U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 52026 - 52050 of 74034

What Are the Lights on Your Surge Protector Telling You

August 1, 1998
Author(s)
Francois D. Martzloff
Surge-Protective devices (SPD) applied in low-voltage ac power circuits should be provided with appropriate means to disconnect a failed SPD from the power system and provide a clear indication of the SPD status. This objective has not been consistently

Proceedings of the 1998 DARPA/NIST Smart Spaces Workshop

July 30, 1998
Author(s)
Vincent M. Stanford
Given a visionary scenario for the uses of Smart Space and an introduction from Kevin Mills and Jean Scholtz of DARPA, and Marty Herman of NIST on a possible research agenda, the workshop participants were divided into four groups, each addressing a

A Thermodynamic Investigation of Reactions Catalyzed by Tryptophan Synthase

July 27, 1998
Author(s)
N Kishore, Yadu D. Tewari, D Akers, Robert N. Goldberg, E. W. Miles
Microcalorimetry and high-performance liquid chromatography have been used to conduct a thermodynamic investigation of the following reactions catalyzed by the tryptophan synthase [alpha] 2[Beta] 2 complex (EC 4.2.1.20) and its subunits:indole(aq) + L

Absorption Line Evaluation Methods for Wavelength Standards

July 22, 1998
Author(s)
C. J. Zhu, Leonard M. Hanssen
Two methods for absorption line (peak) evaluation based on center of gravity (CG) calculations are described and compared using spectra of the NIST standard reference material (SRM) 1921(a) characterization measurements. These methods are (1) calculating

Kinetics and Mechanism of the Reaction of NH 2 with O 2 in Aqueous Solutions

July 15, 1998
Author(s)
B Laszlo, Z B. Alfassi, Pedatsur Neta, Robert E. Huie
The reaction of NH 3 with OH or SO 4 radicals produces the aminyl radical, NH 2. Pulse radiolysis and laser flash photolysis techniques were utilized to study the formation of this radical, its absorption spectrum, its reaction with O 2, and the mechanism

Step Bunching: Influence of Impurities and Solution Flow

July 14, 1998
Author(s)
A A. Chernov, P G. Vekilov, Sam R. Coriell, B T. Murray, Geoffrey B. McFadden
Step bunching results in striations even at relatively early stages of its development and in inclusions of mother liquor at the later stages. Therefore, eliminating step bunching is crucial for high crystal perfection. The nature of step bunching

A Revised Model for Role-Based Access Control

July 9, 1998
Author(s)
Wayne Jansen
Role Based Access Control (RBAC) refers to a class of security mechanisms that mediate access to resources through organizational identities called roles. A number of models have been published that formally describe the basic properties of RBAC. This

Moment-Preserving Modeling With Image Applications

July 6, 1998
Author(s)
Anastase Nakassis, Abdou S. Youssef
Linear least-square modeling is a powerful modeling approach. Optimal piece-wise constant modeling is an important special case. In this paper we will develop a piece-wise constant modeling method that preserves the regional means and regional first
Displaying 52026 - 52050 of 74034
Was this page helpful?