2012 AN - OPUS4-27649 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Femtosecond laser pulse modification of binary lithium silicate glasses T2 - International workshop on "Laser micro and nano structuring: Fundamentals et applications" CY - Paris, France DA - 2012-12-10 PY - 2012 AN - OPUS4-27660 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yin, Huajie T1 - Calorimetric Glass Transition of Thin Miscible Polymer Blend (PVME/PS) Films T2 - 15th International Conference "Polymeric Materials" CY - Halle (Saale), Germany DA - 2012-09-12 PY - 2012 AN - OPUS4-26501 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yin, Huajie T1 - Dielectric Study of Miscible Polymer Blend Thin Films (PS/PVME) T2 - 7th Conference of the International Dielectric Society CY - Leipzig, Germany DA - 2012-09-03 PY - 2012 AN - OPUS4-26502 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Stabilisierung von Grundwasserproben für die Wasseranalytik T2 - DECHEMA Jahrestagung "Sanierung" CY - Frankfurt am Main, Germany DA - 2012-11-26 PY - 2012 AN - OPUS4-26442 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Christina T1 - Molecular dynamics of a discotic liquid crystal T2 - 7th Conference of the International Dielectric Society CY - Leipzig, Germany DA - 2012-09-03 PY - 2012 AN - OPUS4-26487 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Investigation of Crosslinking and degradation process by infrared Spectroscopy T2 - 4th bilateral Symposium on heterocyclic and heterochain polymers for advanced materials CY - Iasi, Romania DA - 2012-09-03 PY - 2012 AN - OPUS4-26493 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Daum, Werner T1 - Sensitive pultrudierte Tragwerke N2 - - Innovative Konstruktionskonzepte für den Leichtbau verwenden neue Material-Kombinationen - Erweiterte Anwendung der Sensortechnik bei der Entwicklung neuer Materialen - Integration von Sensoren in die Struktur, um synergetische Effekte effizienter auszunutzen und Eigenschaften zu steuern T2 - 2. TSB-TransferTreff "Materialeffizienz und Gestaltung" CY - Berlin, Germany DA - 11.06.2012 PY - 2012 AN - OPUS4-26464 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Metrology for Monitoring Infectious Diseases, Antimicrobial Resistance, and Harmful Micro-Organisms T2 - 30th IFBLS World Congress (International Federation of Biomedical Laboratory Science) CY - Berlin, Germany DA - 2012-08-18 PY - 2012 AN - OPUS4-26555 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hösl, Simone T1 - Development and application of metal-tagged antibodies for efficient diagnostic methods T2 - 11th European Workshop on Laser Ablation CY - Gijón, Spain DA - 2012-06-16 PY - 2012 N1 - Geburtsname von Hösl, Simone: Hardt, S. - Birth name of Hösl, Simone: Hardt, S. N1 - Geburtsname von Müller, Larissa: Wäntig, L. - Birth name of Müller, Larissa: Wäntig, L. AN - OPUS4-26473 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bierkandt, Frank T1 - Quantitative Analysis of Phosphorylated Proteins with LA-ICP-MS T2 - 11th European Workshop on Laser Ablation CY - Gijón, Spain DA - 2012-06-16 PY - 2012 AN - OPUS4-26476 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertin, Annabelle T1 - Effect of multivalent biocompatible (macro)molecules on the one-pot synthesis of nanoparticles for biomedical applications T2 - 2nd International Symposium on "Multivalency in Chemistry and Biochemistry" CY - Berlin, Germany DA - 2012-10-18 PY - 2012 AN - OPUS4-26787 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mizuno, Yosuke T1 - Brillouin gain spectrum characterization in POF fabricated by different manifactures at 1.32 and 1.55 micrometers T2 - 21st International Conference on Plastic Optical Fibers, POF 2012 CY - Atlanta, GA, USA DA - 2012-09-10 PY - 2012 AN - OPUS4-26794 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wendt, Mario T1 - Using optical POF switches for distributed fiber optical strain measurements T2 - 21st International Conference on Plastic Optical Fibers, POF 2012 CY - Atlanta, GA, USA DA - 2012-09-10 PY - 2012 AN - OPUS4-26795 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wosniok, Aleksander T1 - Brillouin gain spectrum characterization for temperature compensation in fiber optic distributed strain T2 - 22nd International Conference on Optical Fiber Sensors CY - Beijing, China DA - 2012-10-15 PY - 2012 AN - OPUS4-26796 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Früherkennung von Strukturschäden mittels geführter Lamb-Wellen T2 - Sensor + Test 2012 CY - Nuremberg, Germany DA - 2012-05-22 PY - 2012 AN - OPUS4-26797 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bajer, Kamila T1 - Influence of polyamide (PA 6) during sterilization of biomedical devices T2 - MODEST 2012 CY - Prague, Czech Republic DA - 2012-09-02 PY - 2012 AN - OPUS4-26799 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Early damage detection of structural defects using guided waves T2 - 6th European Workshop on Structural Health Monitoring - Structural Health Monitoring 2012 CY - Dresden, Germany DA - 2012-07-03 PY - 2012 AN - OPUS4-26800 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppe, Enrico T1 - Device concept for the generation of guided waves for early damage detection T2 - Eurosensors XXVI CY - Kraków, Poland DA - 2012-09-09 PY - 2012 AN - OPUS4-26802 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - Adaptive gas source localization strategies and gas distribution mapping using a gas-sensitive micro-drone T2 - 16. GMA/ITG-Fachtagung Sensoren und Messsysteme 2012 CY - Nuremberg, Germany DA - 2012-05-22 PY - 2012 AN - OPUS4-26809 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sterthaus, Jens T1 - Numerical Analysis of Bolted Trunnion Systems of Type B(U) Packages T2 - RAMTRANSPORT 2012 CY - London, England DA - 2012-05-22 PY - 2012 AN - OPUS4-26810 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosemann, P. T1 - Qualitätsbeurteilung von Schneidwaren mittels Elektrochemischen Rauschen T2 - GfKORR-Jahrestagung 2012 CY - Frankfurt am Main, Germany DA - 2012-11-06 PY - 2012 AN - OPUS4-27047 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank T1 - Performance of dangerous goods tanks in a fire T2 - ASME Intrnational Mechanical Congress and Exposition CY - Houston, TX, USA DA - 2012-11-09 PY - 2012 AN - OPUS4-27082 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmigalla, Sven T1 - Bestimmung kritischer Lochkorrosionstemperaturen für NiCrMo-Legierungen mittels elektrochemischer Rauschmessungen T2 - GfKORR-Jahrestagung 2012 CY - Frankfurt am Main, Germany DA - 2012-11-06 PY - 2012 AN - OPUS4-27048 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Babutzka, Martin T1 - Qualitätsbeurteilung von Schneidwaren mittels KorroPad T2 - GfKORR-Jahrestagung 2012 CY - Frankfurt am Main, Germany DA - 2012-11-06 PY - 2012 AN - OPUS4-27049 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Doroshtnasir, Manoucher T1 - Volumenbestimmung an gasdurchflossenen Düsen mit Thermografie T2 - DGZfP-Jahrestagung CY - Graz, Austria DA - 2012-09-17 PY - 2012 AN - OPUS4-27022 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Regina T1 - Untersuchungen zur 2D- und 3D-Rekonstruktion von Rückwandgeometrien in der Impuls-Thermografie T2 - DGZfP-Jahrestagung CY - Graz, Austria DA - 2012-09-17 PY - 2012 AN - OPUS4-27023 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Skender, Marina T1 - The multiparameter- POD applied in detection of the defects in the environment of nonhomogeneousultrasound attenuation T2 - The Review of Progress in Quantitative Nondestructive Evaluation (QNDE) CY - Denver, CO, USA DA - 2012-07-15 PY - 2012 AN - OPUS4-27015 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Poltavtseva, Marina T1 - Mechanism of corrosion protection of aluminium clad materials at the example of Alclad 6025 T2 - Eurocorr 2012 CY - Istanbul, Turkey DA - 2012-09-09 PY - 2012 AN - OPUS4-26586 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ramge, Peter T1 - Entwicklung modularer Steinersatzmassen für Instandsetzung und Reprofilierung von Naturstein im denkmalgeschützten Bereich T2 - 18. Internationale Baustofftagung CY - Weimar, Germany DA - 2012-09-12 PY - 2012 AN - OPUS4-26558 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Poli, Marco T1 - Sicherheitsrelevante Parameter und Kenngrößen bei beschleunigten Explosionsdruckentlastungen von Gasen T2 - ProcessNet-Jahrestagung und 30. DECHEMA-Jahrestagung der Biotechnologen 2012 CY - Karlsruhe, Germany DA - 2012-09-10 PY - 2012 AN - OPUS4-26559 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lischka, Susanne T1 - Isotopic labelled standard for the routine analysis of arenobetaine T2 - IICS - 24th International Ion Chromatography Symposium CY - Berlin, Germany DA - 2012-09-18 PY - 2012 AN - OPUS4-26569 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ortwein, Hans-Peter T1 - Investigation of infinite life in fiber-reinforced-plastics by non-destructive monitoring of micro structural damage processes with x-ray-refraction T2 - MSE 2012 CY - Darmstadt, Germany DA - 2012-09-25 PY - 2012 AN - OPUS4-26609 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bavendiek, K. T1 - Effektive Brennfleck-Größen von Röntgenrähren bestimmen - neue Verfahren, Änderungen der Normen T2 - DACH Jahrestagung der DGZfP CY - Graz, Austria DA - 2012-09-17 PY - 2012 AN - OPUS4-26616 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Babutzka, Martin T1 - Electrochemical noise measurements in aqueous paint suspensions T2 - Eurocorr 2012 CY - Istanbul, Turkey DA - 2012-09-09 PY - 2012 AN - OPUS4-26587 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Füllbrandt, Marieke T1 - Probing the internal morphology of different poly(N-isopropylacrylamide) systems by dielectric spectroscopy T2 - BDS 2012 (Broadband Dielectric Spectroscopy and its Applications) CY - Leipzig, Germany DA - 2012-09-03 PY - 2012 AN - OPUS4-26862 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Füllbrandt, Marieke T1 - Probing the Thermal Collapse of Linear and Crosslinked Poly(N-isopropylacrylamide) by Dielectric Spectroscopy T2 - 19th Ostwald Kolloquium CY - Berlin, Germany DA - 2012-09-20 PY - 2012 AN - OPUS4-26863 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - Tailored interphase design - the key for effective application in the field of metal-polyolefin composites T2 - 11th APCPST (Asia Pacific Conference on Plasma Science and Technology) and 25th SPSM (Symposium on Plasma Science for Materials) CY - Kyoto, Japan DA - 2012-10-02 PY - 2012 AN - OPUS4-26864 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wosniok, Aleksander T1 - Brillouin gain spectrum characteristics for temperature compensation in fiber optic distributed strain T2 - 22nd International Conference on Optical Fiber Sensors (OFS-22) CY - Beijing, China DA - 2012-10-15 PY - 2012 AN - OPUS4-26908 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehnik-Habrink, Petra T1 - Multi-residue analysis of pesticides and other pollutants in forest soil in Germany T2 - 7th European conference on pesticides and related organic micropollutants in the environment CY - Oporto, Portugal DA - 2012-10-08 PY - 2012 AN - OPUS4-26847 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Structure property relationship of nanocomposites based on Polylactide and Layered Double Hydroxide T2 - Broadband Dielectric Spectroscopy and its Applications CY - Leipzig, Germany DA - 2012-09-03 PY - 2012 AN - OPUS4-26880 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Multifunctional Sensor for Monitoring of CO2 Underground Storage by Comprehensive and Spatially Resolved Measuring of Gas Concentrations, Temperature, and Structural Changes T2 - Greenhouse Gas Control Technologies (GHGT-11) Conference CY - Kyoto, Japan DA - 2012-11-18 PY - 2012 AN - OPUS4-26885 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - Monitoring of CCS Areas Using Micro Unmanned Aerial Vehicles (MUAVs) T2 - Greenhouse Gas Control Technologies (GHGT-11) Conference CY - Kyoto, Japan DA - 2012-11-18 PY - 2012 AN - OPUS4-26886 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Duffner, Eric T1 - Überwachung der Fertigungsqualität von Faserverbund-Druckbehälern mittels Schallemissionsprüfung T2 - Materialica 2012 CY - Munich, Germany DA - 2012-10-23 PY - 2012 AN - OPUS4-26892 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Martin T1 - Entwicklung und Validierung einer Race Track Probe (RT P) Development and validation of a racetrack specimen T2 - Materialica 2012 CY - Munich, Germany DA - 2012-10-23 PY - 2012 AN - OPUS4-26894 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schultz, C. T1 - Influence of the Mechanical Properties of Sputtered Mo Solar Cell Back Contacts on Laser Scribing T2 - Proceedings of the 27th European Photovoltaic Solar Energy Conference CY - Frankfurt am Main, Germany DA - 2012-09-24 PY - 2012 AN - OPUS4-26856 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Ansätze zur quantitativen chemischen Charakterisierung von Kohlenstoffnanoröhren T2 - Fachtagung Nano-Additive CY - Berlin, Germany DA - 2012-11-19 PY - 2012 AN - OPUS4-27167 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Girard-Lauriault, P.-L. T1 - Chemical Characterization of the Ageing of Nitrogen-rich Plasma Polymer Films under Various Ambient Conditions T2 - 13th International Conference on Plasma Surface Engineering CY - Garmisch-Partenkirchen, Germany DA - 2012-09-10 PY - 2012 AN - OPUS4-27143 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, Jens T1 - POF Sensors for Personal Protective Equipment (PPE) T2 - 21st International Conference on Plastic Optic Fibers CY - Atlanta, GA, USA DA - 2012-09-10 PY - 2012 AN - OPUS4-27179 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Holzweber, Markus T1 - BAM-L200: Anew type of refrence material for the determination of lateral resolution and the calibration of length scale T2 - Fachtagung Nano-Additive CY - Berlin, Germany DA - 2012-11-19 PY - 2012 AN - OPUS4-27182 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Plasmaverfahren zur Funktionalisierung und Reinigung von Kohlenstoffnanoröhren T2 - Fachtagung Nano-Additive CY - Berlin, Germany DA - 2012-11-19 PY - 2012 AN - OPUS4-27168 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liehr, Sascha T1 - Fiber optic bend and temperature sensing in femtosecond laserstructured POF T2 - 22nd International Conference on Optica Fiber Sensors (OFS-22) CY - Beijing, China DA - 2012-10-15 PY - 2012 AN - OPUS4-27174 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuchenbecker, Petra T1 - Der Zugversuch an grünen Folien und Laminaten T2 - Jahrestagung der Deutschen Keramischen Gesellschaft 2013 CY - Weimar, Germany DA - 2013-03-18 PY - 2013 AN - OPUS4-27904 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mishra, Kirti Bhushan T1 - Peroxy-fuels: potential applications in combustion engines T2 - 11th International Congress on Engine Combustion Processes - Current Problems and Modern Techniques CY - Ludwigsburg, Germany DA - 2013-03-14 PY - 2013 AN - OPUS4-27874 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Staude, Andreas T1 - Evidencing the hierachical structure of archaeological ivory at micro and nanoscale and its evolution over time by means of combined µ-SAXS/WAXS, µPIXE and µ-CT T2 - Gordon Research Conference: Scientific Methods in Cultural Heritage CY - Mount Snow Resort, West Dover, VT, USA DA - 2012-07-29 PY - 2012 AN - OPUS4-27877 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Am Ende des Life-Cycle-Assessments von CNT: Freisetzung aus Produkten und Ökotoxizität? T2 - Jahreskongress Innovationsallianz Carbon Nanotubes CY - Fellbach, Germany DA - 2013-02-20 PY - 2013 AN - OPUS4-27889 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhne, Robert T1 - A competitive hapten microarray for the parallel analysis of anthropogenic markers in water samples T2 - 8. Deutsches BioSensor Symposium CY - Wildau, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-27853 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Einfluss von Brandbeschleunigern bei Wohnzimmerbränden und deren Nachweis T2 - Ulm-Freiberger Kalorimetrietage 2013 CY - Freiberg, Germany DA - 2013-02-27 PY - 2013 AN - OPUS4-27829 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Modelling of curing behaviour of epoxy resin based on DSC data T2 - 7th International Thermoset Conference CY - Iserlohn, Germany DA - 2013-04-17 PY - 2013 AN - OPUS4-27838 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolf, Julia T1 - Grundlagenuntersuchungen von neuartigen US-Sensoren in Beton T2 - 73. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG) CY - Leipzig, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27863 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yin, Huajie T1 - Calorimetric glass transition of ultrathin films of homopolymers and their and their blends T2 - 7th International Discussion Meeting on Relaxations in Complex Systems CY - Barcelona, Spain DA - 2013-07-21 PY - 2013 AN - OPUS4-28844 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yin, Huajie T1 - Glass transition and segmental dynamics of ultrathin polycarbonate and polystyrene films T2 - 7th International Discussion Meeting on Relaxations in Complex Systems CY - Barcelona, Spain DA - 2013-07-21 PY - 2013 AN - OPUS4-28845 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kasparek, Eva Maria T1 - Simulationen von stoßdämpfenden Werkstoffen unter dem Aufprall von Fallgewichten T2 - KONTEC 2013, 11. Internationales Symposium "Konditionierung radioaktiver Betriebs- und Stilllegungsabfällen" CY - Dresden, Germany DA - 2013-03-13 PY - 2013 AN - OPUS4-28824 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bovtun, V. T1 - Dynamic crossover from viscoelastic to linear elastic behaviour of polypropylenebased ferroelectret films T2 - 7th International Discussion Meeting on Relaxations in Complex Systems CY - Barcelona, Spain DA - 2013-07-21 PY - 2013 AN - OPUS4-29060 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Janine T1 - Optimierung einer Festphasenextraktionsmethode zur Quantifizierung von Tributylzinn mittels ID-GC-ICPMS durch ein "Design of Experiment" T2 - CIA 2013 CY - Berlin, Germany DA - 2013-09-18 PY - 2013 AN - OPUS4-29063 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Elordui-Zapatarietxe, S. T1 - Selection of suitable containers for the preparation of candidate reference materials (RMs) for organic priority substances in natural waters T2 - EURONANALYSIS 2013 CY - Warsaw, Poland DA - 2013-08-25 PY - 2013 AN - OPUS4-29064 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Priebe, Nsesheye Susan T1 - Use of innovative technology in cement production for Africa's available resources T2 - 18. IBAUSIL- Internationale Baustofftagung CY - Weimar, Germany DA - 2012-09-12 PY - 2012 N1 - Geburtsname von Priebe, Nsesheye Susan: Msinjili, N. S. - Birth name of Priebe, Nsesheye Susan: Msinjili, N. S. AN - OPUS4-29022 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baier, Jennifa T1 - Validierung der Plasmabeständigkeit von monodispersen und funktionalisierten Partikeln T2 - Thementage Grenz- und Oberflächentechnik CY - Zeulenroda-Triebes, Germany DA - 2013-09-03 PY - 2013 AN - OPUS4-29029 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Babutzka, Martin T1 - A user-friendly method to determine the pitting corrosion behavior of cutlery products made of martensitic stainless steels T2 - EUROCORR 2013 CY - Estoril, Portugal DA - 2013-09-01 PY - 2013 AN - OPUS4-29047 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - Production and certification of Pd and Pt single spikes T2 - Goldschmidt Conference 2013 CY - Florence, Italy DA - 2013-08-25 PY - 2013 AN - OPUS4-29084 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosner, M. T1 - Approaching realistic measurement uncertainty of Delta11B data T2 - Goldschmidt Conference 2013 CY - Florence, Italy DA - 2013-08-25 PY - 2013 AN - OPUS4-29085 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Menzel, Michael T1 - Influence on the Coordination Sphere of Fe(III) Spin Crossover Compounds T2 - International Conference on the Application of the Mössbauer Effect (ICAME 2013) CY - Opatija, Croatia DA - 2013-09-01 PY - 2013 AN - OPUS4-28989 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nai, Corrado T1 - Physiological Characterization and Synthetic Medium Development for a Model Rock-Inhabiting Black Fungus T2 - VAAM 2012 CY - Tübingen, Germany DA - 2012-03-18 PY - 2012 AN - OPUS4-28926 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wartig, K.-A. T1 - Functionalized graphene as carbon nanofiller for improving mechanical, electrical and flame retardant properties of polypropylene T2 - Eurofillers 2013 CY - Bratislava, Slovakia DA - 2013-08-25 PY - 2013 AN - OPUS4-28991 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oberleitner, Lidia T1 - Fluorescense Polarization Immunoassays for Caffeine T2 - Euroanalysis 2013 CY - Warsaw, Poland DA - 2013-08-25 PY - 2013 AN - OPUS4-28995 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gärtner, Stefanie T1 - Challenges in the antibody production for the phthalate substitute DINCH T2 - XVII euroANALYSIS CY - Warsaw, Poland DA - 2013-08-25 PY - 2013 AN - OPUS4-28996 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gärtner, Stefanie T1 - Immunoassays for the anthropogenic marker isolithocholic acid T2 - Pharmaceutical Products in the Environment - Is there a problem?" CY - Nimes, France DA - 2013-06-03 PY - 2013 AN - OPUS4-28942 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhne, Robert T1 - A multiplex hapten microarray for environmental analysis T2 - 28. Tag der Chemie CY - Potsdam, Germany DA - 2013-06-27 PY - 2013 AN - OPUS4-28945 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oberleitner, Lidia T1 - Fluorescense Polarization Immunoassays for Carbamazepine T2 - 24th Symposium on Pharmaceutical and Biomedical Analysis CY - Bologna, Italy DA - 2013-06-30 PY - 2013 AN - OPUS4-28946 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dörfel, Ilona T1 - TEM Investigations of Alumina Coatings after Corrosion Experiments T2 - MC2013 CY - Regensburg, Germany DA - 25.08.2013 PY - 2013 AN - OPUS4-29169 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pelkner, Matthias T1 - Zerstörungsfreie Prüfung von Lagerschalenringen T2 - Hannover Messe 2013 CY - Hanover, Germany DA - 2013-04-08 PY - 2013 AN - OPUS4-29116 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pelkner, Matthias T1 - Automatisierte Streuflussprüfung von Zylinderlagerringen mit GMR-Sensoren T2 - 10. VDI-Fachtagung Gleit- und Wälzlagerungen CY - Schweinfurt, Germany DA - 2013-04-23 PY - 2013 AN - OPUS4-29120 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - Development of the Certified Reference Material BAM-D001 for Particle Size Measurement by Laser Diffraction Methods T2 - 1. International Scientific Conference "Reference Materials in Measurement and Technology" CY - Yekaterinburg, Russia DA - 2013-09-10 PY - 2013 AN - OPUS4-29143 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfennig, Anja T1 - Influence of pressure, CO2 and cromium-content of injection pipe steels on the reliability of a saline aquifer water CCS-site in the Northern German Basin T2 - Green House Gase Emission Reduction Technologies Conference (GHGT11) CY - Kyoto, Japan DA - 2012-11-18 PY - 2012 AN - OPUS4-27936 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfennig, Anja T1 - Corrosion fatigue behavior and S-N-curve of AiSi 420 exposed to CCS-environment obtained from laboratory in-situ-experiments T2 - Green House Gase Emission Reduction Technologies Conference (GHGT11) CY - Kyoto, Japan DA - 2012-11-18 PY - 2012 AN - OPUS4-27937 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pelkner, Matthias T1 - Automatisierte Streuflussprüfung und Bewertung von Zylinderlagerringen unter Anwendung von GMR-Sensorarrays T2 - DACH-Tagung (DGZfP-Jahrestagung) CY - Graz, Austria DA - 2012-09-17 PY - 2012 AN - OPUS4-27943 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kaudelka, Sven T1 - Berechnung der äquivalenten Branddauer unter Anwendung numerischer Methoden der Strömungs- und Strukturmechanik und Vergleich mit dem normativen Ansatz T2 - 3. Magdeburger Brand- und Explosionsschutztag CY - Magdeburg, Germany DA - 2013-03-21 PY - 2013 AN - OPUS4-27923 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Sebastian T1 - Accuracy of 9Be-data and its influence in 10Be cosmogenic nuclide data T2 - 24. Seminar Aktivierungsanalyse und Gammaspektroskopie (SAAGAS) CY - Garching, Germany DA - 2013-02-26 PY - 2013 AN - OPUS4-27969 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kusche, Nadine T1 - Field example for optical fibre sensor condition diagnostics based on distributed fibre-optic strain sensing T2 - EWOFS 2013 CY - Kraków, Poland DA - 2013-05-19 PY - 2013 AN - OPUS4-27970 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Janine T1 - GC-ICP-MS-Optimierungen zum Nachweis von TBT in Realwasserproben entsprechend der EU-Wasserrahmenrichtlinie "WFD 2000/06/EC" T2 - 46. Jahrestagung der Deutschen Gesellschaft für Massenspektrometrie CY - Berlin, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-27971 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Börno, Fabian T1 - Laser Ablation induktiv gekoppeltes Plasma Massenspektrometrie von Plastikmaterialien T2 - 46. Jahrestagung der Deutschen Gesellschaft für Massenspektrometrie CY - Berlin, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-27974 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Larissa T1 - Multi-parametric microarray for protein profiling T2 - Proteomic Forum 2013 CY - Berlin, Germany DA - 2013-03-17 PY - 2013 N1 - Geburtsname von Müller, Larissa: Wäntig, L. - Birth name of Müller, Larissa: Wäntig, L. AN - OPUS4-27964 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kusche, Nadine T1 - Field examples for optical fibre sensor condition diagnostics based on distributed fibre-optic strain sensing T2 - EWOFS 2013 CY - Kraków, Poland DA - 2013-05-19 PY - 2013 AN - OPUS4-27968 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mevel, L. T1 - Subspace methods for blind identification of structural dynamics T2 - Colloquium Rennais des Sciences du Numerique CY - Rennes, France DA - 2013-04-17 PY - 2013 AN - OPUS4-28068 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühn, Julius T1 - Composition and Chemistry of a Pd-Ni-Co alloy studied by HAXPES T2 - 15. JCF-Frühjahrsymposium CY - Berlin, Germany DA - 2013-03-06 PY - 2013 AN - OPUS4-28042 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Femtosecond laser-induced removal of antireflection coatings from textured silicon wafers T2 - SiliconPV 2013, 3rd International Conference on Crystalline Silicon Photovoltaics CY - Hamelin, Germany DA - 2013-03-25 PY - 2013 AN - OPUS4-28049 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Sabine T1 - Seismic Imaging Applied to Ultrasonic Echo Data T2 - SAGEEP 2013 CY - Denver, CO, USA DA - 2013-03-17 PY - 2013 AN - OPUS4-28055 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bierkandt, Frank T1 - Laserablation-ICP-MS analysis of cell lysates after silver nanoparticle treatment: Is quantification possible? T2 - European Winter Conference on Plasma Spectrochemistry CY - Kraków, Poland DA - 2013-02-10 PY - 2013 AN - OPUS4-28036 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bierkandt, Frank T1 - Quantitative Analyse phosphorylierter Proteine mittels LA-ICP-MS T2 - 46. Jahrestagung der Deutschen Gesellschaft für Massenspektrometrie CY - Berlin, Germany DA - 2013-03-10 PY - 2013 N1 - Geburtsname von Müller, Larissa: Wäntig, L. - Birth name of Müller, Larissa: Wäntig, L. AN - OPUS4-28038 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus T1 - Übersicht über die neuen Methoden zur Oberflächenfunktionalisierung T2 - Jahreskongress Innovationsallianz Carbon Nanotubes CY - Fellbach, Germany DA - 2013-02-20 PY - 2013 AN - OPUS4-28028 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marzok, Ulrich T1 - Hochtemperatur-Laserprofilometer für keramische Proben T2 - DKG-Jahrestagung 2012 CY - Nuremberg, Germany DA - 2012-03-05 PY - 2012 AN - OPUS4-27318 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Metzinger, Anikó T1 - Folyadékminták LIBS mérésére szolgáló mintael?készítési módszerek összehasonlítása T2 - 55. Magyar Spektrokemiai Vándorgyules CY - Veszprém, Hungary DA - 2012-07-09 PY - 2012 AN - OPUS4-27303 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bleul, Regina T1 - Functional Polymersomes - Potential Multi-Tool for Targeted Cancer Therapy T2 - NanoBiomed 2012 - Nanomaterials for Biomedical Technologies CY - Frankfurt am Main, Germany DA - 2012-03-06 PY - 2012 AN - OPUS4-27310 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eslahian, Kyriakos-Alexandros T1 - Colloid-solvent interactions characterized by Thermal Field-Flow Fractionation T2 - Polydays 2012 CY - Berlin, Germany DA - 2012-09-30 PY - 2012 AN - OPUS4-27311 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bleul, Regina T1 - Magnetic Polymersomes - Multifunctional Carriers for Biomedical Applications T2 - Magnetic Carrier Meeting CY - Minneapolis, MN, USA DA - 2012-05-21 PY - 2012 AN - OPUS4-27315 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hösl, Simone T1 - Development and application of metal-tagged antibodies for efficient diagnostic methods T2 - 11th European Workshop on Lasern Ablation CY - Gijón, Spain DA - 2012-06-18 PY - 2012 N1 - Geburtsname von Hösl, Simone: Hardt, S. - Birth name of Hösl, Simone: Hardt, S. AN - OPUS4-27351 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Das Verständnis von Risiko und dessen Einschätzung T2 - DACH-Jahrestagung DGZfP CY - Graz, Austria DA - 2012-09-17 PY - 2012 AN - OPUS4-27497 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rohwetter, Philipp T1 - Faseroptische Sensoren zur akustischen Detektion von Teilentladungen in hochspannungstechnischen Anlagen und Betriebsmitteln T2 - VDE-ETG-Tagung Diagnostik Elektrischer Betriebsmittel CY - Fulda, Germany DA - 2012-11-15 PY - 2012 AN - OPUS4-27484 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rohwetter, Philipp T1 - All fibre-optic simultaneous detection of optical and acoustic emission from partial discharges in silicone elastomer T2 - 22nd International Conference on Optical Fiber Sensors OFS 2012 CY - Beijing, China DA - 2012-10-15 PY - 2012 AN - OPUS4-27485 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf T1 - Degradation of carbamazepine in environmentally relevant concentrations in water by Hydrodynamic-Acoustic-Cavitation (HAC) T2 - 3rd International Conference on Sustainable Pharmacy CY - Osnabrück, Germany DA - 2012-11-19 PY - 2012 AN - OPUS4-27471 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Trela, Christiane T1 - Radarmessungen mit Constant-Offset zur Untersuchung von Strukturschwächungen in Betonbauteilen T2 - 73. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG) CY - Leipzig, Germany DA - 2013-03-04 PY - 2013 UR - http://www.ufz.de/export/data/425/46632_DGG_2013_Tagungsprogramm_und_Abstracts.pdf AN - OPUS4-27802 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oberleitner, Lidia T1 - Application and evaluation of carbamazepine immunoassays T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27814 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gärtner, Stefanie T1 - Antibodies for the anthropogenic marker isolithocholic acid and their application in ELISA and microarrays T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27815 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, Andreas T1 - Bestimmung von Gallensäuren mittels HPLC-MS/MS T2 - 8. Deutsches BioSensor Symposium CY - Wildau, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-27816 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pelkner, Matthias T1 - Design und Charakterisierung ZfP-angepasster GMR-Sensorarrays T2 - DACH-Tagung (DGZfP-Jahrestagung) CY - Graz, Austria DA - 2012-09-17 PY - 2012 AN - OPUS4-27820 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Quantitative Rauchgasanalyse bei Raumbränden T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27821 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fettig, Ina T1 - Chemische Brandspurenanalytik - Nachweis von Benzin und Diesel in Brandrückständen bei einem Wohnzimmerbrand T2 - ANAKON CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27824 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fettig, Ina T1 - Einfluss der Wassermatrix auf die Analytik von Tributylzinn T2 - CANAS CY - Freiberg, Germany DA - 2013-03-17 PY - 2013 AN - OPUS4-27825 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Deubel, Jan T1 - Berechnung der Wärmefreisetzung bei Raumbränden T2 - Ulm-Freiberger Kalorimetrietage 2013 CY - Freiberg, Germany DA - 2013-02-28 PY - 2013 AN - OPUS4-27828 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilder, Constanze T1 - Experimental qualification and validation of fibre optic strain sensors T2 - 22nd International Conference on Optical Fiber Sensors OFS 2012 CY - Beijing, China DA - 2012-10-15 PY - 2012 AN - OPUS4-27225 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilder, Constanze T1 - Concrete pile testing and monitoring using structure-integrated fibre-optic strain wave sensors T2 - Workshop on Civil Structural Health Monitoring (CSHM-4) "SHM systems supporting extension of the structures' service life" CY - Berlin, Germany DA - 2012-11-06 PY - 2012 AN - OPUS4-27226 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gründer, Klaus-Peter T1 - Verformungsverhalten vorgeschädigter Gefahrgutumschließungen aus Kunststoff T2 - 16. GMA/ITG-Fachtagung Sensoren und Messsysteme 2012 CY - Nuremberg, Germany DA - 2012-05-22 PY - 2012 AN - OPUS4-27260 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Wencke T1 - Overview of protective action of sol-gel alumina coatings on Ni-base alloys and steels in steam-containing atmospheres T2 - Particoat Workshop CY - Costa Teguise, Spain DA - 2012-10-15 PY - 2012 AN - OPUS4-27422 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias T1 - Test procedure for the evaluation of adsorptive buildings materials T2 - Healthy Buildings 2012 - 10th International Conference CY - Brisbane, Australia DA - 2012-07-08 PY - 2012 AN - OPUS4-27449 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilsch, Gerd T1 - Mobile LIBS device for the investigation of building materials T2 - 7th International Conference on Laser Induced Breakdown Spectroskopy (LIBS 2012) CY - Luxor, Egypt DA - 2012-09-29 PY - 2012 AN - OPUS4-27416 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Häßler, Dustin T1 - Numerical and experimental analysis of reactive fire protection systems applied to solid steel rods in tension T2 - Applications of Structural Fire Engineering 2013 CY - Prague, Czech Republic DA - 2013-04-19 PY - 2013 AN - OPUS4-28149 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scheid, Marc T1 - New Ignition Source "Exploding Wire" for the Determination of Explosion Characteristics of Combustible Dust in the 20-L-Sphere T2 - 9th Global Congress on Process Safety CY - San Antonio, TX, USA DA - 2013-04-28 PY - 2013 AN - OPUS4-28523 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Casperson, Ralf T1 - Wirbelstromprüfsystem für Schienenbearbeitungsmaschinen N2 - PLR Prüftechnik Linke & Rühe Magdeburg und die BAM Bundesanstalt für Materialforschung und -prüfung Berlin haben in Zusammenarbeit mit anderen Partnern im Laufe der letzten Jahre verschiedene Wirbelstromsysteme zur Prüfung verlegter Schienen auf rissartige Fehler des Typs Head Checks entwickelt. Die Entwicklung dieser Systeme erfolgte mit dem Ziel, ein Hilfsmittel für die Planung von Schieneninstandhaltungsmaßnahmen zu schaffen. Die Systeme haben sich im praktischen Prüfeinsatz bewährt. Hierzu wurde regelmäßig auf den vorhergehenden Tagungen berichtet. Bei der Schieneninstandhaltung kommen unterschiedliche Typen von Schienenbearbeitungsmaschinen zum Einsatz, z. B. Schienenfräs- und Schleifzüge. Seit einiger Zeit wird von Seiten der Schienennetzbetreiber vermehrt ein Qualitätsnachweis nach erfolgter Schienenbearbeitung gefordert. Hierzu wurde ein Wirbelstromprüfsystem entwickelt, dass speziell an die Erfordernisse der Qualitätsüberwachung in Schienenbearbeitungsmaschinen angepasst ist. Das Prüfsystem wird vorgestellt und über erste Erfahrungen aus dem praktischen Einsatz wird berichtet. T2 - DGZfP-Jahrestagung 2013 CY - Dresden, Germany DA - 06.05.2013 PY - 2013 AN - OPUS4-28480 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pohl, Rainer T1 - Passiver induktiver Sensor zur Zustandsüberwachung rotierender metallischer Bauteile T2 - DGZfP-Jahrestagung CY - Dresden, Germany DA - 2013-05-06 PY - 2013 AN - OPUS4-28481 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jochems, Frank T1 - Verschlusseinrichtung zum dichten Verschließen eines Füll- und Entleerungssystems von Eisenbahnkesselwagen oder Transporttanks für Gefahrgut T2 - Transport Logistik Messe München (in Kooperation mit Aussenstand VTG Aktiengesellschaft) CY - Munich, Germany DA - 2013-06-04 PY - 2013 AN - OPUS4-28490 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Simon, Anne T1 - The role of reactive oxygen species at the end of the life cycle assessment of Baytubes: an outlook T2 - 23rd Annual Meeting of the Society of Environmental Toxicology and Chemistry (SETAC Europe) CY - Glasgow, Scotland DA - 2013-05-12 PY - 2013 AN - OPUS4-28473 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Comparison of the Operating Life of Tank Containers, Tank Containers, Tank Behicles and Rail Tank Cars for the Carriage of Dangerous Goods in Practice, Analyses of Causes of Damage T2 - Loss Preention CY - Florence, Italy DA - 2013-05-12 PY - 2013 AN - OPUS4-28608 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baier, Jennifa T1 - Plasma-kompatible Partikel zur gepulsten in-situ Injektion von ex-situ hergestellten Partikeln für ad-on Funktionen und zur Identifizierung in Beschichtungen T2 - Material's Days CY - Rostock, Germany DA - 2013-05-23 PY - 2013 AN - OPUS4-28612 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kanzler, Daniel T1 - POD auf Basis von realen Fehlern durch die Bayessche Statistik T2 - DGZfP-Jahrestagung CY - Dresden, Germany DA - 2013-05-06 PY - 2013 AN - OPUS4-28632 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kanzler, Daniel T1 - Observer-POD für die Bewertung der Radiographie T2 - DGZfP-Jahrestagung CY - Dresden, Germany DA - 2013-05-06 PY - 2013 AN - OPUS4-28633 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina T1 - 5. Europäisch-Amerikanischer Workshop über Zuverlässigkeit der ZfP T2 - DGZfP-Jahrestagung CY - Dresden, Germany DA - 2013-05-06 PY - 2013 AN - OPUS4-28634 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina T1 - Holistische Betrachtung der Zuverlässigkeit von industriellen ZfP-Systemen; Können wir wirklich die Zuverlässigkeit vor Ort voraussagen? - von der Labor-POD zu den aktuellen Bedingungen vor Ort T2 - DGZfP-Jahrestagung CY - Dresden, Germany DA - 2013-05-06 PY - 2013 AN - OPUS4-28635 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertin, Annabelle T1 - Effect of multivalent biocompatible (macro)molecules on the one-pot synthesis of nanoparticles for biomedical applications T2 - NanoGEM-Abschlusskonferenz CY - Berlin, Germany DA - 2013-06-12 PY - 2013 AN - OPUS4-28699 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaal, Mate T1 - Visco- and linear elastic behaviour of polyproylene-based ferroelectret films T2 - Frontiers in Polymere Sciene 2013 CY - Sitges, Spain DA - 2013-05-21 PY - 2013 AN - OPUS4-28686 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Skender, Marina T1 - Untersuchung der Einflüsse der Ultraschallfrequenz, der Tiefe und der Größe von Defekten auf die POD T2 - DGZfP-Jahrestagung CY - Dresden, Germany DA - 2013-05-06 PY - 2013 AN - OPUS4-28643 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lo, I. T1 - The 2012 Ethyl Glucuronide (EtG) and Fatty Acid Ethyl Esters (FAEE) Proficiency Testing on behalf of the Society of Hair Testing (SoHT) T2 - 18th Meeting of the Society of Hair Testing CY - Geneva, Switzerland DA - 2013-08-28 PY - 2013 AN - OPUS4-28721 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Quantification of ethyl glucuronide in hair: The effect of milling and sonication on the extraction efficiency T2 - 18th Meeting of the Society of Hair Testing CY - Geneva, Switzerland DA - 2013-08-28 PY - 2013 AN - OPUS4-28722 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Kinetic Model for Cross-linking Reaction of Epoxy Resin for Rotor Blade Production T2 - Thermosets Conference 2013 - From Monomers to Components CY - Berlin, Germany DA - 2013-09-18 PY - 2013 AN - OPUS4-28701 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erhard, Anton T1 - Ultrasonic Inspection of Type B Packages T2 - 17th International Symposium on Packaging and Transportation of Radioactive Materials (PATRAM) 2013 CY - San Francisco, CA, USA DA - 2013-08-18 PY - 2013 AN - OPUS4-28704 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Martin T1 - Erweiterung der GSBL-Datenbank um sicherheitstechnische Kenngrößen brennbarer Stäube T2 - 13. BAM-PTB Kolloquium CY - Braunschweig, Germany DA - 2013-06-18 PY - 2013 AN - OPUS4-28713 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - Test Field for the Validation of a Multifunctional Sensor for Distributed Subsurface Monitoring of Gas Storage Areas T2 - SENSOR 2013 - 16. Internationaler Kongress für Sensoren und Messtechnik CY - Nuremberg, Germany DA - 2013-05-14 PY - 2013 AN - OPUS4-28674 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noske, Reinhard T1 - Messplatz zur Bereitstellung von Prüfatmosphären für Multigassensoren T2 - Fachmesse für Sensorik, Mess- und Prüftechnik CY - Nuremberg, Germany DA - 2013-05-14 PY - 2013 AN - OPUS4-28202 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Raedel, Martina T1 - Historic Gold Mosaics: Composition and Deterioration T2 - IIC Congress, The Decorative: Conservation and the Applied Arts CY - Vienna, Austria DA - 2012-09-10 PY - 2012 AN - OPUS4-28196 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gemeinert, Marion T1 - Development of the Certified Reference Material BAM-D001 for Particle Size Measurement by Laser Diffraction Method T2 - PARTEC 2013 CY - Nuremberg, Germany DA - 2013-04-23 PY - 2013 AN - OPUS4-28374 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kunte, Hans-Jörg T1 - How to shift and exploit the unfavourable equilibrium of ADPC formation T2 - VAAM Jahrestagung CY - Bremen, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-28375 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele T1 - Methodenvergleich zur Partikelgrößenanalyse am Beispiel von Nanodispersen ZrO2-Pulvern T2 - DKG Jahrestagung 2013 CY - Weimar, Germany DA - 2013-03-18 PY - 2013 AN - OPUS4-28458 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liehr, Sascha T1 - Quasi-distributed measurement on femtosecond laser-induced scattering voids using incoherent OFDR and OTDR T2 - 5th European Workshop on Optical Fiber Sensors CY - Kraków, Poland DA - 2013-05-19 PY - 2013 AN - OPUS4-28742 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Trace analysis of organic contaminant in groundwater: Specific requirements for analyte stabilization during success monitoring of remediation efforts T2 - ICEI 2013 CY - Trier, Germany DA - 2013-09-16 PY - 2013 AN - OPUS4-28745 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Stabilization of groundwater samples for determination of volatile organics T2 - ICEI 2013 CY - Trier, Germany DA - 2013-09-16 PY - 2013 AN - OPUS4-28746 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hertwig, Andreas T1 - Enhanced SPR-ellipsometric gas sensors with doped dielectric layers T2 - ICSE 6 Konferenz CY - Kyoto, Japan DA - 2013-05-26 PY - 2013 AN - OPUS4-28802 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosu, Dana Maria T1 - Optical Characterization of Highly Inhomogeneous Thin Films T2 - E-MRS 2013 Spring Meeting CY - Strasbourg, France DA - 2013-05-27 PY - 2013 AN - OPUS4-28805 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Generation, control and mechanisms of the formation of femtosecond laser-induced periodic surface structures T2 - European Materials Research Society (EMRS) Spring Meeting 2013, Symposium V "Laser materials interactions for micro and nano applications" CY - Strasbourg, France DA - 2013-05-27 PY - 2013 AN - OPUS4-28806 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Structural modification of femtosecond laser pulse irradiated potassium-magnesium silicate glasses probed by near edge X-ray absorption spectroscopy T2 - European Materials Research Society (EMRS) Spring Meeting 2013, Symposium V "Laser materials interactions for micro and nano applications" CY - Strasbourg, France DA - 2013-05-27 PY - 2013 AN - OPUS4-28809 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Jörg T1 - Beam diameter dependence of surface damage threshold of optical multimode fibers and preform material for 532 nm and 1064 nanosecond laser treatment T2 - European Materials Research Society (EMRS) Spring Meeting 2013, Symposium V "Laser materials interactions for micro and nano applications" CY - Strasbourg, France DA - 2013-05-27 PY - 2013 AN - OPUS4-28810 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schälike, Stefan T1 - Validated CFD Simulation of Flame Temperatures of a Multiple N-heptane Pool Fire T2 - 6th European Combustion Meeting (ECM2013) CY - Lund, Sweden DA - 2013-06-25 PY - 2013 AN - OPUS4-28755 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Christina T1 - Vibrational Density of States and Molecular Dynamics of Discotic Liquid Crystals in the Bulk and in the Nanoconfined State Investigated by Neutron Scattering T2 - DPG Spring Meeting CY - Regensburg, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-28759 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehnik-Habrink, Petra T1 - Multi-residue method for PAH, PCB and OCP - Validation for trace analysis in forest soil T2 - SETAC Europe 23rd Annual Meeting CY - Glasgow, Scotland DA - 2013-05-12 PY - 2013 AN - OPUS4-28771 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Janine T1 - Determination of Tributyltin in whole water samples T2 - ICCE 2013 CY - Barcelona, Spain DA - 2013-06-26 PY - 2013 AN - OPUS4-28772 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Identification and Characterization of New Disinfections By-products of Polycyclic Musks (AHTN and HHCB) in Swimming pool water T2 - ICCE 2013 CY - Barcelona, Spain DA - 2013-06-24 PY - 2013 AN - OPUS4-28773 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Arroyo-Abad, Uriel T1 - Arsenolipid pattern in fresh cod liver: application of RP-HPLC with simultaneous ICP-MS and ESI-Q-TOF-MS detection T2 - Metallomics 2013 CY - Oviedo, Spain DA - 2013-07-08 PY - 2013 AN - OPUS4-28774 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Isotopic labeled standard for the routine analysis of arsenobetaine T2 - Metallomic 2013 CY - Oviedo, Spain DA - 2013-07-08 PY - 2013 AN - OPUS4-28775 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Antje T1 - Multi-Component Halogen-free Flame Retardants in Styrene-Ethylene-Butylene-Styrene (SEBS)-Copolymers T2 - FRPM13, 14th European Meeting on Fire Retardancy and Protection of Materials Conference CY - Lille, France DA - 2013-06-30 PY - 2013 AN - OPUS4-28778 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübert, Thomas T1 - Flame retardant SiO2 and TiO2 wood composites T2 - 16th International Sol-Gel Conference CY - Hangzhou, China DA - 2011-08-28 PY - 2011 AN - OPUS4-28814 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wosniok, Aleksander T1 - L-BOFDA: a new sensor technique for distributed Brillouin sensing T2 - 5th European Workshop on Optical Fibre Sensors CY - Kraków, Poland DA - 2013-05-19 PY - 2013 AN - OPUS4-28788 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Robertson, Daniela T1 - Test method for testing oxidative resistance of polythylene based products T2 - Polymers for Advanced Technologies CY - Berlin, Germany DA - 2013-09-29 PY - 2013 AN - OPUS4-29303 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maiwald, Michael T1 - Determination of methanol in FAME by Near Infrared Spectroscopy (NIRS) and qNMR T2 - Gas 2013 Konferenz CY - Rotterdam, Netherlands DA - 2013-06-05 PY - 2013 AN - OPUS4-29306 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Muschik, Bernd T1 - Spektraloptische Verfahren zur Charakterisierung fluoreszierender Materialien T2 - 39. Jahrestagung der deutschen farbwissenschaftlichen Gesellschaft (DfwG) CY - Ilmenau, Germany DA - 2013-10-08 PY - 2013 AN - OPUS4-29288 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Martin T1 - 3D-SAFT Imaging von Streuern in Brettschichtholz T2 - DGZfP Jahrestagung CY - Dresden, Germany DA - 2013-05-06 PY - 2013 AN - OPUS4-29292 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hong, Shuxian T1 - Non-destructive Corrosion Monitoring in Concrete with Ground Penetration Radar T2 - SmartEN-ITN: Property Rigths and Entrepreneur Workshop CY - Berlin, Germany DA - 2013-04-10 PY - 2013 AN - OPUS4-29469 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilsch, Gerd T1 - LIBS for the quantitative determination of sodium and chlorine distribution in concrete T2 - 1st International Conference on the Chemistry of Construction Materials CY - Berlin, Germany DA - 2013-10-07 PY - 2013 AN - OPUS4-29525 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilsch, Gerd T1 - Mobile scanning LIBS device for the investigation of building materials T2 - 7th Euro-Mediterranean Symposium on Laser-Induced Breakdown Spectroscopy CY - Bari, Italy DA - 2013-09-16 PY - 2013 AN - OPUS4-29527 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Andreon, Barbara Priscila T1 - Electrochemical and Morphological Corrosion Studies in Stainless Steel by the Use of Gel-type Electrolytes T2 - Jahrestagung der Gesellschaft für Korrosionsschutz e. V. CY - Frankfurt am Main, Germany DA - 2013-11-12 PY - 2013 AN - OPUS4-29540 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hong, Shuxian T1 - Non-destructive Corrosion Monitoring in Concrete with Ground Penetration Radar T2 - Smart Management of the Human Infrastructure, SmartEN Final Conference CY - Limassol, Cyprus DA - 2013-10-09 PY - 2013 AN - OPUS4-29475 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bierkandt, Frank T1 - Quantitative Analyse der Silbernanopartikelaufnahme durch Zellen mittels LA-ICP-MS T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 2013-11-12 PY - 2013 AN - OPUS4-29551 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - Adhesion Promotion in Aluminium Polypropylene Composites Measured by Peel test and Centrifuge technology T2 - 19th International Vacuum Congress (IVC-19) CY - Paris, France DA - 2013-09-09 PY - 2013 AN - OPUS4-29552 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tschirschwitz, Rico T1 - Zündkriterium für die Bestimmung von Explosionsgrenzen bei erhöhten Ausgangsdrücken T2 - 11. Fachtagung Anlagen-, Arbeits- und Umweltsicherheit CY - Köthen, Germany DA - 2013-11-07 PY - 2013 AN - OPUS4-29485 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krietsch, Arne T1 - Wie brand- und explosionsgefährlich sind Nanostäube? T2 - 11. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 2013-11-07 PY - 2013 AN - OPUS4-29495 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Martin T1 - Bandbreiten sicherheitstechnischer Kenngrößen brennbarer Stäube im gemeinsamen Stoffdatenpool Bund/Länder (GSBL) T2 - 11. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 2013-11-07 PY - 2013 AN - OPUS4-29497 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schälike, Stefan T1 - Kritische thermische Abstände wechselwirkender KW- und Peroxid-Poolfeuer T2 - 11. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 2013-11-07 PY - 2013 N1 - Geburtsname von Vela-Wallenschus, Iris: Vela, I. - Birth name of Vela-Wallenschus, Iris: Vela, I. AN - OPUS4-29499 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klippel, Alexander T1 - Einfluss des Staubungsverhaltens auf druckentlastete Staubexplosionen T2 - 11. Fachtagung "Anlagen-, Arbeits- und Umweltsicherheit" CY - Köthen, Germany DA - 2013-11-07 PY - 2013 AN - OPUS4-29500 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank T1 - Integrity of aluminium gas receptacle T2 - IMECE 2013 CY - San Diego, CA, USA DA - 2013-11-15 PY - 2013 AN - OPUS4-29668 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reich, Franziska T1 - Fail Safe? - A study about the integrety of safety valves for tanks for dangerous goods T2 - ASME 2013 International Mechanical Engeneering Congress & Exposition CY - San Diego, CA, USA DA - 2013-11-15 PY - 2013 AN - OPUS4-29672 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Staude, Andreas T1 - Non-Sexual Abdominal Appendages in Adult Insects Challenge a 300 Million Year Old Bauplan T2 - HZB Users Meeting 2013 CY - Berlin, Germany DA - 2013-12-04 PY - 2013 AN - OPUS4-29676 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Staude, Andreas T1 - Properties of the inner structure of ammonium nitrate prills T2 - HZB Users Meeting 2013 CY - Berlin, Germany DA - 2013-12-04 PY - 2013 AN - OPUS4-29677 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bremser, Wolfram T1 - COMAR the international database for certified reference materials T2 - 1. International Scientific Conference "Reference materials in measurement and technology" CY - Yekaterinburg, Russia DA - 2013-09-10 PY - 2013 AN - OPUS4-29270 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riesemeier, Heinrich T1 - Drastic evolutionary changes in a cave insect's head morphology - First insights from high-resolution synchroton uCT T2 - EUROMAT 2013 CY - Seville, Spain DA - 2013-09-09 PY - 2013 AN - OPUS4-29258 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riesemeier, Heinrich T1 - Coherent synchroton-based micro-imaging employed for quantitative studies of micro-gap formation in dental implants T2 - EUROMAT 2013 CY - Seville, Spain DA - 2013-09-09 PY - 2013 AN - OPUS4-29259 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gärtner, Stefanie T1 - Hapten design for the production of antibodies small molecules T2 - Trends in Diagnostics CY - Tübingen, Germany DA - 2013-10-07 PY - 2013 AN - OPUS4-29237 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oberleitner, Lidia T1 - Comparison of Heterogeneous and homogeneous Immunoassays T2 - Trends in Diagnostics CY - Tübingen, Germany DA - 2013-10-07 PY - 2013 AN - OPUS4-29238 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhne, Robert T1 - A multiplex hapten microarray for the parallel analysis of micropollutants in water samples T2 - 6th Late Summer Workshop: "Mcropollutants in the water cycle" CY - Uhldingen-Mühlhofen, Germany DA - 2013-09-30 PY - 2013 AN - OPUS4-29239 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhne, Robert T1 - A hapten microarray for multianalyte applications T2 - Trends in Diagnostics CY - Tübingen, Germany DA - 2013-10-07 PY - 2013 AN - OPUS4-29240 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Füllbrandt, Marieke T1 - Poly(N-isopropylacrylamide) chains adsorbed on silica nanoparticles: A dielectric study of the phase transition of interfacial pNIPAM T2 - DPG Frühjahrstagung 2013 CY - Regensburg, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-29193 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kreutzbruck, Marc T1 - Air-Coupled Ferroelectret Ultrasonic Transducers Applied to Testing of Fiber-Reinforced Polymers T2 - The 12th International Conference of the Slovenian Society for Non-Destructive Testing >>Application of Contemporary Non-Destructive Testing in Engineering<< ICNDT CY - Portorož, Slovenia DA - 2013-09-04 PY - 2013 AN - OPUS4-29196 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert T1 - Implementing NDE Technology and Effective Integration to an US Highway Agency Bridge Management Program T2 - 5th European-American Workshop on Reliability of NDE, Berlin, 07.-10.10.2013 CY - Berlin, Germany DA - 2013-10-07 PY - 2013 AN - OPUS4-29197 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Oxidative damage of an Intermediate Bulk Container (IBC) made of polyethylene by 53 % nitric acid T2 - European Corrosion Congress 2013 CY - Estoril, Portugal DA - 2013-09-01 PY - 2013 AN - OPUS4-29132 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Quantitative determination of methanol in FAME by Near-Infrared (NIRS) and qNMR spektroskopy T2 - 7th International Gas Analysis Symposium CY - Rotterdam, Netherlands DA - 2013-06-05 PY - 2013 AN - OPUS4-29205 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schürmann, Robin Mathis T1 - Correlated SERS and AFM imaging to investigate DNA strand breaks at a single-molecule level T2 - Confocal Raman Imaging WITec CY - Ulm, Germany DA - 2013-09-30 PY - 2013 AN - OPUS4-29208 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nöller, Renate T1 - Differenzierung von mineralischen Arsensulfiden zur Herkunftsbestimmung T2 - Jahrestagung Archäometrie und Denkmalpflege CY - Weimar, Germany DA - 2013-09-25 PY - 2013 AN - OPUS4-29213 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prager, Jens T1 - Numerical Simulation of ultrasonic guided waves using the Schaled Boundary Finite Element Method (SBFEM) T2 - NDT in progress CY - Dresden, Germany DA - 2013-11-07 PY - 2013 AN - OPUS4-29434 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prager, Jens T1 - Numerical Simulation of ultrasonic guided waves using the Schaled Boundary Finite Element Method (SBFEM) T2 - 6. Dresden Airport Seminar CY - Dresden, Germany DA - 2013-11-05 PY - 2013 AN - OPUS4-29435 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - NMR Spectroscopy of fluids and gases from moderate to high pressure T2 - 9. AK PAT CY - Ludwigshafen am Rhein, Germany DA - 2013-11-28 PY - 2013 AN - OPUS4-29613 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmigalla, Sven T1 - Untersuchung des Korrosionsverhalten von Elektronenstahlschweißungen am Duplexstahl 1.4462 T2 - Jahrestagung der Gesellschaft für Korrosionsschutz e.V. 2013 CY - Frankfurt am Main, Germany DA - 2013-11-12 PY - 2013 AN - OPUS4-29588 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Babutzka, Martin T1 - Eine neue Methode zur Untersuchung der Chromverarmung an Karbiden in martensitischen nichtrostenden Stählen T2 - Jahrestagung der Gesellschaft für Korrosionsschutz e.V. 2013 CY - Frankfurt am Main, Germany DA - 2013-11-12 PY - 2013 AN - OPUS4-29589 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Multi-spectroscopic approach for the analysis of dissolution profiles of pharmaceuticals T2 - 9. Kolloquium Prozessanalytik CY - Ludwigshafen am Rhein, Germany DA - 2013-11-28 PY - 2013 N1 - Geburtsname von Batzdorf, Lisa: Tröbs, L. - Birth name of Batzdorf, Lisa: Tröbs, L. AN - OPUS4-29597 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Chemical and morphological changes in hydrochars derived from micro-crsytalline cellulose T2 - 9. Kolloquium Prozessanalytik CY - Berlin, Germany DA - 2013-11-28 PY - 2013 AN - OPUS4-29598 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Auersch, Lutz T1 - Mitigation measures for ballasted tracks - optimisation of sleepers, sleeper pads and the substructure T2 - International Workshop on Railway Noise and Vibration CY - Uddevalla, Sweden DA - 2013-09-09 PY - 2013 AN - OPUS4-29620 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Femtosecond Laser-induced periodic surface structures on steel for tribological applications T2 - 12th Conference on Laser Ablation, COLA 2013 CY - Ischia, Italy DA - 2013-10-06 PY - 2013 AN - OPUS4-29555 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhm, S. T1 - Femtosecond time-resolved diffraction dynamics of laser-induced periodic surface structures on dielectrics T2 - 12th Conference on Laser Ablation, COLA 2013 CY - Ischia, Italy DA - 2013-10-06 PY - 2013 AN - OPUS4-29556 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Controlled Layer-by-Layer Assembly of Tetraactram Macrocycles based on Coordination Chemistry T2 - 15th European Conference on Applications of Surface and Interface Analysis CY - Cagliari, Italy DA - 2013-10-13 PY - 2013 AN - OPUS4-29557 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oertel, Angelika T1 - Klärschlammaschen - Referenzmaterialien für die Optimierung eines Recyclingprozesses T2 - PRORA Fachtagung prozessnahe Röntgenanalytik CY - Berlin, Germany DA - 2013-11-21 PY - 2013 AN - OPUS4-29567 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Walter, Korvin T1 - Process Monitoring of a Hydroformylation Miniplant via Raman Spectroscopy T2 - AK Prozessanalytik Kolloquium CY - Karlsruhe, Germany DA - 2013-11-28 PY - 2013 AN - OPUS4-29571 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Molnarne, Maria T1 - Chemsafe - Datenbank für bewertete sicherheitstechnische Kenngrößen T2 - ExploRisk 2002 (Messestand der BAM/PTB) CY - Nuremberg, Germany DA - 2002-10-08 PY - 2002 AN - OPUS4-1475 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Senoner, Mathias T1 - Ringversuche in der Nanoanalytik T2 - NanoDE - Innovation durch Nanotechnologie CY - Bonn, Germany DA - 2002-05-06 PY - 2002 AN - OPUS4-1735 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabe, Torsten T1 - Density Gradient Evaluation in Alumina Powder Compacts During Sintering T2 - 14th Rio Grande Symposium on Advanced Materials CY - Albuquerque, NM, USA DA - 2002-11-21 PY - 2002 AN - OPUS4-1993 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mezera, Marek T1 - Bacterial adhesion on femtosecond laser-induced periodic surface structures N2 - Biofilm formation in industrial or medical settings is usually unwanted and leads to serious health problems and high costs. Inhibition of initial bacterial adhesion prevents biofilm formation and is, therefore, a major mechanism of antimicrobial action of surfaces. Surface topography largely influences the interaction between bacteria and surfaces which makes topography an ideal base for antifouling strategies and eco-friendly alternatives to chemical surface modifications. Femtosecond laser-processing was used to fabricate sub-micrometric surface structures on silicon and stainless steel for the development of antifouling topographies on technical materials. T2 - Future Tech Week 2020 CY - Online meeting DA - 21.09.2020 KW - Laser-induced periodic surface structures (LIPSS) KW - Bacterial adhesion KW - Biofilm growth KW - Structural color KW - Femtosecond laser processing PY - 2020 UR - http://futuretechweek.fetfx.eu/wp-content/uploads/gravity_forms/2-5432af7ecff9e0243d7383ab3f931ed3/2020/09/BioCombs4Nanofibers_Poster-for-Future_Tech_Week_2020_08-09-2020_with_Reprint-permission_for_upload.pdf AN - OPUS4-51233 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wojciak, K. A1 - Tokarski, T. A1 - Cios, G. A1 - Nolze, Gert T1 - Precision and accuracy during standard-less mapping of local lattice distortions using ebsd and calm technique N2 - Electron Back Scatter Diffraction (EBSD) is a very versatile analytical technique allowing for the characterization of material structure. Historically, diffraction images (Kikuchi patterns) registered during EBSD analysis were solved using Hough/Radon transformation. The last decade brought several novel techniques of experimental pattern analysis, focusing entirely on image analysis routines such as pattern matching, or various variants of High-Resolution EBSD. However, all the above-mentioned techniques require prior knowledge of the material structure to perform orientation analysis. The recently presented algorithm employed in Crystallographic Analysis of Lattice Metric (CALM) software, effectively removes this limitation enabling a standard-less analytical approach in EBSD systems. At its core, the CALM technique couples accurate detection of the Kikuchi bands position, with a rigid construction of reciprocal lattice resulting from translational crystal symmetry. A unique characteristic of the methodology also gives an opportunity for application in the analysis of continuous lattice changes, for example tetragonality mapping. During mapping, however, the geometry of the gnomonic projection (represented by the projection center) is continuously altered decreasing overall algorithm efficiency. The work presents an analysis of the projection center in terms of precision and accuracy. T2 - Oxford User Meeting 2024 CY - Krakow, Poland DA - 14.05.2024 KW - EBSD KW - Kikuchi KW - Lattice parameters KW - Ratio refinement PY - 2024 AN - OPUS4-60087 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tokarski, T. A1 - Nolze, Gert T1 - Exploring Unconventional Uses of Kikuchi Pattern Analysis N2 - The characterization of really unknown phases typically uses 70 to 150 reflectors for lattice metric calculation. The determination of the lattice parameters follows with 4% accuracy. Including a Z correction up to 1% can be reached. The precision of the lattice parameters ratios (a:b:c) is, however, better than 0.1%. T2 - Oxford Users Meeting 2024 CY - Krakow, Poland DA - 14.05.2024 KW - EBSD KW - Kikuchi KW - Lattice parameters KW - Ratio refinement PY - 2024 AN - OPUS4-60086 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Anja T1 - Bacterial adhesion on ultrashort laser processed surfaces N2 - Bacterial biofilms are multicellular communities adhering to surfaces and embedded in a self-produced extracellular matrix. Due to physiological adaptations and the protective biofilm matrix itself, biofilm cells show enhanced resistance towards antimicrobial treatment. In medical and industrial settings, biofilms on e.g. for implants or for surfaces in food-processing industry can be a fertile source of bacterial pathogens and are repeatedly associated with persisting, nosocomial and foodborne infections. As extensive usage of antibiotics and biocides can lead to the emergence of resistances, various strategies are currently developed, tested and improved to realize anti-bacterial surface properties through surface functionalization steps avoiding antibiotics. In this study, contact-less and aseptic large-area ultrashort laser scan processing is employed to generate different surface structures in the nanometer- to micrometer-scale on technical materials, i.e. titanium-alloy, steel, and polymer. The processed surfaces were characterized by optical and scanning electron microscopy and subjected to bacterial colonization studies with Escherichia coli test strains. For each material, biofilm results of the fs-laser treated surfaces are compared to that obtained on polished (non-irradiated) surfaces as a reference. Depending on the investigated surfaces, different bacterial adhesion patterns were found, suggesting an influence of geometrical size, shape and cell appendages of the bacteria and – above all – the laser-processed nanostructure of the surface itself. T2 - European Materials Research Society Spring Meeting 2021 CY - Online Meeting DA - 31.05.2021 KW - Bacterial adhesion KW - Biofilm formation KW - Ultrashort laser processing KW - Laser-induced periodic surface structures (LIPSS) PY - 2021 UR - https://www.european-mrs.com/laser-material-processing-fundamental-interactions-innovative-applications-emrs AN - OPUS4-52765 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thuy, Maximilian T1 - Influence of molecular orientation on the environmental stress cracking resistance N2 - Molecular orientation has a significant effect on the material properties of polymers. Preferential orientation of the microstructure (polymer chains or crystallites) in a specific direction or plane often enhances the material properties, especially if the high-strength covalent bonds are primarily exposed to loads instead of the weaker van der Waals bonds. However, the orientation-dependent microstructure and its mechanical behavior is in general already well understood by many scientific studies [1-3]. Isotropic materials are frequently required for an intrinsic material characterization without prevailing processing-induced properties, as is the case for Full Notch Creep Test (FNCT) [4] addressing environmental stress cracking (ESC) in high-density polyethylene (PE-HD) [5, 6]. Since ESC is one of the major limiting issues for long-term performance of PE-HD pipes and containers [7], which in contrast have a production-related preferential orientated microstructure due to extrusion or extrusion blow molding, it is important to additionally investigate the ESC resistance of such anisotropic microstructure. Investigations of the slow crack growth (SCG) with respect to the molecular orientation generally obtain a factor of 1.2 up to 4.7 between crack growth perpendicular to the extrusion direction and crack growth parallel to the extrusion direction 8. Based on FNCT investigations with an aqueous detergent solution as environmental medium, hot pressed sheets with isotropic morphology are compared with extruded sheets from which specimens with different orientation angles are taken. However, the time to failure obtained by FNCT is also significantly influenced by the different cooling conditions under which the final morphology is formed. The tendency of the specimen to fail due to ESC is investigated as a function of environmental medium temperature. For a more detailed analysis of the affecting parameters in the manufacturing process, the ESC resistance is discussed considering the differences in crystallinity as revealed by thermal analysis. T2 - 36th International Conference of the Polymer Processing Society CY - Montreal, Canada DA - 26.09.2021 KW - Environmental stress cracking KW - Orientation-dependent microstructure KW - High-density polyethylene KW - Full Notch Creep Test PY - 2021 AN - OPUS4-53399 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Wencke T1 - Effect of corrosive atmosphere on the oxidation behavior of CrMnFeCoNi and CrCoNi alloys N2 - High- and medium-entropy alloys (HEAs and MEAs) constitute a new class of materials. Those with a face-centered cubic (fcc) structure from the Cr-Mn-Fe-Co-Ni system have excellent mechanical properties and are considered for high-temperature applications since diffusion in these alloys was reported to be sluggish. However, their corrosion resistance at high temperatures must still be evaluated to further qualify them for such kinds of applications. Various groups studied the oxidation behavior of HEAs and MEAs under (dry) laboratory and artificial air as well as CO2/CO mixtures in different temperature ranges. Adomako et al. carried out oxidation tests in dry air between 800 °C and 1000 °C for 24 h in equiatomic CrCoNi, CrMnCoNi, and CrMnFeCoNi alloys. The authors showed that CrCoNi exhibits the best corrosion resistance at 800 °C due to the formation of a protective Cr2O3 layer. The matrix below the oxide scale was reported to be correspondingly depleted in Cr. It was further shown that the addition of Mn and Fe to CrCoNi changes the phase composition of the oxide scale at 800 °C. A Mn2O3 layer was grown during oxidation on CrMnCoNi and CrMnFeCoNi and a Cr2O3 scale was formed at the matrix/oxide scale interface. Beneath these oxide layers, Mn- and Cr-depleted zones were detected. These phase morphologies demonstrate the inward diffusion of oxygen and outward diffusion of Cr and Mn resulting in the formation of Cr2O3 and Mn2O3. In the present study, the corrosion resistance of CrMnFeCoNi and CrCoNi were confirmed and additionally characterized under further oxidizing atmospheres at 800 °C including Ar-2 Vol.% O2, Ar-2 Vol.% H20, and Ar-2 Vol.% SO2 mixtures. T2 - 10th International Symposium on High-Temperature Corrosion and Protection of Materials CY - Online meeting DA - 28.03.2021 KW - High-entropy alloys KW - High-temperature corrosion KW - Chromium oxide KW - Manganese oxide PY - 2021 AN - OPUS4-53143 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bettge, Dirk T1 - Merkmale von alltäglichen Brüchen und wie wir daraus lernen können N2 - Schadensfälle aus dem Alltag erscheinen oft simpel, sind im Detail aber meist komplexer als erwartet und eröffnen die Möglichkeit, Merkmale zu studieren, Aufnahmetechniken und Bildbearbeitung zu optimieren und die Erfahrungen am Ende ohne Restriktionen weiter zu vermitteln. Beispielsweise verändern sich die mikroskopischen Merkmale von Schwingrissen über ihren Verlauf oft deutlich. Dies hängt von der Art des Werkstoffs und von den Beanspruchungsbedingungen ab. Die Bruchmerkmale werden schließlich systematisch dargestellt und ein Datensatz für die Fraktographische online-Datenbank der DVM/DGM AG Fraktographie erstellt, die fachöffentlich einsehbar ist. T2 - Metallographietagung 2024 CY - Berlin, Germany DA - 18.09.2024 KW - Fraktographie KW - Schadensanalyse PY - 2024 AN - OPUS4-61239 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Marc Benjamin T1 - Temperature in micromagnetism: Cell size and scaling effects of the stochastic Landau-Lifshitz equation N2 - The movement of the macroscopic magnetic moment in ferromagnetic systems can be described by the Landau-Lifshitz (LL) or Landau-Lifshitz-Gilbert (LLG) equation. These equations are strictly valid only at absolute zero temperature. To include temperature effects a stochastic version of the LL or LLG equation for a spin density of one per unit cell can be used instead. To apply the stochastic LL to micromagnetic simulations, where the spin density per unit cell is generally higher, a conversion regarding simulation cell size and temperature has to be established. Based on energetic considerations, a conversion for ferromagnetic bulk and thin film systems is proposed. The conversion is tested in micromagnetic simulations which are performed with the Object Oriented Micromagnetic Framework (OOMMF). The Curie temperatures of bulk Nickel, Cobalt and Iron systems as well as Nickel thin-film systems with thicknesses between 6.3 mono layer (ML) and 31ML are determined from micromagnetic simulations. The results show a good agreement with experimentally determined Curie temperatures of bulk and thin film systems when temperature scaling is performed according to the presented model. T2 - #RSCposter 2023 CY - Online meeting DA - 28.02.2023 KW - Exchange interaction KW - Ferromagnetism KW - LLG KW - Landau Lifshitz equation KW - Magnetic moment KW - Magnetic nanoparticles KW - Micromagnetism KW - OOMMF KW - Object oriented micromagnetic framework KW - Stochastic Landau Lifshitz Gilbert equation KW - Temperature scaling PY - 2023 AN - OPUS4-57062 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tang, Chi-Long T1 - Sub-4 nm particles from FFF-3D printing measured with the TSI 1 nm CPC and the Airmodus A11 nCNC N2 - Concerns have been raised as Fused Filament Fabrication (FFF) desktop 3D printer emits harmful ultrafine particles (dP < 100 nm) during operation in indoor spaces. However, the vast majority of previous emission studies have neglected the possible occurrence of sub-4 nm particles by using conventional condensation particle counter (CPC) for detection. Thus, the total particle emission could be systematically underestimated. This study has compared two diethylene glycol (DEG) based instruments to evaluate their suitability for measuring organic FFF particles in the sub-4 nm size range either as particle counter or as a particle size spectrometer. T2 - European Aerosol Conference 2024 CY - Tampere, Finland DA - 25.08.2024 KW - Air pollution KW - Emission testing KW - FFF-3D printing KW - Sub-4nm particles KW - Ultrafine particles PY - 2024 AN - OPUS4-60930 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bayerlein, Bernd T1 - Semantic integration of diverse data in materials science: Assessing Orowan strengthening N2 - This study applies Semantic Web technologies to advance Materials Science and Engineering (MSE) through the integration of diverse datasets. Focusing on a 2000 series age-hardenable aluminum alloy, we correlate mechanical and microstructural properties derived from tensile tests and darkfield transmission electron microscopy across varied aging times. An expandable knowledge graph, constructed using the Tensile Test and Precipitate Geometry Ontologies aligned with the PMD Core Ontology [1], facilitates this integration. This approach adheres to FAIR principles and enables sophisticated analysis via SPARQL queries, revealing correlations consistent with the Orowan mechanism (see Fig.1). The study highlights the potential of semantic data integration in MSE, offering a new approach for data-centric research and enhanced analytical capabilities [2]. T2 - MSE Congress 2024 - Materials Science and Engineering CY - Darmstadt, Germany DA - 24.09.2024 KW - Semantic Representation KW - Age-Hardenable Aluminium Alloy KW - Digtial Representation KW - Knowledge graph and ontologies KW - PMD Core Ontology PY - 2024 AN - OPUS4-61139 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scheffler, F. A1 - Tielemann, Christopher T1 - Crystallization of glasses studied with PEEM N2 - A heat treated glass that formed crystals under controlled conditions can be a glass ceramic. A proper understanding of crystallization in glassy melts is needed yet still lacking. Involved processes include the mobility of Elements within the glass during heat treatment and the reorganization of atomic bonds during crystallization. This change in coordination number of certain elements is easily observable in bulk glass samples during heat treatment with XAS. Our plan was to monitor these reorganization processes in situ at the immediate surface during heat treatment with PEEM to get time and spatial resolved data. T2 - Joint Meeting of the Polish Synchrotron Radiation Society and SOLARIS Users CY - Online meeting DA - 09.09.2020 KW - Glass KW - Surface KW - Peem KW - Synchrotron PY - 2020 AN - OPUS4-51336 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hübler, Daniela A1 - Höhne, Patrick A1 - Gradt, Thomas T1 - Influence of TiC content on the tribological behavior of NbC-Ni-TiC cermets N2 - Increasing demand for alternatives to tungsten carbide (WC) cemented carbides as cutting tools, due to the health risks of their wear products WO3 and Co3O4. Niobium carbide (NbC) has a high potential, due to its high wear resitance, high hot hardness and melting point (3520°C), and low solubility in iron alloys. T2 - 23rd International Conference on Wear of Materials CY - Online meeting DA - 26.04.2021 KW - Niobium carbide (NbC) KW - Cermets KW - Tribological behavior PY - 2021 AN - OPUS4-52560 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Marc Benjamin T1 - Combined cell and nanoparticle models for TOPAS to study radiation dose enhancement by Monte-Carlo based particle scattering Simulations N2 - Dose enhancement by gold nanoparticles (AuNP) increases the biological effectiveness of radiation damage in biomolecules and tissue. To apply them effectively during cancer therapy their influence on the locally delivered dose has to be determined.[1] Hereby, the AuNP locations strongly influence the energy deposit in the nucleus, mitochondria, membrane and the cytosol of the targeted cells. To estimate these effects, particle scattering simulations are applied. In general, different approaches for modeling the AuNP and their distribution within the cell are possible. In this work, two newly developed continuous and discrete-geometric models for simulations of AuNP in cells are presented. [2] These models are applicable to simulations of internal emitters and external radiation sources. Most of the current studies on AuNP focus on external beam therapy. In contrast, we apply the presented models in Monte-Carlo particle scattering simulations to characterize the energy deposit in cell organelles by radioactive 198AuNP. They emit beta and gamma rays and are therefore considered for applications with solid tumors. Differences in local dose enhancement between randomly distributed and nucleus targeted nanoparticles are compared. Hereby nucleus targeted nanoparticels showed a strong local dose enhancement in the radio sensitive nucleus. These results are the foundation for ongoing experimental work which aims to obtain a mechanistic understanding of cell death induced by radioactive 198Au. T2 - NALS 2022 CY - Santander, Spain DA - 27.04.2022 KW - AuNP KW - Beta decay KW - beta particle KW - Brachytherapy KW - Cancer treatment KW - Clustered nanoparticles KW - DNA KW - DNA damage KW - Dosimetry KW - Energy deposit KW - Geant4 KW - Geant4-DNA KW - Gold Nanoparticles KW - LEE KW - Livermore model KW - Low energy electrons KW - MCS KW - Microdosimetry KW - Monte-Carlo simulation KW - NP KW - OH radical KW - particle scattering KW - Penelope model KW - Radiation damage KW - Radiation therapy KW - Radiationtherapy KW - Radioactive decay KW - Radiolysis KW - Simulation KW - TOPAS KW - TOPAS-nbio PY - 2022 AN - OPUS4-54775 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strommer, Bettina T1 - Natural Rubber Nanocomposites via Optimized Latex Premixing and Conventional Technical Processing N2 - Creation of highly functional materials and replacement of high amounts of conventional fillers are driving forces for the development of nanocomposites. Besides the type and properties of nanoparticles, their dispersing in the elastomeric matrix and the stability of this dispersion through all processing steps are the main factors for the resulting performance of the produced material. Therefore, a preparation chain via latex premixing to a highly filled masterbatch, followed by conventional technical processing is to be developed. Three types of carbon-based particles are characterized as such (SEM, Raman Spectroscopy, BET specific surface area) and in combination with natural rubber, as nanocomposites (TEM. Hardness, Abrasion resistance, Compression set, Cone calorimetry). All of the studied particles lead to an improvement in the investigated mechanical properties, the extent of reinforcement depends strongly on the specific surface of the particle interacting with the elastomeric matrix in combination with their shape. T2 - DKG Elastomer Symposium CY - Online meeting DA - 28.06.2021 KW - Processing KW - Elastomers KW - Nanocomposites KW - Graphene KW - Nanoparticles KW - Latex KW - Natural rubber PY - 2021 AN - OPUS4-53106 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Battig, Alexander T1 - Multifunctional Graphene in Flame Retarded Polybutadiene/ Chloroprene/ Carbon Black Composites N2 - Multilayer graphene is investigated as a multifunctional nanofiller to polybutadiene/ chloroprene rubbers (BR/CR) that partially substitutes carbon black (CB) and aluminum trihydroxide (ATH). Loadings of only 3 parts per hundred rubber (phr) MLG replaced 15 phr of CB and/or 3 phr of ATH in BR/CR nanocomposites. Mechanical and fire behavior were investigated, and results point to improved rheological, curing and mechanical properties of MLG-containing rubber composites. T2 - 18th European Meeting on Fire Retardant Polymeric Materials, FRPM21 CY - Budapest, Hungary DA - 29.08.2021 KW - Graphene KW - Rubber KW - Fire Retardant KW - Nanofiller KW - Nanocomposite KW - ATH PY - 2021 AN - OPUS4-53202 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kolmangadi, Mohamed Aejaz T1 - Dynamics and conductivity of nanoconfined amino acid based superdiscs: Influence of the side chain length N2 - Ionic Liquid Crystals (ILCs) are emerging class of materials that combine the properties of liquid crystals with the ionic conduction similar to ionic liquids. It’s known that liquid crystals exhibit intriguing properties when confined and are of importance from both fundamental and technological perspective. Here, we study the molecular dynamics and electrical conductivity of a homologous series of Dopamine (DOPA) based ILCs, ILCn (n = 12,14,16) confined in self ordered nanoporous alumina oxide membrane of 180 nm pore size using Broadband Dielectric Spectroscopy (BDS). We aim to understand how the alkyl chain length and confinement influence the dynamics in this system. In the bulk, for all ILCs, we observe two relaxation modes in the crystalline phase, the  and α1 relaxation respectively, and one relaxation mode in the columnar phase, the α2 relaxation, but for ILC16, where two relaxation modes (α2 and α3) are detected in the columnar phase. For the confined case, all relaxation processes slowdown compared to the bulk. For ILC16, the α1 relaxation is completely suppressed. For all ILCs, the absolute values of DC conductivity are reduced by some three orders of magnitude. We discuss in detail the possible molecular origin of the relaxation processes and the charge transport in this system. T2 - CONFIT 2022 CY - Grenoble, France DA - 10.10.2022 KW - Ionic Liquid crystals KW - Nanoconfinement KW - Conductivity PY - 2022 AN - OPUS4-57341 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Omar, Hassan T1 - Investigations of Ultrathin Polymer Films Supported on Inorganic Substrates N2 - Interactions between a polymer and a substrate interface play a vital role in understanding the improvement in thin film material properties as well as serving as a model for nanocomposites. For any non-repulsive polymer-substrate interactions, polymer segments form an irreversibly adsorbed layer and show a slowdown in the glassy dynamics and thus an increase in the thermal glass transition temperature compared to the bulk-like values. The growth kinetics of the adsorbed layer showed a deviation for both poly (bisphenol-A carbonate) (PBAC) and polysulfone (PSU), two bulky polymers containing a functional group (phenyl ring) in the backbone. T2 - Royal Society of Chemistry (RSC) Online Poster Conference CY - Online meeting DA - 05.03.2024 KW - Adsorbed Layer KW - Thin Films KW - Atomic Force Microscopy KW - Ellipsometry PY - 2024 AN - OPUS4-59625 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Marc Benjamin T1 - BP150: Combined cell and nanoparticle models for TOPAS to study radiation dose enhancement by Monte-Carlo based particle scattering Simulations N2 - Dose enhancement by gold nanoparticles (AuNP) increases the biological effectiveness of radiation damage in biomolecules and tissue. To apply them effectively during cancer therapy their influence on the locally delivered dose has to be determined. Hereby, the AuNP locations strongly influence the energy deposit in the nucleus, mitochondria, membrane and the cytosol of the targeted cells. In this work, two newly developed continuous and discrete-geometric models for simulations of AuNP in cells are presented. We apply the presented models in Monte-Carlo particle scattering simulations to characterize the energy deposit in cell organelles by radioactive 198AuNP. They emit beta and gamma rays and are therefore considered for applications with solid tumors. Differences in local dose enhancement between randomly distributed and nucleus targeted nanoparticles are compared. Hereby nucleus targeted nanoparticels showed a strong local dose enhancement in the radio sensitive nucleus. T2 - DPG Frühjahrstagung CY - Dresden, Germany DA - 26.03.2023 KW - AuNP KW - Beta decay KW - Brachytherapy KW - Cancer treatment KW - Clustered nanoparticles KW - DNA KW - DNA damage KW - Dosimetry KW - Energy deposit KW - Geant4 KW - Geant4-DNA KW - Gold Nanoparticles KW - LEE KW - Livermore model KW - Low energy electrons KW - MCS KW - Microdosimetry KW - Monte-Carlo simulation KW - NP KW - OH radical KW - Penelope model KW - Radiation damage KW - Radiation therapy KW - Radiationtherapy KW - Radioactive decay KW - Radiolysis KW - Radiotherapy KW - Simulation KW - TOPAS KW - TOPAS-nbio KW - Beta particle KW - Particle scattering KW - Protein KW - Proteins PY - 2023 AN - OPUS4-57253 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Omar, Hassan T1 - Probing Nanoscale Relaxation Behavior in Thin Polymer Films N2 - The investigations into the complicated effects of film thickness on bulk properties of thin polymer films has yielded conflicting results. The reduction in molecular mobility, and with it an increase in the glass transition temperature, for thin films of poly (bisphenol A carbonate) (PBAC) was assigned to the formation of an adsorbed layer. The adsorbed layer was obtained by washing away the loosely bounded chains using a good solvent. Next, using atomic force microscopy (AFM), the thickness of each sample was measured after annealing for various times at three different annealing temperatures. The growth of this adsorbed layer was shown to deviate from the previously reported 2-step mechanism seen for other polymers. For PBAC, after very long annealing times at high temperatures the thin films were dewetted, where segments of the adsorbed layer were removed from the substrate. T2 - Royal Society of Chemistry (RSC) Poster CY - Online meeting DA - 28.02.2023 KW - Thin films KW - Adsorbed Layer KW - Broadband dielectric spectroscopy KW - Atomic force microscopy KW - Growth Kinetics PY - 2023 AN - OPUS4-57196 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Johann, Sergej T1 - RFID sensor system embedded in concrete –validation of UHF antenna geometries in different concrete depths N2 - This paper is a further research on the topic of the complete embedding of radio frequency identification (RFID) sensors in concrete. The Focus is on the antenna of the transponder. Earlier investigations of different RFID technologies, embedded in concrete, showed a difference in energy transmission. The transmission through concrete at ultra high frequency (UHF), in spite of the large signal range, does not match the targeted application specific task. Therefore, the antenna characteristics have been examined more closely. The antenna is an important component for the application of RFID. Through the antenna, energy and data Transfer takes place, so it is important to design an optimal antenna to accomplish a maximum embedding depths in concrete. To identify the optimal antenna geometry, different UHF antenna types were selected and investigated. An experimental comparison was performed to gain more information about the damping behavior and antenna characteristics in concrete. T2 - 34th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Trieste, Italy DA - 19.09.2017 KW - RFID sensors KW - Structural health monitoring KW - Passive RFID KW - UHF antenna KW - Sensors in concrete KW - Smart structures PY - 2017 AN - OPUS4-42094 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fontana, P. T1 - Healthier life with eco-innovative components for housing constructions N2 - The project has developed a variety of new multifunctional and flexible building components for a healthier indoor environment. [H] house solutions are durable, energy efficient, safe and affordable. They are suitable for use in new buildings and for renovation. [H] house solutions cover aspects of long service life, reduced maintenance and long-term improvement of energy efficiency. T2 - H-House Abschluss-Kolloquium, Dauerausstellung am Demonstrator-Gebäude CY - Warsaw, Poland DA - 23.08.2017 KW - Building materials KW - Beton KW - UHPC PY - 2017 AN - OPUS4-43003 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Studying nanoparticle-cell interaction by ICP-MS based techniques N2 - Nanoparticles (NPs) have found a wide range of applications in research and industry. Thereby the interaction of NPs with biological systems like cells has become a major field of interest, ranging from medical applications to nanotoxicology. Size, shape and surface modification of the nanomaterials determine the uptake rate and pathway into the cells, and therefore impact specific cell components and processes. Inductively coupled plasma mass spectrometry (ICP-MS) is a well-established analytical method offering high sensitivity and multi-element capability. By coupling a laser ablation (LA) system to an ICP-MS the analysis of different kinds of solid samples is possible. In recent years, it was shown that LA-ICP-MS can provide quantitative as well as distribution information of metal containing nanoparticles (NPs) in cell samples. Here LA-ICP-MS was applied for the imaging of individual fibroblast cells to study the uptake and intracellular processing of NPs. Our results show that LA-ICP-MS can be used to localize nanoparticle aggregates within cellular compartments. The studied NPs accumulate in the perinuclear region in the course of intracellular processing, but do not enter the cell nucleus. The uptake efficiency depends strongly on the physico-chemical properties of the nanostructures as well as on the incubation conditions like concentration and incubation time. ICP-MS was used to determine the composition of the nanomaterials as well as the number of NPs in cells after acid digestion of the samples. T2 - Workshop on Reference Nanomaterials CY - Berlin, Germany DA - 14.05.2018 KW - ICP-MS KW - Laser ablation KW - Nanoparticle KW - Cell PY - 2018 AN - OPUS4-45073 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rachmatulin, Natalia A1 - Gardei, André A1 - von Werder, Julia A1 - Meng, Birgit A1 - Süßmuth, J. A1 - Gerdes, A. T1 - Funktionalisierung von Polymerfasern - ein Beitrag der Tensidchemie für dauerhafte zementgebundene Werkstoffe N2 - Im Gegensatz zur Druckfestigkeit weisen zementgebundene Werkstoffe i. a. nur geringe Zugfestigkeiten auf. Ein Weg, Zugfestigkeiten zementgebundener Werkstoffe zu erhöhen und Rissbildung aufgrund von Zugspannungen zu verringern, besteht in der Einarbeitung von Fasern, die diese Spannungen aufnehmen. Häufig eingesetzt werden Stahlfasern, obwohl synthetische Polymerfasern leichter und meist beständiger gegenüber chemischen Angriffen und Korrosion sind. Die Polymerfasern zeigen allerdings meist einen deutlich schwächeren Haftverbund, was an der hydrophoben Faseroberfläche liegt. Um nun eine Anbindung der Fasern an die mineralische Matrix zu erreichen, müssen die Faseroberflächen modifiziert werden, ohne dass die mechanischen Eigenschaften negativ beeinflusst werden. Eine Herausforderung besteht somit in einer Oberflächenmodifikation durch eine schonende Behandlung der Fasern zur Erzeugung von anbindungsfähigen Gruppen. Durch eine Behandlung von modifizierten Fasern mit geeigneten Polymerlösungen werden die Oberflächeneigenschaften verändert und erlauben eine Anbindung an die Zementsteinmatrix. Der Einsatz von Tensiden als grenzflächenaktive Verbindungen ermöglicht in diesem Zusammenhang eine Vermittlung zwischen Polymeroberflächen und mineralischen Werkstoffen. T2 - HighTechMatBau CY - Berlin, Germany DA - 31.01.2018 KW - Zementgebundene Baustoffe KW - Lichtmikroskopie KW - Röntgen-3D-Computertomographie KW - Einzelfaserdurchzugsversuch KW - Windkanal KW - Fasermodifikation KW - Oberflächenfunktionalisierung KW - Grenzflächenaktive Verbindung PY - 2018 AN - OPUS4-44652 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Comparative study of lightweight aggregates N2 - Lightweight aggregates (LWA) are mixtures of porous grains of mineral origin characterised by particle bulk densities less than 2000 kg/m³ or loose bulk densities less than 1200 g/m³. They are used in concrete, mortar and grout in buildings, roads and civil engineering works. LWA are commonly produced by thermal treatment of natural raw materials such as clay, shale and other clayey or igneous rocks at temperatures between 1000 °C and 1300 °C. Expanded clay, expanded shale, vermiculite and expanded perlite are well-known aggregates used in the construction industry today. But porous LWA can also be manufactured from mineral residues, such as waste glass or masonry rubble, by thermal expending process. The source materials must satisfy two conditions. First, their chemical composition must be in balance between fluxing agents, silica and alumina to reach pyroplastic conditions at an economically viable temperature to develop sintering and melting phases of proper viscosity. Second, the material should contain some components, which ensure gas release during the partial melting, to form expanded porous particles. Lightweight aggregates usually show a heterogeneous and macroporous pore structure. Their solid skeleton is continually opened by large bulky pores whereas the skeletal walls contain many small pores. Additionally, the grains consist of partly melted areas. The specific microstructural and morphological characteristics of different LWA are strongly influenced by the great variety of source materials and the particular manufacturing conditions. Recycling granules (RC granules), which are lightweight aggregates made from masonry rubble containing about 50 % brick material, are already described in terms of manufacturing process, engineering properties and microstructure in. The objective of this study is to compare the chemical, physical, mineralogical and microstructural characteristics of RC granules with those of commercially produced expanded clay aggregates. Results of the ICP optical emission spectrometry, X-ray diffraction, thermal analysis, fusibility tests, particle shape analysis, porosity measurements, mercury intrusion porosimetry und environmental scanning electron microscopy are presented. The microstructural characteristics are correlated with engineering properties of the lightweight aggregates, such as water absorption and particle strength. The study was part of two research projects that were supported by the Federal Ministry of Education and Research in the framework of the funding initiative “r2-Innovative Technologies for Resource Efficiency - Resource-Intensive Production Processes” and the Bundesministerium für Wirtschaft und Energie in the framework of the Central Innovation Programme for SMEs. T2 - 11th International Symposium on the Charcterization of Porous Solids (COPS-XI) CY - Avignon, France DA - 14.05.2017 KW - Lightweight aggregates (LWA) KW - Composition and pore structure KW - Recycling granules KW - Expanded clay PY - 2017 AN - OPUS4-44120 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Küttenbaum, Stefan T1 - Messergebnisse zerstörungsfreier Prüfverfahren in statischen Berechnungen N2 - Steigende Anforderungen an Brückenbauwerke in Deutschland gehen mit der Alterung und dem sich zunehmend verschlechternden Zustand bestehender Bausubstanz einher. In der aktuellen Entwicklung wurde die Notwendigkeit von Nachrechnungen der Standsicherheit erkannt. Die Zuverlässigkeitstheorie bietet für das Bauwesen geeignete probabilistische Methoden zur Beurteilung von Tragwerken auf Basis der tatsächlichen Bauwerkseigenschaften. Die Verfahren der zerstörungsfreien Prüfung im Bauwesen ermöglichen die Messung quantitativer Kenngrößen, die den Zustand eines Bestandsbauwerks realitätsnah widerspiegeln. Um die Objektivität einer Messung zu wahren, wurden Methoden zur Gütebewertung von Messergebnissen zerstörungsfreier Prüfverfahren entwickelt und das Konzept der Validierung eingeführt. Damit sind die Voraussetzungen geschaffen, um statistisch abgesicherte und statisch relevante Informationen über die innere Konstruktion eines Tragwerks (ohne signifikante Zerstörung des Bauwerks) zu erheben. Der vorliegende Beitrag fasst die Beantwortung grundlegender Fragestellungen zusammen, um den Lückenschluss zwischen der statischen Nachrechnung von Brücken und der zerstörungsfreien Prüfung im Bauwesen herzustellen. Das Ziel ist die Verwendung von Messdaten der zerstörungsfreien Prüfverfahren als stochastische Eingangsgrößen in statischen Berechnungen. (...) T2 - DGZfP-Fachtagung Bauwerksdiagnose 2018 CY - Berlin, Germany DA - 15.02.2018 KW - ZfP KW - ZfPBau KW - Zuverlässigkeitstheorie PY - 2018 AN - OPUS4-44225 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goglin, Veronika T1 - Influence of the fiber volume fraction and matrix stiffness on ultra-high performance fiber reinforced concrete subjected to direct tensile loading at moderate strain rates N2 - The mechanical behavior of normal strength and high-strength concretes under tension can be significantly improved by the incorporation of steel fibers. This improvement comprises not only an enhancement in strength and ductility, but also in energy absorption capacity, which makes steel fiber reinforced high-strength concrete potentially suitable for seismic design applications. Force transfer controlled processes between steel fibers and concrete matrix, i.e. fiber debonding and fiber pull-out during crack opening are the main mechanisms contributing to the high-energy dissipation characteristic of this composite material. In order to gain more information on the material efficiency under tension, a comparative study on different ultra-high performance fiber reinforced concretes (UHPFCs) subjected to direct tensile loading at moderate strain rates is presented. The experimental approach considered three UHPFC mixtures, incorporating two volumetric fractions of high-strength smooth steel fibers. The stiffness modification of the concrete matrix was realized by the addition of a copolymer. The direct tensile tests were conducted on small sized dumbbell shaped specimens at nominal strain rates of 0.000025 1/s and 0.01 1/s, representing quasi-static and seismic loading conditions, respectively. For a detailed analysis of crack formation and crack propagation during load application, classical tensile tests were accompanied by non-destructive measuring technique using digital image correlation (DIC). Furthermore, relevant material parameters, such as such as first and post cracking stresses, strain capacity, and energy absorption capacity are determined and discussed. T2 - 20th International Conference, 20. ibausil CY - Weimar, Germany DA - 12.09.2018 KW - UHPFC KW - Moderate strain rates KW - Tensile strength KW - Energy absorption capacity KW - Crack formation and propagation PY - 2018 AN - OPUS4-45772 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krütt, Enno T1 - Fatigue-induced degradation in pavement concrete and its effect on alkali-silica reaction N2 - In recent years the German motorway network has seen an increase in the occurrence of damage to concrete road surfaces that can be attributed to the alkali-silica reaction (ASR). The effects of mechanically-induced damage resulting from cyclic traffic and climatic loading have previously not been taken into consideration while developing ASR test procedures. Therefore this contribution investigates the influence of fatigue mechanical loading on the ASR. T2 - SLD 4 CY - Delft, The Netherlands DA - 26.08.2018 KW - Fatigue KW - Pavement KW - ASR PY - 2018 AN - OPUS4-45729 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Claudia T1 - Standardization in emerging technologies - The case of additive manufacturing N2 - Additive Manufacturing provides an important enabling technology for the digital transformation of the economy. As an emerging technology it has seen a remarkable development over the last three decades. Nevertheless, it is far from a broad adoption with several barriers to overcome yet. One of the major challenges is the lack of standards. The critical role of standardization for innovation is generally recognized, still the topic too often has been neglected in strategic roadmapping exercises for emerging technologies. Too little is known about the complex dynamics and interrelations of standardization and innovation. The anticipation of standardization needs and the timely and efficient implementation of standards is challenging. This paper aims at contributing to a better understanding of the role that standards play in the multi-dimensional system of innovation. It analyzes the trajectories of innovation in Additive Manufacturing in a systematic and holistic way, focusing on standardization activities with regard to coordination, stakeholders involved, the timing and types of standards developed. Putting standardization in context of the multi-dimensional innovation system of Additive Manufacturing the research shows where standards can support the diffusion of an emerging technology. T2 - ITU Kaleidoscope Academic Conference: Challenges for a data-driven society CY - Nanjing, China DA - 27.11.2017 KW - 3D-Printing KW - Additive Manufacturing KW - Emerging technologies KW - Standardization KW - Standards KW - Technological innovation PY - 2017 AN - OPUS4-49082 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Werner, Tiago T1 - Structural integrity of cold spray repaired aerospace components N2 - Components in aircrafts are usually replaced when critical defects are present. An alternative approach is repairing using gas dynamic cold spraying: metal particles are shot at a surface at supersonic speeds to selectively rebuild damaged material. Compared to other material-deposition techniques, its advantage is the small thermal impact on the component, preserving its mechanical properties. Component-repair can save considerable amounts of energy and resources. However, its industrial application at large scale needs reproducible, good repair-material properties to guarantee a safe component life. The aim of this project is the development of safe, automatized repair-procedures considering the mechanical fatigue properties of the repair. T2 - ICEAF VII Conference 2023 CY - Spetses, Greece DA - 21.06.2023 KW - Cold Spray KW - Repair KW - Fatigue KW - Fatigue Crack Growth KW - Slow Strain Rate Testing PY - 2023 AN - OPUS4-57784 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kolmangadi, Mohamed Aejaz T1 - Confinement induced relaxations and phase behavior of a nanoconfined ionic liquid crystal N2 - Liquid crystalline mesophases in nanoconfinement exhibit intriguing phase transition behaviors and relaxation dynamics. Here in, we investigate the molecular dynamics and electrical conductivity of a linear shaped guanidinium based ILC confined in self-ordered nano porous alumina oxide membranes of pore size ranging from 180nm down to 25nm by employing broadband dielectric spectroscopy (BDS) and calorimetry. Calorimetric investigation reveals a complete suppression of the columnar – isotropic transition, while the plastic crystalline – columnar transition temperature decreases with inverse pore size and deviates from the Gibbs – Thomson equation. For the bulk case, BDS detects two relaxation modes in the crystalline phase, the  relaxation and the α1 relaxation, and two relaxation modes in the columnar phase, the α2 and α3 relaxation. For the confined case, all relaxation modes slow down compared to the bulk. However, for the least pore size (25 nm), the α2 relaxation is absent. We discuss the possible molecular origins of the different relaxation modes observed. For the bulk ILC, a clear jump of 4 orders of magnitude in the absolute values of DC conductivity occurs at the transition from the plastic crystalline to hexagonal columnar phase, for the confined ILC, this transition is smooth. DC conductivity is reduced for the confined case, except for the 25nm, where the values is similar to the bulk. T2 - 11th IDS conference 2022 CY - San Sebastian, Spain DA - 03.09.2022 KW - Ionic Liquid crystals KW - Nanoconfinement KW - Conductivity PY - 2022 AN - OPUS4-55879 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Huismann, Sven T1 - Influence of Polypropylene Fibres on the Thermal Strain of High Strength Concrete at High Temperatures T2 - Sixth International Conference on Structures in Fire CY - East Lansing, MI, USA DA - 2010-06-02 PY - 2010 AN - OPUS4-21499 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Offenporiger Asphalt - Porenstrukturanalyse - Untersuchungsergebnisse zur quantitativen Strukturaufklärung, Exponat: Modell einer CT-Messkonfiguration zur Strukturaufklärung von Asphalten T2 - Abschlussveranstaltung zum Forschungs-Verbundprojekt "Leiser Straßenverkehr" CY - Berlin, Germany DA - 2009-09-02 PY - 2009 AN - OPUS4-22223 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Martin T1 - Bildgebende Ortung von Ablösungen in mehrschichtigen Betonbauteilen mit dem Ultraschallecho-Verfahren T2 - Fachtagung Bauwerksdiagnose, 18.-19.02.2010, Berlin CY - Berlin, Germany DA - 2010-02-18 PY - 2010 AN - OPUS4-22997 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Nanoskaliger Kieselsäureschlamm - Verwertung in hydraulischen Bindemitteln T2 - Clustreffen NanoCare/NanoNature-Fördermaßnahmen (öffenltiche Informationsveranstaltung des BMVBS) CY - Frankfurt am Main, Germany DA - 2011-05-10 PY - 2011 AN - OPUS4-23805 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Döhler, M. T1 - Structural Health Monitoring during Progressive Damage Test of S101 Bridge T2 - IWSHM 2011, "The 8th International Workshop on Structural Health Monitoring 2011" CY - Stanford, CA, USA DA - 2011-09-13 PY - 2011 AN - OPUS4-24582 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Robens, E. T1 - Measurement of water vapour sorption and humidity T2 - XLVI. Meeting of the Polish Chemical Society and the Association of Engineers & Technicians of Chemical Industry CY - Lublin, Poland DA - 2003-09-15 PY - 2003 AN - OPUS4-4683 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baeßler, Matthias T1 - Experimentelle Untersuchungen des Schotterverhaltens auf Brücken unter großen Beschleunigungen T2 - Hannovermesse CY - Hanover, Germany DA - 2002-04-15 PY - 2002 AN - OPUS4-6576 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weise, Frank A1 - Pirskawetz, Stephan T1 - Detektion von Rissen in Fundamenten von Windenergieanlagen T2 - Nesse Husum Wind CY - Husum, Germany DA - 18.09.2007 PY - 2007 AN - OPUS4-15916 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Untersuchungen an Beton mit Hausmüllverbrennungsasche als Gesteinskörnung T2 - Tagung Bauchemie, Fachgruppe Bauchemie der GDCh CY - Siegen, Germany DA - 2007-09-27 PY - 2007 AN - OPUS4-14850 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Investigation on the structure of silica/polyurethane nanocomposites N2 - Inorganic-organic nanocomposites are synthesised from polyethylene glycol with an average molar mass of 600 g/mol containing colloidal silica (silicic acid) and diphenyl methane diisocyanate as compact and foamed materials according to the European patent EP1414880. Beside the macroscopic properties, the pore structure and the structure of the polymer matrix of the silica/polyurethane nanocomposites with varying silica contents were studied. T2 - 8th International Symposium on the Characterisation of Porous Solids CY - Edinburgh, Scotland DA - 11.06.2008 PY - 2008 AN - OPUS4-16445 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Pore structure of concrete with recycling aggregates N2 - Processed building rubble containing about 90 % of crushed concrete can be used as recycling aggregates. The reuse for the production of new high-grade concrete requires a knowledge of the engineering properties as well as the pore structure of These materials. Two recycling aggregates and the concretes made with them were studied. T2 - 33th International Geological Congress (IGC) Symposium on Mineral Resources - Constructions Materials (MRC) CY - Oslo, Norway DA - 06.08.2008 PY - 2008 AN - OPUS4-16778 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herbst, Tristan T1 - Saving resources by material recycling T2 - 2nd International Workshop, Mechanisms and modelling of waste/cement interactions CY - Le Croisic, France DA - 2008-10-12 PY - 2008 AN - OPUS4-17688 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Alterungsverhalten von Fugenfüllsystemen in Verkehrsflächen - Performance-orientierte Systemkennzeichnung - T2 - (AG-Präsentation zur Evaluierung WR 2006) - Ergebnispräsentation bei Auftraggeber und Betreuungsgremium CY - Berlin, Germany DA - 2006-01-17 PY - 2006 AN - OPUS4-18123 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Improving porous asphalt by research on the clogging process T2 - Eurobitume & Eurasphalt Kongress CY - Copenhagen, Denmark DA - 2008-05-21 PY - 2008 AN - OPUS4-18238 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs T1 - Zement und Beton - Entwicklung und Normung seit 1824 T2 - Denkmal an Beton, Denkmal 2008 - Messe zur Denkmalpflege CY - Leipzig, Germany DA - 2008-11-20 PY - 2008 AN - OPUS4-18255 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jakubcová, Petra T1 - Leichtgranulate aus heterogenem Bauschutt zur Herstellung von Beton N2 - Untersucht wird die Entwicklung einer Technologie zur Herstellung hochwertiger Leichtgranulate (Blähgranulate) mit definierten Produkteigenschaften aus heterogenen Bau- und Abbruchabfällen, Anwendung der Granulate als leichte Gesteinskörnung im Beton und die Möglichkeit des rohstofflichen Recyclings mineralischer Bauabfälle T2 - r2- Statusseminar 2011, "Innovative Technologien für Ressourceneffizienz - rohstoffintensive Produktionsprozesse, Fraunhofer-Institut CY - Berlin, Germany DA - 26.10.2011 PY - 2011 AN - OPUS4-24717 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ramge, Peter T1 - Natursteinersatzmassen für denkmalgeschütztes Kulturgut T2 - XVI. Workshop über die CHarakterisierung von feinteiligen und porösen Festkörpern CY - Bad Soden, Germany DA - 2012-11-13 PY - 2012 AN - OPUS4-27464 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Geotechnical and Geophysical Characterization of a Pile Test Site in Postglacial Soil T2 - SAGEEP 2013 CY - Denver, CO, USA DA - 2013-03-17 PY - 2013 AN - OPUS4-28057 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maack, Stefan T1 - Räumliche Kenngrößen des Schallfeldes punktförmiger Ultraschall-Prüfköpfe im Niederfrequenz-Bereich in Polyamid - Experimentelle Untersuchungen und Simulation T2 - DGZfP Jahrestagung CY - Dresden, Germany DA - 2013-05-06 PY - 2013 UR - http://jt2013.dgzfp.de/Portals/jt2013/BB/poster7.pdf AN - OPUS4-29346 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drescher, Daniela T1 - Investigation of nanoparticle-cell interactions by combining SERS with laser ablation ICP-MS and 3D X-ray tomography T2 - 9th Workshop FT-IR Spectroscopy in Microbiological and Medical Diagnostics CY - Berlin, Germany DA - 2013-10-24 PY - 2013 AN - OPUS4-29378 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rogge, Andreas T1 - Bauteile mit hohem Energiedissipationsvermögen als Schutz-Vorrichtung bei stoßartiger Beanspruchung (BENEDISS) T2 - 6. Workshop BAU-PROTECT - Schutz der baulichen Infrastruktur vor außergewöhnlichen Einwirkungen CY - Bad Reichenhall, Germany DA - 2014-11-18 PY - 2014 AN - OPUS4-31503 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin A1 - Hartmann, A. T1 - Kristallisationsprozesse in stark alkalischen Aufschlusslösungen von Aschen aus der Verbrennung von Schlämmen der Altpapieraufbereitung T2 - 21st Annual Conference of the German Crystallographic Society CY - Freiberg, Germany DA - 2013-03-19 PY - 2013 AN - OPUS4-30366 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vela-Wallenschus, Iris T1 - Fire risk assessment of industrial facilities and critical infrastructures T2 - Partnering Event: Franco-German Coordinated Call for Proposals on Protection of Critical Infrastructures CY - Cologne, Germany DA - 2014-02-26 PY - 2014 N1 - Geburtsname von Vela-Wallenschus, Iris: Vela, I. - Birth name of Vela-Wallenschus, Iris: Vela, I. AN - OPUS4-30446 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Themengruppe 6 "Leise Straßenbeläge", Poster 2 "Offenporige Asphalte - Warum ist der offenporige Asphalt leise?", Poster3 "Offenporige Asphalte - Computertomographie zur Strukturanalyse", Poster 5 "Gussasphalt mit offenporiger Oberfläche - Weiterentwicklung einer Bauweise" T2 - Abschlussveranstaltung des Verbundvorhabens "LEISTRA 3" mit öffentlicher Päsentation der Ergebnisse CY - Munich, Germany DA - 2014-06-24 PY - 2014 AN - OPUS4-31248 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Johann, Sergej T1 - Passive RFID Transponder – Low-Power Multi-Sensor Interface for Structural Health Monitoring in Concrete N2 - Structural Health Monitoring (SHM) has become very important in today's rapidly developing time. High buildings, large bridges and complex technical structures need to be monitored continuously and this over long periods. Visual monitoring cannot evaluate the internal condition of building structures. Thus, material embedded sensors are needed. Cable connection of these sensors pose the disadvantage of weak spots and water intrusion. For concrete embedded sensors the use of batteries is not convenient, because of limited lifetime, difficult charging, and generation of electrical waste.. Hence, monitoring should be implemented preferentially with firmly embedded passive RFID sensor modules. However, since the concrete structure forms an electromagnetically reflective and absorbing barrier, only limited energy can be transmitted to the module. This project requires a highly energy-saving system, which can record different sensor parameters at critical points. T2 - 35th Danubia - Adria Symposium on Advances in Experimental Mechanics CY - Sinaia, Romania DA - 25.09.2018 KW - RFID KW - Structural Health Monitoring KW - Pssive sensorinterface KW - Concrete PY - 2018 AN - OPUS4-46099 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Weathering scenarios – Changes in polymer surface morphologies and leaching of brominated flame retardants N2 - In addition to previously reported results on the simulated aging of polystyrene samples (PS) containing 1 wt. % hexabromocyclododecane (HBCD), we present the first results of our investigations of polypropylene (PP)-samples containing 0.1 wt. % BDE-209. All studied polymer samples were exposed to a defined weathering schedule in a climate chamber in accordance to regulation EN ISO 4892-3:2006.For the determination of BDE-209 in the collected rain water samples derived from the used climate chamber, the samples were prepared in accordance with a validated protocol. Before the analyses, each sample was spiked with 2 µL of isotopically labeled BDE-209 (13C10-BDE-209) to serve as internal standard (ISTD) in the performed stable isotope dilution analysis. Subsequently the samples were extracted with isooctane, the obtained aliquots of the extracts were concentrated to 200 µL and 2 µL of the resulting solution were injected to the GC/MS for quantification. Additionally, the total bromine contents are monitored for the aged and untreated samples using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) as well as X-ray fluorescence analysis (XRF) as non-destructive and rapid method. Furthermore, results from surface analysis using environmental scanning electron microscopy (ESEM) for morphological characterization of the aged and untreated samples were presented and discussed. In general, the resulting data from the accelerated aging will be compared to those from the natural weathering experiments (“atmospheric exposure”, in soil). The atmospheric exposure was performed by placing the samples on a weathering rack, which is aligned in SW direction (in a 45° angle to the horizon). The weathering data were regularly recorded by Deutscher Wetterdienst at this site. The surfaces of the test specimens (aged and stored references) were analyzed by ESEM as well as by LA-ICP-MS and by XRF. The surface of PS and PP specimens aged outdoors present the aging under real conditions and allow the comparison to the accelerated aged specimens by means of the weathering chamber. This way, we explore the efficiency of the accelerated aging procedure, which provides the advantage of well-defined and reproducible conditions compared to natural weathering, as a tool for testing different plastic materials. Additionally “in soil” experiments were conducted in-door in a well characterized testing soil. The soil (boulder-clay, sand with 12 % loam, particle size in total 0.2-4 mm) is filled in a free-draining concrete basin inside of an air-conditioned room. In this manner, TOC, water capacity and humidity are recorded parameters. To assure a washing out process from the samples by the raining water, the target water content is calculated to 8%. The actual humidity is measured by a tensiometer, assuring the duration of the raining period. The water content is additionally monitored by weight of the basin, capturing water from raining periods. The correct humidity is a fundamental parameter for biological activity. Samples of PS resp. PP were of dimension 10x1cm and 5 specimens were placed up to the half in the soil per basin. Microbial activity of the soil, monitored by the reference polyurethane, sets HBCD resp. BDE-209 of the samples free and will be leached from the samples by raining water. Thereafter these will be captured by passive samplers placed in a distinct distance to the samples in the soil. The “in soil” experiments are complementary to the weathering experiments due to the biological activity in the soil. These experiments simulate the fate of the brominated flame retardants in the biosphere. T2 - Umwelt 2018 CY - Münster, Germany DA - 09.09.2018 KW - BFR KW - Weathering KW - PP KW - PS PY - 2018 AN - OPUS4-47029 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf T1 - Electrochemical immunosensing with a 3-dimensional microfluidic flow cell N2 - Immunoassays, based on analyte recognition and capture by highly selective antibodies with high affinity, are intensively used in all fields of laboratory diagnostics and in screen-ings of food and environmental samples. Yet, for many purposes, online sensors are desir-able, and, in principle, all immunoassay tech-niques can be integrated into lab-on-chip set-ups that can work as continuous monitoring devices. Yet, the challenge remains to devel-op platforms and elements that are fit for a quick transition of laboratory microplate as-says to immunosensors. T2 - European Biosensor Symposium CY - Aachen, Germany DA - 28.08.2023 KW - Biosensor KW - Antibodies KW - Microfluidics KW - Electrochemical detection PY - 2023 AN - OPUS4-59240 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strangfeld, Christoph T1 - Frequency modulated, air-coupled ultrasound generated by fluidic oscillators N2 - The majority of ultrasonic devices used for non-destructive testing in civil engineering require contact with the surface of the concrete (specimen), which significantly increases the time required for the measurement. This makes it impractical for extensive investigation of large-scale structures such as bridge decks, foundations, or tunnels. In a pioneering approach, fluidic oscillators are used as contact free ultrasonic sources to overcome the aforementioned limitations. These robust and cost-effective actuators require only pressurised air and are ideally suited for harsh environments. At a constant supply pressure, they generate a continuous monofrequent actuation signal. Further, varying the supply pressure via a fast pressure regulator was found to generate a frequency modulated signal which enabled time-of-flight measurement with an added advantage of increased signal to noise ratio. To demonstrate the feasibility of this novel idea of non-contact ultrasound, the results of the initial tests are presented. T2 - IEEE International Ultrasound Symposium CY - Venice, Italy DA - 11.10.2022 KW - Air coupled ultrasound KW - Frequency modulation KW - Non-destructive testing KW - Civil engineering KW - Building materials KW - Fluidic oscillators PY - 2022 AN - OPUS4-56069 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kjaervik, Marit T1 - Surface characterisation of biofilms by nearambient pressure X-ray photoelectron spectroscopy N2 - The XPS information depth of approximately 10 nm is in the same size range as the outer membrane of the gram-negative bacteria, which makes XPS a suitable tool for determining the elemental composition of the bacterial surface and monitor changes caused by outer stress like dehydration or exposure to antimicrobials. However, bacteria are inherently in a hydrated state, and therefore only compatible to ultra-high vacuum after extensive sample preparation, which may degrade the sample constituents. This issue is addressed by the development of near-ambient pressure (NAP)-XPS, which enables bacteria and biofilms to be characterised in their native wet state. Artificial biofilms, bacteria and biofilms of Escherichia coli have been characterised with the laboratory NAP-XPS instrument EnviroESCA from SPECS GmbH, at pressures ranging from high vacuum to 12 mbar, and in both humid and dry environment. By studying biological samples in their native wet state, new insight about composition and transport of drugs through cell membranes and the extracellular polymeric substance (EPS) of biofilms can be obtained. T2 - Royal Society of Chemistry Twitter Conference CY - Worldwide (online conference) DA - 06.03.2018 KW - Biofilms KW - E. coli KW - Alginate KW - NAP-XPS PY - 2018 AN - OPUS4-44498 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kjaervik, Marit A1 - Seim, C. T1 - EMPIR project Metrology vs. Bad Bugs aims to provide urgently needed metrology to quantitatively measure localization and penetration of antibiotics and biocides in bacteria and biofilms N2 - An overview of ongoing reference-free X-ray spectrometry, near-ambient pressure X-ray photoelectron spectroscopy and Fourier-Transform infrared micro-spectroscopy studies on the penetration of biocides/antibiotics into bacteria and biofilms is given. T2 - Ninth Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 13.12.2017 KW - Biofilms KW - Alginate KW - XRF KW - FTIR KW - NAP-XPS PY - 2017 AN - OPUS4-43465 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Innovatives Messsystem - SensoJoint N2 - Permanent erfolgen konstruktive Verbesserungen der Bauwerke, stoffliche Weiterentwicklungen der Baustoffsysteme sowie technologische Optimierungen der Bauprozesse. Damit einhergehende Veränderungen, z.B. im Reaktionsverhalten der Betonfahrbahndecke unter äußeren Beanspruchungen, kumulieren in sensiblen Bereichen wie z.B. den Fugenbereichen. Der Posterbeitrag „Innovatives Messsystem -Sensojoint" stellt ein Messsystem vor, dass entsprechend den Anforderungen der Straßenbaupraxis Deformationen/Formänderungen von Bauteilen der Verkehrsinfrastruktur in 3 Richtungsachsen erfassen kann. Die hoch auflösende Sensorik wurde speziell für eine Anwendung direkt in der Rollspur des Schwerverkehrs von hochbeanspruchten Betonfahrbahndecken ausgelegt, so dass nicht nur klimatisch induzierte Deformationen sondern auch verkehrsinduzierte relative Fugenbewegungen erfasst werden können. Für das Projekt „SensojointField" wurde für den Sensoreinsatz eine komplette Messstation zur Untersuchung der Fugenbewegungen in hochbeanspruchten Betonfahrbahnen entwickelt, die für lang andauernde Messkampagnen im Feld konfiguriert wurde. T2 - Jubiläumskongress 100 Jahre Deutscher Straßen- und Verkehrskongress CY - Bonn, Germany DA - 23.10.2024 KW - Infrastruktur KW - Innovative Untersuchungsmethodik KW - Performance-concept PY - 2024 AN - OPUS4-61541 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Karapanagiotis, Christos T1 - Machine learning for strain, temperature and humidity discrimination in Brillouin optical frequency domain analysis N2 - We propose to our knowledge for the first time an ensemble of probabilistic machine learning models for strain, temperature and humidity discrimination in Brillouin optical frequency domain analysis (BOFDA) applying a two-fiber configuration. T2 - 28th International Conference on Optical Fiber Sensors CY - Hamamatsu, Japan DA - 20.11.2023 KW - Multiparameter sensing KW - Fiber optic sensors KW - Machine learning KW - Structural health monitoring PY - 2023 AN - OPUS4-59396 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kanzler, D. A1 - Schmitt, M. A1 - Maack, Stefan A1 - Baensch, F. T1 - Erarbeitung einer Norm für einen standardisierten Prozess zur probabilistischen Bewertung von Prüfverfahren N2 - Im DIN-Normenausschuss Materialprüfung (NMP) wurde das Normungsgremium NA 062-08-28 AA „Qualifizierung von zerstörungsfreien Prüfungen“ reaktiviert. Das Ziel der Reaktivierung ist die Erarbeitung einer Norm für einen standardisierten Prozess zur probabilistischen Bewertung von Prüfverfahren. In der zerstörungsfreien Prüfung (ZfP) führt die Ermittlung von Mess- / Prüfunsicherheiten von Prüfverfahren, in normativer Hinsicht in Deutschland und Europa, noch ein Schattendasein. Die Norm ISO IEC 17025 und auch der VDA-Band 5 wurden weiter in Richtung Messunsicherheit entwickelt, allerdings führt ihre Anwendung in der ZfP zu Problemen. Der Arbeitsausschuss NA 062-08-28 AA soll hier den Brückenschlag zwischen Messunsicherheit, objektiver statistischer Bewertung für ZfP-Verfahren und eine weitere Stärkung der probabilistischen Bruchmechanik erreichen. Geplant ist daher die Erarbeitung einer DIN-Norm, welche die Kriterien für eine korrekte Versuchsplanung, ein praktikables Vorgehen zur Bewertung der Prüfergebnisse und die mathematische Überführung in eine Zuverlässigkeitsaussage enthält. Es soll ein Leitfaden erstellt werden, der für ein möglichst breites Branchenspektrum eingesetzt werden kann, unabhängig von den Besonderheiten verschiedener Industriezweige. Dargestellt werden das relevante Normungsgremium sowie der Hintergrund des zu erstellenden Dokuments. T2 - DACH-Jahrestagung 2023 CY - Friedrichshafen, Germany DA - 15.05.2023 KW - Validation KW - Normung KW - Probability of Detection PY - 2023 AN - OPUS4-58344 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Binder, F. T1 - Ein praxisnaher Leitfaden für computertomografische Untersuchungen mit der radiografischen Simulationsumgebung aRTist N2 - Radiografische Simulationswerkzeuge wie aRTist, ScorpiusXLab, SimCT oder CIVA CT verwenden analytische Methoden und physikalische Monte-Carlo-Teilchentransportsimulationen, um die Interaktionsprozesse zwischen Röntgenstrahlung und Materie zu simulieren. Die berechneten Projektionen bilden anschließend unter Berücksichtigung einer definierten Scan-Trajektorie die Basis der Simulation einer röntgencomputertomografischen Untersuchung. Radiografische Simulationswerkzeuge befinden sich in einem stetigen Wandel, beispielsweise durch die Entwicklung neuer Rekonstruktionsmethoden, durch Erweiterung von analytischen Modellen, durch Integration komplexer Trajektorien oder durch Berücksichtigung von prozessbedingten geometrischen Abweichungen. Im laufenden EMPIR-Projekt „AdvanCT“ entsteht deshalb ein „Good Practice Guide“ für die Simulationsumgebung aRTist. Ziel dieses Guides ist es, die mit steigender Komplexität verbundenen Einstiegshürden für Anwender von aRTist zu reduzieren, um damit einen praxisnahen Zugang zur virtuellen Computertomografie zu ermöglichen. Dabei werden anhand von praktisch nachvollziehbaren Beispielen die grundlegenden Mechanismen der Simulationsumgebung erklärt und ein strukturierter Leitfaden zur Simulation röntgencomputertomografischer Untersuchungen mit aRTist vermittelt. In diesem Beitrag werden erste Auszüge des Guides sowie eine Übersicht der weiteren geplanten Themen für die anschließende Diskussion vorgestellt. T2 - DGZfP-Jahrestagung 2021 CY - Online meeting DA - 10.05.2021 KW - Computertomographie Simulation PY - 2021 AN - OPUS4-54030 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ecke, Alexander T1 - An Immunosensor for Pharmaceutical Contaminants in Water Supply N2 - Contamination of drinking water with pharmaceuticals is an emerging problem and a potential health threat. Immunochemical methods based on the binding of the analyte to specific antibodies enable fast & cost-effective on-site analyses. Magnetic bead-based immunoassays (MBBAs) allow for implementation into an immunosensor for online testing. Particles are prepared by either coupling the analyte molecule (diclofenac) or the respective antibody (amoxicillin) to the surface. For miniaturization, detection is performed electrochemically (chronoamperometry) on a microfluidic chip. The developed immunosensor will enable detection of pharmaceuticals directly in water supply pipes. T2 - Analytica Conference CY - München, Germany DA - 21.06.2022 KW - Immunosensor KW - Magnetic Particles KW - Microfluidics KW - Amperometry KW - Diclofenac KW - Amoxicillin PY - 2022 AN - OPUS4-55381 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bühling, Benjamin T1 - OsciCheck - Fluidic Generation of Ultrasound N2 - The OsciCheck project is presented. The working principle and sound field of a fluidic switch is described. Future goals of the project are presented. T2 - CoDA Summer School 2020 CY - Berchtesgaden, Germany DA - 28.09.2020 KW - Fluidic Switch KW - Air-coupled ultrasound KW - Ultrasound KW - Non-destructive testing KW - Fluidischer Schalter KW - Luftgekoppelter Ultraschall KW - Ultraschall KW - Zerstörungsfreie Prüfung PY - 2020 AN - OPUS4-51380 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schwettmann, K. T1 - Post carbon road - The endless cycle of bitumen reuse N2 - In Germany, the reuse of asphalt has a long tradition. Since the 1980s, the reclaimed asphalt has been recycled achieving a reuse rate of around 90% and thus a very high value in the last years. In the future, instead of the amount, the quality of the reclaimed asphalt will be more important because the recycled asphalt will be reused again and again. Thus, these asphalt mixes are in the second or even third cycle of reuse. Concerning this situation, the question arises if asphalt can be reused several times without any loss in quality. An important factor affecting the asphalt quality is the binder bitumen. During the production, construction and service life, the ageing of this binder occurs causing a hardening of the bitumen. To compensate this hardening, additives for the reclaimed asphalt in terms of rejuvenation agents (rejuvenators) gain in importance. With these rejuvenators, the physical properties of bitumen can be modified e.g. the hardness and the stiffness reduced. However, the mechanism of the rejuvenation agents and the effects of the bitumen chemistry are largely unknown because the composition of the products varies very strongly. But with growing knowledge about these mechanisms and effects of the rejuvenation agents, the chemical composition and thus the physical and ageing behavior of bitumen can be targeted modified by the use of suitable rejuvenators. In this work, the actual results of the project Postcarbone road should be presented including investigations about the chemical and physical mechanisms as well as the efficiency of different rejuvenators. Further, a model for the cyclic reuse of bitumen should be developed. Based on this model, the choice of a suitable rejuvenation agent for the considered bitumen or rather asphalt should be possible. The project Postcarbone road (392670763) is funded by the German Research Foundation (DFG). T2 - 7th Eurasphalt and Eurobitume Congress CY - Online meeting DA - 15.06.2021 KW - Bitumen KW - Multiple ageing and rejuvenation KW - Conventional testing KW - DSR KW - BBR KW - FTIR KW - Asphaltene content KW - Column chromatography PY - 2021 AN - OPUS4-53489 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bühling, Benjamin T1 - Influence of Operating Conditions on the Fluidic Ultrasonic Transducer Signal N2 - Motivation: • Air-coupled ultrasound (AC-US) enables faster measurements in non-destructive testing for civil engineering • Current state of the art: piezo and capacitive transducers are mostly used for AC US • Currently >99.9% sound intensity loss due to impedance mismatches Innovation: • Fluidic transducers generate US (30-60 kHz) by rapid switching of a supersonic jet • Fluidic transducers rely on external components such as solenoid valves and tubing --> How do repetition time and tube length influence the signal? T2 - DAGA 2021 CY - Vienna, Austria DA - 15.08.2021 KW - Ultrasound KW - Non-destructive testing KW - Fluidic devices PY - 2021 AN - OPUS4-53408 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Held, Felix T1 - Efficient model updating in structural analysis using PGD N2 - In this contribution a Proper Generalized Decomposition model is derived for linear elastic structures with Young's modulus as extra-coordinates. Next, the computed PGD solution is used in a Bayesian model updating algorithm resulting a probability distribution of the searched model parameter for given synthetic data. The future goal is to extend the method to be able to identify arbitrary material parameters, based on experimental data. T2 - EUROMECH Colloquium 597 CY - Bad Herrenalb, Germany DA - 28.08.2018 KW - Structural analysis KW - Efficient model updating PY - 2018 AN - OPUS4-48046 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Moosavi, Robabeh A1 - Grunwald, Marcel A1 - Redmer, Bernhard A1 - Nerger, Deborah A1 - Hille, Falk A1 - Kühn, T. A1 - Hering, M. T1 - Damage investigations of concrete under impact load using laminography N2 - We examine the behavior of reinforced concrete components subjected to impact induced loading conditions which might be caused by vessels collisions such as aircraft fuel tanks The concrete plates were impact damaged at TU Dresden and shipped to BAM At BAM laminar tomography as the imaging method is used to determine and quantify the damage state An automatic crack detection method based on template matching is applied to find the cracks and we aim to develop a new method using machine learning Algorithms In addition numerical models are developed to understand the experiment and to predict the damage structures based on failure mechanisms. T2 - DCMS Summer School MATERIALS 4.0 CY - Dresden, Germany DA - 10.09.2018 KW - Laminography KW - Crack detection KW - Reinforced concrete KW - 3D imaging PY - 2018 AN - OPUS4-48637 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulte, Franziska T1 - Analysis of synthetic organic pigments used in work of art and commercial paints by Raman spectroscopy T2 - Euroanalysis CY - Antwerp, Belgium DA - 2007-09-11 PY - 2007 AN - OPUS4-18081 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Börno, Fabian T1 - Laser Ablation Inductively Coupled Plasma Mass Spectrometry of Plastic Materials T2 - 11th European Workshop on Laser Ablation CY - Gijón, Spain DA - 2012-06-18 PY - 2012 AN - OPUS4-26474 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lindner, Uwe T1 - Speciation of Gadolinium in surface water samples and plants, analysed with HILIC-ICP-MS T2 - ICP-MS Anwendertreffen 2012 CY - Tulln an der Donau, Austria DA - 2012-09-10 PY - 2012 AN - OPUS4-27350 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Buurman, Merwe T1 - CO2-Laser Atmospheric Pressure Ionization of Acoustically Levitated Droplets T2 - SCIX CY - Kansas City, MO, USA DA - 2012-09-29 PY - 2012 N1 - Geburtsname von Buurman, Merwe: Albrecht, M. - Birth name of Buurman, Merwe: Albrecht, M. AN - OPUS4-27332 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Janine T1 - Determination of tributyltin in surface water systems T2 - 20. Jahrestag der SETAC GLB CY - Zurich, Switzerland DA - 2015-09-07 PY - 2015 AN - OPUS4-34301 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Holger T1 - An insight into fractionated environmental water samples to understand matrix effects in immunoassays N2 - N4-acetyl-SMX is the most important cross-reacting compound for the SMX-ELISA with concentrations of 1064 - 2488 ng/L in influent wastewater and 40 - 160 ng/L in effluent wastewater. The ELISAgrams for estrone show less interfering signals than for SMX. ELISAgrams of SMX and estrone display in effluent wastewater more interfering signals than in influent wastewater. T2 - ANAKON CY - Graz, Austria DA - 23.03.2016 KW - Sulfamethoxazole KW - Estrone KW - LC-ELISA KW - Matrix effects PY - 2015 AN - OPUS4-35792 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nietzke, Jonathan A1 - Konert, Florian T1 - Experimental and numerical characterization of hydrogen diffusion in thick-walled submerged arc welded joint of S420G2+M offshore steel grade N2 - Offshore wind turbines are an important goal in national energy strategies worldwide. Foundation structures are manufactured from submerged arc welded (SAW) plates with thicknesses up to 200 mm. In that connection, high-strength steels like the S420G2+M are more and more applied offering the possibility for increased stability and load-bearing capacity of the foundations. These offshore steel grades can show a susceptibility for delayed hydrogen assisted cold cracking of the weld joints. For that purpose, a minimum waiting time (MWT) of up to 48 h (dependent on applied standards) is recommended before non-destructive testing is allowed and conducted. But this concept is based on older steel grades that have been used for three or more decades. Nowadays, the metallurgical improvements (clean steels, proper rolling, and heat treatment) of base materials and well as welding consumables must be anticipated. Hence, the MWT concept should be critically discussed as it is assumed to be very conservative. For that reason, the focus of this study was to investigate the diffusion behavior in S420G2+M steel and its multi-layer SAW joint. Electrochemical permeation experiments were carried at room temperature. Boundary conditions were anticipated in terms of using different sample thicknesses. From the experimental data, hydrogen diffusion coefficients and absorbed diffusible hydrogen concentrations had been calculated. It was shown that hydrogen diffusion in the base material is increased compared to the weld metal. In addition, the sample thickness had a significant on the calculated diffusion coefficients. The minimum and maximum diffusion coefficients had been used for numerical modelling of the hydrogen diffusion in the welding joint. It became clear that a MWT must be always regarded together with a critical initial diffusible hydrogen concentration for the evaluation of a possible delayed cracking as diffusion times were mostly > 48 h due to the thick plates. T2 - 4th International Conference on Metals and Hydrogen - Steely & Hydrogen 2022 CY - Ghent, Belgium DA - 11.10.2022 KW - Hydrogen KW - Submerged arc welding KW - Minimum Waiting Time KW - Cold Cracking KW - Offshore steel grade PY - 2022 AN - OPUS4-56008 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fey, Gero T1 - Dilatometer-based welding simulation: CCT-Diagram and investigation of heat-affected zones in pipeline steels N2 - Presentation of the research project “Hydrogen-dependent mechanical properties of the weld microstructure of low-alloy steels for long-distance gas pipelines” and the present results at the Young Professionals International Conference (YPIC) of the International Institute of Welding (IIW) T2 - 2nd Online Young Welding Professional International Conference - YPIC2025 CY - Online meeting DA - 06.02.2025 KW - Pipeline steel KW - CCT KW - Dilatometry KW - Heat-affected zone PY - 2025 AN - OPUS4-62583 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fey, Gero T1 - Dilatometerbasierte Schweißsimulation: ZTU-Diagramme und Untersuchung der Wärmeeinflusszonen in Pipelinestählen N2 - Präsentation des Forschungsprojekts "Wasserstoffabhängige mechanische Eigenschaften der Schweißnahtgefüge niedriglegierter Stähle für Ferngasleitungen" und der bisherigen Ergebnisse auf der 28. Konferenz aller Werkstofftechnischen und Materialwissenschaftlichen Studiengänge (KaWuM) an der TU Ilmenau. T2 - 28. Konferenz aller Werkstofftechnischen und Materialwissenschaftlichen Studiengänge CY - Ilmenau, Germany DA - 07.11.2024 KW - ZTU-Diagramm KW - Wärmeeinflusszone KW - WEZ KW - Dilatometer KW - Pipelinestahl PY - 2024 AN - OPUS4-62418 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - A new robot-assisted compositional screening method N2 - The system Na2O.B2O3-SiO2 (NBS) is the basis of many industrial glass applications and therefore one of the most studied systems at all. Glass formation is possible over a wide compositional range, but the system also contains ranges of pronounced phase separation and crystallization tendency. Despite its importance, experimental data are limited to few compositional areas. The general understanding and modelling of glass formation, phase separation, and crystallization in this system would therefore be easier if small step melt series could be studied. The efficient melting of such glass series is now possible with the new robotic glass melting system at the Federal Institute for Materials Research and Testing (BAM, Division Glasses). Using three exemplary joins within this NBS system, the small step changes of glass transition temperature (Tg), crystallization behavior as well as glass density (Roh) was studied. Additionally, experimental Tg and Roh data were compared with their modeled counterparts using SciGlass and a newly developed DFT model, respectively. T2 - Annual meeting of the French Union for Science and Glass Technology (USTV) and the 96th Annual Meeting of the German Society of Glass Technology - USTV-DGG joint meeting. CY - Orléans, France DA - 22.05.2023 KW - Robot-assisted galss melting KW - Sodiumborosilicate glasses KW - Density KW - Glass transformation temperature KW - Property simulation PY - 2023 AN - OPUS4-58724 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilling, Richard A1 - Oehrl, A. A1 - Wischerhoff, E. A1 - Wosniok, Aleksander A1 - Schukar, Marcus T1 - Fiber-Optic Thermoresponsive Polymer-based Temperature Sensor for Process Monitoring N2 - We present a high-precision fiber-optic temperature sensor based on a polymer possessing a Lower Critical Solution Temperature (LCST) in aqueous solution encapsulated in a capillary. For a temperature higher than the LCST the transparent homogenous polymer solution changes into a suspension which forms an opaque fluid. The resulting temperature-dependent turbidity influences the transmission characteristics measured using a simple fiber-optic system. The presented development provides a small-sized, robust temperature sensor, patented by the BAM (patent nr.: EP 3 043 161 B1), easy to integrate in many application fields, especially for process monitoring. T2 - European Workshop on Optical Fibre Sensors (EWOFS 2023) CY - Mons, Belgium DA - 23.05.2023 KW - Thermoresponsive polymer KW - Aqueous polymer solution KW - Temperature sensor KW - LCST KW - POF PY - 2023 AN - OPUS4-57739 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Arendt, F. A1 - de Camargo, Andrea Simone Stucchi A1 - Chen, Y.-F. A1 - Gogula, S. A1 - Kilo, M. A1 - Waurischk, Tina T1 - GlasDigital N2 - Der aktuelle Stand des MateriaDigital Projektes GlasDigital wird vorgestellt. Hierbei wird allgemein die Problem- und Zielstellung präsentiert, als auch auf 2 separaten Postern die Ergebnisse. Diese beinhalten zum Einen die smarte Gestaltung der robotergestützten Glasschmelzanlage der BAM inkl. Analytik und zum Anderen die Digitalisierungsbestrebungen im Bereich Glas, d.h. ML-gestützte C-S-P-Simulation, Ontologie für den Werkstoff Glas, Digitaler Zwilling des Gießprozesses. T2 - PMD Vollversammlung 2023 CY - Karlsruhe, Germany DA - 21.09.2023 KW - GlasDigital KW - Ontologie KW - Bildanalyse KW - Simulation KW - Roboter KW - Digitalisierung PY - 2023 AN - OPUS4-58734 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stargardt, Patrick T1 - H2 permeability of soda-lime, borosilicate and vitreous silica glasses for potential high pressure H2 storage applications N2 - Modern high-pressure H2 tanks consist of fiber-reinforced composite materials and a plastic lining on the inside. The use of glass would drastically increase the H2 barrier effect. This could be achieved with glass liners or fiber-reinforced polymer-bonded glass capillary storage tanks and would enable lower wall thicknesses, higher gravimetric storage densities and variable designs and thus a much more effective use of space. However, the decisive material parameters for the development of these technologies, such as the hydrogen permeation, are unknown. This study focuses on H2 diffusion in glasses of different chemical compositions. H2 permeation is measured by mass spectrometry. For this purpose, the mass spectrometer (MS), which is located in a high vacuum, is separated from the pressure side by the test specimen. Pure H2 gas is present on the pressure side, so that the mass flow is recorded qualitatively and quantitatively in the MS. The permeation coefficients are calculated from the sample geometry and the mass flow rates. The very low H2 permeation of glass is measured on bundles of thin-walled commercially available glass capillaries and compared with the hydrogen permeation data of the glass powder method. T2 - Jahrestagung der Deutschen Glastechnischen Gesellschaft 2024 CY - Aachen, Germany DA - 27.05.2024 KW - Gas permeation KW - Hydrogen gas KW - High pressure gas storage PY - 2024 AN - OPUS4-60420 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eggert, Lara T1 - Möglichkeiten im Meerwasserlabor N2 - Das Meerwasserlabor am Eidersperrwerk wurde vorgestellt. Dabei lag der Fokus auf die elektrochemischen Versuchsmöglichkeiten, Monitoring von Versuchsparametern, atmosphärische Korrosion und der Bewuchs an getauchten Prüfkörpern. T2 - H2Mare-Verbundprojekttreffen PtX-Wind & TransferWind CY - Bremerhaven, Germany DA - 09.07.2025 KW - Meerwasserlabor KW - Maritime Korrosion PY - 2025 AN - OPUS4-63766 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Popiela, Bartosz T1 - FEM-Analyse der Reparaturstellen an FKV-Sandwichplatten N2 - Untersuchung des Einflusses des Reparaturpatches auf das Verhalten der reparierten GFK-Sandwichproben unter Zug-, Druck- und Schubbeanspruchung. T2 - 25. Nationales SAMPE-Symposium CY - Kassel, Germany DA - 18.02.2020 KW - Rotorblätter KW - Glasfaserverstärkter Kunststoff KW - Sandwichstruktur PY - 2020 AN - OPUS4-50544 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bernardy, Christopher A1 - Konert, Florian A1 - Popiela, Bartosz A1 - Sarif, Raduan T1 - H2Safety@BAM: Competence Center for safe hydrogen technologies N2 - Presentation of the competence center H2Safety@BAM at the European PhD Hydrogen Conference 2024 in Ghent, Belgium. T2 - European PhD Hydrogen Conference 2024 (EPHyC2024) CY - Ghent, Belgium DA - 20.03.2024 KW - H2safety KW - Hydrogen KW - Safety KW - Competence center PY - 2024 AN - OPUS4-59756 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Munzke, Dorit T1 - Zustandsüberwachung von Composite-Druckgefäßen mit faseroptischer Sensorik N2 - Funktionsweise, Integration und Messergebnisse von opt. Fasern zur Zustandsüberwachung von Composite-Druckgefäßen. T2 - 3. Workshop Themenfeld Material CY - Berlin, Germany DA - 12.10.2016 KW - Faseroptik KW - Zustandsüberwachung KW - Composite-Druckgefäße PY - 2016 AN - OPUS4-39097 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Waurischk, Tina T1 - New device for inert crack growth measurements in ultra-strong glasses N2 - The practical strength of glasses under ambient conditions is substantially lower compared to its intrinsic strength because of sub-critical crack growth (SCCG) from microscopic flaws. While SCCG is related to the humidity of the ambient atmosphere, leading to stress corrosion phenomena, the detailed kinetics are still not fully understood. To get better insight to the contribution of water on the crack-tip, highly water bearing glasses will be investigated by a new device for inert SCCG-measurements using double cantilever beam (DCB) geometry specimens. This device was designed to investigate the stress intensity factor in modus I and crack velocity in vacuum, but different atmospheres can also be introduced. For validation of the new device, first experiments were performed on microscope slides as well as on a soda-lime silicate and a borosilicate crown glass. The results achieved will be presented in comparison to the published results of Wiederhorn. T2 - 91. Glastechnische Tagung CY - Weimar, Germany DA - 29.05.2017 KW - Double cantilever beam KW - DCB KW - Crack intensity factor KW - Crack growth velocity KW - Glass PY - 2017 AN - OPUS4-40680 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Ralf T1 - High-temperature laser profilometry N2 - Advanced methods for 3D green density characterization like computed tomography and 3D FE sinter modeling can be utilized for increasing the reliability of sintered components. The experimental in situ observation of sintering, however, is currently restricted to silhouette methods, i.e. heating microscopy. For complex shaped samples, in situ shape screening during shrinkage would allow much better validation of 3D sinter simulation models. Further, by revealing temporary sinter warpage, 3D high-temperature shape screening allows to locate potential defects of complex sintered components. Against this background, BAM developed a testing device for in situ 3D high-temperature shape screening for ceramic and glass-ceramic tapes up to 1000°C [1-3]. Current work is focused on dropping this restriction in sample shape and temperature. The poster illustrates the current state of this work and possible applications of the method e.g. in detecting sinter warpage of metallized glass-ceramic LTCC tapes. T2 - SGT Centenary Conference, & ESG 2016 CY - Sheffield, UK DA - 04. 09. 2016 KW - Laser profilometry KW - 3D High-temperature shape screening KW - Sintering PY - 2016 AN - OPUS4-38320 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Welter, T. T1 - Glass structures with low helium and hydrogen permeability N2 - An efficient energy provision using fuel cells is linked to effecitve hydrogen storage capabilities. Because of its low intrinsic hydrogen permeability, glass has a huge potential in modern concepts of hydrogen storage. Previous studies on oxidic glasses showed an empirical connection between glass composition and gas permeation, which was mainly derived from the behavior of silica glass. In this study we focus on the relationship between topologic (free volume; network polymerization) and thermodynamic (configurational entropy) parameters. The comparison of three glasses within the meta (earth-) alkaline alumino silicate system to silica glass shows that an increase of the atomic packing factor (APF) does not necessarily decrease the permeability. Furthermore, the results suggest a connection between ΔCp at Tg and hydrogen permeability of the glass. All experiments were performed assuming that chemical hydrogen solubiltity in glass is negligible at temperatures well below the glass transition temperature. T2 - 91. Glastechnische Tagung CY - Weimar, Germany DA - 29.05.2017 KW - Hydrogen permeability KW - Glass composition KW - Atomic packing factor KW - Configurational entropy KW - Diffusion coefficient PY - 2017 AN - OPUS4-40488 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marzok, Ulrich T1 - 3D High-temperature laser profilometry during sintering N2 - Most crucial for components of complex shape or heterogeneous micro structure, precise control of sintering has decisive influence on dimensional accuracy, mechanical integrity and reliability of sintered components. In these cases, only in situ 3D high-temperature shape screening during shrinkage would allow revealing temporary sinter warpage and hereby caused potential defects. Against this background, nokra Optische Prüftechnik und Automation GmbH, HTM Reetz GmbH and BAM developed a testing device for in situ 3D shape screening for ceramic and glass-ceramic tapes up to 1000°C by means of high-temperature laser profilometry. The local repeatability of the sample-sensor distance (sample height profile) is 10 µm at 1000°C. Current work is focused on dropping these restrictions in sample shape and temperature. In a second testing device, currently being in development, samples up to 5 cm x 5 cm x 5 cm can be measured at temperatures up to 1500°C.The presentation illustrates the current state of this work and possible applications of the method. T2 - 92. DKG Jahrestagung CY - Berlin, Germany DA - 19. 03. 2017 KW - Laser profilometry KW - 3D High-temperatue shape screening KW - Sintering PY - 2017 AN - OPUS4-40449 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marzok, Ulrich T1 - Measurement of H2 permeability of glasses with VHE powder method N2 - The development of glassy hydrogen barriers requires the determination of low H2 permeabilities. Previous studies and numerical simulations have shown that the VHE powder method (vacuum hot extraction with mass spectrometric gas detection) is suitable for this purpose. The measured isothermal gas emission is fitted to a classical diffusion model for spherical particles from which the diffusion coefficient of the glass is calculated. The H2 permeability is determined by means of the solubility determined from the same measurement data. This presentation is referring to the optimization of the method regarding sample preparation and measurement data evaluation using suitable experimentally determined particle size distributions is reported. For quartz glass, it is shown that the accuracy of classical measuring methods is achieved with the VHE powder method. Furthermore, other examples of substantially gas-tighter glasses are given. T2 - 91. Glastechnische Tagung CY - Weimar, Germany DA - 29.05.2017 KW - Hydrogen permeation KW - Glass KW - Vacuum hot extraction KW - Powder method KW - Diffusion coefficient PY - 2017 AN - OPUS4-40441 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Waurischk, Tina T1 - New device for inert sub-critical crack growth: measurements in crystallized glasses N2 - Compared to its intrinsic strength, the practical strength of glasses is substantially lowered by microscopic flaws. Their sub critical growth from the surface is strongly affected by ambient humidity. A new device was designed to enable the observation of sub critical crack growth (SCCG) in vacuum and controlled atmosphere. It allows measurements in transparent and semi-transparent materials in double cantilever beam (DCB) geometry. The aim of the present work is to study the effect of crystals on crack growth. T2 - 12th International Symposium on Crystallization in Glasses and Liquids CY - Segovia, Spain DA - 10.09.2017 KW - Double cantilever beam KW - DCB KW - Crack intensity factor KW - Crack growth velocity KW - Glass KW - Glass ceramic PY - 2017 AN - OPUS4-41995 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Thoralf A1 - Rosemann, Paul T1 - Influence of the post-weld surface treatment on the corrosion resistance of duplex stainless steel 1.4062 N2 - The duplex stainless steel 1.4062 (X2CrNiN22-2) is used as alternative material to austenitic stainless steels in the construction industry. The corrosion resistance of welded seams is influenced by the base material, the weld filler material, the welding process and also by the final surface treatment. The scale layer next to the weld seam can be removed by grinding, pickling, electro-polishing or blasting depending on the requested corrosion resistance. Blasted surfaces are often used in the industrial practice due to the faster and cheaper manufacturing process compared to pickled or electro-polished surfaces. Furthermore blasting with corundum-grain is more effective than blasting with glass-beads which also lower the process costs. In recent years, stainless steel surfaces showed an unusually high susceptibility to pitting corrosion after grinding with corundum. For this reason, it is now also questioned critically whether the corrosion resistance is influenced by the applied blasting agent. This question was specifically investigated by comparing grinded, pickled, corundum-grain- and glass-bead-blasted welding seams. Results of the SEM analyses of the blasting agents and the blasted surfaces will be presented and correlated with the results of different corrosion tests (KorroPad-testing and pitting potentials). T2 - Eurocorr 2017 CY - Prague, Czech Republic DA - 03.09.2017 KW - Duplexstahl KW - Korrosion KW - Nichtrostender Stahl KW - Oberflächenbearbeitung KW - Schweißen KW - Strahlen PY - 2017 AN - OPUS4-41915 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kowarik, Stefan T1 - Neuartiger faseroptischer Temperatursensor basierend auf thermoresponsiven Polymeren N2 - Wir zeigen Resultate für einen faseroptischen Temperatursensor, der auf der temperaturabhängigen Eintrübung einer wässrigen Polymerlösung beruht. Da der Sensor auf dem Phasenübergang der spinodalen Entmischung bei fester Temepratur beruht, kann sich der Sensor selbst kalibrieren und daher für Anwendungen zur absoluten Temperaturmessung eingesetzt werden. T2 - Hybrid Sensor Net CY - Karlsruhe, Germany DA - 22.11.2017 KW - LCST PY - 2017 AN - OPUS4-43310 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kotaka, M. T1 - Unique growth behavior of ferroelastic beta’-Gd2(MoO4)3 crystals in glasses N2 - An understanding on crystallization behavior and kinetics in glasses is one of the important topics in the glass science and technology. Tsukada et al.1) found an extremely unique and curious phenomenon in the crystallization of multiferroic (ferroelectric and ferroelastic properties) ’-Gd2(MoO4)3 crystals in Gd2O3-MoO3-B2O3 glasses. That is, crystals formed in the crystallization break into small pieces with a triangle prism or pyramidal shape having a length of 50-150 um spontaneously during the crystallization in the inside of an electric furnace, not during the cooling in air after the crystallization. They proposed to call this phenomenon “self-powdering phenomenon”. To the best of our knowledge, such a self-powdering phenomenon has not been observed in the crystallization of any other glasses. To investigate this phenomenon is very important for the glass science and for the preparation of bulk crystallized glasses with ferroelastic crystals. In this work, the preparation of crystallized glasses keeping the original shape is challenged, and the mechanism of self-powdering phenomenon is proposed. Glasses with the compositions of 21Gd2O3-63MoO3-(16-x)B2O3-xTeO2 (mol%) (x=0, 2, 4, 8) such as 21Gd2O3-63MoO3-16B2O3 (GM16B) and 21Gd2O3-63MoO3-8B2O3-8TeO2 (GM8T8B) were prepared using a conventional melt quenching technique. The quenched glasses were heat-treated at some temperatures, and the crystalline phase present in the crystallized samples was identified by X-ray diffraction (XRD) analyses, and the morphology and birefringence of crystals formed were observed using a polarized optical microscope (POM). The densities of GM16B and GM8T8B glasses are 4.76 g/cm3 and 4.91 g/cam3, respectively, and these values are higher than the density of ’-Gd2(MoO4)3 crystal, 4.555 g/cm3. These differences in the density might induce the large stresses in the inside of crystals during the crystal growth. The crystallized glasses of GM16B with ’-Gd2(MoO4)3 crystals do not keep the original glass shape, showing self-powdering phenomenon (breaking into small pieces). However, the crystallized glasses of GM8T8B keep the original glass shape without indicating any self-powdering. It is proposed that the stress at the interface between the glassy phase and ’-Gd2(MoO4)3 crystalline phase might be reduced in GM8T8B glasses containing TeO2 with weak Te-O bonds. T2 - Crystallization 2017 CY - Segovia, Spain DA - 10.09.2017 KW - Glass KW - Crystallization KW - Self-powdering PY - 2017 AN - OPUS4-44403 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Ralf A1 - Körner, S. T1 - Dissolution and reprecipitation of silver in sintering silver-glass dispersions N2 - Electric contacts based on silver-glass dispersions are key components in optoelectronic microsystems and control modules for medical, information & communication and energy technology in our networked society. Driven by the complexity of modern production processes and ever shorter time-to-market requirements, the fast and specific development of tailored silver-glass dispersions has become a bottleneck of technology development. Nevertheless, the underlying mechanisms of silver dissolution, transport, and reprecipitation, and the resulting micro structure evolution during firing are poorly understood. The broad literature on the precipitation of colloidal silver particles and the related processes of silver dissolution and diffusion mostly refer to very small volume fractions of silver. Transferring these results to the sintering of glass-containing silver dispersions, is therefore highly questionable. In this case, silver dissolution, electrical contact between silver particles, transport and reprecipitation take place under special conditions. This includes short diffusion lengths (particle size < 10 μm), the presence of three-phase contacts silver - glass - sintering atmosphere, as well as silver reprecipitation at the sintering contacts as the driving force of silver transport. Here, a dynamic balance of the silver concentration can be expected to result from the ratio between silver dissolution and reprecipitation. The aim of the project is to gain basic insight into the mechanisms of dissolution, transport and reprecipitation of silver in sintering silver glass dispersions. In this context, the main focus is on gaining basic knowledge about the dissolution of metallic silver in low melting oxide glasses as the limiting factor of the sintering of silver-glass composites. In particular, we will strive to gain insight into the effect of the oxygen content of the sintering atmosphere, of the oxygen dissolved in the silver particles, of silver oxide on the surface of the silver powder, of the electric contact between the silver particles, as well as the basicity of the glass. Furthermore, we strive for insights into the silver mobility and the silver concentration that can be attained (silver solubility) in oxide glasses with a low melting point. Summing up all these aspects, a closed explanatory model for silver dissolution, transport and reprecipitation during the sintering of glass silver dispersions will be introduced. T2 - DFG Begutachtungskolloquium (PAK 949/1 und PAK 950/1) CY - Bonn, Germany DA - 07.03.2017 KW - Sintering KW - Silver KW - Glass KW - Solubility KW - Reprecipitation PY - 2017 AN - OPUS4-44228 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Ralf A1 - Behrens, H. A1 - Deubener, J. T1 - Impact of structure and relaxation on fatigue and micromechanical properties of oxide glasses: the role of volatiles and bonding state N2 - As subcritical crack growth (SCCG) can reduce tensile strength of glasses by many orders of magnitude, the potential for improvement of fatigue behaviour is most intriguing in developing ultra-strong glasses. An essential bottleneck is the basic understanding of the numerous interplaying pressure-, temperature- and water-affected relaxation phenomena at the crack tip and related toughening strategies. Therefore, the present project aims to advance the basic understanding of structural relaxation effects and local properties caused by increased water concentration and tensile stresses at the crack tip as they are a key for structural toughening designs to develop SCCG-free glasses and glass surfaces. Our first studies give clear evidence that glass structure and dynamics is strongly modified upon hydration of glasses. These changes are highly related to the nature of network formers but are affected as well by the counter ions (network modifier). Results of the 1st project part suggest that structural relaxation below glass transition temperature, i.e. overlapping of short-range (beta) and long-range (alpha) interactions can contribute to SCCG in water-free environments and that structurally dissolved water in the glasses can have decisive impact on this effect. In the 2nd project stage specific glasses compositions will be investigated to gain an improved understanding on the relation of sub-Tg relaxation and inert SCCG as well as to shed light to the related effects of dissolved water and its speciation. These glasses cover a broader range of different glass topologies and binding partners, whereby the coupling of alpha and beta relaxations is varied systematically by alkali-, alkaline earth ions and water species concentrations. Preparation of hydrous glasses (up to 8 wt% water) will be performed by high pressure syntheses. Structure will be resolved by NMR, Raman and IR spectroscopy while structural relaxation is accessed in the temperature and frequency domain using dynamic mechanical spectroscopy and ultrasonic damping. We will focus on measurements of inert SCCG (region III) conducting experiments in vacuum and dry gas atmospheres using indentation techniques and stressing of glass specimens in DCB geometry. Experimental data on SCCG will be provided to SPP groups, which deals with fatigue in metallic glasses and vice versa we will test theoretical predictions of ab-initio simulations of partner within SPP 1594 in order to quantify the effect of water on the crack tip. In summa topological factors controlling the subcritical crack growth with respect to water will be identified from which structural toughening designs for highly fatigue resistant-glasses can be derived. N2 - Subkritisches Risswachstum (SCCG) kann die Zugfestigkeit von Glas um viele Größenordnungen erniedrigen. Deshalb birgt die Verbesserung des Ermüdungsverhaltens ein hohes Potential für das topologische Design hochfester Gläser. Ein diesbezüglicher Engpass ist das Verständnis der zahlreichen interagierenden druck-, temperatur- und wasserbeeinflussten Relaxationsphänomene an der Rissspitze und hieraus abgeleitete Verstärkungsstrategien. Ziel des Projekts ist es daher, das grundlegende Verständnis der Effekte, die infolge erhöhter Wasserkonzentrationen und Zugspannungen an der Rissspitze entstehen, zu vertiefen, da sie als ein Schlüssel für künftige strukturelle Designprinzipien zur Entwicklung schadenstoleranter Gläser und Glasoberflächen gelten. Unsere ersten Studien zeigen, dass die Struktur und Dynamik von Gläsern nach einer Hydration stark verändert sind. Diese Modifikationen sind mit der Art der Netzwerkbildner stark verknüpft, aber auch von ihren Gegenionen (Netzwerkwandler) abhängig. Die Ergebnisse des ersten Projektabschnitts legen nahe, dass strukturelle Relaxation unterhalb der Glasübergangstemperatur, d. h. ein Überlappen von kurz-reichweitigen (beta) und lang-reichweitigen (alpha) Wechselwirkungen, zum subkritisches Risswachstum in wasserfreien Umgebungen beitragen kann und, dass strukturell gelöstes Wasser in Gläsern sich entscheidend auf diese Effekt auswirken kann. Im zweiten Projektabschnitt werden daher spezielle Glaszusammensetzungen untersucht, die zu einem besseren Verständnis der Verbindung zwischen sub-Tg Relaxation und SCCG führen aber auch den Einfluss von gelöstem Wasser und dessen Speziation näher beleuchten. Diese Gläser weisen eine großen Breite an verschiedenen Topologien und Bindungspartnern auf, wobei die Kopplung von alpha und beta Relaxation durch Veränderungen in den Gehalten von Alkali-, Erdalkalionen und der Wasserspezies systematisch variiert wird. Die Präparation hydratisierter Gläser (bis zu 8 Ma.%) erfolgt mittels Hochdrucksynthesen. Die Glasstruktur wird durch NMR, Raman und IR Spektroskopie aufgeklärt während die Strukturrelaxation anhand dynamische mechanische Spektroskopie und Ultraschalldämpfung im Temperatur- und Frequenzraum erfasst wird. Im Fokus werden Messungen des inerten subkritischen Risswachstums (Region III) stehen, die Indenter-Experimente im Vakuum und trockenen Gasatmosphären sowie Verspannen von Glasproben in DCB Geometrie beinhalten. Experimentelle SCCG Daten werden Gruppen im Schwerpunktprogramm zur Verfügung stellen, die sich mit Ermüdung in metallischen Gläsern beschäftigen und im Gegenzug werden wir theoretische Vorhersagen aus ab initio Simulationen der Partner im SPP 1594 testen, um den Einfluss von Wasser auf die mechanischen Eigenschaften an der Rissspitze und deren Einfluss auf SCCG zu quantifizieren. In summa werden topologische Faktoren bezüglich Wasser, die SCCG kontrollieren, identifiziert, um daraus Designprinzipien für hoch ermüdungsresistente Gläser abzuleiten. T2 - Kolloquium des DFG-PP 1594 CY - Jena, Germany DA - 17.9.2015 KW - Glass KW - Fatigue PY - 2015 AN - OPUS4-38334 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blaeß, Carsten T1 - Crack healing in glass matrix composites N2 - Partially crystalline glasses are predominantly used as solid oxide fuel cell (SOFC) sealants due to their superior long term durability. However, cracks caused by thermal cycling still remain a substantial bottleneck in developing durable SOFC sealants inasmuch as, in contrast to crystal free glasses, large crystal volume fractions can retard healing. Hence, the basic understanding of crack healing in glassy crystalline materials and the effects of micro structure are important for finding optimum micro structures for both, durability and crack healing. For studying these effects, several model glass matrix composites (GMC), for which simultaneous crystal growth and crack healing can be excluded, have been synthesized. Sodium calcium silicate glass – zirconia GMC turned out to provide sufficiently homogeneous, dense and durable model GMC for our studies. The microstructure of this GMC shows large crystal free glassy regions embedded in network of finely dispersed ZrO2 nanoscale crystals. Whereas the glassy regions allow easy local crack healing, the network of dispersed crystals increases the effective viscosity on a global scale. This effect substantially retards crack broadening during later healing stages, which often ends up in large pores. Therefore, this type of microstructure seems to be an interesting candidate for crack healing optimized sealants. T2 - 91. Jahrestagung HVG-DGG CY - Weimar, Germany DA - 29.05.2017 KW - Glass KW - Crack healing KW - Glass ceramic KW - Composite PY - 2017 AN - OPUS4-41348 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blaeß, Carsten T1 - Crack healing in glasses N2 - Fundamental understanding of crack healing in glassy crystalline materials is very important for many applications, especially for solid oxide fuel cells (SOFC) sealants since cracks caused by mechanical stress or thermal cycling still remain a substantial bottleneck in developing durable SOFC. Previous studies on soda lime silicate glass published by Singh showed that crack healing is driven by viscous flow. There he postulated that the healing progress is proportional to time, t, and the inverse viscosity. This finding would allow to present for a given glass data of crack healing measured at different temperatures in a master curve, if the healing progress is plotted versus t/η. Such master curves would be a helpful tool in understanding crack healing kinetics. To verify the applicability of such master curves, crack healing in non-crystallizing soda-lime-silicate (NCS) and sodium-borosilicate glasses (NBS) was studied. Cracks were generated by Vickers indention and healed isothermally at different temperatures. Crack healing progress was monitored by optical and electron microscopy. The results show that the above mentioned proportionalities applies to the two glasses. In both cases the afore developed master curve could be obtained. T2 - 91. Jahrestagung HVG-DGG CY - Weimar, Germany DA - 29.05.2017 KW - Glass KW - Crack healing PY - 2017 AN - OPUS4-41347 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blaeß, Carsten T1 - Crack healing in glass matrix composites N2 - Partially crystalline glasses are predominantly used as solid oxide fuel cell (SOFC) sealants due to their superior long term durability. However, cracks caused by thermal cycling still remain a substantial bottleneck in developing durable SOFC sealants inasmuch as, in contrast to crystal free glasses, large crystal volume fractions can retard healing. Hence, the basic understanding of crack healing in glassy crystalline materials and the effects of micro structure are important for finding optimum micro structures for both, durability and crack healing. For studying these effects, several model glass matrix composites (GMC), for which simultaneous crystal growth and crack healing can be excluded, have been synthesized. Sodium calcium silicate glass – zirconia GMC turned out to provide sufficiently homogeneous, dense and durable model GMC for our studies. The microstructure of this GMC shows large crystal free glassy regions embedded in network of finely dispersed ZrO2 nanoscale crystals. Whereas the glassy regions allow easy local crack healing, the network of dispersed crystals increases the effective viscosity on a global scale. This effect substantially retards crack broadening during later healing stages, which often ends up in large pores. Therefore, this type of microstructure seems to be an interesting candidate for crack healing optimized sealants. T2 - Crystallization 2017 CY - Segovia, Spain DA - 10.09.2017 KW - Glass KW - Glass ceramic KW - Crack healing KW - Microstructure PY - 2017 AN - OPUS4-42291 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blaeß, Carsten T1 - Master curve for crack healing in silicate glasses N2 - Fundamental understanding of crack healing in glassy crystalline materials is very important for many applications, especially for solid oxide fuel cells (SOFC) sealants since cracks caused by mechanical stress or thermal cycling still remain a substantial bottleneck in developing durable SOFC. Previous studies on soda lime silicate glass published by Singh showed that crack healing is driven by viscous flow. He postulated that the healing progress is proportional to time, t, and the inverse viscosity. For a given glass, this finding would allow to present data of crack healing measured at different temperatures in a master curve, if the healing progress is plotted versus t/. Such master curves would be a helpful tool in understanding crack healing kinetics. To verify the applicability of such master curves, crack healing in non-crystallizing soda-lime-silicate (NCS) and sodium-borosilicate glasses (NBS) was studied. Cracks were generated by Vickers indention and healed isothermally at different temperatures. Crack healing progress was monitored by optical and electron microscopy. The results show that the above mentioned proportionality applies to the two glasses and the afore developed master curve could be obtained in both cases. T2 - Crystallization 2017 CY - Segovia, Spain DA - 10.09.2017 KW - Glass KW - Crack healing KW - Vickers PY - 2017 AN - OPUS4-42293 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stajanca, Pavol T1 - Response of microstructured plastic optical fiber Bragg grating to gamma radiation N2 - Response of PMMA-based plastic optical fiber Bragg grating (FBG) to gamma radiation is investigated for the first time. FBG wavelength shift as large as 250 pm is observed for irradiation to 20 kGy. T2 - 5th Workshop on specialty optical fibers and their applications (WSOF2017) CY - Limassol, Cyprus DA - 11.10.2017 KW - Fiber Bragg gratings KW - Optical sensing and sensors KW - Plastic optical fibers KW - Gamma radiation PY - 2017 AN - OPUS4-42585 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Waurischk, Tina T1 - Sub-critical crack growth in silicate glass N2 - Premature failure of glass under load is caused by sub-critical crack growth (SCCG) originate from microscopic flaws at the surface. While SCCG is related to the humidity of the ambient atmosphere, leading to stress corrosion phenomena at the crack tip, the detailed mechanism and the effect of different network formers are still not fully understood. For more clarity, various soda silicate glasses with a second network former were investigated by double cantilever beam technique: Na2O*Al2O3*SiO2 (NAS), Na2O*B2O3*SiO2 (NBS), Na2O*PbO*SiO2 (NPbS). Three effects on the crack growth velocity, v, versus stress intensity, KI, curves were found out. The slope in region I, which is limited by corrosion, increases in the order NAS < NBS ≲ NPbS. The velocity range of region II reflecting the transition between corrosion effected and inert crack growth (region III), varies within one order of magnitude between the glasses. The KI region of inert crack growth strongly scatters between 0.4 and 0.9 MPam1/2. For comparison, crack growth at different humidity in commercial soda lime silicate glass (NCS) was measured. T2 - 92nd Annual Meeting of the German Society of Glass Technology in Conjunction with the Annual Meetings of the Czech Glass Society & the Slovak Glass Society CY - Bayreuth, Germany DA - 28.05.2018 KW - Risswachstum KW - DCB KW - Glas PY - 2018 AN - OPUS4-45702 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kiefer, P. T1 - Subcritical crack growth in water bearing soda-lime silicate glasses N2 - The presence of water in the surrounding atmosphere of a propagating crack has a major influence on the subcritical crack growth. While these external phenomena are well understood, there is still a lack of knowledge on the influence of structurally bound water on crack propagation. Thus, our recent study aims on the analysis of crack propagation in water bearing soda-lime silicate glasses with up to 8 wt.