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NIST Authors in Bold

Displaying 40526 - 40550 of 74099

Simulation of an Austenite-Twinned-Martensite Interface

November 1, 2003
Author(s)
Anthony J. Kearsley, L A. Melara
Developing numerical methods for predicting microstructure in materials is an extremely large and important research area. Two examples of material microstructures are Austenite and Martensite. Austenite is a microscopic phase with simple crystallographic

Small Angle X-Ray Scattering for Sub-100 nm Pattern Characterization

November 1, 2003
Author(s)
Ronald L. Jones, T Hu, Eric K. Lin, Wen-Li Wu, R Kolb, D Casa, P J. Bolton, G G. Barclay
The characterization of sub-100 nm photolithographic patterns with nanometer scale resolution is demonstrated using Small Angle X-ray Scattering (SAXS). The transmission scattering geometry employed is capable of high throughput measurements with

Specular Baffle for Improved Infrared Integrating Sphere Performance.

November 1, 2003
Author(s)
Leonard M. Hanssen, A Prokhorov, V B. Khromchenko
Baffles are often placed in integrating spheres to accommodate the non-ideal aspects of other sphere components. These include detectors, sources, sphere wall surface shape and coatings. Baffles intentionally prevent light interchange between these and

The Advanced Angle Metrology System at NIST

November 1, 2003
Author(s)
Jack A. Stone Jr.
At the National Institute of Standards and Technology, our best capability for angle measurement is our Advanced Automated Master Angle Calibration System (AAMACS). This instrument is based on a triple-stack of indexing tables, used in conjunction with

The Viscosity of Seven Gases Measured with a Greenspan Viscometer

November 1, 2003
Author(s)
John J. Hurly, Keith A. Gillis, J B. Mehl, Michael R. Moldover
We determined the viscosity of seven gases (Ar, CH4, C3H8, N2, SF6, CF4, C2F6) by interpreting frequency-response data from a Greenspan acoustic viscometer with a detailed model developed by Gillis, Mehl, and Moldover. The model contains a parameter er

Thermodynamics of the Hydrolysis Reactions of Adenosine 3', 5'-(Cyclic)phosphate(aq) and Phosphoenolpyruvate(aq); the Standard Molar Formation Properties of 3',5'-(Cyclic)Phosphate(aq) and Phosphoenolpyruvate(aq)

November 1, 2003
Author(s)
Robert N. Goldberg, Yadu D. Tewari
Molar calorimetric enthalpy changes DrHm(cal) have been measured for the biochemical reactions1 {ATP(aq) = cAMP(aq) + pyrophosphate(aq)} and {cAMP(aq) + H2O(l) = AMP(aq)}. The reactions were catalyzed, respectively, by adenosine 3',5'-(cyclic)phosphate and

Trends in Firefighter Fatalities Due to Structural Collapse, 1979-2002

November 1, 2003
Author(s)
L D. Brassell, D D. Evans
Between the years 1979 and 2002 there were over 180 firefighter fatalities due to structural collapse, not including those firefighters lost in 2001 in the collapse of the World Trade Center Twin Towers. Structural collapse is an insidious problem within

Understanding Self-Healing in Service-Discovery Systems

November 1, 2003
Author(s)
Christopher E. Dabrowski, Kevin L. Mills
Service-discovery systems aim to provide consistent views of distributed components under varying network conditions. To achieve this aim, designers rely upon a variety of self-healing strategies, including: architecture and topology, failure-detection and

Volumetric Gas Flow Standard with Uncertainty of 0.02% to 0.05%

November 1, 2003
Author(s)
John D. Wright, Michael R. Moldover, Aaron N. Johnson, A Mizuno
A new pressure, volume, temperature, and time (PVTt) primary gas flow standard for calibrating flowmeters has an expanded uncertainty (k = 2) of between 0.02% and 0.05%. The standard diverts a steady flow into a collection tank of known volume during a

Test Arenas and Performance Metrics for Urban Search and Rescue Robots

October 31, 2003
Author(s)
Adam S. Jacoff, Elena R. Messina, Brian Weiss, S Tadokoro, Y Nakagawa
In this paper, we discuss the development and proliferation of robot test arenas that provide tangible, realistic, and challenging environments for mobile robot researchers interested in urban search and rescue applications and other unstructured

From Databooks to Online Dictionaries and Parts Catalogues

October 27, 2003
Author(s)
John V. Messina, James A. St Pierre
This power point presentation was presented at the 4th Annual ECCMA Membership Conference at Lehigh University on October 22nd, 2003 during a panel presentation on competitive sourcing, parts interoperability, and inventory visibility in public sector

Manufacturing and Quality Control of the NIST Reference Material 8240 Standard Bullet

October 26, 2003
Author(s)
Eric P. Whitenton, Clarence Johnson, David R. Kelley, Robert A. Clary, Brian S. Dutterer, Li Ma, Jun-Feng Song, Theodore V. Vorburger
The National Integrated Ballistics Information Network (NIBIN) is currently under development by the Bureau of Alcohol, Tobacco and Firearms (ATF) and the Federal Bureau of Investigation (FBI). In support of this effort, the National Institute of Standards

Elevators for Occupant Evacuation and Fire Department Access

October 23, 2003
Author(s)
Erica D. Kuligowski
This paper will present a study of the potential for elevators to reduce occupant egress time and fire department access time for fires in tall buildings. Potential reductions in egress and access times will be compared for some specific cases where times

CONTAM 2.1 Supplemental User Guide and Program Documentation

October 22, 2003
Author(s)
George Walton, William Stuart Dols
CONTAM is a general purpose, multi-zone (nodal) airflow and contaminant transport analysis tool that can be used to determine inter-zone pressure differences, airflow rates and contaminant transport in complex building structures. This tool was developed
Displaying 40526 - 40550 of 74099
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