TY - GEN A1 - Berger, Achim A1 - Görner, Wolf A1 - Merchel, Silke A1 - Radtke, Martin A1 - Riesemeier, Heinrich A1 - Reiche, I. A1 - Riederer, J. T1 - Non-destructive investigations of Dürer's silver point drawings by Sy-XRF PY - 2002 UR - http://www.helmholtz-berlin.de/media/media/oea/web/pr_webseite/druckschriften/berichte/bessy/annualreport2001.pdf#page=292 SN - 0179-4159 SP - 292 EP - 293 PB - Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung CY - Berlin AN - OPUS4-1324 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Berger, Achim A1 - Görner, Wolf A1 - Merchel, Silke A1 - Radtke, Martin A1 - Riesemeier, Heinrich A1 - Reiche, I. A1 - Riederer, J. T1 - A closer look at Albrecht Dürer's drawings (1471-1528) PY - 2002 UR - http://www.helmholtz-berlin.de/media/media/oea/web/pr_webseite/druckschriften/infos/bessy/highlights2001.pdf#page=32 SN - 0179-4159 SP - 32 EP - 33 PB - Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung CY - Berlin AN - OPUS4-1323 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rodrigues, M. A1 - Schreiner, M. A1 - Melcher, M. A1 - Guerra, M. A1 - Salomon, J. A1 - Radtke, Martin A1 - Alram, M. A1 - Schindel, N. T1 - Characterization of the silver coins of the Hoard of Becin by x-ray based methods N2 - Four hundred sixteen silver coins stemming from the Ottoman Empire (16th and 17th centuries) were analyzed in order to confirm the fineness of the coinage as well as to study the provenance of the alloy used for the coins. As most of the coins showed the typical green patina on their surfaces due to corrosion processes which have led to the depletion of copper in the near-surface domains of the silver coins in comparison to their core composition, small samples by cutting splinters from the coins had to be taken, embedded in synthetic resin and cross-sectioned in order to investigate the true-heart metal composition. The type of the alloy was investigated as well as if coins minted in different locations demonstrated homogeneous traits concerning the predominant impurities which could suggest a common ore. Several X-ray based techniques (µ-XRF, µ-SRXRF and µ-PIXE) could be applied in order to determine the silver contents as well as the minor and trace elements. Finally, SEM/EDX was applied in order to study the homogeneity/heterogeneity of the coins and the presence of surface enrichments. In general, the silver content of the analyzed specimen varies between 90% and 95%. These outcomes have not supported the historical interpretations, which predict that during the period studied a debasement of approximately 44% of the silver content of the coins should have occurred. KW - PIXE KW - SRXRF KW - SEM/EDX KW - Silver coins PY - 2011 DO - https://doi.org/10.1016/j.nimb.2011.04.068 SN - 0168-583X SN - 1872-9584 VL - 269 IS - 24 SP - 3041 EP - 3045 PB - Elsevier B.V. CY - Amsterdam AN - OPUS4-25289 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Reiche, I. A1 - Berger, Achim A1 - Duval, A. A1 - Görner, Wolf A1 - Guicharnaud, H. A1 - Merchel, Silke A1 - Radtke, Martin A1 - Riederer, J. A1 - Riesemeier, Heinrich T1 - Traces of Albrecht Dürer: Non-destructive analyses of Renaissance silverpoint drawings KW - Nuclear industry KW - Nuclear medicine PY - 2004 SN - 92-0-114703-1 SN - 0074-1876 IS - 1181 SP - 138 EP - 142 PB - IAEA CY - Vienna AN - OPUS4-5548 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Reiche, I. A1 - Berger, Achim A1 - Duval, A. A1 - Görner, Wolf A1 - Guicharnaud, H. A1 - Merchel, Silke A1 - Radtke, Martin A1 - Riederer, J. A1 - Riesemeier, Heinrich A1 - Roth, M. ED - Röhrs, S. T1 - Auf den Spuren Albrecht Dürers - Zerstörungsfreie Untersuchung von Silberstiftzeichnungen mittels Mikro-PIXE und Synchrotron-induzierter Mikro-RFA T2 - Jahrestagung 2003 im Ethnologischen