% water. The samples were synthesized in an internally heated pressure vessel at 0.5 GPa. Since this preparation route limits the sample sizes, standard test geometries allowing for the determination of stress intensity factors, such as double cantilever beam, are not feasible. Thus, radial cracks in the hydrous glasses were initiated by Vickers indentation and crack growth was simultaneously captured with a camera system. An automated image analysis algorithm was used for the analysis of the crack length of each single video frame. To minimize influences by atmospheric water, all experiments were conducted in a glovebox purged with dry N2. About 150 cracks per glass composition were analyzed to provide statistical significance of the Vickers-induced SCCG. The results show that structurally bound water has a major influence on SCCG by means of crack lengths, growth rates and time of crack initiation. T2 - 92nd Annual Meeting of the German Society of Glass Technology in Conjunction with the Annual Meetings of the Czech Glass Society & the Slovak Glass Society CY - Bayreuth, Germany DA - 28.05.2018 KW - Water speciation KW - Soda-lime silicate glass KW - Crack growth KW - Vickers PY - 2018 AN - OPUS4-45704 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Welter, T. T1 - Glass structures with low H2-diffusity N2 - Effective hydrogen storage capacities are prerequisite for an efficient energy provision using fuel cells. Since glass has low intrinsic hydrogen permeability, it is a promising material for hydrogen storage containers as well as hydrogen diffusion barriers. Previous studies on oxidic glasses suggest a correlation between the glass composition and hydrogen permeation that was derived mainly from silica glass. In the present study, we concentrate on the relationship between thermodynamic (i.e., configurational entropy) and topologic (i.e., free volume, network polymerization) parameters. Experimental data were gathered well below the glass transition temperature, excluding significant effects caused by structural relaxation and chemical dissolution of hydrogen. The results of seven analysed glasses on the SiO2-NaAlO2 joint showed that the hydrogen permeability in fully polymerized glasses cannot solely be derived from the total free volume of the glass structure. Hence, evidence is provided that the size distribution of free volume contributes to hydrogen solubility and diffusion. Additionally, the results indicate that the configurational heat capacity ΔCp at Tg affects the hydrogen permeability of the investigated glasses. T2 - 92. Glastechnische Tagung der DGG CY - Bayreuth, Germany DA - 28.05.2018 KW - Hydrogen permeability KW - Atomic packing factor KW - Glass composition KW - Diffusion coefficient PY - 2018 AN - OPUS4-45900 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hofmann, Detlef A1 - Basedau, Frank A1 - Pötschke, Samuel A1 - Breithaupt, Mathias T1 - Funktionsprinzip faseroptischer Sensoren N2 - Das Poster präsentiert die Grundlagen zur Funktionsweise optischer Fasern bzw. faseroptischer Sensoren, die im Rahmen eines Feldversuchs zum Einsatz kommen. T2 - Tag der offenen Tür auf dem Testgelände der BAM (BAM TTS) CY - Horstwalde, Germany DA - 29.09.2018 KW - Faseroptische Sensorik KW - Verteilte Messverfahren KW - Quasi-verteilte Messverfahren PY - 2018 AN - OPUS4-46333 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Thoralf T1 - KorroPad - New Test Method for the Investigation of the Passive Layer Stability of Stainless Steels N2 - The KorroPad is a gel-based indicator test designed for the electrochemical determination of the passive layer stability and localization of surfaces of stainless steels threatened by localized corrosion. Different investigations and studies on the performance of the KorroPad as well as field trials by industrial users the have proven the principal suitability of the KorroPad method to assess the passive layer stability of stainless steels. The electrochemical mode of action will be described in detail and also the limitations of the applicability will be demonstrated. The influence of different surface finishes has been investigated and verified by known methods for describing corrosion resistances. As a result, the increased corrosion susceptibility of two ground surfaces has been detected, but also the corrosion resistance of further surface finishes could be confirmed. Furthermore the KorroPad test was used for the investigation of the influence of time and humidity on the passive layer development on different stainless steels. T2 - EuroCorr 2018 CY - Krakow, Poland DA - 09.09.2018 KW - Corrosion KW - KorroPad KW - Stainless Steel KW - Passivity KW - Surface finish PY - 2018 AN - OPUS4-46022 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Waurischk, Tina T1 - Internal friction and energy dissipation during crack propagation in silicate glasses N2 - To obtain a deeper insight into the nature of energy dissipation during crack propagation, the internal friction of 13 borosilicate, aluminosilicate, soda-lime, and lead-containing glasses, for which inert crack growth data are available in the literature, was measured using dynamic mechanical thermal analysis. For asymmetrically bent glass beams, the loss tangent tanδ was determined between 0.2 and 50 Hz at temperatures between 273 K and the glass transition temperature Tg. It was found that the area under the tanδ vs. T/Tg curve correlates with the crack growth exponent, n, in the empirical v ~ KIn relation between crack growth velocity, v, and stress intensity, KI. This correlation was most distinct for T/Tg < 0.3, still clear for T/Tg < 0.5, but not found for T/Tg > 0.8. The observed results indicate that n correlates with the degree of energy dissipation of relaxation phenomena below Tg. T2 - 27th International Congress on Glass 2025 CY - Kolkata, India DA - 20.01.2025 KW - Internal friction KW - Energy dissipation KW - Crack propagation KW - Silicate glasses PY - 2025 AN - OPUS4-63819 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Agasty, Amit T1 - Numerical simulations and field validation tests for shock waves’ propagation N2 - At the BAM test range in Horstwalde a number of field trials were conducted with a HE to investigate the free field propagation of shock waves and that resulting from reflection at structure surfaces. In addition, the behavior of the structure under the effect of the dynamic pressure waves after explosion was studied. For both the tests, (a) with a 30 cm thick reinforced-concrete wall and (b) in free field, pressure was measured over the entire test duration with piezoelectric sensors at distances of 5, 10 and 15 m from the detonation center for a range of HE quantities. Apart from this, high speed footage of the tests was recorded as well. Corresponding to the field tests, numerical simulations of HE detonation were performed using APOLLO BLASTSIMULATOR, a CFD tool developed by Fraunhofer Institute for High-Speed Dynamics, Ernst-Mach-Institute. The accuracy of the simulation results as well as the computing times depend on the spatial grid resolution. The outputs of grid-independence study demonstrated that the peak pressure is higher and the pressure-rise is steeper for simulation runs with a finer grid. Remarkably however, the exponential pressure decline is independent of the grid resolution. Advantage was taken of this feature to obtain improved peak pressure values from comparatively coarser grids, in that curve-fitting was performed using the Friedlander Equation, which is well documented in literature. The simulation results for pressure-time histories were compared with the field-test results at the corresponding measurement positions. The two data sets showed good correlation in case of scaled distances greater than 5 [m/kg1/3] for both peak pressure and impulse values. This conclusion could be drawn for both trial-types: free-field and with reflection wall. The near field region, on the other hand, necessitates further investigation for the validation of numerical simulation. T2 - New Trends in Research of Energetic Materials CY - Pardubice, Czech Republic DA - 18.04.2018 KW - Numerical simulation KW - Field-tests KW - Shock waves KW - Friedlander curve PY - 2018 AN - OPUS4-46301 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kemmler, Samuel T1 - Fully-resolved LBM-DEM simulations of piping erosion during a suction bucket installation N2 - Suction bucket foundations are a cost-efficient and environmentally sustainable solution to install offshore wind turbines, achieved through the application of growing suction pressure inside the bucket until its full embedment into the seabed. A key challenge for the installation process is the occurrence of piping erosion, a phenomenon where fluidization of particles beneath the bucket wall tip causes a drop in suction pressure, potentially leading to installation failure. Despite its significance, the complex physical mechanisms driving piping erosion remain insufficiently understood. To address this knowledge gap, a three-dimensional, fully-resolved coupled LBM-DEM simulation is employed to conduct an in-depth analysis of piping erosion, aiming to identify key influencing parameters, thus enhancing understanding and optimizing the installation process. The simulation of physically relevant problem sizes - comprising hundreds of thousands of grains - is equivalent to computational intensities which demand for extensive computational resources. Results from simulations executed on hundreds of GPUs on the LUMI supercomputer are presented, illustrating the method's capability to tackle this complex challenge. T2 - 10th International Conference on Discrete Element Methods CY - Himeji, Japan DA - 01.07.2025 KW - Offshore wind support structure KW - Suction bucket foundation KW - Piping erosion KW - Micromechanical simulation PY - 2025 AN - OPUS4-63691 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tielemann, Christopher T1 - First hints on reorientation of surface crystals N2 - Up to now, the mechanisms of surface nucleation and surface-induced texture formation are far from being understood. Very few observations of crystal orientation were focused on separately growing surface crystals. In conclusion, no systematic studies on initially oriented crystal growth or nucleation from defined active surface nucleation sites exists. Therefore, the main objective of this just is to advance the basic understanding of the mechanisms of surface-induced microstructure formation in glass ceramics. As a first attempt, we focus on reorientation of separately growing surface crystals during their early growth. T2 - 92nd Annual Meeting of the German Society of Glass Technology in Conjunction with the Annual Meetings of the Czech Glass Society & the Slovak Glass Society CY - Bayreuth, Germany DA - 28. Mai 2018 KW - Glass KW - Crystallization KW - BCS PY - 2018 AN - OPUS4-47536 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Interlaboratory test of hydraualic cycling facilities T2 - StrHy-Jahrestreffen, BAM CY - Berlin, Germany DA - 2007-02-26 PY - 2007 AN - OPUS4-14508 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Hydraulic bursting facility of BAM T2 - StorHy-Jahrestreffen, BAM CY - Berlin, Germany DA - 2007-02-26 PY - 2007 AN - OPUS4-14505 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - 7 Verschiedene Poster: 1. SPA SAR General Overview; 2. Evaluation of Composite Cylinders Using Acoustic Emission; 3. Benchmarking of Hydraulic Cycling Facilities by Interlaboratory Tests; 4. Analytical Stress Simulation in Habrid Cylinders; 5. Modular Fire Engulfment Test; 6. Crash Related Strength of Hydrogen Containments; 7. An alternative Approval Approach - Probabilistic Assessment of Containments T2 - 5th Annual Meeting 2008 Poster session on the results of StorHy CY - Paris, France DA - 2008-06-04 PY - 2008 AN - OPUS4-17572 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Safety in Hydrogen Supply - Sicherheit in der Wasserstoff-Versorgung N2 - This poster shows some aspects concerning how BAM contributes to safety in transport and acceptance of hydrogen as energy carrier. T2 - Evaluierung der BAM durch den Wissenschaftsrat CY - BAM, Berlin, Germany DA - 16.02.2016 KW - Safety assessment KW - Probabilistic approach KW - Efficiency in transportation PY - 2016 AN - OPUS4-39146 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böhning, Martin T1 - Dielectric and gas transport properties of polypropylene-clay nanocomposites T2 - DPG-Frühjahrstagung (Polymerphysik), Fachverband CPP, Themenkreis 3 CY - Regensburg, Germany DA - 2002-03-11 PY - 2002 AN - OPUS4-3623 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wohlrab, Sebastian T1 - Polymer based nanocomposites with Phenethyl POSS as nanofiller investigated by dielectric spectroscopy and gas transport measurements T2 - 70th PMM - 46th Microsymposium, Nanostructured Polymers and Polymer Nanocomposites CY - Prague, Czech Republic DA - 2007-07-08 PY - 2007 AN - OPUS4-15067 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Gas transport properties of polymeric nanocomposites based on polyhedral oligomeric silsesquioxanes T2 - Meeting America Chemical Society CY - Boston, MA, USA DA - 2007-07-19 PY - 2007 AN - OPUS4-15354 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hölck, Ole T1 - Gas induced structural changes in glassy polymers - relating experimental and modeling results T2 - Polydays 2006 CY - Berlin, Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-14074 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Polycarbonate/SiC Nanocomposites - Influence of Nanoparticle Dispersion on Molecular Mobility and Gas Transport T2 - 7th International Symposium Polymers for Advanced Technologies CY - Fort Lauderdale, FL, USA DA - 2003-09-21 PY - 2003 AN - OPUS4-4650 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schönhals, Andreas T1 - Polycarbonate/SiC Nanocomposites - Influence of Nanoparticle Dispersion on Molecular mobility and Gas Transport T2 - 7th International Symposium Polymers for Advanced Technologies CY - Fort Lauderdale, FL, USA DA - 2003-09-21 PY - 2003 AN - OPUS4-4665 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mach, Reinhard T1 - Molecular mobility and Gas Transport Properties of Polycarbonate-based Nanocomposites T2 - International Conference Nanomaterials und Nanotechnologies (NN 2003) CY - Crete, Greece DA - 2003-08-30 PY - 2003 AN - OPUS4-4664 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mach, Reinhard T1 - Molecular mobility and Gas Transport Properties of Polycarbonate-based Nanocomposites T2 - Nanomaterials und Nanotechnologies (NN 2003) CY - Crete, Greece DA - 2003-08-03 PY - 2003 AN - OPUS4-4644 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hölck, Ole T1 - Gas Induced Dilation of Glassy Polymeric Systems - Experimental Evaluation and Molecular Dynamics Simulations T2 - Polydays 2004, Universität Potsdam CY - Potsdam, Germany DA - 2004-10-04 PY - 2004 AN - OPUS4-4353 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hao, Ning T1 - Investigation of the molecular mobility and gas transport properties of polymer/POSS hybrid materials T2 - Frühjahrstagung der Deutschen Physikalischen Ges. / AKF, Condensed Matter CY - Dresden, Germany DA - 2006-03-26 PY - 2006 AN - OPUS4-11369 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hölck, Ole T1 - Gas induced dilation in glassy polymers - combining experiment, phenomenological models and simulation T2 - Frühjahrstagung der Deutschen Physikalischen Ges. / AKF, Condensed Matter CY - Dresden, Germany DA - 2006-03-26 PY - 2006 AN - OPUS4-11317 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Simone T1 - Thermo oxidative investigations on efficiency of UV stabiliser in automotive coatings T2 - Polydays 2006 CY - Berlin, Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-13448 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Retzlaff, J. T1 - Untersuchungen zur Oxidationsbeständigkeit von Geokunststoffen T2 - Fachtagung der Kompetenzplattformen "Life Cycle Assessment (LCA) neuer Kunststoffe der FH Münster und "Polymere Materialien" der FH Aachen CY - Münster, Germany DA - 2010-02-25 PY - 2010 AN - OPUS4-21012 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sadeghi, Mohammad T1 - Dielectric investigation of Nanocomposites based on Polystyrene and Polyhedral Oligomeric Silsesquioxanes T2 - DPG Frühjahrstagung 2012 CY - Berlin, Germany DA - 2012-03-26 PY - 2012 AN - OPUS4-25763 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böhning, Martin T1 - Characterization of structural changes in irradiated UHMWPE T2 - 11. Schwarzheider Kunststoffkolloquium CY - Schwarzheide, Germany DA - 2011-09-21 PY - 2011 AN - OPUS4-24423 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Konnertz, Nora T1 - QCM System for the Characterization of Gas Sorption and Physical Aging on Membrane Polymers and Nanocomposites for Gas Separation Applications T2 - 79. Jahrestagung der DPG und DPG-Frühjahrstagung CY - Berlin DA - 2015-03-15 PY - 2015 AN - OPUS4-32887 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erdmann, Maren T1 - Effect of surface degradation on high-density polyethylene for biofilm formation N2 - Renewable resources become more and more relevant to maintain energy demands for an increasing global population. Biosynthetic fuels like biodiesel might replace conventional petrochemical fuels. In this study the influence of microbial growth on biodiesel and diesel on the storage tank systems were investigated. Polymeric fuel storage tanks for diesel and biodiesel provide suitable environmental conditions for a broad spectrum of fungi and various bacteria, including cyanobacteria and aerobic heterotrophic, and even anaerobic, fermentative Bacteria. However, the questions whether and how ageing of the materials is affected by biofouling processes have not been answered so far. Therefore, a model system for biofilm formation was established to study the initial attachment phase of bacteria in dependency of ageing, quality and surface modification of thermoplastic polymers used for storage tank systems. The microbial survey is closely connected with a detailed characterization of the material’s properties and its ageing processes. A widely applied plastic used for fuel storage tanks is high-density polyethylene (PE-HD), which is available with various additives to increase UV-light stability and even for the storage of biodiesel. These materials were aged under UV-light and temperature using a defined climate chamber set-up. Further, the repeated filling of fuels was mimicked for such storage tanks, as this has an important impact on the life-cycle length for the storage Container. The aged polymers showed a significant change in the material’s characteristics, including surface characteristics (e.g. hydrophobicity) and carbonyl groups. The effect of the changed material properties on the biofilm formation are studied using bacterial isolates, previously obtained from a “dieselpest”, and as a model-reference E. coli. The unaged polymers showed already some significant differences for the initial attachment of E. coli K12. Polyethylene with additives was colonized faster than the reference material (without additives) although the final biofilm coverage was not impaired. Likewise, the settlement of a kerosene-isolated Bacillus species on the unaged materials independently of additives was only minor interfered. In future, our results should give stakeholders in industry and public authorities a better estimation of the life-cycle security for fuel storage tank systems and on the fuel quality. Further, our results could help to test and develop new materials or additives to prevent biofouling processes. T2 - VAAM Jahrestagung CY - Würzburg, Germany DA - 05.03.2017 KW - PE-HD KW - Biofilm KW - MIC KW - Degradation PY - 2017 AN - OPUS4-39457 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Konnertz, Nora T1 - Enhanced gas separation performance of nanocomposites based on a polymer with intrinsic microporosity PIM-1 and phenethyl-POSS N2 - In times of the energy revolution, the need for energy efficient separation processes promotes the advancement of new high performance materials for use as highly selective separation membranes. Most promising materials in this field, especially for gas separation, are polymers with intrinsic microporosity (PIMs) which were firstly introduced by Budd and McKeown. In this study the permeability of PIM-1 was increased by 439 % by formation of nanocomposites with only 1 wt% of polyhedral oligomeric phenethyl-silsesquioxane (PhE-POSS) within the polymer matrix. As the CO2/CH4 selectivity is fully retained, this leads to a shift in the Robeson plot towards the upper bound. The Robeson plot describes the current state of the art trade-off relation between selectivity and permeability of all known membrane polymers. As molecular mobility is a key factor for gas transport as well as the often observed physical aging of such polymers, our study also includes for the first time, molecular dynamics and conductivity of pure PIM-1 and PIM-1 nanocomposites as investigated by broadband dielectric spectroscopy (BDS). T2 - Polydays 2016 CY - Potsdam, Germany DA - 28.09.2016 KW - PIM-1 KW - POSS KW - Broadband dielectric spectroscopy KW - Permeation PY - 2016 AN - OPUS4-37701 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rolle, Annette T1 - Qualification Procedure for Seal Designs for Spent Fuel Transport and Storage Cask Containments N2 - The seal is a key component of the containment and closure system of transport and storage casks for radioactive material. It is a major contributor to ensuring compliance with the acceptable limits for activity release according to IAEA regulations. The requirements for a safe seal performance are high, accordingly. Every new seal design intended for use in the containment of a transport cask for radioactive material passes a qualification process in Germany. The qualification process is supervised by BAM as German competent authority for mechanical, thermal and containment assessment of packages requiring design approval. The closure system including the seal shall be able to withstand the corrosive, mechanical and thermal loads associated with routine, normal and accident conditions of transport according to the IAEA regulations without losing the required sealing function. Metal seals of the Helicoflex® type are often used to ensure required package leak tightness for both storage and transport, including transport after long term interim storage. The poster will provide an overview of requirements during a seal qualification process on the example of a Helicoflex® type metal seal. T2 - 21stInternational Symposium on the Packaging and Transportation of Radioactive Materials, PATRAM 2025 CY - San Antonio, Texas , US DA - 27.07.2025 KW - Spent fuel transport KW - Seals KW - Raqdioactive KW - Containment PY - 2025 AN - OPUS4-63909 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Algernon, Daniel T1 - Anwendung der Hilbert-Huang-Transformation zur Auswertung von Impact-Echo-Datensätzen T2 - Jahrestagung der Deutschen Gesellschaft für Zerstörungsfreie Prüfung (DGZfP) 2005 CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-11413 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Algernon, Daniel T1 - Identification of short transient signals within impact-echo data using the Hilbert Huang transform T2 - IIIrd Workshop of "NDT in Progress" CY - Prague, Czech Republic DA - 2005-10-10 PY - 2005 AN - OPUS4-11414 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Streicher, Doreen T1 - Zerstörungsfreie Zustandsuntersuchungen an Spannbetonbrücken unter Verkehr T2 - Bauwerksdiagnose 2006 CY - Berlin, Germany DA - 2006-02-23 PY - 2006 AN - OPUS4-12142 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Algernon, Daniel T1 - A new approach for the investigation of geometry effects in impact-echo measurements - experimental results and numerical simulations T2 - ECNDT Berlin 2006, 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-14073 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grandel, Jonas T1 - Fine-tuning universal interatomic potentials for phonon properties without catastrophic forgetting N2 - Accurate phonon predictions are essential for evaluating material stability and thermal behavior. Traditional DFT-based methods are computationally intensive, driving interest in faster, machine-learning-based alternatives. In this work, we fine-tune the machine learning interatomic potential MACE-MP-0b3 (https://arxiv.org/abs/2401.00096) to improve the prediction of harmonic phonons and thermal properties. A key challenge is the need for highly accurate force calculations. While fine-tuning can enhance phonon accuracy, it may reduce generalizability to other properties. Despite this, our study shows that fine-tuned models can accurately predict phonon properties (including renormalization of imaginary phonons) at the same time as volume-dependent properties like the bulk modulus. We fine-tune the base model using small sets of rattled structures and introduce a novel fine-tuning method, benchmarking it against existing techniques. These results suggest that refined MACE-based universal potentials are a promising path for efficient and accurate phonon modeling. All implementations are included in the equitrain training code (https://github.com/BAMeScience/equitrain). T2 - Psi-k Konferenz CY - Lausanne, France DA - 25.08.2025 KW - Machine Learning KW - MACE KW - Phonon KW - Thermal properites PY - 2025 AN - OPUS4-64010 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Walterbos, Luc T1 - Double trouble: exploring the chemical landscape of halide double perovskites N2 - Halide Double Perovskites (HDPs) are an emerging class of materials with chemical formula A2BB’X6 with possible applications in photovoltaics, X-ray detection, sensing, photocatalysis and spintronics.. However, with more than 40,000 potential HDP compositions, much of the chemical landscape remains unexplored. We have generated a database of spin-polarized, hybrid functional (HSE06) electronic structure data of all HPDs with A=Cs that are predicted to be stable based on a tolerance-factor analysis. Our high-throughput workflow also consists or a chemical bonding and orbital projection analysis based on LOBSTER (ww.cohp.de), leading to a comprehensivedatabase of electronic, magnetic and chemical bonding properties of >2700 HDP compositions, which can serve as a starting point for material design and discovery via interpretable machine learning techniques, which we use to identify unexpected trends and relations in the chemical landscape. T2 - Psi-k 2025 CY - Lausanne, Swiss DA - 25.08.2025 KW - Materials design KW - Halide perovskite KW - Halide double perovskite KW - High-throughput KW - Hybrid functional PY - 2025 AN - OPUS4-64009 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiben, Mario A1 - Nispel, Katja A1 - Tscheuschner, Frank T1 - Informationssystem Datenbank GEFAHRGUT - Modul für radioaktive Stoffe N2 - Vorstellung des neuen Moduls für radioaktive Stoffe der Datenbank GEFAHRGUT T2 - IAA-Symposium „Gefahrguttag“ mit begleitender Fahrzeugausstellung; Aktuelle Entwicklungen im Gefahrgutrecht und Erhöhung der Sicherheit von Gefahrgutfahrzeugen CY - Hannover, Germany DA - 27.09.2016 KW - Datenbank GEFAHRGUT KW - Informationssystem KW - Modul für radioaktive Stoffe PY - 2015 AN - OPUS4-37655 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Multiparameter investigations on wood samples T2 - International Workshop on Induced Polarization in Near-Surface Geophysics CY - Bonn, Germany DA - 2009-09-30 PY - 2009 AN - OPUS4-20146 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Melzer, Michael T1 - The temperature DCC exposed N2 - The DAkkS-accredited calibration laboratory of the German Federal Institute for Materials Research and Testing (BAM) has established valid XML digital calibration certificates (DCCs) for calibrations of resistance thermometers within the scope of its accreditation. Hence, all necessary information according to ISO/IEC 17025 and the DKD-R 5-1 calibration rule is provided in a machine-readable and machine-interpretable form. Furthermore, we actively participate in the definition of general and community-specific good practice requirements for the DCC of temperature quantities as technical specifications, hosted by the German Calibration Service (DKD). In this contribution the entire XML source code of a DCC from a Pt 100 thermometer calibration will be exposed and discussed. The DCC was automatically generated using a self-implemented middleware that is compiling the metadata (i.e. customer-, order-, item- and method data) and combines it with the measured calibration data and influence conditions into a process- and lab-specific DCC template. Since it was issued as an accredited calibration certificate, the validated and authorized DCC is also equipped with the novel digital accreditation symbol to form an `eAttestation´. This advanced electronic seal with a qualified certificate was recently piloted with the German national accreditation body (DAkkS), and, after successful validation by the receiver, verifies the active accreditation status of the issuing body at the time of sealing (authorization). As it also provides all other functionalities of an electronic seal, (i.e. data integrity and authenticity), it can fully replace a digital signature on accredited DCCs. The presented temperature DCC architecture fully complies to the latest good practice definitions of the DKD and thus represents a level 4 DCC according to the utility model for machine interpretability of DCCs. This also includes basic and quantity-specific refType definitions that are linked to an online refType repository to harmonize these key semantic providing elements across other DCC-issuing laboratories. The work was performed within the national QI-Digital initiative of the German Federal Ministry for Economic Affairs and Climate Action. T2 - Deutsche Marktüberwachungskonferenz 2025 CY - Berlin, Germany DA - 17.09.2025 KW - Calibration KW - Digital Calibration Certificate KW - E-Attestation KW - Digital Metrology KW - QI-Digital PY - 2024 AN - OPUS4-64147 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rhode, Michael T1 - Component-test for determination of welding residual stresses and their effect on stress relief cracking in thick-walled welds N2 - Controlling the residual stress level during welding of creep-resistant Cr-Mo-V steels is crucial to avoid so called stress relief cracking (SRC) during post weld heat treatment (PWHT) of large-scale components. In the present study, a laboratory scale test specimen (slotted sample with 400 mm width, 400 mm length and 25 mm thickness) was used to simulate thick-walled component welds made of 13CrMoV9-10. The aim was to identify the level and distribution of residual stresses to evaluate the suitability of the specimen for laboratory based SRC testing. High restraint was ensured by the specimen geometry with a narrow welding gap in the center. This gap was filled by multi-layer submerged arc welding. Two specimens were welded with identical parameters and compared in the as-welded state and after PWHT (705 °C for 10 h). Neutron diffraction was used to determine the residual stresses in the weld metal, the heat-affected zone (HAZ) and the base material at different depths longitudinal, transverse, and normal to the welding direction. The experiments were performed on the former instrument E3 of the research reactor BER II of Helmholtz-Zentrum Berlin (HZB), Germany. Complementarily, laboratory X-ray diffraction was applied to characterize the surface residual stresses. In the welded condition, especially in the weld metal and the adjacent HAZ, the longitudinal residual stresses reached values of up to 1,000 MPa to 1,200 MPa due to the increasing strength and hardness of the CrMoV-material during welding. The conducted welding experiments revealed that way higher residual stresses in the welded joint have to anticipated before the PWHT is performed than it was expected in advance. This demonstrated the necessity of suitable component-like welding tests as they must ensure realistic mechanical stiffness (hindered shrinkage of welding joint by slotted self-restraint sample) and heat dissipation conditions (definition of minimum welding joint thickness vs. welding process-specific heat input). T2 - FEMS Euromat 2025 - 18th European Congress and Exhibition on Advanced Materials and Processes CY - Granada, Spain DA - 15.09.2025 KW - Component test KW - Submerged arc welding KW - Post weld heat treatment KW - Residual stresses KW - Neutron diffraction PY - 2025 AN - OPUS4-64161 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Melzer, Michael T1 - The temperature DCC exposed N2 - The DAkkS-accredited calibration laboratory of the German Federal Institute for Materials Research and Testing (BAM) has established valid XML digital calibration certificates (DCCs) for calibrations of resistance thermometers within the scope of its accreditation. Hence, all necessary information according to ISO/IEC 17025 and the DKD-R 5-1 calibration rule is provided in a machine-readable and machine-interpretable form. Furthermore, we actively participate in the definition of general and community-specific good practice requirements for the DCC of temperature quantities as technical specifications, hosted by the German Calibration Service (DKD). In this contribution the entire XML source code of a DCC from a Pt 100 thermometer calibration will be exposed and discussed. The DCC was automatically generated using a self-implemented middleware that is compiling the metadata (i.e. customer-, order-, item- and method data) and combines it with the measured calibration data and influence conditions into a process- and lab-specific DCC template. Since it was issued as an accredited calibration certificate, the validated and authorized DCC is also equipped with the novel digital accreditation symbol to form an `eAttestation´. This advanced electronic seal with a qualified certificate was recently piloted with the German national accreditation body (DAkkS), and, after successful validation by the receiver, verifies the active accreditation status of the issuing body at the time of sealing (authorization). As it also provides all other functionalities of an electronic seal, (i.e. data integrity and authenticity), it can fully replace a digital signature on accredited DCCs. The presented temperature DCC architecture fully complies to the latest good practice definitions of the DKD and thus represents a level 4 DCC according to the utility model for machine interpretability of DCCs. This also includes basic and quantity-specific refType definitions that are linked to an online refType repository to harmonize these key semantic providing elements across other DCC-issuing laboratories. The paper and also its conference poster will not represent a general introduction and motivation for the DCC itself. It rather addresses more detailed aspects of good practice, especially for DCCs from temperature quantity calibrations and may stimulate in-depth discussions between DCC experts from the providing, utilizing and accrediting points of view. The work was performed within the national QI-Digital initiative of the German Federal Ministry for Economic Affairs and Climate Action, T2 - Global Industrie CY - Lyon, France DA - 11.03.2025 KW - Calibration KW - Digital Calibration Certificate KW - E-Attestation KW - Digital Metrology KW - QI-Digital PY - 2024 AN - OPUS4-64177 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blotevogel, J. T1 - Thermal PFAS Destruction in a Full-Scale Hazardous Waste Incinerator N2 - Incineration is currently the only commercial full-scale technology available to destroy per- and polyfluoroalkyl substances (PFAS) in large solid and liquid waste streams. Given previous experience of dioxin formation during halogenated waste incineration, concerns about the emission of products of incomplete destruction (PIDs) from PFAS incineration exist. The overarching objective of this project is to track the fate of fluorine during full-scale hazardous waste incineration in order to demonstrate the readiness, viability, and level of safety for thermal PFAS destruction in various waste streams. The specific objectives of this project are (1) to enhance our understanding of key variables and conditions on PFAS incineration performance, (2) to identify major PIDs under insufficient treatment conditions, (3) to explore the catalytic role of fly ash and other process-relevant surfaces in thermal PFAS decomposition, and (4) to determine the potential formation of polyfluorinated dibenzodioxins and dibenzofurans. T2 - 2025 SERDP & ESTCP PFAS Project Meeting CY - Long Beach, CA, USA DA - 04.08.2025 KW - PFAS KW - Hazardous waste incineration PY - 2025 AN - OPUS4-64189 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Avci, Fatma T1 - Characterization of black mass by X-Ray fluorescence spectroscopy N2 - X-ray fluorescence analysis (XRF) is a method of elemental analysis that is used either as wavelength dispersive XRF (WDXRF) or energy dispersive XRF (EDXRF). Using EDXRF, it is possible to analyze samples within a few minutes without time-consuming sample preparation. This makes the method potentially suitable for analyzing larger sample quantities under industrial conditions. However, the XRF method is matrix-dependent. Depending on the cathode material of the recycled batteries, there are significant differences in the composition of the resulting black mass. This means that specific calibration models must be developed for different types of black mass. The aim of our work is to use the EDXRF method to reliably analyze black mass of different origins with regard to the elements that are particularly interesting for recycling: nickel (Ni), manganese (Mn), cobalt (Co), aluminum (Al), iron (Fe), zinc (Zn), silicon (Si), copper (Cu), and phosphorus (P). Based on the different mass fractions of the elements mentioned, black masses from used lithium-ion batteries can be divided into three groups according to the cathode chemistry: lithium nickel manganese cobalt oxide (NMC), lithium cobalt oxide (LCO), and mixed chemistries (MC), the latter of which may contain lithium iron phosphate (LFP). The division into groups is necessary to determine the matrices and thus select the appropriate calibration model for the analysis of the EDXRF data in order to achieve the most accurate determination of the elemental content possible. Reference analyses are performed using WDXRF. The score plots obtained by PLS-DA of the specific elemental composition of the black masses examined to date by both WDXRF and EDXRF reveal a correct separation of the BM matrix types LCO, NMC, and MC. Our preliminary results with test samples yielded 100 % correct predictions with both data sets. However, only two matrix types, NMC and LCO, have been tested with the EDXRF data so far. Data for MC is pending as work progresses. T2 - Doctoral seminar 2025 - Working Group Chemometrics and Quality Assurance (GDCh) CY - Hamburg, Germany DA - 11.09.2025 KW - Black Mass KW - XRF Spectroscopy KW - Chemometric Modeling KW - PLS-DA PY - 2025 AN - OPUS4-64095 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Robot-assisted compositional screening in the System Na2O-Al2O3-B2O3-SiO2 N2 - The system Na2OB2O3SiO2 (NBS) is the basis of many industrial glass applications and therefore one of the most studied systems at all. Glass formation is possible over a wide compositional range, but the system also contains ranges of pronounced phase separation and crystallization tendency. Even small addition of Al2O3can change this behavior essentially. As the Na2OAl2O3B2O3SiO2 (NABS) system is also known as the basis for glasses in strength-relevant applications, the behavior during the transition from the NBS system to the NABS system is of interest. Therefore, some small step melt series in these systems were studied using the robotic glass melting system at the Federal Institute for Materials Research and Testing (BAM, Division Glasses). For these series the small step changes of glass transition temperature, crystallization behavior as well as glass density were studied. Additionally, experimental data were compared with their modeled counterparts. T2 - 98. Glastechnische Tagung CY - Goslar, Germany DA - 26.05.2025 KW - Sodium alumino boro silicate glasses KW - Glass transition temperature KW - Density KW - Robotic melting PY - 2025 AN - OPUS4-64076 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seifert, Lando A1 - Eggert, Lara T1 - Weathering Campaigns in the North Sea for an Offshore Power-to-X Project N2 - The poster contributes to the assessment of corrosivity in offshore atmospheric exposure environments according to DIN EN ISO 9224 for unalloyed steel, zinc, copper and aluminium. Studies on corrosivity from an offshore wind turbine and a distribution platform in the North Sea are presented. The results show that the corrosivity of unalloyed steel is mostly dependent on the altitude of exposure and whether it is inside or outside. T2 - Conference EUROCORR 2025 CY - Stavanger, Norway DA - 07.09.2025 KW - Weathnering Campaigns KW - North Sea KW - Corrosivity KW - Corrosion KW - Atmospheric Corrosion KW - Mass Loss KW - Corrosion Rate KW - Offshore Wind Turbine PY - 2025 AN - OPUS4-64086 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hauschildt, Charlotte T1 - PFAS in Food Contact Materials: How far can GC-MS take us? N2 - PFAS (per-and polyfluoroalkyl substances) represent a broadand complex class of synthetically produced chemicals with estimated 10,000 different compounds. Often referred to as forever chemicals,their defining characteristic is the complete or partial fluorination of the carbon chain. Due to their persistence, toxicity, and widespread occurrence, PFAS have been a major focus of scientific research over the past decade, particularly in the areas of identification, quantification, toxicity, and potential pathways into the environment [1,2]. In response to their harmful properties, a significant regulatory milestone was reached in 2022 when maximum levels for PFASin certain foods were included in the commission regulationNo.1881/2006on maximum levels for certain contaminants in foodstuffsfor the first time. In commission regulation 2022/2388, the European Commission defined maximum levels for two perfluorocarboxylicacids (PFOA and PFNA) and two perfluorosulfonic acids (PFOS and PFHxS) in certain foodstuff to ensure a high level of human healthprotection [3,4]. Effective monitoring of these contaminants requires highly sensitive analytical techniques. Currently, liquid chromatography-(tandem) mass spectrometry (LC-MS(/MS)) remains the gold standard for PFAS detection, offering a significantly extendeddetection range compared togas chromatography-mass spectrometry (GC-MS). However, to expand accessibility and enable more process-independent testing, GC-MS-based approaches are being actively developed and optimized [2,5].Although several analytical methods exist for detecting fluorinated contaminants in food, advancing their reliability, sensitivity, and applicability remains a critical challenge. Further optimization of GC-MS methodologies is essential to align with or extend beyond LC-MS techniques, enhancing their effectiveness in food and packaging analysis. Ultimately, these developments will contribute to improved food safety. This research is part of the EU project 23IND13 ScreenFood, which aims, as one of its objectives, to develop sensitive analytical methods for improved identification and quantification of various PFAS -both currently regulated and emerging -in selected food and food contactmaterials (FCM) [6]. In food contact material analysis, the focus is on nativeand recycled materialssuch as PET, PP,or cardboard, which are of widespread use. Various analysis techniques are to be tested and compared for the comprehensive identification and sensitive quantification of PFAS usedin FCM. These will include solvent-free approaches such as TD-GC-MS or large volume injection, which could enable fast and uncomplicated analysis. This poster will present improved GC-MS methods for the detectionand quantificationof variousPFAS classes and first insights into the analysis of severalfood contact materials (e.g. paper-based FCM) with GC-MS. Furthermore, the long-term objectives of the EU project ScreenFoodwill be outlined. The project (23IND13, ScreenFood) has received funding from the European Partnership on Metrology, co-financed from the European Union’s Horizon Europe Research and Innovation Programme and by the Participating States. T2 - XXII European Conference on Analytical Chemistry (EUROANALYSIS) CY - Barcelona, Spain DA - 31.08.2025 KW - Per- and Polyfluoroalkyl Substances (PFAS) KW - Gas Chromatography - Mass Spectrometry (GC-MS) KW - EU Project KW - Derivatization methods KW - Food Contact Material (FCM) PY - 2025 AN - OPUS4-64072 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Graeber, Gustav T1 - Graeber Lab for Energy Research at Tag der Chemie in Adlershof N2 - Highlighting recent progress in the Graeber Lab for Energy Research in the areas of alkali-metal tensiometry, alkali-metal anodes in contact with solid electrolytes, sulfur cathodes and solid electrolyte synthesis. T2 - Tag der Chemie in Adlershof 2025 CY - Berlin, Germany DA - 03.07.2025 KW - Batterie PY - 2025 AN - OPUS4-64068 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Classification of mineral wool by spectroscopic methods N2 - Mineral wools from demolition projects are currently disposed of in landfills. To reintroduce them into the material cycle, it is essential (i) to distinguish between glass wool (GW) and rock wool (RW), (ii) to detect foreign substances, and (iii) to assess the period of production (before/after 2000) to identify “old”, potentially carcinogenic wool. Both X-ray and NIR spectroscopic methods are being developed for this purpose and handheld (portable) devices are being tested for field application. To this end, more than 160 mineral wool samples were collected and examined. Since no reference information on the “material” or “age” was available for many samples, we characterized the elemental composition of the mineral wool using wavelength dispersive X-ray fluorescence spectroscopy (WDXRF). For this purpose, pellets and melt tablets were evaluated using a spectrometer-integrated semi-quantitative approach (Omnian). The resulting mass fractions of SiO2, Al2O3, CaO, MgO, K2O, Na2O, Fe2O3, and TiO2 could be used to distinguish between GW and RW and, in the case of RW, also whether it was “old” or “new” wool according to VDI guideline 3492. In some cases, however, ambiguous results were obtained in the material classification. Therefore, a principal component analysis (PCA) was performed enabling the identification of possible outliers and subgroups. Since the classification of “old” and “new” rock wool based on VDI 3492 yielded many unclear results, with the help of partial least squares discriminant analysis (PLS-DA), the classification was significantly improved [1]. WDXRF spectroscopy delivers accurate results, however, the spectrometers are not mobile and require time demanding sample preparation (pellets, melt tablets). Therefore, it was examined whether useful results could be achieved with portable energy dispersive (EDXRF) spectrometers. For this purpose, a portable EDXRF spectrometer (pXRF) was calibrated based on the WDXRF results. In general, oxides of the lighter elements (MgO and Na2O) could not be analyzed with EDXRF. Although prediction of oxide contents in melt tablets was successful by this approach, no reliable results could be obtained when predicting the oxide content of natural mineral wools. Attempts to perform calibration based on natural wools also failed. However, PCA of EDXRF spectra in the “Light” range was able to distinguish between GW and RW, even with “real-world” samples from so-called Bigbags [2], in which mineral wool in Germany is collected in recycling centers. In addition to XRF, a previous study has already demonstrated that at least the distinction between GW and RW can be performed using near-infrared spectroscopy (NIR) [3]. For this reason, measurements were also carried out with a handheld NIR device (pNIR) in parallel with the pXRF investigations. Using PLS-DA, it was possible to classify RW and GW using the handheld device with a sensitivity and specificity of 95% for 38 test samples, including wool from big bags. pNIR also remains sensitive when it comes to determining non-metallic “foreign materials.” For example, materials such as brick, plaster, concrete, and organic fibers could be detected by SIMCA as “non-mineral” wool with a specificity of 92% for 19 tested interferents [2]. Questions regarding the detection of metallic impurities based on EDXRF measurements are the subject of ongoing investigations. T2 - Doctoral Seminar of the Working Group Chemometrics & Quality Assurance CY - Hamburg, Germany DA - 10.09.2025 KW - Mineral wool KW - X-ray fluorescence KW - Data analyis PY - 2025 AN - OPUS4-64077 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epple, Niklas T1 - Bridge Monitoring with Coda Waves - Embedding Ultrasonic Transducers in a Reinforced Concrete Bridge to Monitor Small Changes in Multiply Scattered Waves N2 - Within a DFG-funded research group, we investigate the possibility of concrete damage assessment with coda waves. Coda wave interferometry (CWI) can be a valuable asset to structural health monitoring (SHM) as we can detect small signal changes and quantify them with the calculation of relative velocity changes. By equipping an in-service road bridge with more than 24 embedded ultrasonic transducers, we want to analyze how methods developed within the research group perform in an uncontrollable environment. We evaluate individual source-receiver combinations for detection of temporal changes as well as the entire installed sensor array to create maps of material change comparing two distinct states of the bridge. T2 - Research Unit CoDA Summer School 2 CY - Garmisch-Partenkirchen, Germany DA - 19.07.2022 KW - Coda Wave Interferometry KW - Embedded sensors KW - Structural Health Monitoring KW - Ultrasound KW - Reinforced Concrete Structures PY - 2022 AN - OPUS4-55382 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epple, Niklas T1 - Monitoring Reinforced Concrete Structures with Coda Waves The Influence of Temperature on Ultrasound Velocity Changes calculated with Coda Wave Interferometry N2 - Monitoring of reinforced concrete structures to ensure their stability and increase their service-life is a crucial element of a modern infrastructural concept. With classical methods of non-destructive testing and inspection, repeated measurements under comparable conditions are difficult to conduct. Therefore, DFG research unit FOR 2825 CoDA researches the assessment of concrete damage using ultrasound coda wave interferometry and embedded sensors. Embedding the sensors into the monitoring target reduces human and non-human factors influencing repeatability. Using Coda Wave Interferometry (CWI), small velocity changes in the material can be detected by comparison of repeated measurements. The technique is sensitive to damaging changes like cracking as well as to reversible influences like material temperature. The understanding of these different influences on the signal is crucial for the analysis of long-term monitoring data to make an educated assessment of the structure and its integrity. With several laboratory experiments in a climate chamber and a long-term experiment recording an annual cycle in a large model on an outdoor test site in Horstwalde close to Berlin, we try to understand the influence of temperature on the CWI results. The results show that the velocity change calculated by CWI does closely follow the trend of concrete temperature. After one year of data recording with the large model being exposed to environmental variations only, the calculated velocity change resembles the annual temperature curve. The data shows a linear dependency between velocity and temperature change in a range of -0.03 percent per °K to -0.06 percent per °K - regardless of specimen size. An approach to remove temperature influence from the yearly cycle recorded in the large-scale experiment using this linear relation is unable to remove high-frequency variations - especially daily influences. Low-pass filtering the data can eliminate these variations while preserving permanent shifts caused by damages. Although we have shown that the influence of temperature on long term monitoring can be removed to a significant extent, there is still an influence of environmental changes remaining in the data. Possible nonlinear effects and influences not related to temperature need to be investigated in the future. T2 - DGG 81. Jahrestagung 2021 CY - Online meeting DA - 01.03.2021 KW - Ultrasound KW - Bridge Monitoring KW - Coda Wave Interferometry KW - Structural health monitoring PY - 2021 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-522401 DO - https://doi.org/10.23689/fidgeo-3975 AN - OPUS4-52240 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lay, Vera A1 - Niederleithinger, Ernst A1 - Köpp, Christan T1 - Monitoring and digital tools for pre-disposal handling of cemented wastes N2 - Multifaceted developments for pre-disposal management of low and intermediate level radioactive waste are undertaken in the EC funded project PREDIS. In work package 7, innovations in cemented waste handling and pre-disposal storage are advanced by testing and evaluating. To provide better means for safe and effective monitoring of cemented waste packages including prediction tools to assess the future integrity development during pre-disposal activities, several monitoring and digital tools are evaluated and improved. Both safety enhancement (e. g. less exposure of testing personnel) and cost effectiveness are part of the intended impact. Current methods to pack, store, and monitor cemented wastes are identified, analysed and improved. Innovative integrity testing and monitoring techniques applied to evaluate and demonstrate package and storage quality assurance are further developed. The work includes but is not limited to inspection methods such as muon imaging, wireless sensors integrated into waste packages as well as external package and facility monitoring such as remote fiber optical sensors. The sensors applied will go beyond radiation monitoring and include proxy parameters important for long term integrity assessment (e. g. internal pressure). The measured data will be used in digital twins of the packages for specific simulations (geochemical, integrity) providing a prediction of future behaviour. Machine Learning techniques trained by the characterization of older packages will help to connect the models to the actual data. As data handling, processing and fusion are crucial for both the monitoring and the digital twin model, all data (measured and simulated) will be collected in a joint data base and connected to a decision framework. Finally, the implementation of the improved techniques will be tested at actual facilities. An overview about various relevant tools, their interconnections, and first research results will be shown. T2 - 9th IGD-TP Symposium CY - Zurich, Switzerland DA - 20.09.2022 KW - Predis KW - Monitoring KW - Sensors KW - Simulation KW - Digital twin PY - 2022 AN - OPUS4-55827 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - TAILSAFE: Investigation and Improvement of Tailings Facilities T2 - NDT-CE 2003, International Symposium Non-Destructive Testing in Civil Engineering CY - Berlin, Germany DA - 2003-09-16 PY - 2003 AN - OPUS4-3827 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhse, Marek T1 - Completing the analytical picture - Combing µ-LIBS and µ-Raman T2 - Tag der Chemie CY - Potsdam, Germany DA - 2009-06-04 PY - 2009 AN - OPUS4-19302 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Evans, Alexander T1 - AGIL Project - Microstructure development in additively manufactured metallic components: from powder to mechanical failure N2 - Overview of the concept of the AGIL Project, work packages and Prior published work from BAM on the subject T2 - Challenges in Additive Manufacturing: Innovative Materials and Quality Control CY - BAM, Berlin-Adlershof, Germany DA - 12.09.2018 KW - AGIL KW - Additive manufacturing PY - 2018 AN - OPUS4-46100 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chinthalapati, Siva Kesava Raju T1 - A novel solid phase extraction method for preconcentration of Gadolinium based MRI contrast agents from the environment T2 - EUROANALYSIS 2009 CY - Innsbruck, Austria DA - 2009-09-06 PY - 2009 AN - OPUS4-20382 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chinthalapati, Siva Kesava Raju T1 - Hydrophilic Interaction Chromatography coupled with Inductively Coupled Plasma Mass Spectrometry for the speciation analysis of Gadolinium based MRI contrast agents T2 - 34th International Symposium on High-Performance Liquid Phase Separations and Related Techniques, HPLC2009 CY - Dresden, Germany DA - 2009-06-28 PY - 2009 AN - OPUS4-20593 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abad Andrade, Carlos Enrique T1 - Redefining stable isotope analysis by molecular absorption spectrometry N2 - Variations in the isotope amount composition of some elements like lithium, boron, magnesium, calcium, copper and strontium have been used as proof of provenance of a sample and to describe geological processes. Routinely, isotope compositions are determinate by mass spectrometry; the working horse of the isotope analysis. However, mass spectrometric methods are expensive, time consuming and they require a high qualified analysist. Here an alternative faster and low cost optical method for isotope ratio determination is proposed: high-resolution continuum source molecular absorption spectrometry (HR-CS-MAS). Stable isotope amount composition of X= Li, B, Mg, Ca, Cu and Sr have been determined by monitoring the absorption spectrum of their monohydride (XH) in graphite furnace HR-CS-MAS. For example, for the three Mg isotopes (24Mg, 25Mg and 26Mg) band (0→0) for the electronic transition X1Σ+ → A1Π was evaluated around wavelength 513.4 nm (Fig. 1). Partial least square regression (PLS) for analysis of samples and reference materials were applied. For this, a spectral library with different isotopes ratios for PLS regression were built. Results are metrological compatible with those reported by mass spectrometric methods. T2 - Adlershofer Forschungsforum 2017 CY - Berlin, Germany DA - 10.11.2017 KW - Isotopes KW - High-Resolution Continuum Source Molecular Absorption Spectrometry KW - HR-CS-MAS KW - Isotopic shift KW - Metal hydrides KW - Graphite furnace KW - Molecular absorption PY - 2017 AN - OPUS4-43342 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schünemann, Pia T1 - Seasonal PFAS monitoring in surface water via complementary EOF (HR-CS-GFMAS) and target analytics N2 - The aim of this study was to investigate seasonal shifts in PFAS contamination. Therefore, samples were collected from the River Spree to measure the level of extractable organically bound fluorine (EOF). This was achieved by employing high resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS), a method for EOF surface water analysis first described by Metzger et al.. Complementary target-screenings were performed for a small set of relevant PFAS to achieve a more detailed look into the PFAS contamination over time and space and into the identifiable fraction of the EOF. Furthermore, hot spots of relevant PFAS pollution were identified in the river system. T2 - PFAS - Vermeidbar, Ersetzbar, Unverzichtbar?! CY - Berlin, Germany DA - 07.04.2025 KW - PFAS KW - HR-CS-GFMAS KW - Environmental Analysis PY - 2025 AN - OPUS4-63137 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schünemann, Pia T1 - Seasonal PFAS monitoring in surface water via complementary EOF (HR-CS-GFMAS) and target analytics N2 - The aim of this study was to investigate seasonal shifts in PFAS contamination. Therefore, samples were collected from the River Spree to measure the level of extractable organically bound fluorine (EOF). This was achieved by employing high resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS), a method for EOF surface water analysis first described by Metzger et al.. Complementary target-screenings were performed for a small set of relevant PFAS to achieve a more detailed look into the PFAS contamination over time and space and into the identifiable fraction of the EOF. Furthermore, hot spots of relevant PFAS pollution were identified in the river system. T2 - Anakon 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - PFAS KW - HR-CS-GFMAS KW - Environmental Analysis PY - 2025 AN - OPUS4-63136 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Jonathan T1 - Near-real-time in-situ powder bed anomaly detection using machine learning algorithms for high-resolution image analysis in PBF-LB/M N2 - In-situ captured visual images of the laser powder bed fusion process (PBF-LB/M) provide valuable insights into process dynamics. Automatic analysis of after-recoating images using machine learning algorithms enables the detection of process deviations to reduce scrap production. However, current industrial monitoring systems for PBF-LB/M are limited by low image resolution. While higher resolutions enable the system’s ability to capture smaller features, they increase storage and computational demand. Edge devices offer a solution by enabling near-real-time, on-premises image analysis within the machine and company network. In this study, high-resolution after-recoating images, captured with a spatial resolution of 17 µm/pixel and an image size of 9344 x 7000 pixels, were processed on an Nvidia Jetson Orin NX16 edge device. The images were downscaled, and anomaly detection algorithms were used to identify regions of interest for segmentation and classification at full resolution. To address computational constraints, state-of-the-art anomaly detection algorithms were evaluated and an appropriate downscaling factor for the on-edge implementation was determined. The EfficientAD algorithm achieved promising results, detecting anomalies within an inference time of less than 10 seconds. The presented framework enables anomaly detection with a maximum delay of one layer. This lays the foundation for the future development of near-real-time intervention in the PBF-LB/M process. T2 - ISAM 2025 – 6th International Symposium on Additive Manufacturing CY - Dresden, Germany DA - 21.05.2025 KW - Additive manufacturing KW - Image processing KW - In-situ monitoring KW - Powder bed fusion PY - 2025 AN - OPUS4-63231 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Petrov, Valery T1 - Zeolithkristallisation bei simultanem Einsatz SiO2- und CaO-reicher industrieller Reststoffe und alkalischer Aktivierung T2 - 22. Jahrestagung der Deutschen Gesellschaft für Kristallographie CY - Berlin, Deutschland DA - 2014-03-17 PY - 2014 AN - OPUS4-32032 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hartmann, Andrea T1 - Optimierung der Kristallisation von Zeolith Na-A aus Rückständen der Silanproduktion T2 - 22. Jahrestagung der Deutschen Gesellschaft für Kristallographie CY - Berlin, Deutschland DA - 2014-03-17 PY - 2014 AN - OPUS4-32033 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Barthel, Maria T1 - Prüfung puzzolanischer Eigenschaften von Reststoffen aus industrieller Abwasseraufbereitung und Verbrennungsprozessen T2 - GdCH-Tagung Bauchemie CY - Kassel, Deutschland DA - 2014-10-06 PY - 2014 AN - OPUS4-32047 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Zeolite crystallization experiments under insertion of laboratory ware waste material T2 - 23. Jahrestagung der deutschen Gesellschaft für Kristallographie CY - Göttingen DA - 2015-03-16 PY - 2015 AN - OPUS4-32839 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maack, Stefan T1 - Räumliche Kenngrößen des Schallfeldes punktförmiger Ultraschall-Prüfköpfe im Niederfrequenzbereich in Polyamid - Experimentelle Untersuchungen und Simulation T2 - Jahrestagung 2013 "Deutscher Gesellschaft für Zerstörungsfreie Prüfung" CY - Dresden DA - 2013-05-06 PY - 2013 AN - OPUS4-33434 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Active and passive ultrasonic experiments with transducers embedded in concrete T2 - CARGESE summer School: "Passive Imaging and monitoring in wave physics: from seismology to ultrasound" CY - Cargese, France DA - 2015-05-11 PY - 2015 AN - OPUS4-34376 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maack, Stefan T1 - Elastic wave propagation of ultrasound in bituminous road surfaces - simulations and measurements T2 - International Symposium Non-Destructive Testing in Civil Engineering (NDT-CE) CY - Berlin, Germany DA - 2015-09-15 PY - 2015 AN - OPUS4-34296 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Leichte Gesteinskörnungen aus Mauerwerkbruch - Mikrostrukturelle und mineralogische Eigenschaften T2 - 19. Internationale Baustofftagung (ibausil) CY - Weimar DA - 2015-09-16 PY - 2015 AN - OPUS4-34502 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Selleng, Christian T1 - Effect of 90°C thermal treatment on Ultra-High Performance Concrete N2 - Ultra High Performance Concrete (UHPC) is characterized by high strength and high durability. This is achieved by an optimized grain size distribution, especially within fine grains, and addition of superplasticizer, which allow the reduction of the water/cement ratio in the cement paste and thereby the increase of the density of UHPC. Thermal treatment, i.e. curing at elevated temperature and pressure, contributes to a further increase of compressive strength. The aim of the presented study was to analyze the effect of thermal treatment at 90 ◦C and atmospheric pressure on UHPC samples. Varying factors were the age of the samples when heat treatment started (initial storage time), the duration of heat treatment and the type of heat treatment. It was applied in three ways: 1. treated without any protection, 2. sealed in plastic foil and 3. treated in hot water. Afterwards the samples were analyzed with respect to their mechanical properties and their phase composition. Furthermore, the weight (water absorption) of the samples was observed over 28 days and was correlated with the strength test results. The development of strength depends on the combination of initial storage time and the duration of heat treatment and is also influenced by the type of thermal treatment. The highest compressive strengths have been observed by implementing the hot water treatment. Thereby the weight of the samples increase due to additional absorbed water. This enables an increased hydration of cement clinker inducing a higher strength. T2 - GeoBerlin 2015: Dynamic Earth - from Alfred Wegener to today and beyond CY - Berlin, FU Berlin DA - 04.10.2015 PY - 2015 AN - OPUS4-34504 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Werner, Daniel T1 - The Damage Potential of Alkali-Silica Reaction by Using Sand and Fine Gravel Grain Sizes for Various Reactive Aggregates T2 - GeoBerlin 2015 CY - Berlin DA - 2015-10-04 PY - 2015 AN - OPUS4-34647 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmann, C. T1 - Investigations on the process of autoclaving Ultra-High Performance Concrete (UHPC) T2 - 19. Internationale Baustofftagung (ibausil) CY - Weimar DA - 2015-09-16 PY - 2015 AN - OPUS4-34495 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Recycling von Mauerwerkbruch T2 - Jahrestagung Aufbereitung und Recycling 2015 CY - Freiberg DA - 2015-11-11 PY - 2015 AN - OPUS4-34805 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Redmer, Bernhard A1 - Weise, Frank A1 - Ewert, Uwe A1 - Patitz, G. T1 - Kombinierter Einsatz zerstörungsfreier Prüfverfahren zur Bauzustandsanalyse antiker Baudenkmäler im Pergamonmuseum Berlin N2 - Zur Planung und Durchführung umfangreicher Sanierungs- und Umbaumaßnahmen im Pergamon-Museum Berlin bestand die Erfordernis einer Bauzustandsanalyse an antiken Baudenkmälern. Bestandsunterlagen waren unvollständig vorhanden bzw. fehlten. Hieraus ergab sich die Notwendigkeit des kombinierten Einsatzes zerstörungsfreier Prüftechnik. T2 - Jahrestagung Zerstörungsfreie Materialprüfung 2004 CY - Salzburg, Austria DA - 17.05.2004 KW - Baudenkmal KW - Bauzustandsanalyse KW - Radar KW - Radiografie KW - Videoskopie KW - Zerstörungsfreie Prüfung PY - 2004 AN - OPUS4-35531 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strangfeld, Christoph T1 - Einsatzfähigkeit von RFID-Tags zur Identifikation und Diagnose von Bauteilen in der intelligenten Straßeninfrastruktur T2 - Symposium "Intelligente Brücken" der BASt CY - Bergisch Gladbach, Deutschland DA - 2015-11-30 PY - 2015 AN - OPUS4-34997 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strangfeld, Christoph T1 - Multimethodische Bestimmung von Feuchtegradienten in Estrich N2 - Um den Feuchtegehalt von Fußbodenestrich vor der Verlegung von Holz- oder anderen Bodenbelägen zu bestimmen, werden zerstörende Prüfverfahren wie die Calcium-Carbid Methode (CM) oder das thermogravimetrische Darr-Verfahren eingesetzt. Diese liefern jedoch einmalig nur punktuelle Informationen und sind je nach Estrichtyp auch störanfällig. Zusammen mit Partnern aus Forschung und Industrie wurde an der BAM ein Ringversuch durchgeführt, dessen Ziel es war, verschiedene nach Möglichkeit zerstörungsfreie oder – arme Prüfverfahren hinsichtlich ihrer Genauigkeit und Sensitivität vor allem im Bereich der Belegereife zu testen. Hier dargestellt sind die Ergebnisse aufgenommen an einer Calciumsulphat-Estrich Probe vom Typ Knauf FE80 Largo mit drei Verfahren, die auch Aussagen über die Feuchtegradienten in die Tiefe zulassen. Die Proben wurden bei Konstant-Normklima mit T=23 °C und rH=50 % zur Trocknung gelagert. T2 - Bauwerksdiagnose 2016 CY - Berlin, Germany DA - 25.02.2016 KW - Feuchtemessung KW - Estrich KW - Sensorik PY - 2016 N1 - Geburtsname von Munsch, Sarah Mandy: Nagel, S. M. - Birth name of Munsch, Sarah Mandy: Nagel, S. M. AN - OPUS4-35478 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Chances and limitations of RFID sensor systems – practical experiences from research projects with different application scenarios N2 - The combination of Radio-frequency identification (RFID) and low energy sensors offers promising chances to implement cost effective, easy to apply, and easy to handle sensor systems for a variety of applications. The RFID technology is already well established in logistics. Enhanced processing and interface capabilities enable the integration of various sensors for control, diagnostics, and monitoring tasks. In the scope of research projects carried out at the Federal Institute for Materials Research and Testing (BAM), RFID sensor systems were developed and validated with regard to two different application scenarios: the Identification and diagnosis of concrete components for road bridges and the monitoring of dangerous goods transportation. This contribution presents selected research results and reflects the practical experiences on future chances and limitations of RFID sensor systems. T2 - IDTechEx Show! Europe 2016 CY - Berlin, Germany DA - 27.04.2016 KW - RFID Sensors systems KW - Diagnosis of concrete components KW - Monitoring of dangerous goods PY - 2016 AN - OPUS4-36034 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias T1 - Transmission characteristics of RFID sensor systems embedded in concrete N2 - Completely embedded sensor systems for long-term operation offer innovative possibilities for structural health monitoring of concrete structures. Measuring of relevant parameters, e.g., temperature, humidity, or indication of corrosion can be performed with low energy sensors. This allows to implement passive RFID sensor systems without cable connection and battery, which are power supplied exclusively by the electromagnetic field from the external reader device. To evaluate characteristics and conditions of this concept, a systematical investigation of the transmission characteristics with variation of relevant parameters, as communication frequency, installation depth, type of concrete, moisture content, etc. is currently carried out in an interdisciplinary Research project at BAM. First results are presented in this paper. T2 - IEEE Sensors 2016 CY - Orlando, FL, USA DA - 30.10.2016 KW - Embedded sensors KW - Energy harvesting KW - Wireless sensors KW - RFID sensors KW - Transmission characteristics KW - Structural health monitoring PY - 2016 AN - OPUS4-38387 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reuter, U. A1 - Taffe, A. A1 - Maack, Stefan T1 - Messung von Bauteildicken an Brückenquerschnitten mit Ultraschallecho zur weiteren Verwendung in statischen Berechnungen zur verbesserten Ermittlung des Eigengewichts N2 - Mit zunehmenden Alter und wachsenden Verkehr treten vermehrt Verschleißerscheinungen an Brückenbauwerken auf. Um in der Zukunft dem weiter steigendem Straßenverkehr gewachsen zu sein, muss besonders der Zustand der Bestandsbrücken vor 1985 erfasst und beurteilt werden. Im Rahmen der Nachrechnungsrichtlinie von Straßenbrücken können genauere Kenntnisse über das Eigengewicht eines Brückenbauwerks dazu genutzt werden, um den entsprechenden Teilsicherheitsbeiwert auf der Einwirkungsseite der statischen Berechnung abzusenken und dadurch die Realität genauer abzubilden. Mit Hilfe des Ultraschallechoverfahrens wurden die Bauteildicken an einem Brückensegment der Spandauer-Damm-Brücke auf dem TTS der BAM ermittelt und zur Berechnung des Eigengewichtes weiter verwendet. Zeitgleich wurde dabei untersucht, wie dicht das Messraster gewählt werden muss, damit bei einem möglichst geringen Messaufwand dennoch zuverlässig Bauteildicken abgeschätzt werden können. Auf Grundlage der ausgewerteten Messdaten wurde für die verschiedenen Messpunktabstände die jeweilige Masse des Bauteils berechnet. Zur Überprüfung der Genauigkeit der Ergebnisse wurde das Brückensegment als Ganzes gewogen. Des Weiteren wurden die ermittelten Bauteildicken und Massen des Brückensegmentes nach der Methode des GUMs (Guide to the Expression of uncertainty in measurement) statistisch bewertet. Die Ergebnisse zeigen, das Bauteildicken bis auf 96 % genau mit dem Ultraschallechoverfahren ermittelt werden können. Dabei offenbarte die statistische Auswertung, dass das Eigengewicht von der Rohdichte des Betons und den mit Ultraschallechoverfahren ermittelten Bauteildicken maßgebend beeinflusst werden. Daher sollte einer genaueren Bestimmung der Rohdichte zur Abschätzung des Eigengewichts nach der vorgestellten Methode besondere Aufmerksamkeit geschenkt werden. Die Masterarbeit (Titel s.o.) entstand im Sommersemester 2015 an der HTW Berlin in Kooperation mit der BAM und ist in der Bibliothek der HTW Berlin verfügbar. T2 - Fachtagung Bauwerksdiagnose Praktische Anwendungen Zerstörungsfreier Prüfungen und Zukunftsaufgaben CY - Berlin, Germany DA - 25.02.2016 KW - Brücke KW - Nachrechnungsrichtlinie KW - Zerstörungsfreie Prüfung PY - 2016 AN - OPUS4-39297 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sunkavalli, Viswa Ratnasri T1 - Thickness Measurements of Polyamide Specimens using Fluidic Oscillator as a Frequency Modulated Air-Coupled Ultrasonic Transducer N2 - Ultrasonic inspection, especially contact and immersion methods, have become established techniques for non-destructive testing in civil engineering (NDT-CE). However, the requirement for coupling agents renders these methods cumbersome in practice due to the potential for surface defacement and an arduous measurement process. Consequently, air-coupled ultrasonic transducers have been proposed as an alternative to address these concerns. These (alternatives), however, come with their own challenges, such as a significant impedance mismatch between the air and the specimen as well as the susceptibility of time of flight (TOF) measurements to ambient conditions. Recently, fluidic oscillators have been developed for in-air sound generation to alleviate impedance mismatch and improve the overall robustness, which is an important consideration of NDT-CE applications. The advantage of fluidic oscillators lies in their ability to generate an ultrasonic signal via oscillating air jet excited by a self-actuated fluctuation. Using air as the operating medium provides a supplementary benefit of lowering measurement durations in addition to a substantial drop in acoustic impedance losses with air acting both as an actuation as well as a coupling medium. Thus, TOF measurements using such fluidic transducers are expected to enable faster characterization of specimen parameters. In that regard, material characterization of polyamide is carried out using ultrasound generated by fluidic devices. Additionally, the mass flow rate of the operating fluid is observed to have a significant effect on the frequency of the fluidic oscillator. Accordingly, the frequency of the oscillation is modulated by varying the supply pressure, leading to a varying flow rate, which in turn facilitates a robust and reliable assessment of the TOF through the material by the generated chirp signals. Furthermore, such frequency modulations effectively improve the signal-to-noise ratio (SNR). Along with a comprehensive study of these new fluidic transducers, preliminary measurement findings are presented, including the material characterization of polymers using air-coupled, frequency-modulated ultrasound. T2 - European Conference on Non-Destructive Testing (ECNDT) CY - Lisbon, Portugal DA - 03.07.2023 KW - Air coupled ultrasound KW - Fluidic actuator PY - 2023 AN - OPUS4-57940 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Voigt, Marieke T1 - Thermally treated UHPC: a durability study N2 - Ultra high performance concrete (UHPC) is known for its high compressive strength of more than 150 MPa and its high durability. Thermal treatment at 90°C can accelerate the strength development so that the 28-days-strength can be achieved immediately after the treatment and an additional increase up to 30 % in some cases. The reason for the strength development is an accelerated hydration of the clinker minerals and an intensified pozzolanic reaction leading to a denser microstructure. In previous research inhomogeneities in form of a zonation after unprotected thermal treatment were observed and analysed in respect to changes in the microstructure. This zonation is defined by a different microstructure in the core compared to the outer zone in the matter of porosity, mineral phase composition and a significant change in the potassium and sulphur concentration of the zones is measurable. To isolate different transport mechanisms responsible for these element distributions UHPC samples were thermally treated at 90 °C and the microstructure was investigated under dry conditions and after immersion in water to investigate the influence of dehydration during and rehydration after the thermal treatment on the microstructure. Through durability testing via water absorption, water vapour diffusion, permeability testing and sulfuric acid resistance transport mechanisms like diffusion, migration, capillary suction are under investigation in correlation with the microstructure analysis. For the microstructure analysis measurements with µXRF, mercury intrusion porosity, XRD and SEM were conducted. T2 - HiPerMat 2020 CY - Kassel, Germany DA - 11.03.2020 KW - UHPC KW - Thermal treatment KW - Zonation KW - Transport mechanism KW - Durability PY - 2020 AN - OPUS4-52372 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kilinc, Sefine T1 - Grinding method and oxidative aging of tire wear microplastics affect the fitness of the nematode C. elegans N2 - This study gives a first insight in the toxicological relevance of tire wear MP on soil invertebrates. Both grinding technique and aging method had an effect on the results of the particle size distribution, particle properties and toxicity tests. This outcome highlights the importance of oxidative and mechanical aging of tire wear when investigating effects on soil biota. In particular the demonstrated differences due to grinding method of the pristine material questions scientific practice in common toxicity tests. It is essential to implement realistic refernce material as well as standardized aging and handling procedures. T2 - Tire Emissions Research Conference 2024 CY - Munich, Germany DA - 04.12.2024 KW - Nematode C. elegans KW - Oxidative aging KW - Tire wear KW - Microplastics PY - 2024 AN - OPUS4-62361 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs A1 - Fontana, Patrick A1 - Meng, Birgit T1 - BAM-Division VII.1 Building Materials: Main Expertise/NANOCEM Partner Project T2 - Nanocem Open meeting CY - Morges, Switzerland DA - 2005-04-29 PY - 2005 AN - OPUS4-7420 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Porenstruktur von Beton mit Recyclingzuschlägen N2 - Recyclingzuschläge (rezyklierte Gesteinskörnungen, Betonsplitt) werden großtechnisch aus dem Material, das beim Abbruch von Betonbauwerken anfällt, hergestellt. Sie bestehen zu mehr als 90% aus Altbeton. Die Wiederverwendung dieser Materialien zur Herstellung von neuen hochwertigen Beton erfordert umfangreiche Kenntnisse über ihre betontechnologischen und chemisch-physikalischen Eigenschaften. Zwei unterschiedliche Recyclingzuschläge und die damit hergestellten Betone wurden im Vergleich zu einem Referenzbeton mit natürlichen Zuschlägen gleicher Sieblinie untersucht. T2 - Tag der offenen Tür der BAM CY - Berlin, Germany DA - 19.06.2004 PY - 2004 AN - OPUS4-11432 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Mikrostruktur von hochfestem Beton N2 - Hochfeste Betone werden durch die Zugabe puzzolanischer Zusatzstoffe (Microsilica, Flugasche) und die Reduzierung des Wasser-Zement-Wertes bei gleichzeitiger Verwendung eines Fließmittels hergestellt. Diese Modifizierungen des Betons beeinflußen die Zusammensetzung und die Mikrostruktur seiner Mörtelmatrix. T2 - Tag der offenen Tür der BAM CY - Berlin, Germany DA - 19.06.2004 PY - 2004 AN - OPUS4-11431 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Untersuchung der Porenstruktur durch Quecksilberintrusion T2 - Tag der offenen Tür der BAM CY - Berlin, Germany DA - 2004-06-19 PY - 2004 AN - OPUS4-11429 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Untersuchung der Porenstruktur durch Sorptionsmessungen T2 - Tag der offenen Tür der BAM CY - Berlin, Germany DA - 2004-06-19 PY - 2004 AN - OPUS4-11430 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Reststoffverwertung in zementgebundenen Baustoffen T2 - Vorstellung der Arbeitsgruppe "Ressourcenschonung durch Reststoffverwendung" CY - Berlin, Germany DA - 2004-11-01 PY - 2004 AN - OPUS4-11434 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - LA-ICP-MS zur Bestimmung von Elementspuren in Niobpentoxid-Pulver T2 - 9. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse, 22. ICP-MS Anwendertreffen CY - Berlin, Germany DA - 2010-09-06 PY - 2010 AN - OPUS4-21791 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Determination of trace elements in Nb2O5 powder using LA-ICP-MS T2 - 10th European Workshop on Laser Ablation CY - Kiel, Germany DA - 2010-06-29 PY - 2010 AN - OPUS4-21790 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ramge, Peter T1 - Einflüsse der Mischungszusammensetzung auf die Porenstruktur von Instandsetzungsmörteln N2 - Untersucht wurde der Einfluss der Applikationsart (konventionelle und gespritzte Herstellung, Wasserlagerung bis zur Prüfung), der Einfluss von Fasern (konventionelle Herstellung, Wasserlagerung bis zur Prüfung) und der Einfluss von Schwindreduzierern (konventionelle Herstellung, Luftlagerung bis zur Prüfung). T2 - XV. Workshop über die Charakterisierung von feinteiligen und porösen Festkörpern (Porotec-Workshop) CY - Bad Soden, Germany DA - 16.11.2010 PY - 2010 AN - OPUS4-22634 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schnell, A. A1 - Müller, A. A1 - Rübner, Katrin T1 - Aufbaukörnungen - Heterogener Bauschutt als Rohstoff für die Herstellung von Leichtgranulaten T2 - Symposium "Rohstoffeffizienz und Rohstoffinnovationen" CY - Nuremberg, Germany DA - 2011-02-10 PY - 2011 AN - OPUS4-23247 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strangfeld, Christoph A1 - Kruschwitz, Sabine T1 - Multimethodische Bestimmung von Feuchtegradienten in Estrich N2 - Um den Feuchtegehalt von Fußbodenestrich vor der Verlegung von Holz- oder anderen Bodenbelägen zu bestimmen, werden zerstörende Prüfverfahren wie die Calcium-Carbid Methode (CM) oder das thermogravimetrische Darr-Verfahren eingesetzt. Diese liefern jedoch einmalig nur punktuelle Informationen und sind je nach Estrichtyp auch störanfällig. Zusammen mit Partnern aus Forschung und Industrie wurde an der BAM ein Ringversuch durchgeführt, dessen Ziel es war, verschiedene nach Möglichkeit zerstörungsfreie oder – arme Prüfverfahren hinsichtlich ihrer Genauigkeit und Sensitivität vor allem im Bereich der Belegereife zu testen. Hier dargestellt sind die Ergebnisse aufgenommen an einer Calciumsulphat-Estrich Probe vom Typ Knauf FE80 Largo mit drei Verfahren, die auch Aussagen über die Feuchtegradienten in die Tiefe zulassen. Die Proben wurden bei Konstant-Normklima mit T=23 °C und rH=50 % zur Trocknung gelagert. T2 - Fachtagung Bauwerksdiagnose CY - Berlin, Germany DA - 25.02.2016 KW - Estrich KW - Nuklear Magnetische Resonanz KW - Elektrischer Widerstand KW - Feuchtegehalt KW - Zerstörungsfreie Prüfverfahren PY - 2016 N1 - Geburtsname von Munsch, Sarah Mandy: Nagel, S. M. - Birth name of Munsch, Sarah Mandy: Nagel, S. M. AN - OPUS4-36994 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weise, Frank T1 - Influence of aggregate size on the damage potential of alkal-silica-reaction N2 - The poster shows new results on Alkali-Silica-Reaction (a damage mechanism of concrete). The influence of the aggregate size in the sand fraction is investigated, revealing that different types of aggregate behave in a different way. T2 - 15th International Conference of Alkali Aggregate Reaction in Concrete (ICAAR 2016) CY - Sao Paulo, Brazil DA - 03.07.2016 KW - Alkali-silica-reaction KW - Building materials KW - Concrete KW - Durability PY - 2016 AN - OPUS4-36951 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strangfeld, Christoph T1 - Embedded RFID-sensors for concrete bridge structures N2 - In the near future, it will be important to adopt innovative approaches and technologies in order to further guarantee the reliability and availability of the highway network. New tools are therefore needed in order to obtain in-depth information about the condition of bridges and its development early enough before significant, precarious damage cases occur. In 2011, the research program “Intelligente Brücken (Smart Bridges)” was launched by the BASt together with the BMVI to evolve systems for information and holistic evaluation for Bridge structures as a supplement to the current inspection-based maintenance management. Several projects dealt with the topic in the last few years and provided guidelines and a solid basis to move towards a first implementation considering the input of all research projects carried out so far. T2 - International Symposium Non-Destructive Testing in Civil Engineering CY - Berlin, Germany DA - 15.09.2015 KW - RFID based sensors KW - Embedded sensors KW - Structural health monitoring KW - Concrete condition monitoring PY - 2015 AN - OPUS4-37626 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Performance-related Evaluation Approach for improved Bridge Deck Pavements T2 - Transport Research Arena Conference CY - Ljubljana, Slovenia DA - 2008-04-21 PY - 2008 AN - OPUS4-18241 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Beton mit Hausmüllverbrennungsasche als Gesteinskörnung T2 - Tagung Aufbereitung und Recycling CY - Freiberg, Germany DA - 2008-11-12 PY - 2008 AN - OPUS4-18277 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Use of municipal solid waste incinerator bottom ash as aggregate concrete N2 - Modern municipal solid waste incinerator plants produce bottom ashes, which are used in building industry, especially as base course in road constructions. Because of a highly sophisticated reprocessing technique, the ashes Show a relatively stable composition, comparatively well defined properties and environmentally relevant Parameters below legal Limits. Due to its chemical and mineralogical characteristics, the bottom ash can in principle be used as Aggregate in the production of normal strength concrete. However, if the ash contains concrete damaging components Recycling becomes problematic. To assess the use of municipal solid waste incinerator bottom ash (MSWI bottom ash) as Aggregate in concrete, different additionally treated ashes were chemical and physical characterised. Furthermore, concrete specimens with bottom ash as aggregates were produced and their Engineering properties were studied. T2 - EGU 2007 European Geosciences Union General Assembly 2007, Symposium Energy, Resources and the Environment ERE8 "Aggregates - the most widely used geological material" CY - Vienna, Austria DA - 15.04.2007 PY - 2007 AN - OPUS4-18949 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herbst, Tristan T1 - Nachhaltiges Bauen mit Beton - Einsatz sekundärer Gesteinskörnungen N2 - Im Hinblick auf eine nachhaltige Entwicklung sollen nach dem KrW/AbfG der Rohstoffeintrag und der Abfallaustrag in den Lebensphasen eines Bauwerks durch weitgehende Verwertung von Sekundärrohstoffen (Reststoffen) möglichst gering gehalten werden. Ein Einsatz von Reststoffen wie Hausmüllverbrennungsaschen (MV-Aschen) im Betonbau kann potenziell einen wesentlichen Beitrag zur nachhaltigen Entwicklung leisten. T2 - 17. IBAUSIL CY - Weimar, Germany DA - 23.09.2009 PY - 2009 AN - OPUS4-19731 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eichhorn, Michael A1 - Kühne, Hans-Carsten A1 - Meng, Birgit T1 - Performance-Verbesserung bei Betonwerksteinen durch multi-funktionelle Nano-Additive T2 - 17. Internatiole Baustofftagung "ibausil" CY - Weimar, Germany DA - 2009-09-23 PY - 2009 AN - OPUS4-19556 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Offenporiger Asphalt - Porenstrukturanalyse - Untersuchungsergebnisse zur quantitativen Strukturaufklärung T2 - Abschlussveranstaltung zum Forschungs-Verbundprojekt "Leiser Straßenverkehr" CY - Berlin, Germany DA - 2009-09-02 PY - 2009 AN - OPUS4-19777 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bahr, Horst T1 - Burning asphalt - a fire risk in tunnel fires? T2 - FRPM'09 12th European Meeting on Fire Retardant Polymers CY - Poznan, Poland DA - 2009-08-31 PY - 2009 AN - OPUS4-19856 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bahlmann, Stefanie T1 - Untersuchungen zur Verwertung industrieller Reststoffe als Rohstoffsubstitut in Mörtel und Beton T2 - 17. Internationale Baustofftagung IBAUSIL 2009 CY - Weimar, Germany DA - 23.09.2009 PY - 2009 AN - OPUS4-19886 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bürgisser, Philip T1 - Der Einfluss von natürlichen Puzzolanen vulkanischen Ursprungs auf die Alkali-Kieselsäurereaktion (AKR) im Beton T2 - 17. ibausil Internationale Baustofftagung CY - Weimar, Germany DA - 2009-09-23 PY - 2009 AN - OPUS4-20175 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stähler, S. T1 - Monitoring Stress Changes in a Concrete Bridge with Acoustic Waves T2 - American Geophysical Union (AGU) Fall Meeting CY - San Francisco, CA, USA DA - 2009-12-14 PY - 2009 AN - OPUS4-20839 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias A1 - Strangfeld, Christoph T1 - RFID sensor systems embedded in concrete – systematical investigation of the transmission characteristics N2 - Long-term completely embedded sensor systems offer innovative possibilities for structural health Monitoring of concrete structures. Measuring of relevant parameters, e.g., temperature, humidity, or indication of corrosion can be performed with low energy sensors. This allows to implement passive RFID sensor systems without cable connection and battery, which are power supplied exclusively by the electromagnetic field from the external Reader device. To evaluate characteristics and conditions of this concept, a systematical Investigation of the transmission characteristics with variation of relevant parameters, as communication frequency, installation depth, type of concrete, moisture content, etc. is currently carried out in an interdisciplinary research project at BAM. First results are presented in this paper. T2 - 8th European Workshop On Structural Health Monitoring CY - Bilbao, Spain DA - 05.07.2016 KW - Embedded sensor KW - Energy harvesting KW - Wireless sensors KW - RFID sensors KW - Transmission characteristics KW - Structural health monitoring PY - 2016 AN - OPUS4-37130 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hirsch, Philipp Daniel T1 - Innovative Ansätze der automatisierten Laserthermografie in industrienaher Anwendung N2 - Die Kombination aus aktiver Thermografie und Robotik eröffnet neue Möglichkeiten für die automatisierte zerstörungsfreie Prüfung (ZfP) komplexer Bauteilgeometrien. In einem modular aufgebauten Prüfsystem kommen ein Faserlaser zur gezielten thermischen Anregung, ein Industrieroboter zur präzisen Positionierung sowie eine gekühlte IR-Kamera und weitere Sensorik zur Datenerfassung zum Einsatz. Im Zentrum der entwickelten Methode stehen vier wesentliche Komponenten: Erstens ermöglicht der Robotereinsatz eine hochpräzise und wiederholbare thermografische Inspektion entlang frei definierbarer Prüfpfade. Zweitens wird mithilfe einer Ulbricht-Kugel die ortsaufgelöste Emissionsgradkorrektur nicht-homogener Oberflächen durchgeführt – ein entscheidender Schritt für die quantitative Auswertung thermischer Signale. Drittens erhöht die Kombination von Infrarot- und VIS-Bilddaten die Sensitivität der Defekterkennung, insbesondere bei der Erkennung von Kanten und Strukturen. Viertens erlaubt die Integration eines 3D-Scanners die automatisierte Bahnplanung auf Basis von Punktwolken. Dadurch lassen sich komplexe Prüfteile flexibel erfassen, ohne aufwendige Vorrichtungen oder manuelle Vorpositionierung. Zusätzlich ermöglicht der Vergleich mit der Sollgeometrie eine Detektion geometrischer Abweichungen oder Verformungen. Das Gesamtsystem erlaubt eine vollständig automatisierte, anpassbare und hochsensitive Prüfung verschiedenster Bauteile. Die vorgestellte Kombination aus robotergestützter Thermografie, Emissionskorrektur, multispektraler Bildverarbeitung und intelligenter Bahnplanung stellt eine vielversprechende Lösung für ZfP-Anwendungen im industriellen Umfeld dar. Die Ergebnisse unterstreichen das Potenzial dieser Technologie als vielseitig einsetzbares, skalierbares Prüfverfahren. T2 - Jahrestagung der Deutschen Gesellschaft für Zerstörungsfreie Prüfung (DGZfP) 2025 CY - Berlin, Germany DA - 26.05.2025 KW - Robotik KW - Laserthermografie KW - Emissionskorrektur KW - Multispektrale Bildverarbeitung KW - 3D-Bahnplanung KW - Automatisierte ZfP PY - 2025 UR - https://www.ndt.net/?id=31260 AN - OPUS4-63249 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lu, Xin T1 - Polarization diversity detection based wavelength scanning coherent optical time domain reflectometry N2 - Although wavelength scanning coherent optical time-domain reflectometry (WS-COTDR) system is immune to fading effect, it suffers from occasional and localized large errors caused by the false peak in the correlation spectrum due to the large signal generated in the random interference of the backscattered light. Polarization diversity detection is applied to a standard WS-COTDR system to suppress large measurement errors. In this way, the orthogonally polarized components of backscattered light can be obtained and processed separately. Due to the birefringence of the sensing fiber, the components experience different interference processes, so the average of their correlation spectrum can suppress the false peaks and finally reduce the occurrence of larger errors. The effectiveness of the proposed method is validated in laboratory for monitoring of sinusoidal vibrations and in field for tracking the bus movement via a dark fiber. T2 - 29th International Conference on Optical Fiber Sensors CY - Porto, Portugal DA - 26.05.2025 KW - Coherent optical time domain reflectometry KW - Traffic monitoring KW - Polarization diversity detection KW - Distributed fiber sensing PY - 2025 AN - OPUS4-63260 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maultzsch, Matthias A1 - Kühne, Hans-Carsten T1 - Entwicklung von Betonen mit geringer Festigkeit für die Beurteilung von Instandsetzungssystemen im Wasserbau N2 - Die Regelwerke (RL SIB, ZTV-ING) setzen für die Instandsetzung mit Betoninstandsetzungssystemen vergleichsweise hochwertige Betonuntergründe voraus. Speziell bei älterenWasserbauwerken sind oftmals nur geringerfeste Betonuntergründe vorhanden für die es bis jetzt keine geeigneten und geprüften Instandsetzungssysteme gab. Grundlage für die Entwicklung solcher Systeme sind entsprechende Referenzbetone als Untergrundbeton für die Verbundkörperprüfung. T2 - Wissenschaftsrat CY - Berlin, Germany DA - 17.01.2006 PY - 2006 AN - OPUS4-12028 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühne, Hans-Carsten T1 - Abschätzung der Druckfestigkeit von hochfestem Beton mit dem Rückprallhammer N2 - Ziel der Untersuchungen war es, herauszufinden ob die Druckfestigkeit hochfester Betone zerstörungsfrei mit dem Rückprallhammer PROCEQEQUOSCHMIDT durch Ermittlung des klassischen Rückprallwerts R in Kombination, mit einem aus der Untersuchung von Metallen bekannten neuen Messwert L mit ausreichender Sicherheit beschrieben werden kann. T2 - Wissenschaftsrat CY - Berlin, Germany DA - 17.02.2006 PY - 2006 AN - OPUS4-12029 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Alterungsverhalten von Fugenfüllsystemen in Verkehrsflächen - Performance-orientierte Stoffkennzeichnung - T2 - Wissenschaftsrat - Ergebnispräsentation bei Auftraggeber und Betreuungsgremium CY - Berlin, Germany DA - 2006-01-17 PY - 2006 AN - OPUS4-12025 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Urs A1 - Kühne, Hans-Carsten A1 - Fontana, Patrick T1 - Eigenschaften von wärmebehandltem ultra-hochfestem Beton (UHPC) T2 - Wissenschaftsrat CY - Berlin, Germany DA - 2006-01-17 PY - 2006 AN - OPUS4-12026 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Dirk A1 - Recknagel, Christoph T1 - Einfluss einer Anti-Graffiti-Beschichtung auf Polysaccharidbasis auf das Verhalten und das Gefüge von Cottaer Sandstein T2 - Präsentation der Arbeiten der Fachgruppe VII.1, BAM CY - Berlin, Germany DA - 2001-09-24 PY - 2001 AN - OPUS4-12481 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Determination of trace impurities in pure copper using LA-ICP-MS T2 - 8th European Workshop on Laser Ablation in Elemental Analysis CY - Zurich, Switzerland DA - 2006-07-19 PY - 2006 AN - OPUS4-12575 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühne, Hans-Carsten A1 - Müller, Urs T1 - Properties of heat and steam cured ultra high performance concrete T2 - BAM-Präsentation Nanocem Conference CY - Copenhagen, Denmark DA - 2006-04-25 PY - 2006 AN - OPUS4-12474 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - Charakterisierung der Porenstruktur von ultrahochfestem Beton N2 - Ultrahochfeste Betone (UHPC) sind durch Druckfestigkeiten > 150 MPa und eine besonders hohe Dauerhaftigkeit gekennzeichnet. Ihre Herstellung gelingt durch die Optimierung der Mischungszusammensetzung, des Mischprozesses und der Nachbehandlung. Maßnahmen dazu bestehen in der Verwendung feinstgemahlener Zemente, puzzolanischer und inerter Feinststoffe, dem Einsatz gezielt ausgewählter grober und feiner Gesteinskörnungen, der Reduktion des Wasser/Bindemittel-Wertes bei Zugabe von Fließmitteln auf Polycarboxylat-Basis sowie einer Wärmebehandlung der Betone. Das Ziel dabei ist es, eine möglichst hohe Packungsdichte in der Bindemittelmatrix bei Ausbildung einer sehr gleichmäßigen und extrem dichten Gefügestruktur mit einem hohen Anteil an Calciumsilicathydrat-Phasen zu erreichen. Deshalb sind Untersuchungen zur Porosität und Porenstruktur ein wichtiger Bestandteil zur Materialcharakterisierung im Rahmen der Mischungsoptimierung. Die Ergebnisse der Mikrostrukturuntersuchungen werden im Vergleich zu denen an einem hochfesten Beton und einem Normalbeton betrachtet. T2 - XIII. Workshop über die Charakterisierung von feinteiligen und porösen Festkörpern CY - Bad Soden, Germany DA - 14.11.2006 PY - 2006 AN - OPUS4-14010 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Christoph T1 - Bildgebende Analyse von offenporigen Asphalten T2 - Halbzeit-Kolloquium des Verbundvorhabens "Leiser Straßenverkehr - Teil 2" in der BASt CY - Bergisch Gladbach, Germany DA - 2006-11-21 PY - 2006 AN - OPUS4-14129 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Renate A1 - Weise, Frank A1 - Pirskawetz, Stephan T1 - Numerische Simulation von Heat-Island-Phänomenen an innerstädtischen Straßenbelägen in Nagoya - Extreme Winterrandbedingungen T2 - Hannover-Messe 2007 (PST-Fraunhofer Patentstelle für die Deutsche Forschung) CY - Hanover, Germany DA - 16.04.2007 PY - 2007 AN - OPUS4-14673 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Renate A1 - Weise, Frank A1 - Pirskawetz, Stephan T1 - Numerische Simulation von Heat-Island-Phänomenen an innerstädtischen Straßenbelägen in Nagoya - Extreme Sommerrandbedingungen T2 - Hannover-Messe 2007 (PST-Fraunhofer Patentstelle für die Deutsche Forschung) CY - Hanover, Germany DA - 16.04.2007 PY - 2007 AN - OPUS4-14671 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weise, Frank T1 - Neuer Asphaltstraßenbelag für Japan zur Minderung von Heat-Island-Problemen T2 - Hannover-Messe 2007 CY - Hanover, Germany DA - 16.04.2007 PY - 2007 AN - OPUS4-14653 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weise, Frank T1 - Neuartige thermomechanische Systemprüfung von Asphaltstraßenbelägen T2 - Hannover-Messe 2007 (PST-Fraunhofer Patentstelle für die Deutsche Forschung) CY - Hanover, Germany DA - 16.04.2007 PY - 2007 AN - OPUS4-14654 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bahlmann, Stefanie T1 - Untersuchungen zur Verwertung industrieller Reststoffe als Primärrohstoffsubstitut in Mörtel und Beton T2 - Tagung Bauchemie, Veranstalter Gesellschaft Deutsche Chemiker (GDCH) CY - Siegen, Germany DA - 2007-09-27 PY - 2007 N1 - Geburtsname von Bahlmann, Stefanie: Ramolla, S. - Birth name of Bahlmann, Stefanie: Ramolla, S. AN - OPUS4-14788 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Goebbels, Jürgen T1 - Leiser Straßenverkehr: Charakterisierung von offenporigem Asphalt mit Computertomographie T2 - DGZfP Jahrestagung 2007 CY - Fürth, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-14832 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ünal, Murat A1 - Kleine, M. T1 - Entwicklung von Betonergänzungsmassen und Instandsetzungsprinzipien zur Restaurierung von Betonglasfenstern des 20. Jahrhunderts T2 - Stained Glass After 1920: Technology and Conservation Forum for the Conservation of Stained-Glass Windows CY - Lisbon, Portugal DA - 2011-09-26 PY - 2011 AN - OPUS4-24732 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maack, Stefan T1 - 3D Schallfeldcharakterisierung niederfrequenter Ultraschall-Prüfköpfe in Beton - Experimentelle Untersuchungen und Simulation T2 - DGZfP Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-24765 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterhus, Lennart T1 - Kieselsäurehaltiger Filterrückstand aus industrieller Abwasserbehandlung für den Einsatz als hydraulisches Bindemittel N2 - - 5.000 bis 10.000 t wasserhaltiger Filterrückstand (FR) entstehen jährlich pro Produzent bei der Neutralisation der Abwässer aus der Silicon- oder Kieselsäureherstellung - Anfall als fester, feuchter, schollenartiger Filterkuchen - Verwertung heute: Deponierung, Tagebauverfüllung -> ungenutzte Sekundärrohstoffquelle - Untersuchung der Einsatzmöglichkeiten der aufbereiteten Filterrückstände zur Eigenschaftsverbesserung zementgebundener Baustoffe analog der wohlbekannten Anwendung von hochdisperser Kieselsäure und Silicastaub T2 - GDCh-Tagung Bauchemie CY - Hamburg, Germany DA - 06.10.2011 PY - 2011 AN - OPUS4-24819 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herbst, Tristan T1 - Integrated and holistic suitability assessment of recycling options for masonry rubble N2 - Behandelt den Bausektor und die Verarbeitsungsqualität T2 - European Geosciences Union (EGU) General Assembly 2012 CY - Vienna, Austria DA - 22.04.2012 PY - 2012 AN - OPUS4-25868 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knaust, Christian T1 - Prediction of the temperature evolution in a tunnel construction in case of fire, by coupling the temperature-dependent heat transfer mechanisms inside the structural components at their surface T2 - 5th International Symposium on Tunnel Safety and Security CY - New York City, NY, USA DA - 2012-03-14 PY - 2012 AN - OPUS4-25626 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herbst, Tristan T1 - Verwertung kieselsäurehaltiger Filterrückstände in mineralischen Baustoffen N2 - - jährlicher Anfall von 5.000 bzw. 10.000 Tonnen wasserhaltiger Filterrückstände (FR) pro Produzent bei der Abwasser-Neutralisation aus der Kieselsäure- bzw. Chlorsilanherstellung (FR1, FR2) - heute: Deponierung, Tagebauverfüllung - ungenutzte Sekundärrohstoffquelle - Untersuchung möglicher Anwendungsbereiche für FR T2 - GDCh Tagung Bauchemie CY - Dübendorf, Switzerland DA - 11.10.2012 PY - 2012 AN - OPUS4-26673 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oesch, Tyler T1 - In-situ analysis of water transport in concrete completed using X-ray computed tomography N2 - The water-transport characteristics of concrete have a major impact on its resistance to damaging chemical processes such as Alkali-Silica-Reaction (ASR). Water transport in samples of damaged and undamaged concrete was measured using in-situ CT. The resulting measurements of water-front movement relative to time and the change in 3D-moisture distribution within the samples, are needed for calibration and validation of water-transport numerical models. T2 - 3rd International Conference on Tomography of Materials and Structures CY - Lund, Sweden DA - 26.06.2017 KW - X-ray computed tomography (CT) KW - In situ KW - Water transport KW - Alkali-silica-reaction (ASR) PY - 2017 AN - OPUS4-40876 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Makris, Ruben T1 - Crack Luminescence as innovative method for detection of fatigue damage N2 - Conventional methods of crack detection only provide a snapshot of the fatigue evolution at a specific location and in the moment of examination. The crack luminescence method realizes a clear visibility of the occurring cracks in loaded components during ongoing operation. Several different experiments show that due to the sensitive coating even the early stage of the crack formation can be detected what makes the crack luminescence helpful to determine the incipient crack opening behavior depending on load alternation. Due to the emitting of light under UV-radiation the crack gets clearly visible what makes continuous monitoring and automated crack detection possible. This can reduce costs and time needed for maintenance and inspection. T2 - Sensor +Test 2017 CY - Nuremberg, Germany DA - 30.05.2017 KW - Fatigue damage KW - Crack KW - Luminescence KW - Detection PY - 2017 AN - OPUS4-41839 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kruschwitz, Sabine T1 - Junior Research Group Materials Characterization and Informatics for Sustainability in Civil Engeneering (CE) N2 - Vorstellung der Themen der Nachwuchsgruppe "Materialcharakterisierung und -informatik für die Nachhaltigkeit im Bauwesen" von Prof. Sabine Kruschwitz (TU Berlin und BAM) T2 - Themenkonferenz Nachhaltiges Bauen CY - Berlin, Germany DA - 08.12.2022 KW - Recycling KW - NMR KW - Materialcharakterisierung KW - Data Science PY - 2022 AN - OPUS4-56648 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. A1 - Bartholmai, Matthias T1 - Towards Autonomous NDT Inspection: Setup and Validation of an Indoor Localization System N2 - Monitoring and maintenance of civil infrastructure are of great importance, as any undetected damage can cause high repair costs, unintended deadtime, or endanger structural integrity. The inspection of large concrete structures such as bridges and parking lots is particularly challenging and time-consuming. Traditional methods are mostly manual and involve mapping a grid of measurement lines to record the position of each measurement. Current semi-automated methods, on the other hand, use GPS or tachymeters for localization but still require trained personnel to operate. An entirely automated approach using mobile robots would be more cost- and time-efficient. While there have been developments in using GPS-enabled mobile robots for bridge inspection, the weak signal strength in indoor areas poses a challenge for the automated inspection of structures such as parking lots. This paper aims to develop a solution for the automated inspection of large indoor concrete structures by addressing the problem of robot localization in indoor spaces and the automated measurement of concrete cover and rebar detection. T2 - 39th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Siófok, Hungary DA - 26.09.2023 KW - NDT Inspection KW - Mobile Robot KW - Indoor Localization KW - Setup and Validation PY - 2023 AN - OPUS4-58662 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Jörg F. T1 - Complex constitutive models in standards N2 - The development of standards that include simulation models is often based on heuristics that include experimental data that is used to calibrate and validate the simulation models. However, these data and the corresponding calibration procedures are usually not part of the publicly accessible documentation making it very difficult to identify gaps in the current standard or extend it to new innovative solutions. The poster shows an adapted procedure that integrates the complete process into a database and a workflow to be published alongside the standard. T2 - NFDI4Ing Gesamtteamtreffen 2024 CY - Hannover, Germany DA - 09.04.2024 KW - Complex constitutive models KW - FAIR Implementation KW - 3D-concrete printing PY - 2024 AN - OPUS4-60043 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strangfeld, Christoph T1 - Zustandsermittlung von Spannbetonschwellen N2 - -Über 80 Mio. Schwellen im deutschen Schienennetz verbaut -Lebensdauer einer Schwelle beträgt ca. 20 bis 50 Jahre -Über 2 Mio. Schwellen werden jährlich ausgetauscht, obwohl die Mehrzahl noch intakt ist -Zustandsbewertung mittels ZfP kann Ausschuss verringern -Schadhafte Schwellen könnten mittels ZfP frühzeitig im Gleis erkannt werden, um Gefahren und Unfälle abzuwenden T2 - DZSF - Rissdetektion Spannbetonschwellen - Meilensteinpräsentation Arbeitspakete B.1 und C.1 CY - Dresden, Germany DA - 23.04.2024 KW - Spannbetonschwellen KW - Zerstörungsfreie Prüfung KW - Ultraschallverfahren KW - Zustandsermittlung PY - 2024 AN - OPUS4-59928 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hirsch, T. T1 - Impact of autoclaving on the phase assemblage of Portland cement: Experiment and thermodynamic modelling N2 - Even after autoclaving for 2 weeks in the temperature range of 120 to 200 °C, CEM I paste with a water-to-cement ratio of 0.5 still contains some low-crystalline C-S-H. The conversion of low-crystalline C-S-H to crystalline is faster with increasing temperature. The observed low-crystalline and crystalline C-S-H phases (reinhardbraunsite, jaffeite) indicate that the samples have not reached equilibrium yet under these experimental conditions. However, there is a good agreement between experiment and thermodynamic modelling for the other solids indicating that the used datasets are suitable for this application. T2 - 16th International Congress on the Chemistry of cement 2023 - ICCC2023 CY - Bangkok, Thailand DA - 18.09.2023 KW - Zement KW - Thermodynamik KW - Phasenzusammensetzung KW - Mineralogie KW - Modellierung PY - 2023 UR - https://iccc2023.org AN - OPUS4-58967 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Lena T1 - From status quo to first perspectives of laboratories in a digital quality infrastructure N2 - The future of an efficient quality infrastructure (QI) will depend not only on suitable digital tools but also on well-equipped laboratories. An international study conducted by BAM reveals significant variation in digitalization among Germany's conformity assessment bodies (https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/59765). While laboratories see digitalization as an opportunity, most are still in the early stages of digital maturity, facing challenges such as: complexity, costs, staff, and lack of uniform interfaces and standards. To better understand expectations, needs, and experiences, QI-Digital held workshops with over 100 participants and first results are available in this publication. This ongoing dialogue is vital to ensuring that digital QI evolves in a way that is both practical and aligned with the dynamic needs of the industry. As laboratories navigate the diverse challenges of innovation, digital transformation becomes not just an option, but a powerful opportunity to stay ahead in a market that thrives on new, innovative, and digitally driven competitors. T2 - Materials Science and Engineering Congress 2024 CY - Darmstadt, Germany DA - 24.09.2024 KW - Digital Transformation KW - Quality Infrastructure KW - Conformity Assessment KW - Accreditation KW - Quality Assurance PY - 2024 AN - OPUS4-61127 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiz Eddin, Ahmad T1 - Innovative lightweight floors made of prestressed CFRP-reinforced concrete from research to construction practice N2 - The presented joint research project “CaPreFloor”, which started in 2023, aims to revolutionise the building construction practice by employing prestressed textile-reinforced concrete using carbon-fiber-reinforced polymer (CFRP) for the design of lightweight floor elements. This allows the reduction of common steel reinforced concrete floors of 30 cm thickness to 10 cm for office, residential, and hotel buildings. Lower material consumption significantly contributes to the conservation of resources and minimises the carbon footprint. In addition, the prefabrication of these floor elements leads to high and consistent quality, short construction times and enhanced reusability of the components. A team of experts from various fields of research and practice is working on this project to achieve the set goal. T2 - XI International Symposium on Fiber Reinforced Concrete (Befib 2024) CY - Dresden, Germany DA - 16.09.2024 KW - Fire Resistance KW - Sound protection KW - Ceiling KW - Concrete KW - CFRP PY - 2024 AN - OPUS4-61126 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckmann, Jörg T1 - Einfluss von Metall - Speicherfolien - Kombinationen auf die Bildqualität in der Computer-Radiographie T2 - DGZfP-DACH-Jahrestagung 2008 CY - St. Gallen, Switzerland DA - 2008-04-28 PY - 2008 AN - OPUS4-18387 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schwibbert, Karin T1 - Ectoine Degradation in Halomonas elongata T2 - Jahrestagung 2009 der Vereinigung für allgemeine und angewandte Mikrobiologie (VAAM) CY - Bochum, Germany DA - 2009-03-08 PY - 2009 AN - OPUS4-19081 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bellon, Carsten T1 - Simulation of Complex Scan Paths for 3D Reconstruction T2 - International Symposium on Digital Industrial Radiology and Computed Tomography CY - Berlin, Germany DA - 2011-06-20 PY - 2011 AN - OPUS4-24383 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sabel, Martin T1 - SEM investigations of biofilms: Environmental-SEM vs. sample drying and low temperature SEM T2 - Microscopy Conference 2011 CY - Kiel, Germany DA - 2011-08-28 PY - 2011 AN - OPUS4-24378 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schwibbert, Karin T1 - Vom Genom zum Produkt: Industielle Produktion von Zellschutzstoffen mit salzliebenden Bakterien T2 - Life Science Day - Zukunftsort Dahlem CY - Berlin, Germany DA - 2011-08-26 PY - 2011 AN - OPUS4-25333 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Razkin Bartolomé, Malen T1 - Bacterial adhesion on fs-laser processed laser-induced periodic surface structures N2 - Bacteria are ubiquitous and colonize all types of surfaces, including those in close proximity to humans, such as skin, food, and everyday objects. This raises the question of whether their presence represents a problem to be mitigated or a potential source of benefit to be harnessed, thereby stimulating scientific inquiry into the role of surface-associated bacteria in diverse domains ranging fromhuman health to industrial biotechnology. Aim: The objective of this project is to explore the impact of modifying surface topography on bacterial adhesion behavior. By manipulating the physical characteristics of the substrate, the attachment and detachment dynamics of bacteria can potentially be modified, leading to novel strategies for controlling bacterial colonization in various applications, such as medical devices. Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) were tested on LIPSS-covered Fused Silica samples. T2 - 2023 Spring Meeting · , 2023 · Strasbourg CY - Strasbourg, France DA - 29.05.2023 KW - LIPSS KW - Biofilm KW - fs-laser processing PY - 2023 AN - OPUS4-58456 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonse, Jörn T1 - Impact of laser-induced periodic surface structures on the bactericidal properties of copper and brass N2 - Surfaces of metallic copper and copper alloys effectively inactivate microorganisms and viruses. However, the exact inactivation mode is still under debate. Main factors are assumed to include direct contact with the metallic surface, influx of Cu(I)/Cu(II) ions and the generation of reactive oxygen species (ROS). Laser-induced periodic surface structures (LIPSS) are frequently reported to act antibacterial, mainly by prevention of bacterial adhesion due to a limited number of possible adhesion points or by increasing the overall surface of intrinsically antibacterial materials. In time-kill experiments with E. coli and S. aureus we analyzed the impact of LIPSS on the toxicity of metallic copper and brass. We also conducted ROS accumulation assays and conclude that the application of LIPSS is not generally straight forward to obtain or improve antibacterial surfaces. Thus, the antibacterial effects of LIPPS. T2 - 2023 Spring Meeting CY - Strasbourg, France DA - 29.05.2023 KW - LIPSS KW - Antimicrobial KW - Reactive oxygen species PY - 2023 AN - OPUS4-58465 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bellon, Carsten T1 - Virtual CT with aRTist N2 - The software aRTist is a simulation tool for the generation of realistic radiographs of virtual radiographic superstructures. With radiographic simulations, virtual component models can be scanned as in a computer tomograph. Industrial X-ray computed tomography (CT) enables the non-destructive detection of internal and external surfaces as well as inhomogeneities of technical objects. Virtual CT offers new possibilities for the investigation of parameter influences of this complex testing and measuring technique. In addition to the option of switching physical effects on and off, scanning movements can also be tested before their technical realization. The virtual CT generates projection images from different directions for the subsequent reconstruction of a volume model of the examined object. The reconstruction of the simulated scans is carried out with the algorithms and programs for real scans. Tomographic scans consist of a large number of projections, which practically cannot be generated individually by the user of a simulation. The software offers various options for the automated simulation of tomographic scans. These range from standard CT to scans on free trajectories or with individual projection matrices. T2 - 12th Conference on Industrial Computed Tomography (iCT) 2023 CY - Fürth, Germany DA - 27.02.2023 KW - X-ray computed tomography KW - Simulation PY - 2023 AN - OPUS4-58919 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bellon, Carsten T1 - CTSimU — Durchstrahlungssimulation für die Messunsicherheitsbestimmung beim Messen geometrischer Merkmale mittels Röntgen- Computertomographie N2 - Die industrielle Röntgen-Computertomographie (CT) ist in der geometrischen Messtechnik die einzige Technologie, die sowohl innen- als auch außenliegende Merkmale eines Werkstücks mit einer Messung zerstörungsfrei messen kann. Die Güte der Messung kann mittels einer dem Messwert beigeordneten Messunsicherheit angegeben werden. Allerdings sind zur Ermittlung der Messunsicherheit für eine Messgröße einer CT-Messung nach Stand der Technik (VDI/VDE 2630 Blatt 2.1) zwanzig Wiederholmessungen an kalibrierten Werkstücken notwendig. Da die Messung mit realen CT-Messgeräten zeit- und kostenintensiv ist, wird analog zur taktilen Koordinatenmesstechnik eine numerische Messunsicherheitsbestimmung durch Simulation angestrebt (vgl. VDI/VDE 2617 Blatt 7, GUM Supplement 1). Die Simulation bietet den Vorteil, dass sie sowohl zeitsparend als auch kosten- und ressourceneffizient ist. Allerdings ist die Zuverlässigkeit der verschiedenen Simulationsumgebungen momentan nicht quantifizierbar. Für eine glaubwürdige Anwendung von Simulationsumgebungen für die Messunsicherheitsbestimmung benötigen Anwender eine Beurteilung derselben – auch um eine Norm- bzw. Richtliniensicherheit in der Praxis sicherzustellen. Das Ziel dieses Projekts ist es daher, einen Richtlinienentwurf VDI/VDE 2630 Blatt 2.2 „Basisqualifizierung von Softwaresystemen für die Simulation geometrischer Messungen mit Röntgen-Computertomografie“ zu erstellen. Auf dieser Basis soll es möglich sein, die Eignung von Simulationsumgebungen zur Ermittlung der aufgabenspezifischen Messunsicherheit zu bewerten. Dazu wird ein Testframework entwickelt, mit welchem Durchstrahlungssimulationssoftwares basisqualifiziert werden können. Das Projekt wird in der Förderrichtlinie WIPANO durch das Bundesministerium für Wirtschaft und Energie gefördert. T2 - DGZfP-Jahrestagung 2021 CY - Online meeting DA - 10.05.2021 KW - Computertomographie Simulation PY - 2021 AN - OPUS4-52753 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Deresch, Andreas T1 - Radiographic Simulator aRTist: Version 2 T2 - 18th WCNDT - World conference on nondestructive testing (2012) CY - Durban, South Africa DA - 2012-04-16 PY - 2012 AN - OPUS4-29191 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gorbushina, Anna T1 - Bacterial Attachment to Poly[acrylonitrile-co-(2-methyl-2-propene-1-sulfonic acid)] T2 - MRS Spring Meeting & Exhibit 2013, Symposium NN: Multifunctional Biomaterials CY - San Francisco, CA, USA DA - 2013-04-01 PY - 2013 AN - OPUS4-28899 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bellon, Carsten T1 - Zuverlässigkeit radiografischer Prüfungen und Simulationen T2 - DGZfP-Jahrestagung 2013 CY - Dresden, Germany DA - 2013-05-06 PY - 2013 AN - OPUS4-29751 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Computertomographie für die Erhaltung von Kulturgütern aus Holz T2 - DGZfP Jahrestagung 2014 CY - Potsdam, Germany DA - 2014-05-26 PY - 2014 AN - OPUS4-31152 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Osterloh, Kurt T1 - Computed Tomography with X-rays and Fast Neutrons for Restoration of Wooden Artwork T2 - 10th World Conference on Neutron Radiography CY - Grindelwald, Switzerland DA - 2014-10-05 PY - 2014 AN - OPUS4-32241 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bellon, Carsten T1 - Durchstrahlungssimulation mit aRTist - Kombination von analytischen und Monte-Carlo-Methoden T2 - DACH-Jahrestagung 2015 CY - Salzburg, Austria DA - 2015-05-11 PY - 2015 AN - OPUS4-33586 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bellon, Carsten T1 - Radiography simulation with aRTist - combining analytical and Monte-Carlo methods T2 - Digital Industrial Radiology and Computed Tomography (DIR 2015) CY - Ghent, Belgium DA - 2015-06-22 PY - 2015 AN - OPUS4-33595 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wan, Wei T1 - Use fluorogenic Molecularly imprinted particles to detect phosphate anion on the microfluidic chips N2 - The exploration of new material and technique in the past half century has greatly improved our life quality but also brings threats like environmental pollution and desease. The monitoring of these harmful species is especially important for us human being and the planet we live. However, the traditional laboratory based assay is a complicate process including sample preparation, detection and data analysis. The onsite detection as well as point of care (POC) diagnostic are often limited by the dimension of large instrument and required trained people. In order to address these problems, we combined the sensor particle with the microfluidic chip technique for the potential miniaturized direct readout sensor instrument for onsite detection. MIPs are artificial receptors which are formed by polymerization of functional monomer at the presence of target molecule as template. They have comparable binding affinity and selectivity to the nature receptor such as anbibody and enzyme. However they are more stable and robust which greatly reduced the difficulty in storage and usage. The thermal and chemical stability also extends its application to more harsh conditions. Combined with core coding technique, they can also combine with fluidic assay for much higher throughout. We have developed a fluorogenic sensor particle which is formed by a thin fluorogenic molecularly imprinted polymer (fMIPs) shell of several nanometer coated onto a silica particle as core-substrate. These particles can respond to the molecule such as phosphorylated tyrosine through change of fluorescence signals and show high selectivity, sensitivity and fast response within 20 seconds. The phosphate anion is especially interesting due to its important role in industry as well as in biological processes. In order to make it applicable for on-site monitoring, we combined this fMIPs with a microfluidic chips. With carefully design, the particle can essentially mixed with the sample in the microfluidic chip. The excitation of sensor particle can be enabled by a LED, the fluorescence difference can then directly been registered with a spectrometer for qualification as well quantification the monitored species. The compact structure make the on-site as well as POC achievable. T2 - 12. Dresdner Sensor-Symposium CY - Dresden, Germany DA - 2015-12-07 PY - 2015 AN - OPUS4-35237 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Conradi, Bianca T1 - Monitoring of initial colonization of bacteria on implant materials under standardized conditions T2 - DGBM Jahrestagung 2013 CY - Erlangen DA - 2013-09-26 PY - 2013 AN - OPUS4-35163 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina A1 - Tillack, Gerd-Rüdiger A1 - Bellon, Carsten A1 - Scharmach, Martina T1 - Wie kann man den Einfluß der industriellen Anwendungsfaktoren innerhalb der ZfP-Zuverlaessigkeitsformel messen? N2 - Dieses Poster beschäftigt sich mit der Zuverlässigkeitsformel und der Metrik für die Messung der Zuverlässigkeit T2 - DGZfP Jahrestagung 2000 CY - Innsbruck, Austria DA - 29.05.2000 KW - Anwendungszuverlässigkeit KW - Anwendungsparameter KW - ZfP-System PY - 2000 PB - Bundesanstalt für Materialforschung und -prüfung (BAM) CY - Berlin AN - OPUS4-35849 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epperlein, Nadja T1 - Influence of femtosecond laser produced nanostructures on biofilm growth on steel N2 - Large area periodic surface structures were generated on steel surfaces using 30-fs laser pulses at 790 nm wavelength. Two types of steel exhibiting a different corrosion resistance were used, i.e. a plain structural steel (corrodible) and a stainless steel (resistant to corrosion). Homogeneous fields of laser-induced periodic surface structures (LIPSS) were realized utilizing laser fluences close to the ablation threshold while scanning the sample under the focused laser beam in a multi-pulse regime. The nanostructures were characterized with optical and scanning electron microscopy. For each type of steel, more than ten dentical samples were laser-processed. These samples were subjected to microbial adhesion tests, investigating bacterial adhesion behavior on the laser structures in comparison to polished reference surfaces. Short term experiments (<24h) were carried out to determine initial biofilm development. E. coli as a typical bacterium representing pathogenic bacteria and Shewanella putrefaciens as metal corrosive bacterium were used for biofilm development analyses. Bacterial cell adhesion was determined microscopically after DAPI cell staining (DNA staining). Comparison of the coverage areas between nanostructured and polished surfaces revealed differences in cell adhesion behavior and biofilm structure. T2 - E-MRS 2016 Spring Meeting, Symposium C: "Laser-material interactions for tailoring future applications" CY - Lille, France DA - 02.05.2016 KW - Laser-induced periodic surface structures (LIPSS) KW - Femtosecond laser ablation KW - Biofilms KW - Steel PY - 2016 AN - OPUS4-36045 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bellon, Carsten A1 - Jaenisch, Gerd-Rüdiger T1 - Supercomputing the cascade processes of radiation transport N2 - Modeling of the photon-electron cascade process in multicomponent objects of complex geometrical structure by use of hybrid supercomputers is considered. An approach to computing the cascade processes is developed. The approach has three key properties allowing the effective use of heterogeneous structure of computers for solving the tasks of radiation transport in complex multi-scale geometries. Firstly, two different discreet geometrical description of an object being under radiation is used: triangulated model for photon transport and voxel model for elec-tron transport. Secondly, small parameter of the problem is explicitly taking into ac-count for modeling surface effects (for instance, electron emission). Thirdly, the ef-fective calculation decomposition between CPU and GPU is developed for signifi-cant increasing the speed of calculations of processes in question. Modeling of ex-periment on researching the bremsstrahlung generated by electron beam in Ta target is carried out. Comparison of computing and experimental results shows satisfactory consent. T2 - 19th World Conference on Non-Destructive Testing CY - Munich, Germany DA - 13.06.2016 KW - Modelling KW - Monte Carlo method KW - Photon-electron transport PY - 2016 AN - OPUS4-36608 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gerrits, Ruben T1 - Olivine dissolution by a model consortium: biological impact and analytical methodology considerations N2 - Microbiological biofilms on rocks are ubiquitous in nature and their influence on soil formation through rock weathering has been shown (Gorbushina 2007). However, most previous studies on rock weathering are limited to understanding the physical and chemical aspects overlooking the impact of biota. Due to the enormous amounts of variables that come with a biological process, the quantification of its influence is only possible by using well-controlled and simplified laboratory models. Thereby gaining more insight on the impact of rock inhabiting biofilms on mineral weathering. This presentation will show the impact of biotic weathering in terms of olivine dissolution rates Natural forsterite was incubated in batch reactor flasks with and without a model consortium consisting of the phototrophic cyanobacterium Nostoc punctiforme and the rock-inhabiting ascomycete Knufia petricola, and submerged in a growth solution (pH 6). The flasks were incubated for 30 days under 25°C, 90 µmol photons/m2s and were shaken at 150 rpm. qPCR was performed to quantify the cell number of both organisms, BET to gather the specific surface of the used olivine and ICP-OES to follow up the change of concentration of the leached out metals. Our results show that our model consortium, especially K. petricola does increase the dissolution rate of olivine. The pH increased from the initial 6 to around 7.2 for all setups. Initially Mg was preferentially released over Si (Mg/Si of 3.5), until after two days the ratio starts equilibrating around stoichiometric dissolution. During this timeframe the dissolution rate drops by nearly two orders of magnitude, just as observed by Daval et al., (2011). The difference in dissolution rates between the different setups is initially non-existent, but increases over time. After 30 days the setup with K. petricola gives a dissolution rate of 1.08 10-13 moles/cm2s, compared to 9.23 10-14 moles/cm2s for the abiotic setup. We expect this study to cause awareness on the impact of microbiology on mineral weathering. Additionally it is a starting point for other, more complicated experiments using for instance flow through or drip flow reactors or other minerals. T2 - VAAM CY - Jena, Germany DA - 13.03.2016 KW - Olivine KW - Weathering KW - Biofilm PY - 2016 AN - OPUS4-37971 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stroj, S. T1 - Laser-generated high wetting contrast surfaces for microbiological applications N2 - We demonstrate a 2D platform based on high contrast wetting patterns suitable for miniaturized microbiological assays. In principal, superhydrophilic spots are surrounded by a superhydrophobic surface area. The special structure of the superhydrophilic functional surface ensures that liquids, e.g. bacterial suspensions or biocide solutions, spread immediately and evenly on this surface without passing the wetting boundary. This feature allows a homogenous distribution of bacteria or chemical substances on well defined lateral dimensions. The superhydrophilic spots may also serve as substrate for bacterial biofilms. Due to the high wetting contrast and the fabrication process, it is possible to minimize the test areas as well as their distance to each other. We demonstrate the fabrication process of the high wetting contrast platform and also present a microbiological assay as an application example. Advantages of this platform are the use of low volumes and its potential of automated analysis. T2 - Biointerfaces International Conference CY - Zürich, Austria DA - 14.08.2018 KW - Biofilm KW - Bacterial growth KW - Laser structuring KW - Superhydrophobic surface KW - Superhydrophilic surface PY - 2018 AN - OPUS4-45863 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gollwitzer, Christian T1 - The TomoSynth module for the simulation of complex and noisy scanning trajectories in aRTist N2 - Simulation becomes more and more important in modern CT imaging. It is increasingly used to optimize techniques for complex applications, to support the preparation of written procedures, and for educational purposes. The radiographic simulator aRTist is a modelling tool which simulates X-ray imaging using a hybrid analytical and Monte Carlo method to efficiently model the radiation transport. In addition to the relevant physical effects such as absorption, scattering and fluorescence, simplified fast models are employed to describe the characteristics of the X-ray source and the detector. aRTist is well equipped to model realistic X-ray imaging setups due to the ability to load exported CAD object descriptions. A simple CT scan module is contained in aRTist which allows the simulation of standard (circular cone beam) scanning trajectories. TomoSynth is a module for aRTist which allows to set up more complex scanning trajectories by attaching geometrical modification functions to the objects in the radiographic scene. In this way, advanced scanning modes can be realized, for instance helical CT as an overlay of a rotation and a linear motion, or laminography as a motion of the source point. In addition to deterministic motion, also random variations can be introduced. By combining random variations with deterministic motion, non-ideal (realistic) CT scan geometries can be simulated, e.g. focal spot drift and mechanical instability of the axis of rotation. The TomoSynth module conveniently allows to construct these scenarios in a graphical interface and provides a preview before starting the (potentially long running) batch job. Therefore, deviations from ideal CT scan trajectories can be easily adjusted which is a necessary step towards uncertainty determination from simulation. T2 - dXCT 2018 CY - Nottingham, UK DA - 02.07.2018 KW - Simulation KW - Tomography KW - aRTist KW - X-ray PY - 2018 AN - OPUS4-46428 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Johann, Sergej T1 - Wireless Mobile Sensor Device for in-situ Measurements with Multiple Fluorescent Sensors N2 - This paper describes a wireless mobile prototype able to perform optical measurements by means of a miniaturized spectrometer for low light analysis, e.g. fluorescent sensors. Evaluations, calculations, calibration management and result display are performed by a computer or a standard tablet. The device was designed primarily to detect traces of oil in drinking or ground water and for the analyses of crude oils. However, it can also address a wide range of fluorescent sensors. The fast and user-friendly inspection of water quality or oil properties, as well as the adaptability and mobility, make the device attractive for a variety of users. Further application areas could be easily implemented by adapting the optics and the software (database, data processing and calibration plots, etc.). T2 - IEEE Sensors 2018 CY - New Delhi, India DA - 28.10.2018 KW - Wireless mobile sensor device KW - Fluorescent sensor KW - Embedded system KW - Water quality KW - Oil PY - 2018 AN - OPUS4-46554 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kjaervik, Marit T1 - Exploring the capabilities of NAP-XPS: Application to metal-organic frameworks, nanoparticles and biofilms N2 - Near-ambient pressure XPS makes it possible to characterise samples not compatible to ultra-high vacuum, and enables the study of liquid-solid, gas-liquid and gas-solid interfaces. NAP-XPS meas-urements of biofilms, suspended nanoparticles and metal-organic frameworks were performed with EnviroESCA developed by SPECS. An interesting application is surface characterisation of biofilms, which are bacterial communities embedded in a self-produced polysaccharide matrix. Various model systems ranging from pure polysaccharides of alginate to biofilms harvested directly from the growth medium have been char-acterised in humid conditions[1]. NAP-XPS also makes it possible to characterise nanoparticles in solution. Silver nanoparticles in aqueous solution were characterised and the Ag 3d-spectrum compared to spectra obtained of dried nanoparticles in UHV-conditions[2]. The binding energy of the Ag 3d-core level peak was shifted by 0,6 eV towards higher binding energy for suspended nanoparticles compared to the dried sample measured in UHV. This can be assigned to a change in surface potential at the water-nanoparticle interface. Metal-organic frameworks (MOFs) are suitable materials for gas storage of small molecules due to their nanoporous, crystalline structure. However, instability in humidity remains an issue for many types of MOFs. XPS-measurements of the MOF-structure HKUST-1 were performed in various NAP-conditions to assess the stability of the sample and its interaction with the gas molecules as water, methanol and pyridine. T2 - 5th AP-XPS Workshop CY - Berlin, Germany DA - 11.12.18 KW - Biofilms KW - E. coli KW - NAP-XPS KW - Metal organic frameworks KW - Nanoparticles PY - 2018 AN - OPUS4-47060 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kjaervik, Marit T1 - Depth-dependent analysis of model biofilms by combining laboratory- and synchrotron-based X-ray photoelectron spectroscopy N2 - Synchrotron XPS in the soft-X-ray regime is suitable for the detection of light elements commonly found in biological samples. Various model systems of biofilms have been developed and characterised at synchrotron- and lab-based facilities. By obtaining the chemical composition at various information depths, the vertical distribution of iodine in an artificial biofilm have been determined. T2 - Tenth Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 05.12.2018 KW - Biofilms KW - HAXPES KW - XPS KW - Iodine KW - Synchrotron-XPS PY - 2018 AN - OPUS4-46929 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ebeling, Anna A1 - Zekhnini, Khalid A1 - Ebell, Gino A1 - Pröfrock, Daniel T1 - Offshore Power-to-X and the marine environment-What we know and what we don't know N2 - To combat climate change the share of renewable energy production must increase drastically. Offshore energy production – offshore wind and power-to-X – are crucial to achieving climate targets. However, the impact of these offshore constructions – wind turbines and production platforms – on the marine environment remains unclear in many aspects. Potential sources of chemical emissions are corrosion protection systems, remobilization of contaminants from old sediments during construction, the brine of desalination plants and increased shipping for maintenance and transportation. In order to minimize the environmental impact of renewable energies, close monitoring is essential. The goal of this project is the development of a monitoring concept for an offshore power-to-X production platform. T2 - H2Mare PtX-Verbundtreffen CY - Hamburg, Germany DA - 16.04.2024 KW - Emission KW - Offshore KW - Wind energy KW - Sediment KW - Environment KW - Sea water PY - 2024 AN - OPUS4-59920 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zekhnini, Khalid T1 - Corrosion at metallic offshore constructions – Bundesanstalt für Materialforschung und -prüfung (BAM) N2 - In the maritime context of offshore operation, corrosion, in combination with the materials used, poses a particular challenge to ensure safe operation over long indefinite periods and to minimise susceptibility to failure. Until today, only a few corrosion protection systems have proven themselves for the interaction of efficiency, installation, and maintenance in the offshore sector. In addition, available corrosion test methods sometimes have major deficits about conclusions of the durability. Therefore, there is more research and development needed. The flagship project H2Mare of the Federal Ministry of Education and Research aims to enable the production of green hydrogen and PtX products at high seas. Research is being driven forward by the partners in four individual projects, where BAM is involved in two. In PtX-Wind, major kinds of corrosion attacks at offshore constructions are characterized and investigated, and suitable corrosion protection measures determined. In TransferWind, attention focusses on transferring scientific results into standardization. This poster at the H2Mare Conference 2023 presents an overview of the investigation methods and contribution of the department “Corrosion and Corrosion Protection”. T2 - H2Mare Conference 2023 CY - Frankfurt/Main, Germany DA - 12.06.2023 KW - Atmospheric Corrosion KW - Sea Water KW - Corrosion Testing KW - Offshore KW - Laboratory Container KW - Corrosion protecting system PY - 2023 AN - OPUS4-57838 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauw, Brian Richard T1 - Enhancing your SAXS with interleaved USAXS for less than 50 k€ N2 - A portable, inexpensive module is presented that can enhance good existing SAXS instruments by offering an extension on the angular range to include the ultra-small-angles. The instrument has been shown to work for interleaved SAXS/USAXS experiments. T2 - XVII International Small Angle Scattering Conference - SAS2018 CY - Traverse City, Michigan, USA DA - 07.10.2018 KW - Small-angle scattering KW - USAXS KW - Bonse Hart KW - Instrumentation KW - Data analysis PY - 2018 AN - OPUS4-46519 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Britta T1 - Signal enhancement in GD-MS analysis of pure matals by application of Argon- Helium mixtures as discharge gas T2 - ECASIA '07, GDS-Sitzung CY - Brussels, Belgium DA - 2007-09-13 PY - 2007 AN - OPUS4-14860 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Michalik-Onichimowska, Aleksandra T1 - The effect of laser pulse duration on atmospheric pressure IR-MALDI using liquid matrices N2 - Matrix assisted laser desorption/ionization using liquid matrices and infrared laser irradiation (liquid IR-MALDI) is an attractive detection scheme since it enables a direct coupling to liquid chromatographic separation techniques.1 Albeit extensive studies have been targeted to achieve a more general understanding of the underlying ionization mechanism, the exact role of individual contributions, such as thermal vaporization, phase explosion or photoablation, could not be exhaustively identified.2 This contribution will present a direct comparison of ion mobility (IM) spectra obtained by utilizing an optical parametric oscillator and an Er:YAG laser, both operating at a central wavelength of = 2.94 µm, but with temporal pulse widths of 7 ns or several hundred µs, respectively. Thus, the resulting peak power of the Er:YAG laser is three orders of magnitude smaller than that of the OPO, however supplies a tenfold higher energy per pulse. In addition to the mere detection efficiencies, analysis of the IM spectrometric results gives insights into the initial solvation state of the formed ions. Accompanying high speed shadowgraphy imaging experiments contribute towards a better understanding of the involved liquid-gas phase transition dynamics. T2 - Bunsentagung 2015 CY - Bochum DA - 2015-05-14 PY - 2015 AN - OPUS4-34777 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herwig, Nadine T1 - Bestimmung der Isotopenzusammensetzung in Rinderproben T2 - ICP-MS-Anwendertreffen + 8. Symposium der Massenspektrometische Verfahren der Elementaranalyse CY - Dresden, Germany DA - 2008-09-17 PY - 2008 AN - OPUS4-18057 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herwig, Nadine T1 - Stable isotope analysis of light and heavy elements in milk and urine of cattle T2 - JESIUM CY - Gien, France DA - 2008-08-31 PY - 2008 AN - OPUS4-18058 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulte, Franziska T1 - Vibrational spectroscopic characterization an identification of Pollen T2 - ECSBM 2007 CY - Paris, France DA - 2007-09-01 PY - 2007 AN - OPUS4-17983 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulte, Franziska T1 - Raman-Spektroskopie als potentielles Werkzeug zur on-line Identifizierung von Pollen T2 - 4. Kolloquium Arbeitskreises Prozessanalytik der GDCh CY - Basel, Switzerland DA - 2008-11-17 PY - 2008 AN - OPUS4-18375 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhse, Marek T1 - Combining LIBS and Raman- Marrying Elemental and Molecular Information for Prozess Analysis T2 - 4. Kolloquium des AK Prozessanalytik der GDCh CY - Basel, Switzerland DA - 2008-11-17 PY - 2008 AN - OPUS4-18376 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leiterer, Jork T1 - Contactless handling of nanosized samples by acoustic levitation T2 - ANAKON 2007 - Tagung Fachgruppe Analytische Chemie der Gesellschaft Deutscher Chemiker, Friedrich-Schiller-Universität CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14685 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herwig, Nadine T1 - Isotopenverhältnisse verschiedener Elemente in tierischen Matrizes von Rindern T2 - Anakon 2007 CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14736 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Sebastian T1 - Charakterisierung eines technischen LAS-Produktes T2 - Tag der Chemie 2008 CY - Berlin, Germany DA - 2008-04-23 PY - 2008 AN - OPUS4-17492 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Entwicklung eines simultanen Bestimmungs- und Anreicherungsverfahrens für Östrogene und östrogenwirksame Verbindungen in Abwasser T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-18222 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulte, Franziska T1 - Classification and Indentification of Pollen by Raman Spectroscopy T2 - 12th International Palynological Congress (IPC-XII 2008) CY - Bonn, Germany DA - 2008-08-30 PY - 2008 AN - OPUS4-18082 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulte, Franziska T1 - Characterisation of Pollen and their Constituents by Raman Spectroscopy T2 - ICORS CY - London, England DA - 2008-08-17 PY - 2008 AN - OPUS4-18083 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wienold, Julia T1 - Elemental analysis of printed circuit boards, with respect to different preparation steps, considering the RoHS regulations T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-19012 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Analyse von Reinkupfer mit LA-ICP-MS: Vergleich unterschiedlicher Kalibrierstrategien T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-19009 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kipphardt, Heinrich T1 - Mikrowelleninduzierte Plasmaspektrometrie (MIP) als Detektor für die Trägergas-Heißextraktion (CGHE) T2 - ANAKON 2007 CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14636 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Britta T1 - Spurenanalytik in Reinkupfer mittels Glimmentladungsmassenspektrometrie T2 - ANAKON 2007 CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14641 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Photolytischer Abbau von Decabromdiphenylethan T2 - GDCh-Tagung ANAKON 2007 CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14606 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hanebeck, Olaf T1 - Bestimmungsmethoden für Acrylamid in Wasser nach Derivatisierung T2 - ANAKON 2007 der GDCh CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14599 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gusarova, Tamara T1 - GD-MS: calibration for VG9000 and Element GD - Do RSF- and StRSF-concepts always work? T2 - EuroAnalysis XIV CY - Antwerp, Belgium DA - 2007-09-09 PY - 2007 AN - OPUS4-14800 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Britta T1 - Possibilities of signal enhancement in GD-MS analysis of pure metals T2 - EuroAnalysis XIV CY - Antwerp, Belgium DA - 2007-09-09 PY - 2007 AN - OPUS4-14859 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herwig, Nadine T1 - Kohlenstoff und Stickstoff Isotopenverhältnisse in Milch und Urin von Rindern T2 - 29. Jahrestagung der Arbeitsgemeinschaft Stabile Isotope - GASIR CY - Freiberg, Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-16305 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herwig, Nadine T1 - Kohlenstoff und Stickstoff Isotopenverhältnisse in Milch und Urin von Rindern T2 - 16. Jahreskolloquium der Interessengemeinschaft Atomspektroskopie (IGAS) CY - Berlin, Germany DA - 2006-11-18 PY - 2006 AN - OPUS4-16303 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Laser ablation ICP-MS for the determination of trace impurities in pure copper T2 - IGAS-Jahreskolloquium 2007 CY - Berlin, Germany DA - 2007-11-08 PY - 2007 AN - OPUS4-16304 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bremser, Wolfram T1 - Drift control and merging schemes in stability testing T2 - EUROANALYSIS XIV CY - Antwerp, Belgium DA - 2007-09-09 PY - 2007 AN - OPUS4-16262 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolff, Stephan T1 - Kontaktfreie Handhabung kleinster Analytmengen durch akustische Levitation: Frühstadien der Mineralisation von Calciumcarbonat mittels Synchrotron-Röntgenstreuung T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-18717 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gusarova, Tamara T1 - Calibration of DC GD-MS with synthetic standards T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-18989 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Sebastian T1 - Charakterisierung eines technischen LAS-Produktes T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-18725 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esslinger, Susanne T1 - Untersuchung zur Bioisomerisierung von Hexabromcyclododecan in Spiegelkarpfen T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-18724 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Two calibration-free approaches for analysis of industrial slags by laser-induced breakdown spectroscopy T2 - FKA, Festkörperanalytik CY - Wien, Österreich DA - 2015-06-07 PY - 2015 AN - OPUS4-35150 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gusarova, Tamara T1 - Comparison of different quantification procedures in glow discharge mass spectrometry applied to high-purity metals T2 - 2007 European Winter Conference on Plasma Spectrochemistry CY - Taormina, Italy DA - 2007-02-18 PY - 2007 AN - OPUS4-13680 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - LAS-Kalibrierstandards T2 - ANAKON 2007 CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-13741 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Non-isothermal asymetric expansion into vacuum of radiating laser induced plasma T2 - Winter Plasma Conference CY - Tucson, AZ, USA DA - 2006-01-07 PY - 2006 AN - OPUS4-12156 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herwig, Nadine T1 - Zusammenhang der Isotopenverteilung verschiedener Elemente im Futter und in tierischen Produkten von Rindern T2 - 39. Diskussionstagung der Deutschen Gesellschaft für Massenspekrometrie CY - Mainz, Germany DA - 2006-03-05 PY - 2006 AN - OPUS4-14558 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Haisch, C. T1 - A new setup for Microanalysis by Laser Induced Plasma Spectroscopy (LIPS) in the VUV and UV-Vis region T2 - Anakon 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-16477 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Maike T1 - Anevaluation of a new commercial Echelle Spectrometer for laser induced plasma spectroscopy (LIPS) T2 - Prozessanalytik CY - Berlin, Germany DA - 2006-02-23 PY - 2006 AN - OPUS4-16478 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Swart, Claudia T1 - SPE fixated arsenic species as spike material for the evaluation of sample preparation procedure in species analysis T2 - 4th International Conference on Trace Element Speciation in Biomedical, Nutritional and Environmental Sciences CY - Munich, Germany DA - 2008-05-25 PY - 2008 AN - OPUS4-17717 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Determination of refractory analytes in advanced ceramic powders using Freonassisted atomaization in solid sampling electrothermal atomic absorption spectrometry T2 - ESAS 2008 European Symposium on Atomic Spectrometry CY - Weimar, Germany DA - 2008-09-28 PY - 2008 AN - OPUS4-17574 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhse, Marek T1 - Novel Versatile LIBS-Raman Echekke Spectrometer for Elemental and Molecular Analysis of Solids T2 - LIBS 2008 CY - Berlin, Germany DA - 2008-09-22 PY - 2008 AN - OPUS4-18488 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhse, Marek T1 - LIBS and Raman - together at last T2 - ICORS 2008 CY - London, England DA - 2008-08-17 PY - 2008 AN - OPUS4-18489 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - von Rüden, H. T1 - Röntgen-Computertomographie (CT) für die Kulturguterhaltung N2 - Als bildgebendes und zerstörungsfreies Verfahren eignet sich die Röntgen-Computertomographie (CT) insbesondere bei der Untersuchung von Kunst- und Kulturgütern. Die für Werkstoffprüfung und Materialanalyse konzipierten CT-Anlagen bieten dank hoher Röntgenleistung die Möglichkeit zusätzlich zu Holz, Keramiken und Kunststoffen auch stark schwächende Materialien, wie bspw. Metalle, zu durchdringen. Für eine hohe räumliche Auflösung im unteren Mikrometerbereich (2-200µm) sorgen entsprechend ausgelegte CT-Anlagen. In der Bundesanstalt für Materialforschung und -prüfung (BAM) stehen mehrere solcher CT-Anlagen für unterschiedliche Fragestellungen sowie Probengrößen und - materialien zur Verfügung. Einige Beispiele aus den vergangenen Arbeiten der BAM veranschaulichen das große Potential dieser Untersuchungsmethode. Da bei einer CT-Messung in der Regel das gesamte Untersuchungsobjekt erfasst und in ein digitales Volumenmodell überführt wird, eröffnet sich für Archäologen und Restoratoren die Möglichkeit Untersuchungen hinsichtlich Materialzusammensetzung, Erhaltungszustand und Herstellungstechnik am virtuellen Objekt vorzunehmen, ohne die Originalsubstanz zu beeinträchtigen. Gegenüber der klassischen Radiografie, bei der nur eine zweidimensionale Abbildung erreicht wird, bietet die CT-Untersuchung die Möglichkeit innenliegende Strukturen dreidimensional zu erfassen. Die notwendige Bestimmung der Objektoberfläche erlaubt zudem die Erstellung eines Oberflächenmodells des untersuchten Gegenstandes. Damit lassen sich unter anderem mechanische Simulationen (Belastung, Durchbiegung, Durchströmung) durchführen. Der erzeugte Datensatz kann somit auch zur Herstellung eines Replikats im 3D-Druckverfahren genutzt werden. Anhand der Untersuchung der Mandoline von Smorsone wird gezeigt, wie eine CT-Messung durchgeführt wird und wie in dem anschließend rekonstruierten 3D-Datensatz mittels Koordinatenmesstechnik Maße (Abstände, Wandstärken, Winkel) exakt ermittelt werden können. T2 - Jahrestagung der Gesellschaft für Musikforschung CY - Berlin, Germany DA - 28.09.2022 KW - Mikro-CT KW - Bildverarbeitung KW - Holz KW - Bronze KW - ZfP PY - 2022 AN - OPUS4-56412 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tuma, Dirk T1 - Thermophysical properties of hydrogen-containing mixtures for the extension of equation-of-state models for natural gas N2 - The decarbonization of the energy sector is driving the interest in hydrogen as an energy-storage medium. A practical alternative to transport and distribute H2 is using the existing infrastructure for natural gas. The GERG-2008 equation of state currently serves as the ISO standard (ISO 20765-2) for the calculation of thermodynamic properties of natural gas, but H2 appears only as a secondary component. The availability of consolidated data for mixtures with H2 available at the time of its constitution was very limited. The experimental characterization of the thermodynamic behavior of mixtures of H2 with the main components of natural gas is thus of great relevance to validate and improve the GERG-2008 equation of state for its use with H2-enriched natural gas. T2 - Thermodynamik-Kolloquium 2021 CY - Online meeting DA - 27.09.2021 KW - Hydrogen-containing mixtures KW - Density measurements KW - Equations of state PY - 2021 AN - OPUS4-53991 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Graeber, Gustav T1 - Graeber Lab for Energy Research - Overview N2 - Vorstellung der Forschungsaktivitäten der AG Graeber an der HU Berlin und an der BAM. Diese beinhalten die Erforschung grundlegender Benetzungsphänomene von Alkalimetallen, deren Anwendung in Festkörperbatterien mit pastenartigen Alkalimetallanoden, die Erforschung von Schwefelkathoden, die Synthese von Natrium-leitenden Festelektrolyten sowie die Entwicklung von Hydrogel-basierten Batterien. T2 - BMBF BattFutur NanoMatFutur Netzwerktreffen 2025 CY - Berlin, Germany DA - 24.02.2025 KW - Batterie PY - 2025 AN - OPUS4-63361 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ziegler, Mathias A1 - M., Daniel T1 - Thermografie im Fokus: Aktuelle Normen und Standards N2 - Die Thermografie ist trotz ihrer fortschrittlichen wissenschaftlichen und technologischen Grundlagen ein relativ neues Verfahren innerhalb der zerstörungsfreien Prüfmethoden. Aufgrund ihrer zahlreichen Vorteile gewinnt sie zunehmend an Beliebtheit. Für eine breitere Anwendung, insbesondere in der Industrie, sind Normen, Standards und technische Richtlinien von großer Bedeutung. In diesem Beitrag wird der aktuelle Stand der Normung in Deutschland beleuchtet. Wir erläutern die bestehenden Normen und technischen Regelungen für die Thermografie sowohl national, europäisch als auch international und werfen einen Blick in die Zukunft. Zudem ist die Normungsarbeit auf die Mitwirkung interessierter Kreise angewiesen, dazu zählen u.a. industrielle und akademische Anwender*innen, Gerätehersteller*innen, Forschungseinrichtungen, öffentliche Hand, Dienstleistungsunternehmen. Wir laden Sie ein, Ihre Bedarfe in Bezug auf Normungsprojekte und Ideen einzubringen und direkt an die Autoren zu senden. T2 - DGZfP-Jahrestagung 2025 CY - Berlin, Germany DA - 26.05.2025 KW - Thermografie KW - Normen KW - Standards PY - 2025 AN - OPUS4-63525 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lohrer, Christian T1 - FEUERWERK – Nachhaltigkeit & Sicherheit N2 - Das Poster gibt einen Überblick über den aktuellen Normungsauftrag der EU-Kommission zum Thema Feuerwerk, beschreibt aktuelle Herausforderungen bei der Prüfung und Bewertung von Feuerwerk und zeigt Lösungen und Ideen für Fragestellungen in diesem Zusammenhang auf. T2 - 16. Informationsveranstaltung Sprengstoffe und Pyrotechnik CY - Berlin, Germany DA - 20.05.2025 KW - Feuerwerk KW - Kunststoffe KW - Schallpegel PY - 2025 AN - OPUS4-63515 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Holger T1 - Entwicklung und Anwendung eines Immunoassays (ELISA) zur Quantifizierung von Sulfamethoxazol in Abwasser und Oberflächengewässern N2 - N-Acetyl-SMX ist der Kreuzreaktand mit der bisher höchsten bekannten Kreuzreaktivität in diesem SMX-ELISA. Gemessene SMX-Konzentrationen in Klärwerkszuläufen waren im Bereich von 354-881 ng/L, in Abläufen von 221-421 ng/L und in Oberflächenwasser von 24-202 ng/L. Durch Verwendung einer Auftrennung der Probe in Fraktionen lassen sich störende Interferenzen beseitigen, aber die Probenmesszeit wird deutlich länger. T2 - 2. Wasseranalytisches Seminar (MWAS 2016) CY - Mülheim an der Ruhr, Germany DA - 14.09.2016 KW - Überbestimmung KW - ELISA KW - Kreuzreaktand KW - LC-ELISA KW - Sulfamethoxazole PY - 2016 AN - OPUS4-38531 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kluge, Martin T1 - Simulation and experimental determination of the self ignition of tetrafluoroethylene in a 100-dm³-autoclave N2 - The gaseous TFE is a monomer which is used to form PTFE, also known as Teflon®, by a polymerisation process at elevated conditions of temperature and pressure. TFE belongs to the group of chemically instable gases which are able to decompose under specific conditions releasing a huge amount of heat comparable to a gas explosion of flammable gases. Due to several incidents in PTFE – production plants the investigation of the safety related properties of TFE at elevated condition was necessary and resulted in a research project at BAM which is subsidized by the PlasticsEurope association. In a first stage the pressure dependence of the Minimum Ignition Temperature for Decomposition (MITD) was determined in the range of 0.5 MPa - 3 MPa in small autoclaves with volumes of 0.2 dm³ and 3 dm³. These results were used to validate the numerical model and were found to correlate quite well with the simulated values. Nevertheless the applicability had to be confirmed for larger volumes as well. Therefore a heat able 100-dm³-autoclave was constructed and build to determine the MITD in the range of 0.5 MPa to 1.1 MPa. T2 - 8th European Congress of Chemical Engineering CY - Berlin, Germany DA - 25.09.2011 KW - Ignition temperature KW - Self decomposition KW - MITD KW - TFE KW - Tetrafluoroehtylene PY - 2011 N1 - Das Poster hat den Adolf-Martens-Preis im Bereich "Safety Engineering" erhalten. - The poster was awarded the Adolf Martens Prize in the section "Safety Engineering". N1 - Geburtsname von Kluge, Martin: Beckmann-Kluge, M. - Birth name of Kluge, Martin: Beckmann-Kluge, M. AN - OPUS4-55754 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ulbricht, Alexander T1 - Do Microbes like Additively Manufactured Aluminium? First Details of a Corrosion Test using Sulphate-Reducing Bacteria N2 - Additively manufactured metals become relevant for industrial application. Although many studies on wet corrosion of these metals have been conducted, to the authors knowledge no study seems to contain microbiological corrosion (MIC). In the presented study an experiment was conducted on PBF-LB/AlSi10Mg to test this material's susceptibility for MIC. The tested specimen were analysed using Computed Tomography before and after the MIC experiment to enable a detailed characterisation the damage on the specimens' global and local level. A global reduction of material was observed. In addition, localised damage along process inherent features of the materials microstructure was observed. T2 - Beiratssitzung TF Umwelt CY - Berlin, Germany DA - 17.03.2025 KW - Computed Tomography KW - Additive Manufacturing KW - Biocorrosion KW - Sulphate-reducing Bacteria KW - Microbially influenced corrosion PY - 2025 AN - OPUS4-62772 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ebell, Gino A1 - Lehmann, Jens A1 - Burkert, Andreas T1 - Weathring camopaigns to determine corrosivity on offshore wind turbines N2 - ISO 9223 standard for the classification of corrosivity in atmospheres is based on the mass loss of standard samples. We are concerned with the question of which corrosivity categories for Fe-sheets can be found at an offshore wind turbine and where they are comparable with our offshore locations. The preliminary results indicate that the extreme corrosivity of class CX is only given in splash water-affected exposure, which is not a real atmospheric exposure condition. The results of the exposure at the SP show that the corrosivity category changes into C4, only a few meters above the splash water zone. Compared to the marine environments at Helgoland or OSS-Platform, the corrosivity is higher. The offshore environment is not as corrosive as originally expected, no atmospheric corrosion attack could be determined that would form the corrosivity category C5. T2 - Eurocorr 2024 CY - Paris, France DA - 01.09.2024 KW - Korrosion KW - Corrosion PY - 2024 AN - OPUS4-60973 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drexler, Andreas A1 - Konert, Florian T1 - Hydrogen Solubility in Steels – What is the Role of Microstructure? N2 - Hydrogen gas plays a key role in the European energy transition strategy. When transmitting and storing compressed hydrogen gas, safety is one of the most important conditions. With increasing hydrogen pressure and temperature, more hydrogen is absorbed by the steel components, such as pipelines or valves, and may lead to embrittlement. Although, a deep understanding of microstructure on the hydrogen solubility in steels is missing. Classical Sieverts’ law is only valid at high temperatures and low gas pressures. For that purpose, new theory is presented, which explains the role of microstructure on hydrogen solubility. Hydrogen trapping at microstructural defects is a thermally activated mechanism and causes an increase of the hydrogen solubility with decreasing temperatures. This mechanism has to be considered in cryogenic applications, such liquid or compressed hydrogen storage. T2 - EPRI Workshop on Hydrogen Embrittlement 2024 CY - Oxford, UK DA - 23.06.2024 KW - Hydrogen KW - Sieverts’ law KW - Hydrogen solubility in steels KW - Hydrogen trapping PY - 2024 AN - OPUS4-60477 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Phukphatthanachai, Pranee T1 - A new approach of using polyethylene frits for the quantification of sulphur in copper metals by isotope dilution LA-ICP-MS N2 - For the first time polyethylene (PE) frits were used to quantify sulphur in copper metal and its alloys by isotope dilution combined with LA-ICP-MS: an alternative approach for sample preparation. The properties of the PE frit meet the requirements for isotope dilution LA-ICPMS which are porous material, thermal and chemical resistance and high absorption efficiency. The breakthrough, however, as a support material, is the low sulphur blank, which is only two times of the gas flow blank (2.3-4.0 x 10⁴ cps). Additionally, the porosity of the frit was considered, as it directly affects the absorption efficiency for the sample solution, which is present in the cavities of the frit. The absorption efficiency was studied by loading sulphur standards with varying sulphur amounts (0 - 80 µg S) onto the frits. The remaining sulphur which was not absorbed by the frit was rinsed off and was measured by ICP-MS. This indirect method shows that more than 99.5 % of the loaded sulphur was absorbed by the frit. The so prepared frits with increasing sulphur amount were measured by LA-ICP-MS showing a good linearity between 0 µg S and 40 µg S with a coefficient of determination, r2 of 0.9987 and a sensitivity of 3.4x10⁴ cps µgˉ¹ for 32S. Three copper reference materials produced by BAM (BAM-M376a, BAM-228 and BAM-227) were selected to develop and validate the LA-ICP-IDMS procedure. The IDMS technique was applied to these samples as follows: the samples were spiked, dissolved, digested and then the digested solution was absorbed on the frits. The dried frit samples were then analyzed by LA-ICP-IDMS and it could be demonstrated that the sample solution dispersed on the frits did not influence the 32S/34S ratio significantly even though the sulphur intensities were fluctuating along the scan lines. Relative standard deviations of the isotope ratios were below 5 % in average between 3 lines (except for the pure spike solution and procedure blank). The measurement results were validated by comparing them with the results obtained by conventional ICP-IDMS. Plotting the mass fraction of sulphur in copper obtained by LA-ICP-IDMS versus those obtained by ICP-IDMS yields a linear curve with a correlation coefficient of 0.9999 showing a strong agreement between both techniques. The metrological traceability to the SI for the mass fraction of sulphur in copper is established by an unbroken chain of comparisons, each accompanied by an uncertainty budget. Thus, the measurement results are considered reliable, acceptable and comparable within the stated measurement uncertainty. The metrological traceability chain from the kg down to the final mass fraction in the samples obtained by LA-ICP-IDMS is illustrated in this presentation. T2 - ESAS & CANAS 2018 CY - Berlin, Germany DA - 20.03.2018 KW - Laser ablation KW - Isotope dilution mass spectrometry KW - SI traceability KW - Measurement uncertainty PY - 2018 AN - OPUS4-44641 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Panne, Ulrich T1 - Improvement of Asymmetrical FlowField-flow Fractionation - Using Slot-outlet Technique T2 - First Munich Conference on Field Flow Fractionation in Pharmaceutical Biotechnology CY - Munich, Germany DA - 2005-10-06 PY - 2005 AN - OPUS4-10917 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Maike T1 - LIPS-Microanalysis in the VUV T2 - EMSLIBS 2005, Fraunhofer-Institute for Laser Technology ILT CY - Aachen, Germany DA - 2005-09-06 PY - 2005 AN - OPUS4-7550 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ascher, Lena T1 - Imaging of Eu doped very small iron oxide nanoparticle in atherosclerotic plaques via LA ICP-MS N2 - Atherosclerotic lesions can be visualized by magnetic resonance imaging (MRI) using very small iron oxide nanoparticles (VSOP). VSOP accumulate in atherosclerotic plaques and thus serve as an atherosclerosis probe. The aim of this project was to image the distribution of europium doped VSOP (Eu-VSOP) by laser ablation ICP-MS in histological thin cuts of the aortic root region of ApoE knockout mouse model that is rich in atherosclerotic plaques. In addition, it was investigated whether VSOP accumulation in the plaques correlates with other biomarkers of inflammation for example macrophages and altered endothelium to assess whether it correlates with instability or vulnerability of the plaque regions. For this purpose, antibodies were labeled with various lanthanide elements and correlated with the Eu-VSOP distribution using LA-ICP-MS in a multiplex measurement mode. A possible correlation of reactive oxygen species (ROS) with endogenous iron or Eu-VSOP can also be detected by LA-ICP-MS. For this purpose, ROS-specific antibodies were also labeled with lanthanides. T2 - BI(MS)2 2018 – First Workshop on Laser Bioimaging Mass Spectrometry CY - Münster, Germany DA - 23.05.2018 KW - Bioimaging KW - LA-ICP-MS KW - Immunoassay KW - Nanoparticle KW - Labeling PY - 2018 AN - OPUS4-45133 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merz, Benjamin T1 - Precise Position Detection for Repair of Gas Turbine Blades using PBF-LB/M N2 - Additive manufacturing (AM) technologies are becoming increasingly important, not only for the manufacture of parts, but also as repair technology that complement existing production technologies. Powder bed fusion of metals by laser beam (PBF-LB/M) combines the freedom in design with high achievable accuracy, making it ideal as a repair approach. However, there are still challenges in adapting process for repair applications. When mounting parts inside PBF-LB/M machines, their real position within the build volume is unknown. One goal of a repair process is to minimize the offset between the base component and the additively manufactured structure to reduce additional rework. For a minimum offset between component and additively manufactured structure, the actual position of the component has to be identified with high precision within the machine coordinate system (MCS). In this work a process setup is presented that allows the actual position of a gas turbine blade to be detected inside a PBF-LB/M machine. A high resolution camera with 65 megapixel is used for this purpose. The presented setup is implemented on a SLM 280 HL PBF-LB/M machine. In addition to the setup, a novel repair workflow using PBF-LB/M is presented. The developed setup and workflow consider inaccuracies in the component and camera mounting, as well as process inaccuracies. This includes keystone distortion correction by homography. The machine setup and workflow are used to repair a real gas turbine blade. Subsequently the offset between the turbine blade and the additivley manufactured structure is validated by 3D scanning the repaired part. The maximum offset is 160 µm. The presented approach can be extended to other geometries and PBF-LB/M machine manufacturers. The high-resolution camera approach is platform independent, which facilates the market penetration of PBF-LB/M repair processes. T2 - International Symposium Additive Manufacturing 2023 (ISAM 2023) CY - Dresden, Germany DA - 30.11.2023 KW - additive manufacturing KW - powder bed fusion of metals utilizing a laser beam KW - PBF-LB/M KW - hybrid repair KW - position detection KW - high-resolution camera PY - 2023 AN - OPUS4-59193 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chamorro, C. R. T1 - Thermodynamic (p, ρ, T) characterization of H2-enriched natural gases N2 - Hydrogen-enriched natural gas, H2NG is a mixture of natural gas and H2 that can be used on existing natural gas infrastructure with little or even no modification to be applied H2NG is thus an option in the transition from fossil fuels to a hydrogen economy, as it can reduce greenhouse gas emissions and can accelerate the adoption of H2 from renewable sources. Theoretically, H2 can be mixed with NG in any ratio, but H2NG mixtures with up to 20 vol-% of H2 represent the most realistic near term option due to technical and economic reasons. The addition of H2 to natural gas alters the thermodynamic properties of the mixture, which affects its transport, storage, and combustion characteristics. In this work, we present experimental density measurements for different H2NG mixtures, performed with a high-precision single sinker densimeter from 250 to 350 K and up to 20 MPa. The mixtures were prepared gravimetrically according to ISO 6142-1 for maximum precision in their composition. T2 - The 22nd European Conference on Thermophysical Properties ECTP 2023 CY - Venice, Italy DA - 10.09.2023 KW - Hydrogen-enriched natural gas KW - Single-sinker densimeter KW - High-pressure density KW - Equations of state PY - 2023 AN - OPUS4-60473 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias T1 - Primary References for the Determination of Sulphur Impurities in Hydrogen N2 - Fuel cell electric vehicles are expanding quickly from light-duty to heavy-duty applications, such as buses or trucks. Hydrogen fuel quality needs to comply with ISO 14687:2025 to avoid any harmful impact on the vehicles. Total sulphur is one of the most impactful contaminants to a fuel cell system and has a threshold of 4 nmol/mol. In the European Partnership for Metrology (EPM) project Met4H2, BAM together with VSL, the National Metrology Institute of the Netherlands, developed novel gaseous primary reference materials (PRM) to improve the accuracy of the analysis of 7 sulphur compounds (hydrogen sulphide, carbonyl sulphide, methyl mercaptan, ethyl mercaptan, dimethyl sulphide, diethyl sulphide, and tetrahydrothiophene) for the quality control of hydrogen as fuel gas at this challenging amount fraction. These PRM were cross-validated using thermal desorption gas chromatography with a sulphur chemiluminescence detector (TD-GC/SCD). The results are presented and limits discussed. T2 - Joint workshop EMN for Energy Gases CY - Delft, Netherlands DA - 26.03.2025 KW - Sulphur impurities KW - Hydrogen KW - GC/SCD KW - Reference gas standards PY - 2025 AN - OPUS4-62818 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Konthur, Zoltán T1 - Tracking Human-Derived Contaminants in Wastewater: ELISA-Based Detection of Anthropogenic Markers in Samples from German Treatment Plants N2 - Wastewater-based epidemiology (WBE) plays a key role in pandemic management as an early warning system and a tool for guiding interventions. In Germany, combined sewer systems are prevalent, leading to fluctuations in wastewater volume and composition due to rainwater inflow, especially through street drains. This variability complicates the quantitative measurement of pathogens and pollutants in wastewater. While human excretion provides constant inputs, these parameters are often non-specific, lost, or degraded during transport. In contrast, pharmaceuticals excreted by humans, such as carbamazepine and diclofenac, as well as consumed caffeine, are fairly stable and serve as "anthropogenic markers." The simultaneous detection of these markers aids in normalizing WBE studies. Antibody-based methods, particularly Enzyme-Linked Immunosorbent Assays (ELISA), offer a cost-effective alternative to complex chromatographic techniques for monitoring anthropogenic markers. They demonstrate superior normalization quality compared to the frequently used quantitative PCR-based marker Pepper mild mottle virus (PMMoV). T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Immunoassay KW - Spurenstoffe KW - Carbamazepin KW - anthropogener Marker KW - Koffein PY - 2025 AN - OPUS4-63494 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Boateng, Francis Twumasi T1 - Real time in-situ radiography for hot crack detection during welding T2 - Digital Industrial Radiology and Computed Tomography (DIR) CY - Ghent, Belgium DA - 2015-06-22 PY - 2015 AN - OPUS4-33770 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Demidov, Alexandr T1 - Towards Real Time Sorting With LIBS T2 - 7th International Conference on Laser Induced Breakdown Spectroscopy CY - Luxor, Egypt DA - 2012-09-29 PY - 2012 AN - OPUS4-27300 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stindt, Arne T1 - CO2-Laser Atmospheric Pressure Ionization of Acoustically Levitated Droplets T2 - DGMS Jahrestagung CY - Poznan, Poland DA - 2012-03-04 PY - 2012 N1 - Geburtsname von Buurman, Merwe: Albrecht, M. - Birth name of Buurman, Merwe: Albrecht, M. AN - OPUS4-27327 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Buurman, Merwe T1 - Acoustically levitated droplets as containerless microreactors T2 - Microfluids 2012 CY - Heidelberg, Germany DA - 2012-07-25 PY - 2012 N1 - Geburtsname von Buurman, Merwe: Albrecht, M. - Birth name of Buurman, Merwe: Albrecht, M. AN - OPUS4-27334 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Porizka, Pavel T1 - High repetition rateLIBS using acousto-optically gated detection T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27803 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - A TBT reference method for European water legislation T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27720 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Arsenolipide im Hering - Eine Quelle für kanzerogene Arsenverbindungen im Urin? T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27858 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Janine T1 - GC-ICP-MS-Optimierungen zur Bestimmung von Organozinnverbindungen entsprechend der EU-Wasserrahmenrichtlinie "WFD 2000/06/EC" T2 - CANAS 2013 CY - Freiberg, Germany DA - 2013-03-17 PY - 2013 AN - OPUS4-27972 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuhlich, Paul T1 - Desinfektionsnebenprodukte von Personal Care Products T2 - ANAKON CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27826 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - XPS studies of epoxy surfaces used for carbohydrate reference surfaces and arrays T2 - Potsdam Days on Bioanalysis 2013 CY - Potsdam-Golm, Germany DA - 2013-11-07 PY - 2013 AN - OPUS4-29875 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nietzold, Carolin T1 - XPS and NEXAFS studies of epoxy surfaces T2 - BESSY User Meeting 2013 CY - Berlin, Germany DA - 2013-12-05 PY - 2013 AN - OPUS4-29963 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Quantitative NMR-Spektroskopie für die Gasanalytik T2 - Anakon 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-29202 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tuma, Dirk T1 - Kalorimetrische Bestimmung des Brennwerts nicht-konventioneller Brenngase und Vergleich mit analytischer Methodik T2 - VDI-Expertenforum Thermodynamik-Kolloquium 2013 CY - Hamburg, Germany DA - 2013-10-07 PY - 2013 AN - OPUS4-29274 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tuma, Dirk T1 - Standards and methods for the analysis of coal mine methane, a "non-conventional" energy gas T2 - GAS 2013 CY - Rotterdam, Netherlands DA - 2013-06-05 PY - 2013 AN - OPUS4-29338 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Börno, Fabian T1 - Analyse von Kunststoffadditiven T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 2013-11-12 PY - 2013 AN - OPUS4-29426 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias T1 - Chemische Analytik von Solarsilicium T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 2013-11-12 PY - 2013 AN - OPUS4-29691 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - NMR Spectroscopy at elevated pressure - Applications on fluids and gases T2 - Practical Applications of NMR in Indutry Conference (PANIC) CY - Charlotte, NC, USA DA - 2014-02-03 PY - 2014 AN - OPUS4-30203 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riedel, Jens T1 - Laser-induzierte Plasmaspektroskopie zur Prozessanalytik an Schlacken im elektrischen Lichtbogenofen T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-30342 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Warschat, Carsten T1 - Charakterisierung einer Sonic Spray Ionisationsquelle mittels Laserinduzierter Fluoreszenz T2 - DGMS 2014 CY - Frankfurt am Main, Germany DA - 2014-03-02 PY - 2014 AN - OPUS4-30346 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Warschat, Carsten T1 - Spray-Ionisation mit einer handelsüblichen Airbrushpistole T2 - DGMS 2013 CY - Berlin, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-30345 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Quantitative NMR-Spektroskopie für die Gasanalytik T2 - Adlershofer Forschungsform CY - Berlin, Germany DA - 2013-11-12 PY - 2013 AN - OPUS4-30205 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riedel, Jens T1 - Atmospheric Pressure Laser Evaporation Ionization of Levitated Dropletz T2 - ASMS CY - Minneapolis, MN, USA DA - 2013-06-09 PY - 2013 AN - OPUS4-30341 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bierstedt, Andreas T1 - High repetitation rate AP-MALDI in combination with liquid matrices T2 - DGMS 2014 CY - Frankfurt am Main, Germany DA - 2014-03-02 PY - 2014 AN - OPUS4-30348 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Spectrochemical Analysis and Diagnostics via Modeling of Laser Induced Plasma T2 - Winter Plasma Conference 2014 CY - Amelia Island, FL, USA DA - 2014-01-04 PY - 2014 AN - OPUS4-30395 