TY - JOUR A1 - Westwood, S. A1 - Josephs, R. D. A1 - Choteau, T. A1 - Martos, G. A1 - Wielgosz, R. A1 - Sarzuri, Y. A. A1 - Mendoza, E. A1 - do Rego, E. C. P. A1 - Violante, F. G. M. A1 - da Silva Souza, W. A1 - de Carvalho, L. J. A1 - Fernandes, J. L. N. A1 - Bates, J. A1 - Rajotte, I. A1 - Melanson, J. E. A1 - Li, H. A1 - Guo, Z. A1 - Su, F. A1 - Wang, S. A1 - Huang, T. A1 - Lalerle, B. A1 - Gantois, F. A1 - Piechotta, Christian A1 - Philipp, Rosemarie A1 - Kaminski, Katja A1 - Klyk-Seitz, Urzsula-Anna A1 - Giannikopoulou, P. A1 - Skotidaki, E. A1 - Kakoulides, E. A1 - Pui-Kwan, C. A1 - Kuroe, M. A1 - Itoh, N. A1 - Calderón, M. A. A. A1 - Contreras, L. R. A1 - Osuna, M. A. A1 - Alrashed, M. A1 - Ting, L. A1 - Mei, G. E. A1 - Juan, W. A1 - Sze, C. P. A1 - Lin, T. T. A1 - Quinn, L. A1 - Swiegelaar, C. A1 - Fernandes-Whaley, M. A1 - Ahn, S. A1 - Chaiphet, T. A1 - Sudsiri, N. A1 - Bellazreg, W. A1 - Bilsel, M. A1 - Colombo, G. T1 - Key comparison CCQM-K78.b - non-polar analytes in organic solvent: methoxychlor and trifluralin in acetonitrile N2 - The CCQM-K78.b key comparison was coordinated by the Bureau International des Poids et Mesures (BIPM) on behalf of the CCQM Organic Analysis Working Group (OAWG) of the 'Comité Consultatif pour la Quantité de Matière' (CCQM), for National Measurement Institutes (NMIs) and Designated Institutes (DIs) providing measurement services in organic analysis under the 'Comité International des Poids et Mesures' (CIPM) Mutual Recognition Arrangement (MRA). This key comparison was conducted as a 'Track A' comparison within the OAWG's 10-year strategic plan. The goal of CCQM-K78.b was to underpin capabilities for the value assignment of calibration solutions containing low polarity/non-polar organic analytes in organic solvents. The selected model system consisted of a two-component pesticide solution in acetonitrile, comprising methoxychlor and trifluralin. Participants were tasked with assigning the mass fractions, in units of μg/g, of methoxychlor and trifluralin in acetonitrile solution. The mass fraction levels and analytical challenges of the selected analytes were representative of those encountered for calibration solutions of non-polar organic analytes. Participation in CCQM-K78.b allowed for the benchmarking of capabilities for assigning the mass fraction of non-polar organic compounds (pKow < -2) in solution, at mass fractions above 5 μg/g, in an organic solvent. Additionally, the comparison assessed the capabilities for the quantitative assignment of thermally labile compounds. Participants were provided by the BIPM with ampoules containing methoxychlor and trifluralin in acetonitrile. Each participant reported the mass fraction content of each analyte in μg/g. All participants ensured the metrological traceability of their results through the use of a Primary Reference Material (PRM), which was used to prepare a primary calibrator solution for each analyte using a gravimetric procedure. The twenty participating institutes primarily used analysis procedures based on GC-MS, -IDMS, -MS/MS, -ECD, and -FID, with some participants also using LC-UV for the value assignment. The analysis of methoxychlor and trifluralin in acetonitrile solution presented several challenges, including the thermal stability of the analytes under selected analytical techniques, control of solvent volatility, and considerable variation in some results using MS-based quantification methods. The mass fraction assignments for methoxychlor and trifluralin, consistent with the key comparison reference values (KCRVs), were achieved with associated relative standard uncertainties of (0.38 - 2.9) % for methoxychlor and (0.35 - 2.5) % for trifluralin. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA). KW - Methoxychlor KW - Trifluralin KW - CCQM KW - Key comparison PY - 2025 DO - https://doi.org/10.1088/0026-1394/62/1A/08010 SN - 0026-1394 VL - 62 IS - 1A SP - 1 EP - 37 PB - IOP Publishing AN - OPUS4-64691 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Bien, J. A1 - Kaminski, T. A1 - Trela, Christiane ED - Hyun-Moo Koh, ED - Dan M. Frangopol, T1 - Numerical analysis of old masonry bridges supported by field tests T2 - Bridge Maintenance, Safety, Management, Health Monitoring and Informatics - IABMAS 2008 CY - Seoul, South Korea DA - 2008-07-13 PY - 2008 SN - 978-0-415-46844-2 SP - 2384 EP - 2391 PB - CRC Press CY - Boca Raton AN - OPUS4-17749 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Kaminski, T. A1 - Trela, Christiane ED - Jan Bien, ED - Lennart Elfgren, ED - Jan Olofsson, T1 - Advanced methods of testing and analysis of old masonry bridge in Olesnica T2 - International Conference "Sustainable Bridges - Assessment for Future Traffic Demands and Longer Lives" CY - Wroclaw, Poland DA - 2007-10-10 PY - 2007 SN - 978-83-7125-161-0 SP - 461 EP - 472 PB - Dolnoslaskie Wydawnictwo Edukacyjne CY - Wroclaw, Poland AN - OPUS4-16121 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Helmerich, Rosemarie A1 - Niederleithinger, Ernst A1 - Trela, Christiane A1 - Bien, J. A1 - Kaminski, T. A1 - Bernardini´, G. T1 - Multi-tool inspection and numerical of an old masonry arch bridge N2 - Complex special inspection of an old masonry arch bridge according to the Guideline on Inspection and Condition Assessment of Railway Bridges and numerical analysis of the structure are presented. The guideline summarises recommendations for the step-by-step investigation of