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Experimental data were collected for the purpose of validating multiphase combustion models and submodels. A spray combustor was fabricated that permits well
Active cavity radiometers (ACRs) have been used for years to measure solar radiation and Earth radiation from low Earth orbit. Extant space-flight ACRs were
Spiral inductors that are fabricated through a CMOS process, are micromachined by using a new post-processing procedure. In this new technique, the inductors
V. Milanovic, M. Hopcroft, C. A. Zincke, Michael Gaitan, Mona E. Zaghloul
Micromachined power sensors with operation up to 50 GHz were recently achieved in CMOS technology. to improve their sensitivity and signal-to-noise ratio, while
Dean G. Jarrett, Ronald F. Dziuba, Marlin E. Kraft
NIST-built 10 T ω and commercial 1 T ω standard resistors were hand carried between NIST and Sandia for a high resistance comparison. The comparison tested the
Mark R. VanLandingham, Xiaohong Gu, D T. Raghavan, Tinh Nguyen
Recent advances have been made on two fronts regarding the capability of the atomic force microscope (AFM) to characterize the mechanical response of polymers
We will describe a new causal power-normalized waveguide equivalent-circuit theory and explore its implications. The new theory marries a power normalization
Gale A. Holmes, Donald L. Hunston, Walter G. McDonough, R C. Peterson
Precise measurements of fiber break regions formed during the single fiber fragmentation testing procedure indicate that the calculated interfacial shear
We consider the role of constraints in maintaining both secrecy and integrity in a multilevel secure database. In a multilevel database, certain integrity and
The Web has emerged as a dominant mode of making information available and is increasingly seen as the medium to support collaboration across boundaries of
A portable high accuracy double spectrometer for ultraviolet (UV) spectral irradiance measurements has been under development at the National Institute of
We have made a study of the turn-around time performance for the calibration services offered by the Process Measurements Division. The calibration process was
NIST has changed its primary standard for air speed measurements from a Pitot tube to a fiber optic laser Doppler anemometer (LDA). In earlier times, the Pitot
Specular gloss is the attribute of an object that causes it to have a shiny or lustrous appearance, and is commonly used to quantitatively evaluate appearance
C J. Wieczorek, U Vandsburger, B Lattimer, C McKay
Lifestyle developments on the global scale which manifest themselves in increased travel, increased elderly populations in assisted care facilities, and
In order to undertake engineering analyses and designs that can be readily accepted by building and fire authorities, fire protection engineers need engineering
A one-dimensional model describing the melting, degradation, and bubbling behavior of polypropylene exposed to a high heat flux is presented. The region of
Thomas G. Cleary, Artur A. Chernovsky, William L. Grosshandler, Michael D. Anderson
It is well documented that alarm signals from spot-type smoke detectors (ionization and photoelectric) are delayed when the threshold value has been achieved
Kevin B. McGrattan, Anthony P. Hamins, Glenn P. Forney
The International Fire Sprinkler, Smoke & Heat Vent, Draft Curtain Fire Test Project organized by the National Fire Protection Research Foundation (NFPRF)
We discuss three computerized databases distributed by the Standard Reference Data (SRD) program of NIST, which are of interest to the natural gas industry.
The Fluid Flow Group (FFG) at NIST maintains flow standards to perform calibrations of gas flowmeters over the 3.7 x 10 -2 L/min to 78,000 L/min flow range
We examine the utility of the lattice Boltzmann method for modeling fluid flow in porous media. First the lattice Boltzmann method is validated for the case of
This paper presents a new approach for predicting the rheological properties of concrete from rheological measurements on cement paste and from concrete
Accurate measurement of electronic displays has become important in recent years owing to the advances in flat panel display technologies. A well-defined
In recent work at the National Institute of Standards and Technology the Atomic Spectroscopy Group has characterized several sources of wavelength standards
A R. Kalukin, Zachary H. Levine, Charles S. Tarrio, S P. Frigo, I McNulty, S S. Wang, C C. Retsch, M Kuhn, B Winn
Atrifacts induced by distortions which sometimes occur in two-dimensional projection images can appear in the resulting tomographic reconstructions. We describe
Scattering of electromagnetic waves by homogeneous dielectric or finitely conducting bodies can be reduced to the solution of integral equations. In the simpler
The triple revolutions caused by advanced computers, advanced informatics and the Internet have changed forever the way scientific and technical data are stored