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stindt, Arne T1 - Characterization of Pressure Field Distribution for an Optimization of Ultrasonic Levitatiors T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 N1 - Geburtsname von Buurman, Merwe: Albrecht, M. - Birth name of Buurman, Merwe: Albrecht, M. AN - OPUS4-30351 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bierstedt, Andreas T1 - Ionische Flüssigkeiten als Matrices für die AP-MALDI MS T2 - DGMS 2013 CY - Berlin, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-30347 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Spatially Resolved vs Spatially Integrated Measurements of Parameters of Laser Induced Plasma T2 - SCIX (FACSS) CY - Milwaukee, WI, USA DA - 2013-09-29 PY - 2013 AN - OPUS4-30399 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Diagnostics and Modeling of Laser Induced Plasma Based on Optical Tomography T2 - FLAMN CY - Saint Petersburg, Russia DA - 2013-06-22 PY - 2013 AN - OPUS4-30396 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Absorption Laser-Induced Breakdown Spectroscopy T2 - SCIX (FACSS) CY - Milwaukee, WI, USA DA - 2013-09-29 PY - 2013 AN - OPUS4-30398 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nietzold, Carolin T1 - XPS studies of epoxy surfaces used for potential carbohydrate reference arrays T2 - JCF spring, symposium CY - Jena, Germany DA - 2014-03-26 PY - 2014 AN - OPUS4-30589 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abdelshafi, Nahla A. T1 - Nanostructures in microfluidic electrochemical immunosensors T2 - Analytica Conference 2014 CY - Munich, Germany DA - 2014-04-01 PY - 2014 AN - OPUS4-30515 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Börno, Fabian T1 - Laserablation induktiv gekoppeltes Plasma Massenspektrometrie zur Analyse von Kunststoffadditiven T2 - 24. ICP-MS Anwendertreffen 2014 CY - Geesthacht, Germany DA - 2014-09-15 PY - 2014 AN - OPUS4-31421 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Warschat, Carsten T1 - Improving the performance of an ultrasonic levitator coupled to API-TOF MS T2 - International Mass Spectrometry Conference 2014 CY - Geneva, Schweiz DA - 2014-08-24 PY - 2014 AN - OPUS4-31848 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Quantitative NMR Spectroscopy in the Gas Phase - Applications for Gas Industry and Metrology T2 - EuroPACT 2014 CY - Barcelona, Spanien DA - 2014-05-06 PY - 2014 AN - OPUS4-31880 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kern, Simon T1 - “Click” analytics for “click” chemistry – a simple method for calibration-free evaluation of online NMR spectra N2 - Currently research in chemical manufacturing moves towards flexible plug-and-play approaches focusing on modular plants, capable of producing small scales on-demand with short down-times between individual cam-paigns. This approach allows for efficient use of hardware, a faster optimization of the process conditions, and thus, an accelerated introduction of new products to the market. Driven mostly by the search for chemical syntheses under biocompatible conditions, so-called “click” chemistry rapidly became a growing field of research. The re-sulting simple one-pot reactions are so far only scarcely accompanied by an adequate optimization via compara-bly straightforward and robust analysis techniques. Here we report on a fast and reliable calibration-free online high field NMR monitoring approach for technical mixtures. It combines a versatile fluidic system, continuous-flow measurement with a time interval of 20 s per spectrum, and a robust, automated algo-rithm to interpret the ob-tained data. All spectra were acquired using a 500 MHz NMR spectrometer (Varian) with a dual band flow probe having a 1/16 inch polymer tubing working as a flow cell. Single scan 1H spectra were recorded with an acquisition time of 5 s, relaxation delay of 15 s. T2 - 12. Kolloquium des Arbeitskreises Prozessanalytik CY - Berlin, Germany DA - 28.11.2016 KW - Online NMR KW - Online monitoring KW - “Click” chemistry PY - 2016 AN - OPUS4-38585 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Holger T1 - Behandlung von Klärwerkswasserproben zur Reduktion von Matrixeffekten bei der Quantifizierung von Sulfamethoxazol mittels Immunoassay (ELISA) N2 - N-Acetyl-SMX, der Kreuzreaktand mit der bisher höchsten bekannten Kreuzreaktivität in diesem SMX-ELISA, kann durch saure Behandlung entfernt werden. Durch Verdünnung der Probe kann die Überbestimmung reduziert werden, besonders für Proben mit hoher Interferenzbelastung (Matrix). T2 - Jahrestagung der Wasserchemischen Gesellschaft CY - Bamberg, Germany DA - 02.05.2016 KW - Überbestimmung KW - ELISA KW - Matrixreduktion PY - 2016 AN - OPUS4-38529 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abdelshafi, Nahla A. T1 - Electrochemical immunosensor for screening using voltammetry N2 - Immunoassays based on the detection of the antibody -Antigen interaction belong to the most important analytical techniques. Electrochemical methods in immunoassays are increasingly used as they offer some advantages as being fast, simple, portable and cheap detection methods. Cocaine is a highly addictive stimulant that occurs naturally as an Alkaloid of the Coca plants. It is frequently detected on bank notes and in wastewater. T2 - 67th Annual Meeting of the International Socieity of Electrochemistry CY - The Hague, The Netherlands DA - 21.08.2016 KW - Cocain PY - 2016 AN - OPUS4-38551 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abdelshafi, Nahla A. T1 - Microfluidic electrochemical immunosensor for cocaine monitoring N2 - Immunoassays based on the detection of the antibody-antigen interaction belong to the most important analytical techniques. Electrochemical methods in immunoassays are increasingly used as they offer some Advantages as being fast, simple, portable and cheap detection methods. Cocaine is a highly addictive stimulant that occurs naturally as an Alkaloid of the Coca plants. It is frequently detected on bank notes and in wastewater. T2 - Biosensors 2016 CY - Gothenburg, Sweden DA - 25.05.2016 KW - Cocain PY - 2016 AN - OPUS4-38552 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Holger T1 - An insight into fractionated environmental water samples to understand matrix effects in immunoassays N2 - N4-acetyl-SMX is the most important cross-reacting compound for the SMX-ELISA with concentrations of 1064 - 2488 ng/L in influent wastewater and 40 - 160 ng/L in effluent wastewater. The ELISAgrams for estrone show less interfering signals than for SMX. ELISAgrams of SMX and estrone display in effluent wastewater more interfering signals than in influent wastewater. T2 - ANAKON CY - Graz, Austria DA - 23.03.2015 KW - Estrone KW - LC-ELISA KW - Matrix effects KW - Sulfamethoxazole PY - 2015 AN - OPUS4-38533 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abad Andrade, Carlos Enrique T1 - Molecular absorption spectrometry: a fast and accurate optical method for boron isotope analysis comparable to mass spectrometry N2 - Boron presents two stable isotopes, 10B and 11B and due to their relatively large mass difference (~ 10%) isotope fractionation leads to considerable isotope amount ratio variations n(10B)/n(11B) in natural occurrence. These have been used as a proof of provenance of mineral and biological samples, to estimate a contamination source and to the determination of geological processes by erosion or subduction. Additionally, boron is employed in the nuclear industry due to the capability of its isotope 10B to thermal-neutron capture and therefore 10B enriched boric acid solutions are used in the cooling system of thermonuclear facilities and in the alloying of steel and carbides for protective shielding. Usually, isotope ratio variations are determined by mass spectroscopic methods. Here an alternative faster and low cost method for isotope ratio determination is proposed: high-resolution continuum source molecular absorption spectrometry (HR-CS-MAS). Boron isotope amount ratios have been determined by monitoring the absorption spectrum of boron monohydride (BH) in graphite furnace HR-CS-MAS. Bands (0→0) and (1→1) for the electronic transition X1Σ+ → A1Π were evaluated around wavelengths 433.1 nm and 437.1 nm respectively. Partial least square regression (PLS) for analysis of samples and reference materials were applied. For this, a spectral library with different isotopes ratios for PLS regression was built. Results obtained around the 433.1 nm and 437.1 nm spectral regions are metrologically compatible with those reported by mass spectrometric methods. Moreover, a precision and accuracy of the method of ± 0.5 ‰ for the evaluated spectral region around 437.1 nm is reported here. This accuracy and precision is comparable with those obtained by thermal ionization mass spectrometry (TIMS) and multiple collector inductively coupled plasma mass spectrometry (MC-ICP-MS) for boron isotope ratio measurements. T2 - 30. Tag der Chemie CY - Berlin, Germany DA - 05.07.2017 KW - Boron isotopes KW - High-Resolution Continuum Source Molecular Absorption Spectrometry KW - HR-CS-MAS KW - Isotopic shift KW - Boron monohydride KW - Isotope ratio KW - Molecular absorption KW - Memory effect KW - Graphite furnace PY - 2017 AN - OPUS4-41059 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Cuéllar, Pablo T1 - Micromechanics of jet erosion on cohesive soils - A coupled LBM-DEM modelling approach N2 - Here we investigate the physical mechanisms behind the surface erosion of a cohesive granular soil induced by an impinging jet by means of numerical simulations coupling fluid and grains at the microscale. The 2D numerical model combines the Discrete Element and Lattice Boltzmann methods (DEM-LBM) and accounts for the granular cohesion with a contact model featuring a paraboloidal yield surface. Here we review first the hydrodynamical conditions imposed by the fluid jet on a solid granular packing, turning then the attention to the impact of cohesion on the erosion kinetics. Finally, the use of an additional subcritical debonding damage model based on the work of Silvani and co-workers provides a novel insight into the internal solicitation of the cohesive granular sample by the impinging jet. T2 - 8th International Conference on Micromechanics on Granular Media CY - Montpellier, France DA - 03.07.2017 KW - Micromechanical modelling KW - LBM-DEM KW - Jet erosion KW - Granular cohesion KW - Subcritical debonding PY - 2017 AN - OPUS4-41122 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Two calibration-free approaches for analysis of industrial oxides by the laser-induced breakdown spectroscopy T2 - EMSLIBS CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-35143 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Calibration- and Calibration-Free LIBS: Past and Future (invited) T2 - SciX-FACSS CY - Providence, RI, USA DA - 2015-09-27 PY - 2015 AN - OPUS4-35141 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Recent Advancements in Modeling of Laser Induced Plasmas and Supporting Plasma Diagnostics (invited) T2 - EMSLIBS CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-35140 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Janine T1 - Critical pollutant tributyltin in surface water systems T2 - ICCE 2015 CY - Leipzig, Germany DA - 2015-09-20 PY - 2015 AN - OPUS4-35001 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ascher, Lena T1 - Imaging of Eu doped very small iron oxide nanoparticle in atherosclerotic plaques via LA-ICP-MS N2 - Atherosclerotic lesions can be visualized by magnetic resonance imaging (MRI) using very small iron oxide nanoparticles (VSOP). VSOP accumulate in atherosclerotic plaques and thus serve as an atherosclerosis probe. The aim of this project was to image the distribution of europium doped VSOP (Eu-VSOP) by laser ablation ICP-MS in histological thin cuts of the aortic root region of ApoE knockout mouse model that is rich in atherosclerotic plaques. In addition, it was investigated whether VSOP accumulation in the plaques correlates with other biomarkers of inflammation for example macrophages and altered endothelium to assess whether it correlates with instability or vulnerability of the plaque regions. For this purpose, antibodies were labeled with various lanthanide elements and correlated with the Eu-VSOP distribution using LA-ICP-MS in a multiplex measurement mode. A possible correlation of reactive nitrogen species (RNS) with endogenous iron or Eu-VSOP can also be detected by LA-ICP-MS. For this purpose, RNS-specific antibodies were also labeled with lanthanides. T2 - 26. ICPMS-Anwendertreffen CY - Berlin, Germany DA - 03.09.2018 KW - Bioimaging KW - LA-ICP-MS KW - Immunoassay KW - Nanoparticle KW - Labeling PY - 2018 AN - OPUS4-45920 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Benseghier, Z. T1 - Numerical modeling of erosion of cohesive granular material by a fluid flow N2 - The erosion phenomena is the main cause of the most serious incidents observed on earthen hydraulic structures such as dams and dikes. Thus, there is a real need to explore in depth and understand the mechanisms at work in such complex erosional processes for preventing similar risks. The aim of this study is to provide a micromechanical insight into the mechanisms taking place during the erosion of a cohesive granular material driven by a fluid flow, the objectives are summarized as follows: Perform numerical erosion tests. Parallelization of the code (Gpu). Extensive parametric analysis => rely micro parameters (eg. Cohesion) to macro parameters (eg. Soil erodibility, mechanical strengths). T2 - Ecole doctorale ED353, « Sciences Pour l'Ingénieur », Aix-Marseille Université (AMU) et Ecole Centrale de Marseille (ECM) CY - Marseille, France DA - 30.05.2018 KW - Erosion KW - Cohesive soils KW - LBM-DEM simulation PY - 2018 AN - OPUS4-46314 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver T1 - Archaeometrical investigations using synchrotron infrared radiation T2 - Workshop: RICH - Reseaerch Infrastructures for Cultural Heritage CY - Trieste, Italy DA - 2005-12-12 PY - 2005 AN - OPUS4-10932 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Merchel, Silke T1 - Naturwissenschaftliche Untersuchungen von Zeichenmitteln T2 - Das Geheimnis des Jan van Eyck: Niederländische Kunst des 15. Jahrhunderts in Dresden -Gemeinschaftsausstellung der Gemäldegalerie Alte Meister und des Kupferstich-Kabinetts Residenzschloss CY - Dresden, Germany DA - 2005-08-13 PY - 2005 AN - OPUS4-22220 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabin, Ira T1 - DSS: Materials Characterisation by means of IR-ERS, SY µ-FTIR, µ-XRF and SEM T2 - CHRESP Conference CY - Ljubljana, Slovenia DA - 2008-11-10 PY - 2008 AN - OPUS4-18168 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steger, Simon T1 - Non-invasive, spectroscopic study of a modern reverse glass painting N2 - We present the first spectroscopic study on a reverse glass painting form the classic modern period (1905-1955). Marianne Uhlenhuth’s painting “Ohne Titel, 1954” shows characteristics like experimental use of colorants and abstract compositions, which are well-established in classic modern art. Compared to stained glass, reverse glass paintings are viewed in reflected light, hence they reveal strong and intense colors. New inorganic pigments, development of synthetic organic pigments and the simultaneous supersession of well-known ancient colorants result in experimental works and remarkable pigment mixtures in this period of time. An in-situ, non-invasive approach was used to study the pigments and binding media. In-situ measurements were carried out using Raman spectroscopy (i-Raman®Plus, Bwtek Inc., 785 nm, 20× objective, resolution 4 cm-1), X-ray fluorescence (Tracer III-SD, Bruker AXS Microanalysis GmbH, 40 kV, 15 μA), VIS spectroscopy (SPM 100, Gretag-Imaging AG) and DRIFTS: Diffuse Reflection-Infrared-Fourier-Transform Spectroscopy (ExoScan, Agilent GmbH, 4000-650 cm-1, 256 scans, resolution 4cm-1). The pigments consist of inorganic as well as organic materials. Phthalocyanin green (PG7, colour index No. 74260), viridian and emerald green were used for the green areas. The yellow parts consist of chrome yellow and cadmium yellow. Pigment Yellow 1 (C.I. 11680) was used for the dark yellow/orange part. Red areas were characterized by the presence of cadmium and selenium (cadmium red) in the XRF spectrum. Ultramarine was detected in the blue parts. Concerning the violet color PR81 (bluish red, C.I. 45160:1) in mixture with PG7 (bluish green) were identified as main components. We want to outline that PR81 was rarely found in paintings. It was only recorded in the palettes of Lucio Fontana and Mary Cassatt before. The dark violet areas consist of Prussian blue and an unknown red (organic) colorant. Brown iron oxide was identified as the brown pigment. Bone black in mixture with black iron oxide were used as black materials and zinc white and titanium white as white pigments. XRF analysis of the metal color yields intense copper, zinc and nickel peaks (intensity ratio 3:3:1), which corresponds to “new silver” alloy. Barite and chalk are the fillers in this painting. Results of DRIFTS spectra show gum sometimes mixed with protein or oil (metal soaps) as binding media. The results point out that reverse glass paintings from the classic modern period are excellent examples to study the evolution of new pigments and their acceptance in artist’s palettes. T2 - CSI-XL CY - Pisa, Italy DA - 11.06.2017 KW - Pigments KW - Reverse glass painting KW - Spectroscopy PY - 2017 AN - OPUS4-42336 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steger, Simon T1 - Study of modern reverse paintings on glass with Raman Spectroscopy N2 - The technique of painting on the reverse side of glass was rediscovered by artists in the 20th and gained especially in Germany strong popularity. Compared to other techniques (e.g. canvas, mural paintings), the paint layers are applied in reverse succession. The paintings are viewed in reflected light, thus revealing an impressive gloss, luminosity, and depth of color. Reverse glass paintings comprise a non-porous glass substrate and multi-layered paint system, hence delamination of the paint layer is the most common disfigurement. Scientific investigation of the material provides important information for appropriate conservation concepts. Transport of the precious and fragile objects to the lab is often not feasible. Therefore, in-situ, non-invasive analysis is necessary to analyze colorants and binders. Based on modern reverse glass paintings, we clarify advantages and limitations of mobile Raman spectroscopy for the identification of colorants. We compare the use of mobile Raman spectroscopy with other methods of our mobile lab (i.e. X-ray fluorescence (XRF), Diffuse Reflectance Fourier Transform Infrared Spectroscopy (DRIFTS). T2 - 9th International Congress on the Application of Raman Spectroscopy in Art and Archaeology (RAA2017) CY - Évora, Portugal DA - 24.10.2017 KW - Reverse glass painting KW - Raman spectroscopy KW - Synthetic organic pigments PY - 2017 AN - OPUS4-42825 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang T1 - Evaluation of material emissions for museum equipment – BEMMA-Scheme N2 - Museums worldwide are equipped with different display cases. Exhibit display cases should protect cultural objects from dust as well as from mechanical and physical damage. To ensure a stable climate inside the display cases, a low air exchange rate is maintained. Typically air exchange rates are often smaller than 0.1 d 1, which can result in rising concentrations of potential harmful immissions inside of the display cases due to emissions from materials. Especially high concentrations of organic acids, which can emit from e.g. sealing materials, can produce damage of cultural objects. In 2012 BAM introduced a procedure witch is called: BEMMA-Scheme (Bewertung von Emissionen aus Materialien für Museumsausstattungen) which stands for: “Assessment of Emissions from Materials for Museum Equipment”. Micro chambers are used for VOC emission tests of display case construction materials, e.g. textiles, plastics, sealing material, coatings and others. Each sampling procedure is carried out in duplicate. Emissions like formic acid, acetic acid, formaldehyde and oximes are excluded and the sum of emissions of VVOCs, VOCs and SVOCs is limited. For a positive assessment all listed criteria must be fulfilled; otherwise the display construction material fails the BEMMA scheme. The BEMMA scheme is not a guarantee for an emission free display case, but a necessary requirement for the choice of suitable materials for emission and immission reduced display cases. The basic evaluation for the values used for first assessments were a ZIM-project with nearly 100 tested materials. In-between more than 100 new materials were tested and enlarged the knowledge about material emissions from display case materials. Mainly silicone sealing materials were tested due to the fact that this group of material have the highest emissions. With regard to the testing procedure only construction materials were evaluated, not the display cases their self. Nevertheless in combination with the certificate also designed by BAM additionally the further steps of construction can be taken into account. So other factors such as age and storage time of materials, tightness respectively air change rate, air condition or ventilation of display cases can be included in the evaluation. T2 - Airmon: 9th International Symposium on Modern Principles of Air Monitoring and Biomonitoring CY - Dresden, Germany DA - 11.06.2017 KW - Display cases KW - BEMMA KW - Museum KW - Emission KW - VOC PY - 2017 AN - OPUS4-41937 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonnerot, Olivier T1 - A non-invasive study of the illuminated manuscript MS. Fr. 9084: one or two palettes? N2 - The manuscript of the History of Outremer by William of Tyre stored at the BNF (ms. fr. 9084) is believed to have been illustrated by two different hands. Indeed, the first five miniatures of this manuscript appear to be very different from the last seventeen, which were supposedly painted by an artist known as the "Hospitaller Master". This painter worked on at least two manuscripts in Paris between 1276 and 1280, and eight more in Saint Jean d'Acre before 1291. During his stay in the Latin Kingdom of Jerusalem, his palette changed and reached its most important development in the Manuscript of the History of Outremer, maybe influenced by the colourful crusader style of the first five miniatures. The present work aims at identifying the pigments used on both parts of the manuscripts and see whether they are the same for both artists or not. For that, portable XRF analysis was used directly at the Bibliothèque National de France in Paris, where the manuscript is stored. This allowed a quick, non destructive and non invasive study of the manuscript. Significant differences were observed in the compositions of some pigments indeed, in particular for the red and green, showing the use of different palettes. This could indicate that the Hospitaller Master not only brought his knowledge and style, but also probably part of his palette of pigments with him when moving to Saint Jean d'Acre. T2 - MANUSCRIPTS in the MAKING: Art and Science CY - Cambridge, UK DA - 08.12.2016 KW - Miniature KW - Pigment KW - XRF PY - 2016 AN - OPUS4-41529 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kindzorra, Emanuel T1 - Palimpsest Manufacture: Effects on the ink fingerprint T2 - Technart 2015 CY - Catania, Italiy DA - 2015-04-27 PY - 2015 AN - OPUS4-34409 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steger, Simon T1 - Development of a methodical approach for in-situ analysis of modern reverse paintings on glass N2 - The technique of painting on the reverse side of glass was rediscovered by artists in the early 20th century and gained great popularity, especially in Germany. In contrast to other paint techniques (e.g. panel and mural painting), the paint layers are applied in reverse succession starting with the foremost paint layer and ending with the primer (backmost layer). The paintings are viewed in reflected light, thus revealing an impressive gloss, luminosity and depth of colour. Scientific investigation of the material provides important information for appropriate conservation concepts. Transport of the precious and fragile objects to the lab is often not feasible. Therefore, in-situ, non-invasive analysis is necessary to analyse colorants and binders. However, some analytical problems need to be considered: due to the reverse paint stratigraphy in reverse paintings on glass, the measured layer is always the backmost one. The analytical possibilities are extremely reduced, when the back is covered by a metal foil (or by paper, carton etc.). However, measurements through the glass (using Raman and VIS) can still yield information on the colourants of the front layer. When the paint layer is accessible, we start our procedure using X-ray fluorescence (Tracer III-SD, Bruker AXS Microanalysis GmbH, 40 kV, 15 μA) and VIS reflectance spectroscopy (SPM 100, Gretag-Imaging AG). Both techniques provide first information on the inorganic colourants. Raman measurements (i-Raman®Plus, Bwtek inc., 785 nm, 50× objective, resolution 4 cm-1) are then carried out to clarify uncertain XRF measurements and to identify synthetic organic pigments (SOP). Diffuse Reflection-Infrared-Fourier-Transform Spectroscopy (DRIFTS; ExoScan, Agilent GmbH, 4000–650 cm-1, 500 scans, spectral resolution 4 cm-1) is used for the classification of the binders. Moreover, it may help to identify SOP, when fluorescence dominates the Raman signal. This analytical sequence yields the best results, when time is the limiting factor. We present two in-situ studies of the paintings “Kreuzabnahme” (1914-15) by Carlo Mense and “Stadt am Morgen” (1921) by Walter Dexel. The painting “Kreuzabnahme” is an outstanding piece in Mense’s ɶuvre, because the glass plate was painted on both sides (Fig. 1). The results of the back-side show mainly inorganic pigments: basic lead white, talc, red and brown ochre, cinnabar, chrome yellow, viridian, ultramarine blue, Prussian blue and bone black. The classification of binding media using DRIFTS yields positive results for drying oil. Acrylic resin could be identified in two areas, resulting from a previous restauration treatment. For the front side painting, Mense used basic lead white, cinnabar, chrome yellow and umbra as pigments and oil as binder. Measurements of the abstract painting “Stadt am Morgen” by Walter Dexel show zinc white, basic lead white, chalk, cinnabar, red lead, strontium yellow, cadmium yellow, cobalt blue, Prussian blue, ultramarine blue, brown ochre and bone black as pigments. Moreover, synthetic alizarin (PR83) was identified as dark red colorant. The results of DRIFTS classify oil as binding media. We conclude that, the use of complementary spectroscopic methods yields the best results for in-situ analysis of reverse paintings on glass. T2 - 3rd International Conference on Innovation in Art Research and Technology CY - Parma, Italy DA - 26.03.2018 KW - Modern painting KW - Non invasive analysis KW - Raman spectroscopy PY - 2018 AN - OPUS4-44780 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steger, Simon T1 - In-situ Raman spectroscopic study of pigments used in modern reverse paintings on glass N2 - The technique of painting on the reverse side of glass was rediscovered by artists in the early 20th century. The artist group “Der Blaue Reiter” around Wassily Kandinsky and Franz Marc got in touch with this technique in 1908 and 1909. In the following years it gained great popularity, especially in Germany. Nevertheless, the technique has not received its due appreciation in art history. It was considered as stained glass. However, the paint layers are applied cold, hence this artistic technique doesn’t involve a firing step. Our multidisciplinary project investigates the art historic backgrounds, the painting techniques and materials of modern reverse paintings on glass. More than 1000 paintings from ~100 artists were discovered in the framework of our project. A selection of 60 paintings could be analyzed using non-invasive, in-situ methods such as Raman and VIS spectroscopy, Diffuse Reflectance Fourier Transform Infrared Spectroscopy (DRIFTS) and X-ray fluorescence (XRF). In this paper we want to point out the key role of Raman spectroscopy for our research. It offers the unique opportunity to measure paint layers from both sides. (front = through the glass; reverse = directly on the paint layer). T2 - XIII International GeoRaman Conference CY - Catania, Italy DA - 10.06.2018 KW - Raman spectroscopy KW - Reverse painting on glass KW - Non-invasive analysis PY - 2018 AN - OPUS4-45400 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nöller, Renate T1 - Analyses of pigments, paints and inks from silk road sites N2 - One of the most important collections of manuscripts and wall paintings from sites of the northern Silk Road, discovered at the beginning of the 20thC, are deposited in Berlin. The fragments represent a broad spectrum of scripts, languages, and painting styles depending on the region of origin and purpose of dissemination. The manufacturing material reflects the various influences in the oasis sites. Based on analyses of some pigments, examples are posed. T2 - TechnArt 2015 CY - Catania, Italy DA - 27.04.2015 KW - Pigments KW - Analyses of inks KW - Silk Roas Sites KW - Wall paint PY - 2015 AN - OPUS4-44793 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nöller, Renate T1 - The writing materials of the Silk Road book cultures in Turfan – Analysis of inks and pigments N2 - Manuscript fragments discovered in the oasis of Turfan and in other sites of present-day China in the beginning of the 20th century by A. Grünwedel and A. von Le Coq, represent one of the most fascinating cultural testimonies of people who both lived there and travelled along the trade routes between East and West. To determine the different materials used for writing and painting the Chinese, Sanskrit, Manichaean, Syrian, Sogdian, Tocharian and Uighur fragments of the Berlin collection, analysis of inks and pigments were conducted using non-destructive methods. The research was funded by the German Research Foundation DFG for a period of three years. The identification of specific techniques of preparation allows manuscript groups and sub-groups to be specified, aiding their cultural assignment. This is important for further cultural studies, for the development of conservation strategies and the identification of forgeries. T2 - European Cultural Heritage Research and Innovation “Zukunftsort EUROPA” CY - British Embassy in Berlin, Germany DA - 15.09.2014 KW - XRF-analyses KW - Ink analyses KW - Turfan manuscripts PY - 2014 AN - OPUS4-44787 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ghigo, Tea T1 - Understanding the technological evolution of writing materials. Scientific systematic study of inks from Coptic manuscripts N2 - While studying the socio-geographic history of inks, division 4.5 of the BAM (Bundesanstalt für Materialforschung und Prüfung) together with the Centre for the Study of Manuscript Cultures in Hamburg has developed a protocol for ink analysis. It consists of a primary screening to determine the type of the ink and a subsequent in-depth analysis using several spectroscopic techniques: XRF, FTIR, and Raman. In most cases, we can obtain satisfactory results using a non-invasive protocol. However, mixed inks that contain no metals evade such a protocol. These inks constitute a heterogeneous group of media used especially in the Middle East and the Islamicate world since at least the 10th century; they are characterized by blending carbon ink and tannins, with or without the addition of vitriol. Our own research aims primarily at recreating a socio-geographic history of inks, parchment, and papyrus and includes the comparative analysis of the writing materials of the Dead Sea Scrolls, ink and papyrus in Ancient and Hellenistic Egypt, and inks in documents from various contemporary medieval communities in Fustat (first nucleus of Cairo). During many years of study, we concluded that the continuous production of Coptic manuscripts from late Antiquity to the Middle Ages offers a unique opportunity for historical study of the ink in a large geographic area. Thanks to the collaboration with the ERC project “PAThs” (www.paths.uniroma1.it), based at the University of Rome La Sapienza, and within the activities of a PhD research dedicated to this topic, we therefore created a new branch of our project focused entirely on the analysis of Coptic inks, pigments, and dyes. This pioneering systematic study of writing materials coming from a specific area and time frame (5th-10th century) aims not only at a better understanding of the complex Coptic multicultural and plurilingual society, but also and mainly at clarifying the links among the Coptic and other societies between the ancient and medieval eras. Finally, it will cast light on the history of the technological development of inks in the eastern world, from Antiquity to the middle ages. T2 - Konferenz: Scientific Methods in Cultural Heritage Research, Gordon Research Conference CY - Castelldefels, Spain DA - 22.07.2018 KW - Coptic KW - Ink KW - Manuscript PY - 2018 AN - OPUS4-46024 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Cohen, Zina T1 - Composition analysis of writing materials in Geniza fragments N2 - The Cairo Geniza is an “archive” discovered in the 19th century in Ben Ezra Synagogue in Fustat, a district in Old Cairo (Egypt), located south of the center of modern Cairo. The giant collection of mostly Jewish documents that vary in genres, languages and writing supports contains a large number of early medieval Hebrew manuscripts, mostly in fragmentary form. The larger part of the Cairo Geniza is stored today in the Cambridge University Library (CUL). The Geniza provides sources for the literary, linguistic, historical studies of the various aspects Jewish life. As the documents attest, at least two Jewish communities co-existed in Fustat up to 11th century: a so-called Babylonian and Palestinian. These communities had different leaders, different traditions and lived independently. The differences seem to manifest themselves also in the paleographical, codicological and some material properties of the manuscripts produced by each community. The aim of this project is to compare the inks used in the Jewish documents depending on different variables: support (paper, parchment), purpose of the manuscript (legal, private, religious), provenance of the scribe. For the determination of the inks type and composition we had to choose non-invasive, non-destructive and portable techniques to analyse the corpus directly in the CUL. The analyses were carried out with a mobile energy dispersive micro-X-ray spectrometer ArtTAX® (Bruker GmbH, Berlin, Germany), which consists of an air-cooled, low-power molybdenum tube, polycapillary X-ray optics (measuring spot size 70 µm in diameter), an electrothermally cooled Xflash detector, and a CCD camera for sample positioning (Bronk et al 2001, Hahn et al. 2010). All measurements are executed using a 30 W low-power Mo tube, 50 kV, 600 µA Mo tube, and with an acquisition time of 15 s (live time) to minimize the risk of damage (Fig. 1, 2). Fig. 1: XRF spectrometer probe above a manuscript fragment Fig. 2: Typical element profile of a XRF linescan The Dino Lite digital stereomicroscope (Fig. 3) features built-in LED illumination at 395 nm and 940 nm and a customized external white light source. During use, the microscope is fastened to a small tripod or mounted on a Plexiglas ring holder that incorporates a white light source. Fig. 3: Dino Lite digital stereomicroscope Fig. 4: Details of one fragment (T-S 16.124) observed with the Dino microscope (x20). On the left, when illuminated with NIR (Near-Infrared, 940 nm) light, the ink fades, indicating iron-gall ink. On the right, the image under NIR light does not change. It is carbon ink. On example of these studies is the manuscript T-S 16.124 (Cambridge University Library, Fig. 5) whom belongs to the third corpus. It is a deed, written in Hebrew, dated from 1328 (= 1017 CE) and witnessed by a very high number of people (6) comparing to the standard of similar documents (between 2 and 3), from at least two different Jewish communities in Fustat (trans congregational). The verso is written in Arabic (Bareket 1999). Fig. 5: Manuscript T-S 16.124 (Cambridge University Library) To compare the inks, we used the fingerprint model. This method relies on the determination of characteristic elemental compositions and represents the amount of a minor constituent relative to the main component, iron in iron gall ink (Malzer et al. 2004, Hahn et al. 2004, Rabin et al 2014). However, a calculation of a fingerprint based on XRF measurements is not possible in the case of carbon ink since carbon, its main component, cannot be detected with this technique. Fig. 6: Ink fingerprint T-S 16-124 (recto) normalized to iron (Fe) Conclusion We show that using reflectography and XRF analysis it is possible to sort the inks according to their type. In the case of the iron-gall inks, use of the ink fingerprint, i.e. amount of the vitriol components normalized to iron we can make direct comparisons of the ink composition. We would like also to stress that though the methods of material analysis listed above have been successfully employed in the field of cultural heritage and conservation including ancient and medieval manuscripts they have not yet been used to study fragments from the Cairo Genizah. Therefore, we believe that this research project is a pioneering study that will provide new insights into the history of Hebrew writing materials, their production techniques and materials and, thus, contribute new data to the field of Hebrew paleography. T2 - Konferenz DESY “Archäometrie und Denkmalpflege 2018” CY - Hamburg, Germany DA - 20.03.2018 KW - Ink KW - XRF Analysis KW - Manuscript PY - 2018 AN - OPUS4-46042 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Cohen, Zina T1 - Ink analysis in Cairo Geniza fragments N2 - The Cairo Geniza is an “archive” discovered in the 19th century in Ben Ezra Synagogue in Fustat, a district in Old Cairo (Egypt), located south of the center of modern Cairo. The giant collection of mostly Jewish documents that vary in genres, languages and writing supports contains a large number of early medieval Hebrew manuscripts, mostly in fragmentary form. The larger part of the Cairo Geniza is stored today in the Cambridge University Library. The Geniza provides sources for the literary, linguistic, historical studies of the various aspects Jewish life. As the documents attest, at least two Jewish communities co-existed in Fustat up to 11th century: a so-called Babylonian and Palestinian. These communities had different leaders, different traditions and lived independently. The differences seem to manifest themselves also in the paleographical, codicological and some material properties of the manuscripts produced by each community. My work addresses the ink composition in the documents attributed to the members of these communities. For the determination of the inks type and composition I employ reflectography and µ-XRF spectrometry, respectively. The preliminary typological studies indicate that iron-gall inks were found predominantly in the manuscripts attributed to the Palestinian community. T2 - Konferenz WCJS CY - Jerusalem, Israel DA - 06.08.2017 KW - Ink KW - Manuscript KW - XRF analysis PY - 2017 AN - OPUS4-46041 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank A1 - Romero Navarrete, J. A. T1 - Assesing rail damage in turns due to lateral load transfer N2 - A testing procedure is proposed and used, to estimate the rail damage potentials of variations in both, the height of the cargo´s center of gravity and the railway car suspension´s spring constant. The experimental setup consisted of a tilt table that slowly exerted an increasing lateral acceleration on a two-axle bogie-type vehicle equipped with a spring supported container. The potential damaging effect derived from the resulting lateral load transfer, was assessed on the basis of the fourth-power law. Results suggest that the cargo having a higher center of gravity could be more damaging to the outside rail when compared with the effect of the shorter center of gravity of the cargo, in arrange from0.94% to 3.17%, as a function of the spring constant of the suspension. Consequently, and comparatively, there would be a long-term damaging effect on the rail when having a cargo with a higher center of gravity, so that specific cargo, having a high center of gravity, would be more aggressive to the infrastructure. On the other hand, for the range of time rate changes of the lateral acceleration, it was not found a consistent trend regarding the effect of the value of the spring constant on the magnitude of the load transfers. T2 - ASME 2024 CY - Portland, OR, USA DA - 17.11.2024 KW - Rail demage KW - Lateral load transfer PY - 2024 AN - OPUS4-61784 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilling, O. A1 - Neumann, Martin T1 - System of Quality Assurance Measures in Manufacturing and Operation of Dual Purpose Casks for Spent Nuclear Fuel and High Level Waste in Germany N2 - German spent nuclear fuel and high level waste is stored in dry conditions in interim storage facilities until a final repository will be ready for operation in the future. Dual purpose casks are used for the packaging of the materials to ensure transportability at any time during long-term interim storage and fulfilling both requirements from interim storage as well as transport. Germany’s 2011 decision to phase out utilization of nuclear energy has led to a high demand for casks for decommissioning power plants as quickly as possible. Cask serial production will continue at a high level for the next few years. In the process, a system of quality assurance measures ensures that every cask reliably complies with design specification according the transport approval certificate and storage license. When the first casks were manufactured in Germany about 40 years ago, quality assurance was oriented towards pressure vessel and general nuclear manufacturing. The system was continuously adapted to the state of the art. In particular serial production, globalization of manufacturing and deep supplier chains had to be taken into account. The system of quality assurance measures applied today for cask manufacturing shall be presented here. The quality assurance measures can be categorized as system-related and design-related. With respect to transport regulations for example, they are independently approved and monitored by the competent authority BAM and its authorized inspection experts. The qualification of the applicant is reviewed first in the context of the design approval procedure and then periodically. The qualification of component and cask manufacturers is also checked at the start of manufacturing and then periodically. Before the start of manufacturing documents such as quality plans are pre-assessed. Manufacturing and inspection are then performed according to the pre-assessed documents. Cask manufacturing is completed by a final inspection before commissioning. Periodic inspections during operation ensure preservation of the properties specified in the approval certificate over package life time. The type and the time interval of periodic inspections depend on the use of the package. For transport after interim storage a system of specific tests and inspections is prescribed. T2 - 20th International Symposium on the Packaging and Transportation of Radioactive Materials (PATRAM 22) CY - Juan-les-Pins, France DA - 11.06.2023 KW - Radioactive material KW - Quality Assurance Measures KW - Dual Purpose Casks KW - Independent Surveillance PY - 2023 AN - OPUS4-57705 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Konthur, Zoltán T1 - Enzyme-Based Electrochemical Detection of Fumonisins Applying Amperometric Sensing N2 - Fumonisins represent a class of toxic secondary metabolites produced primarily by Fusarium species, notably F. verticillioides and F. proliferatum, though Aspergillus niger can also produce these mycotoxins. They are most commonly found contaminating maize, but other grains are also at risk. Dietary exposure to fumonisins poses serious health risks to both humans and livestock, prompting the European Commission to set regulatory limits on their presence in food and animal feed. Traditional detection methods, such as chromatography, are often costly, are laboratory based and require specialized expertise. To address the need for simpler, more accessible detection methods, portable electrochemical biosensors present a promising solution. In this study, we introduce a novel enzymatic approach for fumonisin detection using amperometric sensing. Here, a recently discovered fumonisin amine oxidase (AnFAO) from Aspergillus niger, which catalyses the oxidative deamination of fumonisins and generates hydrogen peroxide, was produced recombinantly in Escherichia coli. In our hands, the enzyme exhibited higher specific activity toward Fumonisin B1 compared to Fumonisin B2 at the same substrate concentration (0.0037 U/mg and 0.0014 U/mg at 25 µM substrate, respectively). We demonstrated that enzyme activity correlates with both enzyme and substrate concentrations. To detect Fumonisin B1, the enzyme was covalently attached to magnetic particles, and hydrogen peroxide production was measured amperometrically in a flow injection system with Prussian blue carbon electrodes. This method enabled the quantification of Fumonisin B1 concentrations as low as 1.5 µM and proved that recombinant AnFAO effectively deaminated fumonisins even in its immobilized form. These results highlight AnFAO’s potential for developing an enzyme-based electrochemical biosensor to detect fumonisin contamination in food and feed products. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Immunoassay KW - Mycotoxin KW - Electrochemistry KW - Antibody KW - Biosensor PY - 2025 AN - OPUS4-63496 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Waske, Anja T1 - A unique authenticator for additively manufactured parts derived from 3D microstructural information N2 - Additive manufacturing (AM) is rapidly emerging from rapid prototyping to industrial production [1]. Thus, providing AM parts with a tagging feature that allows identification, like a fingerprint, can be crucial for logistics, certification, and anti-counterfeiting purposes since nearly any geometry can be produced by AM with stolen data or reverse engineering of an original product. However, the mechanical and functional properties of the replicated part may not be identical to the original ones and pose a safety risk [2]. Several methods are already available, which range from encasing a detector to leveraging the stochastic defects of AM parts for the identification, authentication, and traceability of AM components. The most prevailing solution consists of local process manipulation, such as printing a quick response (QR) code [3] or a set of blind holes on the surface of the internal cavity of hollow components. Local manipulation of components may alter the properties. The external tagging features can be altered or even removed by post-processing treatments. Integrating electronic systems [4] in AM parts can be used to identify and authenticate components with complex or customized geometries. However, metal-based AM, especially in powder bed fusion (PBF-LB/M) techniques, has a strong shielding effect that interferes with the communication between the reader and the transponder. Our work suggests a methodology for the identification, authentication, and traceability of AM components using microstructural features in AM components. We will show a workflow that includes analysing 3D micro computed tomography data and selecting a set number of voids that fulfil the identification criteria. We will show the results this workflow produces for a series of 20 Al-based cuboid samples with identical processing parameters and discuss their prospects and limitations. The workflow can help to establish a non-tamperable connection between an additively manufactured part and its digital data and hence link the physical and the digital world. T2 - MSE Konferenz CY - Darmstadt, Germany DA - 24.09.2024 KW - Additive Manufacturing KW - Fingerprint KW - Computed tomography PY - 2024 AN - OPUS4-62288 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kemmler, Samuel T1 - Particle resolved simulations of piping erosion in suction bucket foundations N2 - This poster provides an overview of the recent advances in simulating piping erosion during the installation process of a suction bucket foundation. The lattice Boltzmann method is coupled with the discrete element method. Numerical results are presented for three different suction conditions. T2 - 5th International Symposium on Geomechanics from Micro to Macro CY - Grenoble, France DA - 23.09.2024 KW - Suction bucket foundation KW - Coupled fluid-particle simulation KW - Offshore wind support structure KW - High-performance computing PY - 2024 AN - OPUS4-62375 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seifert, Lando T1 - Das Meerwasserlabor am Eidersperrwerk N2 - Das Meerwasserlabor (Laborcontainer) ist eine Remote-fähiges Elektrochemie-Labor mit entfeuchtungsfähiger Klimatisierung in dem eine Vielfalt an experimentellen Möglichkeiten besteht. Das Alleinstellungsmerkmal ist der Meerwasser-Bypass, durch den eine Besiedlung und Erhalt von Salzwasser- bzw. Brackwasserbewuchs (Bakterien, Algen, Tiere, Pilze, etc.) möglich ist. Der jährliche Verlauf der Meeresumwelt wird dadurch abgebildet. T2 - Leitprojekt H2Mare Verbundtreffen PtX-Wind & TransferWind CY - Frankfurt am Main, Germany DA - 05.12.2024 KW - Offshore Corrosion KW - Marine Corrosion KW - Corrosion KW - Green Hydrogen PY - 2024 AN - OPUS4-62054 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Monavari, Mehran A1 - Albakri, Bashar T1 - Retrieval-Augmented Generation (RAG) for Digitalization of Quality Infrastructure Assets. Use case: Digital Reference Material Documents N2 - This poster presents a novel approach to digitalizing quality infrastructure (QI) assets using Retrieval-Augmented Generation (RAG). QI assets, such as standards, certificates, and product passports, are typically available only in human-readable formats like PDFs. Converting these documents into machine-readable formats (e.g., XML) is labor-intensive, requiring the definition of ontologies and manual data entry. The proposed method leverages RAG, an advanced technique combining information retrieval and text generation, to automate this process. Specifically, the approach involves: * Retrieval Model: Extracting relevant text chunks from large document collections based on semantic similarity. * Generation Model: Generating machine-readable formats (e.g., XML) from the retrieved text using predefined ontologies. The poster demonstrates this method by converting BAM Certificates of Reference Materials into a Digital Reference Material Document (DRMD) schema. Future work aims to further automate ontology creation using machine learning and large language models (LLMs), reducing manual effort and accelerating the generation of digital assets essential for Q-X Dataspace and machine-readability. N2 - In diesem Poster wird ein neuartiger Ansatz zur Digitalisierung von Qualitätsinfrastrukturen (QI) unter Verwendung der Retrieval-Augmented Generation (RAG) vorgestellt. QI-Assets, wie z.B. Normen, Zertifikate und Produktpässe, sind in der Regel nur in menschenlesbaren Formaten wie PDFs verfügbar. Die Konvertierung dieser Dokumente in maschinenlesbare Formate (z. B. XML) ist arbeitsintensiv und erfordert die Definition von Ontologien und die manuelle Dateneingabe. Die vorgeschlagene Methode nutzt RAG, eine fortschrittliche Technik, die Information Retrieval und Textgenerierung kombiniert, um diesen Prozess zu automatisieren. Der Ansatz umfasst im Einzelnen: * Retrieval-Modell: Extraktion relevanter Textabschnitte aus großen Dokumentensammlungen auf der Grundlage semantischer Ähnlichkeit. * Generierungsmodell: Generierung maschinenlesbarer Formate (z.B. XML) aus dem abgerufenen Text unter Verwendung vordefinierter Ontologien. Das Poster demonstriert diese Methode anhand der Konvertierung von BAM-Zertifikaten für Referenzmaterialien in ein Schema für digitale Referenzmaterialdokumente (DRMD). Zukünftige Arbeiten zielen darauf ab, die Ontologieerstellung mit Hilfe von maschinellem Lernen und großen Sprachmodellen (LLMs) weiter zu automatisieren, um den manuellen Aufwand zu reduzieren und die Generierung digitaler Assets zu beschleunigen, die für den Q-X Datenraum und Maschinenlesbarkeit unerlässlich sind. T2 - QI-Digital Forum 2024 CY - Berlin, Germany DA - 09.10.2024 KW - Digitalization KW - Quality Infrastructure KW - Retrieval-Augmented Generation KW - Digitalisierung KW - Qualtitätsinfrastruktur KW - Large Language Models KW - XML PY - 2024 AN - OPUS4-61733 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fayet, G. T1 - First models to predict thermal decomposition properties of possible self-reactive substances based on industrial datasets N2 - Self-reactive substances are unstable chemical substances which can easily decompose and may lead to explosion. For this reason, their thermal stability properties are required within regulatory frameworks related to chemicals in order to assess their hazardous properties. Due to the fast development and availability of computers, predictive approaches like QSPR models are increasingly used in the evaluation process of hazardous substances complementary to experiments. In that context, the HAZPRED project (2015-2018) aimed to develop QSPR models to predict physical hazards of substances to fill the lack of knowledge on these hazardous substances quickly. An experimental campaign, based on 50 samples provided by Industrial producers, was carried out on potential self-reactive substances, for which no QSPR model already existed. Their heats of decomposition were characterized using differential scanning calorimetry in homogeneous experimental conditions. QSPR models were derived using the GA-MLR method (using a genetic algorithm and multi-linear regressions) using molecular descriptors calculated by Dragon software based on both 3D molecular structures from density functional theory (DFT) optimizations, to access three-dimensional descriptors, and SMILES codes, favoring the access to simpler models, requiring no preliminary quantum chemical calculations. All models respected the OECD validation guidelines for regulatory acceptability of QSPR models. They were tested by internal and external validation tests and their applicability domains were defined and analyzed. If improved models should be expected with larger database (and a better ratio between size and chemical diversity), these first models already represent a screening tool capable to access early reactive hazards. T2 - 19th International Workshop on Quantitative Structure-Activity Relationships in Environmental and Health Sciences CY - Online meeting DA - 07.06.2021 KW - QSPR KW - Self-reactive substances KW - Thermal decomposition PY - 2021 AN - OPUS4-53178 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Griesche, Axel T1 - Laser-Induced Breakdown Spectroscopy (LIBS) for Hydrogen Measurements in Steel N2 - Laser-induced breakdown spectroscopy (LIBS) allows for a time and spatially resolved almost non-destructive in situ measurement of hydrogen in metals. A surface pretreatment is not necessarily needed. We measured quantitatively hydrogen in steel samples, which were charged either electrochemically or by high-pressure hydrogen gas and compared the results. Further, the feasibility of quantitative hydrogen line scan measurements was demonstrated by measuring hydrogen at water jet cut surfaces. The hydrogen concentrations measured with the help of LIBS were compared with CGHE measurements. It was observed that hydrogen can be reliably measured with LIBS for concentrations larger than 2 wt.-ppm. The results show that LIBS is a promising technique for time- and spatially resolved measurements of hydrogen in steel and steel weldments. Results of time-dependant hydrogen permeation experiments will also be presented. T2 - H2MSE 2025 CY - Siegburg, Germany DA - 11.02.2025 KW - LIBS KW - Hydrogen Measurements KW - Steel PY - 2025 AN - OPUS4-62561 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oster, Simon T1 - Multispectral in-situ monitoring of a L-PBF manufacturing process using three thermographic camera systems N2 - The manufacturing of metal parts for the use in safety-relevant applications by Laser Powder Bed Fusion (L-PBF) demands a quality assurance of both part and process. Thermography is a nondestructive testing method that allows the in-situ determination of the thermal history of the produced part which is connected to the mechanical properties and the formation of defects [1]. A wide range of commercial thermographic camera systems working in different spectral ranges is available on the market. The understanding of the applicability of these cameras for qualitative and quantitative in-situ measurements in L-PBF is of vital importance [2]. In this study, the building process of a cylindrical specimen (Inconel 718) is monitored by three camera systems simultaniously. These camera systems are sensitive in various spectral bandwidths providing information in different temperature ranges. The performance of each camera system is explored in the context of the extraction of image features for the detection of defects. It is shown that the high temporal and thermal process dynamics are limiting factors on this matter. The combination of different spectral camera systems promises the potential of an improved defect detection by data fusion. T2 - LASER SYMPOSIUM & ISAM 2021 CY - Online meeting DA - 07.12.2021 KW - Laser Powder Bed Fusion KW - Thermography KW - In-situ Monitoring KW - Defect detection PY - 2021 AN - OPUS4-54141 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Griesche, Axel T1 - In situ Measurement of Hydrogen in Steel using Laser‑induced Breakdown Spectroscopy (LIBS) N2 - The ISO 3690 standard “Determination of hydrogen content in arc weld metal” requires a thermal activation of the diffusible hydrogen in a piece of weld metal for the subsequent ex situ concentration measurement by carrier gas hot extraction CGHE or thermal desorption spectroscopy (TCD). Laser-induced breakdown spectroscopy (LIBS) offers a time and spatially resolved, almost non-destructive, in situ measurement of hydrogen at surfaces without sample preparation. We measured hydrogen in steels, which were charged either electrochemically or by high-pressure hydrogen gas and compared the results. Further, the feasibility of quantitative hydrogen line scan measurements with LIBS was demonstrated by measuring hydrogen at water jet cut surfaces. The hydrogen concentrations measured with the help of LIBS were compared with CGHE measurements. It was observed that hydrogen can be reliably measured with LIBS for concentrations larger than 2 wt.-ppm. The maximum hydrogen concentration achieved using electrochemical charging was 85.1 ppm. The results show that LIBS is a promising technique for time- and spatially resolved measurements of hydrogen in steels. T2 - 2025 European Winter Conference on Plasma Spectrochemistry CY - Berlin, Germany DA - 02.03.2025 KW - Hydrogen measurement KW - LIBS KW - Spatial resolution KW - Temporal resolution PY - 2025 AN - OPUS4-62699 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Taparli, Ugur Alp T1 - Development of a LIBS analysis system for time- and spaceresolved in situ measurement of chemical compositions during GTA-Welding N2 - A laser induced breakdown spectroscopy (LIBS) system was combined with the Gas Tungsten Arc (GTA) Welding process for the in situ measurement of chemical compositions in austenitic stainless steels during welding. The purpose of this project is to develop a prototype of an online chemical composition control system for welding applications. One of the use cases of this new LIBS-based measurement system can be the controlling of potentially dangerous emissions during the welding process in order to improve the working safety conditions. Further, the control of the weld pool composition allows governing the weld pool solidification behavior and thus allows reducing the resultant susceptibility for solidification cracking. The composition of the weld seam is from the metallurgical point of view the most critical parameter for the occurrence of weld defects1. Conventional inspection methods for weld seams as e.g. ultrasonic inspection are ex situ and cannot prevent the defects. For that reason automated in situ analysis systems for weld defect detection are much more efficient2. Beyond that, the proposed LIBS-based analysis system allows to study the correlation between the occurrence of weld defects and the chemical composition of the weld pool or the region where solid and liquid phase coexist. T2 - The 9th International Conference on Laser-Induced Breakdown Spectroscopy (LIBS 2016) CY - Charmonix, France DA - 12.09.2016 KW - In situ measurement KW - GTA-Welding KW - LIBS PY - 2016 AN - OPUS4-37417 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pignatelli, Giuseppe T1 - Optical emission spectroscopy as monitoring tool for ded N2 - This presentstion explains how optical emission spectroscopy can be exploited to on line monitor a DED printing production. This technique is tested printing on a substrate with artificial defects. T2 - 1st Workshop on In-situ Monitoring and Microstructure Development in Additive Manufacturing CY - Online meeting DA - 10.12.2020 KW - Monitoring KW - Spectroscopy KW - Analytical chemistry KW - Additive manufacturing PY - 2020 AN - OPUS4-51877 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Konthur, Zoltán T1 - Bundesweite Bestimmung anthropogener Marker im Rohabwasser mittels Immunoassays N2 - Die von der Europäischen Kommission im Jahr 2021 empfohlene, systematische Abwasserüberwachung mittels PCR-Techniken wird als ein wirksames Frühwarnsystem für künftige Pandemien durch Viren und andere Krankheitserreger betrachtet. Ein generelles Problem bei jeder quantitativen Messung von Parametern im Abwasser ist die starke Schwankung des Abwasservolumens und seiner Zusammensetzung im Tages- und Jahreszeitenverlauf. Um die Konzentrationsbestimmungen von Krankheitserregern im Abwasser in Korrelation mit menschlichen Einträgen setzen zu können, könnten sog. "anthropogene Marker" eine herausragende Rolle spielen, deren Eintrag ins Abwasser menschlichen Ursprungs sind. Im Projekt werden mittels ELISA die Konzentrationen ausgewählter anthropogener Marker in deutschlandweit gesammelten Abwasserproben erhoben und analysiert. Die Messergebnisse zeigen eindeutige Standortunterschiede auch in Abhängigkeit der Kläranlagengröße und vorhandener Indirekteinleiter. Die Untersuchungen zeigen, dass nicht alle anthropogene Marker an allen Standorten für eine Normalisierung von PCR-Daten für epidemiologische Untersuchungen verwendbar sind. T2 - Wasser 2024 (Jahrestagung der Wasserchemischen Gesellschaft der GDCh) CY - Limburg an der Lahn, Germany DA - 06.05.2024 KW - Diclofenac KW - Koffein KW - Carbamazepin KW - Isolithocholsäure KW - Immunoassay PY - 2024 AN - OPUS4-60991 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Exner, T. T1 - Evaluation anthropogener Marker als Normalisierungsfaktoren für die SARS-CoV-2 Abwassersurveillance zur epidemiologischen Lagebewertung N2 - Im Rahmen der weltweiten Corona-Pandemie fordert die EU-Kommission seit März 2021 die systematische Erfassung und Überwachung von SARS-CoV-2 über das Abwasser, welche der Entscheidungsfindung bezüglich bevölkerungsbezogener Maßnahmen dienen soll. Hierbei können Trendanalysen für die epidemiologische Lagebewertung abgeleitet werden, sofern ein großer Anteil des kommunalen Abwassers der Bevölkerung durch das Monitoring abdeckt wird. Die Datenerhebung erfolgt somit unabhängig vom individuellen Test- und Meldeverhalten der Bevölkerung. Eine bedeutende Herausforderung bei der Bestimmung der Gensequenzen mittels polymerase chain reaction (PCR) stellen standortabhängige Faktoren des Einzugsgebietes sowie Schwankungen der Durchflussrate und der Abwasserzusammensetzung dar. Zu den möglichen Ursachen zählen Verdünnungseffekte durch Regen- und Schmelzwasser, Größenunterschiede des kommunalen Entwässerungssystems, Veränderungen der Demografie und Zuflüsse von Indirekteinleitern. Um eine verbesserte Korrelation quantitativ ermittelter Genkopien des SARS-CoV-2 aus der jeweiligen Abwasserprobe mit dem Anteil der infizierten Bevölkerung zu erzeugen, ist eine Normalisierung der PCR Daten vorzunehmen. Neben relativ einfach zu ermittelnden physikalischen Größen, wie der mittleren Durchflussrate oder der Leitfähigkeit, die Aufschlüsse über den Anteil von Fremd- und Regenwasser ermöglichen, können auch anthropogene Marker, wie Spurenstoffe und Surrogatviren im Abwasser, als direkte Indikatoren für menschliche Fäkalien aus dem häuslichen Abwasser dienen. Im Folgenden soll eine vergleichende Untersuchung von vier Spurenstoffen ‒ Koffein (CAF), Carbamazepin (CBZ), Diclofenac (DCF), Isolithocholsäure (ILA) ‒ sowie einem Surrogatvirus (SV) (Pepper mild mottle virus (PMMoV) oder CrAssphage), die Eignung der jeweiligen Paramater als Normalisierungsfaktoren analysieren. Die Untersuchung fand an 19 Standorten über drei Monate im Rahmen einer Studie aus dem Projekt ESI-CorA statt. T2 - Wasser 2024 (Jahrestagung der Wasserchemischen Gesellschaft der GDCh) CY - Limburg an der Lahn, Germany DA - 06.05.2024 KW - ELISA KW - Immunoassay PY - 2024 AN - OPUS4-60992 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf T1 - Spurenstoffe im Rohabwasser: Möglichkeiten und Perspektiven für den One-Health-Ansatz N2 - Der One-Health-Ansatz hat die Gesundheit von Mensch, Tier und Umwelt im Fokus. Dazu ist eine interdisziplinäre Zusammenarbeit von Akteuren aus Human- und Veterinärmedizin sowie den Umweltwissenschaften notwendig. Ein Ineinandergreifen von methodischen Ansätzen und der Analytik wird angestrebt. Im Zuge der anstehenden Novellierung (2924) der EU-Kommunalabwasserrichtlinie (91/271/EWG) wird die Umsetzung eines One-Health-Ansatzes bereits adressiert. Dazu gehört zum einen der Ausbau und die Prozessüberwachung einer vierten Reinigungsstufe in Klärwerken. Zum anderen ist europaweit die Infrastruktur einer Abwassersurveillance zur Überwachung von Krankheitserregern zu gewährleisten. Dies wird aktuell in Deutschland mit dem Projekt AMELAG ("Abwassermonitoring zur epidemiologischen Lagebewertung") mit zwei Probennahmen pro Woche auf ca. 170 Kläranlagen umgesetzt. T2 - 6. Mülheimer Wasseranalytisches Seminar (MWAS 2024) CY - Mülheim an der Ruhr, Germany DA - 10.09.2024 KW - ELISA KW - Spurenstoffe KW - Koffein KW - Carbamazepin KW - Diclofenac KW - Immunoassay PY - 2024 AN - OPUS4-60993 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Taparli, Ugur Alp T1 - Time- and space-resolved in situ LIBS measurements of chemical compositions during TIG-welding N2 - An in situ monitoring of chemical compositions in the weld pool and the heat affected zone (HAZ) can enable the control of the welding process through the regulation of the welding parameters, and thus can prevent possible weld defects. The most critical parameter for hot cracking -from a metallurgical point of view- is the chemical composition of the weld pool. Chemical composition can be measured and quantified during the welding process with the LIBS technique having the appropriate calibration measurements. T2 - ICWAM 2017 CY - Metz, France DA - 17.05.2017 KW - Chemical compositions KW - TIG-welding KW - In situ measurement KW - LIBS PY - 2017 AN - OPUS4-40313 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gollnow, Christian T1 - Consideration of welding-specific component design on solidification crack initiation T2 - 4th International Workshop Cracking Phenomena in Welds, BAM CY - Berlin, Germany DA - 2014-04-02 PY - 2014 AN - OPUS4-30532 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisenacher, Germar T1 - Development of a Wood Material Model for Impact Limiters of Transport Packages T2 - 4. RAM-Behältersicherheitstag CY - Berlin, Germany DA - 2014-03-26 PY - 2014 AN - OPUS4-30800 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Griesche, Axel T1 - HYDROGEN DISTRIBUTIONS IN IRON VISUALIZED IN 3D BY NEUTRON TOMOGRAPHY T2 - Deutsche Tagung für Forschung mit Synchrotronstrahlung, Neutronen und Ionenstrahlen an Großgeräten 2014 (SNI 2014) CY - Bonn, Germany DA - 2014-09-21 PY - 2014 AN - OPUS4-31667 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rhode, Michael T1 - Approach for calculation of apparent hydrogen diffusion coefficients with permeation experiments in CrMoV steel weld joints T2 - Steel & Hydrogen - 2nd International Conference on Metals and Hydrogen CY - Gent, Belgium DA - 2014-05-05 PY - 2014 AN - OPUS4-30695 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eisenacher, Germar T1 - Development of a Wood Material Model for Impact Limiters of Transport Packages T2 - Waste Mangement 2014 Conference CY - Phoenix, AZ, USA DA - 2014-03-02 PY - 2014 AN - OPUS4-30709 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmitt, Johannes T1 - Data acquisition system for single particle inductively coupled plasma mass spectrometry (spICP-MS) with nanosecond time resolution N2 - This study presents our data acquisition system prototype for single particle inductively coupled plasma mass spectrometry (spICP-MS) with nanosecond time resolution (nanoDAQ) and a matching data processing approach for time-resolved data in the nanosecond range. The system continuously samples the secondary electron multiplier (SEM) detector signal with a dwell time of approximately 2 ns and enables detection of gold nanoparticles (AuNP) as small as 7.5 nm with a commercial single quadrupole ICP-MS instrument. [1] Analysis of acquired transient data is based on the temporal distance between detector events and a derived ion event density. It was shown that the inverse logarithm of the distance between detector events is proportional to particle size. Also, the number of detector events per particle can be used to calibrate and determine the particle number concentration (PNC) of a nanoparticle dispersion. Particle-by-particle-based analysis of ion event density and other parameters derived from nanosecond time resolution show promising results. High data acquisition frequency of the systems allows recording of a statistically significant number of data points in 60 s or less, which leaves only the sample uptake and rinsing steps as remaining factors for limiting the total measurement time. T2 - 20th European Winter Conference on Plasma Spectrochemistry CY - Berlin, Germany DA - 02.03.2025 KW - ICP-MS KW - Instrumentation KW - Nano KW - Nanoparticle Characterization PY - 2025 AN - OPUS4-63599 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiegner, Katharina T1 - BEMMA Bewertung von Emissionen aus Materialien für Museumsausstattungen T2 - EXPONATEC COLOGNE 2011 CY - Cologne, Germany DA - 2011-11-15 PY - 2011 AN - OPUS4-24782 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nekat, B. T1 - The investigation of oxidation and migration processes of inorganic compound in ink corroded manuscripts T2 - European Conference on X-Ray Spectrometry CY - Alghero, Italy DA - 2004-06-06 PY - 2004 AN - OPUS4-5002 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver T1 - Mikro Röntgenfluoreszenzanalyse von Schreib- und Zeichenmaterialien T2 - 13. IGAS Jahreskolloquium: "Vergangenheit, Gegenwart und Zukunft der Atomspektroskopie in der Analytischen Chemie" CY - Berlin, Germany DA - 2003-11-19 PY - 2003 AN - OPUS4-5434 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolff, Timo T1 - Untersuchung von historischen Malmaterialien mittels Mikro-Röntgenfluoreszensanalyse T2 - Jahrestagung Archäometrie und Denkmalpflege 2004 CY - Mannheim, Germany DA - 2004-10-06 PY - 2004 AN - OPUS4-4997 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nektat, B. T1 - Investigation of oxidation and migration processes of inorganic compounds in ink corroded manuscripts T2 - BESSY Users Meeting 2003 CY - Berlin, Germany DA - 2003-12-04 PY - 2003 AN - OPUS4-5435 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckhoff, B. A1 - Hahn, Oliver T1 - Encviromental Analyses by TXRF-NEXAFS and IR-spectroscopy: Speciation of Bromine in Organics and Characterization of the Organic Matrix T2 - VVIII INternational Bonderence on "X-ray Optics and MIcroanlaysis" CY - Frascati, Italy DA - 2005-09-25 PY - 2005 AN - OPUS4-10543 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Bartoll, Jens T1 - Archaeometrical investigations using synchrotron infrared radiation T2 - International Workshop on Infrared Mikroscopy and Spectroscopy with Accelerator Based Sources CY - Rathen, Germany DA - 2005-06-26 PY - 2005 AN - OPUS4-7565 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Wolff, Timo A1 - Wilke, M. T1 - Monitoring of restoration treatments by means of micro-XRF in combination with micro-XANES T2 - 9th European Conference on Non-Destructive Testing CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-13770 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beckhoff, B. A1 - Hahn, Oliver T1 - Environmental analysis by TXRF - NEXAFS and IR- spectroscopy: speciation of Br in organics and characterization of the organic matrix T2 - EXRS 2006 CY - Paris, France DA - 2006-06-19 PY - 2006 AN - OPUS4-13234 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seeger, Stefan T1 - Quantitative characterization of nanoparticle emissions from office machines with printing function T2 - Ultrafine Particles in Urban Air - Abschlusskonferenz des EU-Projektes UFIPOLNET, Sächsisches Landesamt für Umwelt und Geologie LfUG CY - Dresden, Germany DA - 2007-10-23 PY - 2007 AN - OPUS4-17612 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bresch, Harald T1 - Quantitative und qualitative Analyse von nanoskaligen Aerosolemissionen aus Industrieprodukten T2 - DPG-Frühjahrstagung 2008 CY - Darmstadt, Germany DA - 2008-03-10 PY - 2008 AN - OPUS4-16736 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lühl, Lars T1 - 3D Mikro-Röntgennahkantenabsorptionsspektroskopie (Xanes X-Ray absorption near edge spectroscopy) T2 - Jahrestagung Archäometrie und Denkmalpflege 2010 CY - Bochum, Germany DA - 2010-09-15 PY - 2010 AN - OPUS4-21779 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krug, Sonja T1 - Folgen der historischen Schädlingsbekämpfung in Archiven und Museen, Risikoabschätzung - Gefahr für Mensch und Umwelt T2 - Jahrestagung Archäometrie und Denkmalpflege 2010; Deutsches Bergbaumuseum CY - Bochum, Germany DA - 2010-09-15 PY - 2010 AN - OPUS4-21772 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tagle, R. T1 - Elementverteilungen in "High Speed" Ortsaufgelöste Röntgenspektroskopie für die Untersuchung kunsthistorischer Objekte T2 - Jahrestagung Archäometrie und Denkmalpflege 2010 CY - Bochum, Germany DA - 2010-09-15 PY - 2010 AN - OPUS4-21775 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Merchel, Silke T1 - Röntgenanalytische Untersuchung von Eisengallustinten T2 - Das Geheimnis des Jan van Eyck: Niederländische Kunst des 15. Jahrhunderts in Dresden -Gemeinschaftsausstellung der Gemäldegalerie Alte Meister und des Kupferstich-Kabinetts Residenzschloss CY - Dresden, Germany DA - 2005-08-13 PY - 2005 AN - OPUS4-22221 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Merchel, Silke T1 - Geheimes Wissen Jan van Eycks T2 - Das Geheimnis des Jan van Eyck: Niederländische Kunst des 15. Jahrhunderts in Dresden -Gemeinschaftsausstellung der Gemäldegalerie Alte Meister und des Kupferstich-Kabinetts Residenzschloss CY - Dresden, Germany DA - 2005-08-13 PY - 2005 AN - OPUS4-22219 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred T1 - Emission measurements in show cases - the need of standardisation T2 - COST-D42 Final meeting CY - Dublin, Ireland DA - 2010-11-08 PY - 2010 AN - OPUS4-22441 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabin, Ira T1 - In-situ damage assessment of collagen within ancient manuscripts written on parchment: a ploarized Raman spectroscopy approach T2 - Konferenz: ICORS 2010: XXII International Conference on Raman Spectroscopy CY - Boston, MA, USA DA - 2010-08-08 PY - 2010 AN - OPUS4-23434 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nohr, Michael T1 - Micro-Camber Thermal Extractors as substitution for conventional emission test chamber for the analysis of VOC T2 - Technart 2011 CY - Berlin, Germany DA - 2011-04-26 PY - 2011 AN - OPUS4-23915 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krug, Sonja T1 - Reference Samples for XRF Investigation of Museum Objects T2 - Indoor Air Quality 2012 CY - London, England DA - 2012-06-17 PY - 2012 AN - OPUS4-26391 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krug, S. T1 - 2-Dimensionale Fluoresenzspektroskopie zur stoffgruppenspezifischen Bindemittelanalyse T2 - Jahrestagung Archäometrie und Denkmalpflege 2004 CY - Mannheim, Germany DA - 2004-10-06 PY - 2004 AN - OPUS4-4992 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartoll, S. T1 - Bindemittelanalyse an Querschliffen mit Synchrotron Infrarotsprektroskopie T2 - Jahrestagung Archäometrie und Denkmalpflege 2004 CY - Mannheim, Germany DA - 2004-10-06 PY - 2004 AN - OPUS4-4993 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Merchel, Silke T1 - Röntgenanalytische Untersuchung an Metallstiftzeichnungen - Jan van Eyck "Bildnis eines älteren Herren" T2 - Das Geheimnis des Jan van Eyck: Niederländische Kunst des 15. Jahrhunderts in Dresden -Gemeinschaftsausstellung der Gemäldegalerie Alte Meister und des Kupferstich-Kabinetts Residenzschloss CY - Dresden, Germany DA - 2005-08-13 PY - 2005 AN - OPUS4-10552 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kanngießer, B. A1 - Hahn, Oliver A1 - Wilke, M. T1 - X-ray fluorescence and X-ray absorption analysis of historical iron gall links T2 - Workshop: RICH - Research Infrastructures for Cultural Heritage CY - Trieste, Italy DA - 2005-12-12 PY - 2005 AN - OPUS4-10933 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lühl, Lars T1 - 3D Mikro-Nahkanten-Absorptionsspektroskopie T2 - Anakon 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-19371 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabin, Ira T1 - Raman and Ftir Analysis of the Dead Sea Scroll Fragments T2 - Konferenz: "RAA 2009 - Bilbao" CY - Bilbao, Spain DA - 2009-09-14 PY - 2009 AN - OPUS4-19904 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lühl, Lars T1 - 3D Mikro-X-Ray Absorption Near Edge Spectroscopy (XANES) T2 - PRORA 2009 - Fachtagung Prozessnahe Töntgenanalytik CY - Berlin, Germany DA - 2009-11-26 PY - 2009 AN - OPUS4-20646 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Masic, Admir T1 - Solid State and Unilateral NMR study og Deterioration of dead Sea scroll Fragments T2 - Technart 2011 CY - Berlin, Germany DA - 2011-04-26 PY - 2011 AN - OPUS4-24278 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krug, Sonja A1 - Hahn, Oliver T1 - Determination of Pesticides in Textiles with XRF T2 - TECHENART 2011 CY - Berlin, Germany DA - 2011-04-26 PY - 2011 AN - OPUS4-24144 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rabin, Ira T1 - Fungal bioleaching of mineral components in a 20th-century illuminated parchment T2 - Technart 2011 CY - Berlin, Germany DA - 2011-04-26 PY - 2011 AN - OPUS4-24279 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver T1 - Archaeometrical investigations using synchrotron infrared radiation T2 - Workshop on "Synchrotron Radiation in Art and Archaeology" (ESRF-CNRS) CY - Grenoble, France DA - 2005-02-09 PY - 2005 AN - OPUS4-7130 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kemmlein, Sabine T1 - Suitability of emission test chambers and cells for measuring organophosphates and brominated flame retardants from insulation material T2 - Proceedings of INDOOR AIR 2005. International Conference on Indoor Air Quality and Climate CY - Beijing, China DA - 2005-09-04 PY - 2005 AN - OPUS4-7123 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver T1 - Do particleboards produced with recycled wood contribute to indoor air pollution with biocides? T2 - Healthy Buildings 2003 - 7th International Conference CY - Singapore DA - 2003-12-07 PY - 2003 AN - OPUS4-5436 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver T1 - SVOC-Emissions from materials into indoor air T2 - European Geosciences Union (EGU), General Assembly 2005 CY - Vienna, Austria DA - 2005-04-24 PY - 2005 AN - OPUS4-7132 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Beckhoff, B. T1 - Environmental analysis by TXRF - NEXAFS and IR- spectroscopy: speciation of Br in organics and characterization of the organic matrix T2 - PRORA (Fachtagung), Prozessnahe Röntgenanalytik, Wista Adlershof CY - Berlin, Germany DA - 2005-11-24 PY - 2005 AN - OPUS4-11482 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Beckhoff, B. T1 - Environmental analysis by TXRF - NEXAFS and IR- spectroscopy: speciation of Br in organics and characterization of the organic matrix T2 - Healthy Buildings 2006 CY - Lisbon, Portugal DA - 2006-06-04 PY - 2006 AN - OPUS4-12312 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seeger, Stefan T1 - Qualitative characterization of nanoparticle emissions from office machines with printing functions T2 - Ultrafine Particles in Urban Air - Abschlußkonferenz des EU-Projektes UFIPOLNET, Sächsisches Landesamt für Umwelt und Geologie LfUG CY - Dresden, Germany DA - 2007-10-23 PY - 2007 AN - OPUS4-16161 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mantouvalou, I. T1 - In-situ analysis of corrosion layers of histrorical glass objects by 3D Micro XRF T2 - TECHNART 2007, Non-destructive and Microanalytical Techniques in Art and Cultural Heritage Research CY - Lisbon, Portugal DA - 2007-04-25 PY - 2007 AN - OPUS4-15023 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver A1 - Krug, Sonja T1 - German Network N.i.Ke.: Science for cultural heritage T2 - "WISSEN DURCH VERNETZUNG", Kulturgutdigitalisierung in Deutschland und Europa, Internationale Konferenz CY - Berlin, Germany DA - 2007-06-21 PY - 2007 AN - OPUS4-15032 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolff, Timo T1 - Extended Calibration Procedure for the Determination of Micro-SRF Excitation Spectra T2 - European Conference on X-ray Spectrometry 2008 CY - Dubrovnik, Croatia DA - 2008-06-16 PY - 2008 AN - OPUS4-18937 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver T1 - Holistic approach to Qumran: Analysis of the Dead Sea Scrolls related artefacts T2 - IRUG 9, 9th Biennial Conference of the Infrared and Raman Users Group CY - Buenos Aires, Argentina DA - 2010-03-03 PY - 2010 AN - OPUS4-21309 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lühl, Lars T1 - 3D Micro-X-Ray Absorption Near Edge Spectroscopy (XANES) T2 - First Joint BER II and BESSY III Users Meeting CY - Berlin, Germany DA - 2009-11-12 PY - 2009 AN - OPUS4-20648 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lühl, Lars T1 - 3D Mikro - Röntgennahkantenabsorptionsspektroskopie (XANES - X - Ray Absorption Near Edge Spectroscopy) T2 - Tagung Archäometrie und Denkmalpflege CY - Bochum, Germany DA - 2010-09-15 PY - 2010 AN - OPUS4-22797 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kindzorra, Emanuel T1 - RAMAN-SPEKTROSKOPIE ZUR MESSUNG VON HINTERGLASMALEREI T2 - Archäometrie und Denkmalpflege 2015 CY - Mainz, Germany DA - 2015-03-25 PY - 2015 AN - OPUS4-33281 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krug, Sonja T1 - Transdisciplinary Indexing of Cultural-Historical Collections T2 - TECHNART 2015 CY - Catania, Italy DA - 2015-04-27 PY - 2015 AN - OPUS4-33282 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonnerot, Olivier T1 - Are X-rays safe for manuscripts’ materials? N2 - In the last decade, applications of X-rays to the study of manuscripts significantly spread in both diversity and extent. They range from writing material analysis, mostly with X-ray fluorescence (XRF), permitting non-invasive characterization of inks and pigments used, to the investigation of the origin of writing supports. In addition, XRF mapping has proved to be an invaluable tool for recovering erased text. Finally, computed-tomography (CT) has shown potential in virtually unrolling rolls, making text readable without using-damaging mechanical methods. Despite their growing use, little attention has been paid to the side effects of such analytical tools. We observed irreversible parchment colour changes during some experiments on dead-sea scrolls with synchrotron radiation sources. Furthermore, partial photo-reduction of iron under high intensity beam during X-ray absorption near edge structure spectroscopy (XANES) measurements of iron-gall ink on paper has been reported several times [5,6]. Such phenomena have mostly been overlooked so far, although there is an increasing awareness of the necessity to study them. We conducted experiments at the Deutsches Elektronen-Synchrotron (DESY) facilities to investigate X-ray induced structural alteration of paper and parchment to see whether the presence of absorption centres (ink and pigments) has an impact. In addition to better understanding degradation processes, we are aiming to define an appropriate methodology of analysis of manuscripts with a tolerable risk of damage. The first results concerning X-ray induced damage of cellulose materials have already been presented at the Synchrotron Radiation and Neutrons in Art and Archaeology (SR2A). We are focusing here on the results on parchment materials. T2 - Cultural and Natural Heritage Workshop CY - Grenoble, France DA - 22.01.2020 KW - X-rays KW - Manuscripts KW - Parchment KW - Synchrotron PY - 2020 AN - OPUS4-50305 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Engelking, Lorenz T1 - Residual Stress Analysis on a DED-Arc High-strength Steel Component Using the Contour Method N2 - This poster compares the results of the residual stress determination of DED-Arc open hollow cuboid specimens via XRD with the contour method. The results are in very good agreement. T2 - ECRS11 CY - Prague, Czech Republic DA - 03.06.2024 KW - DED-Arc KW - Residual stress KW - Contour method PY - 2024 AN - OPUS4-60221 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rhode, Michael T1 - Component test for the assessment of hydrogen assisted cracking susceptibility of thick-walled submerged arc welded offshore steels N2 - Offshore wind turbines (OWT) are a key factor of the sustainable energy generation of tomorrow. The continuously increasing installation depths and weight of the OWTs require suitable foundation concepts like monopiles or tripods. Typically, mild steels like the S420ML are used with plate thicknesses up to several hundreds of mm causing high restraints in the weld joints. Due to the large plate thickness, submerged arc welding (SAW) with multiple wires is the state-of-the-art welding procedure. As a result of the very high stiffness of the construction, a certain susceptibility for time-delayed hydrogen-assisted cracking (HAC) may occur. The evaluation of crack susceptibility is very complex due to the component size and stiffness of real offshore structures. For this purpose, a near-component test geometry was developed to transfer the real stiffness conditions to laboratory (i.e., workshop) scale. The investigated mock-up, weighing 350 kg, comprised heavy plates (thickness 50 mm, seam length 1,000 m) joined by a 22-pass submerged arc weld. Additional stiffeners simulated the effect of high restraint or shrinkage restraint of the weld. Extreme scenarios of hydrogen absorption during welding were simulated via the use of welding fluxes in dry (HD < 5 ml/100g Fe) and moisture condition (HD > 15 ml/100g Fe). The residual stresses were determined by a robot X-ray diffractometer. Areas of critical tensile residual stress (at the level of the yield strength) were found in the weld metal and heat affected zone. To identify possible delayed cracking, the welds were tested by phased array ultrasonic testing (PAUT) after 48 h. Summarized, no significant occurrence of HAC was detected, indicating the high crack resistance of the welded joint, i.e., a suitable combination of base material, welding consumable and welding parameters. T2 - AJP 2023: 3rd International Conference on Advanced Joining Processes 2023 CY - Braga, Portugal DA - 19.10.2023 KW - Hydrogen assisted cracking KW - Submerged arc welding KW - Component test KW - NDT KW - Waiting time PY - 2023 AN - OPUS4-58672 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Agasty, Amit T1 - A Preliminary Study on the Scaling of RC Structures under Blasting Loading N2 - Current capabilities for full-scale field blast testing are highly resource intensive. Reliable small-scale experiments are an effective alternative. Characterization of the dynamic response and damage of RC elements to scaled blast loads was investigated in scaled-down field experiments. Spatially resolved information on the dynamic structural response to blast loading was obtained using distributed fiber optic acoustic sensing (DAS), acceleration sensors as well as piezoelectric pressure sensors. T2 - 46. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 25.04.2025 KW - Explosives KW - Blast and scaling effects KW - Concrete PY - 2025 AN - OPUS4-62994 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Costard, René T1 - Dynamic response of reinforced concrete (RC) components in scaled-down blast tests N2 - Der Beitrag präsentiert erste Ergebnisse aus dem BAM-internen Projekt AP5 Security zum Thema Charakterisierung der dynamischen Reaktion und Schädigung von Stahlbetonbauteilen. T2 - 44.Informationstagung Sprengtechnik CY - Siegen, Germany DA - 14.04.2023 KW - Explosionsbelastung auf Strukturen KW - Beton KW - Numerik PY - 2023 AN - OPUS4-57313 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Agasty, Amit A1 - Costard, René T1 - Dynamic response of reinforced concrete (RC) components in scaled-down blast tests N2 - Current capabilities for full-scale field testing are highly resource intensive. Reliable small-scale experiments are an effective alternative. Characterization of the dynamic response and damage of RC elements to scaled blast loads was investigated in scaled-down field experiments. Spatially resolved information on the dynamic structural response using distributed fiber optic acoustic sensing (DAS) and acceleration as well as blast loading by piezoelectric pressure sensors. T2 - 45. Informationstagung Sprengtechnik CY - Siegen, Germany DA - 05.04.2024 KW - Blast tests KW - Reinforced concrete KW - Acceleration sensors PY - 2024 AN - OPUS4-59808 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ryll, Tom William T1 - Researching automation of gypsum recycling N2 - This poster illustrates first successful experiments of recycling gypsum in hypersaline solutions with quantification via Raman-spectroscopy. To furhter enhancements include an automation setup, that was developed to gain in-situ measurements and open a pathway for batch-conversions and upscaling. T2 - BESSY@HZB User Meeting CY - Berlin, Germany DA - 12.12.2024 KW - Recycling KW - Gypsum KW - Raman-spectroscopy KW - Automation PY - 2024 AN - OPUS4-62292 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heuser, Lina T1 - In situ observation of silver precipitation in sodium zinc borate glass-forming melts N2 - Melting of Na2CO3-ZnO-B2O3 batches containing up to 16.8 wt% AgNO3 (5 mol% Ag2O in the target glass composition) was observed in situ by means of hot stage microscopy. In all batches metallic silver precipitation took place as most of the silver nitrate was reduced to metallic silver before Ag+ ions could be dissolved in the evolving borate melts. In turn, only traces of Ag+ (<300 ppmw) were dissolved in the sodium zinc borate glass melts under study. It is assumed that the oxidation to Ag+ was limited due to poor availability of reducible oxygen in the glass melts and presence of Na2O being a stronger base than Ag2O. Thus, the precipitated metallic silver formed droplets of different sizes. The larger droplets (d > 20 µm) were already settled at the bottom of the container and remained constant in size upon dwelling for 1 h at 1050 °C of about one hour and the subsequent cooling (45 K/min) to room temperature, whereas the smaller droplets (d < 20 µm) were mobile in the borate melt due to Marangoni and Stokes motion. For the latter droplets, coalescence was observed in situ. A growth of larger droplets at the expense of smaller ones, i.e., Ostwald ripening was also expected but could not be studied with the used experimental equipment. T2 - 26th International Congress on Glass CY - Berlin, Germany DA - 03.07.2022 KW - Glass melt KW - Silver KW - Sodium zinc borate glass KW - Hot stage microscopy KW - Precipitation PY - 2022 AN - OPUS4-55732 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lu, Xin A1 - Schukar, Marcus A1 - Krebber, Katerina T1 - Characterizing vibration response of fiber cables for distributed acoustic sensing N2 - The vibration responses of two fiber cables are characterized up to 16 kHz and compared with a standard tight-buffered 900 um fiber. The response of the cables is suppressed due to the cable protection. T2 - 27th International Conference on Optical Fiber Sensors (OFS-27) CY - Alexandria, VA, USA DA - 29.08.2022 KW - Distributed fiber sensing KW - Acoustic sensing KW - Response characterization PY - 2022 AN - OPUS4-56099 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tielemann, Christopher T1 - Oriented Surface Crystallization N2 - Up to now, oriented surface crystallization phenomena are discussed controversially, and related studies are restricted to few glasses. For silicate glasses we found a good correlation between the calculated surface energy of crystal faces and oriented surface nucleation. Surface energies were estimated assuming that crystal surfaces resemble minimum energy crack paths along the given crystal plane. This concept was successfully applied by Rouxel in calculating fracture surface energies of glasses. Several oriented nucleation phenomena can be herby explained assuming that high energy crystal surfaces tend to be wetted by the melt. This would minimize the total interfacial energy of the nucleus. Furthermore, we will discuss the evolution of the microstructure and its effect on the preferred crystal orientation. T2 - 26th International Congress on Glass CY - Berlin, Germany DA - 03.07.2022 KW - Glass KW - Surface energy KW - Crystal orientation PY - 2022 AN - OPUS4-56074 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lu, Xin A1 - Schukar, Marcus A1 - Weege, S. A1 - Roske, T. A1 - Krebber, Katerina T1 - Leakage detection at a borehole simulator using distributed acoustic sensing N2 - A distributed acoustic sensing system is used to detect the leakage in a borehole simulator by measuring the leakage induced vibration. The leakage location can be clearly determined by frequency spectrum analysis. T2 - 27th International Conference on Optical Fiber Sensors (OFS-27) CY - Alexandria, VA, USA DA - 29.08.2022 KW - Structural health monitoring KW - Distributed fiber sensing KW - Distributed acoustic sensing KW - Leakage detection PY - 2022 AN - OPUS4-56098 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Waurischk, Tina A1 - Reinsch, Stefan A1 - Müller, Ralf A1 - Chen, Y.-F. A1 - Contreras Jaimes, A. T1 - Datengetriebener Workflow für die beschleunigte Entwicklung von Glas (GlasDigital) N2 - Das Projekt GlasDigital wurde im allgemeinen vorgestellt, sowie die einzelnen Zwischenstände der verschiedenen Arbeitspakete aller Projektpartner präsentiert. Die allgemeine Porjektvorstellung ist auf deutsch. Die Zwischenstände der Arbeitsinhalte sind auf englisch. T2 - PMD Vollversammlung CY - Berlin, Germany DA - 03.11.2022 KW - Oxidglas KW - Robotische Glasschmelzanlage KW - ML KW - Ontologie KW - Digitaler Zwilling KW - Bildanalyse PY - 2022 AN - OPUS4-56491 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Waurischk, Tina T1 - Data-driven Workflow for Accelerated Glass Development (GlasDigital) N2 - As part of a joint project involving the Fraunhofer Institute for Silicate Research (ISC), the Friedrich Schiller University of Jena, the Clausthal University of Technology and the Federal Institute for Materials Research and Testing (BAM), digital tools are to be created for the development of new types of glass materials. Current processes for the production of glasses with improved properties are usually very cost- and energy-intensive due to the low degree of automation and are subject to long development cycles. The use of robotic synthesis processes in combination with self-learning machines is intended to overcome these problems in the long term. The development of new types of glass can then not only be accelerated considerably, but also be achieved with much less effort. In this talk, data generation via a robotic high-throughput glass melting system is presented, which should be the experimental basis for the ontology developed within the project GlasDigital. T2 - Materials Science and Engineering Congress (MSE 2022) CY - Darmstadt, Germany DA - 27.09.2022 KW - Oxidglas KW - Robotische Glasschmelzanlage PY - 2022 AN - OPUS4-56489 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Duffner, Eric A1 - Mair, Georg W. T1 - Lebensdauerabschätzung von Composite-Druckgefäßen / COD-AGE N2 - Angewendete Messverfahren im Themenfeldprojekt "Lebensdauerabschätzung von Composite-Druckgefäßen" / COD-AGE T2 - Beirat TF Material CY - BAM Berlin, Germany DA - 26.04.2018 KW - Lebensdauerabschätzung KW - Composite-Druckgefäße KW - Degradation PY - 2018 AN - OPUS4-44898 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Burst an Internal Pressure Creep Rupture Testing Bay T2 - 17. Sitzung FKT-Sonderausschuss (Sicherheit von Gas- und Wasserstoff-Fahrzeugen) CY - Berlin, Germany DA - 2014-03-27 PY - 2014 AN - OPUS4-30568 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Slow Burst Testing Bay T2 - 17. Sitzung FKT-Sonderausschuss (Sicherheit von Gas- und Wasserstoff-Fahrzeugen) CY - Berlin, Germany DA - 2014-03-27 PY - 2014 AN - OPUS4-30567 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Gasflaschen aus Verbundwerkstoffen - von der Materialwahl bis zur Sicherheitsanalyse T2 - World Hydrogen Energy Conference 2012 CY - Toronto, Canada DA - 2012-06-03 PY - 2012 AN - OPUS4-30607 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - COMPOSITE CYLINDERS - !0 YEARS DETERMINATION OF RETEST PERIODS IN d. - FROM VdTÜV - GUIDELINE 506 to BAM-CAT 2014 T2 - 2nd WORKSHOP on STATISTICAL SAFETY ASSESSMENT of Composite Cylinders from Mass Production CY - BAM Berlin DA - 2015-01-13 PY - 2015 AN - OPUS4-33094 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Duffner, Eric T1 - Quality control by acoustic emission testing T2 - 2nd WORKSHOP on STATISTICAL SAFETY ASSESSMENT of Composite Cylinders from Mass Production CY - BAM, Berlin DA - 2015-01-13 PY - 2015 AN - OPUS4-32457 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - COMPOSITE CYLINDERS - DEGRADATION OF SAFETY IN SERVICE T2 - 2nd Workshof on statistical safety assessment of Composite Cylinders from Mass production CY - BAM Berlin DA - 2015-01-13 PY - 2015 AN - OPUS4-33093 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Duffner, Eric T1 - Hydraulic load cycle test bench T2 - WORKSHOP on STATISTICAL SAFETY ASSESSMENT of Composite Cylinders from Mass Production CY - BAM Berlin DA - 2014-11-17 PY - 2014 AN - OPUS4-32298 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Modular concept of fire-testing for storage containments and pressure relief devices (PRD) T2 - StorHy-Jahrestreffen, BAM CY - Berlin, Germany DA - 2007-02-26 PY - 2007 AN - OPUS4-14507 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Hydraulic cycling facility of BAM for extreme temperature tests T2 - StorHy-Jahrestreffen, BAM CY - Berlin, Germany DA - 2007-02-26 PY - 2007 AN - OPUS4-14506 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Fire engulfment tests at BAM in Horstwalde T2 - StorHy-Jahrestreffen, BAM CY - Berlin, Germany DA - 2007-02-26 PY - 2007 AN - OPUS4-14509 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. T1 - Three arguments for probabilistic dimensioning of hydrogen storage systems T2 - StorHy-Jahrestreffen, BAM CY - Berlin, Germany DA - 2007-02-26 PY - 2007 AN - OPUS4-14510 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulz, Michael T1 - Forschungsaktivitäten an Leichtbaubehältern aus faserverstärkten Kunststoffen für den Gefahrgutbereich T2 - Transport Logistic 2011 CY - Munich, Germany DA - 2011-05-10 PY - 2011 AN - OPUS4-23798 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Popiela, Bartosz T1 - Creep Phenomena During Initial Loading of Type 4 Composite Pressure Vessels N2 - A poster presentation on the impact of creep phenomena during initial loading on the safety of type 4 composite pressure vessels. A statistical evaluation of slow burst tests shows an increase of the survival rate of initially loaded composite pressure vessels (sustained load and increased pressure) compared to the ones tested in a brand-new state. T2 - ASME Pressure Vessels & Piping® Conference CY - Quebec, Canada DA - 20.07.2025 KW - Composite KW - Pressure vessel KW - Safety KW - Creep PY - 2025 AN - OPUS4-63761 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bachmann, Marcel T1 - Multiphysics Process Simulation of the Electromagnetic-Supported High Power Laser Beam Welding of Austenitic Stainless Steel T2 - COMSOL Conference 2013 Rotterdam CY - Rotterdam, Netherlands DA - 2013-10-23 PY - 2013 AN - OPUS4-29315 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ertel, Jens-Peter T1 - Old ideas to improve pile integrity testing revisited and optimized T2 - NDT-CE 2015 CY - Berlin, Germany DA - 2015-09-15 PY - 2015 AN - OPUS4-34385 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Bridge monitoring using embedded ultrasonics First results from the BLEIB reference structure N2 - The BLEIB reference structure The structure is a two-span, 24 m long inverse u-shaped post-tensioned concrete beam. Fibre optic sensing cables, RFID sensors and ultrasonic transducers are permanently embedded. Other sensing techniques (vibrational, optical, ultrasonic, mechanical) are applied externally. Tension can be adjusted. Loads can be placed at arbitrary locations. Limited damage is introduced to one span. The BLEIB reference structure is located at BAM‘s test site in Horstwalde, south of Berlin. Ultrasonic transducer before concreting. Embedded ultrasonic transducers 14 piezo transducers have been embedded before concreting. They are located in five sections, two close to the centers of both spans respectively and one above the central bearing. Load experiment and data evaluation In a first experiment load 2 (weight 2 t) was moved three times along the southern (right) span. The tension forces were modified as well. Ultrasonic transmission measurements were repeated over time and evaluated using Coda Wave Interferomerry (CWI), which determines correlation coefficients and relative velocity changes as subtle indicators for loads and other changes in the material. T2 - New mathematics for a safer world: wave propagation in heterogeneous materials CY - Edinburgh, UK DA - 12.06.2017 KW - Bridge monitoring KW - Ultrasound KW - Embedded transducers KW - Coda wave interferometry PY - 2017 AN - OPUS4-40578 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gebhardt, Moritz Oliver T1 - Restraint Effects on Stresses and Strains in Single-Pass, High-Power Laser-Beam Welding of Thick Plates T2 - 9th International Seminar Numercial Analysis of Weldability CY - Seggauberg, Austria DA - 2009-09-28 PY - 2009 AN - OPUS4-20403 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wienold, Julia T1 - Dependency of particle size distributions, originating from IR-laser ablation, on laser paramters and materials T2 - 10th European Workshop on Laser Ablation CY - Kiel, Germany DA - 2010-06-29 PY - 2010 AN - OPUS4-21792 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yang, Q.-C. T1 - BAM-S005 Type A and B: New silicate reference glasses for microanalysis T2 - European Geosciences Union General Assembly 2011 CY - Vienna, Austria DA - 2011-04-03 PY - 2011 AN - OPUS4-23234 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - SIP - Komplexe elektrische Widerstandstomographie T2 - DACH-Jahrestagung 2008 CY - St. Gallen, Switzerland DA - 2008-04-28 PY - 2008 AN - OPUS4-25016 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, S. T1 - Anwendung der Reverse-Time-Migration auf Ultraschallmessungen an Beton in der zerstörungsfreien Prüfung T2 - 70. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG) CY - Bochum, Germany DA - 2010-03-15 PY - 2010 AN - OPUS4-22622 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Sabine T1 - Anwendung der Reverse-Time Migration auf Ultraschall-Echo-Messungen in der zerstörungsfreien Prüfung T2 - Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG) CY - Hamburg, Germany DA - 2012-03-05 PY - 2012 AN - OPUS4-25609 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Geophysik und Zerstörungsfreie Prüfung im Bauwesen T2 - Bauwerksdiagnose 2014 CY - Berlin, Germany DA - 2014-02-13 PY - 2014 AN - OPUS4-30195 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Localisation and quantification of metallic nanoparticles in single cells by laser ablation ICP-MS T2 - NanoBio Europe, 10th International Congress & Exhibition on Nanobiotechnology CY - Münster, Germany DA - 2014-06-02 PY - 2014 AN - OPUS4-30781 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grohmann, Maria T1 - Bestimmung der Geometrie einer Fundamentplatte mit dem Ultraschall-Echo-Verfahren unter Anwendung geophysikalischer Migrationsmethoden T2 - 74. Jahrestagung der Deutschen Geophysikalischen Gesellschaft CY - Karlsruhe, Deutschland DA - 2014-03-10 PY - 2014 AN - OPUS4-32627 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grohmann, Maria T1 - Bestimmung der Geometrie einer Fundamentplatte mit dem Ultraschall-Echo-Verfahren unter Anwendung geophysikalischer Migrationsmethoden T2 - DGZfP-Jahrestagung 2014 CY - Potsdam, Deutschland DA - 2014-05-26 PY - 2014 AN - OPUS4-32628 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Cruz Alonso, M. T1 - Bioimaging of metallothioneins in ocular tissue sections by LA-ICP-MS using bioconjugated gold nanoclusters N2 - Oxidative stress is produced by an imbalance between free radical production and biological system's ability to detoxify the reactive intermediates and repair the resulting damage. In the human eye the main causes of oxidative stress are the daily exposure to sunlight, chemical insults and the special microenvironment with abundant photo-sensitizers. For this reason, oxidative stress has been associated several ocular diseases, like aged-related macular degeneration (AMD). On the other hand, Metallothioneins (MTs) are a family of low molecular weight (6–7 kDa), cysteine-rich (30%) and metal-binding proteins. The cysteine residues can bind metal atoms such as zinc, copper, and cadmium via thiolate bonds. These proteins have a wide range of functions including defense against oxidative damage, intracellular storage and transport and metabolism of metal ions. The antioxidant properties of MTs reside in their capacity to capture and neutralize free radicals by binding and transferring zinc ions in a redox-dependent fashion, forming the antioxidant system Zinc-Metalothionein (Zn-MT). Highly sensitive analytical tools are required to study the relationship between Zn and MTs in sections from ocular tissues. These methodologies should permit the simultaneous localization (bioimaging) of metals and proteins. Laser ablation (LA) coupled to ICP-MS has shown a huge potential for bioimaging studies in biological tissues. In addition, the use of metal nanoclusters (NCs) as elemental tags will provide signal amplification, compared with other tags traditionally employed (e.g. polymeric tags). To this end, antibodies with gold nanoclusters (AuNCs) will be used in combination with LA-ICP-MS for the detection of different metallothioneins (MT 1/2 and 3) directly into the ocular tissue sections. - Methods: The AuNCs synthesized were bioconjugated with an Anti-MT 1/2 antibody and with Anti-MT 3 antibody. Next, using ocular tissue sections (5 microns thick) from different donors the immunoassays were performed. After the immunoassay protocol, imaging studies were carried out by LA-ICP-MS as well as by fluorescence (confocal microscope) in order to compare both methodologies. - Results: The MTs (measuring the Au signal) and the coordinated metals distribution (Zn and Cu) were successfully carried out in human ocular tissues, including sclera, choroid, retina and retinal pigment epithelium regions. The image patterns found in ocular tissues were in agreement with those reported by conventional immunohistochemistry. - Conclusions: It is possible to know the distribution of MT proteins and different coordinated metals using bioconjugated AuNCs and LA-ICP-MS. Proposed analytical tools could help to better understand the roles of the antioxidant system Zinc-Metalothionein in the eye. T2 - European Winter Conference on Plasma Spectrochemistry EWCPS-2017 CY - St. Anton, Austria DA - 19.02.2017 KW - Bioimaging KW - LA-ICP-MS KW - Nanocluster PY - 2017 AN - OPUS4-39293 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - König, Markus A1 - Grohmann, Maria A1 - Niederleithinger, Ernst T1 - Anwendung der Reverse-Time Migration auf Ultraschall-Echo-Daten zur Detektion von verdeckten Rissen in Betonkörpern N2 - Das Ultraschall-Echo-Verfahren ist eine wichtige Methode der zerstörungsfreien Prüfung (ZfP). Prüfaufgaben im Bauwesen beinhalten unter anderem die korrekte Dickenbestimmung von Konstruktionen, sowie die Lokalisierung von Einbauteilen und Fehlstellen. Das Abbildungsverfahren RTM (Reverse Time Migration) liefert oft bessere Bilder als konventionelle Verfahren. Die Datenaufnahme am Betonprobekörper erfolgte mit einem Scannersystem der BAM, bei dem jeweils ein Ultraschall-Prüfkopf als Sender bzw. Empfänger diente. Es wurden senkrecht zur Profilrichtung horizontal polarisierte Scherwellen genutzt. Die RTM wurde mit dem Softwarepaket Madagascar gerechnet. Die Ergebnis zeigt das Potential dieser Methode im Bezug auf komplexe Strukturen. Die lateralen Positionen der Risse im RTM-Bild sowie deren Höhe innerhalb des Probekörpers, entsprechen recht genau dem visuellen Befund. T2 - 77. Jahrestagung der Deutschen Geophysikalischen Gesellschaft CY - Potsdam, Germany DA - 27.03.2017 KW - Ultraschall KW - Beton KW - Riss KW - Reverse Time Migration PY - 2017 AN - OPUS4-39662 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meggyes, Tamás T1 - Reducing the Risk for Tailings Facilities T2 - 8th International FZK/TNO Conference on Contaminated Soil (ConSoil 2003) CY - Ghent, Belgium DA - 2003-05-12 PY - 2003 AN - OPUS4-5384 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Elektrische Widerstandsmessungen mit Spektraler Induzierter Polarisation T2 - Feuchtetag 2004 mit Workshop ONSITEFORMASONRY CY - Berlin, Germany DA - 2004-11-18 PY - 2004 AN - OPUS4-5703 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Pfahlprüfung: Grenzbereich zwischen Bauingenieurwesen und Geophysik T2 - Jahrestagung Deutsche Geophysikalische Gesellschaft (DGG) CY - Graz, Austria DA - 2005-02-21 PY - 2005 AN - OPUS4-7177 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kruschwitz, Sabine T1 - Zerstörungsfreie Strukturuntersuchung von Spülhaldendämmen mittels SIP T2 - Jahrestagung Deutsche Geophysikalische Gesellschaft (DGG) CY - Graz, Austria DA - 2005-02-21 PY - 2005 AN - OPUS4-7179 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kruschwitz, Sabine T1 - Spektrale Induzierte Polarisation zur Charakterisierung von Baumaterial T2 - Jahrestagung Deutsche Geophysikalische Gesellschaft (DGG) CY - Graz, Austria DA - 2005-02-21 PY - 2005 AN - OPUS4-7178 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kruschwitz, Sabine T1 - Multi-channel Spectral Induced Polarization (SIP) Measurements on Tailings Dams T2 - European Association of Geoscientists & Engineers-Near Surface Division CY - Palermo, Italy DA - 2005-09-04 PY - 2005 AN - OPUS4-10878 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kruschwitz, Sabine T1 - Charakterisierung von Feuchte- und Salzbelastungen in Baumaterial durch Impedanzspektroskopie T2 - Bauwerksdiagnose 2006 CY - Berlin, Germany DA - 2006-03-23 PY - 2006 AN - OPUS4-12196 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Determination of trace impurities in pure copper using LA-ICP-MS T2 - 16. Jahreskolloquium der Interessengemeinschaft Atomspektroskopie (IGAS) CY - Berlin, Germany DA - 2006-11-08 PY - 2006 AN - OPUS4-13778 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Numerical simulation of non-destructive foundation pile tests T2 - ECNDT Berlin 2006, 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 PY - 2006 AN - OPUS4-14087 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Pfahl- und Fundamentprüfung T2 - Bauwerksdiagnose 2006 CY - Berlin, Germany DA - 2006-02-23 PY - 2006 AN - OPUS4-14086 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Charakterisierung von Feuchte- und Salzbelastungen in Baumaterial durch Impedanzspektroskopie T2 - 1. Symposium Impedanzspektroskopie, Grundlagen und Anwendungen CY - Essen, Germany DA - 2006-05-16 PY - 2006 AN - OPUS4-14248 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Vergleich unterschiedlicher Ansätze zur Kalibrierung bei der Analyse von reinem Kupfer mit LA-ICP-MS T2 - ANAKON 2007 CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14642 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Homogenitätsprüfung und Analyse von reinem Kupfer mit Laserablation-ICP-Massenspektrometrie T2 - 4. Hochschul-Kupfersymposium CY - Berlin, Germany DA - 2007-11-06 PY - 2007 AN - OPUS4-14803 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Schwachstellenanalyse an Flussdeichen T2 - Jahrestagung Deutsche Geophysikalische Gesellschaft CY - Aachen, Germany DA - 2007-03-26 PY - 2007 AN - OPUS4-14682 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Laser ablation ICP-MS for the determination of trace impurities in pure copper T2 - EuroAnalysis XIV CY - Antwerp, Belgium DA - 2007-09-09 PY - 2007 AN - OPUS4-15692 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Beitrag der LA-ICP-MS zur Charakterisierung von Kupfer-Referenzmaterialien T2 - 21. ICP-MS Anwendertreffen und 8. Symposium über Massenspektrometrische Verfahren der Elementspurenanalyse CY - Dresden, Germany DA - 2008-09-17 PY - 2008 AN - OPUS4-17715 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Das Parallel-Seismic-Verfahren zur Bestimmung der Länge von Fundamentpfählen T2 - 68. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG) CY - Freiberg, Germany DA - 2008-03-03 PY - 2008 AN - OPUS4-17830 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Fast determination of the boron isotope ratio in steel and aluminium alloys using LA-ICP-MS T2 - 9th European Workshop on Laser Ablation in Elemental and Isotopic Analysis CY - Prague, Czech Republic DA - 2008-07-07 PY - 2008 AN - OPUS4-18063 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Application of different calibration strategies for the analysis of pure copper using nano- and femtosecond laser ablation ICP-MS T2 - European Winter Conference on Plasma Spectrochemistry CY - Graz, Austria DA - 2009-02-15 PY - 2009 AN - OPUS4-19007 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Nachträgliche Bestimmung der Länge von Spundbohlen an Schiffsanlegern T2 - Bauwerksdiagnose 2008 CY - Berlin, Germany DA - 2008-02-21 PY - 2008 AN - OPUS4-20116 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Effner, Ute T1 - Entwicklung einer Bohrlochsonde für Ultraschalluntersuchungen an Abschlussbauwerken in Endlagern N2 - Für die Qualitätssicherung von Abschlusswerken für Endlager wird eine Ultraschall-Bohrlochsonde entwickelt. Mithilfe dieser Sonde, die aus einer Vielzahl von einzelnen koppelmittelfreien Ultraschall-Punktkontaktprüfköpfen besteht, soll die Rissfreiheit der Versuchsbauwerke überprüft werden. Ein erster Prototyp der Sonde wurde mit einem kommerziellen Ultraschallgerät betrieben und bestand aus 12 Transversalwellen-Punktkontaktprüfköpfen von denen jeweils sechs als Sender und sechs als Empfänger parallelgeschaltet waren. Um den erzeugten Schalldruck der Bohrlochsonde zu steigern, wurde bei der Neuentwicklung die Prüfkopfanzahl erhöht und zusätzlich die laufzeitgesteuerte Anregung der einzelnen Prüfköpfe vorgesehen. Für die Anregung der Prüfköpfe mit programmierten Zeitverzögerungen wurde ein neuartiger mehrkanaliger Sender für bipolare Rechtecksignale entwickelt. Durch die Entwicklung der Bohrlochsonde soll eine dynamische Anpassung der Prüfkopf-Apertur sowie eine Fokussierung des Schallfeldes in Abhängigkeit der zu untersuchenden Tiefe erfolgen. Mithilfe entsprechender Anregungsfunktionen kann das Schallfeld der Bohrlochsonde unterschiedlich geformt werden, z. B. ist auch ein Schwenken des fokussierten Schallbündels möglich. Dadurch wird das erfasste Prüfvolumen begrenzt und auf diese Weise das Signal-Störverhältnis der Empfangssignale verbessert. In Kombination mit SAFT-Rekonstruktionsrechnungen wird durch eine optimierte Abstrahlcharakteristik der Sonde mit einem hohen Schalldruck unter verschiedenen Winkeln eine verbesserte Signalqualität und damit eine erhöhte Aussagesicherheit der Ergebnisse in der Objektabbildung erwartet. T2 - DGZfP-Jahrestagung 2021 CY - Online meeting DA - 10.05.2021 KW - Abdichtbauwerk KW - Zerstörungsfreie Prüfung KW - Ultraschall-Echoverfahren KW - Bohrlochsonde KW - Verschlussbauwerk PY - 2021 UR - https://jahrestagung.dgzfp.de/portals/jt2021/bb176/inhalt/poster.htm AN - OPUS4-52657 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ferrari, Mattia T1 - Contamination Pathways and Remediation Strategies in a Thallium-Contaminated Geological Environment (Valdicastello Carducci area, Tuscany, Italy) N2 - Stable thallium isotopes (205Tl and 203Tl) have emerged as a key-tool to investigate geochemical processesand, in particular, to trace the origin of thallium in polluted sites [1]. Thallium is recognized among the 13 priority pollutants of the environment due to its increasing contamination levels in industrialized country. The southern sector of the Apuan Alps (Central Italy) is characterized by the occurrence of baryte-pyrite-iron oxide orebodies with a high thallium content (up to 4200 μg/g on primary pyrites;[2]). Notably, historical mining sites of Mt. Arsiccio and of Pollone mine [3,4] near Valdicastello Carducci have attracted attention due to alarming levels of Tl detected in drinking water that are above the U.S.EPA threshold of 2 μg/l. In this study, we aimed to enhance our understanding of the Tl geochemical cycling from the orebodies to the spring and surface waters. We selected various samples to trace contamination pathways from the source (i.e.,pyrite) to sulfosalts and sulfates and, ultimately to waters and sediments. Thallium concentrations along with other heavy metals were determined as well as thallium isotope compositions following established chromatographic separation routines [5]. The results allowed to obtain paramount information on the fate of this contaminant from its origin to the variety of matrices analysed (sediments and spring and surface waters). Furthermore, we suggest a method for Tl remediation from polluted water following the study of [6], who found a secondary source of Tl in the public distribution system pipeline at Valdicastello area due to the addition of chlorine-based oxidants. This method, based upon [7], takes into account the pH-Eh stability field of Tl specie(Tl2O3). Starting from natural water conditions originating from acid mine drainage, we modified the pH using NaOH and then adjusted the Eh using NaClO, achieving a 98% ± 1% removal rate of thallium from water. T2 - Goldschmidt Conference 2024 CY - Chicago, IL, USA DA - 18.08.2024 KW - Contamination KW - Mining KW - Remediation Strategies KW - Tl isotopes PY - 2024 AN - OPUS4-61593 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epple, Niklas T1 - Monitoring of Concrete with Embedded Ultrasound Sensors, Coda Waves and a Novel Measurement Device N2 - Using embedded ultrasound (US) sensors in civil engineering structures and Coda Wave Interferometry (CWI), DFG research group CoDA aims for developing methods of concrete damage assessment by combination of Micro and macro scale simulations and experiments. BAMs goal within the project is the provision of small and durable measurement equipment on the one hand, and the investigation of damage sensitive parameters and development of an imaging algorithm on the other hand. In this study we focus on the development of the measurement system and the influence of temperature variations on the measurements. T2 - Summer School DFG FOR CoDA CY - Berchtesgaden, Germany DA - 27.09.2020 KW - Ultrasound KW - Coda Wave Interferometry KW - Structural Health Monitoring PY - 2020 AN - OPUS4-51382 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilder, Constanze T1 - Static and dynamic pile testing of reinforced concrete piles with structure integrated fibre optic strain sensors T2 - 5th European Workshop on Optical Fibre Sensors CY - Kraków, Poland DA - 2013-05-19 PY - 2013 AN - OPUS4-28826 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Büchner, Tina T1 - Studying uptake and processing of gold nanoparticles of different sizes by SERS and complementary tools T2 - XXIV. International Conference on Raman Spectroscopy (XXIV. ICORS) CY - Jena, Germany DA - 2014-08-10 PY - 2014 AN - OPUS4-31366 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zeise, Ingrid T1 - BrightSilica - A new plasmonic tool for bioanalytical applications T2 - XXIV. International Conference on Raman Spectroscopy (XXIV. ICORS) CY - Jena, Germany DA - 2014-08-10 PY - 2014 AN - OPUS4-31367 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Unsupervised Fusion of Scattered data Collected by a Multi-Sensor Robot on Concrete T2 - DGZfP Jahrestagung 2014 CY - Potsdam DA - 2014-05-26 PY - 2014 AN - OPUS4-33705 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Neue Ideen für die zerstörungsfreie prüfung von beton: Seismische Interferometrie und mehr T2 - DGZfP Jahrestagung 2014 CY - Potsdam DA - 2014-05-26 PY - 2014 AN - OPUS4-33708 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Improved Focusing Using Deconvolution within a Concrete Block T2 - DGZfP Jahrestagung 2014 CY - Potsdam DA - 2014-05-26 PY - 2014 AN - OPUS4-33706 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Galindo Guerreros, Julio Cesar T1 - Crosshole and Downhole Seismics: A New Quality Assurance Tool for Jet Grout Columns T2 - NDT-CE 2015 CY - Berlin, Germany DA - 2015-09-15 PY - 2015 AN - OPUS4-34384 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grohmann, Maria T1 - Reverse Time Migration: Introduction of a New Imaging Technique for Ultrasonic Measurements in Civil Engineering T2 - NDT-CE 2015 CY - Berlin, Germany DA - 2015-09-15 PY - 2015 AN - OPUS4-34389 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Quality Assurance of Jet Grouting Columns Using Seismic Methods T2 - EAGE Near Surface Geoscience CY - Torino, Italy DA - 2015-09-06 PY - 2015 AN - OPUS4-34428 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Using embedded ultrasonic sensors for active and passive concrete monitoring T2 - NDT-CE 2015 - International Symposium Non-destructive Testing in Civil Engineering CY - Berlin, Germany DA - 2015-09-15 PY - 2015 AN - OPUS4-35206 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kruschwitz, Sabine A1 - Niederleithinger, Ernst T1 - ERT Measurements on tailings dams using multi-channel spectral induced polarization (SIP) N2 - The often poor construction and low maintenance level of tailings dams has caused serious accidents. The EC funded Project TAILSAFE is aimed at the non-destructive assessment of tailings facilities for stabilization analyses and the development of better management methods. The focus of geophysical field studies was on the discrimination of different layering and construction steps as well as the determination of the spatial (relative) water content in the dams. SIP measurements at three tailings facilities different in their geological backgrounds, composition and age have been conducted. T2 - 11th European Meeting of Environmental and Engineering Geophysics CY - Palermo, Italy DA - 04.09.2005 KW - TAILSAFE KW - Non-destructive assessment KW - Stabilization analyses PY - 2005 AN - OPUS4-36560 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hutchinson, R. T1 - Performance and data from an elemental microscope - The NWR image N2 - The NWRimage system is the first elemental imaging-specific laser ablation instrument, offering breakthrough sub-micron spatial resolution and ultra-fast signal response for high throughput rates. Laser ablation (LA) systems are used in conjunction with Inductively Coupled Plasma Mass Spectrometry (ICP-MS) systems to detect and analyze tiny amounts of material. As ICP-MS systems have become more sensitive, a need has emerged for LA imaging tools with < 1 micron spatial resolution - a capability not previously available on the market. The NWRimage is provided with a carefully designed aerosol path from point of ablation to injection into the ICP itself. This aerosol path combined with a novel Dual Concentric Injector (DCI) ICP torch, yields < 50ms signal response to accelerate the speed of analysis and enabling enhanced sample throughput. The LA system is used for bio imaging of single cells and medical tissue samples. T2 - Winter Conference on Plasma Spectrochemistry 2016 CY - Tucson, Arizona, USA DA - 11.01.2016 KW - Laser ablation KW - Bio imaging PY - 2016 AN - OPUS4-36513 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sproesser, Gunther T1 - Sustainable welding production N2 - The project Sustainable Welding Production is presented with its motivation, results and impact as well as with demonstrator case study T2 - 23rd Conference on Life Cycle Engineering CY - Berlin, Germany DA - 22.052016 KW - Gas metal arc welding KW - Hybrid laser arc welding KW - High power welding KW - Energy efficiency KW - Life cycle assessment PY - 2016 AN - OPUS4-36536 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hutchinson, R. T1 - The NWRiMAGE - an elemental microscope N2 - The NWRiMAGE provides unique technologies for high-speed imaging with genuine sub-micron ablation. In March 2015 ESI installed the first NWR iMAGE at the Bundesanstalt für Materialforschung und –prüfung (BAM) in Berlin, and since then it has undergone extensive use in bio-imaging. The Dual Concentric Injector (DCI), a new interface between laser and plasma, has been integrated into ESI´s TwoVol2 ablation cell. This technology was developed in collaboration with the University of Loughborough, and provides single shot transition at the ICP-MS of < 20 ms with high sample transport efficiency, giving superior signals above background and improve spatial resolution capability. Here we describe some data showing ultra-fast transitions of single shot ablation, sub-micron ablation experiments and rapid acquired imaging. T2 - 13th European Workshop on Laser Ablation CY - Ljubljana, Slovenia DA - 12.07.2016 KW - Laser ablation KW - Trace element KW - Imaging PY - 2016 AN - OPUS4-36999 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fabry, Çağtay T1 - Prozessregelung: MSG-Engspaltschweißen (IGF-Nr. 17.923N) N2 - Übersichtposter zu IGF-Vorhaben 17.923N "Sensorgestütztes MSG-Engspaltschweißen von Feinkornstählen mit modifizierter Prozessführung im Dickblechbereich" (DVS-Nr. 03.111) T2 - Fachbereichspräsentation 9.3 CY - Berlin, Germany DA - 01.03.2018 KW - MSG-Engspaltschweißen KW - Adaptives Schweißen KW - Lichtbogensensorik KW - Füllgradregelung PY - 2018 AN - OPUS4-44361 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fabry, Çağtay T1 - Digitalisierung: iLap – Adaptive Prozesse für die vernetzte Produktion N2 - Übersichtposter zu TP 2.3: "Adaptive Lichtbogenschweißprozesse" des BMBF WKP Verbundprojekts iLap T2 - Fachbereichspräsentation 9.3 CY - Berlin, Germany DA - 01.03.2018 KW - Digitalisierung KW - Schweißdatenmanagement KW - Vernetzte Produktion KW - Prozessregelung KW - Adaptives Schweißen PY - 2018 AN - OPUS4-44359 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wang, Xin T1 - Advanced ultrasonic instrumentation for interferometric monitoring N2 - Main aim is to improve ultrasonic sensor networks to monitor concrete structures under dynamic loads. Novel algorithms have to be developed and tested to separate the influence of various effects for field data. Ways to quantify the interpretation of ultrasonic data e.g. in terms of degree of damage or capacity, have to be found. Improve and simplify imaging techniques, extend them to arbitrary structures, to foster field applications. T2 - Implementation day of INFRASTAR CY - BASt, Bergisch Gladbach, Germany DA - 20.03.2018 KW - CODA wave interferometry KW - NDT KW - Sensor KW - Cracks KW - Embedded ultrasonic sensor PY - 2018 AN - OPUS4-44585 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike A1 - Phukphatthanachai, Pranee T1 - Quantification of sulphur in copper metals by isotope dilution LA-ICP-MS using polyethylene frits N2 - Sulphur is one of the relevant impurities in copper and its alloys affecting their material properties. To ensure the quality of copper products, fast direct solid sampling techniques are very attractive. However, for the calibration suitable matrix reference materials are required. For the certification of such reference materials appropriate, SI-traceable analytical methods are essential. Therefore, a procedure was developed to quantify total sulphur in copper by combining the classical isotope dilution (ID) technique and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Here, for the first time, polyethylene (PE) frits were used to prepare appropriate solid samples for the sulphur quantification in copper metals (alloyed/unalloyed) by isotope dilution LA-ICP-MS. The properties of the PE frit meet the requirements as porous material with high absorption efficiency, thermal and chemical resistance as well as low sulphur blank. Different copper reference materials were used to develop and validate the procedure. The copper samples were spiked with 34S, digested with nitric acid and then the digests were absorbed on PE frits. After drying, the frits were analysed by LA-ICP-IDMS using a Nd:YAG laser at 213 nm coupled to an ICP sector field mass spectrometer. It could be demonstrated, that the sample solution dispersed on the frits did not influence the 32S/34S ratio significantly even though the sulphur intensities were fluctuating along the scanned lines. Relative standard deviations of the isotope ratios were below 5 % in average between three line scans (except for the pure spike solution and procedure blank). The measurement results were validated by comparing them with the results obtained by conventional ICP-IDMS after analyte-matrix separation. Plotting the mass fraction of sulphur in copper obtained by LA-ICP-IDMS versus those obtained by ICP-IDMS yields a linear curve with a correlation coefficient of 0.9999 showing a strong agreement between both techniques. The metrological traceability to the SI from the kg down to the sulphur mass fraction in copper is established by an unbroken chain of comparisons, each accompanied by an uncertainty budget. Thus, the measurement results are considered reliable, acceptable and comparable within the stated measurement uncertainty. T2 - 14th European Workshop on Laser Ablation (EWLA) CY - Pau, France DA - 26.06.2018 KW - ICP-MS KW - Laser ablation KW - Isotope dilution KW - Copper PY - 2018 AN - OPUS4-45569 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Studying cellular uptake of metal-containing nanoparticles by LA-ICP-MS N2 - Nanoparticles (NPs) have potential applications in medical diagnostics, imaging, drug delivery and other kinds of therapy. Furthermore, studies concerning nanoparticle uptake by cells are important for risk assessment. Size, shape and surface modification of the NPs determine the uptake rate and pathway into the cells, and therefore impact specific cell components and processes. Understanding the different uptake mechanisms and involved processes require sub-cellular resolution to determine, for example, whether the nanoparticles are reaching the nucleus. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is an established quantitative multi-elemental analysis and mapping technique. However, sub-cellular imaging has traditionally been challenging to achieve due to a lack of sensitivity at small laser spots. But now novel laser ablation systems with improved sensitivity and washout time allow imaging at high lateral resolution with spot sizes down to 1 µm. Here LA-ICP-MS was applied for the imaging of individual fibroblast cells to study the uptake and intracellular processing of metal-containing NPs. To indicate cell morphology the local distribution of naturally occurring elements in cells like P and Zn was measured, too. Our results show that LA-ICP-MS can be used to localise nanoparticle aggregates within cellular compartments. The studied NPs accumulate in the perinuclear region in the course of intracellular processing, but do not enter the cell nucleus. The uptake efficiency depends strongly on the physico-chemical properties of the nanostructures as well as on the incubation conditions like concentration and incubation time. The potential of LA-ICP-MS for analysis at single cell level will be demonstrated. T2 - Euroanalysis 2017 CY - Stockholm, Sweden DA - 28.08.2017 KW - Laser ablation KW - ICP-MS KW - Nanoparticle KW - Cell PY - 2017 AN - OPUS4-41883 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Iznaguen, Hassan T1 - Homogeneity of dispersed brominated flame retardants (HBCD) in polystyrene by LA-ICP-MS and XRF N2 - Polybrominated Flame retardants (PBFR) are of concern as emerging pollutants resulting from plastic waste, which set them free because these additives are not chemically bonded to the polymer. For this reason we fortunately use the laser ablation inductive coupled mass spectrometry (LA-ICP-MS) to verify the amount of 1,2,5,6,9,10-Hexabromocyclododecane (HBCD) in polystyrene (PS) resp polybrominated diphenylether (BDE-209) in polypropylene (PP). Results from X-ray fluorescence spectroscopy (RFA) are compared with those from LA-ICP-MS for studying the homogeneity of PBFR such as BDE-209 (0.1% wt. in PP) or HBCD (1% wt. in PS). RFA is well suited for the reason that it is a rapid, non-destructive and sensitive method. We also use the LA-ICP-MS as reference method for quantification of the content of PBFR herein and by measurement of ABS (acrylonitrile–butadiene–styrene, ABS) and correlate these data with RFA measurements. The necessity for the proof of homogeneity of BFR additives resulting from the use of these samples for weathering studies we perform to discover unknown transformation process and to get a certified reference method. For studying the homogeneity partition of BFR in PS or PP, we need to estimate the relation V/N (V=ablated volume, N=molar amount) for any studied area, which is in case of a homogenous partition for every area identical. To measure the ablated volume we applied the white light interference microscopy from which we derived the theoretical amount of ablated flame retardant. In correlation to an ablated CRM we get the molar amount of ablated BFR. From the counts (RFA) resp. the ratio of peak area of the bromine isotope we derive the concentration of BFR in ablated PS resp. PP. Another approach uses the applied external standard addition using RFA scanning. A cylindrical probe of defined geometry, corresponding to a defined amount of BFR, was removed from PS. Into this hole was added a solution of BFR of defined concentration and letting dried. RFA scanning of background and the hole gives a direct confirmation of the included amount of BFR herein. According to ISO 13528 samples for proficiency tests were acknowledged as homogenous if the criteria for homogeneity ss<0.3sigma were fulfilled. T2 - ANAKON 2017 CY - Tübingen, Germany DA - 03.04.2017 KW - LA-ICP-MS KW - RFA KW - PBFR PY - 2017 AN - OPUS4-40248 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Bridge Monitoring by Passive Seismic Data, First tests at the BLEIB reference structure N2 - Seismic wave velocities are related to elastic moduli and other properties and can serve as indicators for changes in the material. They are conventionally determined by active measurements. Using ideas from seismic interferometry Determination from stacked cross-correlations of registrations of man- made and natural noise (“passive seimics“) is an effective alternative, as these data might be available from vibration monitoring anyway. The validity of this approach is demonstrated by a simple experiment based on recordings of man made noise using accelerometers at the reference structure. The s-wave (or more probable. guided wave) velocity was determined to be 2100 m/s in both active and passive experiments. T2 - Passive Imaging and monitoring in wave physics: from seismology to ultrasound CY - Cargese, France DA - 05.06.2017 KW - Passive Seismics KW - Bridge monitoring KW - Elastic wave velocity PY - 2017 AN - OPUS4-40575 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Iznaguen, Hassan T1 - Homogeneity of dispersed brominated flame retardants (HBCD) in polystyrene by LA-ICP-MS and XRF N2 - To investigate the release or migration of flame retardants from polypropylene (PP) and polysytrene (PS) samples with a defined content of flame retardants as additives were prepared and used. Therefore a distinct 1,2,5,6,9,10-hexabromocyclododecane HBCD concentration of 1 wt.% in PS resp. a specified bromodiphenylether (BDE-209) of 0.1 wt.% in PP is defined. For the preparation of the samples granular PP or PS are extruded together with the BFR additives. Even the result of this process may lead to homogenous partitions of the BFR additives. So, the distribution of these additives must be proven before using the samples in an experimental setup for weathering studies. In accordance to the regulation of RoHS (2011/65/EU) , where the use of XRF is recommended for the proof of flame retardants in electronic consumer products, we use this method as a reference to the laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Therefore we present the correlation of these experiments. The experimental setup for the XRF experiment is like a standard addition: in cavities, which are introduced in the sample plates subsequently, solutions of defined concentration of flame retardants are put in there. According to the idea of standard addition, we get an information of the originating mass fraction of flame retardant in each sample and we can monitor the release and migration of these additives during/after the weathering experiments with high precision. An internal standard of HBCD is added as a marker and can be analyzed after the weathering experiment. T2 - 8th European Weathering Symposium EWS CY - Wien, Austria DA - 20.09.2017 KW - LA-ICP-MS KW - XRF KW - BFR PY - 2017 AN - OPUS4-43313 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Ultraschallprüfung von Verschlussbauwerken im Salinar N2 - Zu jedem Endlager gehört die Entwicklung eines Verschlusskonzept. Im Endlager Morsleben und an anderer Stelle werden in Abhängigkeit vom Wirtsgestein verschiedene Materialien und Bauweisen für Streckenverschlüsse entwickelt und in großem Maßstab erprobt. Hierzu gehören auch Maßnahmen der Qualitätssicherung, die Informationen über Ausführung und Zustand der Versuchsbauwerke liefern. Hierzu werden von der Bundesanstalt für Materialforschung und -prüfung (BAM) für verschiedene Forschungsvorhaben und Prüfaufträge Methoden und Geräte getestet, verbessert und vor Ort unter Tage eingesetzt Die hier beschriebenen Verfahren lassen sich auch zu Untersuchungen im Wirtsgestein anwenden. T2 - Tage der Standortauswahl CY - Freiberg/S., Germany DA - 11.02.2021 KW - Endlager KW - Verschlussbauwerke KW - Qualitätssicherung KW - Ultraschall PY - 2021 AN - OPUS4-54166 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Studying nanoparticle-cell interaction by ICP-MS based techniques N2 - Nanoparticles (NPs) have found a wide range of applications in research and industry. Thereby the interaction of NPs with biological systems like cells has become a major field of interest, ranging from medical applications to nanotoxicology. Size, shape and surface modification of the nanomaterials determine the uptake rate and pathway into the cells, and therefore impact specific cell components and processes. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is an established quantitative multi-elemental analysis and mapping technique. In recent years, it was shown that LA-ICP-MS can provide quantitative as well as distribution information of metal containing nanoparticles (NPs) in cell samples. Here LA-ICP-MS was applied for the imaging of individual fibroblast cells to study the uptake and intracellular processing of NPs. Our results show that LA-ICP-MS can be used to localize nanoparticle aggregates within cellular compartments. The studied NPs accumulate in the perinuclear region in the course of intracellular processing, but do not enter the cell nucleus. The uptake efficiency depends strongly on the physico-chemical properties of the nanostructures as well as on the incubation conditions like concentration and incubation time. ICP-MS was used to determine the composition of the nanomaterials as well as the number of NPs in cells after acid digestion of the samples. T2 - 13. Symposium „Massenspektrometrische Verfahren der Element­spurenanalyse“ & 26. ICP-MS-Anwendertreffen CY - Berlin, Germany DA - 03.09.2018 KW - ICP-MS KW - Nanoparticle KW - Cell KW - Laser ablation PY - 2018 AN - OPUS4-45860 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Ultrasonic monitoring of full-scale load experiments N2 - Previous work has shown that ultrasonic monitoring using externally applied or embedded transducers and imaging methods based on coda wave interferometry are able to detect subtle changes in concrete elements. In this study, a limited number of embedded transducers has been used to monitor changes in several 12 m long two-span concrete beams subjected to point or linear loads until failure. The ultrasonic results showed the high sensitivity to stress changes and the nonlinear character of the associated effects. However, the ultrasonic features showed a very good correlation to several conventional monitoring parameters. For higher loads (significant amount of cracking), the technique had to be modified to cope with large wave velocity variations and high decorrelation compared to the reference signal. Using a very simple imaging procedure, the 2D stress field inside the beam has been visualized including inhomogeneities and artifact at places where cracking occurred at higher loads. The technique has the potential to be included in real time monitoring systems. T2 - ASNT SMT/NDT-CE 2018 CY - New Brunswick, NJ, USA DA - 27.8.2018 KW - Concrete KW - Monitoring KW - Ultrasound KW - Coda wave interferometry PY - 2018 AN - OPUS4-45827 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Häberle, Nicolas T1 - Multi-phase viscoplastic material modelling for grade S960QL steel N2 - Overview of recent scientific contributions on the experimental investigation and modeling of the grade S960QL steel multi-phase viscoplastic deformation behaviour with applications to computational welding mechanics. T2 - The 12th International Seminar "Numerical Analysis of Weldability" CY - Seggau, Austria DA - 23.09.2018 KW - Residual stress KW - Viscoplasticity KW - Material modeling KW - Grade S960QL steel PY - 2018 AN - OPUS4-46510 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oesch, Tyler T1 - Quality assurance of engineered barriers in underground waste disposals N2 - This poster provides an overview of ultrasonic investigations of an engineered test barrier at ERAM Morsleben, which were completed as part of contractual work with the Bundesgesellschaft für Endlagerung mbH (BGE). This includes both experiments with the Large Aperture Ultrasound System (LAUS) and the ultrasonic borehole array. Also included in the poster is a description of the planned BAM thematic project “SealWasteSafe”. In particular, the proposed geopolymer materials are described and future research requirements are detailed. T2 - 1. Statuskonferenz Endlagerung von hochradioaktiven Abfällen CY - Berlin, Germany DA - 08.11.2018 KW - Large Aperture Ultrasound System (LAUS) KW - Ultrasonic Borehole Array KW - SealWasteSafe KW - Geopolymer KW - Crack Detection PY - 2018 AN - OPUS4-47021 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weber, Gert T1 - Weldbonding of High Strength Steels in Automotive Body-in-White Applications T2 - EURADH 2012 CY - Friedrichshafen, Germany DA - 2012-09-16 PY - 2012 AN - OPUS4-27125 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - LA-ICP-MS zur Analyse einzelner Zellen T2 - 23. ICPMS Anwendertreffen und 10. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse CY - Tulln an der Donau, Austria DA - 2012-09-10 PY - 2012 AN - OPUS4-27480 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - Evaluation of solution doped powder pellets for the analysis of pure copper using PP-TOFMS T2 - 6th International GD Day CY - Paris, France DA - 2012-09-21 PY - 2012 AN - OPUS4-27481 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schempp, Philipp T1 - Influence of welding speed and grain refinement on grain morphology in aluminium GTA weld metal T2 - International Conference and Expo on Materials Science & Engineering CY - Chicago, IL, USA DA - 2012-10-22 PY - 2012 AN - OPUS4-26904 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pittner, Andreas T1 - Analysis of head and fluid flow phenomena of double-sided V-groove welds of high-strength low alloy steel T2 - 10th International Seminar "Numerical Analysis of Weldability" CY - Seggau-Graz, Austria DA - 2012-09-24 PY - 2012 AN - OPUS4-28684 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst A1 - Wiggenhauser, Herbert A1 - Mielentz, Frank A1 - Bertschat, Anja-Sophie A1 - Mierschke, Vivien A1 - Werner, Andreas T1 - Untersuchung von Veränderungen in Beton mit Ultraschall-Codawelleninterferometrie N2 - Die Coda transmittierter Ultraschallsignale in Beton enthält Informationen zu Struktur und Zustand des Materials bzw. deren Änderung. Relevant sind u. a. Temperatur, Stress, Feuchtigkeit und verschiedene Schädigungsmechanismen. Die zahlreichen Einflussfaktoren sind nur schwer zu trennen und die Messeffekte oft zu Beginn sehr klein.Die CWI ermöglicht die Detektion kleinster Geschwindigkeitsveränderungen durch den Vergleich, der in kleinen Schritten gestauchten oder gestreckten Signalen mit eine Referenzmessung. Andere Indikatoren für Änderungen im Material sind: • Kreuzkorrelation • Laufzeit direkte Welle • Energie/Amplitude • Änderungen im Frequenzspektrum Die beschriebene Technik wird von uns bisher primär in klein- und großskaligen Laborversuchen genutzt. Die Forschung konzentriert sich auf die Untersuchung und Trennung verschiedener Einflusseffekte. Aber auch erste reale Bauwerke wurden schon instrumentiert, z. B. Brücken und eine Tunneldecke. T2 - 77. Jahrestagung der Deutschen Geophysikalischen Gesellschaft CY - Potsdam, Germany DA - 27.03.2017 KW - Beton Ultraschall Monitoring PY - 2017 AN - OPUS4-39661 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liao, Chun-Man T1 - Investigation of ambient noise seismological methods on a bridge model N2 - This poster is to introduce the research work in the GIOTTO project funded by Federal Ministry of Education and Research (BMBF) in the frame of “early warning of earthquakes” program. The aim of this work is to investigate the application of seismological noise-based monitoring for bridge structures. A large-scale two-span concrete bridge model with a build-in post-tensioning system, which is exposed to environmental conditions, is chosen as our experimental test structure. Ambient seismic noise measurements were carried out under different pre-stressed conditions. Using the seismic interferometry technique, which is applied to the measurement data in the frequency domain, we reconstruct waveforms that relate to wave propagation in the structure. The coda wave interferometry technique is then implemented by comparing two waveforms recorded in two pre-stress states. Any relative seismic velocity changes are identified by determining the correlation coefficients and reveal the influence of the pre-stressing force. The decrease of the wave propagation velocity indicates the loss of the pre-stress and weakening stiffness due to opening or event extension of cracks. We conclude that the seismological methods used to estimate velocity change can be a promising tool for structural health monitoring of civil structures. T2 - EGU General Assembly 2021 CY - Online meeting DA - 19.04.2021 KW - Ambient seismic noise measurements KW - Coda wave interferometry KW - Pre-stress loss PY - 2021 DO - https://doi.org/10.5194/egusphere-egu21-2773 AN - OPUS4-52584 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blanchard, V. A1 - Traub, Heike T1 - Central project for biochemical analysis of proteoglycans and glycosaminoglycans and for element-specific microscopy N2 - Nearly all disease processes are associated with variations of components of the extracellular matrix (ECM) that are typically observed during the development of inflammation. This concerns for example proteoglycans and their associated glycosaminoglycans (GAG), which have been shown to bind to cationic metal imaging probes due to their strong complexing activity. The complexing activity largely depends on the degree of GAG sulfation and/or carboxylation as well as on the GAG isomericity. In this central project, we investigate GAG structures from inflammatory disorders (namely cardiovascular diseases, inflammatory intestinal diseases and neuroinflammation) provided by researchers of the Collaborative Research Center at the molecular disaccharidic level using chromatographic and mass spectrometric methods. In parallel, the spatial localization and quantification of metal-based imaging probes are evaluated by LA-ICP-MS imaging. T2 - 1st International Symposium In vivo Visualization of Extracellular Matrix Pathology CY - Online Meeting DA - 27.05.2021 KW - Laser ablation KW - ICP-MS KW - MALDI PY - 2021 AN - OPUS4-52716 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Saul, Herbert T1 - Gefahrguttransport - Ablaufdiagramm "Verwaltungsvorgang" N2 - Das Poster stellt die verschiedenen Schritte zur Bearbeitung eines Verwaltungsvorangs dar. Dieser beginnt mit der Anbahnung des Vorgangs, mit Prüfung der Rechtsvorschriften und der Erforschung des Kundenwillens. Im nächsten Schritt wird die Vollständigkeit der Unterlagen geprüft, bevor im Fall positiv geprüfter Unterlagen (Nachweis der Erfüllung der Rechtsanforderungen) der Bescheid erstellt und der Verwaltungsakt abgeschlossen werden kann. T2 - Abteilungskolloquium "Verwaltungsrecht für Zulasser" CY - BAM-Berlin, Germany DA - 16.02.2017 KW - Antragstellung KW - Verwaltungsakt KW - Bescheid KW - Nachforderung PY - 2017 AN - OPUS4-39213 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Popiela, Bartosz T1 - Impact of the Initial Loading on the Performance of Type 4-CPVs N2 - Poster presentation on the impact of initial loading on the performance of type 4 composite pressure vessels presented at the 4th Netzwerktreffen Leichtbau Berlin-Brandenburg. T2 - 4. Netzwerktreffen Leichtbau Berlin-Brandenburg CY - Berlin, Germany DA - 01.10.2024 KW - Composite KW - Pressure vessel KW - Safety KW - Burst test PY - 2024 AN - OPUS4-61197 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mair, Georg W. A1 - Saul, Herbert A1 - Duffner, Eric T1 - Composite Pressure Vessels for Hydrogen - Research for Safety N2 - Referring to the inter-departmental project group "Pressure Equipment" and the section "Pressure Equipment-pressure receptacles; Fuel Gas Storage Systems" developed from, it is shown here how research on safety aspects, technical regulations and the activities of the Federal Institute BAM in its role as competent authority interact to the advantage of safety of composite pressure vessels. T2 - FiBreMoD Steering Committee Meeting and Training Unit #5 CY - BAM Berlin, Germany DA - 04.10.2017 KW - Pressure Equipment KW - ECE R110 KW - TPED KW - StorHy KW - HyComp KW - Service life tests KW - UN composite cylinders KW - PN020 KW - GTR KW - ECE R134 KW - Competent authority PY - 2017 AN - OPUS4-42461 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ruehle, Bastian T1 - Nano- and Advanced Materials Synthesis in a Self-Driving Lab (SDL) N2 - Nano- and advanced materials have been recognized as a key enabling technology of the 21st century, due to their high potential of driving innovations in new clean energy technologies, sustainable manufacturing by substitution of critical raw materials and replacement of hazardous substances, breakthroughs in energy conversion and storage, improvement of the environmental performance of products and processes, and facilitation of circularity. Consequently, improving tools that enhance the development and optimization cycle of nano- and advanced materials is crucial. In this contribution, we present our Self-Driving Lab (SDL) for Nano and Advanced Materials [1], that integrates robotics for batched autonomous synthesis – from molecular precursors to fully purified nanomaterials – with automated characterization and data analysis, for a complete and reliable nanomaterial synthesis workflow. By fully automating these three process steps for seven different materials from five representative, completely different classes of nano- and advanced materials (metal, metal oxide, silica, metal organic framework, and core–shell particles) that follow different reaction mechanisms, we demonstrate the great versatility and flexibility of the platform. The system also exhibits high modularity and adaptability in terms of reaction scales and incorporates in-line characterization measurement of hydrodynamic diameter, zeta potential, and optical properties (absorbance, fluorescence) of the nanomaterials. We discuss the excellent reproducibility of the various materials synthesized on the platform in terms of particle size and size distribution, and the adaptability and modularity that allows access to a diverse set of nanomaterial classes. These features underscore the SDL’s potential as a transformative tool for advancing and accelerating the development of nano- and advanced materials, offering solutions for a sustainable and environmentally responsible future. T2 - Accelerate 2025 CY - Toronto, Canada DA - 11.08.2025 KW - Nanomaterials KW - Advanced Materials KW - Automation KW - SDL KW - MAP PY - 2025 AN - OPUS4-63935 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Jonathan T1 - High-resolution in-situ image analysis in laser powder bed fusion N2 - Visual images captured - in-situ - in laser powder bed fusion (PBF-LB/M) provide valuable insights into process dynamics. This poster presents methods for analyzing high-resolution images with a spatial resolution of 17 µm/pixel and a size of 9344 × 7000 pixels. In the context of identifying microstructural anomalies, the relationship between the contrast values derived from the grey-level co-occurrence matrix (GLCM) of post-exposure images and ex situ measurements of surface roughness, porosity, and melt pool depth is illustrated. Furthermore, a workflow to detect process anomalies in post recoating images using an edge device is presented. T2 - BAM Advisory Council Meeting CY - Berlin, Germany DA - 25.06.2025 KW - Additive manufacturing KW - High resolution camera KW - Image processing KW - In situ monitoring KW - Powder bed fusion PY - 2025 AN - OPUS4-63990 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Soruco Aloisio, Ricardo T1 - Digitale Abbildung von Assets - Dateninfrastruktur für Industrie 4.0 N2 - Im Rahmen der von der BAM und anderen Partnern ins Leben gerufenen Initiative „Digitale Qualitätsinfrastruktur“ liegt der Fokus u.a. auf der Entwicklung von neuen Zertifizierungsworkflows. Dabei ist eine besondere Bedeutung dem Zusammenführen von Operational Technology (OT) und Informationstechnik (IT) beizumessen. Zur Datenintegration aus der Sensor-Feldebene einer Versuchs-Wasserstofftankstelle wurde eine solche Infrastruktur aufgebaut. Zudem wurde der von der Plattform Industrie 4.0 empfohlene standardisierte Zwilling „Verwaltungsschale“ für einige Assets der Wasserstofftankstelle implementiert. T2 - QI-Forum 2024 CY - Berlin, Germany DA - 09.10.2024 KW - Datenintregration KW - IT KW - Infrastruktur KW - OT KW - Open Source KW - Software KW - VPN KW - Verwaltungsschale PY - 2024 AN - OPUS4-63493 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Adame, Andressa T1 - Development of an automatic system for in situ analysis of soil using a handheld Energy Dispersive X-Ray Fluorescence (EDXRF) N2 - The project “Intelligence for Soil” (I4S) aims at the design of an integrated system for improvement of soil functions and fertilizer recommendations. This system is composed by different sensors that will provide a detailed assessment of soil properties and processes, which are prerequisites for a site-specific, resource-saving and ecofriendly soil management, considering the soil as a sustainable resource for the bioeconomy. One of these sensors will be an energy-dispersive X-Ray Fluorescence spectrometer. It is a non-destructive technique suitable for in-situ measurements due to a minimum sample preparation and it allows fast multielement analyses. In this work, an automatic system has been developed using a handheld equipment from Olympus (Vanta C series). A polypropylene (PP) film was used to protect the measuring window of the device from dust and possible cross-contamination. To control the stepper motor that unrolls the PP film, a microcontroller was used to ensure that a piece of clean PP is in front of the measuring window for each new analysis. Preliminary calibration studies using pre-defined methods, Geochem and Soil Methods, were performed with the following Certified Reference Materials (CRMs): NRC Till 1-3, NIST 2710, BAM U110, ERM CC141, BCR 142R, IAEA Soil 7. The CRMs were measured 10 times at different spots. The spot size was 10 mm in diameter, irradiation time was 60 ? s. The averaged data from X ray characteristic emission line intensities for Al, P, Si, Ca, Fe, Mn, Zn, Cu and Ni Kα were in close agreement with certified mass fraction data. The linear correlation coefficients (r) ranged from 0.852 for P to 0.999 for Mn. A second round of calibration studies were performed with the following CRMs: GBW07402, GBW 07405, NCS DC 73023, NCS DC 73030, NCS DC 85109, NCS DC 87104, NIST 1646a, NIST 2704, NIST 2710, NRC Till 1-3, VS 2498-83, and the same pre-defined methods and experimental parameters were employed. The results of the 13 CRMs were now compared with the values obtained by a validated WDXRF method. The linear correlation coefficients (r) ranged from 0.998 for Ca to 0.999 for Zn. Other elements such as S, K and Ti can also be properly determined, but validation still requires more robust calibration models. Further calibration studies will be performed in order to circumvent matrix effects and to guarantee reliable results. Besides that, the automatic system will be placed on a mobile sensor platform and the system will be tested in the field. A guidance for on site-specific fertilization integrating the results obtained from different sensors placed on the platform is expected. T2 - 16. Kolloquium Prozessanalytik CY - Online Meeting DA - 23.11.2020 KW - Röntgenfluoreszenz KW - Boden KW - XRF KW - Soil PY - 2020 AN - OPUS4-51776 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Schnelle Identifizierung von Mineralwolle mittels Nah-Infrarot-Spektroskopie N2 - Künstliche Mineralfasern (KMF) werden weltweit in vielfältiger Weise als Dämmstoffe verwendet. Jährlich fallen in Deutschland ungefähr 20 Millionen Tonnen KMF an, die nach dem Abriss auf Deponien entsorgt werden müssen. Grundsätzlich besteht jedoch die Möglichkeit der Rückführung dieser Materialien in den Produktionsprozess. Dafür ist es notwendig, anfallende KMF sowohl nach Material (Glaswolle, Steinwolle) als auch nach Alter zu sortieren. Auf der Suche nach einer Methode, die es grundsätzlich gestattet eine schnelle Untersuchung vor Ort auf einer Baustelle durchzuführen, wurde die Nah-Infrarot (NIR) Spektroskopie unter Verwendung eines Prozessspektrometers mit Reflexionssonde getestet. Anhand von Laboruntersuchungen an 70 KMF Proben, die entweder betriebsneu waren oder bundesweit auf Baustellen gesammelt wurden, konnte eine NIR-basierte Methode zur Unterscheidung in Glas- und Steinwolle entwickelt werden. Mittels Partial Least Square Diskriminanzanalyse (PLS-DA) der NIR Spektren wurde basierend auf 40 zufällig ausgewählten Proben ein chemometrisches Modell kalibriert, das erfolgreich zur Klassifizierung der verbleibenden 30 Proben eingesetzt werden konnte. Unabhängig von Farbe, Dichte oder Alter der untersuchten KMF Proben war es möglich, eine 100% korrekte Zuordnung des Materials zu erzielen. Die nötigen Referenzwerte wurden unter Nutzung eines Röntgenfluoreszenzspektroskopischen Verfahrens über den Elementgehalt nach VDI 3492 ermittelt. Insgesamt ist der experimentelle Aufwand für die Durchführung und Auswertung der NIR Messungen gering und manifestiert sich vor allem in der Kalibrierphase, die in diesem Fall die Untersuchung von 8-fach aliquotierten Probestücken der 70 KMF umfasste. Nur bei deutlich feuchtem Material muss ein zusätzlicher Trocknungs-schritt berücksichtigt werden. Das vorgestellte Verfahren wurde nachfolgend zu einem Patent angemeldet. Untersuchungen zu einer weiteren Unterscheidung der KMF nach Alter sind geplant. T2 - 16. Kolloquium Prozessanalytik der GDCh & Dechema CY - Online meeting DA - 23.11.2020 KW - Mineralwolle KW - NIR KW - Chemometrie PY - 2020 AN - OPUS4-51731 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Industrielle Anwendungen der Niederfeld-NMR-Spektroskopie für die Prozess- und Qualitätskontrolle von Silanen N2 - Aus der Kombination verschiedener Silane als Ausgangsstoffe und als Produkt der Hydrolyse durch eine Reihe von Alkoholen oder Wasser ergibt sich eine Palette von hunderten technischen Produkten für verschiedenste Anwendungen. Funktionelle Trialkoxysilane haben sich in den vergangenen Jahren als vielseitig einsetzbare Organosilane erwiesen. Die Einsatzgebiete erstrecken sich vom Witterungsschutz von Bauwerken über haftvermittelnde Eigenschaften in der Glasfaserindustrie, bei Dicht- und Klebstoffen, in Farben und Lacken bis hin zur Modifizierung von polymeren Werkstoffen. Kommerzielle Benchtop-NMR-Spektrometer haben das Potential auch im Bereich der Silanchemie als Online-Methode zur Reaktionsüberwachung und für die Qualitätskontrolle eingesetzt zu werden. Interessante NMR-Kerne für die oben genanntem Produkte sind 1H und 29Si. In einer gemeinsamen Forschungs-kooperation zwischen EVONIK und BAM wurde anhand verschiedener Fallstudien die Anwendbarkeit der Niederfeld-NMR-Spektroskopie zur chemischen Analyse von Silanen evaluiert. Die Möglichkeiten der Konzentrationsbestimmung erweitern die Anwendungsgebiete, in denen bestehende Technologien wie z. B. NIR, Raman, UV/VIS, etc. mangels Referenzdaten nicht quantitativ eingesetzt werden können. Eine Fallstudie setzte dazu an, den Hydrolyse- und Kondensationsverlauf mit geeigneter Online-NMR-Analytik zu beobachten, den Reaktionsfortschritt der Hydrolyse und Kondensation auf dieser Basis besser zu verstehen und zu optimieren. Zu diesem Zweck werden durch Zugabe von Wasser zunächst die Alkoxysubstituenten eines Trialkoxysilans hydrolysiert und entsprechende Silanole gebildet. Diese können dann über eine SiOH-Funktion an den zu modifizierenden Werkstoff anbinden und über weitere Silanolgruppen unter Ausbildung von Siloxaneinheiten vernetzen. In einer weiteren Fallstudie wurde die Kinetik der Aufspaltungen einer cyclischen Silanverbindung untersucht. Die Online-NMR-Analytik kam hierbei sowohl im Labor als auch in der industriellen Produktionsanlage zum Einsatz. Hierfür wurde eine automatisierte Einhausung verwendet, welche den Einsatz eines kommerziellen NMR-Spektrometers in explosionsgeschützten Bereichen ermöglicht. T2 - 10. ProcessNet-Jahrestagung CY - Online meeting DA - 21.09.2020 KW - NMR-Spektroskopie KW - Benchtop-NMR KW - Silane PY - 2020 AN - OPUS4-51350 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Industrial applications of low-field NMR spectroscopy for process and quality control of silanes N2 - The combination of different silanes as starting materials and as a product of hydrolysis by several alcohols or water creates a range of hundreds of technical products for a wide range of applications. In recent years, functional trialkoxysilanes have proven to be multi-purpose organosilanes. Applications range from weather protection of buildings to additives for glass fiber industry, sealants, adhesives, coatings and paints to the modification of polymers. Commercial benchtop NMR spectrometers have the potential to be used in silane chemistry as an online method for reaction monitoring and quality control. NMR nuclei of interest for silane products are 1H and 29Si. In a joint research cooperation between EVONIK and BAM, the applicability of low-field NMR spectroscopy for the chemical analysis of silanes was evaluated. It was shown how it can extend the application range where existing technologies like NIR, Raman, UV/VIS, etc. cannot be used quantitatively due to a lack of reference data. In a first case study the process of hydrolysis and condensation was observed using online NMR analysis. For this purpose, the substituents of a trialkoxysilane are first hydrolyzed by adding water and corresponding silanols are formed, which can then bind to materials via SiOH functions and crosslink to form siloxane units. Another case study was dealing with the kinetics of the cleavage of a cyclic silane compound. Online NMR analysis was used both in the laboratory and in the manufacturing plant. For this purpose, a fully automated containment system was used, which enables the use of a commercial NMR spectrometer in ATEX-environments. In the third case study presented, quantitative 1H-NMR spectra were acquired on product mixtures of a trialkoxysilane and other components such as organic stabilizers, organotin compounds, an aromatic amine and organic peroxides. An automatic evaluation method based on Indirect Hard Modeling (IHM) was developed. T2 - Practical Applications of NMR in Industry Conference (PANIC) CY - Online meeting DA - 19.10.2020 KW - Process Analytical Technology KW - NMR spectroscopy KW - Benchtop-NMR KW - Process-NMR PY - 2020 AN - OPUS4-51465 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - George, Janine T1 - Automated bonding analysis based on crystal orbital Hamilton populations N2 - We created a workflow that fully automates bonding analysis using Crystal Orbital Hamilton Populations, which are bond-weighted densities of states. This enables understanding of crystalline material properties based on chemical bonding information. To facilitate data analysis and machine-learning research, our tools include automatic plots, automated text output, and output in machine-readable format. T2 - Sommersymposium des Fördervereins Chemieolympiade CY - Online meeting DA - 25.06.2022 KW - Bonding Analysis KW - Automation KW - DFT PY - 2022 AN - OPUS4-55409 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ertural, Christina T1 - Vibe Check via Machine Learning: Testing the Prototype N2 - Vibrational properties play a key role in determining the stability and thermal conductivity behaviour of materials. The quasi- harmonic approximation gives insight into the phononic properties of a compound, but in the established way, i.e. density functional theory based methods, it takes many calculation steps and consumes a lot of resources to arrive at the desired results. Machine learning (ML) trained interatomic potentials (e.g. Gaussian approximation potential, GAP) pose an alternative to the traditional computation way of phonons. We develop a Python code based workflow which combines automation tools like atomate2 with ML to ease providing interactomic potentials for (quantum chemical) computations and databases. T2 - #RSCPoster Twitter conference 2023 CY - Online meeting DA - 28.02.2023 KW - Interatomic potentials KW - Machine learning KW - Phonons KW - Workflow PY - 2023 UR - https://twitter.com/cer5814012/status/1630547004462858240 AN - OPUS4-57059 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naik, Aakash T1 - New descriptors for materials properties based on bonding indicators N2 - Includes a summary of the Ph.D. project that deals with generating a database populated with materials bonding properties and how we intend to gain deeper insights into material properties through this research. T2 - SALSA 2022 CY - Berlin, Germany DA - 15.09.2022 KW - Bonding analysis KW - Automation KW - Materials Informatics KW - Computational Chemistry PY - 2022 AN - OPUS4-56142 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - George, Janine T1 - A Quantum-Chemical Bonding Database for Solid-State Materials N2 - A deep insight into the chemistry and nature of individual chemical bonds is essential for understanding materials. Bonding analysis is expected to provide important features for large-scale data analysis and machine learning of material properties. Such information on chemical bonds can be calculated using the LOBSTER (www.cohp.de) software package, which post-processes data from modern density functional theory computations by projecting plane wave-based wave functions onto a local atomic orbital basis. We have performed bonding analysis on 1520 compounds (insulators and semiconductors) using a fully automated workflow combining the VASP and LOBSTER software packages. We then automatically evaluated the data with LobsterPy (https://github.com/jageo/lobsterpy) and provide results as a database. The projected densities of states and bonding indicators are benchmarked on VASP projections and available heuristics, respectively. Lastly, we illustrate the predictive power of bonding descriptors by constructing a machine-learning model for phononic properties, which shows an increase in prediction accuracies by 27 % (mean absolute errors) compared to a benchmark model differing only by not relying on any quantum-chemical bonding features. T2 - Sommersymposium des Fördervereins Chemieolympiade CY - Online meeting DA - 15.04.2023 KW - Automation KW - Chemical Bonds KW - DFT KW - Quantum Chemistry PY - 2023 AN - OPUS4-57310 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naik, Aakash T1 - Building quantum chemical orbital based bonding descriptor database N2 - Motivation, methodology and and results of our quantum chemical bonding descriptors database presented in form of a Poster T2 - RSC Twitter Conference 2023 CY - Online meeting DA - 28.02.2023 KW - Bonding analysis KW - Automation KW - Materials Informatics KW - Computational Chemistry KW - Database PY - 2023 UR - https://twitter.com/NaikAak/status/1630400167080869893 UR - https://twitter.com/NaikAak/status/1630540436434558977 AN - OPUS4-57101 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naik, Aakash A1 - Ertural, Christina A1 - Dhamrait, Nidal A1 - Benner, Philipp A1 - George, Janine T1 - A Quantum-Chemical Bonding Database for Solid-State Materials N2 - Understanding the chemistry and nature of individual chemical bonds is essential for materials design. Bonding analysis via the LOBSTER software package has provided valuable insights into the properties of materials for thermoelectric and catalysis applications. Thus, the data generated from bonding analysis becomes an invaluable asset that could be utilized as features in large-scale data analysis and machine learning of material properties. However, no systematic studies exist that conducted high-throughput materials simulations to curate and validate bonding data obtained from LOBSTER. Here we present an approach to constructing such a large database consisting of quantum-chemical bonding information. T2 - 16th International conference on materials chemistry (MC16) CY - Dublin, Ireland DA - 03.07.2023 KW - Bonding analysis KW - Automation KW - Materials Informatics KW - Computational Chemistry KW - Database PY - 2023 AN - OPUS4-57889 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bustamante, Joana A1 - Naik, Aakash A1 - Ueltzen, Katharina A1 - Ertural, Christina A1 - George, Janine T1 - Thermodynamic and Thermoelectric Properties of the Canfieldite, (Ag8SnS6 ), in the Quasi-Harmonic Approximation N2 - Argyrodite-type materials have lately sparked a lot of research interest due to their thermoelectric properties. One promising candidate is canfieldite (Ag8SnS6), which has a Pna21 orthorhombic crystal structure at room temperature (RT). Recently, Slade group found a new low-temperature (LT) phase transition of canfieldite at 120K. Therefore, we investigate structural, vibrational and thermodynamic properties of Ag8SnS6 at room- and low-temperature employing density-functional theory (DFT) and lattice dynamics computations. Thermal properties calculations were based on the quasi-harmonic approximation (QHA) as implemented in phonopy. We achieve good agreement with experiments. Lattice parameters were overestimated by 2%, and thermal properties such as the constant-pressure heat capacity Cp are very close to experimental measurements. Our simulations also reveal a possible new phase transition at around 312 K. Furthermore, we compared RT and LT Ag8SnS6 Grüneisen parameters with some argyrodites analogues, Ag8TS6 (T = Si, Ge, Ti and Sn), finding a relationship between the anharmonicity and low thermal conductivity. T2 - TDEP Summer School 2023 (TDEP2023: Finite-temperature and anharmonic response properties of solids in theory and practice) CY - Linköping, Sweden DA - 20.08.2023 KW - Thermoelectric materials KW - DFT KW - QHA KW - Grüneisen parameter PY - 2023 AN - OPUS4-58147 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naik, Aakash T1 - Material property predictions by incorporating quantum chemical bonding information N2 - Interactions between constituent atoms in crystalline materials have been shown to influence the properties of materials, such as elasticity, ionic and thermal conductivity, etc.[1–3] These interactions between constituent atoms, often quantified as bond strengths, can be extracted from crystalline materials using density-based[4], energy-based[5], and orbital-based methods. LOBSTER[6] is a software that relies on the orbital-based method to extract such bonding information by projecting the plane wave-based wave functions of modern density functional theory computations (DFT) onto a local atomic orbital basis. To garner a better understanding of how this bonding information relates to material properties on a larger scale, machine learning seems an obvious choice. However, for such data-driven studies, large quantities of data that are systematically generated, validated, and post-processed (feature engineering) in a form suitable for input in state-of-the-art ML models are often needed.[7] Here, we first present a workflow implemented in atomate2[8] that can generate such bonding-related data using the LOBSTER program with minimal user input and a post-processing tool, LobsterPy[9], which can summarize and engineer features that could be directly used as input for ML studies. Lastly, we demonstrate the utility of these newly generated features by building a simple machine-learned model to predict harmonic phonon properties using the bonding dataset[10] generated by us for 1500 materials. We find a clear correlation between the bonding information and the phonon property. T2 - STC 2024 CY - Braunschweig, Germany DA - 02.09.2024 KW - Bonding analysis KW - Machine learning KW - Feature engineering PY - 2024 AN - OPUS4-61130 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ertural, Christina T1 - Phonon-accurate machine-learning potentials from automated workflows N2 - Data-driven materials design aims to predict and optimize material properties, such as stability and thermal conductivity, which are influenced by vibrational behavior. Approaches like DFT are computationally demanding and have limitations for phonon calculations. Machine learning-driven interatomic potentials (MLIP), like the Gaussian approximation potential (GAP), offer a more efficient alternative.1–8 We developed a Python workflow to automate MLIP generation using the Materials Project database.9 DFT computations, MLIP fitting and benchmark steps are automated.10,11 This approach accelerates phonon calculations and supports testing different data generation strategies and hyperparameters, and further validation12 is planned. Our goal is to provide open-source code and share these potentials. T2 - Faraday Discussions: Data-driven discovery in the chemical sciences CY - Oxford, UK DA - 10.09.2024 KW - Interatomic potentials KW - Machine learning KW - Phonons KW - Thermoelectrics PY - 2024 AN - OPUS4-61061 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Naik, Aakash T1 - Enhancing material property predictions using quantum chemical bonding descriptors N2 - The properties of crystalline materials, such as elasticity, ionic conductivity, and thermal conductivity, are influenced by interactions between their constituent atoms.[1–3] These interactions, which are often quantified in terms of bond strength, can be extracted from crystalline materials using density-based[4], energy-based[5] and orbital-based methods. LOBSTER[6] is a software that relies on the orbital-based method to extract such bonding information by projecting the plane wave-based wave functions of modern density functional theory computations (DFT) onto a local atomic orbital basis. To garner a better understanding of how this bonding information relates to material properties on a larger scale, machine learning seems an obvious choice. However, for such data-driven studies, large quantities of data need to be systematically generated, validated, and post-processed (e.g., by feature engineering), as they can only then be used as input for state-of-the-art ML models. We have, therefore, previously developed workflows for high-throughput bonding analysis[7]. In this work, we use the results[8] from high-throughput LOBSTER calculations using our workflows to generate bonding-based features. To extract such features from the LOBSTER computations, we use our package LobsterPy.