Zobrazeno 1 - 10
of 26
pro vyhledávání: '"D. S. Popplewell"'
Autor:
William R. Kelly, D. S. Popplewell, Kenneth G. W. Inn, Melvin S. Feiner, Chih-An Huh, P. W. Krey, A. Norris, J. M. Robin Hutchinson, E. Fisenne, Donald R. Percival, Thomas M. Beasley, Robert R. Greenberg, Ernest S. Gladney
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 307:2513-2520
In 1978, the National Bureau of Standards began a program to develop environmental-level natural matrix radionuclide Standard Reference Materials for the evaluation of analytical methods. A customer reported a −15 % difference between their value a
Autor:
R. G. Wilkins, D. S. Popplewell
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 75:815-818
The exchange of [14C] ethylenediamine with various metal-ethylenediamine complexes was studied in aqueous solution. As would be expected from a consideration of the properties of the ions, [Co en3]3+ exchanged very slowly even at 95° C (no exchange
Autor:
D. McCurdy, James J. Filliben, B. Warren, P. Young, Kenneth G. W. Inn, T. H. Bates, K. J. Odell, Masayoshi Yamamoto, J. Harvey, Robert W. Holloway, Simon Jerome, Melvin S. Feiner, P. Germain, C. A. McMahon, Zhongyu Wu, M.J. Woods, I. L. Larsen, J. Handl, Thomas M. Beasley, Ian W. Croudace, S. Morton, Chih-An Huh, Chung-King Liu, P. W. Krey, A. Holms, Zhichao Lin, D. S. Popplewell, B. R. Harvey
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 248:227-231
In 1977, the Low-level Working Group of the International Committee on Radionuclide Metrology met in Boston, MA (USA) to define the characteristics of a new set of environmental radioactivity reference materials. These reference materials were to pro
Autor:
H. Wershofen, J. L. Gascón, Y. Bourlat, M. Magnoni, M.J. Woods, Michael Youngman, D. Andrew, J. Desmond, G. Sutton, P. De Felice, Aldo Fazio, D. S. Popplewell, R. S. Grieve, R. Bojanowski, A. R. Byrne, Dirk Arnold, K. J. Odell, Simon Jerome, I. Adsley, A. S. Holmes, M.T. Crespo, I. Poupaki, M. W. Wakerley, J. Toole, M. Korun
Publikováno v:
Applied Radiation and Isotopes. 49:1295-1300
The characterisation of an intertidal sediment, containing enhanced levels of radioactivity, collected from the Cumbrian coast of the U.K. by the Laboratory of the Government Chemist for the Department of the Environment is described. A wide variety
Autor:
Robert Holloway, D. S. Popplewell, F.J. Schima, P. W. Krey, Zhichao Lin, Barry B. Warren, Trevor H. Bates, Kenneth G. W. Inn, David McCurdy, James Harvey, Peter Young, Walter S. Liggett, M.J. Woods, Chih-An Huh, J. Handl, Andrew Holms, Masayoshi Yamamoto, Kevin J. Odell, Simon Jerome, Melvin S. Feiner, Thomas M. Beasley, I. L. Larsen, P. Germain, Chung-King Liu, Bernard R. Harvey
Publikováno v:
Applied Radiation and Isotopes. 47:967-970
The National Institute of Standards and Technology (NIST), in cooperation with experienced international laboratories, will issue a low-level radioactivity Ocean Sediiment Standard Reference Material (SRM) 4357 in 1996. The Ocean Sediment joins the N
Autor:
D. S. Popplewell
Publikováno v:
Applied Radiation and Isotopes. 46:279-286
Experiments that have been described in the literature are reviewed, with emphasis on the techniques that have been used, rather than a critical appraisal of the results obtained.
Publikováno v:
Science of The Total Environment. 145:1-6
Mixtures of Np, Pu and Am were administered to primates (C. jacchus) by gastric intubation to measure their fractional gastrointestinal absorption (f1 values). The values obtained were about 2 x 10(-3) and 1 x 10(-3), respectively, for Np and Pu admi
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 172:299-304
The Standard Reference Material 4351 from the National Institute of Standards and Technology is acknowledged to be inhomogeneous. The value of a single analysis for239Pu+240Pu could lie within a wide range, but the accuracy of the analysis can be cor
Publikováno v:
The Science of The Total Environment. 105:211-231
Seaborne sediments deposited in the estuaries of the Esk, Duddon, Leven and Kent have been analysed for fission products and actinides discharged in waste from the Sellafield processing works in west Cumbria, and the values compared with the generall
Autor:
Kenneth G. W. Inn, R. L. Kathren, Hugh D. Livingston, Herbert L. Volchok, Melvin S. Feiner, R. A. Wessman, D. R. Percival, D. S. Popplewell, Walter S. Liggett, Vaughan T. Bowen, J.F. McInroy, Hisao Kawamura
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 138:219-229
An international laboratory intercomparison of actinides in human tissues was organized by the United States Transuranium Registry and the National Institute of Standards and Technology. Five laboratories from the United States, United Kingdom, and J