Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Rob M Wessel"'
Autor:
J I T van Wijk, Martin J. T. Milton, Stefan Persijn, Rob M Wessel, Gergely Vargha, A M H van der Veen, C. Boissière, Christophe Sutour, Bernhard Niederhauser, Tatiana Macé, J. Couette, Alice Harling, Ian Uprichard, H. P. Haerri, R. J. Oudwater, Michael Maiwald, Dirk Tuma
Publikováno v:
Metrologia. 50:08023-08023
This supplementary comparison (EURAMET.QM-S8) concerns the purity analysis of nitrogen as used in reference gas mixture preparation. This project was carried out without adding impurities to the gas used for this comparison, and is therefore more rep
Autor:
Jin Chun Woo, Napo Ntsasa, Zuzana Durisova, Angelique Botha, M L Downey, Han Qiao, Andreia de Lima Fioravante, Jin Seog Kim, C Brookes, Miroslava Valkova, Tatiana Macé, Byung Moon Kim, Gergely Vargha, Shenji Uehara, Lyn Gameson, Jerry Rhoderick, Martin J. T. Milton, Rob M Wessel, Denise Cristine Gonçalves Sobrinho, Frank Guenther, Leonid Konopelko, Olga V. Fatina, Cristiane Rodrigues Augusto, Florbela Dias, Yuri Kustikov, James Tshilongo, Andrew S. Brown, Judit Fükö
Publikováno v:
Metrologia. 50:08025-08025
This report presents the results of CCQM-K93, a key comparison between 13 National Measurement Institutes (NMIs), which tested the capability of the NMIs to prepare standard gas mixtures of ethanol at a nominal amount fraction of 120 µmol/mol in nit
Autor:
Martin J. T. Milton, Rob M Wessel, V V Pankratov, Leonid Konopelko, Gerard Nieuwenkamp, Miroslava Valkova, M N Pir, A V Meshkov, Judit Fükö, L V Ehvalov, A M H van der Veen, Y A Kustikov, Viliam Patoprsty, Nagyné Szilágyi, Gergely Vargha, Jin-Chun Woo, A U Timofeev, Paul R Ziel, Qiao Han, Dirk Tuma, Andrew S. Brown, Tamás Büki, T A Kuzmina, M L Downey, E V Nazarov, T. A. Popova
Publikováno v:
Metrologia. 49:08003-08003
Refinery gas is a complex mixture of hydrocarbons and non-combustible gases (e.g., carbon monoxide, carbon dioxide, nitrogen, helium). It is obtained as part of the refining and conversion of crude oil. This key comparison aims to evaluate the measur
Autor:
Gergely Vargha, Teresa Fernández, Gert Schulz, Jari Walden, Damian Smeulders, Alice Harling, Sergio Ramírez, Edgar Flores, Miroslava Valkova, Anka Kohl, Philippe Moussay, Napo Ntsasa, William J Thorn, Gerard Nieuwenkamp, Dirk Tuma, Franklin R. Guenther, Tatiana Macé, Joële Viallon, Robert Wielgosz, Martin J. T. Milton, Oh Sang-Hyub, Rob M Wessel, Cedric Couret, Uehara Shinji, E V Gromova, Michela Sega, Leonid Konopelko, Faraz Idrees, Andrés Rojo, James Tshilongo, Viliam Stovcik, Han Qiao
Publikováno v:
Metrologia. 49:08005-08005
There is a high international priority attached to activities which reduce NOx in the atmosphere. The current level of permitted emissions is typically between 50 µmol/mol and 100 µmol/mol, but lower values are expected in the future. Currently, am
Autor:
Damian Smeulders, Gert Schulz, M A Maltsev, R. J. Oudwater, Hans-Joachim Heine, V V Pankratov, Jin-Chun Woo, Mellisa Janse van Rensburg, I I Vasserman, Janneke van Wijk, Yong Du Kim, T. A. Popova, Y A Kustikov, Takuro Watanabe, Nompumelelo Leshabane, Martin J. T. Milton, Frank Guenther, Han Qiao, Rob M Wessel, Leonid Konopelko, C. Boissière, S V Zavyalov, Kenji Kato, M N Pir, Angelique Botha, Stefan Persijn, Hyun Kil Bae, George C. Rhoderick, Alice Harling, Napo Ntsasa, Gergely Vargha, Walter R. Miller, James Tshilongo, Sang Hyup Oh, Jin Seog Kim
Publikováno v:
Metrologia. 49:08001-08001
This key comparison was performed to demonstrate the capability of NMIs to analyse the purity of methane for use as a source gas in the preparation of standard gas mixtures. This capability is an essential requirement for the preparation of accurate
Autor:
Martin J. T. Milton, Rob M Wessel, Dariusz Ciecior, Gerald D. Mitchell, Miroslava Valkova, Tshepiso Mphamo, M V Pavlov, Uehara Shinji, Peter van Otterloo, E V Gromova, Ian Uprichard, Cristiane Rodrigues Augusto, Manuel de Jesús Avila Salas, James Tshilongo, Jorge Koelliker Delgado, Tatiana Macé, C Brookes, V V Pankratov, Y A Kustikov, Oh Sang-Hyub, D V Rumyantsev, Leonid Konopelko, Florbela Dias, Francisco Rangel Murillo, Valnei Smarçaro da Cunha, Alejandro Pérez Castorena, Angelique Botha, Christophe Sutour, Han Qiao, Tamás Büki, Andreia de Lima Fioravante, Claudia Ribeiro, Franklin R. Guenther, Prabha Johri, Victor M Serrano Caballero, David Mogale, Gergely Vargha, Michael E. Kelley, Adriaan M H van der Veen, Napo Ntsasa
Publikováno v:
Metrologia. 48:08015-08015
The key comparison CCQM-K76 was designed to test the capabilities of the participants to measure and certify sulfur dioxide in nitrogen, and to provide supporting evidence for the CMCs of these institutes for sulfur dioxide. Also, as sulfur dioxide i
Publikováno v:
Metrologia. 48:08009-08009
Ethanol measurements in human breath are important for the implementation of legal metrology related to the driving under influence legislation. Measurements are typically performed to calibrate breath testers in accordance with OIML Recommendation R
Autor:
Qiao Han, Jeongsoon Lee, Jin Seog Kim, Frank Guenther, Rob M Wessel, George C. Rhoderick, Leonid Konopelko, Kenji Kato, Jinbok Lee, Nobuyuki Aoki, Dongmin Moon, Brad Hall
Publikováno v:
Metrologia. 48:08004-08004
Nitrous oxide (N2O) is one of six greenhouse gases that are regulated by the Kyoto Protocol and has a Global Warming Potential (GWP) that is 296 times that of carbon dioxide. Global levels of nitrous oxide have increased at a rate of 0.25%/yr (0.8 pp
Autor:
Bernhard Niederhauser, Gergely Vargha, Bunthoon Laongsri, Angelique Botha, Damian Smeulders, Alejandro Pérez Castorena, Teresa Fernández, James Tshilongo, Napo Ntsasa, L A Konopelko, Claudia Ribeiro, Miroslava Valkova, Nobuhiro Matsumoto, Ratirat Sinweeruthai, Y A Kustikov, Francisco Rangel Murillo, Michel Gerboles, Prabhat K. Gupta, M Maruyama, Dariusz Cieciora, Cristiane Rodrigues Augusto, V V Pankratov, E V Gromova, Franklin R. Guenther, C V Zavyalov, Nompumelelo Leshabane, Tatiana Macé, Valnei Smarçao da Cunha, Volker Stummer, Andreas Wolf, Jari Walden, Ian Uprichard, Florbela Dias, Marina Froehlich, Jeongsoon Lee, Prabha Johri, Kenji Kato, I I Vasserman, Zeyi Zhou, Gonçalo Baptista, Andrés Rojo, Stanislav Musil, Rob M Wessel, Andreas Ackermann, Walter R. Miller, Han Qiao, Matej Kapus, Mellisa Janse van Rensburg, Sisko Laurila, Victor M Serrano Caballero, Hans-Joachim Heine
Publikováno v:
Metrologia. 47:08008-08008
The first key comparison on carbon monoxide (CO) in nitrogen dates back to 1992 (CCQM-K1a). It was one of the first types of gas mixtures that were used in an international key comparison. Since then, numerous national metrology institutes (NMIs) hav
Autor:
Y A Kustikov, Gergely Vargha, Victor M Serrano Caballero, Adriaan M. H. van der Veen, V V Pankratov, Takuro Watanabe, Frank Guenther, Leonid Konopelko, Kenji Kato, O V Efremova, Francisco Rangel Murillo, Damian Smeulders, Carlos Ramírez Nambo, Martin J. T. Milton, Alejandro Pérez Castorena, T A Kuzmina, Rob M Wessel, T. A. Popova, Paul R Ziel, M A Kovrizhnih, Yong Doo Kim, Ed W B de Leer, Hima Chander, Jin Seog Kim, Jin-Chun Woo, Manuel de Jesús Avila Salas, Laurie Besley, Hyun Kil Bae, George C. Rhoderick
Publikováno v:
Metrologia. 47:08019-08019
The aim of this comparison is to evaluate the gravimetry and purity verification of gas mixtures prepared by introducing a liquid into a gas cylinder. This type of preparation is well known from, e.g., ethanol in nitrogen/air (CCQM-K4), and n-hexane