Museum Berlin-Dahlem CY - Berlin, Deutschland DA - 2003-03-12 PY - 2003 SN - 3-00-014223-1 SN - 0949-4057 SP - 118 EP - 120 CY - [Frankfurt am Main] AN - OPUS4-2356 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin A1 - Berger, Achim A1 - Görner, Wolf A1 - Merchel, Silke A1 - Reiche, I. A1 - Riederer, J. A1 - Riesemeier, H. T1 - Spatial Resolved Trace Analysis of Dürer's Silver Point Drawings by Means of SR-XRF T2 - European Conference on Energy Dispersive X-Ray Spectrometry (EDXRS) CY - Berlin, Germany DA - 2002-06-16 PY - 2002 SP - 158 AN - OPUS4-1397 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Reiche, I. A1 - Berger, Achim A1 - Buck, St. A1 - Görner, Wolf A1 - Ketelsen, Th. A1 - Merchel, Silke A1 - Radtke, Martin A1 - Riederer, J. A1 - Riesemeier, Heinrich T1 - BAMline meets Dürer and van Eyck - Multi-disciplinary investigation of Renaissance silver point drawings by µ-SR-XRF N2 - - http://www.bessy.de/publications/05.annual_reports/files/AnnualReport2002.pdf - PY - 2003 UR - http://www.helmholtz-berlin.de/media/media/oea/web/pr_webseite/druckschriften/berichte/bessy/annualreport2002.pdf#page=416 SN - 0179-4159 SP - 416 EP - 418 PB - Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung CY - Berlin AN - OPUS4-2496 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Radtke, Martin A1 - Reiche, I. A1 - Berger, Achim A1 - Merchel, Silke A1 - Riesemeier, Heinrich A1 - Görner, Wolf A1 - Riederer, J. A1 - Roth, M. ED - Simionovici, A. T1 - BAMline meets Dürer and Van Eyck - Spatially resolved SR-XRF analyses of silver point drawings and their mysterious inscriptions T2 - 17th International Conference on X-Ray Optics and Microanalysis ; 17th ICXOM CY - Chamonix, France DA - 2003-09-22 PY - 2003 N1 - Serientitel: Spectrochimica acta : Part B, Atomic spectroscopy – Series title: Spectrochimica acta : Part B, Atomic spectroscopy IS - 59.2004,10/11 SP - 48 PB - Elsevier CY - Amsterdam AN - OPUS4-2690 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Reiche, I. A1 - Berger, Achim A1 - Görner, Wolf A1 - Merchel, Silke A1 - Radtke, Martin A1 - Riederer, J. A1 - Riesemeier, Heinrich T1 - Silberstiftzeichnungen - Zerstörungsfreie Spurenanalyse mit Synchrotronstrahlung T2 - 10. IADA-Kongress (Internationale Arbeitsgemeinschaft der Archiv-, Bibliotheks- und Graphikrestauratoren) CY - Göttingen, Deutschland DA - 2003-09-21 PY - 2003 SN - 1563-2628 VL - 4 PB - Foto Text Verl. CY - Stuttgart AN - OPUS4-2663 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Reiche, I. A1 - Berger, Achim A1 - Duval, A. A1 - Görner, Wolf A1 - Guicharnaud, H. A1 - Merchel, Silke A1 - Radtke, Martin A1 - Riederer, J. A1 - Riesemeier, Heinrich A1 - Roth, M. ED - Marabelli, M. ED - Tabaso, M. T1 - Spatially resolved SR-XRF analyses of complex drawings of the Holbein family T2 - 8th International Conference on "Non-Destructive Investigations and Microanalysis for the Diagnostics and Conservation of the Cultural and Environmental Heritage" CY - Lecce, Italy DA - 2005-05-15 KW - X-ray spectrometry KW - XRF KW - Röntgenfluoreszenzanalyse KW - RFA KW - Silverpoint drawing KW - Silberstiftzeichnung PY - 2005 SP - 7 pages PB - Italian Society of Non Destructive Testing CY - Lecce AN - OPUS4-7677 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Reiche, I. A1 - Berger, Achim A1 - Görner, Wolf A1 - Merchel, Silke A1 - Radtke, Martin A1 - Riederer, J. A1 - Riesemeier, Heinrich A1 - Roth, M. T1 - Following the traces of Albrecht Dürer: analysis of silverpoint drawings by spatially resolved synchrotron-induced X-ray fluorescence analysis N2 - Spatially resolved X-ray fluorescence analysis using synchrotron radiation (SR-XRF) at the wavelength shifter beamline, BAMline, at BESSY was used to investigate Renaissance silverpoint drawings as it is extremely sensitive, non-destructive and can be carried out in air using an excitation spot in the hundred micrometer range. This paper deals with first results of the study of silverpoint drawings of Albrecht Dürer (1471–1528) belonging to the sketchbook that Albrecht Dürer used during a travel to the Netherlands in 1520/21. These results are compared to a PIXE study performed on drawings from the same sketchbook. The minor element composition of the silverpoint used for the drawings in the sketchbook was (10.6 ± 3.5) wt.