TY - JOUR A1 - Gross, U. A1 - Müller-Mai, C. A1 - Voigt, C. A1 - Berger, Georg A1 - Spitzer, Andrea T1 - In Vivo Tests of a Highly Porous Rapidly Resorbable Dicalcium Potassium Sodium Phosphate Glass-Ceramics N2 - Glass-ceramics containing Ca2KNa(PO4)2 as the main crystalline phase have a solubility which is 8 times higher than that of alpha-tricalcium phosphate ceramics. When using these compositions in drug delivery systems, especially in bone, it is necessary to create a material with a high open porosity. A Ca2KNa(PO4)2-based glass-ceramic was prepared from a borosilicate glass melt. The processed material includes minor amounts of boron which are low enough for medical application. Tissue response was studied using an animal model. Particles were implanted in rabbit femurs. Bone and soft tissue development occurred at the particle interfaces. In general, most particles were enclosed in the network of trabecular bone. The advantages of using a biomaterial with high porosity (pore size of 1-3 micron), together with rapid biodegradation, bioactivity and biocompatibility, despite traces of boron, were shown. 4 refs. T2 - 14th International Symposium on Ceramics in Medicine CY - Palm Springs, CA, USA DA - 2001-11-14 PY - 2002 DO - https://doi.org/10.4028/www.scientific.net/KEM.218-220.307 SN - 1013-9826 VL - 218-220 SP - 307 EP - 310 PB - Trans Tech Publ. CY - Aedermannsdorf AN - OPUS4-1935 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Gross, U. A1 - Müller-Mai, C. A1 - Voigt, C. A1 - Berger, Georg A1 - Spitzer, Andrea T1 - In vivo test of a high porous rapidly resorbable dicalcium potassium sodium phosphate glass-ceramics T2 - 14th International Symposium on Ceramics in Medicine ; Annual meeting of the International Society for Ceramics in Medicine 2001 CY - Palm Springs, CA, USA DA - 2001-11-14 PY - 2002 SN - 1013-9826 VL - 218-220 SP - 307 EP - 310 PB - Trans Tech Publ. CY - Aedermannsdorf AN - OPUS4-1893 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gross, U. A1 - Müller-Mai, C. A1 - Knabe, C. A1 - Berger, Georg A1 - Ploska, Ute A1 - Gildenhaar, Renate ED - Vincenzini, P. T1 - Animal experiments with biomaterials for direct bone contact which possess in comparison to TCP and HA products higher or lower solubility T2 - 10th International Ceramics Congress ; 3rd Forum on New Materials ; 10th CIMTEC 2002 CY - Florence, Italy DA - 2002-07-14 PY - 2003 PB - Techna CY - Faenza AN - OPUS4-1894 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Müller, A. A1 - Palzer, U. A1 - Rübner, Katrin A1 - Schnell, A. T1 - Lightweight aggregates - a new thermally bound lightweight aggregate of high resource efficiency - Lightweight concrete / Aufbaukörnungen - Eine neue thermisch gebundene leichte Gesteinskörnung mit hoher Ressourceneffizienz - Leichtbeton N2 - Recycling materials from building construction can currently not be adequately recycled. Reasons for this are their considerable heterogeneity in terms of materials composition and high fine partide content. Recycling as filling material and in the construction of waste disposal facilities, or as landfill, will in future no longer be possible in view of the stringent application of the German law of lifecyde management and/or the steady decrease of waste-disposal capacities. In this context, the joint research project “lightweight aggregates,” supported by the German Federal Ministry for Education and Research, a technology for manufacturing lightweight aggregates was developed. KW - Blähgranulate KW - Leichtbeton KW - Leichte Gesteinskörnung KW - Mauerwerkbruch KW - Recycling PY - 2013 SN - 0373-4331 SN - 1865-6528 N1 - Sprachen: Deutsch/Englisch - Languages: German/English VL - 79 IS - 2 SP - 124 EP - 126 PB - Bauverl. CY - Gütersloh AN - OPUS4-28641 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Behrens, H. A1 - Bauer, U. A1 - Reinsch, Stefan A1 - Kiefer, P. A1 - Müller, Ralf A1 - Deubener, J. T1 - Structural relaxation mechanisms in hydrous sodium borosilicate glasses N2 - Borosilicate glasses (16Na2O–10B2O3–74SiO2, NBS) with water contents up to 22 mol% H2O were prepared to study the effect of water on structural relaxation using DTA, viscometry and internal friction measurements. The results show that the glass transition temperature Tg of DTA and the isokom temperature T12, of viscometry are in excellent agreement, confirming the equivalence of enthalpy and viscous relaxation for NBS glass. Combining Tg data with water speciation data demonstrates that OH groups are mainly responsible for the decrease of Tg with increasing hydration, while molecular water plays only a minor role. Internal friction spectra at 7.125 Hz confirm the decisive influence of water on mechanical relaxation. The temperature range of α-relaxation (glass transition) strongly decreases while two β-relaxation peaks (sub-Tg) progressively appear with increasing water content. A high temperature β-relaxation peak, attributed to the presence of OH groups, shifts from 670 to 450 K as total water content increases from 0.01 to 5 wt%. A low temperature β-relaxation peak, attributed to molecular water, appears at 380 K and 330 K in glasses containing 3 and 5 wt% H2O, respectively. These findings suggest that relaxation mechanism of different hydrous species at low temperature may contribute to fatigue of stressed glasses. KW - Borosilicate glass KW - Water KW - Relaxation KW - Internal friction KW - Glass transition PY - 2018 DO - https://doi.org/10.1016/j.jnoncrysol.2018.05.025 VL - 497 SP - 30 EP - 39 PB - Elsevier B.V. AN - OPUS4-45608 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Berger, Georg A1 - Müller-Mai, C. A1 - Voigt, C. A1 - Gross, U. ED - Wise, D. L. T1 - Bone development and bone structure depend on surface roughness and structure of metalic implants KW - Bone Development KW - Surface Structure PY - 2000 SN - 0-8247-0318-9 SP - 457 EP - 481 PB - Dekker CY - New York AN - OPUS4-878 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Berger, Georg A1 - Mensing, M. A1 - Sittinger, M. A1 - Gross, U. A1 - Rahmanzadeh, R. A1 - Müller-Mai, C. ED - Haas, N. P. T1 - Autologe Chondrozyten Transplantation durch Tissue Engineering auf resorbierbaren bioaktiven Biomaterialträgern T2 - 64. Jahrestagung der Deutschen Gesellschaft für Unfallchirurgie CY - Hannover, Deutschland DA - 2000-09-10 PY - 2000 SN - 3-540-67734-8 SN - 0945-1382 N1 - Serientitel: Hefte zur Zeitschrift "Der Unfallchirurg" – Series title: Hefte zur Zeitschrift "Der Unfallchirurg" IS - 282 SP - 1(?) PB - Springer CY - Berlin AN - OPUS4-948 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Müller, Christina A1 - Elagin, Mstislav A1 - Bellon, Carsten A1 - Ewert, Uwe A1 - Zscherpel, Uwe A1 - Rosenthal, Martina A1 - Redmer, Bernhard A1 - Ryden, H. A1 - Ronneteg, U. ED - Proske, D. T1 - Probability-of-Detection-Evaluation of NDT Techniques for Cu-Canisters for Risk Assessment of Nuclear Waste Encapsulation T2 - 4th International Probabilistic Symposium CY - Berlin, Germany DA - 2006-10-12 KW - Zerstörungsfreie Prüfung KW - Zuverlässigkeit KW - POD KW - Endlagerung radioaktiver Abfälle PY - 2006 SN - 3-00-019232-8 N1 - Geburtsname von Rosenthal, Martina: Scharmach, M. - Birth name of Rosenthal, Martina: Scharmach, M. SP - 227 EP - 252 PB - Bundesanstalt für Materialforschung und -prüfung CY - Berlin AN - OPUS4-14418 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina A1 - Elagin, Mstislav A1 - Bellon, Carsten A1 - Ewert, Uwe A1 - Zscherpel, Uwe A1 - Rosenthal, Martina A1 - Redmer, Bernhard A1 - Ryden, H. A1 - Ronneteg, U. T1 - POD (Probability of Detection) Evaluation of NDT Techniques for Cu-Canisters for Risk Assessment of Nuclear Waste Encapsulation T2 - 