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Displaying 44826 - 44850 of 73960

1,2-Pentadiene Decomposition

November 1, 2001
Author(s)
J Herzler, Jeffrey A. Manion, Wing Tsang
1,2-Pentadiene has been decomposed in single pulse shock tube experiments. There appear to be a large number of parallel decomposition and isomerization channels. The following rate expressions for isomerization in the temperature range 1100 K-1250 K and 2

2 Combinatorial Methods Polymer Science: Synthesis and Characterization

November 1, 2001
Author(s)
J C. Meredith, A P. Smith, Alamgir Karim, Eric J. Amis
Combinatorial methodologies offer the ability to efficiently measure relevant chemical and physical properties over lare regimes of varible space. We review recent work in the development of combinatorial methods for polymer synthesis and characterization

A 2.4mm Coaxial Power Standard at NIST

November 1, 2001
Author(s)
Thomas P. Crowley, Fred R. Clague
A microcalorimeter and bolometer transfer standard are used as a national standard for microwave power from 50 MHz to 50 GHz. the microcalorimeter is used to determine the efficiency of the bolometric transfer standards and is similar to an existing Type N

Amorphous Calcium Phosphate

November 1, 2001
Author(s)
Laurence C. Chow, E D. Eanes
Amorphous structures represent about 20% of the 60 or so different mineral types formed by the action of living organisms. Among these biogenic amorphous minerals, those that are composed principally of calcium and phosphate are most abundant in the teeth

AutoBid: System for Police Patrol Selection.

November 1, 2001
Author(s)
S F. Weber, Amy S. Rushing
AutoBid is designed to help police fleet administrators select the patrol vehicle that is best suited to the needs of their department. The system is based on vehicle performance test data for police patrol package models published annually by the Michigan

CFD Modeling and Comparison with Data for the NIST Reference Spray Combustor

November 1, 2001
Author(s)
D S. Crocker, J F. Widmann, Cary Presser
Validation of computational fluid dynamics (CFD) predictions for spray combustion application has been a challenging task due to difficulties in both modeling and experimental measurements. However, validation is considered to be an essential exercise for

Characterization of 2.5 Inch Diameter Bulk GaN Grown from Melt-Solution

November 1, 2001
Author(s)
V Soukhoveev, V Ivantsov, Y Melnik, Albert Davydov, Denis Tsvetkov, K Tsvetkova, I Nikitina, A Zubrilov, A Lavrentiev, Vladimir A. Dmitriev
Crystal growth from a melt or melt-solution is a widely accepted technique for industrial-scale production of important semiconductor materials. Recently we have demonstrated 50 mm diameter GaN crystals grown by melt-solution technique [1]. The crystals

Commemorative Issue for Professor Simon H. Bauer I: Editorial Comment

November 1, 2001
Author(s)
Wing Tsang, Robert E. Huie, Jeffrey A. Manion
The next two issues of the International Journal of Chemical Kinetics are dedicated to Prof. Simon H. Bauer on the occasion of his 90th birthday. These issues contain a number of papers by his students and colleagues who have built on his pioneering

Computer Forensics Guidance

November 1, 2001
Author(s)
G E. Fisher
This ITL Bulletin describes two projects in the computer forensics arena and provides guidance on the use of the products developed from them. The first project, the National Software Reference Library (NSRL), describes a database of known file

Crystal Structure of Dephospho-Coenzyme A Kinase from Haemophilus Influenzae

November 1, 2001
Author(s)
G Obmolova, A Teplyakov, N Bonander, E Eisenstein, A J. Howard, G L. Gilliland
phospho-coenzyme A kinase catalyzes the final step in CoA biosynthesis, the phosphorylation of the 3'-hydroxyl group of ribose using ATP as a phosphate donor. The protein from Haemophilus influenzae was cloned and expressed, and its crystal structure

Dedication to Richard D. Deslattes

November 1, 2001
Author(s)
Ernest G. Kessler, Gabrielle G. Long
On May 16, 2001, the National Institute of Standards and Technology lost a most illustrious career scientist in x-ray research. This volume is dedicated to honor the memory of Richard D. Deslattes and his lifetime of achievments at NIST. Deslattes'

Driving Bose-Einstein-Condensate Vorticity With a Rotating Normal Cloud

November 1, 2001
Author(s)
P C. Haljan, Ian R. Coddington, P Engels, Eric A. Cornell
We have developed an evaporative cooling technique that accelerates the circulation of an ultra-cold 87Rb gas, confined in a static harmonicpotential. As a normal gas is evaporatively spun up and cooled below quantum degeneracy, it is found to nucleate

Drying/Hydration in Cement Pastes During Curing

November 1, 2001
Author(s)
Dale P. Bentz, K K. Hansen, H D. Madsen, F A. Vallee, E J. Griesel
As concrete cures in the field, there is a constant competition for the mixing water between evaporation and hydration processes. Understanding the mechanisms of water movement in the drying/hydrating cement paste is critical for designing curing systems

Effect of Aluminum Flake Orientation on Coating Appearance

November 1, 2001
Author(s)
Li Piin Sung, Maria E. Nadal, M E. McKnight, Egon Marx, R Dutruc-Rosset, B Laurenti
The orientation of platelet-like pigments in coatings is affected by the processing conditions resulting in appearance variations of the final product. A set of aluminum-flake pigmented coatings having different flake orientations was pre-pared using
Displaying 44826 - 44850 of 73960
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