Walter S. Liggett
National Institute of Standards and Technology
21 Papers
97 Citations
Walter S. Liggett is an academic researcher from National Institute of Standards and Technology. The author has contributed to research in topics: Indentation hardness & Rockwell scale. The author has an hindex of 8, co-authored 21 publications.
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Papers
The National Bureau of Standards Rocky Flats Soil standard reference material
TL;DR: In this article, a sample was found to contain an average of approximately 1.8 "hot" (239+240Pu) particles per bottle of 90 g of soil and a statistical analysis was performed to determine that the homogeneity of the material excluding hot particles is satisfactory.
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Capability in Rockwell C Scale Hardness
TL;DR: Improved handling of the hardness variation across test-block surfaces is introduced, which leads to understanding of mechanisms and thus to guidance on system upgrades if these are necessary.
Low-level radioactivity ocean sediment standard reference material
Kenneth G. W. Inn,Kenneth G. W. Inn,Zhichao Lin,Zhichao Lin,Walter S. Liggett,F.J. Schima,P. W. Krey,Melvin S. Feiner,Chung-King Liu,Robert Holloway,James Harvey,I. L. Larsen,Thomas M. Beasley,Thomas M. Beasley,Chih-An Huh,David McCurdy,P. Germain,Masayoshi Yamamoto,J. Handl,D. S. Popplewell,M.J. Woods,Simon Jerome,Trevor H. Bates,Andrew Holms,Bernard R. Harvey,Kevin J. Odell,Barry B. Warren,Peter Young +27 more
TL;DR: The Ocean Sediment joins the NIST suite of six other natural matrix materials for low-level radioactivity standard reference materials (SRM 4357) as discussed by the authors, which have already been used to develop radiochemical procedures.
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Statistical assessment of subsampling procedures
TL;DR: In this paper, the authors used the gamma distribution to model the normal distribution and a distribution that models the occurrence of outliers to test for deviations from independence and normality and, if deviations are found, should model the observed distribution.
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