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.
An official website of the United States government
Here’s how you know
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.
R22 and R410A split air-conditioning systems were tested and compared as outdoor temperature ranged form 27.8 oC (82.0 oF) to 54.4 oF (130 oF). The R410A system
B G. Boone, R S. Bokulic, G B. Andrews, R L. Mcnutt, Nicholas Dagalakis
The concept of a realistic interstellar explorer has been addressed by the Johns Hopkins University Applied Physics Laboratory (JHU/APL) with support from the
B G. Boone, R S. Bokulic, G B. Andrews, R L. Mcnutt, Nicholas Dagalakis
The concept of a realistic interstellar explorer has been addressed by the Johns Hopkins University Applied Physics Laboratory (JHU/APL) with support from the
J Seely, Lawrence T. Hudson, J. Weaver, G Holland, C N. Boyer
Spectrometers have been developed to record x-ray spectra in the energy range 50 eV to 60 keV. The dispersion elements are transmission crystals for energies
This paper will describe the autonomous mobility controller used under the U.S. Army sponsored Demo III eXperimental Unmanned Vehicle (XUV) project. The
Jean C. Scholtz, Emile L. Morse, Sharon J. Laskowski, A Wishansky, K Butler
The paper describes the Common Industry format (CIF) developed in the Industry Usability Reporting Project (IUSR), which is now an ANSI standard. Four pilot
Characteristics of the empirically developed Rockwell hardness test make it difficult to determine measurement uncertainty using methods traditionally applied
Ursula R. Kattner, G Eriksson, I Hahn, R Schmid-fetzer, Bo Sundman, V Swamy, A Kussmaul, P J. Spencer, T J. Anderson, T G. Chart, A Costa e Silva, B Jansson, B J. Lee, M Schalin
The strongly related nature of the topics allocated to Groups 4 and 5 was such that a close interaction between the two groups appeared essential at all stages
Ni-base alloys are the most widely used superalloys in applications involving high temperatures and severe environmental conditions. To model the various
Christopher E. Dabrowski, Kevin L. Mills, J R. Elder
Current trends suggest future software systems will comprise collections of components that combine and recombine dynamically in reaction to changing conditions
The United States has participated in two major worldwide comparisons of Rockwell hardness scales over the past twenty years. In 1983, fourteen countries
Steven J. Emmerich, Andrew K. Persily, Steven J. Nabinger
Multizone airflow and contaminant transport modeling is a valuable tool for researchers and others studying indoor air quality (IAQ) problems in buildings
The author presented two talks at the IUPAC/CAS conference of Chemical identifiers and XML in Chemistry, on July 1, 2002 in Columbus Ohio. He will be sending
Fahim Sadek, M Ben Ftima, S El-Borgi, G P. McCormick, Michael A. Riley
This paper presents a robust static output feedback H(infinity) algorithm for control of hysteretic civil engineering structures subjected to earthquake ground
NIST is responsible to U.S. industry for developing length intensive measurement capabilities and calibration standards in the nanometer scale regime. The
Prototype testing of passive energy dissipation devices is required to verify their response characteristics and demonstrate their capacity to withstand the
John S. Villarrubia, Andras Vladar, J R. Lowney, Michael T. Postek
Optical scatterometry has attracted a great deal of interest for linewidth measurement due to its high repeatability and capability of measuring sidewall shape
Numerical and experimental methods are used to investigate the effectiveness of infrared thermography to estimate the width of subsurface flaws in fiber
Richard M. Silver, Ravikiran Attota, Michael T. Stocker, Jay S. Jun, Egon Marx, Robert D. Larrabee, B Russo, M P. Davidson
In this paper we describe a new method for the separation of too-induced measurement errors and sample-induced measurement errors. We apply the method to
Most building structures today are designed using the response modification factors (R-factors) given in the code for different types of structural systems
An interlaboratory comparison has been undertaken of X-ray and photoluminescence measurements of InGaAsP on InP. Six 1 cm 2 specimens are being measured, with
WebCAT is a rapid, remote, and automated method for performing card sorting. WebCAT, a tool from the NIST Web Metrics Testbed, provides a web-based interface
The promise and challenge of nanotechnology is immense. The National Nanotechnology Initiative provides an opportunity to develop a new technological base for U
William E. Wallace, Charles M. Guttman, Anthony J. Kearsley, Javier Bernal
A mathematical algorithm is presented that accurately locates and calculates the area beneath peaks using only reproducible mathematical operations and a single
Laser scanning confocal microscopy (LSCM) has been applied to examine the filler particles and their distribution in BaTiO3-polymer composite films. We have
Joseph A. Stroscio, E Hudson, Steven R. Blankenship, Robert Celotta, Aaron P. Fein
We describe the development of an experimental system, consisting of a low temperature scanning tunneling microscope coupled to UHV tip and sample preparation
Integrating sphere reflectometers are used in the majority of instruments used for spectral reflectance measurements of non-specular (scattering) samples