[9] The importance of these features is then tested by employing them in several state-of-the-art ML algorithms and architectures to predict the mechanical and vibrational properties of crystalline materials. We show that including these bonding-based features alongside typical composition and structure-based features helps enhance the model’s predictive accuracy. T2 - 18th German Conference on Cheminformatics CY - Bad Soden am Taunus, Germany DA - 03.11.2024 KW - Bonding analysis KW - Machine learning KW - Materials Descriptors PY - 2024 AN - OPUS4-62217 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ueltzen, Katharina T1 - Unveiling the potential of the Kanamori-Goodenough-Anderson rules for magnetic property prediction N2 - Recently, machine learning of magnetic properties of transition metal compounds has attracted large interest due to environmental and availability issues of rare-earth-based functional magnetic materials. Surprisingly, bond-angle-derived features were not found to be relevant for magnetic structure prediction in previous studies using DFT-computed labels. This contrasts with a well-known magnetism heuristic, the Kanamori-Goodenough-Anderson (KGA) rules of superexchange. We review magnetic interaction trends within the MAGNDATA database of experimentally determined magnetic structures. Observed trends follow the KGA rules „of thumb“ and exceptions can be rationalized. We introduce a new, informative label for predicting magnetic structures that can be extended to magnetic sites and structures of arbitrary complexity. Bond-angle-derived features are found to be highly relevant for magnetic structure prediction. T2 - Faraday Discussion: Data-driven discovery in the chemical sciences CY - Oxford, UK DA - 10.09.2024 KW - Magnetism KW - High-throughput analysis KW - Machine learning KW - Transition metal compounds PY - 2024 AN - OPUS4-62250 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ueltzen, Katharina T1 - Revisiting the Kanamori-Goodenough-Anderson rules for magnetic property prediction N2 - Recently, machine learning of magnetic properties of transition metal compounds has attracted large interest due to environmental and availability issues of rare-earth-based functional magnetic materials. Surprisingly, bond-angle-derived features were not found to be relevant for magnetic structure prediction in previous studies using DFT-computed labels. This contrasts with a well-known magnetism heuristic, the Kanamori-Goodenough-Anderson (KGA) rules of superexchange. We review magnetic interaction trends within the MAGNDATA database of experimentally determined magnetic structures. Observed trends follow the KGA rules „of thumb“ and exceptions can be rationalized. We introduce a new, informative label for predicting magnetic structures that can be extended to magnetic sites and structures of arbitrary complexity. Bond-angle-derived features are found to be highly relevant for magnetic structure prediction. T2 - 60th Symposium on Theoretical Chemistry (STC 2024) CY - Braunschweig, Germany DA - 02.09.2024 KW - Magnetism KW - High-throughput analysis KW - Machine learning KW - Transition metal compounds PY - 2024 AN - OPUS4-62249 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Benner, Philipp A1 - Grandel, Jonas T1 - A shortcut towards phonon predictions N2 - Phonon calculations with ab-initio methods are computationally expensive. The use of universal machine learning models reduces the cost, but raises concerns about prediction quality. Fine-tuning with only a few structures, improves predictions of phonons, thermal properties and especially diffusive thermal conductivity, while reducing computational cost by a factor of 10 in average compared to DFT methods. T2 - DPG Frühjahrstagung CY - Regensburg, Germany DA - 16.03.2025 KW - Machine Learning KW - MACE KW - Phonons PY - 2025 AN - OPUS4-62770 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Eckert, Katrin A1 - Eiben, Mario A1 - Damm, David T1 - Informationssystem Datenbank GEFAHRGUT N2 - Präsentation der Möglichkeiten der Recherche in der Datenbank GEFAHRGUT T2 - Behörden-Erfahrungsaustausch CY - Berlin, Germany DA - 23.05.2016 KW - Gefahrgut KW - Datenbank GEFAHRGUT PY - 2016 AN - OPUS4-36215 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiben, Mario T1 - Die Aufgaben der BAM als zuständige Behörde im Gefahrgutbereich in Deutschland N2 - Die BAM ist zuständige Behörde in Deutschland für bestimmte Aufgaben im Gefahrgutbereich, die u. a. in § 8 der Gefahrgutverordnung Straße, Eisenbahn und Binnenschifffahrt (GGVSEB) und § 12 der Gefahrgutverordnung See (GGVSee) aufgeführt sind und hauptsächlich von den Abteilungen 2 und 3 wahrgenommen werden. So ist die BAM bspw. die in Deutschland für die Zulassung von Verpackungen und Tanks oder auch die Einstufung bestimmter gefährlicher Güter zuständige Stelle. Die BAM arbeitet des Weiteren als Kompetenzbehörde national und international in den entsprechenden Gremien mit und berät das BMDV in der Rechtsfortentwicklung der internationalen Vorschriften für den Gefahrguttransport. Dies geschieht u. a. durch die Mitarbeit im Ständigen Ausschuss Gefahrgutbeförderung (AGGB) des Gefahrgut-Verkehrs-Beirats beim BMDV und den zugehörigen Arbeitsgruppen, oder auch das Erstellen von Anträgen für Rechtsänderungen in den internationalen Vorschriften der Vereinten Nationen (UN) bzw. der Wirtschaftskommission für Europa der UN (UNECE) im Auftrag des BMDV. Die Beratung der betroffenen Wirtschaft und die Normungsarbeit sind weitere wichtige Themen. Die Expertise der BAM wird insbesondere durch Forschung im Gefahrgutbereich erhalten und weiter ausgebaut. Im Rahmen des Vortrags werden drei Forschungsbereiche vorgestellt, von denen zwei für die Energiewende von großer Bedeutung sind. T2 - 10. Deutsche Gefahrgut-Sicherheitstage CY - Nürburg, Germany DA - 13.09.2023 KW - Gefahrgut KW - Zuständige Behörde KW - Transport gefährlicher Güter KW - Gremienarbeit KW - Normung KW - Forschung KW - Gesetzliche Aufgaben PY - 2023 AN - OPUS4-58350 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Farahbakhsh, Mahin A1 - Simon, Katja A1 - Eiben, Mario A1 - Damm, David A1 - Tscheuschner, Frank A1 - Stahl, Michael T1 - Fachinformationssystem Datenbank GEFAHRGUT N2 - Es werden die Anwendungen des Gefahrgutdatenpools der BAM aufgezeigt, der ein zentrales Informationssystem für den Transport gefährlicher Güter darstellt. T2 - 19. Gefahrgut-Technik-Tage Berlin CY - Berlin, Germany DA - 16.11.2023 KW - BAM-Liste KW - Datenbank GEFAHRGUT KW - Gefahrgut-Schnellinfo KW - Gefahrgutdatenpool KW - Gefahrguttransport KW - Informationssystem KW - Kurzinfo KW - Modul für Beförderungspapier KW - Modul für radioaktive Stoffe KW - BAM List KW - Dangerous Goods Database KW - Dangerous Goods Quickinfo KW - Radioactive Materials Module KW - Transport Documents Module PY - 2023 AN - OPUS4-59106 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiben, Mario A1 - Stahl, Michael T1 - Fachinformationssystem Datenbank GEFAHRGUT N2 - Es werden die Anwendungen des Gefahrgutdatenpools der BAM aufgezeigt, der ein zentrales Informationssystem für den Transport gefährlicher Güter darstellt. T2 - Münchner Gefahrguttage 2023 CY - Munich, Germany DA - 15.05.2023 KW - BAM-Liste KW - Datenbank GEFAHRGUT KW - Gefahrgut-Schnellinfo KW - Gefahrgutdatenpool KW - Gefahrguttransport KW - Informationssystem KW - Kurzinfo KW - Modul für Beförderungspapiere KW - Modul für radioaktive Stoffe KW - BAM List KW - Dangerous Goods Database KW - Dangerous Goods Quickinfo KW - Radioactive Materials Module KW - Transport Documents Module PY - 2023 AN - OPUS4-57530 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiben, Mario A1 - Stahl, Michael T1 - Fachinformationssystem Datenbank GEFAHRGUT - Hilfe bei der Kennzeichnung der Umweltgefahr N2 - Möglichkeiten der Datenbank GEFAHRGUT und des Gefahrgutdatenservices die Notwendigkeit der Kennzeichnung der Umweltgefahr zu ermitteln T2 - Münchner Gefahrguttage 2023 CY - Munich, Germany DA - 15.05.2023 KW - Datenbank KW - Fachinformationssystem KW - Gefahrgut KW - Kennzeichnung KW - Umweltgefahr KW - Dangerous goods KW - Database KW - Environmentally hazardous substance KW - Labelling KW - Specialised information system PY - 2023 AN - OPUS4-57531 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Farahbakhsh, Mahin A1 - Eiben, Mario T1 - Fachinformationssystem Datenbank GEFAHRGUT - Modul für Beförderungspapiere N2 - Die Vorteile bei der Erstellung von Beförderungspapieren mit dem Modul der Datenbank GEFAHRGUT werden dargestellt. Dazu zählen u.a. die einfache Erstellung eines Beförderungspapieres für Stückgut im Straßenverkehr durch Nutzung eines Schritt-für-Schritt-Assistenten, bei dem z. B. grundsätzliche Verbote der Zusammenladung und -packung geprüft werden. Bei der Auswahl der Verpackung werden bei Einzelverpackungen und IBCs nur Verpackungen/IBCs angeboten, die für den jeweiligen Stoff zulässig sind. T2 - Internationale Gefahrgut-Tage Hamburg CY - Hamburg, Germany DA - 17.02.2020 KW - Datenbank GEFAHRGUT KW - Gefahrgut KW - Modul für Beförderungspapiere KW - Gefahrguttransport KW - Dangerous Goods Database KW - Dangerous Goods KW - Transport Documents Modul KW - Dangerous Goods transport PY - 2020 AN - OPUS4-50442 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Farahbakhsh, Mahin A1 - Simon, Katja A1 - Eiben, Mario A1 - Damm, David A1 - Tscheuschner, Frank A1 - Stahl, Michael T1 - Fachinformationssystem Datenbank GEFAHRGUT - Hilfe bei der Kennzeichnung der Umweltgefahr N2 - Möglichkeiten der Datenbank GEFAHRGUT und des Gefahrgutdatenservices die Notwendigkeit der Kennzeichnung der Umweltgefahr zu ermitteln. T2 - 19. Gefahrgut-Technik-Tage Berlin CY - Berlin, Germany DA - 16.11.2023 KW - Datenbank KW - Fachinformationssystem KW - Gefahrgut KW - Kennzeichnung KW - Umweltgefahr KW - Dangerous goods KW - Database KW - Environmentally hazardous substance KW - Labelling KW - Specialised information system PY - 2023 AN - OPUS4-59107 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Eiben, Mario T1 - Fachinformationssystem Datenbank GEFAHRGUT - Jetzt auch Hilfe bei der Kennzeichnung der Umweltgefahr N2 - Um Gefahrgutumschließungen richtig kennzeichnen zu können ist es erforderlich zu wissen, ob ein Stoff umweltgefährdende Eigenschaften hat. Als Informationsquelle hierfür kann sowohl die Rechercheanwendung der Datenbank GEFAHRGUT als auch die Daten des Gefahrgutdatenservices im BAM-Nummern-System als auch im UN-Nummern-Systems verwendet werden. T2 - 34. Internationale Gefahrgut-Tage Hamburg CY - Hamburg, Germany DA - 26.02.2018 KW - Datenbank KW - Gefahrgut KW - Fachinformationssystem KW - Kennzeichnung KW - Umweltgefahr KW - Umweltgefährdend KW - Transport of Dangerous Goods KW - Dangerous Goods KW - Specialised Information System KW - Database KW - Environmentally Hazardous PY - 2018 AN - OPUS4-44331 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Eiben, Mario T1 - Fachinformationssytem Datenbank GEFAHRGUT - Recherche für nicht-radioaktive Stoffe N2 - Präsentation der Möglichkeiten und Themen der Recherche in der Datenbank GEFAHRGUT T2 - 34. Internationale Gefahrgut-Tage Hamburg CY - Hamburg, Germany DA - 26.02.2018 KW - Datenbank KW - Gefahrgut KW - Fachinformationssystem KW - Recherche KW - Database KW - Dangerous Goods KW - Specialised Information System PY - 2018 AN - OPUS4-44332 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiben, Mario T1 - Informationssystem Datenbank GEFAHRGUT N2 - Möglichkeiten der Recherche in der Datenbank GEFAHRGUT T2 - 27. Münchner Gefahrgut-Tage CY - Munich, Germany DA - 22.05.2017 KW - Gefahrgut KW - Datenbank KW - Fachinformationssystem KW - Dangerous goods KW - Database KW - Specialised information system PY - 2016 AN - OPUS4-41988 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Eiben, Mario A1 - Simon, Katja A1 - Tscheuschner, Frank T1 - Fachinformationssystem Datenbank GEFAHRGUT - Jetzt auch Hilfe bei der Kennzeichnung der Umweltgefahr N2 - Möglichkeiten der Datenbank GEFAHRGUT und des Gefahrgutdatenservices die Notwendigkeit der Kennzeichnung der Umweltgefahr zu ermitteln T2 - Behörden-Erfahrungsaustausch CY - BAM, Berlin, Germany DA - 04.06.2018 KW - Datenbank KW - Fachinformationssystem KW - Gefahrgut KW - Kennzeichnung KW - Umweltgefahr KW - Dangerous goods KW - Database KW - Environmentally hazardous substance KW - Labelling KW - Specialised information system PY - 2018 AN - OPUS4-45144 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Eiben, Mario A1 - Simon, Katja A1 - Tscheuschner, Frank T1 - Fachinformationssytem Datenbank GEFAHRGUT - Recherche für nicht-radioaktive Stoffe N2 - Präsentation der Möglichkeiten der Recherche in der Datenbank GEFAHRGUT T2 - Behörden-Erfahrungsaustausch CY - BAM, Berlin, Germany DA - 04.06.2018 KW - Datenbank KW - Gefahrgut KW - Fachinformationssystem KW - Dangerous goods KW - Database KW - Transport of dangerous goods KW - Specialised Information System KW - Gefahrguttransport PY - 2018 AN - OPUS4-45146 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Tscheuschner, Frank A1 - Eiben, Mario T1 - Fachinformationssystem Datenbank GEFAHRGUT - Jetzt auch Hilfe bei der Kennzeichnung der Umweltgefahr N2 - Um Gefahrgutumschließungen richtig kennzeichnen zu können ist es erforderlich zu wissen, ob ein Stoff umweltgefährdende Eigenschaften hat. Als Informationsquelle hierfür kann sowohl die Rechercheanwendung der Datenbank GEFAHRGUT als auch die Daten des Gefahrgutdatenservices im BAM-Nummern-System als auch im UN-Nummern-Systems verwendet werden. T2 - ERFA Verpackungen CY - Berlin, Germany DA - 27.09.2018 KW - Datenbank KW - Fachinformationssystem KW - Gefahrgut KW - Kennzeichnung KW - Umweltgefahr KW - Umweltgefährdend KW - Environmentally Hazardous KW - Dangerous Goods KW - Database KW - Specialised Information System KW - Transport of Dangerous Goods PY - 2018 AN - OPUS4-46195 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Tscheuschner, Frank A1 - Eiben, Mario T1 - Fachinformationssytem Datenbank GEFAHRGUT - Recherche für nicht-radioaktive Stoffe N2 - Präsentation der Möglichkeiten und Themen der Recherche in der Datenbank GEFAHRGUT T2 - ERFA Verpackungen CY - Berlin, Germany DA - 27.09.2018 KW - Datenbank KW - Fachinformationssystem KW - Gefahrgut KW - Recherche KW - Specialised Information System KW - Dangerous Goods KW - Database PY - 2018 AN - OPUS4-46196 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lieske, Manfred T1 - Aceton Selbstlauf, Life-Präsentation der Datenbank GEFAHRGUT T2 - 9. Informationsveranstaltung zum Transport gefährlischer Güter / IAA-Nutzfahrzeuge CY - Hanover, Germany DA - 2004-09-30 PY - 2004 AN - OPUS4-4834 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael T1 - Posterpräsentation zur Vorstellung der Datenbank GEFAHRGUT T2 - Gefahrgut-Technik-Tage Berlin, BAM, Zweiggelände Fabeckstraße CY - Berlin, Germany DA - 2004-11-25 PY - 2004 AN - OPUS4-6871 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lieske, Manfred T1 - Posterpräsentation zur Vorstellung der Datenbank GEFAHRGUT T2 - Workshop "Gefahrgut - Erhöhung derBeförderungssicherheit und die Sicherung gegen missbräuchliche Verwendung durch technische und logistische Maßnahmen" veranstaltet vom Bundesministerium für Verkehr, Bau- und Wohnungswesen während der Messe "transport logistic" CY - Munich, Germany DA - 2005-06-03 PY - 2005 AN - OPUS4-7529 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lieske, Manfred T1 - Posterpräsentation zur Vorstellung der Datenbank GEFAHRGUT T2 - 21. Internationale Gefahrgut-Tage Hamburg CY - Hamburg, Germany DA - 2005-02-20 PY - 2005 AN - OPUS4-7533 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lieske, Manfred T1 - Posterpräsentation zur Vorstellung der Datenbank GEFAHRGUT T2 - 15. Münchner Gefahrgut-Tage CY - Munich, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-7532 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lieske, Manfred T1 - Vorstellung der Datenbank GEFAHRGUT T2 - Messe "transport logistic" CY - Munich, Germany DA - 2005-05-31 PY - 2005 AN - OPUS4-7531 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael T1 - Posterpräsentation zur Vorstellung der Datenbank GEFAHRGUT T2 - Gefahrgut-Technik-Tage Berlin, BAM CY - Berlin, Germany DA - 2005-11-10 PY - 2005 AN - OPUS4-11532 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lieske, Manfred T1 - Vorstellung der Datenbank GEFAHRGUT T2 - 16. Münchner Gefahrgut-Tage CY - Munich, Germany DA - 2006-05-22 PY - 2006 AN - OPUS4-12412 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael T1 - Informationssystem Datenbank GEFHARGUT - Datenbank GEFAHRGUT jetzt in JAVA T2 - Behörden-Erfahrungsaustausch, BAM CY - Berlin, Germany DA - 2009-04-27 PY - 2009 AN - OPUS4-19348 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Farahbakhsh, Mahin T1 - Informationssystem der Datenbank GEFAHRGUT - Datenbank GEFAHRGUT jetzt in JAVA T2 - 19. Münchner Gefahrgut-Tage CY - Munich, Germany DA - 2009-05-18 PY - 2009 AN - OPUS4-19263 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Farahbakhsh, Mahin T1 - Informationssystem Datenbank GEFAHRGUT T2 - 10. Stuttgarter Gefahrguttag der IHK Stuttgart CY - Stuttgart, Germany DA - 2008-10-14 PY - 2008 AN - OPUS4-18068 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Farahbakhsh, Mahin T1 - Informationssystem Datenbank GEFAHRGUT T2 - 62. IAA Nutzfahrzeuge CY - Hanover, Germany DA - 2008-09-26 PY - 2008 AN - OPUS4-17846 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Comparison of the environmental stress cracking behaviour of polyethylene and polyethylene terephthalate as materials for dangerous goods packagings N2 - The chemical industry has expressed great interest in using polyethylene terephthalate (PET) as material for packagings for the transport of dangerous goods. Due to the high strength and stiffness of PET, the wall thickness and weight of packagings can be reduced. This is a relevant cost factor. PET is a semi-crystalline thermoplast which is produced by polycondensation of terephthalic acid and ethylene glycol. According to the European dangerous goods regulations RID and ADR, samples of PET design types of packagings for dangerous goods must be pre-stored with the original filling good for six months at 23°C, before the design type tests can be carried out. For packagings made of polyethylene (PE) tests to prove the stress cracking resistance by using laboratory methods are possible to reduce time and costs. Therefore, standard liquids, simulating the different types of damaging effects on PE are defined in RID and ADR. However, there is no information and research available about the damaging mechanisms on PET in comparison to PE, especially regarding to stress cracking resistance and test methods. The aim of this work is to compare the stress cracking resistance of PE and PET with the Full Notch Creep Test (FNCT), which was developed by chemical industry and is described in the standards EN ISO 16101 and EN 15507. It was investigated whether testing specimens made of PE and PET with a full coplanar notch around the middle of the specimens show weakening after the impact of a tensile force in a wetting solution (Lutensol® FSA 10) at 50°C in a test device on the basis of the FNCT. The test results confirmed the suitability of the method for eight PE grades. Unfortunately, this method couldn’t be used for PET because the specimens broke during notching. In addition the molding of the sheets and the following temper process for twelve hours are very time-consuming, and the specimens broke during notching due to the high brittleness of PET. Another possibility to provide evidence of stress cracking resistance of PE packagings is laid down in BAM’s Dangerous Goods Rule BAM-GGR 015. This test was carried out with PE and PET bottles to compare both materials. Therefore 1l test bottles were filled with a 5% wetting solution and mounted with a clamping tool for 28 days at 40°C. Tensile test specimens were cut out afterwards from the middle of the bottles in the deformed areas. Tensile strength and breaking elongation of PE specimens were determined in comparison to the PET specimens. The tensile properties of the PET specimens couldn’t be determined due to the strength and the stiffness of the material. In conclusion the only way to provide information about the stress cracking resistance of PET was to perform stacking tests. 1l bottles made of PE and PET were filled with a 5% wetting solution and stored with a stacking load for 28 days at 40°C according to EN ISO 16495. Design types of PE and PET both passed the stacking tests. T2 - EUROCORR 2016 CY - Montpellier, France DA - 11.09.2016 KW - polyethylene terephthalate KW - stress cracking resistance KW - test methods KW - dangerous goods packagings PY - 2016 AN - OPUS4-37448 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiben, Mario T1 - Datenbank GEFAHRGUT - Ein gemeinsames Projekt vom BMVI und der BAM N2 - Poster mit den Anwendungen des Gefahrgutdatenpools der BAM T2 - Tag der offenen Tür der Bundesregierung CY - Berlin, Germany DA - 27.08.2016 KW - Gefahrgut KW - Transport KW - Dangerous goods KW - Transportation PY - 2016 AN - OPUS4-37506 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiben, Mario A1 - Nispel, Katja A1 - Tscheuschner, Frank T1 - Datenbank GEFAHRGUT - Ein gemeinsames Projekt vom BMVI und der BAM N2 - Poster mit den Anwendungen des Gefahrgutdatenpools der BAM T2 - IAA-Symposium „Gefahrguttag“ mit begleitender Fahrzeugausstellung; Aktuelle Entwicklungen im Gefahrgutrecht und Erhöhung der Sicherheit von Gefahrgutfahrzeugen CY - Hannover, Germany DA - 27.09.2016 KW - Gefahrgut KW - Transport KW - Dangerous goods KW - Transportation KW - Datenbank GEFAHRGUT PY - 2016 AN - OPUS4-37657 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Eiben, Mario A1 - Nispel, Katja A1 - Tscheuschner, Frank A1 - Damm, David T1 - Datenbank GEFAHRGUT - Ein gemeinsames Projekt vom BMVI und der BAM N2 - Poster mit den Anwendungen des Gefahrgutdatenpools der BAM T2 - ERFA Verpackungen CY - Berlin, Germany DA - 20.09.2016 KW - Gefahrgut KW - Transport KW - Dangerous goods KW - Transportation KW - Datenbank GEFAHRGUT PY - 2016 AN - OPUS4-37656 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Eiben, Mario A1 - Nispel, Katja A1 - Tscheuschner, Frank A1 - Damm, David T1 - Informationssystem Datenbank GEFAHRGUT - Modul für radioaktive Stoffe N2 - Vorstellung des neuen Moduls für radioaktive Stoffe der Datenbank GEFAHRGUT T2 - ERFA Verpackungen CY - Berlin, Germany DA - 20.09.2016 KW - Datenbank GEFAHRGUT KW - Informationssystem KW - Modul für radioaktive Stoffe PY - 2015 AN - OPUS4-37654 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weltschev, Margit T1 - Suitable test method for the determination of the environmental stress cracking behaviour of polyethylene terephthalate as material for dangerous goods packagings N2 - The chemical industry has expressed great interest in using polyethylene terephthalate (PET) as material for packagings for the transport of dangerous goods. Due to the high strength and stiffness of PET, the wall thickness and weight of packagings can be reduced. The aim of this work was to find a laboratory test method for the determination of the stress cracking resistance of PET. One test method is the Full Notch Creep Test (FNCT), which was developed for polyethylene (PE) and is described in the standards EN ISO 13274 and EN 15507. It was investigated whether testing specimens made of PET with a full coplanar notch around the middle of the specimens show weakening after the impact of a tensile force in a wetting solution at 50°C. Unfortunately, this method couldn’t be used for PET because the specimens broke during notching due to the high brittleness of PET. The molding of the sheets and the following temper process for twelve hours are very time-consuming, Another possibility is laid down in BAM’s Dangerous Goods Rule BAM-GGR 015. This test was carried out with 1l PET bottles, which were filled with a 5% wetting solution and mounted with a clamping tool for 28 days at 40°C. Tensile test specimens were cut out afterwards from the middle of the bottles in the deformed areas. The tensile properties of the PET specimens couldn’t be determined due to the hardness of the material. In conclusion, the only way to provide information about the stress cracking resistance of PET was to perform stacking tests with PET design types of packagings. 1l bottles made of PET were filled with a 5% wetting solution and stored with a stacking load for 28 days at 40°C according to EN ISO 16495. The test bottles of PET passed the stacking tests. T2 - Fifth International Symposium Frontiers in Polymer Science CY - Seville, Spain DA - 17.05.2017 KW - Polyethylene terephthalate KW - Stress cracking resistance KW - Laboratory method KW - Dangerous goods packaging PY - 2017 AN - OPUS4-40438 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiben, Mario A1 - Damm, David A1 - Tscheuschner, Frank T1 - Datenbank GEFAHRGUT - Ein gemeinsames Projekt vom BMVI und der BAM N2 - Poster mit den Anwendungen des Gefahrgutdatenpools der BAM T2 - Behörden-Erfahrungsaustausch CY - Berlin, Germany DA - 08.05.2017 KW - Gefahrgut KW - Datenbank KW - Fachinformationssystem KW - Dangerous goods KW - Database KW - Specialised information system PY - 2016 AN - OPUS4-41987 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiben, Mario T1 - Datenbank GEFAHRGUT - Ein gemeinsames Projekt vom BMVI und der BAM N2 - Poster mit den Anwendungen des Gefahrgutdatenpools der BAM T2 - 27. Münchner Gefahrgut-Tage CY - Munich, Germany DA - 22.05.2017 KW - Gefahrgut KW - Datenbank KW - Fachinformationssystem KW - Dangerous goods KW - Database KW - Specialised information system PY - 2016 AN - OPUS4-41984 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stahl, Michael A1 - Eiben, Mario A1 - Nispel, Katja A1 - Damm, David A1 - Tscheuschner, Frank T1 - Informationssystem Datenbank GEFAHRGUT N2 - Möglichkeiten der Recherche in der Datenbank GEFAHRGUT T2 - 16. Gefahrgut-Technik-Tage Berlin CY - Berlin, Germany DA - 09.11.2017 KW - Datenbank KW - Gefahrgut KW - Informationssystem KW - Transport KW - Database KW - Dangerous goods KW - Transport PY - 2016 AN - OPUS4-42838 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiben, Mario A1 - Damm, David A1 - Tscheuschner, Frank T1 - Informationssystem Datenbank GEFAHRGUT N2 - Möglichkeiten der Recherche in der Datenbank GEFAHRGUT T2 - Behörden-Erfahrungsaustausch CY - Berlin, Germany DA - 08.05.2017 KW - Gefahrgut KW - Datenbank KW - Fachinformationssystem KW - Dangerous goods KW - Database KW - Specialised information system PY - 2016 AN - OPUS4-41989 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - Outdoor Gas Plume Reconstructions: A Field Study with Aerial Tomography N2 - This paper outlines significant advancements in our previously developed aerial gas tomography system, now optimized to reconstruct 2D tomographic slices of gas plumes with enhanced precision in outdoor environments. The core of our system is an aerial robot equipped with a custom-built 3-axis aerial gimbal, a Tunable Diode Laser Absorption Spectroscopy (TDLAS) sensor for CH4 measurements, a laser rangefinder, and a wide-angle camera, combined with a state-of-the-art gas tomography algorithm. In real-world experiments, we sent the aerial robot along gate-shaped flight patterns over a semi-controlled environment with a static-like gas plume, providing a welldefined ground truth for system evaluation. The reconstructed cross-sectional 2D images closely matched the known ground truth concentration, confirming the system’s high accuracy and reliability. The demonstrated system’s capabilities open doors for potential applications in environmental monitoring and industrial safety, though further testing is planned to ascertain the system’s operational boundaries fully. T2 - 20th International Symposium on Olfaction and Electronic Nose CY - Grapevine, Texas, USA DA - 12.05.2024 KW - Aerial Robot KW - TDLAS KW - Gas Tomography KW - Plume PY - 2024 AN - OPUS4-60108 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sanchez-Olivares, G. T1 - Fire Behaviour and Viscoelasticity of Sustainable Thermoplastic Polyurethane Multicomponent Systems N2 - Main message: An interesting influence of viscoelastic properties on fire behavior of multicomponent systems based on thermoplastic polyurethane using industrial-waste leather fibers was observed. A detailed investigation on rheological properties, morphology, pyrolysis, flammability and forced flaming combustion highlighted that fire retardancy is best achieved when the multicomponent systems exhibit a predominant elastic behavior. Introduction: Multicomponent systems represent a sustainable alternative to traditional high-loaded flame retardant polymer materials, particularly in local areas where industrial-waste fibers are a problem.The final properties of those systems greatly depend on the melt blending process [1-2]. In this work,thermoplastic polyurethane multicomponent systems using industrial-waste leather fibers and a commercial flame-retardant additive were produced and investigated. Results and Discussion: According to rheological measurements, the viscoelastic behavior of the TPU multicomponent systems depends on the melt blending process conditions. Systems produced under low blending temperature profile and high rotational speed (TPU/5LF/5APP_T1/V3) display a predominant viscous behavior, meanwhile TPU/5LF/5APP_T1/V1 and TPU/5LF/5APP_T2/V2 samples, exhibit a more elastic one. The combination of LF and APP at low loadings (5 phr each) results in an important reduction on the peak of heat release rate (pHRR), total heat evolved (THE) and total smoke production (TSP) regarding to pure TPU. The UL94 vertical test pointed out that multicomponent systems with predominant elastic behavior (TPU/5LF/5APP_T1/V1 and TPU/5LF/5APP_T2/V2 samples) reached the V-0 rating, meanwhile for the system with the most viscous tendency (TPU/5LF/5APP_T1/V3), non-rating is obtained. Acknowledgement: Part of this work was funded by the Consejo Nacional de Humanidades Ciencias y Tecnologías (CONAHCYT), Mexico, grant number CF-2023-I-865. T2 - 20th European Meeting on Fire Retardant Polymeric Materials (FRPM2025) CY - Madrid, Spain DA - 03.06.2025 KW - TPU KW - Fire behavior KW - Viscoelastic properties KW - Leather fibers KW - Industrial wastes PY - 2025 AN - OPUS4-63400 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dudziak, Mateusz T1 - Synergistic effect of commercial and natural flame retardants in polylactide biocomposites N2 - Main message: We propose a combination of natural biomass from algae species Desmodesmus sp.along with commercially available flame retardant Melapur200 (melamine polyphosphate) in different mass ratios. We have successfully demonstrated that the use of both of them in PLA matrix biocomposites shows a synergistic flame retardant effect. Introduction: Poly(lactic acid) (PLA), a biodegradable polymer produced from renewable resources such as corn starch and sugarcane, is increasingly being used as a substitute for traditional petrochemical-based polymers in various commercial applications. However, its flammability characteristics need improvement to enable its use as a technical polymer. Based on previous successful experiments on PLA biocomposites with phosphor-enriched algae as filler [1], it was even mandatory to continue with enhancement of PLA flame retardancy. Therefore, tests for PLA biocomposites with P-algae containing melamine polyphosphate at different mass ratios were performed. Pyrolysis, reaction to small fire and fire behavior tests were carried out. Results and Discussion: Thermal stability analyses showed that all composites decompose earlier at lower temperature than pure PLA to a small extent. The evolved gases analysis revealed the release of ammonia and phosphates for the composites tested. PCFC analysis showed the greatest decrease in pHRR for the sample containing Melapur200/Algae (Figure 1A). Similarly, in the fire behaviour analysis, the best result was obtained for the sample containing a mixture of Melapur200 and Algae (Figure 1B). Satisfying results were obtained in the tests of reaction to small flame, where all the samples passed the classification from V-2 to V-0 (in the UL 94 test) and the oxygen index for the best sample was 27.4 +- 0.2%. When only Melapur200 or algae are added separately, a slight flame retardant effect is visible, however if both materials are added in suitable mixtures to the polymer, a synergistic effect is observable. In some cases, it can even be observed that the synergistic effect has surpassed expectations from the superposition. In conclusion, the combination of Melapur200 together with microalgae gives satisfying flame retardant effects for PLA biocomposites. Acknowledgement: The authors thank Dr. Georgios Mourgas (Tecnaro GmbH), and Dr. Michael Schweizer (Tecnaro GmbH) for their contributions to conceptualizing the project, raising the grant, and supporting this work. Thanks to Dr. Robert Gleuwitz (formerly of the BAM), Dr. Claudia Thomsen (iSeaMC GmbH) and Prof. Dr. Laurenz Thomsen (formerly of Jacobs University Bremen, now University of Gothenburg), Thanks to the financial support of the Bundesministerium für Bildung und Forschung – BMBF: KMU-innovativ: Biooekonomie 031B1289B T2 - 20th European Meeting on Fire Retardant Polymeric Materials (FRPM2025) CY - Madrid, Spain DA - 03.06.2025 KW - Polylactide KW - Melamine polyphosphate KW - Microalgae KW - Synergism PY - 2025 AN - OPUS4-63399 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chacon Castro, Jose P. T1 - Flame retardant poly(limonene carbonate): material innovation as a game changer N2 - The global plastic industry relies on fossil-based materials, presenting significant environmental challenges. Poly(limonene carbonate) (PLimC), a sustainable alternative, is made from two renewable monomers: limonene oxide, derived from non-food sources, and CO₂, positioning it as a promising material for applications requiring flame retardants (FRs) to meet fire safety standards. Thermal properties were initially assessed to better understand the thermal stability and fire behavior of PLimC. This analysis builds on PLimC's unique structural characteristics: its carbonate group resembling polycarbonate (PC) and its aliphatic limonene-derived segment resembling polyolefins (PO). The initial results revealed similarities to both PO and PC, prompting the evaluation of various commercially available flame retardants (FRs) at standard market concentrations. Four halogen-free FR systems were chosen for evaluation, with the conclusion that ATH proved to be the most effective FR, decreasing the heat release rate and the total heat evolved. With these results, we understood that the FRs commonly used with polyolefins (at concentrations standard in the industry) exhibit similar behavior in terms of flammability and flame retardancy when applied to PLimC. While ATH has proven to be an effective FR for PLimC, we aim to investigate bio-based alternatives to further improve the material's sustainability. Phytic acid salts and lignin have shown excellent FR performance in PO, and we believe these compounds could achieve similar success in our system. Their integration could bring us closer to achieving a fully sustainable material that aligns with current environmental goals. T2 - EPF European Polymer Congress 2025 CY - Groningen, Netherlands DA - 22.06.2025 KW - Poly(limonene carbonate) KW - Sustainability KW - Flame retardancy KW - CO2 as monomer KW - Fire Behavior PY - 2025 AN - OPUS4-63668 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehmusto, Juho T1 - Initial oxidation of the refractory high-entropy superalloy AlMo0.5NbTa0.5TiZr N2 - In contrast to traditional alloys, which are typically based on a single dominant element, high-entropy alloys (HEAs) consist of five or more principal elements in roughly equal proportions. These complex alloys often exhibit superior characteristics compared to conventional alloys, including enhanced strength and hardness, exceptional wear resistance, high structural stability, and strong resistance to oxidation. Despite these promising characteristics, the vast compositional space of HEAs means that only a limited number have been thoroughly investigated for their mechanical and chemical behavior. One notable example is the refractory high-entropy superalloy AlMo0.5NbTa0.5TiZr, which represents a newly emerging class of materials. This alloy features a nanoscale microstructure composed of B2 and bcc phases, resulting in compressive strength at elevated temperatures that surpasses that of conventional Ni-based superalloys. Such performance offers potential benefits for improving turbine efficiency in aerospace and energy generation applications. However, the alloy’s microstructure is known to be sensitive to annealing. Specifically, its mechanical properties deteriorate when intragranular hexagonal Al-Zr-based intermetallic compounds form, likely due to issues with phase stability. On the other hand, the inclusion of Al has been shown to enhance oxidation resistance. Nevertheless, HEAs are also known to develop pronounced internal aging zones caused by diffusion during oxidation processes. These findings indicate a need for further investigation into the thermodynamic stability of this alloy. In addition, its oxidation behavior—both at the surface and within the material—remains incompletely understood. This ongoing research explores the oxidation behavior of the AlMo0.5NbTa0.5TiZr alloy at temperatures ranging from 800 °C to 1000 °C. The influence of water vapor on the oxidation process is also examined. Ultimately, the goal is to integrate insights into the alloy’s structural, mechanical, and chemical characteristics at high temperatures. T2 - Gordon Research Conference - High Temperature Corrosion CY - New London, United States DA - 16.07.2023 KW - High-Entropy superalloy KW - Phase stability KW - Microstructural evolution KW - Oxidation behavior KW - High-Temperature Performance PY - 2023 AN - OPUS4-63851 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gleim, Tobias A1 - Affagard, Jean-Sebastien T1 - Towards a simplifiedmodel of the delayed impact: numerical and experimental outlook N2 - The IAEA Regulations for the Safe Transport of Radioactive Material No. SSR-6 require drop tests for demonstrating the ability of a package to withstand accident conditions of transport. In case a gap exists between the contents and the lid, it can result in a delayed impact of the content onto the lid system during a vertical drop test. The kinematic energy transmitted to the lid in such cases can be significant due to the stiffness of the impact, leading to high stresses in the bolts compared to a configuration without a gap. In the past, IRSN and BAM have individually investigated the modelling of the delayed impact phenomenon. BAM has examined the effects of the delayed impact phenomenon for spent fuel packages in a comparative analysis between experiments and simulations, which was presented at SMIRT 2013. Meanwhile, IRSN’s has developed a simple numerical tool that can quickly evaluate the influence of various parameters before considering a more complex finite element numerical calculation. This tool was presented at PATRAM 2022. In 2023, BAM and IRSN (now ASNR – French nuclear safety and radiation protection authority) decided to jointly pursue their study on the delayed impact phenomenon, incorporating damping effects, by developing new insights and techniques. To this end, a controlled and simplified set of experiments needs to be developed to calibrate and validate the simplified model. These experiments will record velocity, position of parts, strain and accelerations. The parameters and configurations necessary for the development of the mock-up, as well as the placement and quantity of sensors, are determined through extensive pre-calculations using both complex finite element models and the simplified approach. A key challenge involves precisely controlling the drop of the mock-up to accurately replicate the theoretical contact and damping conditions. Advanced sensor technologies will be employed to acquire reliable and sufficient data. The tests are designed and conducted at BAM's TTS drop test facility in collaboration with ASNR. T2 - PATRAM 2025 CY - San Antonio, TX, USA DA - 27.07.2025 KW - Experiments KW - Impact KW - Drop Tower PY - 2025 AN - OPUS4-63869 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erdmann, Maren T1 - Mechanical characterization of high-density polyethylene in contact with diesel and biodiesel fuels N2 - Renewable resources become more and more relevant to maintain energy demands for an increasing global population. Biosynthetic fuels like biodiesel might replace conventional petrochemical fuels, such as diesel. However, more research is needed to characterize the interaction between the different fuels and polymeric materials widely used in the fuel infrastructure as well as for automotive parts. Especially changes in the structural properties and mechanical behavior of the polyethylene (PE-HD) have to be addressed. The presented work comprises the direct interaction of high density polyethylene (PE-HD) with diesel and biodiesel, resulting in swelling and plasticization. Also long-term degradation phenomena will be discussed. The chosen PE-HD types are typical thermoplastic resins for container and storage tank applications. The impact of diesel and biodiesel in PE-HD is investigated by changes in the mechanical properties with emphasis on the Charpy impact strength. Furthermore, structural and dynamic influences on the polymeric material induced by diesel and biodiesel are proven in Dynamic Mechanical Analysis (DMA). Both methods, Charpy impact strength and DMA, reveal softening effects due to the migration of diesel and biodiesel into the amorphous regions of PE-HD. Since biodiesel is more prone to oxidative degradation compared to diesel, the fuel/air/polymer-interaction is studied for partly immersed tensile test specimens. Main focus of the evaluation is the co-oxidation. Here, the accelerated deterioration of PE caused by the sorption of the facile oxidation of biodiesel into the solid polymer might be a major degradation mechanism in this context. T2 - POLYDAYS 2016 CY - Potsdam, Germany DA - 28.09.2016 KW - PE-HD KW - Diesel KW - Biodiesel KW - Oxidation PY - 2016 AN - OPUS4-37677 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quercetti, Thomas T1 - Fire Test Stand for Thermal Testing of Large Packages for the Transport of Radioactive Materials N2 - Packages for the transport of spent nuclear fuel are designed to withstand severe accidents and must ensure compliance with the IAEA-Regulations prescribing mechanical tests followed by a thermal test. The thermal test involves that a test specimen is exposed to a thermal environment for 30 minutes, simulating the conditions of a hydrocarbon fuel-air fire. The average fire temperature is at least 800°C, and the fire completely engulfs the test specimen. In advance of a regular fire test, BAM performs so-called fire reference tests or calorimeter tests with a fire reference package (FRP) to determine the test conditions for compliance with the IAEA-requirements. T2 - PATRAM 2025 CY - San Antonio, TX, USA DA - 27.07.2025 KW - Experiment KW - Thermal Test KW - Fire PY - 2025 AN - OPUS4-63871 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Roveda, Ilaria T1 - Effect of heat treatment on the microstructure, residual stress state and fatigue properties of PBF-LB/M AlSi10Mg N2 - Al-Si alloys produced by Laser Powder Bed Fusion (PBF-LB/M) techniques allow the fabrication of lightweight free-shape components. Due to the extremely heterogeneous cooling and heating, PBF-LB/M induces high magnitude residual stress (RS) and a fine Si microstructure. As the RS can be deleterious to the fatigue resistance of engineering components, great efforts are focused on understanding their evolution before and after post-process heat treatments (HT). T2 - Alloys for Additive Manufacturing Symposium 2022 (AAMS22) CY - Munich, Germany DA - 12.09.2022 KW - Neutron diffraction KW - X-ray diffraction KW - Crack propagation PY - 2022 AN - OPUS4-55871 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Roveda, Ilaria T1 - Investigation of residual stresses and microstructure effects on the fatigue behaviour of a L-PBF AlSi10Mg alloy N2 - Al-Si alloys produced by Laser Powder Bed Fusion (L-PBF) techniques allow the fabrication of lightweight free-shape components. Due to the high cooling rates occurring during the building process, L-PBF AlSi10Mg alloys exhibit an ultra-fine microstructure that leads to superior mechanical properties in the as-built condition compared to conventional cast Al-Si materials. Nevertheless, L-PBF processing induces high thermal gradients, leading to deleterious residual stress. In order to relax detrimental residual stress and to increase the ductility, post-processing stress relief treatments are performed. The objective of the contribution is to investigate, under different heat treatment condition, the evolution of microstructure and residual stresses in view of optimizing the fatigue performance of the alloy. To this purpose various heat treatments in a range of temperatures between 265°C and 300°C for a duration between 15 minutes and 2 hours are performed. T2 - Fatigue Design 2021 CY - Senlis, France DA - 17.11.2021 KW - AlSi10Mg KW - Additive manufacturing KW - L-PBF KW - Residual stress KW - Heat treatment PY - 2021 AN - OPUS4-53794 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hao, Ning T1 - Molecular Mobility in Polycarbonate/Silsesquioxan based Nanocomposites T2 - Frühjahrstagung der Deutschen Physikalischen Gesellschaft (DPG) CY - Berlin, Germany DA - 2005-03-04 PY - 2005 AN - OPUS4-7174 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böhning, Martin A1 - Goering, Harald T1 - Preparation and Characterisation of Nanoscaled Nanostructured Materials T2 - Nanofair 2004 CY - Karlsruhe, Germany DA - 2004-11-22 PY - 2004 AN - OPUS4-7296 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hölck, Ole T1 - Plasticisation in Glassy Polymer/Gas-Systems - Experimental Results and Detailed Atomistic Modelling T2 - Accelrys Seminar, BAM CY - Berlin, Germany DA - 2005-10-05 PY - 2005 AN - OPUS4-10951 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Retzlaff, J. T1 - Untersuchungen zur Oxidationsbeständigkeit von Geokunststoffen T2 - 11. Informations- und Vortragstagung über Kunststoffe in der Geotechnik FS-KGEO 2009 CY - Munich, Germany DA - 2009-02-12 PY - 2009 AN - OPUS4-19019 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böhning, Martin T1 - Correlation of gas diffusivity and local chain mobility in polycarbonate/POSS nanocomposites as determined by broadband dielectric relaxation spectroscopy T2 - Euromembrane 2012 CY - London, England DA - 2012-09-23 PY - 2012 AN - OPUS4-26629 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böhning, Martin T1 - Kinetic analysis of gas sorption and gas induced dilation and relaxation behaviour of PIM-1 compared to other glassy polymers T2 - Euromembrane 2012 CY - London, England DA - 2012-09-23 PY - 2012 AN - OPUS4-26630 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Konnertz, Nora A1 - Böhning, Martin A1 - Schönhals, Andreas A1 - Ding, Yi T1 - Molecular mobility and gas transport properties of PIM-1 and nano composites based on PIM-1 and phenethylPOSS N2 - Polymers with intrinsic microporosity are of highly interest in the field of gas separation membranes. Especially the first synthesized PIM-1 shows extraordinary permeabilities and selectivities. Unfortunately, PIM-1 tends to physical aging and loses its good properties. Physical aging is related to the molecular mobility of PIM-1 which was here investigated by broadband dielectric spectroscopy (BDS). Besides the studies on pure PIM-1 a polyhedral oligomeric silsesquioxane with phenethyl substituents (PhenethylPOSS) was used as nanofiller (0 - 40 wt-%) in the PIM-1 matrix to improve the gas transport properties and prevent physical aging. The molecular mobility of the solution casted nano composite films was analyzed by BDS as well. Furthermore, gas transport properties were determined with the time lag method (0 - 20 bar) in a temperature range of 35°C to 65°C with N2, O2, CH4 and CO2. T2 - 80. Jahrestagung der DPG und DPG-Frühjahrstagung CY - Regensburg, Germany DA - 06.03.2016 KW - PIM-1 PY - 2016 AN - OPUS4-35541 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schilling, Markus T1 - Failure of PE-HD induced by liquid media (ESC) N2 - As the well-known damage mechanisms slow crack growth (SCG) and environmental stress cracking (ESC) are the major causes for possible failure of polyolefin-based materials, especially for PE-HD, they are highly relevant and need to be considered thoroughly. Furthermore, due to slight but perceptible differences in damaging effect, a differentiation between SCG and ESC is expedient. SCG appears in “inert” or “neutral” media without a decisive influence of the surrounding medium whereas ESC occurs in “active” media, which influence the failure behavior and time to failure crucially. To characterize the inherent resistance of the material against those damage mechanisms, the well-established Full-Notch Creep Test (FNCT) is used. In this study, the FNCT – usually applied according to ISO 16770 [3] using a few universal model liquid media and mainly for pipe materials – is extended by investigations with appropriate parameters of selected relevant PE-HD container materials also in real media, such as the topical fuels diesel and biodiesel. The investigations were performed using a novel FNCT-device with 12 individual sub-stations, each equipped with individual electronic stress and temperature control and continuous online monitoring of the specimen elongation. Especially, mechanical stress and temperature were varied systematically during FNCT and time to failure values, time-dependent elongation data as well as detailed fracture surface analysis by laser scanning microscopy (LSM) were combined for the first time (Fig. 1). Particularly, the fracture surface analysis provides a sound basis to characterize failure behavior, mainly regarding the balance between brittle crack propagation and ductile deformation. Therefore, fracture surface analysis is an essential tool for a decent assessment of SCG and ESC by FNCT measurements. T2 - 17th International Conference on Deformation, Yield and Fracture of Polymers (DYFP) CY - Kerkrade, The Netherlands DA - 25.03.2018 KW - Environmental stress cracking (ESC) KW - PE-HD KW - Full Notch Creep Test (FNCT) KW - Imaging techniques KW - Brittle / ductile fracture behavior KW - Crack propagation analysis PY - 2018 AN - OPUS4-44617 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Werhahn, Olav T1 - Gas metrology in Gemany - contributions to climate and air quality monitoring N2 - Climate and air quality are of fundamental interest worldwide. Gas metrology provides profound solutions to measurement tasks on climate and air quality, e.g., when greenhouse gases or pollutants are to be quantified. Metrological capabilities are demonstrated through participation in the framework of the CIPM Mutual Recognition Arrangement (CIPM MRA). In Germany, this is covered by three institutes: Bundesanstalt für Materialforschung und -prüfung (BAM), Physikalisch-Technische Bundesanstalt (PTB), and Umweltbundesamt (UBA). Together, the three laboratories realize the unit mole by means of the national gas standards and offer services to their customers that are backed-up by internationally accepted calibration and measurement capabilities (CMCs). T2 - Gas Analysis 2024 CY - Paris, France DA - 30.01.2024 KW - Metrology KW - Chemical Analysis KW - Gases PY - 2024 AN - OPUS4-59770 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Compact NMR Spectroscopy in the field: A Versatile Tool for Automated Continuous-Flow Production N2 - Chemical companies must find new paths to successfully survive in a changing environment. The potential of digital technologies belongs to these. Flexible and modular chemical plants can produce various high-quality products using multi-purpose equipment with short downtimes between campaigns and reduce time to market for new products. Intensified continuous production plants allow for difficult to produce compounds. Therefore, fully automated “chemical” process control along with real-time quality control are prerequisites to such concepts and thus should be based on “chemical” information. A commercially available benchtop NMR spectrometer was integrated to the full requirements of an automated chemical production environment such as, e.g., explosion safety, field communication, and robust evaluation of sensor data. It was thereof used for direct loop advanced process control and real-time optimization of the process. Field studies in modular and conventional production plant setups show promising results gaining process knowledge for further optimization. NMR appeared as preeminent online analytical method and allow using a modular data analysis tool, which even served as reliable reference method for further PAT applications (e.g. NIR spectroscopy). In the future, such fully integrated and intelligently interconnecting “smart” systems and processes can speed up the high-quality production of specialty chemicals and pharmaceuticals. T2 - DECHEMA Workshop "Sensorik für die Digitalisierung chemischer Produktionsanlagen" CY - Frankfurt am Main, Germany DA - 13.06.2022 KW - Compact NMR KW - Process Control KW - Modular Production KW - Process Analytical Technology PY - 2022 AN - OPUS4-55037 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Compact NMR Spectroscopy in the field: A Versatile Tool for Automated Continuous- Flow Production N2 - Chemical companies must find new paths to successfully survive in a changing environment. The potential of digital technologies belongs to these. Flexible and modular chemical plants can produce various high-quality products using multi-purpose equipment with short downtimes between campaigns and reduce time to market for new products. Intensified continuous production plants allow for difficult to produce compounds. Therefore, fully automated “chemical” process control along with real-time quality control are prerequisites to such concepts and thus should be based on “chemical” information. A commercially available benchtop NMR spectrometer was integrated to the full requirements of an automated chemical production environment such as, e.g., explosion safety, field communication, and robust evaluation of sensor data. It was thereof used for direct loop advanced process control and real-time optimization of the process. Field studies in modular and conventional production plant setups show promising results gaining process knowledge for further optimization. NMR appeared as preeminent online analytical method and allow using a modular data analysis tool, which even served as reliable reference method for further PAT applications (e.g. NIR spectroscopy). In the future, such fully integrated and intelligently interconnecting “smart” systems and processes can speed up the high-quality production of specialty chemicals and pharmaceuticals. T2 - 9th Annual Practical Applications of NMR in Industry Conference (PANIC) CY - Nashville, Tennessee, USA DA - 17.10.2021 KW - Process Analytical Technology KW - Benchtop-NMR KW - NMR spectroscopy PY - 2021 AN - OPUS4-53585 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Online-NMR- und -Raman-Spektroskopie – Kombination von PAT-Methoden für mehr Prozessverständnis N2 - Die Verbesserung des Prozessverständnisses ist eine notwendige Voraussetzung für die Anwendung von Konzepten wie „Industrial Internet of Things (IIoT)“ oder „Industrie 4.0“. Online-Methoden der Prozessanalytik (PAT) ermöglichen die direkte Verfolgung der ablaufenden Reaktionen innerhalb chemischer und pharmazeutischer Produktionsschritte und können somit einen wichtigen Beitrag für die Entwicklung von neuen, innovativen Prozessführungsstrategien liefern. Während die Online-Raman-Spektroskopie bereits erfolgreich im industriellen Umfeld zum Einsatz kommt, ist der Entwicklungsstand für die Online-Niederfeld-NMR-Spektroskopie bislang noch nicht ausreichend für einen routinemäßigen Einsatz innerhalb industrieller Produktionsumgebungen. Der hohe Informationsgehalt der NMR-Daten in Verbindung mit einem geringen Kalibrieraufwand macht die Methode sehr interessant für moderne Konzepte flexibler Produktionsanlagen für die Herstellung vieler unterschiedlicher Produkte in wechselnden Kampagnen. Speziell in modularen Produktionskonzepten kann so die Rüstzeit der Prozessanalytik deutlich verkürzt werden. Am Beispiel der heterogen katalysierten Hydrogenierung von 2-Butin-1,4-diol wird der Einsatz der Kombination von Online-NMR und -Raman-Spektroskopie demonstriert. Dieser Prozessschritt aus der industriellen Synthese des Lösungsmittels Tetrahydrofuran verläuft über ein Zwischenprodukt, welches konkurrierende Reaktionspfade aufweist. Die Kombination von Informationen aus der PAT, sowie von klassischen Prozessgrößen, wie Druck, Temperatur und Durchfluss in einem hoch automatisierten Aufbau erleichtert die Entwicklung und Erprobung von neuen Konzepten für die Prozessführung. T2 - 10. ProcessNet-Jahrestagung CY - Online meeting DA - 21.09.2020 KW - Hydrogenierung KW - Benchtop-NMR KW - Raman-Spektroskopie KW - Prozessanalytik PY - 2020 AN - OPUS4-51363 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Industrial Applications of Low-Field NMR Spectroscopy for Process and Quality Control of Silanes N2 - The combination of different silanes as starting materials and as a product of hydrolysis by several alcohols or water creates a range of hundreds of technical products for a wide range of applications. In recent years, functional trialkoxysilanes have proven to be multi-purpose organosilanes. Applications range from weather protection of buildings to bonding-imparting properties in the glass fiber industry, for sealants and adhesives, for coatings and paints to the modification of polymer materials. Commercial benchtop NMR spectrometers have the potential to be used in silane chemistry as an online method for reaction monitoring and quality control [1]. Interesting NMR nuclei for the above-mentioned products are 1H and 29Si. In a joint research cooperation between EVONIK and BAM, the applicability of low-field NMR spectroscopy for the chemical analysis of silanes was evaluated based on various case studies. In the course of the case studies it was shown how low-field NMR spectroscopy extends the application range of chemical analysis to new applications where existing technologies such as NIR, Raman, UV/VIS, etc. cannot be used quantitatively due to lack of reference data. T2 - 5th European Conference on Process Analytics and Control Technology (EuroPACT) CY - Online meeting DA - 15.11.2021 KW - NMR spectroscopy KW - Benchtop-NMR KW - Silanes KW - Quality Control PY - 2021 AN - OPUS4-53777 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Recknagel, Sebastian T1 - Certified reference material for the determination of hydrolytic resistance of borosilicate glass N2 - The preparation of certified reference material for the determination of hydrolytic resistance of borosilicate glass is described. Certified properties are the acid consumption according to the relevant standard procedures described in ISO 720, USP<660> and Ph.Eur. 3.2.1. T2 - 26. International Congress on Glass CY - Berlin, Germany DA - 03.07.2022 KW - Borosilicate glass KW - CRM KW - Hydrolytic resistance PY - 2022 AN - OPUS4-55521 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Chemische Prozesskontrolle für modulare Produktionskonzepte mit direkten analytischen Methoden N2 - Flexible Produktionskonzepte werden oft mit modularen, schnell rekonfigurierbaren Einheiten verbunden. Um die Vorteile dieser flexiblen Produktion tatsächlich nutzen zu können ist neben einer geeigneten Infrastruktur auch eine ebenso anpassungsfähige Qualitätskontrolle unverzichtbar. Analysengeräte und Sensoren werden heutzutage immer kompakter und kostengünstiger in ihrer Anschaffung. Dadurch wird es möglich eine große Anzahl von Messstellen innerhalb einer Anlage zu realisieren. Die erfassten Datenmengen erfordern zuverlässige und robuste Auswerteverfahren, die sich in das Gesamtkonzept der Automatisierung einer derart flexiblen Produktion nahtlos integrieren. Referenzdaten aus direkten Methoden wie der NMR-Spektroskopie können hier einen wertvollen Beitrag zur Generierung von Prozesswissen für die Entwicklung neuer Modelle für kostengünstigere Analysenverfahren leisten. T2 - 16. Kolloquium des AK Prozessanalytik CY - Online meeting DA - 23.11.2020 KW - NMR-Spektroskopie KW - Prozessanalytik KW - Modulare Produktion KW - Chemische Prozesskontrolle PY - 2020 AN - OPUS4-51658 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eggers, Romina T1 - Investigation of the mass contents of Ptotal and Pplant available with ICP OES and XRF N2 - The Intelligence for Soil (I4S) project deals with the development of an integrated system for the site-specific soil fertility management. One goal of the project is to establish a mobile sensor platform for soil mapping. The task here is the installation and optimization of a XRF sensor for online measurement directly on the field. The fast soil mapping allows later on a site-specific fertilisation of essential plant nutrients like K, Ca and P. In order to optimize the application of the fertilizers it is necessary to relate the total contents analysed with XRF to the soil nutrients which are available to the plants. For this purpose the plant available phosphate supply was analysed with the Calcium-Acetate-Lactate extraction method (CAL) according to VDLUFA and compared with the total contents. T2 - BonaRes Statusseminar 2020 CY - Leipzig, Germany DA - 17.02.2020 KW - RFA KW - Phosphor KW - Pflanzenverfügbarkeit PY - 2020 AN - OPUS4-52067 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heuser, Lina T1 - An overview of structural, physical and thermal properties of low melting zinc and lead borate glasses N2 - Low melting zinc borate glasses awake interest to replace lead borate glasses in the silver metallization pastes for solar cells or microelectronics. In the current study, characteristic properties of alkali zinc borate glasses (X2O-ZnO-B2O3, X = Li, Na, K, Rb) were compared to an earth alkali zinc borate glass (CaO-ZnO-B2O3). Additionally, zinc oxide is partially substituted by lead oxide or cooper oxide in the borate glasses (Li2O-PbO-B2O3, Na2O ZnO CuO-B2O3). The alkali zinc borate glasses indicate less differences in Raman spectra, and thus in structural properties, in comparison to the Ca and Pb ions influence. LPbB (Tg = 401 °C) has a lower viscosity than LZB (Tg = 468 °C) and CaZB has the highest glass transition temperature (Tg = 580 °C). The Angell plot for the alkali zinc borate glasses shows a high fragility m = 80. Besides Tg, the density measured by means of the Archimedean principle, molar volume, and coefficient of thermal expansion (CTE) of the glasses were investigated. Trends could be found according to alkali ions or intermediate oxides. The density increases with decreasing alkali ion size from KZB (2.632 g/cm3) to LZB (2.829 g/cm3) and increases from LZB to LPbB (3.764 g/cm3). CTE ranges between 7.09 10-6 K-1 for CaZB and 11.5 10 6 K 1 for KZB and RZB. The differential thermal analysis (DTA) and X ray diffraction (XRD) indicate crystallization of various crystalline phases during heating with 5 K/min in most cases. T2 - 94. Glastechnische Tagung CY - Online meeting DA - 10.05.2021 KW - Borate glasses KW - Glass structure KW - Viscosity KW - Young´s Modulus KW - Alkali ions PY - 2021 AN - OPUS4-52867 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bornemann-Pfeiffer, Martin T1 - Modular production involving Benchtop NMR: Current application examples driven by digitalization N2 - The demand for increasing product diversity in the chemical and pharmaceutical industry calls for new production processes that enable greater flexibility. Therefore, plants are needed which can be adapted to new processes in a fast manner and be scaled up and down easily to volatile market demands. Modular production techniques in combination with advanced process analytical technology (PAT) are considered as a promising solution able to fulfil these requirements. The success and acceptance of modular concepts in both new and existing plants is dependent of its reliability, easy applicability, and standardization. In recent past, enormous efforts were made to overcome existing barriers in a superordinate level, e.g. DEXPI [1], ENPRO [2], or MTP [3] naming just a few. Here, we’d like to present a few, more hands-on, application examples which are shown in Figure 1 aiming to increase process flexibility and applicability. This includes: a) The development of an additively manufactured mixer—flow reactor combination for the application inside of NMR instruments. [4] b) The application of automated, model-based approaches for model development and spectra evaluation. c) The application of machine-assisted spectral model building as a genuine alternative to classical model-based approaches [5] d) Improvement of NIR calibration through online available NMR reference data. [6] These examples represent miscellaneous use cases but result of the same fact: the increased use and availability of data through advanced PAT and therefore new opportunities utilizing them. T2 - SMASH - Small Molecule NMR Conference CY - Online meeting DA - 30.08.2021 KW - Process analytical technology KW - NMR spectroscopy KW - Automation PY - 2021 AN - OPUS4-53803 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Low-Field NMR Spectroscopy on Solid Dispersions A Flow Injection Method for End-Point Control of Azo Couplings for Industrial Pigment Production N2 - Global demand for pigments is expected to increase to around 13.4 million tons per year by 2030, representing approximately $22 billion – 5% of which will be azo pigments as the main organic pigments. Azo pigments, i.e., especially the azo bridge required for them, are almost exclusively produced in technology by the so-called azo coupling reaction in large-scale approaches on the scale of 50–100 cubic meters. Among other things, one of the reasons why large-scale production itself is still essentially discontinuous is the lack of analytical methods for a continuous azo pigment synthesis. In an azo coupling process, an aromatic amine is diazotized to form the diazonium compound (diazo compound), which then reacts with a coupling component, i.e., "couples". A slight excess of the coupler is desired for the end of the reaction, which stoichiometrically consumes the remaining (harmful) diazo compound, i.e., below 500 ppm. This is carried out with a manual spotting reaction of a fast-binding coupler. To carry out continuous azo coupling, care must be taken to ensure that the actual coupling reaction proceeds as rapidly as possible, i.e., preferentially, compared with possible side reactions. Reliable measuring methods are thus a decisive criterion for the useful performance of a continuous azo pigment synthesis. An analytical online procedure is difficult due to several limitations at once: solid dispersions extremely limit the range of reproducible analytical procedures. In addition, the appearance of a signal (e.g., excess of a starting material) in the ppm range must be reliably detected against the matrix background. The back-titration method and benchtop NMR spectroscopy were used to overcome these problems. We present a feasibility study for a suitable process analysis with benchtop NMR spectroscopy on disperse systems for equimolar dosing of the "diazotization" or "coupling" sub-step in azo coupling, which was carried out in cooperation with a chemical company. This could replace tedious manual spotting T2 - SMASH Small molecule NMR conference 2023 CY - Baveno, Italy DA - 17.09.2023 KW - Benchtop NMR KW - Dispersions KW - Process Analytical Technology KW - Process monitoring PY - 2023 AN - OPUS4-58399 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Compact NMR Spectroscopy in the field: A Versatile PAT Tool for Production of Specialty Chemicals N2 - Companies of chemical industry find themselves more often in a rapidly changing environment, e.g., due to variability of raw material quality or energy costs and efficiency. Process optimization and new process concepts become more and more important. For example, flexible and modular chemical plants can produce various high-quality products using multi-purpose equipment with short downtimes between campaigns and reduce time to market for new products. Intensified continuous production plants allow for difficult to produce compounds like exothermic reactions with high heat dissipation. Highly automated “chemical” process control along with real-time quality control are prerequisites to such concepts and thus should be based on “chemical” information. A commercially available benchtop NMR spectrometer was integrated to the full requirements of an automated chemical production environment such as explosion safety, field communication, and robust evaluation of sensor data. Field studies in modular and conventional production plant setups show promising results gaining process knowledge for further optimization. NMR appeared as preeminent online analytical method and allow using a modular data analysis approach, which can even serve as reliable reference method for further calibration-dependent PAT applications (e.g., NIR or Raman spectroscopy). Based on experiences from earlier field studies an improved NMR analyzer enclosure setup was developed and built, including the option of a secondary method (e.g., optical spectroscopy). Integrated control systems allow for a flexible implementation based on the available automation infrastructure at the chemical plant or pilot plant setup. In the future, fully integrated and intelligently interconnecting “smart” PAT systems and processes have the potential speed up the setup of production equipment for chemicals and pharmaceuticals and therefore help to reduce the time-to-market. T2 - SMASH Small molecule NMR conference 2023 CY - Baveno, Italy DA - 17.09.2023 KW - Benchtop-NMR KW - Process Analytical Technology KW - Chemical Production KW - NMR spetroscopy PY - 2023 AN - OPUS4-58398 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Contributions Towards Variable Temperature Shielding for Compact NMR Instruments N2 - The application of compact NMR instruments to hot flowing samples or exothermically reacting mixtures is limited by the temperature sensitivity of permanent magnets. Typically, such temperature effects directly influence the achievable magnetic field homogeneity and hence measurement quality. The internal-temperature control loop of the magnet and instruments is not designed for such temperature compensation. Passive insulation is restricted by the small dimensions within the magnet borehole. Here, we present a design approach for active heat shielding with the aim of variable temperature control of NMR samples for benchtop NMR instruments using a compressed airstream which is variable in flow and temperature. Based on the system identification and surface temperature measurements through thermography, a model predictive control was set up to minimise any disturbance effect on the permanent magnet from the probe or sample temperature. This methodology will facilitate the application of variable-temperature shielding and, therefore, extend the application of compact NMR instruments to flowing sample temperatures that differ from the magnet temperature. T2 - SMASH Small molecule NMR conference 2023 CY - Baveno, Italy DA - 17.09.2023 KW - Benchtop NMR KW - Temperature Control KW - Process Analytical Technology KW - Flow NMR PY - 2023 AN - OPUS4-58400 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Low-Field NMR Spectroscopy on Solid Dispersions – A Flow Injection Method for End-Point Control of Azo Couplings for Industrial Pigment Production N2 - Global demand for pigments is expected to increase to around 13.4 million tons per year by 2030, representing approximately $22 billion – 5 % of which will be azo pigments as the main organic pigments. Azo pigments, i.e., especially the azo bridge required for them, are almost exclusively produced in technology by azo coupling reactions in large-scale approaches on the scale of 50–100 cubic meters. Among other things, one of the reasons why large-scale production itself is still essentially discontinuous is the lack of analytical methods for a continuous process control. In an azo coupling process, an aromatic amine is diazotized to form the diazonium compound (diazo compound), which reacts with a coupling component, i.e., "couples". A slight excess of the coupler is desired for the end of the reaction, which stoichiometrically consumes the remaining (harmful) diazo compound, i.e., below 500 ppm. This is carried out with a manual spotting reaction of a fast-binding reagent. To carry out continuous azo coupling, care must be taken to ensure that the actual coupling reaction proceeds as rapidly as possible, i.e., preferentially, compared with possible side reactions. Reliable measuring methods are thus a decisive criterion for the useful performance of a continuous azo pigment synthesis. An analytical online procedure is difficult due to several limitations at once: solid dispersions extremely limit the range of reproducible analytical procedures. In addition, the appearance of a signal (e.g., excess of a starting material) in the ppm range must be reliably detected within the matrix background. A proposal based on a back-titration method and benchtop NMR spectroscopy were used to overcome these problems. We present a feasibility study for a suitable process analysis with benchtop NMR spectroscopy on disperse systems for equimolar dosing of the "diazotization" or "coupling" sub-step in azo coupling. This could potentially replace tedious manual spotting reactions in conventional discontinuous production and paves the way for continuous production. T2 - 19. Kolloquium AK Prozessanalytik CY - Darmstadt, Germany DA - 04.12.2024 KW - NMR Spectroscopy KW - Process Analytical Technology KW - Azo-Pigments KW - Benchtop-NMR PY - 2024 AN - OPUS4-62176 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Compact NMR Spectroscopy in the field: A Versatile PAT Tool for Production of Specialty Chemicals N2 - Companies of chemical industry find themselves more often in a rapidly changing environment, e.g., due to variability of raw material quality or energy costs and efficiency. Process optimization and new process concepts become more and more important. For example, flexible and modular chemical plants can produce various high-quality products using multi-purpose equipment with short downtimes between campaigns and reduce time to market for new products. Intensified continuous production plants allow for difficult to produce compounds like exothermic reactions with high heat dissipation. Therefore, fully automated “chemical” process control along with real-time quality control are prerequisites to such concepts and thus should be based on “chemical” information. A commercially available benchtop NMR spectrometer was integrated to the full requirements of an automated chemical production environment such as explosion safety, field communication, and robust evaluation of sensor data. Field studies in modular and conventional production plant setups show promising results gaining process knowledge for further optimization. NMR appeared as preeminent online analytical method and allow using a modular data analysis approach, which can even serve as reliable reference method for further calibration-dependent PAT applications (e.g., NIR spectroscopy). Based on experiences from these field studies an improved analyzer enclosure setup was developed and built, including the option of a secondary method besides NMR spectroscopy. Integrated control systems allow for a flexible implementation based on the available automation infrastructure at the chemical plant or pilot plant setup. In the future, fully integrated and intelligently interconnecting “smart” PAT systems and processes have the potential speed up the setup of production equipment for chemicals and pharmaceuticals and therefore help to reduce the time-to-market. T2 - Practical Applications of NMR in Industry Conference (PANIC) 2022 CY - La Jolla, CA, USA DA - 16.10.2022 KW - Process Analytical Technology KW - Benchtop NMR KW - Modular production PY - 2022 AN - OPUS4-56090 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Compact NMR Spectroscopy in the field: A Versatile PAT Tool for Production of Specialty Chemicals N2 - Chemical companies must find new paths to successfully survive in a changing environment, especially by utilizing the potential of digital technologies. Flexible and modular chemical plants can produce various high-quality products using multi-purpose equipment with short downtimes between campaigns and reduce time to market for new products. Therefore, fully automated process control along with real-time quality control are prerequisites to such concepts and thus should be based on “chemical” information. A commercially available benchtop NMR spectrometer was integrated to the full requirements of chemical production environment such as explosion safety, field communication, and robust evaluation of sensor data. It was used for direct loop advanced process control and real-time optimization of the process. Field studies in modular and conventional production plants show promising results gaining process knowledge. NMR appeared as preeminent online analytical method and allow using a modular data analysis tool, which even served as reliable reference method for further PAT applications (e.g. NIR spectroscopy). In the future, fully integrated and interconnecting “smart” systems and processes can speed up the high-quality production of specialty chemicals and pharmaceuticals. T2 - ProcessNet and DECHEMA-BioTechNet Jahrestagungen 2022 with 13th ESBES Symposium CY - Aachen, Germany DA - 12.09.2022 KW - Process Analytical Technology KW - Benchtop NMR KW - Modular production PY - 2022 AN - OPUS4-55918 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Compact NMR Spectroscopy in the field: A Versatile PAT Tool for Production of Specialty Chemicals N2 - Chemical companies must find new paths to successfully survive in a changing environment, especially by utilizing the potential of digital technologies. Flexible and modular chemical plants can produce various high-quality products using multi-purpose equipment with short downtimes between campaigns and reduce time to market for new products. Therefore, fully automated process control along with real-time quality control are prerequisites to such concepts and thus should be based on “chemical” information. A commercially available benchtop NMR spectrometer was integrated to the full requirements of chemical production environment such as explosion safety, field communication, and robust evaluation of sensor data. It was used for direct loop advanced process control and real-time optimization of the process. Field studies in modular and conventional production plants show promising results gaining process knowledge. NMR appeared as preeminent online analytical method and allow using a modular data analysis tool, which even served as reliable reference method for further PAT applications (e.g. NIR spectroscopy). In the future, fully integrated and interconnecting “smart” systems and processes can speed up the high-quality production of specialty chemicals and pharmaceuticals. T2 - 17. AKPAT Kolloquium 2022 CY - Amersfoort, Netherlands DA - 19.09.2022 KW - Process Analytical Technology KW - Benchtop NMR KW - Modular production PY - 2022 AN - OPUS4-55919 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tuma, Dirk T1 - Comparison of multi-parameter Helmholtz and molecular-based EoS for the description of the density of a gravimetrically prepared LNG-type mixture N2 - The composition of liquefied natural gas (LNG) depends on the original gas composition and on the process of liquefaction and regasification. Regasified LNG typically has a lower percentage content of N2 and CH4 and a slightly higher percentage of higher alkanes than the original natural gas. The densities of this mixture, at four different temperatures, from 250 to 350 K and pressures up to 20 MPa, were determined using a high-accuracy single-sinker magnetic suspension densimeter at the UVa. The experimental densities were compared to those calculated by different multi-parameter equation of state (EoS) in terms of the reduced Helmholtz energy (AGA8-DC92, GERG-2008 and EoS-LNG), by a truncated virial EoS (SGERG-88), and by other EoS based on the perturbed-chain statistical associating fluid theory (PC-SAFT) and CP-PC-SAFT. T2 - 17th PPEPPD International Conference on Properties and Phase Equilibria for Product and Process Design CY - Bad Gögging, Germany DA - 11.05.2025 KW - LNG KW - High-pressure density KW - Reference equation of state PY - 2025 AN - OPUS4-63524 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - NMR Spectroscopy as a PAT tool: Field integration of a laboratory instrument N2 - Companies of chemical industry find themselves more often in a rapidly changing environment, e.g., due to variability of raw material quality or energy costs and efficiency. Process optimization and new process concepts become more and more important. Flexible and modular chemical plants can produce various high-quality products using multi-purpose equipment with short downtimes between campaigns and reduce time to market for new products. Intensified continuous production plants allow for difficult to produce compounds like exothermic reactions with high heat dissipation. Highly automated chemical process monitoring along with real-time quality control are prerequisites to such concepts and, thus, should be based on chemical information. A commercially available benchtop NMR spectrometer was integrated to the full requirements of an automated chemical production environment such as explosion safety, field communication, and robust evaluation of sensor data. Field studies in modular and conventional production plant setups show promising results gaining process knowledge for further optimization. NMR spectroscopy appeared as preeminent online analytical method and allows using a modular data analysis approach, which can even serve as reliable reference method for further calibration-dependent PAT applications (e.g., NIR or Raman spectroscopy). Based on experiences from earlier field studies an improved field enclosure setup was developed and built, including the option of a secondary analytical method (e.g., optical spectroscopy). Integrated control systems allow for a flexible implementation based on the available automation infrastructure at the chemical plant or pilot plant setup. In the future, modular interconnecting “smart” PAT systems and process equipment have the potential speed up the setup of production equipment for chemicals and pharmaceuticals and therefore help to reduce the time-to-market. T2 - Practical Applications of NMR in Industry Conference (PANIC) CY - Rockville, MD, USA DA - 19.05.2025 KW - Compact NMR spectroscopy KW - Process Analytical Technology KW - Field Integration KW - qNMR PY - 2025 AN - OPUS4-63193 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Battistella, Beatrice T1 - Microwave-Induced Nitrogen-Plasma Mass Spectrometric Analysis of Cathodic Materials for Lithium-Ion Batteries N2 - Lithium-ion batteries (LIBs) are multi-component devices ubiquitously used for powering small consumer devices as well as in the electric mobility sector and for energy storage. From the first successful test in 1986, LIBs performances have improved substantially, doubling their specific energy from 120 to 270 Wh kg−1 in about 30 years, while mass production contributed to a decline of about 98% of their price. The demand is set to grow steadily and is expected to lead to further improvements in performance and falls in prices. [1] In view of the current clean energy transition, the extensive use of this technology is accompanied by an increase of end-of-life LIBs, containing critical minerals for the production of new batteries. The recycling of exhausted batteries is a topic destined to draw increasing attention, and for this purpose, LIBs composition determination is a crucial premise. While the first commercialized LIB contained about 60% cobalt by mass, the current trend is to lower the Co content by the use of lithium nickel manganese cobalt (NMC) oxide as cathodic material (ca. 6% Co), increasing the cell-specific energy and reducing the raw material price. [2] Besides the change in the layered transition metal oxide composition, elemental substitution, surface treatment and concentration gradient structures, used to increase battery performances, further contribute to increase the cathodic material complexity. [3] In this work, the composition of several commercial NMC oxides was investigated by Microwave-Induced Nitrogen-Plasma Mass Spectrometry, suitable for the trace analysis on these materials due to its high matrix tolerance in presence of high concentration of transition metals and the easy-to-ionize lithium. [4] Additionally, the effects of different gas flows and ion optics on the matrix tolerance were studied. The method was validated by analyzing BAM-S014 (NMC oxide) as reference material and allowed the generation of a library for such metal oxides. Determination of their exact elemental composition helps users to predict the properties of the cathodic material (e. g. presence of particles coating, additives, or doping elements), and at the same time allows the design of safe recycling procedures, which must consider the presence of health and environment hazardous elements such as uranium, cadmium, or other heavy metals. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Nitrogen-Plasma Mass Spectrometry KW - Lithium-Ion Battery KW - Recycling PY - 2025 AN - OPUS4-62817 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vega-Maza, D. T1 - Accurate experimental speed of sound data of natural gas and hydrogen-enriched natural gas N2 - The work presents speed of sound data of an 11-component synthetic natural gas as well as of a hydrogen-enriched natural gas measured at temperatures between 260 and 350 K and pressures up to 13 MPa. The results are compared with the corresponding values from two equation-of-state models, namely AGA8-DC92 and GERG-2008. T2 - 21st Symposium on Thermophysical Properties CY - Online meeting DA - 20.06.2021 KW - Sspeed of sound KW - Natural gas mixtures KW - Equation of state PY - 2021 AN - OPUS4-52876 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Contributions Towards Variable Temperature Shielding for Compact NMR Instruments N2 - The application of compact NMR instruments to continuously flowing samples at higher temperatures or exothermically reacting mixtures is limited by the temperature sensitivity of permanent magnets. Typically, such temperature effects directly influence the achievable magnetic field homogeneity and hence measurement quality. The internal-temperature control loop of the magnet and instruments is typically not designed for compensation of such effects. Passive insulation is restricted by the small dimensions within the magnet borehole. Here, we present a design approach for active heat shielding with the aim of variable temperature control of NMR samples for benchtop NMR instruments using a compressed airstream which is variable in flow and temperature. Based on the system identification and surface temperature measurements using an optical thermo-graphy setup, a model predictive control was set up to minimize any disturbance effect on the permanent magnet from the probe or sample temperature. This methodology will facilitate the application of variable-temperature shielding and, therefore, potentially extend the application of compact NMR instruments to flowing samples at higher temperature than the permanent magnet. T2 - 18. Kolloquium AK Prozessanalytik CY - Krefeld, Germany DA - 27.11.2023 KW - Thermostating KW - Benchtop-NMR KW - NMR spectroscopy KW - Process Analytical Technology PY - 2023 AN - OPUS4-58970 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf T1 - PTR-MS as a tool for the determination of formaldehyde, ammonia and volatile organic sulfur compounds together with VOC N2 - The use of proton-transfer-reaction mass spectrometry (PTR-MS) for the determination of formaldehyde, ammonia and volatile sulfur organic compounds is described and suggestions are made for the application of stationary PTR-MS in a test laboratory. One advantage of PTR-MS compared to TD-GC-MS (thermal desorption gas chromatography mass spectrome-try) is the faster online measurement. Another advantage is the simultaneous determination of formaldehyde, ammonia, very volatile organic compounds (VVOC) and volatile organic com-pounds (VOC) which normally needs four different kinds of sampling. Coupling the PTR-MS with (multiple) air sample canisters or (multiple) emission test chambers would enable a quick analysis of indoor air and material emissions. T2 - Indoor Air Conference 2024 CY - Honolulu, HI, USA DA - 07.07.2024 KW - Proton-transfer-reaction mass spectrometry PY - 2024 AN - OPUS4-60746 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Digital tools for cemented waste package and facility monitoring and prediction N2 - To provide better means for a safe and effective monitoring of cemented waste packages including prediction tools to assess the future integrity development during pre-disposal activities, several digital tools are evaluated and improved in the frame of the EC funded project PREDIS. Safety enhancement (e. g. less exposure of testing personnel) and cost effectiveness are part of the intended impact. The work includes but is not limited to inspection methods such as muon imaging, wireless sensors integrated into waste packages as well as external package and facility monitoring such as remote fiber optical sensors. The sensors applied will go beyond radiation monitoring and include proxy parameters important for long term integrity assessment (e. g. internal pressure). Sensors will also be made cost effective to allow the installation of much more sensors compared to current practice. The measured data will be used in digital twins of the packages for specific simulations (geochemical, integrity) providing a prediction of future behavior. Machine Learning techniques trained by the characterization of older packages will help to connect the models to the actual data. All data (measured and simulated) will be collected in a joint data base and connected to a decision framework to be used at actual facilities. The paper includes detailed information about the various tools under consideration, their connection and first results of our research. T2 - International Conference on Radioactive Waste Management: Solutions for a Sustainable Future CY - Vienna, Austria DA - 01.11.2021 KW - Radioactive waste disposal KW - Monitoring KW - Cemented waste PY - 2021 AN - OPUS4-54163 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lay, Vera T1 - New materials and innovative monitoring for safe sealing structures in underground repositories N2 - Within the project SealWasteSafe, we advance construction materials and monitoring concepts of sealing structures applied for underground disposal of nuclear waste. As these engineered barriers have high demands concerning integrity, an innovative alkali-activated material (AAM) is improved and tested on various laboratory scales that is highly suitable for the application in salt as a host rock. This AAM has a low reaction kinetics related to a preferential slow release of the heat of reaction in comparison to alternative salt concretes based on Portland cement or magnesium oxychloride cements. Hence, crack formation due to thermally induced strain is reduced. A comprehensive multi-sensory monitoring scheme is developed and investigated to compare the setting process of AAM and salt concrete for manufactured specimens (100-300 l). The analysed parameters include temperature and humidity of the material, acoustic emissions, and strain variations recorded by fiber optic cables. Passive sensor systems based on radiofrequency identification technology (RFID) embedded in the concrete allow for wireless access and are compared to conventional cabled systems for temperature and humidity measurements. Furthermore, ultrasonic methods are used for quality assurance to detect obstacles, potential cracks and delamination. Field layout and applied imaging techniques are optimised to enhance the image quality. To characterise the inside of the test engineered barrier and achieve a proof-of-concept, an ultrasonic borehole probe is developed to allow for phased arrays that can further improve the detection of potential cracks. Modelling results and first analysis of half-spherical specimen prove the reliability of the directional response caused by the phased arrays of the newly constructed ultrasonic borehole probe. Overall, the project SealWasteSafe improves the construction material, multi-sensory monitoring concepts and ultrasonics for quality assurance. Particularly for salt as a host rock, this will help to develop safe sealing structures for nuclear waste disposal. T2 - 9th IGD-TP Symposium CY - Zurich, Switzerland DA - 20.09.2022 KW - SealWasteSafe KW - Monitoring KW - Engineered barrier systems KW - Alkali-activated material KW - Ultrasonic inspection PY - 2022 AN - OPUS4-55826 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyerdierks, M. A1 - Schreiber, V. A1 - Böhne, Ch. A1 - Jüttner, S. A1 - Meschut, G. A1 - Rethmeier, Michael T1 - Validierung von Methoden zur Vermeidung von Liquid Metal Embrittlement an realitätsnahen Prinzipbauteilen (IGF 21483 BG / P 1488) N2 - Ziel des Forschungsprojekts ist es, eine Korrelation zwischen Gleeble-Heißzug-Prüfverfahren und Widerstandspunktschweiß-basierten Prüfverfahren herzustellen. Es soll die Effektivität von Methoden zu Vermeidung von Liquid Metal Embrittlement an realitätsnahen Prinzipbauteilen bewertet werden. Weiterhin soll Kenntnis über Auswirkungen von LME Rissen auf das Tragverhalten von realitätsnahen Prinzipbauteilen gewonnen werden. T2 - 30. Schweißtechnische Fachtagung CY - Barleben, Germany DA - 07.10.2021 KW - Liquid Metal Embrittlement KW - Gleeble KW - Heißzug KW - Widerstandpunktschweißen KW - Flüssigmetallversprödung PY - 2021 AN - OPUS4-54061 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sternbaek, L. T1 - Macrophage-uptake of sialic acid-targeted molecularly imprinted polymers (SA-MIPs) N2 - Sialic acid (SA) is a cell surface glycan, which has a strong role in many cell activities including differentiation, proliferation, and the immune response. The amount of SA has been found to be correlated with cancer, with an upregulation on more aggressive cancers. Therefore, there is great interest in developing methods for detection of SA on cancer cells. We are screening SA on cancer cell lines by using fluorescent molecularly imprinted polymers, SA-MIPs.Macrophages, which evolve from mono-cytes, are well known for their extraordinary ability to phagocytose foreign objects. This could lead to the hypothesis that the SA-MIPs can be recognized by macrophages as foreign object; thus leading to internalization and potential degradation. We have discovered that SA-MIPs can be detected after incubation with the RAW macrophage cells, with increasing fluorescence over time. The microscopy analysis shows that the RAW cells ingest the SA-MIP particles. This information is important when planning to use SA-MIPs in future in vivo applications. T2 - The 69th Annual Conference of the Nordic Microscopy Society, 2018 CY - Lyngby, Denmark DA - 25.06.2018 KW - Sialic acid KW - MIPs KW - Macrophages PY - 2018 AN - OPUS4-45422 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kimani, Martha Wamaitha T1 - Fluorescent core/shell molecularly-imprinted nanoparticles for staining sialic acid (SA) residues on tumor cells N2 - Cancer is a leading cause of death worldwide, and its early detection and resultant treatment contributes significantly to patient recovery and survival. Detection is currently based on magnetic resonance imaging and computed tomography, methods that are expensive, while processing of the results is time consuming. There is a need for low-cost cancer-detection techniques that give conclusive results in the shortest time possible. Molecularly imprinted polymers (MIPs) targeting tumor markers on cancerous cells may provide a cheaper solution for cancer detection. Thin MIP layers immobilized on particle platforms are known to give faster response times and increased selectivity in comparison to bulk MIPs. It has been reported that a fluorescent monomer can be incorporated into the MIP layer, allowing for faster detection of the target group, thus significantly shortening the turn-around time for biopsies. Changes in sialylation patterns of cell surface glycoproteins indicate malignancy. Here, we present the development of MIPs that target sialic acid-terminated glycoproteins (SA MIPs), prepared as a thin layer on a silica nanoparticle platform. A fluorescent monomer is incorporated into the MIP layer, and upon binding of the target group to the specific binding pockets in the MIP, the fluorescence signal is enhanced. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) are used for structural characterization. To validate the specificity, fluorescence changes of MIPs in the presence and absence of template are compared to their corresponding non-imprinted polymer particles (NIP). Initial binding experiments with tumor cells using fluorescence microscopy demonstrate that the presented technique shows promise as a cheaper alternative to current detection methods, while allowing for relatively shorter analysis of biopsy results. T2 - MIP 2018 CY - Hebrew University Jerusalem, Belgium House, Israel DA - 24.07.2018 KW - Sialic acid KW - MIPs KW - Fluorescence PY - 2018 AN - OPUS4-45419 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - van de Kreeke, Johannes A1 - Melzer, Michael T1 - The Digital RM Document (DRMD) N2 - The Digital Reference Material Document (DRMD) is a machine-readable replacement of the usual PDF Certificate. We have developed a fully functional beta version that is already in use for selected BAM materials and publicly available from the COMAR database, which showcases its feasibility. T2 - Deutsche Marktüberwachungskonferenz 2025 CY - Berlin, Germany DA - 17.09.2025 KW - Reference materials KW - Certified reference materials KW - Digital zertificates KW - QI-Digital PY - 2025 AN - OPUS4-64148 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Asadujjaman, Asad T1 - Switching of nanoparticles' fluorescence between "ON" and "OFF" states by a thermoresponsive polymeric layer N2 - Fluorescent nanoparticles that “light up”/”dim down” by applying external stimuli are of particular interest in the fields of sensing, diagnostics, photonics, protective coatings and microfluidics. The current challenge for these materials is to combine for instance fluorescence and its response to a stimulus such as temperature in a precise manner. Here we present such a system based on a core/shell/shell architecture consisting of a silica core with a fluorescent layer and a thermoresponsive shell. The silica core nanoparticles were first coated with a fluorescent shell using surface initiated reversible addition-fragmentation chain transfer (RAFT) polymerization. The fluorescent nanoparticles were then completely engulfed by a switchable protective coating made of thermoresponsive poly(N-isopropylacrylamide). The fluorescence of the nanoparticles could be “switched on” at room temperature and “switched off” with increasing environmental temperature because of the presence of the thermoresponsive layer. Insights into this phenomenon will be given based on temperature dependent fluorescence measurements and dynamic light scattering. T2 - Hybrid materials Konferenz CY - Lisbon, Portugal DA - 06.03.2017 KW - Core/shell/shell KW - Thermoresponsive polymers KW - Fluorescence materials PY - 2017 AN - OPUS4-39581 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prabhakara, Prathik T1 - Ein synergistischer Ansatz zur Charakterisierung anisotroper Materialien mit Hilfe von Ultraschall und Mikrostrukturanalyse N2 - Es wird eine Studie zur Charakterisierung eines anisotropen Stahls vorgestellt, bei der Ultraschalluntersuchungen mit Mikrostrukturanalysen verbunden werden. Das Material weist hohe Festigkeit und Korrosionsbeständigkeit auf, zugleich ist mit anisotropen Eigenschaften die mechanischen und betrieblichen Eigenschaften beeinflussen zu rechnen. Vorläufige Ergebnisse lassen vermuten, dass weitere Untersuchungen notwendig sind, um die Fähigkeiten und Grenzen des Materials genau zu bestimmen. Es wird ein systematischer Ansatz mit Array- Prüfköpfen, Time-of-Flight Diffraction (TOFD) Technik und mikrostrukturellen Untersuchungen angewendet, um die Wechselwirkung zwischen Anisotropie und Mikrostruktur des Stahls zu analysieren. Ultraschallprüfungen mit der TOFD-Technik und in Tauchtechnik liefern Einblicke in das anisotrope Verhalten des Werkstoffes, einschließlich entsprechenden Kornorientierung, Dämpfung und Schallgeschwindigkeitsvariation. Diese Messungen führen in Verbindung mit mikrostrukturellen Analysen zu einem tieferen Verständnis des Materialverhaltens. Unser Hauptziel ist es, ein Framework zu erstellen, welches die Ultraschallantwort anisotroper Materialien mit ihren mikroskopischen Struktureigenschaften verbindet. Die vorgestellte Methodik ermöglicht eine zerstörungsfreie und zügige Bewertung der Materialintegrität, was besonders bei der Anwendung von Hochleistungsmaterialien relevant ist. Durch diesen integrativen Ansatz werden verschiedener Charakterisierungsmethoden kombiniert, um ein umfassenderes Materialverständnis zu erreichen. T2 - DGZfP-Jahrestagung 2024 CY - Osnabrück, Germany DA - 06.05.2024 KW - Ultrasonic Testing KW - Time-offlight Diffraction (TOFD) KW - Microstructure Analysis KW - Non-Destructive Testing PY - 2024 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-600122 UR - https://www.ndt.net/?id=29535 AN - OPUS4-60012 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thümmler, Bodhi T1 - The Iron Quest: Unraveling Distribution and Bioavailability in Biofortified Vegetables N2 - Insufficient absorption of nutritional iron is the cause of the most prevalent dietary micronutrient deficiency in the world. Dietary iron deficiency disproportionally affects women and is the most common origin of anaemia (iron deficiency anaemia) globally. This underlines the requirement of dietary iron for the human body, which ranges between 11–27 mg(Fe) per day for adults depending on sex, pregnancy, and nursing status. In Germany, consumers have easy access to ferrous or ferric supplements or iron-fortified foods. However, iron-biofortified food products are not yet available and only 18 % of German consumers are familiar with the label “biofortified food” [1]. Hence, the BMBF-funded research project EiBiG was launched, aiming at establishing plant cultivation methods that raise plant iron content through foliar iron fertilization and increase the iron bioavailability in vitamin C-rich vegetables (e.g., baby-leaf spinach and bell pepper). Iron bioavailability will be studied using combined in vitro digestion/Caco-2 cell culture models [2]. Furthermore, to investigate foliar iron absorption mechanisms, the spatial iron distribution in biofortified & non-biofortified baby-leaf spinach is investigated using Laser Induced Breakdown Spectroscopy (LIBS), μXRF, & LA-ICP-MS. T2 - 38th Annual GMS Meeting CY - Munich, Germany DA - 24.10.2024 KW - Bioavailability KW - Iron KW - Spinach KW - Biofortified Food PY - 2024 AN - OPUS4-61486 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Röhr, Holger T1 - Tuning of the Highly Fluorescent Boron-Diindomethene (BDI) Chromophore Toward a Na+-Selective "Light-up" Probe that Emits in the Red T2 - XX IUPAC Symposium on Photochemistry CY - Granada, Spain DA - 2004-07-17 PY - 2004 AN - OPUS4-10944 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noordmann, J. T1 - Gravimetric preparation and characterization of a primary reference solution of molybdenum T2 - ANAKON 2015 CY - Graz, Austria DA - 2015-03-23 PY - 2015 AN - OPUS4-32866 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bell, Jérémy T1 - Sugar detection in sodas utilizing a fluorescent microfluidics sensor N2 - Because of the globally increasing prevalence of diabetes, the need for accurate, efficient and at best miniaturized automated analytical systems for sugar detection is still urgent. The development of molecular probes for sugar based on boronic acid receptors1 offers an excellent alternative to the kinetically slow enzyme-based sugar sensors. Moreover, by coupling such chelating units with rhodamines, fluorescein or BODIPY moieties, colorimetric and/or highly fluorescent sugar sensing schemes can be obtained.2 In this work, a boronic acid-functionalized BODIPY probe is described; it binds selectivity to fructose's adjacent diols to form cyclic boronate esters in partially aqueous solutions, with a broad pH range compatibility and a sensitivity in the micromolar range. To enhance the applicability of the fluorometric test in the sense described above, integration with a microfluidic sensor was achieved. The miniaturization of chemical analysis systems yields many functional and economical benefits such as low cost, ease of use, high stability and good portability. With similar selectivity and sensitivity, fructose was detected by fluorescence in real time in the chip, and an assay for the straightforward detection of sugar in sodas was achieved. T2 - IMA 2015 CY - Kalamata, Grece DA - 2015-09-20 PY - 2015 AN - OPUS4-34776 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Soba, L. A1 - Tuma, Dirk T1 - Messung der Schallgeschwindigkeit in Neopentan bei Temperaturen von (263 bis 373) K und Drücken bis 20 MPa N2 - Alkan-Isomere haben signifikanten Einfluss als Spurenstoffe auf thermodynamische Eigenschaften von Erdgasgemischen. In Erdgas sind bis zu 0.35 mol-% Neopentan enthalten. Gemischmodelle basieren auf Reinstoffzustandsgleichungen der beteiligten Komponenten. Die hier untersuchte Schallgeschwindigkeit ist von besonderer Bedeutung für die Entwicklung hochgenauer Gleichungen. T2 - Thermodynamik-Kolloquium 2025 CY - Hamburg, Germany DA - 22.09.2025 KW - Neopentan KW - Schallgeschwindigkeit KW - Zustandsgleichung PY - 2025 AN - OPUS4-64226 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bolz, Axel T1 - Microfluidic paper strips for SERS analysis N2 - Surface enhanced Raman scattering (SERS) is a fast and sensitive spectroscopic method for the identification of analytes. With available portable Raman spectrometers, on-site analysis is possible. However, for on-site analysis, SERS substrates, which are cheap, easy to prepare, and simple in sample handling are necessary. Relevant analytes in the addressable concentration region for SERS are e.g. antibiotics and pesticides. Here, we present paper-based test strips for SERS analysis which are coated with silver nanoparticles. The coating was realized with different deposition methods of nanoparticle solutions. The papers were also functionalised with hydrophobic barriers to create μPADs. The strips were tested with selected analytes (e.g., adenine, rhodamine-6G) over a broad concentration range. The focus of our study lay on reproducibility and optimum SERS signal intensity. For the quantification of analytes, highly reproducible signal intensities are necessary. We have realized this reproducibility in acceptable quality. Moreover, employing intensity vs concentration calibration for the analytes, data analysis revealed a behaviour that was best described by a Langmuir isotherm, stressing the strong distance dependence of the SERS effect. For a fast and reproducible analysis of the data, a Labview program was finally compiled, which was fed with the calibration data and derived the concentration of analyte unknowns accordingly. T2 - 5. Berliner Chemie Symposium & 1. Chemie in Praxis CY - Berlin, Germany DA - 12.04.2016 KW - SERS KW - Raman KW - Paper PY - 2016 AN - OPUS4-36031 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eggert, Lara T1 - Offshore-Reparaturbeschichtungen mit Chloridvorbelastung N2 - Bei maritimen Reparaturbeschichtungen ist eine chloridfreie Oberfläche nicht immer zu gewährleisten. Zur Untersuchung des Einflusses chloridhaltiger Verunreinigungen auf die Schutzwirkung maritimer Epoxid-Reparaturbeschichtungen wurden gestrahlte Stahlproben (Sa 2½) mit künstlichem Meerwasser besprüht. So entstanden drei Verunreinigungszustände: sauber (C0), leicht verunreinigt (C1) und stark verunreinigt (C2). Zwei Beschichtungen (A1 und A2) wurden appliziert und durch Ritzen und Impact-Schäden zusätzlich beansprucht. T2 - H2Mare-Abschlusskonferenz CY - Rostock, Germany DA - 23.09.2025 KW - Reperaturbeschichtung KW - Maritime Korrosion KW - Wechselzyklustest PY - 2025 AN - OPUS4-64235 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zekhnini, Khalid T1 - Constructive corrosion protection - Stainless steel in offshore plant construction N2 - Maritime exposure poses particular challenges for corrosion protection in plant construction. In addition to the right choice of materials, special design features that can have an impact on corrosion resistance must also be taken into account to ensure long-lasting corrosion protection. In practice, structural crevice arrangements are unavoidable, and therefore the crevice corrosion resistances of stainless steels are of particular importance. These and other influences are being investigated in this joint project. T2 - H2Mare PtX-Verbundtreffen CY - Hamburg, Germany DA - 16.04.2024 KW - Atmospheric Corrosion KW - Offshore KW - Corrosion Testing KW - Marine Corrosion KW - Stainless steel KW - Crevice corrosion PY - 2024 AN - OPUS4-59918 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schröpfer, Dirk A1 - Kromm, Arne T1 - Are residual stresses influenced by a mill scale? - Welding Residual Stresses in Quenched and Tempered and Thermo-Mechanically Hot Rolled High Strength Steels T2 - 9th European Conference on Residual Stresses CY - Troyes, France DA - 2014-07-07 PY - 2014 AN - OPUS4-31031 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reuter, T. T1 - Measurement-based Detector Characteristics for Digital Twins in aRTist 2 N2 - Various software products for the simulation of industrial X-ray radiography have been developed in recent years (e.g., aRTist 2, CIVA CT, Scorpius XLab, SimCT, Wilcore) and their application potential has been shown in numerous works. However, full systematic approaches to characterise a specific CT system for these simulation software products to obtain a truthful digital twin are still missing. In this contribution, we want to present two approaches to obtain realistic grey values in X-ray projections in aRTist 2 simulations based on measured projections. In aRTist 2, the displayed grey value of a pixel is based on the energy density incident on that pixel. The energy density is calculated based on the X-ray tube spectrum, the attenuation between source and detector as well as an energy-dependent sensitivity curve of the detector. The first approach presented in this contribution uses the sensitivity curve as a free modelling parameter. We measured the signal response at different thicknesses of Al EN-AW6082 at different tube voltages (i.e., different tube spectra). We then regarded the grey values displayed by these projections as a data regression respectively an optimisation problem and obtained the sensitivity curve that is best able to reproduce the measured behaviour in aRTist 2. The resulting sensitivity curve does not necessarily hold physical meaning but is able to simulate the real system behaviour in the simulation software. The second approach presented in this contribution is to estimate the sensitivity curve based on assumptions about the characteristics of the scintillation detector (e.g., scintillator material, scintillator thickness and signal processing characteristics). For this approach, a linear response function (linear relationship between the deposited energy per pixel and the resulting grey value) is assumed. If the detector characteristics, which affect the simulated deposited energy, are properly modelled, the slope and offset of the response function to match the measured grey values should be the same for different tube spectra. As the offset is constant and given by the grey values measured at no incident radiation, the slope is the remaining parameter to evaluate the success of the detector modelling. We therefore adapted the detector characteristics by changing the detector setup until the slope was nearly the same for all measured tube spectra. We are aware that the resulting parameters of the scintillator material and thickness might not be the real ones, but with those modelling parameters we are able to simulate realistic grey values in aRTist 2. Both of those approaches could potentially be a step forward to a full systematic approach for a digital twin of a real CT system in aRTist 2. T2 - 20th World Conference on Non-Destructive Testing (WCNDT 2024) CY - Incheon, South Korea DA - 27.05.2024 KW - Computed Tomography KW - Digital Twin KW - Simulation PY - 2024 AN - OPUS4-61776 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Maike T1 - Vertification of a theoretical model for quantitative analysis with laser induced plasma spectroscopy (LIPS) T2 - Anakon 2007 CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-16482 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulte, Franziska T1 - Characterization and Identification of Pollen by Raman Spectroscopy T2 - ANAKON CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-19208 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gopala, Anil T1 - Mass spectrometry study of volatile impurities evolved during vacuum distillation of zinc T2 - European Winter Conference on Plasma Spectrochemistry CY - Graz, Austria DA - 2009-02-15 PY - 2009 AN - OPUS4-19010 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nietzold, Carolin T1 - Synchrotron-XPS and -NEXAFS studies of epoxy surfaces used for production of carbohydrate microarrays T2 - Advances in Microarray Technology CY - Berlin, Germany DA - 2014-03-10 PY - 2014 AN - OPUS4-30590 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Holger T1 - Behandlung von Klärwerkswasserproben zur Reduktion von Matrixeffekten bei der Quantifizierung von Sulfamethoxazol mittels Immunoassay (ELISA) N2 - N-Acetyl-SMX, der Kreuzreaktand mit der bisher höchsten bekannten Kreuzreaktivität in diesem SMX-ELISA, kann durch saure Behandlung entfernt werden. Durch Verdünnung der Probe kann die Überbestimmung reduziert werden, besonders für Proben mit hoher Interferenzbelastung (Matrix). T2 - Jahrestagung der Wasserchemischen Gesellschaft CY - Bamberg, Deutschland DA - 02.05.2016 KW - Überbestimmung KW - ELISA KW - Matrixreduktion PY - 2016 AN - OPUS4-35935 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogel, Christian T1 - Per- and polyfluoroalkyl substances (PFAS) in ski waxes and snow from cross-country skiing in Germany - Comparative study of target analysis and sum parameters N2 - Per- and polyfluoroalkyl substances (PFAS) can enter the environment in different ways. Possible sources are PFAS containing consumer products. One common product that makes use of the material properties of PFAS is ski wax. Here, the PFAS ensure less frictional resistance, thus allows for increased speed. However, people who wax their ski with these waxes could absorb PFAS in their body, which can lead to health problems in the long term. Moreover, PFAS applied in ski wax abrade onto snow during use, which contaminates the environment. In our study, we analyzed various currently available ski waxes (2020s) and ski waxes from the 1980s with PFAS target analysis and with the sum parameters extractable organically bound fluorine (EOF), hydrolysable organically bound fluorine (HOF) and total fluorine (TF). Moreover, snow samples from the long-distance cross-country ski trail “Kammloipe” in the Ore mountains in Germany where sampled and analyzed with PFAS target analysis and the adsorbable organically bound fluorine (AOF) sum parameter to document the entry of PFAS from ski waxes into the environment. In opposite to the ski waxes from the 1980s much more ski waxes from the 2020s contain high (total) fluorine values. The highly fluorinated ski waxes contain up to approx. 6% of fluorine. The EOF and HOF sum parameters of the ski waxes are strongly decreased in comparison to the TF values (max. approx. 1000 mg/kg = 0.1%). But even the PFAS-free labeled ski waxes have EOF/HOF values in the low mg/kg range. In the snow samples from different spots of the ski trail, both the AOF sum parameter and the PFAS target analysis identified PFAS. Moreover, on a PFAS hotspot also soil samples were analyzed, which indicate that PFAS from the ski waxes adsorb after snow melting into the soil. Thus, our results show that the use of ski waxes is a possible contribution to the environmental contamination of PFAS, which is hopefully drastically reduced with the ban on fluorinated waxes by the International Ski and Snowboard Federation (FIS). T2 - SETAC Europe CY - Vienna, Austria DA - 11.05.2025 KW - Per- and polyfluoroalkyl substances (PFAS) KW - Contaminated Soil KW - Ski wax PY - 2025 AN - OPUS4-63096 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Röllig, Mathias T1 - Thermografie zur Vergleichbarkeit von Emissionsmessung im 3D-Druck N2 - Die Bedeutung der Extrudertemperatur bei kleinen Desktop 3D Druckern der Fused Filament Fabrication (FFF) Technologie auf die Emission von ultrafeinen Partikeln im Druckbetrieb ist nicht zu unterschätzen. Allerdings zeigen kommerzielle 3D Drucker häufig eine systematische Temperaturabweichung zum Sollwert, d.h. die eingestellte Temperatur weicht von der tatsächlichen Temperatur ab. Da die Partikelemission meist temperaturabhängig ist, ist eine genaue Messung der tatsächlichen Extrudertemperatur für den Vergleich von Emissionsdaten aus unterschiedlichen Druckermodellen relevant. T2 - DGZfP Jahrestagung 2025 CY - Berin, Germany DA - 26.05.2025 KW - Thermografie KW - Fused Filament Fabrication (FFF) KW - Ultrafeine Partikel KW - Extrudertemperatur KW - Temperaturmessung PY - 2025 AN - OPUS4-63328 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogel, Christian T1 - Diffusive Gradients in Thin-films (DGT) technique as screening tool for per- and polyfluoroalkyl substances (PFAS) contamination in wastewater-based fertilizers N2 - Per- and polyfluoroalkyl substances (PFAS) are a large group of organofluorine surfactants used in the formulations of thousands of consumer goods, including aqueous film-forming foams (AFFF) used to suppress aviation fires in training scenarios, non-stick cookware, fast-food wrappers, water-repellent fabrics, medical equipment, and plastic and leather products. As a result of the perpetual use of PFAS containing products, effluents and sewage sludge from wastewater treatment plants (WWTPs) have been observed to be an important pathway for PFAS into the environment. In Germany, phosphorus and other nutrients from sewage sludge and wastewater should be recycled in WWTPs of cities with a large population. However, it is not clear if PFAS contamination from wastewater and sewage sludge end up in novel wastewater-based fertilizers. Normally, PFAS are analyzed using PFAS protocols typically with time-consuming extraction steps and LC-MS-MS quantification. However, for screening of PFAS contaminations in sewage sludge or wastewater-based fertilizers also passive sampler based on the Diffusive Gradients in Thin-films (DGT) technique can be used for the PFAS extraction. Afterwards, combustion ion chromatography (CIC) can be applied to analyse the “total” amount of PFAS on the passive sampler. Here, we show results from the DGT method in comparison to those of the extractable organic fluorine (EOF) method for a variety of wastewater-based fertilizers. Additionally, we analysed the adsorption of PFAS on the weak anion exchanger (WAX) based DGT passive sampler binding layer by infrared and fluorine K-edge X-ray adsorption near-edge structure (XANES) spectroscopy. T2 - SETAC Europe 2022 CY - Copenhagen, Denmark DA - 15.05.2022 KW - Passive sampling KW - Per- and Polyfluoroalkyl substances (PFAS) KW - Sewage sludge KW - Wastewater PY - 2022 AN - OPUS4-54883 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - Soil water investigations based on laboratory tests N2 - The determination of the pollutant transfer from the soil with leachate into the groundwater is of fundamental importance for the assessment of the risk potential posed by contaminated sites. Following the German Federal Soil Protection and Contaminated Sites Ordinance (BBodSchV) the leachate forecast is allowed to perform among others on the basis of material testing in the laboratory (elution) or in-situ investigations in the transition area from the unsaturated to the water saturated zone (place of assessment). In this study the leaching behaviour of PAH through two lysimeters in laboratory scale was monitored under unsaturated conditions using a PAH contaminated soil from a former tar works site. The glass columns (30 cm in diameter) containing about 30 kg of contaminated soil were irrigated weekly with 300 ml of water. PAHs, pH value, DOC, turbidity, conductivity were determined for periodically taken eluates. The different leaching behaviour of the various PAHs will be presented by examples on the poster. After relatively high initial leachate loads of high-water-solubility PAHs the release adjusts relatively quickly to a constant low level. Released concentrations decrease with increasing molecular size. The results indicate a low availability of the studied contaminants after 270 days since only a minor fraction of the initial amount of PAHs was released from the soil during the experiment. This method seems to be reliable of providing data on leachate amounts of PAHs under field-like conditions over a long period of time. T2 - Eurosoil 2004 CY - Freiburg, Germany DA - 2004-09-04 PY - 2004 AN - OPUS4-4500 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Examination of volatile organic compounds (VOC) in contaminated soil N2 - Volatile organic compounds (VOC) were investigated at a dry-cleaning facility of a former military site in Germany. VOCs have leaked into the unsaturated soil zone consisting of sandy aggragated material and fine to medium sand. The groundwater table is located at 1.50 to 2.00 m. The following investigations were performed: ·Soil sampling using an open window sampler, layer specific determination of VOC in the soil using gas chromatography after the following sample preparation procedure - extraction with methanole - extraction with pentane - multiple headspace extraction (MHE) [1] ·Soil gas measurements, sampling using concentrating steps [2] The various extraction procedures for VOC analysis in soil have yielded different results. The results will be discussed with an emphasis on risk assessment, and recommendations for the procedure will be presented. References [1 ] DIN EN ISO 10301: 08.97: Wasserbeschaffenheit - Bestimmung leichtflüchtiger halogenierter Kohlenwasserstoffe - Gaschromatographische Verfahren [2] VDI-Richtlinie 3865:06.98: Messen organischer Bodenverunreinigungen, Blatt 3: Gaschromatographische Bestimmung von niedrigsiedenden organischen Verbindungen in Bodenluft nach Anreicherung an Aktivkohle oder XAD-4 und Desorption mit organischen Lösungsmitteln T2 - Eurosoil 2004 CY - Freiburg, Germany DA - 2004-09-04 PY - 2004 AN - OPUS4-4501 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Influence of experimental boundary conditions on the release of PAHs during column perocolation tests T2 - EUROSOIL 2008 Soil-Society-Environmental CY - Vienna, Austria DA - 2008-08-25 PY - 2008 AN - OPUS4-17789 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - New developments in standardisation of leaching procedures in Germany T2 - EUROSOIL 2008 Soil-Society-Environment CY - Vienna, Austria DA - 2008-08-25 PY - 2008 N1 - Geburtsname von Sauer, Andreas: Buchholz, A. - Birth name of Sauer, Andreas: Buchholz, A. AN - OPUS4-17788 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Binner, Richard T1 - Parametrisation and visualisation of the pore structure of gradated soils via 3D image processing T2 - European Geosciences Union CY - Vienna, Austria DA - 2008-04-14 PY - 2008 AN - OPUS4-17508 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - A practical approach to estimation of uncertainty arising from sampling T2 - 10th International UFZ-Deltares CY - Milan, Italy DA - 2008-06-03 PY - 2008 AN - OPUS4-17941 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Column tests for studying leaching behaviour of PAHs in soil T2 - 9th International Conference on Soil-Water Systems, CONSOIL 2005 CY - Bordeaux, France DA - 2005-10-03 PY - 2005 AN - OPUS4-7409 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Kleinlysimeteruntersuchungen an Materialien aus dem Altlastenberich T2 - DBG Jahrestagung CY - Marburg, Germany DA - 2005-09-03 PY - 2005 AN - OPUS4-6933 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, K. J. T1 - Bedingungen suffosiver Erosionsphänomene in Böden T2 - 30. Baugrundtagung mit Fachausstellung Geotechnik, Veranstaltungszentrum Westfalenhallen CY - Dortmund, Germany DA - 2008-09-24 PY - 2008 AN - OPUS4-18544 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kaps, Charlotte T1 - PAH leaching behaviour is affected by soil bacterial populations T2 - 14th International Bioderterioration and Biodegradation Symposium CY - Taormina, Italy DA - 2008-10-06 PY - 2008 AN - OPUS4-18138 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - Validierung von Elutionsverfahren zur Charakterisierung der Quellstärke von Boden- und Abfallmaterialien T2 - Jahrestagung der Deutschen Bodenkundlichen Gesellschaft CY - Bonn, Germany DA - 2009-09-05 PY - 2009 N1 - Geburtsname von Sauer, Andreas: Buchholz, A. - Birth name of Sauer, Andreas: Buchholz, A. AN - OPUS4-19014 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Ermittlung des Anteils der Probenahme an der Ergebnisunsicherheit bei Bodenuntersuchungen T2 - Jahrestagung der Deutschen Gesellschaft CY - Bonn, Germany DA - 2009-09-05 PY - 2009 AN - OPUS4-18796 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lopez Meza, Sarynna T1 - Effect of flow-rate on contaminanat release and the potential impact of groundwater contamination: Methodology assessment T2 - 3rd European Conference on Natural Attenuation and In-Situ Remediation CY - Frankfurt am Main, Germany DA - 2007-11-19 PY - 2007 AN - OPUS4-16179 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Vergleich der Ergebnisse von Übereinstimmungstests bei Säulen- und Schüttelversuchen T2 - Jahrestagung der Deutschen Bodenkundlichen Gesellschaft CY - Berlin-Potsdam, Germany DA - 2011-09-03 PY - 2011 AN - OPUS4-24261 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Vergleichende Bewertung von Elutionsverfahren für die Beurteilung des Auslaugverhaltens organischer Stoffe aus Böden T2 - Jahrestagung der Deutschen Bodenkundlichen Gesellschaft "Böden - Lebensgrundlage und Verantwortung" CY - Rostock, Germany DA - 2013-09-09 PY - 2013 AN - OPUS4-29062 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - Säulenperkolationsversuche mit perfluorierten Tensiden und Bioziden in Böden T2 - Jahrestagung der Deutschen Bodenkundlichen Gesellschaft "Böden-Lebensgrundlage und Verantwortung" CY - Rostock, Germany DA - 2013-09-09 PY - 2013 AN - OPUS4-29416 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bandow, Nicole T1 - Determination of leaching behaviour of vanadium from masonry T2 - SETAC Europe CY - Basel, Switzerland DA - 2014-05-12 PY - 2014 AN - OPUS4-30763 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schatten, Rene A1 - Szuppa, Tony T1 - Monitoring von Bodenmaterialien zu Verwertungszwecken N2 - Auf den 7. Sächsisch-Thüringischen Bodenschutztagen wurden dem Fachpublikum die Ziele und erste Ergebnisse des laufenden UFOPLAN-Forschungsvorhabens „Monitoring zur Verwertung von Bodenmaterial“ vorgestellt. Ziel eines laufenden UFOPLAN-Vorhabens ist es, Datendefizite für Bodenmaterialien, die unter die neuen Kriterien der Verwertungsmöglichkeiten außerhalb der durchwurzelbaren Bodenschicht nach den §§ 6 bis 8 der Novelle der BBodSchV fallen, zu schließen und potenzielle Verwertungsmöglichkeiten aufzuzeigen. Neben den Feststoffwerten wird dabei das Elutionsverhalten zur Bewertung herangezogen. Durch die Umstellung des Elutionsverfahrens von einem W/F von 10 l/kg (bisherige Regelung in der LAGA M 20) auf ein W/F von 2 l/kg bestehen erhebliche Unsicherheiten im Hinblick auf die Einstufung von Bodenmaterialien zur Verwertung. T2 - 7. Sächsisch-Thüringische Bodenschutztage CY - Greiz, Germany DA - 21.06.2017 KW - Bodenmaterial KW - Elutionsverfahren KW - Mantelverordnung KW - Novelle Bundesbodenschutz- und Altlastenverordnung KW - PAK KW - Schwermetalle KW - Verwertung PY - 2017 AN - OPUS4-43419 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - Leaching of PFC from soils contaminated with PFC of different origin N2 - Leaching tests are fundamental tools for the assessment of groundwater impact by contaminated soils concerning the soil-groundwater pathway. Such procedures are supposed to serve as the basis for a reliable leachate prognosis. They can be applied to determine the short and long term leaching behaviour as well as the source term of contaminated soils. For this purpose two types of leaching procedures have been validated in Germany for the examination of the leaching behaviour of frequently occurring organic substances (DIN 19528 - column test and DIN 19529 - batch test). A liquid-to-solid ratio (L/S) of 2 L/kg and 10 L/kg) is the basis for the risk assessment which is implemented in different German regulations. The equivalence of test results for both tests for the same material under investigation has been investigated for a variety of pollutants in order to assess their reliability in compliance testing. However, for emerging pollutants there is hardly data available on this issue. Leaching tests on soils contaminated with emerging pollutants such as PFC (Perfluorinated Surfactants) are currently coming more into consideration due to the increasing detection of contaminated sites. Therefore, two soils were investigated in this study from different contamination source (paper sludge containing compost and fire distinguishing foam) using both leaching tests and both liquid-to-solid ratios. The leachability of the various perfluorinated compounds in relation to their content in solid matter was considered. Furthermore the eluate pre-treatment prior analysis (in particular liquid/solid separation step needed for batch tests) has been taken into account. The comparability of the results from batch and column is dependent on the solubility of the various compounds, on the L/S and on the turbidity in the eluates. T2 - EGU General Assembly 2017 CY - Vienna, Austria DA - 23.04.2017 KW - Soil KW - PFC KW - Leaching PY - 2017 AN - OPUS4-43000 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bandow, Nicole T1 - Leaching of brominated flame retardants - eluate analysis using XRF N2 - Brominated flame retardants have widely been used for more than 50 years and have been frequently detected in environmental samples as surface water and fish. Leaching from construction products was identified as one possible source. The use of substances as e.g. hexabromocyclododecane (HBCCD) was restricted recently due to increasing concern about negative impacts on the environment and human health caused by the persistent, bio accumulative and toxic properties. New polymeric brominated flame retardants have been developed to replace HBCCD in expanded polystyrene (XPS), which is used for insulation of buildings. It is assumed that the release from the polymer is much smaller in comparison to release of small molecules as HBCCD. The release from the polymer may include monomers or small fragments of different size. Thus, a sum parameter is needed. According to Schlummer et al. it is possible to detect brominated molecules using X-ray fluorescence spectroscopy by determination of brome content in XPS extracts. As only small brominated compounds can be extracted it also allows for the differentiation between the two classes of compounds. This method was applied to verify the presence of different kinds of flame retardants in XPS samples and to evaluate the leaching behavior. T2 - ESAS CANAS CY - Berlin, Germany DA - 21.03.2018 KW - Leaching KW - XPS KW - Flame-retardant KW - XRF PY - 2018 AN - OPUS4-44562 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Roesch, Philipp T1 - How to investigate potential emission sources of PFAS in consumer product materials? Comparative extraction approaches and sum parameter analysis by combustion ion chromatography (CIC) N2 - Besides classical per- and polyfluorinated alkylated substances (PFAS), side-chain fluorinated polymers (SFPs) are widely applied as efficient anti-wetting and anti-greasing coatings in various daily applicated consumer products such as outdoor apparel, carpetry or paper-based food contact materials. Although the fluorinated sidechains are chemically bound to a base polymer, their release can be triggered by environmental influences or wear-off, thus contribute as significant sources of PFAS in the environment. Since only little knowledge of PFAS and SFP composition in consumer products is available, a comprehensive analytical approach might be beneficial. T2 - SETAC Konferenz 2023 CY - Dublin, Ireland DA - 30.04.2023 KW - PFAS KW - Combustion Ion Chromatography KW - Comsumer good samples PY - 2023 AN - OPUS4-57422 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - Influence of flow rate and particle size distribution on leaching behaviour of crushed masonry using column tests T2 - 9th International Conference on the Environmental and Technical Implications of Construction with Alternative Materials, "WASCON 2015 - Resource Efficiency in Construction" CY - Santander, Spain DA - 2015-06-10 PY - 2015 AN - OPUS4-33668 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - Mobilität von Cadmium aus Farbpigmenten in klärschlammgedüngten Böden T2 - Jahrestagung der Deutschen Bodenkundlichen Gesellschaft 2015 CY - München, Deutschland DA - 2015-09-05 PY - 2015 AN - OPUS4-34361 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Validation of batch tests for the examination of leaching behaviour of organic pollutants from contaminated soils T2 - Eurosoil 2012 CY - Bari, Italy DA - 2012-07-02 PY - 2012 AN - OPUS4-26024 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - Column leaching tests on soils containing less investigated organic pollutants T2 - EUROSOIL 2012 CY - Bari, Italy DA - 2012-07-02 PY - 2012 N1 - Geburtsname von Riedel, Maren: Kolepki, M. - Birth name of Riedel, Maren: Kolepki, M. AN - OPUS4-26154 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Comparison of column and batch tests for assessing the leachability of soils contaminated with organic compounds T2 - 12th International UFZ-Deltares Conference on Groundwater-Soil-Systems and Water Resource Management CY - Barcelona, Spain DA - 2013-04-16 PY - 2013 AN - OPUS4-28273 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - Pollutant leaching from demolition waste T2 - 2nd International Workshop on Groundwater Risk Assessment at Contaminated Sites (GRACOS) and Integrated Soil and Water Protection (SOWA) CY - Tübingen, Germany DA - 2003-03-12 PY - 2003 AN - OPUS4-5459 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Untersuchungen zur Elution eines stark anthropogen belasteten Bodens T2 - Jahrestagung der Deutschen Bodenkundlichen Gesellschaft (DBG) CY - Frankfurt (Oder), Germany DA - 2003-09-01 PY - 2003 AN - OPUS4-5456 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - Probleme bei Bodenwasseruntersuchungen mit organischen Schadstoffen T2 - Jahrestagung der Deutschen Bodenkundlichen Gesellschaft (DBG) CY - Frankfurt (Oder), Germany DA - 2003-09-01 PY - 2003 N1 - Geburtsname von Riedel, Maren: Kolepki, M. - Birth name of Riedel, Maren: Kolepki, M. AN - OPUS4-5457 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Wolfgang T1 - Einfluss experimenteller Randbedingungen auf die Schadstoff-Freisetzung bei Säulenperkolationsversuchen T2 - Jahrestagung der Deutschen Bodenkundlichen Gesellschaft CY - Dresden, Germany DA - 2007-09-02 PY - 2007 AN - OPUS4-15745 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalbe, Ute T1 - Investigations into the suitability of suction cups for sampling of soil water containing organic contaminants T2 - Conference of the European Geosciences Union CY - Vienna, Austria DA - 2007-04-15 PY - 2007 N1 - Geburtsname von Riedel, Maren: Kolepki, M. - Birth name of Riedel, Maren: Kolepki, M. AN - OPUS4-14735 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Würck, Stefan T1 - Materialeigenschaften von Saugkerzen zur Bodenwasser-Probennahme T2 - XIII. Porotec-Workshop CY - Bad Soden, Germany DA - 2006-11-14 PY - 2006 AN - OPUS4-14011 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Oliver T1 - Comparison of colum and batch test eluates derived from PAH- and TPH-contaminated soils T2 - EMEC12 CY - Clermont-Ferrand, France DA - 2011-12-07 PY - 2011 AN - OPUS4-25587 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lehnik-Habrink, Petra T1 - Results of validation trials for new EU standards - Determination of PCDD/F, PCB and PAH in sludge, biowaste and soil T2 - Dioxin 2014 CY - Madrid, Spanien DA - 2014-08-31 PY - 2014 N1 - Geburtsname von Sauer, Andreas: Buchholz, A. - Birth name of Sauer, Andreas: Buchholz, A. AN - OPUS4-31843 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bandow, Nicole T1 - Establishment of calibration curves for investigation of municipal solid waste incineration bottom ashes using RFA T2 - CANAS 2015 CY - Leipzig, Germany DA - 2015-03-09 PY - 2015 AN - OPUS4-32726 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bandow, Nicole T1 - Freisetzung aus reaktiven Brandschutzbeschichtungen N2 - Reaktive Brandschutzbeschichtungen bilden im Brandfall zum Schutz der Stahlträger einen wärmeisolierenden Schaum. Die Systeme beinhalten üblicherweise eine Grundierung, die reaktive Beschichtung und einen Deckanstrich. Jeder Bestandteil enthält eine komplexe Mischung aus verschiedenen Chemikalien wie Additiven, Füllstoffen und Lösungsmitteln, die bei Außenanwendungen in Kontakt mit Regenwasser freigesetzt werden können und negative Auswirkungen auf die Umwelt haben können. Bisher basiert die Bewertung durch das DIBt lediglich auf der Rezeptur der Beschichtungen. Erfahrungen aus dem Bodenschutz oder der Abfallverwertung zeigen, dass Gesamtgehalte alleine für eine Bewertung nicht ausreichen. Die durch Wasser mobilisierbaren Anteile werden mit Elutionsverfahren bestimmt. Ziel der vorgestellten Studie war es, die Eignung von Elutionsverfahren in Kombination mit Ökotoxizitätstests zur Beurteilung der Umweltgefährdung zu untersuchen. T2 - Tagung Bauchemie CY - Weimar, Germany DA - 18.09.2017 KW - Leachingtest KW - Ökotozitätstest KW - Zink PY - 2017 AN - OPUS4-42013 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musyanovych, A. A1 - Grimmer, Christoph A1 - Sadak, A. E. A1 - Heßling, L. A1 - Bilsel, M. A1 - Horn, Wolfgang A1 - Richter, Matthias T1 - Polymeric Capsules with VOCs for Controlled Emission N2 - Micro-(nano-)encapsulation technology involves building of a barrier between the core and the environment and offers a number of benefits to preserve the functional and physicochemical properties of core material. Tremendous progress has been made in synthesizing well-defined capsules to achieve desired properties such as particle size, chemical composition, and controlled release of the payload. Encapsulation of volatile organic compounds (VOCs) that could evaporate with a defined rate is of immense interest for application in emission reference materials (ERM). These are urgently needed for quality assurance and quality control purposes (QA/QC) required by test standards for the determination of chemical emissions of construction and other materials for interior use. As such ERMs are hardly available on the market, the EU-funded EMPIR project MetrIAQ [1] was started to fill this gap by developing a material with temporally constant emission of VOCs typically found in indoor air. Different capsules in a size range between 5 and 50 μm were synthesized through an interfacial polyaddition/polycondensation reaction in direct (water-in-oil) system. As VOC several types of hydrophobic liquid materials were used. After synthesis, the morphology and physicochemical properties of capsules were characterized by electron microscopy, FTIR and DSC/TGA. An encapsulation efficiency up to 90% could be reached. The emission kinetic of volatile agents was studied in emission test chambers at 23 °C and 50% RH for 14 days. First results indicate that variation of the cross-linking grade of the shell material is one important parameter to adjust the desired emission rate. The overall aim is to achieve a consistent emission profile that decreases by less than 10 % over a target period of at least 14 days. T2 - 36th European Colloid & Interface Society Conference CY - Chania, Crete, Greece DA - 04.09.2022 KW - Capsules KW - Volatile organic compound KW - Polymer KW - Material emissions KW - Reference materials PY - 2022 AN - OPUS4-56039 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musyanovych, A. T1 - Polymeric Capsules with VOCs for Controlled Emission N2 - Micro-(nano-)encapsulation technology involves building a barrier between the core and the environment and offers several benefits to preserve the functional and physicochemical properties of core material. Tremendous progress has been made in synthesizing well-defined capsules to achieve desired properties such as particle size, chemical composition, and controlled release of loaded compounds. Encapsulation of volatile organic compounds (VOCs) that could evaporate with a defined rate is of immense interest for application in emission reference materials (ERM). These are urgently needed for quality assurance and quality control purposes (QA/QC) required by test standards for the determination of chemical emissions of construction and other materials for interior use. As such ERMs are hardly available on the market, the EU-funded EMPIR project MetrIAQ was started to fill this gap by developing a material with temporally constant emission of VOCs typically found in indoor air. T2 - 36th European Colloid & Interface Society Conference CY - Chania, Crete, Greece DA - 04.09.2022 KW - Capsules KW - Volatile organic compounds KW - Material emissions KW - QA/QC KW - Reference materials PY - 2022 AN - OPUS4-55917 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strzelczyk, Rebecca T1 - Zeolites loaded with VOCs as reference for material emissions testing N2 - Nowadays, people spend most of their time indoors. Thus, a good indoor air quality is important. Emissions of volatile organic compounds (VOCs) from furniture and building materials can cause health complaints1. Quantitative VOC-emission testing is carried out under standardized conditions in emission test chambers. In the presented project an emission reference material (ERM) is developed that emits a defined mixture of VOCs which is required for quality assurance and -control (QA/QC) measures. Porous materials (e.g zeolites, activated carbons, MOFs or aerogels) are used as reservoir materials and impregnated with VOC. The porous materials are selected, among others, by their pore size, pore size distribution, polarity and availability. Due to their regular pore structure zeolites are tested at first. For a prediction of the emission profile, the ERM is supposed to exhibit a constant emission rate over time. The aim is a stability of ≤ 10 % change in the emission rate over a minimum of 14 days. Method For impregnation, the material is placed into an autoclave inside a rotatable basket. The VOC is added and the autoclave is closed. Afterwards, CO2 is inserted. The closed system is then heated to the supercritical point of CO2 (31 °C, 73.75 bar). In this state, the CO2 acts as solvent for the VOC. By rotating the basket, the distribution of the VOC is ensured. After a few minutes, the pressure is decreased slowly and the CO2 is released. For the determination of the emission profile, the impregnated sample is placed into an emission test chamber. These chambers can be operated either with dry or humid air (50 ± 5 % rel. humidity). Every second to third day, air samples are taken and analyzed by gas chromatography. For an ideal impregnation, several different pressures and temperatures as well as impregnation times are tested. Results Two zeolite materials tested in dry air conditions reach emission profiles with a decrease of less than 10 % over 14 days (heptane and toluene, respectively). Further it was discovered that smaller pellets of the same zeolite show better results than bigger particles. When the pore size of a zeolite is too small, e.g. 0.3 nm, the VOC cannot be absorbed sufficiently. The main disadvantage of zeolites is their hygroscopicity because it has a large impact on the release of VOC when they are used in emission test chambers under standardized test conditions (23 °C, 50 % rel. humidity). Activated carbons have emission profiles with a larger change over 14 days. However, the high hydrophobicity allows measurements in humid air conditions which was not possible with the before mentioned hygroscopic zeolites. It is possible to impregnate powdered materials as well, and thus powdered non-hygroscopic (n.h.) zeolites were impregnated. Their emission profiles are comparable to those of the activated carbons. The use of methylated hygroscopic zeolites with a decrease in hygroscopicity did not yield successful emission measurements. The change over 14 days is calculated only for the stable phase (~250–300 h). The desired stability of ≤ 10 % change of the emission rate over 14 days could already be reached under dry testing conditions. Further investigations under humid conditions show that zeolites with high Si/Al-ratios are non-hygroscopic and comparable to activated carbons (20–30 % change). The next step is to reduce the change in the emission rate of these materials to the aimed ≤ 10 % over 14 days. T2 - Deutsche Zeolithtagung CY - Jena, Germany DA - 28.02.2024 KW - VOC KW - Emission KW - Quality assurance KW - Reference material KW - Zeolite PY - 2024 AN - OPUS4-59843 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Strzelczyk, Rebecca T1 - Constant emitting reference material for emissions test procedures N2 - Since nowadays people spend most of their time indoors, a healthy environment is essential. Volatile organic compounds (VOCs) emitted from furniture and building materials are reported to cause health complaints. Therefore, the usage of low emitting materials will improve the indoor air quality. Quantitative VOC emission testing is usually conducted in emission test chambers under specified controlled conditions as described in DIN 16000-9 and DIN EN 16516. For reasons of quality control/quality assurance (QC/QA) and for a better comparability of test results from different laboratories, suitable emission reference materials (ERM) are needed. Here, it is important to have a homogenous material with known emission rates over a specific time. Different approaches can be found in literature, inter alia polymer films loaded with the target compound to be released again, or a lacquer material to which a VOC mixture is added. After curing of the lacquer, the material can be loaded into a test chamber. Drawback of those approaches are their relatively fast decreasing emission profiles. For QC/QA purposes according to the test standards, VOC sources with constant emission profiles are desirable. The EU-funded research project MetrIAQ “Metrology for the determination of emissions of dangerous substances from building materials into indoor air” is working on a multi-component ERM with an envisaged instability of ≤ 10 % in the emission rate over at least 14 days. Within a doctoral thesis porous materials are impregnated with VOCs. Supercritical CO2 is used as solvent. Thus, the impregnated material does not contain any solvent that may show a measurable amount of emission in the emission test chamber. Furthermore, CO2 has the benefits to have a good availability and low costs. For the selection of porous materials several properties like the pore size, the surface, and the interaction with the components in the atmosphere need to be considered. The impregnation method is optimised while the different porous materials are tested. For the selection of porous materials the pores need to be large enough for the VOC molecules, further influence of the pore size is tested. T2 - Healthy Buildings CY - Aachen, Germany DA - 11.06.2023 KW - VOC KW - Emission KW - Quality assurance KW - Reference material PY - 2023 AN - OPUS4-59842 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang A1 - Richter, Matthias A1 - Wilke, Olaf T1 - Volatile organic compounds from building products - Results from seven proficiency tests with emission test chambers conducted between 2008 and 2021 N2 - Emission testing of volatile organic compounds (VOC) from materials and products is commonly based on emission test chamber measurements. To ensure the comparability of results from different testing laboratories their measurement performance must be verified. For this purpose, Bundesanstalt für Materialforschung und -prüfung (BAM) organizes an international proficiency test every two years using well-characterised test materials (one sealant, one furniture board and four times a lacquer) with defined VOC emissions. The materials fulfilled the requirements of homogeneity, reproducibility, and stability. Altogether, 41 VOCs were included of which 37 gave test chamber air concentrations between 10 and 98 µg/m³. This is the typical concentration range to be expected and to be quantified when performing chamber tests. Four compounds had higher concentrations between 250 and 1105 µg/m³. The relative standard deviations (RSD) of BAM proficiency tests since 2008 are compared and the improvement of the comparability of the emission chamber testing is shown by the decrease of the mean RSD down to 23% in 2021. In contrast, the first large European interlaboratory comparison in 1999 showed a mean RSD of 51%. T2 - Proficiency Testing in Analytical Chemistry, Microbiology and Laboratory Medicine CY - Windsor, United Kingdom DA - 25.09.2023 KW - Proficiency Test KW - VOC-Emission KW - Chamber-test PY - 2023 AN - OPUS4-59694 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmidt, Dirk T1 - Einfluss von Rohrleitungsverzweigungen auf die Wirksamkeit von Deflagrationsrohrsicherungen N2 - Die Ergebnisse der experimentellen Untersuchungen zeigen einen deutlichen Einfluss der Rohrleitungsverzweigungen auf die ablaufenden Deflagrationen (Explosionsdruck und Flammenausbreitungsgeschwindigkeit) in der Rohrleitung. Eine erste numerische Simulation der beobachteten Abläufe in der Verzweigung, zeigt bereits eine rechte gute Übereinstimmung mit den experimentellen Daten. T2 - 14. Kolloquium zur chemischen und physikalischen Sicherheitstechnik (BAM-PTB-Kolloquium) CY - Berlin, Germany DA - 14.06.2016 KW - Deflagrationsrohrsicherungen KW - Verzweigte Rohrleitungen PY - 2016 AN - OPUS4-37175 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Babutzka, Martin T1 - Korrosionsuntersuchungen mit gelartigen Elektrolyten T2 - Jahrestagung 2015 der GfKORR CY - Frankfurt/Main DA - 2015-11-03 PY - 2015 AN - OPUS4-34730 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hussels, Maria-Teresa T1 - Distributed acoustic fibre-optic sensors for condition monitoring of pipelines N2 - Industrial piping systems are particularly relevant to public safety and the continuous availability of infrastructure. However, condition monitoring systems based on many discrete sensors are generally not well-suited for widespread piping systems due to considerable installation effort, while use of distributed fibre-optic sensors would reduce this effort to a minimum. Specifically distributed acoustic sensing (DAS) is employed for detection of third-party threats and leaks in oil and gas pipelines in recent years and can in principle also be applied to industrial plants. Further possible detection routes amenable by DAS that could identify damage prior to emission of medium are subject of a current project at BAM, which aims at qualifying distributed fibre optic methods such as DAS as a means for spatially continuous monitoring of industrial piping systems. Here, first tests on a short pipe are presented, where optical fibres were applied directly to the surface. An artificial signal was used to define suitable parameters of the measurement system and compare different ways of applying the sensor. T2 - Sixth European Workshop on Optical Fibre Sensors CY - Limerick, Ireland DA - 31.05.2016 KW - fibre-optic condition monitoring KW - distributed acoustic sensing (DAS) KW - pipeline monitoring KW - sensor application PY - 2016 AN - OPUS4-37236 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scheuerlein, T1 - Mechanical properties of the HL-LHC 11 Tesla Nb3Sn magnet constituent materials N2 - A test campaign was launched to determine the mechanical properties of the HL-LHC 11 T Nb3Sn magnet components in order to accurately model the mechanical properties in Finite Element simulations that predict the stress and strain distribution in These magnets. Static and dynamic test methods have been applied for determining elastic materials behavior, and highly accurate Young’s moduli are obtained with the dynamic methods resonance and impulse excitation. These non-destructive methods also enable temperature dependent modulus measurements during in situ heat cycles. T2 - Applied Superconductivity Conference CY - Denver, Colorado, USA DA - 04.09.2016 KW - Young's modulus KW - Tensile test KW - Resonanz KW - Impact excitation PY - 2016 AN - OPUS4-37414 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hussels, Maria-Teresa T1 - AGIFAMOR – Ageing infrastructures – Faseroptisches Monitoring von Rohrleitungen N2 - In Hinblick auf die Detektion von akustischen Signalen und Vibrationen an und in Rohrleitungen mittels verteilter faseroptischer Sensorik steht die Entwicklung einer Applikationsmethode im Fokus, die eine optimale Signalübertragung auf die faseroptischen Sensoren unter realen Bedingungen gewährleistet. Ein weiterer Schwerpunkt ist auch die Datenerfassung und Analyse. Hierzu gehören eine Sensitivitätsanalyse des gesamten Messsystems und die Ermittlung und Klassifizierung der Schallsignaturen spezifischer Schadensbilder. Aufgebaut wird dabei auf Erfahrungen aus Schallemissionsmessungen an Werkstoffproben und Bauteilen zum Nachweis von aktiven Schädigungsprozessen (z.B. Risswachstum) oder passiven Schädigungen (z.B. Muldenkorrosion in durchströmten Leitungen). T2 - 1. Workshop im Themenfeldprojekt AGIFAMOR CY - Berlin, Germany DA - 01.03.2016 KW - Verteilte faseroptische Sensorik KW - Zustandsüberwachung von Rohrleitungen KW - Distributed acoustic sensing (DAS) PY - 2016 AN - OPUS4-35809 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Benjamin, Merz T1 - Advanced camera calibration for lens distortion correction in hybrid additive manufacturing processes N2 - Hybrid additive manufacturing is becoming increasingly important in the field of additive manufacturing. Hybrid approaches combine at least two different manufacturing processes. The focus of this work is the build-up of geometries onto conventionally manufactured parts using laser-based powder bed fusion of metals (PBF-LB/M). The hybrid build-up requires a precise position detection system inside the PBF-LB/M machines to determine the exact position of the existing component. For this purpose, high-resolution camera systems can be utilized. However, the use of a camera system is associated with several challenges. The captured images are subject to various distortions of the optical path. Due to these distortions, it is not possible to use the images for measurements and, therefore, it is not possible to calculate the positions of objects. In this study a homography matrix is calculated to correct keystone distortion in the images. Different calibration patterns have been tested for the calculation of the homography matrix. The influence of the number of calibration points on the precision of position detection of objects is determined. Furthermore, the influence of an additional camera calibration by using ChArUco boards is evaluated. The result is a camera calibration workflow with associated calibration pattern for a precise position detection of parts inside PBF-LB/M machines allowing a hybrid build-up with minimum physical offset between base component and build-up. T2 - euspen’s 24th International Conference & Exhibition CY - Dublin, Ireland DA - 10.06.2024 KW - Aditive Manufacturing KW - Hybrid build-up KW - Position detection KW - Camera calibration PY - 2024 AN - OPUS4-60600 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schröpfer, Dirk T1 - Analyses of Stresses due to Welding of High-strength Steel Components T2 - 5th IIW Welding Research and Collaboration Colloquium CY - Limburg, Germany DA - 2015-10-28 PY - 2015 AN - OPUS4-34832 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ebell, Gino T1 - Potentialfeldmessung Aus- und Weiterbildung an der BAM T2 - Ecostra 2012 CY - Freiburg, Germany DA - 2012-10-25 PY - 2012 AN - OPUS4-26871 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ebell, Gino T1 - Electrochemical Investigations of Carbon Based Conductive Coatings for Cathodic Protection of Steel Reinforcement T2 - EUROCORR 2013 CY - Estoril, Portugal DA - 2013-09-01 PY - 2013 AN - OPUS4-29032 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schaupp, Thomas T1 - Hydrogen distribution in multi-layer welds of steel S960QL N2 - High-strength low-alloyed (HSLA) steels with yield strength ≥ 690 MPa have increasing im-portance in steel construction and civil engineering. However, weld processing of those steels is a major challenge. The susceptibility for degradation of mechanical properties of weld joints sig-nificantly increases in presence of hydrogen and can result in hydrogen assisted cracking (HAC). Generally, risk for HAC increases with increasing yield strength of HSLA steels. To min-imize the incidence of HAC, it is essential to gain knowledge about both the (1) absorbed hydro-gen amount and its distribution in the weld seam and (2) options to lower the amount of intro-duced hydrogen. Existing standards recommend heat treatment procedures (interpass tempera-ture or post weld heat treatment) to reduce the diffusible hydrogen concentration in weldments. In this context, different weld seam geometries should be considered. For HSLA steel fabrication weld processing with seam opening angles of 45° to 60° is typical. Modern weld technologies allow welding with seam opening angles of 30° - reduced welding time and costs. In the present study, the hydrogen distribution in multi-layer welds of a 960 MPa HSLA steel was analysed. Influence of different seam opening angles as well as heat input, interpass temperature and post weld heat treatments were investigated. The welded samples were quenched in ice water imme-diately after welding and subsequently stored in liquid nitrogen. After defined warming up, small specimens were machined from the weld seam by water jet cutting. The diffusible hydrogen concentration was measured by carrier gas hot extraction with coupled mass spectrometer. The results showed, that low heat input and post weld heat treatment procedures can lower hydrogen concentrations in welds. Furthermore, a gradient of the hydrogen concentration was identified with increasing weld pool depth. By varying the seam opening angles different hydrogen concen-trations were measured. T2 - 3rd International Conference on Metals & Hydrogen CY - Ghent, Belgium DA - 29.05.2018 KW - Hydrogen KW - Welding KW - High-strength steels KW - Heat treatment KW - Carrier gas hot extraction PY - 2018 AN - OPUS4-45076 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thiel, Erik T1 - Crack detection in metal additive manufacturing with laser thermography N2 - BAM ensures and represents high standards for safety in technology and chemistry. Additive manufacturing (AM) changes the requirements for conventional non-destructive testing (NDT) as new processes of defect creation occur. Especially in safety critical areas, such as aerospace and automotive, new manufacturing processes and materials always require reliability tests and new standards which is a big challenge for NDT. T2 - Internationales Laser- und Fügesymposium CY - Dresden, Germany DA - 27.02.2018 KW - Laser Beam Melting KW - Laser Metal Deposition KW - Thermography KW - In-situ monitoring PY - 2018 AN - OPUS4-45619 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ferrero, Fabio T1 - Numerical Analysis of the Effect of the Electrode Distance during the Determination of the Flammability Limits of Gases T2 - COMSOL Conference 2011 CY - Ludwigsburg, Germany DA - 2011-10-26 PY - 2011 N1 - Geburtsname von Kluge, Martin: Beckmann-Kluge, M. - Birth name of Kluge, Martin: Beckmann-Kluge, M. AN - OPUS4-24626 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brauser, Stephan T1 - Thermal stability of retained austenite in low alloyed TRIP steel determined by high energy synchrotron diffraction T2 - Mecasens VI CY - Hamburg, Germany DA - 2011-09-07 PY - 2011 AN - OPUS4-24323 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. A1 - Bartholmai, Matthias T1 - Airborne Remote Gas Sensing and Mapping N2 - Leaking methane (CH4) from infrastructures, such as pipelines and landfills, is critical for the environment but can also pose a safety risk. To enable a fast detection and localization of These kind of leaks, we developed a novel robotic platform for aerial remote gas sensing - the so-called Unmanned Aerial Vehicle for Remote Gas Sensing (UAV-REGAS). T2 - Tag der offenen Tür auf dem Testgelände der BAM (BAM TTS) CY - Baruth/Mark - OT Horstwalde, Germany DA - 29.09.2018 KW - Localization of gas sources KW - Mobile Robot Olfaction KW - Tomographic reconstruction of gas plumes KW - Tunable Diode Laser Absorption Spectroscopy (TDLAS) KW - UAV-REGAS PY - 2018 AN - OPUS4-46152 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Habib, Abdel Karim T1 - Gasausbreitung bei Stofffreisetzung aus einer Lache T2 - ProcessNet Jahrestagung 2007 CY - Aachen, Germany DA - 2007-10-16 PY - 2007 AN - OPUS4-16045 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rehmer, Birgit T1 - Mikrostrukturelle Schädigungsbewertung von CMCs mit der Röntgenrefraktionsmethode T2 - Verbundwerkstoffe und Werkstoffverbunde CY - Bremen, Germany DA - 2007-02-14 PY - 2007 AN - OPUS4-14764 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rehmer, Birgit T1 - Effect of testing conditions on thermal shock resistance of advanced ceramics T2 - Materials Science and Engineering CY - Nuremberg, Germany DA - 2008-09-01 PY - 2008 AN - OPUS4-16497 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pulz, Robert T1 - Thermal shock behavior of ceramics at different ambient media T2 - Junior EuroMat 2008 CY - Lausanne, Switzerland DA - 2008-07-14 PY - 2008 AN - OPUS4-16498 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuchenbecker, Petra T1 - Investigation of the compression behaviour of green tapes T2 - 11. Conf. of the European Ceramic Soc. CY - Kraków, Poland DA - 2009-06-21 PY - 2009 AN - OPUS4-19692 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scheuerlein, C. T1 - Temperature induced degradation of Nb-Ti/Cu composite superconductors T2 - EUCAS 9th European Conference on Applied Superconductivity CY - Dresden, Germany DA - 2009-09-13 PY - 2009 AN - OPUS4-19843 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kromm, Arne T1 - Interaction of Phase Transformation and Residual Stresses during Welding Characterized by Synchrotron Diffraction T2 - Workshop VULCAN at the SNS: Scientific Opportunities, Industrial Applications and Challenges CY - Oak Ridge, TN, USA DA - 2010-01-21 PY - 2010 AN - OPUS4-20852 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ferrero, Fabio T1 - Study of the Explosive Decomposition of Tetrafluoroethylene in a Partially Heated Pipe T2 - 13th International Symposium on Loss Prevention 2010 CY - Bruges, Belgium DA - 2010-06-07 PY - 2010 N1 - Geburtsname von Kluge, Martin: Beckmann-Kluge, M. - Birth name of Kluge, Martin: Beckmann-Kluge, M. AN - OPUS4-21409 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scheuerlein, C. T1 - Mechanical properties of the HL-LHC 11 Tesla Nb3Sn magnet constituent materials N2 - A test campaign was launched to determine the mechanical properties of the HL-LHC 11 T Nb₃Sn magnet components in order to accurately model the mechanical properties in Finite Element simulations that predict the stress and strain distribution in these magnets. Static and dynamic test methods have been applied for determining elastic materials behavior, and highly accurate Young’s moduli are obtained with the dynamic methods resonance and impulse excitation. These non-destructive methods also enable temperature dependent modulus measurements during in situ heat cycles. T2 - Applied Superconductivity Conference CY - Denver, USA DA - 04.09.2016 KW - Young´s modulus KW - Tensile KW - Compression KW - Temperature dependence PY - 2016 AN - OPUS4-37922 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tschirschwitz, Rico T1 - Sicherheit in Technik und Chemie - Großversuche im Bereich Brand- und Explosionsschutz N2 - Das Poster enthält eine Beschreibung der umfangreichen Möglichkeiten, die die BAM mit ihrem TTS für Großversuche im Bereich Brand- und Explosionsschutz bereithält. T2 - Informationsveranstaltung mit Partnering-Workshop zum "Innovationsgropramm zur Unterstützung von Diversifizierungsstrategien von Unternehmen der Verteidigungsbranche in zivile Sicherheitstechnologien" im BMWi CY - Berlin, Germany DA - 26.06.2017 KW - Großversuche KW - Explosionsschutz KW - alternative Antriebe KW - alternative Kraftstoffe KW - Behälterversagen PY - 2017 AN - OPUS4-41163 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Golub, Tino T1 - Combined Quantification of Hydrogen in Natural Gas: A Comparative Study of Raman and NMR Spectroscopy N2 - Accurate hydrogen quantification in natural gas mixtures is essential for various industrial applications, necessitating fast, reliable, and cost-efficient measurement techniques. In this study, we explore the combined use of Raman spectroscopy and benchtop NMR spectroscopy to assess their effectiveness in determining hydrogen concentrations. A specialized system was developed to integrate both methods, allowing simultaneous analysis of identical gas samples. Measurements were performed using a series of gravimetrically prepared gas mixtures with hydrogen concentrations ranging from 1.20 cmol/mol to 85.83 cmol/mol. Raman spectroscopy demonstrated superior accuracy, achieving a low root mean square error (RMSE) of 0.22 cmol/mol with excellent linearity. By contrast, benchtop NMR spectroscopy faced technical limitations, such as signal overlap and slower processing times, resulting in a higher RMSE of 0.71 cmol/mol. Raman spectroscopy's precision and quick response make it an excellent choice for practical applications, while ongoing developments in NMR technology, particularly improvements in magnetic field strength, could enhance its performance in the future. This study highlights Raman spectroscopy as a robust tool for hydrogen quantification, while benchtop NMR shows potential for future innovation in this field. T2 - Anakon 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - NMR Spectroscopy KW - Raman Spectroscopy KW - Hydrogen quantification PY - 2025 AN - OPUS4-62722 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zekhnini, Khalid A1 - Seifert, Lando T1 - Aspects of corrosion protection in the maritime sector– Focus of Current research of BAM for H2Mare N2 - Germany has set itself the task of becoming a world leader in the field of green hydrogen technologies and is promoting the transition to a hydrogen economy. The H2Mare flagship project is exploring the offshore production of green hydrogen and other power-to-X products. One of the most important goals is the safe and cost-efficient operation of offshore infrastructures, where a service life of at least 25 years is aimed at. However, the corrosive environment towards metallic materials presents challenges in marine areas. The atmosphere at one location could be affected by the distance to the sea level and does not have the same corrosivity for all exposed kinds of materials. The research of the durabilitty of different materials and corrosion protection systems by weathering campaigns and laboratory experiments aims to close this gap of knowledge. BAM‘s mandate is to make the data available to the responsible operators through standardisation to ensure safety and cost efficiency. T2 - H2Mare Conference 2024 CY - Berlin, Germany DA - 06.06.2024 KW - Atmospheric Corrosion KW - Offshore KW - Wind energy KW - Marine Corrosion KW - Laboratory Container KW - Corrosion protecting system KW - Sediment KW - Green Hydrogen PY - 2024 AN - OPUS4-60225 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seifert, Lando T1 - Weathering campaigns for a marine corrosion atlas N2 - Germany has set itself the task to become a world leader in the field of green hydrogen technologies and is promoting the transition to a hydrogen economy. The H2Mare flagship project is exploring the offshore production of green hydrogen and other power-to-X products. One of the most important goals is the safe and cost-efficient operation of offshore infrastructures, where a service life of at least 25 years is aimed. However, the corrosive environment towards metallic materials presents challenges in marine areas. The atmosphere at one location could be affected by the distance to the sea level and does not have the same corrosivity for all exposed kinds of materials. The creation of an atmosphere corrosion atlas for marine environments by weathering campaigns aims to close this gap. Operators of offshore structures can use the data to estimate the corrosivity of the atmosphere on the construction site. This allows planning to be optimized in terms of platform safety as well as maintenance costs. T2 - Conference EUROCORR 2024 CY - Paris, France DA - 01.09.2024 KW - Offshore Corrosion KW - Marine Corrosion KW - Corrosivity KW - Green Hydrogen KW - Power-to-X PY - 2024 AN - OPUS4-60989 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schröpfer, Dirk T1 - Wear behavior of innovative niobium carbide cutting tools in ultrasonic-assisted finishing milling N2 - The resources of niobium exceed the ones of tungsten by an order of magnitude. With 92%, Brazil is today the main global producer of niobium. Hence, niobium carbides (NbC) are a sustainable and economic alternative to conventionally used cutting materials, especially tungsten carbides (WC). Moreover, NbC can be used in Ni alloy matrix and thus offer significant advantages by substituting WC in Co matrix as cutting materials in terms of health risks and raw material price and supply risk. Based on recent studies which found an increased performance of NbC compared to WC cutting tools in machining higher strength steels, the composition NbC12Ni4Mo4VC was chosen for finish machining of a high-strength steel S960QL in this study. The experiments were carried out on an ultrasonic-assisted 5-axis milling machine using NbC tools specially made to benchmark them with commercially available coated WC cutting inserts. In addition, the influence of a coating system for the NbC inserts is tested and evaluated for its performance in the cutting process. Tool wear and cutting force analyses are implied to identify optimal parameter combinations as well as tool properties for the novel NbC tool. Together with the oscillation of ultrasonic-assisted milling, the loads on the component surface and the tool can be reduced and the wear behavior of the novel NbC tool can be refined. These milling tests are accompanied by standardized wear tests, i.e., pin-on-disc, between the aforementioned material combinations, and the results are correlated with each other. Finally, the behavior when using hard-to-cut materials such as Ni alloys, or innovative materials such as iron aluminide is also being tested, as these are constantly in the focus of machining optimization. With this strategy, comprehensive knowledge is achievable for future efficient application of NbC for milling tools, which have already been researched for decades using WC. T2 - 24th International Conference on Wear of Materials CY - Banff, Canada DA - 16.04.2023 KW - Cutting tool KW - Niobium carbide KW - Tool wear KW - Ultrasonic-assisted milling PY - 2023 AN - OPUS4-59258 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Escobar-Carranza, Cristian C. T1 - On the Detection of Microplastics by Flowing Atmospheric-Pressure Afterglow Mass Spectrometry (FAPA-MS) N2 - Microplastics (MPs) are widespread pollutant particles that can be analyzed using Raman and FTIR spectroscopy combined with optical microscopy. Additionally, pyrolysis (Py) or thermal extraction and desorption (TED) coupled with gas chromatography-mass spectrometry (GC-MS) are used for the characterization of MPs.[1] However, sample throughput is limited due to GC separation. This work presents a feasibility study for the direct, rapid analysis of MPs using high-resolution mass spectrometry and a plasma-based ambient desorption/ionization source (FAPA, flowing atmospheric-pressure afterglow).[2] In earlier work, an in-house built ambient ionization source (modelled after the pin-to-capillary (p2c) FAPA design by Shelley et al. [3]) was coupled to HR-Orbitrap MS and used to characterize different MPs produced in-house from plastic materials including polystyrene (PS), polypropylene (PP), low-density polyethylene (LDPE), and polycarbonate (PC). Simultaneous detection of characteristic ions and particle imaging on a sampling mesh was feasible, with detection limits (LOD) for PS MPs at 311 µm in size and 1.3 mg in mass. Principal component analysis (PCA) was used for particle differentiation. This work presents an improved desorption/ionization approach using higher temperatures for desorption enhancement (approximately 500 °C, achieved with economical and commercially available parts) and a tailored source housing combined with a halo-shaped (h-FAPA) source configuration.[4] The scope was expanded to include MPs from poly(ethylene terephthalate) (PET), poly(methyl methacrylate) (PMMA), and poly(vinyl chloride) (PVC), sized 125–250 µm. Data visualization and interpretation were performed using Kendrick mass defect plots and other multivariate analysis tools. Compared to earlier results, h-FAPA-MS yielded at least 65% higher ion signals for selected ions in all MPs. These ions were detected mainly as protonated species [M+H]+. Higher thermal desorption temperatures aided in detecting all MPs, as the presence of higher molecular weight fragments added specificity to the analysis. Notably, experiments with the h-FAPA source demonstrated lower mass-based LODs for MPs than the p2c-FAPA source (e.g., 14 µg vs 1.3 mg for PS, respectively). T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Mass Spectrometry KW - Plasma KW - FAPA-MS KW - Microplastics PY - 2025 AN - OPUS4-63604 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schütz, Désirée A.-M. T1 - Feasibility Study on the Adsorption of Environmental Contaminants onto Fresh and Aged Microplastics N2 - Microplastics (MPs) refer to plastic particles, fibers, or beads with sizes ranging from 100 nm to 5 mm in size. Their pervasive distribution as environmental contaminants have escalated into a significant global concern. Primary MPs are intentionally produced particles for industrial and commercial applications, such as exfoliants in personal care and cosmetic formulations. In contrast, secondary MPs are generated through the fragmentation and degradation of larger plastic materials, due to environmental weathering processes. [1] Due to their high surface area-to-volume ratio and hydrophobic nature, MPs have the potential to serve as vectors for the accumulation and transport of diverse organic contaminants, including polycyclic aromatic hydrocarbons (PAHs), perfluoroalkyl substances (PFAS), pharmaceuticals and personal care products (PPCPs), as well as trace metals such as silver, cadmium, chromium, and copper. In the environmental, MPs are subject to aging processes driven by factors such as temperature, ultraviolet radiation, oxygen, and chemical interactions with environmental toxins. This aging can induce significant alterations in their physicochemical properties, which, in turn, can affect the adsorption behavior. [2] Classical and alternative analytical methods such as high-performance liquid chromatography (HPLC) and ambient desorption/ionization high-resolution mass spectrometry (ADI-HR-MS) can help to study the adsorption potential. ADI-HR-MS allows rapid sample analysis with minimal preparation, providing results in under a minute, much faster than traditional chromatographic techniques. [3] This study aims to investigate the influence of aging and particle size on the ability of microplastics to act as vectors for environmental contaminants. Microplastics were prepared in-house and subjected to controlled aging conditions for 12, 24, 36, and 48 hours. Subsequently, the aged MPs were exposed in plastic-free containers to model solutions to simulate co-contaminants in the environment. Adsorption onto synthesized secondary microplastics, varying in size and aging status, was investigated at different time intervals with ambient MS and time-of-flight secondary ion mass spectrometry. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Mass Spectrometry KW - FAPA-MS KW - Microplastics KW - TOF-SIMS KW - Surface Analysis PY - 2025 AN - OPUS4-63606 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmitt, Johannes T1 - Data acquisition system for single particle inductively coupled plasma mass spectrometry (spICP-MS) with nanosecond time resolution N2 - This study presents our data acquisition system prototype for single particle inductively coupled plasma mass spectrometry (spICP-MS) with nanosecond time resolution (nanoDAQ) and a matching data processing approach for time-resolved data in the nanosecond range. The system continuously samples the secondary electron multiplier (SEM) detector signal with a dwell time of approximately 2 ns and enables detection of gold nanoparticles (AuNP) as small as 7.5 nm with a commercial single quadrupole ICP-MS instrument. [1] Analysis of acquired transient data is based on the temporal distance between detector events and a derived ion event density. It was shown that the inverse logarithm of the distance between detector events is proportional to particle size. Also, the number of detector events per particle can be used to calibrate and determine the particle number concentration (PNC) of a nanoparticle dispersion. [1] Particle-by-particle-based analysis of ion event density and other parameters derived from nanosecond time resolution show promising results. High data acquisition frequency of the systems allows recording of a statistically significant number of data points in 60 s or less, which leaves only the sample uptake and rinsing steps as remaining factors for limiting the total measurement time. