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, which is obviously improved compared with the 1248.47×10-6 in metallurgical Si. Key words: primary silicon; Al-Si alloy; electromagnetic stirring; directional solidification; impurity 1 Introduction... and nonmetallic instead of one single impurity; and 3) it should be environmental friendly which ensure all the final products be utilized rationally as much as possible. For the purpose of energy......
transition; oxygen impurity ...; 1 Introduction In Zr-based bulk metallic glasses(BMGs), oxygen is an unavoidable impurity element, which can come from raw......
Effect of Rare Earth Ions on Kinetic Properties of Escherichia coli Leucyl-tRNA Synthetase TU Hua-min1,WANG En-duo2,LI Yong2,YANG Yan-sheng3 (1.Department of Chemistry, Hebei Normal University... that metal ions are a substrate of the aminoacylation reaction. Key words:rare earths; leucyl-tRNA synthetase; aminoacylation; [全文内容正在添加中] ......
="ChDivSummary"><正> An overview of extraction of some trace metal ions using molten solvent (low melting substance) during last two decades is presented. The development of this technique since its inception is briefly traced. The comparison of extraction efficiency, thermodynamics and kinetics mainly involving extraction of rare earth ions between molten solvent extraction at high temperature......
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Effect of copper impurity on the optical loss and Nd3+ nonradiative energy loss of Nd-doped phosphate laser glass徐永春,李顺光,胡丽丽,陈伟Shanghai Institute of Optics & Fine Mechanics, Chinese Academy... by Cu2+ and Nd3+ interaction were 0.0024 and 7.9, respectively. Cu impurity affected both optical loss at 1053 nm and fluorescent emission of Nd3+ 4F3/2 state seriously in N31 laser glass.关键词:......
Effect of copper impurity on the optical loss and Nd3+ nonradiative energy loss of Nd-doped phosphate laser glass徐永春,李顺光,胡丽丽,陈伟Shanghai Institute of Optics & Fine Mechanics, Chinese Academy... by Cu2+ and Nd3+ interaction were 0.0024 and 7.9, respectively. Cu impurity affected both optical loss at 1053 nm and fluorescent emission of Nd3+ 4F3/2 state seriously in N31 laser glass.关键词:......
Determination of Shallow Impurity Concentration in Detector-grade Silicon by FT-IR Spectroscopy at 4.2KZhang Jichang Pohl lnstitute for Solid State Physics,Physics Dept.,Tongji University,Shanghai,China.Wu Jiangen Qu Fengyuan Laboratory for Semiconductor Physics,Physics Dept.,Fudan University,Shanghai,China.Ye Hongjuan Xiao Jincai Yu Zhiyi Lu Wei Laboratory for Infrared Physics,Shanghai Institute......
Role of oxygen and ammonium ions in silver leaching with thiosulfate–ammonia–cupric ionsValentin Ibarra-Galvan1,Alejandro López-Valdivieso2,Xiong Tong3,Yi-Qi Cui31. Faculty of Chemistry, Colima... id="ChDivSummary" name="ChDivSummary">The dissolution of silver with thiosulfate and copper ions was studied in a batch-stirred reactor at 25 °C in the absence and presence of various ammonium ions......
of adsorption of Ca(Ⅱ) ions onto KCTS and HKCTS DING Ping(丁萍)1, HUANG Ke-long(黄可龙)2, YANG Hua(杨桦)1, LI Gui-yin(李桂银)2, LIU Yan-fei(刘艳飞)2 1. School of Public Health, Central South University, Changsha...(Ⅱ) ions from aqueous solution by chitosan α-ketoglutaric acid (KCTS) and hydroxamated chitosan α-ketoglutaric acid (HKCTS) was studied in a batch adsorption system. The Langmuir and Freundlich adsorption......
