Math Programs & Projects | |
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radioactivity_srm
Last Updated Date: 07/24/2012 The Standard Reference Materials Program of the National Institute of Standards and Technology (NIST) provides science, industry, and government … more
ANSI N42.42 Standard
Last Updated Date: 07/19/2012 The purpose of the N42 data format is to facilitate manufacturer-independent transfer of information from radiation measurement instruments for … more
Computational Biology: Comarison of Cell Image Segmentation Algorithms
Last Updated Date: 07/10/2012 With the advent of automated data acquisition systems in conjunction with on-line imaging devices, the biological researcher is potentially … more
Absolute Ag108 Characterization Based on Gamma-Gamma Coincident Detection by Two Nai (TI) Detectors
Last Updated Date: 06/27/2012 A two-dimensional analysis of three coincident gamma-rays in 108 Ag m decay, detected by two NaI(Tl) scintillation detectors, allows a direct … more
Quantification of the Alpha Wall Effect in Liquid Scintillation Counting
Last Updated Date: 06/27/2012 A long-standing uncertainty in liquid scintillation (LS) counting has been the possible loss of counting efficiency. more
Primary Radioactivity Standardization of Ni-63
Last Updated Date: 06/27/2012 Ni-63 is of considerable interest and importance in radionuclidic metrology as well as for radiation protection surveillance around nuclear … more
Components of Variance in Liquid Scintillation Counting
Last Updated Date: 06/27/2012 As part of the standardization of the 239 Pu solution that was disseminated by NIST as Standard Reference Material (SRM) 4330C, a detailed study … more
Test and Evaluation Protocols for ANSI/IEEE N42 Standards
Last Updated Date: 06/27/2012 The purpose of these test and evaluation protocols is to provide additional information to the published ANSI/IEEE N42 series for homeland … more
Automated Multi-Sample Ionization Chamber for Radioactivity Standards
Last Updated Date: 06/27/2012 NIST radioactivity standards for gamma-ray emitting radionuclei are presently maintained as calibration factors for a single, manually operated, … more
Radon Binding to Water-Soluble Cryptophane
Last Updated Date: 06/27/2012 Collaboration on investigating the thermodynamics of radon binding with a new and novel class of cryptophane molecules is currently underway with … more
New Statistical Analysis Tools
Last Updated Date: 06/27/2012 Members of the Radioactivity Group (RG) have been actively collaborating with statisticians in the NIST Statistical Engineering Division to … more
Technetium-99m Primary Standardization and International Comparison
Last Updated Date: 06/27/2012 Technetium-99m ( 99m Tc) is used in two-thirds of all diagnostic nuclear medicine procedures in the United States. more
International Comparison of Pu-241
Last Updated Date: 06/27/2012 All of the plutonium isotopes, which have a very high biotoxicity, are man-made and result from various nuclear activities. Plutonium-241 is a … more
International Comparison of Lu-177
Last Updated Date: 06/27/2012 There has been increasing interest during the past 10 years in the use of 177 Lu for radionuclide-based radiotherapy for certain types of cancers. … more
Blind Measurement Comparisons of the USA and UK Pb-210 National Standards
Last Updated Date: 06/27/2012 The National Institute of Standards and Technology (NIST), Radioactivity Group, and the National Physical Laboratory (NPL) of the UK, and the … more |
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