排序方式: 共有14条查询结果,搜索用时 187 毫秒
1.
Brick DH Widgoff M Beilliere P Lutz P Narjoux JL Gelfand N Alyea ED Bloomer M Bober J Busza W Cole B Frank TA Fuess TA Grodzins L Hafen ES Haridas P Huang D Huang HZ Hulsizer R Kistiakowsky V Ledoux RJ Milstene C Noguchi S Oh SH Pless IA Steadman S Stoughton TB Suchorebrow V Tether S Trepagnier PC Wadsworth BF Wu Y Yamamoto RK Cohn HO Calligarich E Castoldi C Dolfini R Introzzi G Ratti S Badiak M DiMarco R Jacques PF Kalelkar M Plano RJ Stamer PE Brucker EB Koller EL Alexander G Grunhaus J 《Physical review D: Particles and fields》1990,41(3):765-773
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The extraction of Al(III) and Zn(II) from an aqueous solution with two water-in-oil microemulsions, one containing di(2-ethylhexyl)phosphoric acid (DEHPA), was investigated to aid the understanding of the role of the extractant and the metal specific characteristics in the mechanism of microemulsion extraction. The extraction of Al with the DEHPA microemulsion increased by a factor of about 10 with respect to that in the conventional DEHPA system, whereas the extraction of Zn was lower than that in the single DEHPA system. Extraction with the DEHPA-free microemulsion was very low, showing that metal ion solubilization was not important in the mechanism of microemulsion extraction. It is proposed that the effect of the mixed microemulsion on the metal distribution coefficient is the result of the balance between a decrease in the complexation reaction yield due to the interaction between butanol and DEHPA, and the adsorption of the metal complex at the macro- and microinterfaces. The former leads to a decrease in Zn(II) extraction and the latter to Al(III) extraction synergism. Copyright 2000 Academic Press. 相似文献
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D. H. Brick A. M. Shapiro M. Widgoff E. D. Alyea Jr. T. Fuess E. S. Hafen P. Haridas R. I. Hulsizer C. Milstene I. A. Pless R. K. Yamamoto F. Grard R. Dolfini S. Ratti R. Di Marco M. Kalelkar R. J. Plano P. E. Stamer S. Dado J. Goldberg R. Heifetz A. Levy W. M. Bugg T. Handler E. L. Hart Y. Eisenberg U. Karshon 《Zeitschrift fur Physik C Particles and Fields》1986,32(1):59-63
The total hadron multiplicity and the multiplicity in the three-jet events ine + e ?-annihilation are considered. The formula for the total multiplicity (with account for the heavy quark contribution) agrees well with experiment. The value of the multiplicity for three-jet events is predicted. 相似文献
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在航空航天领域,为了加速系统设计及测试进度,通常需要进行半实物实时仿真,即控制器用实物,受控对象采用数学模型。本文开发出了基于Matlab/Simulink的两相传热模块,并用其搭建了某机械泵驱动两相回路的实时动态模型。通过与实验的对比,验证了模型的可靠性,表明该模型满足实时要求,可以在下一步用于半实物仿真。 相似文献
5.
Brick DH Widgoff M Beilliere P Lutz P Narjoux JL Gelfand N Alyea ED Bloomer M Bober J Busza W Cole B Frank TA Fuess TA Grodzins L Hafen ES Haridas P Huang D Huang HZ Hulsizer R Kistiakowsky V Ledoux RJ Milstene C Noguchi S Oh SH Pless IA Steadman S Stoughton TB Suchorebrow V Tether S Trepagnier PC Wadsworth BF Wu Y Yamamoto RK Cohn HO Calligarich E Corti G Dolfini R Gianini G Introzzi G Ratti S Badiak M DiMarco R Jacques PF Kalelkar M Plano RJ Stamer PE Brucker EB Koller EL Alexander G 《Physical review D: Particles and fields》1992,45(3):734-742
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Maximilian Hafen 《Mathematische Annalen》1910,69(4):517-537
Ohne Zusammenfassung 相似文献
7.
Brick D. Rudnicka H. Shapiro A. M. Widgoff M. Alyea E. D. Hafen E. S. Hulsizer R. I. Kistiakowsky V. Levy A. Lutz P. Oh S. H. Pless I. A. Silverman J. P. Stoughton T. B. Trepagnier P. C. Yamamoto R. K. Cohn H. O. Kalelkar M. Plano R. J. Stamer P. E. Watts T. L. Brucker E. B. Koller E. L. Bugg W. M. Ludlam T. Taft H. D. 《Zeitschrift fur Physik C Particles and Fields》1982,11(4):335-341
Zeitschrift für Physik C Particles and Fields - Distributions with respect toz andz R for the fastest and second fastest particles produced in both beam and target hemispheres from 147 GeV/c... 相似文献
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G. Berlad J. Grunhaus E.S. Hafen M.F. Hodous R.I. Hulsizer U. Karshon V. Kistialowsky A. Levy I.A. Pless P.C. Trepagnier J. Wolfson R.K. Yamamoto 《Nuclear Physics B》1976,103(1):12-38
Four low-mass “diffractive like” reactions π±p → π±(pπ0) and π±p → π±(nπ+) have been studied at 3.9 GeV/c incident pion momentum. These channels have been studied in the framework of a two-component model and we have proposed a definition of the diffraction dissociation amplitude. The following three features of the data are discussed: (1) an apparent violation of the predictions of isospin invariance for the cross section ratios, (2) the marked anisotropy of the s-channel helicity distributions and (3) the absence of the cross-over effect in the differential cross sections. The predictions of a two-component model previously used to explain the low mass enhancement [1] and s- and t-channel helicity non-conservation [2] are seen to be in agreement with these observations. Predictions are also made for higher energy incident pions and incident K, p, and projectiles. These predictions are compared with available data including recent results at Fermilab and ISR energies. 相似文献
10.
Ma Z Naylor BC Loertscher BM Hafen DD Li JM Castle SL 《The Journal of organic chemistry》2012,77(2):1208-1214
Regioselective base-free intermolecular aminohydroxylations of functionalized trisubstituted and 1,1-disubstituted alkenes employing benzoyloxycarbamate 3a and catalytic OsO(4) are described. In all cases, the more substituted alcohol isomer is favored. Sluggish reactions could be promoted by gentle heating, the use of amine ligands, or increased catalyst loadings. A competitive rearrangement was observed with a secondary allylic alcohol substrate. The adducts serve as useful precursors to dehydroamino acids. 相似文献