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Trans. Nonferrous Met. Soc. China 24(2014) 491-498 Density functional theory study on natural hydrophobicity of sulfide surfaces Cui-hua ZHAO1,2,3, Jian-hua CHEN1,4, Bo-zeng WU2, Xian-hao LONG1 1... on sulfide surfaces and natural floatability of sulfide minerals were studied using density functional theory (DFT) method. All computational models were built in a vacuum environment to eliminate......
of gold dissolution selectively in alkaline thiourea solutions based on complex theory ZHENG Su, WANG Yun-yan, CHAI Li-yuan (School of Metallurgical Science and Engineering,Central South University... selectively in alkaline thiourea solution was anatomied based on chemical bond theory and complex theory. The results indicate that Au, Ag, Cu, Ni and Fe exist in alkaline thiourea solution in the form......
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> 关键词: 证据理论;不确定性;信度;力学参数; 中图分类号: TD313 收稿日期:2000-02-24 基金:湖北省重点科技项目! ( 981P2 0 1); Belief estimation of rockmass mechanical parameters based on evidence theory Abstract: Based on a mathematical theory of evidence and considering the uncertainty of rockmass mechanical parameters, a new method for belief estimation of rockmass mechanical......
calculation technique with density functional theory (DFT) was used. The model geometry of Al3-B cluster and the relevant part of reactivity were determined. The possible paths of cyslization... is 109 kJ/mol, which is decreased by about 70 kJ/mol. Key words: Al3-B cluster; ·OH radical; cyclization reaction; density functional theory 铝酸钠溶液的分解是氧化铝生产的重要环节,由于溶液分解速度缓慢,分解率较低,铝酸钠溶液的分解成为氧化铝生产的瓶颈[1-2......
of fuzzy theory in software project risk assessment TANG Aiguo1, 2, 3, HU Chunhua1, 2, 3 (1. Key Laboratory of Hunan Province for Mobile Business Intelligence, Hunan University of Commerce, Changsha 410205... theory in software project risk assessment was proposed. Using the fuzzy language to assess the consequences and the loss of the risk, the model can measure the combination of impact of a certain risk......
obtained based on fractal theory. The results show that the swelling force becomes stable with time increasing and the attenuation decreases along the bentonite buffer from the boundary contacted... waste; swelling attenuation processes; fractal theory 压实膨润土遇水可发生膨胀,填充围岩裂隙,形成防渗层,从而避免核废料向周围环境释放,因此被用于核废料处置库的缓冲层.但地下核废料处置库的环境复杂,膨润土的膨胀性会在多种因素的耦合作用下发生变化[1-2].研究膨润土的膨胀性在多种不同因素影响下的变化对评估核废料处置库的安全性具有重要意义.秦冰等......
analysis results based on the Mie scattering theory quantitatively account for the observed optical absorption properties dependence on the composition of Au-Ag composite nanoparticles. Key words: Au-Ag composite nanoparticles; optical absorption spectra; Mie scattering theory 金属纳米颗粒由于具有较强的表面效应和量子尺寸效应而具有不同于相应其块体材料的光学, 电磁学及化学性能, 使其在材料科学, 信息科学, 催化及生命科学等领域显示出潜在的应用前景[1-6]. 近年来, 有关贵金属纳......
and Bruggeman effective medium theory. The results show that the eddy current losses caused by capacitive effect between the particles increase with the increase of the Co sputtering power...; permeability; LLG equation; effective medium theory 信息技术的飞速发展和电子元器件的微型化趋势对高频磁性材料性能要求越来越高[1-2].另一方面,电讯技术的发展也引发电磁干扰和电磁污染日趋严重,对能吸收衰减电磁波能量的吸波材料提出了迫切需求.FeCo类磁性纳米颗粒膜在几GHz频段具有较高磁导率,并可以在一定频段具有较高磁损耗,可以应用于高频微磁器件或抗电磁......
) observation shows the evidence for the dynamic theory, which ascribes the DYP to the generation of mobile dislocation at the grain boundary. Meanwhile, the optical microscope (OM) observation shows that both... stress; discontinuous yielding; dynamic theory 1 Introduction Titanium alloys have been widely used in the aeronautical industries due to their low density, high strength, high toughness and good high......