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 KW - Zerstörungsfreie Prüfung KW - Zuverlässigkeit KW - POD KW - Endlagerung radioaktiver Abfälle PY - 2006 SN - 3-931381-86-2 N1 - Geburtsname von Rosenthal, Martina: Scharmach, M. - Birth name of Rosenthal, Martina: Scharmach, M. SP - 1(?) EP - 22(?) PB - European Federation for Non-Destructive Testing CY - Berlin AN - OPUS4-14419 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Müller, Christina A1 - Elagin, Mstislav A1 - Bellon, Carsten A1 - Ewert, Uwe A1 - Zscherpel, Uwe A1 - Rosenthal, Martina A1 - Redmer, Bernhard A1 - Ryden, H. A1 - Ronneteg, U. T1 - Reliability evaluation of NDT techniques for Cu-welds for risk assessment of nuclear waste encapsulation KW - Zerstörungsfreie Prüfung KW - Zuverlässigkeit KW - POD KW - Endlagerung radioaktiver Abfälle PY - 2006 SN - 0025-5300 N1 - Geburtsname von Rosenthal, Martina: Scharmach, M. - Birth name of Rosenthal, Martina: Scharmach, M. VL - 48 IS - 3 SP - 111 EP - 117 PB - Carl Hanser Verlag CY - München AN - OPUS4-14421 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina A1 - Elagin, Mstislav A1 - Bellon, Carsten A1 - Ewert, Uwe A1 - Zscherpel, Uwe A1 - Scharmach, M. A1 - Redmer, Bernhard A1 - Ryden, H. A1 - Ronneteg, U. ED - Bièth, M. ED - Whittle, J. T1 - POD (Probability of Detection) Evaluation of NDT Techniques for Cu-Canisters for Risk Assessment of Nuclear Waste Encapsulation T2 - 5th International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurised Components CY - San Diego, CA, USA DA - 2006-05-10 KW - Zerstörungsfreie Prüfung KW - Zuverlässigkeit KW - POD PY - 2007 SN - 978-92-79-06107-3 SN - 1018-5593 N1 - Serientitel: JRC Scientific and Technical Reports – Series title: JRC Scientific and Technical Reports IS - Paper 1005 SP - 274 EP - 295 PB - Office for Official Publications of the European Communities CY - Luxembourg AN - OPUS4-15887 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Torge, Manfred A1 - Müller, Wolfgang A1 - Schaaf, U. T1 - Restaurierung von Holzfenstern KW - Restaurierung KW - Fenster PY - 2012 N1 - Sprachen: Deutsch/Polnisch - Languages: German/Polish IS - Faltblatt 9 SP - 1 EP - 8 PB - Druckhaus Köthen GmbH AN - OPUS4-26803 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Torge, Manfred A1 - Müller, Wolfgang A1 - Schaaf, U. T1 - Restaurierung von Holzfenstern KW - Restaurierung KW - Fenster PY - 2012 N1 - Sprachen: Deutsch/Polnisch - Languages: German/Polish IS - Faltblatt 8 SP - 1 EP - 8 PB - Druckhaus Köthen GmbH AN - OPUS4-26798 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Jaeger, Carsten A1 - Ritter, D. A1 - Goeritzer, M. A1 - Thiele, A. A1 - Blumrich, A. A1 - Beyhoff, N. A1 - Luettges, K. A1 - Smeir, E. A1 - Kasch, J. A1 - Grune, J. A1 - Müller, O. A1 - Klopfleisch, R. A1 - Foryst-Ludwig, A. A1 - Kintscher, U. T1 - Liver X Receptor Agonist AZ876 Induces Beneficial Endogenous Cardiac Lipid Reprogramming and Protects Against Isoproterenol-Induced Cardiac Damage N2 - Background - It is known that dietary intake of polyunsaturated fatty acids may improve cardiac function. However, relatively high daily doses are required to achieve sufficient cardiac concentrations of beneficial omega‐3 fatty acids. The liver X receptor (LXR) is a nuclear hormone receptor and a crucial regulator of lipid homeostasis in mammals. LXR activation has been shown to endogenously reprogram cellular lipid profiles toward increased polyunsaturated fatty acids levels. Here we studied whether LXR lipid reprogramming occurs in cardiac tissue and exerts cardioprotective actions. Methods and Results - Male 129SV mice were treated with the LXR agonist AZ876 (20 µmol/kg per day) for 11 days. From day 6, the mice were injected with the nonselective β‐agonist isoproterenol for 4 consecutive days to induce diastolic dysfunction and subendocardial fibrosis