TY - JOUR A1 - Ma, L. A1 - Feng, L. A1 - Hioki, A. A1 - Cho, K.H. A1 - Vogl, Jochen A1 - Berger, Achim A1 - Turk, G. A1 - Macleod, S. A1 - Labarraque, G. A1 - Tong, W.F. A1 - Schiel, D. A1 - Yafa, C. A1 - Valiente, L. A1 - Konopelko, L.A. A1 - Quetel, C. A1 - Vermaercke, P. A1 - Manzano, J.V.L. A1 - Linsky, M. A1 - Cortés, E. A1 - Tangpitayakul, S. A1 - Plangsangmas, L. A1 - Bergamaschi, L. A1 - Hearn, R. T1 - International comparison of the determination of the mass fraction of cadmium, chromium, mercury and lead in polypropylene: the Comité Consultatif pour la quantité de matière pilot study CCQM-P106 KW - Cadmium KW - Chromium KW - Mercury KW - Lead KW - Polypropylene KW - CCQM PY - 2010 DO - https://doi.org/10.1007/s00769-009-0574-z SN - 0949-1775 SN - 1432-0517 VL - 15 IS - 1 SP - 39 EP - 44 PB - Springer CY - Berlin AN - OPUS4-20787 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Knabe, C. A1 - Gildenhaar, Renate A1 - Berger, R. A1 - Ostapowicz, W. A1 - Fitzner, R. A1 - Radlanski, R. A1 - Gross, U. A1 - Siebert, G. T1 - In vitro examination of novel calcium phosphates using osteogenic cultures T2 - 5th World Biomaterials Congress CY - Toronto, Canada DA - 1996-05-29 KW - In-vitro Untersuchung KW - Kalzium-Phosphat KW - Zahnersatz KW - Knochen PY - 1996 VL - 1 SP - 890 CY - Toronto AN - OPUS4-672 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Driessens, F. C. M. A1 - Boltong, M. G. A1 - Fernández, E. A1 - Ginebra, M. P. A1 - Planell, J. A. A1 - Verbeeck, R. M. H. A1 - De Maeyer, E. A. P. A1 - Berger, Georg T1 - Amorphous calcium phosphate cements T2 - 5th World Biomaterials Congress CY - Toronto, Canada DA - 1996-05-29 KW - Kalzium Phosphat Zement, amorph. PY - 1996 VL - 2 SP - 346 CY - Toronto AN - OPUS4-673 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Berger, Georg A1 - Steinhauser, E. A1 - Willmann, G. A1 - Liesner, C. A1 - Willems, U. A1 - Grössl, H. T1 - Biokompatible Werkstoffe - Ersatzteile für Menschen T2 - Podiumsdiskussion zur Materialica 2000 CY - München, Deutschland DA - 2000-09-26 PY - 2000 AN - OPUS4-918 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Berger, Georg A1 - Ploska, Ute A1 - Willmann, G. T1 - Hydroxyapatite's Solubility May Cause Loosening of Coated Implants KW - pH Value KW - Solubility KW - Coated Implants KW - Hydroxyapatite PY - 2001 SN - 1013-9826 VL - 192-195 SP - 111 EP - 114 PB - Trans Tech Publ. CY - Aedermannsdorf AN - OPUS4-1045 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Driessens, F. C. M. A1 - De Maeyer, E. A. P. A1 - Fernández, E. A1 - Boltong, M. G. A1 - Berger, Georg A1 - Verbeeck, R. M. H. A1 - Ginebra, M. P. A1 - Planell, J. A. T1 - Amorphous calcium phosphate cements and their transformation into calcium deficient hydroxyapatite KW - Zement KW - Kalzium-Phosphat PY - 1996 VL - 9 SP - 231 EP - 234 AN - OPUS4-704 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Berger, Georg A1 - Ploska, Ute A1 - Willmann, G. T1 - Auflösung von Hydroxylapatit-Beschichtung durch Entzündung PY - 2001 SN - 1616-0177 SN - 0011-8656 VL - 2 IS - 2-3 SP - - PB - Verl. Neuer Merkur CY - München AN - OPUS4-1142 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Berger, L.