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Displaying 776 - 800 of 1005

Towards portable vacuum standards

August 1, 2009
Author(s)
Jay H. Hendricks, Douglas A. Olson
Since the middle of the 17th century, when Italian physicist Evangelista Torricelli discovered that a glass tube filled with mercury could be used to measure atmospheric pressure, liquid-column manometers have been used as a primary standard to measure

A Sensitive Very Large Array Search for Small-Scale Glycine Emission Toward OMC-1

May 1, 2003
Author(s)
J M. Hollis, J A. Pedelty, Lewis E. Snyder, P R. Jewell, Francis J. Lovas, Patrick Palmer, S Y. Liu
… four rotational transitions: 6(15)-5(14), 6(24)-5(23), 7(17)-6(16), and 7(07)-6(06). Our VLA observations sample the … In the course of this work, we detected and imaged the 4(14)-3(13) A and E transitions of methyl formate (HCOOCH3) …

Acoustic Measurements in Gases, Chapter 10

September 15, 2001
Author(s)
Michael R. Moldover, Keith A. Gillis, John J. Hurly, J B. Mehl, J Wilhelm
Cylindrical acoustic resonators developed at the National Institute of Standards and Technology (NIST) are routinely used to measure the speed of sound in gases with uncertainties of 0.01% or less. The pressure dependence of the data is fitted with model

Formation of Macropores in Calcium Phosphate Cements Through the Use of Mannitol Crystals

January 1, 2001
Author(s)
Milenko Markovic, Shozo Takagi, Laurence C. Chow
… % mannitol were mixed with cement liquid (1 mol/L Na 2 HPO 4 solution) at powder-to-liquid ratio (P/L) of 4 g/mL. The hardening times for the two mannitol-containing … g/cm 3 (n=8). Macroporosities were (a) 0% and (b) (10.9 1.17) % (n = 8), and microporosities were (a) (34.3 1.0) % and …

Substrate Specificity of Deinococcus Radiodurans Fpg Protein

June 1, 1999
Author(s)
K. J. Tuerk, C Bauche, J Laval, M. Dizdaroglu
… acid. Excision of purine lesions 2,6-diamino-4-hydroxy-5-formamidopyrimidine (FapyGua), 4,6-diamino-5-formamidopyrimidine (FapyAde) and 8-hydroxyguanine (8-OH-Gua) was observed among 17 lesions detected in damaged DNA substrates. The extent of …

Modeling Community Resilience: Update on the Center for Risk-Based Community Resilience Planning and the Computational Environment IN-CORE

November 15, 2018
Author(s)
John W. van de Lindt, Bruce Ellingwood, Therese P. McAllister, Paolo Gardoni, Daniel Cox, Walter G. Peacock, Harvey Cutler, Maria Dillard, Jong Lee, Lori Peek, Judith Mitrani-Reiser
Community resilience is often defined as the ability of a community to prepare for, absorb, and recover rapidly from a hazard event. In 2015, the U.S. National Institute of Standards and Technology (NIST) funded the Center for Risk-Based Community
Displaying 776 - 800 of 1005
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