U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 40451 - 40475 of 74099

Wavelength-Tracking Capabilities of a Fabry-Perot Cavity

November 20, 2003
Author(s)
Jack A. Stone Jr., Alois Stejskal
We have characterized the accuracy of atmospheric wavelength tracking based on a laser servolocked to a simple Fabry-Peron cavity. The motivations are (1) to explore a method for air refractive index measurement and (2) to determine the stability and

A Photoconductivity Technique for the Assessment of Pigment Reactivity

November 19, 2003
Author(s)
Joannie W. Chin, S J. Scierka, T Kim, Amanda L. Forster
Large volumes of titanium dioxide (TiO2) are utilized each year in coatings, sealants, plastics and paper for opacification and pigmentation purposes. It is well known that the photoreactivity of TiO2 can contribute to the degradation of the material that

Reversible axial-strain effect and extended strain limits in Y-Ba-Cu-O coatings on deformation-textured substrates

November 17, 2003
Author(s)
Najib Cheggour, John (Jack) W. Ekin, Cameron C. Clickner, D. T. Verebelyi, C. L. H. Thieme, Ron Feenstra, P Goyal
The dependence of transport critical-current density (J c) on axial tensile strain (ε) was measured at 76 K and self-magnetic field for YBa 2Cu 3O 7-δ (YBCO) coatings on buffered, deformation-textured substrates of pure Ni, Ni-5at.%-W, and Ni-10-at.%Cr-2

Neighborhood-Scale Fire Spread

November 16, 2003
Author(s)
Ronald G. Rehm, D. D. Evans, William E. Mell, Simo A. Hostikka, Kevin B. McGrattan, Glenn P. Forney, Charles E. Bouldin, Elisa S. Baker
This paper describes development of a physics-based mathematical and computational model to predict fire spread among structures and natural fuels (trees, shrubs and ground litter). This tool will be used to understand how fires spread in a community where

Time-Domain Measurements of Radiated and Conducted Ultrawideband Emissions

November 16, 2003
Author(s)
Robert T. Johnk, David R. Novotny, Chriss A. Grosvenor, Seturnino Canales, Jason Veneman
This paper summarizes results obtained from time-domain full-bandwidth emissions measurements of selected ultrawideband (UWB) transmitting devices. Brief descriptions of two NIST-developed measurement systems are provided. High-fidelity time-domain

An XPS Study on the Effects of Pigment on the UV Degradation of an Epoxy System

November 14, 2003
Author(s)
S J. Scierka, Amanda L. Forster, Wendy E. Kosik, Jonathan W. Martin
X-ray photoelectron spectroscopy (XPS) is a powerful tool that has been used to monitor the changes in chemistry on the surface of many materials. In this study it is used to examine the chemical changes in an epoxy system formulated with and without

Certification of Standard Reference Material 1474a, A Polyethylene Resin

November 14, 2003
Author(s)
J R. Maurey, Kathleen M. Flynn, Charles M. Guttman
The melt flow rate of Standard Reference Material (SRM) 1474a, a linear polyethylene (narrow MWD ethylene-hexene copolymer) resin, was determined to be 5.10 g/10 min at 190 OC under a load of 2.16 kg using the ASTM Method D 1238-00. The average results

1st Annual PKI Research Workshop Proceedings

November 12, 2003
Author(s)
Sean W. Smith, William Polk, Nelson Hastings
NIST hosted the first annual Public Key Infrastructure (PKI) Research Workshop on April 24-25, 2002. The two-day event brought together PKI experts from academia, industry, and government to explore the remaining challenges in deploying public key

Advances in Radiometry for Ocean Color

November 10, 2003
Author(s)
Steven W. Brown, D K. Clark, Bettye C. Johnson, Howard W. Yoon, Keith R. Lykke, S Flora, M Feinholz, N Souaidia, C Pietras, Thomas C. Stone, M Yarbrough, Y S. Kim, R Barnes, J Mueller
Organic materials in the oceans have spectral signatures based on their light-scattering properties. These optical properties are related to bio-physical and bio-chemical data products, such as the concentration of phytoplankton chlorophyll-α, through bio

The Dilogarithm Function for Complex Argument

November 8, 2003
Author(s)
L C. Maximon
This paper summarizes the basic properties of the Euler dilogarithm function, often referred to as the Spence function. These include integral representations, series expansions, linear and quadratic transformations, functional relations, numerical values

A New Federal Test Procedure for Dishwashers

November 1, 2003
Author(s)
Natascha S. Milesi-Ferretti
Soil-sensing models represent a group of innovative dishwashers that measure operational values (e.g., turbidity, pressure, water temperature) and adapt the wash cycle based on the information collected. Because of the responsiveness of these dishwashers

Ab Initio Study of the Oxidation Reaction of CO by ClO Radicals

November 1, 2003
Author(s)
F Louis, Carlos A. Gonzalez, J P. Sawerysyn
The oxidation of carbon monoxide by ClO radicals was studied by ab initio molecular orbital theory calculations. Geometry optimizations and vibrational frequencies were computed using two methods: Moller-Plesset second-order perturbation theory (MP2), and

Accelerated UV Weathering Device Based on Integrating Sphere Technology

November 1, 2003
Author(s)
Joannie W. Chin, E Byrd, E Embree, Jason D. Garver, B Dickens, T Finn, Jonathan W. Martin
An accelerated ultraviolet (UV) weathering device based on integrating sphere technology has been designed, fabricated, and implemented in weathering studies of polymers. This device has the capability of irradiating multiple speciments with exptremely

Activation Analysis

November 1, 2003
Author(s)
Rolf L. Zeisler, N Vajda, George P. Lamaze, G L. Molnar
Displaying 40451 - 40475 of 74099
Was this page helpful?