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Microstructural characterization of blanked surface of C5191 phosphor bronze sheet under ultra-high-speed blanking

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Transactions of Nonferrous Metals Society of China 2021年第3期31卷 692-702页

作者： Dao-chun HU Ming-he CHEN Lei wang hong-jun wang Engineering Technology Training Center Nanjing Vocational University of Industry TechnologyNanjing 210023China Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China School of Mechanical Engineering Nanjing Vocational University of Industry TechnologyNanjing 210023China

The deformation mechanism of C5191 phosphor bronze sheet under ultra-high-speed blanking was *** virtue of a DOBBY-OMEGA F1 ultra-high-speed press,the ultra-high-speed blanking test was conducted on C5191 phosphor bronze sheets with a thickness of 0.12 mm at 3000 strokes per *** microstructures of the blanked edges were characterized and analyzed separately by electron back-scatter diffraction(EBSD)and transmission electron microscopy(TEM).The results show that grains in the blanked edges are stretched along the blanking ***{001}cube textures(maximum pole densities of 9 and 12,respectively)and secondarily strong{011}textures(maximum pole densities of 4 and 7,respectively)are formed in local ***,deformation twins are found in the shear zone of the blanked edges which are rotated and coarsened due to the blanking-induced extrusion and local thermal effect which can further form into sub-grains with clear and high-angle *** C5191 phosphor bronze sheet is subjected to adiabatic shear during ultra-high-speed blanking,accompanied with dynamic recrystallization.

关键词： C5191 phosphor bronze ultra-high-speed blanking blanked surface adiabatic shear dynamic recrystallization

Effects of 14 Single Herbs on the Induction of Caspase-3 in Tumor Cells： A Brief Review

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Chinese Journal of Integrative Medicine 2013年第8期19卷 636-640页

作者： hong-yan Tian 田洪艳 (11539) Zhi-xin Li 李质馨 (11539) hong-yu Li 李宏宇 (11539) hong-jun wang 王弘珺 (11539) Xin-wei Zhu 朱辛为 (11539) Zhao-hua Dou 窦肇华 (11539) 11539. Department of Histology and Embryology Jilin Medical College Jilin Jilin Province 132013 China

Chinese medicines （CMs） are increasingly being used for the treatment of tumors because of their unique advantages. The induction of tumor cell apoptosis is an important method of tumor treatment. Caspase-3 is a member of the caspase （cysteine aspartic proteinases） family of enzymes, which are the major inducers of apoptosis. Caspase-3 activity is often measured in the context of research into anti-tumor drugs that target apoptosis. Many studies have shown that CMs upreguiate the expression of caspase-3 in tumor cells via extrinsic and/or intrinsic pathways, removing endogenous suppression of apoptosis and promoting tumor cell death. Therefore, several CMs fulfill the criteria for anti-tumor drugs. In this paper, we review the efficacy of 14 Chinese herbal medicines, across a wide range applications, and discuss their effects on caspase-3 activity in tumor cells.

关键词： Chinese herbal medicines tumor cells apoptosis caspase-3

Effect of rapid cold stamping on fracture behavior of long strip S′phase in Al−Cu−Mg alloy

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Transactions of Nonferrous Metals Society of China 2020年第10期30卷 2590-2598页

作者： Cai-he FAN Ling OU Ze-yi HU Shu wang jun-hong wang College of Metallurgy and Material Engineering Hunan University of TechnologyZhuzhou 412007China Anhui Jianye Science and Technology Co. Ltd.Huaibei 235000China 208 Research Institute of China Ordnance Industries Beijing 102202China

High-angle annular dark-field scanning transmission electron microscopy and selected area electron diffraction techniques were used to study the mechanism that underlies the influence of rapid cold-stamping deformation on the fracture behavior of the elongated nanoprecipitated phase in extruded Al−Cu−Mg *** show that the interface between the long strip-shaped S′phase and the aluminum matrix in the extruded Al−Cu−Mg alloy is flat and breaks during rapid cold-stamping *** breaking mechanisms are distortion and brittle failure,redissolution,and *** breakage of the long strip S′phase increases the contact surface between the S′phase and the aluminum matrix and improves the interfacial distortion *** effect accounts for the higher free energy of the S′phase than that of the matrix and creates conditions for the redissolution of solute atoms back into the aluminum *** brittle S′phase produces a resolved step during rapid cold-stamping *** step further accelerates the diffusion of solute atoms and promotes the redissolution of the S′***,the S′phase necks and separates,and the long strip-shaped S′phase in the extruded Al−Cu−Mg alloy is broken into a short and thin S′phase.