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - ICP-MS KW - Instrumentation KW - Nano KW - Nanoparticle Characterization PY - 2025 AN - OPUS4-63603 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Favres, Georges T1 - European Metrology Network (EMN) for Advanced Manufacturing N2 - The European Commission has identified Advanced Manufacturing and Advanced Materials as two of six Key Enabling Technologies (KETs). By fully utilizing these KETs, advanced and sustainable economies will be created. It is considered that Metrology is a key enabler for the advancement of these KETs. EURAMET, the association of metrology institutes in Europe, has strengthened the role of Metrology for these KETs by enabling the creation of a European Metrology Network for Advanced Manufacturing. The EMN is made up of National Metrology Institutes (NMIs) and Designated Institutes (DIs) from across Europe and was formally established in October 2021. The EMN aims to provide a high-level coordination of European metrology activities for the Advanced Materials and Advanced Manufacturing community. The EMN itself is organized in three sections representing the major stages of the manufacturing chain: 1) Advanced Materials, 2) Smart Manufacturing Systems, and 3) Manufactured Components & Products. The EMN for Advanced Manufacturing is engaging with stakeholders in the field of Advanced Manufacturing and Advanced Materials (Large companies & SMEs, industry organisations, existing networks, and academia), as well as the wider metrology community (including TCs) to provide input for the preparation of a Strategic Research Agenda (SRA) for Metrology for Advanced Manufacturing. This presentation will describe the progress in the development of the SRA by the EMN for Advanced Manufacturing. The metrology challenges identified across the various key industrial sectors, which utilise Advanced Materials and Advanced Manufacturing will be presented. The EMN for Advanced Manufacturing is supported by the project JNP 19NET01 AdvManuNet. T2 - 21st International Metrology Congress, CIM 2023 CY - Lyon (Chassieu), France DA - 07.03.2023 KW - Advanced Materials KW - EMN KW - European Metrology Network for Advanced Manufacturing, Strategic Research Agenda KW - SRA PY - 2023 AN - OPUS4-59208 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Tina T1 - PBF-LB/M: Prozess Monitoring mittels Multispektraler OT N2 - Die metallische additive Fertigung hat in den letzten Jahren in der industriellen Fertigung zunehmend an Bedeutung gewonnen. Hierbei dominiert das Laser-Pulverbettschweißen von Metallen (PBF/LB-M) die Fertigung von kleinformatigen Bauteilen mit hoher Oberflächengüte. Die anspruchsvolle und kostspielige Qualitätssicherung stellt aber weiterhin ein Hindernis für eine breitere und kostengünstigere Anwendung der additiven Fertigung dar. Dies resultiert teilweise aus fehlenden zuverlässigen In-situ-Monitoringsystemen. Belastbarere Prozessüberwachungsdaten würden eine oft erforderliche teure nachgelagerte Prüfung mittels Computertomografie entbehrlich machen. Die Aufzeichnung der thermischen Signaturen des Aufbauprozess mittels Thermografie-Kameras zeigen hier vielversprechende Ergebnisse. Eine Korrelation zu auftretender Porosität, Delaminationen und Deformationen scheinen möglich. Die geringe räumliche Auflösung und die hohen Anschaffungskosten für thermografische Kamerasysteme stehen jedoch einer größeren industriellen Nutzung im Wege. Ein bereits industriell angewendeter Ansatz zur in-Situ Überwachung des PBF-LB/M Prozesses ist die Optische Tomografie (OT). Hierbei wird die emittierte Prozessstrahlung jeder Bauteilschicht mittels einer hochauflösenden günstigen Kamera für den sichtbaren Wellenlängenbereich in einer Langzeitbelichtung dokumentiert. Die zeitliche Information der emittierten Strahlung geht hierbei verloren. Der gesamte Bauprozess kann jedoch in einem vergleichsweise kleinen Datensatz dokumentiert werden (ein Bild pro Schicht). Eine direkte Korrelation zu auftretenden Defekten gestaltet sich aufgrund der reduzierten thermischen Informationsdichte jedoch schwierig. In diesem Beitrag soll deshalb das Prinzip der Multispektralen Optischen Tomografie (MOT) vorgestellt und erste Messergebnisse an der Forschungsanlage SAMMIE diskutiert werden. Bei der MOT handelt es sich um eine Übertragung des Prinzips der Quotientenpyrometrie auf das etablierte Verfahren der Optischen Tomografie. Die auftretende Prozessstrahlung wird in mehreren Wellenlängenbereichen ortsaufgelöst über die gesamte Bauplattform erfasst und zeitlich in einer Langzeitbelichtung integriert. Hierbei kommen günstige Kamerasysteme für den sichtbaren Wellenlängenbereich zum Einsatz. Das erfasste Signal I jedes Bildpixels für jeden separat erfassten Wellenlängenbereich kann als Maß für das zeitliche Integral der spezifischen Ausstrahlung M des Schmelzbades in diesem Wellenlängenbereich gesehen werden. Nach dem Stefan-Boltzmann-Gesetz hängt die abgestrahlte thermische Leistung P eines idealen Schwarzen Körpers in der vierten Potenz von dessen absoluten Temperatur T ab. Wird nur, wie z.B. bei der klassischen OT angewendet, der nahinfrarote Wellenlängenbereich betrachtet, lässt sich mit dem Planck’schen Strahlungsgesetz sogar eine Proportionalität zur siebten Potenz der Temperatur zeigen. Deshalb liegt ein starker Einfluss der maximal auftretenden Oberflächentemperatur Tmax auf das erfasste Messsignal vor. Das erfasste Signal I wird aber auch durch die spektrale Transmission τ der verwendeten optischen Komponenten des Kamera-Setups, z.B. Filter und Objektive, durch die spektrale Sensitivität S der verwendeten Kamera-Sensoren und den nur sehr schwer zu bestimmenden Emissionsgrad ε der emittierenden (flüssigen) Oberfläche beeinflusst. In einer ersten Näherung wird das Schmelzbad hier als Graukörper, also ein Körper mit wellenlängenunabhängigem Emissionsgrad ε, betrachtet. Basierend auf dieser Annahme und vermessenen optischen Eigenschaften des verwendeten Systems ist es möglich, eine erste Schätzung der maximalen Oberflächentemperatur Tmax vorzunehmen, selbst ohne genaue Kenntnis des tatsächlichen Emissionsgrades ε. Dies wird durch die Anwendung des Planck‘schen Strahlungsgesetzes und die Quotienten Bildung aus den einzelnen erfassten Signalen I ermöglicht. Auch bei diesem Verfahren geht die zeitliche Information einer Schicht, also das Aufwärm- und Abkühlverhalten des Schmelzbades, verloren. Zudem sind die Messergebnisse in Hinblick auf tatsächlich gemessene „maximal auftretende Oberflächentemperatur“ mit gebotener Zurückhaltung zu interpretieren. Trotzdem konnten erste Ergebnisse bereits zeigen, dass die MOT-Daten auch in Bereichen mit Doppelbelichtungen (das teilweise notwendige mehrfache Scannen eines Bereiches mittels des Fertigungslasers) im Gegensatz zur klassischen OT erwartbare Maximaltemperaturen liefern. Abbildung 1 zeigt das erfasste Messergebnis für drei aufeinanderfolgende Schichten eines Bauteils einmal mit MOT (links) und einmal mit einfacher OT (rechts). Deutlich zu erkennen ist das durch die doppelte Belichtung hohe Signal bei der OT. Die Daten der MOT zeigen hier keine erhöhten Werte. Um die ermittelten Temperaturwerte mittels MOT besser einordnen zu können, sind u.a. vergleichende Messungen an Referenzmaterialien geplant. Um die Auswertung der gemessenen Daten zu verbessern, wird zudem der Zeitverlauf des Abkühlens und Aufheizens des Schmelzbades sowie die Einflüsse von Prozessbeiprodukten wie Schmauch und Spritzer näher untersucht. Auch werden Messungen zum Emissionsgrad ε an additiv gefertigten Proben und Metallschmelzen vorgenommen. T2 - Temperatur 2024 CY - Berlin, Germany DA - 05.06.2024 KW - PBF-LB/M KW - In situ monitoring KW - Optische Tomografie KW - Additive Fertigung KW - Prozessüberwachung KW - Additive Manufacturing PY - 2024 AN - OPUS4-60235 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oster, Simon T1 - Prozessüberwachung mittels Thermografie im Laser-Pulverbettschweißen zur Vorhersage von Fehlstellen im Bauteilvolumen N2 - Metallbasierte additive Fertigungsverfahren werden zunehmend industriell zur Anfertigung von komplex geformten Komponenten eingesetzt. In diesem Zusammenhang ist das Laser-Pulverbettschweißen von Metall (PBF-LB/M) ist ein weitläufig genutztes Verfahren. Im PBF-LB/M-Prozess werden lagenweise aufgetragene Metallpulverschichten selektiv mittels eines Lasers aufgeschmolzen. Die Entstehung von internen Fehlstellen (bspw. Porosität, Lunker oder Risse) während des Fertigungsvorgangs stellt ein ernstzunehmendes Risiko für die Bauteilsicherheit und somit für die weitere industrielle Etablierung des Verfahrens dar. Die Entstehung von Fehlstellen hängt eng mit lokalen Änderungen der thermischen Historie des Bauteils zusammen. Mit Hilfe von thermografischen Kameras zur Prozessüberwachung kann die thermische Historie bereits während der Fertigung erfasst werden. Damit eröffnet sich die Möglichkeit, die Entstehung von Fehlstellen anhand der thermografischen Daten vorherzusagen und somit potenziell Kosten für eine nachgelagerte Qualitätssicherung einzusparen. In diesem Beitrag soll die Modellierung der Fehlstellenvorhersage anhand thermografischer Prozessdaten diskutiert werden. Hierbei liegt ein Schwerpunkt auf der Fragestellung, mit welcher Genauigkeit unterschiedliche Formen von Fehlstellen, im speziellen Anbindungsfehler und Keyhole-Porosität, auf lokaler Bauteilebene vorhergesagt werden können. Weiterhin werden verschiedenen Modelltypen aus dem Bereich des Maschinellen Lernens auf ihre Eignung für die Fehlstellenvorhersage verglichen. Ein weiterer zentraler Aspekt in diesem Zusammenhang ist die Untersuchung der Eingangsdaten des Modells auf ihre Relevanz für das Vorhersageergebnis. Als Datengrundlage für die durchgeführten Untersuchungen dienen die Fertigungsprozesse von zwei identischen Haynes-282-Bauteilen (Nickel-Basislegierung), welche mit Hilfe einer im kurzwelligen Infrarotbereich arbeitenden Thermografiekamera überwacht wurden. Das Bauteildesign umfasste lokale Bereiche, in denen mit Hilfe einer Parametervariation die Entstehung von Fehlstellen forciert wurde. Um die Position und Größe der entstandenen Defekte zu quantifizieren, wurden beide Bauteile nach erfolgter Fertigung mittels Computertomografie (CT) geprüft. Im Rahmen der Datenvorbereitung für die Modellierung erfolgte eine Reduzierung der erhobenen Thermogramme zu physikalisch-interpretierbaren Merkmalen (bspw. Schmelzbadfläche oder Zeit-über-Schwellwert). Weiterhin erfolgte eine Registrierung der thermografischen Daten mit den Fehlstellen-Referenzdaten der CT, um eine exakte örtliche Überlagerung von thermischer Information und lokalem Fehlstellenbild zu erzielen. Zur Ermöglichung einer lokalen Fehlstellenvorhersage wurden die thermografischen Daten schichtweise in kleinteiligen Volumina angeordnet, welche als Eingangsgröße für die genutzten ML-Algorithmen dienten. Die Ergebnisse der Untersuchungen zeigen, dass sich die Porosität auf Bauteilschichtebene mit einer hohen Genauigkeit vorhersagen lässt. Eine Vorhersage der Porosität auf lokaler Bauteilebene erweist sich noch als herausfordernd. Die erprobten ML-Algorithmen zeigen vergleichbare Ergebnisse, obwohl ihnen unterschiedliche Modellierungsannahmen zugrunde liegen und sie variierende Komplexität aufweisen. Mit Hilfe der erzielten Erkenntnisse eröffnet sich die Möglichkeit, Rückschlüsse auf die gewählte Prozessüberwachungshardware und Datenvorverarbeitung zu ziehen und somit langfristig die Leistungsfähigkeit von Modellen zur Fehlstellenvorhersage zu verbessern. T2 - Temperatur 2024 CY - Berlin, Germany DA - 05.06.2024 KW - Laser-Pulverbettschweißen KW - Porositätsvorhersage KW - Qualitätsüberwachung KW - Thermografie KW - Machine Learning PY - 2024 AN - OPUS4-60267 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Altenburg, Simon T1 - SAMMIE: Eigenbau-Anlage für Metall-AM zur Sensorentwicklung und Qualifizierung N2 - Im additiven Fertigungsprozess Laser-Pulverbettschweißen wird Metallpulver lagenweise mittels eines Lasers aufgeschmolzen, um Bauteile zu generieren. Hierbei werden die Eigenschaften der Bauteile zu einem großen Teil durch die im Verlauf des Prozesses vorliegenden Temperaturen bestimmt. Dies beinhaltet unter anderem Materialeigenschaften wie Mikrostruktur, Härte, thermische und elektrische Leitfähigkeiten sowie die Ausbildung von Defekten wie z.B. Anbindungsfehler, Keyhole-Porosität (Gaseinschlüsse) oder auch die Ausbildung von Rissen. Zur Überwachung bzw. Vorhersage dieser Eigenschaften sowie zum Abgleich von Simulationen ist eine orts- und zeitaufgelöste Messung der Temperaturverteilung im Prozess daher von herausragender Bedeutung. In der Industrie kommen optische Verfahren, die auf der Messung der thermischen Strahlung basieren, regelmäßig zum Einsatz. Allerdings dienen diese bislang nur der statistischen Auswertung und der Identifikation von Abweichungen vom Normalprozess. Der quantitativen Auswertung zur Temperaturbestimmung stehen aktuell noch eine Vielzahl von Herausforderungen entgegen. Einerseits stellt der Prozess an sich hohe Anforderungen an die Datenerfassung und -auswertung: der Emissionsgrad verändert sich dynamisch im Prozess und lokale Schmauchbildung sorgt für potenzielle Absorption oder Streuung der thermischen Strahlung oder auch des Fertigungslasers. Weiterhin stellt der hochdynamische Prozess hohe Anforderungen an Orts- und Zeitauflösung der eingesetzten Sensorik (z.B. Kameratechnik). Andererseits erschweren an üblichen kommerziell erhältlichen Fertigungsanlagen praktische Hindernisse wie eine eingeschränkte optische Zugänglichkeit und der fehlende Zugriff auf die Anlagensteuerung sowie fehlende Möglichkeiten der Synchronisation der Messtechnik mit dem Prozess eine eingehende Untersuchung dieser Effekte. Um letztere Hindernisse zu umgehen, wurde an der BAM die Forschungsanlage SAMMIE (sensor-based additive manufacturing machine) entwickelt. Einerseits bietet das System alle Möglichkeiten, die auch übliche kommerzielle Systeme bieten. Dies beinhaltet die Fertigung ganzer Bauteile (maximale Größe ca. 65mm x 45 mm x 30 mm) und den Einsatz einer Inertgasatmosphäre inkl. gefiltertem Schutzgasstrom. Andererseits bietet es aber auch einen besonders kompakten Bauraum, um die Sensorik möglichst nah an den Prozess führen zu können, sechs optische Fenster zur Prozessbeobachtung aus unterschiedlichen Winkeln und die Möglichkeit der Prozessbeobachtung koaxial zum Fertigungslaser. Des Weiteren besteht eine einfache Austauschbarkeit aller Fenster, Spiegel und Strahlteiler, um den gesamten optischen Pfad der aktuellen Messaufgabe flexibel anzupassen. Die komplette Anlagensteuerung ist eine Eigenentwicklung und bietet daher auch völlige Anpassbarkeit. Eine synchrone und frei konfigurierbare Triggerung diverser Sensoriken und synchrone Datenerfassung bieten maximale Kontrolle über die Sensorsteuerung. Dieser Beitrag gibt einen Überblick über die Fertigungsanlage SAMMIE. Wissenschaftliche Ergebnisse sowie laufende Arbeiten an der Anlage werden in weiteren Beiträgen vorgestellt. T2 - Temperatur 2024 CY - Berlin, Germany DA - 05.06.2024 KW - PBF-LB/M KW - In situ monitoring KW - Anlage KW - Additive Fertigung KW - Prozessüberwachung KW - Additive Manufacturing PY - 2024 AN - OPUS4-60234 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Tina T1 - Emissivity – Gamechanger for quantitative in-situ monitoring N2 - For a deep process understanding of the laser powder bed fusion process (PBF-LB/M), recording of the occurring surface temperatures is of utmost interest and would help to pave the way for reliable process monitoring and quality assurance. A notable number of approaches for in-process monitoring of the PBF-LB/M process focus on the monitoring of thermal process signatures. However, due to the elaborate calibration effort and the lack of knowledge about the occurring spectral directional emissivity, only a few approaches attempt to measure real temperatures. In this study, to gain initial insights into occurring in the PBF-LB/M process, measurements on PBF-LB/M specimens and metal powder specimens were performed for higher temperatures up to T = 1290 °C by means of the emissivity measurement apparatus (EMMA) of the Center for Applied Energy Research (CAE, Wuerzburg, Germany). Also, measurements at ambient temperatures were performed with a suitable measurement setup. Two different materials—stainless steel 316L and aluminum AlSi10Mg—were examined. The investigated wavelength λ ranges from the visible range (λ-VIS = 0.40–0.75 µm) up to the infrared, λ = 20 µm. The influence of the following factors were investigated: azimuth angle φ, specimen temperature TS, surface texture as for PBF-LB/M surfaces with different scan angles α, and powder surfaces with different layer thicknesses t. T2 - Rapid.Tech 3D 2024 CY - Erfurt, Germany DA - 14.05.2024 KW - PBF-LB/M KW - In situ monitoring KW - Emissivity KW - Additive Manufacturing PY - 2024 AN - OPUS4-60148 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hilberg, Alec T1 - In-situ Temperaturbestimmung im LPA Prozess mittels multispektraler Thermografie N2 - Mit der zunehmenden Relevanz der additiven Fertigung in Fertigungsbereiche mit hohen Anforderungen an Bauteilqualität, wird eine gute Prozessüberwachung unausweichlich. Eine Methode, die bereits gute Korrelation mit Bauteilfehlern gezeigt hat, ist die Temperaturüberwachung mithilfe von thermografischen Methoden. Allerdings unterliegt die Bestimmung der Realtemperaturen vielen unterschiedlichen Problemen. Ein Ansatz mit den Herausforderungen umzugehen, stellt der multispektrale Ansatz dar, der im Projekt QT-LPA untersucht und hier vorgestellt wird. T2 - Temperatur 2024 CY - Berlin, Germany DA - 05.06.2024 KW - Additive Fertigung KW - Multispektral Thermografie KW - LPA PY - 2024 AN - OPUS4-60921 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Soruco Aloisio, Ricardo T1 - Eine Infrastruktur für den digitalen Zwilling – Use Case H2-Tankstelle N2 - Im Rahmen von der BAM und anderen Partnern ins Leben gerufene Initiative „Digitale Qualitätsinfrastruktur“ ist der Fokus auf die Entwicklung von neuen Regelwerken und Zertifizierungsworkflows ausgerichtet. Dabei ist eine besondere Bedeutung dem Zusammenführen von Operational Technology (OT) und Informationstechnik (IT) beizumessen, wenn aktuelle Prozess- und Parameterdaten zuverlässig zur Verfügung gestellt werden sollen. In dem Use Case Wasserstofftankstelle werden digitale Abbilder erprobt, die u.a. der Kalibrierung von Sensoren, dem Nachweis über die Wasserstoffreinheit und der vorausschauenden Wartung dienen sollen. Großenteils der verfahrenstechnischen Bestandsanlagen, die sogenannten Brownfield-Anlagen, sind nach einem konservativen und hierarchischen Automatisierungskonzept ausgelegt. Hierbei können sämtliche Prozessdaten, besonders aus der Feldebene, einer oberen informationstechnische Ebene unzugänglich bleiben. Eine Brückentechnologie nach der NAMUR Open Architecture (NOA) soll möglichst viele Informationen und Daten aus der vorgegebenen Brownfield-Automatisierung sicher und rückwirkungsfrei zur Verfügung stellen. Zusätzliche Sensorik soll ebenso zu der Datenerweiterung beitragen und letztendlich den digitalen Zwilling, bzw. das digitale Abbild des verfahrenstechnischen Prozesses, ergänzen. Die Herausforderungen einer solchen Infrastruktur gelten vor allem einer universellen Kommunikationsschnittstelle und der Sicherheit. Darüber hinaus werden vorgeschlagene Normen und Empfehlungen untersucht und erprobt. T2 - Jahrestreffen der "Prozess-, Apparate- und Anlagentechnik" CY - Frankfurt am Main, Germany DA - 21.11.2022 KW - QI-Digital KW - Use-Case Wasserstofftankstelle KW - Automatisierung KW - Operational Technology KW - Digitaler Zwilling KW - NAMUR Open Architecture PY - 2022 AN - OPUS4-56402 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ascher, Lena T1 - Imaging of Eu doped very small iron oxide nanoparticle in atherosclerotic plaques via LA-ICP-MS N2 - Atherosclerotic lesions can be visualized by magnetic resonance imaging (MRI) using very small iron oxide nanoparticles (VSOP). VSOP accumulate in atherosclerotic plaques and thus serve as an atherosclerosis probe. The aim of this project was to image the distribution of europium doped VSOP (Eu-VSOP) by laser ablation ICP-MS in histological thin cuts of the aortic root region of ApoE knockout mouse model that is rich in atherosclerotic plaques. In addition, it was investigated whether VSOP accumulation in the plaques correlates with other biomarkers of inflammation for example macrophages and altered endothelium to assess whether it correlates with instability or vulnerability of the plaque regions. For this purpose, antibodies were labeled with various lanthanide elements and correlated with the Eu-VSOP distribution using LA-ICP-MS in a multiplex measurement mode. T2 - ESAS/CANAS 2018 CY - Berlin, Germany DA - 20.03.2018 KW - Bioimaging KW - LA-ICP-MS KW - Immunoassay KW - Nanoparticle KW - Labeling PY - 2018 AN - OPUS4-45131 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Altenburg, Simon T1 - Thermografische Schichtdickenbestimmung von Oberflächenschutzsystemen für Beton N2 - Im Bauwesen werden häufig Polymerbeschichtungen auf Beton eingesetzt um zum einen ein bestimmtes Aussehen zu schaffen und zum anderen das Bauteil vor Alterung, Verschleiß und Schädigung zu schützen. Für die Erfüllung aller genannten Ziele ist das Erreichen einer vom Hersteller festgelegten Sollschichtdicke essentiell. Daher wird die Dicke der Beschichtung nach erfolgtem Schichtauftrag überprüft. Für den in diesem Zusammenhang anspruchsvollen mineralischen Untergrund Beton stehen bislang allerdings nur zerstörende Prüfverfahren zur Verfügung. Aus diesem Grund wurden im Rahmen des Projektes IRKUTSK in Kollaboration mit der IBOS GmbH ein auf aktiver Thermografie basierendes Verfahren sowie ein Gerät für den vor-Ort-Einsatz entwickelt, mit dessen Hilfe eine zerstörungsfreie Schichtdickenbestimmung möglich ist. Das Poster erläutert das Messverfahren und die Umsetzung in der Praxis. Es werden Messergebnisse sowie der Vergleich mit zerstörend ermittelten Schichtdicken gezeigt. Hierbei konnte eine sehr gute Übereinstimmung nachgewiesen werden. Die notwendigen Erweiterungen des zugrundeliegenden Modells in Bezug auf die einzelnen Parameter werden erläutert und diskutiert. Die hier vorgestellte Arbeit ist Teil des ZIM-Projektes IRKUTSK mit dem Förderkennzeichen KF2201089AT4 und ist gefördert durch das Bundesministerium für Wirtschaft und Energie aufgrund eines Beschlusses des Deutschen Bundestages. T2 - Bauwerksdiagnose 2018 CY - Berlin, Germany DA - 15.02.2018 KW - Thermografie KW - Schichtdickenbestimmung KW - Oberflächenschutzsysteme KW - Beton KW - ZfP PY - 2018 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-442291 UR - https://www.ndt.net/search/docs.php3?id=22642 AN - OPUS4-44229 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kullolli, Borana T1 - Numerical modelling of soil-structure interfaces N2 - The governing load bearing mechanism of multi-pile foundations is often the shaft friction. Under cyclic loading the soil particles next to the foundation rearrange and tend to compact leading to a decrease of the surrounding normal stress. The reduction of the normal stress leads to a lower threshold for shear stress (friction fatigue), which results in a degraded shaft bearing capacity. The common interface models used for numerical simulations (e.g. Mohr-Coulomb) are not able to capture such behavior. This work aims to develop an interface material model that incorporates such features of the contact behavior at the soil-structure interface. T2 - Alert Geomaterial Workshop CY - Aussois, France DA - 01/10/2018 KW - Soil-structure interaction KW - Interface KW - Material model KW - Numerical modelling PY - 2018 AN - OPUS4-47066 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kullolli, Borana T1 - Soil-structure interaction of offshore foundations N2 - The response of many geotechnical systems, whose structural behavior depends on granular friction and a shearing effect with the ground, is characterized by a complex soil-structure interaction at their interfaces. Experimentally it is found that this interaction is highly non-linear, state-dependent and localized within a narrow layer of soil next to the structure, whereby cyclic loads can play a key role. Numerically, this behavior is often modelled with overly simplified models of interface elements that neglect cyclic effects within the soil. This work introduces a new perspective with an adequate constitutive model in the framework of Generalized Plasticity for sandy soils for an improved consideration of the interface mechanics. T2 - PhD Day BAM CY - Berlin, Germany DA - 31/05/2018 KW - Interface KW - Soil-structure interaction KW - Numerical model PY - 2018 AN - OPUS4-47069 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Michalik-Onichimowska, Aleksandra T1 - Real time monitoring of photoreactions performed within levitated droplets by LA-DBD-MS N2 - The upscaling from small scale academic reactors to large industrial processes typically suffers from a large change in surface-to-volume ratio. A promising approach is the general avoidance of surfaces as in levitated droplet techniques. However, up to now, no mass spectrometric interface for online reaction monitoring in levitated droplets has been provided. As model reaction the photoinitiated thiol-ene coupling between N-boc cysteine methyl ester and allyl alcohol was studied. A droplet of 5 µL reactand solution was provisioned into an acoustic trap aligned lateral to the MS inlet. Contactless sampling by laser ablation (LA) is followed by dielectric barrier discharge (DBD) postionization. The latter is needed to address non polar reaction partners. T2 - 21st International Mass Spectrometry Conference CY - Toronto, Canada DA - 20.08.2016 KW - Monitoring of chemical reactions KW - Acoustic levitation KW - Laser ablation KW - Mass spectrometry PY - 2016 AN - OPUS4-37159 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tuma, Dirk T1 - Preparation and Analysis of Trace Compounds in Hydrogen in the ppm and Sub-ppm Region Relevant for Applications N2 - ISO 14687 defines threshold limits for expectable impurities in hydrogen that is assigned for use in polymer electrolyte membrane (PEM) fuel cells. This work describes the establishment of the traceability of some selected impurities by preparation and analysis of reference gases with the lowest possible uncertainty in composition. Primary reference gases were produced by the gravimetric method according to ISO 6142-1 and the analysis was carried out by operating measurement protocols according to ISO 12963 on two customized trace GC analysers. T2 - ANAKON 2023 CY - Vienna, Austria DA - 11.04.2023 KW - Hydrogen analysis KW - Gravimetric preparation KW - Gas chromatography PY - 2023 AN - OPUS4-57329 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Baeßler, Matthias T1 - Computational Geomechanics for Offshore Wind N2 - Simulations for the Safety and Efficiency of Foundations in the Offshore Wind Energy Production. T2 - Poster Challenge - EERA JP Wind Online Annual Event 2020 CY - Online meeting DA - 14.09.2020 KW - Numerical simulations KW - Marine geomechanics KW - Offshore wind energy PY - 2020 UR - https://www.eerajpwind.eu/events/eera-jp-wind-setwind-annual-event-2020/ AN - OPUS4-51280 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hernández-Gómez, R. A1 - Fernández-Vicente, T. A1 - Chamorro, C. R. T1 - Experimental determination of the density of different biomethane synthetic mixtures N2 - Experimental characterization of the thermodynamic behavior of multicomponent gas mixtures of accurately known composition with traceability to National Standard is of great importance for testing the current reference equation of state (EoS) for natural gases and related mixtures, GERG-2008. Natural gas composition may change considerably due to the diversity of origins, or the possibility to incorporate hydrogen, biomethane or other non-conventional energy gases. In this work, density measurements for three synthetic mixtures, representing two biomethane mixtures and a typical natural gas composition, are presented. Results are compared to the current reference EoS for natural gases and related mixtures, i.e., GERG-2008 and AGA8-DC92. T2 - The 11th Asian Thermophysical Properties Conference CY - Yokohama, Japan DA - 02.10.2016 KW - Density measurements KW - Gas mixtures KW - GERG-2008 equation of state PY - 2016 AN - OPUS4-37963 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jakubowski, Norbert T1 - Speciation of gadolinium based MRI contrast agents in environmental water samples using hydrophilic interaction chromatography coupled to inductively coupled plasma mass spectrometry T2 - Third International Symposium on Metallomics CY - Münster, Germany DA - 2011-06-15 PY - 2011 AN - OPUS4-24106 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Demidov, Alexandr T1 - Tomography of Laser Induced Plasma Using Abel and Radon Reconstruction Techniques T2 - EMSLIBS 2011 CY - Izmir, Turkey DA - 2011-09-11 PY - 2011 AN - OPUS4-23998 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Novel low cost compact Echelle spectrograph for laser induced breakdown spectroscopy with a diode pumped solid state laser T2 - Colloquium Spectroscopicum Internationale XXXVII CY - Rio de Janeiro, Brazil DA - 2011-08-28 PY - 2011 AN - OPUS4-24633 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Rajko T1 - ESI-MS analysis of an un-digested IgG antibody T2 - 44. Jahrestagung der Deutschen Gesellschaft für Massenspektrometrie CY - Dortmund, Germany DA - 2011-02-27 PY - 2011 AN - OPUS4-23822 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias T1 - Elementspurenanalytik in Solarsilicium T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23825 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Michalik-Onichimowska, Aleksandra T1 - Coupling of Acoustically Levitated Droplets with Ion Mobility Spectrometry N2 - Introduction The list of applications for ion mobility spectrometry (IMS) is steadily growing quickened by advances in instrumental design, experimental methods and accompanying theory. The performance of IMS is greatly influenced by the ionization source and the introduction of the analyte, hence new ionization schemes and sampling strategies recently received particular interest.[1] An overall new approach is the coupling of IMS to an acoustically levitated droplet and combined sample desorption/ionization by a laser. In this setup the acoustically levitated droplet works as a wall-less micro reactor.[2] The latter opens the way towards quality control of fast reactions. Generally, the combination of acoustically levitated droplet and IMS bears a wide range of applications from routine analysis to microfluidic optimization of chemical reactions. Experimental part A novel coupling of an acoustically levitated droplet with a homebuilt drift tube ion mobility spectrometry is presented. A new prototype of inlet was customized according to design constrains yielding in maximum ion transmission. Moreover, the commonly used plate repeller was replaced with a point electrode to form a concentric electric field between the droplet and the IMS, geometrically allowing space for the acoustically levitated droplet. The desorption/ionization out of the droplet was performed with an optical parametric oscillator at 2,94 µm wavelength with pulse duration of FWHM = 7 ns. Primary evaluation of the setup was achieved using tetra-n-butylammonium bromide, promazine, perphenazine and L-arginine in direct comparison with the results obtained with a µdroplet IR-MALDI IMS. Results and discussion The coupling of acoustically levitated droplet with IMS was successfully realized giving further possibilities to utilize it as detection method to interrogate the fast kinetics of reactions preformed directly in the droplet. The presented modifications simplify the assembly of the setup and allow for a sufficient isolation between the high voltage, applied on the individual electrodes of the IMS, and the acoustic field sonotrode. The implemented point electrode produces a concentric steep potential field around the acoustically levitated droplet forcing the flow of nascent ions towards the drift tube inlet region. Additionally, it minimizes spatial restrictions giving space for a better accessibility for the sampling laser beam. The recorded ion mobility spectra confirm that the entire arrangement results in an efficient desorption, ionization and ion transfer of the sample liquid. First results show a sensitivity of the IMS comparable to that of the previously introduced µdroplet IR-MALDI. However the main advantage of acoustically levitated droplet is the reduction of long memory effect typically observed for the µdroplet source. These memory effects are attributed to wash-out times of the sample volume and to contamination of surfaces that get into contact with the sample. The contribution can therefore positively demonstrate that by avoiding sample-surface interfaces, the instrument response function can be drastically shortened. This not only significantly decreases the time necessary to clean the system between subsequent measurements but mostly opens the path towards fast kinetic monitoring of chemical reactions within the microdroplet reactors. New aspects The combination of acoustically levitated droplets and ion mobility separation provides a tool for direct online detection of reaction kinetics. T2 - DGMS 2015 CY - Wuppertal DA - 2015-03-01 PY - 2015 AN - OPUS4-34778 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Michalik-Onichimowska, Aleksandra T1 - Monitoring of Thiol-Ene Coupling by Mass Spectrometry and Ion Mobility Spectrometry N2 - The carbon-sulfur bond is frequently occurring in natural products and pharmaceuticals. In a wide range of industrial applications such as polymers and bioorganic functionalization, biomaterials and nanostructured networks formation and microdevice fabrication the targeted construction of C-S bonds is being synthetically important. The synthesis of thioethers is mainly conducted by radical thiol-ene click reactions typically initiated by thermal or UV activation of a radical initiator or direct radical formation via UV irradiation. The reported conversion yields are high after relatively short irradiation times, thus, a fast reaction monitoring is necessary to optimize reaction conditions in terms of total yield and occurrence of undesired by-products. Especially for fast reactions, rapid response is the key feature for online monitoring. The latter gets increasingly important in process analytical approaches for quality assurance and to better control the conversion rate by feedback control. For a headspace analysis, gas detection methods like ion mobility spectrometry (IMS) and mass spectrometry (MS) are especially suitable to this aim since they provide response times in the ms - s range. Moreover, as complementary methods they provide comprehensive information about the molecule and it's structure. The aim of the work is to qualitatively interrogate the sample composition of a photocatalytically initiated thiol-ene coupling in real time. This contribution presents primary results of direct analysis of the photoinitiated synthesis of methyl 2-((tert-butoxycarbonyl)amino)-3-((3-hydroxypropyl)thio) propanoate by IMS and MS utilizing different ionization sources. The thiol-ene reaction is performed between N-Boc-cysteine methyl ester and allyl alcohol utilizing Ru(bpz)3(PF6)2 catalyst as a photoinitiator and p-toluidine as a redox mediator, irradiated at 450 nm according to the procedure presented in [2]. The obtained results were validated by NMR analysis unambiguously indicating the formation of the newly formed C-S bond and additionally providing total reaction yield calibration curves for a quantitative analysis. T2 - ESCRE 2015 CY - München DA - 2015-10-27 PY - 2015 AN - OPUS4-34779 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Surface Chemical Analysis of Carbohydrates on Epoxy-Functionalized Surfaces T2 - 16th European Conference on Applications of Surface and Interface Analysis (ECASIA 15) CY - Granada, Spain DA - 2015-09-28 PY - 2015 AN - OPUS4-34812 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Rajko T1 - Optimization of metal labelling of antibodies by use of ESI-MS T2 - 14. JCF-Frühjahrssymposium CY - Rostock, Germany DA - 2012-03-18 PY - 2012 AN - OPUS4-33412 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Rajko T1 - Optimization of metal labelling of antibodies by use of ESI-MS T2 - 45. DGMS-Jahrestagung CY - Poznan, Poland DA - 2012-03-04 PY - 2012 AN - OPUS4-33416 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Rajko T1 - Characterisation of in IgG antibody via ESI-MS T2 - Tag der Chemie CY - Darmstadt, Germany DA - 2013-06-01 PY - 2013 AN - OPUS4-33415 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Rajko T1 - Characterisation of in IgG antibody via ESI-MS T2 - Tag der Chemie CY - Potsdam, Germany DA - 2013-06-27 PY - 2013 AN - OPUS4-33413 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Janine T1 - Behavior of tributyltin under the influence of suspended particulate matter T2 - Workshop Environmental monitoring of biocides in Europe CY - Berlin, Germany DA - 2015-06-25 PY - 2015 AN - OPUS4-33599 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Warschat, Carsten T1 - Near-IR laser induced desorption sampling of acoustically levitated liquids T2 - DGMS 2015 CY - Wuppertal, Deutschland DA - 2015-03-01 PY - 2015 AN - OPUS4-33640 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Warschat, Carsten T1 - Near-IR laser induced desorption sampling of acoustically levitated liquids T2 - Berliner Chemie Symposium 2015 CY - Berlin, Germany DA - 2015-04-09 PY - 2015 AN - OPUS4-33637 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Warschat, Carsten T1 - Whispering Gallery Modes in Acoustically Levitated Droplets T2 - Anakon 2015 CY - Graz, Österreich DA - 2015-03-23 PY - 2015 AN - OPUS4-33636 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zhang, Zhiyang T1 - SERS characterization of photo-induced dimerization N2 - Dimercaptoazobenzene (DMAB) can be formed from different precursors (e.g., p-Nitrothiophenol and p-Aminothiophenol, see also examples in Figure) by a reaction that can be influenced by localized surface plasmons.[1] Many reaction parameters were shown to influence the pathway of DMAB formation. The mechanism of DMAB formation is studied by surface enhanced Raman scattering (SERS). It is very interesting to delineate effects due to properties of the reacting molecular species and those related to the plasmonic properties of the nanostructures. Currently, we achieve this e.g., by the comparison of the usage of nanoparticle solutions and immobilized nanoparticles.[2] We perform this work, since we aim at modifying and controlling the reaction conditions precisely in microscopic volumes, exploiting the multifunctional properties of different plasmonic nanoparticles [3]. In our poster, we will show and discuss SERS data obtained in experiments at varying reaction and excitation conditions. T2 - Molecular Plasmonics 2015 CY - Jena, Germany DA - 2015-05-07 PY - 2015 AN - OPUS4-34662 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Holger T1 - Evaluation of a polyclonal anti-sulfamethoxazole and a monoclonal anti-estrone antibody in different types of environmental water samples T2 - 15th International Conference on Chemistry and the Environment (EuChems) CY - Leipzig DA - 2015-09-20 PY - 2015 AN - OPUS4-34515 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abdelshafi, Nahla A. T1 - Electrochemical Immunosensor for Drug Monitoring T2 - 11th Internatinal Biosensor Conference BBMEC CY - Regensburg DA - 2015-09-26 PY - 2015 AN - OPUS4-34510 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hernández-Gómez, R. A1 - Chamorro, C. R. T1 - Experimental determination of the density of two synthetic natural gas-type mixtures N2 - Experimental characterization of the thermodynamic behavior of multicomponent gas mixtures of accurately known composition is of great importance for testing the current reference equation of state for natural gases and related mixtures, GERG-2008. Natural gas composition may change considerably due to the diversity of origins, or the possibility to incorporate hydrogen, biogas or other non-conventional energy gases. Thus, the Consultative Committee for Amount of Substance: Metrology in Chemistry and Biology (CCQM) of the Bureau International des Poids et Mesures (BIPM) launched a key comparison on primary standard mixtures for natural gases of this particular characteristics. One mixture is a hydrogen-enriched natural gas mixture (13 components, x(H2) = 0.03) with low calorific value to facilitate support to power-to-gas applications, which often involve blending hydrogen with natural gas. The other mixture resembles a typical liquefied natural gas (“LNG”, 9 components) with high calorific value. T2 - 19th Symposium on Thermophysical Properties CY - Boulder, CO, USA DA - 21.06.2015 KW - GERG-2008 equation of state KW - Density KW - Natural gas-type mixtures KW - Hydrogen-enriched natural gas KW - Liquefied natural gas PY - 2015 AN - OPUS4-35942 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maurer, G. T1 - Gas solubility in ionic liquids: Solubility of a binary gas mixture in a pure ionic liquid as well as of a single gas in a binary liquid mixture N2 - Ionic Liquids (ILs) are employed in various fields, for example, reaction engineering (reactions with gases, such as hydroformylation (CO, H2), hydrogenation (H2), oxidation (O2)) or separation technology (separations of gases, reactants, and high-volatility reaction products). For the basic engineering of such processes, knowledge of phase equilibria, particularly of mixtures, over a broad (p,T) range is mandatory. This contribution reports on recent experimental results from our laboratory: – for the simultaneous solubility of a binary gas mixture in a pure ionic liquid – for the solubility of a single gas in a binary liquid solvent mixture. T2 - EUCHEM 2012 Conference on Molten Salts and Ionic Liquids CY - Celtic Manor, Wales, United Kingdom DA - 05.08.2012 KW - ionic liquids KW - gas solubility KW - Henry's constant PY - 2012 AN - OPUS4-35947 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Phukphatthanachai, Pranee T1 - Determination of total sulfur in a metal matrix by ICP-IDMS: Example Cu matrix N2 - Previously on sulfur determination in metal revealed a lack of traceability and inconsistent results. Solving the problems a reference procedure for sulfur measurement in metal are required to build up a reliable reference value. In this study a procedure was developed for quantification of total sulfur at low concentration (in sub ppm level) in metal using inductively coupled plasma-isotope dilution mass spectrometry (ICP-IDMS). The ion exchange method and complexing agent were applied in this procedure to avoid loading large amount of metal into the instrument. Adding ammonia as a complexing agent into sample solution to reduce sulfur-metal co-elute. The procedure shows high performance and it is expressed in % recovery of sulfur (> 90%) and % metal elimination (>99 %). Additionally, relative measurement uncertainties were calculated less than 1.5 % and the results are traceable directly to SI units. This study would establish as reference procedure for sulfur measurement in metal sample which fit for these purpose as follows; for certified reference material and assigned value for inter-laboratory comparison. T2 - Anwendertreffen Plasmaspektrometrie CY - Berlin, Germany DA - 22.02.2016 KW - Isotope dilution KW - Separation KW - Traceability PY - 2016 AN - OPUS4-36075 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bremser, Wolfgang A1 - Tuma, Dirk T1 - International reference values for calibration of process gas chromatographs (PGCs) and related uncertainties N2 - In a mutual framework agreement, the two German national institutes BAM (Federal Institute of Materials Research and Testing) and PTB (Physikalisch-Technische Bundesanstalt) agreed upon the development, provision, and dissemination of national measurement standards for chemical analysis via primary reference measuring systems. Traceability to national standards and international comparability is of key importance for the acceptance of measurement results in metrology. T2 - 6th International Gas Analysis Symposium & Exhibition -- GAS 2011 CY - Rotterdam, The Netherlands DA - 09.02.2011 KW - Metrology KW - Gas standards KW - Certification PY - 2011 AN - OPUS4-35943 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kern, Simon T1 - Fitting of physically motivated spectral models – a simple calibration-free method for evaluation of online NMR spectra N2 - Currently, research in chemical manufacturing moves towards flexible plug-and-play approaches focusing on modular plants, capable of producing small scales on-demand with short down-times between individual campaigns. This approach allows for efficient use of hardware, a faster optimization of the process conditions, and thus, an accelerated introduction of new products to the market. Driven mostly by the search for chemical syntheses under biocompatible conditions, so-called “click” chemistry rapidly became a growing field of research. The resulting simple one-pot reactions are so far only scarcely accompanied by an adequate optimization via comparably straightforward and robust analysis techniques. Here we report on a fast and reliable calibration-free online high field NMR monitoring approach for technical mixtures. It combines a versatile fluidic system, continuous-flow measurement with a time interval of 20 s per spectrum, and a robust, automated algorithm to interpret the obtained data. All spectra were acquired using a 500 MHz NMR spectrometer (Varian) with a dual band flow probe having a 1/16-inch polymer tubing working as a flow cell. Single scan 1H NMR spectra were recorded with an acquisition time of 5 s, relaxation delay of 15 s. As a proof-of-concept, the thiol-ene coupling between N-boc cysteine methyl ester and allyl alcohol was conducted in non-deuterated solvents while its time-resolved behaviour was characterised with step tracer experiments. Through the application of spectral modeling the signal area for each reactant can be deconvoluted in the online spectra and thus converted to the respective concentrations or molar ratios. The signals which were suitable for direct integration were used herein for comparison purposes of both methods. T2 - Quantitative NMR Methods for Reaction and Process Monitoring (NMRPM) CY - Kaiserslautern, Germany DA - 19.01.2017 KW - Online NMR spectroscopy KW - Thiol-ene coupling KW - Data processig PY - 2017 AN - OPUS4-39009 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Phukphatthanachai, Pranee T1 - Quantification of Sulfur in copper metals and its alloys by ICP-IDMS N2 - Sulfur is one of the major impurity elements in copper. Previously applied methods for the quantification of sulfur in copper and other pure metals revealed a lack of traceability and showed inconsistent result. Therefore, in this study a procedure was developed for the quantification of total sulfur in copper at low concentration levels using inductively coupled plasma-isotope dilution mass spectrometry (ICP-IDMS). A major challenge for the quantification of sulfur in copper (alloyed/unalloyed) by ICPMS is the copper matrix itself, causing matrix effects and making an extensive cleaning (cones, extraction lens) necessary after measurements. Matschat et al investigated the analysis of high-purity metals (including copper) by high resolution ICP-MS and found that the copper matrix shows strong matrix effects on the sensitivity resulting from Cu deposition on the cones. Therefore, the major part of the copper matrix has to be separated, which was accomplished by adding ammonia which forms a complex with the copper while releasing the sulfur. This was followed by a chromatographic separation using a weak cation resin. After that the sulfur fraction was further purified by chromatographic means using an anion exchange method followed by a chelating resin. The anion exchange resin (AG1X8), however, is selective to sulfate and sulfite but less-selective to sulfide. Therefore, when quantifying total sulfur in copper, the different species of sulfur need to be oxidized to sulfate prior to the sulfur-matrix separation on the AG1X8 resin in order to avoid any measurement bias. When applying the HPA oxidation with concentrated HNO3 and H2O2 a complete conversion from sulfide and sulfite to sulfate could be achieved. The recovery of all investigated sulfur species is quantitative within measurement uncertainties. The copper samples investigated in this study contain copper in the range of 0.85-0.99 kg·kg-1 and zinc from <10 to 300 g·kg-1. Approximately 0.10-0.25 g of these samples were used to perform the sulfur-copper separation. After applying the complete three stage separation procedure the mass fractions of both elements were significantly reduced to below 400 ng·g-1 for copper and below 50 ng·g-1 for zinc, respectively. The developed procedure shows high performance, especially concerning high efficiency in matrix removal (> 99.999%) while keeping the recovery of sulfur above 80%. The procedure blank was determined by IDMS as well and yielded values for the individual IDMS measurement sequences ranging from 3 ng to 53 ng. The average of these individual procedure blanks (n=22) was calculated and yielded a total procedure blank of 14 ng sulphur with standard deviation of 12 ng. The limit of detection (LOD, blank+3SD) calculated on this basis was 0.20 µg·g-1 while the limit of quantification (LOQ, blank+10SD) was 0.54 µg·g-1, when considering a sample weight of 0.25 g. The quantification of low sulfur contents (< 15 µg/g) by conventional IDMS is hindered by the very high Cu/S ratio, which clearly affects the separation in a negative way: The recovery of sulfur dropped to about 30 % for four replicates, while two further replicates even showed recoveries below 10%. To enable measurement without completely changing the separation procedure, an exact amount of sulfur was added prior to spiking, such that the sulfur mass fraction was shifted to the optimum working range of the separation procedure. Thus exact amounts of sulfur were added to enhance the mass fraction of sulfur from 15 µg·g-1 to 40 µg·g-1, then the IDMS analysis was performed as usual and finally the added sulfur amount was subtracted. The so obtained measurement result agreed well with the certified value within the uncertainties. The relative expanded measurement uncertainties for conventional IDMS are below 1%. When applying the modified IDMS procedure, where back-spike is added to the sample before spiking, the relative expanded measurement uncertainties are larger and up to 5%. With the presented sulfur-matrix procedure a working range from approximately 15 µg·g-1 to 1500 µg·g-1 can be achieved. The developed procedure for the quantification of low sulfur amounts in copper has been validated here via three different routes: first an inter-laboratory comparison at highest metrological level, second a step-by-step validation by checking each single step of the procedure and third the setup of a complete uncertainty budget. The procedure is sufficient to facilitate value assignment of total sulfur mass fraction in reference materials. Additionally, relative measurement uncertainties were calculated below 1 % and the measurement results are traceable to the SI, which is clearly demonstrated in this work. The procedure reported in this study is a new reference procedure for sulfur measurement in copper, well meeting the requirements of the two major purposes: the certification of reference materials and the assignment of reference values for inter-laboratory comparison. T2 - Winter Conference on Plasma Spectrochemistry CY - Amelia Island, Florida, USA DA - 08.01.2018 KW - Sulfur KW - Copper KW - Isotope dilution mass spectrometry KW - Sulfur-matrix separation KW - Reference procedure KW - Purity determination PY - 2018 AN - OPUS4-43982 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Greiser, Sebastian T1 - Characterization of faujasite-type zeolites with different Si/Al ratios using 29Si (27Al)Trapdor NMR T2 - The 9th Alpine Conference on Solid-State NMR CY - Chamonix-Mont Blanc, France DA - 2015-09-13 PY - 2015 AN - OPUS4-34307 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmid, Thomas T1 - Two calibration-free approaches of analysis of industrial oxides by laser-induced breakdown spectroskopy T2 - 18. Tagung Festkörperanalytik CY - Wien, Austria DA - 2015-07-06 PY - 2015 AN - OPUS4-35165 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Tomography of laser-induced plasma using Radon transform technique for temporally and spatially resolved plasma diagnostics T2 - FKA, Festkörperanalytik CY - Wien, Österreich DA - 2015-06-07 PY - 2015 AN - OPUS4-35151 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eschlboeck-Fuchs, S T1 - Application of laser-induced breakdown spectroscopy for the analysis of slags in industria steel production T2 - 11. Kolloqium Prozessanalytik CY - Wien, Austria DA - 2015-11-30 PY - 2015 AN - OPUS4-35167 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Tomography of laser-induced plasma for temporally, spectrally and spatially resolved plasma diagnostics using Radon transform technique T2 - EMSLIBS CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-35149 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Demidov, Alexandr T1 - Two calibration-free approaches of analysis of industrial oxides by laser-induced breakdown spectroskopy T2 - EMSLIBS 2015 CY - Linz, Austria DA - 2015-09-14 PY - 2015 AN - OPUS4-35166 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Holger T1 - Matrixvalidierung von Immunoassays (ELISAs) für Abwasserproben T2 - Wasserchemische Gesellschaft 2015 CY - Schwerin, Germany DA - 2015-05-11 PY - 2015 AN - OPUS4-33645 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bolz, Axel T1 - Paper Test Strips with SERS detection for chemical analysis T2 - 4. Berliner Chemie Symposium CY - Berlin, Germany DA - 2015-04-09 PY - 2015 AN - OPUS4-33747 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bolz, Axel T1 - SERS Detection on Pater Test Stripes T2 - Anakon 2015 CY - Graz, Österreich DA - 2015-03-23 PY - 2015 AN - OPUS4-33746 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer, Klas T1 - Fitting of physically motivated spectral models – a simple calibration-free method for evaluation of online NMR spectra N2 - Currently, research in chemical manufacturing moves towards flexible plug-and-play approaches focusing on modular plants, capable of producing small scales on-demand with short down-times between individual campaigns. This approach allows for efficient use of hardware, a faster optimization of the process conditions, and thus, an accelerated introduction of new products to the market. Driven mostly by the search for chemical syntheses under biocompatible conditions, so-called “click” chemistry rapidly became a growing field of research. The resulting simple one-pot reactions are so far only scarcely accompanied by an adequate optimization via comparably straightforward and robust analysis techniques. Here we report on a fast and reliable calibration-free online high field NMR monitoring approach for technical mixtures. It combines a versatile fluidic system, continuous-flow measurement with a time interval of 20 s per spectrum, and a robust, automated algorithm to interpret the obtained data. All spectra were acquired using a 500 MHz NMR spectrometer (Varian) with a dual band flow probe having a 1/16-inch polymer tubing working as a flow cell. Single scan 1H NMR spectra were recorded with an acquisition time of 5 s, relaxation delay of 15 s. As a proof-of-concept, the thiol-ene coupling between N-boc cysteine methyl ester and allyl alcohol was conducted in non-deuterated solvents while its time-resolved behaviour was characterised with step tracer experiments. Through the application of spectral modeling the signal area for each reactant can be deconvoluted in the online spectra and thus converted to the respective concentrations or molar ratios. The signals which were suitable for direct integration were used herein for comparison purposes of both methods. T2 - ANAKON 2017 CY - Tübingen, Germany DA - 03.04.2017 KW - Photoreaction KW - Online NMR spectroscopy KW - Spectral modeling KW - Reaction monitoring PY - 2017 AN - OPUS4-39694 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Phukphatthanachai, Pranee T1 - Determination of total sulfur in a metal matrix by ICP-IDMS: Example Cu matrix N2 - Previously on sulfur determination in metal revealed a lack of traceability and inconsistent results. Solving the problems a reference procedure for sulfur measurement in metal are required to build up a reliable reference value. In this study a procedure was developed for quantification of total sulfur at low concentration (in sub ppm level) in metal using inductively coupled plasma-isotope dilution mass spectrometry (ICP-IDMS). The ion exchange method and complexing agent were applied in this procedure to avoid loading large amount of metal into the instrument. Adding ammonia as a complexing agent into sample solution to reduce sulfur-metal co-elute. The procedure shows high performance and it is expressed in % recovery of sulfur (> 90%) and % metal elimination (>99 %). Additionally, relative measurement uncertainties were calculated less than 1.5 % and the results are traceable directly to SI units. This study would establish as reference procedure for sulfur measurement in metal sample which fit for these purpose as follows; for certified reference material and assigned value for inter-laboratory comparison. T2 - Anwendertreffen Plasmaspektrometrie 2016 CY - Berlin, Germany DA - 22.02.2016 KW - IDMS KW - Sulfur-matrix separatio KW - Purity assessment PY - 2016 AN - OPUS4-40027 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matiaske, Anna-Maria T1 - Remote Double pulse LIBS investigation on solid and liquid glass doped with metal oxides T2 - 6Th International Conterence on Laser-Induced Breackdown Spektroskopie- LIBS2010 CY - Memphis, TN, USA DA - 2010-09-13 PY - 2010 AN - OPUS4-22668 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merk, Sven T1 - Rapid analysis of soil samples for precision agriculture by LIBS T2 - 6Th International Conterence on Laser-Induced Breackdown Spektroskopie LIBS 2010 CY - Memphis, TN, USA DA - 2010-09-13 PY - 2010 AN - OPUS4-22669 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kalies, G. T1 - Reliable Information on Solids from Liquid-Phase Adsorption T2 - 10 th International Conference on Fundamentls of Adsorption CY - Awaji Island, Japan DA - 2010-05-23 PY - 2010 AN - OPUS4-22670 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tuma, Dirk T1 - High-pressure gas solubility and associated phase equilibria in systems with ionic liquids 14. - 19.03.2010, T2 - EUCHEM Conference on MOlten Salts and Ionic Liquids 2010 CY - Bamberg, Germany DA - 2010-03-14 PY - 2010 AN - OPUS4-21583 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esslinger, Susanne T1 - Nachweis von HBCD in Meeresbewohnern zweier norwegischer Fjorde T2 - Tag der Chemie CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21215 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias T1 - Bestimmung von Spurenverunreinigungen in Solarsilicium T2 - 9. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse, 22. ICP-MS Anwendertreffen CY - Berlin, Germany DA - 2010-09-06 PY - 2010 AN - OPUS4-21988 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Philipp, Rosemarie T1 - Traceable measurements for monitoring critical pollutants under the European Water Framework Directive (WFD) 2000/60/EC T2 - EMRP Review Conference CY - Budapest, Hungary DA - 2010-11-22 PY - 2010 AN - OPUS4-22422 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Model Investigation On Prediction Of Temperature And Electron Density From Emission Spectra Of Laser Induced Plasma T2 - 2010 Winter Conference on Plasma Spectrochemistry Fort Myers CY - Fort Myers, FL, USA DA - 2010-01-04 PY - 2010 AN - OPUS4-22910 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abad Andrade, Carlos Enrique T1 - Stable isotope amount ratio analysis by using high-resolution continuum source graphite furnace molecular absorption spectrometry N2 - Analysis of stable isotopes has been used as proof of provenance of mineral and biological samples, to estimate a contamination source and to determine geological processes. This kind of analysis needs high accuracy and precision for reliable conclusions. Currently, stable isotope analysis is dominated by mass spectrometric techniques that are time consuming and expensive. Here we present a fast and low cost alternative for isotope analysis of boron and magnesium: high-resolution continuum source graphite furnace molecular absorption spectrometry (HR-CS-GFMAS). Two stable isotope systems were evaluated separately: boron (10B:11B) and magnesium (24Mg:25Mg:26Mg). Their isotope amount ratios were estimated by monitoring their absorption spectra in-situ generated monohydrides. The molecular absorption spectrum of a XH molecule (X= B or Mg) with n isotopes would be a linear combination of n isotopologue spectra and the amount of each component (isotope) could be calculated by a multivariate regression (n= 2 and 3 for B and Mg respectively). For the analysis of boron certified reference materials (CRM), the band 1→1 for the electronic transition X1Σ+ → A1Π was measured around wavelength 437.1 nm. Since boron has a memory effect in graphite furnaces, a combination of 2 % (v/v) hydrogen gas in argon, 1 % trifluoromethane in argon, an acid solution of calcium chloride and mannitol as chemical modifiers were used during the BH vaporization at 2600 °C. Partial least square regression (PLS) for analysis of samples was applied. For this, a spectral library with different isotope ratios for PLS regression was created. Magnesium does not have memory effect. Therefore, only 2 % of hydrogen in argon as gas modifier during vaporization at 2500 °C was employed for analysis of magnesium CRM. Absorption spectra of MgH for the X2Σ→A2Π electronic transition (band 0→0) were recorded around wavelength 513.45 nm. A similar PLS procedure to the BH was applied. Results for B and Mg CRM are metrologically compatible with those reported by mass spectrometric methods. An accuracy of 0.08 ‰ for B and 0.1 ‰ Mg was obtained as the average deviation from the isotope CRM. Expanded uncertainties with a coverage factor of k = 2 range between 0.10 - 0.40 ‰. T2 - FACSS / SciX Conference 2017 CY - Reno, NV, USA DA - 08.10.2017 KW - Boron isotopes KW - High-Resolution Continuum Source Molecular Absorption Spectrometry KW - Graphite furnace KW - Isotopic shift KW - Hydride KW - Isotope ratio PY - 2017 AN - OPUS4-43350 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wienold, Julia T1 - Lithiumboratschmelzaufschlüsse für die Spurenelementanalyse von refraktären Materialien mit Laser Ablation ICP-MS T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23226 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias T1 - Determination of trace impurities in solar grade silicon T2 - European Winter Conference on Plasma Spectrochemistry CY - Zaragoza, Spain DA - 2011-01-30 PY - 2011 AN - OPUS4-23225 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfeifer, Jens T1 - Reference gas calibration setup for elemental analysis T2 - 12th Biological and Environmental Reference Materials (BERM) Symposium CY - Oxford, England DA - 2009-07-07 PY - 2009 AN - OPUS4-19318 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhse, Marek T1 - Novel Versatile LIBS-Raman Echelle Spectrometer for Elemental and Molecular Analysis of Solids T2 - LIPS CY - Berlin, Germany DA - 2008-09-22 PY - 2008 AN - OPUS4-19296 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scharf, Holger T1 - Development of a certified reference material for the determination of trace elements and pentachlorophenol in wood T2 - 12th Biological and Environmental Reference Materials (BERM) Symposium CY - Oxford, England DA - 2009-07-07 PY - 2009 AN - OPUS4-19319 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herwig, Nadine T1 - Stable Isotope Analysis of light and heavy elements for differentation between german und austrian Bovire samples T2 - Trace Conference CY - Freising, Germany DA - 2009-04-01 PY - 2009 AN - OPUS4-19424 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulte, Franziska T1 - Analysis of Carotenoids Contained in Pollen by Raman Spectroscopy T2 - Tag der Chemie CY - Potsdam, Germany DA - 2009-06-04 PY - 2009 AN - OPUS4-19304 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klimakow, Maria T1 - Combined Synchrotron XRD/ Raman Measurements: A versatile method for in situ Identification of Polymorphic Transitions during Crystallization Processes T2 - 40. Jahrestagung der BACG (British Association for Crystal Growth) CY - Bristol, England DA - 2009-09-06 PY - 2009 AN - OPUS4-19482 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulte, Franziska T1 - HPTLC-supported and in-situ resonance Raman spectroscopy of carotenoid signature in pollen T2 - ECSBM CY - Palermo, Italy DA - 2009-08-28 PY - 2009 AN - OPUS4-19542 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schulte, Franziska T1 - HPTLC-supported and in-situ resonance Raman spectroscopy of carotenoid signature in pollen T2 - Workshop, Robert-Koch-Institut CY - Berlin, Germany DA - 2009-10-15 PY - 2009 AN - OPUS4-20127 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maiwald, Michael T1 - Referenzgase für die Analytik - zwischen Referenzmaterial und Klimawandel T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-20679 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sarfraz, Adnan T1 - Crystallization and Morphological Diversity of Caffeine on Surfaces: Needles and Hexagons T2 - Tag der Chemie CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21209 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Esslinger, Susanne T1 - HBCD in Silbermöweneiern: enantiomerenspezifischer Nachweis und zeitlicher Verlauf T2 - Tag der Chemie CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21214 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mönch, Bettina T1 - Systematische Untersuchungen zur Reinigung und Anreicherung von wässrigen Extrakten zur Analytik von Ethylglucuronid aus Haaren T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23370 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lischka, Susanne T1 - Synthese 13C-markierter Kalibrierstandards für die Arsenspeziesanalytik mittels LC-ESI-MS/MS T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23369 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühn, Andreas T1 - Kontamination von Totalreflektios-Röntgen-Fluoreszenz-Proben im Kaltplasmaverascher T2 - Anakon 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23399 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Balski, Matthias T1 - Determination of trace impurities in solar grade silicon T2 - CANAS 2011 CY - Leipzig, Germany DA - 2011-03-13 PY - 2011 AN - OPUS4-23235 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abdelshafi, Nahla A. T1 - Microfluidic electrochemical immunosensors for Cocaine detection T2 - Potsdam Days on Bioanalysis 2014 CY - Berlin-Brandenburg DA - 2014-11-06 PY - 2014 AN - OPUS4-32053 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abdelshafi, Nahla A. T1 - Microfluidic electrochemical immunosensors for Cocaine detection T2 - Adlershofer Forschungsforum CY - Berlin DA - 2014-11-11 PY - 2014 AN - OPUS4-32054 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bierstedt, Andreas T1 - Combination of laser spectroscopy and laser ablation mass spectrometry T2 - IMSC 2014 CY - Geneva, Schweiz DA - 2014-08-24 PY - 2014 AN - OPUS4-31847 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sut, Aleksandra T1 - Solid-state NMR Identifying the Interactions in Flame Retardant Formulations T2 - 36th Discussion Meeting of the GDCh-Division of "Magnetic Resonance" CY - Berlin, Germany DA - 2014-09-29 PY - 2014 AN - OPUS4-32356 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gornushkin, Igor B. T1 - Standardless analysis of steel slags via plasma modeling T2 - LIBS 2014 CY - Beijing, China DA - 2014-09-06 PY - 2014 AN - OPUS4-32131 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nietzold, Carolin T1 - XPS and NEXAFS study of biointerfaces for microarray applications T2 - BESSY user meeting 2014 CY - Berlin, Germany DA - 2014-12-04 PY - 2014 AN - OPUS4-32395 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kern, Simon T1 - “Click” analytics for “click” chemistry – a simple method for calibration-free evaluation of online NMR spectra N2 - Currently research in chemical manufacturing moves towards flexible plug-and-play approaches focusing on modular plants, capable of producing small scales on-demand with short down-times between individual campaigns. This approach allows for efficient use of hardware, a faster optimization of the process conditions, and thus, an accelerated introduction of new products to the market. Driven mostly by the search for chemical syntheses under biocompatible conditions, so-called “click” chemistry rapidly became a growing field of research. The resulting simple one-pot reactions are so far only scarcely accompanied by an adequate optimization via comparably straightforward and robust analysis techniques. Here we report on a fast and reliable calibration-free online high field NMR monitoring approach for technical mixtures. It combines a versatile fluidic system, continuous-flow measurement with a time interval of 20 s per spectrum, and a robust, automated algorithm to interpret the obtained data. All spectra were acquired using a 500 MHz NMR spectrometer (Varian) with a dual band flow probe having a 1/16 inch polymer tubing working as a flow cell. Single scan 1H spectra were recorded with an acquisition time of 5 s, relaxation delay of 15 s. As a proof-of-concept, the thiol-ene coupling between N-boc cysteine methyl ester and allyl alcohol was conducted in non-deuterated solvents while its time-resolved behaviour was characterised with step tracer experiments Through the application of spectral modeling the signal area for each reactant can be deconvoluted in the online spectra and thus converted to the respective concentrations or molar ratios. The signals which were suitable for direct integration were used herein for comparison purposes of both methods. T2 - EuroPACT 2017 CY - Potsdam, Germany DA - 10.05.2017 KW - Online NMR Spectroscopy PY - 2017 AN - OPUS4-40283 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sut, Aleksandra T1 - Solid-state NMR Identifying the Chemistry in Multicomponent Flame-retarded Polyolefin Systems N2 - Understanding of the interaction in multicomponent flame-retarded polymeric system is crucial to obtain the best performance at the possible lowest load of additives. In this work, polyolefine based systems are investigated by solid state NMR and cone calorimetry. As a polymer matrix thermoplastic elastomer based on styrene (TPE-S) was chosen. Different combination of additives was investigated in order to identify the chemistry occurring during the pyrolysis. As additives aluminium diethylphosphinate (AlPi), ammonium polyphosphate, zinc borate (ZB), poly(phenylene oxide) (PPO), magnesium hydroxide (MH) and dimethyl- methylvinyl siloxane (Si) were used. Fire residues remained after the cone calorimeter test were analyzed by solid state NMR (31P, 27Al, 13C, 11B, 29Si). The formation of different phosphates and aluminates was identified, indicating the chemical interaction between the additives. Detailed investigation delivered meaningful insights into the chemistry controlling flame retardancy. T2 - Recent Advances in Flame Retardancy of Polymeric Materials, Flame 2017 CY - Boston, MA, USA DA - 11.06.2017 KW - Solid-state NMR KW - Flame retardancy KW - Cone calorimeter KW - Aluminium diethylphosphinate KW - Zinc borate KW - Multicomponent systems PY - 2017 AN - OPUS4-40769 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Holger T1 - Entwicklung und Anwendung eines Immunoassays (ELISA) zur Quantifizierung von Sulfamethoxazol in Abwasser und Oberflächengewässern N2 - N-Acetyl-SMX ist der Kreuzreaktand mit der bisher höchsten bekannten Kreuzreaktivität in diesem SMX-ELISA. Gemessene SMX-Konzentrationen in Klärwerkszuläufen waren im Bereich von 354-881 ng/L, in Abläufen von 221-421 ng/L und in Oberflächenwasser von 24-202 ng/L. Durch Verwendung einer Auftrennung der Probe in Fraktionen lassen sich störende Interferenzen beseitigen, aber die Probenmesszeit wird deutlich länger. T2 - 2. Wasseranalytisches Seminar (MWAS 2016) CY - Mülheim an der Ruhr, Germany DA - 14.09.2016 KW - Sulfamethoxazole KW - ELISA KW - LC-ELISA KW - Überbestimmung KW - Kreuzreaktand PY - 2016 AN - OPUS4-37383 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kern, Simon T1 - “Click” analytics for “click” chemistry – a simple method for calibration-free evaluation of online NMR spectra N2 - Currently research in chemical manufacturing moves towards flexible plug-and-play approaches focusing on modular plants, capable of producing small scales on-demand with short down-times between individual campaigns. This approach allows for efficient use of hardware, a faster optimization of the process conditions, and thus, an accelerated introduction of new products to the market [1]. Driven mostly by the search for chemical syntheses under biocompatible conditions, so-called “click” chemistry rapidly became a growing field of research. The resulting simple one-pot reactions are so far only scarcely accompanied by an adequate optimization via comparably straightforward and robust analysis techniques. Here we report on a fast and reliable calibration-free online high field NMR monitoring approach for technical mixtures. It combines a versatile fluidic system, continuous-flow measurement with a time interval of 20 s per spectrum, and a robust, automated algo-rithm to interpret the obtained data. All spectra were acquired using a 500 MHz NMR spectrometer (Varian) with a dual band flow probe having a 1/16 inch polymer tubing working as a flow cell. Single scan 1H spectra were recorded with an acquisition time of 5 s, relaxation delay of 15 s. T2 - 11. Doktorandenseminar 2017 des Arbeitskreis Prozessanalytik der GDCh und DECHEMA CY - Berlin, Germany DA - 12.03.2017 KW - Online NMR Spectroscopy KW - Click chemistry KW - Data analysis PY - 2017 AN - OPUS4-39397 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Phukphatthanachai, Pranee T1 - Quantification of sulfur in copper metals and its alloys by ICP-IDMS N2 - Sulfur is one of the major impurity elements in copper. Previously applied methods for the quantification of sulfur in copper and other pure metals revealed a lack of traceability and showed inconsistent result. Therefore, in this study a procedure was developed for the quantification of total sulfur in copper at low concentration levels using inductively coupled plasma-isotope dilution mass spectrometry (ICP-IDMS). A major challenge for the quantification of sulfur in copper (alloyed/unalloyed) by ICPMS is the copper matrix itself, causing matrix effects and making an extensive cleaning (cones, extraction lens) necessary after measurements. Matschat et al investigated the analysis of high-purity metals (including copper) by high resolution ICP-MS and found that the copper matrix shows strong matrix effects on the sensitivity resulting from Cu deposition on the cones. Therefore, the major part of the copper matrix has to be separated, which was accomplished by adding ammonia which forms a complex with the copper while releasing the sulfur. This was followed by a chromatographic separation using a weak cation resin. After that the sulfur fraction was further purified by chromatographic means using an anion exchange method followed by a chelating resin. The anion exchange resin (AG1X8), however, is selective to sulfate and sulfite but less-selective to sulfide. Therefore, when quantifying total sulfur in copper, the different species of sulfur need to be oxidized to sulfate prior to the sulfur-matrix separation on the AG1X8 resin in order to avoid any measurement bias. When applying the HPA oxidation with concentrated HNO3 and H2O2 a complete conversion from sulfide and sulfite to sulfate could be achieved. The recovery of all investigated sulfur species is quantitative within measurement uncertainties. The copper samples investigated in this study contain copper in the range of 0.85-0.99 kg·kg-1 and zinc from <10 to 300 g·kg-1. Approximately 0.10-0.25 g of these samples were used to perform the sulfur-copper separation. After applying the complete three stage separation procedure the mass fractions of both elements were significantly reduced to below 400 ng·g-1 for copper and below 50 ng·g-1 for zinc, respectively. The developed procedure shows high performance, especially concerning high efficiency in matrix removal (> 99.999%) while keeping the recovery of sulfur above 80%. The procedure blank was determined by IDMS as well and yielded values for the individual IDMS measurement sequences ranging from 3 ng to 53 ng. The average of these individual procedure blanks (n=22) was calculated and yielded a total procedure blank of 14 ng sulphur with standard deviation of 12 ng. The limit of detection (LOD, blank+3SD) calculated on this basis was 0.20 µg·g-1 while the limit of quantification (LOQ, blank+10SD) was 0.54 µg·g-1, when considering a sample weight of 0.25 g. The quantification of low sulfur contents (< 15 µg/g) by conventional IDMS is hindered by the very high Cu/S ratio, which clearly affects the separation in a negative way: The recovery of sulfur dropped to about 30 % for four replicates, while two further replicates even showed recoveries below 10%. To enable measurement without completely changing the separation procedure, an exact amount of sulfur was added prior to spiking, such that the sulfur mass fraction was shifted to the optimum working range of the separation procedure. Thus exact amounts of sulfur were added to enhance the mass fraction of sulfur from 15 µg·g-1 to 40 µg·g-1, then the IDMS analysis was performed as usual and finally the added sulfur amount was subtracted. The so obtained measurement result agreed well with the certified value within the uncertainties. The relative expanded measurement uncertainties for conventional IDMS are below 1%. When applying the modified IDMS procedure, where back-spike is added to the sample before spiking, the relative expanded measurement uncertainties are larger and up to 5%. With the presented sulfur-matrix procedure a working range from approximately 15 µg·g-1 to 1500 µg·g-1 can be achieved. The developed procedure for the quantification of low sulfur amounts in copper has been validated here via three different routes: first an inter-laboratory comparison at highest metrological level, second a step-by-step validation by checking each single step of the procedure and third the setup of a complete uncertainty budget. The procedure is sufficient to facilitate value assignment of total sulfur mass fraction in reference materials. Additionally, relative measurement uncertainties were calculated below 1 % and the measurement results are traceable to the SI, which is clearly demonstrated in this work. The procedure reported in this study is a new reference procedure for sulfur measurement in copper, well meeting the requirements of the two major purposes: the certification of reference materials and the assignment of reference values for inter-laboratory comparison. T2 - Winter Conference on Plasma Spectrochemistry CY - Amelia Island, FL, USA DA - 08.01.2018 KW - Isotope dilution mass spectrometry KW - Sulfur-copper-sepration KW - SI traceability KW - Measurement uncertainty KW - ICP-MS KW - Sulfur species conversion PY - 2018 AN - OPUS4-44640 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abad Andrade, Carlos Enrique T1 - Stable Isotope Analysis Using Molecular Absorption Spectrometry N2 - We propose an alternative faster and low-cost optical method for isotope analysis: high-resolution continuum source molecular absorption spectrometry (HR-CS-MAS). Stable isotope amount composition of X = Li, B, Mg, Ca and Sr were determined by monitoring the absorption spectra of their in situ generated mono-hydrides (XH) in graphite furnace HR-CS-MAS. Isotopes of boron (10B and 11B) were studied via their hydrides for the electronic transition X1Σ+ → A1Π (Fig. 1a). The spectrum of a given sample is a linear combination of the 10BH molecule and its isotopologue 11BH. Therefore, the isotopic composition of samples can be calculated by a partial least square regression (PLS). For this, a spectral library is built by using samples with known isotope composition. Results with an accuracy of 0.15 ‰ are metrologically compatible with those reported by mass spectrometric methods. Similar results are obtained for n isotope systems like Mg (24Mg, 25Mg, and 26Mg), where isotope shifts of their isotopologues can be resolved as shown in Fig.1b. The extension of this methodology to other elements like Li, Ca and Sr is discussed. T2 - Goldschmidt Conference 2018 CY - Boston, MA, USA DA - 12.08.2018 KW - Isotope KW - HR-CS-MAS KW - Mono-hydride KW - Spectrometry PY - 2018 AN - OPUS4-45825 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lozano-Martín, D. A1 - Moreau, A. A1 - Vega-Maza, D. A1 - Chamorro, C. R. T1 - High-pressure density data of binary (carbon dioxide + oxygen) mixtures for the development of equation-of-state models N2 - On the way to a low carbon economy mixtures containing carbon dioxide become increasingly important. Processing of such gas mixtures requires reliable thermodynamic models that can accurately describe the state of matter over an extended range. Mixtures with oxygen for example, are frequently encountered in carbon capture and storage (CCS) processes. This work reports new experimental (p, rho, T) data at T = (250 to 375 K) and up to a maximum pressure pmax = 20 MPa for five binary (CO2 + O2) mixtures which cover the entire composition range. T2 - 31st European Symposium on Applied Thermodynamics CY - Online meeting DA - 05.07.2021 KW - Binary mixtures CO2 + O2 KW - Density measurements KW - Equations of state PY - 2021 AN - OPUS4-53990 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Przyklenk, A. T1 - Progress of the European Metrology Network for Advanced Manufacturing N2 - The European Metrology Network (EMN) for Advanced Manufacturing has been established in June 2021. Currently nine EMNs focussing on different important topics of strategic importance for Europe exist and form an integral part of EURAMET, the European Association of National Metrology Institutes (NMI). EMNs are tasked to ▪ develop a high-level coordination of the metrology community in Europe in a close dialogue with the respective stakeholders (SH) ▪ develop a strategic research agenda (SRA) within their thematic areas ▪ provide contributions to the European Partnership on Metrology research programme Based on the analysis of existing metrology infrastructures and capabilities of NMIs, the metrology research needs for advanced manufacturing are identified in close cooperation with academic, governmental and industrial stakeholders. Here, we report on the progress of the EMN for Advanced Manufacturing. T2 - Euspen 22nd International Conference & Exhibition (Euspen 2022) CY - Genf, Switzerland DA - 30.05.2022 KW - JNP AdvManuNet KW - Metrology KW - Advanced manufacturing KW - European Metrology Network KW - EMN PY - 2022 AN - OPUS4-55805 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merz, Benjamin T1 - Position Detection for Hybrid Repair of gas turbine blades using PBF-LB/M N2 - This poster presents a workflow for camera-based position detection of components within PBF-LB/M machines. This enables a hybrid repair process of highly stressed components such as gas turbine blades using PBF-LB/M. T2 - Kuratoriumsführung CY - Berlin, Germany DA - 21.06.2022 KW - Additive Manufacturing KW - PBF-LB/M KW - Position detection KW - Camera KW - Image processing PY - 2022 AN - OPUS4-56587 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf T1 - Direct thermal extraction as screening method for testing materials with regard to VOC- and SVOC-emissions under environmental aspects T2 - PITTCON 2004 CY - Chicago, IL, USA DA - 2004-03-07 PY - 2004 AN - OPUS4-4916 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang T1 - Emission and odour measurement of construction products evaluated using a German construction product evaluation scheme T2 - Emissions and Odours From Materials CY - Brussels, Belgium DA - 2004-09-22 PY - 2004 AN - OPUS4-4132 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Walther, Wolfgang T1 - Holzschutzmittelwirkstoffe in Luft-Prüfkammermessungen mit der GC-Thermodesorption T2 - Tagung "Analytik von Gefahrstoffen" CY - Bremen, Germany DA - 1994-12-08 PY - 1994 AN - OPUS4-5644 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Buge, Hans-Gerhard T1 - Eindringverhalten von Holzschutzmittelwirkstoffen in Holz - Aspekte der Probenahme und Probenvorbereitung am Beispiel Dichlofluanid T2 - InCom '95 CY - Düsseldorf, Germany DA - 1995-03-20 PY - 1995 AN - OPUS4-5645 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf T1 - VOC and SVOC Contribution of Papers for Hardcopy Devices to Ondoor Air Pollution T2 - Healthy Buildings 2003 - 7th International Conference CY - Singapore DA - 2003-12-07 PY - 2003 AN - OPUS4-5437 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rockstroh, Jens T1 - Entwicklung einer umweltvertäglichen Holzklebetechnik durch den Einsatz von Proteinbindemitteln T2 - 8. Symposium, Nachwachsende Rohrstoffe für Chemie CY - Tübingen, Germany DA - 2003-03-26 PY - 2003 AN - OPUS4-5438 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rockstroh, Jens T1 - Organic acid emissions from building products measured with a new test method T2 - International Conference on INDOOR AIR QUALITY "HEALTHY BUILDINGS 2006" CY - Lisbon, Portugal DA - 2006-06-04 PY - 2006 AN - OPUS4-12310 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Däumling, C. T1 - Health-related Evaluation Procedure for Volatile Organic Compounds Emissions from Building Products T2 - Emissions and Odours from Materials CY - Brussels, Belgium DA - 2004-09-22 PY - 2004 AN - OPUS4-6540 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bergmann, Meike T1 - Bestimmung von Polybromierten Diphenylethern (PBDE) in Polymeren T2 - 34. Deutscher Lebensmittelchemikertag und EURO FOOD CHEM XIII; Universität Hamburg CY - Hamburg, Germany DA - 2005-09-19 PY - 2005 AN - OPUS4-7124 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang T1 - Emission tests on thermal insulation products with the intention to implement these tests into EN standards T2 - 10th international Conference on Indoor Air Quality and Climate -Indoor Air 2005 CY - Beijing, China DA - 2005-09-04 PY - 2005 AN - OPUS4-10934 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rockstroh, Jens T1 - Investigations on the emission of organic acids from buildings products in emission test chambers - development of a new test method T2 - 8th international Conference on Healthy Buildings 2006 CY - Lisbon, Portugal DA - 2006-06-04 PY - 2006 AN - OPUS4-13233 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Birgit T1 - A European project SysPAQ - EU FP6 NEST initiative measuring the impossible T2 - 13th international Metrology Congress CY - Lille, France DA - 2007-06-18 PY - 2007 AN - OPUS4-15031 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang T1 - Detecting odorous compounds emitted from building and consumer products within the European Project SysPAQ T2 - Conference Indoor Air 2008 CY - Copenhagen, Denmark DA - 2008-08-17 PY - 2008 AN - OPUS4-18012 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiegner, Katharina T1 - Investigations on VOC-emissions from oriented strand boards T2 - International Panel Products Symposium 2008 CY - Espoo, Finland DA - 2008-09-24 PY - 2008 AN - OPUS4-17980 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiegner, Katharina T1 - European Interlaboratory Study for Testing Emissions of Volatile Organic Compounds from Construction Products using Emission Test Chambers T2 - Workshop on Proficiency Testing in Analytical Chemistry, Microbiology and Laboratory Medicine CY - Rome, Italy DA - 2008-10-05 PY - 2008 AN - OPUS4-18619 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Däumling, C. T1 - Harmonisation of material emission labelling schemes in the EU T2 - Conference Indoor Air 2008 CY - Copenhagen, Denmark DA - 2008-08-17 PY - 2008 AN - OPUS4-18125 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiegner, Katharina T1 - Improvement of the OSB production process by means of micro chambers T2 - COST E49 - Processes and Performance of Wood-Based Panels CY - Istanbul, Turkey DA - 2009-04-28 PY - 2009 AN - OPUS4-19373 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias T1 - Application of a new gas mixing device to test adsorptive wall materials T2 - Healthy Buildings 2009 CY - Syracuse, NY, USA DA - 2009-09-13 PY - 2009 AN - OPUS4-19898 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mull, Birte T1 - Analytik von Bioziden in Kunst- und Kulturgut T2 - Exponatec Cologne CY - Cologne, Germany DA - 2011-11-16 PY - 2011 AN - OPUS4-24793 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mull, Birte T1 - TDS-GC-MS-Method for the determination of volatile phthalic acid esters in the air of emission test chambers T2 - Analytica Conference 2010 CY - Munich, Germany DA - 2010-03-23 PY - 2010 AN - OPUS4-21046 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tag, Mathias T1 - Study of aerosol cell exposure in an Air Liquid Interface T2 - Nanotechnology and Toxicology in Environment and Health CY - Leipzig, Germany DA - 2011-04-11 PY - 2011 N1 - Geburtsname von Tag, Mathias: Deutscher, M. - Birth name of Tag, Mathias: Deutscher, M. AN - OPUS4-23316 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiegner, Katharina T1 - Determination of MVOCs like formic and acetic acid with LC-MS/MS T2 - 15th International Biodeterioration and Biodegradation Symposium IBBS-15 CY - Vienna, Austria DA - 2011-09-19 PY - 2011 AN - OPUS4-24403 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Damberg, Klaudia T1 - Development and optimization of Methods for measurement of insecticides and higher siloxanes in Display cases T2 - Technart 2011 CY - Berlin, Germany DA - 2011-04-26 PY - 2011 AN - OPUS4-23916 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiegner, Katharina T1 - Development of a reference material for volatile organic compound emissions in test chambers T2 - EURACHEM: 7th Workshop; Proficiency testing in analytical chemistry, microbiology and laboratory medicine; Current Practice and Future Directions CY - Istanbul, Turkey DA - 2011-10-02 PY - 2011 AN - OPUS4-24448 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang T1 - Development of a reference for the measurement of S(VOC) in Emission test chambers T2 - Healthy Buildings 2012, 10th International Conference CY - Brisbane, Australia DA - 2012-07-08 PY - 2012 AN - OPUS4-27494 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias T1 - Use of emission test chambers for the determination of chemical emissions from construction materials T2 - 1st International Conference on the Chemistry of Construction Materials CY - Berlin, Germany DA - 2013-10-07 PY - 2013 AN - OPUS4-29626 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias T1 - Determination of radon exhalation from building materials using emission test chambers T2 - IAQ 2013 Environmental Health in Low Energy Buildings CY - Vancouver, Canada DA - 2013-10-15 PY - 2013 AN - OPUS4-29627 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nohr, Michael T1 - Development of a reference material for emission testing based on lacquer mixtures T2 - MACPoll Final Conference CY - Delft, Netherlands DA - 2014-05-13 PY - 2014 AN - OPUS4-30857 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brosig, Laura T1 - Applicability: Odour Measurement based on ISO 16000-28 Enhanced determination of Indoor Air Quality T2 - Indoor Air 2014 "The 13th International Conference on Indoor Air Quality and Climate" CY - Hong Kong, China DA - 2014-07-07 PY - 2014 AN - OPUS4-32912 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf T1 - ORGANIZATION AND EVALUATION OF PTS FOR THE DETERMINATION OF VOC-EMISSIONS FROM MATERIALS IN EMISSION TEST CHEMBERS T2 - 8th Eurachem Workshop on Proficiency Testing in Analytical Chemisty CY - Berlin, Germany DA - 2014-10-07 PY - 2014 AN - OPUS4-31712 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf T1 - Determination of Methanol and Ethanol in Test Chamber Air by using TDS-GC-FID T2 - Indoor Air Conference 2014 CY - Hong Kong, China DA - 2014-07-07 PY - 2014 AN - OPUS4-31341 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mull, Birte T1 - Development of a reproducibly emitting reference material for volatile organic compounds N2 - Volatile organic compounds (VOC) are ubiquitous in the indoor air, since they emit from materials used indoors. Investigations of these materials are mostly carried out in test chambers under controlled climatic conditions. Quality control of these test chamber measurements is important but there is a lack of commercially available homogenous reference materials. The approach of this study is to dope a supporting material with VOCs, which are then reproducibly released in measurable chamber air concentrations between 30 to 300 µg m ³. From several tested supporting materials vacuum grease (APIEZON M) was selected because of its very low own emissions. First tests were conducted with styrene. For the estimation of the initial emission and the emission over time FEM (finite element methods) modelling was used. Based on this, five samples with a surface of 7 cm2 and a thickness of 12 mm with a content of 1 ‰ styrene were investigated at (23 ± 2) °C and (50 ± 5) % relative humidity in the µ-chamber (3 samples) and 24 L test chambers (2 samples) for 28 days. Air samples were taken after 24 hours, 3, 7, 14, 21 and 28 days on Tenax TA® sorption tubes and analyzed by TD-GC-MS. The area specific emission rate (SERa) was calculated to compare the results from both chamber types. After 24 hours SERa was between 0.8 0.9 µg cm 2 h 1 (3800 4000 µg m 3) for the µ-chamber samples and between 0.9 1.1 µg cm 2 h 1 (300-370 µg m 3) for the 24 L test chamber samples. After 28 days the SERa was at 0.2 µg cm 2 h 1 for all samples. The relative standard deviation of the SERa was between 1 26 %. These results show the applicability of vacuum grease as supporting material and the favored starting concentration range could be achieved in the 24 L test chambers. T2 - Indoor Air 2016, the 14th international conference of Indoor Air Quality and Climate CY - Ghent, Belgium DA - 03.07.2016 KW - Emission test chamber KW - Indoor air KW - Quality assurance KW - Quality control PY - 2016 AN - OPUS4-36823 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias T1 - Indoor Air Emission Tests of Natural Materials T2 - 1st International Conference on Bio-based Buildings Materials CY - Clermont-Ferrand, France DA - 2015-06-22 PY - 2015 AN - OPUS4-33719 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brosig, Laura T1 - Applicability: Odour Measurement based on ISO 16000-28 Enhanced determination of Indoor Air Quality T2 - BAM PhD Studendts Day 2015 CY - Berlin, Deutschland DA - 2015-07-14 PY - 2015 AN - OPUS4-34411 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hofmann, Michael T1 - Determination of Radon Exhalation Rates from Construction Materials using Emission Test Chambers T2 - Healthy Buildings 2015 Europe CY - Eindhoven, Netherlands DA - 2015-05-18 PY - 2015 AN - OPUS4-34406 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf T1 - Reproducibly emitting reference material for quality assurance/quality control of emission test chamber measurements N2 - Volatile Organic Compounds (VOC) are ubiquitous in the indoor air, since they emit from materials used indoors. Investigations of these materials are mostly carried out in test chambers under controlled climatic conditions. Quality control of these test chamber measurements is important but there is a lack of commercially available homogenous reference materials as required for round robin tests or quality assurance of laboratories. The approach of the present study is the impregnation of a supporting material with VOC, which are reproducibly released in measurable chamber air concentrations under standardised test conditions. A polymer made of Thermoplastic Polyurethane (TPU) was chosen as carrier material. It was impregnated with the VOC trimethyl pentanediol isobutyrat (texanol). T2 - Healthy Buildings 2017 Europe CY - Lublin, Poland DA - 02.07.2017 KW - Emissions testing KW - Volatile organic compounds KW - Polymeric material KW - CO2 assisted impregnation PY - 2017 AN - OPUS4-42351 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wilke, Olaf T1 - Emissions of formaldehyde from acoustic tiles N2 - Acoustics is an important aspect for large rooms especially in schools, kindergartens and offices. Foam tiles made from melamine resins are often used for acoustic insulation because they show good fire resistance and good thermal insulation properties. But they can emit formaldehyde. In Germany there are cases with a resulting indoor air concentration of higher than 100 µg/m³. In this study samples from two schools and one office were investigated. Additionally, new tiles were purchased and tested to evaluate the general potential as formaldehyde source. T2 - Healthy Buildings 2017 Europe CY - Lublin, Poland DA - 02.07.2017 KW - Building products KW - Emission test chamber KW - Formaldehyde KW - Foam tiles PY - 2017 AN - OPUS4-41573 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - Reference materials for microplastics in environmental matrices N2 - The pollution of marine, limnic and terrestrial environments with plastic waste and the potential impact especially on biota and humans has received increasing attention in recent years. Special focus is on particles smaller than 5 mm, the so-called microplastics. Consequently, possible regulations of emission and remediation efforts require sound information on the occurrence and fate of microplastics in the respective environmental compartments. Microplastics (MP) differ from classical organic pollutants in biota or the environment in that they do not consist of clearly defined low-molecular weight compounds but of polymer particulates with varying sizes and chemical compositions. This leads to specific challenges regarding the analytical techniques to be employed for their identification and quantification. Microplastics are defined as polymer particle in the size range between 1 µm and 5 mm and cover a wide range of polymers such as polyethylene, polypropylene, polystyrene and polyethylene terephthalate in variable geometric shapes. Properties relevant for environmental microplastics are polymer type, particle form and size distribution, surface morphology (aging status) and total mass fraction contained in a given sample. Polymer identification and particle size estimation using optical methods (IR and Raman spectroscopy) are time consuming and complicated by surface characteristics as a result of weathering, soiling, and microbial colonisation. Total mass fractions of MP in environmental samples can be determined by thermo-analytical methods. There are currently no standardised methods for sampling, sampling preparation, or detection of MP in environmental samples. So far, qualitative and quantitative investigations are done by research institutes and have not reached the routine laboratory community. The near future will see harmonisation efforts of MP mass fraction determination in environmental matrices by thermo-analytical procedures. The immediate need for reference materials during method development and comparison is outlined with regard to relevant matrix/polymer compositions, existing regulations and currently achievable detection limits. Examples for solid environmental matrix reference materials are discussed regarding the challenges encountered with matrices and polymer types as well as homogeneity testing and property value characterisation. T2 - BERM 2018 15th International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 23 September 2018 KW - Referenzmaterialien KW - Schwebstoffe KW - Sediment KW - Polymer PY - 2018 AN - OPUS4-46209 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Even, Morgane T1 - Towards an efficient procedure for the analysis of VVOC emissions N2 - This poster summarizes the points that need to be addressed towards the standardization of an efficient procedure for the analysis of VVOC emissions: Standard mixture generation and investigations on mutual reactivity, selection of an appropriate sorbent combination, water management and choice of a suited GC column. T2 - Indoor Air 2020: The 16th conference of the international society of indoor air quality and climate CY - Online meeting DA - 01.11.2020 KW - VVOCs KW - Analytical method KW - ISO 16000-6 KW - EN 16516 PY - 2020 AN - OPUS4-52023 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ferrero, Fabio T1 - A Parametric Study of Shock Wave Simulations with Help of COMSOL Multiphysics T2 - COMSOL Conference CY - Milan, Italy DA - 2012-12-10 PY - 2012 N1 - Geburtsname von Kluge, Martin: Beckmann-Kluge, M. - Birth name of Kluge, Martin: Beckmann-Kluge, M. N1 - Geburtsname von Meyer-Scherf, Ronald: Meyer, R. - Birth name of Meyer-Scherf, Ronald: Meyer, R. AN - OPUS4-26705 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Marc Benjamin T1 - Extending Bio-SAXS measurements of Single-Stranded DNA-Binding Proteins: Radiation Protection of G5P by Cosolutes N2 - Small-angle X-ray scattering (SAXS) can be used for structural de- termination of biological macromolecules and polymers in their na- tive states. To improve the reliability of such experiments, the re- duction of radiation damage occurring from exposure to X-rays is needed.One method, is the use of scavenger molecules that protect macromolecules against radicals produced by radiation exposure.In this study we investigate the feasibility to apply the compatible solute, osmolyte and radiation protector Ectoine (THP(B)) as a scavenger throughout SAXS measurements of single-stranded DNA-binding protein Gene-V Protein (G5P/GVP). Therefore we monitor the radiation induced changes of G5P during bio-SAXS. The resulting microscopic energy-damage relation was determined by particle scattering simu- lations with TOPAS/Geant4. The results are interpreted in terms of radical scavenging as well as post-irradiation effects, related to preferential-exclusion from the protein surface. Thus, Ectoine provides an non-disturbing way to improve structure-determination of proteins via bio-SAXS in future studies. T2 - MultiChem Conference 2023 CY - Prague, Czech Republic DA - 26.04.2023 KW - Bio-SAXS KW - BioSAXS KW - Compatible solute KW - Cosolute KW - DNA KW - Dosimetry KW - Ectoin KW - Ectoine KW - Ectoin KW - G5P KW - GVP KW - Geant4 KW - Geant4-DNA KW - Gene five protein KW - Hydroxyectoine KW - Ionizing radiation damage KW - LEE KW - McSAS3 KW - Microdosimetry KW - Monte-Carlo simulations KW - OH Radical KW - OH radical scavenger KW - Osmolyte KW - Particle scattering simulations KW - Protein KW - Protein unfolding KW - Proteins KW - ROS KW - Radiation damage KW - Radical Scavenger KW - Radical scavenger KW - SAXS KW - Single-stranded DNA-binding proteins KW - Small-angle xray scattering KW - Topas KW - Topas-MC KW - Topas-nBio KW - X-ray scattering KW - ssDNA KW - Median lethal energy deposit PY - 2023 AN - OPUS4-57407 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Marc Benjamin T1 - BP150: Bio-SAXS of single-stranded DNA-binding proteins: Radiation protection by the compatible solute ectoine N2 - Small-angle X-ray scattering (SAXS) can be used for structural determination of biological macromolecules and polymers in their native states (e.g. liquid phase). This means that the structural changes of (bio-)polymers, such as proteins and DNA, can be monitored in situ to understand their sensitivity to changes in chemical environments. In an attempt to improve the reliability of such experiments, the reduction of radiation damage occurring from exposure to X-rays is required. One such method, is to use scavenger molecules to protect macromolecules against radicals produced during radiation exposure, such as reactive oxygen species (ROS). In this study we investigate the feasibility of applying the compatible solute, osmolyte and radiation protector Ectoine (THP(B)), as a scavenger molecule during SAXS measurements of the single-stranded DNA-binding protein Gene-V Protein (G5P/GVP). In this case, we monitor the radiation induced changes of G5P during bio-SAXS measurments and the resulting microscopic energy-damage relation was determined from microdosimetric calculations by Monte-Carlo based particle scattering simulations with TOPAS/Geant4 and a custom target-model. This resulted in a median-lethal energy deposit of pure G5P at 4 mg mL−1 of E1/2 = 7 ± 5 eV, whereas a threefold increase of energy-deposit was needed under the presence of Ectoine to reach the same level of damage. This indicates that Ectoine increases the possible exposure time before radiation-damage to G5P is observed. Furthermore, the dominant type of damage shifted from aggregation in pure solutions towards a fragmentation for solutions containing Ectoine as a cosolute. These results are interpreted in terms of indirect radiation damage by reactive secondary species, as well as post-irradiation effects, related to preferential-exclusion of the cosolute from the protein surface. Hence, Ectoine is shown to provide a non-disturbing way to improve structure-determination of proteins via bio-SAXS in future studies. T2 - DPG Frühjahrstagung CY - Dresden, Germany DA - 26.03.2023 KW - Bio-SAXS KW - BioSAXS KW - Compatible solute KW - Cosolute KW - DNA KW - Dosimetry KW - Ectoin KW - Ectoine KW - G5P KW - GVP KW - Gene five protein KW - Geant4 KW - Geant4-DNA KW - Hydroxyectoine KW - Ionizing radiation damage KW - LEE KW - McSAS3 KW - Microdosimetry KW - Monte-Carlo simulations KW - OH Radical KW - OH radical scavenger KW - Osmolyte KW - Particle scattering simulations KW - Protein KW - Proteins KW - Protein unfolding KW - ROS KW - Radiation damage KW - Radical Scavenger KW - SAXS KW - Single-stranded DNA-binding proteins KW - Small-angle xray scattering KW - Topas KW - Topas-MC KW - Topas-nBio KW - X-ray scattering KW - Radical scavenger KW - ssDNA PY - 2023 AN - OPUS4-57254 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Marc Benjamin T1 - Bio-SAXS of single-stranded DNA-binding proteins: Radiation protection by the compatible solute ectoine N2 - Small-angle X-ray scattering (SAXS) can be used for structural determination of biological macromolecules and polymers in their native states (e.g. liquid phase). This means that the structural changes of (bio-)polymers, such as proteins and DNA, can be monitored in situ to understand their sensitivity to changes in chemical environments. In an attempt to improve the reliability of such experiments, the reduction of radiation damage occurring from exposure to X-rays is required. One such method, is to use scavenger molecules to protect macromolecules against radicals produced during radiation exposure, such as reactive oxygen species (ROS). In this study we investigate the feasibility of applying the compatible solute, osmolyte and radiation protector Ectoine (THP(B)), as a scavenger molecule during SAXS measurements of the single-stranded DNA-binding protein Gene-V Protein (G5P/GVP). In this case, we monitor the radiation induced changes of G5P during bio-SAXS measurments and the resulting microscopic energy-damage relation was determined from microdosimetric calculations by Monte-Carlo based particle scattering simulations with TOPAS/Geant4 and a custom target-model. This resulted in a median-lethal energy deposit of pure G5P at 4 mg mL−1 of E1/2 = 7 ± 5 eV, whereas a threefold increase of energy-deposit was needed under the presence of Ectoine to reach the same level of damage. This indicates that Ectoine increases the possible exposure time before radiation-damage to G5P is observed. Furthermore, the dominant type of damage shifted from aggregation in pure solutions towards a fragmentation for solutions containing Ectoine as a cosolute. These results are interpreted in terms of indirect radiation damage by reactive secondary species, as well as post-irradiation effects, related to preferential-exclusion of the cosolute from the protein surface. Hence, Ectoine is shown to provide a non-disturbing way to improve structure-determination of proteins via bio-SAXS in future studies. T2 - #RSCposter 2023 CY - Online meeting DA - 28.02.2023 KW - Bio-SAXS KW - BioSAXS KW - Cosolute KW - DNA KW - Dosimetry KW - Ectoin KW - Ectoine KW - G5P KW - GVP KW - Geant4 KW - Geant4-DNA KW - Ionizing radiation damage KW - LEE KW - McSAS3 KW - Microdosimetry KW - Monte-Carlo simulations KW - OH Radical KW - OH radical scavenger KW - Particle scattering simulations KW - Protein KW - Protein unfolding KW - Radiation damage KW - Radical Scavenger KW - SAXS KW - Single-stranded DNA-binding proteins KW - Small-angle xray scattering KW - Topas KW - Topas-MC KW - Topas-nBio KW - X-ray scattering KW - ssDNA KW - Osmolyte KW - Hydroxyectoine KW - Compatible solute KW - ROS KW - radical scavenger PY - 2023 UR - https://pubs.rsc.org/en/content/articlehtml/2023/cp/d2cp05053f AN - OPUS4-57064 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neugum, Tim T1 - Fire tests on HPC columns with and without restraint N2 - Usually, the fire resistance of load-bearing structural elements is determined based on testing of separate members. In this test method, a mechanical load is applied to the member in a force-controlled manner and is held constant throughout the fire test. After applying the mechanical load, the thermal exposure begins according to the ISO 834 fire curve. In this conventional test method, no interaction between the member and the entire building structure is considered. In buildings, the surrounding structure can restrain the thermal expansion of a member in case of fire. This may have both positive and negative effects on the fire resistance of this structural element. T2 - CrossFire – Advanced Structural Fire Engineering at intersections among disciplines CY - Como, Italy DA - 26.05.2025 KW - Substructure method KW - Structural interaction KW - Fire resistance KW - Column KW - Concrete PY - 2025 AN - OPUS4-63351 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiz Eddin, Ahmad T1 - Fire induced spalling behaviour of CFRP-reinforced concrete N2 - Fire tests on CFRP-reinforced concrete elements without and with various protection measures to prevent spalling are presented. The protection measures include the application of an intumescent coating to the fire exposed surface as well as the use of a modified concrete mixture containing polypropylene fibres (PP-fibres). T2 - CrossFire School CY - Como, Italy DA - 26.05.2025 KW - Concrete spalling KW - CFRP KW - Polypropylene fibres KW - Intumescent coating PY - 2025 AN - OPUS4-63349 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertovic, Marija T1 - Empfehlungen für die Akzeptanz von Mensch-KI-Systemen in der ZfP N2 - Die Einführung von künstlicher Intelligenz (KI) in Technologien der zerstörungsfreien Prüfung (ZfP) bietet ein großes Potenzial zur Steigerung von Effizienz und Zuverlässigkeit. Gleichzeitig bestehen jedoch erhebliche Herausforderungen in der Mensch-Maschine-Interaktion (MMI), die für eine erfolgreiche und sichere Umsetzung bewältigt werden müssen. Der DGZfP-Unterausschuss „Mensch-Maschine-Interaktion (UA MMI)“ im Fachausschuss „ZfP 4.0“ beschäftigt sich damit, diese Herausforderungen zu identifizieren und praktische Empfehlungen für das Design von MMI-Systemen zu entwickeln. Zu den identifizierten Herausforderungen gehören das Vertrauen in und die Akzeptanz von KI-Systemen, die kognitive Belastung in Mensch-KI-Konstellationen, das Design von Interaktionsprozessen für eine effektive Zusammenarbeit und die Zuverlässigkeit des Gesamtsystems aus Mensch und KI. Um diesen Herausforderungen zu begegnen, werden Anforderungen an MMI-Systeme formuliert, die Aspekte wie erklärbare KI, ergonomische Benutzeroberflächen und Benutzerfreundlichkeit berücksichtigen. Weitere Empfehlungen umfassen benutzerorientiertes Design, Aufgabenteilung zwischen Mensch und KI, Ausbildung des Personals und die Bewertung der Zuverlässigkeit des gesamten Mensch-KI-Systems. Das Ziel dieses Beitrags ist es, das Bewusstsein für die Notwendigkeit eines menschenzentrierten Designs von KI-Technologien in der ZfP zu schärfen und praktische Empfehlungen zur Bewältigung der damit verbundenen Herausforderungen zu geben, um so zu einer sicheren, effizienten und menschenzentrierten Einführung von KI-Technologien in der ZfP beizutragen, die von zukünftigen Anwendern akzeptiert wird. T2 - DGZfP-Jahrestagung 2025 CY - Berlin, Germany DA - 26.05.2025 KW - Zerstörungsfreie Prüfung KW - Künstliche Intelligenz KW - Artificial intelligence KW - Mensch-Maschine-Interaktion KW - Non-Destructive Testing KW - Human-Machine-Interaction KW - Acceptance PY - 2025 AN - OPUS4-63410 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - Gas Tomography Up In The Air! N2 - In this paper, we present an autonomous aerial robot to reconstruct tomographic 2D slices of gas plumes in outdoor environments. Our platform, the so-called Unmanned Aerial Vehicle for Remote Gas Sensing (UAV-REGAS) combines a lightweight Tunable Diode Laser Absorption Spectroscopy (TDLAS) sensor with a 3-axis aerial stabilization gimbal for aiming on a versatile octocopter. The TDLAS sensor provides integral gas concentration measurements but no information regarding the distance traveled by the laser diode's beam or the distribution of the gas along the optical path. We complemented the set-up with a laser rangefinder and apply principles of Computed Tomography (CT) to create a model of the spatial gas distribution from these integral concentration measurements. To allow for a rudimentary ground truth evaluation of the applied gas tomography algorithm, we set up a unique outdoor test environment based on two 3D ultrasonic anemometers and a distributed array of 10 infrared gas transmitters. We present first results showing the 2D plume reconstruction capabilities of the system under realistic conditions. T2 - IEEE Sensors 2018 CY - New Delhi, India DA - 28.10.2018 KW - Aerial robot KW - TDLAS KW - Gas tomography KW - Plume PY - 2018 AN - OPUS4-46478 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - Bringing Mobile Robot Olfaction to the Next Dimension – UAV-based Remote Sensing of Gas Clouds and Source Localization N2 - This presentation introduces a novel robotic platform for aerial remote gas sensing. Spectroscopic measurement methods for remote sensing of selected gases lend themselves for use on mini-copters, which offer a number of advantages for inspection and surveillance. No direct contact with the target gas is needed and thus the influence of the aerial platform on the measured gas plume can be kept to a minimum. This allows to overcome one of the major issues with gas-sensitive mini-copters. On the other hand, remote gas sensors, most prominently Tunable Diode Laser Absorption Spectroscopy (TDLAS) sensors have been too bulky given the payload and energy restrictions of mini-copters. Here, we introduce and present the Unmanned Aerial Vehicle for Remote Gas Sensing (UAV-REGAS), which combines a novel lightweight TDLAS sensor with a 3-axis aerial stabilization gimbal for aiming on a versatile hexacopter. The proposed system can be deployed in scenarios that cannot be addressed by currently available robots and thus constitutes a significant step forward for the field of Mobile Robot Olfaction (MRO). It enables tomographic reconstruction of gas plumes and a localization of gas sources. We also present first results showing the gas sensing and aiming capabilities under realistic conditions. T2 - IEEE International Conference on Robotics and Automation (ICRA) CY - Singapore DA - 29.05.2017 KW - Tunable Diode Laser Absorption Spectroscopy (TDLAS) KW - 3-axis gimbal KW - Mobile Robot Olfaction KW - Tomographic reconstruction of gas plumes KW - Localization of gas sources KW - Aerial platform PY - 2017 AN - OPUS4-40547 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ebell, Gino T1 - Potentialfeldmessung N2 - In der Regel ist die korrosive Beanspruchung der Bewehrung von Stahlbetonbauwerken der lebensdauerbestimmende Faktor eines Bauwerkes.Für die Instandsetzung eines Bauwerkes ist es somit entscheidend im Vorfeld ein Messverfahren zu verwenden das aktive Korrosion detektieren kann, um somit den Umfang von Instandsetzungsmaßnahmen zielgerichtet planen zu können. T2 - DBV-Arbeitstagung CY - Berlin, Germany DA - 01.12.2016 KW - Potentialfeldmessung KW - Korrosion PY - 2016 AN - OPUS4-38576 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meinel, Dietmar T1 - Classic Materials Testing in the Light of CT N2 - Currently, mandatory requirements and recommendations for the detection of irregularities in laser beam welded joints are based on classic micrographs as set out in the standard ISO 13919-1:2019. Compared to classic micrographs, computed tomography enables a non-destructive, three-dimensional and material-independent mode of operation, which delivers much more profound results. Even in building material testing, methods with limited informative value can be checked and supplemented by CT examinations. T2 - 13th International Conference on Industrial Computed Tomography (iCT2024) CY - Wels, Austria DA - 06.02.2024 KW - Computed Tomography KW - Additive Manufacturing KW - Machine-Learning Segmentation KW - Air Void System PY - 2024 AN - OPUS4-59568 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartholmai, Matthias A1 - Johann, Sergej A1 - Wu, Cheng-Chieh T1 - Airborne remote gas sensing and mapping N2 - Leaking methane (CH4) from infrastructures, such as pipelines and landfills, is critical for the environment but can also pose a safety risk. To enable a fast detection and localization of these kind of leaks, we developed a novel robotic platform for aerial remote gas sensing. Spectroscopic measurement methods for remote sensing of selected gases lend themselves for use on mini-copters, which offer a number of advantages for inspection and surveillance over traditional methods. No direct contact with the target gas is needed and thus the influence of the aerial platform on the measured gas plume can be kept to a minimum. This allows to overcome one of the major issues with gas-sensitive mini-copters. On the other hand, remote gas sensors, most prominently Tunable Diode Laser Absorption Spectroscopy (TDLAS) sensors have been too bulky given the payload and energy restrictions of mini-copters. Here, we present the Unmanned Aerial Vehicle for Remote Gas Sensing (UAV-REGAS), which combines a novel lightweight TDLAS sensor with a 3-axis aerial stabilization gimbal for aiming on a versatile hexacopter. The proposed system can be deployed in scenarios that cannot be addressed by currently available robots and thus constitutes a significant step forward for the field of Mobile Robot Olfaction (MRO). It enables tomographic reconstruction of gas plumes and a localization of gas sources. We also present first results showing its performance under realistic conditions. T2 - 5th International Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures (SMAR 2019) CY - Potsdam, Germany DA - 27.08.2019 KW - Localization of gas sources KW - Mobile Robot Olfaction KW - Tomographic reconstruction of gas plumes KW - Tunable Diode Laser Absorption Spectroscopy (TDLAS) KW - UAV-REGAS PY - 2017 AN - OPUS4-48789 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Romero Navarrete, Jose Antonio T1 - Experimental methods for road tankers. A critical review (IMECE2020-23069) N2 - Still experimental modelling is necessary to assess the effects of all of the influential factors. T2 - IMECE 2020 CY - Online meeting DA - 16.11.2020 KW - Road KW - Tanker KW - Methods PY - 2020 AN - OPUS4-51638 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schubert, Sven T1 - BAM-GGR 023 - Ageing Management for CA Approved RAM Transport Packages N2 - The consideration of ageing mechanisms is with integration into the IAEA-requirements now obligatory for the design of transport packages. For packages intended to be used for shipment after storage the consideration of the effects of ageing mechanisms during storage in safety analyses and the implementation of corresponding instructions for operation and maintenance are required. Therefore, these packages have been maintained during storage in a manner that all requirements specified in the IAEA-requirements and in the applicable certificates of approval have been fulfilled. BAM is the competent authority in Germany for evaluating the thermal and mechanical design of packages for the transport of radioactive materials. In this context, BAM also evaluates the aging mechanisms and aging effects occurring during the long-term storage period of such transport packages. BAM has developed a guideline for the implementation of ageing assessment and of the measures for ageing management into the approval procedure based on IAEA-requirements. The goal of the presented paper is to introduce this guideline and the general approach for ageing management requirements and to describe the application to a specific package design. The type and amount of the ageing management not only depend on the use of the packaging, but also on the accessibility of the components that are considered in the ageing assessment. The different operating phases of a packaging are considered for the ageing assessment, such as loading, interim storage or transport. The implementation of measures for ageing management is divided into three levels – systemic measures, package design related measures and documentation. The systemic measures are attributed to the general management system and define the whole activities for organization of ageing management like structure, responsibilities, documentation, reports and evaluation. The package design related measures are defined in an ageing management plan. These measures shall ensure that the anticipated changes of the package design under consideration of ageing effects still complies with the design approval specification. Therefore, an ageing surveillance program and, if necessary, a gap analysis program shall be developed. The ageing management documentation ensures the continuous documentation of the compliance of a specific package to the approved package design, comprising mainly records resulting from operation and surveillance. T2 - RAMTRANS 2024 CY - London, United Kingdom DA - 15.05.2024 KW - Radioactive Materials KW - Ageing Management KW - Transport Packages KW - Dual Purpose Casks PY - 2024 AN - OPUS4-60177 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank A1 - Romero Navarrete, J. A. T1 - Experimental Assessing of the Energy Transformation in Turns N2 - Turning maneuvers of rail vehicles involve demanding situations for the infrastructure because of the steering forces generated and the resultant lateral load transfers. Such forcing situation involves increased tangential forces that consume kinetic energy from the vehicle. While much attention has been paid in the literature to the damage in such infrastructure segments, the energy that is dissipated in these maneuvers, has not been explicitly addressed. In this paper, a specialized scale-down infrastructure is used to characterize the effect of the initial speed of the vehicle and its mass, on the magnitude of both the rail forces developed and the amount of dissipated energy during turning maneuvers. The outputs of the experiments suggest that most of the original kinetic energy is dissipated at the first portion of the turn. Also, that the magnitude of the wheel forces and the amount of dissipated energy, correlate. That is, a greater rail damage would correspond to greater energy dissipation. T2 - IMECE2022 CY - Columbus, OH, USA DA - 30.10.2022 KW - Energy dissipation KW - Turning maneuvers KW - Rail damage KW - Experimental approaches PY - 2022 AN - OPUS4-56333 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinelt, Manuel T1 - Feasibility Study on the Direct Detection of Per- and Polyfluoroalkyl Substances (PFAS) with Surface-Assisted Flowing Atmospheric-Pressure Afterglow Mass Spectrometry (SA-FAPA-MS) N2 - Per- and polyfluoroalkyl substances (PFAS) are a large class of thousands of synthetic chemicals that are used worldwide. However, growing environmental and human health concerns in the last two decades have led to more stringent regulatory requirements and the development of quantitative analytical methods for PFAS detection. Today, standardized and powerful methods exist, e.g., for the determination of PFAS in water, sludge, compost, soil, and drinking water (DIN 38407-42, DIN 38414-14, ISO 21675, and DIN EN 17892). While liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) is often used, blank levels, sample preparation, and total analysis times can be challenging. [1] Here, ambient desorption/ionization mass spectrometry (ADI-MS) is considered interesting because it requires only minimal sample preparation and was able to reduce total analysis time in other types of applications. [2] Previously, we used a plasma-based pin-to-capillary flowing atmospheric-pressure afterglow source (FAPA) [3] to probe samples directly from thin-layer chromatography (TLC) plates and to perform quantitative analysis and mass spectral imaging [4]. In this work, a feasibility study for the direct detection of PFAS with FAPA-MS is reported. Selected PFAS samples were directly probed on functionalized TLC surfaces (normal-phase silica, reversed-phase-modified silica, cyano [CN]-modified silica, and dimethyl [RP2]-modified silica, diol modified silica, and amino [NH2]-modified silica). The suitability of the surfaces was evaluated and the compatibility of different solvents with the surfaces was studied. CN-HPTLC and RP2-TLC surfaces showed the best performance for direct PFAS detection with FAPA-MS. In addition, direct analysis of PFAS mixtures and selected matrices was performed with little sample preparation and short analysis time. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Mass Spectrometry KW - FAPA-MS KW - Instrumentation KW - PFAS KW - Surface Analysis PY - 2025 AN - OPUS4-63605 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dabah, Eitan T1 - Hydrogen trapping and dissolution behavior dependent on microstructure of duplex steels T2 - International Hydrogen Conference 2012 CY - Jackson, WY, USA DA - 2012-09-09 PY - 2012 AN - OPUS4-27543 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kromm, Arne A1 - Schröpfer, Dirk T1 - From the Field to the Lab: Assessment of Residual Stresses in real-life Welded Components N2 - Residual stresses are crucial when assessing the performance of welded components. The present work deals with the possibilities of transferring the real-life boundary conditions of welding, which influence the residual stress, into the laboratory. The possibilities of a test system specifically developed for this purpose with a maximum load capacity of 2 MN are shown. Due to the structural design, global process, geometry and material-dependent stresses are induced, which can be simulated and quantified within the system. Additionally, X-ray diffraction can be applied to determine the resulting local residual stress distribution precisely with high spatial resolution. Examples are presented how the conditions to be found during production are simulated in the laboratory. It is shown how welding residual stresses in high-strength steels are affected by the heat control. It was possible to clarify why elevated working temperatures significantly increase the tensile residual stresses in the heat affected zone (HAZ). The effect of a heat treatment applied under mechanical stress resulting from welding is demonstrated by the example of a creep resistant steel. Reheat cracking is significantly increased in this case compared to small scale laboratory based tests. T2 - European Conference on Residual Stresses - ECRS10 CY - Leuven, Belgium DA - 11.09.2018 KW - Welding KW - Residual stress KW - Large scale test PY - 2018 AN - OPUS4-45978 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Altenburg, Simon T1 - Comparison of MWIR and NIR thermography in a laser metal deposition (LMD) process N2 - Additive manufacturing (AM) offers a range of novel applications. However, the manufacturing process is complex and the production of defect-free parts with a high reliability is still a challenge. Thermography is a valuable tool for process surveillance, especially in metal AM processes. The high process temperatures allow one to use cameras usually operating in the visible spectral range. Here, we compare the results of first measurements during the manufacturing process of a commercial laser metal deposition (LMD) setup using a MWIR camera with those from a VIS high-speed camera with band pass filter in the NIR range. T2 - 14th Quantitative InfraRed Thermography Conference CY - Berlin, Germany DA - 25.06.2018 KW - Thermography KW - Additive manufacturing KW - Laser metal deposition KW - ProMoAM PY - 2018 AN - OPUS4-45408 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Altenburg, Simon T1 - Thermography in metal AM: Comparison of high-speed NIR thermography and MWIR thermography N2 - Additive manufacturing (AM) opens the route to a range of novel applications.However, the complexity of the manufacturing process poses a challenge for the production of defect-free parts with a high reliability. Since process dynamics and resulting microstructures of AM parts are strongly influenced by the involved temperature fields, thermography is a valuable tool for process surveillance. The high process temperatures in metal AM processes allow one to use cameras usually operating in the visible spectral range to detect the thermally emitted radiation from the process. In our work, we compare the results of first measurements during the manufacturing processes of a commercial laser metal deposition (LMD) setup and a laser beam melting (LBM) setup using a MWIR camera with those from a VIS high-speed camera with band pass filter in the NIR range. T2 - Additive Manufacturing Benchmarks 2018 CY - Gaithersburg, MA, USA DA - 18.06.2018 KW - Thermography KW - Additive manufacturing KW - Laser metal deposition KW - Laser beam melting KW - ProMoAM PY - 2018 AN - OPUS4-45401 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Martin T1 - Assessment of Quality Management for Transport Packages not requiring Authority Design Approval N2 - The poster presents the german approach for the assessment of quality management systems for transport packages for radioactive material not requiring authority design approval. As legal basis the IAEA regulations, the ADR as well as the GGVSEB are highlighted and examples for these transport packages are given. The GGR 016 is mentioned, main duties and responsibilities as well as the manufacturing and quality surveillance system are described. T2 - 11th International Conference on the Transport, Storage and Disposal of Radioactive Materials CY - London, UK DA - 15.05.2018 KW - Quality KW - Type A KW - Competent authority PY - 2018 AN - OPUS4-45095 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinelt, Manuel T1 - Feasibility Study on the Direct Detection of Per- and Polyfluoroalkyl Substances (PFAS) with Surface-Assisted Flowing Atmospheric-Pressure Afterglow Mass Spectrometry (SA-FAPA-MS) N2 - Per- and polyfluoroalkyl substances (PFAS) are a large class of thousands of synthetic chemicals that are used worldwide. However, growing environmental and human health concerns in the last two decades have led to more stringent regulatory requirements and the development of quantitative analytical methods for PFAS detection. Today, standardized and powerful methods exist, e.g., for the determination of PFAS in water, sludge, compost, soil, and drinking water (DIN 38407-42, DIN 38414-14, ISO 21675, and DIN EN 17892). While liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) is often used, blank levels, sample preparation, and total analysis times can be challenging. [1] Here, ambient desorption/ionization mass spectrometry (ADI-MS) is considered interesting because it requires only minimal sample preparation and was able to reduce total analysis time in other types of applications. [2] Previously, we used a plasma-based pin-to-capillary flowing atmospheric-pressure afterglow source (FAPA) [3] to probe samples directly from thin-layer chromatography (TLC) plates and to perform quantitative analysis and mass spectral imaging [4]. In this work, a feasibility study for the direct detection of PFAS with FAPA-MS is reported. Selected PFAS samples were directly probed on functionalized TLC surfaces (normal-phase silica, reversed-phase-modified silica, cyano [CN]-modified silica, and dimethyl [RP2]-modified silica, diol modified silica, and amino [NH2]-modified silica). The suitability of the surfaces was evaluated and the compatibility of different solvents with the surfaces was studied. CN-HPTLC and RP2-TLC surfaces showed the best performance for direct PFAS detection with FAPA-MS. In addition, direct analysis of PFAS mixtures and selected matrices was performed with little sample preparation and short analysis time. T2 - 56th Annual Conference of the DGMS CY - Göttingen, Germany DA - 04.03.2025 KW - FAPA-MS KW - Instrumentation KW - Mass Spectrometry KW - PFAS KW - Surface Analysis PY - 2025 AN - OPUS4-63643 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schütz, Désirée A.-M. T1 - Feasibility Study on the Adsorption of Environmental Contaminants onto Fresh and Aged Microplastics N2 - Microplastics (MPs) refer to plastic particles, fibers, or beads with sizes ranging from 100 nm to 5 mm in size. Their pervasive distribution as environmental contaminants have escalated into a significant global concern. Primary MPs are intentionally produced particles for industrial and commercial applications, such as exfoliants in personal care and cosmetic formulations. In contrast, secondary MPs are generated through the fragmentation and degradation of larger plastic materials, due to environmental weathering processes. [1] Due to their high surface area-to-volume ratio and hydrophobic nature, MPs have the potential to serve as vectors for the accumulation and transport of diverse organic contaminants, including polycyclic aromatic hydrocarbons (PAHs), perfluoroalkyl substances (PFAS), pharmaceuticals and personal care products (PPCPs), as well as trace metals such as silver, cadmium, chromium, and copper. In the environmental, MPs are subject to aging processes driven by factors such as temperature, ultraviolet radiation, oxygen, and chemical interactions with environmental toxins. This aging can induce significant alterations in their physicochemical properties, which, in turn, can affect the adsorption behavior. [2] Classical and alternative analytical methods such as high-performance liquid chromatography (HPLC) and ambient desorption/ionization high-resolution mass spectrometry (ADI-HR-MS) can help to study the adsorption potential. ADI-HR-MS allows rapid sample analysis with minimal preparation, providing results in under a minute, much faster than traditional chromatographic techniques. [3] This study aims to investigate the influence of aging and particle size on the ability of microplastics to act as vectors for environmental contaminants. Microplastics were prepared in-house and subjected to controlled aging conditions for 12, 24, 36, and 48 hours. Subsequently, the aged MPs were exposed in plastic-free containers to model solutions to simulate co-contaminants in the environment. Adsorption onto synthesized secondary microplastics, varying in size and aging status, was investigated at different time intervals with ambient MS and time-of-flight secondary ion mass spectrometry. T2 - 56th Annual Conference of the DGMS CY - Göttingen, Germany DA - 04.03.2025 KW - FAPA-MS KW - Mass Spectrometry KW - Microplastics KW - Surface Analysis KW - TOF-SIMS PY - 2025 AN - OPUS4-63644 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang A1 - Müller, Birgit T1 - Low-odour and low-emission indoor products - Nose vers. odour threshold values N2 - To achieve good air quality in buildings, it is necessary to remove, avoid or reduce cleaning loads through ventilation. To reduce the cleaning loads and their effect on the odour perception of the occupants, a sensory test in indoor spaces and on building products is necessary in addition to VOC emission measurements of the contaminants. ISO 16000-28 provides the basis for odour assessment of products using a human olfactory panel. Through many years of experience and testing of these methods, it can now be assumed that reproducible odour ratings are available for many products used indoors. An odour measurement is mandatory for the Blue Angel for carpets and is being tested for environmentally friendly resilient floor coverings. Based on the results of an earlier project and new results of the upcoming study, the ISO should be revised and completed. The project investigates the odour and VOC emissions of building products based on natural raw materials. The data generated is used to address several issues, which are briefly explained below. Floor coverings based on linoleum and rubber are included in the Blue Angel eco-label with an odour assessment. The aim of the project is to clarify whether other assessment methods in addition to intensity can provide better information. Positive hedonics have an influence on the intensity assessment. Typically, building products show high intensity with low hedonic values. Results for wood-based products often show high intensity and positive hedonics. Based on these examples, an appropriate odour assessment of wood-based products for the Blue Angel, supported by research results, should be possible. The concept of the odour guide value which is based on odour threshold values was renewed in 2023. This approach will now be compared with the standardised odour measurement (16000-28). This assessment is based on GC/MS measurements and uses odour thresholds analytically when panel-based odour assessment is not possible. For this procedure well defined odour thresholds are necessary T2 - AIRMON 2025 The 11th International Symposium on Modern Principles of Air Monitoring and Biomonitoring. CY - Loen, Norway DA - 15.06.2025 KW - Emission KW - Indoor air quality KW - Materials emissions test KW - VOC KW - Geruch PY - 2025 UR - https://stami.no/en/wp-content/uploads/sites/2/2025/06/Programhefte-Airmon-2025-Juni-10-YTH.pdf AN - OPUS4-63634 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang A1 - Klein, Luise A1 - Bethke, Robert T1 - Determination of uptake rates of VVOCs and carbonyls in indoor air on passive sampling system N2 - The identity and concentration of volatile contaminants are important factors in ensuring a healthy indoor environment. Volatile organic compounds (VOCs) in indoor air can be determined by using passive samplers that are exposed to the air for a well-defined period of time. This sampling method is often used in environmental surveys, e.g. the German Environmental Survey (GerES). Conclusions about indoor air concentrations can be drawn from substance and adsorption material specific uptake rates. For the assessment of indoor air quality, highly volatile organic compounds may also be substantial, but for many of these substances realistic uptake rates and suitable analytical methods are lacking. A small chamber is used to generate gas atmospheres with constant concentrations of the analytes at 23 °C and 50 % relative humidity. For a large number of compounds, a very small flow of pure liquid VVOCs is introduced into the chamber via a syringe pump and mixed with a constant flow of clean and humidified air. A gas mixture from cylinders is also used for this purpose. Carbograph 5TD has already been proven as a suitable sorption material for active sampling for most of VVOCs. With this procedure up to 55 different VVOCs should be tested in this study. Stable concentrations of gas phase atmospheres of the first group of VVOCs (acetone, 2-butanone, methyl acrylate) were produced for exposure of passive samplers. Comparison of different adsorbent materials showed that Carbograph 5TD was the most suitable for passive sampling of these substances, with higher uptake than Carbopack X and Tenax® TA. Very strong adsorbents are not suitable for this experimental design as it adsorbs larger amounts of water. The effective uptake rates were calculated for the first three VVOCs on Carbograph 5TD tubes and an exposure time of 7 days. The same experiment will be performed for all VVOCs and ideally one material should be the best option for all of them. T2 - AIRMON 2025 The 11th International Symposium on Modern Principles of Air Monitoring and Biomonitoring. CY - Loen, Norway DA - 15.06.2025 KW - VVOC KW - Air quality KW - Passive sampling PY - 2025 UR - https://stami.no/en/wp-content/uploads/sites/2/2025/06/Programhefte-Airmon-2025-Juni-10-YTH.pdf AN - OPUS4-63632 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kromm, Arne T1 - Anwendung des neuen Controlled Tensile Weldability (CTW) Tests zur Untersuchung der Heißrissneigung T2 - Tagung Werkstoffprüfung CY - Bad Neuenahr, Germany DA - 2009-12-07 PY - 2009 AN - OPUS4-20658 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bretz, S. T1 - Materialwissenschaftliche Analysen an Hinterglasbildern T2 - Jahrestagung Archäometrie und Denkmalpflege 2004 CY - Mannheim, Germany DA - 2004-10-06 PY - 2004 AN - OPUS4-4994 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quackatz, Lukas T1 - Measurement of hydrogen concentration in steels by laser-induced breakdown spectroscopy (LIBS) N2 - Current efforts to achieve lightweight construction and the required reduction in CO2 emissions and an increase in energy and resource efficiency call for the increasing use of high-strength fine-grain structural steels. However, as the strength of higher-strength fine-grain structural steels increases, so do the associated joining challenges. Particular attention must be paid to hydrogen-assisted cold cracking. The influence of hydrogen reveals itself less in the strength but has a significant effect on the deformability [1, 2]. The degradation of the material properties can lead to zero ductility, where the values of the yield strengths coincide with the tensile strengths. Laser-induced breakdown spectroscopy (LIBS) is a spectroscopic technique that can be used to determine elemental compositions without pre-treatment of the samples. Short, high-energy laser pulses ablate a small volume (< 0.1 mm3) of the examined material and ionize it to form a plasma. The decaying plasma emits element-specific light. This light is spectroscopically analysed and allows to detect qualitatively the present elements and to quantify them with help of a standardization routine. The simple experimental set-up and the fast, nearly non-destructive analysis procedure characterize the LIBS analysis. The LIBS method allows a time and spatially resolved in situ measurement of steel components in use. Even low hydrogen concentrations (~ 1 wt.-ppm) in steel can be measured with the LIBS method and can be quantified with help of certified reference materials. The results are compared with results gained with the well-established carrier gas hot extraction method. T2 - MaterialsWeek 2021 CY - Online Meeting DA - 07.09.2021 KW - LIBS KW - Hydrogen KW - Stainless steel KW - Diffusion PY - 2021 AN - OPUS4-53234 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Thoralf T1 - Long term corrosion behavior of stainless steel in maritime atmosphere N2 - In the context of a research project carried out by BAM, nine different steel alloys were exposed to maritime environmental conditions at the German Island of Helgoland over a period of five years and their corrosion behavior was compared and evaluated. In order to evaluate the influence of a possible concentration of corrosion specific crucial air constituents on the investigated steel grades, a series of sample surfaces were freely exposed to the we ather while other samples were protected from direct rain in a covered area. The parallel investigation of four different surface finishes (cold rolled, dry grinded, electro-polished, blasted) of the respective alloys also made it possible to take account of the specific influences and features of the surface finish during the material comparison. On the basis of the results of the natural exposure tests, conclusions were drawn about the influence of the alloy composition, the surface finish and the exposure time under maritime conditions. The samples of the three investigated duplex alloys exhibited the best corrosion resistance under the given maritime environmental conditions over the five-year period, both with and without crevice geometry. Likewise, the molybdenum alloy ferrite 1.4521 could achieve comparable corrosion resistance as the austenitic standard materials 1.4301 and 1.4404. The results on the freely exposed surfaces showed, that due to the washing effect the influence of the exposure time on the corrosion of the samples is low while the particular surface finish has a great influence on the overall corrosion behavior of the stainless steels. Thus, the electro-polished surfaces showed few signs of corrosion while the blasted surfaces exhibited very poor corrosion behavior. In the case of the covered specimens, the respective material-specific corrosion resistance as well as the exposure time have a significant influence on the corrosion behavior while the surface finishes were of marginal importance. T2 - EuroCorr 2017 CY - Prague, Czech Republic DA - 03.09.2017 KW - Corrosion KW - Maritime atmosphere KW - Stainless steel PY - 2017 AN - OPUS4-41859 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Ben T1 - Zustandsüberwachung von Composite-Druckgefäßen mit faseroptischer Sensorik N2 - Einsatz der Faseroptik zur Zustandsüberwachung von Composite-Druckgefäßen. Aufbau, Integration, Messergebnisse. T2 - Follow-up Workshop on Statistical Safety Assessment of Composite Cylinders CY - Berlin, Germany DA - 05.10.2016 KW - Faseroptik KW - Zustandsüberwachung KW - Composite-Druckgefäße PY - 2016 AN - OPUS4-39088 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behrens, H. A1 - Deubener, J. A1 - Müller, Ralf T1 - Impact of structure and relaxation on fatigue and micro-mechanical properties of oxide glasses: the role of volatiles and bonding state T2 - Kolloquium des DFG SPP1594 Ultrastrong Glasses CY - Jena, Germany DA - 2015-09-17 PY - 2015 AN - OPUS4-35203 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blaeß, Carsten T1 - New bioactive glasses with improved sintering behavior T2 - Crystallization 2015 CY - Nagaoka, Japan DA - 2015-10-11 PY - 2015 AN - OPUS4-35202 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan A1 - Eberstein, Markus A1 - Müller, Ralf A1 - Schiller, Wolfgang Arno A1 - Schweiger, M. T1 - Lastabhängige Schwindung von Glaspulvern N2 - Glasig-kristalline Sinterwerkstoffe werden für vielfältige Anwendungen eingesetzt. Bei einem hohen Glasanteil ist ein Einfluss geringer Lasten auf das Schwindungsverhalten möglich, so dass es zu Fehlinterpretationen des Schwindungsverhaltens bei gebräuchlichen Horizontaldilatometer kommen kann. T2 - 75. Glasetechnische Tagung CY - Wernigerode, Germany DA - 21.05.2001 KW - Glasig-kristalline Sinterwerkstoffe KW - Schwindungsverhalten KW - Horizontaldilatometer PY - 2001 AN - OPUS4-35786 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gaber, Martin A1 - Müller, Ralf A1 - Höland, W. T1 - Degassing phenomena during sintering and crystallization of glass powders N2 - Degassing may cause trouble in manufacture of sintered glass-ceramics via the Formation of bubbles (deteriorate mechanical strength or surface Quality) T2 - 6th Int. Otto Schott Colloquium CY - Jena, Germany DA - 06.09.1998 KW - Bulk diffusion KW - Sintering KW - Crystallization KW - Melting PY - 1998 AN - OPUS4-35785 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marzok, Ulrich A1 - Müller, Ralf A1 - Schadrack, Reinhard A1 - Krauhausen, M. A1 - Reetz, R. T1 - Hochtemperatur-Laserprofilometrie für keramische Proben N2 - Das Hochtemperatur-Laserprofilometer der BAM4 ermöglicht eine 3D-Formerkennung an keramischen Folien oder anderen flachen Objekten während thermischer Behandlungen wie zum Beispiel bei laufenden Entbinderungs- oder Sinterprozessen. Mit dem Lasertriangulationssensor werden das Höhenprofil, die lateralen und axialen Schwindungen und andere charakteristische Maße der Probe wie die Folienbreite und -dicke, Abstände zwischen spezifischen Merkmalen oder Krümmungen bestimmt. Somit können insbesondere auch Deformationen und Verwerfungen der Objekte sowie Schwindungsinhomogenitäten an strukturierten Objekten erkannt und mit dem Herstellungsprozess verknüpft werden. T2 - DKG Jahrestagung 2012 CY - Nuremberg, Germany DA - 05.03.2012 KW - 3D-Formerkennung KW - Lasertriangulationssensor KW - Deformationen KW - Schwindungsinhomogenitäten PY - 2012 AN - OPUS4-35787 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marzok, Ulrich T1 - Bestimmung der H2-Permeabilität von Gläsern mit der VHE-Methode N2 - Die Entwicklung von Wasserstoffbarrieren aus Glas erfordert die genaue Messung geringster H2-Permeabililtäten. Bisherige Untersuchungen haben gezeigt, dass die VHE-Pulvermethode diesbezüglich eine besonders hohe Empfindlichkeit bietet. Hierbei wird die isotherme Gasabgabe aus sphärischen Partikeln im Rahmen klassischer Diffusionsmodelle gefittet und daraus der Diffusionskoeffizient bestimmt. Für die Untersuchung von Gläsern mit möglichst geringer H2-Permeabilität ist jedoch eine Validierung der Genauigkeit der Methode notwendig. Vor diesem Hintergrund erfolgte die numerische Modellierung der H2-Abgabe mit Hilfe des Programms COMSOL Multiphysics®. Im Poster wird der Einfluss der Korngrößenverteilung der Glaspulverpartikel, der Partikelform sowie der Effekt einer nichthomogenen H2-Startverteilung auf die mittels Pulvermethode ermittelten Diffusionskoeffizienten diskutiert. T2 - 90. Glastechnische Tagung (Deutsche Glastechnische Gesellschaft e.V.) CY - Goslar, Germany DA - 06.06.2016 KW - Wasserstoffpermeation KW - Glas KW - Vakuumheißextraktion KW - Pulvermethode KW - Simulation PY - 2016 AN - OPUS4-36528 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Welter, T. T1 - Glasstrukturen mit geringer Helium- und Wasserstoffpermeation N2 - Wasserstoffbarrieren aus Glas erfahren zunehmend Bedeutung als Werkstoff in der Energietechnik. Trotz wachsender Anwendungen liegen überwiegend empirisch gewonnene Beziehungen zwischen Glaszusammensetzung und Wasserstoffpermeation vor, die im wesentlichen aus dem Verhalten von Kieselglas abgeleitet werden. In dieser Studie werden daher topologische Parameter der Glasstruktur identifiziert und mit thermodynamischen Parametern korreliert. Auf der Seite der Glastopologie steht das freie Volumen und der Vernetzungsgrad des Netzwerkes während auf der thermodynamischen Seite die Konfigurationsentropie bzw. die Konfigurationswärmekapazität Aufschluss über die Verteilung des freien Volumens geben kann. Dabei wird angenommen, dass für Temperaturen weit unterhalb der Glasübergangstemperatur die chemische Löslichkeit von H2 zu vernachlässigen ist. Um die eingeschränkte Datenlage für die Wasserstoffpermeation kompositionell zu erweitern, wurden zusätzlich Heliumpermeationsmessungen ausgewertet. Die Ergebnisse zeigen, dass für Silicatgläser ein charkteristisches Verhältnis von freiem Volumen zu Netzwerkaufspaltung herrschen muss, um permeationsstabile Gläser zu erhalten. T2 - 90. Glastechnische Tagung CY - Goslar, Germany DA - 06.06.2016 KW - Glasstruktur KW - Helium- und Wasserstoffpermeation KW - Alkalialumosilicatsysteme KW - Thermodynamik KW - Energietechnik PY - 2016 AN - OPUS4-36583 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marzok, Ulrich T1 - High-temperature laser profilometry N2 - Advanced methods for 3D green density characterization like computed tomography and 3D FE sinter modeling can be utilized for increasing the reliability of sintered components. The experimental in situ observation of sin-tering, however, is currently restricted to silhouette methods, i.e. heating microscopy. For complex shaped sam-ples, in situ shape screening during shrinkage would allow better validation of 3D sinter simulation models. Further, by revealing temporary sinter warpage, 3D high-temperature shape screening would allow to locate potential defects of complex sintered components. Against this background, BAM developed a testing device for in situ 3D high-temperature shape screening for ceramic and glass-ceramic tapes up to 1000°C [1-3]. Current work is focused on dropping this restriction in sample shape and temperature. The poster illustrates the current state of this work and possible applications of the method e.g. in detecting sinter warpage of metallized glass-ceramic LTCC tapes. T2 - 90. Glastechnische Tagung (Deutsche Glastechnische Gesellschaft e.V.) CY - Goslar, Germany DA - 06.06.2016 KW - Laser profilometry KW - 3D High-temperature shape screening KW - Sintering PY - 2016 AN - OPUS4-36510 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marzok, Ulrich T1 - High-temperature laser profilometry N2 - Advanced methods for 3D green density characterization like computed tomography and 3D FE sinter modeling can be utilized for increasing the reliability of sintered components. The experimental in situ observation of sintering, however, is currently restricted to silhouette methods, i.e. heating microscopy. For complex shaped samples, in situ shape screening during shrinkage would allow much better validation of 3D sinter simulation models. Further, by revealing temporary sinter warpage, 3D high-temperature shape screening would allow to locate potential defects of complex sintered components. Against this background, BAM developed a testing device for in situ 3D high-temperature shape screening for ceramic and glass-ceramic tapes up to 1000°C. Current work is focused on dropping this restriction in sample shape and temperature. The poster illustrates the current state of this work and possible applications of the method e.g. in detecting sinter warpage of metallized glass-ceramic LTCC tapes. T2 - ICC6, 6th International Congress on Ceramics CY - Dresden, Germany DA - 21.08.2016 KW - Laser profilometry KW - 3D High-temperature shape screening KW - Sintering PY - 2016 AN - OPUS4-37708 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Ralf T1 - Hydrogen permeability of glass measured by VHE-MS powder methods N2 - Glasses are can serve as exceptionally tight hydrogen barriers e.g. used for hydrogen storage in micro glass containers or cover glasses in micro electronic systems. Respective glass development, however, requires precise measurements of minimal hydrogen permeability, PH2. Recent studies showed that PH2 can be measured down to 2 10-21 mol s-1 Pa-1m-1 by means of Vacuum Hot Extraction (VHE) powder methods [1]. In this respect the isothermal gas release from glass powder particles is fitted in terms of classical diffusion models assuming spherical particles of uniform size thus obtaining the hydrogen diffusion coefficient, DH2. PH2 is then given by D H2 × S H2, where hydrogen solubility, SH2, is obtained from VHE studies of glass powders exposed to hydrogen atmosphere for different exposure time and hydrogen pressure. Measurements of minimal values of hydrogen permeability, however, require a careful evaluation and error discussion of this method. Against that background, we modeled hydrogen degassing during heating and subsequent isothermal annealing of glass powder particles of different shape and particle size distribution by means of COMSOL Multiphysics® [2] and verified related effects on DH2 obtained by the VHE powder method. T2 - SGT Centenary Conference, & ESG 2016 CY - Sheffield, UK DA - 4.9.2016 KW - Glass KW - Hydrogen KW - Permeability KW - Storage PY - 2016 AN - OPUS4-38307 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blaeß, Carsten T1 - Sintering and crystallization of new bioactive glasses N2 - Bioglass® 45S5 is mainly used clinically as powders, granules or pastes instead of sintered compacts. This is due to the inherent problem of crystallization during the sintering, which results in poor mechanical properties and reduced bioactivity. Recently, new bioactive glasses with improved crystallization stability have been developed as promising candidates for manufacturing of sintered powder compacts for bone regeneration, which combine improved sintering behavior with bioactivity. Compared with the well-known Bioglass® 45S5 (SiO2-P2O5-CaO-Na2O) the calcium/alkali oxide ratio was increased, sodium oxide was partially replaced by potassium oxide and up to 3 mol% calcium fluoride were added, in order to stabilize the glass against crystallization. The aim of this study was to investigate the sintering and crystallization behavior of these new bioactive glasses. Sintering and crystallization were characterized by heating microscopy, XRD, FTIR, SEM, and DTA. The results show that a sintered density of 88-99 % is achieved in contrast to only 57-67% for Bioglass® 45S5. In addition, FTIR and XRD analyses show that Bioglass® 45S5 crystallized during sintering while for the new glasses no crystalline phases are detected. The thermal properties of all glasses were studied by DTA measurements, and the influence of grain size was characterized. These studies showed that full densification can be attained for particle size < 32 µm, whereas coarser particles progressively increase residual porosity. Observed foaming phenomena, are strongly retarded by crystallization of beta-HAp. T2 - ICG 2016 CY - Shanghai, China DA - 07.04.2016 KW - Bioactive KW - Glass KW - Crystallization KW - Sintering PY - 2015 AN - OPUS4-38304 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blaeß, Carsten T1 - New bioactive glasses with improved sintering behavior N2 - Nowadays, the use of bioactive glasses is established for bone regeneration; however glasses are used mostly as powders, granules or in a paste. Sintered scaffolds are not used clinically, because of the in inherent problem of crystallization during the sintering process, resulting in poor mechanical properties and reduced bioactivity. The aim of this study was therefore to design new bioactive glasses, which combine improved processing and sintering with bioactivity. Compared with the well-known Bioglass® 45S5 (SiO2-P2O5-CaO-Na2O) the calcium/alkalioxide ratio was increased, sodiumoxide was partially replaced by potassiumoxide and up to 8 mol% calciumflorid were added, in order to stabilize the glass against crystallization. The sintering behavior of the new glasses was characterized by heating microscopy and compared to Bioglass® 45S5. The results showed that the new glasses achieved a sintered density of 88-99 % in contrast to only 57-67% for Bioglass® 45S5. In addition FTIR and XRD analyses showed that Bioglass® 45S5 crystallized during sintering while for the new glasses no crystalline phases were detected. The thermal properties of all glasses were studied by DTA and DSC measures, and the influence of grain size and heating rate were characterized. These studies showed a shift of start and end temperature of sintering process as well as the final density. The structure of sintered specimens during and after sintering was examined using light and electron microscopy (REM). T2 - Crystallization 2015 CY - Nagaoka, Japan DA - 11.10.2015 KW - Bioactive KW - Glass KW - Crystallization KW - Sintering PY - 2015 AN - OPUS4-38308 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blaeß, Carsten T1 - Sintering and crystallization of new bioactive glasses N2 - Bioglass® 45S5 is mainly used clinically as powders, granules or pastes instead of sintered compacts. This is due to the inherent problem of crystallization during the sintering, which results in poor mechanical properties and reduced bioactivity. Recently, new bioactive glasses with improved crystallization stability have been developed as promising candidates for manufacturing of sintered powder compacts for bone regeneration, which combine improved sintering behavior with bioactivity. Compared with the well-known Bioglass® 45S5 (SiO2-P2O5-CaO-Na2O) the calcium/alkali oxide ratio was increased, sodium oxide was partially replaced by potassium oxide and up to 3 mol% calcium fluoride were added, in order to stabilize the glass against crystallization. The aim of this study was to investigate the sintering and crystallization behavior of these new bioactive glasses. Sintering and crystallization were characterized by heating microscopy, XRD, FTIR, SEM, and DTA. The results show that a sintered density of 88-99 % is achieved in contrast to only 57-67% for Bioglass® 45S5. In addition, FTIR and XRD analyses show that Bioglass® 45S5 crystallized during sintering while for the new glasses no crystalline phases are detected. The thermal properties of all glasses were studied by DTA measurements, and the influence of grain size was characterized. These studies showed that full densification can be attained for particle size < 32 µm, whereas coarser particles progressively increase residual porosity. Observed foaming phenomena, are strongly retarded by crystallization of beta-HAp. T2 - SGT Centenary Conference CY - Sheffield, UK DA - 04.09.2016 KW - Bioactive KW - Glass KW - Crystallization KW - Sintering PY - 2016 AN - OPUS4-38317 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Blaeß, Carsten T1 - Sintering and crystallization of new bioactive glasses N2 - Bioglass® 45S5 is mainly used clinically as powders, granules or pastes instead of sintered compacts. This is due to the inherent problem of crystallization during sintering. Recently, new bioactive glasses with improved crys-tallization stability have been developed as promising candidates for manufacturing of sintered powder compacts for bone regeneration, which combine improved sintering behavior with bioactivity. Compared with the well-known Bioglass® 45S5 (SiO2-P2O5-CaO-Na2O) the calcium/alkali oxide ratio was increased, sodium oxide was partially replaced by potassium oxide and up to 3 mol% calcium fluoride were added, in order to stabilize the glass against crystallization. Sintering and crystallization were characterized by heating microscopy, XRD, FTIR, SEM, and DTA. The results show that a sintered density of 88-99 % is achieved in contrast to only 57-67% for Bioglass® 45S5. Whereas Bioglass® 45S5 powder compacts crystallize during sintering, for the new glasses no crystalline phases were detected. Additionally the influence of grain size was characterized. These studies showed that full densification can be attained for particle size < 32 µm, whereas coarser particles pro-gressively increase residual porosity. Observed foaming phenomena, are strongly retarded by crystallization. T2 - 90. Glastechnische Tagung (Deutsche Glastechnische Gesellschaft e.V.) CY - Goslar, Germany DA - 06.06.2016 KW - Bioactive KW - Glass KW - Crystallization KW - Sintering PY - 2016 AN - OPUS4-38311 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wang, Kun T1 - Water absorption effects on distributed temperature sensing using polyimide-coated optical fiber N2 - Polyimide-coated fibers are becoming more popular for distributed temperature sensing (DTS) because this coating can withstand much higher temperatures than the standard acrylate coating. As a hygroscopic material, polyimide can absorb water from the air, changing its properties, which may result in a modified temperature response of the sensing fiber. This study investigates the effect of water absorption on the performance of polyimide-coated optical fibers with different sizes and properties. The thermal response of these fibers was determined experimentally from 20°C to 90°C at a broad relative humidity level ranging from 10% to 90%. The results show that all the fibers experienced a decrease in temperature sensitivity as humidity increased, with the most noticeable non-linear spectral shift observed at higher humidity levels. These findings highlight the importance of optimizing fiber design and coating properties to balance stability and sensitivity, ensuring the reliable performance of DTS systems under extreme environmental conditions. T2 - 29th International Conference on Optical Fiber Sensors CY - Porto, Portugal DA - 26.05.2025 KW - Distributed temperature sensing KW - Optical fiber sensors KW - Humidity sensing KW - Temperature sensing KW - Water absorption KW - Polyimide-coated fiber PY - 2025 AN - OPUS4-63639 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schröpfer, Dirk T1 - Minimization of tool wear in milling of iron aluminides using ultrasonic-assisted process N2 - Presentation of key results from the ZIM cooperation project "TEWUFEAL" on tool development for ultrasonic-assisted milling of iron aluminide alloys cast in gravity die casting. T2 - 24th International Conference on Wear of Materials CY - Banff, Canada DA - 16.04.2023 KW - Iron aluminides KW - Ultrasonic-assisted milling KW - Surface integrity KW - Tool wear PY - 2023 AN - OPUS4-59259 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Martin T1 - Friction coefficients for wood-wood and wood-steel interfaces in impact limiters for transport casks N2 - Wood is widely used in impact limiters of transport casks for radioactive material. Encapsulated by an outer and inner steel structure, spruce wood is often applied in layers of alternating direction. The friction at the interfaces between these layers is of crucial importance for the impact and energy absorption e.g., at an accidental impact of a cask against a hard target. In order to get detailed information for corresponding numerical calculations, in this study the friction coefficient for the combinations wood-wood and wood-steel was measured in the temperature range between -40°C and 90°C according to the relevant stress conditions for such casks. Results show decreasing friction with increasing temperature, ranging from 0.43 at -40°C to 0.22 for 90°C for wood-steel combinations and from 0.3 at -40°C to 0.24 at 90°C to for a wood-wood combination. T2 - 20th International Symposium on the Packaging and Transportation of Radioactive Materials (PATRAM 22) CY - Juan-les-Pins, France DA - 11.06.2023 KW - Wood KW - Friction KW - Transport cask PY - 2023 AN - OPUS4-57702 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steffen, Milan T1 - Integration of Cu-coated Single-mode Optical Fiber into Carbon/PEEK Composite for distributed Structural Health Monitoring based on Rayleigh Backscatter T2 - European Workshop on Optical Fibre Sensors, 5th EWOFS 2013 CY - Kraków, Poland DA - 2013-05-19 PY - 2013 AN - OPUS4-28611 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heller, I. T1 - Wasserdiffusion in Floatglas T2 - 79. Glastechnische Tagung CY - Würzburg, Germany DA - 2005-05-23 PY - 2005 AN - OPUS4-7401 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zietka, S. T1 - Viskosität von hydratisierten Kieselgläsern im Bereich der Transformationstemperatur T2 - 80. Glastechnische Tagung CY - Dresden, Germany DA - 2006-06-12 PY - 2006 AN - OPUS4-14256 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Partial solution of dispersed alpha-Al2O3-particles in alumoborosilicate glass T2 - 81. GlastechnischeTagung und 4. DGG-Symposium "Novel Optical Technologies" CY - Aachen, Germany DA - 2007-06-04 PY - 2007 AN - OPUS4-15494 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thiel, A. T1 - Viskosität von Glasmatrix-Kompositen mit partiell löslicher kristalliner Dispersphase T2 - 81. Glastechnische Tagung und 4. DGG-Symposium „Novel Optical Technologies“ CY - Aachen, Germany DA - 2007-06-04 PY - 2007 AN - OPUS4-16200 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thiel, A. T1 - Sintering of glass ceramic composites for LTCC applications T2 - ICG 2007 XXIst Intern. Congress on Glass CY - Strasbourg, France DA - 2007-07-01 PY - 2007 AN - OPUS4-16202 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schukar, Marcus T1 - Faser-Bragg-Gitter-Sensoren überwachen Strahlung am Elektronenspeicherring BESSY II. N2 - Untersuchung der Eignung von FBG-Strahlungssensoren zur verteilten Überwachung auftretender ionisierender Strahlung an Elektronenspeicherringen. Test des Messverfahrens am Undulator U 49/1 des Elektronenspeicherrings BESSY II T2 - 8. Dresdner Sensorsymposium CY - Dresden, Germany DA - 10.02.2007 PY - 2007 AN - OPUS4-16291 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, Jens T1 - Polymeroptische Fasersensoren in der Medizintechnik T2 - 8. Dresdner Sensor-Symposium (8. DSS) CY - Dresden, Germany DA - 2007-12-10 PY - 2007 AN - OPUS4-16440 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eberstein, Markus T1 - Viskosität von Al203-angereicherten Calcium-alumoborosilicatgläsern T2 - 82. Glastechn. Tagung CY - Hamelin, Germany DA - 2008-05-19 PY - 2008 AN - OPUS4-18107 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Sinterkinetik von Glasmatrix-Kompositen T2 - Symp. HLK 2008, Keramik in Wissenschaft und Praxis CY - Hamburg, Germany DA - 2008-02-26 PY - 2008 AN - OPUS4-18226 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marzok, Ulrich T1 - Hochtemperatur-Laserprofilometrie für keramische Folien T2 - DKG-Jahrestagung 2009 CY - Aachen, Germany DA - 2009-03-23 PY - 2009 AN - OPUS4-18964 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Dissolution of alumina in glass matrix composites T2 - Crystallization 2009, 9th Intern. Symp. on Crystallization in Glasses and Liquids CY - Curitiba, Brazil DA - 2009-09-10 PY - 2009 AN - OPUS4-20209 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Ralf T1 - Dissolution of alumina in GMC for LTCC T2 - 8th Pacific Rim Conf. on Ceramic and Glass Technology CY - Vancouver, Canada DA - 2010-05-31 PY - 2010 AN - OPUS4-21416 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rosemann, Maik T1 - Dissolution Behavior of Alumina in Low Temperature Co-fired Ceramics T2 - 10th ESG Conf. together with 84th Annual Meeting of the DGG CY - Magdeburg, Germany DA - 2010-05-30 PY - 2010 AN - OPUS4-21417 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, Jens T1 - Smart medical textiles with embedded optical fibre sensors for continuous monitoring of respiratory movements during MRI N2 - We report on three respiration sensors based on pure optical technologies developed during the FP6 EU project OFSETH. The developed smart medical textiles can sense elongation up to 3%, while maintaining the stretching properties of the textile substrates for a good comfort of the patient. The sensors, based on silica and polymer fibre, are developed for monitoring of patients during MRI examination. The OFSETH harness allows a continuous measurement of respiration movements while all vitals organs are free for medical staff actions. The sensors were tested in MRI environment and on healthy adults. T2 - 4th European Workshop on Optical Fibre Sensors (EWOFS) CY - Oporto, Portugal DA - 08.09.2010 PY - 2010 AN - OPUS4-22061 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Witt, Jens T1 - Investigation of sensing properties of long period gratings based on microstructured polymer optical fibres T2 - 4th European Workshop on Optical Fibre Sensors CY - Oporto, Portugal DA - 2010-10-08 PY - 2010 AN - OPUS4-22054 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eberstein, Markus T1 - Sintering of glass ceramic composites for microelectronics T2 - 8. Internationales Otto-Schot-Kolloquium CY - Jena, Germany DA - 2006-07-23 PY - 2006 AN - OPUS4-12415 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Mechanical loss spectroscopy on water enriched glasses T2 - 8. Internationales Otto-Schott-Kolloquium CY - Jena, Germany DA - 2006-07-23 PY - 2006 AN - OPUS4-12487 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Rate controlled debindering of glass ceramic composites T2 - 9th ESG Conf. with the Annual Meeting of the ICG Glass - The challenge for the 21st century CY - Trencín, Slovakia DA - 2008-06-22 PY - 2008 AN - OPUS4-16687 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thies, Martina T1 - A new test method for measuring the long-term shear behaviour of geosynthetic clay liners T2 - Polydays 2002 CY - Berlin, Germany DA - 2002-09-30 PY - 2002 AN - OPUS4-3143 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Kristallwachstumgeschwindigkeit und -mechanismen von m-Cordiert zwischen 800 und 1350°C T2 - 77. Glastechnische Tagung CY - Leipzig, Germany DA - 2003-05-26 PY - 2003 AN - OPUS4-4744 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Deubener, Joachim T1 - Water and the glass transition temperature of silicate melts T2 - 7. International Otto Schott Colloquium CY - Jena, Germany DA - 2002-07-07 PY - 2002 AN - OPUS4-4711 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hahn, Oliver T1 - The surrounding atmosphere of exhibits - damage due to volatile organic compounds T2 - 5th International Conference on Indoor Air Quality in Museums and Historic Properties CY - Norwich, England DA - 2003-04-26 PY - 2003 AN - OPUS4-5433 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Adam, Karin T1 - Schäden an Gläsern des 18./19. Jahrhundertss durch Craquelê T2 - Gemeinsame Jahrestaging für Archäometrie der GDCh und DMG CY - Berlin, Germany DA - 2003-03-12 PY - 2003 AN - OPUS4-5427 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wondraczek, L. T1 - Nano-crystalline germanate glass-ceramics T2 - 78. Glastechnische Tagung CY - Nuremberg, Germany DA - 2004-06-07 PY - 2004 AN - OPUS4-5628 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Crystal Growth Mechanism in Cordierite and Diopside Glasses in wide Temperature Ranges T2 - XX. International Congress on Glass CY - Kyoto, Japan DA - 2004-09-26 PY - 2004 AN - OPUS4-5622 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marzok, Ulrich T1 - Formerkennung an sinternden Glasmatrixkompositen mit Lasertriangulation T2 - 82. Glastechn. Tagung CY - Hamelin, Germany DA - 2008-05-19 PY - 2008 AN - OPUS4-17649 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marzok, Ulrich T1 - Formerkennung an sinternden Glasmatrixkompositen mit Lasertriangulation T2 - DKG-Jahrestagung 2008 CY - Höhr-Grenzhausen, Germany DA - 2008-05-26 PY - 2008 AN - OPUS4-17650 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Thoralf T1 - Detection and analysis of pitting initiation process by combining electrochemical and microscopic methods T2 - Eurocorr 2011 CY - Stockholm, Sweden DA - 2011-09-04 PY - 2011 AN - OPUS4-24466 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nagamine, K. T1 - Crystallization of Lithium Iron Phosphate Glasses for Lithium Ion Batteries T2 - Intern. Con. on Glass ICG 2010 CY - Bahia, Brazil DA - 2010-09-20 PY - 2010 AN - OPUS4-22294 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - de Oliveira, Rui T1 - Advanced composite materials with embedded POF sensors for structural health monitoring N2 - A long period grating (LPG) mechanically imprinted in a microstructured polymer optical fibre (mPOF) is embedded in a carbon fibre reinforced polymer (CFRP) unidirectional laminate. Processing steps were established in order to ensure that mPOF does not suffer significant degradation. The strain and temperature responses of the embedded mPOF-LPG were then investigated. T2 - The 19th International Conference on Plastic Optical Fibers CY - Yokohama, Japan DA - 19.10.2010 PY - 2010 AN - OPUS4-22416 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Thoralf T1 - Auswahl, Synthese und Charakterisierung von Beschichtungssystemen auf MgCa1,0-Legierungen für Anwendungen temporärer biomedizinischer Implantate T2 - GfKORR-Jahrestagung CY - Frankfurt am Main, Germany DA - 2010-11-09 PY - 2010 AN - OPUS4-22451 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Thoralf T1 - Erfassung und Analyse der Startvorgänge lokaler Korrosion mittels kombinierter elektrochemischer und mikroskopischer Methoden T2 - GfKORR-Jahrestagung 2010 CY - Frankfurt am Main, Germany DA - 2010-11-09 PY - 2010 AN - OPUS4-22452 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reinsch, Stefan T1 - Sintering and bloating phenomena of barium disilicate glass powders T2 - 88. Glastechnische Tagung DGG - ACerS GOMD 2014 CY - Aachen, Germany DA - 26.05.2014 PY - 2014 AN - OPUS4-30810 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sojref, Regine T1 - Fused Silica Containing Powders for Low Sintering (1650°C) Mullite-Zirconia Composites T2 - 23rd International Congress on Glass CY - Prague, Czech Republic DA - 01.07.2013 PY - 2013 AN - OPUS4-30851 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sojref, Regine T1 - Mullite Ceramics with Increased Flexural Strength Made by Small (< 5 Vol.