railway bridges applying enhanced methods developed during the EU-funded project Sustainable Bridges. For the investigation of the arch barrel, the ballast parameters and the inner structure of the backfill behind the arch barrel a number of various advanced non-destructive and minor-destructive testing methods were applied. Deformation of the structure during load tests was measured using three independent measuring systems: laser vibrometer, LVDT and microwave radar. Results of calculations performed with 2D and 3D models based on FEM are compared with the field load tests. Sensitivity of the ultimate load of the structure to investigated parameters is studied in FE model. Some general conclusions according to methods of testing and modelling of masonry arch bridges are presented and discussed. KW - Masonry bridges KW - Non-destructive testing KW - Bridge inspection KW - Finite element method PY - 2012 SN - 1573-2479 VL - 8 IS - 1 SP - 27 EP - 39 PB - Taylor & Francis CY - London [u.a.] AN - OPUS4-27425 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Helmerich, Rosemarie A1 - Niederleithinger, Ernst A1 - Trela, Christiane A1 - Bien, J. A1 - Kaminski, T. A1 - Bernardini, G. T1 - Multi-tool inspection and numerical analysis of an old masonry arch bridge N2 - Complex special inspection of an old masonry arch bridge according to the Guideline on Inspection and Condition Assessment of Railway Bridges and numerical analysis of the structure are presented. The guideline summarises recommendations for the step-by-step investigation of railway bridges applying enhanced methods developed during the EU-funded project Sustainable Bridges. For the investigation of the arch barrel, the ballast parameters and the inner structure of the backfill behind the arch barrel a number of various advanced non-destructive and minor-destructive testing methods were applied. Deformation of the structure during load tests was measured using three independent measuring systems: laser vibrometer, LVDT and microwave radar. Results of calculations performed with 2D and 3D models based on FEM are compared with the field load tests. Sensitivity of the ultimate load of the structure to investigated parameters is studied in FE model. Some general conclusions according to methods of testing and modelling of masonry arch bridges are presented and discussed. KW - Masonry bridges KW - Non-destructive testing KW - Bridge inspection KW - Finite element method PY - 2010 DO - https://doi.org/10.1080/15732471003645666 SN - 1573-2479 SN - 1744-8980 IS - NSIE_A_465075 SP - 1 EP - 13 PB - Taylor & Francis CY - London AN - OPUS4-22838 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Nickel, C. A1 - Angelstorf, J. A1 - Bienert, Ralf A1 - Burkart, C. A1 - Gabsch, S. A1 - Giebner, S. A1 - Haase, A. A1 - Hellack, B. A1 - Hollert, H. A1 - Hund-Rinke, K. A1 - Jungmann, D. A1 - Kaminski, H. A1 - Luch, A. A1 - Maes, H.M. A1 - Nogowski, A. A1 - Oetken, M. A1 - Schaeffer, A. A1 - Schiwy, A. A1 - Schlich, K. A1 - Stintz, M. A1 - von der Kammer, F. A1 - Kuhlbusch, T.A.J. T1 - Dynamic light-scattering measurement comparability of nanomaterial suspensions N2 - Increased use of nanomaterials in everyday products leads to their environmental release and therefore, the information need on their fate and behaviour. Nanomaterials have to be suspended with high repeatability and comparability for studies on environmental effects. They also have to be well characterised with a focus on the state of agglomeration and particle size distribution. Dynamic light-scattering (DLS) is a common technique used for these measurements. If suspensions are prepared in different laboratories, then concern has risen about the comparability of the measured results, especially when different DLS instruments are used. Therefore, for quality assurance, a round-robin test was conducted to assess the comparability of different DLS instruments and a dispersion protocol in ten independent laboratories. Polystyrene and TiO2 were chosen as test (nano)materials. For the comparability of the DLS instruments, the average sizes of the PSL and a stabilised TiO2 suspension were measured. The measured average hydrodynamic diameter shows an overall good inter-laboratory comparability. For the PSL suspension, an average hydrodynamic diameter of 201 ± 13 nm and for the TiO2 suspension an average diameter of 224 ± 24 nm were detected. For the TiO2 suspension that was prepared at each laboratory following an established suspension preparation protocol, an average hydrodynamic diameter of 211 ± 11 nm was detected. The measured average particle size (mode) increased up to 284 nm with a high standard deviation of 119 nm if the preparation protocol could not established and different procedures or different equipment were employed. This study shows that no significant differences between the employed DLS instrument types were determined. It was also shown that comparable measurements and suspension preparation could be achieved if well-defined suspension preparation protocols and comparable equipment can be used. KW - Comparison measurement KW - Dynamic light scattering KW - Nanomaterial suspension KW - Standard operation procedure KW - Instrumentation PY - 2014 DO - https://doi.org/10.1007/s11051-014-2260-2 SN - 1388-0764 SN - 1572-896X VL - 16 SP - 2260-1 EP - 2260-12 PB - Kluwer CY - Dordrecht AN - OPUS4-30193 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -