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Displaying 1326 - 1350 of 1415

Polycyclic Aromatic Hydrocarbons in Flames, in Diesel Fuels, and in Diesel Emissions

December 1, 2005
Author(s)
R Dobbins, Robert A. Fletcher, Bruce A. Benner Jr., S Hoeft
… in mass from 128 u (x=10, y=8) to beyond 350 u (x=28, y=14). The y vs. x graphs of the species found by many … benzenoid PAHs. In contrast, diesel fuels from the UK [1] and the US [2, 3] contain petrogenic alkyl-PAHs with high … from pyrogenic PAHs by methods of chemical analysis.1. Williams, P. T., et al., Fuel 65, 1150 (1986).2. Schauer, …

Chemical Warfare Agent Detection Using MEMS Microsensor Arrays

August 1, 2005
Author(s)
Douglas C. Meier, C J. Taylor, Richard E. Cavicchi, Edward White V, M W. Ellzy, K B. Sumpter, Stephen Semancik
… films are grown. Sensor stability studies carried out for 14 hours in GB exhibit 20% signal variation; similar studies …

A Thermodynamic Study of the Reactions: 2-Dehydro-3Deoxy-D-Arabino-Heptanoate 7-Phosphate(aq) = {3-Dehydroquinate (ag) + Phosphate (aq)} and {3-Dehydroquinate(aq) =3-Dehydroshikimate(aq) + H 2 O(l)}

October 1, 2002
Author(s)
Yadu D. Tewari, Robert N. Goldberg, A R. Hawkins, H K. Lamb
… equilibrium constant for the second reaction was K' = (4.6 1.5) (Hepes buffer, temperature T = 298.15 K, pH = 7.50, and ionic strength Im = 0.065 mol kg -1 ). Calorimetric measurements led to a molar enthalpy of … reaction and led to the value K{nearly equal to} 2 10 14 for this reaction. Values of the apparent equilibrium …

Refrigerant Flow Through Flexible Short-Tube Orifices

April 1, 2002
Author(s)
William V. Payne, Y C. Kim, Dennis L. O'Neal, Mohsen Farzad
… tests for an R-22/lubricant mixture (mass fraction of oil 1.2%) were performed with two flexible short-tube orifices to … value of 9860 kPa. Both short tubes had identical lengths (14.5 mm), entrance diameters (2.06 mm), and exit diameters …

Advanced Propellant/Additive Development for Fire Suppressing Gas Generators

January 1, 2000
Author(s)
Stephen Fallis, Russell Reed, Paul Wierenga, Gary Holland, Yue-Cherng Lu
The “Advanced Propellant/Additive Development for Gas Generator” project is a collaborative effort between Primex Aerospace Company (PAC) and the Naval Air Warfare Center-Weapons Division (NAWCWD) at China Lake, CA. The objective of this NGP project is to

Remineralization Effects of A Two-Solution Fluoride Mouthrinse: An in situ Study

October 1, 1999
Author(s)
Laurence C. Chow, Shozo Takagi, Clifton M. Carey, B A. Sieck
… Each of the seven subjects wore such an appliance for 14 days continuously except during subject's eating, drinking … breakfast and before bedtime) the subjects received a 1 min rinse with 20 mL of (1) 250 ppm F NaF rinse, (2) 1000 ppm F NaF rinse, or (3) 228 …

Conformational Changes in the Crystal Structure of Rat Glutathione Transferase M1-1 with Global Substitution of 3-Fluorotyrosine for Tyrosine

August 14, 1998
Author(s)
G Xiao, J F. Parsons, K Tesh, R N. Armstrong, G L. Gilliland
… The structure of the tetradeca-(3-fluorotyrosyl) M1-1 GSH transferase (3-Ftyr GSH transferase), a protein in … structure of such a protein containing a library of 14 (28 crystallographically distinct) microenvironments from … in the Crystal Structure of Rat Glutathione Transferase M1-1 with Global Substitution of 3-Fluorotyrosine for Tyrosine …

Carbon Monoxide Formation in Fires by High-Temperature Anaerobic Wood Pyrolysis

July 31, 1994
Author(s)
William M. Pitts, Erik L. Johnsson, Nelson P. Bryner
… only by natural gas. Volume concentrations as high as 14% were observed. The fires with wood in the upper layer had … of this work based on the experimental findings are: 1) the pyrolysis of wood in a highly vitiated, high … majority of released carbon being converted to a roughly 1:1 mixture of CO and CO2. …

Wind-driven Fire Spread to a Structure from Firewood Piles

March 30, 2023
Author(s)
Erik L. Johnsson, Kathryn Butler, Marco G. Fernandez, Shonali Nazare, Alexander Maranghides
… wind machine provided a mean wind speed between 6 m/s and 14 m/s (13 mi/h to 31 mi/h). The woodpiles were ignited by a …

Spectrometer stray light can bias retrievals of solar-induced fluorescence

May 14, 2019
Author(s)
Loren Albert, Katherine Cushman, Yuqin Zong, David Allen, Luis Alonso, James Kellner
… matrix such that stray light was approximately 10-1, 10-2, 10-3, and 10-4 of the measured radiance, … simulated stray light introduced a mean bias on SIF of 21.14 % for sFLD and 7.275 % for 3FLD retrievals. By contrast, …

Racial Disparity in Maternal Phthalates Exposure; Association with Racial Disparity in Fetal Growth and Birth Outcomes

April 10, 2019
Author(s)
Michael S. Bloom, Abby G. Wenzel, John W. Brock, Rebecca J. Wineland, Lori Cruze, Elizabeth R. Unal, Assem Jiyessova, Roger B. Newman, John Kucklick
… (p=0.03), indicating an association among whites (β=-0.14; 95%CI: -0.28, 0.001) but not among African Americans … (β=0.05; 95%CI=-0.09, 0.50). MiBP (OR=2.84; 95%CI: 1.22, 6.61) and MEOHP (OR=2.79; 95%CI: 1.05, 7.41) were associated with an overall higher SGA risk, …
Displaying 1326 - 1350 of 1415
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