-%) Additions of Nanozirconia T2 - ECERS 2013 CY - Limoges, France DA - 2013-06-23 PY - 2013 AN - OPUS4-30852 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Neumann, Patrick P. T1 - Setup of a large scale soil test field with CO2 injection for testing a novel distributed subsurface monitoring system for gas storage areas T2 - 31st Danubia Adria Symposium on Advances in Experimental Mechanics CY - Kempten, Germany DA - 2014-09-24 PY - 2014 AN - OPUS4-31564 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heimann, Jan T1 - Innovative Real-Time Monitoring of H2 Pressure Vessels for Enhanced Safety and Reliability N2 - The significantly increased number of pressure vessels for storage and transport of H2 makes periodic manual inspections virtually impossible. Structural health monitoring enables proactive maintenance, extends the vessel’s lifespan, and ensures compliance with regulations, all while minimizing operational risks and downtime. T2 - QI-Digital Forum 2024 CY - Berlin, Germany DA - 09.10.2024 KW - Structural Health Monitoring KW - Pressure Vessel KW - Hydrogen KW - Reliability KW - Quality Infrastructure KW - Demonstrator PY - 2024 AN - OPUS4-61485 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hofmann, Detlef A1 - Basedau, Frank A1 - Pötschke, Samuel A1 - Breithaupt, Mathias T1 - Die durchleuchtete Brücke N2 - Das Poster gibt einen Überblick zum Themenfeldprojekt BLEIB und präsentiert ausgewählte Ergebnisse faseroptischer Messungen bei verschiedenen Belastungsszenarien an der Versuchsbrücke. T2 - Tag der offenen Tür auf dem Testgelände der BAM (BAM TTS) CY - Horstwalde, Germany DA - 29.09.2018 KW - Bauwerksüberwachung KW - Faseroptische Sensorik KW - Dehnungsmessung KW - Temperaturmessung KW - Verteilte Messverfahren PY - 2018 AN - OPUS4-46334 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bonnerot, Olivier T1 - XRF Ink analysis of selected fragments from the Herculaneum collection N2 - Hundreds of papyrus rolls, carbonized during the 79CE eruption of Mount Vesuvius, were discovered in 1754 at Herculaneum. Sophisticated mechanical methods for unrolling the best-preserved scrolls have been applied, with varying success. However, such processes have been abandoned, to prevent risk from irremediable damage or loss and to preserve the integrity of the extremely fragile rolls. Following the development of X-ray based non-invasive techniques, attempts to virtually unroll the scrolls were made. The most common ink in Antiquity was carbon-based, and the main element of carbonized papyrus is carbon, making these investigations difficult. However, some attempts with synchrotron X-ray phase-contrast tomography (XPCT) were successful. Recently, the identification of antique inks containing metals raised hope that if some of the inks contain metal the rolls can be virtually unrolled using conventional CT- technique. We investigated the inks of a selection of partially unrolled fragments stored at the Biblioteca Nazionale di Napoli with X-ray fluorescence in order to select the best candidates for tomography. Despite the many difficulties (analysis of several layers sticking together, letters barely visible, difficulty to separate contribution from the ink and from the papyrus, inhomogeneity of the support, fragility of the fragments…), encouraging results were found, with a number of inks from Greek fragments found to contain additions to the soot (Fe, Pb, Cu P). T2 - International Symposium on Archaeometry CY - Online meeting DA - 16.05.2022 KW - XRF KW - Ink KW - Herculaneum KW - Papyrus PY - 2022 AN - OPUS4-54892 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Giese, Marcel T1 - Mashining of wear resistant materials by means of ultrasonic assisted milling N2 - The long-term global goals of achieving almost net zero carbon emissions in the next decades are closely linked to the development of highly efficient components in plant, process and energy engineering, and their sustainable and resource-saving production. Plant components must increasingly withstand tribological loads in addition to high thermal, mechanical, and corrosive stresses. Such combined stresses demand high-performance alloys economically tailored to the application for wear protection and components produced as semi-finished products, via additive manufacturing (AM) or claddings via deposition welding. For instance, the protection of special components made of less cost-intensive materials, e.g., steel in process engineering for screw machines or exhaust gas separation, is feasible applying cost-intensive Ni- or Co-based hard-phase claddings. Today an increasing number of above-mentioned applications demand precise finishing machining of components to ensure defined compact surfaces with a high integrity and complex contours. Contour milling is standard process for finishing machining of metals. Especially, the desired properties of wear resistant materials (e.g., high strength, hard precipitations) imply significant challenges for milling processes and tools, leading frequently to uneconomic milling conditions due to intolerable high tool wear and surface defects. Inhomogeneous, anisotropic weld structures due to cladding or AM of wear resistance alloys lead to further deteriorations of milling processes due to unstable milling conditions and process forces during chip removal. To tackle these challenges, already several approaches exist, (1) to enhance machinability of the claddings by alloy modifications to specifically influence solidification and hard phases morphology (precipitation shape, size, distribution) and (2) to achieve significant improvements of the machining situation (e.g., increase of tool life and surfaces integrity) by means of modern hybrid machining processes such as ultrasonic-assisted milling. This contribution shows a comprehensive overview of recent results with these promising approaches for additively welded Ni- CoCr-alloys. T2 - 24th International Conference on Wear of Materials CY - Banff, Alberta, Canada DA - 16.04.2023 KW - Ultrasonic assisted milling KW - Surface integrity PY - 2023 AN - OPUS4-58944 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Erxleben, Kjell T1 - Assessment of in-service welding conditions for pressurized hydrogen pipelines via component test N2 - Hydrogen is the energy carrier of tomorrow for a fossil-free future. This requires a reliable transport infrastructure capable of transporting large quantities of hydrogen. In addition to the construction of new pipelines, the conversion of existing natural gas (NG) networks is an essential part of global hydrogen strategies. The transport of hydrogen is fundamentally different from that of NG, as hydrogen can be absorbed into the pipeline material. Given the known effects of hydrogen embrittlement, the compatibility of the materials for the proposed pipelines (typically low alloy steels in a wide range of strengths and thicknesses) must be investigated. However, pipelines require frequent maintenance, repair, or the need to install additional outlets. In some cases, it is necessary to perform welding on or to the pipelines while they are in-service, i.e. with active gas flow under high pressure. This in-service welding poses challenges for hydrogen operations in terms of additional hydrogen absorption during welding and material compatibility. The challenge can be roughly divided into the possible austenitization of the inner pipe material exposed to hydrogen, which can lead to sufficient hydrogen absorption, and the welding itself, which causes an increased temperature range. Both lead to a significant increase in hydrogen solubility of the respective materials compared to room temperature. In this context, knowledge about welding on hydrogen pipelines is scarce due to the lack of operational experience. Fundamental experimental investigations are required to investigate the transferability from natural gas to hydrogen pipeline networks. For this reason, the present study presents a specially designed demonstrator concept for the realistic assessment of the welding process conditions. The demonstrator was designed ex-post sample extraction for quantification of the absorbed hydrogen concentration. For safety reasons, the required volume of pressurized hydrogen was limited by inserting a solid cylinder. Welding experiments on the DN50 and DN200 pressurized demonstrators showed an increased hydrogen uptake in the welded area of several ppm. T2 - Materials Week/Steel Innovation CY - Frankfurt am Main, Germany DA - 02.04.2025 KW - In-service KW - Hydrogen KW - Pipeline KW - Repair welding KW - Component test PY - 2025 AN - OPUS4-62941 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lay, Vera T1 - Sichere Verschlussbauwerke mittels innovativer Materialien, multisensorischem Monitoring und Ultraschall-Prüfung zur Qualitätssicherung N2 - Verschlussbauwerke sind für die untertägige Endlagerung im Salzgestein als eine wichtige technische Barriere vorgesehen. Diese Bauwerke müssen hohen Anforderungen an Sicherheit und Integrität genügen, weshalb im Projekt SealWasteSafe Werkstofftechnik, Prüfverfahren und Überwachungsmethoden für sichere Verschlussbauwerke verbessert werden. Dabei zeigen die untersuchten alkaliaktivierten Materialien (AAM) langsamere Reaktionskinetik bei der Erhärtung im Vergleich zu Salzbeton, was potenziell geringere Rissbildung erwarten lässt. Die Erhärtung wird an Probekörpern (100-300 l) multisensorisch über einen Zeitraum von mindestens 28 Tagen überwacht. Die Parameter Temperatur und Feuchtigkeit werden einerseits kabelgebunden, andererseits mittels drahtloser Radio Frequency Identification (RFID)-Technik aufgezeichnet. Zusätzlich kommen Schallemissionsmessungen sowie Dehnungsmessungen mittels verteilter faseroptischer Sensorik (FOS) zum Einsatz. Die Überwachung zeigt verschiedene Charakteristika beim Erhärten der Materialien mit geringerer Temperaturentwicklung des AAM. Zusätzlich werden Ultraschallmessungen genutzt, um Einbauteile und Störstellen wie Risse und Delaminationen im Rahmen der Qualitätssicherung am Probekörper und am Verschlussbauwerk zu detektieren. Dafür werden sowohl ein Ultraschallmesssystem mit großer Apertur (LAUS) als auch eine Ultraschall-Bohrlochsonde eingesetzt. Durch Erhöhung des Schalldrucks und Schallfeldbündelung im Beton wird die Aussagekraft der von der Bohrlochsonde aufgezeichneten Messsignale verbessert, was in Modellierungen und ersten Labortests gezeigt werden kann. Die Auswertung der Ultraschallmessungen zeigt das große Potenzial der Methode mit Eindringtiefen bis zu 9 m, wobei anspruchsvolle Abbildungsverfahren zu einer verbesserten Abbildung der internen Strukturen führen. Insgesamt verbessern die im Projekt SealWasteSafe entwickelten Materialien und Methoden die Möglichkeiten für sichere Verschlussbauwerke nuklearer Endlager. Obwohl die Konzepte speziell für Bauwerke im Salzgestein entwickelt werden, sind sie partiell gut auf andere Wirtsgesteine übertragbar. T2 - 3. Tage der Standortauswahl CY - Aachen, Germany DA - 08.06.2022 KW - SealWasteSafe KW - Salzbeton KW - Verschlussbauwerke KW - Monitoring KW - Ultraschall KW - Inspektion PY - 2022 AN - OPUS4-55093 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lay, Vera T1 - Zerstörungsfreie Prüfmethoden für Verschlussbauwerke nuklearer Endlager im Projekt SealWasteSafe N2 - Für die sichere Einlagerung von radioaktiven oder toxischen Abfällen kommen im Salzgestein technische Barrieren in Form von untertägigen Verschlussbauwerken zum Einsatz. Aufgrund der hohen Anforderungen an Sicherheit und Integrität dieser Verschlussbauwerke werden umfangreiche zerstörungsfreie Prüfmethoden zur Überwachung und Qualitätssicherung verwendet. Im BAM-Projekt SealWasteSafe werden Werkstofftechnik, Prüfverfahren und Überwachungsmethoden für sichere Verschlussbauwerke in Endlagern verbessert. Dabei wird der bisherige Salzbeton mit dem innovativen alkaliaktivierten Material (AAM) mit langsamerer Reaktionskinetik bei der Erhärtung und somit potenziell geringerer Rissbildung verglichen. Im Labormaßstab werden Probekörper mit Volumina von 100-300 l multisensorisch ausgestattet und somit die Zuverlässigkeit und Widerstandsfähigkeit der Sensoren gegenüber der hochalkalischen Umgebung nachgewiesen. Durch das Monitoring wird der Abbindevorgang des Betons überwacht und die Materialien über einen Zeitraum von mehreren Wochen charakterisiert. Dabei werden die Parameter Temperatur und Feuchtigkeit einerseits verkabelt als auch mittels drahtloser Radio Frequency Identification (RFID)-Technik aufgezeichnet. Zusätzlich kommen Schallemissionsmessungen sowie Dehnungsmessung mittels verteilter faseroptischer Sensorik (FOS) zum Einsatz. Das multisensorische Überwachungssystem wird durch aktive Ultraschallmessungen ergänzt, die durch die Detektion von Rissen, Delaminationen oder anderen Störstellen eine Qualitätssicherung der Verschlussbauwerke ermöglichen. Dafür werden sowohl ein Ultraschallsystem mit großer Apertur (LAUS) als auch eine Ultraschall-Bohrlochsonde eingesetzt. Durch Erhöhung des Schalldrucks und Bündelung der Schallsignale im Beton wird die Aussagekraft der von der Bohrlochsonde aufgezeichneten Messsignale verbessert, was in Modellierungen und ersten Labortests gezeigt werden kann. Die Auswertung der Ultraschallmessungen erfolgt mit auf Diffraktionssummation beruhenden Migrationsverfahren wie Kirchhoff-Tiefenmigration und Synthetic Aperture Focusing Technique (SAFT), die Abbildungen vom Inneren der Probekörper erzeugen. Insgesamt verbessert das Projekt SealWasteSafe mithilfe innovativer Multisensorik und Ultraschallmethodik die Überwachungs- und Qualitätssicherungskonzepte für sichere Verschlussbauwerke nuklearer Endlager. T2 - 82. Jahrestagung der Deutschen Geophysikalischen Gesellschaft CY - Online meeting DA - 07.03.2022 KW - SealWasteSafe KW - Ultraschall KW - Verschlussbauwerke KW - Abbildungsverfahren PY - 2022 AN - OPUS4-54533 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lay, Vera T1 - Advanced analysis of ultrasonic investigations at sealing structures N2 - Engineering barrier systems are a crucial part of the safe underground disposal of radioactive waste, particularly in salt as a host rock. Sealing structures made of tailored concrete are under test at various sites in Germany. To characterise the material properties of the concrete and potentially also the bonding to the host rock as part of the necessary subsurface structures, we apply non-destructive testing making use of advanced geophysical imaging methods. Ultrasonic investigations have been carried out at underground concrete structures in the Teutschenthal mine in Germany. Here, we show results from two distinct constructions produced in a shotcrete procedure. Our goal is to analyse the performance of ultrasonics to be used as quality assurance for sealing structures made from shotcrete. First, a ~10 m long shotcrete structure is investigated with the help of a unique Large Aperture Ultrasonic System (LAUS) allowing for depth penetration of > 9 m. We perform measurements at the front and from the side of the construction. Second, we obtain results from a 1 m thick shotcrete body containing several artificial defects (width up to 8 cm). Ultrasonic testing data were acquired using a commercial multi-static device. Additionally, a new device measuring with 3D mode instead of line mode is applied and preliminary results will be shown. Generally, the acquired ultrasonic data are analysed by the Synthetic Aperture Focusing Technique that is commonly applied in non-destructive testing. As a result, reflectors in the analysed shotcrete structures are imaged. Individual reflections from internal features and particularly the opposite wall are identified. An unexpected delamination wider than 30 cm is clearly imaged and later verified by boreholes. Thus, the method is – in general – suitable to serve as a quality measure. However, particularly the small and deep artificial defects can hardly be identified in the resulting images. Thus, we use advanced geophysical imaging methods to further enhance the quality of the obtained images. The recorded ultrasonic energy is focused to the physically reflective origin in the analysed volume. First results clearly show that we successfully improve the image quality regarding noise level and artifacts and hence facilitate the detection of objects. In total, we present a valuable experiment under realistic conditions for underground sealing structures made from shotcrete, where the locations of artificial reflectors are partly known. This experiment serves as a unique basis to analyse the performance of advanced analysis methods to obtain high-quality images of the structure’s interior. Hence, the developed ultrasonic testing and analysis schemes can serve as a part of quality assurance that will help to enable safe sealing structures for nuclear waste disposal. T2 - SafeND2023: Interdisciplinary research symposium on the safety of nuclear disposal practices CY - Berlin, Germany DA - 13.09.2023 KW - Ultrasound KW - Imaging KW - Engineered barrier systems KW - Shotcrete PY - 2023 DO - https://doi.org/10.5194/sand-2-67-2023 AN - OPUS4-58497 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maack, Stefan A1 - Niederleithinger, Ernst T1 - Low frequency ultrasonic dataset for comparison and validation of signal processing and imaging techniques in civil engineering N2 - The evaluation of technical components and materials in terms of condition and quality with the aid of non-destructive testing methods plays an outstanding role both in industrial serial production and in the individual assessment of components. The ultrasonic echo method is used for a wide variety of testing tasks, such as measuring the thickness of a component. At the Bundesanstalt für Materialforschung und -prüfung (BAM) in Berlin, test methods are developed and their performance is demonstrated. For this purpose, references such as materials, test procedures or data sets are generated, which are used to evaluate these developed test methods. An important component of these references are data sets that are created according to the BAM Data Policy and made available to the scientific community and users of test methods in practice on the basis of the FAIR principles (Findability, Accessibility, Interoperability, and Reuse). T2 - The International Symposium on Nondestructive Testing in Civil Engineering (NDT-CE) 2022 CY - Zurich, Switzerland DA - 16.08.2022 KW - Reference data KW - Non destructive testing and evaluation KW - Ultrasonic KW - Civil engineering PY - 2022 AN - OPUS4-58440 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jankevics Jones, H. T1 - Determination of core-shell particle mass and size distribution, density and distinguishing shell thickness by resonant mass measurements N2 - In micro or nano particles development it is important to understand and control the particle structure, as it affects among other things the potential further surface functionalisation/modification possible. This work shows the capability of resonant mass measurements (RMM) to measure the mass and density of micron sized particles. The technology utilizes a suspended MEMS microchannel resonator, through which individual particles transit across the resonator altering the resonant frequency, which is then detected using an optical-based method. Changes in frequency observed when a particle enters the microchannel resonator are proportional to the buoyant mass of the particle, and can be translated into mass, size or surface area. RMM therefore allows particle concentration to be determined as well as particle mass in a single measurement. Furthermore, a method for estimating the density distribution of particles from RMM measurements has been developed. This uses the convolution of the buoyant mass distribution of the particles obtained when suspended in different fluids. By combining the data from the density and mass determinations, small mass shifts arising from applying a coating to a particle can be estimated, and the resulting shell thicknesses calculated. These methods have been applied to silica coated and uncoated polystyrene latex particles. RMM shows that it can be used to measure, and distinguish between, silica shell thicknesses that are in the order of 10 to 55 nanometres on hybrid micron-sized particles. RMM can also determine the shell density. T2 - UK Colloids 2017 CY - Manchester, UK DA - 10.07.2017 KW - Core-shell particles KW - Resonant mass measurement PY - 2017 AN - OPUS4-42262 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Silke T1 - Determination of trace elements in high purity graphite by ETV-ICP-MS/OES using different gaseous modifiers T2 - ESAS Meeting CY - Weimar, Germany DA - 2008-09-28 PY - 2008 AN - OPUS4-19479 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Vom Indikatormolekül zum Sensorpartikel - unterwegs zu leistungsfähigen miniaturisierten Analyseplattformen T2 - IGAS Jahreskolloquium CY - Berlin, Germany DA - 2008-11-10 PY - 2008 AN - OPUS4-18545 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Novel Modular Sensors: Design of Efficient Probes for Various Analytes Utilizing the Phenoxazinone Chromophore T2 - Tag der Chemie CY - Potsdam, Germany DA - 2004-07-07 PY - 2004 AN - OPUS4-5353 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sarma, Dominik T1 - Core-Shell Particles: Novel Platforms for Suspension Array Technologies (SAT) N2 - Suspension arrays play an important role in recent developments of multiplexed proteomic and genomic assays. Using cytometry, this microparticle-based analytical method features several advantages compared with flat array technologies such as facile fabrication of the analytical platform, high analytical surface area, fast reaction kinetics and a high analytical throughput. Since the first immunoassay for soluble antigens employing flow cytometry in 1982 by Lisi et al., enormous improvements were made concerning the assay chemistry and multiplexing capabilities of this technique. Recently, bead-based applications in microfluidic devices were studied which show promising abilities in point-of-need technologies. However, for adequate performance highly monodisperse and low density particles are required to guarantee proper correlation and to prevent sedimentation. Usually polymeric particles, such as polystyrene and PMMA spheres, fulfill these requirements and offer good accessibility in standard equipped laboratories. Major limitations here are rather restricted possibilities for post-modifications of the surface and sensitivity to organic solvents. A way to circumvent these issues, while retaining the key requirements for suspension array applications, is silica coating of polymeric particles. Not only thermal and chemical stability is increased, but further modifications of a well-defined silica surface with a huge variety of commercial available silanes are accessible. To the same time, the polymeric core can be modified with additional functions, such as magnetic properties or optical identification tags. This contribution presents a synthetic approach to prepare SiO2@PS core-shell particles with architectures ranging from smooth to raspberry and core-satellite assemblies. We use flow cytometry to characterize the shell thickness, monodispersity and available surface area of the particles. Approaches toward multiplexing strategies and single particle analytics using ratiometric signaling via FRET show the great potential of these hybrid composites to address future challenges in SATs. T2 - 9. Deutsches BioSensor Symposium CY - München, Germany DA - 2015-03-11 PY - 2015 AN - OPUS4-34826 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Russo, Francesco Friedrich T1 - Upscaling of spectral libraries for HREI- MS based non target analytics N2 - Gas Chromatography coupled with Electron Ionisation Mass Spectrometry (GC-EI-MS) is a well-established technique which, in combination with spectral libraries, has the potential to identify compounds in a sample. Nevertheless, most libraries are dominated by spectra with nominal mass resolution which does not allow to make full use of the data generated by modern high-resolution instruments. The production of high-resolution spectral library is time consuming and expensive, while in silico fragmentation tools that are capable of generating HR mass spectra are still too computationally intensive. We explored the alternative of using ML models to upscale existing spectral libraries. The models were trained with spectra from the RECETOX metabolome (DOI: 10.5281/zenodo.5483564), RECETOX Exposome (DOI: 10.5281/zenodo.4471216), and MassBank (10.5281/zenodo.7436394) HR-GC-MS libraries. The model was used to generate a synthetic library which was compared with a synthetic library simulated with CFM-ID (DOI: 10.1021/acs.analchem.6b01622). T2 - ANAKON 2023 CY - Vienna, Austria DA - 11.04.2023 KW - ML KW - GC-MS KW - EI-MS PY - 2023 AN - OPUS4-57358 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prakash, Swayam T1 - Silane Functionalized Paper Test Strips for Rapid and Sensitive Faecal Pigments Detection towards On-site Water Quality Testing N2 - Introduction. W.H.O estimated that globally at least 2 billion people use drinking water sources contaminated with faeces and according to UNICEF, most of these faecal detection methods are expensive, time-consuming (18–24 h time to result), and, with few exceptions, not suited for on-site analysis. Hence, there is an urgent need for the development of analytical methods that allow to unequivocally test for drinking water quality directly on-site. Aims. Development of rapid and sensitive fluorescence based analytical methods for faecal pigments (FPs) detection towards on-site water quality testing. Methods. Silane functionalized glass fiber paper test strips were developed for the sensitive drop-&-detect analysis of FPs. Drop casting of water samples containing faecal pigment on specifically functionalized test strips allowed the sensitive detection of FPs with a smartphone coupled to a 3D printed optical setup. Results. A series of silanes were used to functionalize glass fiber paper and tune its hydrophobicity, exploiting the influence of matrix tailoring to enhance binding of the Zn salt used as co-reagent to urobilin for optimal fluorescence response. Combination of bis(2-hydroxyethyl)-3-aminopropyltriethoxysilane with zinc chloride-impregnated test strips demonstrated optimum fluorescence response for sensitive (nano- and sub-nanomolar concentration) smartphone-based faecal pigments detection. The obtained fluorescence sensing results were validated with a benchtop fluorometer. Furthermore, the developed analytical method was successfully applied to the analysis of real water samples. Conclusions. The possibilities of matrix tailoring and co-reagent nature on the development of a rapid, sensitive, and embedded fluorescence-based on-site strip test are presented and discussed. This technique has potential application for faecal biomarker detection/primary screening for water quality in developing countries, where sophisticated instruments may not be available. T2 - 18th Conference of Methods and Applications in Fluorescence CY - Valencia, Spain DA - 08.09.2024 KW - Faecal contamination KW - Fluorescence KW - Metal complexes KW - Water analysis PY - 2024 AN - OPUS4-61479 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Descalzo, Ana B. T1 - Novel Modular Sensors: Design of Efficient Probes for Various Analytes Utillzing the Phenoxazinone Chromophore T2 - 8th Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Prague, Czech Republic DA - 2003-08-24 PY - 2003 AN - OPUS4-4890 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Britta T1 - Zertifizierung von Referenzmaterial am Beispiel des Kalibrationssatzes Reinkupfer T2 - CANAS '05 CY - Freiberg, Germany DA - 2005-03-06 PY - 2005 AN - OPUS4-6701 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfeifer, Jens T1 - Application of glow discharge mass spectrometry for the analysis of high purity magnesium using pressed powder samples with different doping types T2 - 2nd International Glow Discharge Spectroscopy Symposium CY - Prague, Czech Republic DA - 2014-04-06 PY - 2014 AN - OPUS4-31492 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Climent Terol, Estela T1 - Dual detection of the explosives TATP (triacetone triperoxide) and TNT (trinitrotoluene) using antiboby-gated mesoporous silicia materials T2 - Network Meeting of the Alexander von Humboldt Fundation CY - Bremen DA - 2015-04-15 PY - 2015 AN - OPUS4-33540 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfeifer, Jens T1 - RSFs for nickel matrix using doped pressed powder samples as needed for fast flow glow discharge mass spectrometry (GD-MS) N2 - Direct current (DC) fast flow glow discharge mass spectrometry is an important and versatile tool for multielemental trace analysis of conductive solid materials down to the µg/kg level. Special benefits are minimum demands on sample preparation, avoiding losses and contamination, and only short analysis time. For fast flow GD sources, the quantification strategy based on relative standard sensitivity factors (Standard RSFs) which are independent of matrix is not sufficiently satisfying regarding accuracy for each matrix and element [1]. Therefore matrix-matched calibration samples (MMCS) are required to achieve reliable quantification. In fact, the list of existing certified reference materials (CRM) appropri-ate for calibration in trace analysis is rather short. Convenient synthesis of homogeneous MMCS, as e.g. easily obtained in liquid sampling spectrometry, can facilitate the application of fast flow GD-MS for quantification of impurities in a variety of matrices. Pressing of metal powders for the preparation of MMCS for GD-MS was suggested earlier [2], the method was further modified by use of analyte solutions for doping of rather pure metal powders such as Cu and Zn [3], but has not yet been applied Ni matrix. In the present work we describe the determination of matrix-dependent relative sensitivity factors (RSFs) for Mg, Al, Cr, Mn, Fe, Co, Cu, Zn, Ag, Cd, Tl, Pb and Bi in pure Ni by using the liquid doping approach for the preparation of synthetic pressed Ni-powder samples. A four point-calibration was used applying the fast flow glow discharge mass spectrometer, Element GD (Thermo Fisher). The determined RSF were verified against suitable CRM and compared with the standard RSF given by the supplier of the instrument. The obtained results demonstrate a satisfying Agreement with the certified values of the CRM and a significant improvement for the quantification of most of the determined elements in comparison with standard RSF. T2 - International glow discharge spectroscopy symposium CY - Liverpool, UK DA - 18.04.2016 KW - GD-MS KW - Glow discharge KW - Nickel RSF KW - Calibration KW - Quantification PY - 2016 AN - OPUS4-35818 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennrich, G. T1 - Supramolecular Assembly of NLO-active Persubstituted 1,3,5-Trisalkynylbenzenes T2 - XIIIth International Symposium on Supramolecular Chemistry, University of Notre Dame CY - Notre Dame, IN, USA DA - 2004-07-25 PY - 2004 AN - OPUS4-4498 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Silke T1 - Spurenbestimmung in Metallmatrices mit ICP-MS T2 - 6. Symposium Massenspektrometrische Verfahren der Elementspurenanalyse / 18. ICP-MS Anwendertreffen CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4768 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Macrocycles in a Different Light: The Influence of the Nature and Substitution Pattern of Heteroatoms on the Photophysics of Chromophore-Appended Crown Ethers T2 - 28th International Symposium on Macrocyclic Chemistry CY - Gdansk, Poland DA - 2003-07-13 PY - 2003 AN - OPUS4-4889 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marcos, M. Dolores T1 - Organic-inorganic hybrid materials for optical detection of anionic and neutral species T2 - Europt(r)ode VII CY - Madrid, Spain DA - 2004-04-19 PY - 2004 AN - OPUS4-5173 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Intramolecular Charge-Transfer Characteristics of Fluorescent Donor-[Ethynyl-Donor]n (n=1,2) Dyads and Triads T2 - 8th Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Prague, Czech Republic DA - 2003-08-24 PY - 2003 AN - OPUS4-4894 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Röhr, Holger T1 - Highly Fluorescent Sensor Molecules Emitting in the Red - A New Class of Boron-Dipyrromethene Dyes T2 - 8th Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Prague, Czech Republic DA - 2003-08-24 PY - 2003 AN - OPUS4-4892 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kovalchuck, Anton V. T1 - New Anion-Sensitive Fluorescent Probes T2 - 8th Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Prague, Czech Republic DA - 2003-08-24 PY - 2003 AN - OPUS4-4891 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Descalzo López, Ana Belén T1 - Mesoporous Silicia materials with covalently anchored phenoxazinone dyes as fluorescent hybrid materials for vapour sensing T2 - Anakon 2007 CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14863 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Silke T1 - Determination of trace elements in iron ore, cast iron and steel materials using ICP-MS T2 - EuroAnalysis XIV CY - Antwerp, Belgium DA - 2007-09-09 PY - 2007 AN - OPUS4-14858 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Britta T1 - Zertifizierung von Referenzmaterial am Beispiel des Kalibrationssatzes Reinkupfer T2 - IGAS CY - Berlin, Germany DA - 2006-11-08 PY - 2006 AN - OPUS4-13772 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Silke T1 - Determination of trace impurities in ceramic materials by ETV-ICP OES as part of round robin tests for the certification of reference materials T2 - ESAS 2008, European Symposium on Atomic Spectrometry CY - Weimar, Germany DA - 2008-09-28 PY - 2008 AN - OPUS4-17981 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Silke T1 - Elementspurenbestimmung in Eisenerzen, Gusseisen und Stahl mittels ICP-MS T2 - 21. ICP-MS Anwendertreffen und 8. Symposium über Massenspektrometrische Verfahren der Elementspurenanalyse CY - Dresden, Germany DA - 2008-09-17 PY - 2008 AN - OPUS4-17979 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - A hybrid chemosensor material for the colorimetric and fluorometric detection of long-chain carboxylates T2 - 9th Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Lisbon, Portugal DA - 2005-09-04 PY - 2005 AN - OPUS4-7428 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - A Chromo- and Fluorogenic Hybrid Chemosensor Material for the Detection of Long-chain Carboxylates T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-7427 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Monte, Christian T1 - Cavity Ring-Down Spektroskopie (CRDS) in der flüssigen Phase mit fs-Laserpulsen T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-7392 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Röhr, Holger T1 - A new highly fluorescent Na+-sensor molecule emitting in the red T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-7400 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Shen, Z. T1 - Design of Highly Sensitive Bifunctional Fluorescent Probes: Synthesis, Electrochemical and Optochemical Studies on a New Class of Boron Dipyrromethene Based Fluoroionophores T2 - 5. International Symposium on Functional Pi-Electron Systems CY - Ulm/Neu-Ulm, Germany DA - 2002-05-30 PY - 2002 AN - OPUS4-10946 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bricks, J. T1 - Pyrylium Styryl Dyes as a New Sensing System for the Colorimetric Detection of Biogenic Amines T2 - XXth Ukrainian Conference on Organic Chemistry CY - Odessa, Ukraine DA - 2004-09-21 PY - 2004 AN - OPUS4-10942 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kovalchuck, Anton V. T1 - A new bifunctional fluoroionophore T2 - XIX IUPAC Symposium on Photochemistry CY - Budapest, Hungary DA - 2002-07-14 PY - 2002 AN - OPUS4-10945 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Britta T1 - Zertifizierung von Referenzmaterial am Beispiel des Kalibrationssatzes Reinkupfer T2 - Tag der Chemie, Freie Universität Berlin CY - Berlin, Germany DA - 2005-06-08 PY - 2005 AN - OPUS4-11904 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Silke T1 - Determination of trace elements in iron ore, cast iron and steel materials using ICP-MS T2 - IGAS-Jahreskolloquium CY - Berlin, Germany DA - 2007-11-08 PY - 2007 AN - OPUS4-16259 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brietzke, T. T1 - 1, 6, 7, 12-Tetraazaperylen - ein neuer symmetrischer Bis(-diimin)-Brückenligand mit großem pi *-Akzeptorpotential T2 - 41. Tagung der Wöhler-Vereinigung CY - Munich, Germany DA - 2008-10-08 PY - 2008 AN - OPUS4-18546 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Silke T1 - Bestimmung von Spuren und deren Bindungsformen in hochreinem Siliciumkarbid - Einsatz direkter Feststoffmethoden und die Bestimmung nach Druckaufschluss T2 - CANAS 2009 CY - Freiberg, Germany DA - 2009-03-22 PY - 2009 AN - OPUS4-19011 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Functional red/NIR dyes and hybrid sensor materials T2 - Working Group Meeting, COST D-31, Working Group 001204 "New Materials for Anion Sensing", School of Chemistry CY - Birmingham, England DA - 2008-01-25 PY - 2008 AN - OPUS4-18547 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Biomimetically Inspired Sensing of Ionic and Neutral Species with Organically Modified Mesoporous Silica Materials T2 - First International Conference on Multifunctional, Hybrid and Nanomaterials CY - Tours, France DA - 2009-03-15 PY - 2009 AN - OPUS4-20644 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brasse, Y. T1 - Delivery of macromolecular drugs via coated silica particles N2 - Modified silica particles are of great interest in biomedical applications, since they can be used e.g. as drug carriers, fluorescent sensors, or multimodal labels in bioimaging. Here we present novel approaches for drug labeled and loaded silica nanoparticles. T2 - NanoMedicine International Conference 2021 CY - Milan, Italy DA - 20.10.2021 KW - Silica nanoparticles KW - Drug delivery KW - Particle modification KW - Cell studies PY - 2021 AN - OPUS4-57728 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Glass-based Reference Standards for Fluorescence Applications T2 - XIII International Symposium on Luminescence Spectrometry CY - Bologna, Italy DA - 2008-09-07 PY - 2008 AN - OPUS4-18055 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Würth, Christian T1 - Characterisation of Particle based Fluorescent Biosensor Systems T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-19419 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Fluorescence standards for the characterization of the performance of spectral scanning fluorescence microscopes T2 - Focus on Microscopy 2006 CY - Perth, Australia DA - 2006-04-09 PY - 2006 AN - OPUS4-12067 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - Encapsulated NIR Chromophores as Intensity Standards for Biosensor Systems T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-19418 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scholz, Norman T1 - Development and Spectroscopic Studies of Ratiometric Nanoscale NIR-emissive Sensors T2 - 8. Interdisziplinäres Doktroandenseminar CY - Berlin, Germany DA - 2014-02-23 PY - 2014 AN - OPUS4-30071 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Brilliant and Functional Herceptin Conjugates with a Remarkably High Number of Bound Fluorophores T2 - MOBI 2013 CY - Heidelberg, Germany DA - 2013-10-28 PY - 2013 AN - OPUS4-29576 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grandke, Julia T1 - Temperature Dependence of Immunoassays T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-24949 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Reliable Photoluminescence Quantum Yields – New Reference Materials and Interlaboratory Comparisons N2 - The rational design and choice of molecular and nanoscale reporters, the comparison of different emitter classes, and photophysical and mechanistic studies require quantitative photoluminescence measurements and the reliable determination of the key performance parameter photoluminescence quantum yield (QY), i.e., the number of emitted per absorbed photons. This is of special importance for all photoluminescence applications in the life and material sciences in the UV/vis/NIR/SWIR. To improve the reliability and comparability of photoluminescence and QY measurements across laboratories, pitfalls, achievable uncertainties, and material-specific effects related to certain emitter classes must be explored. Also, suitable protocols and reference materials are needed which have been validated in interlaboratory comparisons for different wavelength regions and transparent and scattering luminophores.[1] Based on absolute and relative photoluminescence measurements of functional dyes and luminescent nanomaterials, reliable methods for determining QY of transparent and scattering luminophores, nonlinear emitters, and solid luminescent nanomaterials have been developed.[1-4] Thereby, material- and method-related uncertainties of relative and absolute QY measurements and achievable uncertainties could be quantified for linear and nonlinear UV/vis/NIR/SWIR emitters and lately for also luminescent and scattering materials and solid phoshors. In this context, we present the development and certification of a first set of UV/vis/NIR quantum yield standards with a complete uncertainty budget,[5] which present simple tools for a better comparability of QY measurements. In addition, a first interlaboratory comparison of absolute QY measurements of solid and scattering LED converter materials with integrating sphere spectroscopy has been performed.[5] The outcome of this study is presented, thereby addressing common pitfalls and measurement uncertainties and providing recommendations for the performance of reliable QY measurements of linear and non-linear emitters in transparent, scattering, and solid samples. T2 - Anakon 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Quality assurance KW - Reference material KW - Method KW - Fluorescence KW - Quantum yield KW - Absolute KW - Integrating sphere spectroscopy KW - Interlaboratory comparison KW - Dye KW - Film KW - Nano KW - Particle KW - Scattering KW - Uncertainty KW - LED converter PY - 2025 AN - OPUS4-62792 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Borzekowski, Antje T1 - Fungi Isolated from Indonesian Tempeh Production Capable of Zearalenone Conjugation N2 - Zearalenone (ZEN) and its metabolites such as the phase II sulfate and glucoside conjugates have been detected in food and feed commodities1. In addition to these naturally occurring ZEN conjugates, food fermentation by fungi may also lead to conjugate formation. Fungal strains of the genera Rhizopus and Aspergillus are used in tempeh fermentation, and it is known that some strains can conjugate ZEN2. Moreover, during this process the reductive phase I metabolites α- and β-zearalenol (α-/β-ZEL) and their conjugates are formed by the same microorganisms in vitro. As the conjugates can be hydrolysed by human intestinal microbiota, also sulfates and glucosides represent a relevant source for the human exposure to ZEN. If the unprocessed grains for tempeh fermentation like soybeans and/or maize are contaminated with ZEN, upon analysis ZEN content of the final tempeh product may be underestimated, because ZEN has been conjugated during food processing. Very recently, the EU-CONTAM Panel found it appropriate to set a group tolerable daily intake (TDI) expressed as ZEN equivalents for ZEN and its modified forms (phase I and phase II metabolites)3. In this study a total of 70 strains of fungal species commonly found in tempeh fermentation were screened for ZEN metabolite formation in vitro. The fungal strains were isolated from inocula or fresh tempeh from different tempeh producers and market areas in Indonesia. ZEN (c = 0.3 µM) was added to liquid cultures of the fungi. After two days of incubation the media were analyzed for metabolite formation by HPLC-MS/MS. The conjugate formation varied with the fungal strain. In most cultures ZEN-14-sulfate was the major metabolite accompanied by rapid disappearance of ZEN; also, formation of α- and β-ZEL, ZEN-16-glucoside and two ZEL-sulfates has been observed. The in vitro-screening showed that fungal strains used in tempeh fermentation have the potential for ZEN conversion leading to ZEN and ZEL conjugate formation. Therefore, reference substances of ZEN conjugates are urgently needed for monitoring food safety of tempeh and other fermented products manufactured from grains that can be contaminated with ZEN. T2 - 39th Mycotoxin Workshop CY - Bydgoszcz, Poland DA - 19.06.2017 KW - Mycotoxin KW - Tempeh PY - 2017 AN - OPUS4-40964 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute A1 - Fallisch, A. A1 - Petrov, E. P. A1 - Salhany, R. A1 - Forthman, C. A1 - Guttenberg, Z. A1 - Nitschke, R. T1 - Spectral fluorescence standards for the calibration and performance validation of fluorescence microscopes N2 - The standardization and calibration of fluorescence microscopy have become increasingly vital due to the wide-spread use of in life and materials sciences. As the demand for reliable and user-friendly methods to assess micro-scope performance grows, universal calibration tools accessible to both researchers and vendors are needed. To support the standardization of characterization methods in microscopy, it is crucial to provide calibration tools together with standardized operating procedures for their effective implementation. The public-funded project "FluMiKal"* develops calibration tools in the shape of typical microscopic slides to assess key parameters such as spatial resolution, point spread function, spectral sensitivity, linearity and sensitivity of the detection system. The focus is on creating calibration tools that are user-friendly, robust, and versatile in their application. This work addresses the critical parameter of wavelength-dependent spectral sensitivity, which affects the meas-ured signals from the instrument side, yielding instrument-specific data and instrument aging-induced changes over time. For this purpose, μ-slides from ibidi with six channels are used, allowing them to be filled with different solutions containing molecular or nanoscale fluorophores with well-characterized absorption and fluorescence properties. The certified spectral fluorescence standards BAM-F003, F004, F005, and F007 assessed provided as ethanolic solutions by the Federal Institute for Materials Research and Testing (BAM), cover a broad spectral range from the blue to the near-infrared [1], [2]. Dye-based slide prototypes have been used to determine the spectral sensitivity of confocal microscopes from different vendors with various detector types by acquiring the spectral data of the BAM dyes under standardized measurement conditions, demonstrating the applicability of this concept. Proof-of-concept experiments could demonstrate the proper sealing of the slides. Further experiments will explore long-term stability and their potential as standards for relative intensity calibrations. * FluMiKal is funded by the Federal Ministry for Economic Affairs and Climate Action, Germany (WIPANO FKZ 03TN0047B) [1] doi: 10.1007/4243_2008_028. [2] doi: 10.1007/s00216-024-05723-w. T2 - European Light Microscopy Initiative - ELMI 2025 CY - Heidelberg, Germany DA - 03.06.2025 KW - Fluorescence KW - Advanced material KW - Validation KW - Calibration KW - Method comparison KW - Reference material KW - Dye KW - Fluorescence standard KW - Microscopy KW - CLSM KW - Imaging PY - 2025 AN - OPUS4-64206 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merkel, Stefan T1 - Analysenverfahren zur epimierungsfreien Analytik von Ergotalkaloiden T2 - Berliner Chemie Symposium (Jungchemikerforum) der Humboldt-Universität Berlin CY - Berlin, Germany DA - 2011-04-07 PY - 2011 AN - OPUS4-23505 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - Simple Approaches to Fluorescence Lifetime Standards Using Dye-Quencher Pairs T2 - BMT 2012 - Tagung der Biomedizinischen Technik CY - Jena, Germany DA - 2012-09-16 PY - 2012 AN - OPUS4-27071 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Rationally Designed NIR-Flourescent Nanoparticles for Bioanalytical Applications T2 - EUCheMS 2012 CY - Prague, Czech Republic DA - 2012-08-26 PY - 2012 AN - OPUS4-27807 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Novel reference materials for mycotoxins in food T2 - BERM-13 CY - Vienna, Austria DA - 2012-06-25 PY - 2012 AN - OPUS4-26007 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brehm, Robert T1 - Influence of the number of sulfonate groups and dye hydrophilicity on fluorescence quantum yield and binding to plasma proteins in vitro T2 - Molekulare Bildgebung 2009 CY - Berlin, Germany DA - 2009-06-18 PY - 2009 AN - OPUS4-19674 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Characterization of Surface Functionalities of Plasma-modified Polymer Films by Fluorescence Spectroscopy and Microscopy T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-7390 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Fluorescence studies on functionalized polypropylene supports using an amino-sensitive fluorogenic pyrylium T2 - Method and Application of Fluorescence (MAF10) CY - Salzburg, Austria DA - 2007-09-09 PY - 2007 AN - OPUS4-16409 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Reference Materials for Standardization of Fluorescence-based Measurements N2 - Here, we summerize our efforts concerning new design concepts and examples for fluorescence standards that can provide traceability to radiometric units and present a first step towards a toolbox of fluorescence standards, currently consisting of: i) A first set of liquid fluorescence standards enables the determination of a broad variety of fluorescence parameters was developed and certified by BAM and is distributed by Sigma-Aldrich. ii) Ready-to-use, glass-based fluorescence standards for instrument performance validation (IPV) and determination instrument-to-instrument variations can also be used as wavelength standard for fluorescence instruments with low requirements on spectral resolution and allow monitoring of temporal changes of the wavelength-dependent spectral responsivity. iii) Novel calibration tools and validation concepts for microarray-based platforms used in molecular diagnostics and food safety control. iv) We currently develop reference materials, which can be used as reliable quantum yield standards for relative methods for the determination of QY and can be valuable in the evaluation of the performance and sources of uncertainty of absolute, standard-free methods using e.g. integrating spheres. T2 - 14th Conference on Methods and Applications in Fluorescence CY - Würzburg, Germany DA - 13.09.2015 KW - Fluorescence KW - Standards KW - Quantum yield KW - Microarray PY - 2015 AN - OPUS4-38882 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Würth, Christian T1 - Determination of brightness values of luminescent particles T2 - 23rd Lecture Conference on Photochemistry CY - Potsdam, Germany DA - 2012-10-08 PY - 2012 AN - OPUS4-26677 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - Encapsulation of NIR dyes: Comparison of different dye classes, spectroscopic evaluation, and stability studies T2 - 11th International Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Budapest, Hungary DA - 2009-09-06 PY - 2009 AN - OPUS4-20423 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mantha, Anant T1 - Immobilised gold nanoparticles for an optofluidic SERS platform N2 - The combination of SERS with microfluidics not only miniaturises the system but also introduces the possibility to control the environmental parameters of the analyte, which is not present when using either a droplet or cuvette. This allows for applications involving tiny sample volumes and control of sample environments. Direct usage of nanoparticles in solution with the analyte can cause the adsorption of the nanoparticles onto the surfaces of microfluidic systems, leading to undesirable memory effects. By using plasmonic nanoparticles of gold, silver or a mixture of the two, immobilised on removable glass or PDMS inserts, the life and reusability of the channels can be largely improved [1] because they can be inserted into the channel and replaced after use. Using immobilised nanoparticles also introduces a relatively large surface that can be scanned and can improve the reproducibility of the nanoparticle substrate properties and hence the measured spectra. Here, we will discuss strategies for the fabrication and characterization of immobilised plasmonic nanoparticles for bioanalytical applications in optofluidic systems. We will present the plasmonic properties as well as surface-enhanced Raman scattering (SERS) data of relevant compounds. T2 - Molecular Plasmonics 2025 CY - Jena, Germany DA - 15.05.2025 KW - SERS KW - Microfluidics KW - Mikrofluidik PY - 2025 AN - OPUS4-63259 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Morcillo, Dalia T1 - Atomic absorption spectrometry with machine learning as a tool for lithium isotope analysis N2 - The general interest in the implementation of renewable energies, particularly in the development of lithium-ion batteries, makes lithium a key element to be analyzed. We are working to develop this tool to determine if the isotopic effect of lithium has an impact on battery aging. T2 - SALSA Konferenz CY - Berlin, Germany DA - 16.09.2021 KW - Atomic absorption spectrometry KW - Battery KW - Machine learning KW - Lithium KW - Isotope PY - 2021 AN - OPUS4-53693 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marquardt, R. A1 - Osayi, J. A1 - Kmieciak, S. A1 - Biegler, M. A1 - Rethmeier, Michael T1 - Verschleißschutz einer Schneckengeometrie durch funktional gradierte Materialien N2 - Hochbelastete Stahlbauteile lassen sich durch Auftragen von Kobalt-Chrom Legierungen vor Verschleiß schüt-zen. Die plötzliche Änderung der Materialeigenschaften führt jedoch zu Spannungen und Rissen im Anbindungs-bereich. Daraus resultierende Abplatzungen stellen eine Gefahr für die Funktionsfähigkeit der Maschine und damit für Mensch und Umwelt dar. Um die Belastbarkeit der Schutzschicht zu verbessern, kann die Anbindung durch einen gradierten Materialübergang optimiert werden. Diese funktional gradierten Materialien können mit-tels pulverbasiertem Directed Energy Deposition aufgetragen werden. Die Methodik zum Aufbau und zur Quali-tätssicherung solcher Materialien wurde in vorangegangenen Arbeiten für dickwandige Geometrien gezeigt. Für dünnwandige Geometrien ist die Anwendbarkeit bisher unzureichend untersucht worden. Diese Arbeit zeigt am Beispiel einer dünnwandigen gradierten Schneckengeometrie die Einsatzfähigkeit der Methodik. Dafür wird die Gefügestruktur der Gradierung auf Fehler untersucht und der Härteverlauf gemessen. Außerdem wird die relative Dichte anhand eines bereits trainierten neuronalen Netzes vorhergesagt und mit einer Porositätsuntersuchung verglichen. T2 - 14. Tagung Verschleiß- und Korrosionsschutz von Bauteilen durch Auftragschweißen CY - Halle (Saale), Germany DA - 12.06.2024 KW - Directed Enery Deposition KW - Funktionally Graded Material KW - Additive Manufacturing KW - DED KW - FGM KW - AM PY - 2024 AN - OPUS4-62688 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Agudo Jácome, Leonardo T1 - In situ electron-beam 'melting' (sublimation) of gold microparticles in the SEM N2 - Gold micro particles have been modified in the past using the high power density of a localized electron beam of acceleration voltages above 100 kV as an energy source to transform matter at the sub-micron scale in a transmission electron microscope uses. Here, the e-beam-induced transformation of precursor microparticles employing a low-energy e-beam with an acceleration voltage of 30 kV in a scanning electron microscope is implemented. Under these conditions, the technique can be classified between e-beam lithography, where the e-beam is used to mill holes in or grow some different material onto a substrate, and e-beam welding, where matter can be welded together when overcoming the melting phase. Modifying gold microparticles on an amorphous SiOx substrate reveals the dominant role of inelastic electron-matter interaction and subsequent localized heating for the observed melting and vaporization of the precursor microparticles under the electron beam. Monte-Carlo scattering simulations and thermodynamic modeling further support the findings. T2 - IKZ International Fellowship Award & Summer School 2025 from May 5 to 7, 2025 CY - Berlin, Germany DA - 05.05.2025 KW - Gold Nanoparticle KW - Scanning Electron Microscopy KW - In situ irradiation KW - Thermodynamic modelling KW - Heat Transfer PY - 2025 AN - OPUS4-63256 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heller, Benedikt T1 - Reaction-based detection of cyanide anions using a non-fluorescent polymer via “turn-on” fluorescence N2 - Cyanide is known to be a very hazardous and toxic substance. Through the binding to cytochrome oxidase it inhibits the oxygen utilization in cells. The LD50 of cyanide is as low as 1.0 mg/kg. Therefore it is inalienable to develop sensing methods to detect cyanide with a very high selectivity and sensitivity. In our group we developed a non-fluorescent monomer which is able to detect cyanide-anions with very high selectivity and sensitivity based on a “turn-on” fluorescence method. As cyanide-source we used tetrabutylammoniumcyanide (TBAC). Using an excitation wavelength of 600 nm the increase in fluorescence at 642 nm is strictly selective with cyanide-anions. Different anions like fluoride, hydroxide or acetate show no increase at all. With this new detection system, concentrations as low as 1.6 nM can be detected. T2 - Europ(t)rode 2018 CY - Naples, FL, USA DA - 25.03.2018 KW - Cyanide detection KW - Fluorescence KW - Optical sensing PY - 2018 AN - OPUS4-45663 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Carl, Peter A1 - Schneider, Rudolf T1 - A wash-free, multiplex microbead assay for determination of emerging bioactive compounds in wastewater N2 - Pollutants of low molecular weight, such as drug residues, are in the focus of water quality assessment: some of them, like carbamazepine are only partially degraded in wastewater treatment plants. Thus, these pollutants can serve as marker substances for elimination efficiencies. Monitoring water quality demands for selective, high-throughput and multi-target analytical methods. Immunoassays, such as ELISA, offer the possibility to be highly sensitive and selective due to the specific recognition by high affinity of target molecules to antibodies (Abs). Batch-wise processing in microtiter plates allows for the necessary high-throughput, however only a single analyte can be determined within one measurement. To overcome these disadvantages, we developed a four-plex microbead-based flow cytometric assay, which is adaptable for the microtiter plate format. The modular and self-prepared bead support consists of polystyrene-core/silica-shell particles. While, the polystyrene core is used for encoding, by introducing different amounts of fluorescent dyes, the silica shell creates a solid support for the immunoassay: The target analytes, three drugs, carbamazepine, diclofenac and caffeine and the fecal marker isolithocholic acid are coupled covalently to the surface via NHS chemistry to amino groups on the surface. For determination of the pollutants, a mixture of specific Abs is incubated with the samples, to bind competitively on the “anchor” molecules on the surface of the beads or the analyte in solution. Bound antibodies are then visualized via fluorescent dye-labelled secondary Abs. Flow-cytometry allows for decoding of the beads and signal read-out, without washing the system. In order to decrease non-specific binding, we investigated different types of surface modifications, finding, that a PEG-based surface is suitable to support our immunoassay format. For maximum sensitivity, a design-of-experiment approach was chosen for optimization of the assay parameters. The resulting immunoassay is appropriate to quantify the pollutants in the low μg/L-range. T2 - EBS 2017 CY - Potsdam, Germany DA - 20.03.2017 KW - Immunoassay KW - Bead-based assay KW - Flow-cytometry PY - 2017 AN - OPUS4-39522 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wagner, Sabine T1 - Detection of antibiotics by combining fiber-optic array with microparticles coated with fluorescent molecularly imprinted polymers N2 - The widespread use of antibiotics in livestock farming leads to trace residues in food products and wastewater, potentially entailing antimicrobial resistance in food-borne pathogens. The determination of antibiotics in aqueous environments and foodstuff is thus of major concern. We have been developing optical sensors based on molecularly imprinted polymers (MIPs) due to the low production costs, stability, format adaptability and the possibility to imprint and thus their ability to recognize a wide variety of target analytes. As a fluorescently responding moiety in the polymer matrix a tailor-made fluorescent indicator cross-linker for direct transfer of the binding event into an optical signal was used. If such a cross-linker is integrated into a thin MIP-shell on microspheres such core/shell particles can be readily used in advanced multiplexing sensory fiber-optic microarrays. Here, we propose such a fiber-optic microarray based on fluorescent MIP microspheres for antibiotics. The binding behavior and the selectivity of a microarray using these silica core/MIP shell beads were examined and compared with a non-imprinted polymer (NIP) control, employing the target molecules and other structurally closely related antibiotics. T2 - APME2017 CY - Ghent, Belgium DA - 21.05.2017 KW - Molecularly imprinted polymers KW - Multiplexing sensory fiber-optic microarrays KW - Antibiotics PY - 2017 AN - OPUS4-40583 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ros-Lis, J.V. T1 - 1,4-Dioxa-7,13-dithia-10-aza-cyclopentadecane: a selective receptor for the design of chromo-fluorogenic chemical sensors for Hg2+ T2 - 30th International Symposium on Macrocyclic Chemistry CY - Dresden, Germany DA - 2005-07-17 PY - 2005 AN - OPUS4-7429 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - You, Zengchao T1 - Chemometrical analysis of spectral data obtained from glow discharge optical emission spectroscopy for elemental analysis of metals N2 - The poster shows the combination of GD-OES and machine learning. The gola of this project is to establish a new and robust calibration model, which can be used to identify elemental composition and concentration of metals from a single spectra. T2 - Salsa make and measure Konferenz CY - Online meeting DA - 16.09.2021 KW - Glow discharge optical emission spectroscopy KW - Machine learning PY - 2021 AN - OPUS4-53323 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bell, Jérémy A1 - Biyikal, Mustafa A1 - Rurack, Knut T1 - Embedded sensor based on tandem smartphone-microfluidic device for the detection of TNT in surface and sea waters N2 - The globe's seas were used as dumping ground after the world wars and those millions of ammunition, most of all containing 2,4,6-trinitrotoluene (TNT), represent a pressing danger for fishermen, dredging operations, submarine cable installations and tourism. We developed an extremely selective indication method for TNT based on a specific reaction that produces a highly fluorescent compound. The indication system was integrated into a microfluidic PDMS chip for the solid-liquid extraction of TNT from water samples, offering environmental monitoring possibilities. Combining the advantages of a light-up indicator, microfluidics and a smartphone as detector, the embedded sensor allows for the remote and rapid detection of TNT down to ng in surface and sea waters. T2 - µTAS 2020 CY - Online meeting DA - 05.10.2020 KW - Smartphone KW - Rapid test KW - TNT KW - Ammunition KW - Schnelltest KW - Munition PY - 2020 AN - OPUS4-51444 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zhang, Y. T1 - Fluorescent molecularly imprinted polymers (MIPs) as novel tools for detection of sialic acid on tumor cells N2 - Cancer is the second leading cause of death globally according to the WHO 2018. Lung, prostate, colorectal, stomach and liver cancer are the most common types of cancer in men, while breast, colorectal, lung, cervix and thyroid cancer are the most common among women. Sialic acid (SA) plays an important role in a variety of biological processes in cells. Tumor cells express high levels of SA, which is often associated with poor prognosis due to increased invasive potential. In this study, we have performed a screening of SA-MIPs binding to different cancer cell lines. The overall aim is to use the SA-MIPs for detection of tumor cells, analyzed by flow cytometry and fluorescence microscopy. To confirm the levels of SA expression on the investigated cell lines, we started out by analyzing the binding of the lectins MAL I and SNA. The staining pattern of the two lectins binding to either α-2,3 or α-2,6 linkage SA, respectively, was compared with the staining pattern of the SA-MIPs. We show that the different cell types analyzed have a varying pattern of SA-MIP binding. The comparison with lectin binding will be further evaluated. T2 - Biomarkers – methods and technologies CY - Malmö, Sweden DA - 25.10.2018 KW - Cancer KW - Sialic acid KW - MIPs PY - 2018 AN - OPUS4-46492 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Russo, Francesco Friedrich T1 - Upscaling of spectral libraries for HR- EI-MS based non target analytics N2 - Non-target (NT) mass spectrometry techniques play a crucial role in metabolomics applications, particularly in areas such as environmental safety. Soft ionization methods, such as electrospray ionization (ESI), are commonly employed due to their ability to generate spectra containing molecular ions, aiding in the identification of unknown peaks. However, ESI may fail to ionize certain compounds effectively, resulting in their absence in NT approaches. In contrast, hard ionization methods like electron impact (EI) can ionize a wide range of compounds but often lack information about the molecular ion. Although extensive databases of EI spectra exist, their nominal mass resolution (NR) limits their utility for modern high-resolution (HR) EI mass spectrometers. Here, the often-applied conversion of HR spectra to nominal mass leads to the loss of unique characteristics, i.e. by grouping distinct masses into more ambiguous nominal masses. Our study aims to (i) quantify the negative impact of such a binning approach and (ii) develop a machine learning (ML) tool capable of enhancing existing nominal mass spectral libraries. In the initial phase, we employed the RECETOX Exposome HR-[EI+]-MS library to assess the influence of HR spectra on identification. We compared the dot product of each spectrum against all others, utilizing bin sizes of 0.001 and 1 Da. The difference in dot product between the second-best candidate and the query spectrum (the best candidate, with a score of 1) was calculated for both HR and nominal mass spectra. Subsequently, we explored the application of ML techniques to predict HR spectra from nominal mass spectra using the before mentioned dataset. Preliminary findings demonstrate the potential of high-resolution spectral libraries. As anticipated, HR spectra consistently exhibited lower similarity scores for the second candidate. This observation likely stems from the high redundancy and resulting ambiguity associated with nominal masses. Even after eliminating spectra containing multiple HR masses mapped to the same nominal mass, the aforementioned trend persisted. Furthermore, initial investigations into ML have revealed its ability to predict up to 40% of HR masses within a 10 mDa precision window. T2 - Tag der Chemie 2023 CY - Berlin, Deutschland DA - 05.07.2023 KW - HR-EI-MS KW - ML PY - 2023 AN - OPUS4-58172 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wagner, Sabine T1 - Investigation of the Recognition Behavior of Molecularly Imprinted Polymers against Amino Acids by Using different Counter-ions T2 - Anakon 2015 CY - Graz, Österreich DA - 2015-03-23 PY - 2015 AN - OPUS4-33745 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wagner, Sabine T1 - Fluorescent Nanosensor based on Molecularly Imprinted Polymer for the Detection of Contaminants in Water N2 - As the interest in rapid and sensitive detection methods is growing, molecularly imprinted polymers (MIPs) are increasingly considered as an alternative to bio-macromolecular recognition units such as antibodies or enzymes due to their facilely tailorable selectivity towards certain analytes or a group of structurally related species. The low production costs, stability, robustness and format adaptability of MIPs combined with the possibility to imprint and thus their ability to recognize a wide variety of target analytes can be potentially useful in chemical sensor applications.[1] With regard to optical sensing technologies, however, MIPs have only been used in considerably few applications, especially in fluorescence sensors. This limitation is basically due to the fact that the incorporation of a fluorescently responding moiety into a polymer matrix is a challenge. One way to overcome this limitation is to use tailor-made fluorescent indicator monomers and thin MIP-shells on silica particles.[2] Here, we present silica sensor particles with a thin MIP layer which was grown onto the silica surface via reversible addition-fragmentation chain transfer (RAFT) polymerization. The homogeneous MIP shell contains fluorescent phenoxazine-urea monomers as signal generation elements. The carboxylate salts of the antibiotic ampicillin (AMPI) and the herbicide 2,4 dichlorophenoxyacetic acid (2,4-D) were used as templates in those studies. In this case, hydrogen bonds are formed between the urea group of the fluorescent monomer and the carboxylate group of the template. To investigate the binding behavior of the MIPs and the control non-imprinted polymer (NIP) particles in terms of discrimination and imprinting factor, titration experiments with AMPI and 2,4-D salts were performed directly in organic solution. In order to study the detection possibilities in aqueous solution, a simple phase-transfer assay using fluorescence spectroscopy was investigated for both analytes. T2 - Adlershofer Forschungsforum 2016 CY - Berlin, Germany DA - 2015-11-11 PY - 2015 AN - OPUS4-35238 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Multifunctional hybrid microparticles for rapid cytometric and microfluidic mix-&-detect bioassays N2 - Besides the application-oriented parameters selectivity and sensitivity, simplicity and speed as well as robustness and reliability are the key features that determine success, dissemination and acceptance of analytical assays and methods for use in the field. For bioassays based on antibodies or nucleic acid binders, bead-based assays have become one of the main working horses of lab-based methods. However, these approaches are often limited by complicated and time-consuming workflows, which are mainly compensated by massive parallelisation, keeping the average cost and time-to-result within acceptable limits due to the sheer number and constant flow of samples processed. In on-site applications, where analyses need to be performed on suspicion or on demand because results are needed as quickly as possible for proactive decision making, the number, frequency and type of samples are much more diverse, so analytical assays need to be adapted to remain cost-effective and operable by non-expert users in environments where no lab infrastructure is available. With this in mind, we have developed a multifunctional hybrid microparticle platform that enables fast and simple mix-&-detect bioassays in combination with fluidic cytometry- and chip-based analytical methods. The present contribution will give an overview of the beads, their functions and how they can be combined with immunoanalytical and nucleic acid-based detection technologies. Starting from simple polymeric core/silica shell particles [1], we have progressively introduced coding [2,3], anti-fouling [2], high-surface area [4] and magnetic schemes [5] and in recent years have shown how these beads can be used in simple mix-&-detect assays for a range of different environmental, health and food analytes [1-5]. In addition to cytometry, we have also successfully implemented such assays using miniaturised microfluidic and strip-based approaches [6]. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Bead-based assay KW - Core-shell particles KW - Lab-on-a-chip KW - Mycotoxin PY - 2025 AN - OPUS4-62766 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Saleh, Maysoon I. A1 - Kembuan, C A1 - Rühle, Bastian A1 - Graf, C A1 - Resch-Genger, Ute T1 - Gold-shell coated NaYF4:Er3+, Yb3+ nanoparticles for the enhancement of fluorescence emission N2 - In the present work, we aim to explore how far the UCNP emission intensity can be enhanced by the aid of plasmonic interactions using a gold shell. The distance between the UCNP core and the gold shell is varied by adding a silica spacer of different thicknesses. The synthetic conditions for obtaining UCNP@SiO2@Au core-shell nanoparticles with precisely tuneable silica shell thicknesses were investigated. A gold shell on the UCNP@SiO2 nanoparticles is expected to give rise to a noticeable enhancement of particle brightness and fluorescence, given that the thicknesses of the silica shell and the gold coating can be controlled and fine-tuned. First single particle studies revealing shortening of the Er3+ lifetimes suggest that plasmonic enhancement occurs. T2 - 2nd Conference and Spring School on Properties, Design and Applications of Upconversion Nanomaterials CY - Valencia, Spain DA - 02.04.2018 KW - Upconversion nanoparticles KW - Silica coating KW - Plasmonic enhancement PY - 2018 AN - OPUS4-44969 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Reference materials for Ochratoxin A in coffee and wine T2 - XIIth International IUPAC Symposium on Mycotoxins and Phytotoxins CY - Istanbul, Turkey DA - 2007-05-21 PY - 2007 AN - OPUS4-14470 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Werneburg, Martina T1 - In situ analysis of trichodiene as a volatile biomarker for the fast and non-invasive gas-phase analysis of cereal mycotoxins N2 - Typically, mycotoxigenic moulds and consequently small percentages of extremely contaminated portions (“hot spots”) are randomly distributed in a cereal lot. Therefore, an efficient sampling procedure for mycotoxin analysis represents a complex challenge for operators involving invasive and cost intensive steps. Establishing an in situ analysis of mycotoxins from the homogeneous gas-phase above cereal crops instead of analysing random samples could address this difficult issue. During studies for microbial volatile organic compounds (MVOCs) indicating an infection with Fusarium, trichodiene was identified as a unique biosynthesis intermediate of trichothecenes - one of the largest groups of the mycotoxin family. The sesquiterpene trichodiene is the only volatile biogenic precursor of the trichothecenes, thus, early and fast in situ detection of this biomarker might be of interest for a potential trichothecene infestation. However, there is no commercial trichodiene standard available needed for the quantification of trichodiene in cereal grains. The aim of the current project is to develop a fast, easy-to-handle and non-invasive gas-phase quantification of trichodiene in the field. Therefore, trichodiene was prepared by total synthesis based on a tandem orthoester Claisen rearrangement - oxidation - Robinson annulation strategy providing the racemic natural product in 9 steps and 8 % overall yield. Its structure was fully elucidated by NMR and MS. With the reference standard in hand, a protocol was established for the quantitative headspace analysis of trichodiene above crop spikes by GC/MS in the < 10 µg/kg range. Besides a sample survey and a trichodiene - trichothecene correlation study, it is aimed to transfer the validated analytical method from the laboratory into a field-portable analytical system. The fast and reliable in situ detection of trichodiene as a volatile biomarker for trichothecene mycotoxins will contribute to a reduction of food production/analysis costs and to an improvement of food safety. T2 - 38th Mycotoxin Workshop CY - Berlin, Germany DA - 02.05.2016 KW - Fungal Volatiles KW - Fusarium Mycotoxins KW - Trichodiene KW - Headspace Analysis KW - Synthesis PY - 2016 AN - OPUS4-36193 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schreiner, M. A1 - Krumbein, A. A1 - Rohn, S. T1 - Entwicklung eines HPLC-MS/MS basierten Isotopenverdünnungsverfahrens zur Quantifizierung des Cyanotoxins Cylindrospermopsin in Brassica-Arten T2 - Deutscher Lebensmittelchemikertag CY - Berlin, Germany DA - 2013-09-16 PY - 2013 AN - OPUS4-29127 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leiterer, Jork T1 - Acoustically levitated droplets - new sampling method for fluorescence studies T2 - Methods and Applications of Fluorescence (MAF), Congress Center CY - Salzburg, Austria DA - 2007-09-09 PY - 2007 AN - OPUS4-14698 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drzymala, Sarah T1 - Automated SPE-HPLC for Determination of Zearalenone in Edible Oil T2 - RAFA 2013 (Recent Advances in Food Analysis) CY - Prague, Czech Republic DA - 2013-11-04 PY - 2013 AN - OPUS4-29630 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - Covalent Attachtment of Fluorescent Labels to Plasma-Modified Surfaces T2 - Biosurf VI "Surface-Tissue Interaction" CY - Lausanne, Switzerland DA - 2005-09-21 PY - 2005 AN - OPUS4-10851 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Keller, Julia A1 - Lörchner, Dominique T1 - Development of analytical method and certified reference material for zearalenone in edible oils N2 - Quality and safety of food products require their reliable analysis. Contaminants, in particular mycotoxins, are key-components for food safety. About 25 % of the world's food crops are contaminated with mycotoxins posing a severe health risk to humans. In order to strengthen food safety and consumer protection the European Commission (EC) set maximum levels for priority mycotoxins in certain foods for human consumption. In 2013, the EC and CEN (European Committee for Standardization) started an initiative to standardize analytical methods for mycotoxins in food which gained increasing relevance, e.g. zearalenone (ZEN).[1] ZEN, an estrogenic mycotoxin produced by several Fusarium species, contaminates cereal crops worldwide. Due to its lipophilic nature ZEN is often found in edible oils (particularly in maize germ oils) derived from contaminated plants. Therefore, an European maximum level of 400 µg/kg is currently in force.[2] To perform reliable food analysis a sustainable metrological infrastructure is of major importance enabling the quantification of priority mycotoxins (here: ZEN). To achieve this goal an integrated approach is needed targeted at the development of validated analytical methods and certified reference materials (CRM). A highly selective method for ZEN in edible oils will be presented, based on solid phase extraction (SPE) using hydrazine-functionalized particles. This method was developed for manual application using commercial SPE cartridges as well as for automated SPE-HPLC online coupling. While ZEN is covalently coupled to the solid phase by means of a hydrazone bond, undesired matrix components can be removed very efficiently. Finally, ZEN is decoupled from the solid phase, leading to highly purified extracts which are measured by HPLC-FLD. The development of the first European Reference Material (ERM®) for ZEN in maize germ oil (ERM®-BC715) will be presented and discussed. This ERM®-project underpins the urgent need for mycotoxin-CRMs to support food safety and public health. [1] European Commission (EC) Mandate M/520 (2013) for standardisation addressed to CEN for methods of analysis for mycotoxins in food. [2] Commission Regulation (EC) No 1126/2007 amending Regulation (EC) No 1881/2006 setting maximum levels for certain contaminants in foodstuffs as regards Fusarium toxins in maize and maize products. T2 - Anakon CY - Tübingen, Germany DA - 03.04.2017 KW - Mycotoxins KW - Food safety KW - Analytical method KW - Reference material PY - 2017 AN - OPUS4-39860 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Herstellung eines Haferflocken-Referenzmaterials für die Mykotoxine T-2 und HT-2 T2 - Tag der Chemie 2010 (Freie Universität Berlin) CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21226 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Siegel, David T1 - Current mycotoxin research at BAM T2 - Gordon Reaearch Seminar & Conference on Mycotoxins and Phycotoxins CY - Waterville, ME, USA DA - 2011-06-11 PY - 2011 AN - OPUS4-23781 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radunz, Sebastian T1 - Simple approach to pKa tunable BOIDPY-based fluorescent pH sensors N2 - Successfull synthesis of pH-responsive fluorescence ON/OFF sensor dyes with tunable pK values covering the pH range of 5 to 12 Immobilizing of multiple dyes with different pK values into a polymer host matrix provides a pH sensor with a dynamic range. T2 - First European/ 10th German BioSensor Symposium CY - Potsdam, Germany DA - 20.03.2017 KW - Fluorescence KW - Sensing KW - pH PY - 2017 AN - OPUS4-39683 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Orell, S. T1 - Differential toxicities of particulate matter components linked to air pollution and adverse health effects N2 - There are significant differences in toxicity of PM components and cellular responses that can be linked to adverse health effects. Soot and copper oxide induced toxicity, reduced metabolic activity, increased ROS and altered immune response. Increased ROS generation and mitochondrial dysfunctions are well known features in COPD pathology. Toxicity of individual airborne particles can be used to better understand adverse health effects and improve air quality guidelines. T2 - ERS International Congress 2021 CY - Online meeting DA - 05.09.2021 KW - Particulate matter KW - Toxicity KW - Airborne particles KW - Air pollution KW - Inflammation KW - Epithelial cell PY - 2021 DO - https://doi.org/10.1183/13993003.congress-2021.PA3195 N1 - The abstract of the poster presentation was published in: European Respiratory Journal 2021; 58: Suppl. 65, PA3195. AN - OPUS4-53134 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epping, Ruben T1 - Aroma Sensing of Truffles N2 - The aim of this project is to develop a mobile technical device to search for truffles. This way, truffles can be harvested faster, cheaper and more efficiently compared to the current method using dogs. For this purpose, suitable marker substances in the aroma of ripe truffles were identified using analytical-chemical methods. The collected data was used to create aroma profiles of different truffle species. The specificity of possible marker substances was confirmed with a truffle dog study. The hypothesis “If trained truffle dogs recognize the substances as supposed truffles in the context of an experiment, they can be regarded as specific” was made. The results show that the truffle aroma is mainly characterized and perceived by dogs by dimethyl sulfide and dimethyl disulfide. For the concentration measurement of these markers in the ambient air, we are currently building our own detector. The Challenge is to get a fast measurement with a very low limit of detection at the same time. The device will resemble a metal detector in terms of shape and handling and be particularly suitable for mobile use. The R&D cooperation project between the Federal Institute for Materials Research and Testing (BAM) and sglux GmbH thus enables truffles to be harvested professionally and systematically. This brings the technical advances that have revolutionized agriculture over the last hundred years to truffle cultivation for the first time. T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 11.11.2022 KW - Truffle KW - Volatile organic compounds KW - Gas chromatography KW - Canine olfactometry PY - 2022 AN - OPUS4-56301 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - New mycotoxin reference materials: Crucial tools for quality assurance and food safety T2 - The World Mycotoxin Forum - 8th Conference CY - Vienna (Austria) DA - 2014-11-10 PY - 2014 AN - OPUS4-31977 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maul, Ronald T1 - Development of an improved in vitro digestion model - influence on apparent zearalenone content in flour T2 - 34. Mycotoxin-Workshop CY - Braunschweig, Germany DA - 2012-05-14 PY - 2012 AN - OPUS4-26043 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rühle, Bastian A1 - Resch-Genger, Ute A1 - Kembuan, C A1 - Graf, C T1 - Gold-shell coated NaYF4:Er3+, Yb3+ nanoparticles for the enhancement of fluorescence emission N2 - In the present work, we aim to explore how far the UCNP emission intensity can be enhanced by the aid of plasmonic interactions using a gold shell. The distance between the UCNP core and the gold shell is varied by adding a silica spacer of different thicknesses. The synthetic conditions for obtaining UCNP@SiO2@Au core-shell nanoparticles with precisely tuneable silica shell thicknesses were investigated. A gold shell on the UCNP@SiO2 nanoparticles is expected to give rise to a noticeable enhancement of particle brightness and fluorescence, given that the thicknesses of the silica shell and the gold coating can be controlled and fine-tuned. First single particle studies revealing shortening of the Er3+ lifetimes suggest that plasmonic enhancement occurs. T2 - 2nd Conference and Spring School on Properties, Design and Applications of Upconversion Nanomaterials CY - Valencia, Spain DA - 02.04.2018 KW - Upconversion nanoparticles KW - Silica coating KW - Plasmonic enhancement PY - 2018 AN - OPUS4-44958 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Moser, Marko T1 - Quantification of PEG-Maleimide Ligands on NIR-emissive Nanoparticles for Bioanalytics T2 - Potsdam Days Bioanalysis 2015 CY - Potsdam, Brandenburg DA - 2015-11-04 PY - 2015 AN - OPUS4-34901 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tavernaro, Isabella A1 - Sander, P. A1 - Andresen, Elina A1 - Schedler, U. A1 - Resch-Genger, Ute T1 - Potentiometric and Optical Titration for Cost- Efficient Quantification of Surface Functional Groups on Silica Nanoparticles N2 - Surface chemistry of engineered nanomaterials (NMs) plays a critical role not only in determining their interactions with the environment but also in their stability, safety, and functionality across diverse applications ranging from catalysis to biomedicine. Accurate quantification of surface functional groups (FGs) is therefore essential for quality control, risk assessment, and performance optimization.[1] However, many existing analytical techniques are either cost-intensive, require specialized instrumentation, or lack scalability for routine use. In this study, we present a comparative evaluation of potentiometric and optical titration as two simple, cost-efficient, and automatable methods for quantifying surface functional groups on a variety of surface-modified silica nanoparticles (SiO₂ NPs). These NPs were chosen as they are among the most frequently utilized engineered NMs in the life and material sciences. Potentiometric titration, based on pH monitoring during acid-base neutralization, offers a direct and label-free approach to determine the total amount of FGs. Optical titration provides a complementary method with potential for high-throughput screening. To examine the accuracy and robustness of our stepwise-optimized workflows and the achievable relative standard deviations (RSDs), measurements were performed by multiple operators in two laboratories. Method validation was conducted through cross-comparison with traceable, chemo-selective quantitative nuclear magnetic resonance spectroscopy (qNMR) and thermogravimetric analysis (TGA). A comparison with optical assays highlights the importance of measuring both quantities for comprehensive characterization of surface-modified NMs.[2] A combined NM surface analysis using optical assays and pH titration will simplify quality control of NM production processes and stability studies, and can yield large datasets for NM grouping in sustainable and safe(r)-by-design studies. T2 - eMRS Fall Meeting 2025 CY - Warsaw, Poland DA - 15.09.2025 KW - Fluorescence KW - Advanced material KW - Synthesis KW - Characterization KW - Nano KW - Particle KW - Silica KW - Surface analysis KW - Validation KW - qNMR KW - Fluram assay KW - Functional group KW - Quantification KW - Potentiometry KW - Amino groups KW - Fluorescamine KW - Calibration KW - Method comparison PY - 2025 AN - OPUS4-64205 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drzymala, Sarah T1 - Development of a SPE-HPLC Online Coupling for the Determination of Zearalenone in Edible Oil T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27830 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Fluorescence microscopic and spetroscopic studies on functionalized polymer-supports labeled with amino sensitive fluorophores T2 - Focus on Microscopy (FoM) CY - Valencia, Spain DA - 2007-04-10 PY - 2007 AN - OPUS4-14864 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Novel mycotoxin reference materials: crucail tools for quality assurence T2 - Anakon 2015 CY - Graz (Österreich) DA - 2015-03-23 PY - 2015 AN - OPUS4-32855 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias A1 - Sebald, M. T1 - Novel Approach towards the Synthesis of Deuterium-labelled Alternariol- and Alternariol monomethylether-Standards for the HPLC-MS/MS-Analysis in Food & Feed N2 - Alternariol (AOH) and Alternariol monomethylether (AME) are two secondary metabolites of Alternaria fungi which can be found in various foodstuffs like tomatoes, nuts and grains. Due to their toxicity and potential mutagenic activity, the need for the development of high-throughput methods for the supervision of AOH- and AME-levels is of increasing interest. As the availability of both native and labelled AOH and AME analytical standards is very limited we herein wish to present a novel concise approach towards their synthesis employing a ruthenium-catalyzed ortho-arylation4 as the key step. T2 - 15th International Symposium on Biological and Environmental Reference Materials (BERM) CY - Berlin, Germany DA - 23.09.2018 KW - Mycotoxins KW - Stable-Isotope-Dilution-Analysis PY - 2018 AN - OPUS4-46489 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Güttler, Arne A1 - Richter, Maria A1 - Würth, Christian A1 - Resch-Genger, Ute T1 - New Reference Materials for the Quantification and Standardization of Fluorescence-based Measurements N2 - Luminescence techniques are amongst the most commonly used analytical methods in the life and material sciences due to their high sensitivity and non-destructive and multiparametric character. Photoluminescence signals are, however, affected by wavelength-, polarization-, and time-dependent instrument specific effect and the compound-specific photoluminescence quantum yield. The former hamper the comparability of fluorescence measurements, while the relative determination of the latter requires suitable quantum yield standards with well-known photoluminescence quantum yields (QY). For the simple correction of instrument specific effects in the wavelength region of 300 nm to 950 nm, the set of the five certified spectral fluorescence standards BAM-F001 – BAM-F005, has been extended to the NIR range by including two new fluorescence standards currently under certification. For the reliable and accurate determination of QY which is the key performance parameter for the comparison of different luminophores, we certified a set of 12 quantum yield standards, which absorb and emit in the wavelength range from 300 nm to 1000 nm. T2 - Methods and Applications in Fluorescence CY - Gothenburg, Sweden DA - 11.09.2022 KW - Luminescence KW - Photoluminescence KW - Fluorescence KW - Quantum yield KW - Certified reference material KW - Standard PY - 2022 AN - OPUS4-55914 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Fluorescence intensity and quantum yield reference materials for standardization of fluorescence-based measurements N2 - Luminescence techniques are amongst the most commonly used analytical methods in life and material sciences due to their high sensitivity, nondestructive character, and easy instrumentation suitable for miniaturization. Photoluminescence signals are, however, affected by wavelength-, polarization-, and time-dependent instrument-related effects. Thus, at the core of standardization approaches for all fluorescence-based techniques are evaluated fluorescence standards for the consideration of instrument-specific spectral and intensity distortions of measured signals and for instrument performance validation (IPV). Here, we summarize the research of BAM division 1.2 on development of liquid and solid fluorescence standards for various application-relevant fluorescence parameters and techniques. The portfolio of BAM fluorescence reference materials presently consists of: i) a Spectral Fluorescence Standard Kit, i.e., a set of liquid fluorescence standards with certified normalized corrected emission spectra, for the determination of a broad variety of fluorescence parameters ii) a ready-to-use, glass-based multi-emitter fluorescence standard for IPV and the determination of instrument-to-instrument variations iii) specially adapted calibration tools and validation concepts for microarray-based platforms used in molecular diagnostics and food safety control iv) quantum yield (Φf) standards for relative determination of the key performance parameter Φf of fluorescent materials, which can be also used for the evaluation of the performance of absolute, standard-free methods utilizing integrating sphere setups or spectrometer accessories. These materials, that will eventually cover the ultraviolet, visible, and near infrared spectral region, are currently under certification. This toolbox of method-adapted reference materials can perfectly complement existing fluorescence standards. These easy-to-use, reference materials can pave the way to traceable fluorescence measurements to a radiometric scale like the spectral radiance or spectral photon radiance for all users of fluorescence techniques in material sciences and analysis, as well as environmental monitoring and biotechnology. They are particularly useful for customers working in strongly regulated areas like medical diagnostics or pharmaceutical research, where certified standards in conjunction with validated standard operating procedures are mandatory. T2 - International Symposium on Biological and Environmental Reference Materials BERM-15 CY - Berlin, Germany DA - 23.09.2018 KW - Reference materials KW - Fluorescence standards PY - 2018 AN - OPUS4-47140 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grabolle, Markus T1 - Fluorescence quantum yield and stability of CdSe/ZnS quantum dots - Influence of the thickness of the ZnS-shell T2 - Method and Application of Fluerescence (MAF10) CY - Salzburg, Austria DA - 2007-09-09 PY - 2007 AN - OPUS4-16414 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Metrological infrastructure for emerging food contaminants by innovative analytical tools T2 - EURAMET EMPIR "Health" Conference CY - Rotterdam, The Netherlands DA - 2015-11-22 PY - 2015 AN - OPUS4-34980 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maul, Ronald T1 - Intense formation of "masked mycotoxins" during food processing T2 - 5th International Symposium on Recent Advances in Food Analysis (RAFA 2011) CY - Prague, Czech Republic DA - 2011-11-01 PY - 2011 AN - OPUS4-24527 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hatami, Soheil T1 - New Integrating sphere setup for the determination of the absolute photoluminescence quantum yield of near-infrared emissive fluorophores in the spectral region from 600 nm to 1600 nm T2 - Nano-Additive CY - Berlin, Germany DA - 2012-11-19 PY - 2012 AN - OPUS4-27072 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hatami, Soheil T1 - Exploring the structure and the influence of the ligand shell on the emission properties of water-soluble CdTe and CdHgTe quantum dots T2 - 30 years of colloidal quantum dots CY - Paris, France DA - 2014-05-26 PY - 2014 AN - OPUS4-30517 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hatami, Soheil T1 - New Tools for reliable photoluminescence quantum yield measurements in ther near-infrared spectral region from 600 nm to 1700 nm T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27805 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hatami, Soheil T1 - Emission Properties of Quantum Dots Affected by the Ligand Shell - Theory and Experiment T2 - 15th JCF-Frühjahrssymposium CY - Berlin, Germany DA - 2013-03-06 PY - 2013 AN - OPUS4-28469 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Würth, Christian T1 - New integrating sphere setup for the measurement of absolute fluorescence quantum yields as well as measurements of emission, transmission, and reflectance T2 - Colloquium Optische Spektroskopie COSP 2011 CY - Berlin, Germany DA - 2011-03-21 PY - 2011 AN - OPUS4-23537 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hatami, Soheil T1 - Absolute Photoluminescence Quantum Yield Determination of Near-infrared Emissive Quantum Dots T2 - Photochemistry CY - Potsdam, Germany DA - 2012-10-08 PY - 2012 AN - OPUS4-26990 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hatami, Soheil T1 - Photoluminescence Quantum Yield of Near-infrared Emissive Quantum Dots T2 - DPG conference CY - Berlin, Germany DA - 2012-03-25 PY - 2012 AN - OPUS4-26987 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kraft, Marco T1 - Particle size dependent optical properties of hexagonal β-NaYF4: 2 % Er3+, 20 % Yb3+ upconversion nanoparticles in cyclohexane and water N2 - Hexagonal NaYF4 doped with 20 % Yb3+ and 2 % Er3+ is an efficient upconversion (UC) phosphor for the conversion of 976 nm excitation light to emission at 845 nm, 800 nm, 655 nm, 540 nm and 410 nm light. The emission behavior of nanoparticles made from this material is strongly influenced by particle size, surface chemistry, and microenvironment. Furthermore their UC emission originates from multiphotonic absorption processes, rendering the resulting luminescence spectra and intensities excitation power density (P) dependent. Therefore the rational design of efficient nm-sized UC particles e.g., for applications in the material and life sciences requires reliable spectroscopic tools for the characterization of the optical properties of these materials like the excitation power density (P)-dependent UC quantum yield (QYUC) in dispersion, which presents a measure for the efficiency of the conversion of absorbed into emitted photons. Up to date the P-dependent absolute measurement of QYUC in aqueous media with an excitation wavelength of 976 nm presents a considerable challenge due to the low absorption coefficients of the UC materials and the absorption of water at this wavelength. T2 - International Conference on Advanced Materials and Nanotechnology CY - Queenstown, New Zealand DA - 12.02.2017 KW - Upconversion KW - Quantum yield KW - Lifetime KW - Water KW - Cyclohexane PY - 2017 AN - OPUS4-40093 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Characterization of highly fluorescence candidate glass references standards T2 - 12th Conference on Methods and Applicaions of Fluorescence: Spectroscopy, Imaging and Probes (MAF-12) CY - Strasbourg, France DA - 2011-09-11 PY - 2011 AN - OPUS4-24522 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herter, Sven-Oliver T1 - Semi-synthesis of isotopic labeled ergot alkaloids: New reference standards N2 - We developed a two-step semi-synthesis for the preparation of isotopically labeled EAs, starting from native EAs. This universal strategy enabled the successful synthesis of all isotopically labeled priority EAs. The structure of the isotopically labeled EAs was confirmed by HPLC-HR-MS/MS using native, unlabeled EAs as a reference standard. The next step will be the implementation of the isotopically labeled standards in the European standard procedure EN 17425 to improve the quantification of EAs in foodstuffs. T2 - 45th Mycotoxin Workshop CY - Vienna, Austria DA - 02.06.2024 KW - Reference Material KW - HPLC-MS/MS KW - Mycotoxins KW - Isotop standards KW - Organic Synthesis KW - Ergot alkaloids PY - 2024 AN - OPUS4-60239 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Güttler, Arne T1 - Certified Reference Materials for the Quantification and Standardization of Fluorescence-based Measurements N2 - The size and shape of photoluminescence signals is affected by wavelength-, polarization-, and time-dependent instrumentspecific contributions and the compound- and environment-specific photoluminescence quantum yield. The former hamper the comparability of fluorescence measurements performed on different measuring devices. The commonly relatively done determination of the performance parameter requires suitable quantum yield standards with well-known. The performance of such measurements is, e.g., described in the written standard IEC 62607 currently revised. T2 - Colloquium für Optische Spektrometrie 2025 CY - Jena, Germany DA - 24.09.2025 KW - Quality assurance KW - Fluorescence KW - Nano KW - Particle KW - Advanced material KW - Calibration KW - Characterization KW - Fluorescence quantum yield KW - Phosphor KW - Absolute KW - Integrating sphere spectroscopy KW - Dye KW - Standardization KW - Reference material KW - Interlaboratory comparison KW - Uncertainty PY - 2025 AN - OPUS4-64213 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - T-2 and HT-2 toxins in oat flakes: A new certified reference material T2 - 14th International Symposium on Biological and Environmental Reference Materials (BERM 14) CY - National Harbor, Maryland (USA) DA - 2015-10-11 PY - 2015 AN - OPUS4-34671 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Rita T1 - Ochratoxin A (OTA) in Lebensmitteln T2 - GDCh-Jahrestagung der FG "Umweltchemie und Ökotoxikologie" CY - Halle (Saale), Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-13513 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - New NIR fluorescence reference materials and quantum yield standards for standardization of fluorescence-based measurements N2 - Luminescence techniques are amongst the most commonly used analytical methods in the life and the material sciences due to their sensitivity and nondestructive character. All photoluminescence signals are, however, affected by wavelength-, polarization- and time-dependent instrument-related effects. Furthermore, substantial challenges to measure absolute luminescence intensities complicate the comparison of data recorded with different instruments and on the same instrument at different times. These problems can be easily resolved with fluorescence standards used for instrument performance validation (IPV) and determination of instrument-to-instrument variations, which allow to measure, quantify, and monitor the wavelength-dependent spectral responsivity for typically used instrument settings. For example, a set of liquid fluorescence standards, the BAM Kit F001-F005, and a ready-to-use glass-based fluorescence standard BAM F-012 developed and certified by BAM enable the characterization of many fluorescence parameters in the UV/vis wavelength range. For the increasingly used near infrared (NIR) region, standards and calibration tools are still very rare. Reliable spectral fluorescence standards and intensity or quantum yield standards are currently not available for the NIR, even though in biology, molecular imaging, and clinical diagnostics fluorescence labels absorbing and emitting in the long wavelength region beyond 650 nm are being increasingly used. This limitation hampers the reliability and comparability of fluorescence measurements in the NIR and calls for simple fluorescence standards for instrument characterization and for the quantification of fluorescence intensities and efficiencies to improve the comparability of the emission measurements in the NIR. This encouraged us to assess the potential of several NIR-emitting materials as spectral fluorescence standards, thereby extending the BAM Kit from the UV/vis into the NIR up to 950 nm. Moreover, we currently certify quantum yield standards for the UV/vis/NIR to improve the reliability of relative measurements of this spectroscopic key quantity particularly > 650 nm. These tools enable an instrument characterization, signal referencing, quality assurance, traceability, and method validation now also for wavelengths > 650 nm, thereby improving the reliability of fluorescence data in pharmaceutical research, medical and clinical diagnostics, material analysis, and environmental monitoring. T2 - 15th Conference on Methods and Applications in Fluorescence (MAF) CY - Brugge, Belgium DA - 10.09.2017 KW - Fluorescence reference materials KW - Quantum yield standard KW - Glass-based fluorescence standard PY - 2017 AN - OPUS4-41990 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Reference standards for the performance validation of fluorescence measurement systems T2 - 11th International Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Budapest, Hungary DA - 2009-09-06 PY - 2009 AN - OPUS4-20424 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Suitable Labels for Molecular Imaging - Influence of Dye Hydrophilicity on the Spectroscopic Properties of lgG Conjugates T2 - 23rd Lecture Conference on Photochemistry CY - Potsdam, Germany DA - 2012-10-08 PY - 2012 AN - OPUS4-26967 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias A1 - Gebauer, J. T1 - Total Synthesis of (+-)-Trichodiene T2 - 1st European Conference on Natural Products CY - Frankfurt am Main, Germany DA - 2013-09-22 PY - 2013 AN - OPUS4-29483 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oskoei, Parastu T1 - Thermoresponsive UCNP@MSN Nanoparticles for Doxorubicin Delivery in Melanoma Cells N2 - Upconversion nanoparticles (UCNPs) possess unique photophysical characteristics, such as excita bility by near infrared (NIR) light, which facilitates deep tissue penetration, multi color emission , long luminescence lifetimes, and an excellent photostability. These features have made UCNPs promising tools for biomedical applications . M esoporous silica nanoparticles (MSNs) functionalized with stimuli responsive nanovalves or specific coatings enable the encapsulation and controlled release of therapeutic agen ts, thereby offering spatiotemporal precision in drug delivery 1 3 ]]. Among drug delivery strategies, photoresponsive systems have attracted growing attention due to their potential for clinical applications . This is especially relevant for melanoma, an aggressive skin cancer with increasing global incidence, for which conventional therapeutic modalities remain largely insufficient in advanced stage 4 In this work, core shell UCNP@MSN nanoparticles were synthetised by coating UCNPs with a mesoporous silica layer, which was subsequently functionalized with thermoresponsive retro Diels Alder nanovalves [ and loaded with the chemotherapeutic agent doxorubicin (DOX). Controlled drug release was effectively achieved under 980 nm NIR i llumination . Treatment with functionalized nanoparticles significantly reduced the viability of melanoma cell lines, with an enhanced cytotoxicity being observed upon combined nanoparticle exposure and NIR illumination . Mechanistic analyses revealed that neither UCNPs nor NIR i llumination alone could induce the production of reactive oxygen species (ROS); however, their combination induced a marked increase in ROS levels in two of the three tested cell lines. Furthermore, this dual treatment promoted substantial apoptotic and/or necrotic responses across all cell models. These findings underscore the potential of UCNP@MSN nanoplatforms, equipped with thermoresponsive ga tes , as efficient photoactivated drug delivery systems for melanoma therapy. T2 - Conference Jornadas CICECO CY - Aveiro, Portugal DA - 09.10.2025 KW - Nano KW - Particle KW - Lanthanide KW - Upconversion KW - Surface chemistry KW - Mesoporous silica KW - Doxorubicin KW - Nanomedicine KW - Triggered release KW - pH KW - Cellular uptake KW - Toxicity KW - Folate KW - Ligand PY - 2025 AN - OPUS4-64371 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herter, Sven-Oliver T1 - New PFAS Reference Materials for Environment and Circular Economy N2 - Per- and polyfluorinated alkyl substances (PFAS) are a group of synthetic compounds that have been used in various industrial and consumer products for decades. Their wide range of applications is due to water- and oil-repellent properties, as well as their chemical and thermal stability. However, the use of PFAS has raised concerns due to their persistence in environment and their adverse health effects, leading to regulations aimed at controlling their use and minimizing exposure. Substances such as PFOS, PFHxS, and PFOA are listed in the Stockholm Convention on Persistent Organic Pollutants (POP Regulation, EU 2019/1021). Maximum values have been set for PFAS in environmental matrices such as soil and water, but also for textiles as a relevant area of circular economy and part of the current German standardization roadmap “Circular Economy”. Reliable PFAS analysis requires an increasing global demand for certified reference materials (CRM). However, CRMs for PFAS in soils and textiles are rare or currently not available. To improve the metrological infrastructure and support PFAS measurements, two CRMs for PFAS in soil (BAM-U027) and PFAS in textiles (BAM-B003) based on ISO 17034 and ISO 33405 were developed. This poster provides an overview of the different steps for preparation and characterization of the two candidate materials. The assignment of the certified mass fractions for relevant PFAS targets (18 PFAS targets for BAM-B003) is based isotope dilution HPLC-MS/MS at three independent workplaces. The results of the BAM in-house study on BAM-U027 were supported by an interlaboratory comparison study. T2 - 16th International Symposium on Biological and Environmental Reference Materials CY - Halifax, Nova Scotia, Canada DA - 01.06.2025 KW - Certified Reference Material KW - PFAS KW - Circular Economy KW - Textiles KW - Quality assurance PY - 2025 AN - OPUS4-63404 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Natürliche Umwelt- und Lebensmitteltoxine - Herstellung eines Referenzmaterials für die Mykotoxine T-2 und HT-2 - T2 - Tagung Umwelt 2010 CY - Dessau-Roßlau, Germany DA - 2010-09-07 PY - 2010 AN - OPUS4-21955 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leubner, S. T1 - Comprehensive Analytical Study of the Surface Chemistry of Semiconductor Nanocrystals T2 - Nanofair symposium CY - Dresden, Germany DA - 2012-06-12 PY - 2012 AN - OPUS4-26984 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Measurements of Photoluminescence Quantum Yields of Scattering LED Converter Materials N2 - How to Get it Right with the Absolute Measurement of Photoluminescence Quantum Yields of Scattering LED Converter Materials Saskia Fiedler+,a, Florian Frenzel+,a, Christian Würth a, Isabella Tavernaro a, Michelle Grüne c, Stefan Schweizer c,d, Axel Engel e, and Ute Resch-Genger a* a Division Biophotonics, Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany; email: ute.resch@bam.de b Present address: Photonic Materials, NWO-Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands c Faculty of Electrical Engineering, South Westphalia University of Applied Sciences, Lübecker Ring 2, 59494, Soest, Germany d Fraunhofer Application Center for Inorganic Phosphors, Branch Lab of Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Lübecker Ring 2, 59494, Soest, Germany e Schott AG Technical Services, Hattenbergstrasse 10, D-55122 Mainz, Germany Optical measurements of scattering materials such as luminescent nano- and microparticles and phosphors dispersed in liquid and solid matrices play an important role in energy conversion, solid-state lighting, medical diagnostics, and security barcoding. A key performance parameter is the photoluminescence quantum yield QY, i.e., the number of emitted per number of absorbed photons. QY of transparent luminophore solutions can be obtained relative to a fluorescence QY standard of known QY, meanwhile available as certified reference materials.[1] The determination of QY of scattering liquid and solid samples like nanoparticle dispersions, phosphors, and optoceramics requires, however, absolute measurements with an integrating sphere setup. Despite the need for reliable absolute QY measurements, no interlaboratory comparison (ILCs) on measurement uncertainties has been performed and scattering standards with known QY are not available. We present the results of an ILC of 3 labs from academia and industry on measurements of transparent and scattering dye solutions and solid phosphors and converter materials like YAG:Ce optoceramics with commercial stand-alone integrating sphere setups of different illumination and detection geometries. Special emphasis was dedicated to the influence of measurement geometry, optical properties of the blank for determining the number of incident photons absorbed by the sample, and sample-specific surface roughness. Matching QY values could be obtained for transparent dye solutions and scattering dispersions with a blank with scattering properties closely matching those of the sample, QY measurements of optoceramic samples with different blanks revealed substantial differences of more than 20 %. Based on our data, we recommend non-absorbing blank materials with a high reflectivity (>95 %) such as a 2 mm-thick PTFE target placed on the sample holder as blanks. T2 - eMRS CY - Strasbourg, France DA - 26.05.2025 KW - Quality assurance KW - Fluorescence KW - Nano KW - Particle KW - Quantum yield KW - NIR KW - Characterization KW - Electron microscopy KW - Film KW - Integrating sphere spectroscopy KW - Calibration KW - Lifetime KW - Advanced materials KW - LED converter KW - YAG:Ce KW - ILC KW - Measurement uncertainty KW - Absolute quantum yield PY - 2025 AN - OPUS4-63327 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Makowski, Maike T1 - Non-invasive Cereal Analysis by GC-MS detection of Trichodiene as a Volatile Mycotoxin Biomarker N2 - Due to the increasing consumption of cereals worldwide, the monitoring of growth, storage and processing is becoming more and more crucial. Particularly when stored, infested grains breed fungal clusters (“hot spots”) in which mycotoxins greatly exceed allowed maximum levels. Because of their unpredictable presence, current sample drawing and procedures for mycotoxin analysis represent a complex challenge for operators, involving invasive and cost intensive steps. Therefore, new time- and labour-saving mycotoxin control methods including sampling and analysis steps are needed. A possible approach is the non-invasive analysis of the homogeneous gas phase above the crops, instead of analyzing random samples. However, this procedure requires microbial volatile organic compounds (MVOC´s) being released by the samples and representing the present mycotoxins. Previous investigations revealed trichodiene to be a precursor in trichothecenes biosynthesis – one of the largest mycotoxin groups with over 180 compounds. Due to its non-functionalized sesquiterpene structure, trichodiene has already been quantified using Headspace GC-MS methods (for instance]). Thereby, it can possibly be used as a biomarker for trichothecene contamination in foodstuff. However, further investigations are necessary. The correlation between trichodiene concentration in the gas phase and trichothecenes mass fraction in the sample must be examined closely to draw conclusions about the exact trichothecene content within samples. Realizing this idea, would widely extend the applicability of trichodiene and enormously simplify trichothecene quantification. Hence, this first step of an ongoing study aims to develop a laboratory reference method using trichodiene as volatile biomarker to quantify trichothecenes in cereals. Static headspace and SPME-enrichment coupled to gas chromatography with mass spectrometry (GC-MS) were employed. In a second step, this reference method is intended to validate new approaches for fast on-site screening of trichodiene in cereals. T2 - 10th World Mycotoxin Forum Conference CY - Amsterdam, The Netherlands DA - 11.03.2018 KW - Trichodiene KW - GC-MS KW - Mycotoxin Biomarker PY - 2018 AN - OPUS4-44508 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tavernaro, Isabella T1 - Development of multimodal methods to quantify the total and accessible number of functional groups and ligands on nanomaterials N2 - Engineered and tailored nanomaterials (NM) are of great interest in the life and material sciences, as they can be used, e.g., as drug carriers, barcodes, fluorescent sensors, and multimodal labels in bioanalytical assays and imaging applications. Their performance and safety depend not only on their particle size, size distribution, and morphology, but also on their surface chemistry, i.e., the total number of surface functional groups (FG) and the number of FG accessible for subsequent functionalization with ligands or biomolecules, which in turn determines surface charge, colloidal stability, biocompatibility, and toxicity. It also underlines the importance of validated analytical methods that provide accurate information on these application-relevant physicochemical properties with a known uncertainty. In the case of FG quantification, this calls for robust, fast, inexpensive, and reliable methods which allow for the characterization of a broad variety of NM differing in size, chemical composition, and optical properties. Methods Aiming at the development of simple, versatile, and multimodal tools for the quantification of bioanalytically relevant FG such as amine, carboxy, thiol, and aldehyde functionalities, we investigated and compared various analytical methods commonly used for FG quantification. This includes electrochemical titration methods, dye-based optical assays, and other instrumental analytical techniques such as nuclear magnetic resonance (NMR), mass spectrometry (MS), and thermal analysis methods. Results Here, we will present examples for different types of NMs and FGs including results from a currently running interlaboratory comparison (ILC) with the National Research Council of Canada (NRC) to pave the road for method standardization. Innovative aspects • Surface analysis • Performance and safety of nanomaterials • Standardization T2 - ANAKON 2023 CY - Vienna, Austria DA - 11.04.2023 KW - Engineered Nanomaterials KW - Surface group analysis KW - Optical spectroscopy KW - Quantitative NMR KW - Ligands KW - Dye KW - Particle synthesis KW - Optical Assays KW - Titration KW - Safe-by-Design KW - Nano KW - Nanosafety KW - Silica- and Polystyrene Particles PY - 2023 AN - OPUS4-59127 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radunz, Sebastian T1 - Investigation of upconverting nanoparticle growth utilizing in-situ luminescence monitoring in combination with offline small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM) N2 - - UCNPs were succesfully synthesized and characterized - Various stages of UCNP growth were tracked using different analytical methods including real time in-situ & time-resolved luminescence spectroscopy, SAXS and TEM measurements - Additional size determination will be performed using inductively coupled plasma - mass spectrometry (ICP-MS) T2 - BAM-PTB-Nanoworkshop CY - PTB, Berlin, Germany DA - 14.05.2018 KW - Rare earth nanoparticles KW - Upconversion KW - TEM KW - SAXS PY - 2018 AN - OPUS4-45884 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herter, Sven-Oliver T1 - Synthesis and application of isotopic labelled ergot alkaloids N2 - Ergot alkaloids form a toxicologically relevant group of mould toxins (mycotoxins) that are among the most common contaminants of foodstuff and animal feed worldwide. Reliable controls are essential to minimise health risks and economic damage. Due to their toxicological relevance, EU limit values for 12 priority ergot alkaloids have been introduced for the first time in 2022 and range from 500 μg/kg in rye milling products down to 20 ug/kg Processed cereal-based foods for infants and young children[1]. High-performance liquid chromatography - mass spectrometry is used to quantify low concentrations of ergots in food, however the European standard analytical procedure cannot be applied due to the lack of isotopically labelled reference standards. The complex structure of the ergot alkaloids makes a total synthesis extremely challenging, expensive and time-consuming. Therefore, we are focusing on different semi-preparative methods (electrochemistry, organic synthesis, heterogeneous catalysis) to specifically N-demethylate the C8 carbon atom of the lysergic acid moiety. The norergot alkaloid formed is then isotopically labelled using an electrophilic methyl source, i.e. iodomethane or dimethyl sulphate to obtain the specific isotopic labelled ergot alkaloid. Initial experiments have shown that N-demethylation of the ergot alkaloid ergotamine is possible by both electrochemical and wet-chemical organic synthesis. The next step is to improve the previously determined reaction conditions to enable the synthesis of norergotamine on a mg scale for further reactions. T2 - ISEAC-41 CY - Amsterdam, Netherlands DA - 20.11.2023 KW - Reference Material KW - Isotope KW - Standards KW - Mykotoxine KW - HPLC-MS PY - 2023 AN - OPUS4-59315 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - NIR-Fluorescent Nano- and Micrometer-sized Particles for Biomedical and Diagnostical Applications T2 - Faraday Discussion, University of Edinburgh CY - Edinburgh, Scotland DA - 2010-09-06 PY - 2010 AN - OPUS4-22073 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oskoei, Párástu T1 - Cell mechanisms induced by doxorubicin-loaded UCNP@MSN nanoparticles with a thermosresponsive nanovalve in melanoma cells N2 - Upconversion nanoparticles (UCNPs) exhibit several remarkable optical properties, including excitation by near infrared (NIR) light, which enables deep tissue penetration, multiple distinct emission bands across a wide range of wavelengths, long luminescen ce lifetimes, and high photostability. These features make them particularly attractive for various biomedical applications. Mesoporous silica nanoparticles (MSNs), functionalized with nanovalves or specific coatings, have been explored for controlled and targeted drug delivery, where therapeutic agents are encapsulated within the nanopores, allowing spatiotemporal release 1 3 ]]. Among the promising approaches, photoactivated drug delivery systems have drawn considerable interest due to their versatility and potential. One relevant application is in the treatment of melanoma, an aggressive form of skin cancer with a rising global incidence. In advanced stages, conventional therapies often fail to achieve complete tumour eradication, resulting in poor prognose s 4 In this study, UCNPs were coated with a mesoporous silica shell to form core shell UCNP@MSN nanoparticles, which were further functionalized with thermoresponsive retro Diels Alder nanovalves and loaded with doxorubicin (DOX), a chemotherapeutic drug used in melanoma treatment. Upon exposure to 980 nm NIR light, DOX release was successfully triggered in the culture medium. Exposure to functionalized UCNPs decreased the viability of the tested melanoma cell lines, with further reductions observed when the ex posure to the nanoparticles was combined with irradiation. Subsequently, t he toxicity mechanisms were evaluated and showed that w hile individual treatments with either the functionalized UCNPs or NIR irradiation alone had no effect on reactive oxygen species (ROS) production, their combination significantly increased ROS levels in two of the three tested cell lines. This combined treatment also led to notable increases in apoptotic , necrotic or both type of cells’ percentages on all cell lines. Overall, these findings highlight the potential of these nanoparticles with thermoresponsive gating mechanisms as effective platforms for targeted drug delivery in melanoma therapy. T2 - EUROTOX 2025 CY - Athens, Greece DA - 14.09.2025 KW - Nano KW - Particle KW - Lanthanide KW - Upconversion KW - Surface chemistry KW - Mesoporous silica KW - Doxorubicin KW - Nanomedicine KW - Triggered release KW - pH KW - Cellular uptake KW - Toxicity KW - Folate KW - Ligand PY - 2025 AN - OPUS4-64372 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - Rational Design and Absolute Quantum yields of NIR-Fluorescent Nanoparticls for Bioanalytical Applications T2 - Innovationsforum "Funktionelle Farbstoffe" CY - Bitterfeld-Wolfen, Germany DA - 2012-05-31 PY - 2012 AN - OPUS4-26021 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wang, X. T1 - Gold nanoparticle-catalyzed uranine reduction N2 - Gold nanoparticles (AuNPs) can catalyze the decolorization of organic dyes in the presence of sodium borohydride (NaBH4), which can be utilized for sensitive optical signaling. Here, we monitor the catalytic reduction of a fluorescent substrate, exemplarily chosen uranine, by AuNPs serving as nanocatalysts by absorption and fluorescence spectroscopy. Dye reduction is accompanied by dramatic changes in the absorption and fluorescence properties of uranine. As proposed reaction mechanism, we assume electron transfer between uranine and NaBH4 through the AuNPs nanocatalysts which is currently investigated also by time-resolved fluorescence and detailed spectroscopic studies of the influence of pH, NaBH4, and AuNPs on these effects. As ultimate goal, a model reporter platform with colorimetric andfluorometric signaling is anticipated for the detection of different analytes by coating AuNPs with affinity ligands such as antibodies and aptamers and and special separation methods. T2 - Anakon 2015 CY - Graz, Austria DA - 23.03.2015 KW - Fluorescence lifetime KW - Uranine KW - Nanoparticle KW - Surfactant PY - 2015 AN - OPUS4-38957 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Moser, Marko T1 - Spectroscopic Quantification of Thiol Groups and Ligands on Nanomaterials N2 - Thiols have a high binding affinity to noble metals and semiconductor (SC) materials. Thiol ligands enable size control and tuning of the surface during the synthesis of nanoparticles (NP), significantly influence their physico-chemical and optical properties, and allow for their bioconjugation via further functional groups. Thus, simple, inexpensive, robust, and fast methods for the quantification of thiol groups and the characterization of thiol-modified or - stabilized nanomaterials including polymers are of considerable importance. T2 - Innovation Forum Senftenberg 2016 CY - Senftenberg, Germany DA - 01.06.2016 KW - Ellman KW - Aldrithiol KW - Thiols PY - 2016 AN - OPUS4-37245 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Mineralölkohlenwasserstoffe (MKW) im Umweltbereich - Methodenentwicklung und Referenzmaterialien T2 - GDCh Jahrestagung der Fachgruppe Umweltchemie und Ökotoxikologie CY - Halle (Saale), Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-12363 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gerstung, Vanessa T1 - Schwefeldioxid in Lebensmitteln T2 - Conference über Ionenanalyse (CIA 2007) CY - Berlin, Germany DA - 2007-03-12 PY - 2007 AN - OPUS4-14581 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brodehl, Antje T1 - Biosynthese, Isolierung und Charakterisierung von Zearalenon-Konjugaten T2 - 42. Deutscher Lebensmittelchemikertag CY - Braunschweig, Germany DA - 2013-09-16 PY - 2013 AN - OPUS4-29290 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - New Fusarium mycotoxin CRMs - perfect tools for reliable food analysis T2 - 32. Mycotoxin Workshop CY - Copenhagen, Denmark DA - 2010-06-14 PY - 2010 AN - OPUS4-21118 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Russo, Francesco Friedrich T1 - Low energy-electron ionisation mass spectrometry in non-targeted analysis N2 - The high throughput and sensitivity of mass spectrometry has resulted in a broad application in non-targeted screenings (NTS). Gas chromatography electron ionisation mass spectrometry (GC-EI-MS) methods show high reproducibility of fragmentation patterns, good separation, and vast spectral libraries. A significant disadvantage of standard 70 eV EI is the high degree of fragmentation with a possible loss of the molecular ion signal. The loss of molecular ion signal results in an increased difficulty in identifying compounds absent from spectral libraries as it precludes a straightforward molecular formula assignment. The high degree of fragmentation, and the resulting depletion of high m/z signals, also results in a reduced discriminatory power. The disadvantages of EI-MS are approached by soft ionisation techniques and, more recently, low energy (LE) EI-MS. LE-EI is a softer version of EI, which keeps high similarity with the standard 70 eV EI spectra and the good chromatographic properties of GC, while reducing the depletion of higher m/z ion signals. LE-EI-MS has been applied doping analytics[1], metabolomics[2], and fingerprinting of foods[3]. Our objective is the comparison of LE-EI-MS to alternative soft ionisation methods, e.g. APCI-MS, and the development of a NTS workflow for LE-EI-MS, including a highly automated data processing and annotation pipeline. In a first phase 13 compound libraries (705 compounds) will be measured at 14, 18, and 70 eV. Molecular ion abundance and similarity to standard 70 eV spectra are going to be evaluated. Furthermore, common neutral losses and fragments will be identified and included into an annotation tool. If the tool shows satisfying performance, it will be published (either as a standalone package or as an expansion to the InterpretMSSpectrum[4, 5] R package). T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Mass Spectrometry (MS) KW - Low Energy Electron Ionisation Mass Spectrometry (LE-EI-MS) KW - Non-tagreted analysis PY - 2025 AN - OPUS4-62781 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Reference Standard for the performance validation of fluroescence measuring systems T2 - Life Science Day 2011 CY - Berlin, Germany DA - 2011-08-26 PY - 2011 AN - OPUS4-24520 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scholtz, Lena T1 - Luminescence Encoding of Polymer Microbeads during Polymerization N2 - Differently sized, luminescent polymer beads encoded with QDs were prepared with a simple, optimized procedure. The optical properties of the resulting particles were studied to ensure sufficient fluorescence and to evaluate the influence of the polymerization on QD fluorescence. T2 - 84th Prague Meeting on Macromolecules - Frontiers of Polymer Colloids CY - Prague, Czech Republic DA - 24.07.2022 KW - Polymerization KW - Fluorescence KW - Quantum dots KW - Microbeads PY - 2022 AN - OPUS4-55447 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - On the Spectral Sensitivity Calibration of Fluorescence Spectrometers: Extensions to the NIR, Polarization and Grating Effects T2 - 12th Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes (MAF-12) CY - Strasbourg, France DA - 2011-09-11 PY - 2011 AN - OPUS4-24521 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matiushkina, Anna T1 - Quantification of Hydrophilic Surface Ligands on Nanoparticles N2 - The rapid development of nanotechnology is driven by a wide range of possible applications of nanoparticles (NPs) depending on their functions and composition, for example, in biomedicine, energy harvesting, and optoelectronics. Due to the large surface-to-volume ratio of nanoparticles, their properties and function are often highly dependent on surface chemistry, which also determines their stability and interaction with the environment. To ensure the successful advancement of nanomaterials in biomedical applications as well as in material sciences, it is hence crucial to develop reliable methods to control and quantify ligand molecules and functional groups on the NP surface for different NP processing steps including ligand exchange and the subsequent functionalization with, e.g., antifouling agents and recognition moieties. These methods must then be validated and eventually standardized. This also calls for suitable reference materials with known surface chemistries or functionalities. Methods for determining and quantifying surface functional groups and NP capping ligands include quantitative nuclear magnetic resonance (qNMR) techniques, thermogravimetric analysis (TGA), mass spectrometric (MS) methods, high-performance liquid chromatography (HPLC), and optical assays with photometric and/or fluorometric readout.[1] In the focus of this study on ligand exchange and quantification are differently sized iron oxide nanoparticles (IONPs), already used in biomedicine with applications as magnetic resonance imaging (MRI) contrast agents or for magnetic hyperthermia. IONPs can be prepared by a high temperature synthesis in nonpolar solvents, resulting in a superior monodispersity and crystallinity compared to particles prepared by aqueous synthesis methods. Such IONPs bear, however, hydrophobic surface ligands, that need to be exchanged for hydrophilic molecules to ensure water dispersibility required for biomedical applications. For these applications, a complete removal of potentially toxic surface ligands remaining from IONP synthesis is crucial. Here, we will present the synthesis of differently sized spherical IONPs capped with hydrophobic oleic acid molecules and an in-depth study of the ligand exchange to hydrophilic molecules such as citrate. We assessed the size, size distribution, and colloidal stability of the IONPs utilizing transmission electron microscopy (TEM), dynamic light scattering (DLS), and Zeta potential measurements before and after ligand exchange. In addition, several approaches to ligand quantification have been explored involving a variety of analytical tools. Our ultimate goal is here to identify the optimal methods for ligand analysis and to develop schemes for method validation, via the comparison of analytical techniques relying on different principles of signal generation (method cross-validation). T2 - E-MRS 2024 SPRING MEETING CY - Strasbourg, France DA - 27.05.2024 KW - Nano KW - Particle KW - Iron oxide KW - Ligand KW - Quantification KW - Advanced material KW - Surface analysis KW - Functional group PY - 2024 AN - OPUS4-62296 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lörchner, Dominique T1 - Photodegradation of an “emerging” heterocyclic brominated flame retardant N2 - The occurrence and fate of brominated flame retardants (BFRs) in the environment are topics of increasing concern. In recent years, numerous studies about their global transport, UV degradation, bioaccumulation and toxicity were performed to assess their environmental fate. Thus, most of the first generation BFRs are banned or restricted, and replaced by new ones. However, based on similar properties these new compounds may also pose a serious risk by causing adverse effects to human health and the environment. According to the European Food Safety Authority (EFSA) the class of the “emerging” BFRs are defined as compounds that have been identified in any environmental compartments, but the potential for degradation or bioaccumulation of these emerging BFRs is partially unknown. A representative of this class of compounds is the heterocyclic hexabrominated TDBP-TAZTO which was first detected in mollusks from Chinese bohai sea and in environmental matrices near a manufacturing plant in southern china. Furthermore, Wang et al. describe that the growth of the alga Nannochloropsis sp. is inhibited by TDBP-TAZTO in a concentration dependent manner but the photo-chemical behavior as well as the formation of possible photo-transformation products (PTPs) are still unknown. In order to clarify this complex issue photo-degradation experiments were by determining the rate constants and degradation half-life times of TDBP-TAZTO in different solvent compositions. In this study, the photodegradation of TDBP-TAZTO was performed for the first time to identify its photolysis products and to get a first understanding about the main degradation pathway in environmental matrices. T2 - Tag der Chemie CY - Berlin, Germany DA - 05.07.2017 KW - TDBP-TAZTO KW - Phototransformation products KW - UV-C PY - 2017 AN - OPUS4-42984 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Retter, Utz T1 - On the development of surfactant reference materials in BAM T2 - BERM 10, Tenth International Symposium on Biological and Environmental Reference Materials CY - Charleston, SC, USA DA - 2006-04-30 PY - 2006 AN - OPUS4-12369 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kage, Daniel T1 - Lifetime-encoded microparticles for application in flow cytometry N2 - The steadily increasing number of analytes, especially in bioanalytics and environmental contexts, requires the development of efficient and versatile methods for the simultaneous determination of different parameters within a single run. Additionally, these methods should be applicable in conjunction with established platform technologies like flow cytometry. Fluorescence techniques have proven to fulfill these requirements. Commonly performed spectral multiplexing utilizing a color code suffers from several problems, such as the sensitivity of fluorescence intensity measurements to fluctuations in excitation light intensity and dye concentration and hence, photobleaching and spectral crosstalk limiting the achievable number of detection channels. Moreover, it typically requires different costly excitation light sources. T2 - Innovation Forum Senftenberg 2016 CY - Senftenberg, Germany DA - 01.06.2016 KW - flow cytometry KW - lifetime encoding KW - life sciences KW - fluorescence KW - polymer particles PY - 2016 AN - OPUS4-37154 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grandke, Julia T1 - Development of different immunoassay formats and measurement uncertainty T2 - 4. Interdisziplinaäres Doktorandenseminar CY - Attendorn, Germany DA - 2010-02-21 PY - 2010 AN - OPUS4-21031 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drzymala, Sarah T1 - Highly Efficient Extraction and Clean-up of Zearalenone from Edible Oil T2 - 34. Mykotoxin-Workshop der Gesellschaft für Mykotoxinforschung e. V. CY - Braunschweig, Germany DA - 2012-05-14 PY - 2012 AN - OPUS4-25990 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Absorption and Fluorescence Properties of Dyes Incorporated in Pores of AlPO4-5 T2 - 14. Deutsche Zeolith-Tagung CY - Frankfurt am Main, Germany DA - 2002-03-06 PY - 2002 AN - OPUS4-3261 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Novel reference materials for mycotoxin analysis T2 - Konferenz zum 50. Jahrestag des JRC's IRMM CY - Geel, Belgium DA - 2010-11-23 PY - 2010 AN - OPUS4-21784 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Rita T1 - Reference materials for Ochratoxin A in coffee T2 - 29. Mycotoxin-Workshop CY - Fellbach, Germany DA - 2007-05-14 PY - 2007 AN - OPUS4-14655 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Oskoei, Párástu T1 - Effects of upconversion nanoparticles with a thermo-responsive nanovalve loaded with doxorubicin in melanoma cells N2 - Melanoma skin cancer has an increasingly higher incidence , and w hen detected in advanced stages, tumour eradication is often incomplete, contributing to poor prognosis with conventional treatments. Upconversion nanoparticles (UCNPs) have unique properties, such as excitability under near infrared (NIR) excitation light, which confers a relatively high penetration depth in tissue that allow their effective use in several biomedical applications Mesoporous silica nanoparticles (MSN) with nanovalves or derived coatings have widely been used for triggered and targeted drug delivery in the past. Anticancer drugs can be loaded into the pores of MSN, enabling controlled drug release. In this work, UCNPs were coated with a mesoporous silica shell yielding UCNP@MSN core shell nanoparticles which were equipped with thermoresponsive retro Diels Alder nanovalves and then loaded with DOX , a chemotherapeutic agent for melanoma treatmen t (UCNP@MSN DOX) Subsequent DOX release from this drug delivery system was triggered by 980 nm NIR light. Melanoma cells exposed to UCNP@MSN DOX or the NIR laser exhibited no change in ROS production , while the combination of both induced an increase in ROS production. This combination of conditions also induced changes on apoptosis and necrosis levels. These findings underscore the potential use of UCNP @MSN drug delivery systems with thermoresponsive caps as effective drug delivery platforms for melanoma therapy. T2 - VII iBiMED Symposium CY - Aveiro, Portugal DA - 23.05.2025 KW - Nano KW - Particle KW - Lanthanide KW - Upconversion KW - Surface chemistry KW - Mesoporous silica KW - Doxorubicin KW - Nanomedicine KW - Triggered release KW - pH KW - Cellular uptake KW - Toxicity KW - Folate KW - Ligand PY - 2025 AN - OPUS4-64373 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Zearalenone in maize germ oil - a new CRM for food safety T2 - 14th International Symposium on Biological and Environmental Reference Materials (BERM 14) CY - National Harbor, Maryland (USA) DA - 2015-10-11 PY - 2015 AN - OPUS4-34672 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - Targeted ratiometric Nanosensors for the in Vivo Imaging of Tumor Hypoxia in the NIR spectral region T2 - Tag der Chemie CY - Regensburg, Germany DA - 2012-06-28 PY - 2012 AN - OPUS4-26020 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drzymala, Sarah T1 - Optimized Extraction and Clean-up of Zearalenone from Edible Oils T2 - 4th Potsdam Colloquium on Bioanalysis CY - Potsdam, Germany DA - 2012-11-08 PY - 2012 AN - OPUS4-27406 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Fluorescence microscopic and spectroscopic monitoring of degradation processes upon polymer ageing N2 - The majority of all routinely used methods to assess polymer aging are based on destructive tests and methods. Early indicators for the deterioration of polymer materials are e.g., physical or mechanical properties like tensile strength, adhesion, brittleness, and color. It is well-known, however, that predominantly chemical changes are the underlying process of the physical changes that occur in organic materials upon aging over time. Typical initial steps during polymer degradation are crosslinking or chain breaking, alteration of autofluorescence, “yellowing” or bleaching caused by the formation of new functional groups. A straightforward strategy towards the sensitive detection and monitoring of chemical changes in the course of polymer aging is based on non-destructive optical measurements. Luminescence techniques, one of the most sensitive spectroscopic methods are the method of choice. Here, we present first results of luminescence-based monitoring of polymer degradation induced by different environmentally relevant weathering factors (e.g. humidity and UV exposure). Our studies include fluorescence spectroscopy as well as spectral scanning confocal fluorescence microscopy and clearly demonstrate the possibility to follow accelerate-aging processes by luminescence detection. T2 - Focus on Microscopy 2017 CY - Bordeaux, France DA - 09.04.2017 KW - Polymer aging KW - Confocal fluorescence microscopy KW - Fluorescence spectroscopy KW - Surface functionalities PY - 2017 AN - OPUS4-40274 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Temgoua Tonleu, Ranil C. A1 - Koch, Matthias T1 - Simulation of the Environmental Degradation of TBBPA by EC-LC-MS N2 - Oxidative degradation processes of tetrabromobisphenol A (TBBPA), a brominated flame retardant (BFR) in wood, plastics and electronics, were investigated by electrochemistry (EC) coupled online to electrospray ionization mass spectrometry (ESI/MS). Oxidative phase I and II metabolites production was achieved using an electrochemical flow-through cell equipped with a boron doped diamond electrode. Structural elucidation and prediction of oxidative metabolism pathways of TBBPA according to type II ipso-substitution were based on retention time, m/z ratio in negative mode and fragmentation pattern. Using the data obtained through high resolution MS analysis and the identification of single electron transfer (SET) as the initial step of a two-electron oxidation provided the necessary information to propose a mechanism for the electrochemical oxidation of TBBPA. Oxidation reactions involving aromatic hydroxylation and β-scission were the main degradation observed when studying the electrochemical behavior of TBBPA. Computational chemistry experiments using density functional theory (DFT) allowed to identify mono-hydroxylated reaction intermediate and dismissed the mechanism involving two concurrent hydroxylation. TBBPA oxidation products were compared to known metabolites of its biological and environmental degradation confirming the ability of electrochemistry to simulate β-scission reactions. T2 - Mass Spectrometry Forum 2024 CY - Vienna, Austria DA - 21.02.2024 KW - Emerging pollutants KW - Chemical characterization KW - Electrochemistry KW - Chemical and material safety KW - Mass spectrometry KW - Environment-material interactions PY - 2024 AN - OPUS4-59571 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matiushkina, Anna T1 - Quantification of Citrate Ligands on Nanoparticle Surfaces N2 - To ensure the successful advancement of nanomaterials (NM) in applications and their safe use, it is crucial to develop reliable methods to control and quantify ligands and functional groups (FG) on the nanoparticle (NP) surface as surface chemistry largely determines the interactions of NPs with their surroundings. Many analytical methods can be used for this purpose. However, their applicability strongly depends on the type of NM and ligand(s) and most of them require challenging protocols for sample preparation, i.e., the removal of the NPs or their dissolution, which can influence the accuracy of the measurements. While some methods allow the precise quantification of specific ligands such as quantitative nuclear magnetic resonance (qNMR), others provide only semi-quantitative results like Fourier Transform infrared spectroscopy (FTIR) or target more general analyte groups like thermogravimetric analysis (TGA) detecting mass losses (total organic content) or conductometry (e.g., (de)protonable FGs such as carboxyl or amine groups). [1] The calculation of the coverage of the NP surface with ligands, additionally requires knowledge of their total surface area, which can be obtained, e.g., from a precise characterization of NP size and concentration. Citrate is one of the most frequently utilized surface ligand for stabilizing metal, metal oxide, and lanthanide-based upconversion NPs in hydrophilic environments. However, its quantification on NP surfaces has rarely been addressed although it is a frequent analyte in medical or food analysis. In this study we compare several methods for quantifying citrate as capping ligands of iron oxide NPs (IONPs), exemplarily chosen because of their broad applications in the life science. [2] The size of the IONPs was characterized by electron microscopy (EM) and dynamic light scattering (DLS), while their concentration was determined by quantifying iron ions after acidic particle dissolution using a colorimetric assay and inductively coupled plasma optical emission spectroscopy (ICP-OES). The simplest approach for citrate quantification, direct photometric UV-detection after acidic digestion of the IONPs, yielded only reasonable results when combined with reversed phase high-performance liquid chromatography (HPLC). These results were cross validated with qNMR that required the development of a reliable sample preparation protocol addressing not only particle dissolution in deuterated solvents but also the removal of the paramagnetic iron ions interfering with NMR measurements. Comparison with results from TGA gives insight into the sensitivity and specificity of these methods and their potential for quantifying surface ligands on NPs. T2 - Anakon 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Advanced material KW - Functional group KW - Iron oxide KW - Ligand KW - Nano KW - Particle KW - Quantification KW - Surface analysis PY - 2025 AN - OPUS4-64861 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Andresen, Elina T1 - Functionalisation studies of UCNPs for pH-sensing N2 - Functionalisation of UCNPs with analyte-responsive dyes as resonance energy transfer (RET)acceptors, which is in the focus of our work, will yield chemoresponsive nanoprobes with unique features: they can be excited in the NIR range (which minimizes the photo-damage of biological samples, as well as the autofluoresence background) and one of their several sharp UC emission bands can be used as donor for RET sensing applications in combination with analyte-sensitive dyes which serve as indicators, whereas the other UC band(s) can act as internal reference. The first step upon preparation of such nanosensors is the functionalisation of the UCNPs with different surface chemistries for indicator conjugation. Desirable are systems with short distance between the UCNP(donor) and the indicator (acceptor) as a prerequisite for efficient RET. Additionally, dyes with a large spectral overlap between their absorption and one of the UC emission bands are required. Several classes of pH-responsive fluorescent dyes like xanthenes are eligible. Here, we present first studies to optimize the surface functionalization to achieve high RET efficiencies, which would improve the performance of such nanosensors for ratiometric fluorescence measurements of pH in biological matrices. T2 - 2nd Conference on Properties, Design and Applications of Upconversion Nanomaterials CY - Valencia, Spain DA - 04.04.2018 KW - PH-sensing KW - Upconverting nanoparticles KW - Rhodamine PY - 2018 AN - OPUS4-44823 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abilio, André T1 - Expert System for Screening Microbiologically Influenced Corrosion (MIC) as Internal Failure Cause in Oil and Gas Upstream Pipelines N2 - The analysis of pipeline failures due to Microbiologically Influenced Corrosion (MIC) is challenging due to the complex interaction of many influencing parameters including pipeline operation conditions, fluid chemistry and microbiology, as well as the analysis of corrosion features and products. To help address this challenge, an expert system was developed to assist non-specialists in screening internal pipeline corrosion failures due to MIC related threats. To accomplish this, 15 MIC subject matter experts (with a total of 355 man-years of accumulated MIC based experience) were recruited to evaluate a total of 65 MIC failure cases based on real-life scenarios. These case study parameters and the expert elicited results were input into an Artificial Neural Network (ANN) model to create a model system which can screen whether a given failure scenario is one of three outcomes: a) failure is likely due to MIC, b) failure is likely not due to MIC, or c) the conclusion is inconclusive (analysis needs more data/information). The model system had an overall accuracy of 74.8% and it showcases that knowledge from subject matter experts can be captured in a reasonably effective way to screen for possible MIC failures. Based on that, this presentation will provide details of the model development process and key results to date. Important considerations regarding the level of confidence of the diagnoses and variation between expert opinion will also be discussed alongside with ideas on how to improve the model for field applicability. T2 - ISMOS 9 CY - Edinburgh, United Kingdom DA - 27.06.2023 KW - Expert System KW - Microbiologically Influenced Corrosion (MIC) KW - Oil and Gas Upstream KW - Failure Investigation KW - Artificial neural networks (ANN) PY - 2023 AN - OPUS4-64603 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - The European Metrology Network for Pollution Monitoring – EMN POLMO N2 - The EU’s Green Deal acknowledges that « the EU needs to better monitoring, report, prevent and remedy pollution from air, water, soil and consumer products and to look more systematically at all policies and regulations ». In order to address these challenges, the Commission launched a new Strategy for Sustainability in October 2020, and adopted a Zero-pollution Action Plan for air, water and soil, in 2021. The comparability and trueness of measurements are often compromised by the lack of intact traceability chains and appropriate quality controls, for example attained by the use of matrix-matched certified reference materials, participation in interlaboratory comparisons and other validation schemes . Noticeable improvements are apprehended after practical demonstrations and scientific discussions on the importance of traceability to the SI with stakeholders and end-users . The European Metrology Network for Pollution Monitoring (EMN POLMO) was created in 2022 to provide metrology support to the environmental community and industry involved in the monitoring of variety of pollutants, including chemical pollutants, radionuclides, biological & microbiological, and nano and micro particles, in the three environmental compartments (air, water and soil). Recently, light pollution and noise pollution have been included in the scope of the network. One of the main goals of POLMO is to bridge the interests of the different stakeholder and end-user, and to contribute to environmental sustainability through the provision of tools and resources, required to perform accurate, comparable measurements. The POLMO Strategic Research Agenda identifies the key measurement challenges and opportunities in pollution monitoring and sets out a roadmap for future research and development. T2 - BIPM - 150 years of meter convention CY - Versailles, France DA - 20.05.2025 KW - POLMO KW - EMN PY - 2025 AN - OPUS4-64662 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Development, Validation and Application of an Accelerated Weathering Protocol for Assessing Bisphenol A Release from Polycarbonate Materials into the environment N2 - Bisphenol A (BPA) is under continuous regulatory scrutiny and listed as substance of very high concern (SVHC). Particular concern is related to its frequent detection in surface waters, despite being readily biodegradable. Several studies have been conducted to investigate sources and pathways of BPA in the environment, concluding that its main use as monomer in polycarbonate (PC) contributes only marginally to environmental BPA releases over its life cycle. To better understand the actual releases of BPA from PC under environmental conditions, a newly developed methodology (Federal Institute for Materials Research and Testing, BAM) was applied, which comprises a novel accelerated weathering protocol for polycarbonate (PC) materials, combined with an advanced analytical setup allowing for improved detection of BPA at trace level concentrations. The weathering protocol achieves a 13.6-fold acceleration compared to Central European outdoor conditions and simulates environmental stressors (global radiation, rain, temperature variations) in a laboratory weathering chamber, with simultaneous BPA release measurements using an organic isotope dilution calibration LC-MS/MS approach. Validation was performed in parallel outdoor exposure tests, by using haze and yellowness index measurements as reference parameters. PC sample types representative of major polycarbonate applications were examined: Samples with different levels of UV-protection as used in transparent sheets used outdoor in construction or housings in Electro- and Electronic applications as well as samples with a protective coating as used in automotive applications (headlamps, glazing and construction). Results demonstrated consistently low total BPA releases of around 0.3 mg m⁻² for samples with exposed PC surfaces, while releases from coated samples were significantly reduced by around two orders of magnitude. In all cases examined, the BPA release ceased to zero after a period of four to six weeks, equivalent to approximately 1 to 1.5 years of outdoor exposure. This suggests that potential BPA releases diminish to virtually zero after that timespan. While the newly developed test method is not suitable for routine laboratory implementation, it provides crucial quantitative data on BPA release from PC materials during accelerated environmental weathering. T2 - Umwelt 2025 CY - Dessau, Germany DA - 22.09.2025 KW - Bisphenol A KW - Polycarbonate KW - Weathering PY - 2025 AN - OPUS4-64665 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Piechotta, Christian T1 - Comparison of three different TOP Assay approaches for the determination of PFAS concentration in soil N2 - Within a project by the German Environmental Agency (Umweltbundesamt – UBA) soil samples are taken at different sites all over Germany. The concentration of 30 PFAS - 13 carboxylic acids (C4-C18), 5 sulfonic acids (C4-C10) and 12 precursor substances) - was determined in these soil samples using three different sample preparation approaches: 1) ultrasonic extraction of the soil samples with Methanol; 2) preparation of eluates to test the leaching behaviour of the PFAS and 3) TOP assays following the method published by Houtz & Sedlak. Targeted LC-MS/MS is used to determine PFAS concentration after all three preparation steps. For the TOP assay, the concentration of all 30 PFAS is compared prior to and after the oxidation reaction. Besides the ‘classic’ TOP assay, two other TOP assay approaches, the dTOP assay and the photoTOP assay, are tested and compared. First, all three TOP assay approaches will be tested on a reference soil spiked with a solution including all 30 PFAS measured in the project. Later, soil samples taken within the the priorly described project will were tested. This work is financed by the UBA via the ReFoPlan2021 project, FKZ372171. T2 - Euroanalysis 2025 CY - Barcelona, Spain DA - 31.08.2025 KW - PFAS KW - TOP-Assay KW - Soil PY - 2025 AN - OPUS4-64666 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - Werkstoffcharacterisierung mittels Röntgen-Refraktions- und Weitwinkel- Topographie T2 - Jubiläumssitzung 50 Jahre DGZfP-Arbeitskreis Berlin CY - Berlin, Germany DA - 2012-12-11 PY - 2012 AN - OPUS4-27474 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Laquai, René A1 - Müller, Bernd R. A1 - Kupsch, Andreas T1 - Characterizing damage evolution in metal matrix composites with X-ray refraction topography and in situ tensile loading N2 - In this study a metal-matrix-composite with aluminum matrix and Al2O3 particles was investigated with x-ray refraction topography and in-situ tensile loading. It could be observed that after reaching a certain load the specific surface increased steadily. However, the classical radiographs taken for comparison show no damage in the sample. T2 - 8th Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 07.12.2016 KW - X-ray refraction KW - Metal matrix composites KW - In-situ loading KW - Synchrotron PY - 2016 AN - OPUS4-39113 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bauer, L. J. T1 - Complementary X-ray techniques reveal hidden details in teeth N2 - Within the DFG project ‘IXdent’, first results have been achieved on 2D µXRF and X-ray refraction radiography measurements as well as combined 3D confocal µXRF and µXCT investigations at the interface between filling and bovine tooth tissue. The benefit of multiple analytical techniques and the combination of structural and elemental analysis will be demonstrated. T2 - HZB User Meeting 2021 CY - Online meeting DA - 09.12.2021 KW - Dental materials KW - X-ray refraction KW - Computed tomography KW - X-ray fluorescence PY - 2021 AN - OPUS4-54094 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Trappe, Volker T1 - Dauerfestigkeitsgrenze von CFK charakterisiert mit Röntgenrefraktionstopographie in situ mechanischer Beanspruchung T2 - DGZfP / DACH Jahrestagung 2015 CY - Salzburg, Österreich DA - 2015-05-10 PY - 2015 AN - OPUS4-33184 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kupsch, Andreas T1 - Threat detection and characterisation by spectroscopic THz-imaging T2 - Future Security- 2nd Security Conference Karlsruhe CY - Karlsruhe, Germany DA - 2007-09-12 PY - 2007 AN - OPUS4-15479 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - Synchroton based micro-CT and refraction enhanced micro-CT of MMC T2 - International Symposium on NDT in Aerospace CY - Fürth, Germany DA - 2008-12-03 PY - 2008 AN - OPUS4-18152 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kupsch, Andreas T1 - Reconstruction of limited CT data of fuel cell components using DIRECTT T2 - Ulm Electro Chemical Talks CY - Ulm, Germany DA - 2010-06-15 PY - 2010 AN - OPUS4-21519 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Evsevleev, Sergei T1 - Formation of refractive distortions in radiology T2 - 7th Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 2015-12-09 PY - 2015 AN - OPUS4-35126 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Axel T1 - Reduzierung von Missing-Wedge-Artefakten mit DIRECCT T2 - DGZfP-Jahrestagung 2014 CY - Potsdam, Germany DA - 2014-05-26 PY - 2014 AN - OPUS4-30842 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kupsch, Andreas T1 - Verbesserte Elektronen-Tomographie mittels DIRECTT-Algorithmus T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-23769 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - Numerische Korrektur des Hinterleuchtens von Röntgendetektoren T2 - DACH-Jahrestagung 2012 CY - Graz, Austria DA - 2012-09-17 PY - 2012 AN - OPUS4-26636 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rübner, Katrin T1 - A silica-based protective system modified with rock powder for the preservation of tuff stone N2 - Tuffs are lightweight and porous pyroclastic rocks composed of a volcanic ash matrix containing pumice and rock fragments, quartz, sanidine and other individual crystals, zeolites, and clay minerals. Due to their low density and high porosity, tuff stones are easy to work with and transport. They have been used as construction material in many historical buildings in Germany. However, most tuff stones exhibit poor resistance to weathering due to their morphology and porosity. If the physico-chemical degradation of the stones is already well advanced, ensuring the safety of the buildings often requires extensive stone replacement. However, this contradicts the fundamental principle of conservation, which prioritises the preservation of the original material. In a recently completed research project, a silica-based protective system modified with rock powder was developed for the preservation of tuff stone. Suitable colloidal silica dispersions and modified rock powders customised produced from tuff waste were used. The protective system was optimised to reduce the capillary water absorption of tuff while maintaining its water vapour diffusion properties, to build a durable protective system-tuff bond, and to achieve a visual and tactile resemblance to tuff. The protective system was developed at laboratory scale. It was subsequently applied to a test area at a restoration site in Berlin-Zehlendorf, Germany, to assess its performance under outdoor conditions. By applying the new protective system, the historic building structure is better preserved, tuff stone resources are saved, and tuff waste is effectively recycled. T2 - STONE 2025 - 15th International Congess on the Deterioration and Conservation of Stone CY - Paris, France DA - 08.09.2025 KW - Protective system KW - Rock powder KW - Silica sol KW - Stone preservation KW - Tuff stone KW - Tuff waste recycling PY - 2025 AN - OPUS4-64751 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Chaurasia, Prashant Kumar T1 - Automated In-situ Monitoring and Analysis of Process Signatures and Build Profile During Arc-based Directed Energy Deposition N2 - Automated in-situ synchronous monitoring and analysis of key process signatures during arc-based directed energy deposition (DED) process are the key challenges for layer-by-layer printing of large-scale parts. An attempt is presented here for real-time monitoring of process transients, deposit profile, and quantitative assessment of arc power, energy input and its influence on deposit dimensions. The workflow including setup, job generation and data analysis is fully automated in Python to allow large scale experiments with fast analysis results. T2 - 2nd Online Young Welding Professional International Conference CY - Online meeting DA - 06.02.2025 KW - Additive Manufacturing KW - Arc welding KW - DED-arc KW - Monitoring KW - Deposition profile PY - 2025 AN - OPUS4-62663 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kupsch, Andreas T1 - 2D-CT Rekonstruktionen ohne gefilterte Rückprojektion mit DIRECTT T2 - DACH-Jahrestagung 2008 CY - St. Gallen, Switzerland DA - 2008-04-28 PY - 2008 AN - OPUS4-17425 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schors, Jörg T1 - Materialcharakterisierung durch tiefenaufgelöste Röntgen-Diffraktrometrie T2 - DGZfP-Jahrestagung 2005 CY - Rostock, Germany DA - 2005-05-02 PY - 2005 AN - OPUS4-11403 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - Werkstoffcharakterisierung mittels Röntgen-Refraktions- und Röntgen-Weitwinkel-Topographie T2 - DGZfP-Jahrestagung 2010 CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-22883 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Axel T1 - Numerical correction of X-ray detector backlighting T2 - HZB User Meeting 2011 CY - Berlin, Germany DA - 2011-11-30 PY - 2011 AN - OPUS4-24566 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - Non Destructive Evaluation of Advanced Materials by X-ray Refraction Topography T2 - Materials Science and Engineering MES '08 CY - Nuremberg, Germany DA - 2008-09-01 PY - 2008 AN - OPUS4-18540 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Artinov, Antoni T1 - A General Analytical Solution for Two-Dimensional Columnar Crystal Growth during Laser Beam Welding of Thin Steel Sheets N2 - The main solidification parameters, namely the crystal axis, the growth rate, and the cross-sectional area of the columnar crystal control the primary microstructure and thus the final weld seam properties. Limited understanding of solidification parameters due to complexities in experimental and theoretical weld pool boundary determination and its mathematical description. Application of local Lamé curves for efficient weld pool boundary reconstruction Derivation of general analytical solutions for the main solidification parameters of a two-dimensional columnar crystal growth during laser beam welding of thin steel sheets. The Lamé curves approximation technique was successfully applied for the reconstruction of the rear part of the two-dimensional steady-state weld pool boundary. General analytical expressions for the main solidification parameters, namely the crystal axis, the growth rate and the cross-sectional area of the crystal were derived. The derived expressions and herewith obtained results were verified and validated by comparing them to known theoretical solutions and experimental measurements. Dimensionless analysis of the influence of the size and shape of the rear weld pool boundary on the solidification parameters was provided. The derived general solutions and the analysis provided allow for critical welding parameters to be estimated and adapted accordingly to improve the welding process. T2 - 3rd International Conference on Advanced Joining Processes CY - Braga, Portugal DA - 19.10.2023 KW - Laser beam welding KW - Analytical solution KW - Columnar crystal growth PY - 2023 AN - OPUS4-59174 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Skłodowska, Anna A1 - Lay, Vera A1 - Baensch, Franziska A1 - Niederleithinger, Ernst A1 - Kühne, Hans-Carsten T1 - Microseismicity monitoring in materials for nuclear waste storage repositories N2 - One of the major tasks in nuclear waste management is to design safe and reliable sealing structures for radioactive waste repositories. Particularly for salt as a host rock, engineered barrier systems for underground waste disposal must be constructed of well-understood (cementitious) materials that will sustain environmental conditions and ensure high durability. Within the SealWasteSafe project, we studied two materials with a potential for sealing structures for nuclear waste repositories: an innovative alkali-activated material (AAM) and standard salt concrete (SC). To analyze the development of microstructural changes within the materials, we monitored microseismicity (aka acoustic emission monitoring) occurring during the hardening and setting period in two 340-liter-cubic specimens for up to ~250 days. The monitoring results showed, that in the first 61 days, fewer events occurred in AAM compared to SC. After this time the number of events in AAM sharply increased and significantly exceeded those observed in SC. However, the source localization analysis revealed that the increase of microseismicity in AAM material was not related to the formation of macro-cracks within the material but was mainly caused by the surface effects. Accompanying analysis of the test specimens with additional methods (such as e.g., X-ray CT) proved that no macro-cracks were observed inside the AAM specimen. Further analysis in the time and frequency domains helped to characterize the tested materials and to estimate their potential to be used for engineered barriers in nuclear waste repositories. Overall, our study shows the potential of microseismicity monitoring for feasibility studies and quality assurance in a broad range of applications, also in structural health monitoring. T2 - 84. Jahrestagung der Deutschen Geophysikalischen Gesellschaft CY - Jena, Germany DA - 10.03.2024 KW - Microseismicity KW - Nuclear waste repositories KW - Acoustic emission KW - SealWasteSafe project KW - Salt rock KW - Alkali-activated materia PY - 2024 AN - OPUS4-60549 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Liao, Chun-Man T1 - Assessment of prestress loss in a large-scale concrete bridge model under outdoor condition N2 - The presentation shows that subtle variations in coda wave velocity can capture minor temperature effects, offering a good understanding of how a outdoor prestressed concrete structure responds to environmental conditions over time. Ultimately, this work contributes to development of more comprehensive and resilient structural health monitoring strategies for prestressed concrete infrastructure. T2 - EVACES 2025 CY - Porto, Portugal DA - 02.07.2025 KW - Coda wave interferometry KW - Damage detection KW - Prestress loss KW - Seismic interferometry KW - Structural health monitoring PY - 2025 AN - OPUS4-64211 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartelmeß, Jürgen A1 - Gawlitza, Kornelia A1 - Bartholmai, Matthias A1 - Rurack, Knut T1 - Developments towards the fluorescence based sensing of hazardous gases N2 - Fluorescence based sensing is a versatile approach for the trace analysis outside of the laboratory, requiring suitable sensor materials and their integration into sensing devices. The versatility of fluorophores as probes, especially in terms of the possibility to tailor their optical as well as their recognition properties by synthetic modifications in a wide range, renders them a superior active component for the preparation of optical sensor devices. Recent works at BAM in this field include, for example, the detection of nerve gas agents, illustrating impressively the aforementioned benefits of fluorophores in optical sensing applications. In the interdisciplinary approach presented here, we target hazardous gases such as ammonia, benzene, and hydrogen sulfide, next to others, which pose a major threat to human health and environmental safety and for which the availability of a sensitive and reliable detection method is highly desirable. The dyes presented follow a “turn-on” fluorescence schematic which allows for the selective and sensitive detection of the respective gaseous analyte. The immobilization of the probe in polymeric matrices is then the next step toward the fabrication of a prototype device for molecular sensing. T2 - Colloquium of Optical Spectrometry (COSP) 2017 CY - Berlin, Germany DA - 27.11.2017 KW - Gas sensing KW - Fluorescence KW - KonSens PY - 2017 AN - OPUS4-43209 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Garrido, E. T1 - Dualplex lateral flow assay for simultaneous scopolamine and cannibal drug detection based on receptor-gated mesoporous nanoparticles N2 - Drug facilitated sexual assaults (chemical submission) consists in the criminal administration of psychoactive substances without the permission of the victim. Among these compounds, scopolamine (SCP) (commonly well-known as burundanga} has emerged as the perfect psychotropic substance for aggressors because its ingestion induces automatism in the brain of the victim causing a state of submission. Physiologically, an appealing feature of SCP is their relevant role as a non-competitive muscarinic acetylcholine receptor antagonist with rapid and robust antidepressant effects in humans and other species. Specifically, SCP is able to block or dampen the biological response because of binding to an allosteric recombinant human muscarinic acetylcholine receptor M2/CM2 (Mi-AChR) site that is separate from the active recognition site of acetylcholine, thereby inhibiting the effects of the natural substrate and even of a potent agonist such as bethanechol. Here, a straightforward portable strip in combination with bioinspired hybrid nanomaterials for SCP drug in situ and at site detection was developed. The strips allow direct identification of SCP in diluted saliva down to 40 nM in less than 15 min using a smartphone for readout. For this purpose, we prepared a nanosensor based on mesoporous silica nanoparticles {MSNs) loaded with a fluorescent dye and functionalized with bethanechol. Attachment of the M2-AChR 'cap' to the silica scaffold enabled pore closure through non-covalent recognition. interactions with the anchored bethanechol moieties. In the presence of SCP pores were opened, due to the preferential interaction of the drug with receptor, thus releasing the encapsulated reporter and allowing it to be detected. Additionally, to a single-track strip, the extraordinary modularity of the hybrid biosensor materials in combination with the strip-pattering technologies enabled us to obtain a dual-channel strip for SCP and cannibal drug detection in a simple way, providing comparable analytical performance, while enabling further tailoring to the user's needs. T2 - XVI International Workshop on Sensors and Molecular Recognition CY - Valencia, Spain DA - 06.07.2023 KW - Schnelltest KW - Vor-Ort-Analytik KW - Drogen KW - Indikatorfreisetzung KW - Lateral Flow Assay PY - 2023 AN - OPUS4-57943 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tobias, Charlie T1 - Design and Application of Polymer-core/ Silica-shell Particles as Promising Tools for Multiplexed Assays N2 - The simultaneous detection of different analytes has gained increasing importance in recent years, especially in the fields of medical diagnostics and environmental analysis. Multiplex assays allow for a range of biomarkers or pollutants to be rapidly and simultaneously measured. Particularly suitable formats for multiplexing are bead-based assays. The beads employed need to fulfil size and density requirements, important for instance for flow cytometry, and shall exhibit a high modularity to be facilely adapted to various kinds of analytes and detection systems. Core/shell particles are ideally suited in this sense because of their modularity in design and adaptability for various (bio)analytical assays. Here, polystyrene particles coated with different kinds of shells are presented, possessing features that are useful for a multitude of assay formats. The particles in focus were coated with mesoporous and non-porous silica shells, with the possibility to introduce magnetic features to facilitate easier handling dependent on the assay format (e.g., in microfluidics). With high throughput analyses in mind, cytometric model assays were developed. Different factors such as pH or mediator salt used during shell preparation were evaluated with shell inspection by electron microscopy (SEM/TEM/EDX) being key to architectural control of the monodisperse particles. The optimized core/shell particles can be functionalized with capture biomolecules for toxins, viruses, or drugs to demonstrate particle performance. Showing how tailoring of the shell’s surface area controls sensitivity and dynamic range of the assay, an antibody-based assay for the detection of mycotoxins and a multiplex assay for the determination of DNA from different human papilloma virus (HPV) lines were developed. T2 - ICASS 2022 CY - Palma, Mallorca, Spain DA - 25.04.2022 KW - Core–shell particles KW - Multiplexing KW - Surface area control KW - Cytometry PY - 2022 AN - OPUS4-54752 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Manzoni, Anna Maria T1 - Early Material Damage in Equimolar CrMnFeCoNi in Mixed Oxidizing/Sulfiding Hot Gas Atmosphere N2 - The use of more and more varied fuels implies an increased list of criteria that need to be addressed when choosing a material for a combustion chamber and its supply pipes. The materials must be very resistant against corrosion, especially when the process takes place at temperatures above 500°C. In this work the influence of SO2 on the surface of the “Cantor alloy” is investigated. T2 - HEA-Symposium "Potential for industrial applications" CY - Dresden, Germany DA - 12.05.2022 KW - High entropy alloy KW - Corrosion KW - Sulfiding KW - Transmission electron microscopy PY - 2022 AN - OPUS4-55397 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Morcillo, Dalia T1 - Lithium isotope analysis combining atomic absorption spectroscopy and machine learning N2 - In this poster for the SCIX Conference, we apply an analytical procedure based on the monitoring of the lithium isotope through the partially resolved isotope shift in the electronic transition 22P<-22S around wavelength 670.80 nm using high-resolution continuum source atomic absorption spectrometer (HR-CS-AAS) in combination with machine learning (ML) for the determination of Li Isotope ratio analysis. T2 - SCIX Conference CY - Providence, RI, USA DA - 26.09.2021 KW - Lithium isotope KW - High-resolution continuum source atomic absorption spectrometer KW - Machine learning PY - 2021 AN - OPUS4-53686 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pérez-Padilla, Victor T1 - Fluorescence detection of perfluorocarboxylic acids with core-shell particles N2 - Perfluorocarboxylic acids (PFCAs) are a family of compounds that consist of a fully perfluorinated carbon backbone and a carboxylic acid moiety1. PFCAs have been classified as substances of very high concern by REACH regulations due to their persistence in the environment, non biodegradability and toxicological effects2. Thus, there is significant interest in detecting PFCAs in ground, waste, surface and drinking water. Fluorescence detection is a portable, easy-to-operate and cost-effective alternative, enabling the onsite detection of these analytes e.g., with miniaturized fluidic sensors. Here, a guanidine benzoxadiazole (BD) dye covalently attached to a polymerizable methacrylate unit was developed for the integration of the dye into polymers and on surfaces. The response behavior of the dye toward PFCAs was assessed in monophasic (EtOAc) and biphasic (EtOAc-H2O) solvent systems, the biphasic system being advantageous for the extraction of the hydrophobic organic acids from the aqueous phase. The BD dye was integrated into sensory silica core-polymer shell particles for the sensing of PFCAs directly in aqueous media. Submicron SiO2 particles were functionalized with 3 (trimethoxysilyl)propyl methacrylate followed by radical polymerization with the BD dye and ethylene glycol dimethacrylate. TEM images showed a homogeneous polymer shell with a thickness of 75±2 nm. By incorporating the BD dye into core-shell particles, lower limits of detection (1.52 µM for perfluorooctanoic acid, PFOA) were achieved if compared to the use of the neat BD dye in a biphasic assay (17.3 µM for PFOA), and excellent discrimination against inorganic acids thanks to the hydrophobic polymer shell. The particle sensory platform has proven to be an alternative for the sensing of PFCAs directly in water. T2 - 5th International Conference on Applied Surface Science (ICASS) 2022 CY - Palma de Mallorca, Spain DA - 25.04.2022 KW - PFOA KW - Emerging pollutants KW - Polymer nanolayers KW - Fluorescence detection KW - Guanidine benzoxadiazole KW - Core-shell particles PY - 2022 AN - OPUS4-56513 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Morcillo, Dalia T1 - Atomic absorption spectroscopy and machine learning for lithium isotopic study N2 - The isotopic analysis of lithium is also relevant to the study of geological phenomena.1 In this work we propose improvements to the method for the isotopic analysis of lithium using a high-resolution continuum source atomic absorption spectrometer (HR-CS-AAS) coupled to a double echelle modular spectrometer (DEMON). 2 This tool for isotopic ratio determination is based on monitoring the isotopic components of lithium by their spin-orbit coupling and its isotopic shift of about 15 pm for the 22P←2 2S electronic transition around 670.788 nm. The data analysis was carried out by using a decision-tree-based ensemble machine learning (ML) algorithm. For the training of the algorithm (XGBoost), a set of samples with 6Li isotope amount fractions ranging from 0.06 to 0.99 mol-1 was used. Subsequently, the procedure was validated of a set of stock chemicals (Li2CO3, LiNO3, LiCl and LiOH) and a BAM candidate reference material, the cathode material LiNi1/3Mn1/3Co1/3O2 (NMC111). Finally, the ML model was applied to the set of geological samples, previously digested, for the determination of their isotope ratio. The optical resolution was improved from 140,000 to 790,000 to better deconvolution the lithium isotopic components in the atomic spectrum. And the method was compared with multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). The results are metrologically comparable. T2 - Colloquium Spectroscopicum Internationale XLII (CSI XLII) CY - Gijón, Spain DA - 30.05.2022 KW - Lithium isotope KW - Atomic absorption spectroscopy PY - 2022 AN - OPUS4-56357 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pérez-Padilla, Victor T1 - Direct detection of glyphosate in water with fluorescent molecularly imprinted polymer particles N2 - Analysis of environmental contaminants such as pesticides is increasing in importance due to frequent detection of residues in water reserves and food stuff, as well as lowering of maximum residue levels (MRLs). Molecularly imprinted polymers (MIPs) have been developed for preconcentration of these analytes prior to analysis by chromatographic techniques [1]. MIPs are prepared by polymerization of monomers in a matrix containing the analyte, followed by extraction of the analyte to obtain binding sites that are complementary to the analyte of interest. Recently, our group developed MIPs containing fluorescent reporter molecules that can be used for direct detection and quantification of 2,4-D in contaminated water. Core/shell MIP particles were employed, consisting of sub-micron silica nanoparticles coated with a MIP shell containing a fluorescent reporter whose signal was enhanced upon binding with 2,4-D in water. A limit of detection of 20 nM was attained [2]. We present here a comparable system, composed of fluorescent core-shell MIPs for the direct analysis of pesticides in environmental samples. T2 - UK-Poland-Ukraine Bioinspired Materials Conference CY - Online meeting DA - 29.11.2022 KW - Core-Shell Particles KW - Fluorescent Probes KW - Molecularly Imprinted Polymers KW - Glyphosate KW - Guanidinium Receptors PY - 2022 AN - OPUS4-56514 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weinel, Kristina T1 - Damage induced by electric field of gold microparticles on silicon oxide substrate in the scanning electron microscope N2 - 1. Introduction A normally unwanted process that can arise when converging an electron beam onto, e.g. microparticles, has been called "damage induced by electric field" (DIEF) [1]. By DIEF, the convergent electron beam (CEB) imparts a high amount of energy to the microparticle locally and strongly interacts with its atoms. At a specific current density J, which can be controlled by the convergence angle α, the irradiated material begins to transform. The phenomenon of expelling nanomaterial from microparticles under the influence of a convergent electron beam (CB) in a transmission electron microscope (TEM) has been largely studied [2]. Several types of nanoparticles (NPs) have been observed for different metallic materials and metal oxides after specific CB protocols (P) in the TEM. Thus, DIEF can be used as a promising synthesis method controlled changes of micrometric material to create new nanometric material compositions and morphologies. While these reactions have been observed in situ at the high acceleration voltages associated with TEM, it remains unclear whether the SEM can also be used to fabricate NPs via DIEF. In contrast to TEM there is no possibility to statically convert the electron beam to a range of α to reach the needed J as in TEM. Instead, the scanning parameters and the magnification can be manipulated so as to find an integrated J. Considering that the scanning electron microscope (SEM) is easier to use, more accessible and cheaper than a TEM, here we explore the possibility to transfer the concepts of DIEF known to operate in the TEM for in situ NP generation SEM. 2. Objectives The main goal is to determine whether DIEF can be translated to the SEM perform to controlled in situ fabrication of nanoparticles from microparticles, using gold microparticles on amorphous SiO substrate as precursors. We determine what experimental parameters must be taken into account to create SEM-based CBPs for NP creation in the SEM with these materials. 3. Materials & methods Gold microparticles with diameter of around 1 to 3 µm were deposited on electron transparent amorphous SiO/SiO2 substrate. Using a convergent electron beam protocol (CBP) in a scanning electron microscope (SEM) at an acceleration voltage of 30 kV, the gold microparticles were irradiated until a production of NPs takes place as shown in figure 1. The beam current varied between 16 and 23 nA. 4. Results Depending on the CBP parameters, either only Au NPs or a mixture of Au and Si NPs are produced. The particle size ranges from a few nm up to 100 nm, and it depends on the distance of the NP to the initial position of the microparticle. Further beam parameters such as the dwell time, the effective irradiated volume and particle size determine whether NPs are produced or if the microparticles only are expelled from the substrate without reacting. 