Chemistry Programs & Projects | |
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New Reference Standards for Digital Mammography
Last Updated Date: 03/13/2013 New NIST reference mammography beams using a tungsten target and silver, rhodium, molybdenum and aluminum filters at 20 kV to 50 kV have been … more
National and International Standards for X-ray Security Screening Applications
Last Updated Date: 03/13/2013 The primary objective of this project is to assure the technical performance and radiation safety of the nation’s x-ray and gamma-ray … more
Air Kerma Measurements in High Energy X-ray Beams
Last Updated Date: 03/13/2013 Cargo-inspection systems employ high-energy x-ray beams from accelerators. These systems are designed to detect potential threats that may be … more
Small-Field Therapy Dosimetry Using Alanine/EPR
Last Updated Date: 03/13/2013 NIST has an ongoing program in small-field therapy dosimetry studies using alanine/EPR.
Absorbed Dose to Water and Air Kerma Calibrations in Co-60 Therapy Level Gamma-Ray Beams
Last Updated Date: 03/13/2013 Three dosimetry calibration laboratories accredited by the American Association of Physicists in Medicine (AAPM) routinely perform calibrations of … more
Air Kerma Calibrations in Radiation Protection Level 137Cs and 60Co Gamma Ray Beams
Last Updated Date: 03/13/2013 The Dosimetry Group maintains and disseminates the national measurement standards for air-kerma (exposure) from 137 Cs and 60 Co gamma-ray beams … more
National Air-Kerma Standard for Electronic Brachytherapy
Last Updated Date: 03/13/2013 The Dosimetry Group has developed a new facility for the calibration of the Xoft miniature x-ray source, which provides low-energy x-rays … more
Expression of Stable Isotopically Labeled Proteins for Use as Internal Standards for Mass Spectrometric Quantitation of Clinical Protein Biomarkers
Last Updated Date: 03/13/2013 Proteins are of significant interest as potential indicators (biomarkers) of health or disease. Clinical methods employed to measure these … more
Metallomics: A Multidisciplinary Approach for the Qualitative and Quantitative Determination of Proteins and Metalloproteins Used as Health and Disease Markers
Last Updated Date: 03/13/2013 As healthcare shifts from management of disease to management of health, there will be a necessary shift toward development of quantitative health … more
Illicit Trafficking of Radioactive Materials
Last Updated Date: 03/13/2013 The National Institute of Standard and Technology (NIST) is working in the development of ANSI/IEEE and IEC standard for the detection of illicit … more
Development of Methods for Measurement of Vitamin D in Foods, Fortified Foods, and Dietary Supplements
Last Updated Date: 03/13/2013 Vitamin D is a fat-soluble vitamin that is essential for bone health. Vitamin D deficiency is associated with muscle weakness and osteoporosis and … more
Development of SRM 955c Lead in Caprine Blood
Last Updated Date: 03/13/2013 Environmental and occupational exposure to toxic metals is assessed through whole blood analysis. Due to advances in measurement technology, … more
Springback
Last Updated Date: 03/13/2013 Elastic springback compensation is a long-standing issue for formed sheet automotive components. The ability to predict the magnitude of … more
Crystallographic Databases
Last Updated Date: 03/13/2013 Components and devices used in a broad spectrum of technology sectors such as health care, communications, energy and electronics are manufactured … more
Explosives Decomposition Chemistry
Last Updated Date: 03/12/2013 High-energy materials are commonly used as military explosives and as advanced propellants. The detailed chemical reactions responsible for … more |
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