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You searched on: Topic Area: Gas Metrology Sorted by: title

Displaying records 21 to 27.
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21. Retention Behavior of Alkylated Phenanthrenes on a Smectic Liquid Crystalline Phase: Application to Organic Geochemistry
Topic: Gas Metrology
Published: 12/25/1992
Authors: H. Budzinski, M. Radke, P. Garrigues, Stephen A Wise, J. Bellocq, H. Willsch
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902482

22. Second-order boundary corrections to the radial acoustic eigenvalues for a spherical cavity
Topic: Gas Metrology
Published: 8/17/2012
Author: Keith A Gillis
Abstract: We calculated the eigenvalues of the radially-symmetric acoustic modes of a gas-filled, spherical cavity to order ({delta}^dT^/{I}a{/I})^u2^, where {delta}^dT^ is the thickness of the thermal boundary layer and {I}a{/I} is the radius of the cavity. O ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911620

23. Shear Thinning Near the Critical Point of Xenon
Topic: Gas Metrology
Published: 4/17/2008
Authors: Robert F Berg, Michael R Moldover, M Yao, G A Zimmerli
Abstract: We measured shear thinning, a viscosity decrease ordinarily associated with complex liquids, near the critical point of xenon. The data span the range of reduced shear rates: 0.001 < {gamma}{tau} < 700, where {gamma}{tau} is the shear rate scal ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830987

24. Standard Photoacoustic Spectrometer: Model and Validation using O2 A-Band Spectra
Topic: Gas Metrology
Published: 6/30/2010
Authors: Keith A Gillis, Daniel K. Havey, Joseph Terence Hodges
Abstract: We model and measure the absolute response of an intensity-modulated photoacoustic spectrometer comprising a 10 cm long resonator and having a {I}Q{/I}-factor of approximately 30. We present a detailed theoretical analysis of the system and predict ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904841

25. The Calculation of Natural Gas Viscosity
Topic: Gas Metrology
Published: 8/14/2009
Authors: Aaron N Johnson, William Johansen
Abstract: The calculation of natural gas viscosity has been implemented many different ways including the use of constants. Different methods of calculating natural gas viscosity may produce values with differences as large as 50%. Increasing natural gas price ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903462

26. The Electric And Magnetic Susceptibilities Of Gaseos Oxygen: Comparisons Of New Measurements and Modern Theory
Topic: Gas Metrology
Published: 9/25/2008
Authors: Michael R Moldover, E May, James W Schmidt
Abstract: We used a cross capacitor to measure the relative dielectric permittivity {epsilon}^dr^ of O^d2^ at 273 K, 293 K, and 323 K and at pressures up to 6.5 MPa. Simultaneously we measured oxygen's complex refractive index {I}n{/I} using a quasi-spheri ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832266

27. The Polarizability of Helium and Gas Metrology
Topic: Gas Metrology
Published: 6/22/2007
Authors: James W Schmidt, R Gavioso, E May, Michael R Moldover
Abstract: Using a quasi-spherical, microwave cavity resonator, we measured the refractive index of helium to deduce its molar polarizability {I}A{/I}^d{epsilon}^ in the limit of zero density. We obtained ({I}A{/I}^d{epsilon},meas^ - {I}A{/I}^d{epsilon},theory^ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830993



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