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Physics

Thermodynamics

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Displaying 651 - 675 of 830

Shear Thinning Near the Critical Point of Xenon

April 17, 2008
Author(s)
Robert F. Berg, Michael R. Moldover, M Yao, G A. Zimmerli
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 < γτ < 700, where γτ is the shear rate scaled by the relaxation time τ of

Thermodynamics of Enzyme Catalyzed Reactions: Part 7 - 2007 Update

October 25, 2007
Author(s)
Robert N. Goldberg, Yadu D. Tewari, Talapady N. Bhat
This review serves to update previously published evaluations of equilibrium constants and enthalpy changes for enzyme catalyzed reactions. For each reaction the following information is given: the reference for the data; the reaction studied; the name of

Avoid Common Pitfalls when using Henry's Law

September 3, 2007
Author(s)
Allan H. Harvey, Francis L. Smith
This article provides practical guidance for the use of Henry's law in design calculations, with emphasis on solutes in aqueous systems at conditions characteristic of wastewater cleanup operations. Particular attention is given to the temperature

Reference Viscosities of H 2 , CH 4 , Ar and Xe at Low Densities

August 1, 2007
Author(s)
E May, Robert F. Berg, Michael R. Moldover
We determined the zero-density viscosity eta of hydrogen, methane and argon in the temperature range 200 K to 400 K, with standard uncertainties of 0.084 % for hydrogen and argon and 0.096 % for methane. These uncertainties are dominated by the uncertainty

ILThermo: A Free-Access Web Database for Thermodynamic Properties of Ionic Liquids

July 15, 2007
Author(s)
Qian Dong, Chris D. Muzny, Andrei F. Kazakov, Vladimir Diky, Joe W. Magee, Jason A. Widegren, Robert D. Chirico, Kenneth N. Marsh, Michael D. Frenkel
The development, scope, and functionality of the web-based ionic liquids database, ILThermo, are described. The database is available free to the public, and aims to provide users worldwide with up-to-date information from publications of experimental

The Role of Water in the Thermodynamics of Drug Binding to Cyclodextrin

July 1, 2007
Author(s)
Niya Tordorova, Frederick P. Schwarz
The thermodynamic parameters, DBGo, DBHo, and DBSo, of the drugs flurbiprofen (FLP), nabumetone (NAB), and naproxen (NPX) binding to b-cyclodextrin (bCD) and to g-cyclodextrin (gCD) in 0.10 M sodium phosphate buffer were determined from isothermal

The Polarizability of Helium and Gas Metrology

June 22, 2007
Author(s)
James W. Schmidt, R Gavioso, E May, Michael R. Moldover
Using a quasi-spherical, microwave cavity resonator, we measured the refractive index of helium to deduce its molar polarizability A ε in the limit of zero density. We obtained (A ε,meas - A ε,theory)/A ε = (-1.8plus or minus} 8.4)× 10 -6, where the
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