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.
Thermophysical properties are key data needed to design refrigeration equipment using alternatives to the CFC and HCFC refrigerants. The measurement, modeling
The maturity method is a technique to account for the combined effects of time and temperature on the strength development of concrete. The method provides a
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
The Congressional emergency appropriation resulting from the January 17, 1994, Northridge earthquake provided the Building and Fire Research Laboratory (BFRL)
The Object Management Group (the consortium that issues the Common Object Request Broker Architecture and Unified Modeling Language standards) is making the
John L. Gross, M D. Engelhardt, Chia-Ming Uang, K Kasai, N Iwankiw
The Congressional emergency appropriation resulting from the January 17, 1994, Northridge earthquake provided the Building and Fire Research Laboratory (BFRL)
Jon R. Pratt, David B. Newell, Edwin R. Williams, Douglas T. Smith, John A. Kramar
The National Institute of Standards and Technology has launched a five-year project to traceably link the International System of Units (SI) to forces between
The presence of non-ideal flow profiles is known to cause significant metering inaccuracies in conventional pipelines. The characteristics of secondary flows
The National Institute of Standards and Technology was established by an Act of Congress in 1901 as the National Bureau of Standards (NBS). It was charged with
We review a century of metrology research and development in the U.S. that paralleled the birth of radio/wireless and other electromagnetic field technologies
Joy Dunkers, Frederick R. Phelan Jr., Kathleen M. Flynn, D P. Sanders, Richard~undefined~undefined~undefined~undefined~undefined Parnas
In this work, binary images of the microstructure of a unidirectional E-glass/epoxy composite were generated from the low contrast OCT data through image de
William E. Wallace, Charles M. Guttman, B M. Fanconi, Barry J. Bauer
Saturated hydrocarbon polymers, polyethylene and polypropylene, are, by production volume, the most widely used of all synthetic polymers. Their molecular mass
The desorption/ionization process of matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) is not completely understood
S Birla, D -. Faulkner, John L. Michaloski, S -. Sorenson, G Weinert, James H. Yen
With enterprises facing tremendous time-to-market pressures, manufacturing systems must be implemented quickly and modified easily. The ability of the open
A two-photon wmsition in cold Rb atoms will be probed with a phase-coherent wide-bandwidth femtosecond laser comb. Frequency domainanalysis yields a high
Facilities and techniques to characterize heat flux sensors are under development at the National Institute of Standards and Technology. As a part of this
Evaluating collaborative systems is much more difficult than evaluating single-user systems due to the number of simultaneous (synchronous) or intertwined (both
John B. Schlager, Berton Callicoatt, Kevin L. Silverman, Richard Mirin, Norman Sanford, D. L. Veasey
Picosecond pulses are generated from a passively mode-locked ER3+/Yb3+ co-doped planar waveguide laser in an extended cavity configuration with a semiconductor
Kate Remley, Donald C. DeGroot, Jeffrey Jargon, Kuldip Gupta
We address the difficult problem of determining measurement consistency between two vector nonlinear network analyzers, a new class of stimulus-response
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
Claude Weil, Billy F. Riddle, David R. Novotny, Robert T. Johnk
We present numerical data on normalized cutoff wavelength versus cone half-angle for the first three higher-order TE ml modes, as well as four other modes of
Thomas F. Wunsch, Ronald R. Manginell, O. M. Solomon, Joseph R. Kinard Jr., Thomas E. Lipe Jr., K. C. Jungling
New standards for ac current and voltage measurements, thin-film multijunction thermal converters (MJTCs), have been fabricated using thin-film and micro
The IEEE Subcommittee on Pulse Techniques (SCOPT) of the Instrument and Measurement Society is developing a new standard for pulse analysis which yields pulse
An aircraft engine nacelle simulator was built to study the dispersion behavior of CF3I, a potential halon 1301 (CF3Br) replacement, at an extremely cold
Gregory T. Linteris, Vadim D. Knyazev, Valeri I. Babushok
Flame inhibition data exist for a few metallic compounds (Fe(CO)5, Pb(C2H5)4, CrO2Cl2) which show them to be one or two orders of magnitude more effective than