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Topic Area: Gas Metrology
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Displaying records 11 to 20 of 31 records.
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11. Frequency-stabilized cavity ring-down spectroscopy measurements of carbon dioxide isotope ratios
Topic: Gas Metrology
Published: 5/15/2011
Authors: Joseph Terence Hodges, David A Long, Mitchio Okumura, Charles E Miller
Abstract: Carbon dioxide (CO2) isotopic ratios were measured at 1.6 μm through the use of frequency-stabilized cavity ring-down spectroscopy (FS-CRDS). We report the highest spectrum signal-to-noise ratios to date for CO2 transitions, with values as high ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907103

12. Gas Standards Containing Hydrocarbon and Volatile Organic Compounds for Automobile Exhaust and Ambient Air Monitoring
Topic: Gas Metrology
Published: 8/1/2003
Author: George C Rhoderick
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903394

13. High Definition Flow
Topic: Gas Metrology
Published: 8/1/2009
Authors: John D Wright, Michael R Moldover
Abstract: From pharmaceutical production to the natural gas market, exact flow measurements are critical. Here's how NIST helps keep us all on the same page.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832391

14. Infrared Absorptivity Temperature Dependence of Gas Phase Methanol and Sulfur Dioxide
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6773
Topic: Gas Metrology
Published: 8/1/2001
Authors: Pamela M Chu, George C Rhoderick, P. A. Johnson
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904317

15. Intensity Artifacts in Gas Phase FTIR Spectroscopy: Focus on the Aperture
Topic: Gas Metrology
Published: 2/1/2001
Authors: S W Sharpe, R L Sams, T J Johnson, Pamela M Chu
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904879

16. Long-Term Stability of Hydrocarbons in NIST Gas Standard Reference Material (SRM) 1800
Topic: Gas Metrology
Published: 8/2/2005
Author: George C Rhoderick
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903529

17. Long-term stability of metal-envelope enclosed ionization gauges
Topic: Gas Metrology
Published: 12/1/2012
Authors: James A Fedchak, Dana R Defibaugh
Abstract: Ionization vacuum gauges are used as secondary standards by calibration laboratories and as transfer standards in intercomparisons among metrology laboratories. A quantitative measurement of gauge stability with respect to the gauge calibration fact ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911249

18. Natural Gas Flow Calibration Service
Series: Special Publication (NIST SP)
Topic: Gas Metrology
Published: 8/1/2008
Author: Aaron N Johnson
Abstract: This document describes NIST's high pressure natural gas flow calibration service (NGFCS). Flow calibrations are conducted offsite at the Colorado Experimental Engineering Station Incorporated (CEESI) in Garner, Iowa. A parallel array of nine tur ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832323

19. Noble gas viscosities at 25 degrees C
Topic: Gas Metrology
Published: 8/10/2012
Authors: Robert F Berg, William Cody Burton
Abstract: Near 25 C, ab initio calculations of the zero-density viscosity of helium gas eta_He have an uncertainty of approximately 0.001 %, which is 1/40th of the uncertainty of the best measurements. The uncertainties of the published calculations for neon [ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911234

20. Optimizing Acoustic Measurements of the Boltzmann Constant
Topic: Gas Metrology
Published: 11/22/2009
Author: Michael R Moldover
Abstract: We review the progress in acoustic metrology of gases that has occurred since the 1988 measurement of the universal gas constant {I}R{/I} using a spherical acoustic resonator. The advances in understanding resonators and in calculating the thermophys ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902117



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