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Displaying 45051 - 45075 of 74167

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

Electron Diffraction Using Transmission Electron Microscopy

November 1, 2001
Author(s)
Leonid A. Bendersky, Frank W. Gayle
Electron diffraction via the transmission electron microscope is a powerful method for characterizing the structure of materials, including perfect crystals and defect structures. The advantages of electron diffraction over other methods, e.g., x-ray or

Fire Dynamics Simulator (Version 2) -- Technical Reference Guide

November 1, 2001
Author(s)
Kevin B. McGrattan, Howard R. Baum, Ronald G. Rehm, Anthony P. Hamins, Glenn P. Forney, J E. Floyd, Simo A. Hostikka
Fire Dynamics Simulator (FDS) is a computational fluid dynamics (CFD) modelof fire-driven fluid flow. The equations described in this document are a form of the Navier-Stokes equations appropriate for low-speed, thermally-driven flow with an emphasis on

Fire Dynamics Simulator (Version 2) -- User's Guide

November 1, 2001
Author(s)
Kevin B. McGrattan, Glenn P. Forney, J E. Floyd, Simo A. Hostikka
Fire Dynamics Simulator (FDS) is a computational fluid dynamics (CFD) modelof fire-driven fluid flow. The software described in this document solves numerically a form of the Navier-Stokes equations appropriate for low-speed, thermally-driven flow with an

Fire Dynamics Simulator (Version 3): Technical Reference Guide (NISTIR 6783)

November 1, 2001
Author(s)
Kevin B. McGrattan, Howard R. Baum, Ronald G. Rehm, Anthony P. Hamins, Glenn P. Forney, J E. Floyd, Simo A. Hostikka
Fire Dynamics Simulator (FDS) is a computational fluid dynamics (CFD) model of fire-driven fluid flow. The equations described in this document are a form of the Navier-Stokes equations appropriate for low-speed, thermally-driven flow with an emphasis on

Fire Dynamics Simulator (Version 3): User's Guide (NISTIR 6784)

November 1, 2001
Author(s)
Kevin B. McGrattan, Glenn P. Forney, J E. Floyd, Simo A. Hostikka
Fire Dynamics Simulator (FDS) is a computational fluid dynamics (CFD) model of fire-driven fluid flow. The software described in this document solves numerically a form of the Navier-Stokes equations appropriate for low-speed, thermally-driven flow with an

From Bulk to Nanoscale Magnetism and Exchange Bias in CuO Nanoparticles

November 1, 2001
Author(s)
A Punnoose, H Magnone, M Seehra, John E. Bonevich
Detailed studies of the temperature (5 K to 350 K) and magnetic field variations (up to H = 50 k0e) of the magnetization of CuO nanoprticles of size range 37 nm to 6.6 nm are reported. These particles are synthesized by the sol-gel method in combination

Growth of Submicron AlGaN/GaN/AlGaN Heterostructures by Hydride Vapor Phase Epitaxy (HVPE)

November 1, 2001
Author(s)
Denis Tsvetkov, Y Melnik, Albert Davydov, Alexander J. Shapiro, O Kovalenkov, J B. Lam, J J. Song
Multi layer AlGaN/GaN epitaxial structures were grown on SiC by HVPE method. Characterization of the grown structures was performed using SEM, SIMS, mercury probe, electroluminescence and photoluminescence techniques. Thicknesses of nitride layers in the

High Pressure X-Ray Crystallography With the Diamond Cell at NIST/NBS

November 1, 2001
Author(s)
Gasper J. Piermarini
Scientists in the Crystallography Section at NIST/NBS made several outstanidng contributions greatly influencing the development and advancement of high pressure x-ray crystallography during the second-half of the 20th century. These milestone achievements

Interface Specification for a Supply Chain Simulation

November 1, 2001
Author(s)
Yung-Tsun T. Lee, Shigeki Umeda
This paper describes the scope and configuration of the simulation model that is under development for a manufacturing supply chain. An information model that serves as a neutral interface specification is also presented in the paper. The supply chain

Interfacial Shear Strengths of Dental Resin-Glass Fibers by the Microbond Test

November 1, 2001
Author(s)
Walter G. McDonough, Joseph M. Antonucci, Joy Dunkers
In this study, the feasibility of using the microbond test (MBT) to probe the durability of the bond between a dental resin with differently silanized E-glass fibers was investigated. The E-glass fibers were silanized with equivalent amounts of two types

Interference Aware Bluetooth Packet Scheduling

November 1, 2001
Author(s)
Nada T. Golmie, Nicolas Chevrollier, I El bakkouri
Bluetooth is a radio technology for Wireless Personal Area Networks operating in the 2.4 GHz ISM band. Since both Bluetooth and IEEE 802.11 devices use the same frequency band and may likely come together in a laptop or may be close together at a desktop
Displaying 45051 - 45075 of 74167
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