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Displaying 52001 - 52025 of 73893

Project Summaries 1998. NIST Building and Fire Research Laboratory

July 1, 1998
Author(s)
Noel J. Raufaste Jr
NIST's Building and fire Research Laboratory (BFRL), one of NIST's seven Laboratories, enhances the competitivness of U.S. industry and public safety rhgough performance prediction and measurement technologies and technical advances that improve the life

Proposed Pressure Standard Based on Capacitance Measurements

July 1, 1998
Author(s)
Michael R. Moldover
We propose to measure the dielectric constant [epsilon] and the thermodynamic temperatue T of helium near 273.16 K and to calculate the pressure p([epsilon],T) of the helium from the fundamental constants, quantum mechanics, and statistical mechanics. If

Quantitative secondary ion mass spectrometry imaging of self-assembled monolayer films for electron beam dose mapping in the environmental scanning electron microscope

July 1, 1998
Author(s)
John G. Gillen, Scott A. Wight, David S. Bright, T M. Herne
Fluorinated alkanethiol self assembled monolayers (SAM) films immobilized on gold substrates have been used as electron-sensitive resists to map quantitatively the spatial distribution of the primary electron beam scattering in an environmental scanning

Quantitative Surface Analysis for Catalysts by Electron Spectroscopy

July 1, 1998
Author(s)
H Shimada, Cedric J. Powell
An overview is given of a new cooperative project under the Implementing Agreement between the Technology Administration, U.S. Department of Commerce, and the Agency of Industrial Science and Technology, Japanese Ministry of International Trade and

Reinterpretation of the Spectra of Hydrated Co++: An ab initio Study

July 1, 1998
Author(s)
H S. Gilson, Morris Krauss
The absorption spectrum of aqueous Co++ is reinterpreted in light of ab initio calculations. MCSCF and MR-MP calculations yield the spectral states and their oscillator strengths, as well as the spin-orbit coupling between the quartet and doublet states of

Resistance Measurement Assurance Program at NIST

July 1, 1998
Author(s)
Ronald F. Dziuba, June E. Sims
The National Institute of Standards and Technology (NIST) offers resistance Measurement Assurance Program (MAP) transfers at the 1 ohm} and 10 kohm} levels, to provide a method of assessing and maintaining the quality of a customer's measurement process

Seismic Performance of Masonry Walls With Bed Joint Reinforcement

July 1, 1998
Author(s)
A E. Schultz, R S. Hutchinson, Geraldine Cheok
In-plane cyclic load tests of partially grouted concrete masonry shear walls with bed joint reinforcement are presented. Specimen design and construction, and simulated seismic testing procedures, are summarized. Lateral force resistance mechanisms are

Shear Viscosity and Dielectric Constant of Liquid Methanol

July 1, 1998
Author(s)
Raymond D. Mountain
Molecular dynamics simulations for liquid methanol are used to estimate the dielectric constant and shear viscosity. A rigid, fixed-charge, three-site model is used. Three similar models that have been proposed provide estimates for these liquid methanol

The Magnification of Conic Mirror Reflectometers

July 1, 1998
Author(s)
K A. Snail, Leonard Hanssen
Conic mirror reflectometers are used to measure the diffuse reflectance and total integrated scatter of surfaces. In spite of the long history of using conic mirrors for these purposes, the maximum magnification of the three primary types of conic mirrors
Displaying 52001 - 52025 of 73893
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