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Displaying 45751 - 45775 of 73994

Temperature Variation of Magnetic Aftereffect

May 1, 2001
Author(s)
Lawrence H. Bennett
celerated testing of recording media to try to determine their life expectancy is one of the accepted tests that are currently utilized. The technique applied a reverse field to a magnetized decay and thus the amount of accelertion occurs at the peak of

The Atom Laser

May 1, 2001
Author(s)
S L. Rolston
This paper reviews the principles of atom laser action using Bose-Einstein condensed gases as sources of coherent matter waves.

The Electronic Kilogram

May 1, 2001
Author(s)
Michael H. Kelley
The kilogram is the only remaining base unit in the International System of Units (SI) whose definition is based on a single physical artifact rather than on fundamental properties of nature. Effects such as environmental contamination or material loss

The Impact-Echo Method: An Overview

May 1, 2001
Author(s)
Nicholas J. Carino
The impact-echo method is a technique for flaw detection in concrete. It is based on monitoring the surface motion resulting from a short-duration mechanical impact. The method overcomes many of the barriers associated with flaw detection in concrete based

The Maturity Method: From Theory to Application

May 1, 2001
Author(s)
Nicholas J. Carino, Hai S. Lew
The maturity method is a technique to account for the combined effects of time and temperature on the strength development of concrete. The method provides a relatively simple approach for making reliable estimates of in-place strength during construction

Towards a Traceable Nanoscale Force Standard

May 1, 2001
Author(s)
Jon R. Pratt, David B. Newell, Edwin R. Williams, Douglas T. Smith, John A. Kramar
The National Institute of Standards and Technology has launched a five-year project to traceably link the International System of Units (SI) to forces between 10 -8N and 10 -2N. In this paper, we give a background and overview of this project, discuss the

Validation and Modification of the 4SIGHT Computer Program (NIST IR 6747)

May 1, 2001
Author(s)
Kenneth A. Snyder
The original version of the 4sight computer program was written to facilitate the performance assessment of buried concrete structures based deterministic calculations of service life, using data supplied by the user. In an effort to assure reliability in

Visualization of Grit Interaction During the Ductile to Brittle Polishing Transition

May 1, 2001
Author(s)
Richard B. Mindek, Christopher J. Evans, Eric P. Whitenton
Dual strobe and single strobe once per revolution imaging techniques are employed on the Rapidly Renewable Lap (RRL) to study the ductile to brittle transition observed during the polishing of silicon and calcium flouride. Analysis of video images during

Workshop on Texture in Electronic Applications

May 1, 2001
Author(s)
Mark D. Vaudin, Debra L. Kaiser
A two day workshop on Texture in Electronic Applications was held on October 10-11,2000 at NIST, Gaithersburg. The workshop presented an excellent forum for discussion of a broad spectrum of texture-related issues of interest to academic,government and

Cost Analysis of Fire Suppression Systems

April 24, 2001
Author(s)
J M. Bennett, M L. Kolleck
All three services and their respective platforms have special problems in regard to fires. Each carries munitions, which can be initiated by a fire. In addition, each can also contain large quantities of fuel distributed in fuel tanks throughout, with
Displaying 45751 - 45775 of 73994
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