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Displaying 41051 - 41075 of 74191

X-Ray Topography of Microgravity-Grown Ribonuclease S Crystals

August 1, 2003
Author(s)
David T. Gallagher, C Stover, D Charlton, L Arnowitz, David R. Black
Crystals of the enzyme RNase S were grown at micro and unit gravity using a dialysis-based dynamically controlled device. Crystals were grown at 24 C on space shuttle flights STS 93 and STS 95. Control crystals were grown simultaneously in ground

What Are Lighting Controls Protocols, and Why Does Anyone Care About Them?

July 31, 2003
Author(s)
Stephen J. Treado
Lighting controls protocols are discussed. Key elements are power and flexibility, both in system design and implementation, and in operation. The overriding tred is towards ever-increasing user expectations, needs, and requirements, along with equipment

Base-Dependent Competitive Adsorption of Single-Stranded DNA on Gold

July 30, 2003
Author(s)
H Y. Kimura-Suda, D Y. Petrovykh, Michael J. Tarlov, L J. Whitman
Aqueous solutions of single-stranded DNA probes (ssDNA) are widely used with gold surfaces in current biotechnology and emerging nanotechnology applications. Although recent studies have shown that different DNA bases interact differentlywith gold surfaces

Building a Filtering Test Collection for TREC 2002

July 28, 2003
Author(s)
Ian M. Soboroff, S E. Robertson
Test collections for the filtering track in TREC have typically used either past sets of relevance judgments, or categorized collections such as Reuters Corpus Volume 1 or OHSUMED, because filtering systems need relevance judgments during the experiment

Influence of a Catalytic Surfactant on Roughness Evolution During Film Growth

July 24, 2003
Author(s)
Daniel Wheeler, Thomas P. Moffat, Geoffrey B. McFadden, Sam R. Coriell, Daniel Josell
celerator Coverage (CEAC) based mechanism for the impact of additives on the evolution of surface roughness is explained; the CEAC mechanism accounts for the conservation of locl coverage of adsorbed catalyst on a deforming interface. It has recently been

Effect of Surface Wettability on Fast Transient Microboiling Behavior

July 22, 2003
Author(s)
O C. Thomas, Richard E. Cavicchi, Michael J. Tarlov
Microboiling events associated with the fast transient heating of a micrometer-scale metallic thin film heater immersed in water have been studied. The effect of surface properties on the microboiling transients was examined by modifying heater surfaces

Collision Dynamics of A Liquid Fire Suppressant Upon A Heated Wax Surface

July 18, 2003
Author(s)
Samuel L. Manzello, Jiann C. Yang
The impact of a distilled water droplet upon a heated wax surface was investigated experimentally using a high-speed digital camera at 1000 frames/s. Two different droplet impact Weber numbers (We) were considered and the collision dynamics were

Electrical metrology with single electrons

July 16, 2003
Author(s)
Neil M. Zimmerman, Mark W. Keller
This paper is mostly a review of the progress made at NIST in pursuing a capacitance standard based on the charge of the electron. We briefly introduce the Coulomb blockade, which is the basic physical phenomenon allowing control of single electrons

Government Smart Card Interoperability Specification, Version 2.1

July 16, 2003
Author(s)
Teresa T. Schwarzhoff, James F. Dray Jr., John P. Wack, Eric Dalci, Alan H. Goldfine, Michaela Iorga
This Government Smart Card Interoperability Specification (GSC-IS) provides solutions to a number of the interoperability challenges associated with smart card technology. The original version of the GSC-IS (version 1.0, August 2000) was developed by the

An Overview of Issues in Testing Intrusion Detection Systems

July 11, 2003
Author(s)
Peter M. Mell, R Lippmann, Chung Tong Hu, J Haines, M Zissman
While intrusion detection systems are becoming ubiquitous defenses in today's networks, currently we have no comprehensive and scientifically rigorous methodology to test the effectiveness of these systems. This paper explores the types of performance

Cryogenic Electronics for Measurements and Standards

July 11, 2003
Author(s)
Richard E. Harris
A wide range of applications of cryogenic electronics to measurements and standards is described. Standards include those for voltage, capacitance and current, resistance and temperature. Measurements include those for imaging of radiation from the

EMC Research at NIST, Boulder

July 11, 2003
Author(s)
Perry F. Wilson, Christopher L. Holloway, Galen H. Koepke, John M. Ladbury, Arthur Ondrejka, Robert T. Johnk, Keith D. Masterson, Dennis G. Camell
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Displaying 41051 - 41075 of 74191
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