-M. A1 - Woydt, Mathias A1 - Keller, H. A1 - Zimmermann, S. A1 - Schwier, G. A1 - Enzl, R. A1 - Thiele, S. T1 - Tribological behaviour of HVOF-sprayed Cr3C2-NiCr and TiC-based coatings under high temperature dry sliding conditions N2 - In the current study, the tribological properties of TiC-based coatings paired with polycrystalline alumina under unlubricated sliding conditions were investigated in order to demonstrate the technological and engineering potential of such coatings. (Ti,Mo)(C,N)-Co coatings were prepared from an agglomerated and sintered spray powder by HVOF spraying using JP-5000 equipment. Cr3C2-NiCr coatings were studied for comparison. Sliding wear tests were performed over the temperature range from 23°C to 800°C with sliding speeds in the range 0.3-3 m/s, a wear distance of 5000 m and a normal force of 10 N. Wear rates of coatings and sintered alumina counterparts were measured separately. Compared with Cr3C2-NiCr coatings, (Ti,Mo)(C,N)-Co coatings showed significantly lower total wear rates, corresponding to those found in the region of mixed/boundary lubrication. With few exceptions, the coefficients of friction were found to be lower for (Ti,Mo)(C,N)-Co coatings than for Cr3C2-NiCr coatings. After tests were performed, the coating microstructures were studied by optical microscopy and SEM. The oxide scales formed on the coating surfaces were investigated by SEM and X-ray diffraction. Comparison of the total wear rates of the couples consisting of sintered alumina and a (Ti,Mo)(C,N)-Co coating with those of other alumina-ceramic and hardmetal-hard metal tribological systems demonstrates the immense potential of TiC-based coatings for sliding wear applications. T2 - International Thermal Spray Conference & Exposition 2004 CY - Osaka, Japan DA - 2004-05-10 PY - 2004 SN - 3-87155-792-7 SP - 1(?) EP - 10(?) PB - DVS-Verl. CY - Düsseldorf AN - OPUS4-5123 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Berger, Achim A1 - Alber, D. A1 - Bukalis, G. T1 - Determination of cobalt in nickel in the sub-ppm level with cold neutrons KW - Neutronenaktivierungsanalyse KW - Neutronenstrahl KW - Referenzmaterialien PY - 2007 SN - 0236-5731 SN - 1588-2780 SN - 1417-2097 VL - 271 IS - 1 SP - 251 EP - 253 PB - Elsevier Sequoia CY - Lausanne AN - OPUS4-14568 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Görner, Wolf A1 - Alber, D. A1 - Berger, Achim A1 - Haase, Oskar A1 - Monse, G. A1 - Segebade, Christian T1 - BEAMGAA - A chance for high precision analysis of big samples N2 - In activation analysis of traces in small samples, the non-equivalence of the activating radiation doses of sample and calibration material gives rise to sometimes tolerable systematic errors. Conversely, analysis of major components usually demands high trueness and precision. To meet this, beam geometry activation analysis (BEAMGAA) procedures have been developed for instrumental photon (IPAA) and neutron activation analysis (INAA) in which the activating neutron/photon beam exhibits broad, flat-topped characteristics. This results in a very low lateral activating flux gradient compared to known radiation facilities, however, at significantly lower flux density. The axial flux gradient can be accounted for by a monitor-sample-monitor assembly. As a first approach, major components were determined in high purity substances as well as selenium in a cattle fodder additive. T2 - 6th International Conference "Methods and Applications of Radioanalytical Chemistry" CY - Kailua-Kona, HI, United States of America DA - 2003-04-07 KW - Beam geometry activation analysis KW - Flux gradients KW - Measurement regime KW - Representativity KW - Big samples PY - 2005 DO - https://doi.org/10.1007/s10967-005-0660-6 SN - 0236-5731 SN - 1588-2780 SN - 1417-2097 VL - 263 IS - 3 SP - 791 EP - 796 PB - Elsevier Sequoia CY - Lausanne AN - OPUS4-6907 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -