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Displaying 1776 - 1800 of 3908

Flame Extinguishment in a Cup-Burner Apparatus

March 1, 2005
Author(s)
F Takahashi, Gregory T. Linteris, V Katta
Unsteady extinguishment phenomena of laminar methane-air co-flow diffusion flames formed in a cup-burner apparatus at normal earth gravity have been studied experimentally and computationally. A gaseous fire-extinguishing agent (CO 2, N 2, He, Ar, or CF 3H

Measurement of Workability of Fresh Concrete Using a Mixing Truck

March 1, 2005
Author(s)
S Amziane, Chiara C. Ferraris, E Koehler
The main objective of this study is to evaluate the workability of fresh portland cement concrete while it is still in the mixing truck by determining fundamental rheological parameters (plastic viscosity and yield stress). Nine concrete mixtures with

Modeling the IAQ Impact of HHI Interventions in Inner-City Housing

March 1, 2005
Author(s)
Steven J. Emmerich, Cynthia H. Reed
The U.S. Department of Housing and Urban Development (HUD) has identified a need to improve urban housing conditions to protect children s health through its Healthy Homes Initiative (HHI). One critical area within this program is to address a wide range

R-22 Replacement Status (in Portuguese) Part 1 and Part 2

March 1, 2005
Author(s)
J M. Calm, Piotr A. Domanski
Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat pumps, including those for district cooling and heating. Individual

Home Smoke Alarm Tests, Series 1, Report of Test FR 4016

February 1, 2005
Author(s)
Richard D. Peacock, Jason D. Averill, Richard W. Bukowski, Paul A. Reneke
This report documents the first test series in the program conducted to characterize the test environment. Data presented include CO, CO2, O2, smoke obscuration, and temperature. Additional measurement of smoke particle size and concentration, additional

Measurement of the Optical Extinction Coefficient of Combustion-Generated Aerosol

February 1, 2005
Author(s)
J F. Widmann, J X. Duchez, Joseph M. Conny, George W. Mulholland
This note describes mesurements of the optical extinction coefficient of carbonaceous aerosol produced during hydrocarbon combustion. Measurements of the mass specific extinction coefficient were obtained by laser extinction at 632 nm wavelength. The

Mixture Proportioning for Internal Curing

February 1, 2005
Author(s)
Pietro Lura, J W. Roberts
A methodology is presented for the mixture proportioning of ordinary Portland cement concretes to supply internal curing via the addition of saturated lightweight fine aggregates. The necessary internal curing water is calculated to balance the water

Design, Development and Testing of a Hybrid Device for In-Situ Testing of Sealant

January 19, 2005
Author(s)
Christopher C. White, E Embree, C Buch
A new hybrid in-situ sealant-testing device that uses movement to both characterize and fatigue standard ASTM C719 sealant samples is described. This five sample device, records the force-response data for every deformation cycle of every sample. From this

Workshop to Define Information Needed by Emergency Responders During Building Emergencies

January 3, 2005
Author(s)
Walter W. Jones, William D. Davis, D D. Evans, David G. Holmberg, Steven T. Bushby, K A. Reed
On May 3, 2004, NIST sponsored a workshop to identify the information needs for emergency responders. The purpose of this workshop was to obtain guidance on the type of building static and dynamic tactical information needed by public safety officials, how

Characterization of a 2-D Pool Fire Simulator

January 1, 2005
Author(s)
P J. Disimile, John M. Davis
The current paper introduces a facility to be used for the investigation of fire suppressant transport and pool fire extinction in an environment similar to an aircraft engine nacelle. This work is done as part of an ongoing effort to develop a suppressant

Extinguishment of Cup-Burner Flames in Low Gravity

January 1, 2005
Author(s)
F Takahashi, Gregory T. Linteris, V Katta
The effects of oxidizer stream velocity and oxygen concentration, as well as gravity and pressure, on the extinguishment limits of laminar co-flow diffusion flames of methane, formed in a cup-burner apparatus, have been studied experimentally and

Flammability of Nanocomposites-Effects of the Shape of Nanoparticles

January 1, 2005
Author(s)
Takashi Kashiwagi
Nanocomposites based on three different shapes of nanoscale particles, sphere (silica), plate (clay), and tube (carbon nanotube), were prepared and the dispersion of the particles in the nanocomposites was confirmed by various techniques using TEM, SEM
Displaying 1776 - 1800 of 3908
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