5. Conclusion The SEM can be used as an instrument for synthesizing nanomaterials via DIEF. Different CBP protocols can be applied for obtaining either gold nanoparticles or silicon + gold nanoparticles T2 - Microscopy Conference CY - Darmstadt, Germany DA - 26.02.2023 KW - Scanning electron microscopy (SEM) KW - Gold nanoparticles KW - Electron beam induced modification PY - 2023 AN - OPUS4-58261 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weinel, Kristina T1 - Complex artificial features on a TEM transparent membrane N2 - The phenomenon of expelling nanomaterial from microparticles of different materials, such as Au, WO3 or B2O3 under the influence of a convergent electron beam (CB) of a transmission electron microscope (TEM) was reviewed by Ignacio Gonzalez-Martinez [1]. Converging the e-beam in a TEM means that a high amount of energy enters the microparticle at a very local place and interact with the matter. Obviously, during the convergent beam protocol, no imaging with the electron beam is possible, but at the end, nanoparticles with different appearances lie down next to the microparticle while its size is reduced. Hence, there is a blind spot in the observation, which we want to fill, as we want to help clarify the nature of the expelling phenomenon. One hypothesis that explains the phenomenon is the so-called damage (of the microparticle) induced by an electric field (DIEF). Within this theory, the material is ionized and expelled in form of ionic waves. Our aim is therefore to fabricate specimens with artificial microlandscapes, as schematically exemplified in figure 1a), using the focused ion beam (FIB) and micromanipulators, as experimental setups to follow the paths of the expelled material. As a first step towards the fabrication of such specimen, we make experimental feasibility studies for each fabrication method, FIB structuring with Ga+ ion beam and micromanipulated microparticle deposition. Bridges (gray regions in Fig. 1) are created by milling a commercially available electron transparent membrane (silicon oxide or carbon) of a Cu-TEM grid. Platinum or carbon walls (blue features in Fig. 1) are built to stand on those bridges. Microparticles (yellow sphere in Fig. 1) of gold or other material are deposited in the center of the bridges. Figure 2a) shows four square holes (black area) and between them the residual silicon oxide membrane bridges (dark grey). On top of the bridges, walls (light grey) are deposited. The width of the bridges is different, the walls overlap the holes as well as the distance between the walls is very small, so these and other parameters need to be optimized. Figure 2b) shows a square hole (black) with bridges (white) on the right side on top of a carbon membrane (grey). There are still some obstacles which needs to be eliminated. For instance, the deposition process of the walls is not reliable as visible at the wall on top where a hole arises instead of a wall. These studies are still in progress and the results are further discussed in terms of the applicability for the DIEF experiment in the TEM. T2 - 4th EuFN and FIT4NANO Joint Workshop / Meeting CY - Vienna, Austria DA - 27.09.2021 KW - Transmission electron microscope (TEM) KW - Sample preparation KW - Micromanipulation KW - Focussed ion beam growth KW - Nano-landscape PY - 2021 AN - OPUS4-58259 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Agudo Jácome, Leonardo T1 - Experimental study on M23C6 nucleation and growth mechanisms in Ni-base superalloy single crystals N2 - The addition of carbon to Ni-base superalloy single crystals has been increasingly carried out to improve low angle grain boundary (LAGB) resistance and castability. Consequently, the precipitation of carbides is highly probable during long-term application of components subjected to higher temperatures (> 1000 °C). While the view on the role of carbides as strengthening or detrimental is polemical, their inevitable increased presence in carbon-doped alloys must be addressed. In the present work, the evolution of M23C6 carbides forming in the commercial grade Ni-base superalloy LEK 94 during high-temperature and low-stress creep exposure is assessed. Although carbon is not intentionally added to the LEK 94 alloy, it admits up to 0.1 at. %, which together with the high content of M23C6-forming transition metals, leads to their precipitation. The precipitation is induced here during creep experiments at 1020 °C and a nominal applied stress of 160 MPa along [001]. The correlation of precipitation and external load is carried out by evaluating the carbides in the gage section of parallel and circularly notched cylindrical samples, as well as in their heads. Characterization is made by transmission electron microscopy (TEM). Although primary MC carbides form mostly in interdendritic regions during casting, high temperature exposure induces M23C6 carbide nucleation especially in the γ phase of dendritic regions, where a stronger partitioning of refractory elements is present. The carbides have a needle shape with their main axis on 〈100〉 and a cube-on-cube orientation relationship. They present incoherent {100} facets along their elongated region and semi-coherent {111} facets at their ends. Their nucleation and growth mechanisms are discussed based on microstructural observation under different experimental conditions. T2 - Modelling and Simulation of Superalloys. International Workshop. CY - Bochum, Germany DA - 29.03.2017 KW - Ni-base superalloy KW - Single cystal KW - Creep KW - Carbide KW - Scanning transmission electron microscopy (STEM) PY - 2017 AN - OPUS4-40249 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sonnenburg, Elke T1 - Präparation, Kontrastierung und Darstellung des Gefüges von additiv gefertigtem austenitischem Stahl 316L N2 - Der weit verbreitete austenitische Stahl 316L soll auch mittels additiver Fertigung verarbeitet werden (316L-AM). Zur Entwicklung optimaler Aufbauverfahren ist ein detailliertes Verständnis des Gefüges notwendig. Das additiv aufgebaute Gefüge zeigt eine Mikrostruktur, die geprägt ist von sehr hohen Abkühlraten und gerichtetem Kornwachstum. Mittels klassischer Metallographie können die Charakteristika des Gefüges wie Körner, Subkörner und Schmelzlinien sichtbar gemacht werden. Mittels EBSD werden Kristallorientierungen ermittelt und bildhaft aufbereitet. Die Feinstruktur der Körner wird im REM in der Übersicht aufgelöst. Erst im TEM kann bei hoher Vergrößerung die Natur der Zellstruktur quantitativ ermittelt werden. T2 - Metallographie 2020 CY - Online meeting DA - 16.09.2020 KW - Präparation KW - Kontrastierung KW - Additiv gefertigter Stahl PY - 2020 AN - OPUS4-51244 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rethmeier, Michael T1 - Single pass laser vacuum welding of thick steel plates using electromagnetic support N2 - The increasing demand for renewable energy produced by offshore wind turbines goes along with an increased demand in the production of offshore wind turbine foundations, so called “monopiles”, which are made by joining thick metal sheets. The industrial standard of multi-layer submerged arc welding (SAW) for joining of thick metal sheets is the current bottleneck in the production of monopiles. A possible increase in productivity by the implementation of high-power laser welding in a newly developed mobile vacuum chamber (MoVac) and an electromagnetic root support is the subject of this study. Single run butt welds are performed in flat position on S355 mild steel of thicknesses up to 80 mm using a disc laser system with 1030 nm wavelength and a maximum output of 60 kW. The laser optic is fixed on the MoVac-System which is held and manipulated by an articulated robot. T2 - 13th CIRP Conference on Photonic Technologies [LANE 2024] CY - Furth, Germany DA - 15.09.2024 KW - Laser beam welding KW - Laser welding with mobile vacuum PY - 2024 AN - OPUS4-62413 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - LA-ICP-TOFMS to study the interaction of MRI contrast agents with extracellular matrix components N2 - Non-specific Gd-based contrast agents (GBCAs) have been used in clinical magnetic resonance imaging (MRI) for more than 35 years. However, the interaction of such contrast agents with tissue components is not yet fully understood. Many diseases are associated with characteristic changes of the extracellular matrix (ECM). The ECM is a three-dimensional network of macromolecules providing structural and biochemical support of the surrounding cells in all mammalian tissues. It is composed of structural proteins (e.g., collagen, elastin) and proteoglycans, which consist of glycosaminoglycans (GAGs) covalently bound to a protein core. GAGs are long, linear polysaccharides composed of repeating disaccharide units that differ in molecular mass, disaccharide structure and degree of sulfation. GAGs are also characterized by their ability to form complexes with cations such as lanthanides. Thus, GAGs could be a potential binding partner for GBCAs as a whole or for dechelated Gd. Laser ablation inductively coupled plasma time-of-flight mass spectrometry (LA-ICP-TOFMS) was used to investigate the uptake and distribution of ionic Gd and various linear and macrocyclic GBCAs in spheroids mimicking biological tissue and exhibiting different ECM expressions. In addition to Gd, other relevant elements such as Cu, Fe, P and Zn were also monitored. Spheroids from Chinese hamster ovary (CHO) cells and GAG-depleted CRL-2242 cells were incubated with gadolinium chloride and various GBCAs. Although all spheroids were exposed to identical Gd concentrations, differences were observed in the spatial distribution and the amount of Gd taken up. After incubation with linear and macrocyclic GBCAs, Gd is detected in the interior of both types of spheroids. In contrast, incubation with gadolinium chloride leads to an enrichment in the outer regions of the spheroids as well as to much higher Gd contents compared to incubation with GBCAs. LA-ICP-TOFMS can make an important contribution to better understand the relationship between the affinity of GBCAs and ECM components such as GAGs. However, to elucidate such complex interactions, further studies are needed, also with other (bio-)analytical techniques. T2 - 20th European Winter Conference on Plasma Spectrochemistry (EWCPS-2025) CY - Berlin, Germany DA - 02.03.2025 KW - ICP-MS KW - Laser ablation KW - Contrast agent KW - Spheroid KW - Extracellular matrix PY - 2025 AN - OPUS4-62692 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vogl, Jochen T1 - New Potential Hematite and Magnetite Reference Materials for Iron Isotope Analysis by Solution- and LA-MC-ICP-MS N2 - Two potential reference materials HMIE-NP-B01 and MARK-NP-B01 for Iron isotope analysis. These two RMs will used later as calibrant the corroded material generated from MIC. T2 - ANAKON 2025 CY - Leipzip, Germany DA - 10.03.2025 KW - Fe isotope KW - Fe-dominated minerals KW - Laser ablation KW - LA-MC-ICP-MS PY - 2025 AN - OPUS4-62829 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst T1 - Condition monitoring for lifetime extension of interim storage facilities N2 - The German interim nuclear storage facilities are designed for a 50 year service life and 40-year operating period. They will be needed much longer, as a final repository will not be available until 2050 at the earliest. The objective of ZuMoBau-ZL is to develop a suitable condition assessment and monitoring concept suitable for the structures in interim storage facilities, including life prediction models, with which the remaining service life can be predicted, verified, and monitored as realistically as possible. T2 - IAEA ICARST 2025 CY - Vienna, Austria DA - 07.04.2025 KW - Nuclear waste KW - Interim storage KW - Liefetime extension KW - Reinforced concrete PY - 2025 AN - OPUS4-62984 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - López-Puertollano, Daniel T1 - Superparamagnetic core-shell particles application: from cytometry assay to simplified fluidic system N2 - Superparamagnetic hybrid polystyrene-core silica-shell beads have emerged as promising alternatives to traditional in flow cytometry-based competitive antibody assays [1]. These materials consist of a polystyrene core and a silica shell, in which magnetic nanoparticles are embedded, facilitating the handling and retention in tests. The outer silica surface allows for easy modification through silane chemistry, allowing the attachment of antibodies, or other molecules of interest. Ochratoxin A (OTA), a mycotoxin that can be found in grain products, coffee, cacao, or grapes, was chosen as the main target analyte to detect [2]. In this study, previously in house produced anti-OTA antibodies [3] were attached to the surface of the particles and the whole system was used as detection entity. In a first approach, the system was used for the development of a competitive cytometry assay using an OTA-fluorescein (OTA-F) adduct as competitor and marker. In this assay the fluorescence emitted by the OTA-F competitor on the surface of the particle was detected at a wavelength of 518 nm using a 533/30.H filter and was correlated to the forward scatter (FSC) to distinguish it from the excess of competitor still in solution. Under optimised conditions, the final assay showed a limit of detection of 0.03 nM. In a second approach, a simplified ready-to-inject fluidic system was built based on a laser (488 nm) and a photomultiplier detector to measure the signal of competitor still in solution. The competition step was carried out in a vial and the whole mixture was injected into the fluidic system. To avoid signal scattering, the particles were separated in-line using a magnet and only the OTA-F competitor still in solution was detected, reaching a limit of detection of 1.2 nM. With the aim to reduce user manipulation, the final assay is still under development for in-line incubation during the competitive step. T2 - 15th Rapid Methods Europe Conference CY - Amsterdam, Netherlands DA - 06.11.2023 KW - Microfluidics KW - Flow cytometry KW - Bead-based assays KW - Magnetic beads KW - Core-shell particles KW - Immunoassays PY - 2023 AN - OPUS4-58817 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weinel, Kristina T1 - Damage induced by electric field of microparticles in the electron microscope N2 - Damage induced by electric field (DIEF) that happens in the transmission electron microscope (TEM) when converging the electron beam (e-beam) on microparticles (MPs) can be used to synthesis new nanomaterial and nanomaterial compositions. The research questions are to clarify the limits and possibilities of the method regarding materials that can be produced, systems to which it is applicable and working beam parameters. Synthesis of nano-objects from microparticles using DIEF in TEM could be shown for different materials. Additionally, DIEF using the e-beam in a scanning electron microscope (SEM) can also be used to synthesis nano-objects. A deeper material analysis of this nano-objects was done using TEM and shows that the material of the nanoparticles (NPs) can be gold or/and silicon. Furthermore, the size of the NPs depends on the distance to the center of DIEF whereby the larger NPs are closer to the center. The areas of gold NPs are promising candidates for plasmonic or photonic devices for energy storage or transport. T2 - PhD-Day 2022 CY - Berlin, Germany DA - 06.09.2022 KW - Electron microscopy KW - Electron beam induced modification KW - Gold nanoparticles PY - 2022 AN - OPUS4-58264 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wehmann, N. T1 - Non classical nucleation in calcium sulfates Insights from the hyper arid Atacama Desert N2 - Gypsum (CaSO4∙2H2O) and anhydrite (CaSO4) are among the dominant evaporite minerals in the Atacama Desert [1]. They are distributed ubiquitously, and play a key role in local landscape evolution. The formation mechanism of especially anhydrite has been a matter of scientific debate for more than a century [2]. To date, there exists no model that can reliably predict anhydrite formation at earth’s surface conditions. While thermodynamics favor its formation [3], it is hardly achieved on laboratory time scales at conditions fitting the Atacama Desert. Long induction times for nucleation have recently been modeled by Ossorio et al. [4]. However, anhydrite can be readily found in the Atacama Desert. Recently, the mineral was synthesized in flow-through reactors as a byproduct of K-jarosite dissolution at high water activity (aw=0.98) and room temperature [5], even-though the thermodynamic stability field begins only under a value of ~0.8. Additionally, recent studies investigated the nano-structure of various calcium-sulfates, which advocate for highly non-classical crystallization behavior [6]. The specific roles of particulates, ionic or organic reagents working as catalysts for the non-classical crystallization pathway remain to be determined. Here, we present recent results from flow-through experiments as well as analyses of anhydrite samples from the Atacama Desert. Flow-through experiments were performed to systematically explore the domains of flow rate, composition, ionic-strengths and starting materials. Neither primary, nor secondary anhydrite was produced in any of these experiments. Analyses on Atacama samples reveal the existence of at least three distinct anhydrite facies, with differing mineralogy and micro- to nano-structures. The facies are (1) aeolian deposits with sub-µm grain sizes, (2) (sub-)surface nodules that formed from aeolian deposits and (3) selenites with secondary anhydrite rims. Possible mechanisms of their formation will be discussed. T2 - Goldschmidt2023 CY - Lyon, France DA - 13.07.2023 KW - Gypsum KW - Anhydrite KW - Atacama Desert KW - Local landscape evolution PY - 2023 AN - OPUS4-58988 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prakash, Swayam T1 - Photophysical Understanding of Urobilin and its Zinc Complexes for Water Quality Testing N2 - Faecal contaminants in water are considered serious threats for human health, due to the presence of viruses, bacteria and other harmful microorganisms.1 Urobilin (UB) is a well-known faecal pigment and can be used as a marker for faecal matter in water.2 UB is commonly present in the urine of all mammals as the catabolic end product of bilirubin degradation.2 As the only simple chemical approach to its detection, Schlesinger’s test is usually used to enhance the weak fluorescence of UB in alcoholic media by complexation with Zinc.2, 3 The major limitation of this method is the only weak enhancement of the intrinsically weak UB fluorescence in aqueous media.3 This work presents an approach to introduce different Zn salts for improved fluorescence response, where we found a clear dependence of the fluorescence yield of UB-Zn(II) complexes on the counterion of the salt in water. By employing a combination of fluorescence parameters like transition energy, fluorescence intensity, and fluorescence lifetime, a photophysical understanding of the structure and conformation of the UB-Zn(II) complexes responsible for the fluorescence enhancement in water could be gained. The possibilities of developing a sensitive analytical method based on the acquired understanding are also discussed. T2 - Central European Conference on Photochemistry CECP 2024 CY - Bad Hofgastein, Austria DA - 18.02.2024 KW - Water analysis KW - Faecal contamination KW - Metal complexes KW - Fluorescence PY - 2024 AN - OPUS4-59874 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weinel, Kristina T1 - Fabrication of 2D assemblies of disordered gold nanoparticles and investigation of localized surface plasmon resonances N2 - Interaction of electromagnetic waves, such as electron beams or light, with conductive material can lead to localized surface plasmon resonances (LSPRs) where the incoming energy can be deposited in a collective excitation of electrons of the conduction band, which in turn can result in coherent localized plasmon oscillations. LSPR in metallic nanostructures, such as nanoparticles (NPs), which are sensitive to geometry, material composition and environment, are currently utilized in a wide range of applications, such as surface-enhanced Raman spectroscopy, plasmonic wave guides, improved solar cells, on-chip particle accelerators and nanoantennas. A host of studies that focus on plasmonic NPs ranging from single NPs with several shapes (cubic, spherical, tetrahedral) over 1D assemblies of NPs such as chains, to ordered 2D assemblies of NPs show an increase of the complexity regarding the hybridization behavior of LSPRs eventually lead to delocalized Surface Plasmons. Furthermore, Anderson predicted in 1977 the absence of diffusion or delocalization of waves in disordered systems, which has been discussed as the underlying mechanism for LSPRs localization in disordered metallic thin films and ultrathin 2D networks. Our aim is to further develop these studies on the surface plasmon localization in disordered structures by (1) developing a novel NPs assembly fabrication method that allows fabricating disordered assemblies of NPs of a wide range of NPs sizes, and (2) probing the LSPR with high-resolution electron energy-loss spectroscopy (EELS). Moreover, the dominant dipolar interaction between the NPs, also facilitates an efficient numerical modeling of these systems, which in comparison with the experiments allows for an in-depth study of the impact of various geometric parameters as well as retardation and life-time damping on the observed localization behavior. To synthesize 2D disordered assemblies of gold NPs on a TEM transparent silicon oxide substrate, a new synthesis routine was developed. This procedure is based on sublimation and redeposition of a gold microparticle precursor induced by an electron beam in a scanning electron microscope (SEM) operated at 30 kV. To characterize the assembly of synthesized NPs in terms of size, shape and spreading over the substrate, TEM measurements were conducted subsequently. To study LSPRs experimentally, EELS in scanning transmission electron microscopy (STEM) mode was carried out. The numerical modelling of LSPRs was performed using a self-consistent dipole model. The synthesized 2D disordered gold NPs assemblies exhibit a gradient in the NPs mean size, which ranges from 100 nm close to the precursor location down to 2 nm at a distance of more than 20 µm from the precursor location. Additionally, the interparticle distance between the gold NPs increases with increasing distance to the precursor location. The experimental investigation as well as the numerical simulation of the LSPRs demonstrate a localization behavior that decreases toward larger energies, which is driven by the disorder of the NPs assembly (mainly the random particle distance). That localization behavior stays in contrast to what was found in ultrathin 2D gold networks showing increasing of localization towards higher LSPRs energies. By varying the geometric parameters of the NPs assembly in the simulation, we could identify the NPs thickness as the parameter, that determines the energy-dependence of the localization. Specifically, a critical thickness of approx. 10 nm separates the two localization regimes, which correlates to the energy of the dipole mode resonance crucially depending on the thickness of the NPs. 2D disordered assemblies of gold NPs of a wide range of NPs sizes and distances can be synthesized directly on thin substrates facilitating structural characterization and EELS measurements in a TEM. It could be shown that such assemblies exhibit LSPRs with a localization behavior that may be tuned by the NPs sizes (including thickness) and interparticle distances. The proposed synthesis of random NPs assemblies opens new avenues for fundamental studies on Anderson localization in disordered plasmonic structures as well as its applications such as surface-enhanced Raman spectroscopy where localization behavior must be tuned to specific wave lengths. T2 - 17th European Microscopy Congress (EMC 2024) CY - Copenhagen, Denmark DA - 26.08.2024 KW - Transmission electron microscopy KW - Scanning electron microscopy KW - Localized surface plasmon resonances KW - Gold nanoparticle synthesis KW - Disordered assemblies PY - 2024 AN - OPUS4-60947 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gawlitza, Kornelia T1 - On-Site Detection of PFAAs with Dual Fluorescent MIPs Coupled to a Miniaturized Microfluidics Platform N2 - Per- and polyfluoroalkyl substances (PFAS) represent a class of synthetic organofluorine chemicals extensively utilized in the manufacturing of various materials such as firefighting foams, adhesives, and stain- and oil-resistant coatings. In recent years, PFAS have been considered as emerging environmental contaminants, with particular focus on perfluoroalkyl carboxylic acids (PFCAs), the most prevalent type among PFAS. PFCAs are characterized by a fully fluorinated carbon backbone and a charged carboxylic acid headgroup. Notably, they have been designated as Substances of Very High Concern and added to the REACH Candidate List due to their persistence in the environment, non-biodegradability and toxicological effects. Conventional techniques for the analysis of PFCA, such as GC-MS, HRMS and HPLC-based methods, are laborious, not portable, costly and require skilled personnel. In contrast, fluorescence assays can be designed as easy-to-operate, portable and cost-effective methods with high sensitivity and fast response, especially when analyte binding leads to a specific increase of a probe’s emission. Integration of such probes with a carrier platform and a miniaturized optofluidic device affords a promising alternative for PFCA monitoring. Here, a novel guanidine BODIPY fluorescent indicator monomer has been synthesized, characterized, and incorporated into a molecularly imprinted polymer (MIP) for the specific detection of perfluorooctanoic acid (PFOA). The MIP layer was formed on tris(bipyridine)ruthenium(II) chloride doped silica core particles for optical internal reference and calibration-free assays. Such system allows selective and reliable detection of PFCA from surface water samples, with minimum interference by competitors, matrix effects and other factors. Integration of the assay into an opto-microfluidic setup resulted in a miniaturized and easy-to-operate detection system allowing for micromolar detection of PFOA in less than 15 minutes from surface water sample. T2 - MIP2024: The 12th International Conference on Molecular Imprinting CY - Verona, Italy DA - 18.06.2024 KW - Sensor KW - PFAS KW - Molecularly imprinted polymers KW - Guanidine receptor KW - BODIPY PY - 2024 AN - OPUS4-60438 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winckelmann, Alexander T1 - Fluorine Depth Profiling in Lithium-Ion Battery Materials by GD-OES N2 - Lithium-ion batteries are a key technology for tackling challenges in energy and climate crisis, but up to 30 % are discarded right after production. Quality is closely related to the homogeneity of the used materials and coatings. Fluorine compounds, both in the polymer and from degradation of the electrolyte, are of special interest for the formation and aging of LIBs. Glow-discharge optical emission spectroscopy (GD-OES) emerged as a fast and convenient method for depth-profiling of battery materials. However, fluorine remains a spectroscopic challenge due to a high excitation energy and only few strong emission lines in the UV/Vis spectral range. We investigated the partial substitution of argon with neon in the plasma gas. The main emission line at 685.603 nm was monitored by both photo multiplier tube (PMT) with Czerny-Turner monochromator at 20 µm slit-size, and charge-coupled device (CCD) with 1200 lines/mm grating. For calibration, we used a set of hot-pressed copper cylinders with varying calcium fluoride amount fraction, ranging from 1.6 % to 4.4 %. Plasma gas mixtures with a mole fraction of 5 %, 10 % and 20 % neon in argon were used. Sensitivity in comparison to pure argon was increased by factor 4, 7 and 14, respectively. In general, PMT detection was more sensitive than CCD. As expected, sputter rates decreased with higher neon content in the plasma gas. Depth-profiling of the cathodes was performed in pulsed mode at constant voltage and pressure, which resulted in stable plasma conditions. We achieve matrix-independent quantitative information on fluorine distribution by correction based on sputter rates. This advancement in GD-OES provides a more accurate analytical approach for evaluating the homogeneity of lithium-ion battery materials, potentially leading to more sustainable and cost-effective manufacturing processes. T2 - 6th International Glow Discharge Spectroscopy Symposium CY - Liverpool, United Kingdom DA - 21.04.2024 KW - Lithium Ion Batteries KW - GD-OES KW - depth-profiling KW - fluorine PY - 2024 AN - OPUS4-60200 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Prabhakara, Prathik T1 - Ein synergistischer Ansatz zur Charakterisierung anisotroper Materialien mit Hilfe von Ultraschall und Mikrostrukturanalyse N2 - Es wird eine Studie zur Charakterisierung eines anisotropen Stahls vorgestellt, bei der Ultraschalluntersuchungen mit Mikrostrukturanalysen verbunden werden. Das Material weist hohe Festigkeit und Korrosionsbeständigkeit auf, zugleich ist mit anisotropen Eigenschaften die mechanischen und betrieblichen Eigenschaften beeinflussen zu rechnen. Vorläufige Ergebnisse lassen vermuten, dass weitere Untersuchungen notwendig sind, um die Fähigkeiten und Grenzen des Materials genau zu bestimmen. Es wird ein systematischer Ansatz mit Array- Prüfköpfen, Time-of-Flight Diffraction (TOFD) Technik und mikrostrukturellen Untersuchungen angewendet, um die Wechselwirkung zwischen Anisotropie und Mikrostruktur des Stahls zu analysieren. Ultraschallprüfungen mit der TOFD-Technik und in Tauchtechnik liefern Einblicke in das anisotrope Verhalten des Werkstoffes, einschließlich entsprechenden Kornorientierung, Dämpfung und Schallgeschwindigkeitsvariation. Diese Messungen führen in Verbindung mit mikrostrukturellen Analysen zu einem tieferen Verständnis des Materialverhaltens. Unser Hauptziel ist es, ein Framework zu erstellen, welches die Ultraschallantwort anisotroper Materialien mit ihren mikroskopischen Struktureigenschaften verbindet. Die vorgestellte Methodik ermöglicht eine zerstörungsfreie und zügige Bewertung der Materialintegrität, was besonders bei der Anwendung von Hochleistungsmaterialien relevant ist. Durch diesen integrativen Ansatz werden verschiedener Charakterisierungsmethoden kombiniert, um ein umfassenderes Materialverständnis zu erreichen. T2 - DGZfP-Jahrestagung 2024 CY - Osnabrück, Germany DA - 06.05.2024 KW - Ultrasonic Testing KW - Material Characterization KW - Microstructure Analysis KW - Time-offlight Diffraction (TOFD) KW - Non-Destructive Testing PY - 2024 UR - https://www.ndt.net/?id=29535 AN - OPUS4-60980 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Traub, Heike T1 - LA-ICP-MS investigation of the the interaction of MRI contrast agents with extracellular matrix components N2 - In clinical magnetic resonance imaging, non-specific Gd-based contrast agents (GBCAs) are frequently used to improve image quality. However, the interaction of GBCAs with tissue components is not yet fully understood. Many diseases, including inflammation, fibrosis, and tumor invasion, are associated with characteristic changes of the extracellular matrix (ECM). The ECM is a three-dimensional scaffold that embeds the cells of all mammalian tissues. It is composed of structural proteins (e.g., collagen, elastin) and proteoglycans, which consist of glycosaminoglycans (GAGs) covalently bound to a protein core. GAGs are characterized by their ability to form complexes with cations such as lanthanides. Thus, GAGs could be a potential binding partner for GBCAs as a whole or for dechelated Gd. Laser ablation inductively coupled plasma time-of-flight mass spectrometry (LA/ICP-ToF-MS) was used to investigate the uptake and distribution of different GBCAs in spheroids mimicking biological tissue and exhibiting different ECM expressions. Spheroids from Chinese hamster ovary (CHO) cells and GAG-depleted CRL-2242 cells were incubated with gadolinium chloride and various linear and macrocyclic GBCAs. Although all spheroids were exposed to identical Gd concentrations, differences in the amount of Gd taken up were observed. Gadolinium chloride is more strongly absorbed and accumulates mainly in the outer regions of the spheroids. In contrast, after incubation with linear and macrocyclic GBCAs, Gd is detected in the interior of both types of spheroids. Furthermore, differences in the Gd amount were found depending on the GBCA used. However, further studies are needed to elucidate such complex interactions, also using other (bio)analytical techniques. T2 - 2nd Annual Conference on Mass Spectrometry Imaging and Integrated Topics, IMSIS-2024 CY - Münster, Germany DA - 09.09.2024 KW - ICP-MS KW - Laser ablation KW - Contrast agent KW - Spheroid KW - Extracellular matrix PY - 2024 AN - OPUS4-61049 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hernandez Garcia, Maria Amparo T1 - Low-cost production of free-form optical components via standard LCD 3D printing for advanced opto-sensing N2 - Nowadays, the use of complex optical elements is increasing also in applications such as miniaturized (bio)chemical opto-sensors. However, this can easily result in considerably high costs, time-consuming fabrication processes and the restricted availability of unconventional optics, which is especially problematic during the development phase of such devices. In this work, we propose LCD 3D printing as an alternative cost-effective technique, which is not only user-friendly but also free of design constrains enabling to fabricate free-form optics. A physical and spectroscopic characterization of six commercially available resins was performed together with the replication of optics and chemical sensing applications as a proof of concept. The optical transparency of the commercial mixtures was evaluated to discriminate the materials optically not suitable for the fabrication of transparent optical elements. Among the six resins, five were considered optimally transparent, with an optical transmittance >85% in the visible spectra range. However, fluorescence analysis of two of these commercial resins, assessed with an excitation-emission matrix (EEM), showed a high autofluorescence in the most common spectral working area of 410–600 nm. Therefore, only three commercial resins were considered for an in-depth evaluation. Ensuring that the refractive index (RI) of the resins complies with that of the most common optical materials, i.e., possesses a RI ~1.5 like polymers such as plexiglass or polycarbonate and glasses such as N-BK7, another important feature is an adequate surface quality of the printed objects. This could be accomplished with a dedicated post-treatment procedure allowing to reach a surface roughness of Rq = 0.07 μm, which agrees well with the values of common glass (Rq = 0.05 μm) and polymer lenses (Rq = 0.075 μm). To demonstrate the suitability of the 3D printed lenses, two different chemical sensors earlier published by us were replicated using the equivalent 3D printed lenses, i.e., a strip test for hydrocarbon detection using a 3D printed aspheric condenser and a microfluidic device for the determination of water chlorination using two cylindrical 3D printed lenses.[1, 2] Independent of the optical material used for the lenses, both assays exhibit similar calibration curves and results (see Figure 1 for one example), suggesting that LCD 3D printing is a suitable technique for the fabrication of free-form optics that allows to design, fabricate and test unconventional optics for miniaturized sensors in a much faster and distinctly less expensive manner. T2 - How to develop a sensor? Academic Approaches vs. Industrial Interests (EU Training School) CY - Kaiserslautern, Germany DA - 18.09.2024 KW - 3D-printing KW - Optics KW - Photopolymerization KW - Rapid prototyping KW - Sensors PY - 2024 AN - OPUS4-61444 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Skłodowska, Anna A1 - Coronel Subia, Hernan Alejandro A1 - Inzunza Araya, Ernesto A1 - Niederleithinger, Ernst T1 - Influence of velocity changes on acoustic emission monitoring of masonry walls under diagonal compression load N2 - Acoustic emission (AE) is a highly sensitive, non-destructive method which has great potential in damage event detection and assessment in masonry structures exposed to e.g., seismic loads. However, the highly heterogenous nature of the masonry structures and their low densities cause high attenuation and distortion of the signal. Localization of the AE events is challenging because the AE waves propagate through various masonry constituents (i.e., bricks and mortar joints) at different velocities. We present an attempt to locate the sources of AE events from the signals recorded during the diagonal compression loading, and analyze the influence of different wave velocities on its accuracy. T2 - 36th Conference of the European Working Group on Acoustic Emission CY - Potsdam, Germany DA - 18.09.2024 KW - Acoustic emission KW - Masonry KW - Compression test PY - 2024 AN - OPUS4-61689 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Asadujjaman, Asad T1 - Endowing nanoparticles with orthogonal functionalities via a core/shell/shell architecture N2 - Dual orthogonal functionalities in a single material is highly desirable in many fields such as bio-imaging, sensing, coating or diagnostic and therapy. However, a precise and controlled approach to prepare two different functionalities is still a challenging task. Herein, we show the simple preparation method for the synthesis of dual-functional hybrid core/shell/shell nanoparticles consisting of a silica core with a fluorescent and a thermoresponsive polymeric layer. Silica core particles were first coated by a fluorescent layer using surface- nitiated reversible addition-fragmentation chain transfer (RAFT) polymerization. The fluorescent silica nanoparticles were then completely enclosed within a switchable protective coating made of thermoresponsive poly(N-isopropylacrylamide) via RAFT polymerization. Thermoresponsive poly(N-isopropylacrylamide) is known to change its properties according to the surroundings temperature in a reversible and controllable way (LCST behavior). The successful preparation of well-defined dual-functional hybrid core/shell/shell nanoparticles was shown by scanning electron microscopy, thermogravimetric analysis and Fourier transform infrared spectroscopy, while their fluorescence and thermoresponsive properties were confirmed by fluorescence spectroscopy and dynamic light scattering measurements, respectively. T2 - Macromolecular Colloquium 2016 CY - Freiburg, Germany DA - 24.02.2016 KW - Polymer KW - thermoresponsive PY - 2016 AN - OPUS4-35473 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ashokkumar, Pichandi T1 - Analytical platform for sugar sensing in commercial beverages using a BODIPY fluorescent probe N2 - The determination of sugar content in beverages is of paramount importance as consumers are very concerned about the quality, sugar uptake and aroma of the beverages. Fluorescent probes with boronic acid receptors are widely used as sugar sensors. However, most of these probes suffer from weak signaling responses and it requires to carry out the assay at pH >8.8. Development of a BODIPY probe functionalized with a boronic acid receptor carrying an adjacent tertiary amino group to create more basic environment and to have enhanced fluorescence response. Integration of the probe with a miniaturized microfluidic system. Quantitative online measurement of sugar content in commercial beverages with high sensitivity. T2 - ANAKON 2015 CY - Graz, Österreich DA - 2015-03-23 PY - 2015 AN - OPUS4-34775 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - X-Ray Spectrometry for In-Situ Detection of Biomolecules T2 - 16th European Conference on Applications of Surface and Interface Analysis (ECASIA 15) CY - Granada, Spain DA - 2015-09-28 PY - 2015 AN - OPUS4-34815 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Climent Terol, Estela T1 - Rapid, sensitive and selective fluorescence sensing device for the determination of the nerve agents Sarin, Soman and Tabun in the gas phase N2 - The organophosphate nerve agents Tabun (GA), Sarin (GB) and Soman (GD) are among the most toxic chemical warfare agents (CWA) known, and exert their biological effects by irreversibly inhibiting acetylcholinesterase enzymes of the human nerve system. The use of these agents in the past century has killed millions of civilians around the world during World Wars I and II, and after that, approximately 40.000 tons of chemical ammunition were dumped into the Baltic Sea, containing ca. 13.000 tons of chemical warfare agents. Since their production, almost all the nations of the world have been strictly avoiding the development and use of CWA, participating in active destruction of CWA stockpiles, especially since the Chemical Weapon Convention (CWC) of 1993. However, CWA have been used in offensive ways against civilian population by terrorists, as for instance in the fatal Tokyo subway terror incident of 1995 or, most recently, against antigovernment demonstrators in Syria in 2013. Due to their higher toxicity and continuous use, it is therefore very important to develop simple and fast detection methods relying on new nerve agent sensing modalities for use in control and inspection. A practically useful fluorescent probe must possess a rapid response and high sensitivity, and shall be implementable into easy-to-use devices for real time detection by untrained personnel. Taking into account this fact, in this work we have synthesized several mesoporous silica materials containing boron–dipyrromethene (BODIPY) moieties for the detection of nerve agents GA, GB and GD in the gas phase. Development of our system indicated that the most potent materials are able to respond to the presence of nerve agent simulants diethyl cyanophosphonate, diethyl chlorophosphate and diisopropyl fluorophosphate, which have to be used in a laboratory setting, yet also for the real nerve agents Sarin, Soman and Tabun, producing a strong quenching of the fluorescence. Furthermore, a portable device for the detection of GA, GB and GD in the gas phase has been prepared for in situ sensing and rapid screening applications, consisting of strips that are able to indicate the targets down to below 1 mgm-3 which is below the LD50 values. T2 - XIII Europtrode Conference CY - Graz, Austria DA - 20.03.2016 KW - nerve agent KW - mesoporous material KW - sensor PY - 2016 AN - OPUS4-35921 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hachenberger, Yves Uwe T1 - Reproduzierbarkeit & Grundlagen der papierbasierten Atmosphärendruck Massenspektrometrie N2 - Die papierbasierte Massenspektrometrie (PB MS) ist ein vielversprechendes Ionisationsverfahren unter atmosphärischen Bedingungen, welches seit 2010 rege Forschungsinteressen erfährt. Die großen Vorteile der PB MS sind die Einfachheit der Umsetzung des Prinzips der Methode, auch bei komplexen Matrizes, und die geringen Kosten des verwendeten Materials. Diese Arbeit enthält systematische Untersuchungen zu verschiedenen Einflussfaktoren der PB MS. Im Vordergrund standen dabei Erkenntnisse zur Reproduzierbarkeit und Standardisierung der Methode. Durch den Vergleich der Zeitverläufe des Ionenstroms und aus den daraus resultierenden Spektren, selbst unter gleichen Bedingungen, zeigte sich, dass die Reproduzierbarkeit einzelner Messverläufe und der daraus erhaltenen Ergebnissen verbessert werden muss. Dies betrifft sowohl Messungen unter gleichen Rahmenbedingungen, als auch solche mit unterschiedlichen experimentellen Aufbauten. Die Reproduzierbarkeit ist somit die aktuelle Herausforderung der PB MS Forschung, die einer universelleren Verwendung als Ionisierungsmethode der Wahl im Wege steht. Die Beschaffenheit, zufällige Anordnung und Ausrichtung der Papierfasern, genauer die Morphologie des Materials selbst spielt dabei eine erhebliche Rolle. Darüber hinaus stützen die in dieser Arbeit erhaltenen Daten die Vermutung, dass der zu Grunde liegende Mechanismus der PB MS auf den Antenneneffekten jener Faserenden beruht. Die zufällige Verteilung der Faserenden ist ein Unsicherheitsfaktor, der durch die Verwendung strukturmodifizierter Papiere ausgeglichen werden soll. Die Unterschiede zwischen den Papieren ergeben sich neben der verschiedenen chemische Modifikation auch aus den morphologischen Details des jeweiligen Papiers. Diese umfassen neben den oben genannten Einflussgrößen auch die Starrheit des Papieres selbst. Es ist durch die Vielzahl der voneinander unabhängigen Einflussgrößen schwierig, allgemeingültige und optimale Konditionen für die PB MS zu entwickeln. Jedoch konnten Einblicke in den Spray- und Ionisationsvorgang gewonnen werden. Als Konsequenz dieser Erkenntnisse konnten verschiedene Möglichkeiten der Signalverstärkung und Verbesserung der Reproduzierbarkeit getestet werden, die vielversprechende Ergebnisse lieferten, jedoch weiterer Optimierung bedürfen. T2 - 49. Jahrestagung der Deutschen Gesellschaft für Massenspektrometrie CY - Hamburg, Germany DA - 28.02.2016 KW - Ambient KW - ToF MS KW - Paper Spray Ionization KW - Atmosphärendruck KW - Flugzeitmassenspektrometrie KW - Papierbasiert KW - Chemisch modifziert KW - Chemical modified PY - 2016 AN - OPUS4-35767 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Climent Terol, Estela T1 - Rapid, sensitive and selective determination of nerve agent simulants in the gas phase employing BODIPY-modified silica materials T2 - MAF 14, 14th Conference on methods and applications of fluorescence CY - Würzburg, Germany DA - 2015-09-13 PY - 2015 AN - OPUS4-34659 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Fluorescent mesoporous silicia materials discriminating Ag(l) and Hg (II) T2 - 25th Congress of the Analytical Chemistry Division of the Italian Chemical Society CY - Trieste, Italien DA - 2015-09-13 PY - 2015 AN - OPUS4-33635 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jakubowski, Norbert T1 - Speciation of Gd Contrast Agents using HILIC-ICP-MS T2 - Analysis of Rare Earth Elements, Methods and Application (AREE 2015) CY - Kleve, Germany DA - 2015-10-05 PY - 2015 AN - OPUS4-34522 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hachenberger, Yves Uwe T1 - Paper spray ionization mass spectrometry using chemical modified paper tips N2 - Since it´s first report in 2010, paper spray ionization mass spectrometry (PSI-MS), has rapidly become a promising ionization method for ambient MS. It combines the simplicity of direct analysis due to chromatographic retention of matrix elements and disposability due to the usage of low-cost materials. As a result the quantification of analytes out of complicated matrices, e.g. as of dried blood spots is possible when internal standards are used. However, on the downside the method exhibits a poor sensitivity and reproducibility. Especially the reproducibility suffers from batch to batch fluctuations in the exact morphology and composition of the used paper. Thus, so far the stability of consecutive measurements varies from tip to tip and batch to batch. This work shows the potentials of chemical modifications of cellulose chromatography paper and their possible use for PSI-MS. The systematic comparison of the obtained data exhibits a clear trend potentially paving the way of possibilities towards a future applicability as a standard routine in analytical chemistry. T2 - 5. Berliner Chemie Symposium CY - Berlin, Germany DA - 12.04.2016 KW - Ambient KW - ToF MS KW - Paper spray ionization KW - Chemical modification KW - Atmosphärendruck KW - Flugzeitmassenspektrometrie KW - Papierbasiert KW - Chemische Modifizierung PY - 2016 AN - OPUS4-35769 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lindner, Uwe T1 - Speciation of Gd contrast agents using HILIC-ICP-MS N2 - Hydrophilic interaction chromatography (HILIC)coupled with inductively coupled plasma mass spectrometry (ICP-MS) were optimised for the direct determination of gadolinium-based contrast agents in tap water. With the speciation method described, tap water samples from the area of Berlin were analysed and for the first time, three Gd species, Gd-BT-DO3A, Gd-DOTA and Gd-BOPTA, were found in tap water samples at concentrations of about 10–20 ng Gd per litre. These are the same Gd species which have been previously detected predominantly in surface waters of the Berlin area. T2 - Anwendertreffen Plasmaspektrometrie CY - Berlin, Germany DA - 22.02.2016 KW - Gadolinium-based contrast agents KW - Hydrophilic interaction chromatography (HILIC) KW - Speciation KW - Inductively coupled plasmamass spectrometry (ICP-MS) KW - Internal standard KW - Berlin tap water PY - 2016 AN - OPUS4-35875 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Carl, Peter T1 - Multiplex suspension array fluorescence immunoassay (SAFIA) for environmental screening of bioactive compounds in wastewater N2 - Due to the demand of monitoring the water quality regarding emerging pollutants, such as drug residues, selective, high-throughput and multi-target analytical methods must be established. On the one hand, the influence of sewage on natural surface waters must be routinely monitored. On the other hand, estimation of removal efficiencies of pollutants, such as drug residues, is in the focus of industrial and public wastewater treatment. Immunoassays, such as ELISA, offer the possibility to be highly sensitive and selective due to the high target affine and specific recognition of antibodies to target molecules. Batch-wise processing in microtiter plates allow the necessary high-throughput, but only a single analyte can be determined within one measurement. To overcome these disadvantages, we developed a four-plex micro-bead based flow cytometric assay, which is adaptable for the microtiter plate format. The modular and self-prepared bead support consists of polystyrene-core-silica-shell particles. While the polystyrene core is used for encoding, by introducing different amounts of fluorescent dyes, the silica-shell creates a solid-support for the immunoassay: The target analytes, three drugs, carbamazepine, diclofenac and caffeine and the f ecal marker isolithocholic acid are covalently coupled to amino-groups on the surface via NHS-chemistry. A competitive immunoassay is subsequently conducted in a simple mix-and-read procedure. Finally, we could use SAFIA to assess the influent of treated and untreated waste water on the Douro river estuary in Portugal. The results of the analysis are comparable to ELISA. However, measurements could be carried out in 25% the time of analysis. T2 - BAM - BfR-Seminar Scientific exchange between: BAM und Abteilung „Chemikalien und Produktsicherheit" (Abteilung 7) des BfR CY - Berlin, Germany DA - 15.02.2018 KW - Bead based assay KW - Fluorescence KW - Emerging pollutants KW - Environment KW - Flow cytometry PY - 2017 AN - OPUS4-44337 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Langenhan, Jennifer T1 - PEGs in the human body: where they are coming from and what they are doing N2 - The general understanding has been that PEGs are biologically inert, meaning they pass the human body without any relevant reaction with anything. But recent studies have shown that migth not be correct. Here a retrospective analysis of LC-MS data was performed to determine correlations between blood PEG levels in humans and different experimental factors. T2 - Make and Measure 2021 CY - Online meeting DA - 16.09.2021 KW - PEG KW - Polyethylene glycole KW - Retrospective analysis PY - 2021 AN - OPUS4-53391 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bertin, Annabelle T1 - Thermoresponsive fluorescent hybrid core-shell-shell nanoparticles T2 - 14th Biennal International Bayreuth Polymer Symposium CY - Bayreuth, Germany DA - 2015-09-20 PY - 2015 AN - OPUS4-34457 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wagner, Sabine T1 - On the Influence of Counter-ions on the Recognition Behavior of Molecularly Imprinted Polymers against Amino Acids T2 - Adlershofer Forschungsforum CY - Berlin Germany DA - 2014-11-11 PY - 2014 AN - OPUS4-33748 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfeifer, Jens T1 - Application of Plasmasource Spectrometry for the characterization of pure zinc matrices T2 - European Winter Conference on Plasma Spectrochemistry CY - Münster, Germany DA - 2015-02-22 PY - 2015 AN - OPUS4-32568 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Climent Terol, Estela T1 - Trace Hg2+ Sensing and Efficient Hg2+ Scavenging with Hybrid Mesoporous Silica Materials Incorporating Fluorescent Probes N2 - Mercury is a highly toxic, bioaccumulative heavy metal that can cause serious health problems even at low concentrations, thus presenting a major threat for the natural water resources. Its high toxicity entails low MCL values (e.g., 2 ppb),[1] requiring at best materials that cannot only selectively detect Hg2+ at trace levels but also effectively remove it. Various such dual functional materials have been developed in the past.[2] However, most of these approaches have limitations with respect to sensitivity and selectivity, show slow responses or require complex instrumentation. Here we report the development of mesoporous silica materials containing boron-dipyrromethene (BODIPY) probes in their pore systems that allow for the sensitive and selective detection of Hg2+ in water via fluorescence enhancement while at the same time efficiently scavenging the toxic heavy metal. For this purpose, we adopted an earlier strategy[3] and prepared a refined BODIPY probe which was directly adsorbed on the surface of SBA-15-type silica having been functionalized with different organic moieties. Of all the materials tested, SBA-15 expressing propyl chains responded best, allowing for an excellent discrimination against Ag+ and other metals as well as a high sensitivity for Hg2+ with a limit of detection of 1.5 ppb. The performance of the hybrids with regard to sensing and scavenging was validated by ICP-OES measurements before and after exposure of the materials to Hg2+-containing solutions, allowing retentions of 0.07 g Hg2+ g solid-1. Control studies revealed that while the fluorescent probe is responsible for the very sensitive indication at low Hg2+ concentrations, the majority of the toxic metal ion is scavenged at the walls of the silica material. Current work is directed at the incorporation of these sensor particles into filtration systems for monitoring purposes. T2 - 12. Dresdner Sensor-Symposium CY - Dresden, Germany DA - 2015-12-07 PY - 2015 AN - OPUS4-35081 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sarma, Dominik T1 - Preparation of polystyrene@silica core-shell particles for suspension arrays N2 - Suspension arrays play a major role in recent developments of multiplexed proteomic and genomic assays. Using for instance cytometry, this microparticle-based analytical method features several advantages compared with flat array technologies such as facile fabrication of the analytical platform, high analytical surface area, fast reaction kinetics and a high analytical throughput. Since the first immunoassay for soluble antigens employing flow cytometry in 1982 by Lisi et al., enormous improvements were made concerning the assay chemistry and multiplexing capabilities of this technique. More recently, bead-based applications in microfluidic devices were studied which show promising abilities in point-of-need testing technologies. However, for optimum performance highly mono-disperse and low-density particles are required to guarantee proper correlation and to prevent sedimentation. Usually polymeric particles, such as polystyrene and PMMA spheres, fulfill these requirements and offer good accessibility in conventionally equipped laboratories. Major limitations of these beads however reside with the possibilities for post-modification of the surface and the sensitivity of the polymeric network to the presence of (traces of) organic solvents. A way to circumvent these issues while retaining the key requirements on applications in suspension arrays is the coating of the polymer particles with a silica shell. This strategy not only increases the thermal and chemical stability but facilitates further tailoring of the surface properties with a large variety of commercially available silanes. This contribution presents a facile synthetic approach to highly mono-disperse polystyrene@silica core-shell particles, bearing simple means to control the size of the particles and the silica shell thickness. Main parameters such as surface area and shell structure are discussed in correlation to analytical benefits of the particles. For the latter, standard flow cytometry applications with (bio)analytical suspension assays are performed. T2 - 4th International Colloids Conference: Surface Design & Engineering CY - Madrid, Spain DA - 2014-06-15 PY - 2014 AN - OPUS4-34824 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bierstedt, Andreas T1 - Laser Desorption Strategies for Ambient Molecular Mass Spectrometry N2 - Ambient mass spectrometry on a molecular level has become an indispensable analytical technique for the detection and characterization of organic molecules of different type, composition and size. Novel strategies, as well as fundamental and mechanistic research, has been successfully employed to obtain new hyphenated interrogation schemes, including laser ablation dielectric barrier discharge ionization (LA-DBDI) and laser ablation droplet ionization mass spectrometry (LDI-MS). To approach more complex analytical problems, development yielded in a hyphenated instrument using one shared high repetition rate laser for laser desorption mass spectrometry coupled to dielectric barrier discharge postionization and Raman scattering. Raman spectroscopy displays structural information. Mass spectrometry allows for an accurate determination of the molecular mass. Thus, a combination of LA-MS and optical spectroscopy could be highly beneficial for an unambiguous identification of complicated analytical samples. Acoustic levitation of droplets has matured to a powerful tool for containerless handling of microliter samples. In microfluidic systems the absence of confining walls is greatly beneficial because it can effectively suppress agglomeration and contamination of the sample originating at the liquid/solid interfaces. Here we present a set-up, utilizing the ?? = 2.94 µm output of a diode pumped Er:YAG laser for excitation, opening laser spray ionization to any OH-group containing solvents. To obtain deeper insights into ongoing laser desorption processes mechanistic studies have been carried out utilizing shadowgraphy experiments. Those nicely show the evaporation plume and its spatial distribution during a time period of up to 1 ms. Achieved results allow for further sensitivity improvement via a better ionization efficiency and a better subsequent ion transmission. T2 - Adlershofer Forschungsforum 2015 CY - Berlin, Deutschland DA - 2015-11-11 PY - 2015 AN - OPUS4-34948 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Streeck, C. T1 - Reference-free quantification of functional groups on surfaces for bioanalytical applications by total reflection X-ray fluorescence analysis N2 - For the development of biosensors or microarrays in biotechnology functionalized surfaces e.g. aminated glass surfaces can be used. Knowledge of the quantity of primary reactive groups on such surfaces is indispensable for a defined secondary modification with commonly biochemical entities, eventually resulting in more reliably tailored surfaces with better controlled properties. Here, we investigated aminated glass surfaces with varying densities of amino groups prepared from binary mixtures of silanes. Subsequent labeling of the amino groups with a fluorophore containing a high number of fluorine atoms allows complementary quantification of the organic groups by optical fluorescence spectroscopy, X-ray Photoelectron Spectroscopy (XPS) and traceable Total-Reflection X-ray Fluorescence analysis (TXRF). Reference-free TXRF with soft X-ray excitation determines the mass deposition of elements such as carbon, nitrogen and fluorine, yielding the areal density of primary functional groups on the surface. The TXRF-measurements were performed at the PTB beamline for undulator radiation at the electron storage ring BESSY II which provides monochromatic soft X-rays with high spectral purity and photon flux. This approach allows the calibration of optical fluorescence spectroscopy and XPS to deliver traceable quantitative data. T2 - European Conference on X-Ray Spectrometry (EXRS-2014) CY - Bologna, Italien DA - 2014-06-15 PY - 2014 AN - OPUS4-34664 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nutsch, A. T1 - Synchrotron Light Probing the Liquid Solid Interface for Immobilized Biomolecule T2 - Seventh Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 2015-12-10 PY - 2015 AN - OPUS4-35211 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Carl, Peter T1 - A bead suspension array for measuring emerging pollutants and anthropogenic markers in wastewater N2 - Background: The assessment of water quality demands for high-throughput and multi-target compatible analytical methods. On the one hand, the influence of sewage on natural surface waters must be routinely monitored - according to the European Water Framework Directive. On the other hand, estimation of removal efficiencies of pollutants, such as drug residues, is in the focus of industrial and public wastewater treatment. Immunoassays, such as ELISA, are often applied in this area owing to their cost-efficiency and high-throughput capability. However, it is only possible to measure a single analyte in one measurement. In contrast, array technology is capable for measuring multiple substances in parallel. Here we present a four-plex bead-based flow cytometric assay for measuring three drugs (carbamazepine, an anti-epileptic drug, diclofenac, an antiphlogistic and caffeine, a psychoactive substance) and the bile acid isolithocholic acid, which is proposed to be used as a fecal marker. The drugs can be detected from 1 to 4 µg/L and the bile acid can be detected up to 72 µg/L in wastewater, requiring a highly sensitive detection method. Methods: We use core-shell particles as the spherical platform, consisting of a polystyrene core and a silica shell. Such beads can easily be encoded with an organic fluorophore in the core and functionalized with amino groups on the silica shell surface for creating binding sites for antibodies: Therefore, the marker substances are bound to the amino groups via NHS chemistry. The hybrid particles were synthesized in house. Polystyrene was chosen as core material because of its low density and high refractive index, both important requirements for the use in suspension arrays. Easy surface modifications using silane chemistry are accessible on the silica shell. For the determination of the pollutants, the beads are incubated with a mixture of the analyte-specific antibodies. The antibodies undergo a competitive reaction to bind the immobilized molecules on the surface of the beads or the free analyte in the solution, respectively. Bound antibodies can then be visualized via fluorophore-labelled secondary antibodies. For read-out a flow cytometer is used to virtually separate the different dye encoded beads and to measure the resulting Signal intensity of the immunoassay. A four-parametric function was used as calibration curve. Results: In order to obtain highly selective binding of the antibodies, we investigated different types of silica shell surface modifications to overcome unspecific binding, finding that a PEG-modified surface is suitable to support our immunoassay format. Multiplexed small molecule detection can therefore be realized in a simple mix and read procedure without washing steps. Conclusion: We presented a multiplexing suspension array for the detection of four marker substances in wastewater samples, based on an indirect immunoassay format with polystyrene core-silica shell microbeads. The resulting multiplexing assay is appropriate to detect the marker substances in the low µg/L range. Therefore, wastewater samples can be measured without further preconcentration. T2 - Innovations Forum Senftenberg 2016 - Enabling Technologies for Multiparameter Analytics CY - Senftenberg, Germany DA - 01.06.2017 KW - Bead-based assay KW - Small-molecule sensors KW - Immunoassay KW - Anthropogenic markers KW - Wastewater PY - 2016 AN - OPUS4-36752 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bolz, Axel T1 - Paper-based SERS test strips N2 - For the non-destructive chemical analysis of organic compounds, several different methods such as NMR, UV-vis absorption, IR, Raman, or fluorescence spectroscopy are available. However, all available methods have some restrictions such as the necessity of a large sample amount, interferences in the presence of water, or overlapping signals from the analytes or matrix. Surface enhanced Raman scattering (SERS) allows to observe analytes directly without labelling in low concentrations in aqueous solutions and to identify them by their spectral fingerprint. Therefore, in this work we use SERS as a detection method for different analytes in low concentrations in combination with paper-based test strips as SERS substrates and for sample preparation. We present a spray method for the preparation of SERS test stripes.[1] With this spray method, nanoparticle solution was deposited on cellulose and glass fibre paper as SERS substrate. The prepared paper-based test strips were tested with classical SERS reporter molecules, e.g. rhodamine 6G, 4-aminothiophenol, and adenine. For the quantification of analytes, highly reproducible signal intensities are necessary, which can be realized with the test strips in acceptable quality. Moreover, employing intensity vs concentration calibration for the analytes, data analysis revealed a behaviour that was best described by a Langmuir isotherm, stressing the strong distance dependence of the SERS effect. For an easier identification of analytes in a mixture of compounds, the paper-based test strips were functionalised with hydrophobic barriers by wax printing. With these microfluidic paper-based analytical devices (µPAD) the sample mixture can be separated by the chromatographic effects of the paper and the different analytes can be separately detected and identified by SERS. [1] A. Bolz, U. Panne, K. Rurack, M. Buurman, Glass fibre paper-based test strips for sensitive SERS sensing, Anal. Methods, 2016, 8, 1313-1318. T2 - International RamanFest 2016 CY - Berlin, Germany DA - 19.05.2016 KW - SERS KW - Raman KW - Paper PY - 2016 AN - OPUS4-36726 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kislenko, Evgeniia T1 - Molecularly Imprinted Polymers for Fluorescence Sensing of the Herbecide 2,4-D N2 - Application of pesticides is ubiquitous to better manage agricultural production. However, most of these compounds are harmful or toxic for humans and highly persistent in the environment, even in the crops themselves. Therefore, the rapid and reliable monitoring of pesticide residues is a very important area of environmental analysis. If conducted directly in the field, the use of fluorescence sensing methods is particularly attractive, because they allow for sensitive and rapid analyses while being very versatile. Recently, molecularly imprinted polymers (MIPs) have emerged as promising candidates for the primary sensing phase. Their robustness, low price and tunability render them an attractive alternative to more conventional biosensors based on antibodies. At present, a number of MIP formats are available besides the initial bulk polymer monoliths. Core/shell micro- and nanoparticles are especially suitable for sensor applications. A thin shell provides many advantages compared to a bulk polymer, such as fast diffusion of analyte, homogeneity of binding cavities and a higher number of binding sites closer to the surface. A strategy for sensory MIP synthesis is to introduce the fluorophore covalently into the polymer layer. The fluorescent probe monomer may thus consist of a fluorophore unit, a polymerizable unit and a recognition unit. One of the issues in targeting acidic pesticides such as 2,4-D is the fact that usually their deprotonated form is used for imprinting in organic solvents, commonly as the tetraalkylammonium salt. This approach harbours drawbacks when it comes to analytical rebinding, because real samples seldom contain such counterions. In our group, we have thus developed a new fluorescent probe monomer containing the 2-aminopyridine moiety, which forms strong enough intermolecular hydrogen bonds with the carboxylic acid group of neat 2,4-D. During a titration of the probe monomer with the analyte, hydrogen bond formation is indicated by spectral shifts and fluorescence enhancement. Crystallography studies verified complex formation. The higher fluorometric response of the core-shell MIP compared to a non-imprinted control polymer proved successful imprinting. Here, we will discuss the pros and cons of neutral molecule vs. salt imprinting, potentially expanding the possibilities of fluorescent sensory MIPs. T2 - MIP2018 CY - Hebrew University, Jerusalem, Israel DA - 24.06.2018 KW - Molecularly imprinted polymers KW - 2,4-D KW - Fluorescence KW - Sensing PY - 2018 AN - OPUS4-45598 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mansurova, Maria T1 - Embedded Fluorescence-Based Optical System for the Detection of Total Petroleum Hydrocarbons in Water and Soil N2 - Contamination of natural bodies of water with oil and lubricants (or generally, hydrocarbon derivatives such as petrol, fuel and others) is a commonly found phenomenon around the world due to the extensive production, transfer and use of fossil fuels. In this work, we develop a simple system for the on-field detection of total petroleum hydrocarbons (TPH) in water and soil. The test is based on fluorescence emission of a 4-dimethylamino-4′-nitrostilbene derivative (4-DNS-OH). This fluorescent molecular rotor is embedded in a hydrophobic polymeric matrix (PVDF), avoiding interactions with water and providing a robust support for use in test-strip fashion. For the fluorescence detection a portable sensor device was developed, featuring two excitation LEDs, a micro-spectrometer and Bluetooth control. A limit of detection of at least 6 ppm of TPH in water was demonstrated. T2 - Europtrode 2018 CY - Naples, Italy DA - 25.03.2018 KW - Water KW - Fluorescence KW - Spectrocube KW - Rapid test KW - Oil PY - 2018 AN - OPUS4-45605 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gawlitza, Kornelia T1 - Mesoporous silica materials incorporating BODIPY dyes as a versatile system for the trace detection of hazardous chemical species N2 - There is significant contamination of our water resources and an accelerating accumulation of hazardous species in the aquatic biosphere. Whether for instance mercury as a contaminant constantly released from a multitude of industrial processes or chemical warfare agents (CWAs) such as Tabun (GA), Sarin (GB) or Soman (GD) as highly toxic remnants of World War II, released from dumped containers upon their progressive corrosion, are concerned such hazards can cause serious problems to human health even at low concentration and monitoring them becomes increasingly essential. Conclusively, it is necessary to develop sensors for such hazards that combine high sensitivity, good selectivity, fast responses and can dispense with complex instrumentation. Here, we present SBA-15-type mesoporous silica materials containing boron–dipyrromethene (BODIPY) probes in their pore systems that allow for the sensitive and selective detection of the two target analytes CWAs and Hg2+ in natural waters via a change in the optical properties. In case of Hg2+, the BODIPY dye is directly adsorbed on the (inner and outer) surface of the highly porous material and coordinates the metal ion, leading to an enhancement of fluorescence with a limit of detection (LOD) of 15 ppt. Using the same silica material but incorporating a covalently attached BODIPY dye, the CWAs GA, GD and GB can be detected via fluorescence quenching induced by an intraannular cyclization. The obtained LOD in natural waters is in the pM range and hence below the Maximum Permissible Concentrations for CWAs in drinking water. Aspects of system design as well as application in water and food analysis (fish extracts) will be presented. T2 - Rapid Methods Europe (RME) 2016 CY - Amsterdam, The Netherlands DA - 07.11.2016 KW - Mesoporous silica materials KW - Sensor materials KW - Fluorescence sensors PY - 2016 AN - OPUS4-38182 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Noordmann, J. T1 - Gravimetric preparation and characterization of a primary reference solution of molybdenum N2 - Gravimetrically prepared mono-elemental reference solutions having a well-known mass fraction of approximately 1 g/kg define the very basis of virtually all measurements in inorganic analysis. Serving as the starting materials of all standard/calibration solutions, they link virtually all measurements of inorganic analytes to the purity of the solid materials they were prepared from. In case these solid materials are characterized comprehensively with respect to their purity, this link also establishes direct metrological traceability to The International System of Unit. Within the framework of the European Metrology Research Programme (EMRP), in the Joint Research Project called SIB09 Primary standards for challenging elements, a reference solution of molybdenum was prepared directly from the respective metal with a relative expanded uncertainty associated with the mass fraction of Urel(w) < 0.05 %. A highly accurate and precise ICP OES and MC-ICP-MS method was developed to assist with the preparation and as a dissemination tool. T2 - ANACON CY - Graz, Austria DA - 23.03.2015 KW - Metrology KW - Primary standards KW - Mo PY - 2015 AN - OPUS4-38038 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bartelmeß, Jürgen T1 - Highly substituted boron dipyrromethene (BODIPY) fluorophores for hosting benzene and its derivatives – A Sensing Approach N2 - BODIPY fluorophores are popular functional dyes in a multitude of fields in chemistry, physics, and materials sciences due to their excellent properties such as a good photostability, high fluorescence quantum yields, and almost unlimited possibilities for tailoring their properties by chemical functionalization. In sensing applications, BODIPY dyes are widely employed. In this work, we present an approach for creating a BODIPY-based pocket-like structure for the recognition of volatile organic compounds (VOC) such as benzene and its derivatives. This may lead to the development of sensing devices for this class of compounds, which receive special attention by environmental chemists and regulatory authorities due to severe adverse effects on humans in particular and the environment in general. The low reactivity of benzene-derived hazardous compounds is thereby a major fact that has to be taken into consideration. While for other reactive gaseous compounds, fluorophore-based detection performance is achieved by the chemical modification of the fluorophore itself, e.g. by bond cleavage, addition, oxidation or reduction reactions; this is not possible for many VOCs. Several metal complexes were described for the sensing of benzene and its derivatives, but no organic dyes such as BODIPYs are known with these capabilities. Our unique concept towards BODIPY-based molecules acting as scavengers for VOCs is supposed to overcome the problem of benzene’s low reactivity by enforcing π-π-interactions between the fluorophore and the volatile aromatic analyte in pocket-like molecular structures. T2 - 25. Lecture Conference on Photochemistry CY - Jena, Germany DA - 26.09.2016 KW - KonSens KW - Benzene sensor KW - Fluorescence spectroscopy PY - 2016 AN - OPUS4-37826 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wagner, Sabine T1 - Integration of microspheres coated with fluorescent molecularly imprinted polymers with a fiber optic array for the detection of antibiotics N2 - The widespread use of antibiotics in livestock farming leads to trace residues in food products and wastewater, potentially entailing antimicrobial resistance in food-borne pathogens. The determination of antibiotics in aqueous environments and foodstuff is thus of major concern. Analytical assays based on molecularly imprinted polymers (MIPs) have emerged as a valuable tool in this field due to the low production costs, stability, format adaptability and the possibility to imprint and thus their ability to recognize a wide variety of target analytes. With regard to optical sensing technologies, however, MIPs have only been used in considerably few applications, especially in fluorescence sensors. This limitation is basically due to the fact that the incorporation of a fluorescently responding moiety into a polymer matrix is challenging. One way to overcome this limitation is to use tailor-made fluorescent indicator monomers for direct transfer of the binding event into an optical signal. If such a monomer is integrated into a thin MIP-shell on microspheres such core/shell particles can be readily used in advanced multiplexing sensory fiber-optic microarrays. Here, we propose such a fiber-optic microarray based on fluorescent MIP microspheres for antibiotics. The binding behavior and the selectivity of a microarray using these MIP were examined and compared with a non-imprinted polymer (NIP) control, employing the target molecules and other structurally closely related antibiotics. T2 - Europt(r)ode XIII CY - Graz, Austria DA - 20.03.2016 KW - Molecularly imprinted polymers KW - Fiber-optic microarray KW - Fluorescence PY - 2016 AN - OPUS4-37294 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Certification of the mass fractions of trace elements in a medium purity graphite reference material N2 - The increasing application of graphite materials in various fields of technology and science enhances the demand for strictly controlled properties which are often directly correlated to the contents of trace element impurities. Therefore, the availability of powerful, rapid and reliable analytical methods for the determination of trace impurities is essential for process and quality control. Certified reference materials, indispensable for the development and validation of appropriate trace analytical methods for the characterization of special purity graphite materials are still lacking. Therefore, BAM in co-operation with the working group “Special Materials” of the committee of chemists of GDMB (Gesellschaft der Metallurgen und Bergleute e.V.) certified an industrially sourced graphite material with genuine elemental impurities. The candidate material was a commercial product (NBG 18) taken from the customary production line of the producer SGL CARBON, Chedde (France). The homogeneity of the powdered material was assessed by means of ETV-ICP OES and DC Arc-OES. Certification of the candidate reference material was based on an inter-laboratory comparison involving 17 expert laboratories from Germany, France, Slovenia, USA, South Africa. A variety of different mineralization, digestion, leaching, fusion and combustion techniques prior to ICP OES and photometry, methods without sample preparation (INAA, k0-INAA) as well as typical solid sampling methods (ETV-ICP OES, ETV-ICP-MS, SS-ET AAS, DC Arc-OES, MF-DC Arc-OES) were used to characterise the material. Certified mass fractions and their expanded uncertainties (k = 2) were assigned for 27 elements (Al, B, Ba, Be, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, S, Si, Sr, Ti, V, W, Y, Zn, Zr), ranging from (0.00050 ± 0.00027) mg/kg for Be to (41 ± 6) mg/kg for Si. Additionally, informative values are given for the: trace element contents of Ag, As, Au, Bi, Cd, Cs, Dy, Eu, Ga, Gd, Hg, In, La, Nb, Rb, Re, Rh, Sb, Sc, Se, Sm, Sn, Ta, Tb, Te, Th, U; method specific values obtained by ETV-ICP OES (BETV and SiETV) and the ash content of the material. The certified material “BAM-S009 Medium Purity Graphite Powder” is available for purchase from BAM. T2 - ESAS & CANAS 2018 CY - Berlin, Germany DA - 20.03.2018 KW - Graphite KW - Certification KW - Trace elements KW - Reference material PY - 2018 AN - OPUS4-44775 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sternbaek, L. T1 - Macrophage-uptake of sialic acid-targeted molecularly imprinted polymers (SA-MIPs) N2 - Sialic acid (SA) is a cell surface glycan, which has a decisive role in many cell activities including differentiation, proliferation, and the immune response. The amount of SA has been found to correlate with cancer, with an upregulation on more aggressive cancers. Therefore, there is a great interest in developing methods for detection of SA on cancer cells. We are screening SA on cancer cell lines by using fluorescent molecularly imprinted polymers, SA-MIPs. Macrophages, which evolve from mono-cytes, are well known for their extraordinary ability to phagocytose foreign objects. This could lead to the hypothesis that the SA-MIPs can be recognized by macrophages as foreign object; thus leading to internalization and potentially degradation. We have demonstrated that SA-MIPs can be detected after incubation with the RAW macrophage cells, with increasing fluorescence over time. The microscopy analysis shows that the RAW cells ingest the SA-MIP particles. This information is important when planning to use SA-MIPs in future in vivo applications. T2 - 1st National Meeting of the Swedish Chemical Society CY - Lund University, Sweden DA - 17.06.2018 KW - Sialic acid KW - MIPs KW - Macrophages PY - 2018 AN - OPUS4-45421 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Agudo Jácome, Leonardo T1 - 3D reconstruction, visualization and quantification of dislocations from TEM stereo-pairs N2 - A wide range of properties in crystalline materials is affected by the presence of dislocations, the carriers of plastic deformation. Dislocations can be thought of as filiform structures, characterized by geometrical factors such as their Burgers vector, slip plane, length per unit volume (dislocation density) and line direction. In technical materials such as functional and structural alloys, as well as in minerals, the understanding of bulk deformation driven by dislocation activity is of paramount importance, and thus also the techniques that allow its characterization. Since decades, diffraction contrast in the transmission electron microscope (TEM) is widely implemented to image and describe two-dimensional (2D) projections of dislocation substructures in thin foils [1]. Recently, the use of electron tomography was applied for the first time to fully reconstruct a 3D dislocation network in a GaN epilayer [2]. Although this latter technique has gained popularity, it usually requires an elaborate experimental setup, as well as sophisticated image post-processing methods for a successful reconstruction. Stereoscopic methods in the TEM also have traditionally allowed the three-dimensional (3D) observation of dislocations [e. g. 3]. For this purpose, the same region of a TEM foil is imaged using the same diffraction vector with two beam directions slightly tilted from each other. Subsequently, the pair of images is observed with help of stereo-viewers or 3D glasses. Based on this principle, a system based on a special hardware and software combination was developed for segmentation and analysis of stereomicroscopy data in biological research, and it was also used to analyze simple dislocation structures [4]. In the present contribution a simple software tool is introduced, which has been developed to reconstruct, visualize and quantify dislocation substructures in the thicker regions of electron-transparent foils. A special focus is set on the use of scanning (S)TEM for its implementation. As depicted in Figure 1, the tool is based on the separate tracing of dislocation line segments on both images of a stereo-pair. The points 1, 2 and 3 are marked on the images viewed by the left and right eyes (Figures 1a and b, respectively), showing an relative displacement Δx on the superimposed images in the anaglyph of Figure 1c. This Δx is given by the point’s depth Δh and by the stereo-angle ϑ, as shown in Figure 1d. By knowing the beam direction for the left and right images (BL and BR, respectively), ϑ can be determined, and hence also Δh. Once the depth information from all traced nodes is gained, a reconstruction is made (Figure 1e) where the line length can directly be read from the tool’s interface. The setup is merely geometrical and only needs the relative tilt between both images, the direction of the tilt axis and the image calibration, thus allowing asymmetrical tilts with respect to the foil normal. The foil thickness is measured directly from the endings of the dislocations on the bottom and top surfaces of the TEM foil, and is determined as t ~ 370 nm for the region in Figure 1. With t, the volume is in Figure 1e is also known, and the total dislocation density of the region is calculated as ρt = 44.4 x 1012 m∙m-3. It is clear from Figure 1 that in the Ni-base superalloy presented here, the dislocation substructures are highly localized towards the interface between the two phases of which the microstructure is composed, γ and γ’ (labeled in Figure 1a). The reconstructed model allows a separation of the dislocation densities within the γ and the γ’ phases and at their interface, which would be rather difficult by using common methods such as the one proposed by Ham [5]. Thus the partial dislocation densities are measured as ργ = 1.7 x 1012 m∙m-3, ργ’ = 2.7 x 1012 m∙m-3 and ργ/γ’ = 40.0 x 1012 m∙m-3. The tool also incorporates the knowledge of the crystallographic positions at the two tilts to enable plotting the line segment orientations. One can chose to display the resulting line directions as an interactive table; as an additional spherical spatial graph, where all lines extend from the center of a sphere; as a 2D plot of the spherical coordinates θ and φ; or as points plotted on a stereographic projection. Thus, a simple software tool has been developed that allows the reconstruction, visualization and quantification of foil thickness, localized dislocation densities (or other filiform substructures) and orientations based on only one stereo-pair T2 - Microscopy and Microanalysis 2016 CY - Columbus, OH, USA DA - 24.06.2016 KW - Dislocation KW - Diffraction contrast KW - 3D reconstruction KW - Stereoscopy KW - Scanning transmission electron microscopy PY - 2016 AN - OPUS4-39278 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Asadujjaman, Asad T1 - Temperature switches “on” and “off” nanoparticle fluorescence in a core/shell/shell architecture N2 - Fluorescent nanoparticles that light “on/off” by applying external stimuli are of particular interest in the fields of sensing, diagnostics, photonics, protective coatings and microfluidics. The current challenge for these materials is for instance to combine fluorescence and its response to a stimulus such as temperature in a precise manner. Here we present such a system based on a core/shell/shell architecture consisting of a silica core with a fluorescent layer and a thermoresponsive shell. In this work the silica core nanoparticles were first coated with a fluorescent shell using surface initiated reversible addition-fragmentation chain transfer (RAFT) polymerization. The fluorescent nanoparticles were then completely engulfed by a switchable protective coating made of thermoresponsive poly(N-isopropylacrylamide). The fluorescence of the nanoparticles could be “switched on” at room temperature and “switched off” with increasing environmental temperature because of the presence of the thermoresponsive layer. Insights into this phenomenon will be given based on temperature dependent fluorescence measurements and dynamic light scattering. T2 - Makromolecular Konferenz CY - Freiburg, Germany DA - 15.02.2017 KW - Thermoresponsive polymers KW - Sensors KW - Core/Shell/Shell PY - 2017 AN - OPUS4-39230 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kraus, Werner T1 - Fluorinated Boron-dipyrromethen (BODIPY) Structures for Surface Analysis T2 - 21. Jahrestagung der deutschen Gesellschaft für Kristallographie CY - Freiberg, Germany DA - 2013-03-19 PY - 2013 AN - OPUS4-27800 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sarma, Dominik T1 - Preparation of hybrid particle architectures for single microparticle-based detection in suspension arrays using FRET T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27844 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dietrich, Paul T1 - Optimization of carbohydrate microarray performances T2 - Bunsentagung 2010 "Interfacial Systems Chemistry: Out of the Vacuumm, Through the Liquid, Into the Cell" CY - Bielefeld, Germany DA - 2010-05-13 PY - 2010 AN - OPUS4-21366 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wan, Wei T1 - Assessing the FRET Acceptor Potential of Various BODIPY Dyes for Europium as the FRET Donor T2 - International Bunsen Discussion Meeting on Förster Resonance Energy Transfer in Life Sciences CY - Göttingen, Germany DA - 2011-03-27 PY - 2011 AN - OPUS4-23937 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wan, Wei T1 - Hydrogen Bonding vs. Deprotonation: Binding of a Chromogenic Functional Monomer towards a Template in Molecular Imprinting Polymerization T2 - Affinity 2011 CY - Tavira, Portugal DA - 2011-06-16 PY - 2011 AN - OPUS4-24007 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Implementing Signal Amplification Features with Gated Mesoporous Sensory Hybrids for Methymercury Determination T2 - Hybrid Materials 2011 CY - Strasbourg, France DA - 2011-03-03 PY - 2011 AN - OPUS4-23935 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wagner, Ricarda T1 - Targeting biological and environmental analytes using imprinted chromogenic or fluorgenic receptors T2 - 2. Junges Chemie Symposium Ruhr CY - Essen, Germany DA - 2011-09-22 PY - 2011 AN - OPUS4-24699 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hecht, Mandy T1 - Development and Characterization of a Photostable Boron-dipyrromethene Dye as a Versatile Probe of the Analysis of Surface Functional Groups T2 - Nanocon2012 CY - Brno, Czech Republic DA - 2012-10-23 PY - 2012 AN - OPUS4-26848 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fischer, Tobias T1 - Development of a dual XPS and Fluorescence Label for the Analysis of Surface Amino Groups T2 - ThGOT, 8. Thementage Grenz und Oberflächentechnik CY - Leipzig, Germany DA - 2012-09-04 PY - 2012 AN - OPUS4-26850 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kronenberg, Linda T1 - Gold-catalyzed Cycloisomerization of Flourinated Allenes: Application in BODIPY-Synthesis T2 - 6. Tag der Chemie und Absolventenfeier CY - Dortmund, Germany DA - 2013-02-01 PY - 2013 AN - OPUS4-27850 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wan, Wei T1 - Direct Anion Sensing with Amplified Flourescence Using Moleculary Imprinted Core-Shell Nanoparticles T2 - 8. Deutsches BioSensor Symposium CY - Wildau, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-27846 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fischer, Tobias T1 - Quantifizierung von Oberflächenaminogruppen mithilfe eines dualen XSP- und Fluoreszenzlabel T2 - 8. Deutsches BioSensor Symposium CY - Wildau, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-27848 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sarma, Dominik T1 - Preparation of core-shell microparticles for single particle detection in suspension arrays T2 - 8. Deutsches BioSensor Symposium CY - Wildau, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-27845 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fischer, Tobias T1 - Towards Quantitaive Surface Amino Group Analysis with One Combined Flourescence and XPS Label T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27852 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wan, Wei T1 - Flourescent MIP sensors: broadening the scope of molecularly imprinted polymers T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27849 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lindner, Uwe T1 - HILIC-ICP-MS Speziation of Gadolinium containing contrast agents in surface water samples and plants T2 - 46. Jahrestagung der Deutschen Gesellschaft für Massenspektrometrie CY - Berlin, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-27975 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Test strip-based fluorescence detection of fluoride in aqueous media with a BODIPY-linked hydrogen bonding receptor T2 - International Conference on Photochemistry (ICP 2013) CY - Leuven, Belgium DA - 2013-07-21 PY - 2013 AN - OPUS4-28947 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hecht, Mandy T1 - A highly flourescent pH sensing membrane for the alkaline pH T2 - 8. Deutsches BioSensor Symposium CY - Wildau, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-27847 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nutsch, A. T1 - Traceable Quantitative Surface Chemical Analysis for Industrial Applications T2 - 9th International Nanotechnology Conference on Communication and Cooperation CY - Berlin, Germany DA - 2013-05-14 PY - 2013 AN - OPUS4-28950 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Preparation of hybrid particle architectures for single microparticle-based detection in suspension arrays using FRET T2 - Tag der Chemie 2013 CY - Potsdam, Germany DA - 2013-06-27 PY - 2013 AN - OPUS4-28948 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Elementspurenbestimmung in hochreinen Graphitpulvern mit direkter Feststoff-ET AAS T2 - Colloquium Analytische Atomspektroskopie CANAS 2013 CY - Freiberg, Germany DA - 2013-03-17 PY - 2013 AN - OPUS4-30207 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Agudo Jácome, Leonardo T1 - Practical Aspects of 3D Crystalline Defect Analysis for Engineering Materials using Scanning Transmission Electron Microscopy T2 - Microscopy Conference 2013 CY - Regensburg, Germany DA - 2013-08-25 PY - 2013 AN - OPUS4-30211 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Plotnikov, Alexei T1 - Analysis of High Purity Metals by Glow Discharge Spectrometry Using Synthetic Standards with Different Dopant Types T2 - Winter Conference on Plasma Spectrochemistry 2014 CY - Amelia Island, FL, USA DA - 2014-01-05 PY - 2014 AN - OPUS4-30358 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riesemeier, Heinrich T1 - High resolution synchrotron-based radiography and tomography at the Bamline (BESSY) T2 - 9th International Conference on X-Ray Microscopy, XRM2008 CY - Zurich, Switzerland DA - 2008-07-21 PY - 2008 AN - OPUS4-17853 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - Visualization of package induced deformation of Integrated Circuits T2 - SNI2010, Deutsche Tagung für Forschung mit Sychrotronstrahlung, Neutronen und Ionenstrahlen CY - Berlin, Germany DA - 2010-02-24 PY - 2010 AN - OPUS4-20959 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kupsch, Andreas T1 - Modellrekonstruktion unvollständiger computertomographischer Datensätze mit DIRECTT-Algortihmus T2 - DGZfP-Jahrestagung 2010 CY - Erfurt, Germany DA - 2010-05-10 PY - 2010 AN - OPUS4-21315 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riesemeier, Heinrich T1 - Perfomance of the BAMline at a BESSY II wavelength shifter T2 - 8th International Conference on Synchrotron Radiation Instrumentation (SRI 2003) CY - San Francisco, CA, USA DA - 2003-08-25 PY - 2003 AN - OPUS4-5051 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - First synchrotron refraction CT of cartilage T2 - BESSY Users Meeting 2007 CY - Berlin, Germany DA - 2007-12-06 PY - 2007 AN - OPUS4-16367 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riesemeier, Heinrich T1 - Three dimensional analysis, modeling and simulation of microstructures and transport processes in carbon fiber based porous materials T2 - Third Joint BER II and BESSY II Users´ Meeting CY - Berlin, Germany DA - 2011-11-30 PY - 2011 AN - OPUS4-25126 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rechlin, J. A1 - Soni, Akshar T1 - SimuCrown: Die Simulation der funktionellen Alterung – Wege zur Vorhersage von Misserfolgen dentaler Kronenrestaurationen in vitro N2 - Bei der Versorgung von Zähnen mit dentalen Kronenrestaurationen entsteht ein Kronen-Zement-Zahn-Komplex (KZZK). Dentale Werkstoffe überzeugen mit besten Materialeigenschaften, aber wie funktionieren sie im Verbund? Unsere zentrale Annahme lautet, dass die Alterung des KZZK eine zentrale Rolle bei Misserfolgen spielt. Präsentiert werden die Methodik und Bilder der ersten Arbeitsphase. T2 - Gemeinsame Jahrestagung der Deutschen Gesellschaft für Zahnerhaltung (DGZ) und der Deutschen Gesellschaft für Prothetische Zahnmedizin und Biomaterialien e.V. (DGPro) CY - Leipzig, Germany DA - 13.06.2024 KW - Kronen-Zement-Zahn-Komplex KW - Funktionelle Alterung KW - Computertomographie PY - 2024 AN - OPUS4-60776 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Axel T1 - Bewertung von DIRECTT CT-Rekonstruktionen T2 - DGZfP-Jahrestagung 2013 CY - Dresden, Germany DA - 2013-05-05 PY - 2013 AN - OPUS4-28492 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - Synchrotron based Refraction Enhanced Micro CT for Non-Destructive Materials Characterization T2 - 15. Nationales Symposium SAMPE Deutschland e.V., FASERVERBUNDWERKSTOFFE INNOVATIV UND SICHER CY - Berlin, Germany DA - 2009-02-18 PY - 2009 AN - OPUS4-18902 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kupsch, Andreas T1 - Three-dimensional Imaging of Magnetic Domains T2 - HZB User Meeting 2013 CY - Berlin, Germany DA - 2013-12-04 PY - 2013 AN - OPUS4-14309 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schünemann, Pia T1 - Spatiotemporal monitoring of River Spree N2 - Per- and polyfluoroalkyl substances (PFAS) are known for their high chemical stability and persistence. They have the potential to bioaccumulate in organisms. Moreover, PFAS are environmental contaminants of concern due to their ubiquitous appearance in the environment. Consequently, there is a demand to develop and optimize new methods for analyzing these substances. In this project a comprehensive investigation of the pollution situation of the entire River Spree was performed. The sum parameter approach (extractable organic fluorine, EOF) is used to monitor a broad spectrum of PFAS in surface water. Herein, high resolution-continuum source-graphite furnace molecular adsorption spectrometry (HR-CS-GFMAS) is employed for fast and sensitive measurements. The occurrence and fate of PFAS are detected with complementary target and non-target screening. Hot spots as well as seasonal aspects with influence on the pollution situation on the river were detected. Moreover, the correlation to other organic pollutants was investigated via statistical analysis. The question arises if routine organic trace substance monitoring can provide information about PFAS contamination. T2 - 3rd Fluorine Summer School and Conference of the CRC 1349 CY - Berlin, Germany DA - 06.10.2025 KW - PFAS KW - HR-CS-GFMAS KW - Environmental Analysis PY - 2025 AN - OPUS4-64564 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bauer, L. T1 - Complementary X-ray techniques reveal hidden details in dental materials N2 - In dentistry it is of great interest to achieve good sealing interzones between tooth tissue and restoration materials to avoid, e. g. secondary caries. μXRF and CμXRF are suitable to investigate the elemental composition at these interzones in respect to diffusion of elements. Synchrotron X-ray refraction radiography (SXRR) and μCT measurements deliver highly resolved structural information and make structural changes such as micro cracks within the filling and the tooth tissue visible. The presented measurements are part of the DFG funded project IXdent (Integrative X-ray techniques for chemical and structural characterizations of dental interzones.) The depth-resolved CμXRF measurements are affected by absorption effects, making a quantitative investigation of the interzone in depth difficult. Full 3D quantification of heterogenous samples requires a complete model including dark matrix and density for each voxel. The combination of different techniques paves the way for a quantitative analysis of dental interzones. T2 - 15th BESSY@HZB User Meeting CY - Berlin, Germany DA - 22.06.2023 KW - X-ray refraction KW - X-ray fluorescence KW - Computed tomography KW - Dental material PY - 2023 AN - OPUS4-57849 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tötzke, Chr. T1 - Three Dimesional Analysis, Modeling and Simulation of Microstructures and Transport Processes in Carbon Fiber Based Porous Materials T2 - HZB User Meeting 2011 CY - Berlin, Germany DA - 2011-11-30 PY - 2011 AN - OPUS4-25079 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Axel T1 - Correction of Diffuse X-Ray Detector Based Background T2 - International Symposium on Digital Industrial Radiology and Computed Tomography (DIR 2011) CY - Berlin, Germany DA - 2011-06-20 PY - 2011 AN - OPUS4-24121 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ewers, Benjamin T1 - Terahertz Spectral Imaging Techniques in NDT: Topography and Computed Tomography T2 - Laser Optics CY - Berlin, Germany DA - 2010-03-22 PY - 2010 AN - OPUS4-21077 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Namrata, Jaykhedkara A1 - George, Janine T1 - Atomistic interaction at the solid interface between Li6PS5Cl and Li metal N2 - Solid-state batteries offer higher energy density and improved safety than conventional lithium-ion cells with flammable liquid electrolytes, [1] but poor interfacial compatibility at the solid-electrolyte (SE)|electrode interface, especially with lithium metal anodes, remains a major challenge. [2] To gain a deeper understanding of the structural and chemical factors governing the formation and growth of this interface, we selected Li6PS5Cl (SE) and Li metal anode as prototype materials. In this work, we begin by performing ab initio molecular dynamics accelerated by machine-learning potentials in VASP, to obtain lattice parameters and bulk moduli of the bulk Li6PS5Cl and Li metal phases, thereby quantifying lattice-mismatch strain, compressibility differences, and their thermal evolution. We then analyze the atomic structure and coordination environments at the Li6PS5Cl|Li interface, which is carefully constructed for the [100] orientation for both SE and Li, allowing the lowest possible strain (see Fig. 1). Dominant bonding motifs are identified using Crystal Orbital Hamilton Population [3] analysis via LOBSTER.[4] Radial distribution functions of the interface are compared with those of the respective bulk phases in the 200-400 K range to elucidate temperature-driven structural rearrangements. This combined analysis reveals how interfacial bonding evolves with temperature and provides critical insight into chemical and mechanical stability at the interface. Our findings offer a quantitative framework for correlating bulk properties with interfacial structure, thereby informing the design of more robust SEs and engineering strategies to improve interfacial compatibility. T2 - 12th Workshop “Lithium-Sulfur Batteries” CY - Dresden, Germany DA - 17.11.2025 KW - Solid-state batteries KW - Interface chemistry KW - Machine learning-molecuar dynamics PY - 2025 AN - OPUS4-64804 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Exner, Thomas T1 - Spurenstoffe im Rohabwasser als Normalisierungsparameter N2 - Im Zuge der aktualisierten Kommunalabwasserrichtlinie (EU 2024/3019) bekommen u.a. Spurenstoffe und Krankheitsüberwachung eine erhöhte Aufmerksamkeit. Zum einen sollen ausgewählte Spurenstoffe zur zukünftigen Überwachung der Funktionalität der vierten Reinigungsstufe eingesetzt werden. Zum anderen ist europaweit die Infrastruktur einer Abwassersurveillance für mehrere Krankheitserreger zu gewährleisten. Letzteres wird seit 2022 in Deutschland mit den Projekten ESI-CORA und AMELAG mit wöchentlich je zwei Probennahmen auf 20 bis 170 Kläranlagen umgesetzt. In der vorliegenden Arbeit wurde geprüft, ob das Monitoring von Spurenstoffen zum Ausgleich von starken Schwankungen in der Viruslast verwendet werden kann (Normalisierung). T2 - 16. Langenauer Wasserforum (LWF) CY - Langenau, Germany DA - 17.11.2025 KW - Carbamazepin KW - Immunoassay KW - Anthropogene Marker KW - ELISA KW - Spurenstoffe PY - 2025 AN - OPUS4-64809 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Eiben, Mario A1 - Tscheuschner, Frank A1 - Stahl, Michael T1 - Gefahrgut-Daten und -Recherche DGG-Info gebührenfrei im Internet N2 - Im Zuge ihrer Open-Source-Strategie stellt die BAM die neue Recherche (DGG-Info) und den Gefahrgut-Datenservice unter www.dgg.bam.de gebührenfrei zur Verfügung. Sie leistet damit einen wichtigen Beitrag zur digitalen Transformation und Standardisierung im Gefahrgutbereich. T2 - Gefahrgut-Techik-Tage Berlin CY - Berlin, Germany DA - 13.11.2025 KW - Gefahrgut KW - Gefahrgutdaten KW - Gefahrgutrecherche KW - Datenbank GEFAHRGUT KW - Dangerous goods KW - Dangerous goods data KW - Dangerous goods research KW - Dangerous goods database PY - 2025 AN - OPUS4-64807 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - 3D synchrotron refraction and sub-micrometer computed tomography at BAMline T2 - Industrieforum "Bildgebende Röntgenverfahren neue Einblicke in kleinste Strukturen" CY - Karlsruhe, Germany DA - 2006-11-17 PY - 2006 AN - OPUS4-15467 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kupsch, Andreas T1 - Three-dimensional Imaging of Magnetic Domains with Phase Gratings T2 - 6th Joint BER II and BESSY II User Meeting CY - Berlin, Germany DA - 2014-12-03 PY - 2014 AN - OPUS4-32211 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hartnig, C. T1 - Investigation of the water distribution in porous structures for fuel cell applications by means of sychrotron tomography T2 - 26. BESSY Usermeeting CY - Berlin, Germany DA - 2008-12-07 PY - 2008 AN - OPUS4-18523 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kupsch, Andreas T1 - Scanning refraction enhanced X-ray darkfield radiography T2 - 4th Joint BER II and BESSY II User Meeting 2012 CY - Berlin, Germany DA - 2012-12-13 PY - 2012 AN - OPUS4-27475 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ewers, Benjamin T1 - Spectral Terahertz Topography T2 - 34th International Conference on Infrared, Millimeter and THz waves CY - Busan, South Korea DA - 2009-09-21 PY - 2009 AN - OPUS4-20066 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Issever, A. T1 - First high-resolutional DEI tomography images of cartilage T2 - 93rd Scientific Assembly and Annual Meeting of the Radiological Society of North America, RSNA 2007, McCornick Place CY - Chicago, IL, USA DA - 2007-11-25 PY - 2007 AN - OPUS4-16294 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hartnig, C. T1 - Water in gas diffusion layers of PEM fuel cells - a combined experimental and theoretical study T2 - 26. BESSY Usermeeting CY - Berlin, Germany DA - 2008-12-06 PY - 2008 AN - OPUS4-18524 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kupsch, Andreas T1 - Three Dimensional Analysis, Modelling and Simulation of Microstructures and Transport Processes in Carbon Fibre Based Porous Materials T2 - 2nd HZB Joint User's Meeting CY - Berlin, Germany DA - 2010-12-09 PY - 2010 AN - OPUS4-22863 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hentschel, Manfred P. T1 - Three-dimensional imaging of magnetic domains T2 - 2nd HZB Joint User's Meeting CY - Berlin, Germany DA - 2010-12-09 PY - 2010 AN - OPUS4-22885 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - Non Destructive Evaluation of Advanced Materials by X-ray Refraction Topography T2 - 15. Nationales Symposium SAMPE Deutschland e. V., FASERVERBUNDWERKSTOFFE INNOVATIV UND SICHER CY - Berlin, Germany DA - 2009-02-18 PY - 2009 AN - OPUS4-18903 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lange, Axel T1 - Korrektur des Hinterleuchtens an CT-Sychrotrondaten T2 - DGZfP-Jahrestagung 2011 CY - Bremen, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-23768 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rizzo, F. T1 - Evaluation of nano-sized internal oxidation in a Fe-13Cr alloy exposed to water vapor atmosphere N2 - The topotactic formation of nano-sized precipitates immediately under the internal oxide layer in a Fe-13Cr alloy exposed to oxidizing water vapor atmosphere was recently reported. The precipitates were identified as lath-shaped Fe-Cr spinel exhibiting a crystallographic orientation relationship with the ferritic matrix. The authors proposed that these precipitates could act as a precursor to the formation of the spinel layer observed in the adjacent part of the oxide scale.The occurrence of internal oxidation in Fe–Cr alloys subjected to similar conditions had been previously identified and directly correlated to the presence of water vapor. In the present work, we attempt to rationalize the processes occurring during the oxidation of this alloy through thermodynamic and kinetic analyses based on the CALPHAD approach, using the geometrical representation of phase equilibria and concepts developed to describe internal oxidation. The influence of water vapor on the mechanism and kinetics of formation of the nano-sized precipitates and its role in the overall oxidation process is also considered. T2 - CALPHAD XLV The forty-fifth International Conference on CALPHAD (Computer Coupling of Phase Diagrams and Thermochemistry) CY - Awaji Island, Hyogo, Japan DA - 29.05.2016 KW - Precipitation KW - Internal oxidation KW - CALPHAD KW - Topotactic transformation KW - Microscopy PY - 2016 AN - OPUS4-42156 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gawlitza, Kornelia T1 - Integrating fluorescent molecularly imprinted polymer (MIP) sensor particles with a microfluidic platform for nanomolar small-molecule detection in water N2 - Besides the traditional areas of application such as separation and enrichment which made molecularly imprinted polymers (MIPs) very attractive, they have emerged as a valuable detection tool in the field of environmental analysis due to the low production costs, high stability, format adaptability and the possibility to imprint and thus specifically recognize a wide variety of target analytes. Regarding optical sensing, however, MIPs have only been used in considerably few applications, especially in fluorescence sensors, basically because of the challenge to incorporate a fluorescently responding moiety into a polymer matrix. One way to overcome this limitation is the coating of a thin MIP layer onto the surface of silica nanoparticles using tailor-made fluorescent indicator monomers or cross-linkers for direct transfer of the binding event into an optical signal. Regarding sensors for environmental monitoring, microfluidic devices utilizing optical detection modules are especially appealing because of their versatility in terms of miniaturization and automation. So far, MIPs have only rarely been used in combination with microfluidic sensor devices. Here, we present the hydrogen bond-mediated optical response of fluorescent MIP sensor particles against a typical small-molecule analyte 2,4-D (2,4-dichlorophen¬oxyacetic acid) which is an important herbicide widely used in agriculture and known to cause adverse health effects when ingested by contaminated water. By combining the sensor particles with droplet-based 3D microfluidics, a microfluidic phase-transfer assay was designed which enables the direct analysis of 2,4-D in river and lake water without sample pre-treatment or clean-up. T2 - Bioinspired Materials conference 2017 CY - Manchester, UK DA - 31.08.2017 KW - MIPs KW - Fluorescence KW - Sensor KW - Water-monitoring PY - 2017 AN - OPUS4-41828 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Heinrich, Hans-Joachim T1 - Certification of the mass fractions of trace elements in a medium purity graphite reference material N2 - The increasing application of graphite materials in various fields of technology and science enhances the demand for strictly controlled properties which are often directly correlated to the contents of trace element impurities. Therefore, the availability of powerful, rapid and reliable analytical methods for the determination of trace impurities is essential for process and quality control. Certified reference materials, indispensable for the development and validation of appropriate trace analytical methods for the characterization of special purity graphite materials are still lacking. Therefore, BAM in co-operation with the working group “Special Materials” of the committee of chemists of GDMB (Gesellschaft der Metallurgen und Bergleute e.V.) certified an industrially sourced graphite material with genuine elemental impurities. The candidate material was a commercial product (NBG 18) taken from the customary production line of the producer SGL CARBON, Chedde (France). The homogeneity of the powdered material was assessed by means of ETV-ICP OES and DC Arc-OES. Certification of the candidate reference material was based on an inter-laboratory comparison involving 17 expert laboratories from Germany, France, Slovenia, USA, South Africa. A variety of different mineralization, digestion, leaching, fusion and combustion techniques prior to ICP OES and photometry, methods without sample preparation (INAA, k0-INAA) as well as typical solid sampling methods (ETV-ICP OES, ETV-ICP-MS, SS-ET AAS, DC Arc-OES, MF-DC Arc-OES) were used to characterise the material. Certified mass fractions and their expanded uncertainties (k = 2) were assigned for 27 elements (Al, B, Ba, Be, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, S, Si, Sr, Ti, V, W, Y, Zn, Zr), ranging from (0.00050 ± 0.00027) mg/kg for Be to (41 ± 6) mg/kg for Si. Informative values are given for further parameters: trace element contents of Ag, As, Au, Bi, Cd, Cs, Dy, Eu, Ga, Gd, Hg, In, La, Nb, Rb, Re, Rh, Sb, Sc, Se, Sm, Sn, Ta, Tb, Te, Th, U; method specific values obtained by ETV-ICP OES (BETV and SiETV) and ash content. The new certified material is available as BAM Reference Material BAM-S009 Medium Purity Graphite Powder. T2 - BERM-15 CY - Berlin, Germany DA - 23.09.2018 KW - Certification KW - Graphite KW - Reference material KW - Trace elements PY - 2018 AN - OPUS4-46235 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Burnage, Samual Charles T1 - Combination of Fluorescent Molecularly Imprinted Polymers and Microfluidics for the Detection of Cancer Biomarker Phosphorylated Tyrosine N2 - Cancer is modern medicine’s biggest challenge. It is now thought to be responsible for one in six deaths worldwide making early diagnosis, and treatment thereon, essential for better prognoses1. Protein phosphorylation is a post-translational modification of particular interest as a biomarker in the understanding of neurodegenerative diseases and a number of cancer pathways. There is therefore a need for robust, fast and low-cost techniques for the detection of these phosphorylations. Fluorescent molecularly imprinted polymers (MIPs) are a cheap and selective material for both the extraction and detection of a multitude of analytes. Often referred to as “plastic antibodies”, MIPs provide added robustness and chemical stability compared to their natural counterparts. Application of these fluorescent MIPs to a microfluidic lab-on-a-chip platform offers a fast, versatile method for the detection of biomarkers containing phosphorylated amino-acids such as phosphorylated tyrosine. Here, we present a tuneable core-shell MIP system consisting of a polystyrene core, silica inner-shell and MIP outer-shell. The MIP outer-shell contains a urea-based fluorescent probe monomer co-polymerised into the polymer matrix that can detect phosphorylated-tyrosine based on a change in its optical properties. The phosphate group interacts with the fluorescent probe via hydrogen bonding interactions yielding a fluorescence enhancement in organic solvents. The fluorescent MIPs are to be applied to a microfluidic platform, for rapid extraction of the analyte from the aqueous sample phase and simple optical detection in the organic phase that contains the MIP microparticles. T2 - Rapid Methods Europe 2018 (RME2018) CY - Amsterdam, The Netherlands DA - 05.11.2018 KW - Molecularly Imprinted Polymers KW - Microfluidics KW - Fluorescent MIPs KW - MIPs KW - Phosphorylated Tyrosine KW - Biomarker PY - 2018 AN - OPUS4-47019 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Verhassel, A. T1 - Application of novel tumor cell glycan-specific nanoprobes for detecting and targeting breast and prostate cancer N2 - Glycosylation is a post-translational modification that is involved in the regulation of many biological processes. The glycosylation pattern in cancer cells differs from that in normal cells. One of the main alterations that has been observed in several cancers is the increase of sialic acids at the end of the glycan. The increase of sialic acids and other alterations affect development and progression of tumors and are found to play an important role in cancer invasiveness and metastasis. Molecularly imprinted polymers (MIPs) are synthetic recognition elements that show high selectivity and affinity for their targets. These polymers show promising applications in detection methods for cancer cells. In this study newly synthesized MIPs, labelled with a nitrobenzoxadiazole (NBD) fluorophore, are investigated for their specificity and utility in the detection of cancer cell-related sialic acids. T2 - Biomarkers – methods and technologies CY - Malmö, Sweden DA - 25.10.2018 KW - Nanoparticles KW - MIPs KW - Cancer PY - 2018 AN - OPUS4-46490 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sternbaek, L. T1 - Holographic microscopy-Macrophage uptake of SA MIPs N2 - Sialic acid (SA) is a cell surface glycan, which has been found to be upregulated on more aggressive cancers. Therefore, there is a great interest in developing methods for detection of SA on a great interest in developing methods for detection of SA o on cancer cells. We are screening SA on cell lines by fluorescent molecularly imprinted polymers, SA fluorescent molecularly imprinted polymers, SA fluorescent molecularly imprinted polymers, SA fluorescent molecularly imprinted polymers, SA fluorescent molecularly imprinted polymers, SA fluorescent molecularly imprinted polymers, SA -MIPs. Quantitative phase imaging (QPI) is a digital holographic technique. Various cellular parameters can be visualized and calculated from the particular hologram, including individual cell area, thickness, volume and population confluence and cell counts. The aim was to investigate the possible uptake of SA in macrophage cell lines in in vitro cell cultures and check if they affected the cell. T2 - Biomarkers – methods and technologies CY - Malmö, Sweden DA - 25.10.2018 KW - Digital holographic microscopy KW - MIPs KW - Sialic acid PY - 2018 AN - OPUS4-46493 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sun, Yijuan T1 - Molecularly Imprinted Polymer Embedded BODIPY Probes for the Fluorescence Detection of Antibiotics N2 - Antibiotics are widely used to combat bacterial infections in humans and animals and their use has greatly improved modern healthcare. However, frequent and reckless use of antibiotics can cause antibiotic resistance in bacteria and pollute ecosystems. Therefore, the rapid and reliable detection of antibiotics is crucial. Fluorescence sensing is particularly attractive because of its high sensitivity and low limits of detection. Fluorescence assays can be carried out in a variety of platforms such as strips and particles among others. Recently, core-shell molecularly imprinted polymers (MIPs) have emerged as a promising sensor platform for (bio)chemical detection due to their low-cost, high stability, reusability, high affinity and selectivity.MIPs in combination with fluorescent molecular probes are gorgeous, since the covalently embedded probe allows for direct indication of a rebound template and provides a wealth of information about the binding state of a MIP through the multitude of fluorescence parameters accessible, facilitating MIP optimization. In the present work, we have developed a novel series of fluorescent functional monomers, which consist of a fluorophore with a π-conjugated urea recognition site and one or two polymerizable units. The fluorescent monomers are covalently embedded into the MIP matrix to generate fluorescence changes upon template binding (Figure 1). Preliminary titrations of the dye monomer with the analytes show a blue shift of the absorption spectrum and a decrease in the fluorescence intensity which confirms the formation of hydrogen bonds between the urea and the carboxylate group of the antibiotic. Compared with the non-imprinted polymers, the MIP shells on core carrier particles have demonstrated an effective imprinting by showing a higher fluorescence response upon analyte binding. T2 - EUROPT(R)ODE2021 CY - Warsaw, Poland DA - 28.11.2021 KW - Antibiotics KW - Fluorescent dye KW - Molecularly Imprinted Polymer PY - 2021 AN - OPUS4-53891 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pérez-Padilla, Victor T1 - Fluorescent molecularly imprinted polymer particles for detection of environmental contaminants N2 - Analysis of environmental contaminants such as pesticides is increasing in importance due to frequent detection of residues in water reserves and food stuff, as well as lowering of maximum residue levels (MRLs). Molecularly imprinted polymers (MIPs) have been developed for preconcentration of these analytes prior to analysis by chromatographic techniques. MIPs are prepared by polymerization of monomers in a matrix containing the analyte, followed by extraction of the analyte to obtain binding sites that are complementary to the analyte of interest. Recently, our group developed MIPs containing fluorescent reporter molecules that can be used for direct detection and quantification of 2,4-D in contaminated water. Core/shell MIP particles were employed, consisting of submicron silica nanoparticles coated with a MIP shell containing a fluorescent reporter whose signal was enhanced upon binding with 2,4-D in water. A limit of detection of 20 nM was attained. We present here a comparable system, composed of fluorescent core-shell MIPs for the direct analysis of pesticides in environmental samples. T2 - Europtrode 2021 CY - Warsaw, Poland DA - 29.11.2021 KW - Glyphosate KW - Guanidinium Receptors KW - Fluorescent Probes KW - Molecularly Imprinted Polymers KW - Core-Shell Particles PY - 2021 AN - OPUS4-53878 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Carl, Peter T1 - Multiplex suspension array fluorescence immunoassay (SAFIA) for environmental screening of bioactive compounds in wastewater. N2 - Due to the demand of monitoring the water quality regarding emerging pollutants, such as drug residues, selective, high-throughput and multi-target analytical methods must be established. On the one hand, the influence of sewage on natural surface waters must be routinely monitored. On the other hand, estimation of removal efficiencies of pollutants, such as drug residues, is in the focus of industrial and public wastewater treatment. Immunoassays, such as ELISA, offer the possibility to be highly sensitive and selective due to the high target affine and specific recognition of antibodies to target molecules. Batch-wise processing in microtiter plates allow the necessary high-throughput, but only a single analyte can be determined within one measurement. To overcome these disadvantages, we developed a four-plex micro-bead based flow cytometric assay, which is adaptable for the microtiter plate format. The modular and self-prepared bead support consists of polystyrene-core-silica-shell particles. While the polystyrene core is used for encoding, by introducing different amounts of fluorescent dyes, the silica-shell creates a solid-support for the immunoassay: The target analytes, three drugs, carbamazepine, diclofenac and caffeine and the f ecal marker isolithocholic acid are covalently coupled to amino-groups on the surface via NHS-chemistry. A competitive immunoassay is subsequently conducted in a simple mix-and-read procedure. Finally, we could use SAFIA to assess the influent of treated and untreated waste water on the Douro river estuary in Portugal. The results of the analysis are comparable to ELISA. However, measurements could be carried out in 25% the time of analysis. T2 - Adlershofer For­schungs­forum 2017 CY - Berlin, Germany DA - 10.11.2016 KW - Immunoassay KW - Anthropogenic markers KW - Wastewater KW - Flowcytometry KW - Bead-based assay PY - 2017 AN - OPUS4-42824 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jankevics Jones, H. T1 - Determination of core-shell particle mass and size distribution, density, and distinguishing shell thicknesses by resonant mass measurements N2 - An important aspect of micro or nano particles development is the understanding and control of the particle structure, as it can be determining for particle’s final function, and it affects among other things potential further surface functionalisation/modification. This work shows the capability of resonant mass measurements (RMM) to measure the mass and density of micron sized particles. The technology utilizes a suspended MEMS microchannel resonator, through which individual particles transit across the resonator altering the resonant frequency, which is then detected using an optical-based method. Changes in frequency observed when a particle enters the microchannel resonator are proportional to the buoyant mass of the particle, and can be translated into mass, size or surface area. RMM therefore allows particle concentration to be determined as well as particle mass in a single measurement. Furthermore, a method for estimating the density distribution of particles from RMM measurements has been developed. This uses the convolution of the buoyant mass distribution of the particles obtained when suspended in different fluids. By combining the data from the density and mass determinations, small mass shifts arising from applying a coating to a particle can be estimated, and the resulting shell thicknesses calculated. These methods have been applied to silica coated and uncoated polystyrene latex particles. RMM shows that it can be used to measure, and distinguish between, silica shell thicknesses that are in the order of 10s of nanometres on hybrid micron-sized particles T2 - 7th International Colloids Conference CY - Sitges, Barcelona, Spain DA - 18.06.2017 KW - Core-shell particles KW - Resonant mass measurement PY - 2017 AN - OPUS4-42259 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Agudo Jácome, Leonardo T1 - 3D Reconstruction, Visualization and Quantification of Dislocations from TEM Stereo-Pairs N2 - Dislocations, as carriers of plastic deformation, affect important properties in technical materials, e. g., plasticity. The realistic description of plastic deformation caused by dislocations demands the representative measurement of their features, e.g., line direction, slip plane, Burgers vector and density. Bulk deformation of structural and functional alloys requires reliable data from large regions. The filiform nature of dislocations interacting with complex microstructures additionally demands observation and analysis techniques that allow resolving the details of their interactions in space. The use of electron tomography for this purpose is bound to difficult and time consuming experimental setups, which are not always applicable to any material. In this contribution a new tool is presented, which enables the three-dimensional reconstruction, visualization and quantification of dislocation densities and directions from manual tracing of scanning transmission electron microscopy (STEM) stereo-pairs. Examples are shown from samples of a creep-deformed monocrystalline Ni-base superalloy. T2 - 3D Materials Science 2016 CY - St. Charles, Illinois, USA DA - 10.07.2016 KW - Dislocation KW - Scanning Transmission Electron Microscopy KW - 3D KW - Quantification KW - Superalloy PY - 2016 AN - OPUS4-42173 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Agudo Jácome, Leonardo T1 - Nano-sized precipitates in an Fe-13Cr alloy formed under oxidizing water vapor atmosphere N2 - Oxidation of a Fe-13Cr alloy under water vapor at 600 °C produced a zone of nano-sized precipitation underneath the outside scale formed by iron oxides and Fe‒Cr spinel. The majority of the spinel layer shows a mixed orientation relationship to the ferritic matrix {100}α || {100}sp & <011>α || <001>sp. However, also the discovered precipitated particles are characterized by the same crystallographic orientation relationship to the respective ferritic parent grain. The habit of the precipitates is best described by a lath morphology with their main axis parallel to <100> of ferrite. Energy dispersive X-ray spectroscopy (EDX) and electron backscatter diffraction (EBSD) in an scanning electron microscope (SEM) have been applied to characterize the oxide layer in the micrometer scale. The clearly smaller precipitates were subsequently investigated by transmission electron microscopy (TEM). Specimens have been prepared by focused ion-beam (FIB) milling at an area previously characterized by EBSD. They cover the ferritic base material, but mainly the precipitation zone and the Fe‒Cr spinel layer. Energy filtered selected area diffraction (SAD) in the conventional (C)TEM and high-angle annular darkfield (HAADF) imaging in the scanning (S)TEM mode were employed in the characterization of the specimens. T2 - International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2015 CY - Whistler, British Columbia, Canada DA - 28.06.2015 KW - Precipitation KW - Oxidation KW - Microscopy KW - Topotactic transformation KW - Spinel PY - 2015 AN - OPUS4-42169 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bolz, Axel T1 - Microfluidic Paper-Based Analytical Devices with Surface Enhanced Raman Scattering Detection N2 - Microfluidic paper-based analytical devices (μPADs) in combination with surface enhanced Raman scattering (SERS) provide a way for analyses of complex mixtures. The μPADs can be used for the chromatographic separation of different compounds of mixtures in combination with the separate detection of the analytes in different zones on the paper by SERS. SERS allows to observe analytes directly without labelling in low concentrations in aqueous solutions and to identify them by their spectral fingerprint. SERS substrates on the μPADs were created by drying standard silver nanoparticle (AgNP) solution on the paper. The microfluidic structure of the μPADs was prepared by wax printing. As a model system, an aqueous solution of the non-fluorescent analyte adenine and two fluorescent dyes tris(2,2’-bipyridyl)dichlororuthenium(II) and sulforhodamine B was tested. The dependency of the SERS signal intensity on the analyte concentration can be fitted using a Langmuir isotherm curve progression. With this approach, a semi-quantitative analysis of the components is possible. The reproducibility and stability of the measurement procedure was tested with several measurements over time, different NP batches, and with different analytes in different concentrations and resulted in an average relative standard deviation of 16 %. The SERS spectra of the mixture of the model system are dominated by one compound depending on the concentration ratio. For the detection and identification of all components of the mixture, the compounds were therefore separated on the μPADs and measured at different positions. The position of adenine on the μPADs is dependent on the AgNP coverage of the paper. Due to this effect, it possible to detect adenine on a defined point on the μPADs and to get an information on the concentration in a mixture of three components. T2 - 30. Tag der Chemie Humboldt-Universität zu Berlin CY - Berlin, Germany DA - 05.07.2017 KW - SERS KW - µPAD PY - 2017 AN - OPUS4-42265 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Unger, Wolfgang T1 - Reference-free total reflection X-ray fluorescence analysis for quantification of functional groups on surfaces for bioanalytical applications T2 - ALTECH Symposium 2014 - Analytical techniques for precise characterization of nanomaterials, EMRS Spring Meeting 2014 CY - Lille, France DA - 2014-05-26 PY - 2014 AN - OPUS4-30971 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rurack, Knut T1 - Reference-free total reflection X-ray fluorescence analysis for surface functional group quantification of funtional groups on surfaces for bio-analytical applications T2 - E-MRS 2014 Spring Meeting CY - Lille, France DA - 2014-05-26 PY - 2014 AN - OPUS4-30787 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ashokkumar, Pichandi T1 - Test strip-based fluorometric detection of fluoride in aqueous media with a BODIPY-linked hydrogen bonding receptor T2 - Alexander-von-Humboldt-Stiftung Network-Meeting CY - Berlin, Germany DA - 2014-04-09 PY - 2014 AN - OPUS4-30788 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Streeck, C. T1 - Reference-free total reflection X-ray fluorescence analysis for quantification of functional groups on surfaces for bioanalytical applications T2 - 6th Joint BER II and BESSY II User Meeting of HZB CY - Berlin, Germany DA - 2014-12-04 PY - 2014 AN - OPUS4-32390 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Silke T1 - Characterisation of a high purity nickel material to be used as a primary standard for element determination N2 - A candidate material for the use as primary standard for nickel determination was characterized with respect to total purity. For element determination a pure material can serve as primary standard. However, real world materials are never absolutely pure, hence the total purity of such materials need to be determined experimentally. A reasonable target uncertainty for the purity statement is 10-4 relative. Usually, the purer the material, the easier it is to achieve this target uncertainty. There are two basic ways in order to be able to establish a total purity statement. One is to determine the main component of a high purity material by a direct method such as coulometry, gravimetry or titrimetry. However, these methods are not selective enough for one element and therefore require certain efforts to analyse the material with respect to impurities with interfering analytes. Moreover, to reach the defined target uncertainty is not easy or often impossible to achieve. The second approach is to determine the sum of all possible impurities (as mass fraction) and to subtract it from the ideal purity of 100 % (1 kg/kg). In principle all impurities (all elements not being the matrix element), metals and non-metals must be considered. In this work both approaches to determine the total purity of the nickel material were followed and compared. The primary (solid) standards are usually used to prepare primary calibration solutions to which secondary and lower order calibration solutions are linked. T2 - BERM-15 CY - Berlin, Germany DA - 23.09.2018 KW - Primary standard KW - High purity material KW - Nickel PY - 2018 AN - OPUS4-46216 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winckelmann, Alexander T1 - Next level lithium isotope analysis by atomic absorption spectrometry in combination with machine learning N2 - An alternative method for lithium isotope amount ratio analysis is proposed by combining atomic absorption spectrometry with spectra data analysis by machine leaning. It is based on the well-known isotope shift of around 15 pm for the electronic transition at wavelength 670.7845 nm which can be measured by a high-resolution continuum source atomic absorption spectrometer (HR-CS-AAS). For isotope amount ratio analysis, a scalable three boosting machine learning algorithm (XGBoost) was employed and calibrated with a set of samples with a 6Li isotope amount fraction ranging from 99% to 6%. The absolute Li isotope amount fractions of these calibration samples were previously measured by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) and used as ab-initio data for the machine learning algorithm. Validation of the machine leaning model was performed with two standard reference materials (LSVEC and IRMM-016). The procedure was employed for the isotope amount ratio determination of a set of stock chemicals (Li2CO3, LiNO3, LiCl, LiOH, and LiF) as well as a BAM candidate LiMNC cathode reference material. Achieved uncertainties are one order of magnitude higher than those obtained by MC-ICP-MS. This precision and accuracy is nonetheless sufficient to resolve natural occurring variations in Lithium isotope ratios. Also, the LiMNC material was analyzed by HR-CS-AAS with and without matrix purification. The results are comparable within statistical error. T2 - Make and Measure 2020 CY - Online Meeting DA - 15.10.2020 KW - Lithium batteries KW - HR-CS-AAS KW - Machine learning KW - Isotope analysis KW - Spectrometry PY - 2020 AN - OPUS4-51541 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gojani, Ardian T1 - Examples of embedded & microfluidic-based sensors N2 - Sensors are the scientific and technological extension of human senses and enormously expand human capabilities. Despite the fact that scientific and technological advances are usually seen in a positive light, the name of this conference, Sensors for Good, put me in a bit of a trouble, because in general science does not operate in ethical categories, but instead it just tells how far from the truth one is. In this respect, sensors help us in recognizing states and events beyond our immediate reach. Fortunately, sensors are used for many applications, such as environmental monitoring, food control, and alike, which unequivocally benefit society. I will focus on a particular type of sensors, those that rely on microfluidics for operation and which are typically realized in lab-on-a-chip (LOC) devices. In this domain, where at least one of the dimensions through which a fluid flows is submillimetric, our natural senses fail, because the phenomena are too small to be detected either by eye, smell, touch, and even the common sense explanation that we learn for many years in school is not applicable, because the phenomena are dominated by different parameters. To give one simple example, in general the direction of flow in microfluidic channels does not depend on the up-down direction of the channel, because gravitational force or the weight of the fluid is negligible compared to the viscous forces present on the chip. This presentation consists of three parts: initially, two sensors produced in our lab are presented, followed by a simulation oriented discussion on microfluidics and biosensors, and finally a project in progress that we are involved in is presented, concluding with a list of open issues raised during the presentation. T2 - Software Freedom Kosova Conference CY - Online meeting DA - 26.09.2020 KW - Sensors KW - Cocaine detection KW - Fuel adulteration KW - MamaLoCA PY - 2020 AN - OPUS4-51396 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kling, I. C. S. T1 - Development and characterization of starch film and the incorporation of silver nanoparticles N2 - Starch is one of the biopolymers being used for bioplastic synthesis. For production, starch can be combined with different plasticizers, starches from different plant sources and even with nanomaterials to improve or to add film properties. The challenge of adding these, e.g. in the form of silver nanoparticles (AgNp) is to determine the concentration so as to avoid impairing the properties of the film, agglomeration or altering the visual characteristics of the film. In this study, a starch film synthesis route and the incorporation of silver nanoparticles has been proposed in order not to alter the properties of the film while maintaining the transparency and a clear colour of the starch film. The results showed that the proposed synthesis route is promising, efficient, reproducible, fast and the film has good mechanical properties. T2 - Semana MetalMat & Painal PEMM 2020 CY - Online meeting DA - 23.11.2020 KW - Biofilm KW - Starch KW - Starch nanoparticle KW - Silver nanoparticle PY - 2020 AN - OPUS4-51828 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - The impact of methanogenic Archaea on material, environment and health N2 - Different environmental samples reveal that methanogenic Archaea are part of a multi-species biofilm on corroding metallic structures (Fig. 1). Studies on microbial influenced corrosion (MIC) focus mainly on sulphate reducing Bacteria (SRB), leading to the assumption that they are exclusively responsible for metal corrosion. In fact, methanogenic Archaea are known to be involved in metal corrosion as well (e.g.Methanococcus maripaludis DSM 2067). In some cases SRB and methanogenic Archaea have comparable high corrosion rates. However, the underlying mechanisms causing corrosion are still unknown. The goal of this study is to analyse two environmental isolates (M. maripaludis DSM 2067, M. maripaludis KA1) and two human-related isolates (Methanobrevibacter oralis and Methanobrevibacter smithii) for their ability to deteriorate/transform metals, which are relevant for technical and clinical applications. Moreover, the studies will provide essential information on the interaction mechanisms of human-related Archaea, which are frequently found in peri-implantitis, with dental material such as implants, crowns and bridges leading to their degradation/transformation. T2 - IBRG-Tagung CY - Berlin, Germany DA - 26.04.17 KW - Biofilm KW - Corrosion KW - Implants KW - Methanogens KW - Archaea KW - Anaerob PY - 2017 AN - OPUS4-42492 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Methanogene Archaea - The impact of methanogenic Archaea on material, environment and health N2 - Different environmental samples reveal that methanogenic Archaea are part of a multi-species biofilm on corroding metallic structures (Fig. 1). Studies on microbial influenced corrosion (MIC) focus mainly on sulphate reducing Bacteria (SRB), leading to the assumption that they are exclusively responsible for metal corrosion. In fact, methanogenic Archaea are known to be involved in metal corrosion as well (e.g. Methanococcus maripaludis DSM 2067). In some cases SRB and methanogenic Archaea have comparable high corrosion rates. However, the underlying mechanisms causing corrosion are still unknown. The goal of this study is to analyse two environmental isolates (M. maripaludis DSM 2067, M. maripaludis KA1) and two human-related isolates (Methanobrevibacter oralis and Methanobrevibacter smithii) for their ability to deteriorate/transform metals, which are relevant for technical and clinical applications. Moreover, the studies will provide essential information on the interaction mechanisms of human-related Archaea, which are frequently found in peri-implantitis, with dental material such as implants, crowns and bridges leading to their degradation/ transformation. T2 - EMBO-Course CY - Wageningen, The Netherlands DA - 24.07.2017 KW - Corrosion KW - Methanogens KW - Biofilm KW - Implants PY - 2017 AN - OPUS4-41899 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Braymer, Joseph T1 - Methanobacterium IM1 as a model organism to study MIC N2 - Microbiologically influenced corrosion (MIC), also known as biocorrosion, is a process where microbes corrode metal surfaces causing detrimental damage to manmade infrastructure. Several studies, mainly under anaerobic conditions, have identified sulfate-reducing bacteria and methanogens as key players in biocorrosion. However, an important issue is that most MIC-related microbes at the moment are non-culturable. In addition, improved technologies (i.e., omics, biochemical, and microscopy methods) are needed to study, detect, simulate, and modulate MIC-related cases. Therefore, the selection of strains that can cause MIC, are culturable, and are genetically accessible, are of high importance for establishing new methods to study MIC on the molecular level. For example, the archaeal strain Methanobacterium IM1 has caught great attention due to its involvement in biocorrosion processes. Genes encoding for a novel enzyme (MIC NiFe-hydrogenase) have been proposed in this methanogen to be directly related to the e T2 - International Biodeterioration and Biodegradation Symposium 19 CY - Berlin, Germany DA - 11.09.2024 KW - Biocorrosion KW - Methanogen KW - Iron KW - Hydrogenase KW - Mechanism PY - 2024 AN - OPUS4-61508 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Simulating Microbiologically Influenced Corrosion (MIC) at Seabed Environment in Monopile N2 - Ensuring the safety of offshore wind structures (OWS) is critical to guaranteeing their long-term performance and supporting reliable green energy supply. Microbiologically influenced corrosion (MIC) presents a significant challenge, particularly for monopiles in seabed environments. This study investigates the behavior of microorganisms and their impact on the corrosion process of carbon steel within monopiles. To simulate MIC at the sediment/water interface, an in-house experimental column was developed and inoculated with sediment and water samples from the North Sea. The system was operated under varying flow rates to replicate seabed movement conditions. Multiple molecular microbiological methods, surface analysis techniques, and other approaches were employed to assess the effects of different treatments. This study provides insights into MIC mechanisms in offshore environments and supports the development of strategies to monitor MIC in OWS infrastructure T2 - ISMOS10 CY - Nashville, TN, USA DA - 11.08.2025 KW - MIC KW - Environmental Simulation KW - Field testing KW - Marine Environment PY - 2025 AN - OPUS4-64298 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Olbrich, Adelina-Elisa T1 - Deciphering microbiological influenced corrosion processes on steel with single cell-ICP-ToF-MS N2 - Microbiologically influenced corrosion (MIC) is a highly unpredictable process dictated by the environment, microorganisms, and the respective electron source. Interaction pathways between cells and the metal surface remain unclear. The development of this novel single cell-inductively coupled plasma-time of flight-mass spectrometry analytical method and a MIC-specific staining procedure facilitate the investigation of steel-MIC interactions. With this it is possible to analyze the multi-elemental fingerprint of individual cells. The detection method revealed elemental selectivity for the corrosive methanogenic archaeal strain Methanobacterium-affiliated IM1. The interface between material and environmental analysis thus receives special attention, e.g., when considering MIC on solid steel. Hence, the possible uptake of individual elements from different steel samples is investigated. Results showed the cells responded at a single-cell level to the different types of supplemented elements and displayed the abilities to interact with chromium, vanadium, titanium, cobalt, and molybdenum from solid metal surfaces. The information obtained will be used in the future to elucidate underlying mechanisms and develop possible material protection concepts, thus combining modern methods of analytical sciences with materials research. T2 - Adlershofer Forschungsforum 2022 CY - Berlin, Germany DA - 11.11.2022 KW - Single cell KW - Microbiological influenced corrosion MIC KW - Sc-ICP-ToF-MS KW - Method development PY - 2022 AN - OPUS4-56250 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hörmann, Anja Franziska T1 - extending the MOUSE in spirit: lifecycle of a GIXS experiment N2 - We present the new grazing incidence mode at the MOUSE, which adapts and extends the MOUSE methodology developed for transmission X-ray scattering (Smales and Pauw, 2021). Our methodology begins and ends in discussion with our users and embraces automation for reproducible experiments including sample organisation, instrument configuration, documentation and data processing. This poster presents methodological innovations and challenges. T2 - GISAXS 2025 CY - Hamburg, Germany DA - 27.10.2025 KW - Grazing incidence KW - X-ray scattering KW - Experimental methodology PY - 2025 AN - OPUS4-64694 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. A1 - Lange, Axel A1 - Harwardt, Michael A1 - Hentschel, Manfred P. T1 - X-Ray refraction computed tomography for NDE of lightweight materials T2 - Deutsche Tagung für Forschung mit Synchrotronstrahlung, Neutronen und Ionenstrahlen an Großgeräten 2006 (SNI2006) CY - Hamburg, Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-15836 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bauer, L. J. T1 - Integrated X-ray techniques for durable dental interzones N2 - Nowadays, teeth are not directly extracted when tooth decay occurs. Whenever treatment of the affected tooth is possible, the carious region is replaced with a suitable filling. The filling material differs according to the position and size of the cavity. Since the restoration will remain in the tooth for many years, a well adhering and sealing interface between filling and healthy tooth tissue is needed. There is continuous development of new materials, but intensive studies of this complex interface between filling and healthy tooth are still lacking. Little is known about possible diffusion of elements from dental materials into healthy tooth tissue forming a socalled interzone with specific chemical and structural properties. The combination of different analytical X-ray methods at synchrotron radiation facilities and in the laboratory enables an extensive structural and elemental investigation of such interzones. While X-ray fluorescence techniques and X-ray absorption spectroscopy yield elemental distributions and localized chemical speciation, X-ray diffraction, refraction and computed tomography add structural information to the full 3D analysis of model and real life tooth samples. Within two DFG funded projects, we develop adapted methodologies and investigate micro-chemical changes in interzones which we hypothesize may lead to sclerotic dentine. T2 - Workshop of the Helmholtz association: MML - "From Matter to Materials and Life" CY - Berlin, Germany DA - 22.11.2021 KW - Dental materials KW - X-ray refraction KW - Computed tomography KW - X-ray fluorescence PY - 2021 AN - OPUS4-54097 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - Excellence of refraction enhanced micro-CT for materials characterization T2 - 27. BESSY Users Meeting CY - Berlin, Germany DA - 2008-12-04 PY - 2008 AN - OPUS4-18388 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Manke, I. T1 - Three-dimensional imaging of magnetic domains T2 - HZB User Meeting 2011 CY - Berlin, Germany DA - 2011-11-30 PY - 2011 AN - OPUS4-25075 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sturm, R. T1 - Refraktions-Radiographie - eine neue Methode zur Evaluation von Alterungsmechanismen wurzelkanalbehandelter Zähne N2 - Ziel der Untersuchung: Evaluation der Eignung der Refraktions-Tomographie zur Analyse von Alterungserscheinungen innerhalb von adhäsiv verankerten Materialien vor und nach künstlicher Probenalterung. Material und Methode: Vier humane mittlere Oberkieferfrontzähne wurden wurzelkanalbehandelt und ausgedehnte Klasse IV Defekte der Krone mit einer Aufbaufüllung aus dualhärtendem Komposit (Rebilda DC, VOCO) und einem Glasfaserstift (Rebilda Post, VOCO) restauriert. Alle Proben wurden feucht gelagert und in einer Synchrotron-Einrichtung (BAMline, BESSY II, HZB) mit einer Pixelgröße von 4,08 µm gescannt. Für diese Synchrotron-Refraktions-Tomographie (SXRCT) muss zunächst der Analysatorkristall (AK) zu einer Bragg-Reflexion (Beugung) angeregt werden, um eine SXRCT durchzuführen. Die SXRCT wird mit einer Transmissions-Tomographie (ohne AK) verrechnet. Darauf folgte eine künstliche Probenalterung mit 400.000 Kau- und 3.000 Thermozyklen (50N, 5-55°C). Anschließend wurden die Proben ein weiteres Mal gescannt. Die Datensätze beider SXRCT wurden mittels des „filtered back projection“ Algorithmus rekonstruiert, mit einer Bildanalyse-Software aufeinander registriert und ausgewertet. Hierdurch konnten die Veränderungen initialer Schädigungen analysiert werden. Ergebnisse: Alle 4 Proben zeigten in den Scans Veränderungen des inneren Gefüges und an Grenzflächen nach Belastung. Es zeigten sich Ansammlungen von Wasser innerhalb eingeschlossener Hohlräume, subkritisches Risswachstum, Ausdehnung des Komposit und Quellung des Glasfaserstiftes um 0,4%. In den SXRCT Aufnahmen waren außerdem Dentintubuli, die bei Auflösungen von 4,08 µm sonst nicht deutlich sichtbar sind darstellbar. Dadurch konnte Eindringen von Wasser in die Tubuli im Anschluss an die Alterung belegt werden. Zusammenfassung: SXRCT bietet die Möglichkeit, trotz einer vergleichbar geringen Auflösung, kleinste Strukturen und Veränderungen abzubilden. Dies ermöglicht unter anderem die detaillierte Analyse relativ großer Proben, wie eines vollständigen Zahnes in einem Scanvorgang. T2 - 5. Gemeinschaftstagung Zahnerhaltung CY - Munich, Germany DA - 23.11.2023 KW - Röntgenrefraktion KW - Computertomographie KW - Zahnmedizin PY - 2023 AN - OPUS4-59103 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - Visualization of flexural loaded Integrated Circuits T2 - BESSY Users Meeting 2006 CY - Berlin, Germany DA - 2006-12-07 PY - 2006 AN - OPUS4-14199 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Laquai, René A1 - Schaupp, Thomas T1 - 3D Imaging of Hydrogen Assisted Cracking in Metals using Refraction Enhanced Synchrotron CT N2 - Hydrogen in metals can cause a degradation of the mechanical properties with possible subsequent hydrogen assisted cracking (HAC). Though, the mechanism of HAC is not completely understood yet and thus suitable methods for in situ investigations to characterise the crack formation are needed. X-ray computed tomography (CT) is a well-known tool for analysing these properties. However, the effective resolution of the detector system limits the detection of small defects by CT. Analyser based imaging (ABI) takes advantage of x-ray refraction at interfaces between volumes of different density, i.e. of cracks, pores, inclusions, etc., within the sample to detect defects smaller than the resolution of the detector system. In this study, measurements on an aluminium alloy weld showed that ABI allows us to resolve the 3D structure of cracks undetected by absorption based CT. Prospective investigations will analyse HAC in steels. T2 - International Symposium Non-Destructive Testing in Civil Engineering CY - Berlin, Deutschland DA - 15.09.2015 PY - 2015 AN - OPUS4-34208 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Bernd R. T1 - Synchroton based Refraction Enhanced Micro CT for Non-Destructive Materials Characterization T2 - Materials Science and Engineering MES 08 CY - Nuremberg, Germany DA - 2008-09-01 PY - 2008 AN - OPUS4-18526 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Y. T1 - Fluid inclusion microthermometry in stalagmites: The next stage of development N2 - Fluid inclusion microthermometry is one of the analytical approaches that has been proposed for speleothem-based temperature reconstructions. The proxy of this paleothermometer is the density of drip water relicts that have been enclosed in microscopic fluid inclusions during speleothem growth. Prior to microthermometric analyses, the monophase liquid inclusions need to be transferred from a metastable liquid into a stable liquid-vapour two-phase state by stimulating vapour bubble nucleation by means of single ultra-short laser pulses. Subsequent microthermometric analyses determine the temperature at which the vapour bubble disappears again, the so-called liquid-vapour homogenisation temperature (Th(obs) ). The observed homogenisation temperature depends not only on the water density but also on the inclusion volume. In order to determine the water density, a thermodynamic model is used that takes account of the effect of surface tension on Th(obs) to calculate Th∞. This is the corresponding homogenisation temperature at saturation pressure that determines the water density and defines the formation temperature of the fluid inclusion. The analytical precision of the method ranges between 0.1 and 0.3 °C depending on the size of the inclusions. T2 - Climate Change: The Karst Record IX (KR9) CY - Innsbruck, Austria DA - 17.07.2022 KW - Fluid inclusion microthermometry KW - Stalagmites KW - Synchrotron radiation KW - X-ray imaging KW - X-ray diffraction PY - 2022 AN - OPUS4-55344 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Winkler, Nicolas P. T1 - Heterogeneous Sensor Networks: Challenges and Insights from an Industrial Scenario N2 - Monitoring airborne pollutants is critical for occupational health, particularly in industrial environments where workers are exposed to hazardous emissions. Traditional measurements are typically limited to single-day campaigns, resulting in extremely sparse temporal data. Low-cost sensor networks offer a way to increase spatial and temporal resolution but are limited by issues of accuracy and reliability. To address this, we present a wireless heterogeneous sensor network that integrates low-cost stationary nodes with high-quality sensors on mobile platforms, including ground and aerial robots. We deploy this system in a hot rolling mill facility and evaluate its performance under real-world conditions. Field experiments reveal dynamic pollutant patterns, such as altitude-dependent PM2.5 gradients and temperature fluctuations. By introducing synchronized “rendezvous” events between mobile and stationary nodes, we demonstrate correlation capabilities of sensors. Our spatiotemporal analysis shows that, despite limitations of mobile sensing, strategically combining heterogeneous data sources enables capturing pollutant dynamics in complex industrial settings. T2 - IEEE SENSORS 2025 CY - Vancouver, BC, Kanada DA - 19.10.2025 KW - Environmental monitoring KW - Sensor data fusion KW - Sensor system networks PY - 2025 AN - OPUS4-64506 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hauschildt, Charlotte T1 - Rethinking PFAS Analysis: How Far Can GC-MS Take Us? N2 - PFAS (per- and polyfluoroalkyl substances) represent a broad and complex class of synthetically produced chemicals with estimated 10,000 different compounds. Due to their persistence, toxicity, and widespread occurrence, PFAS have been a major focus of scientific research over the past decade, particularly in the areas of identification, quantification, toxicity, and potential pathways into the environment . Effective monitoring of PFAS requires highly sensitive analytical techniques. Currently, liquid chromatography - (tandem) mass spectrometry (LC-MS(/MS)) remains the gold standard for PFAS detection, offering a significantly extended detection range compared to gas chromatography-mass spectrometry (GC MS). However, to expand accessibility and enable more process-independent testing, GC-MS-based approaches are being actively developed and optimized . Although several analytical methods exist for detecting fluorinated contaminants in food, advancing their reliability, sensitivity, and applicability remains a critical challenge. Further optimization of GC-MS methodologies is essential to align with or extend beyond LC-MS techniques, enhancing their effectiveness in food and packaging analysis. Ultimately, these developments will contribute to improved food safety. This research is part of the EU project 23IND13 ScreenFood, which aims, as one of its objectives, to develop sensitive analytical methods for improved identification and quantification of various PFAS - both currently regulated and emerging. Various analysis techniques are to be tested and compared for the comprehensive identification and sensitive quantification of PFAS used in FCM. This poster will present improved GC-MS methods for the detection and quantification of various PFAS classes and will give first insights into the analysis of food contact materials (e.g. paper-based FCM) with GC-MS. The project (23IND13, ScreenFood) has received funding from the European Partnership on Metrology, co-financed from the European Union’s Horizon Europe Research and Innovation Programme and by the Participating States. T2 - PFAS – Challenges and Scientific Perspectives in Human Health Risk Assessment CY - Berlin, Germany DA - 08.10.2025 KW - Per- and Polyfluoroalkyl Substances (PFAS) KW - Gas Chromatography - Mass Spectrometry (GC-MS) KW - EU Project KW - Derivatization methods KW - Food Contact Material (FCM) PY - 2025 AN - OPUS4-64516 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Seifert, Lando A1 - Fabian, Maxine T1 - Wasserstoffinduzierte Spannungsrisskorrosion Beispiel: Spannblockverfahren N2 - Bei der wissenschaftsjournalistischen Veranstaltung WISSENSWERTE 2025 in Berlin stellte die BAM die Aktivitäten zu den Themen Brückensicherheit und Bauwerks-Monitoring vor. Der Beitrag zur wasserstoffinduzierten Spannungsrisskorrosion wurde am Beispiel des Spannblockverfahrens erläutert, einem Spannverfahren für Brücken. Die Schadinitiierung im gezeigten Beispiel ereignete sich in der Bauphase zwischen dem Vorspannen der Drähte und dem Verpressen mit Mörtel. In dieser Phase wirken drei wesentliche Einflüsse zusammen und lösen Spannungsrisskorrosion aus, welche irreversible Schädigungen in Spannbetonbrücken induzieren können. T2 - WISSENSWERTE 2025 CY - Berlin, Germany DA - 29.09.2025 KW - Spannstahl KW - Spannungsrisskorrosion KW - Schwefeldioxid KW - Korrosion PY - 2025 AN - OPUS4-64515 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf J. T1 - Evaluating the Normalization Potential of Anthropogenic Markers in Wastewater: Monitoring Influents of German Treatment Plants by ELISA N2 - Wastewater-based epidemiology (WBE) has emerged as a vital tool for pandemic preparedness, offering early warning capabilities and supporting public health interventions. In Germany, combined sewer systems are prevalent, leading to fluctuations in wastewater volume and com-position due to rainwater inflow, especially through street drains. This variability complicates the quantitative measurement of pathogens and pollutants in wastewater. While human excretion provides constant inputs, these parameters are often non-specific, lost, or degraded during transport. Pharmaceuticals—such as carbamazepine, diclofenac, and clarithromycin—as well as commonly consumed substances like caffeine, exhibit sufficiently high concentrations and good chemical stability in wastewater and are not subject to seasonal fluctuations. Antibody-based methods, particularly Enzyme-Linked Immunosorbent Assays (ELISA), offer a cost-effective alternative to complex chromatographic techniques for monitoring anthropogenic markers. They demonstrate superior normalization quality compared to the frequently used quantitative PCR-based marker Pepper mild mottle virus (PMMoV). T2 - 6th International Conference on Risk Assessment of Pharmaceuticals in the Environment - ICRAPHE CY - Aveiro, Portugal DA - 20.10.2025 KW - Carbamazepin KW - Koffein KW - Spurenstoffe KW - Anthropogener Marker Immunoassay PY - 2025 AN - OPUS4-64432 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gumenyuk, Andrey T1 - Reducing Noise Impact on Strain Accuracy Measurement by Optical Flow and DIC for Laser Welding Applications N2 - In recent years, non-contact methods for in situ local strain measurement during welding processes have gained increasing importance. This trend is driven by advancements in both measurement technology—such as improved camera systems, illumination sources, and X-ray techniques—and in image processing algorithms for strain evaluation. Laser beam welding poses specific challenges for optical strain measurement due to various types of process-related emissions that impair measurement accuracy. In this study, two different algorithms were applied to analyze the local strain field in the solidification zone during laser welding of AISI 310S stainless steel: the inverse compositional Gauss-Newton algorithm for Digital Image Correlation (DIC) and the Lucas-Kanade method for optical flow analysis [1]. Video sequences were recorded under Controlled Tensile Weldability Test (CTW) conditions, in which the specimens were subjected to a defined external tensile load during welding. This setup consistently induced solidification cracking at the material surface, which could be observed in the video recordings. To enhance the robustness and accuracy of the strain evaluation, various noise reduction techniques were implemented. These included identification and mitigation of erroneous frames caused by process emissions and dynamic disturbances. The resulting strain distributions showed high repeatability across multiple experiments and were in good qualitative agreement with predictions from high-fidelity finite element simulations. [2]. T2 - AJP 2025 CY - Coimbra, Portugal DA - 16.10.2025 KW - Laser beam welding KW - Solidification cracking KW - Optical measurement PY - 2025 AN - OPUS4-64428 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vergin, Chantal C. T1 - Entwicklung von Antikörpern gegen Mykotoxine und ihre Anwendung in immunchemischen Verfahren N2 - Die Gewährleistung der Lebensmittelsicherheit stellt ein zentrales und aktuelles Thema in unserer Gesellschaft dar und ist im Lebensmittelrecht gesetzlich verankert. Pilzgifte, sogenannte Mykotoxine, sind sekundäre Stoffwechselprodukte, die von Schimmelpilzen gebildet werden. Durch den Befall von Lebensmitteln können diese Kontaminanten in die Nahrung und somit in die Nahrungskette gelangen, wodurch sie ein ernstes Gesundheitsrisiko für Mensch und Tier darstellen. Aus diesem Grund hat die Europäische Kommission unter anderem die Verordnung (EU) 2023/915 erlassen, welche Höchstwerte für bestimmte Mykotoxine in Lebensmitteln festlegt. Derzeit sind etwa 25 % der Lebensmittel mit Mykotoxinen oberhalb der gesetzlich vorgeschriebenen Grenzwerte belastet. Um derartige Überschreitungen zu vermeiden, sind regelmäßige Kontrollen unerlässlich. Die derzeit verfügbaren analytischen Verfahren, die überwiegend auf chromatographischen Methoden wie LC-MS/MS basieren, werden von der Lebensmittelindustrie als unzureichend angesehen, weil sie technisch aufwendig, arbeitsintensiv und nicht vor Ort – d.h. an Verarbeitungs- und Produktionsstandorten –einsetzbar sind. Eine Möglichkeit der Verbesserung ist der Einsatz von Immunoassays, deren Anwendung in der Medizin weit verbreitet sind. Grundvoraussetzung für die Entwicklung solcher Assays ist jedoch die Verfügbarkeit spezifischer Antikörper. Unser Schwerpunkt in diesem Projekt liegt auf der Entwicklung monoklonaler, hochaffiner und hochselektiver Antikörper gegen Mykotoxine, für die bislang keine oder nur polyklonale beziehungsweise in ihrer Spezifität unzureichende Antikörper existieren. Ziel ist die Herstellung von Antikörpern gegen Patulin, Alternaria-Toxine sowie Mutterkornalkaloide, um diese in Schnelltests und vor-Ort-Analytiksystemen einsetzen zu können. Ein Fokus liegt auf der Gruppenselektivität der Antikörper im Hinblick auf die verschiedenen Mutterkornalkaloide. Für die Immunisierung der Mäuse werden – je nach Mykotoxin – heterologe oder homologe Haptene verwendet. Zur Sicherstellung der Monoklonalität kommen Methoden wie die Begrenzungsverdünnung sowie die antigenspezifische fluoreszenzaktivierte Zellsortierung zum Einsatz. Die im Projekt gewonnenen Antikörper sollen zur Erweiterung des bestehenden Mykotoxin-Testkits der SAFIA Technologies GmbH eingesetzt werden, um eine zuverlässige Detektion von Mykotoxinen in Lebensmitteln zu gewährleisten und so einen Beitrag zur Verbesserung der Lebensmittelsicherheit zu leisten. Es werden der verfolgte Ansatz und die bisher erreichten Ergebnisse vorgestellt. T2 - 53. Deutsche Lebensmittelchemietage CY - Halle (Saale), Germany DA - 22.09.2025 KW - Antikörper KW - Biosensorik KW - Mykotoxine KW - Immunoassay PY - 2025 AN - OPUS4-64458 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Vergin, Chantal C. T1 - Development of antibodies against mycotoxins and their application in immunochemical methods N2 - Food safety is a central and topical issue in our society and is governed by food law. Mycotoxins are secondary metabolic products formed by molds. These contaminants can enter food and thus the food chain through infestation, posing a serious health risk to humans and animals. For this reason, the European Commission has issued Regulation (EU) 2023/915, which sets maximum levels for certain mycotoxins in food. Currently, around 25 % of foodstuffs are contaminated with mycotoxins above the legally prescribed limits. Regular checks are essential to prevent such exceedances. The analytical methods currently available, mainly based on chromatographic techniques such as LC-MS/MS, are considered inadequate for on-site use – i.e., at processing and production facilities in the food industry – because they are technically complex and labor-intensive. One possible improvement is the use of immunoassays, which are widely accepted and employed in medical diagnostics. However, a basic prerequisite for developing such assays is the availability of specific antibodies. Our focus in this project is the development of high-affinity, highly selective monoclonal antibodies against mycotoxins for which either no antibodies, only polyclonal antibodies, or antibodies with insufficient specificity are currently available. The goal is to generate antibodies targeting patulin, Alternaria toxins, and ergot alkaloids for use in rapid tests and on-site analytical systems. A key aspect is the group selectivity of the antibodies with regard to the various ergot alkaloids. Depending on the mycotoxin, heterologous or homologous haptens are used to immunize mice. To ensure monoclonality, we apply limiting dilution and antigen-specific fluorescence-activated cell sorting (FACS) during the selection process. The antibodies developed will be used to expand SAFIA Technologies GmbH’s existing mycotoxin test-kit, enabling reliable detection of mycotoxins in food and thereby contributing to improved food safety standards. We will showcase our approach along with the results achieved so far T2 - 5th European Biosensor Symposium CY - Tarragona, Spain DA - 26.10.2025 KW - Antibodies KW - Biosensor KW - Immunoassay KW - Mycotoxins PY - 2025 AN - OPUS4-64459 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Griesche, Axel T1 - In situ Measurement of Hydrogen in Steel using Laser-induced Breakdown Spectroscopy (LIBS) N2 - Laser-induced breakdown spectroscopy (LIBS) is an analysis technique that allows contactless and fast in situ measurements of hydrogen in welded steels. The surface does not need necessarily be prepared as the laser can ablate material before the measurement. Depth profiling, point measurements as well as scanning of areas (mapping) can be utilized and automated. The method can be used for quantitative measurements, which requires a calibration with standards of similar material containing known hydrogen concentrations. LIBS is a candidate for ISO 3690, determination of diffusible hydrogen in martensitic, bainitic, and ferritic steel weld metal using arc welding processes with filler material. The capability of the method is shown in a hydrogen diffusion experiment. T2 - Tagung Steel & Hydrogen 2025 CY - Genth, Belgium DA - 14.10.2025 KW - LIBS KW - Hydrogen measurement KW - Laser spectroscopy KW - Steel PY - 2025 AN - OPUS4-64451 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fey, Gero T1 - Experimental Determination of CCT Diagrams and Simulated HAZ Microstructures in Low-Alloy Pipeline Steel for H2 Transportation N2 - This study investigates the suitability of low-alloy pipeline steels for hydrogen transportation, focusing on the development of weld microstructures. Previous research has been limited by a deficiency in the understanding of how different microstructural components respond to trapped hydrogen. By developing Continuous Cooling Transformation (CCT) diagrams through dilatometry analysis, this study explores the impact of t8/5-cooling times (the time between 800 °C and 500 °C) on the microstructure and mechanical properties of the HAZ compared to the base material. The findings provide valuable insights into how cooling times influence transformation temperatures and microstructure development, which, in turn, affect hydrogen diffusion and absorption. These findings establish a foundation for future investigations into hydrogen's impact on weld microstructures, including experimental studies, with the aim of optimizing welding practices and enhancing resistance to hydrogen-assisted cracking. Ultimately, this research contributes to improving the safety and reliability of hydrogen transportation systems in commonly used industrial pipeline steels. T2 - 5th International Conference on Metals and Hydrogen CY - Ghent, Belgium DA - 14.10.2025 KW - Dilatometry KW - L360NE KW - X52 KW - Heat-affected zone KW - Pipeline Steel KW - CCT PY - 2025 AN - OPUS4-64470 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yu, Jialu A1 - Oelze, Marcus A1 - Traub, Heike A1 - Koerdt, Andrea A1 - Meermann, Björn A1 - Vogl, Jochen T1 - Isotopic and elemental screening analysis of mic using LASS-MC-ICP-MS/HR-ICP-MS N2 - MIC (Microbiologically influenced corrosion) is a type of corrosion in which the deterioration of metals occurs due to the presence and activity of microorganisms, which can influence corrosion directly or indirectly. These microorganisms cause roughly 20% of corrosion failures. The aim of this project is to develop an online analysis coupled with LA-MC-ICP-MS and ICP-ToF-MS. T2 - BAM workshop CY - Berlin, Germany DA - 14.03.2024 KW - MIC KW - Laser ablation KW - MC-ICP-MS KW - Fe isotope ratios PY - 2024 AN - OPUS4-61709 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea T1 - Technical challenges for the investigation of Microbiologically influenced corrosion under laboratory conditions across several sectors N2 - Microbiologically influenced corrosion MIC occurs in different sectors, under various conditions and can significantly contribute to material degradation. The most convincing effect can be observed with sulphate-reducing bacteria (SRB). There are many stakeholders who do not need to be convinced of this as there is ample scientific evidence clearly showing that SRBs corrode metal. However, many believe this is solely due to the produced H2S. Fewer people are aware that SRBs also have other mechanisms that can lead to corrosion, such as electrical MIC on metal (direct electron uptake from the metal used as electron donor). Despite this, many sectors or industries remain skeptical in several areas. When considering other classes or species, the skepticism increases even more. The reason is simple: microbiologist cannot consistently prove MIC on laboratory scale for all corrosive microorganisms. In contrast to materials sciences, where experiments can be narrowed down to a limited number of parameters, microbiology is too complex to simulate simply in the lab. Several factors are mandatory for the growth of microorganisms, consequently increasing the number of parameters. Even when making the system more complex, there are still unknown species in the field, whose growth conditions are not yet understood. We know via 16S rRNA analysis that the species is present, but that is all we know. If these samples are enriched in the lab, many species will not survive and their impact on the whole community cannot be investigated. Therefore, lab tests related to MIC works only for a certain number of microorganisms. This means the key-result for other disciplines are missing, and important numbers for calculating the lifespan of a material can only be provided with limited accuracy. This is neither satisfying nor useful for engineers, material scientist or similar professionals, and it is understandable. However, MIC occurs, and we need to address it in our infrastructure or other important areas. With this presentation, I aim to show the currently available techniques for testing on a laboratory scale. I will use SRBs and methanogenic archaea as examples to highlight the advantages and disadvantages of each method and point out where improvements are needed. The examples will be cross-sectoral and applicable to other sectors as well. This talk will highlight the currently existing challenges of testing MIC in the laboratory and may help generate creative solutions. T2 - MICxUS 2025 CY - Nicosia, Cyprus DA - 21.01.2025 KW - MIC KW - Biocorrosion KW - Laboratory testing KW - Interdisziplinarity KW - Microorganisms PY - 2025 UR - https://www.unic.ac.cy/ehresearch/micxus2025/#tab-98dc74f32bf3b8f95bd AN - OPUS4-63725 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Olbrich, Adelina-Elisa T1 - Deciphering microbiological influenced corrosion processes on steel with single cell-ICP-ToF-MS N2 - Microbiologically influenced corrosion (MIC) is a highly unpredictable process dictated by the environment, microorganisms, and the respective electron source. Interaction pathways between cells and the metal surface remain unclear. The development of this novel single cell-inductively coupled plasma-time of flight-mass spectrometry analytical method and a MIC-specific staining procedure facilitate the investigation of steel-MIC interactions. With this it is possible to analyze the multi-elemental fingerprint of individual cells. The detection method revealed elemental selectivity for the corrosive methanogenic archaeal strain Methanobacterium-affiliated IM1. The interface between material and environmental analysis thus receives special attention, e.g., when considering MIC on solid steel. Hence, the possible uptake of individual elements from different steel samples is investigated. Results showed the cells responded at a single-cell level to the different types of supplemented elements and displayed the abilities to interact with chromium, vanadium, titanium, cobalt, and molybdenum from solid metal surfaces. The information obtained will be used in the future to elucidate underlying mechanisms and develop possible material protection concepts, thus combining modern methods of analytical sciences with materials research. References. T2 - Future WiNS CY - Berlin, Germany DA - 07.12.2022 KW - Single cell KW - Microbiological influenced corrosion MIC KW - Sc-ICP-ToF-MS KW - Method development KW - Ir DNA staining approach KW - Carbon steel corrosion PY - 2022 AN - OPUS4-56567 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koerdt, Andrea A1 - An, Biwen Annie T1 - Microbial corrosion coupled to methanogenesis by strains from different environments N2 - Microbiologically influenced corrosion (MIC) of iron is usually attributed to sulfate-reducing microorganisms, either chemically (formation of hydrogen sulfide) or electrically (direct electron uptake). Methanogenetic Archaea are also known to be involved in iron corrosion, forming a multi-species biofilm on corroding metallic structures. However, mechanistic details and kinetics of the overall process in methanogen-induced MIC are poorly understood. T2 - Beirat Material CY - Berlin, Germany DA - 26.04.2018 KW - Corrosion KW - Methanogens KW - Archaea KW - Implants KW - Biofilm PY - 2018 AN - OPUS4-45112 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Temgoua, Ranil C. T. T1 - Mimicking Environmental Degradation of Carbendazim Pesticide by EC-MS N2 - Currently, there is a growing interest in the study of environmental degradation pathways of organic contaminants such as pesticides, with the objective to better understand their potential risk for environmental systems and living organisms. In this context, DFT (conceptual density functional theory) and predictive methods may systematically be used to simplify and accelerate the elucidation of environmental degradation. We report herein the electrochemical behavior/degradation of the carbendazim (CBZ) fungicide widely used to treat cereal and fruit crops. Oxidative degradation of CBZ was studied using an electrochemical flow-through cell directly coupled to a mass spectrometer for rapid identification of CBZ degradation products. The structural elucidation of CBZ oxidation products was based on retention time, accurate mass, isotopic distribution and fragmentation pattern by using LC-HRMS an LC-HRMS2. The most important chemical reactions found to occur in the transformation of CBZ were hydrolysis and hydroxylation. EC-LC-MS and EC-MS analysis has made it possible to highlight the identification of degradation products of CBZ. In addition to previously known transformation products common to those observed during environmental degradation (monocarbomethoxyguanidine, benzimidazole-isocyanate, 2-aminobenzimidazole, hydroxy-2-aminobenzimidazole, hydroxycarbendazim, CBZ-CBZ dimer), two new degradation products were identified in this work: a quinone imine and a nitrenium ion. Electrochemistry mass spectrometry hyphenated techniques represent an accessible, rapid and reliable tool to elucidate the oxidative degradation of CBZ, including reactive degradation products and conjugates. T2 - 36th Topical Meeting of the International Society of Electrochemistry CY - Šibenik, Croatia DA - 26.05.2024 KW - Electrochemistry KW - Mass Spectrometry KW - Emerging pollutants KW - Transformation products PY - 2024 AN - OPUS4-61062 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nirmalananthan-Budau, Nithiya T1 - Quantification of surface groups on core-shell polymer particles with optical spectroscopy N2 - Polymer nanoparticles (NPs) are of increasing importance for a wide range of applications in the material and life sciences. This includes their use as carriers for dye molecules and drugs, multichromophoric reporters for signal enhancement strategies in optical assays, targeted probes in bioimaging studies, and nanosensors.[1] Application-relevant properties of such NPs include their size, morphology, colloidal stability, and ease of surface functionalization with e.g., sensor molecules and targeting ligands. Many of these features as well as the interaction of NPs with their microenvironment are closely linked to the knowledge of the chemical nature and total number of surface groups as well as the number of surface functionalities accessible for subsequent coupling reactions of differently sized ligands, biomolecules or reporter molecules. This underlines the importance of simple, robust, reliable, and validated methods, which can be employed for the characterization of a broad variety of particle systems independent of their optical properties, i.e., scattering or the presence of encoding dyes.[2] In this respect, we assessed a variety of conventional and newly developed colorimetric or fluorometric labels for the optical surface group analysis, utilizing e.g., changes in intensity and/or color for signal generation.