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NIST Authors in Bold

Displaying 41326 - 41350 of 73697

Model for Estimating Wear Transition Loads in Ceramics

February 19, 2003
Author(s)
S Jahanmir
The wear behavior of advanced ceramics (alumina, silicon nitride, and silcon carbide) changes as the load or the coefficient of friction is increased. This change is associated with a drastic increase in wear rate at a critical load that depends on the

Research on Site Qualifications above 1 GHz

February 18, 2003
Author(s)
Michael Windler, Dennis G. Camell
This is a summary of recent efforts conducted under the auspices of the American National Standards Institute (ANSI) Accredited Standards Committee C63, Sub-committee 1, working group 1-13.2. The main purpose of this group is to assess the applicability of

A Seven Junction Cooper Pair Pump

February 15, 2003
Author(s)
Joe Aumentado, Mark W. Keller, John M. Martinis
We have measured current-voltage curves and individual charge transfer events in single-Cooper-pair pumps. We observe clear charge pumping in units of 2e, but this behavior is accompanied by significant effects from unwanted quasiparticles.

Fingerprint Matching Using Distortion Tolerant Filters

February 13, 2003
Author(s)
Craig I. Watson, D P. Casasent
The purpose of this paper is to discuss the use of distortion tolerant filters to improve the performance of fingerprint correlation matching. Previous work has shown that correlation matching of fingerprints is susceptible to larger false alarm rates than

Comparison of Cryogenic Radiometry and Thermal Radiometry Calibrations at NIST Using Multichannel Filter Raidometers

February 7, 2003
Author(s)
Bettye C. Johnson, Steven W. Brown, Keith R. Lykke, Charles E. Gibson, G Fargion, G Meister, S B. Hooker, B L. Markham, James J. Butler
Comparison of independent measurement results allows an assessment of the accuracy of the underlying methods. In this work, four multichannel filter radiometers were calibrated using tunable laser-illuminated and lamp-illuminated integrating sphere sources

Binding and Hydrolysis of Ampicillin in the Active Site of a Zinc Lactamase

February 6, 2003
Author(s)
Morris Krauss, N. Gresh, J Antony
Binding and hydrolysis of ampicillin is described in a model active site derived from di-nuclear B.fragilis zinc lactamase. The protein binding site consists of the two zinc cations bound with a bridging hydroxide and ligands from the first-shell residues

Formation of aluminum oxide thin films on FeAl(110) studied by STM

February 6, 2003
Author(s)
Orhan Kizilkaya, Dustin Hite, David M. Zehner, Phillip T. Sprunger
The surface morphology and atomic structure of clean and oxidized FeAl(l 10) surfaces have been investigated with scanning tunneling microscopy (STM). An incommensurate reconstructed structure, having FeAl2 stoichiometry confined to the outmost layer, is

Slow Damping of Internal Waves in a Stably Stratified Fluid

February 4, 2003
Author(s)
Katharine F. Gurski, R Kollar, R L. Pego
We study the damping of internal gravity waves in a stably stratified fluid with constant viscosity in two- and three-dimensional bounded domains. For the linearized Navier-Stokes equations for incompressible flow with no-slip boundary conditions that

NIST Standard Reference Materials Catalog 2003

February 3, 2003
Author(s)
J W. Thomas
This catalog provides technical and general ordering information for the Standard Reference Materials [SRMs] and Reference Materials [RMs] currently available from the NIST SRM Program. The materials are arranged according to technical category and

2003 Weights and Measures Directory

February 1, 2003
Author(s)
L T. Sebring
This directory is a listing of weights and measures officials in the U.S. and its territories. It includes each official's agency, title, address, phone, fax, e-mail, and some URL addresses.

A Double-Primary Dead-Weight Tester for Pressures (35-175) kPa in Gage Mode

February 1, 2003
Author(s)
K. Jain, Y Q. Cen, Walter J. Bowers Jr., James W. Schmidt
Primary pressure standards in the atmospheric pressure range are often established using mercury manometers. Less frequently, controlled-clearance dead-weight testers in which one component (normally the piston) has been dimensionally measured have also

A Study on the Variance Estimation for a Stationary Process in SPC

February 1, 2003
Author(s)
Nien F. Zhang
Recently, statistical process control (SPC) methodologies have been developed to accommodate autocorrelated data. To construct control charts for stationary process data, the process variance needs to be estimated. For an independently identically

A SURF Beamline for Synchrotron Source-Based Absolute Radiometry

February 1, 2003
Author(s)
Ping-Shine Shaw, Uwe Arp, Howard W. Yoon, Robert D. Saunders, Albert C. Parr, Keith R. Lykke
A new source-based radiometry beamline at Synchrotron Ultraviolet Radiation Facility (SURF III) was constructed recently. The goal of this beamline is to establish a national source standard with wide spectral range from far UVto IR by using the
Displaying 41326 - 41350 of 73697
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