while maintaining systolic function. Treatment with isoproterenol led to a marked impairment of global longitudinal strain and the E/e' ratio of transmitral flow to mitral annular velocity, which were both significantly improved by the LXR agonist. Histological examination showed a significant reduction in isoproterenol‐induced subendocardial fibrosis by AZ876. Analysis of the cardiac lipid composition by liquid chromatography‐high resolution mass spectrometry revealed a significant increase in cardiac polyunsaturated fatty acids levels and a significant reduction in saturated fatty acids by AZ876. Conclusions - The present study provides evidence that the LXR agonist AZ876 prevents subendocardial damage, improves global longitudinal strain and E/e' in a mouse model of isoproterenol‐induced cardiac damage, accompanied by an upregulation of cardiac polyunsaturated fatty acids levels. Cardiac LXR activation and beneficial endogenous cardiac lipid reprogramming may provide a new therapeutic strategy in cardiac disease with diastolic dysfunction. KW - Heart failure KW - Lipids KW - Liver X receptor KW - Diastolic dysfunction KW - Nuclear receptor PY - 2021 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-529352 DO - https://doi.org/10.1161/JAHA.120.019473 VL - 10 IS - 14 SP - e019473 AN - OPUS4-52935 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Dal Molin, E. S. A1 - Henning, L. M. A1 - Müller, J. T. A1 - Smales, Glen Jacob A1 - Pauw, Brian Richard A1 - Bekheet, M. F. A1 - Gurlo, A. A1 - Simon, U. T1 - Robocasting of ordered mesoporous silica‐based monoliths: Rheological, textural, and mechanical characterization N2 - Hierarchically porous, high‐surface‐area silica materials are excellent candidates for multiple applications like catalysis and environmental remediation. Shaping these materials with additive manufacturing (AM) techniques, like robocasting, could enable their use with the benefit of on‐demand, customized shaping and maximizing performance. Herein, ordered mesoporous silica COK‐12 slurries were robocasted into monoliths, containing different ratios of uncalcined COK‐12 and sodium bentonite (0–25 wt.%). The rheology of the mixed slurries is characterized by lower flow indexes (0.69 vs. 0.32) and higher yield stresses (96 vs. 259 Pa) compared to pure COK‐12 ones. Monoliths were printed in woodpile structures and calcined at 600°C. Micro‐CT measurements showed a linear shrinkage of 25% after calcination. Mechanical characterization showed increased uniaxial strength (0.20 ± 0.07 to 1.0 ± 0.3 MPa) with increasing binder/solids ratio from 13 to 25%. The amorphous, mesoporous structure of COK‐12 was retained. The structures exhibited open porosities of 52 ± 4% and showed higher specific mesopore volumes, and increased average mesopore size (6 vs. 8 nm) compared to COK‐12. Small‐angle x‐ray scattering analysis revealed an increased lattice parameter (10.3 vs. 11.0 nm) and reduced wall thickness (3.1 nm vs. 4.1 nm) of the COK‐12 in the monoliths. These properties indicate suitability for their application as porous supports and adsorbents. KW - Industrial and Manufacturing Engineering KW - Additive manufacturing KW - OMS KW - Porous materials KW - Robocasting KW - X-ray scattering KW - MOUSE PY - 2023 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-582503 DO - https://doi.org/10.1002/nano.202300109 VL - 4 IS - 11-12 SP - 615 EP - 631 PB - Wiley-VCH GmbH AN - OPUS4-58250 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Müller, M.E.H. A1 - Urban, K. A1 - Köppen, Robert A1 - Siegel, David A1 - Korn, U. A1 - Koch, Matthias T1 - Mycotoxins as antagonistic or supporting agents in the interaction between phytopathogenic Fusarium and Alternaria fungi N2 - The role of mycotoxins in the microbial competition in an ecosystem or on the same host plant is still unclear. Therefore, a