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Displaying 1226 - 1250 of 1910

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

December 1, 2012

Author(s)

James A. Fedchak, Dana R. Defibaugh

… 20 μm. The N2 conductance of this orifice ranged from 30 μL/s to 60 μL/s over the range of pressures investigated, …

NIST/ISAC standardization study: variability in assignment of intensity values to fluorescence standard beads and in cross calibration of standard beads to hard dyed beads

August 28, 2012

Author(s)

Lili Wang

… fluorescein SRM 1932, Nile Red, APC and Coumarin 30, respectively. The four surface labeled microsphere …

Engineered two-dimensional Ising interactions on a trapped-ion quantum simulator with hundreds of spins

April 26, 2012

Author(s)

Joseph W. Britton, Brian C. Sawyer, Adam Keith, C.-C. Joseph Wang, James K. Freericks, Hermann Uys, Michael Biercuk, John J. Bollinger

… N-body entanglement become intractable for as few as N ~ 30 particles. Feynman divined that a quantum simulator – a …

NIST Ionization Chamber "A" Sample-Height Corrections

February 2, 2012

Author(s)

Ryan P. Fitzgerald

… For over 30 years scientists in the NIST radioactivity group have been …

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

… following band centers were derived: ν0 (ν15) = 808.13462(30) cm-1, ν0 (ν12) = 822.27865(20) cm-1, ν0 (ν5) …

Volatile Organic Compound Concentrations and Estimation of Optimal Source Strengths to Achieve a High Level of Acceptance Indoors using Multi- Zone Simulation

June 5, 2011

Author(s)

Helena Jarnstrom, William Stuart Dols, Cynthia H. Reed, Andrew K. Persily

… single VOC concentration levels of less than 300 µg/m3, 30 µg/m3, and 10 µg/m3 , respectively, the specific emission …

Quantitative Subsurface Contact Resonance Force Microscopy of Model Polymer Nanocomposites

March 16, 2011

Author(s)

Jason P. Killgore, Jennifer Y. Kelly, Christopher M. Stafford, Michael J. Fasolka, Donna C. Hurley

… nm silica nanoparticles buried beneath polystyrene films 30 nm to 165 nm thick. The presence of shallowly buried …

Scientific Issues with Analysis of Low Amounts of DNA

September 7, 2010

Author(s)

John Butler, Becky Steffen

… of allele and locus drop-out and allele drop-in using 10, 30, and 100 picograms (pg) with several commercially …

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

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

Standard Photoacoustic Spectrometer: Model and Validation using O2 A-Band Spectra

June 30, 2010

Author(s)

Keith A. Gillis, Daniel K. Havey, Joseph T. Hodges

… cm long resonator and having a Q-factor of approximately 30. We present a detailed theoretical analysis of the system …

A New Torsion-Rotation Fitting Program for Molecules with a Six-Fold Barrier: Application to the Toluene Microwave Spectrum

October 29, 2009

Author(s)

Vadim V. Ilyushin, Zbigniew Kisiel, Lech Pszczolkowski, Heinrich Maeder, Jon T. Hougen

… in the toluene microwave spectrum characterized by J  30, Ka  12, and the free rotor quantum number |m|  3. In …

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

… matchBWof 10 24.5 GHz, and a 10-dB isolation BW of 13 30 GHz. A 16-way four-level binary Wilkinson power divider …

A New Evaluation of the Half-life of 241Pu

April 14, 2009

Author(s)

Roger Wellum, Andre Verbruggen, Ruediger Kessel

… care was taken to ensure that all measured values over the 30 year measurement time-span have been included. The value …

Uncertainties in Scaling Factors for ab Initio Vibrational Zero-Point Energies

March 21, 2009

Author(s)

Karl K. Irikura, Russell D. Johnson III, Raghu N. Kacker, Ruediger Kessel

… random, but are systematic. We report scaling factors for 30 combinations of theory and basis set, intended for …

Dissolution Dynamics of Artificially Structured Materials

October 16, 2008

Author(s)

M Shima, L Salamanca-Riba, Thomas P. Moffat

… dissolution was observed if the cobalt layer was less than 30 MEQ while almost complete dissolution occured when the …

Reduced Hardening Time of Calcium Phosphate Cements

October 16, 2008

Author(s)

Milenko Markovic, S. Takagi, Laurence C. Chow

… States. This cement hardens in less than or equal to} 30 min with water and in about 5 min with a 0.25 mol/L …

Structure of Archaeal Alanine Dehydrogenase and Relation to Bacterial and Human Proteins

October 16, 2008

Author(s)

David Travis Gallagher, H G. Monbouquette, I Schroeder, Hugh Robinson, Marcia J. Holden, N Smith

… hormone binding protein belongs to the same family, with 30% sequence identity to AF1665. …

Progress in the Development and Performance of a High Frequency 4 K Stirling-Type Pulse Tube Cryocooler

May 17, 2008

Author(s)

Peter E. Bradley, Ray Radebaugh, Isaac Garaway

… whereas, a separate linear compressor operating at 30 Hz and 1.0 MPa provides acoustic power for the He-3 …

Stability Phase-Fields in the and Pyrochlore Formation in Sections of the Bi 2 O 3 -Al 2 O 3- Nb 2 O 5

May 8, 2008

Author(s)

Terrell A. Vanderah, Jorge T. Guzman, Juan C. Nino

… to substitute for Fe2O3 in the Bi-Fe-Nb-O pyrochlore up to 30 mol%, resulting in a slight decrease in the cubic unit …

Absorption, transmission, and scattering of expanded polystyrene at millimeter-wave and terahertz frequencies

March 17, 2008

Author(s)

Charles Dietlein, Jon E. Bjarnason, Erich N. Grossman, Zoya Popovic

… from periodic clothing materials such as corduroy, around 30 dB below the transmitted beam. To adequately address this …

CALCULATED REGENERATOR PERFORMANCE AT 4 K WITH HELIUM-4 AND HELIUM-3

March 16, 2008

Author(s)

Ray Radebaugh, Yonghua Huang, Agnes O?Gallagher, John Gary

… The frequency range investigated varies from 1 Hz to 30 Hz, with particular emphasis on higher frequencies. …

Detection of Interstellar Cyanoformaldehyde (CNCHO)

December 31, 2007

Author(s)

Francis J. Lovas, Anthony J. Remijan, Jan M. Hollis, Wilmer D. Stork, Phil R. Jewell, D Meier

… the 8(0, 8) 7(1, 7) at 19.4 GHz, the 9(0, 9) 8(1, 8) at 30.3 GHz, and the 10(0, 10) 9(1, 9) at 41.3 GHz, and one …

Modifications to the copper strip corrosion test for the measurement of sulfur-related corrosion

October 1, 2007

Author(s)

Lisa S. Ott, Thomas J. Bruno

… using the usual large, oblong strips designed to measure 30 mL fluid samples, we used small circular Cu coupons as an …

Impedance Measurements of Inertance Tubes at High Frequency and Pressure

July 16, 2007

Author(s)

Michael A. Lewis, Ryan P. Taylor, Peter E. Bradley, Ray Radebaugh, Gershon Grossman, Zhihua Gan

Previous comparisons between measured and calculated inertance tube impedance were made at frequencies below 70 Hz and average pressures below 3 MPa. In this paper, we present results on similar comparisons for frequencies up to 150 Hz and average

Experimental Transient Performance of a Heat Pump Equipped With a Distillation Column

May 1, 2007

Author(s)

J G. Gebbie, M K. Jensen, Piotr A. Domanski

… column. The system was operated with R32 and with a 30/70 % by mass mixture of R32/134a to examine the difference …

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