% of Cu and traces of Zn. Mercury was found in the marks but does not belong to the initial composition of the silverpoint as it is attributed to an alteration phenomenon. One drawing of the sketchbook represents an exception. It consists of silver marks containing an additional minor element, Zn, in the marks and was, therefore, created with another silverpoint, probably at a different time than the other drawings. KW - Synchrotron KW - SR-XRF analysis KW - Drawing KW - Silverpoint KW - Albrecht Dürer PY - 2004 DO - https://doi.org/10.1016/j.nimb.2004.03.081 SN - 0168-583X SN - 1872-9584 VL - 226 IS - 1-2 SP - 83 EP - 91 PB - Elsevier CY - Amsterdam AN - OPUS4-4574 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Reiche, I. A1 - Berger, Achim A1 - Bevers, H. A1 - Dupuis, G. A1 - Duval, A. A1 - Görner, Wolf A1 - Guicharnaud, H. A1 - Merchel, Silke A1 - Radtke, Martin A1 - Riederer, J. A1 - Riesemeier, Heinrich A1 - Roth, M. T1 - Spatially resolved SR-XRF analyses of complex drawings by the Holbein family and silverpoint drawings by Rembrandt KW - X-ray spectrometry KW - XRF KW - Röntgenfluoreszenzanalyse KW - RFA KW - Silverpoint drawing KW - Silberstiftzeichnung PY - 2005 UR - http://www.helmholtz-berlin.de/media/media/oea/web/pr_webseite/druckschriften/berichte/bessy/annualreport2004.pdf#page=491 SN - 0179-4159 SP - 491 EP - 493 PB - Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung CY - Berlin AN - OPUS4-7380 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Wilde, L. A1 - Radnik, J. A1 - Schneider, M. A1 - Herein, D. A1 - Riesemeier, Heinrich A1 - Radtke, Martin T1 - In situ TEY cell for XAS measurements at the BAMline PY - 2004 UR - http://www.helmholtz-berlin.de/media/media/oea/web/pr_webseite/druckschriften/berichte/bessy/annualreport2003.pdf#page=283 SN - 0179-4159 SP - 283 EP - 285 PB - Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung CY - Berlin AN - OPUS4-3508 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Reiche, I. A1 - Berger, Achim A1 - Duval, A. A1 - Görner, Wolf A1 - Merchel, Silke A1 - Radtke, Martin A1 - Riederer, J. A1 - Riesemeier, Heinrich T1 - Metallstiftzeichnungen Albrecht Dürers KW - Synchrotron KW - XRF analysis KW - Drawings KW - Archaeometry KW - Röntgenfluoreszenzanalyse (RFA) KW - Zeichnungen KW - Archäometrie KW - Albrecht Dürer PY - 2004 SN - 1563-2628 VL - 5 IS - 2 SP - 30 EP - 38 PB - Foto Text Verl. CY - Stuttgart AN - OPUS4-3570 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Görner, Wolf A1 - Berger, Achim A1 - Merchel, Silke A1 - Pernicka, E. A1 - Radtke, Martin A1 - Reiche, I. A1 - Reinholz, Uwe A1 - Riederer, J. A1 - Riesemeier, Heinrich A1 - Wunderlich, C. H. T1 - Kunst- und Kulturgüter unter "Beschuss" T2 - Jahrestagung Zerstörungsfreie Materialprüfung 2004 CY - Salzburg, Österreich DA - 2004-05-17 KW - SY-RFA KW - PIXE KW - PIGE KW - PAA KW - Zerstörungsfreie Analyse KW - Silberstiftzeichnungen KW - Himmelsscheibe von Nebra KW - Indische Moghulmalereien PY - 2004 UR - http://www.ndt.net/article/dgzfp04/papers/p46/p46.htm SN - 3-931381-55-2 SP - 1(?) EP - 11(?) PB - DGZfP CY - Berlin AN - OPUS4-6897 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Reiche, I. A1 - Berger, Achim A1 - Duval, A. A1 - Görner, Wolf A1 - Guicharnaud, H. A1 - Merchel, Silke