共搜索到14248条信息，每页显示10条信息，共1425页。用时：0小时0分0秒110毫秒
Column leaching of lanthanides from Abu Tartur phosphate ore with kinetic studyA.T. Kandil1,A.M. Kamel11. Chemistry Department, Faculty of Science, Helwan University摘 要:The dynamic leaching of lanthanides from a west desert phosphate ore, Egypt (Abu Tartur......
Influence of vanadium and chromium additions on the wear resistance of a gray cast ironA.Hassani,A.Habibollahzadeh,S.Sadeghinejad MaterialsScience and Engineering Faculty, Semnan University摘 要:A low-alloy gray cast iron containing hard carbide-forming elem......
Effect of Electroplating Parameters on Microstructure of Nanocrystalline Nickel CoatingsA.M. Rashidi1,2,A. Amadeh21. Faculty of Engineering, Razi University2. School of Metallurgy & Materials Engineering, University College of Engineering, University of Tehran摘 要: Column leaching of lanthanides from Abu Tartur phosphate ore with kinetic studyA.T. Kandil1,A.M. Kamel11. Chemistry Department, Faculty of Science, Helwan University摘 要:The dynamic leaching of lanthanides from a west desert phosphate ore, Egypt (Abu Tartur......Column leaching of lanthanides from Abu Tartur phosphate ore with kinetic study
来源： 《JOURNAL OF RARE EARTHS2010年第4期》——A.T. Kandil A.M. Kamel
EXPERIENCE WITH THERMOMECHANICAL FATIGUE UNDER SERVICE-TYPE LOADING C.Berger1,A.Schmidt1,A.Samir1,A.Scholz1 (1.Institute of Materials Technology, Darmstadt University of Technology, Grafenstrasse 2, D-64283 Darmstadt, Germany) Abstract:The thermomechanical fatigue behaviour of different high temp......
In-situ fabrication of Al(Zn)-Al2O3 graded composite using the aluminothermic reaction during hot pressingS.M.A.Haghi,S.A.Sajjadi,A.BabakhaniDepartment of Materials Science and Engineering, Engineering faculty, Ferdowsi University of Mashhad摘 要:In this stu......
Luminescence enhancement of rare earth ions by metal nanostructuresG.A.DenisenkoA.V.Shubnikov Institute of Crystallography, Russian Academy of SciencesD.V.Skobeltsyn Institute of Nuclear Physics of Moscow State University摘 要:Well-ordered metal structures, ......
认证创造企业价值John A.Venator,李俊伟摘 要:<正> 计算机专业技术认证--作为评定技术水平的一 种墓准--现在已经变得盛况空前了.目前在全世界 范围内,已经有近一百万人获得了认证,提供认证的 公司有Cisco,CompTIA,Microsoft,Novell以及Oracle 等.目前还没有任何迹象显示证书增长减缓的趋势. 由于缺少熟练的IT专家,再加上种类不断增多的平 台环境,商家迅速认识到聘用获得技术认证的人员的 好处.一项最近由IDC所作的调查报告显示,由于聘 用了获得相关证......
美国熔炼与精炼公司锑的电积法A.E Albrethsen,肖永福摘 要:美国熔炼与精炼公司的中心研究室已经研究出一种回收锑的新方法.该工艺流程包括如下:(1)将蒸干后的返回电解液,加上补充的钠盐和还原剂与富黝铜精矿共熔生成"碱冰铜";(2)用水浸出水溶性的硫代亚锑酸钠;(3)在浸出液中添加氢氧化钠;(4)制成的电解液在普通的电解槽中电积.阳极电流密度大于100安培/英尺~2,阴极电流密度大约为20安培/英尺~2.关键词:......
大放异彩的石榴石Sallie A.Thomas,伍文君摘 要:<正> 纵观维多利亚时代及现代石榴石宝石,我们可以看到这一多用途的宝石魅力无穷. 数百年来,石榴石一直受到不同文化背景的社会阶层的宝石爱好者们的青睐.在维多利亚时代的英国(1837-1901),贵榴石及非常普遍的带黑色的红榴石的饰用已达到高潮,成为中,上层阶级珠宝首饰极为重要的组成部分. 随着时代的变迁,款式的更递,到了20世纪上半叶,以石榴石制作珠宝饰物的风尚时兴时衰,不再似维多利亚时代那样普遍时兴了.不过,到了本世纪后半叶,尤其是......