laboratory study was conducted to evaluate the influence of mycotoxins on growth and mycotoxin production of Fusarium and Alternaria fungi. Fusarium culmorum Fc13, Fusarium graminearum Fg23 and two Alternaria tenuissima isolates (At18 and At220) were incubated on wheat kernels supplemented with alternariol (AOH), tetramic acid derivates (TeA), deoxynivalenol (DON) and zearalenone (ZEA) in an in vitro test system. Fungal biomass was quantified by determining ergosterol content. Three Fusarium toxins (DON, nivalenol and ZEA) and three Alternaria toxins (AOH, alternariol methyl ether (AME) and altenuene) were analysed by HPLC-MS/MS. If Alternaria strains grew in wheat kernels spiked with Fusarium mycotoxins, their growth rates were moderately increased, their AOH and AME production was enhanced and they were simultaneously capable of degrading the Fusarium mycotoxins DON and ZEA. In contrast, both Fusarium strains behaved quite differently. The growth rate of Fc13 was not distinctly influenced, while Fg23 increased its growth in wheat kernels spiked with AOH. TeA depressed the ergosterol content in Fc13 as well as in Fg23. The DON production of Fc13 was slightly depressed, whereas the ZEA production was significantly increased. In contrast, Fg23 restricted its ZEA production. Both Fusarium strains were not capable of degrading the Alternaria mycotoxin AOH. Mycotoxins might play an important role in the interfungal competitive processes. They influence growth rates and mycotoxin production of the antagonistic combatants. The observed effects between phytopathogenic Alternaria and Fusarium strains and their mycotoxins aid the understanding of the complexity of microbial competitive behaviour in natural environments. KW - Phytopathogen KW - Trichothecenes KW - Alternaria mycotoxins KW - Multi-mycotoxin analysis KW - Inter-fungal competition PY - 2015 DO - https://doi.org/10.3920/WMJ2014.1747 SN - 1875-0710 SN - 1875-0796 VL - 8 IS - 3 SP - 311 EP - 321 PB - Wageningen Academic Publishers CY - Wageningen AN - OPUS4-32849 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Müller, Bernd R. A1 - Görner, Wolf A1 - Hentschel, Manfred P. A1 - Riesemeier, Heinrich A1 - Krumrey, M. A1 - Ulm, G. A1 - Diete, W. A1 - Klein, U. A1 - Frahm, R. T1 - BAMlin - the first hard X-ray beamline at BESSY II N2 - The first hard X-ray beamline at BESSY II will be installed by BAM and PTB at a superconducting 7 T wavelength shifter. The main optical elements of the beamline are a Double-Multilayer-Monochromator and a Double-Crystal-Monochromator. The two devices can be used separately or in-line. Main applications of monochromatic radiation with photon energies up to 50 keV are X-ray fluorescence analysis, micro-computed tomography, X-ray topography, detector calibration and reflectometry. Calculable undispersed radiation up to 200 keV will be available for radiometric applications. KW - Double-Multilayer-Monochromator with meridional bender KW - Double-Crystal-Monochromator with sagittal bender KW - X-ray fluorescence analysis KW - Micro-computed tomography KW - X-ray topography KW - Detector calibration KW - Reflectometry PY - 2001 DO - https://doi.org/10.1016/S0168-9002(01)00466-1 SN - 0168-9002 SN - 0167-5087 VL - 467-468 IS - 1 SP - 703 EP - 706 PB - North-Holland CY - Amsterdam AN - OPUS4-1171 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Röhrich, J. A1 - Damerow, T. A1 - Hahn, W. A1 - Müller, U. A1 - Reinholz, Uwe A1 - Denker, A. T1 - A tandetron as proton injector for the eye tumor therapy in Berlin N2 - The therapy of eye tumors with fast protons is an excellent tool giving very high local control rates. At the Helmholtz-Zentrum Berlin (HZB) almost 1800 patients were treated since 1998. A 2 MV Tandetron™ was installed as injector for the k = 132 HZB cyclotron. Using the standard 358 duoplasmatron ion source with direct extraction of negative hydrogen ions an extremely stable proton beam can be delivered, both on the short-term and the long-term scale. The hair-needle filaments made from thoriated tungsten wires have safe operation times of more than 1000 h. KW - Biomedical equipment KW - Duoplasmatrons KW - Eye KW - Particle beam extraction KW - Radiation therapy KW - Tumours PY - 2012 DO - https://doi.org/10.1063/1.3662475 SN - 0034-6748 SN - 1089-7623 VL - 83 IS - 02B903 SP - 1 EP - 3 PB - American Institute of Physics CY - Melville, NY AN - OPUS4-25721 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pavlovic, Mato A1 - Ronneteg, U. A1 - Müller, Christina A1 - Ewert, Uwe A1 - Boller, C. T1 - Safe product design - the role of the NDE reliability analysis N2 - When pushed to the limits of their detection capability, NDE systems do not produce consistent hit/miss indications. Their capability of detecting small defects is therefore expressed in terms of POD. An adequate NDE system is required to ensure the structural integrity. In conventional signal response analysis, the POD is expressed as a function of the defect size, and its adequacy for the inspection task is tested against the maximum allowable defect size which will not undermine the structural integrity. Analyses of modern structures show that other parameters, beside the defect size, can both significantly influence the POD and determine the severity of the defect for the structure. Within the multi-parameter reliability analysis, the POD is expressed as a function of those influencing parameters. When determining the adequacy of the NDE system, the capability of detecting a defect has to be expressed and tested against the critical value of exactly that parameter that determines defects severity for the structure. Failing to do so can lead to a rejection of the healthy, or acceptance of the bad part. The principle is demonstrated on the example of the Transmit-Receive Longitudinal (TRL) ultrasonic inspection of the iron cast component for semi-elliptical surface defects. T2 - 18th WCNDT - World conference on nondestructive testing CY - Durban, South Africa DA - 16.04.2012 KW - Reliability KW - Probability of detection (POD) KW - Multi-parameter KW - Ultrasonics KW - Transmit receive longitudinal (TRL) PY - 2012 SN - 978-0-620-52872-6 SP - 1 EP - 9 (Paper 310) AN - OPUS4-27581 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Torge, Manfred A1 - Drachenberg, E. A1 - Müller, W. A1 - Schaaf, U. A1 - Bücker, Michael A1 - Feldmann, Ines A1 - Mull, Birte A1 - Brödner, Doris A1 - Mathies, Helena A1 - Krug, Sonja T1 - Sanierung der umweltgeschädigten Fensterverglasungen der Friedenskirche in Schweidnitz-Niederschlesien und Ermittlung der die Kirche beeinflussenden Material- und Klimaparameter im Sinne einer nachhaltigen Konservierung N2 - Die evangelische Friedenskirche in Schweidnitz (Polen) ist ein besonderes Zeugnis des deutsch-polnischen und damit europäischen Kulturerbes. Deshalb wurde sie auch 2001 einstimmig vom UNESCO-Komitee in die Liste des Kultur- und Naturerbes der Welt aufgenommen. Sie stellt ein einmaliges Denkmal des hoch entwickelten schlesischen Fachwerk- und Holzbaues aus dem 17. Jahrhundert dar. Im Rahmen einer interdisziplinären Zusammenarbeit zwischen Fachleuten aus Deutschland und Polen erfolgte die fachgerechte Restaurierung von 39 Fensterverglasungen und Rahmen mit dem Ziel, eine Abdichtung des Kirchenraumes gegen eine zeitweilig zu feuchte und mit Schadstoffen angereicherte Außenluft zu erreichen. Die Bundesanstalt für Materialforschung und -prüfung in Berlin führte Untersuchungen zu den klimatischen Bedingungen im Kirchentraum durch, um für die Kunstschätze nachhaltig verträgliche Bedingungen zu sichern. In der Friedenkirche war, wie auch in vielen anderen Bauwerken, in den 70-er und 80-er