A1 - Radtke, Martin A1 - Riederer, J. A1 - Riesemeier, Heinrich A1 - Roth, M. ED - Denker, A. ED - Adriaens, A. ED - Dowsett, M. ED - Giumlia-Mair, A. T1 - Synchrotron radiation and protons on the traces of famous artists - Non-destructive analyses of silverpoint drawings by Albrecht Dürer KW - X-ray spectrometry KW - XRF KW - Röntgenfluoreszenzanalyse KW - RFA KW - Silverpoint drawing KW - Silberstiftzeichnung PY - 2006 SN - 3-8167-7178-5 SP - 91 EP - 101 PB - Fraunhofer-IRB-Verl. CY - Stuttgart AN - OPUS4-14190 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Brücher, M. A1 - von Bohlen, A. A1 - Jacob, P. A1 - Franzke, J. A1 - Radtke, Martin A1 - Reinholz, Uwe A1 - Müller, Bernd R. A1 - Scharf, Oliver A1 - Hergenröder, R. T1 - The charge of solid-liquid interfaces measured by X-ray standing waves and streaming current N2 - Measurements of ion distributions at a charged solid–liquid interface using X-ray standing waves (XSW) are presented. High energy synchrotron radiation (17.48 keV) is used to produce an XSW pattern inside a thin water film on a silicon wafer. The liquid phase is an aqueous solution containing Br and Rb ions. The surface charge is adjusted by titration. Measurements are performed over a pH range from 2.2–9, using the native Si oxide layer and functional (amine) groups as surface charge. The Debye length, indicating the extension of the diffuse layer, could be measured with values varying between 1–4 nm. For functionalized wafers, the pH dependent change from attraction to repulsion of an ion species could be detected, indicating the isoelectric point. In combination with the measurement of the streaming current, the surface charge of the sample could be quantified. KW - Interfacial charge KW - Solid/liquid interfaces KW - Surface analysis KW - Surface functionalization KW - X-ray spectrometry KW - X-ray KW - Standing waves KW - XSW KW - Streaming current KW - Synchrotron radiation PY - 2010 DO - https://doi.org/10.1002/cphc.201000166 SN - 1439-4235 SN - 1439-7641 VL - 11 IS - 10 SP - 2118 EP - 2123 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-22057 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Nikolic, Nela A1 - Dal Co, Alma A1 - Kiviet, Daniel J. A1 - Bergmiller, Tobias A1 - Littmann, Sten A1 - Kuypers, Marcel M. M. A1 - Ackermann, Martin A1 - Schreiber, Frank T1 - Cell-to-cell variation and specialization in sugar metabolism in clonal bacterial populations N2 - While we have good understanding of bacterial metabolism at the population level, we know little about the metabolic behavior of individual cells: do single cells in clonal populations sometimes specialize on different metabolic pathways? Such metabolic specialization could be driven by stochastic gene expression and could provide individual cells with growth benefits of specialization. We measured the degree of phenotypic specialization in two parallel metabolic pathways, the assimilation of glucose and arabinose. We grew Escherichia coli in chemostats, and used isotope-labeled sugars in combination with nanometer-scale secondary ion mass spectrometry and mathematical modeling to quantify sugar assimilation at the single-cell level. We found large variation in metabolic activities between single cells, both in absolute assimilation and in the degree to which individual cells specialize in the assimilation of different sugars. Analysis of transcriptional reporters indicated that this variation was at least partially based on cell-to-cell variation in gene expression. Metabolic differences between cells in clonal populations could potentially reduce metabolic incompatibilities between different pathways, and increase the rate at which parallel reactions can be performed. KW - Metabolism KW - Escherichia coli KW - Phenotypic diversity