关键词： Al−Cu−Mg alloy rapid cold stamping nanoprecipitate fracture behavior breaking mechanism

Simultaneous extraction of gold and zinc from refractory carbonaceous gold ore by chlorination roasting process

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Transactions of Nonferrous Metals Society of China 2020年第4期30卷 1111-1123页

作者： hong-jun wang Ya-li FENG Hao-ran LI Jin-xing KANG School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

A novel process based on chlorination roasting was proposed to simultaneously recover gold and zinc from refractory carbonaceous gold ore by using NaCl as chlorination *** effects of roasting temperature,roasting time and NaCl content on the volatilization rates of gold and zinc were *** reaction mechanism and the phase transition process were also analyzed by means of SEM,EDS and *** results demonstrated that under the optimal conditions of NaCl content of 10%,roasting temperature of 800℃,roasting time of 4 h and gas flow rate of 1 L/min,the rates of gold and zinc were 92%and 92.56%,*** low-temperature chlorination roasting stage,a certain content of sulfur was beneficial to the chlorination reactions of gold and zinc;and during high-temperature chlorination roasting stage,the crystal structure of vanadium-bearing mica was destroyed,and the vanadium-containing oxides were beneficial to the chlorinating volatilization of gold and ***,the chlorinated volatiles of gold and zinc could be recovered by alkaline solution.

关键词： refractory carbonaceous gold ore chlorination roasting thermodynamic calculation gold zinc

高分辨率机载InSAR高程距离向空变误差定标方法

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电子与信息学报 2016年第12期38卷 3245-3251页

作者：洪峻曾友兵王宇中国科学院电子学研究所北京100190 微波成像技术国家重点实验室北京100190 中国科学院大学北京100190

高分辨率机载干涉合成孔径雷达(Interferometric Synthetic Aperture Radar,InSAR)是获取高精度数字高程模型(Digital Elevation Model,DEM)的重要手段之一。由于主副天线距离向相位方向图存在差异等原因,导致干涉相位偏差沿距离向变化... 详细信息

高分辨率机载干涉合成孔径雷达(Interferometric Synthetic Aperture Radar,InSAR)是获取高精度数字高程模型(Digital Elevation Model,DEM)的重要手段之一。由于主副天线距离向相位方向图存在差异等原因,导致干涉相位偏差沿距离向变化,而传统的干涉定标方法将干涉相位偏差视为常数进行定标,无法消除干涉相位沿距离向变化的误差,因此使得定标后反演得到的高程存在距离向空变误差。针对该问题,该文提出一种单独将干涉相位偏差沿视角进行多项式拟合的定标方法。最后,利用一组机载实测数据对该方法加以验证,实验结果表明,该方法能有效地解决高分辨率机载InSAR高程测量距离向误差的空变问题。

关键词：干涉合成孔径雷达高分辨率干涉定标高程距离向空变误差干涉相位偏差

Reform on MCU Course of College Based on PROTEUS Platform

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Reform on MCU Course of College Based on PROTEUS Platform

Study on DNA Cytosine Methylation of Cotton (Gossypium hirsutum L.) Genome and Its Implication for Salt Tolerance

2013年教育技术与管理科学国际会议

作者： hong He Jin-Zhou ZHANG Lian LI hong-jun wang Tianjin Key Laboratory for Control Theory and Application in Complicated Systems Tianjin University of Technology

The measures and proposals of teaching reform in the MCU course based on PROTEUS platform are introduced in this paper. The reform of theoretical teaching and practical teaching is presented. At present, many colleges teach theoretical knowledge and practical experiment separately in the MCU course. In order to solve these common problems, a new teaching method combined theory and practice based on PROTEUS platform is proposed. This new teaching method is constructed by online teaching resource, experimental box, simulation platform and circuit emulator, it is mainly implemented through a specific program. It has proved that this new teaching method not only let students understand the MCU principles well, but also improve their capability to develop a systematic design.

