咨询与建议

限定检索结果

文献类型

  • 60,218 篇 期刊文献
  • 12,237 篇 会议
  • 3 册 图书

馆藏范围

  • 72,455 篇 电子文献
  • 3 种 纸本馆藏

日期分布

学科分类号

  • 25,815 篇 工学
    • 6,064 篇 化学工程与技术
    • 3,516 篇 材料科学与工程(可...
    • 2,317 篇 电子科学与技术(可...
    • 2,133 篇 控制科学与工程
    • 2,130 篇 仪器科学与技术
    • 2,119 篇 机械工程
    • 1,767 篇 计算机科学与技术...
    • 1,695 篇 光学工程
    • 1,635 篇 软件工程
    • 1,322 篇 力学(可授工学、理...
  • 20,262 篇 医学
    • 9,258 篇 临床医学
    • 4,928 篇 中西医结合
    • 2,804 篇 中药学(可授医学、...
    • 2,537 篇 药学(可授医学、理...
    • 2,233 篇 中医学
    • 1,510 篇 基础医学(可授医学...
    • 1,448 篇 公共卫生与预防医...
  • 19,929 篇 理学
    • 6,740 篇 化学
    • 3,438 篇 数学
    • 2,970 篇 生物学
    • 2,317 篇 物理学
    • 1,380 篇 系统科学
  • 5,382 篇 农学
    • 1,692 篇 作物学
    • 1,446 篇 农业资源与环境
  • 4,588 篇 管理学
    • 1,830 篇 管理科学与工程(可...
    • 1,561 篇 公共管理
  • 4,024 篇 文学
    • 2,619 篇 中国语言文学
  • 3,336 篇 教育学
    • 1,406 篇 教育学
    • 1,282 篇 体育学
  • 2,126 篇 法学
  • 2,043 篇 经济学
    • 1,759 篇 应用经济学
  • 915 篇 历史学
  • 877 篇 哲学
  • 521 篇 艺术学
  • 125 篇 军事学

主题

  • 1,133 篇 中国
  • 632 篇 稀土
  • 603 篇 治疗
  • 348 篇 专家共识
  • 315 篇 诊断
  • 231 篇 大鼠
  • 211 篇 of
  • 191 篇 中医药疗法
  • 190 篇 中药
  • 144 篇 合成
  • 143 篇 synthesis
  • 137 篇 指南
  • 131 篇 配合物
  • 116 篇 实验研究
  • 111 篇 crystal structur...
  • 107 篇 and
  • 102 篇 化学成分
  • 98 篇 共识
  • 97 篇 acid
  • 95 篇 china

机构

  • 898 篇 北京大学
  • 692 篇 山东大学
  • 673 篇 清华大学
  • 605 篇 南京大学
  • 588 篇 复旦大学
  • 547 篇 中国科学院大学
  • 544 篇 武汉大学
  • 529 篇 上海交通大学
  • 526 篇 浙江大学
  • 515 篇 四川大学
  • 491 篇 上海中医药大学
  • 424 篇 同济大学
  • 401 篇 南开大学
  • 374 篇 北京师范大学
  • 320 篇 中国科学技术大学
  • 311 篇 吉林大学
  • 311 篇 中山大学
  • 266 篇 天津大学
  • 256 篇 华中科技大学
  • 236 篇 天津中医药大学

作者

  • 1,611 篇 china
  • 173 篇 p.r.china
  • 164 篇 beijing
  • 140 篇 tsinghua univers...
  • 109 篇 shanghai
  • 99 篇 chinese academy ...
  • 89 篇 2 graduate unive...
  • 69 篇 china.
  • 62 篇 哈木拉提·吾甫尔
  • 51 篇 china)
  • 41 篇 张敏
  • 39 篇 zhejiang univers...
  • 32 篇 张波
  • 27 篇 张杰
  • 25 篇 changsha
  • 24 篇 王建华
  • 23 篇 李燕
  • 22 篇 刘娜
  • 21 篇 栗美娜
  • 20 篇 刘杰

语言

  • 44,875 篇 中文
  • 27,583 篇 英文
检索条件"作者=3.graduate university of chinese {2. of {2.,{3. 100049,China"
72458 条 记 录,以下是31-40 订阅
排序:
Nitrogen isotopic geochemical characteristics of crude oils in several basins of china
收藏 引用
Science china Earth Sciences 2005年 第8期48卷 1211-1219页
作者: CHEN Chuanping1,2. MEI Bowen1 & CAO Yacheng3.1. Jianghan Petroleum university, Jingzhou 43.100, china 2. Huazhong university of Science and Technology, Wuhan 43.047, china 3. Nanjing Institute of Soil Science, chinese Academy of Sciences, Nanjing 2.0008, china 1. Jianghan Petroleum university 434100 Jingzhou China 2. Huazhong university of Science and Technology 430047 Wuhan China 3. Nanjing Institute of Soil Science Chinese Academy of Sciences 210008 Nanjing China
Nitrogen isotopic ratios of crude oils with different physical and chemical properties in several basins of china have been measured and their geochemistry has been studied ele-mentally combined with molecular organic... 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 formal model of fair exchange protocols
收藏 引用
Science in china(Series F) 2005年 第4期48卷 499-512页
作者: QING Sihan1,2.3.& LI Gaicheng1,2.3.1. Engineering Research Center for Information Security Technology, Institute of Software, chinese Aca- demy of Sciences, Beijing 100080, {3. 2. Beijing Zhongke Ansheng Corporation of Information Technology, Beijing 100080, {3. 3. graduate School of the chinese Academy of Sciences, Beijing 10003., {3. 1. Engineering Research Center for Information Security Technology Institute of Software Chinese Academy of Sciences 100080 Beijing China 2. Beijing Zhongke Ansheng Corporation of Information Technology 100080 Beijing China 3. graduate School of the chinese Academy of Sciences 100039 Beijing China
Based on the study of existing fair exchange protocols, this paper sets up an accurate formal model by stepwise refinement. In the process of refinement an unreliable channel is employed to simulate an attack behavior... 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
Impacts of permafrost changes on alpine ecosystem in Qinghai-Tibet Plateau
收藏 引用
Science china Earth Sciences 2006年 第11期49卷 1156-1169页
作者: WANG Genxu1,3., LI Yuanshou2., WU Qingbai2.& WANG Yibo3.1. Institute of Mountain Hazards and Environment, chinese Academy of Sciences, Chengdu 610041, {3. 2. Cold and Arid Regions Environmental and Engineering Research Institute, chinese Academy of Sciences, Lanzhou 73.000, {3. 3. Resource and Environment School, Lanzhou university, Lanzhou 73.000, {3. 1. Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China 3. Resource and Environment School Lanzhou University Lanzhou 730000 China 2. Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China
Alpine cold ecosystem with permafrost environment is quite sensitive to climatic changes and the changes in permafrost can significantly affect the alpine ecosystem. The vegetation coverage, grassland biomass and soil... 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
Modeling and verifying Web services driven by requirements:An ontology-based approach
收藏 引用
Science in china(Series F) 2006年 第6期49卷 792-820页
作者: HOU Lishan1,3.JIN ZHi1,2.& WU Budan1,4 1. Academy of Mathematics and Systems Science, chinese Academy of Sciences, Beijing 100080, china 2. Institute of Computing Technology, chinese Academy of Sciences, Beijing 100080, china 3. Institute of Software, chinese Academy of Sciences, Beijing 100080, china 4. graduate university of chinese Academy of Sciences, Beijing 100049, china 1. Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 China 3. Institute of Software Chinese Academy of Sciences Beijing 100080 China 2. Institute of Computing Technology Chinese Academy of Sciences Bejing 100080 China 4. graduate university of {2. Academy of Sciences Beijing 100049 China
Automatic discovery and composition of Web services is an important research area in Web service technology, in which the specification of Web services is a key issue. This paper presents a Web service capability desc... 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
Integrated precise orbit determination of Shenzhou IV unmanned spacecraft
收藏 引用
Science china(Technological Sciences) 2004年 第5期47卷 518-525页
作者: L Congmin1,2. GU Yidong3. LIN Baojun3.& GUO Jiong3.1. Center for Space Science and Applied Research, chinese Academy of Sciences, Beijing 100080, china 2. {2. School of the chinese Academy of Sciences, Beijing 10003., china 3. General Establishment of Space Science and Application, chinese Academy of Sciences, Beijing 100080, china Correspondence should be addressed to L Congmin 1. Center for Space Science and Applied Research Chinese Academy of Sciences 100080 Beijing China 2. graduate School of the chinese Academy of Sciences 100039 Beijing China 3. General Establishment of Space Science and Application Chinese Academy of Sciences 100080 Beijing China
Considering the characteristic orbit of Shenzhou IV spacecraft and the advantages and disadvantages of several types of domestic orbit measurements, a scheme of IPOD is determined, which uses GPS, SLR and USB observat... 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