KW - Phenotypic heterogeneity PY - 2017 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-438873 UR - http://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1007122 DO - https://doi.org/10.1371/journal.pgen.1007122 SN - 1553-7404 VL - 13 IS - 12 SP - e1007122, 1 EP - e1007122, 24 PB - Public Library of Science CY - Cambridge, United Kingdom AN - OPUS4-43887 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rodrigues, M. A1 - Schreiner, M. A1 - Mäder, M. A1 - Melcher, M. A1 - Guerra, M. A1 - Salomon, J. A1 - Radtke, Martin A1 - Alram, M. A1 - Schindel, N. T1 - The hoard of Becin - non-destructive analysis of the silver coins N2 - We report the results of an analytical investigation on 416 silver-copper coins stemming from the Ottoman Empire (end of 16th and beginning of 17th centuries), using synchrotron micro X-ray fluorescence analysis (SRXRF). In the past, analyses had already been conducted with energy dispersive X-ray fluorescence analysis (EDXRF), scanning electron microscopy with energy dispersive X-ray spectrometry (SEM/EDX) and proton induced X-ray emission spectroscopy (PIXE).With this combination of techniques it was possible to confirm the fineness of the coinage as well as to study the provenance of the alloy used for the coins. For the interpretation of the data statistical analysis (principal component analysis—PCA) has been performed. A definite local assignment was explored and significant clustering was obtained regarding the minor and trace elements composing the coin alloys. KW - SRXRF KW - Silber KW - Archaeometrie PY - 2010 DO - https://doi.org/10.1007/s00339-010-5627-y SN - 0947-8396 VL - 99 IS - 2 SP - 351 EP - 356 PB - Springer CY - Berlin AN - OPUS4-23170 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Rodrigues, M. A1 - Schreiner, M. A1 - Melcher, M. A1 - Guerra, M. A1 - Salomon, J. A1 - Radtke, Martin A1 - Alram, M. A1 - Schindel, N. T1 - Analysis of the hoard of Becin using X-ray-based techniques N2 - Four hundred and sixteen silver coins stemming from the Ottoman Empire (16th and 17th centuries) were analyzed to confirm the fineness of the coinage as well as to study the provenance of the alloy used for the coins. As most of the coins showed the typical green patina on their surfaces due to corrosion processes that have led to the depletion of copper in the near surface domains of the silver coins in comparison to their core composition, small samples had to be taken, embedded in synthetic resin, and cross sectioned to investigate the true-heart metal composition. µ-synchrotron micro X-ray fluorescence analysis and µ-proton-induced X-ray emission were applied to determine the silver contents as well as the minor and trace elements. The type of the alloy was investigated as well as if coins minted in different locations demonstrated homogeneous traits concerning the predominant impurities (Au and Bi), which could suggest a common ore. Finally, energy-dispersive microanalysis in a scanning electron microscope was applied to study the homogeneity/heterogeneity of the coins and the presence of surface enrichments and to explain differences between the µ-synchrotron micro X-ray fluorescence analysis and µ-proton-induced X-ray emission measurements concerning the main component. In general, the silver content of the analyzed specimen varies between 90 and 95%. These outcomes have not supported the historical interpretations, which predict that during the period studied, a debasement of approximately 44% of the silver content of the coins should have occurred. KW - SRXRF KW - Silber KW - BAMline PY - 2012 DO - https://doi.org/10.1002/xrs.2415 SN - 0049-8246 VL - 41 IS - 6 SP - 416 EP - 424 PB - Wiley CY - Chichester AN - OPUS4-27723 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -