NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

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 45376 - 45400 of 73697

A Preliminary Information Model for a Supply Chain Simulation

May 1, 2001
Author(s)
Shigeki Umeda, Charles R. McLean, Yung-Tsun T. Lee
This paper provides an overview of the information model that is under development for the simulation of a manufacturing supply chain. The supply chain simulation is being developed to validate interface specifications as part of the Intelligent

Analysis of Stresses in Aluminum-Silicon Alloys

May 1, 2001
Author(s)
A Saigal, Lin-Sien H. Lum
Two-phase aluminum-silicon-based alloys are widely used for premium quality castings for aerospace and automotive applications. While it is clear that silicon improves fluidity in the molten state, providing excellent castability to the alloy, and

BFRL Publications, 2000, Volumes 1 and 2

May 1, 2001
Author(s)
Star R. Burgess, Glenn P. Forney, Nora H. Jason
BFRL Publications, 2000, contains publications produced by or for BFRL staff during 2000. Volume 1 contains Building Research Publications and Volume 2 contains Fire Research publications. We also have included software for solving problems related to

Biometrics - Technologies for Highly Secure Personal Authentication

May 1, 2001
Author(s)
Fernando L. Podio
Biometrics are automated methods of recognizing a person based on a physiological or behavioral characteristic. Biometric technologies are becoming the foundation of an extensive array of highly secure identification and personal verification solutions

Calibrating Electro-Optic Sampling Systems

May 1, 2001
Author(s)
Dylan Williams, Paul D. Hale, Tracy S. Clement, Juanita M. Morgan
We apply frequency-domain impedance mismatch corrections to a temporal electro-optic sampling system. We identify and evaluate additional sources of measurement uncertainty. We use the system to characterize the magnitude and phase response of a

Calibration of Thin Heat Flux Sensors for Building Applications Using ASTM C 1130

May 1, 2001
Author(s)
Robert R. Zarr, V Martinez-Fuentes, James J. Filliben, Brian P. Dougherty
Calibration measurements of thin heat flux sensors for building applications are presented. The findings support the continued development of precision and bias statements for ASTM Practice C 1130. Measurements have been conducted using a 1016 mm diameter

Chemical Mapping of Patterned Polymer Photoresists by Near-Field Infrared Microscopy

May 1, 2001
Author(s)
B Dragnea, J Preusser, J Szarko, L A. McDonough, S R. Leone, W D. Hinsberg
Latent images obtained by deep-ultraviolet (DUV) patterning and post-exposure bake in the polymer system poly(t-butylmethacrylate) resist/triphenyl sulfonium photoacid generator are characterized by infrared near-field microscopy (IR-NSOM). Chemical sub

Comparison of Some Algorithms to Estimate the Low and High State Level of Pulses

May 1, 2001
Author(s)
O. M. Solomon, Donald R. Larson, Nicholas Paulter
The IEEE Subcommittee on Pulse Techniques (SCOPT) of the Instrument and Measurement Society is developing a new standard for pulse analysis which yields pulse parameters such as amplitude, transition duration, overshoot, undershoot, pulse duration, and

Controlled Collapse of a Bose-Einstein Condensate

May 1, 2001
Author(s)
J L. Roberts, N R. Claussen, S L. Cornish, E A. Donley, Eric A. Cornell, C E. Wieman
The point of instability of a Bose-Einstein condensate (BEC) due to attractive interactions was studied. Stable 85Rb BECs were created and then caused to collapse by slowly changing the atom-atom interaction from repulsive to attractive using a Feshbach

Copper-Catalyzed Radiolytic Reduction of CO 2 to CO in Aqueous Solutions

May 1, 2001
Author(s)
J Grodkowski, Pedatsur Neta
Radiolysis of aqueous solutions containing CO 2 and Cu(II) ions under reducing conditions leads first to reduction of the Cu(II) and then to formation of CO. Experiments under various conditions show that although Cu(II) was often reduced to colloidal Cu(0

Defect Controlled Diffusion in the Epitaxial Growth of Germanium on Si(100)

May 1, 2001
Author(s)
C L. Berrie, B Liu, S R. Leone
The growth of germanium films on Si(100) substrates prepared by two different methods is studied using atomic force microscopy and reflection high energy electron diffraction. The first method uses a brief Ar + sputter followed by annealing to desorb the

Effective Medium Theory of the Porosity Dependence of Bulk Moduli

May 1, 2001
Author(s)
R G. Munro
Effective medium theory is used to obtain a closed form expression for the porosity dependence of the bulk moduli of ceramics. The theory is illustrated with an application to data for high purity alumina that spans a volume fraction of porosity ranging

Effects of Nonlinear Diode Junction Capacitance on the Nose-to-Nose Calibration

May 1, 2001
Author(s)
Kate Remley, Dylan Williams, Donald C. DeGroot, Jan Verspecht, John Kerley
We examine the effects of nonlinear diode junction capacitance on the fundamental premise of the noise-to-nose calibration, that the kickout is identical in shape to the impulse response of the sampler. We offer a physical explanation for the error
Displaying 45376 - 45400 of 73697
Was this page helpful?