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Search Publications

NIST Authors in Bold

Displaying 51901 - 51925 of 74034

Sprinkler, Smoke and Heat Vent, Draft Curtain Interaction: Large Scale Experiments and Model Development. International Fire Sprinkler-Smoke and Heat Vent-Draft Curtain Fire Test Project (NISTIR 6196-1)

September 1, 1998
Author(s)
Kevin B. McGrattan, Anthony P. Hamins, D W. Stroup
The International Sprinkler, Smoke and Heat Vent, Draft Curtain Fire Test Project organized by the National Fire Protection Research Coundation (NFPRF) has brought together a group of industrial sponsors to study the interaction of sprinklers with roof

Standards for the Rapid Prototyping Industry

September 1, 1998
Author(s)
Kevin K. Jurrens
This discussion paper proposes that development of formalized standards for the rapid prototyping (RP) industry will help enable the continued growth and further advancement of RP technologies. Appropriate standards can provide common methods for measuring

Summary of the Structural Performance of Single-Family, Wood-Frame Housing

September 1, 1998
Author(s)
Charles W. Yancey, Geraldine Cheok, Fahim H. Sadek, B Mohraz
A review of the structural performance of single-family, wood-frame houses is presented. The performance of these structures in selected earthquakes and hurricanes is summarized. In general, wood-frame houses performed well with relatively few instances of

The 1996 North American Interagency Intercomparison of Ultraviolet Monitoring Spectroradiometers

September 1, 1998
Author(s)
E A. Thompson, B. Carol Johnson, P Disterhoft, D Wardle, E Wu, J Ehramjian, J Tusson, T Mestechkina, M Beaubian, J Gibson, D Hayes, J DeLuisi, E A. Early, W Mou
Concern over stratospheric ozone depletion has prompted several government agencies in North America to establish networks of spectroradiometers for monitoring solar ultraviolet irradiance at the surface of the Earth. To assess the ability of

The NIST Design/Process Planning Integration Project

September 1, 1998
Author(s)
Walter W. Nederbragt, Robert Allen, Shaw C. Feng, Serge Kaing, Ram D. Sriram, Yuyun Zhang
This paper presents a description of the National Institute of Standards and Technology (NIST) Design/Process Planning Integration (DPPI) Project, which addresses the need for improving communications between design and process planning activities

Towards STEP-Based Data Transfer in Layered Manufacturing

September 1, 1998
Author(s)
D Dutta, Anil Kumar, Mike Pratt, Ram D. Sriram
This paper concerns the informational requirements of layered manufacturing (LM). The most common industrial use of LM today is for rapid prototyping, but we take a wider view of it as a flexible fabrication technology. Its use in building functional

Trace Element Detection at Nanometer Scale Spatial Resolution

September 1, 1998
Author(s)
Dale E. Newbury
Trace elemental constituents present in materials at concentration levels below 0.01 mass fraction can exert significant control on important electronic, optical, chemical, and mechanical properties. Detecting and measuring trace constituents while

Visualization of Dendrimer Molecules by Transmission Electron Microscopy (TEM): Staining Methods and Cryo-TEM of Vitrified Solutions

September 1, 1998
Author(s)
C L. Jackson, H D. Chanzy, F P. Booy, B Drake, D A. Tomalia, Barry J. Bauer, Eric J. Amis
Images of individual dendrimer molecules of poly(amidoamine) (PAMAM) from generation 10 (G10) to G5 were imaged by conventional transmission electron microscopy (TEM) after staining with aqueous sodium phosphotunstate. The dendrimers were resolved as

Exploration of the Structural Environment of the Iron-Sulfur Cluster in Putidaredoxin by Nitrogen-15 NMR Spectroscopy of Selectively Labeled Cysteine Residues

August 28, 1998
Author(s)
Fahriye N. Sari, Marcia J. Holden, M P. Mayhew, V L. Vilker, B Coxon
Putidaredoxin is a di-iron protein whose paramagnetic region is not well characterized by 1H detected NMR. We have studied the structure of this region in greater detail by directly observed 15N NMR of oxidized and reduced putidaredoxin preparations in

A VRML Integration Methodology for Manufacturing Applications

August 24, 1998
Author(s)
Sanford P. Ressler, Afzal A. Godil, Quandou (. Wang, G S. Seidman
This paper describes several methods for using the Virtual Reality Modeling Language (VRML) as the visualization integration tech-nology for manufacturing simulation systems. One of our goals was to develop an integration methodology based on the use of

Reliability of Conformance Tests

August 21, 1998
Author(s)
Robert C. Hagwood, Raghu N. Kacker, James H. Yen, D L. Banks, Lynne S. Rosenthal, Leonard J. Gallagher, Paul E. Black
A conformance test is a software assurance test that is applied in order to determine if specification requirements of the software are being met. It is a time-dependent model, where the software object is subjected to an a priori known test suite. The

Diffraction Anomalous Fine Structure Study of Strained GA 1-x In x As on GaAs(001)

August 20, 1998
Author(s)
Joseph C. Woicik, J O. Cross, Charles E. Bouldin, Bruce D. Ravel, J G. Pellegrino, B W. Steiner, S G. Bompadre, L B. Sorensen, K E. Miyano, J P. Kirkland
Diffraction anomalous fine-structure measurements performed at both the Ga and As K edges have determined the Ga-As bond length to be 2.442 ± 0.005 {Angstrom} in a buried, 213 {Angstrom} thick Ga^0.78^In 0.22As layer grown coherently on GaAs(001). This

Elastic and Inelastic Collisions of Cold Spin-Polarized 133 Cs Atoms

August 17, 1998
Author(s)
P J. Leo, Eite Tiesinga, Paul S. Julienne, T G. Walker
We present theoretical calculations of thermally averaged elastic cross sections and spin relaxation rates in the temperature range 1 {micro}K to 300 {micro}K for magnetically trapped doubly polarized Cesium atoms. The calculations reproduce the recent
Displaying 51901 - 51925 of 74034
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