[3] Moreover, novel cleavable and multimodal reporters were developed which consist of a reactive group, a cleavable linker, and an optically active moiety, chosen to contain also heteroatoms for straightforward method validation by elemental analysis, ICP-OES, ICP-MS or NMR. In contrast to conventional labels measured bound at the particle surface, which can favor signal distortions by scattering and encoding dyes, cleavable reporters can be detected colorimetrically or fluorometrically both attached at the particle surface and after quantitative cleavage of the linker in the transparent supernatant after particle removal e.g., by centrifugation. Here, we present first results obtained for the optical quantification of carboxylic and amino groups on a series of self-made NPs with different types of labels and compare their potential and drawbacks for surface group analysis. T2 - Jubiläumskongress "Chemie bewegt" 2017 CY - Berlin, Germany DA - 10.09.2017 KW - Nanoparticle KW - Surface groups KW - Optical assays KW - Carboxy and amin PY - 2017 N1 - Geburtsname von Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. - Birth name of Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. AN - OPUS4-43212 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scholtz, Lena T1 - Luminescent, nanoparticle-loaded polymer microparticles - comparing synthesis routes N2 - Our comparison showed that the route used for the synthesis of luminescent, NP-loaded PSMPs can play a significant role for the luminescence properties, as well as the number of accessible SFGs, and hence subsequent functionalization. This should be considered for future applications. T2 - Bunsen-Tagung 2023 CY - Berlin, Germany DA - 05.06.2023 KW - Fluorescence KW - Polymerization KW - Microbeads KW - Quantum dots KW - Comparison PY - 2023 AN - OPUS4-57628 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brodehl, Antje T1 - Biotransformation des Mykotoxins Zearalenon durch lebensmitteltechnologisch relevante Pilzstämme T2 - 43. Deutscher Lebensmittelchemikertag CY - Giessen, Germany DA - 2014-09-22 PY - 2014 AN - OPUS4-31610 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Certification of new reference materials - Fusarium mycotoxins in food T2 - 39. Deutscher Lebensmittelchemikertag CY - Stuttgart, Germany DA - 2010-09-20 PY - 2010 AN - OPUS4-20974 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Fusarium mycotoxins in food - Development of new reference materials T2 - ANALYTICA CY - Munich, Germany DA - 2010-03-23 PY - 2010 AN - OPUS4-20943 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Bricks, J. T1 - Synthesis and spectroscopic properties of a new sterically hindered 4,4'-(donor)-(donor)'-substituted biphenyl T2 - XX. Ukrainian conference on organic chemistry CY - Odessa, Ukraine DA - 2004-09-21 PY - 2004 AN - OPUS4-4484 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Spectroscopy, stability and cytotoxicity studies of a family of asymmetric cyanine dyes: Identification of new diagnostic tools T2 - Molekulare Bildgebung 08 (MoBi08) CY - Dresden, Germany DA - 2008-06-19 PY - 2008 AN - OPUS4-18054 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Effects of Surface Modification on Luminescence and Colloidal Stability of Water Dispersible Upconverting Nanoparticles T2 - Deutschen Biosensor Symposium 2015 CY - München, Germany DA - 2015-03-11 PY - 2015 AN - OPUS4-33663 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Würth, Christian T1 - Integrating-sphere based photoluminescence (PL) measuring system for the determination of absolute PL quantum yields: Potential and limits T2 - MAF CY - Budapest, Hungary DA - 2009-09-06 PY - 2009 AN - OPUS4-20426 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - Preparation, Characterization, and Bioanalytical Applications of Fluorescent Nano- and Micrometer-sized Particles T2 - Tag der Chemie CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21550 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Gold Nanoparticle-Catalyzed Uranine Reduction T2 - Anakon 2015 CY - Graz, Austria DA - 2015-03-23 PY - 2015 AN - OPUS4-33654 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mekonnen, Tessema Fenta T1 - Investigating metabolic transformation processes of pesticides N2 - Within a class of agrochemical residues, pesticides are significant concern due to their various adverse effects on people, animals and the environmental systems. Once they entered to food or to the environment, the parent compound is transformed to metabolites which have different toxicity profiles. Activities like food cooking and waste water treatment (WWT) may lead to produce more toxic metabolites than the parent substances. Online coupling of electrochemistry with liquid chromatography mass spectrometry (EC-HPLC-MS) is one of the most promising and powerful techniques for metabolite studies which exploited widely for pharmaceuticals so far [1]. However, data on the application of EC-HPLC-MS to simulate environmental transformation products, the fate of contaminants and their metabolic pathways are rare. The oxidation of analyte of interest on the EC, separate the metabolites on HPLC and identifying them by MS gives enormous advantages to identify the contaminants transformation products [2]. Thus, applying this technique (EC-MS, EC-HPLC-MS, and HPLC-EC-MS) for transformation products of pesticide residues is urgently needed. The main interest of this study will be investigating the electrochemical oxidative degradation products, simulating to in-vitro metabolites and transformation processes of selected pesticides in food and environmental samples. The parent pesticides’, like carbamates and abamectin, oxidation by EC, product metabolites identification and their fates will be discussed using electrochemistry coupled to HPLC-MS techniques. T2 - 44. Deutscher Lebensmittelchemikertag CY - Karlsruhe, Germany DA - 14.09.2015 KW - Pesticides KW - EC-MS KW - Transformation products PY - 2015 AN - OPUS4-34953 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kage, Daniel T1 - Fluorescence lifetime multiplex flow cytometry system (FliMFlow-MultiLife) N2 - Flow cytometry is a common tool in biological research and clinical analyses. In current developments, there are two different tendencies of interest. Firstly, we face the need for analysis methods that are capable of addressing more and more involved analysis tasks, i.e., an increasing number of fluorescent codes and markers is required. Secondly, low-cost diagnostic tests, e.g. in disease recognition, are needed in routine application. Lifetime encoding could be an attractive alternative to commonly applied color (spectral) encoding. By combining spectral and lifetime multiplexing, the number of simultaneously detectable codes might be increased by adding lifetime codes to the parameter space. Otherwise, instrumentation costs could be lowered using only lifetime encoding and thus avoiding costly excitation light sources and detectors. Here, we report on our recent progress in time-resolved flow cytometry using dye-stained lifetime-encoded polymer microparticles as a model system. We could show that the discrimination of two lifetime codes is feasible. Moreover, the simultaneous detection of a spectrally different ligand fluorescence signal excited at the same wavelength as the lifetime code fluorescence could be demonstrated. T2 - Photonik in den Lebenswissenschaften CY - Berlin, Germany DA - 09.11.2016 KW - Flow cytometry KW - Fluorescence KW - Life sciences KW - Lifetime encoding KW - Polymer particles PY - 2016 AN - OPUS4-38249 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Design of Highly Fluorescent Conjugates T2 - MOBI 2013 CY - Heidelberg, Germany DA - 2013-10-28 PY - 2013 AN - OPUS4-29577 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Monte, Christian T1 - Linking Fluorescence Spectroscopy to the Scale of Spectral Sensitivity - The BAM Reference Fluorometer T2 - Optical Diagnostics at Optics & Photonics 2005 CY - San Diego, CA, USA DA - 2005-07-31 PY - 2005 AN - OPUS4-7395 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scholz, Norman T1 - Spectroscopic Studies of Nanoscale NIR-emissive Sensors and a comparison of CMC determinations T2 - Potsdam Days Bioanalysis 2015 CY - Potsdam, Brandenburg DA - 2015-11-04 PY - 2015 AN - OPUS4-34900 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Neues Analysenverfahren zur Ermittlung aktueller Acrylamidbelastungen in ausgewählten Lebensmitteln T2 - 40. Deutscher Lebensmittelchemikertag 2011 CY - Halle (Saale), Germany DA - 2011-09-12 PY - 2011 AN - OPUS4-23296 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - On a method to completely recover mineral oil dispersed in water T2 - "Tag der Chemie", FU Berlin CY - Berlin, Germany DA - 2001-11-07 PY - 2001 AN - OPUS4-5830 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Cadmium und Acrylamid in Kakao - Entwicklung neuer zertifizierter Referenzmaterialien N2 - Kakao ist weltweit ein gerade bei Kindern sehr beliebtes Lebensmittel, das in ver-schiedensten Variationen konsumiert wird und welchem viele gesundheitsfördernde Eigenschaften zugesagt werden. Allerdings können mit dem Konsum von Kakao oder Kakaoprodukten auch negative Aspekte einhergehen, die u.a. auf Rückstände (Cadmium – Aufnahme durch Kakaobaumwurzeln) sowie auf Prozesskontaminanten (z. B. Acrylamid) zurückzuführen sind. Die Europäische Behörde für Lebensmittelsicherheit (EFSA) hat für Cadmium im Jahr 2009 einen toxikologischen Grenzwert (lebenslang duldbare wöchentliche Aufnahme¬menge) mit 2,5 µg/kg Körpergewicht festgelegt. Pflanzliche und tierische Lebens¬mittel stellen bei der nicht rauchenden Allgemeinbevölkerung hierbei den wichtigsten Aufnahmeweg für Cadmium dar. Mit der Verordnung (EU) Nr. 488/2014 werden für Cadmium in Schokolade sowie in Kakao Grenzwerte festgesetzt, die jedoch erst ab dem 1. Januar 2019 gelten. Im Fall von Kakaopulver, das direkt oder als Zutat in gesüßtem Kakaopulver an die Endverbraucher verkauft wird, soll ein Grenzwert von 0,60 mg Cadmium/kg gelten. Bei Acrylamid existieren weder Richt- noch Grenzwerte für Kakao und Schokolade noch wird diese Lebensmittelgruppe in dem seit dem Jahr 2007 durchgeführten EU Monitoring-Programm zur Überwachung der Acrylamidgehalte berücksichtigt. Im Juni 2015 veröffentlichte die EFSA ihre erste vollständige Risiko¬bewertung zu Acrylamid in Lebensmitteln, in der die Einschätzung, dass Acrylamid in Lebensmitteln das Krebsrisiko für Verbraucher aller Altersgruppen potenziell erhöht, bestätigt wurde. Basierend auf diesen Entwicklungen hat die Bundesanstalt für Materialforschung und prüfung im Rahmen der Europäischen Referenzmaterialinitiative (ERM®) damit begon¬nen, drei für unterschiedliche Gehalte an Cadmium (0,2-0,8 mg/kg) und Acrylamid (50-150 µg/kg) zertifizierte Kakao-Referenzmaterialien (ERM®-BD513, BD514, -BD515) zu entwickeln. Die thematische Aktualität sowie die auf den ISO-Guidelines 30-35 basierende Herstellung und Zertifizierung verstärken die Bedeutung dieser Materialien als wichtige Instrumente der laborinternen Qualitätssicherung. Präsentiert werden der aktuelle Stand der Materialherstellung, Charakterisierung und Zertifizierung der drei ERM®-Materialien einschließlich der Homogenitäts- und Stabilitätsstudien. T2 - ANAKON 2017 CY - Tübingen, Germany DA - 03.04.2017 KW - Acrylamid KW - Cadmium KW - Kakao KW - Zertifizierte Referenzmaterialien PY - 2017 AN - OPUS4-39664 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weigert, Florian T1 - Photoluminescence Properties of coreshell CdSe Nanocrystals with Different Shells and Surface Chemistries Derived from Ensemble and Single Particle Measurements N2 - The optical properties of semiconductor nanocrystals (SCNCs) depend on constituent material, particle size, and surface chemistry, with the size of the photoluminescence (PL) quantum yield (QY) and the PL decay kinetics being largely controlled by the number of dangling bonds, which have to be properly passivated for high quality materials. Hence, PL measurements can provide insight not only in SCNC photophysics, yet can be also used for quality control of SCNC synthesis and surface modification. In this respect, steady state and time-resolved fluorometry and confocal microscopy with time correlated single photon counting were used to study the PL properties of core-shell CdSe SCNCs with different shells and surface chemistries on ensemble and single particle level, thereby focusing on a correlation of ensemble PL QY and PL decay kinetics with particle brightness, PL time traces, and the On-time fraction of single SCNCs. Additionally, confocal PL images were correlated with AFM measurements in order to derive the amount of absorbing, yet non-emissive ”dark” SCNCs, the presence of which resulting in an underestimation of ensemble PL quantum yields. The results of this study can help to identify synthetic routes and surface modifications, which minimize the fraction of dark SCNCs. T2 - PicoQuant 22nd International Workshop on Single Molecule and Super-Resolution Microscopy in the Life Sciences CY - Berlin, Germany DA - 14.09.2016 KW - Single molecule KW - SCNC KW - QY KW - AFM KW - Confocal PY - 2016 AN - OPUS4-38121 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Mycotoxins and Acrylamide in Foods - New Reference Materials T2 - BERM-12 CY - Oxford, England DA - 2009-07-07 PY - 2009 AN - OPUS4-19285 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merkel, Stefan T1 - Analysis of Ergot Alkaloids without Epimerization T2 - Tag der Chemie 2011 CY - Berlin, Germany DA - 2011-07-13 PY - 2011 AN - OPUS4-24033 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tavernaro, Isabella T1 - Design of Fluorescent, Amorphous Silica-NPs and their Versatile Use in Sensing Applications N2 - Surface functionalized silica nanoparticles (SiO2-NP) gained great interest in the life and material sciences, as they can be used e.g. as drug carriers, fluorescent sensors, and multimodal labels in bioanalytical assays and imaging applications. They are highly stable, are easily produced and modified on a large scale at low cost and can be labeled or stained with a multitude of sensor dyes. These dye modified particle conjugates have several advantages as compared to conventional molecular probes like enhanced brightness, ease of designing ratiometric systems by combining analyte-sensitive and inert reference dyes, and increased photostability. Moreover, stained nanoparticles can enable the use of hydrophobic dyes in aqueous environments. Here we present our work on multicolored sensors for the measurement of pH, oxygen and saccharides utilizing amorphous SiO2 NPs. T2 - Focus Area Day Analytical Sciences 2023 CY - Berlin, Germany DA - 20.04.2023 KW - Amorphous silica particles KW - Particle Synthesis KW - Nano KW - Ratiometric Sensors KW - Fluorescence KW - pH probe KW - Dye PY - 2023 AN - OPUS4-59151 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Selektive Quantifizierung von Zearalenon in pflanzlichen Speiseölen T2 - Anakon 2015 CY - Graz (Österreich) DA - 2015-03-23 PY - 2015 AN - OPUS4-32856 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Development of a certified calibration standard for the determination of mineral oil hydrocarbons using gas chromatography T2 - BERM 10, Tenth International Symposium on Biological and Environmental Reference Materials CY - Charleston, SC, USA DA - 2006-04-30 PY - 2006 AN - OPUS4-11691 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schloß, Svenja T1 - Development of a HPLC-MS-Method for the Quantification of Enniatin B in Fermented Feed T2 - 42. Deutscher Lebensmittelchemikertag 2013 CY - Braunschweig, Germany DA - 2013-09-16 PY - 2013 AN - OPUS4-29170 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - New reference materials for mineral oil analysis in water, soil and waste T2 - Analytica Conference 2004 (Poster des Consortiums vom EU-Projekt HYCREF (Vh 1275)) CY - Munich, Germany DA - 2004-05-11 PY - 2004 AN - OPUS4-5478 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Qualitätssicherung in der Lebensmittelanalytik Referenzmaterial für T-2- und HT-2-Toxin T2 - 40. Deutscher Lebensmittelchemikertag 2011 CY - Halle (Saale), Germany DA - 2011-09-12 PY - 2011 AN - OPUS4-23322 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Luminescence Techniques: Major Method Inherent Sources of Error, Traceable Instrument Characterization, and Certified Fluorescence Standards T2 - 5. International Symposium on Functional p-Electron Systems CY - Ulm, Germany DA - 2004-05-30 PY - 2004 AN - OPUS4-10906 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiesholler, L. M. T1 - Core-shell- Nd3+ - doped upconversion nanoparticles with enhanced luminescence properties for bioanalytical applications N2 - Upconversion nanoparticles are characterized by their ability to convert low energy near-infrared excitation in high energy emissions in the visible range. This is enabled by sequential absorption of two or more photons via energy transfer from the sensitizer lanthanide ion Yb3+ to an activator lanthanide ion, e.g. Er3+. Yb3+ sensitation has the advantage of 980 nm excitation achieved by commercial available low power cw laser modules. Nevertheless, for some applications, especially in aqueous media, which is predominantely in bioanalytical applications, there is the drawback of a local Absorption maximum of water at this wavelength. Sample heating can occur, and excitation power density is strongly distance dependent. To overcome this issue, the idea is to shift the excitation wavelength to 808 nm. This can be achieved by a tandem-excitation using Nd3+ and Yb3+ ions. Nd3+ gets excited by 808 nm irradiation and transfers the energy to Yb3+, which triggers the upconversion emission of the Er3+ ions. Therefore, it is mandatory to separate Nd3+ and Er3+ by core-shell architecture for reducing the energy backtransfer from Er3+ to Nd3+. To further enhance the upconversion luminescence an additional inert shell formed by the host material NaYF4 reduces the quenching effects caused by surface defects and dangling bonds. T2 - MRS Spring Meeting CY - Phoenix, Arizona, USA DA - 17-21. April KW - Core-shell KW - Upconversion KW - Nd3+ PY - 2017 AN - OPUS4-40035 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Monks, Melissa-Jane T1 - Rare earth strontium fluoride nanocrystals prepared via sol gel synthesis - Spectroscopic study of upconversion luminescence properties N2 - Obtaining high quality upconverting nanocrystals with only little crystal defects and hence, a high luminescence, affords a reliable synthesis route. Only this guarantees the reproducibility of the material and its spectroscopic properties required for future application. The fluorolytic sol-gel synthesis appears to be a convenient attempt, as this is a method with only few steps influencing the material properties, which can be well controlled. Also creating bright upconverting nanocrystals requires a profound understanding of the interplay of photophysical processes like multiphoton absorption, radiative and non-radiative pathways, and energy transfer in the material. Based on steady-state and time resolved luminescence measurements at different excitation power densities, the influence of the lanthanide doping ratio and synthesis parameters such as the annealing process on SrF2-nanocrystals obtained via the fluorolytic sol-gel synthesis was systematically studied. T2 - GDCh Wissenschaftsforum Chemie CY - Berlin, Germany DA - 10.09.2017 KW - Upconversion KW - Strontiumfluoride KW - Annealing study KW - Doping study KW - Luminescence PY - 2017 AN - OPUS4-42944 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leiterer, Jork T1 - Fluorescence studies in acoustically levitated droplets T2 - ANAKON 2007 - Tagung Fachgruppe Analytische Chemie der Gesellschaft Deutscher Chemiker, Friedrich-Schiller-Universität CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14686 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Becker, Roland T1 - The role of matrix reference materials in the process of method validation - A case study: PCBs in cable coverings T2 - BERM 9 - 9th International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 2003-06-15 PY - 2003 AN - OPUS4-4793 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Würth, Christian T1 - Detemination of Quantum Yields and Efficiences of Flourescent Particles with an Integrating Sphere Setup T2 - 13. Conference on Methods and Applications Flourescence CY - Genoa, Italy DA - 2013-09-08 PY - 2013 AN - OPUS4-29634 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brodehl, Antje T1 - Biotransformation of Zearalenone by Fungi used in Food Fermentation T2 - 36th Mycotoxin Workshop CY - Göttingen, Germany DA - 2014-06-16 PY - 2014 AN - OPUS4-31165 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Keller, Julia T1 - Simulating biotransformation reactions of citrinin by electrochemistry/mass spectrometry N2 - Mycotoxins can be found worldwide in food and feed and cause a variety of mold-related health risks which makes it necessary to further examine their metabolic fate in human and other mammals. Beside standard in vitro assays with liver cell preparations an increasing interest in new simulation methods are playing a growing role. The online coupling of electrochemistry with mass spectrometry (EC/MS) is one of these novel techniques, successfully applied in pharmacological and drug research for several years now. The primary objective of this study was to investigate the capability of EC/MS to elucidate metabolic pathways of the mycotoxin citrinin as relevant food contaminant. For this purpose, a coulometric flow through cell equipped with a glassy carbon working electrode was used by applying a ramped potential between 0 and 2 V vs Pd/H2. The electrochemically generated oxidation products analyzed by EC/MS were compared to those obtained from in vitro assays. To receive a comprehensive assessment of EC/MS other non-microsomal oxidation techniques such as Fenton-like reaction and UV irradiation were applied. Several hydroxylated derivatives of citrinin were generated by EC/MS and Fenton-like reaction which are similar to microsomal biotransformation products. These data show that EC/MS is a versatile tool that can be easily applied in mycotoxin research to support metabolic investigations of known and unknown mycotoxins. T2 - ANAKON CY - Tübingen, Deutschland DA - 03.04.2017 KW - Electrochemistry KW - Citrinin KW - Mass spectrometry PY - 2017 AN - OPUS4-39765 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Güttler, Arne A1 - Richter, Maria A1 - Würth, Christian A1 - Resch-Genger, Ute T1 - New Reference Materials for Quantification and Standardization of Fluorescence-based Measurements N2 - Luminescence techniques are amongst the most commonly used analytical methods in the life and material sciences due to their high sensitivity and non-destructive and multiparametric character. Photoluminescence signals are, however, affected by wavelength-, polarization-, and time-dependent instrument specific effects and the compound-specific photoluminescence quantum yield. The former hamper the comparability of fluorescence measurements, while the relative determination of the latter requires suitable quantum yield standards with well-known photoluminescence quantum yields. For the simple correction of instrument specific effects in the wavelength region of 300 nm to 950 nm, the set of the five certified spectral fluorescence standards (CRM) BAM-F001 – BAM-F005, has been extended to the NIR range by including two new fluorescence standards currently under certification. T2 - 17th conference on Methods and Applications in Fluorescence CY - Gothenburg, Sweden DA - 11.09.2022 KW - Luminescence KW - Photoluminescence KW - Fluorescence KW - Quantum yield KW - Certified reference material KW - Standard PY - 2022 AN - OPUS4-56441 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - New certified reference materials for mycotoxin analysis in food T2 - Tag der Chemie (Humboldt-Universität zu Berlin) CY - Berlin, Germany DA - 2011-07-13 PY - 2011 AN - OPUS4-23863 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Würth, Christian T1 - Determination of brightness values of luminescent particles T2 - Biosensor Symposium CY - Wildau, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-27811 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Harald Rune T1 - Imaging of local pH in biofilm using polymeric sensors: towards the elucidation of microbial induced corrosion N2 - Microbial induced corrosion (MIC) is a crucial problem in many technical plants as well as fuel tanks, leading to considerable damage and huge financial losses. Successful prevention of MIC requires the localization of first signs of corrosion as well as the identification of factors influencing the corrosion process. In this respect, also the determination of corrosion rates can be of interest for the possible prevention of MIC. Hence, there is a growing need for sensitive and preferably inexpensive tools that enable the early detection of MIC. Of special interest are methods, which provide spatially and time-resolved information and allow the study of changes on metal surfaces as prerequisites for a more detailed analysis of ongoing corrosion processes at a MIC-affected site. Biofilm formation can lead to changes in pH, oxygen and chloride concentration as well as to the release of certain metal ions like Fe(II) and Mn(II) depending on the type of metal surface involved. Hence, optical methods enabling the detection of these analytes at very low concentration and monitoring of their changes can be used for MIC detection. Here, we propose to utilize polymeric nanosensors for MIC detection via the determination of the local pH value changes in different biofilms. Such nanosensors are known to have several advantages in imaging applications such as intracellular pH measurements including the ease of doping or labeling with a multitude of analyte-responsive and inert dye molecules for the realization of a high analyte sensitivity and ratiometric sensing. Moreover, they can be surface functionalized with target-specific ligands e.g., lectins, for the specific binding to the outer surface of certain types of bacteria. In this respect, different polymer architectures will be studied to identify an optimal candidate in terms of imaging performance in conjunction with several classes of pH-responsive fluorescent dyes like cyanines, aza-BODIPYs, and xanthenes, utilizing different mechanism of signal generation such as photo-induced electron transfer or protonation-induced changes in the spectral position of absorption and emission spectra. T2 - Europtrode CY - Graz, Austria DA - 20.03.2016 KW - Nanosensor KW - Microbial induced corrosion KW - Imaging KW - Nanosensor KW - Mikrobiell induzierte Korrosion KW - Bildgebung PY - 2016 AN - OPUS4-35628 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dippong, Martin T1 - Flow Cytometry (FACS) for characterization and sorting of murine B cells to advance development of monoclonal antibodies T2 - Trends in Diagnostics CY - Tübingen, Germany DA - 2013-10-07 PY - 2013 AN - OPUS4-29241 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Fast and Reliable Luminescence Quantum Yield Determination for efficient fluorescent Probes development T2 - SPIE BIOS 2013 - Part of Photonics West CY - San Francisco, CA, USA DA - 2013-02-02 PY - 2013 AN - OPUS4-27804 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Nanoparticles for FLIM-based Multiplexed Analysis and Imaging T2 - Focus on Microscopy (FOM 2013) CY - Maastricht, Netherlands DA - 2013-03-24 PY - 2013 AN - OPUS4-28470 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Certified reference materials for Ochratoxin A in coffee and wine T2 - Mykotoxin-Workshop CY - Utrecht, Netherlands DA - 2008-04-28 PY - 2008 AN - OPUS4-17494 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pfeifer, L. T1 - Fluorescence Lifetime Read-Out of Quantum Dots in a Homogeneous Immunoassay T2 - SBS 15th Annual Conference & Exhibition CY - Lille, France DA - 2009-04-26 PY - 2009 AN - OPUS4-19423 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leubner, S. T1 - Influence of the surface chemistry on the photoluminescence quantum yield of quantum dots T2 - JCF Frühjahrssymposium CY - Rostock, Germany DA - 2012-03-18 PY - 2012 AN - OPUS4-26985 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - European Reference Materials for Ochratoxin A in Coffee and Wine T2 - 38. Deutscher Lebensmittelchemikertag CY - Berlin, Germany DA - 2009-09-14 PY - 2009 AN - OPUS4-19962 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schloß, Svenja T1 - Isolation and Characterization of Enniatins from Fungal Cultures T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27864 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Getting it right with fluorescence: the calibration kit spectral fluorescence standards T2 - BERM 10, Tenth International Symposium on Biological and Environmental Reference Materials CY - Charleston, SC, USA DA - 2006-04-30 PY - 2006 AN - OPUS4-12245 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf T1 - Murine hybridoma cells can be specifically labeled and sorted by Flow Cytometry (FACS) in order to select clones for mab production T2 - Proteomics Forum CY - Berlin, Germany DA - 2011-04-03 PY - 2011 AN - OPUS4-24950 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mönch, Bettina T1 - Untersuchung von Matrixeffekten bei der Ergotalkaloid-Analyse mittels HPLC-MS/MS T2 - 42. Deutscher Lebensmittelchemikertag 2013 CY - Braunschweig, Germany DA - 2013-09-16 PY - 2013 AN - OPUS4-29134 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gerstung, Vanessa T1 - Schwefeldioxid in Lebensmitteln T2 - GDCh, Jahrestagung der Fachgruppe "Umweltchemie und Ökotoxikologie" CY - Halle (Saale), Germany DA - 2006-10-04 PY - 2006 AN - OPUS4-12580 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brodehl, Antje T1 - Modifizierung des Mykotoxins Zearalenon durch Pilzstämme aus der Lebensmitteltechnologie T2 - Anakon 2015 CY - Graz (Österreich) DA - 2015-03-23 PY - 2015 AN - OPUS4-32787 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Youngeun, C. T1 - DNA coated metal nanoparticles with tailored optical properties T2 - Molecular Plasmonics 2015 CY - Jena, Germany DA - 2015-05-07 PY - 2015 AN - OPUS4-33699 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herter, Sven-Oliver T1 - Synthesis and application of stable isotopically labeled ergot alkaloids N2 - Ergot alkaloids form a toxicologically relevant group of mold toxins (mycotoxins) that are among the most common contaminants of food and animal feed worldwide. Therefore, reliable controls are indispensable for the minimization of both health risks and economic damages. As a consequence of their toxicological significance, EU limit values for 12 priority ergot alkaloids were established for the first time in 2022. These limits range from 500 µg/kg in rye milling products down to 20 µg/kg in processed cereal-based foods for infants and young children. Despite the use of high-performance liquid chromatography-mass spectrometry to quantify low concentrations of ergots in food, the current European standard procedure EN 17425:2021 cannot be fully applied due to the lack of isotopically labeled reference standards. The complex structure of the ergot alkaloids makes a total synthesis extremely challenging, expensive, and time-consuming. Consequently, we focused on a semi-synthetic approach with the aim of specifically demethylating the N6-atom of the lysergic acid moiety, a shared structural feature among all ergot alkaloids. This resulted in the formation of a norergot alkaloid, which was purified using preparative HPLC. The reaction of the norergot alkaloid with an isotopically labeled electrophilic methyl source, such as iodomethane or dimethyl sulfate, yielded the desired isotopically labeled ergot alkaloid. This methodology enabled the successful synthesis of all 12 stable isotopically labeled priority ergot alkaloids for the first time. Herein we present the problem of the current unavailability of these isotopically labeled standards and our approach to solve this urged demand. Moreover, we are able to present initial data on how these standards enhance the European standard procedure, EN 17425:2021. T2 - 11th International Symposium on RECENT ADVANCES IN FOOD ANALYSIS CY - Prague, Czech Republic DA - 05.11.2024 KW - Reference Material KW - HPLC-MS/MS KW - Mycotoxins KW - Ergot Alkaloids KW - Isotopic Labeling PY - 2024 AN - OPUS4-61690 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nirmalananthan-Budau, Nithiya T1 - Multimodal cleavable reporters for the optical quantification of functional groups on nano- and microparticles N2 - Polymer nanoparticles (NPs) are of increasing importance for a wide range of applications in the material and life sciences. This includes their application as carriers for e.g., analyte-responsive ligands for DNA sequencing platforms, drugs as well as dye molecules for use as multichromophoric reporters for signal enhancement in optical assays or the fabrication of nanosensors and targeted probes in bioimaging studies. All these applications require surface functionalization of the particles with e.g., ligands, sensor dyes, or analyte recognition moieties like biomolecules, and subsequently, the knowledge of the chemical nature and total number of surface groups as well as the number of groups accessible for coupling reactions. Particularly attractive for the latter are optically active reporters together with sensitive and fast optical assays, which can be read out with simple, inexpensive instrumentation. We assessed a variety of conventional and newly developed colorimetric and fluorometric labels for optical surface group analysis, utilizing e.g., changes in intensity and/or color for signal generation. Moreover, novel cleavable and multimodal reporters were developed which consist of a reactive group, a cleavable linker, and an optically active moiety, chosen to contain also heteroatoms for straightforward method validation by elemental analysis, ICP-OES, ICP-MS or NMR. In contrast to conventional labels measured bound at the particle surface, which can favor signal distortions by scattering and encoding dyes, cleavable reporters can be detected colorimetrically or fluorometrically both attached at the particle surface and after quantitative cleavage of the linker in the transparent supernatant after particle removal e.g., by centrifugation. Here, we present first results obtained for the optical quantification of carboxylic and amino groups on a series of self-made polystyrene NPs with different types of labels and compare their potential and drawbacks for surface group analysis. T2 - NanoWorkshop 2018 CY - Berlin, Germany DA - 14.05.2018 KW - Optical assays KW - Cleavable probes KW - Conventional dyes KW - Nanoparticles PY - 2018 N1 - Geburtsname von Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. - Birth name of Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. AN - OPUS4-45177 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Sharpening the fluorescence properties of cyanine bioconjugates: a novel series of highly sulfonated pentamethine cyanines T2 - ESMI 2013 CY - Turin, Italy DA - 2013-05-27 PY - 2013 AN - OPUS4-28955 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Würth, Christian T1 - Optical Properties of Fluorescent biosensor Systms T2 - Doktorandentagung CY - Attendorn, Germany DA - 2009-02-15 PY - 2009 AN - OPUS4-19421 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - New CRM for T-2 and HT-2 toxin: a crucial tool for quality assurance and control in food analysis T2 - 5th International Symposium on Recent Advances in Food Analysis (RAFA 2011) CY - Prague, Czech Republic DA - 2011-11-01 PY - 2011 AN - OPUS4-24104 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pötz, Stefanie T1 - Bestimmung von prüfwertrelevanten Mineralölkohlenwasserstofffraktionen in technischen Mineralölprodukten mittels GCxGC-FID T2 - ANAKON 2007 CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-13742 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merkel, Stefan T1 - Untersuchungen zur Epimerisierung von Ergotalkaloiden T2 - 39. Deutscher Lebensmittelchemikertag CY - Stuttgart, Germany DA - 2010-09-20 PY - 2010 AN - OPUS4-20975 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Monte, Christian T1 - Das BAM Referenzfluorometer T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-7393 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Mono- und Diacetoxyscirpenol - Bestimmung in Getreide und Getreideerzeugnissen mittels SIVA - HPLC-MS/MS T2 - Anakon 2015 CY - Graz (Österreich) DA - 2015-03-23 PY - 2015 AN - OPUS4-32854 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - 2nd reference function estimation: A key element in dynamic measurement intercomparison of fluorescence T2 - PittCon CY - Chicago, IL, USA DA - 2007-02-25 PY - 2007 AN - OPUS4-16412 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Development of certified reference materials for the determination of mineral oil hydrocarbons in water, soil and waste T2 - EU-Projekt HYCREF für die BERM-9 CY - Berlin, Germany DA - 2003-06-17 PY - 2003 AN - OPUS4-5856 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mathejczyk, J. T1 - Characterisation of nanoparticles containinga novel NIRF dye for tumor-specific imaging T2 - Imaging Innovations of the Lung CY - Göttingen, Germany DA - 2012-04-18 PY - 2012 AN - OPUS4-25697 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kraft, Marco T1 - Absolute Photoluminescence Quantum Yields and Lifetimes of 21 nm, 26 nm and 31 nm Sized Hexagonal ?-NaYF4: Er, Yb Upconversion Particles in Cyclohexane and Aqueous Solutions T2 - Adlershofer Forschungsforum 2015 CY - Berlin DA - 2015-11-11 PY - 2015 AN - OPUS4-34917 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Linck, Lena T1 - Direct Enzymatic Incorporation of Fluorophores on DNA-Microarrays via Rolling Circle Amplification (RCA) T2 - Dechema Tagung CY - Frankfurt am Main, Germany DA - 2008-03-06 PY - 2008 AN - OPUS4-18548 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Characterization and performance validation of spectral scanning fluorescence microscopes with easy-to-use fluorescence standards T2 - Method and Application of Fluerescence (MAF10) CY - Salzburg, Austria DA - 2007-09-09 PY - 2007 AN - OPUS4-16411 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Höhne, Robert T1 - PEGylation of fluorescent nanoparticles for multiplex detection in bioanalytics T2 - 6. Senftenberger Innovationsforum: Multiparameteranalytik mit zellulären Assays CY - Senftenberg, Germany DA - 2012-03-16 PY - 2012 AN - OPUS4-25700 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gärtner, Sonja T1 - Weichmacher in Lebensmitteln und Verpackungen nach Migration und Extraktion T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-18395 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - MKW - Forschung, Normung und Referenzmaterialien T2 - Evaluierung der BAM (Zweiggelände Adlershof) durch den Wissenschaftsrat CY - Berlin, Germany DA - 2006-01-17 PY - 2006 AN - OPUS4-11690 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Fluorescence Standards for the Traceable Characterization of Fluorometers T2 - 7th Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Amsterdam, Netherlands DA - 2001-09-16 PY - 2001 AN - OPUS4-10909 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maul, Ronald T1 - Vergleich von in-vitro-Metabolismusmodellen mit in vivo-Daten am Beispiel der Rotkleeisoflavone T2 - 39. Deutscher Lebensmittelchemikertag CY - Stuttgart, Germany DA - 2010-09-20 PY - 2010 AN - OPUS4-22323 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Referenzmaterialien für Ochratoxin A in Kaffee und Wein T2 - Deutscher Lebensmittelchemikertag CY - Nuremberg, Germany DA - 2007-09-10 PY - 2007 AN - OPUS4-15679 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Muhr, Verena T1 - Surface Modification of Upconverting Luminescent Nanoparticles Suitable for Förster Resonance Energy Transfer T2 - Anakon 2015 CY - Graz, Austria DA - 2015-03-23 PY - 2015 AN - OPUS4-33665 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gerstung, Vanessa T1 - Bestimmung von Schwefeldioxid in Lebensmitteln T2 - ANAKON 2007 der GDCh CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14618 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - A new detection method for the sensitive measurement of interactions on BioChips: Rolling circle amplification (RCA) T2 - DECHEMA Statusseminar Chiptechnologien CY - Frankfurt am Main, Germany DA - 2008-01-31 PY - 2008 AN - OPUS4-18550 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Rita T1 - Vergleich interner Standards zur OTA-Bestimmung in Lebensmitteln T2 - 37. Deutscher Lebensmittelchemikertag CY - Kaiserslautern, Germany DA - 2008-09-08 PY - 2008 AN - OPUS4-17489 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - cis-trans-Isomerie von Zearalenon - Unsicherheitsquelle in der Lebensmittelkontrolle? T2 - 40. Deutscher Lebensmittelchemikertag CY - Halle (Saale), Germany DA - 2011-09-12 PY - 2011 AN - OPUS4-23321 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quevedo, Pablo T1 - Streptavidin-modified nanoreporters for immunofluorescence assays T2 - Anakon 2015 CY - Graz, Austria DA - 2015-03-23 PY - 2015 AN - OPUS4-33655 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Aktuelle Acrylamid-Belastungen in Kakao und Schokolade T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-26896 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maul, Ronald T1 - Biosynthesis of zearalenone conjugates by fungi N2 - Zearalenone (ZEN) and its sulfate and glucoside conjugates have been detected in (a broad variety of) food and feed commodities1. Both conjugated derivatives are formed as part of fungal or plant secondary metabolism and thus, belong to the group of modified mycotoxins2. After consumption of contaminated foodstuff, the conjugates can be hydrolyzed by human intestinal microbiota leading to liberation of ZEN that implies an underestimation of the true ZEN exposure. In order to include ZEN conjugates in routine analysis, as well as for toxicological investigation reliable standards are needed. The objective of the present study was to develop a simple and economic method for biosynthesis of ZEN conjugates. Preceding experiments on the biotransformation of ZEN by Rhizopus and Aspergillus species showed a mixed metabolite formation3. Therefore, these known ZEN conjugating fungal strains were screened for their potential to selectively synthesize the ZEN derivatives ZEN-14-sulfate (Z14S), ZEN-14-glucoside (Z14G) and ZEN-16-glucoside (Z16G). The screening was conducted by adding ZEN to liquid fungal cultures. Cultivation conditions and ZEN incubation time were varied. All media samples were analyzed for metabolite formation by HPLC-MS/MS. Z14S was exclusively formed by A. oryzae. Under optimized conditions a specific biosynthesis of Z14G by R. oryzae and Z16G by R. oligosporus was achieved. After liquid-liquid-extraction and preparative chromatographic cleanup 1H-NMR purities of ≥ 73% for Z14S, ≥ 82% for Z14G and ≥ 50% for Z16G were obtained. In addition, a consecutive biosynthesis was developed by first using Fusarium graminearum for ZEN biosynthesis on rice based liquid medium. After inactivation of Fusarium the subsequent conjugation reaction was conducted utilizing Aspergillus and Rhizopus species under the various optimized conditions. In this study an easy and cost-efficient biosynthesis for Z14S, Z14G and Z16G was developed. The developed biosynthesis could be also used for other metabolites like ZEL conjugates. Our results of the in vitro screening indicate also the formation of a ZEL-glucoside and α ZEL-sulfate as major metabolites by R. oryzae. In sum, under optimized cultivation conditions fungi can be easily utilized for a targeted and stereospecific synthesis of ZEN conjugates. T2 - 10th World Mycotoxin Forum Conference CY - Amsterdam, The Netherlands DA - 12.03.2018 KW - Mycotoxins KW - Food safety KW - Analytical standards PY - 2018 AN - OPUS4-44547 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mekonnen, Tessema Fenta T1 - Simulation of metabolic transformation products of pesticides by EC-LC-MS N2 - Among major food contaminants agrochemicals (including insecticides, fungicides and herbicides) are a threat for food safety in many countries. Once they entered the food chain or the environment, the parent compound can be transformed into different products by manmade and natural processes. The transformation products (TPs) might be more toxic and stable than the parent compound. In addition to this the transformation products might undergo conjugation with different compounds and/or changed to phase II metabolites. Conventional in-vivo or in-vitro methods to study phase I and II metabolism have drawbacks of long-time sample preparation and matrix complexity. Online coupling of an electrochemical cell with liquid chromatography-mass spectrometry (EC–LC–MS) is a promising technique to study metabolites, fate and transformation products of pesticides. The new approach enables to identify metabolic transformation products by oxidizing analyte of interest on the EC, separate the metabolites on HPLC and identifying them by MS. The aim of the present study is to identify/mimic pesticides phase I metabolites using electrochemical cell coupled to liquid chromatography-mass spectrometry (EC-LC-MS). Metabolic transformed products of two model compounds, fluopyram (fungicide) and chlorpyrifos (insecticide) were studied by EC upfront with MS. The results of EC-LC-MS are compared and discussed with those derived from in-vitro assays and the metabolites identified by LC-MS/MS. T2 - ISEAC39- International Conference Series on Environmental & Food Monitoring CY - Hamburg, Germany DA - 19.07.2016 KW - Metabolic transformation KW - Pesticides KW - EC-MS PY - 2016 AN - OPUS4-36953 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - NanoGenotox - Automatable determination of genotoxicity of nanoparticles with DNA-based optical assays N2 - The overall interest in nanotoxicity, triggered by the increasing use of nanomaterials in the material and life sciences, and the synthesis of an ever increasing number of new functional nanoparticles calls for standardized test procedures and for efficient approaches to screen the potential genotoxicity of these materials. Aiming at the development of fast and easy to use, automated microscopic methods for the determination of the genotoxicity of different types of nanoparticles, we assess the potential of the fluorometric γH2AX assay for this purpose. This assay, which can be run on an automated microscopic detection system, relies on the detection of DNA double strand breaks (DSB) as a sign for genotoxicity. Here, we provide first results obtained with broadly used nanomaterials like CdSe/CdS and InP/ZnS quantum dots as well as iron oxide, gold, and polymer particles of different surface chemistry with previously tested colloidal stability and different cell lines like Hep-2 and 8E11 cells, which reveal a dependence of the genotoxicity on the chemical composition as well as the surface chemistry of these nanomaterials. These studies will be also used to establish nanomaterials as positive and negative genotoxicity controls or standards for assay performance validation for users of this fluorometric genotoxicity assay. In the future, after proper validation, this microscopic platform technology will be expanded to other typical toxicity assays. T2 - Nanoworkshop 2018 CY - PTB Berlin-Adlershof, Germany DA - 14.05.2018 KW - Qdots KW - Surface functions KW - Quantification KW - Nanogenotoxicity PY - 2018 AN - OPUS4-45126 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - New Certified Reference Materials for Mineral Oil Analysis in Environmental Matrices T2 - Jahrescolloquium der IGAS (Interessengemeinschaft Atomspektroskopie), Adlershof CY - Berlin, Germany DA - 2005-11-08 PY - 2005 AN - OPUS4-10980 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koshkina, Olga T1 - Synthesis and Characterisation of Siloxane Based Nanoparticles for in Vitro studies T2 - Advanced Functional Polymers for Medicine 2011 CY - Enschede, Netherlands DA - 2011-06-15 PY - 2011 AN - OPUS4-23896 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lörchner, Dominique T1 - Abbau- und Transformationsverhalten von heterozyklischen polybromierten Flammschutzmitteln mittels EC/MS N2 - Polybromierte Flammschutzmittel (PBFSM) umfassen eine Gruppe strukturell unter-schiedlicher Verbindungen, die zur Herabsetzung der Entflammbarkeit in Kunststoffen eingesetzt werden. Aufgrund der mitunter persistenten, bioakkumulierenden sowie toxischen Eigenschaften stellt die Migration und ubiquitäre Verbreitung von PBFSM der ersten Generation ein potenzielles Risiko dar. Daher sind diese Verbindungen mittlerweile in der Europäischen Union verboten bzw. nur noch eingeschränkt zugelassen. Die Industrie hat daher neue PBFSM auf den Markt gebracht, die auf Grundlage ähnlicher Eigenschaften jedoch ebenfalls ein ernstes Risiko für Mensch und Umwelt darstellen können. Diese alternativen PBFSM werden in zwei Klassen eingeteilt: "emerging" und "novel" PBFSM. Emerging PBFSM sind definiert als Verbindungen, die in allen Umweltkompartimenten identifiziert wurden, während novel PBFSM nur in Materialien und/oder Waren oberhalb von 0,1 Gew.-% nachgewiesen wurden. Aufgrund der begrenzten Datenlage bezüglich Vorkommen, physikalisch-chemischen Eigenschaften und Umweltverhalten wurden zwei Vertreter ausgewählt, um das Abbau- und Transformationsverhalten näher zu untersuchen. Um ein erstes Verständnis über den Verbleib in der Umwelt und den Stoffwechsel dieser PBFSM zu erhalten, wurden oxidative Abbauprozesse durch Kopplung einer elektrochemischen Zelle mit massenspektrometrischer Detektion (EC/MS) simuliert. Zusätzlich wurden in vitro Studien auf der Basis von mikrosomalen Ansätzen (Ratten/Fisch Lebermikrosomen) durchgeführt. Ziel der präsentierten Arbeit ist es, diese verschiedenen Arten von Stoffwechselstudien zu vergleichen, um Daten über den Abbau und/oder Bio-Transformationswege dieser neuen Kontaminanten zu erhalten. T2 - Anakon 2017 CY - Tübingen, Germany DA - 03.04.2017 KW - Elektrochemisch KW - Transformationsprodukte KW - PBFSM PY - 2017 AN - OPUS4-39713 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - CT-Operated Fluorescent Reporters Equipped with Donor- and Acceptor-type Receptors: Accceptor Coordination and Signaling of Different Chemical Inputs T2 - MAF 9, 9th International Conference on Methods and Applications of Fluorescence CY - Lisbon, Portugal DA - 2005-09-04 PY - 2005 AN - OPUS4-7475 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Mykotoxin-Referenzmaterialien - Ein Beitrag zu Qualitätssicherung und Lebensmittelsicherheit T2 - 43. Deutscher Lebsnmittelchemikertag CY - Giessen, Germany DA - 2014-09-22 PY - 2014 AN - OPUS4-31514 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Geißler, Daniel T1 - Quantification of carboxyl and amino groups on nanoparticle surfaces T2 - NanoCHOp Workshop - Chemical and Optical characterisation of nanomaterials in complex systems CY - Teddington, London, UK DA - 2015-05-28 PY - 2015 AN - OPUS4-33693 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lörchner, Dominique T1 - Photodegradation des bromierten Flammschutzmittels TDBP-TAZTO N2 - Die Gruppe der polybromierten Flammschutzmittel (PBFSM) umfasst strukturell verschiedene Verbindungen, die zur Reduzierung der Entflammbarkeit von Polymeren eingesetzt werden. Aufgrund ihrer globalen Verteilung, möglichen Persistenz, Bioakkumulation und Toxizität ist die Nutzung der meisten Vertreter der ersten PBFSM-Generation u.a. in der Europäischen Union verboten oder nur noch eingeschränkt zugelassen. Daher wurden diese z.T. durch neue PBFSM ersetzt. Bedingt durch ähnliche Eigenschaften kann von diesen neuen Verbindungen aber ebenfalls ein ernstes Risiko für die menschliche Gesundheit und Umwelt ausgehen. Vertreter dieser neuen Verbindungen, die bereits in Umweltkompartimenten nachgewiesen werden konnten, werden hierbei als „emerging“ PBFSM bezeichnet. Das Umweltverhalten dieser alternativen PBFSM ist bislang weitgehend unerforscht. Ein Untersuchungsschwerpunkt lag in den letzten Jahren u.a. auf dem Gebiet möglicher photochemischer Abbaureaktionen ausgewählter Vertreter dieser PBFSM in Umwelt¬matrices. Dabei wurden potentielle Photo-Transformationsprodukte (PTPs) in Simulationsstudien bzw. Umweltproben nachgewiesen, wobei als Hauptabbauweg die UV-induzierte photolytische Debromierung identifiziert wurde. Um eine Einschätzung über das Umweltverhalten bzw. die Bildung von PTPs für das heterozyklische „emerging“ PBFSM 1,3,5-Tris-(2,3-dibromopropyl)-1,3,5-triazin-2,4,6-trion (Abb. 1) vornehmen zu können, wurden u.a. Abbaukinetiken sowie die Quantenausbeute des UV-(C) Experiments ermittelt. Weiterhin sollte der Einfluss von OH-Radikalen und des Singulett-Sauerstoffs 1O2 auf den Abbau-mechanismus durch die Zugabe verschiedener Inhibitoren/Scavenger mit anschließender HPLC-MS und zur Identifizierung der gebildeten PTPs mit HRMS Detektion geklärt werden. Ziel der präsentierten Arbeit ist es, ein erstes Verständnis des Umweltverhaltens zu entwickeln, um so eine Bewertung zur toxikologischen Relevanz dieser Verbindung bzw. deren Photo-Transformations-produkte geben zu können. T2 - Anakon 2017 CY - Tübingen, Germany DA - 03.04.2017 KW - UV Abbau KW - PBFSM KW - TDBP-TAZTO PY - 2017 AN - OPUS4-39711 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zavoiura, Oleksandr T1 - RNA detection by FRET systems based on peptide nucleic acid-QD conjugates N2 - Today, 40 % of the world’s population live in areas with a significant risk of dengue infection. Early and reliable diagnosis of dengue virus (DENV) is essential to provide the patients with the required medical care and prevent spreading of the disease. Conventional methods for DENV diagnosis like PCR and virus isolation can be used in laboratory settings, yet are difficult to implement in point-of-care diagnostics, requiring simple, selective, fast, and sensitive detection schemes. We present here a novel approach for the detection of DENV, via its RNA, with optical read-out that relies on RNA-catalyzed fluorophore transfer onto a semiconductor quantum dot (QD) and Förster resonance energy transfer (FRET). For this RNA assay, peptide nucleic acid (PNA) oligomers were used as highly specific capture and reporter probes. PNA exhibits remarkable affinity towards RNA as well as extremely high chemical and enzymatic stability. The capture probe, which is immobilized on a QD acting as FRET donor, bears a nucleophile at the N-terminus and the reporter probe is modified with an organic dye acting as FRET acceptor. The presence of DENV genomic RNA in the sample triggers a transfer of the dye onto the QD, signaled by FRET between the QD and the dye. A unique advantage of this system is the ability of one RNA molecule to trigger multiple transfer reactions, thereby amplifying the fluorescence signal. This assay together with the exceptional brightness of QDs and outstanding hybridization properties of PNA allows for highly specific and sensitive detection of DENV RNA in the sub-nM range. T2 - MAF 2017 CY - Brügge, Belgium DA - 10.09.2017 KW - QD KW - RNA detection KW - PNA KW - Click chemistry PY - 2017 AN - OPUS4-43230 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf T1 - Selektion muriner Hybridomazellen am Durchflußzytometer (FACS) T2 - 5. Senftenberger Innovationsforum Multiparameteranalytik CY - Senftenberg, Germany DA - 2011-03-10 PY - 2011 AN - OPUS4-24948 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - New fluorescence standards for the NIR T2 - 12th Conference on Methods and Applications of Fluorescence: Spectroscopy; Imaging and Probes (MAF-12) CY - Strasbourg, France DA - 2011-09-11 PY - 2011 AN - OPUS4-24524 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köster, D. T1 - A highly sensitive detection method for DNA microarrays T2 - 22nd International Symposium on Microscale bioseparations and methods for systems biology (MSB) CY - Berlin, Germany DA - 2008-03-09 PY - 2008 AN - OPUS4-17515 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Linck, Lena T1 - Fluorescence Signal Amplification on DNA Microarrays via Rolling Circle Amplification (RCA) T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-19131 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quevedo, Pablo T1 - Signal amplification by dye extraction of fluorophore-loaded nanocarriers in immunoassays T2 - 8. Interdisziplinäres Doktorandenseminar CY - Berlin, Germany DA - 2014-02-23 PY - 2014 AN - OPUS4-30279 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - Design and Characterization of NIR-emissive PEGylated and Protein-functionalized Nanoparticles for Bioanalytics T2 - 7th Senftenberger Innovationsforum Multiarameteranalytik CY - Senftenberg, Germany DA - 2013-04-18 PY - 2013 AN - OPUS4-28466 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Characterization of a new near infrared dyes for molecular imaging T2 - Method and Application of Fluerescence (MAF10) CY - Salzburg, Austria DA - 2007-09-09 PY - 2007 AN - OPUS4-16407 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Determination of the Spectral Characteristics of Confocal Spectral Imaging Systems and Comparability of Data T2 - PITTCON 2005 CY - Orlando, FL, USA DA - 2005-02-27 PY - 2005 AN - OPUS4-7059 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merkel, Stefan T1 - Epimerisierungsfreie Analytik von Ergotalkalkaloiden T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23371 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Moser, Marko T1 - Quantification of PEG-Maleimide Ligands and Coupling Efficiencies on Nanoparticles with Ellman’s Reagent N2 - Emissive nanoparticles (NP) are of ever increasing importance in nanotechnology, optical industries, and life sciences. Applicationrelevant properties determining particle performance and biocompatibility depend mainly on surface functional groups or ligands. Coating with polyethylene glycol (PEG) ligands enhances hydrophilicity and biocompatibility of nanomaterials, and enables subsequent binding of biomolecules. Hence, PEGylated particles must be carefully engineered and monitored with simple and fast methods. T2 - 9th Meeting of Engineering of Functional Interfaces CY - Wildau, Germany DA - 03.07.2016 KW - PEG-Maleimide KW - Ellman PY - 2016 AN - OPUS4-37247 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Monte, Christian T1 - Minimizing Uncertainty for Traceable Fluorescence Measurements - The BAM Reference Fluorometer T2 - NEWRAD 2005, 9th International Conference on New Developments and Applications in Optical Radiometry CY - Davos, Switzerland DA - 2005-10-17 PY - 2005 AN - OPUS4-10876 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Monte, Christian T1 - Linking Fluorescence Measurements to Radiometric Units T2 - NEWRAD 2005, 9th International Conference on New Developments and Applications in Optical Radiometry CY - Davos, Switzerland DA - 2005-10-17 PY - 2005 AN - OPUS4-10875 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pötz, Stefanie T1 - Mineralölkohlenwasserstoffe im Boden: Quantifizierung von prüfwertrelevanten Fraktionsparametern für den Wirkungspfad Boden-Mensch T2 - Analytica Conference CY - Munich, Germany DA - 2006-04-25 PY - 2006 AN - OPUS4-11647 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leubner, S. T1 - Surface Chemistry of Quantum Dots as a Main Issue in Determining Their Applicability T2 - ONSNO CY - Dresden, Germany DA - 2012-07-09 PY - 2012 AN - OPUS4-26989 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Spectral fluorescence standards for the traceable characterization of fluorescence measuring systems T2 - COSP '04 - Colloquium der Optischen Spektrometrie, BAM CY - Berlin, Germany DA - 2004-09-13 PY - 2004 AN - OPUS4-4482 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Standardization of Fluorescence Measuring Techniques: Standards for the Characterization of the Spectral Characteristics of Fluorescence Instruments T2 - MAF 9, 9th International Conference on Methods and Applications of Fluorescence CY - Lisbon, Portugal DA - 2005-09-04 PY - 2005 AN - OPUS4-7451 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - On the potential of luminescent inorganic-organic hybrid materials as internationally calibrated monitoring systems for biotechnological applications T2 - Jahrestagung des Arbeitskreises Prozessanalytik der GdCH CY - Berlin, Germany DA - 2006-03-20 PY - 2006 AN - OPUS4-14327 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Fusarium mycotoxin CRMs - perfect tools for quality control in food analysis - T2 - Conference in the frame of the 50th Anniversary of the JRC's IRMM CY - Geel, Belgium DA - 2010-11-23 PY - 2010 AN - OPUS4-22265 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radunz, Sebastian T1 - Upconverting nanoparticle based assays and sensor systems for bacteria/biofilm detection N2 - Results of the short term scientific mission of Sebastian Radunz funded by the european upconversion network. T2 - Short term scientific mission CY - Turku, Finland DA - 09.01.2017 KW - Upconverting nanoparticles KW - Assays PY - 2017 AN - OPUS4-39328 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Werneburg, Martina T1 - In Situ Analysis of Trichodiene as a Volatile Biomarker for the Fast and Non-Invasive Gas-Phase Analysis of Cereal Mycotoxins T2 - 7th Symposium on Recent Advances in Food Analyses (RAFA) CY - Prague (Czech Republic) DA - 2015-11-03 PY - 2015 AN - OPUS4-34983 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brunner, Claudia T1 - Novel Calibration Tools and Validation Concepts for Microarray-based Platforms used in Molecular Diagnostics and Food Safety Control T2 - Analytica Exhibition & Conference 2014 CY - Munich, Germany DA - 2014-04-01 PY - 2014 AN - OPUS4-30564 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krenzer, Julius A1 - Mueller, Thomas T1 - Aroyl-S,N-ketene acetal based bichromophores exhibiting energy transfer and aggregation induced (dual) emission N2 - A series of aroyl-S,N-ketene acetal based bichromophores is readily synthesized by Buchwald-Hartwig amination and Ullmann reaction in moderate to good yields. The aminated aroyl-S,N-ketene acetals are emissive in the solid state and in the aggregate, but not in solution, thus, they are AIEgens (aggregation induced emission chromogens). Aggregation is induced by fractional alternation of the solvent mixture, here by increasing the water fraction of ethanol/water mixtures. For most derivatives, the emission upon induced aggregation stems solely from the aroyl-S,N-ketene acetal chromophore, regardless whether excitation occurs at the absorption maximum of the triarylamine or the aroyl-S,N-ketene acetal. Therefore, a pronounced energy transfer from the triarylamine donor to the aroyl-S,N-ketene acetal acceptor can be inferred. The color of the emission can be controlled by choosing the para-aroyl substituent. A partial energy transfer could also be observed for some bichromophores, leading to aggregation-induced dual emission (AIDE). In addition, four examples of aminated diaroyl-S,N-ketene acetals were added to the compound library. The electron-withdrawing properties of the additional aroyl group provide a bathochromic shift of the emission band of the aroyl-S,N-ketene acetal. These bichromophores also show AIDE and in one case even aggregation-induced white light emission as a result of additive color mixing. T2 - Beilstein Symposium on pi-Conjugated Molecules and Materials CY - Limburg, Germany DA - 07.11.2023 KW - aggregation-induced dual emission (AIDE) PY - 2023 AN - OPUS4-59006 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herter, Sven-Oliver T1 - Synthesis and application of isotopic labelled ergot alkaloids N2 - Ergot alkaloids form a toxicologically relevant group of mould toxins (mycotoxins) that are among the most common contaminants of food and animal feed worldwide. Reliable controls are essential to minimise health risks and economic damage. Due to their toxicological relevance, EU limit values for 12 priority ergot alkaloids have been introduced for the first time in 2022 and range from 500 µg/kg in rye milling products down to 20 ug/kg Processed cereal-based foods for infants and young children[1]. High-performance liquid chromatography - mass spectrometry is used to quantify low concentrations of ergots in food, however the European standard analytical procedure cannot be applied due to the lack of isotopically labelled reference standards. The complex structure of the ergot alkaloids makes a total synthesis extremely challenging, expensive and time-consuming. Therefore, we are focusing on different semi-preparative methods (electrochemistry, organic synthesis, heterogeneous catalysis) to specifically N-demethylate the C8 carbon atom of the lysergic acid moiety. The norergot alkaloid formed is then isotopically labelled using an electrophilic methyl source, i.e. iodomethane or dimethyl sulphate to obtain the specific isotopic labelled ergot alkaloid. Initial experiments have shown that N-demethylation of the ergot alkaloid ergotamine is possible by both electrochemical and wet-chemical organic synthesis. The next step is to adapt the previously determined reaction conditions to enable the synthesis of norergotamine on a mg scale. T2 - 41. International Conference on Environmental & Food Monitoring CY - Amsterdam, Netherlands DA - 20.11.2023 KW - Reference materials KW - Metrology KW - Isotope dilution analysis KW - Calibration standards PY - 2023 AN - OPUS4-59234 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Spectral Emission Standards: Determination of the Emission Correction Function of Fluorescence Measuring Systems T2 - Tag der Chemie CY - Potsdam, Germany DA - 2004-07-07 PY - 2004 AN - OPUS4-4481 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - NIR-Fluorescent Polystyrene Nanoparticles: Design, Optical Characterization and Bioanalytical Applications T2 - Abteilungsseminar BfR CY - Berlin, Germany DA - 2012-06-15 PY - 2012 AN - OPUS4-26022 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kittler, Katrin A1 - Schreiner, M. A1 - Krumbein, A. A1 - Rohn, S. T1 - Detection of the Cyanotoxin Cylindrospermopsin in Brassica Species T2 - JCF Frühjahrssymposium CY - Berlin, Germany DA - 2013-03-06 PY - 2013 AN - OPUS4-27833 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kage, Daniel T1 - Time domain flow cytometry utilizing lifetime-encoded polymer microparticles N2 - Flow cytometry is a widely used method in biological research and medical diagnostics. Depending on the respective application, two opposing directions of development are currently of interest. On the one hand, there is a need for analyses of growing complexity employing more and more fluorescent labels and codes. On the other hand, cost-effective methods and portable, miniaturized, and robust instruments are desired. Commonly performed spectral multiplexing utilizing a color code suffers from several problems, such as the sensitivity of fluorescence intensity measurements to fluctuations in excitation light intensity and dye concentration and hence, photobleaching, dye leaking for certain encoding procedures, and spectral crosstalk, limiting the achievable number of detection channels. Moreover, it typically requires several costly excitation light sources. An innovative alternative can be lifetime multiplexing and the discrimination between different encoding fluorophores and carrier beads based on their fluorescence decay kinetics. In order to examine the potential of this approach, dye encoded beads (lifetime encoded surface chemistry) were prepared using several fluorophores from different dye classes and their suitability for lifetime discrimination in a flow was tested in conjunction with a custom designed flow cytometer equipped with a pulsed light source and a fast detector. In a first step, the spectroscopic properties of micrometer-sized dye-stained PMMA beads were studied by means of steady state and time-resolved photoluminescence measurements. For the performance of studies on the practical use of these microbeads in flow cytometry applications, a custom-built demonstrator model for a flow system was employed. Our results demonstrated that lifetime discrimination and simultaneous readout of a ligand fluorescence signal for analyte quantification with a set of dye-stained polymer microbeads at single wavelength excitation is feasible. These studies are expected to pave the road for new applications of fluorescence lifetime multiplexing within the framework of time-domain flow cytometry and bead-based assays. T2 - ANAKON 2017 CY - Tübingen, Germany DA - 03.04.2017 KW - Flow cytometry KW - Fluorescence KW - Life sciences KW - Lifetime encoding KW - Polymer particles PY - 2017 AN - OPUS4-39995 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schreiner, M. A1 - Krumbein, A. A1 - Rohn, S. T1 - Enhanced LC-MS/MS-Analysis of Cylindrospermopsin in Plant and Freshwater Matrices Using the Stable Isotope Dilution Assay T2 - RAFA 2013 CY - Prague, Czech Republic DA - 2013-11-05 PY - 2013 AN - OPUS4-29484 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schloß, Svenja T1 - Gewinnung und Charakterisierung von Enniatinen aus Pilzkulturen T2 - 41. Deutscher Lebensmittelchemikertag 2012 CY - Münster, Germany DA - 2012-09-10 PY - 2012 AN - OPUS4-26495 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mazurenka, Mikhail T1 - NIR fluorescence imaging system for (pre)clinical applications: design, construction, and validation N2 - We developed, built, and validated a new versatile fluorescence imaging system. The system is intended to reliably test new tracers and contrast agents at different stages of (pre)clinical research. The system, in its current version, is optimized for the detection of ICG emission. The modular design enables to adapt the scanner to emerging spectral windows with traceable and standardized measurements conditions. T2 - Projektmeeting CY - Berlin, Germany DA - 28.10.2023 KW - Fluorescence imaging KW - Imaging system KW - Standardization PY - 2023 AN - OPUS4-58909 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nirmalananthan-Budau, Nithiya A1 - Tavernaro, Isabella T1 - Synthesis and Optical Quantification of Surface Groups on Organic and Inorganic Particle-Carriers N2 - Differently sized organic and inorganic particles are of great interest in the life and material sciences, as they can be used e.g. as drug carriers, fluorescent sensors, and multimodal labels in bioanalytical assays and imaging applications.1 Particle performance in such applications depends mainly on the sum of their intrinsic physicochemical properties. Here, the surface chemistry, i.e., the total number of surface functional groups (FG) and the number of FG accessible for subsequent modification with ligands and/or biomolecules, is one of the key parameters. Moreover, the surface chemistry of these materials controls the behavior and fate of the particles when released to the environment or taken up by cells. Nevertheless, it is still relatively rare that FG are quantified in particle safety studies. Methods for FG quantification should be simple, robust, reliable, fast, and inexpensive, and allow for the characterization of a broad variety of materials differing in size, chemical composition, and optical properties. Aiming at the development of simple, versatile, and multimodal tools for the quantification of bioanalytically relevant FG such as amine2,3, carboxy2,3, thiol, and aldehyde4 functionalities, we designed a catch-and-release assay utilizing cleavable probes that enable the quantification of the cleaved-off reporters in the supernatant after particle separation, and thus, circumvent interferences resulting from particle light scattering and sample-inherent absorption or emission.2 The potential of our cleavable probes for the quantification of carboxy and amino groups was demonstrated for commercial and custom-made polymer and silica particles of varying FG densities, underlining the benefit of the catch-and-release assays as a versatile method for the FG quantification on all types of transparent, scattering, absorbing and/or fluorescent particles.2,3 In the future, our cleavable probe strategy can be easily adapted to other analytical techniques requiring different reporters, or to different types of linkers that can be cleaved thermally, photochemically, or by pH, utilizing well-established chemistry, e.g. from drug delivery systems. It can contribute to establish multi-method characterization strategies for particles to provide a more detailed picture of the structure-properties relationship and thus can support the design of sustainable and safe(r) materials. T2 - Nanosafety 2020 CY - Online meeting DA - 05.10.2020 KW - Optical quantification KW - Surface functional groups KW - Polymer particles KW - Silica particles KW - Cleavable probe PY - 2020 AN - OPUS4-51418 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herter, Sven-Oliver T1 - Quantifying ergot alkaloids in food using stable isotopically labeled standards N2 - Ergot alkaloids (EAs) are toxic secondary metabolites produced by fungi of the genus Claviceps. They grow on rye and wheat, and are introduced into the food chain through the harvest of infected cereals. Therefore, the European Union has established a maximum level for the 12 most abundant EAs. In order to improve the quantification, stable isotopically labelled EAs were synthesized for the first time and their performance was evaluated in comparison to the current European standardmethod in different foodstuff. T2 - ANAKON 2025 CY - Leipzig, Germany DA - 10.03.2025 KW - Reference Material KW - HPLC-MS/MS KW - Mycotoxins KW - Standards KW - Stable Isotope Dilution Analysis PY - 2025 AN - OPUS4-62752 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nirmalananthan-Budau, Nithiya T1 - A Series of New Pyrrolidinylvinylquinoxaline Derivatives as possible fluorescent nanoreporters with Aggregation-Induced Emission (AIE) T2 - 14th Conference on methods and applications of flourescence (MAF) CY - Würzburg DA - 2015-09-13 PY - 2015 N1 - Geburtsname von Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. - Birth name of Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. AN - OPUS4-34903 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koshkina, Olga T1 - Multifunctional Fluorescent Poly(organosiloxane) Nanoparticles; Synthesis and Characterization in Biological Environments by Dynamic Light Scattering T2 - Polydays 2012 CY - Berlin, Germany DA - 2012-09-30 PY - 2012 AN - OPUS4-27316 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Lifetime-based Discrimination Between Spectrally Matching vis and NIR Emitting Particle Labels and Probes T2 - 16th International Workshop on "Single Molecule Spectroscopy and Ultra Sensitive Analysis in the Life Sciences" CY - Berlin, Germany DA - 2010-09-15 PY - 2010 AN - OPUS4-22084 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Keller, Julia T1 - Electrochemistry-mass spectrometry (EC-MS) as a versatile tool to simulate the biotransformation of citrinin – A comparative study N2 - Mycotoxins can be found worldwide in foods and feed and cause a variety of mold-related health risks which makes it necessary to further examine their toxic effects and metabolic fate in human and other mammals. Beside standard in vitro and in vivo assays with liver cell preparations or rodents an increasing interest in new simulation methods are playing a growing role. Electrochemistry (EC) is one of these novel techniques and has been used successfully and efficiently in pharmacological and drug research for several years now. The primary objective of this study was to determine the capability of EC as a supportive and versatile instrument to elucidate metabolic pathways of mycotoxins. On the example of the food relevant mycotoxin Citrinin a coulometric flow through cell equipped with a carbon working electrode was used to oxidize Citrinin by applying potential between 0.7 and 2.5 V vs. Pd/H2. The electrochemically generated oxidation products were then analyzed by mass-spectrometric detection coupled online to EC (EC-MS) and compared with data from a standard in vitro model with human and rat liver microsomes preparations. To receive a comprehensive assessment of oxidative techniques chemical oxidation by Fenton´s reaction was performed as well. The obtained LC-MS/MS data confirmed the production of Dihydrocitrinone by all of the three tested oxidation systems and demonstrates the potential of EC-MS for the successful prediction of the main phase I metabolic reactions of mycotoxins, since Dihydrocitrinone is the mainly formed metabolite by humans after intake of Citrinin. Beside the identified Dihydrocitrinone from electrochemical, enzymatic and chemical oxidation of Citrinin there is still a number of yet unknown compounds. As the next step structural characterization of the generated oxidation products by NMR and X-ray analysis will be enabled by their large-scale production using preparative EC cells. T2 - Rapid Methods CY - Amsterdam, The Netherlands DA - 07.11.2016 KW - Electrochemistry KW - Mycotoxin KW - Oxidation PY - 2016 AN - OPUS4-38215 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maul, R. T1 - Phomopsins in legumes - a multidimensional approach N2 - Fungal secondary metabolites such as phomopsin A (PHO-A) produced by the fungus Diaporthe toxica are referred to as “emerging” mycotoxins. Recently, we developed a biosynthetic approach to gain access to 15N-isotopically labelled PHO-A as internal standard (IS) for PHO-A matrix independent quantification of PHO-A in various commodities. Aim of the present work was to elucidate the applicability of the new IS for accurate quantification and to investigate the phomopsin formation on various legume seeds as well as plant material. In summary, the applicability of the SIDA-HPLC-MS/MS method could be proven and the potential of D. toxica to produce high amounts of phomopsins under unfavorable conditions on lupins and other legume seeds could be shown. Moreover, a novel toxic methylated PHO-A derivative was unveiled in natural samples infested with D. toxica. T2 - 38. Mycotoxin-Workshop CY - Berlin, Germany DA - 02.05.2016 KW - Phomopsin-Derivate KW - Leguminosen KW - Stabilisotopenverdünnungsanalyse KW - HPLC-MS/MS KW - HRMS-Identifizierung KW - Toxizität PY - 2016 AN - OPUS4-37056 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schloß, Svenja T1 - Neue Trends & Alte Probleme: Das Leguminosenmykotoxin Phomopsin A in einer "worst case"-Betrachtung N2 - Leguminosen wie z.B. Bohnen, Erbsen, Soja und zunehmend auch die Samen der Süßlupine liefern aufgrund ihres hohen Proteingehaltes einen wertvollen Beitrag zu einer veganen oder vegetarischen Ernährung. Jedoch sind Lupinen anfällig für Infektionen mit dem Pilz Diaporthe toxica, der u.a. Phomopsin A als hepatotoxischen Sekundärmetaboliten bildet. Ziel der Arbeiten waren die Gewinnung und Anwendung eines 15N-isotopenmarkierten internen Standards für die HPLC-MS/MS-Analyse dieses Toxins sowie die Quantifizierung der Toxinbildung in einem „worst case“-Szenario. T2 - 50. DGQ-Vortragstagung (Deutsche Gesellschaft für Qualitätsforschung e. V.) CY - Berlin, Germany DA - 14.03.2026 KW - Phomopsin A KW - Leguminosen KW - SIDA-HPLC-MS/MS KW - Quantifizierung KW - Toxinbelastung PY - 2016 AN - OPUS4-37059 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weigert, Florian T1 - Ensemble and single particle studies of the fluorescence properties of core­shell CdSe nanocrystals with different shells and surface chemistries N2 - The optical properties of semiconductor nanocrystals (SCNC) are controlled by constituent material, particle size, and surface chemistry, specifically the number of dangling bonds favoring nonradiative deactivation, and hence also by particle synthesis. In this respect, the fluorescence properties of coreshell CdSe SCNCs with different shells and surface chemistries were studied on ensemble and single particle level, using steady state and timeresolved fluorometry and confocal microscopy with time correlated single photon counting detection. Special emphasis was dedicated to correlate ensemble photoluminescence (PL) quantum yields and decay kinetics with particle brightness, PL time traces, and the Ontime fraction of the single SCNCs. Additionally, the confocal PL images were correlated with AFM measurements in order to derive the amount of absorbing, yet nonemisssive ”dark” SCNCs, the presence of which leading to an underestimation of ensemble PL quantum yields. The results of this study can help to identify synthetic routes and surface modifications minimizing the fraction of dark SCNC, thereby closing the gap to the ultimate goal of colloidally and photochemically stable SCNCs with a PL quantum yield of close to unity. T2 - FQDots16 CY - Berlin, Germany DA - 05.09.2016 KW - Confocal KW - QY KW - QD KW - SCNC KW - Single molecule KW - AFM PY - 2016 AN - OPUS4-38119 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grauel, Bettina T1 - Nd as sensitizer in NaYF4:Yb,Er,Nd tri-doped upconversion nanocrystals N2 - In recent years, upconversion nanocrystals (UCNC) have shown great promise for biological and medical applications, mainly because of their excitation in the NIR region, which provides minimum fluorescence background and a rather deep penetration into biological samples, as opposed to excitation in the visible or UV region. Moreover, they show a multitude of characteristic narrow emission bands as basis for ratiometric measurements. Commonly, Yb is the sensitizer of choice, because of a comparatively high absorption cross section, simple energy scheme, and rather efficient energy transfer to the activator, mostly Er, Tm or Ho. A main disadvantage of the use of Yb as sensitizer for biological and medical applications is its absorption band at 976 nm and hence the use of an excitation wavelength at which water has a non-negligible absorption. This can lead to significant sample heating, especially at long illumination times or high excitation power densities, and thus, tissue damage or even cell death. A possible solution is the tri-doping of UCNC with Nd as sensitizer, which can be excited efficiently at around 800 nm, where water absorption is at minimum. The use of Nd as a sensitizer and Yb as a bridge between Nd and the activator Er in NaYF₄ nanocrystals is a relatively new way to overcome the problems of heating of samples in an aqueous environment. Disadvantages can arise from the tri-doping, which can favor non-radiative relaxation due to the more complicated excitation process compared to e.g., simple Yb,Er-doped UCNC, which might lower the upconversion quantum yields in these tri-doped systems. In order to quantify clear advantages, NaYF₄:Yb,Er,Nd nanoparticles were synthesized and spectroscopically studied using an 8 W 804 nm laser diode and a custom-designed Edinburgh instruments FSP980 spectrometer. Wavelength-dependent studies of the emission intensities and the decay kinetics of these tri-doped UCNC at different excitation power densities and excitation pulse widths revealed the clear advantages of preventing water absorption on measurable luminescence signals. We were able to show the influence of pulse width and excitation power density on the luminescence intensities and decay kinetics lifetimes at different emission wavelengths. Additionally, we can clearly discern power density-dependent and independent peaks in the emission spectra. In summary, we demonstrate that the tri-doping of NaYF₄:Yb,Er,Nd nanoparticles is a very promising approach to render UCNC more efficient and to make them better suitable for biological and medical applications requiring measurements in aqueous environment. T2 - UPCON 2016 Conference CY - Breslau, Poland DA - 23.05.2016 KW - UCNP KW - Nd-sensitizer KW - excitation power density PY - 2016 AN - OPUS4-37224 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Keller, Julia T1 - Coupling of electrochemistry with LC/MS for generation and identification of mycotoxin oxidation products N2 - Mycotoxins cause a variety of mold-related health risks which makes it necessary to further examine their metabolic pathways in human and other mammals. Beside standard in vitro assays with liver cell microsomes an increasing interest in new and rapid simulation techniques are playing a growing role in mycotoxin research. Herein, the coupling of electrochemistry with liquid chromatography and mass spectrometry (EC/LC/MS) is presented as fast and simple method to investigate the oxidative fate of mycotoxins. For this case study, two food relevant mycotoxins (zearalenone and citrinin) were selected. Experiments were performed by using an electrochemical flow through cell integrated in the flow path of the autosampler of the chromatographic system. The reaction mixture was separated by a RP-C18 column and analyzed by a single quadrupole MS (Figure 1). Oxidation products were generated by applying potentials of 400, 800, 1200 and 1600 mV vs Pd/H2 using a glassy carbon working electrode. Different oxidation reactions like hydroxylation, dehydrogenation and dimerization lead to a diverse product pattern of the investigated mycotoxins. In a comparative study, electrochemical generated reaction products were compared with metabolites produced by human and rat liver microsomes in vitro. The obtained data show that EC/LC/MS is a versatile and promising tool in mycotoxin research to support metabolic investigations of known and unknown mycotoxins. T2 - Mycotoxin Workshop CY - Bydgoszcz, Poland DA - 19.06.2017 KW - Electrochemistry KW - Mycotoxin KW - LC/MS KW - Oxidation PY - 2017 AN - OPUS4-40779 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Lifetime-based Discrimination between Spectrally Matching vis and NIR Ermitting Particle Labels and Probes T2 - BIOS SPIE Photonics West 2011 CY - San Francisco, CA, USA DA - 2011-01-22 PY - 2011 AN - OPUS4-23534 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Emission Standards for the Simple Characterization of Fluorescence Measuring Systems T2 - 2004 Eastern Analytical Symposium CY - Somerset, NJ, USA DA - 2004-11-15 PY - 2004 AN - OPUS4-4485 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grabolle, Markus T1 - Fluorometric methods for the measurement of photoluminescence quantum yields T2 - Colloquium Optische Spektroskopie COSP 2011 CY - Berlin, Germany DA - 2011-03-21 PY - 2011 AN - OPUS4-23538 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Neuer Isotopenstandard zur Quantifizierung von cis-Zearalenon in Speiseölen T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27818 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Siegel, David T1 - Current mycotoxin research at BAM T2 - Mycotoxin Workshop 2011 CY - Freising, Germany DA - 2011-05-30 PY - 2011 AN - OPUS4-23780 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Traceable characterization of fluorescence measuring systems with spectral fluorescence standards T2 - Campustage der Humboldt-Universität zu Berlin CY - Berlin, Germany DA - 2003-12-02 PY - 2003 AN - OPUS4-7234 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Li, Y. T1 - Spectroscopic behavior of bifunctional biphenyl-type molecules and their cation complexes T2 - 8th Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Prague, Czech Republic DA - 2003-08-24 PY - 2003 AN - OPUS4-7232 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Buge, Hans-Gerhard T1 - Präparation und Charakterisierung fester natürlicher Materialien zur Herstellung von Referenzmaterialien für die organisch-chemische Analytik T2 - InCom '97 CY - Düsseldorf, Germany DA - 1997-03-17 PY - 1997 AN - OPUS4-5669 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gebauer, J. T1 - Total Synthesis of (-)-Altenuene-d6 T2 - 2nd European Conference on Natural Products CY - Frankfurt am Main DA - 2015-09-06 PY - 2015 AN - OPUS4-33749 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - Bioimaging with rationally designed NIR-flourescent nanosensors T2 - NAMDIATREAM Winter School on Bioimaging, sensing and therapeutic applications of nanomaterials CY - Villars-sur-Ollon, Switzerland DA - 2013-03-03 PY - 2013 AN - OPUS4-27808 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Influence of the Dimerization of Fluorescent Dyes on the Spectroscopic Properties of their lgG Conjugates T2 - Molekulare Bildgebung 10 (MOBI10) CY - Seeon-Seebruck, Germany DA - 2010-11-04 PY - 2010 AN - OPUS4-22661 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Bright Functional Herceptin Conjugates with a Remarkably High Number of Fluorophores for Optical Imaging T2 - 5th EuCheMS CY - Istanbul, Turkey DA - 2014-08-31 PY - 2014 AN - OPUS4-31849 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Leubner, S. T1 - Comprehensive Analytical Study of the Surface Chemistry of Semiconductor Nanocrystals T2 - EuCheMS Summer School CY - Bari, Italy DA - 2012-06-17 PY - 2012 AN - OPUS4-26986 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - NIR-Emissive O2-Nanosensors for Biomarker Imaging T2 - Biosensor Symposium CY - Wildau, Germany DA - 2013-03-10 PY - 2013 AN - OPUS4-27810 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Geißler, Daniel T1 - Synthesis of polymeric nanobeads with different surface group densities and their charaterization using multimodal cleavable reporters and lanthanide tags N2 - Polymeric nanoparticles (NP) are of increasing importance for a wide range of applications in the material and life sciences, including their use as drug carriers, fluorescent sensors and multimodal reporters in a large variety of bioassays and bioimaging studies. Application-relevant properties of NP include their size (and size distribution), shape, optical properties, and ease of subsequent functionalization, e.g. with linkers, sensor molecules, and bioligands. In this respect, knowledge of the chemical nature, the total number of surface groups and the number of groups accessible for subsequent coupling reactions is mandatory.1 Commercially available polystyrene NP often contain different additives like stabilizers, radical starters and crosslinkers, which can influence the quantification of surface functionalities. Moreover, they often have unknown surface group densities that may vary from batch to batch, which complicates or even hampers their reliable use in many (bio)applications. To circumvent these issues, we synthesized amino- and carboxy-functionalized, monodisperse 100 nm polystyrene NP with three different, well-defined surface group densities. Using a recently developed approach for the quantification of functional groups on nano- and microparticles with cleavable reporters,2 we quantified the assessible functional groups on the self-synthesised PS particles via optical spectroscopy (photometry) and inductively coupled optical emission spectrometry (32S ICP-OES). In addition, we developed a fluorimetric approach for the quantification of surface functional groups on nanoparticles based on the labelling with luminescent lanthanide complexes (LLC). In contrast to common organic dyes, LLC are not prone to photo¬luminescence quenching arising from reabsorption or dye aggregation, and thus, enable a reliable fluorometric quantification of the assessible functional groups on NP surfaces. Moreover, lanthanide tags can be detected with high specificity and sensitivity with analytical techniques such as XPS and ICP-MS, which allow for the multimodal validation of the fluorometric quantification approach. T2 - RSC-NPL Symposium "Nanoparticle concentration – critical needs and state-of-the-art measurement" and EMPIR 14IND12 Innanopart Open Day CY - London, UK DA - 24.05.2018 KW - Nanoparticle KW - Functional group KW - Quantification PY - 2018 N1 - Geburtsname von Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. - Birth name of Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. AN - OPUS4-44836 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riedel, Juliane T1 - PFAS determination in wastewater – monitoring and quality assurance N2 - Per- and polyfluoroalkyl substances (PFAS) are well-known as “forever chemicals” and persistent pollutants. The potential release of PFAS from different anthropogenic sources has gained increasing attention in the past years. This creates a need for the monitoring of PFAS in environmental matrices. Due to their high polarity and mobility, PFAS determination in surface-, ground- and wastewater is of particular interest for monitoring purposes. The investigation of PFAS contaminations in real wastewater samples is extremely challenging because of their high and varying matrix loads, and the high requirements for PFAS target-analysis regarding sensitivity according to current regulations (e.g., Drinking Water Ordinance, TrinkwV). Since there is hardly any quality-assured measurement data available for PFAS quantified in wastewater, a monitoring project was conducted in 2024/2025 to determine PFAS levels from various wastewater sources in the state of Brandenburg (Germany). The main results will be presented and discussed with emphasis on analytical issues related to the HPLC-MS/MS determination. While investigations were focused on the 20 PFAS targets based on TrinkwV, also several other relevant PFAS compounds, e.g., trifluoroacetic acid (TFA) and HFPO-DA (GenX), were included into the monitoring. T2 - PFAS – Challenges and Scientific Perspectives in Human Health Risk Assessment CY - Berlin, Germany DA - 08.10.2025 KW - Quality assurance KW - PFAS in wastewater KW - Monitoring of PFAS in wastewater KW - GenX in wastewater KW - TFA in wastewater PY - 2025 AN - OPUS4-64389 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Absolute Photoluminescence Quantum Yields and Lifetimes of Differently Sized Hexagonal ?-NaYF4: 2 % Er3+, 20 % Yb3+ Upconversion Nanoparticles in Cyclohexane and Water T2 - 14th Conference on methods and applications of flourescence (MAF) CY - Würzburg DA - 2015-09-13 PY - 2015 AN - OPUS4-34493 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Design and characterization of a new contrast agent for the specific and sensitive detection of tumor via in vivo fluorescence imaging T2 - Method and Application of Fluerescence (MAF10) CY - Salzburg, Austria DA - 2007-09-09 PY - 2007 AN - OPUS4-16406 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wegner, Karl David T1 - Exploring the photoluminescence of gold NCs and Ag2S NPs to boost their SWIR emission N2 - Current challenges and objectives for non-invasive optical bioimaging are deep tissue penetration, high detection sensitivity, high spatial and temporal resolution, and fast data acquisition. A promising spectral window to tackle these challenges is the short-wave infrared (SWIR) ranging from 900 nm to 1700 nm where scattering, absorption, and autofluorescence of biological components are strongly reduced compared to the visible/NIR. At present, the best performing SWIR contrast agents are based on nanomaterials containing toxic heavy-metal ions like cadmium or lead, which raises great concerns for biological applications. Promising heavy-metal free nanoscale candidates are gold nanoclusters (AuNCs) and Ag2S nanoparticles (NPs). The photoluminescence (PL) of both types of nanomaterials is very sensitive to their size, composition of their surface ligand shell, and element composition, which provides an elegant handle to fine-tune their absorption and emission features and boost thereby the size of the signals recorded in bioimaging studies. Aiming for the development of SWIR contrast agents with optimum performance, we dived deeper into the photophysical processes occurring in these nanomaterials, thereby exploring in depth how the environment, surface ligand composition, and the incorporation of transition metals influence the optical properties of AuNCs and Ag2S NPs. We observed a strong enhancement of the SWIR emission of AuNCs upon exposure to different local environments (in solution, polymer, and in the solid state). Addition of metal ions such as Zn2+ to Ag2S based NPs led to a strong PL enhancement, yielding PL quantum yields of about 10% and thus making them highly suitable for non-invasive deep imaging of vascular networks and 3D fluid flow mapping. T2 - NaNaX 10 - Nanoscience with Nanocrystals CY - Klosterneuburg, Austria DA - 03.07.2023 KW - Quantum dots KW - Ag2S KW - Fluorescence KW - SWIR KW - Gold nanocluster KW - Nanomaterial KW - bioimaging PY - 2023 AN - OPUS4-58104 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Siegel, David T1 - Novel applications of hydrazine chemistry in the instrumental analysis of food mycotoxins T2 - 32. Mycotoxin Workshop CY - Copenhagen, Denmark DA - 2010-06-14 PY - 2010 AN - OPUS4-21091 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scholtz, Lena T1 - Luminescence Encoding of Polymer Microbeads during Polymerization N2 - Luminescent polymer microbeads are applied in bead-based platforms for biomolecule binding interactions, and the encoding of these beads is important for the realization of optically distinguishable barcodes. While dye- encoded beads often suffer from photobleaching and spectral crosstalk due to the relatively broad dye emission band, quantum dot (QD)-encoded beads absorb in a very broad wavelength range and reveal narrow emission bands, which enables simultaneous excitation of beads stained with differently colored QDs. To address existing limitations of QD encoding, we have explored simple and effective approaches to homogeneously stain polymer particles and identify suitable polymerization reactions and QD surface ligands that tackle these challenges. T2 - Bad Honnef Physics School 2021 CY - Bad Honnef, Germany DA - 18.07.2021 KW - Polymerization KW - Quantum dots KW - Encoding KW - Microbeads KW - Luminescence PY - 2021 AN - OPUS4-53038 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maul, Ronald T1 - Performance and Efficiency of Cleanup Columns for Selected Fusarium Mycotoxins and Conjugates T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-27836 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennrich, Gunther T1 - Redox-active, Fluorescent Receptors with Iminoyl Thiourea Binding Sites Hydrogen Bond-Mediated Anion and Dicarboxylic Acid Recognition T2 - 34th International Conference on Coordination Chemistry CY - Edinburgh, Scotland DA - 2000-07-09 KW - Fluoreszenz KW - Anionen KW - Molekulare Erkennung PY - 2000 AN - OPUS4-895 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Würth, Christian T1 - Absolute photoluminescence quantum yields of quantum dot-rods with various aspect ratios T2 - 30 years of colloidal quantum dots CY - Paris, France DA - 2014-05-26 PY - 2014 AN - OPUS4-30785 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Temgoua, Ranil C. T. T1 - Understanding the behavior of phenylurazoletyrosine- click electrochemical reaction N2 - The electrochemical behavior of 4-phenylurazole (Ph-Ur) was studied and the latter was used as a molecular anchor for the electrochemical bioconjugation of tyrosine (Y). Cyclic voltammetry (CV) and controlled potential coulometry (CPC) allowed to generate in situ from phenylurazole the PTAD (4-phenyl-3H-1,2,4-triazole-3,5(4H)-dione) species on demand for tyrosine electrolabeling. To evaluate the performance of tyrosine electrolabeling, coulometric analyses at controlled potentials were performed on solutions of phenylurazole and the phenylurazole-tyrosine mixture in different proportions (2:1, 1:1, and 1:2). The electrolysis of the phenylurazole-tyrosine mixture in the ratio (1:2) produced a charge of 2.07 C, very close to the theoretical value (1.93 C) with high reaction kinetics, a result obtained here for the first time. The products obtained were identified and characterized by liquid chromatography coupled to high-resolution electrospray ionization mass spectrometry (LC-HRMS and LC-HRMMS). Two products were formed from the click reactions, one of which was the majority. Another part of this work was to study the electrochemical degradation of the molecular anchor 4-phenylazole (Ph-Ur). Four stable degradation products of phenylurazole were identified (C7H9N2O, C6H8N, C6H8NO, C14H13N4O2) based on chromatographic profiles and mass spectrometry results. The charge generated during the electrolysis of phenylurazole (two-electron process) (2.85 C) is inconsistent with the theoretical or calculated charge (1.93 C), indicating that secondary/parasitic reactions occurred during the electrolysis of the latter. In conclusion, the electrochemically promoted click phenylurazole-tyrosine reactions give rise to click products with high reaction kinetics and yields in the (1:2) phenylurazole-tyrosine ratios, and the presence of side reactions is likely to affect the yield of the click phenylurazole-tyrosine reaction. T2 - Les Journées d’Électrochimie 2024 CY - Saint-Malo, France DA - 01.07.2024 KW - Electrochemistry KW - Mass Spectrometry KW - Simulation PY - 2024 AN - OPUS4-61063 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Russo, Francesco Friedrich T1 - Gas chromatography low energy-electron ionisation mass spectrometry (GC LE EI MS) as a softer ionisation method for non-targeted analysis N2 - Mass spectrometry (MS)-based non-targeted screening (NTS) methods are important tools due to their high throughput and sensitivity. The high throughput and sensitivity have contributed to the method’s increased adoption in forensic, health, and environmental sciences. Gas chromatography electron ionisation mass spectrometry (GC-EI-MS) methods in particular show high reproducibility of fragmentation patterns and have the advantage of vast spectral libraries. Nevertheless, the high energy imparted to molecules by standard 70 eV EI sources frequently results in a loss of the molecular ion signal. The depleted molecular ion signal renders the identification of compounds not included in spectral libraries more difficult, as straightforward molecular formula assignment is not achieved. Furthermore, the high degree of fragmentation and the resulting depletion of signals with high m/z, leads to reduced discriminatory power. Soft ionisation techniques alleviate the inherent disadvantages of EI-MS in molecular formula determination but do not harness the knowledge stored in EI spectral libraries. Low energy (LE)-EI-MS, being a softer version of EI, has recently seen increased interest. LE-EI-MS keeps high spectral similarity with the standard 70 eV EI while reducing the depletion of signals of molecular ions and of higher m/z ions. The hyphenation of LE-EI-MS to GC is straightforward, keeping the high chromatographic resolution. LE-EI-MS has shown promise in fluxomics [1], doping analytics [2, 3], metabolomics [4], fingerprinting of foods [5, 6], and the identification of isomers in motor oil mixtures [7]. Our objective is the comparison of LE-EI-MS to alternative soft ionisation methods, e.g. APCI-MS, and the development of a non-targeted LE-EI-MS workflow, including highly automated data processing and annotation pipeline. In a first phase 13 compound libraries are measured at 14, 18, and 70 eV. Molecular ion abundance and similarity to standard 70 eV spectra are evaluated. Furthermore, common neutral losses and fragments are identified and included as an extension of a previously published annotation tool (R package InterpretMSSpectrum [8, 9]). T2 - Adlershofer Forschungforum CY - Berlin, Germany DA - 11.11.2024 KW - Mass Spectrometry (MS) KW - Non-targeted screenings (NTS) KW - Gas Chromatography (GC) KW - Low Energy Electron Ionisation Mass Spectrometry (LE-EI-MS) PY - 2024 AN - OPUS4-61666 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Herter, Sven-Oliver T1 - Isotopically labeled ergot alkaloids: A step toward safer foodstuffs N2 - Ergot alkaloids form a toxicologically relevant group of mold toxins (mycotoxins) that are among the most common contaminants of food and animal feed worldwide. It is therefore imperative that reliable controls are necessary in order to minimize both the health risks and the economic damage. In consequence of their toxicological relevance, EU limit values for 12 priority ergot alkaloids were established for the first time in 2022. These limits range from 500 µg/kg in rye milling products down to 20 µg/kg in processed cereal-based foods for infants and young children. Despite the use of high-performance liquid chromatography-mass spectrometry to quantify low concentrations of ergots in food, the European standard analytical procedure cannot be fully applied due to the unavailability of isotopically labeled reference standards. The complex structure of the ergot alkaloids makes a total synthesis extremely challenging, expensive, and time-consuming. Consequently, we focused on a semi-synthetic approach with the aim of specifically demethylating the N6-atom of the lysergic acid moiety, a shared structural feature among all ergot alkaloids. This resulted in the formation of a norergot alkaloid, which was purified using preparative HPLC. The reaction of the norergot alkaloid with an isotopically labeled electrophilic methyl source, such as iodomethane or dimethyl sulfate, yielded the desired isotopically labeled ergot alkaloid. This methodology enabled the successful synthesis of all 12 stable isotopically labeled priority ergot alkaloids worldwide for the first time. Herein we present the problem of unavailability of these isotopically labeled standards and our approach to solve this urged demand. T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 11.11.2024 KW - Reference Material KW - HPLC-MS/MS KW - Mycotoxins KW - Ergot Alkaloids KW - Isotopic Labeling PY - 2024 AN - OPUS4-61691 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - NIR-floureszente Mikro- und Nanopartikel für die Bioanalytik T2 - Zukunft Made in Adlershof CY - Berlin, Germany DA - 2009-09-08 PY - 2009 AN - OPUS4-20642 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mekonnen, Tessema Fenta T1 - Electrochemistry coupled to mass spectrometry for biotransformation and metabolite elucidation of pesticides N2 - Online coupling of electrochemistry with mass spectrometry (EC/MS) is highly promising for prediction and simulation of metabolic processes of xenobiotics in living organisms. Less time and cost of analysis, matrix free detection, and automation make EC/MS-based metabolomics superior over traditional in-vivo and in-vitro methods. Furthermore, EC/MS has a special feature to identify reactive intermediates and reaction mechanisms. The main objective of this work was to simulate biotransformation processes of pesticides by EC/MS and to elucidate the Transformation products (TPs). We have studied the oxidative phase I metabolism processes of selected pesticides by EC/MS or with liquid chromatography (EC/LC/MS) and compared the derived TPs with cytochrome based metabolites. The electrochemical TPs were produced by boron-doped diamond electrode, separated by LC, and detected by single quadrupole ESI-MS online. Structural identification of both electrochemical oxidation and liver microsome metabolites were based on accurate mass measurements by FT-ICR high-resolution mass spectrometry, isotopic pattern, MS/MS fragmentation, and Retention time alignments. Main phase I oxidative metabolites by P-oxidation, N- & O- dealkylation, dechlorination, hydroxylation, and -OH- oxidation have been identified. Many targeted and untargeted metabolites have been identified by EC/(LC)/MS. Additionally, reactive species have been trapped online by biomolecules to study phase II conjugative reactions. Furthermore, we synthesized TP standards by EC/MS and applied them for pesticide's TPs occurrence investigation in foodstuf matrices. T2 - European Mass Spectrometry Conference (EMSC) 2018 CY - Saarbrücken, Germany DA - 11.03.2018 KW - Transformation product KW - EC/LC/MS KW - Pesticide KW - Biotransformation KW - Electrochemical oxidation PY - 2018 AN - OPUS4-44495 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riedel, Juliane T1 - Interlaboratory comparison study for PFAS analysis in soils and eluates N2 - PFAS (per- and polyfluoroalkyl substances) comprise more than 10,000 compounds that have been used in various industrial and consumer products for decades. However, PFAS represent a growing problem because of their persistence in the environment and their adverse health effects. Therefore, reliable PFAS analysis of environmental compartments is indispensable but poses a complex challenge due to the large number of individual compounds in widely varying concentrations. The investigation and assessment of PFAS contamination in soil, as well as the determination and monitoring of necessary remediation measures, require comparable and high-quality standards in chemical analysis. Interlaboratory comparison studies (ILCs) are suitable tools to ensure these quality standards. Thus, an ILC involving 17 participating laboratories in Germany was organized and conducted by BAM, SenMVKU, and BImA in 2024 to determine PFAS in real soil samples (solid matter and eluates). Essential results of the ILC will be presented focusing on analytical issues related to the HPLC-MS/MS determination of the PFAS target compounds based on current regulations but also alternatives such as GenX and Capstone A/B. Furthermore, unexpectedly observed effects interfering with the quantification of specific PFAS will be discussed. T2 - PFAS – Challenges and Scientific Perspectives in Human Health Risk Assessment CY - Berlin, Germany DA - 08.10.2025 KW - Quality assurance KW - PFAS in soil KW - PFAS in eluate KW - Interlaboratory comparison study PY - 2025 AN - OPUS4-64388 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dhamo, Lorena T1 - Synthesis and optical characterization of ternary Quantum Dots: AgInS /ZnS N2 - Ternary semiconductors quantum dots (t-QD) are Cd-free nanocrystals made from I-III-VI group elements like silver or copper, indium and sulfide yielding CIS (CuInS2) or AIS (AgInS2) QDs. They are interesting alternatives to Cd-based QDs for applications as solar concentrators or optically active material for solar cells, light emitting diodes (LED) or reporters for diagnostic assays. To avoid ligand exchange procedures for high quality QDs, commonly synthesized in high boiling apolar solvents with apolar surface ligands, AIS QDs are synthesized in aqueous solution, required for bioanalytical application, by a microwave-assisted procedure. The surface of these QDs is passivated by a ZnS shell to enhance photoluminescence quantum yield (PL QY) and prevent material decomposition and oxidation. The resulting AIS/ZnS QDs exhibit broad PL spectra in the visible and near infrared, tunable by size and chemical composition. I will show the simple synthetic procedure and a spectroscopic study of different AIS QDs evaluating their PL properties and stability, PL QY, and PL decay kinetics. The analyzed sample showed long lifetimes, relatively high QY (50%) and good stability. Ligand conjugation is also performed to allow the embedding in polymer matrix, which requires apolar cappng. The simple aqueous synthesis together with the tunable emission color, the high PL QY, the high absorption coefficients and the long luminescence lifetimes make these t-QDs promising Cd-free materials for many different applications in the material and life sciences. T2 - NanoWorkshop CY - Berlin, Germany DA - 14.05.2018 KW - Synthesis KW - Quantum dots KW - Optical spectroscopy PY - 2018 AN - OPUS4-45115 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Temgoua, Ranil C. T. T1 - Hyphenated Electrochemistry-Liquid Chromatography-Mass Spectrometry (EC-LC-MS) N2 - The coupling of electrochemistry with mass spectrometry (EC-MS) represents a revolutionary approach for studying redox-active compounds, which constitute over 90% of known chemical entities. This poster demonstrates the versatility of EC-MS as a rapid and environmentally friendly alternative to traditional in-vivo and in-vitro methods. Our focus encompasses three key applications: Simulation of drug metabolism pathways, investigation of environmental xenobiotic degradation/fate (eFate), and green synthesis of analytical standards. T2 - 56th annual conference of the DGMS (Deutschen Gesellschaft für Massenspektrometrie) CY - Göttingen, Germany DA - 04.03.2025 KW - Electrochemistry KW - Mass Spectrometry KW - Emerging pollutants KW - Transformation products PY - 2025 AN - OPUS4-63517 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Saleh, Maysoon I. T1 - Synthesis and systematic characterization of core-muti-shell NaYF4:Er3+, Yb3+@SiO2@Au nanoparticles for the enhancement of fluorescence emission N2 - The aim of this work is to investigate the Synthesis of core-shell upconverting nanoparticles (UCNP). The UCNP are coated with a Gold Shell to plasmonically enhance the fluorescence emision. The distance between the UCNP core and the plasmonic structure is tuned by the aid of a silica at different Shell thicknesses. T2 - Work shop on Refer ence Nanomaterials jointly organized by BAM and PTB CY - Berlin, Germany DA - 14.05.2018 KW - Upconversion nanoparticles KW - Silica coating KW - Plasmonic enhancement PY - 2018 AN - OPUS4-45067 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sebald, M. T1 - Under Investigation: Novel Approach towards the Synthesis of Deuterium-labelled Alternariol- and Alternariol monomethylether-Standards for the HPLC-MS/MS-Analysis in Food & Feed N2 - Alternariol (AOH) and Alternariol monomethylether (AME) are two secondary metabolites of Alternaria fungi which can be found in various foodstuffs like tomatoes, nuts and grains. Due to their toxicity and potential mutagenic activity the need for the development of high-throughput methods for the supervision of AOH- and AME-levels is of increasing interest. As the availability of both native and labelled AOH and AME analytical standards is very limited we herein wish to present a novel concise approach towards their synthesis employing a ruthenium-catalyzed ortho-arylation4 as the key step. T2 - 13th International Symposium on the Synthesis and Applications of Isotopes and Isotopically Labelled Compounds CY - Prague, Czech Republic DA - 03.06.2018 KW - Mycotoxins KW - Mass Spectrometry PY - 2018 AN - OPUS4-45268 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Behnke, Thomas T1 - Targeted NIR-emissive nanosensors for bioimaging T2 - 7th Senftenberger Innovationsforum Multiparameteranalytik CY - Senftenberg, Germany DA - 2013-04-18 PY - 2013 AN - OPUS4-28468 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kittler, Katrin T1 - Untersuchung der systematischen Verfügbarkeit des Cyanotoxins Cylindrospermopsin für Brassicaceae T2 - Deutscher Lebensmnittelchemikertag 2011 CY - Halle (Saale), Germany DA - 2011-09-12 PY - 2011 AN - OPUS4-24268 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weigert, Florian T1 - Probing the bright and dark fraction of core-shell CdSe nanocrystals with single particle spectroscopy N2 - "The optical properties of semiconductor nanocrystals (SCNC) are controlled by constituent material, particle size, and surface chemistry, specifically the number of dangling bonds favoring nonradiative deactivation. This can lead to a distribution of photoluminescence Quantum yields (PL QY) amongst the SCNC particles, i.e., mixtures of “bright” and “grey” or “dark” SCNCs. Particularly the number of absorbing, yet not emitting particles can have a significant effect on the PL quantum yield obtained in ensemble measurements, leading to ist underestimation. The “dark fraction” is not assessable in common ensemble measurements; it can be probed only on a single particle level using a confocal laser scanning microscope coupled with an AFM. Such a setup was used to study core‐shell CdSe SCNCs with different shells and surface chemistries. Special emphasis was dedicated to correlate brightness, blinking, dark fraction, and decay kinetics of the single SCNCs with the ensemble PL QY and the PL decay kinetics. The results of this study can help to identify new synthetic routes and surface modifications to colloidally and photochemically stable SCNCs with a PL QY of close to unity." T2 - Summer School "EXCITING NANOSTRUCTURES" CY - Bad Honnef, Germany DA - 17.07.2017 KW - Semiconductor KW - Nanoparticle KW - Quantum dot KW - Flourescence KW - CdSe KW - Shell KW - Surface chemistry KW - Single particle spectroscopy PY - 2017 AN - OPUS4-41192 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Andresen, Elina T1 - Non-spherical monodisperse multi-element LiYF4:Yb,Tm nanoparticles as potential reference materials for sizing methods – Design, synthesis & characterization N2 - The use of engineered nanoparticles of different size, shape, and composition is continuously increasing in the life and material sciences. This calls for methods and reference materials enabling the reliable and accurate determination of nanoparticle size, particle size distribution, shape, and number concentration. For nano-object with a simple, i.e, spherical shape, the size can be easily determined from measurements of a single parameter, i.e., diameter, by electron microscopy. For non-spherical particles, that much better reflect the properties of most industrially relevant nanomaterials, new correlative approaches for complete 3D characterization are needed and non-spherical reference particles for establishing such methods and the implementation and validation of the respective data fitting routine are compulsory. Therefore, we are currently exploring the potential of differently sized, bipyramidally shaped LiYF4-based NCs doped with different lanthanide ions as reference materials for sizing methods. T2 - E-MRS Spring CY - Strasbourg, France DA - 27.05.2024 KW - Non-sperical NPS KW - Reference materials KW - SAXS PY - 2024 AN - OPUS4-62133 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Sensitive und selektive Untersuchung des Leguminosen-Mykotoxins Phomopsin A - eine "worst case"-Betrachtung T2 - Eeutsche Gesellschaft für Ernährung e. V. (DGE) - Kongress CY - Fulda DA - 2016-03-02 PY - 2016 AN - OPUS4-34674 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schreiner, M. A1 - Krumbein, A. A1 - Manzei, St. A1 - Rohn, S. T1 - Nachweis der Resorption des Cyanotoxins Cylindrospermopsin durch Brassica-Arten T2 - Deutscher Lebensmittelchemikertag 2012 CY - Münster, Germany DA - 2012-09-10 PY - 2012 AN - OPUS4-26494 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Analytical and Spctroscopic tools for the Design of Highly Flourescent Conjugates T2 - ANAKON 2013 CY - Essen, Germany DA - 2013-03-04 PY - 2013 AN - OPUS4-28471 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Makowski, Maike T1 - Non-invasive GC-MS Analysis of Trichodiene as Volatile Mycotoxin Biomarker in Cereals N2 - Due to the increasing consumption of cereals worldwide, monitoring of growth, storage and processing is becoming more crucial. Particularly when stored, infested grains breed fungal clusters (“hot spots”) in which mycotoxins greatly exceed allowed maximum levels. Because of their unpredictable presence, current sampling and procedures for mycotoxin analysis are complex and contain invasive and cost intensive steps. A possible approach to avoid sampling inaccuracies is the non-invasive analysis of the homogeneous gas phase above the crops, instead of analyzing random samples. However, this procedure requires microbial volatile organic compounds (MVOC´s) being released by the samples. Previous investigations revealed trichodiene to be a precursor in trichothecenes biosynthesis – one of the largest mycotoxin groups with more than 180 compounds. Due to its non-functionalized sesquiterpene structure, quantification of trichodiene using Headspace GC-MS methods is possible (e.g. [1]). Thereby, it could be used as biomarker for trichothecene contamination in foodstuff. However, further studies are necessary. The correlation between trichodiene concentration in the gas phase and trichothecenes mass fraction in the sample must be examined closely to draw conclusions about the trichothecene content in samples. Realizing this idea, would widely extend the applicability of trichodiene and enormously simplify trichothecene quantification. Hence, this first step of an ongoing study aims to develop a laboratory reference method using trichodiene as volatile biomarker to quantify trichothecenes in cereals. Static headspace and SPME-enrichment coupled to gas chromatography with mass spectrometry (GC-MS) were employed. In a second step, this reference method is intended to validate new approaches for fast on-site screening of trichodiene in cereals. T2 - 40th Mycotoxin Workshop CY - Munich, Germany DA - 11.06.2018 KW - Trichodiene KW - Gaschromatography-Mass Spectrometry KW - Mycotoxin Biomarker PY - 2018 AN - OPUS4-45314 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mayer-Enthart, Elke T1 - Rolling circle amplification (RCA) - a new detection method for the sensitive measurement of interactions on BioChips T2 - Method and Application of Fluerescence (MAF10) CY - Salzburg, Austria DA - 2007-09-09 PY - 2007 AN - OPUS4-16408 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuhne, Maren T1 - Flow Cytometry (FACS) for characterization and sorting of murine hybridoma cells in order to select for mab production T2 - Potsdam Days on Bioanalysis 2012 CY - Potsdam, Germany DA - 2012-11-07 PY - 2012 AN - OPUS4-27437 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maul, Ronald T1 - Evaluierung und Validierung eines fluoreszenzpolarimetrischen Probenvorbereitungs- und Messverfahrens zur Mykotoxinanalyse T2 - ANAKON 2011 CY - Zurich, Switzerland DA - 2011-03-22 PY - 2011 AN - OPUS4-23319 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tavernaro, Isabella T1 - Development of amorphous silica particle based reference materials for surface functional group quantification N2 - Functionalized nanomaterials (NM) with their unique size-dependent properties are of increasing relevance for current and future developments in various fields such as medical and pharmaceutical industry, computing, electronics or food and consumer products. The performance and safety of NM are determined by the sum of their intrinsic physicochemical properties.1 Besides other key parameters, the particle surface chemistry, which is largely controlled by the chemical nature and density of functional groups and ligands, must be considered for a better performance, stability, and processibility of NM, as well as their interaction with the environment. Thus, particle standards with well-designed surfaces and methods for functional group quantification can foster the sustainable development of functional and safe(r) NM.2 Here we provide a brief overview of the ongoing research in division Biophotonics to design tailored amorphous silica reference particles with bioanalytically relevant functional groups and ligands, for the development of standardized and validated surface functional group quantification methods. T2 - Workshop NanoRiskSD project CY - Berlin, Germany DA - 09.06.2022 KW - Nanoparticle KW - Surface analysis KW - Silica KW - Fluorescence KW - Assay PY - 2022 AN - OPUS4-55004 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Siegel, David T1 - Quantification of the Alternaria mycotoxin tenuazonic acid by HPLC-Ion Trap MS2 after derivatization with 2,4-dinitrophenylhydrazine T2 - The fifth World Mycotoxin Forum 2008 CY - Noordwijk, Netherlands DA - 2008-11-17 PY - 2008 AN - OPUS4-18465 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lörchner, Dominique T1 - Untersuchung von PBFSM - Abbau und Transformationsprodukte in Umweltkompartimenten T2 - 44. Deutscher Lebensmittelchemikertag CY - Karlsruhe DA - 2015-09-14 PY - 2015 AN - OPUS4-34217 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fidan, Zerrin T1 - Fluorometric Temperature Sensors with FRET-based Molecular Beacons T2 - Deutsche Biosensor Symposium 2015 CY - München, Germany DA - 2015-03-11 PY - 2015 AN - OPUS4-33652 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Makowski, Maike T1 - Etablierung einer nicht-invasiven GC-MS Methode zur Messung von Trichodien als volatilen Mykotoxin-Marker in Getreide N2 - Aufgrund des weltweit steigenden Getreidekonsums ist die Überwachung des Getreidewachstums, der Lagerung und der Verarbeitung von immer größerer Bedeutung. Besonders während der Lagerung bilden Schimmelpilze sogenannte „Hot Spots“, in denen die Gehalte der Schimmelpilzgifte (Mykotoxine) weit über den vorgegebenen Grenzwerten liegen können. Wegen der ungleichen Verteilung der Toxine stellen Probenahme und die invasive, zeitaufwändige Analyse der Mykotoxine eine Herausforderung dar. Daher werden schnellere und einfachere Methoden benötigt, die sowohl die Probenahme als auch die Analyse beinhalten. Ein möglicher Ansatz ist die nicht-invasive Untersuchung der homogenen Gasphase über der Getreideprobe. Allerdings setzt diese Vorgehensweise die Anwesenheit von MVOC´s (microbial volatile organic compounds) voraus. Vorangegangene Studien zeigten, dass Trichodien ein Vorläufermolekül der Trichothecene – einer Mykotoxingruppe mit über 180 Substanzen – ist. Aufgrund seiner simplen sesquiterpenoiden Struktur war es bereits möglich, Trichodien mit Hilfe einer Headspace GC-MS Methode zu quantifizieren. Daher könnte es als Trichothecen-Markermolekül Anwendung finden. Allerdings bedarf dieser Sachverhalt weiterführender Untersuchungen. Der Zusammenhang zwischen der Trichodienkonzentration in der Gasphase und dem Mykotoxingehalt in der Probe muss beleuchtet werden, um Aussagen über den Trichothecengehalt in der Probe treffen zu können. Durch die Umsetzung dieser Überlegungen könnte der Nutzen von Trichodien erweitert und die Quantifizierung der Trichothecene stark vereinfacht werden. Daher beinhaltet der erste Schritt dieser laufenden Studie die Etablierung einer Referenzmethode unter Nutzung von Gaschromatographie gekoppelt mit Massenspektrometrie zur Messung von Trichodien als volatilen Mykotoxin-Marker in Getreide. Statische Headspace und SPME (solid phase micorextraction) wurden hierfür genutzt. In einem nächsten Schritt soll diese Referenzmethode zur Validierung einer schnellen vor-Ort Methode zur Bestimmung von Trichodien in Getreide dienen. T2 - 47. Lebensmittelchemikertag CY - Berlin, Germany DA - 17.09.2018 KW - Trichodien KW - Mykotoxin-Biomarker KW - Gaschromatographie-Massenspektrometrie PY - 2018 AN - OPUS4-46018 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brehm, Robert T1 - Design of highly fluorescent targeted probes: Influence of dye hydrophilicity on fluorescence quantum yields and binding to plasma proteins T2 - 11th International Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes (MAF) CY - Budapest, Hungary DA - 2009-09-06 PY - 2009 AN - OPUS4-20425 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuhne, Maren T1 - Specific labelling and FACS of murine hybridoma cells during clone selection for mab production T2 - Proteomic Forum Berlin 2013 CY - Berlin, Germany DA - 2013-03-18 PY - 2013 AN - OPUS4-28462 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Influence of biological systems on the intensity of the light emission of fluorophores T2 - Molekulare Bildgebung CY - Kiel, Germany DA - 2007-07-05 PY - 2007 AN - OPUS4-16404 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Die Bestimmung von Phomopsin A in Leguminosen mittels Stabilisotopenverdünnungsanalyse T2 - 44. Deutscher Lebensmittelchemikertag CY - Karlsruhe DA - 2015-09-14 PY - 2015 AN - OPUS4-34673 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Fluorescence Spectroscopic and Microscopic Studies on Plasmachemically Modified Polymer Films with Fluorophore-labeled Surface Functionalities T2 - MAF 9, 9th International Conference on Methods and Applications of Fluorescence CY - Lisbon, Portugal DA - 2005-09-04 PY - 2005 AN - OPUS4-7391 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kraft, Marco T1 - Absolute photoluminescence quantum yields and Lifetimes of in Toluene Dispersed Hexagonal ß-NaYF4: x % Tm3+, 20 % Yb3+ Upconversion Nanoparticles T2 - DPG Frühjahrstagung 2015 CY - Berlin, Germany DA - 2015-03-15 PY - 2015 AN - OPUS4-33766 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pauli, Jutta T1 - Spectroscopic properties of new near infrared dyes for molecular imaging T2 - Molekulare Bildgebung CY - Kiel, Germany DA - 2007-07-05 PY - 2007 AN - OPUS4-16405 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kotthoff, Lisa T1 - Untersuchung von Biotransformationsprozessen von Ionophoren Antbiotika mittels online-Kopplung Elektrochemie LC-MS N2 - Ionophore Antibiotika werden zum Schutz gegen Kokzidiose eingesetzt, hauptsächlich in der Geflügelmast. Rückstände dieser Substanzen und deren Transformationsprodukte (TP) gelangen über den Metabolismus zum einen in das Geflügelfleisch, aber auch durch Ausscheidung in die Umwelt, da Tiermist als Dünger verwendet wird. Ziel dieser Forschungsarbeit ist es, die TP-Bildung von vier verschiedenen Ionophoren Antibiotika (Monensin (MON), Salinomycin (SAL), Maduramicin (MAD) und Lasalocid (LAS)) zu untersuchen. TPs werden durch den Biotransformationsprozess (Metabolismus) gebildet, dieser Prozess kann in zwei Phasen eingeteilt werden. Während in Phase I Oxidations-, Reduktions- oder Hydrolysereaktionen auftreten, ist Phase II von Konjugationsreaktionen geprägt. Durch diesen Prozess werden die Substanzen besser ausscheidbar. Natürliche Redox-Vorgänge, wie sie bei der Biotransformation (Phase I) auftreten, können mit elektrochemischen (EC) Systemen simuliert werden. In einer EC-Durchflusszelle findet die Reaktion abhängig vom angelegten Potential statt. Im positiven Potentialbereich (0.0 bis 3.0 V; vs. Pd/H2) werden die Analyten oxidiert und somit oxidative TPs generiert. Durch die online-Kopplung mit Flüssigkeitschromatografie (LC) und Massenspektrometrie (MS) wird zunächst eine säulenchromatografische Trennung der generierten TPs erhalten, gefolgt von der massenspektrometischen Detektion. Durch die online-Kopplung von EC-(LC)-MS ergibt sich eine schnelle Analysemöglichkeit von der TP-Erzeugung ausgewählter Substanzen bis hin zur Detektion, wodurch gleichzeitig eine Identifizierung möglich ist. Die ausgewählten Ionophoren Antibiotika wurden mittels EC-(LC)-MS auf auftretende TPs untersucht. Die ersten Ergebnisse zeigen ein breites Spektrum unterschiedlicher TPs abhängig von gewählten EC-Parametern wie Lösemittel, Modifier und insbesondere vom Arbeitselektrodenmaterial der EC-Durchflusszelle. Unter den erhaltenen TPs sind sowohl bekannte als auch unbekannte TPs vertreten, so dass weitere Untersuchungen zur Strukturaufklärung und vergleichende Tests zu Phase I Metaboliten (z.B. durch Metabolismus-Studien mit Mikrosomen) geplant sind. T2 - 47. Deutscher Lebensmittelchemikertag CY - Berlin, Germany DA - 17.09.2018 KW - Transformationsprodukte KW - Elektrochemie KW - Ionophore Antibiotika PY - 2018 AN - OPUS4-46007 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nirmalananthan-Budau, Nithiya T1 - New pyrrolidinylvinylquinoxaline derivatives with aggregation-induced emission as possible fluorescent nanoreporters N2 - Background: Fluorescent amplification strategies with nanomaterials are of increasing importance for a wide range of applications in material and life sciences. This includes their use as reporters for optical assays, targeted probes in bioimaging studies and as sensor materials. Some organic dyes with twisted skeleton conformation show enhanced emission upon aggregation (AIE)in contrast to the majority of dyes which reveal aggregation-caused fluorescence quenching (ACQ). Such dyes could be candidates for amplification strategies. Here we present a series of new hydrophobic pyrrolidinylvinylquinoxaline (PVQ) dyes with different substituents, which are supposed to show AIE. This group of twisted skeleton conformed dyes are emissive in the solid state, as aggregates, and encapsulated in hydrophobic polymer materials. Results: The PVQ derivatives show strong AIE in ethanol-water-mixtures containing more than 80% water as indicated by the strong increase in fluorescence quantum yields and lifetimes upon dye aggregation and nanoparticle formation. The size of the AIE effect and the observed fluorescence enhancement are in good agreement with DFT- and XRD calculations of the torsion angle between the four different substituents and the planar backbone of the dye. In all cases, particles with diameters smaller than 450 nm were formed. The hydrodynamic diameter of the aggregates was controlled by the water content, with an increasing water content causing a decrease of the hydrodynamic diameter. In the presence of polyelectrolytes or surfactants, μm-sized crystals were obtained. Encapsulation of the dyes in preformed polymer particles provides stabil and strongly emissive nanoparticles. Conclusion: Based on new PVQ, we yielded highly emissive nanoparticles. The correlation between the torsion angle and the AIE effect underlines structural control of AIE by substitution pattern in this dye class. The loading of a polymer matrix with PVQ resulted in stable nanoparticles with varied surface modification. Applications of these effects in fluorescence assays are currently studied. T2 - Innovation Forum Senftenberg 2016 CY - Senftenberg, Germany DA - 01.06.2016 KW - Aggregation-induced emission KW - Fluorescent nanoreporters KW - Fluorescent amplification strategies PY - 2016 N1 - Geburtsname von Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. - Birth name of Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. AN - OPUS4-38287 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Mono- and diecetoxyscirpenol - Determination in cereals and cereal-based foods T2 - 7th International Symposium on Recent Advances in Food and Feed (RAFA 2015) CY - Prague (Czech Republikc) DA - 2015-11-03 PY - 2015 AN - OPUS4-34743 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Simple and Validated Methods for Quantifying Functional Groups, Ligands, and Biomolecules on Nanomaterials N2 - Many applications of nanomaterials in the life sciences require the controlled functionalization of these materials with ligands like polyethylene glycol (PEG) and/or biomolecules such as peptides, proteins, and DNA. This enables to tune their hydrophilicity and biocompatibility, minimize unspecific interactions, improve biofunctionalization efficiencies, and enhance blood circulation times. Moreover, it is the ultimate prerequisite for their use as reporters in assays or the design of targeted optial probes for bioimaging. At the core of these functionalization strategies are reliable and validated methods for surface group and ligand quantification that can be preferably performed with routine laboratory instrumentation, require only small amounts of substances, and are suitable for many different types of nanomaterials. We present here versatile and simple concepts for the quantification of common functional groups, ligands, and biomolecules on different types of organic and inorganic nano-materials, using different types of optical reporters and method validation with the aid of multimodal reporters, method comparisons, and mass balances. T2 - NanoWorkshop 2018 CY - Berlin, Germany DA - 14.05.2018 KW - Surface functionalization KW - Nanoparticles KW - Surface chemistry KW - Multimodal reporters PY - 2018 N1 - Geburtsname von Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. - Birth name of Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. AN - OPUS4-45179 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Standardization of fluorescence-based measurements: simple and method-adaptable fluorescence standards T2 - BERM12 CY - Oxford, England DA - 2009-07-07 PY - 2009 AN - OPUS4-20428 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Development of certified reference material and analytical method for zearalenone in edible oil N2 - Quality and safety of food products require their reliable analysis. Contaminants, in particular mycotoxins, are key-components for food safety. About 25 % of the world's food crops are contaminated with mycotoxins posing a severe health risk to humans. In order to strengthen food safety and consumer protection the European Commission (EC) set maximum levels for priority mycotoxins in certain foods for human consumption. In 2013, the EC and CEN (European Committee for Standardization) started an initiative to standardize analytical methods for mycotoxins in food which gained increasing relevance, e.g. zearalenone (ZEN). ZEN, an estrogenic mycotoxin produced by several Fusarium species, contaminates cereal crops worldwide. Due to its lipophilic nature ZEN is often found in edible oils (particularly in maize germ oils) derived from contaminated plants. Therefore, an European maximum level of 400 µg/kg is currently in force. To perform reliable food analysis a sustainable metrological infrastructure is of major importance enabling the quantification of priority mycotoxins (here: ZEN). To achieve this goal, an integrated approach is needed targeted at the development of validated analytical methods and certified reference materials (CRM). A highly selective method for ZEN in edible oils will be presented, based on solid phase extraction (SPE) using hydrazine-functionalized particles. This method was developed for manual application using commercial SPE cartridges as well as for automated SPE-HPLC online coupling. While ZEN is covalently coupled to the solid phase by means of a hydrazone bond, undesired matrix components can be removed very efficiently. Finally, ZEN is decoupled from the solid phase, leading to highly purified extracts which are measured by HPLC-FLD. The development of the first European Reference Material (ERM®) for ZEN in maize germ oil (ERM®-BC715) will be presented and discussed. This ERM®-project underpins the urgent need for mycotoxin-CRMs to support food safety and public health. T2 - 40. Generalversammlung ISO/REMCO CY - Berlin, Germany DA - 27.06.2017 KW - Certified reference materials KW - Mycotoxin KW - Food PY - 2017 AN - OPUS4-40902 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Matiushkina, Anna T1 - Quantification of Citrate Ligands on the Surface of Nanoparticles N2 - In this study, different methods for determining nanoparticle surface ligands including thermogravimetric analysis (TGA) are explored to quantify citrate as one of the most popular hydrophilic ligands on the surface of nanoparticles such as iron oxide nanoparticles (IONPs). The purpose of work is to understand which analytical methods are best suited for surface chemistry analysis of citrate stabilized IONPs and to validate these methods. T2 - SALSA Make and Measure 2024: Interfaces CY - Berlin, Germany DA - 11.09.2024 KW - Nano KW - Particle KW - Iron oxide KW - Ligand KW - Quantification KW - Advanced material KW - Surface analysis KW - Functional group PY - 2024 AN - OPUS4-62298 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Zearalenone in edible oil - a method comparison study T2 - 33. Mykotoxin-Workshop der Gesellschaft für Mykotoxinforschung e. V. CY - Freising, Germany DA - 2011-05-30 PY - 2011 N1 - Geburtsname von Sauer, Andreas: Buchholz, A. - Birth name of Sauer, Andreas: Buchholz, A. AN - OPUS4-23506 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Muhr, Verena T1 - Lifetime-based FRET Sensing Using Upconverting Nanoparticles T2 - 11th Internatinal Biosensor Conference BBMEC CY - Regensburg DA - 2015-09-28 PY - 2015 AN - OPUS4-34488 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Keller, Julia T1 - Interactions of food relevant mycotoxins with metal cations T2 - 44. Deutscher Lebensmnittelchemikertag CY - Karlsruhe DA - 2015-09-14 PY - 2015 AN - OPUS4-34216 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - El Abbassi, Abdelouahad T1 - Multifaceted Nanoparticles: Labeling, Heterostructures, and Aggregation-induced Dual-emission Systems for Advanced Applications N2 - Nanoparticles with novel physico-chemical properties have an impact on various scientific disciplines, including medical diagnostics, energy conversion, catalysis, and solid-state lighting. Here, I present examples from my previous work on organic and inorganic nanoscale systems, such as superparamagnetic iron oxide nanoparticles (SPIONs) for blood platelet labeling and magnetic copper-doped bioactive glasses for bone cancer therapy. Additionally, I provide a first insight into my recently started Ph.D. project focusing on bichromophoric organic fluorophores exhibiting Aggregation-Induced Dual-Emission (AIDE) and their integration into nanostructures for water-dispersible nanoscale reporters and nanosensors. T2 - Bad-Honnef Summer School Exciting Nanostructures 2023 CY - Bad Honnef, Germany DA - 30.07.2023 KW - Nanoparticles KW - AIE KW - SPIONS PY - 2023 AN - OPUS4-58204 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Russo, Francesco F. T1 - Gas chromatograph low energy-electron ionisation mass spectrometry (GC-LE-EI-MS) in non targeted analysis N2 - Non targeted screenings (NTS) are an important tool for forensic, health, and environmental sciences. Mass spectrometry (MS) based NTS methods are characterised by high throughput and high sensitivity. Gas chromatography electron ionisation mass spectrometry (GC EI-MS) methods show high reproducibility of fragmentation patterns, good separation, and vast spectral libraries. Nevertheless, the high energy imparted to molecules by standard 70eV EI sources results in a high degree of fragmentation with a possible loss of the molecular ion signal. The loss of molecular ion signal makes the identification of compounds absent from spectral libraries more difficult by precluding a straightforward molecular formula assignment. Furthermore, the high degree of fragmentation, and the resulting depletion of high m/z signals, results in a reduced discriminatory power. The disadvantages of EI MS are approached by soft ionisation techniques, e.g. electrospray ionisation (ESI). More recently, low energy (LE) EI-MS has awakened interest as a softer version of EI, which still keeps high similarity with the standard 70 eV EI and the good chromatographic properties of GC, while reducing the depletion of higher m/z ion signals and of molecular ions. LE-EI-MS has shown promise in fluxomics[1], doping analytics[2, 3], metabolomics[4], fingerprinting of foods[5, 6], and the identification of isomers in motor oil mixtures[7]. Our objective is the comparison of LE-EI-MS to alternative soft ionisation methods, e.g. APCI-MS, and the development of a non-targeted LE-EI-MS workflow, including a highly automated data processing and annotation pipeline. In a first phase 13 compound libraries (705 compounds) will be measured at 14, 18, and 70 eV. Molecular ion abundance and similarity to standard 70 eV spectra are going to be evaluated. Furthermore, common neutral losses and fragments will be identified and included into an annotation tool. If the tool shows satisfying performance, it will be published (either as a standalone package or as an expansion to the InterpretMSSpectrum[8, 9] R package). T2 - International Symposium on Chromatography (ISC) 2024 CY - Liverpool, UK DA - 06.10.2024 KW - MS KW - Low Energy Electron Ionisation Mass Spectrometry (LE-EI-MS) KW - Mass Spectrometry (MS) KW - Gas Chromatography Mass Spectrometry (GC-MS) KW - Gas Chromatography (GC) PY - 2024 AN - OPUS4-61349 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Siegel, David T1 - Quantification of the Alternaria mycotoxin tenuazonic acid by HPLC-IT-MS2 after derivatization with 2,4-dinitrophenylhydrazine T2 - International Symposium on Chromatography CY - Münster, Germany DA - 2008-09-21 PY - 2008 AN - OPUS4-17792 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kaiser, Martin T1 - Luminescence Properties of Upconverting NaYF4(Yb,Er) Nanoparticles in water and heavy water T2 - 13th Conference on Methods and Applications of Fluorescence (MAF 13) CY - Genoa, Italy DA - 2013-09-08 PY - 2013 AN - OPUS4-29635 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Targeted Luminescent NIR Nanoprobes for In Vivo Imaging of Tumor Hypoxia T2 - 12th Conference on Methods and Applications of Fluorescence: Spectroscopy; Imaging and Probes (MAF-12) CY - Strasbourg, France DA - 2011-09-11 PY - 2011 AN - OPUS4-24523 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute A1 - Pauli, J. A1 - Güttler, Arne A1 - Richter, Maria A1 - Fiedler, Saskia A1 - Frenzel, Florian A1 - Wegner, Karl David A1 - Würth, Christian T1 - Photoluminescence Quantum Yields of Luminescent Nanocrystals and Particles in the UV/vis/NIR/SWIR N2 - The rational design of functional luminescent materials such as semiconductor quantum dots and lanthanide-based upconversion nanoparticles, all photophysical and mechanistic studies, and the comparison of different emitters require accurate and quantitative photoluminescence measurements. Particularly the reliable determination of the key performance parameter photoluminescence quantum yield (f), the number of emitted per absorbed photons, and the brightness are of special importance for luminescence applications in the life and material sciences and nano(bio)photonics.[1] In this context, examples for absolute measurements of the photoluminescence quantum yields of UV/vis/NIR/SWIR emissive semiconductor quantum dots and rods, made from different materials, and spectrally shifting lanthanide upconversion nanocrystals with different surface chemistries in transparent matrices are presented including excitation wavelength and power density dependent studies utilizing integration sphere spectroscopy.[2,3] In addition, procedures for the absolute determination of the photoluminescence quantum yields of scattering dispersions of larger size quantum rods and differently sized inorganic particles have been developed as well as procedures for the characterization of solid luminescent nanomaterials such as different perovskites and YAG:Cer converter materials.[4] Thereby, challenges and pitfalls of f measurements in different wavelength regions including the SWIR and material-specific effects related to certain emitter classes are addressed, achievable uncertainties are quantified, and relative and absolute measurements of photoluminescence quantum yield measurements are compared to underline limitations of the former approach. Finally, a set of novel UV/vis/NIR quantum yield standards is presented including their certification with a complete uncertainty budget.[5] T2 - NANAX 10 CY - Klosterneuburg, Austria DA - 03.07.2023 KW - Fluorescence KW - Optical spectroscopy KW - Reference data KW - Traceability KW - NIR KW - Scattering KW - Reference material KW - Certification KW - Quality assurance KW - Dye KW - Reference product KW - SWIR KW - Nano KW - Particle KW - Perovskite KW - Integrating sphere spectroscopy KW - Quantum yield PY - 2023 AN - OPUS4-58238 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Tschiche, Harald T1 - A Polymeric Nanosensor for Sensing of Broad pH Changes in Biofilm as Tool for the Investigation of Microbial Induced Corrosion N2 - One of today’s major problems in many technical plants as well as fuel tanks is Microbial induced corrosion (MIC), leading to considerable damage and huge financial losses. Successful prevention of MIC requires the localization of first signs of corrosion as well as the identification of factors influencing the corrosion process. Hence, there is a growing need for sensitive and preferably inexpensive tools that enable the early detection of MIC. Of utmost importance are methods, which provide spatially and time-resolved information and allow the determination of corrosion rates at sites of interest for possible prevention of MIC. T2 - First European / 10th German BioSensor Symposium CY - Potsdam, Germany DA - 20.03.2017 KW - Nanoparticel based pH-probes KW - Microbial induced corrosion KW - Imaging PY - 2017 AN - OPUS4-40261 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Scholtz, Lena T1 - Luminescent Polymer Microbeads – Synthesis & Applications N2 - Differently sized, luminescent polymer beads encoded with QDs were prepared with a simple, optimized polymerization procedure. The optical properties of the resulting particles were studied to ensure sufficient fluorescence. In addition, possible future applications were identified. T2 - Future WiNS: New Energies for a Sustainable World CY - Berlin, Germany DA - 07.12.2022 KW - Polymerization KW - Quantum dots KW - Fluorescence KW - Luminescence PY - 2022 AN - OPUS4-56560 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Köppen, Robert T1 - Entwicklung und Validierung einer Methode zur exakten Bestimmung von gesetzlich geregelten Mykotoxinen mittels Isotopenverdünnung-Massenspektrometrie - Erste Ergebnisse - T2 - 12. MOLD-Meeting CY - Linz, Austria DA - 2008-12-04 PY - 2008 AN - OPUS4-18542 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Paul, Andrea T1 - Multivariate Datenanalyse von UV/VIS-Spektren zur Bestimmung der Photoisomere von Tearalenon T2 - 8. Kolloquium Prozessanalytik, BAM CY - Berlin, Germany DA - 2012-12-03 PY - 2012 AN - OPUS4-28096 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schloß, Svenja T1 - Sensitive und selektive Untersuchung des Leguminosenmykotoxins Phomopsin A - eine "worst case"-Betrachtung N2 - Leguminosen wie z.B. Bohnen, Erbsen, Soja und zunehmend auch die Samen der Süßlupine liefern aufgrund ihres hohen Proteingehaltes einen wertvollen Beitrag zu einer veganen oder vegetarischen Ernährung. Jedoch sind Lupinen anfällig für Infektionen mit dem Pilz Diaporthe toxica, der u.a. Phomopsin A als hepatotoxischen Sekundärmetaboliten bildet. Ziel der Arbeiten waren die Gewinnung und Anwendung eines 15N-isotopenmarkierten internen Standards für die HPLC-MS/MS-Analyse dieses Toxins sowie die Quantifizierung der Toxinbildung in einem „worst case“-Szenario. T2 - 53. Wissenschaftlicher Kongress der Deutschen Gesellschaft für Ernährung e.V. CY - Fulda, Germany DA - 02.03.2016 KW - Phomopsin A KW - Leguminosen KW - Stabilisotopenverdünnungsanalyse KW - HPLC-MS/MS KW - Toxinbelastung PY - 2016 AN - OPUS4-37060 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dhamo, Lorena T1 - Syntheses and characterization of 2-4nm AgInS2/ZnS quantum dots N2 - Ternary semiconductors Quantum Dots (t-QDs) like AgInS (AIS) QDs are interesting alternatives to Cd-based QDs for applications as optical active materials in light-emitting diodes (LEDs), solar concentrators and solar cells as well as as biodiagnostic tools, respectively. AIS QDs exhibit broad photoluminescence (PL) spectra in the visible and near infrared, which are tunable by size and chemical composition (ratio of components or doping). In order to enhance the PL quantum yield (PL QY or Fpl) and prevent material deterioration and oxidation, these QDs are covered by ZnS shell. Here we show a spectroscopic study of differently colored AIS QDs synthesized in water, evaluating their PL properties, their PL QY and their PL decay. The simple aqueous synthesis that avoids further ligand exchange steps for bioanalytical applications, the tunable emission color, the high PL QY, the high absorption coefficients and the long lifetime make these t-QDs promising Cd-free materials as biodiagnostic tools or optical active materials. T2 - Summer School "EXCITING NANOSTRUCTURES" CY - Bad Honnef, Germany DA - 17.07.2017 KW - Semiconductor KW - Nanoparticle KW - Quantum dot KW - Flourescence KW - Synthesis KW - Spectral multiplexing KW - Ternary quantum dot PY - 2017 AN - OPUS4-41173 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mönch, Bettina T1 - Molekular geprägte Polymere (MIPs) - ein neuer Ansatz in der Ergotalkaloid-Analytik - T2 - ANAKON 2015 CY - Graz (Österreich) DA - 2015-03-23 PY - 2015 AN - OPUS4-32815 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Siegel, David T1 - Bestimmung von Alternaria-Mykotoxinen in Getreide und Bier T2 - ANAKON 2009 CY - Berlin, Germany DA - 2009-03-17 PY - 2009 AN - OPUS4-20113 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Grandke, Julia T1 - Development of different immunoassay formats and measurement uncertainty T2 - Tag der Chemie CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21551 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Harald T1 - Polymeric sensors as imaging tools for local pH in biofilm for early detection of microbial induced corrosion N2 - Microbial induced corrosion (MIC) is a crucial problem in many technical plants as well as fuel tanks, leading to considerable damage and huge financial losses. Successful prevention of MIC requires the localization of first signs of corrosion as well as the identification of factors influencing the corrosion process.1 Hence, there is a growing need for sensitive and preferably inexpensive tools that enable the early detection of MIC. Of high importance are methods, which provide spatially and time-resolved information and allow the study of changes on metal surfaces as prerequisites for a more detailed analysis of ongoing corrosion processes at a MIC-affected site.2 In this respect, also the determination of corrosion rates can be of interest for the possible prevention of MIC. T2 - 11th International Symposium on Polymer Therapeutics CY - Valencia, Spain DA - 23.05.2016 KW - Bildgebung KW - Mikrobiell induzierte Korrosion KW - Nanosensor KW - Imaging KW - Microbial induced corrosion PY - 2016 AN - OPUS4-37139 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nording, P. T1 - Traceable characterization of fluorescence measuring systems with spectral fluorescence standards T2 - 8th Conference on Methods and Applications of Fluorescence: Spectroscopy, Imaging and Probes CY - Prague, Czech Republic DA - 2003-08-24 PY - 2003 AN - OPUS4-7233 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hennig, Andreas T1 - A FRET-Based Method to probe biomembrane interactions of multimodal contrast Agents T2 - International Bunsen Discussion meeting on Förster Resonance Energy Transfer in the Life Sciences CY - Göttingen, Germany DA - 2011-03-27 PY - 2011 AN - OPUS4-23530 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Lifetime imaging and lifetime quality analysis in combination with pH-sensitive NIR fluorescence probes to improve tumor detection in vivo T2 - ESME 2011 CY - Leiden, Netherlands DA - 2011-06-01 PY - 2011 AN - OPUS4-23939 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Linck, Lena T1 - Optimization of fluorescence signals on rolling amplification-enhanced microarrays T2 - Dechema Tagung functional genomics CY - Frankfurt am Main, Germany DA - 2011-02-03 PY - 2011 AN - OPUS4-23536 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Nanoparticle-based ratiometric approach for oxygen sensing in tumors T2 - ESME CY - Leiden, Netherlands DA - 2011-06-01 PY - 2011 AN - OPUS4-23940 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - [RES]Check: Dezentrales Diagnostiksystem zur schnellen Erfassung viraler oder bakterieller Erreger respiratorischer Erkrankungen T2 - MEDICA CY - Düsseldorf, Germany DA - 2011-11-16 PY - 2011 AN - OPUS4-25119 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - New flourescence standards for the NIR T2 - MAF 12 CY - Strasbourg, France DA - 2011-09-11 PY - 2011 AN - OPUS4-24800 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Neuartige Lanthanoid-Hybridnanopartikel als optische Hochleistungsmarker T2 - DFG-Schwerpunkt SPP 1166 "Lanthanoidspezifische Funktionalitäten in Molekül und Material" CY - Bonn, Germany DA - 2005-11-28 PY - 2005 AN - OPUS4-11908 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pötz, Stefanie T1 - Mineralölkohlenwasserstoffe im Boden: Quantifizierung von prüfwertrelevanten Fraktionsparametern für den Wirkungspfad Boden-Mensch T2 - Evaluierung der BAM durch den Wissenschaftsrat CY - Berlin, Germany DA - 2006-01-17 PY - 2006 AN - OPUS4-11705 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Homogeneous Duplex TR-FRET Assay using Quantum dots and Ruthenium chelates as fret donors T2 - XIII International Symposium on Luminescence Spectrometry CY - Bologna, Italy DA - 2008-09-07 PY - 2008 AN - OPUS4-18060 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jäger, Christian T1 - Comparison of 19F qNMR, absolute fluorescence, and absorption measurement of dye concentrations in fluorescent PS particles T2 - 53rd Experimental Nuclear Magnetic Resonance Conference CY - Miami, FL, USA DA - 2012-04-15 PY - 2012 AN - OPUS4-25718 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kaiser, Martin T1 - Inflluence of the Particle Size on the Optical Properties of YAG:Ce T2 - Photochemie Tagung CY - Potsdam, Germany DA - 2012-10-08 PY - 2012 AN - OPUS4-27077 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kaiser, Martin T1 - Inflluence of the Particle Size on the Optical Properties of YAG:Ce T2 - Fachtagung Nano-Additive CY - Berlin, Germany DA - 2012-11-19 PY - 2012 AN - OPUS4-27078 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kittler, Katrin T1 - Uptake of the Cyanotoxin Cylindrospermopsin by Brassica Species T2 - WMF meets IUPAC CY - Rotterdam, Netherlands DA - 2012-11-05 PY - 2012 AN - OPUS4-27037 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riedel, Juliane T1 - cis-trans isomerism of zearalenone T2 - 34. Mycotoxin-Workshop CY - Braunschweig, Germany DA - 2012-05-14 PY - 2012 AN - OPUS4-25889 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nirmalananthan-Budau, Nithiya T1 - A Series of New Pyrrolidinylvinylquinoxaline Derivatives as possible fluorescent nanoreporters with Aggregation-Induced Emission (AIE) T2 - Potsdam Days Bioanalysis 2015 CY - Potsdam, Brandenburg DA - 2015-11-04 PY - 2015 N1 - Geburtsname von Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. - Birth name of Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. AN - OPUS4-34902 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kaiser, Martin T1 - Influence of Surface Modification on the Luminescence and Colloidal Stability of Water Dispersible Upconverting Nanoparticles T2 - Anakon 2015 CY - Anakon 2015 DA - 2015-03-23 PY - 2015 AN - OPUS4-33656 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Geißler, Daniel T1 - Quantification of the total number and accessible number of functional groups on nanoparticle surfaces T2 - Workshop: Nanoparticle cencentratin, chemistry and interfaces CY - Peckforton Castle, Cheshire, UK DA - 2015-04-20 PY - 2015 AN - OPUS4-33694 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Ralf T1 - Flourophore labeled silver nanoparticles as plasmonic-based reporters T2 - 14th Conference on methods and applications of flourescence CY - Würzburg DA - 2015-09-13 PY - 2015 N1 - Geburtsname von Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. - Birth name of Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. AN - OPUS4-34459 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - Development of Certified Reference Materials for the determination of mineral oil hydrocarbons in water, soil and waste T2 - BERM 9 - 9th International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 2003-06-15 PY - 2003 AN - OPUS4-4788 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gärtner, Sonja T1 - Phthalate in Säuglingsnahrung: Analytik und Migration T2 - 38. Deutscher Lebensmittelchemikertag CY - Berlin, Germany DA - 2009-09-14 PY - 2009 AN - OPUS4-19776 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merkel, Stefan T1 - Ergotalkaloide: Vorkommen und Nachweis in Lebensmitteln T2 - Tag der Chemie 2010, FU Berlin CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21419 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Quality Assurance in Fluorometry: BAM Kit Spectral Emission Standards as a an Easy-to-Use Tool to Assure the Comparability of Fluorescence Data T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-7449 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kraft, Marco T1 - Absolute Photoluminescence Quantum Yields of with Oleic Acid Stabalized Hexagonal ?-NaYF4: x % Tm3+, 20 % Yb3+ Upconversion Nanoparticles T2 - Adlershofer Forschungsforum CY - Berlin, Germany DA - 2014-11-11 PY - 2014 AN - OPUS4-33658 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Approaches to the Determination of the Spectral Characteristics of Confocal Spectral Imaging Systems and Comparability of Data T2 - ANAKON 2005 CY - Regensburg, Germany DA - 2005-03-15 PY - 2005 AN - OPUS4-7450 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Emission Standards for the Simple and Traceable Characterization of Fluorescence Measuring Systems T2 - PITTCON 2005 CY - Orlando, FL, USA DA - 2005-02-27 PY - 2005 AN - OPUS4-7051 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Kompetenzen & potenzielle Beiträge - Poster zur Auftaktveranstaltung der "Leitinitiative NanoforLife" des VDI/BMBF T2 - Auftaktveranstaltung zur Leitinnovation "NanoforLife" CY - Düsseldorf, Germany DA - 2005-01-26 PY - 2005 AN - OPUS4-7235 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kaiser, Martin T1 - Integration Sphere Setup for the Absolute Determination of Upconversion Quantum Yields of Rare Earth Doped Nanoparticles T2 - iNOW2013 International Nano Optoelectronics Workshop CY - Cargese, France DA - 2013-08-20 PY - 2013 AN - OPUS4-29748 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Quevedo, Pablo T1 - Protein-conjugated fluorophore-loaded nanocarriers as reporter in fluorescence assays T2 - Deutsche Biosensor Symposium 2015 CY - München, Germany DA - 2015-03-11 PY - 2015 AN - OPUS4-33650 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brunner, Claudia T1 - Validation Concepts for Microarray-based Platforms using a sophisticated Calibration Tool T2 - Deutsche Biosensor Symposium 2015 CY - München, Germany DA - 2015-03-11 PY - 2015 AN - OPUS4-33649 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Brunner, Claudia T1 - Novel calibration Tool for Microarray-based Platforms Used in Molecular Diagnostics and Food Safety Control T2 - Anakon 2015 CY - Graz, Austria DA - 2015-03-23 PY - 2015 AN - OPUS4-33653 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Frenzel, Florian T1 - Power dependent optical properties of hexagonal β-NaYF4: x % Er3+, 20 % Yb3+ core/ core-shell upconversion nanoparticles in cyclohexane and water N2 - Lanthanide doped photon upconverting nanophosphors (UCNPs) have the unique capability to produce narrow band, multi-color emission in the UV/vis/NIR upon multiphotonic absorption of infrared light, which makes them promising reporters for diagnostic, bioanalytical, and biological applications. This minimizes background signals, which normally occur due to autofluorescence from auxochromes, in biological matrices and enables deep penetration depths in biological applications. Moreover, UCNPs show long luminescence lifetimes in the μs range favorable for time gated emission in conjunction with a high photostability and chemical inertness and they do not blink. One of the most efficient upconversion (UC) phosphors for conversion of 976 nm to 655 nm and 545 nm light presents the hexagonal NaYF4-host crystal doped with 20 % Yb3+ used as sensitizer to absorb infrared light and 2 % Er3+ acting as activator mainly responsible for light emission. The high transparency in the relevant spectral windows of this host together with its low phonon frequencies ensure relatively high luminescence efficiencies. Although UCNPs are ideal candidates for many chemical and biological sensing and imaging applications, compared to other well-known chromophores like organic dyes or QDs, they suffer from a comparatively low brightness due to the low absorption cross sections of the parity forbidden f-f-transitions and low photoluminescence quantum yields (QYUC) particularly in the case of small nanoparticles with sizes of < 50 nm. The rational design of more efficient UCNPs requires an improved understanding of the nonradiative decay pathways in these materials that are influenced by particle architecture including dopant ion concentration and homogeneity of dopant distribution within UCNPs, size/surface-to-volume ratio, surface chemistry, and microenvironment. A promising approach to overcome the low efficiency of UCNPs is to use plasmonic interactions between a noble metal (Ag or Au) structure in the proximity of UCNPs and the incident light. This interaction leads to a modification of the spectroscopic properties due to local field enhancements and can involve an increase of the photoluminescence. In this respect, we study the interactions of UCNPs with metal structures (clusters and shells) by varying shape and size. Here, first results derived from integrating sphere spectroscopy and time-resolved fluorescence measurements are presented. T2 - Summer School "EXCITING NANOSTRUCTURES" CY - Bad Honnef, Germany DA - 17.07.2017 KW - Upconversion KW - Nanoparticle KW - Flourescence KW - Core-shell architecture KW - NIR KW - Absolute flourometry KW - Integrating sphere spectroscopy KW - Er(III) KW - Yb(III) KW - Single particle spectroscopy PY - 2017 AN - OPUS4-41172 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Lück, Detlef T1 - Evaluierung von Verfahren für die Untersuchungen von Böden nach § 8 Bundes-Bodenschutzgesetz (BbodSchG) T2 - Analytica Conference 2000 CY - Munich, Germany DA - 2000-04-11 PY - 2000 AN - OPUS4-5738 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Win, Tin T1 - Evaluation and development of methods for the analysis of soils according to § 8 of the German Federal Soil Protection Act T2 - ConSoil 2000 CY - Leipzig, Germany DA - 2000-09-18 PY - 2000 AN - OPUS4-5739 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kittler, Katrin T1 - Investigation of the systematic availability of the cyanotoxin Cylindrospermopsin in Brassicaceae T2 - Euro Food Chem XVI CY - Gdansk, Poland DA - 2011-07-06 PY - 2011 AN - OPUS4-23942 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Glanz, Mario T1 - Polymerisation von Methacrylaten mit Trialkyllanthanoidkomplexen T2 - DFG-Berichtskolloquium, Schwerpunktprogramm 1166 CY - Bayreuth, Germany DA - 2004-12-01 PY - 2004 AN - OPUS4-5359 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Characterization of fluorescent particles, IR dyes, and fluorescence standards with integrating sphere spectroscopy T2 - 7th Senftenberger Innovationsforum Multiparameteranalytik CY - Senftenberg, Germany DA - 2013-04-18 PY - 2013 AN - OPUS4-29633 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drzymala, Sarah T1 - Online Coupling of Covalent Solid Phase Extraction to Liquid Chromatography for Automated Analysis of Zearalenone T2 - Tag der Chemie CY - Berlin, Germany DA - 2013-06-27 PY - 2013 AN - OPUS4-28750 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sloniec, Jagoda T1 - Enzyme- Activatable NIR Fluorescent Probes Quenched by Intramolecular H-Aggregate Formation T2 - International Photochemistry Conference ICP2013 CY - Leuven, Belgium DA - 2013-06-21 PY - 2013 AN - OPUS4-28957 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Marten, S. T1 - Selective online-SPEfor the determination of zearalenone (ZON) in edible oils via dynamic covalent hydrazine chemistry T2 - HPLC 2013 CY - Amsterdam, Netherlands DA - 2013-06-16 PY - 2013 AN - OPUS4-29679 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schloß, Svenja T1 - Rapid Preparation of 15N(3)-labeled Enniatins T2 - JCF-Frühjahrssymposium 2013 CY - Berlin, Germany DA - 2013-03-06 PY - 2013 AN - OPUS4-27865 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Resch-Genger, Ute T1 - Nano-Clays: More than Rheological Additives T2 - Nanoadditive Workshop CY - Berlin, Germany DA - 2012-11-19 PY - 2012 AN - OPUS4-27228 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Nirmalananthan-Budau, Nithiya T1 - Multimodal cleavable reporters for the optical quantification of functional groups on nano- and microparticles N2 - Nano- and microparticles are of increasing importance for a wide range of applications in the material and life sciences. Examples are their use as carriers for dye molecules and drugs, multichromophoric reporters for signal enhancement strategies in optical assays, targeted probes for bioimaging, and biosensors. All these applications require surface functionalization of the particles with e.g., ligands (to tune the dispersibility and prevent unspecific interactions), crosslinkers, sensor dyes, or analyte recognition moieties like biomolecules, and subsequently, the knowledge of the chemical nature and total number of surface groups as well as the number of groups accessible for coupling reactions. Particularly attractive for the latter are sensitive and fast photometric or fluorometric assays, which can be read out with simple, inexpensive instrumentation. Here, we present a novel family of cleavable photometric and multimodal reporters for the quantification of conjugatable amino and carboxyl surface groups on nano- and microparticles. These probes allow for the determination of particle-bound labels, unbound reporters in the supernatant, and reporters cleaved off from the particle surface as well as the remaining thiol groups on the particles by photometry and inductively coupled optical emission spectrometry (32S ICP-OES).3 Comparison of the performance of these cleavable reporters with conventional labels, utilizing changes in intensity and/or colour of absorption and/or emission, underlines the analytical potential of this versatile concept which elegantly circumvents signal distortions by light scattering and encoding dyes, and enables straightforward validation by method comparison. T2 - INNANOPART Open day CY - London, UK DA - 24.04.2018 KW - Nanoparticle KW - Surface groups KW - Cleavable reporter PY - 2018 N1 - Geburtsname von Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. - Birth name of Nirmalananthan-Budau, Nithiya: Nirmalananthan, N. AN - OPUS4-44828 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hinsch, Alexandra T1 - The influence of the individual Particles on the ensemble Quantum Yield of elongated CdSe/cds core/Shell nanoparticles N2 - Colloidal semiconductor nanoparticles with a spherical core and an elongated shell form bright emitters with a high absorption cross section. They show great potential for a multitude of optoelectronic applications such as LEDs or photovoltaic cells and can be used as gain material or as markers for bio imaging. For most of these applications high fluorescence quantum yields are a figure of merit for the emitter quality. In this work we investigate how the ensemble quantum yield is affected by the properties of the individual particles. In particular, we prove the role of non-emitting particles as well as the role of blinking. Using a combination of AFM and spatially resolved photoluminescence spectroscopy we measured hundreds of individual CdSe/CdS dot/rod particles of different shell lengths exciting with two different excitation wavelengths for shell or core excitation, respectively. T2 - SPIE Photonics West CY - San Francisco, CA, USA DA - 27.01.2018 KW - Exciton diffusion KW - Quantum Dot-Rod KW - Quantum Yield PY - 2018 AN - OPUS4-44759 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koshkina, Olga T1 - Fluorescent Poly(organosiloxane) Nanoparticles in Biological Environment T2 - SPP1313 Workshop 5: The Nanoparticle-Protein Corona: Characterization, impact and biological relevance CY - Mainz, Germany DA - 2011-12-08 PY - 2011 AN - OPUS4-25169 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf T1 - Flow Cytometry (FACS) for characterization and sorting of murine B cells to advance development of monoclonal antibodies T2 - Pacifichem CY - Honolulu, HI, USA DA - 2010-12-15 PY - 2010 AN - OPUS4-22858 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schneider, Rudolf T1 - Design-of-Experiment approach in optimization, validation and uncertainty assessment of hapten immunoassays T2 - Pacifichem CY - Honolulu, HI, USA DA - 2010-12-15 PY - 2010 AN - OPUS4-22859 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kuner, Maximilian T1 - Cleaving ergot alkaloids - development of a novel food screening method N2 - Mycotoxins (toxic compounds formed by fungi) in food and feed have caused problems for mankind since the beginning of time. The group of ergot alkaloids plays a special role in human history. Several tens of thousands of deaths during the middle ages caused by to ergotism (the disease caused by continuous intake of ergot alkaloid contaminated food) underscore the importance of reliable analytical methods to ensure food safety. More than 50 compounds belong to the group of ergot alkaloids. The 12 most found structures – the major ergot alkaloids – are typically measured, when it comes to ergot alkaloid quantification. High performance liquid chromatography (HPLC) with a fluorescence detector (FLD) is typically used to quantify the ergot alkaloid content. The main disadvantage of this method are the high costs for calibration standards (12 different calibration substances are required). But also, the time and effort required for the analysis of 12 peaks and overlapping signals that occur in complex food samples such as bread. As all ergot alkaloids share the ergoline structure and just differ in the substituents attached to this backbone, measurement of all ergot alkaloids in one sum parameter presents a time and cost saving alternative. The most important step for the development of such a sum parameter method is the reaction used to transfer all ergot alkaloids to one uniform structure. Two promising reactions, the acidic esterification to lysergic acid methyl ester and hydrazinolysis to lysergic acid hydrazide, were examined for possible use in a routine analysis method. In addition to yield and reaction rate, factors such as handling of the reaction and the possibility of parallel sample workup play a role. T2 - Adlershofer Forschungsforum 2022 CY - Berlin, Germany DA - 11.11.2022 KW - Ergot alkaloids KW - Screening PY - 2022 AN - OPUS4-56585 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Epping, Ruben T1 - Development of an analytical device to search for truffles N2 - The goal of this project is to develop a mobile technical solution for tracking down truffles, with which they can be harvested easier, faster, cheaper and more efficiently than with the current method of using trained dogs. The R&D cooperation project between BAM and sglux GmbH contains the characterization of the truffle aroma and identification of marker substances therein, the development of a fast, sensitive separation and quantification method based on ozone chemiluminescence as well as the construction of a prototype device. T2 - Tag der Chemie CY - Online Meeting DA - 06.07.2021 KW - Truffles KW - Volatile organic compounds KW - Chemiluminescence KW - Mobile device KW - Trace analysis PY - 2021 AN - OPUS4-52725 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schloß, Svenja T1 - Quantification of Phomopsin A: Biosynthesis of 15N6-labeled Internal Standard T2 - Rapid Methods Europe 2014 CY - Noordwijkerhout, Netherlands DA - 2014-03-31 PY - 2014 AN - OPUS4-31128 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Koch, Matthias T1 - New reference materials for mycotoxins and acrylamide - perfect tools for reliable food analysis T2 - Tag der Chemie, FU Berlin CY - Berlin, Germany DA - 2010-06-16 PY - 2010 AN - OPUS4-21307 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Merkel, Stefan T1 - Photochemische Transformationsprodukte von Ergotalkaloiden T2 - 41. Deutscher Lebensmittelchemikertag CY - Münster, Germany DA - 2012-09-10 PY - 2012 AN - OPUS4-27127 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Drzymala, Sarah T1 - SPE-HPLC Online Coupling for the Determination of Zearalenone in Edible Oil: First Results T2 - JCF Frühjahrssymposium CY - Berlin, Germany DA - 2013-03-06 PY - 2013 AN - OPUS4-27831 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dorgerloh, Ute T1 - Interlaboratory test for the determaination of mineral oil content in synthetic wastewater T2 - BERM-7 CY - Antwerp, Belgium DA - 1997-04-21 PY - 1997 AN - OPUS4-7513 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Riedel, Juliane T1 - New PFAS reference materials for environment and consumer products N2 - Per- and polyfluoroalkyl substances (PFAS) are a large group of emerging organic pollutants that contaminate the environment, food, and consumer products. They have a wide range of applications due to their water- and oil-repellent properties, as well as their chemical and thermal stability. However, the use of PFAS has raised concerns due to their persistence in the environment and their adverse health effects, leading to regulations aimed at controlling their use and minimizing exposure. Substances such as PFOS, PFHxS, and PFOA are listed in the Stockholm Convention on Persistent Organic Pollutants (POP Regulation, EU 2019/1021). Maximum levels have been set for PFAS in environmental matrices such as soil and water, but also for textiles as a relevant area of circular economy. Reliable PFAS analysis leads to an increasing global demand for certified reference materials (CRM). However, CRMs for PFAS in soils and textiles are rare or currently not available. To improve the metrological infrastructure and support PFAS measurements, two CRMs for PFAS in soil (BAM-U027) and PFAS in textiles (BAM-B003) based on ISO 17034 and ISO 33405 were developed. This poster provides an overview of the different steps for the preparation and characterization of these two reference materials. The assignment of the certified mass fractions for relevant PFAS targets (18 PFAS compounds for BAM-B003) is based on isotope dilution HPLC-MS/MS at three independent workplaces. The results of the BAM in-house study on BAM-U027 were supported by an interlaboratory comparison study. T2 - PFAS – Challenges and Scientific Perspectives in Human Health Risk Assessment CY - Berlin, Germany DA - 08.10.2025 KW - Quality assurance KW - Reference material KW - PFAS in textiles KW - PFAS in soil PY - 2025 AN - OPUS4-64356 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Keller, Julia T1 - Electrochemistry coupled with LC/MS for production and characterization of mycotoxin oxidation products N2 - Mycotoxins cause a variety of mold-related health risks which makes it necessary to further examine their metabolic pathways in human and other mammals. Beside standard in vitro assays with liver cell microsomes an increasing interest in new and rapid simulation techniques are playing a growing role in mycotoxin research. Herein, the coupling of electrochemistry with liquid chromatography and mass spectrometry (EC/LC/MS) is presented as fast and simple method to investigate the oxidative fate of mycotoxins. For this case study, two food relevant mycotoxins (zearalenone and citrinin) were selected. Experiments were performed by using an electrochemical flow through cell integrated in the flow path of the autosampler of the chromatographic system. The reaction mixture was separated by a RP-C18 column and analyzed by a single quadrupole MS (Figure 1). Oxidation products were generated by applying potentials of 400, 800, 1200 and 1600 mV vs Pd/H2 using a glassy carbon working electrode. Different oxidation reactions like hydroxylation, dehydrogenation and dimerization lead to a diverse product pattern of the investigated mycotoxins. In a comparative study, electrochemical generated reaction products were compared with metabolites produced by human and rat liver microsomes in vitro. The obtained data show that EC/LC/MS is a versatile and promising tool in mycotoxin research to support metabolic investigations of known and unknown mycotoxins. T2 - Tag der Chemie CY - Berlin, Germany DA - 03.07.2017 KW - Electrochemistry KW - Mycotoxins PY - 2017 AN - OPUS4-42980 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wegner, Karl David T1 - SWIR luminescent nanomaterials – key chemical parameters for bright probes for in vivo bioimaging N2 - A current challenge for studying physio-pathological phenomena and diseaserelated processes in living organisms with non-invasive optical bioimaging is the development of bright optical reporters that enable deep tissue penetration, a high detection sensitivity, and a high spatial and temporal resolution. The focus of this project are nanomaterials, which absorb and emit in the shortwave infrared (SWIR) between ~900–2500 nm where scattering, absorption, and autofluorescence of the tissue are strongly reduced compared to the visible and NIR. T2 - QD2024 - 12th International Conference on Quantum Dots CY - Munich, Germany DA - 18.03.2024 KW - Quantum dots KW - Advanced nanomaterials KW - Fluorescence KW - Quality assurance KW - Gold nanocluster KW - Shortwave infrared KW - Spectroscopy KW - Bioimaging PY - 2024 AN - OPUS4-59783 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hoffmann, Katrin T1 - Evaluation of Lanthanide-doped Glasses for Use as standards in Fluorometry T2 - First International Conference on Luminescence of Lanthanides CY - Odessa, Ukraine DA - 2010-09-05 PY - 2010 AN - OPUS4-21566 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kittler, Katrin T1 - Systematic availability of the cyanotoxin Cylindrospermopsin in Sinapis alba T2 - Tag der Chemie 2011 CY - Berlin, Germany DA - 2011-07-13 PY - 2011 AN - OPUS4-24032 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sommerfeld, Thomas A1 - Koch, Matthias T1 - CRM candidate for PAH mass fractions in rubber toys N2 - Polycyclic aromatic hydrocarbons (PAH) can contaminate plastic and rubber parts of consumer products including toys. PAH are present as impurities in some of the raw materials used for production of such articles, particularly in extender oils and in carbon black. Because PAH have negative effects on health (e.g. carcinogenic), standard methods have been developed in several countries to control PAH in consumer/toy products, mainly based on gas-chromatography mass-spectrometry (GC-MS). To protect consumers from hazards of PAH, national regulations and maximum levels are already in force, for example in Germany. Recently, maximum levels for 8 PAH compounds (benz[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[j]fluoranthene, benzo[e]pyrene, benzo[a]pyrene and dibenz[a,h]anthracene) have been established by EC-regulation 1272/2013. This resulted in an urgent need for certified reference materials (CRM) to meet the requirements of the EC-regulation (1 mg/kg for each PAH compound in consumer products and 0.5 mg/kg in toys, respectively). In 2016 BAM started a project to certify the PAH mass fractions in a toy CRM to fill the current gap of available reference materials. Several different toys from retailers were screened to obtain a real-life material representing PAH mass fractions in the range of the EC-maximum level. The finally selected material (rubber balls for children) was prepared and characterized with respect to homogeneity and stability of 18 PAH. The extension to other health-relevant PAH compounds, e.g. indeno[1,2,3-cd]pyrene and benzo[ghi]perylene, will increase the applicability of the CRM for costumers, e.g. from industry, conformity assessment bodies and private testing laboratories. The poster will present the current status of the ongoing CRM project including preparation of the candidate material and results from homogeneity and stability studies. In addition, first results of a joint German-Chinese interlaboratory comparison study will be shown. T2 - BERM-15, International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 23.09.2018 KW - Reference material KW - Organic contaminants KW - Toys KW - REACH PY - 2018 AN - OPUS4-46114 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mekonnen, Tessema Fenta T1 - Investigation of chlorpyrifos and its transformation products in food samples N2 - Chlorpyrifos (CPF), an anticholinesterase organophosphate insecticide, is commonly used to control pests in agricultural sectors. In recent years, it is one of the most frequently detected residues in fruits and vegetables. On the other hand, pesticides including chlorpyrifos undergo extensive abiotic (industrial processes, waste treatments and photodegradations) and/or biotic (metabolism and microbial activities) processes which lead to transformation products (TPs) with different toxicity. Furthermore, lack of representative standards and complexity of transformation mechanisms make monitoring of TPs in real samples difficult. The aim of this work was to investigate CPF and its TPs in selected food matrices. Representative standards of TPs were synthesized by electrochemistry coupled online to liquid chromatography-mass spectrometry (EC/LC/MS) that equipped with a follow-through and/or synthesis cell with boron doped diamond working electrode. The TPs were characterized by LC-MS/MS and high resolution mass spectrometry (HRMS) and used for real sample investigations. Different fruit and spice samples (fortified by TPs standards and blank) were extracted by dispersive solid phase extraction (dSPE) and analyzed by LC-MS/MS. Recoveries were obtained ranging between 94 – 101% (with matrix effect 85 – 97%). The method limit of detection (LOD) and quantification (LOQ) for CPF were 1.9 and 5.7 µg/kg, respectively. Among investigated samples CPF was detected in fresh lemon, black pepper and fenugreek seed with a content of 104, 31 and 4 µg/kg, respectively. Coriander and cinnamon samples also contained trace levels of CPF (