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Displaying 2226 - 2250 of 3904

Extinction of Cup-Burner Diffusion Flames by Catalytic and Inert Inhibitors

December 1, 2002
Author(s)
Gregory T. Linteris
The first tests of super-effective flame inhibitors blended with CO2 have been performed in methane-air co-flow diffusion flames. Although the organometallic agents used are typically one or two orders of magnitude more effective inhibitors than CF3Br when

Future of Fire Simulation

December 1, 2002
Author(s)
Kevin B. McGrattan, Howard R. Baum, Ronald G. Rehm, Glenn P. Forney, Kuldeep R. Prasad
Scientists and engineers are often asked to make predictions of the state of technology in the future and are usually laughably wrong. The best prognosticators get the trends right, but cannot possibly fill in the details. Think of Jules Verne predicting a

Hole Growth Instability in the Dewetting of Evaporating Polymer Solution Films

December 1, 2002
Author(s)
Xiaohong Gu, D T. Raghavan, Jack F. Douglas, Alamgir Karim
We investigate the dewetting of aqueous, evaporating polymer [poly(acrylic acid)] solutions cast on hydrophobic (polystyrene) substrates. As with typical dewetting, the evaporating films initially break up through the nucleation of holes that perforate the

Polymer/Layered Silicate Nanocomposites from Thermally Stable Trialkylimidazolium-Treated Montmorillonite.

December 1, 2002
Author(s)
Jeffrey W. Gilman, W H. Awad, Rick D. Davis, John R. Shields, Richard H. Harris Jr., C H. Davis, A B. Morgan, T E. Sutto, J H. Callahan, Paul C. Trulove, H DeLong
The limited thermal stability of alkylammonium cations intercalated into smectite minerals (e.g., montmorillonite, MMT) and the processing instability of some polymers [polyamide-6 (PA-6) and polystyrene (PS)] in the presence of nanodispersed MMT have

Acoustophoretic Characterization of Cement Suspensions

November 1, 2002
Author(s)
Robert J. Flatt, Chiara C. Ferraris
Acoustophoresis has been used to study the evolution of the surface potential of hydrating cement suspensions because it is potentially capable of measuring zeta potentials of cement suspensions at concentrations high enough not to modify ion/particle

Calculation of Obstructed View Factors by Adaptive Integration

November 1, 2002
Author(s)
George Walton
This report describes the use of adaptive integration for the calculation of view factors between simple convex polygons with obstructions. The accuracy of the view factor calculation is controlled by a convergence factor. The adaptive integration method

CONTAMW 2.0 User Manual

November 1, 2002
Author(s)
William S. Dols, George Walton
This manual describes the computer program CONTAMW version 2.0 developed by NIST. CONTAMW is a multizone indoor air quality and ventilation analysis program designed to help you determine: airflows and pressures infiltration, exfiltration, and room-to-room

Database-Assisted Design and Wind Directionality Effects

November 1, 2002
Author(s)
A Rigato, P C. Chang, Emil Simiu
We present a simple methodology, developed for use in design assisted by electronic aerodynamic and climatological databases (for short, database-assisted design), that allows a realistic assessment of wind directionality effects. We apply the methodology
Displaying 2226 - 2250 of 3904
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