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Displaying 54226 - 54250 of 74067

The Mobilities of Ions and Cluster Ions Drifting in Polar Gas

April 1, 1997
Author(s)
J A. de Gouw, M Krishnamurthy, S R. Leone
The mobility of ions drifting in polar gases is explored both theoretically and experimentally. New expermental results are presented for (1) NO+ ions drifting in H 2O (the resuced zero-field mobility K 0 (0) is 0.66+or-}0.07 cm 2V -1s -1), (2) H 3O+(H6d2

Experimental Validation in Software Engineering

March 24, 1997
Author(s)
M V. Zelkowitz, D Wallace
Although experimentation is an accepted approach toward scientific validation in most scientific disciplines, it only recently has gained acceptance within the software development community. In this paper we discuss a 12-model classification scheme for

Algorithm for Estimating Carbon Monoxide Formation in Enclosure Fires

March 3, 1997
Author(s)
William M. Pitts
This paper introduces an engineering approach for estimating the generation rate of carbon monoxide (CO) within a room containing a fire. Four CO formation mechanisms: 1) quenching of a turbulent fire plume upon entering a rich upper layer, 2) mixing of

Analysis of Fire and Non-Fire Signatures for Discriminating Fire Detection

March 3, 1997
Author(s)
J A. Milke, T J. McAvoy
The characteristics of an improved fire detector which promptly reacts to smoke while discriminating between airborne signatures from fire and non-fire sources can be identified by considering signature patterns of each group of sources. Discrimination is

Effect of Sample Size on the Heat Release Rate of Charring Materials

March 3, 1997
Author(s)
S J. Ritchie, Kenneth D. Steckler, Anthony P. Hamins, Thomas G. Cleary, Jiann C. Yang, Takashi Kashiwagi
The burning of a horizontal wood slab situated atop an insulating substrate was modeled using three coupled submodels for the gas-phase, wood, and substrate processes. A global analytical model was used to determine the radiative and convective heat

Human Behavior in the World Trade Center Evacuation

March 3, 1997
Author(s)
R F. Fahy, Guylene Proulx
An explosion below the World Trade Center plaza in New York City on February 26, 1993, killed six workers, and resulted in injuries to over 1,000 occupants as they made their way out of the affected buildings. The explosion and subsequent fire caused

Three Dimensional Modeling of Intumescent Behavior in Fires

March 3, 1997
Author(s)
Kathryn M. Butler, Howard R. Baum, Takashi Kashiwagi
A method of studying the swelling and thermal behavior of intumescent materials using understanding of the basic physical and chemical processes is described. The material is treated as a highly viscous fluid with properties dependent on temperature. the

Analysis of Partially Grouted Masonry Shear Walls

March 1, 1997
Author(s)
P B. Shing, L Cao
Six partially grouted reinforced masonry shear walls that were tested at NIST are analyzed in this study. The main aim of the study is to assess the capability of some state-of-the-art finite element models in predicting the behavior of these wall
Displaying 54226 - 54250 of 74067
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