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Displaying 1626 - 1650 of 2521

Analysis of arson fire debris by low temperature dynamic headspace adsorption porous layer open tubular columns

February 7, 2014

Author(s)

Thomas J. Bruno, Tara Lovestead, Jessica Nichols, Megan E. Harries

… as short as 3 min, and on PLOT capillaries as short as 20 cm. The variability of separate samples was also assessed, …

Exploratory Study of Airflow from SCBA Exposed to Elevated Temperatures

September 18, 2013

Author(s)

Michelle K. Donnelly, Daniel M. Madrzykowski, Anthony D. Putorti Jr.

… between 100 ºC and 200 ºC for time durations up to 1200 s (20 min). The temperature of the air from the SCBA was …

Precise conductance measurements of a pinhole orifice using a constant-pressure flowmeter

December 1, 2012

Author(s)

James A. Fedchak, Dana R. Defibaugh

… measurements for an orifice of nominal diameter 20 μm. The N2 conductance of this orifice ranged from 30 μL/s …

First high-resolution analysis of the nu15, nu12, nu5, nu10 and nu2 bands of oxirane

January 15, 2012

Author(s)

Walter J. Lafferty, Jean-Marie Flaud, F. Kwabia Tchana, A. Perrin

… have been recorded in the 730 cm-1 to 1560 cm-1 (6.4 to 13.7 µm) spectral region using a Bruker IFS125HR spectrometer at … ν0 (ν15) = 808.13462(30) cm-1, ν0 (ν12) = 822.27865(20) cm-1, ν0 (ν5) =876.72483(10), ν0 (ν3) = 1270.37032(10) …

Evolution of Ultrafine Particle Size Distributions Following Indoor Episodic Releases: Relative Importance of Coagulation, Deposition and Ventilation

November 15, 2011

Author(s)

Dong H. Rim, Lance L. Wallace, Andrew K. Persily, Jung I. Choi

… should be considered during high concentration periods (> 20, 000 cm-3), while particle deposition should be treated as …

Origin and Early History of Die Methode des Eichzusatzes or The Method of Standard Addition with Primary Emphasis on Its Origin, Early Design, Dissemination, and Usage of Terms

June 1, 2011

Author(s)

William R. Kelly, Kenneth W. Pratt, William F. Guthrie, Keith R. Martin

… atomic spectroscopy, almost simultaneously in 1953, almost 20 years after Hohns original description. …

Inter-ion Coulomb interactions in a Magneto-Optical Trap Ion Source

May 19, 2011

Author(s)

Jabez J. McClelland, Brenton J. Knuffman, Adam V. Steele

… the fraction of the beam current that passes through a 20 μm diameter aperture. The Monte Carlo simulations agree …

A Microwave Study of Hydrogen-Transfer-Triggered Methyl-Group Rotation in 5-Methyltropolone

November 10, 2010

Author(s)

Vadim V. Ilyushin, Emily A. Cloessner, Yung-Ching Chou, Laura B. Picraux, Jon T. Hougen, Richard Lavrich

… of 5-methyltropolone, which can be visualized as a 7-membered aromatic carbon ring with a five-membered … formalism. Our global fit of 1015 transitions to 20 molecular parameters gave a root-mean-square deviation of …

10 Volt Programmable Josephson voltage standard circuits using NbSi-barrier junctions

October 28, 2010

Author(s)

Paul D. Dresselhaus, Mike Elsbury, David I. Olaya, Charles J. Burroughs, Samuel P. Benz

… (PJVS) circuits were developed that operate at 16 GHz to 20 GHz with operating margins larger than 1 mA. Two circuit …

Detection of Poultry Spoilage Markers from Headspace Analysis with Cryoadsorption on a Short Alumina PLOT Column

August 15, 2010

Author(s)

Tara Lovestead, Thomas J. Bruno

… The headspace was then sampled by cryoadsorption for 10, 20 or 30 minutes, and the analytes were identified and …

A NIST Disciplined Oscillator

July 26, 2010

Author(s)

Michael A. Lombardi

… These outputs provide time accurate to within about ±20 ns (peak-to-peak variation) with respect to UTC(NIST) and …

Safely mounting glass viewports to elastomer sealed vacuum flanges

June 17, 2010

Author(s)

Patrick J. Abbott, Brian R. Scace

… adapter flange that allows the safe sealing of a 20 cm diameter glass viewport to an aluminum O-ring flange …

Ultraviolet Weathering of Firefighter Protective Clothing

June 4, 2010

Author(s)

