Zobrazeno 1 - 10
of 200
pro vyhledávání: '"R E, Steiner"'
Autor:
K. J. Mathew, Ross W. Williams, Joanna S. Denton, Mariam R. Thomas, Floyd E. Stanley, Tara Mastren, Adrian Nicholl, Andrew J. Gaunt, Keller Ra, Tashi Parsons-Davis, Katherine Garduno, Amy M. Gaffney, William S. Kinman, Josh Wimpenny, Theresa M. Kayzar-Boggs, Klaus Mayer, James Brent Fulwyler, R. E. Steiner, Zsolt Varga, Dana Labotka, Allison Wende, Joel R. Maassen, Jung Rim, Maria Wallenius, Richard A. Torres, Elmer Lujan, Lav Tandon, Kerri C. Treinen, Iain May, John M. Rolison, Donivan R. Porterfield, Chelsea Ottenfeld, J. D. Inglis
Publikováno v:
Analytical chemistry. 91(18)
An intercomparison of the radio-chronometric ages of four distinct plutonium-certified reference materials varying in chemical form, isotopic composition, and period of production are presented. The cross-comparison of the different 234U/238Pu, 235U/
Autor:
Chloë E. Bonamici, Ross W. Williams, Z. Varga, R. E. Steiner, Floyd E. Stanley, Khalil J. Spencer, Ian D. Hutcheon, Amélie Hubert, F. Pointurier, Michael J. Kristo, Lav Tandon, Klaus Mayer, William S. Kinman
Publikováno v:
Applied Radiation and Isotopes. 102:81-86
The results of a joint effort by expert nuclear forensic laboratories in the area of age dating of uranium, i.e. the elapsed time since the last chemical purification of the material are presented and discussed. Completely separated uranium materials
Autor:
Matthew Douglas, Stephan Vogt, Steven L. Petersen, Donna Beals, G. Brooks, James R. Cadieux, J. LaRosa, Brad D. Patton, Kenneth G. W. Inn, Debra A. Bostick, S. Nour, Ross W. Williams, R. E. Steiner, Steve LaMont, Gregory C. Eiden, Greg Hall, Steve Goldberg
Publikováno v:
Applied Radiation and Isotopes. 67:667-671
For more than 20 years, countries and their agencies which monitor discharge sites and storage facilities have relied on the National Institute of Standards and Technology (NIST) Standard Reference Material (SRM) 4355 Peruvian Soil reference material
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 276:499-504
In 1944 Los Alamos National Laboratory (LANL) instituted a program for the collection and analyses of urine samples from individuals working with plutonium. This program has operated continuously for over 60 years. During that time the plutonium bioa
Autor:
Laurie F. Walker, Rodney J. McCabe, David H. Beddingfield, Cris L. Lewis, Brian M. Patterson, S.E. Garner, D. Gallimore, S. L. Mecklenburg, J. R. FitzPatrick, R. Gritzo, J. Barnes, Amy Wong, S. Meyers, Christopher G. Worley, R. A. Pereyra, Velma M Montoya, Daniel S. Schwartz, D. Langner, George J. Havrilla, Mark Scott, Diana L. Decker, R. E. Steiner, E. P. Hastings, Lav Tandon, Vahid Majidi, Christy E. Ruggiero, David J. Mercer, Khalil J. Spencer, H. M. Volz, D. Rademacher, Stephen P. LaMont, T. Hahn, R. Villarreal, J. Banar, Kevin J. Kuhn, Patrick T. Martinez, J. Poths, Donivan R. Porterfield, J. Dyke, B. Johnson, D. Farr
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 276:467-473
The goal of nuclear forensics is to establish an unambiguous link between illicitly trafficked nuclear material and its origin. The Los Alamos National Laboratory (LANL) Nuclear Materials Signatures Program has implemented a graded “conduct of oper
Autor:
J. M. Rankin, G. F. Payne, Stephen P. LaMont, A. J. Denton, S. B. Ortiz, Michael K. Schultz, R. E. Steiner, N. E. Bores
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 276:513-518
The Intercomparison Studies Program (ISP) at the Oak Ridge National Laboratory (ORNL, Oak Ridge, TN, USA) provides natural-matrix urine quality-assurance/quality-control (QA/QC) samples to radiobioassay analysis laboratories. In 2003, a single labora
Autor:
D. W. Efurd, W. M. Findley, Gregory Hall, James R. Cadieux, R. E. Steiner, Stephen P. LaMont, T. R. LaBone, C. R. Shick
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 269:271-277
The lung dissolution rates for PuO2 were determined using a 100 day in vitro experiment. A very small amount of the PuO2 rapidly dissolved with a half-time of approximately 10 days, while the majority of the material (>99%) dissolved with a half-time
Autor:
S. E. Wagner, A. A. Marchetti, Kenneth G. W. Inn, Terry F. Hamilton, R Bell Iii, R. E. Steiner, Zhichao Lin, D. McCurdy, Thomas A. Brown, C. Duffy, D. W. Efurd
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 263:447-455
As a follow up to the initial 1998 intercomparison study, a second study was initiated in 2001 as part of the ongoing evaluation of the capabilities of various ultra-sensitive methods to analyze 239Pu in urine samples. The initial study1 was sponsore
Autor:
R. E. Steiner, S. Boone, S. E. Wagner, D. W. Efurd, P. C. Lindahl, F. R. Roensch, D. L. Kottmann, K. M. Israel, D. Lewis, N. L. Koski, J. W. Chamberlin, C. Duffy
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 248:423-429
Utilization of thermal ionization mass spectrometry as a routine analytical service provided to the Los Alamos National Laboratory Bioassay Program has evolved significantly since its implementation just over three years ago. Converting this unique r
Publikováno v:
Applied Spectroscopy. 53:65-73
Tetrafluoromethane (CF4, 1.01% by weight) was added to the argon support gas of a hollow cathode glow discharge to investigate the analytical utility of etch atomization. When a conducting copper cathode was analyzed, the sputtering rate (as measured