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111.
Victor E.Ostrovskii 《天然气化学杂志》2004,(3)
Principal side factors as well as technical and procedural peculiarities capable of distorting the results of measurements of adsorbed and desorbed amounts, of falsifying the nature of the processes proceeding in the systems under study, and of promoting artifacts in calorimetric and other studies of gas chemisorption on powders are considered. Modified techniques and procedures allowing the elimination of sources of side phenomena and artifacts and freeing traditional glass static adsorption apparatuses and experimental procedures from undesirable factors and peculiarities are proposed. Some available chemisorption and calorimetric data representing artifacts and also some data that are not artifacts but, due to imperfections of chemisorption techniques, show up as artifacts are presented and discussed. Several applications of the improved techniques and procedures to calorimetric and adsorption studies of the steps of catalytic processes proceeding on the basis of natural gas and of products of its pr 相似文献
112.
泡沫体系的表面张力、粘度,表面粘度以及液晶相的存在对泡沫的稳定性皆有影响。消泡剂可改变上述性质。本文报导聚氧乙烯辛基酚(TritonX-100),十二烷基硫酸钠(SDS),油酸三乙醇胺(TEAOL)和卵磷脂等起泡剂在均相溶液及有液晶存在时产生泡沫的稳定性,观察硅油的消泡作用。 相似文献
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114.
石玉明 《理化检验(化学分册)》1997,33(3):111-112
探讨了50μg以下的硒与氢氧化铁共沉淀的因素和分离铅基合金中硒的条件,从而成功地利用催化极谱法测定铅基合金中硒。分析范围在0.05%-0.0005%,回收率在91.5%-105%间。应用于铅基合金中硒的测定,获得满意的结果。 相似文献
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116.
A study on organized assemblies in the sodium alkylcarboxylate/fatty alcohol/water systems 总被引:1,自引:0,他引:1
The phase behavior and evolution of self-organized assembling structures in the sodium alkylcarboxylate/fatty alcohol systems were investigated by TEM.With increasing concentration of fatty alcohol,the micelles transform into lamellar La phase,sponge L3 phase,multilamellar vesicle,and transfonn back to lamellar La phase.At higher alcohol concentration,a stable two aqueous phase coexisting region has been observed in this kind of systems after aged two months.Unilamellar vesicles were found both in two separated phases but the vesicle density of the upper phase is much higher than that of the bottom phase. 相似文献
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118.
ZHU Jun ZHU Bo QU JianYing GOU QingQuan & CHEN Fang College of Physical Science Technology Sichuan University Chengdu China Southwest Jiaotong University-Emei Campus Emei 《中国科学G辑(英文版)》2009,52(7):1039-1042
The elastic and thermodynamic properties of Zirconium carbide (ZrC) are investigated by ab initio plane-wave pseudopotential density function theory method. The obtained lattice constant, elastic constant and bulk modulus
B are consistent with the experimental and theoretical data. Through the quasi-harmonic Debye model, the dependences of the
normalized volume V/V
0 and the bulk modulus B on pressure P, as well as the specific heat C
V
on the temperature T are obtained successfully. The relationships of the thermal expansion α with temperature and pressure are also investigated, which indicate the temperature hardly has any effect on the thermal
expansion α at high pressure.
Supported by the National Natural Science Foundation of China (Grant No. 10776022) 相似文献
119.
Chairman of the International Organizing Committee of the Conference Slobodan Anić Chairman of the Program Committee Ankica Antić-Iovanović Vice-Chairman of the Local Organizing Committee Željko Čhupić Deputy Editor-in-Chief of the Russian Journal of Physical Chemistry N.F. Stepanov 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2007,81(9):1359-1359
120.
PAN Min HUANG Zheng MA HuanFeng QIANG WeiRong WEI LianFu WANG Long & ZHAO Yong Key Laboratory of Magnetic Levitation Technologies Maglev Trains Superconductivity R&D Center Southwest Jiaotong University Chengdu China School of Physical Science Technology Superconductivity Research Group School of Materials Science Engineering University of New South Wale Sydney ... 《中国科学G辑(英文版)》2009,(7)
The lattice parameters, band structure, density of state and elastic constant of RE-doped CeO2 (RE=Sm, Gd, Dy), the buffer material for coated HTS conductors, are calculated using the plane-wave method with pseudopotentials based on the density functional theory (DFT) of first-principle. The rule and mechanism of the effect of rare earth impurity on the critical thickness of the CeO2 buffer layer are investigated. It is found that, in the range of the calculation, the changes of the lattice volume V and ela... 相似文献