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Displaying 42901 - 42925 of 73697

Virial Coefficients of Pure Gases

August 1, 2002
Author(s)
J H. Dymond, K N. Marsh, R C. Wilhoit, K C. Wong, Michael D. Frenkel
This critical compilation of virial coefficients of pure gases is a sequel to The Virial Coefficients of Pure Gases and Mixtures, by J.H. Dymond and E.B. Smith (Oxford University Press, 1979). This new and enlarged edition was prepared from the virial

Virtual Reality Simulation of a Mechanical Assembly Production Line

August 1, 2002
Author(s)
Deogratias Kibira, Charles R. McLean
This paper presents our work on the application of virtual reality simulation to the design of a production line for a mechanically assembled product. The development of this simulation was undertaken as a part of the Manufacturing Simulation and

Structural Basis of Thermostability: Analysis of Stabilizing Mutations in Subtilisin BPN

July 26, 2002
Author(s)
O Almog, David Travis Gallagher, Jane E. Ladner, S Strausberg, Patrick Alexander, Phillip Bryan, G L. Gilliland
The crystal structures of two thermally stabilized subtilisin BPN' variants, S63 and S88, are reported here at 1.8 and 1.9 resolution, respectively. The micromolar affinity calcium-binding site (site A) has been deleted (δ 75-83) in these variants

A Model of Opposed Flow Flame Spread Over Charring Materials

July 25, 2002
Author(s)
A A. Atreya, Howard R. Baum
This paper presents a theoretical decsription of a diffusion flame spreading against the wind on a semi-infinite charring solid. It extends the previous flame spread models on vaporizing solids to charring materials like wood and provides a more realistic

Large Eddy Simulation of Buoyant Turbulent Pool Fires

July 25, 2002
Author(s)
J Gore, Kevin B. McGrattan, Ronald G. Rehm, Howard R. Baum
Three dimensional large eddy simulations (LES) of two buoyant flows were performed n conjunction with a Smagorinsky turbulence model. The flows included a non-reacting helium plume previously simulated with two-dimensional simulations and a methane/air

Raman Gain: Pump-wavelength Dependence in the Single-Mode Fiber

July 15, 2002
Author(s)
Nathan R. Newbury
The magnitude of the stimulated Raman gain spectrum will depend on the absolute pump wavelength. Measurements of the pump-wavelength scaling of the stimulated Raman gain of several single-mode fibers are presented. The measurements were obtained by use of

X-Ray Spectroscopy and Calibrations in the 50 eV to 60 keV Range

July 11, 2002
Author(s)
J Seely, Lawrence T. Hudson, J. Weaver, G Holland, C N. Boyer
Spectrometers have been developed to record x-ray spectra in the energy range 50 eV to 60 keV. The dispersion elements are transmission crystals for energies higher than approximately 10 keV, reflection crystals for 1 keV to 20 keV and transmission

SRM 2460/2461 Standard Bullets and Casings Project

July 10, 2002
Author(s)
Jun-Feng Song, Eric P. Whitenton, David R. Kelley, Robert A. Clary, L Ma, Susan M. Ballou, M Ols
The National Institute of Standards and Technology (NIST) Standard Reference Material (SRM) 2460/2461 standard bullets and casings project will provide support to firearms examiners and to the National Integrated Ballistics Information Network (NIBIN) in

A PDA Security Policy Enforcement Tool

July 9, 2002
Author(s)
Athanasios T. Karygiannis, Wayne Jansen, Serban I. Gavrila, Vlad Korolev
This paper describes a proof-of-concept implementation of a Personal Digital Assistant (PDA) Security Policy Enforcement Tool developed by NIST. This tool can assist enterprise security administrators in setting, updating, monitoring, and enforcing group

A Bose-Einstein Condensate in an Optical Lattice

July 1, 2002
Author(s)
J Denschlag, J E. Simsarian, H Heffner, C R. McKenzie, A Browaeys, D Cho, Kristian Helmerson, S L. Rolston, William D. Phillips
We have performed a number of experiments with a Bose-Einstein condensate (BEC) in a one dimensional optical lattice. Making use of the small momentum spread of a BEC and standard atom optics techniques a high level of coherent control over an artifical

A Facility for Nanoscience Research: An Overview

July 1, 2002
Author(s)
Joseph A. Stroscio, E Hudson, Steven R. Blankenship, Robert Celotta, Aaron P. Fein
We describe the development of an experimental system, consisting of a low temperature scanning tunneling microscope coupled to UHV tip and sample preparation chambers, with the goal of providing new measurement capabilities for the study of quantum and
Displaying 42901 - 42925 of 73697
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