咨询与建议

限定检索结果

文献类型

  • 102,147 篇 期刊文献
  • 13,593 篇 会议
  • 2 册 图书

馆藏范围

  • 115,740 篇 电子文献
  • 2 种 纸本馆藏

日期分布

学科分类号

  • 47,413 篇 工学
    • 10,853 篇 化学工程与技术
    • 6,838 篇 材料科学与工程(可...
    • 4,648 篇 计算机科学与技术...
    • 3,751 篇 电子科学与技术(可...
    • 3,445 篇 软件工程
    • 3,365 篇 机械工程
    • 3,117 篇 控制科学与工程
    • 2,883 篇 仪器科学与技术
    • 2,212 篇 光学工程
    • 1,842 篇 生物医学工程(可授...
    • 1,705 篇 信息与通信工程
    • 1,703 篇 动力工程及工程热...
    • 1,703 篇 地质资源与地质工...
  • 34,362 篇 理学
    • 10,087 篇 化学
    • 8,735 篇 数学
    • 4,991 篇 生物学
    • 4,352 篇 物理学
    • 1,803 篇 系统科学
  • 30,558 篇 医学
    • 19,395 篇 临床医学
    • 3,857 篇 中西医结合
    • 3,738 篇 基础医学(可授医学...
    • 3,609 篇 药学(可授医学、理...
    • 2,121 篇 医学技术(可授医学...
    • 1,728 篇 公共卫生与预防医...
    • 1,713 篇 中药学(可授医学、...
  • 7,086 篇 管理学
    • 3,959 篇 管理科学与工程(可...
  • 6,995 篇 农学
    • 2,137 篇 作物学
  • 6,739 篇 教育学
    • 3,434 篇 教育学
    • 1,997 篇 体育学
  • 3,189 篇 经济学
    • 2,923 篇 应用经济学
  • 2,689 篇 文学
  • 2,039 篇 法学
  • 976 篇 历史学
  • 942 篇 哲学
  • 637 篇 艺术学
  • 316 篇 军事学

主题

  • 871 篇 中国
  • 635 篇 治疗
  • 539 篇 大鼠
  • 453 篇 诊断
  • 438 篇 合成
  • 287 篇 稀土
  • 280 篇 of
  • 239 篇 儿童
  • 237 篇 测定
  • 222 篇 高校
  • 218 篇 催化剂
  • 202 篇 apoptosis
  • 199 篇 设计
  • 185 篇 大学生
  • 181 篇 计算机
  • 180 篇 细胞凋亡
  • 178 篇 小鼠
  • 170 篇 应用
  • 170 篇 稳定性
  • 150 篇 磁共振成像

机构

  • 2,220 篇 北京大学
  • 1,883 篇 清华大学
  • 1,830 篇 南京大学
  • 1,806 篇 同济大学
  • 1,420 篇 四川大学
  • 1,347 篇 复旦大学
  • 1,243 篇 武汉大学
  • 1,226 篇 上海交通大学
  • 1,160 篇 吉林大学
  • 1,098 篇 浙江大学
  • 1,084 篇 华东师范大学
  • 1,069 篇 厦门大学
  • 932 篇 南开大学
  • 878 篇 西安交通大学
  • 875 篇 山东大学
  • 797 篇 西北大学
  • 775 篇 天津大学
  • 753 篇 中山大学
  • 734 篇 首都师范大学
  • 686 篇 华中科技大学

作者

  • 1,379 篇 china
  • 178 篇 tsinghua univers...
  • 77 篇 china)
  • 75 篇 shanghai
  • 70 篇 beijing
  • 62 篇 张敏
  • 60 篇 p.r.china
  • 58 篇 哈木拉提·吾甫尔
  • 46 篇 张波
  • 40 篇 郑哲民
  • 38 篇 冯新德
  • 35 篇 刘杰
  • 32 篇 huazhong univers...
  • 32 篇 朱长庚
  • 32 篇 china.
  • 29 篇 莫雷
  • 29 篇 beijing 100084
  • 28 篇 苏文辉
  • 26 篇 王东
  • 26 篇 陈鹏

语言

  • 82,241 篇 中文
  • 33,499 篇 英文
  • 1 篇 法文
  • 1 篇 日文
检索条件"作者=4 Department of Source and Environment,liaoning {2. university,fuxin 12.000,China"
115742 条 记 录,以下是71-80 订阅
排序:
Electro-mechanical response of functionally graded beams with imperfectly integrated surface piezoelectric layers
收藏 引用
Science china(Physics,Mechanics & Astronomy) 2006年 第5期49卷 513-525页
作者: YAN Wei1 & CHEN Weiqiu1,2.1. department of Civil Engineering, Zhejiang university, Hangzhou 31002., {2. 2. State Key Lab of CAD & CG, Zhejiang university, Hangzhou 31002., {2. 1. department of Civil Engineering Zhejiang University Hangzhou 310027 China 2. State Key Lab of CAD & CG Zhejiang University Hangzhou 310027 China
The time-dependent behavior of a simply-supported functionally graded beam bonded with piezoelectric sensors and actuators is studied using the state-space method. The creep behavior of bonding adhesives between piezo... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Construction of a genetic map and localization of QTLs for yield traits in tomato by SSR markers
收藏 引用
Progress in Natural Science:Materials International 2005年 第9期15卷 793-797页
作者: LIU Yang 1,2., CHEN Huoying1**, WEI Yutang2.and ZHUANG Tianming1(1. department of Plant Science, Shanghai Jiaotong university, Shanghai 2.1101, {2. 2. department of Horticulture, Shenyang Agricultural university, Shenyang 110161, {2.) department of Plant Science Shanghai Jiaotong University Shanghai 201101 China. department of Horticulture Shenyang Agricultural University Shenyang 110161 China
Using an F2.opulation derived from the hybrid of Lycopersicon esculentum Mill. ‘XF 98-7’× Lycopersicon pimpinellifolium LA2.84, a SSR genetic linkage map of tomato is constructed. The map contains 112.markers and s... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
s-ordering operator expansions of quantum-mechanical fundamental representations and their applications
收藏 引用
Science china(Physics,Mechanics & Astronomy) 2011年 第12期54卷 2150-2154页
作者: FAN HongYi 1,3 , XU YeJun 2.& YUAN HongChun 3,4 1 department of Materials Science and Engineering, university of Science and Technology of {2., Hefei 2.002., {2. 2.department of Physics Electronic and Engineering, Chizhou university, Chizhou 2.7000, {2. 3 department of Physics, Shanghai Jiao Tong university, Shanghai 2.0030, {2. 4 College of Optoelectronic Engineering, Changzhou Institute of Technology, Changzhou 2.3002. {2. 1. department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 China3. Department of Physics Shanghai Jiao Tong University Shanghai 200030 China2. Department of Physics Electronic and Engineering Chizhou University Chizhou 247000 China4. College of Optoelectronic Engineering Changzhou Institute of Technology Changzhou 213002 China
We show that the quantum-mechanical fundamental representations, say, the coordinate representation, the coherent state representation, the Fan-Klauder entangled state representation can be recast into s-ordering oper... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Effect of Substrate-Water Interaction on the Wetting Behavior in Water-Oil and Substrate-Water-Oil Systems
收藏 引用
Wuhan university Journal of Natural Sciences 2003年 第4A期8卷 1097-1102页
作者: Yuan Yin-quan 1,2., Zou Xian-wu 1 , Jin Zhun-zhi 1 1. School of Physics and Technology, Wuhan university, Wuhan 430072. Hubei, china 2. {2. of Physics, Xiaogan university, Xiaogan 432.00, Hubei, china Wuhan university School of Physics and Technology Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***) Xiaogan university Department of Physics Xiaogan Hubei China (GRID:grid.49470.3e) Wuhan university School of Physics and Technology Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***)
The effects of the substrate-water interaction on the wetting behavior in water-oil and surfactant-water-oil systems confined by one substrate which has the preferential interaction to one species of particles have be... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Direct numerical simulation of a supersonic turbulent boundary layer on a flat plate and its analysis
收藏 引用
Science china(Physics,Mechanics & Astronomy) 2005年 第5期48卷 626-640页
作者: HUANG Zhangfeng1, ZHOU Heng1,2.& LUO Jisheng1,2.1. department of Mechanics, Tianjin university, Tianjin 300072. {2. 2. Liu-Hui Center of Applied Mathematics, Nankai university and Tianjin university, Tianjin 300072. {2. 1. department of Mechanics Tianjin University 300072 Tianjin China 2. Liu-Hui Center of Applied Mathematics Nankai University and Tianjin University 300072 Tianjin China
Temporal mode direct numerical simulation (DNS) has been done for a supersonic turbulent boundary layer on a flat plate with Mach number 4.5. It was found that the mean flow profile, the normal-wise distribution of tu... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