Compression behavior of Zr_(41)Ti_(14)Cu_(12.5)Ni_(10)Be_(2..5) bulk metallic glass up to 2. GPa
收藏 引用
Science china(Physics,Mechanics & Astronomy) 2005年 第3期48卷 319-324页
作者: LI Gong 1, 2., ZHAN Zaiji 2., LIU Jing 3., YUN Jinku 1 , SUN Liling 2., LIU Riping 1 , ZHANG Jun 2.& WANG Wenkui 1, 2.1. Key Laboratory of Metastable Materials Science and Technology, Yanshan university, Qinhuangdao 066004, china 2. Center for Condensed Matter Physics, Institute of Physics, {2. Academy of Sciences, Beijing 100080, china 3. BSRF, Institute of High Energy Physics, {2. Academy of Sciences, Beijing 10003., china 1. Key Laboratory of Metastable Materials Science and Technology Yanshan University 066004 Qinhuangdao China 2. Center for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences 100080 Beijing China 3. BSRF Institute of High Energy Physics Chinese Academy of Sciences 100039 Beijing China
The compression of a Zr41Ti14Cu12.5Ni10Be2..5 bulk metallic glass (BMG) is investigated at room temperature up to 2. GPa using in-situ high pressure energy dispersive X-ray diffraction with a synchrotron radiation sou... 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
Birthrates and delay times of Type Ia supernovae
收藏 引用
Science china(Physics,Mechanics & Astronomy) 2010年 第3期53卷 586-590页
作者: WANG Bo1,2.3. LIU ZhengWei1,2.3. HAN YunKun1,2.3. LEI ZhenXin1,2.3. LUO YangPing1,2.3.& HAN ZhanWen1,2.1National Astronomical Observatories/Yunnan Observatory, chinese Academy of Sciences, Kunming 650011, china 2.ey Laboratory for the Structure and Evolution of Celestial Objects, chinese Academy of Sciences, Kunming 650011, china 3.11} university of chinese Academy of Sciences, Beijing 100049, china 1. National Astronomical Observatories/Yunnan Observatory Chinese Academy of Sciences Kunming 650011 China2. Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of Sciences Kunming 650011 China3. Graduate University of Chinese Academy of Sciences Beijing 100049 China
Type Ia supernovae (SNe Ia) play an important role in diverse areas of astrophysics, from the chemical evolution of galaxies to observational cosmology. However, the nature of the progenitors of SNe Ia is still unclea... 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
Thermal analysis of the baffle structure of the Solar Space Telescope
收藏 引用
Science china(Physics,Mechanics & Astronomy) 2010年 第9期53卷 1755-1764页
作者: LI Rong1,2.3.& WANG Sen1,3.1 National Astronomical Observatories,chinese Academy of Sciences,Beijing 100012.{3. 2.{2. university of chinese Academy of Sciences,Beijing 100049,{3. 3.Key Laboratory of Solar Activity,National Astronomical Observatories of chinese Academy of Sciences,Beijing 100012.{3. 1. National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China2. Graduate University of Chinese Academy of Sciences Beijing 100049 China3. Key Laboratory of Solar Activity National Astronomical Observatories of Chinese Academy of Sciences Beijing 100012 China
The SST(Space Solar Telescope) is an astronomical telescope with a primary mirror of 1 m in *** observes the sun with a small view field to ensure that its high spatial resolution imaging has 0.1″-0.15″ and high SNR... 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
Eclogites in the interior of the Tibetan Plateau and their geodynamic implications
收藏 引用
chinese Science Bulletin 2009年 第15期54卷 2556-2567页
作者: ZHANG KaiJun1,2.& TANG XianChun2.3.1 Department of Earth Sciences, Nanjing university, Nanjing 2.0093. china 2.Guangzhou Institute of Geochemistry, {2. Academy of Sciences, Guangzhou 510640, china 3.graduate university of {2. Academy of Sciences, Beijing 100049, china Department of Earth Sciences Nanjing University Nanjing 210093 China Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China graduate university of {2. Academy of Sciences Beijing 100049 China
Eclogites have been recently reported in the interior of the Tibetan Plateau, including in the central Qiangtang metamorphic belt, in the Basu metamorphic massif of the eastern Bangong-Nujiang suture zone, and at Song... 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
Two possible mechanisms for vortex self-organization
收藏 引用
Science china Earth Sciences 2006年 第2期49卷 202-211页
作者: LUO Zhexian2. ZHOU Xiuji1 & GAO Shouting3.1. chinese Academy of Meteorological Sciences, Beijing 100081, china 2. Department of Space Information Science, Nanjing {2. of Information Science and Technology, Nanjing 2.0044, china 3. Institute of Atmospheric Physics, chinese Academy of Sciences, Beijing 10002., china 2. Department of Environmental Science Nanjing University of Information Science and Technology Nanjing 210044 China 1. chinese Academy of Meteorological Sciences Beijing 100081 China 3. Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China
The vortex self-organization is investigated in this paper by four groups of numerical experiments within the framework of quasi-geostrophic model, and based on the experimental results two types of possible mechanism... 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