Jahren des 20. Jh. das Holzschutzmittel Xylamon verwendet worden. Neben der Gefahr für die sensiblen Materialien der Kunstwerke ist durch Holzschutzmittel auch ein Einfluss auf die Gesundheit von im Kirchenraum befindlichen Personen nicht auszuschließen. Mit Hilfe unterschiedlicher Untersuchungsmethoden konnten Emissionen aus Holzschutzmitteln und ihre Verbreitung im Kircheninneren nachgewiesen werden. KW - Restaurierung KW - Klimamessungen KW - Holzschutzmittel KW - PCP KW - Lindan PY - 2013 SN - 978-3-8167-9021-1 VL - D 1015 IS - Abschlussbericht / Az. 28806 - 45 SP - 1 EP - 115 PB - Fraunhofer IRB Verl. AN - OPUS4-28959 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meng, Birgit A1 - Fontana, Patrick A1 - Müller, U. A1 - Bürgisser, P. ED - Uzoegbo, H.C. ED - Schmidt, Wolfram T1 - Influence of natural pozzolans on the risk of alkali silica reaction N2 - Industrial byproducts and natural pozzolanas are increasingly being used as supplementary cementitious materials. In the group of natural pozzolanas volcanic ashes are the most prominent. Despite the fact that volcanic pozzolanas were used since Roman times, not much is known about their role in influencing the long term durability of concrete. The paper presents results of the volcanic pozzolana ‘Rhenish trass’, which is quarried in western Germany and its role during an alkali silica reaction (ASR). Field data and laboratory experiments indicate that trass releases alkalis into the pore solution but also changes cement paste chemistry and alkali binding behavior. There seems to be a sensitive balance between alkali release and increase of alkali binding capacity, both mechanisms crucial for the course of an ASR in concrete. T2 - ACCTA - International conference on advances in cement and concrete technology in Africa 2013 CY - Johannesburg, South Africa DA - 28.01.2013 KW - Alkali silica reaction KW - Natural pozzolans KW - Microscopy KW - Micro chemical analysis PY - 2013 SN - 978-3-9815360-3-4 SP - 801 EP - 808 AN - OPUS4-27765 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina A1 - Bertovic, Marija A1 - Pavlovic, Mato A1 - Kanzler, Daniel A1 - Ewert, Uwe A1 - Pitkänen, J. A1 - Ronneteg, U. T1 - Holistically evaluating the reliability of NDE systems - paradigm shift N2 - New methodologies for evaluating the reliability of NDE systems are discussed in accordance with the specific requirements of industrial application. After a review of the substantive issues from the previous decades, the go forward guidance is concluded. For high safety demands a quantitative probability of detection (POD) created from hit miss experiments or signal response analysis and ROC (Receiver Operating Characteristics) are typically created. The modular model distinguishes between the influence of pure physics and technique, industrial application factors and the human factor and helps to learn what factors are covered by modelling, open or blind trials. A new paradigm is offered to consider the POD or reliability of the system as a function of the configuration of input variables and use it for optimisation rather than for a final judgement. New approaches are considered dealing with real defects in a realistic environment, affordable but precisely like the Bayesian approach or model assisted methods. Among the influencing parameters, the human factor is of high importance. A systematic psychological approach helps to find out where the bottlenecks are and shows possibilities for improvement. T2 - 18th WCNDT - World conference on nondestructive testing CY - Durban, South Africa DA - 16.04.2012 KW - Reliability of NDE KW - POD KW - ROC KW - Modular Model KW - Multiparameter-POD KW - Bayesian Approach KW - Human Factor PY - 2012 SN - 978-0-620-52872-6 SP - 1 EP - 14 (Paper 591) AN - OPUS4-27579 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -