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Math Programs & Projects

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Testing of Radiation Detection Systems
Last Updated Date: 12/12/2012

NIST is working together with the Department of Homeland Security (DHS) Domestic Nuclear Detection Office (DNDO) in testing radiation detection … more

metRology Software Project
Last Updated Date: 11/14/2012

The goal of the metRology software project is to provide  a set of specialized functions for statistical metrology as a package for the R software … more

Bridge Safety
Last Updated Date: 11/13/2012

Our goal is to guide improvement in construction codes for both rehabilitated and new structures. Destructive and nondestructive data will allow … more

Proficiency Test Results
Last Updated Date: 10/22/2012

Proficiency Test (PT) results are available at no cost to customers who have tested SRMs 2092, 2096, and 2098.   A PT result serves as a means to … more

Thermodynamic & Kinetic Data for Sustainable Energy
Last Updated Date: 10/05/2012

Industry needs thermodynamic and kinetic data for the development of new materials for sustainable energy applications; expanded and new databases … more

Standard Reference Fluid Measurements
Last Updated Date: 10/05/2012

Property measurements of the very highest accuracies are important for developing the thermodynamic and transport property models for working … more

Working/Functional Fluids
Last Updated Date: 10/05/2012

The conversion of primary energy (e.g. heat generated by the combustion of a fuel) into useful work most often involves a working fluid operating … more

Evaluation of the Extent of Electron Scattering in a Low Vacuum Scanning Electron Microscope
Last Updated Date: 10/02/2012

Low vacuum scanning electron microscopes utilize gas molecules in the specimen chamber to neutralize the specimen charging from the impinging … more

DTSA-II Reinvention of a Classic
Last Updated Date: 10/02/2012

The original NBS/NIH DTSA (Desktop Spectrum Analyzer) software was widely used in the x-ray microanalysis research community. The combination of … more

Analysis of 3D Elemental Mapping Artifacts in Biological Specimens using Monte Carlo Simulation
Last Updated Date: 10/02/2012

We performed Monte Carlo simulation to demonstrate the feasibility of using the focused ion beam based X-ray microanalysis technique (FIB-EDS) for … more

A Comparison of WD-EPMA Heterogeneity Testing Procedures
Last Updated Date: 10/02/2012

The heterogeneity of the four elements in a TiAl(NbW) SRM 2061 alloy were determined from five specimens with WD-EPMA (wavelength dispersive – … 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. 

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

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