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.
Standard Reference Material 484 is an artifact for calibration the magnification scale of a Scanning Electron Microscope (SEM) within the range of 1000X to...
Using a computer-controlled resonant-bar apparatus at frequencies near 5 kHz, we determined the temperature-dependent (86-732 K) Young's modulus of a ceramic...
To test their ability to fight high-rise fires, the Louisville Fire Department had to simulate one. And to do that, they needed the help of the National...
Travis M. Eiles, Michel H. Devoret, John M. Martinis
We have measured at low temperatures the current through a submicrometer superconducting island connected to nornal metal leads by ultrasmall tunnel junctions...
This paper investigates the influence of quantization on 3D surface characterization by carrying out an analysis of surface parameter changes on a range of real...
Translational tables now form a vital pan in three-dimensional surface topography systems. In some systems typically. one translational table is used to provide...
The nonadiabatic nature of low-speed combustion and fire, in which strongly exothermic reactions produce large temperature variations but only mild pressure...
Quantitative OH concentrations and primary soot particle sizes have been determined in the soot oxidation regions of axisymmetric diffusion flames burning...
Integrated models of soot production and oxidation are based upon experimental results obtained in steady, laminar flames. For successful application of these...
In order to design robust and stable zone fire modeling algorithms, the numerical properties of computer arithmetic and modeling differential equations must be...
Thomas G. Cleary, Thomas J. Ohlemiller, K M. Villa
A set of upholstered chairs constructed from five different fabric/foam combinations was subjected to a variety of ignition sources suggested by fire statistics...
Experiments in idealized two-layer fire environments have demonstrated that concentrations of carbon monoxide and other gaseous combustion products can be...
A radiometric model has been developed to assess the effects of angular truncation, finite size of the detector, and angle response characteristics of the...
The paper presents a theoretical evaluation of the performance effects resulting from the installation of a liquid-line/suction-line heat exchanger (LLSL-HX)...
The glide-matching study presented in Part 1 was a laboratory investigation which demonstrated the evaporator performance in detail. However, since it was not...