Chemistry Programs & Projects | |
|
Evaluation of Uncertainty in Brachytherapy Dosimetry
Last Updated Date: 06/26/2012 NIST is participating in Task Group # 138 (TG-138) of the American Association of Physicists in Medicine (AAPM), AAPM Recommendations on Assessing … more
Calibrations of a Miniature X-ray Source Used for Electronic Brachytherapy
Last Updated Date: 06/26/2012 A new laboratory dedicated to establishing a national primary air-kerma rate standard for Xoft's AXXENT™ miniature x-ray source has … more
Accelerator Facilities
Last Updated Date: 06/26/2012 The Radiation and Biomolecular Physics Division's accelerator facilities continue to support a broad range of research efforts in the areas of … more
Applications of Diagnostic X-ray Spectrometers
Last Updated Date: 06/26/2012 The Dosimetry Group designs, fabricates, and calibrates bent-crystal optics and diagnostic spectrometers for customers around the world. more
Expansion of the NIST Law Enforcement Test Bed for Trace Contraband Detection
Last Updated Date: 06/04/2012 The terrorist attacks of September 11, 2001, led to an unprecedented deployment of technologies in the field designed to screen people and their … more
Atomic Standard of Pressure
Last Updated Date: 12/15/2011 NIST scientists are working with other National Measurement Institutes to develop a high-accuracy primary standard for pressure in the range 0.3 … more
Reference Values of Gas Viscosity
Last Updated Date: 12/15/2011 NIST has refined techniques to produce reference values for the viscosity and thermal conductivity of argon with a standard uncertainty of only … more
Molecular spectroscopy
Last Updated Date: 12/15/2011 The molecular spectroscopy sub-group carries out vibrational and rotational spectroscopic analyses on experimental data obtained primarily in the … more
In Situ Characterization of Nanoscale Gas-Solid Interactions by TEM
Last Updated Date: 10/11/2011 Observing and measuring the dynamic changes that take place at the nanometer scale during the synthesis and use of carbon nanotubes (CNTs), … more
Improved quantitative medical CT imaging
Last Updated Date: 10/03/2011 Develop precision calibration standards for accurate determination of feature sizes in computed tomography images, to improve reliability of … more
Biochange Imaging Database to Assess Algorithm Accuracy in Lung Tumor Growth/Reduction
Last Updated Date: 02/08/2011 In the medical diagnostics community, and important problem is the determination as to whether a tumor has grown or shrunk in size. This … more
International System of Units (SI)
Last Updated Date: 01/13/2011 The International System of Units (SI) provides definitions of units of measurement that are widely accepted in science and technology and which … more
Special functions
Last Updated Date: 01/06/2011 This project will create a web-based portal enabling users to evaluate a large class of special functions to essentially arbitrary accuracy at … more
Sealant Service Life Prediction
Last Updated Date: 11/15/2010 The Building Joint Sealant Service Life Prediction Research project has been initiated by BFRL to deliver critical predictive models for … more |
Contact
General Information:301-975-NIST (6478) inquiries@nist.gov 100 Bureau Drive, Stop 1070 Gaithersburg, MD 20899-1070 |