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921.
922.
Jozef Chomič Ján Skoršepa Juraj Černák Alexander Hudák 《Monatshefte für Chemie / Chemical Monthly》1982,113(6-7):713-714
The preparation, identification and some properties of three new clathrate compounds Cd(mea)[Pd(CN)4] · 2C6H6, Cd(mea)2[Pd(CN)4] · C4H4S and Cd(mea)2[Pd(CN)4] · C4H4NH (mea = HO-CH2-CH2-NH2) are described. 相似文献
923.
Michael J. Blandamer John Burgess Philip P. Duce Robert I. Haines Alexander McAuley 《Transition Metal Chemistry》1982,7(1):10-13
Summary Rate constants are reported for 12-tungstocobaltate(III) [CoW12O40]5– oxidation of iodide in water and in binary aqueous solvent mixtures containing up to 40% methanol, 40% acetonitrile, or 60% dimethyl sulphoxide. From these kinetic results, solubility measurements on potassium 12-tungstocobaltate(III), and published data on Gibbs free energies of transfer of appropriate ions, it has been deduced that the dominant factor in determining the marked decrease in rate observed on going from water into the binary aqueous solvent mixtures is destabilisation of the transition state for the electron-transfer reaction. 相似文献
924.
A recently proposed extension of the MNDO formalism to d orbitals has been parameterized for the halogens CI, Br, and I. Extensive test calculations indicate slight consistent improvements for normalvalent molecules and dramatic improvements for hypervalent molecules, in comparison with established MNDO -type methods without d orbitals. The mean absolute errors in calculated heats of formation are 3.9 kcal/mol for 155 normalvalent compounds and 2.8 kcal/mol for 23 hypervalent compounds. The predicted structures of the hypervalent molecules are qualitatively correct, with a mean absolute error of 2° in 19 bond angles. 相似文献
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Improvements for ground-based remote sensing of atmospheric aerosol properties by additional polarimetric measurements 总被引:1,自引:0,他引:1
Zhengqiang Li Philippe Goloub Oleg Dubovik Luc Blarel Wenxing Zhang Thierry Podvin Alexander Sinyuk Mikhail Sorokin Hongbin Chen Brent Holben Didier Tanr Marius Canini Jean-Pierre Buis 《Journal of Quantitative Spectroscopy & Radiative Transfer》2009,110(17):1954-1961
We discuss the improvements in the aerosol properties characterization resulting from the additional multi-wavelength polarization measurements measured by a new CIMEL polarized sun/sky-photometer, CE318-DP. In order to process direct-sun, sky and polarization measurements in a wide spectral range (340–1640 nm), we developed new calibration methods and strategies, e.g. using the Langley plot method to calibrate both direct-sun irradiance and sky radiance, as well as combining laboratory facilities with a vicarious method to calibrate the polarized sky measurements. For studying the impact of new polarimetric measurements on the retrievals of aerosol properties, we have processed an extensive record of field measurements using an updated Dubovik and King retrieval algorithm [Dubovik O, Sinyuk A, Lapyonok T, Holben BN, Mishchenko MI, et al. Application of spheroid models to account for aerosol particle nonsphericity in remote sensing of desert dust. J Geophys Res 2006;111:D11208.]. A preliminary analysis shows that adding polarization in the inversion can reduce possible errors (notably for about 30% of our field cases) in the fine mode size distribution, real part of refractive index and particle shape parameter retrievals, especially for small particles. 相似文献
929.
Alexander Belyaev 《Pramana》2009,72(1):143-160
Large Hadron Collider (LHC) has a great chance to finally reveal supersymmetry which remains a compelling theory for over
30 years in spite of lack of its discovery. It might be around the corner the present LHC era with sensitive dark matter search
experiments and international linear collider hopefully coming up in the near future.
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