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Displaying 51801 - 51825 of 73892

The Effect of Supply Air Volume on Room Temperature Stability and Uniformity

August 3, 1998
Author(s)
Stephen J. Treado, Natascha S. Milesi-Ferretti
The effect of supply airflow rate on the thermal conditions in a high-accuracy temperature controlled laboratory space was investigated using the NIST/BFRL Temperature Control Module. Detailed measurements were conducted of air and surface temperatures

Flame Extinction by Sodium Bicarbonate Powder in a Cup Burner

August 2, 1998
Author(s)
Anthony P. Hamins
An apparatus was developed for testing the extinction efficiency of a solid powder in a coflowing non-premixed flame. Extinction measurements were performed by adding agent quasistatically to the oxidizer stream until flame extinction was observed. The

14 C Measurements of Sub-Milligram Carbon Samples From Aerosols

August 1, 1998
Author(s)
R Weissenbok, S R. Biegalski, D Klinedinst, R Golser, George A. Klouda, W Kutschera, A Priller, William N. Rom, P Steier, E Wild, Lloyd A. Currie, R F. Sekerka
Accelerator mass spectrometry [AMS] at the milligram level is routinely performed, but it is difficult to go substantially below 100 ug of carbon. We discuss various approaches for sample preparation, machine operation, and data evaluation, to meet the

A Robust Ontology for Manufacturing Systems Integration

August 1, 1998
Author(s)
Amy Knutilla, Craig I. Schlenoff, Robert W. Ivester
In all types of communication, the ability to share information is often hindered because the meaning of information can be drastically affected by the context in which it is viewed and interpreted. This is especially true in manufacturing because of the

Aerodynamic Databases and Electronic Standards for Windloads

August 1, 1998
Author(s)
T Whalen, Emil Simiu, G Harris, J Y. Lin, D Surry
As part of ongoing National Institute of Standards and Technology research on the development of a new generation of standard provisions for wind loads, we present results of a pilot project on the knowledge-based estimation of wind-induced bending moments

AMS and Microprobe Analysis of Combusted Particles in Ice and Snow

August 1, 1998
Author(s)
S R. Biegalski, George A. Klouda, R Weissenbok, Lloyd A. Currie, Robert A. Fletcher
Ice cores and snow pits of the cryosphere contain particles that detail the history of past atmospheric air compositions. Some of these particles result from combustion processes and have undergone long-range transport to arrive in the Arctic. Recent

Analysis of Sea-Floor Earthquake Data

August 1, 1998
Author(s)
C E. Smith, D M. Boore
The Minerals Management Service (MMS), in cooperation with several oil and gas companies, installed a seismometer network on the ocean floor in the Santa Barbara Channel off the coast of southern California. The program was called SEMS, for the Seafloor

Atomic And Molecular Data And Their Applications

August 1, 1998
Author(s)
Wolfgang L. Wiese
The first International Conference on Atomic and Molecular Data And Their Applications (ICAMDATA) took place at the National Institute of Standards and Technology, Gaithersburg, MD USA, September 29 through October 2, 1997, with 180 participants from 20

Burning Behavior of Selected Automotive Parts From a Minivan.

August 1, 1998
Author(s)
Thomas J. Ohlemiller, John R. Shields
Selected functional parts from a minivan were subjected to a gas flame ignition source and burned in a manner that allowed measurement of the resulting total heat release rate, mass loss and heat fluxes to the surroundings. This study was undertaken to: (1
Displaying 51801 - 51825 of 73892
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