关键词： Microcontroller Theoretical Teaching Practical Teaching PROTEUS Platform

来源： cnki会议评论

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Agricultural Sciences in China 2010年第6期9卷 783-791页

作者： ZHAO Yun-lei,YU Shu-xun,YE Wu-wei,wang hong-mei,wang jun-juan and FANG Bao-xing Cotton Research Institute,Chinese Academy of Agricultural Sciences (CAAS)/Key Laboratory of Cotton Genetic Improvement,Ministry of Agriculture,Anyang 455000,P.R.China Cotton Research Institute Chinese Academy of Agricultural Sciences (CAAS)/Key Laboratory of Cotton Genetic Improvement Ministry of Agriculture Anyang 455000 P.R.China

To study the relations between DNA methylation and abiotic stress responses in cotton （Gossypium hirsutum L.）,the methylation-sensitive amplified polymorphism （MSAP） method was used to investigate the differences in methylation level and the change of cytosine methylation patterns under salt （NaCl） stress in two different salt-tolerant cotton *** results showed that the number of the cytosine methylation of CCGG sites in high salt-tolerant cotton line was less than that in low salt-tolerant *** salt stress,extensive cytosine methylation alterations including hypermethylation and demethylation as well as the potential conversion of methylation types occurred in the salt-treated cotton line compared with the corresponding ***,salt stress-induced demethylation loci that occurred in high salt- tolerant cotton line were greater than those in low salt-tolerant cotton line,however,salt stress-induced hypermethylation loci in the high salt-tolerant cotton line were less than those in low salttolerant cotton *** suggested that the demethylation positively contributed to salt tolerance and the hypermethylation had negative effect on salt tolerance in cotton.

关键词： cotton DNA methylation salt stress MSAP methylation polymorphism

“从茶叶中提取咖啡因”综合性有机化学实验设计

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实验技术与管理 2018年第6期35卷 166-169,173页

作者：王虹王军江苏警官学院刑事科学技术系江苏南京210031

在有机化学实验教学过程中,实验内容通常是完成某一化合物的合成或提取,缺少对目标化合物的结构和性质检验。设计了"从茶叶中提取咖啡因"综合性实验,在原实验基础上优化了提取工艺,使操作过程易于控制,提高了提取收率,并对产物进行了熔... 详细信息

在有机化学实验教学过程中,实验内容通常是完成某一化合物的合成或提取,缺少对目标化合物的结构和性质检验。设计了"从茶叶中提取咖啡因"综合性实验,在原实验基础上优化了提取工艺,使操作过程易于控制,提高了提取收率,并对产物进行了熔点测定,以及紫外、荧光、红外、核磁共振、质谱的分析,确定目标化合物的结构和性质。通过对该实验的综合设计,不仅使学生掌握蒸馏、升华等单元操作,还能掌握有机化合物的结构确定过程,有利于学生综合实验能力的培养。

关键词：实验教学综合性实验设计咖啡因提取

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求解弹性波解耦方程的一种优化拟解析方法

地球物理学报 2017年第9期60卷 3555-3573页

作者：冯海新严君刘洪孙军王之洋中国科学院地质与地球物理研究所中国科学院油气资源研究重点实验室北京100029 中国科学院大学北京100049 苏黎世联邦理工学院唐山学院河北唐山063020

常规伪谱方法二阶时间差分格式时间精度较低,且对于大步长时间采样间隔,常规伪谱方法不稳定.拟解析方法对于速度变化剧烈的模型,在时间和空间上均有较大误差.本文提出了一种基于解耦的二阶位移弹性波方程波场模拟及矢量波场分解的优化... 详细信息

常规伪谱方法二阶时间差分格式时间精度较低,且对于大步长时间采样间隔,常规伪谱方法不稳定.拟解析方法对于速度变化剧烈的模型,在时间和空间上均有较大误差.本文提出了一种基于解耦的二阶位移弹性波方程波场模拟及矢量波场分解的优化拟解析方法,将归一化的拟拉普拉斯算子分别应用于P波和S波波场延拓,延拓矢量波场的同时,可分解并延拓纯纵波和纯横波波场.利用弹性波优化拟微分算子表示拟拉普拉斯算子,该拟微分算子不仅包括原始微分算子的谱估计,而且还包含一个时间补偿项,其可在波数-空间域精确地补偿波动方程在时间方向上采用二阶有限差分引起的误差.利用低秩分解近似求解弹性波优化拟微分算子,可有效提高计算效率.2D均匀模型、层状模型以及部分盐丘模型数值正演模拟结果表明:相比较于常规的伪谱法和拟解析法,本文方法在时间和空间上均有很高的精度,并且稳定性条件比较宽松.

关键词：二阶时间差分格式弹性波方程矢量波场分解低秩分解优化拟解析法