Rick D. Davis, Joannie W. Chin, Chiao-Chi Lin, Sylvain H. Petit

… by these conditions as it maintained approximately 20 % more of its mechanical properties. These conditions also …

Accelerated weathering of polyaramid and polybenzimidazole firefighter protective clothing fabrics

May 10, 2010

Author(s)

Rick D. Davis, Joannie W. Chin, Chiao-Chi Lin, Sylvain H. Petit

… by these conditions as it maintained approximately 20% more of its mechanical properties. These conditions also …

Thin film morphology of organic electronic materials

March 1, 2010

Author(s)

Xinran Zhang, Steven Hudson, Dean DeLongchamp, David J. Gundlach

… for this behavior; the grains comprise nanocrystals ( 20 nm) with distributed orientations. …

Microsensors in Dynamic Backgrounds: Toward Real-Time Breath Monitoring

January 15, 2010

Author(s)

Kurt D. Benkstein, Baranidharan Raman, Christopher B. Montgomery, C Martinez, Stephen Semancik

… environment was periodically altered between air (20% relative humidity) and simulated breath (77% nitrogen, …

Ab initio kinetic coefficients of gaseous hydrogen

January 9, 2010

Author(s)

James B. Mehl, Marcia L. Huber, Allan H. Harvey

… three experimental data sets for parahydrogen spanning 20 275 K was (−0.8 1.2)%. …

Thermodynamic Properties of Propane. I. p-r-T Behavior from 265 to 500 K with Pressures to 36 MPa

November 23, 2009

Author(s)

Mark O. McLinden

The p-ρ-T behavior of high-purity (99.999%) propane was measusred from 265 K to 500 K with pressures to 36 MPa with a two-sinker densimeter. The measurements extend from low-density vapor to compressed liquid states, and the extended critical region was

INSTRUMENT FOR DETERMINING THE COMPLEX SHEAR MODULUS OF SOFT-TISSUE-LIKE MATERIALS FROM 10 TO 300 Hz

September 15, 2009

Author(s)

Ernest L. Madsen, G R. Frank, M A. Hobson, Sheng Lin-Gibson, T J. Hall, J Jiang, T A. Stiles

… a brief report by Arbogast et al (1997), operates between 20 and 160 Hz, but results also appear to violate the K-K …

Broadband lumped-element integrated n-way power dividers for programmable Josephson voltage standards

August 12, 2009

Author(s)

Mike Elsbury, Paul D. Dresselhaus, Norman F. Bergren, Charles J. Burroughs, Samuel P. Benz, Zoya Popovic

… lumped-element Wilkinson power divider centered at 20 GHz, which was designed and fabricated to uniformly …

Automated Extraction of Thunderstorm and Non-Thunderstorm Wind Data Sets From Archived Weather Reports

April 18, 2009

Author(s)

Franklin T. Lombardo, Joseph A. Main

… three stations near New York City over a period of about 20 years. …

Spectrally resolved optical frequency comb from a self- referenced 5 GHz femtosecond laser

September 1, 2007

Author(s)

Albrecht Bartels, Raphael Gebs, Matthew S. Kirchner, Scott A. Diddams

… power) from their neighbors with contrast greater than 20 dB. The expected spatial distribution of adjacent modes is …

Hydrosomes: Femtoliter Containers for Fluorescence Spectroscopy Studies

August 30, 2007

Author(s)

Ana Jofre, Jianyong Tang, M E. Greene, G M. Lowman, N Hodas, Rani B. Kishore, Kristian Helmerson, Lori S. Goldner

We report on improvements and innovations in the use of hydrosomes to encapsulate and study single molecules. Hydrosomes are optically-trappable aqueous nanodroplets. The droplets are suspended in a fluorocarbon medium that is immiscible with water and has

Effect of Fatigue under Transverse Compressive Stress on Slitted Y-Ba-Cu-O Coated Conductors

June 1, 2007

Author(s)

Najib Cheggour, John (Jack) W. Ekin, C. L. H. Thieme, Y Y. Xie

… testing up to 150 MPa transverse compressive stress and 20,000 cycles. Nevertheless, the results do not imply that …

Temperature and Pressure Coefficients of Thomas 1 Ohm Resistors

August 1, 2006

Author(s)

George R. Jones Jr., Randolph Elmquist

… battery of thermal and pressure tests at temperatures from 20 ?C to 26 ?C and at pressures from 80 kPa to 110 kPa. Tests …

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