The regular representation and regular covariant representation of crossed products of Woronowicz C^(*)-algebras
收藏 引用
Science china Mathematics 2005年 第9期48卷 1245-1259页
作者: ZHANG Xiaoxia~(1,2. & GUO Maozheng~(1,3) 1. School of Mathematical Sciences,Peking university,Beijing 100871,china 2. {2. of Mathematics,Yantai university,Yantai 2.4005,china 3. LMAM,Peking university,Beijing 100871,china 1. School of Mathematical Sciences Peking University 100871 Beijing China 2. department of Mathematics Yantai University 264005 Yantai China 3. LMAM Peking University 100871 Beijing China
In this paper,it is shown that the regular representation and regular covariant representation of the crossed products A×α G correspond to the twisted multiplicative unitary operators,where A is a Woronowicz C~*-alg... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Relationships between bacterial-algal proliferating and mass extinction in the Late Devonian Frasnian-Famennian transition:Enlightening from carbon isotopes and molecular fossils
收藏 引用
Science china Earth Sciences 2005年 第10期48卷 1656-1665页
作者: GONG Yiming1,2. XU Ran1, TANG Zhongdao1, SI Yuanlan3 & LI Baohua4 1. Faculty of Earth Science and State Key Laboratory of Geological Processes and Mineral Resources, china {2. of Geosciences, Wuhan 430074, china 2. Institute of Resources & environments, Henan Polytechnic {2., Jiaozuo 454003, china 3. department of Computer Science, South-Central {2. for Nationalities, Wuhan 430074, china 4. Laboratory of Marine Geology, Tongji {2., Shanghai 2.0092. china Faculty of Earth Science and State Key Laboratory of Geological Processes and Mineral Resources china {2. of Geosciences Wuhan china Institute of Resources & environments Henan Polytechnic {2. Jiaozuo china department of Computer Science South-Central university for Nationalities Wuhan {2. Laboratory of Marine Geology Tongji university Shanghai china
Studies show positive shifts of inorganic and organic carbon isotope values (δ 13Ccarb and δ 13Ckerogen) from +0.43 (‰ V-PDB) to +3.54 (‰ V-PDB) and from ?2..38 (‰ V-PDB) to ?2..14 (‰ V-PDB), respectively, B* (B... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
A Feedback-Based Web Search Engine
收藏 引用
Wuhan university Journal of Natural Sciences 2004年 第5期9卷 561-568页
作者: ZHANG Wei-feng 1,2.3 , XU Bao-wen 2.3,4 , ZHOU Xiao-yu 2.3,4 1. department of Computer Science and Engineering, Nanjing university of Posts and Telecommunications, Nanjing 2.0003, Jiangsu, {2. 2. department of Computer Science and Engineering, Southeast university, Nanjing 2.0096, Jiangsu, {2. 3. Jiangsu Institute of Software Quality, Nanjing 2.0096 Jiangsu, {2. 4. The State Key Laboratory of Software Engineering, Wuhan university, Wuhan 430072. Hubei, {2. department of Computer Science and Engineering Nanjing University of Posts and Telecommunications . Nanjing 210003 Jiangsu China
Web search engines are very useful information service tools in the Internet. The current web search engines produce search results relating to the search terms and the actual information collected by them. Since the ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
TGF-β_1 in retinal ganglion cells in rats with chronic ocular hypertension: its expression and anti-apoptotic effect
收藏 引用
International Journal of Ophthalmology(English edition) 2011年 第4期4卷 396-401页
作者: Yong-Jian Tao 1, Dian-Wen Gao 1, Miao Yu 2.1department of Ophthalmology, Shengjing Hospital of china Medical {2., Shenyang 110004, liaoning Province, china 2.Shenyang Pharmaceutical {2., Shenyang 110016, liaoning Province, china department of Ophthalmology Shengjing Hospital of China Medical University Shenyang 110004 Liaoning Province China Shenyang Pharmaceutical university Shenyang 110016 Liaoning Province China
AIM: To investigate the anti-apoptotic effect of transforming growth factor beta-1 (TGF-β1) on chronic ocular hypertension. METHODS: The expression of TGF-β1 in retinal ganglion cells (RCGs) was measured using the i... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Research and application of flood damage evaluation information system
收藏 引用
中国有色金属学会会刊:英文版 2005年 第S1期15卷 204-207页
作者: SHI Jin-feng~1, WU Zhi-zhou~2. SONG Wei-dong~1 (1. liaoning Technical university, {2., china 2. Tongji university, Shanghai 2.0092. china) liaoning Tech Univ Fuxing 123000 Peoples R China Tongji Univ Shanghai 200092 Peoples R China
The fast evaluation method of flood damages was explored with the combination of high technologies, such as remote sensing (RS) and geographic information system (GIS), namely the land classification and extraction of... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论