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J. Cent. South Univ. Technol. (2010) 17: 1310-1319 DOI: 10.1007/s11771-010-0636-8 Multi-label dimensionality reduction based on semi-supervised discriminant analysis LI Hong(李宏), LI Ping(李平), GUO... algorithm called multi-label dimensionality reduction via semi-supervised discriminant analysis (MSDA) was proposed. It was expected to derive an objective discriminant function as smooth as possible......
的影响如图6所示. 图6 反应温度对砷,碲,铋还原沉淀率的影响 Fig. 6 Effect of on reduction precipitation rate of As, Bi and Te 由图6可知,碲还原沉淀率随着反应温度的增加而增加,当温度为50℃增加到70℃时碲还原沉淀率从86.66%增加到96.56%,继续增加反应温度碲还原沉淀率没有明显增加.因此,适宜的...XRD和SEM实验,实验结果如图8和9所示. 图7 反应时间对砷,碲,铋还原沉淀率的影响 Fig. 7 Effect of reaction time on reduction precipitation rate of As, Te and Bi 图8 还原沉淀渣的XRD谱 Fig. 8 XRD pattern of reduction......
J. Cent. South Univ. (2021) 28: 1279-1290 DOI: https://doi.org/10.1007/s11771-021-4696-8 ZIF-67 derived CoSx/NC catalysts for selective reduction of nitro compounds ZHANG Guang-ji(张广吉)1, TANG Fei... possesses higher degree of S defects and larger specific surface areas, can achieve high conversion, selectivity and stability for catalytic reduction of nitro compounds into amines under mild reaction......
三价铬在ChCl/CrCl3·6H2O体系中的电沉积机理崔焱1,华一新1(1.云南省昆明市昆明理工大学冶金与能源工程学院)摘 要:采用循环伏安法,恒电流阶跃电位-时间暂态曲线研究Cr(Ⅲ)在ChCl/CrCl3·6H2O体系中的电化学行为.计时电位法计算得到333K下的扩散系数4.504×10-10 cm2/s.循环伏安法得到电化学反应的表观活化能约为40kJ/mol.研究表明,在ChCl/CrCl3·36H2O体系中Cr(Ⅲ)还原为金属Cr是单步骤受扩散控制的完全不可逆过程.Cr(Ⅲ)在还原过程中无前置化学反......
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Reinforcement strength reduction in FEM for mechanically stabilized earth structuresXUE Jian-feng(薛剑峰)1, 2, CHEN Jian-feng(陈建峰)1(1. Key Laboratory of Geotechnical and Underground Engineering... stabilized earth (MSE) structures can be analyzed either using limit equilibrium method (LEM) or strength reduction method (SRM) in finite element/difference method. In LEM, the strengths......
Preparation of copper nanoparticles by chemical reduction method using potassium borohydride ZHANG Qiu-li(张秋利)1, YANG Zhi-mao(杨志懋)2, DING Bing-jun(丁秉钧)2, LAN Xin-zhe(兰新哲)1, GUO Ying-juan(郭莹娟)1... by chemical reduction method using potassium borohydride as reducing agent. The effects of reactant ratio, concentration of CuSO4, reaction temperature, and dispersant on the size of product and conversion......
J. Cent. South Univ. Technol. (2008) 15: 20-24 DOI: 10.1007/s11771-008-0005-z Resistance optimization of flexes in aluminum reduction cells LI Jie(李 劼), LIU Jie(刘 杰), LIU Wei(刘 伟... connecting with the cathode bus bar in aluminum reduction cells were generalized as three modes. In each mode the universal method to select proper resistivity of the flexes was induced respectively to insure......
Preparation of nano-platinum and its catalytic activity toward methanol oxidation and oxygen reduction HUANG You-ju(黄幼菊), DAI Hong-hai(戴宏海), LI Wei(李 伟), ZHANG Qing-long(张庆龙), ZHAO Ling-zhi(赵灵智... prepared on a glass carbon electrode by cyclic voltammetry. The surface morphology and active area of the catalysts, and their catalytic activity toward methanol oxidation and oxygen reduction were......
J. Cent. South Univ. (2012) 19: 2291-2296 DOI: 10.1007/s11771-012-1274-0 Action rules of H2 and CO in gas-based direct reduction of iron ore pellets YI Ling-yun(易凌云)1, HUANG Zhu-cheng(黄柱成)1, PENG Hu... University Press and Springer-Verlag Berlin Heidelberg 2012 Abstract: The gas-based direct reduction of iron ore pellets was carried out by simulating the typical gas composition in coal gasification......
