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, China; 2. Center for Biological Imaging, Core Facilities for Protein Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101; 3. College of Materials Science and Engineering... in the matrix using scanning transmission electron microscopy-electron energy loss spectroscopy (STEM-EELS). Based on these findings, it has been obtained that the accurate chemical compositions......
dielectric loss and magnetic loss but the latter is more remarkable. Key words: sol-gel method; rare-earth doping; W-type barium ferrite; microwave absorbing materials; electromagnetic loss  ... reflectance and frequency and the relationship between loss tangent and frequency were calculated from the measured data. The microwave absorbing properties and the electromagnetic loss mechanism of samples......
ARTICLE J. Cent. South Univ. (2019) 26: 2272-2280 DOI: https://doi.org/10.1007/s11771-019-4172-x Soft measurement model on torque of alternating current electrical dynamometer including copper loss and iron loss ZHONG Ding-qing(钟定清)1, 2, WANG Ai-lun(王艾伦)1, HE Qian(何谦)1 1. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China; 2. School of Mechanical......
Preparation and Properties of a Novel Water Soluble Core MaterialWeiguo Jiang,Jiasheng Dong,Langhong Lou,Ming Liu and Zhuangqi Hu Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China摘 要:A novel water-soluble core material composed of polyethylene glycol,sodium chloride,mica powder and plasticizer was prepared.The compressive......
Mechanical Response of All-composite Pyramidal Lattice Truss Core Sandwich StructuresMing Li1,2),Linzhi Wu2),Li Ma2),Bing Wang2) and Zhengxi Guan1) 1) No.201 Faculty,Xi an Research Institute of High...-composite pyramidal lattice truss core sandwich structure was investigated both theoretically and experimentally.Sandwich structures were fabricated with a hot compression molding method using carbon fiber......
J. Cent. South Univ. (2021) 28: 1357-1376 DOI: https://doi.org/10.1007/s11771-020-4537-1 Precision loss of ball screw mechanism under sliding-rolling mixed motion behavior QI Bao-bao(齐宝宝)1, 2... mixed motion behavior degrades the ball screw’s precision at different levels. Based on the sliding-rolling mixed motion between ball and screw/nut raceway, the ball screw’s precision loss considering......
崩落法松散覆盖岩层自然分级对矿石损失贫化的影响 张国建1,徐国权1 (1.辽宁科技大学) 摘要:松散覆盖岩层的自然分级现象对使用崩落法开采的矿山开采效果有较明显的影响.为填补这方面研究的空白,开展了实验室模型试验研究.试验研究结果证实了自然分级现象是松散覆盖岩层客观存在的性质之一.矿岩粒度分布不同,对损失贫化的影响也不同.这项研究为降低损失贫化提供了新的途径. 关键词:覆盖岩层; 自然分级; 损失贫化; 崩落法; [全文内容正在添加中] ......
core model. It was observed that the leaching is composed of two stages. In the first stage a sharp increase in cerium leaching recovery was observed and at the longer time the leaching became slower... transfer in the solution is the controlling mechanism. Key words: rare earth elements; apatite; leaching; response surface methodology; shrinking core model 1 Introduction The demand for rare earth......
Effect of time on copper and cobalt leaching rates 2.3 高硅白合金硫酸氧化浸出动力学方程 关于不同物料的液固反应模型,其反应速度往往与液固的接触面积,物料在液中的扩散速度,反应中生成物的扩散速度等紧密相关.物料的液固反应最为典型的一种模型是收缩核模型(Shrinking core model,SCM).在高硅白合金酸浸过程中... from the scraps of spent aerospace magnetic materials[J]. Waste Management, 2018, 76: 663-670. [18] LIU W F, RAO S, WANG W Y, et al. Selective leaching of cobalt and iron from cobalt white alloy......
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 of Sciences摘 要:N31-type phosphate laser glasses doped with different concentrations of Cu were prepared. Their optical loss coefficient at 1053 nm wavelength......