咨询与建议

限定检索结果

文献类型

  • 94,312 篇 期刊文献
  • 3,114 篇 会议
  • 2,033 册 图书
  • 43 篇 学位论文
  • 3 篇 报纸

馆藏范围

  • 98,556 篇 电子文献
  • 993 种 纸本馆藏

日期分布

学科分类号

  • 41,323 篇 工学
    • 7,518 篇 材料科学与工程(可...
    • 4,647 篇 化学工程与技术
    • 3,578 篇 机械工程
    • 3,297 篇 生物医学工程(可授...
    • 2,648 篇 计算机科学与技术...
    • 2,225 篇 电子科学与技术(可...
    • 1,981 篇 软件工程
    • 1,958 篇 电气工程
    • 1,944 篇 仪器科学与技术
    • 1,883 篇 动力工程及工程热...
    • 1,849 篇 土木工程
    • 1,806 篇 水利工程
    • 1,759 篇 地质资源与地质工...
  • 31,965 篇 医学
    • 23,132 篇 临床医学
    • 3,556 篇 医学技术(可授医学...
    • 3,223 篇 基础医学(可授医学...
    • 3,205 篇 中西医结合
    • 2,480 篇 公共卫生与预防医...
    • 2,093 篇 药学(可授医学、理...
  • 15,388 篇 理学
    • 3,053 篇 化学
    • 2,630 篇 物理学
    • 2,561 篇 生物学
    • 1,884 篇 数学
    • 1,462 篇 地质学
  • 8,901 篇 农学
    • 2,416 篇 作物学
    • 1,725 篇 农业资源与环境
  • 5,138 篇 管理学
    • 2,178 篇 管理科学与工程(可...
    • 1,512 篇 公共管理
  • 2,924 篇 教育学
    • 2,258 篇 教育学
  • 2,613 篇 经济学
    • 2,276 篇 应用经济学
  • 1,670 篇 法学
  • 1,402 篇 文学
  • 717 篇 历史学
  • 654 篇 艺术学
  • 484 篇 哲学
  • 206 篇 军事学

主题

  • 591 篇 ct
  • 489 篇 mri
  • 281 篇 治疗
  • 255 篇 mr
  • 242 篇 数值模拟
  • 242 篇 诊断
  • 241 篇 病人
  • 221 篇 儿童
  • 210 篇 美国
  • 208 篇 应用
  • 185 篇 中国
  • 183 篇 预后
  • 175 篇 患者
  • 172 篇 产量
  • 141 篇 大鼠
  • 133 篇 免疫组织化学
  • 131 篇 影响因素
  • 130 篇 covid-19
  • 125 篇 危险因素
  • 115 篇 of

机构

  • 437 篇 中国科学院大学
  • 385 篇 北京大学
  • 350 篇 西北农林科技大学
  • 333 篇 东北大学
  • 332 篇 浙江大学
  • 323 篇 西安交通大学
  • 306 篇 华南农业大学
  • 303 篇 清华大学
  • 289 篇 同济大学
  • 286 篇 上海交通大学
  • 275 篇 吉林大学
  • 215 篇 中国地质大学
  • 213 篇 中国矿业大学
  • 211 篇 天津大学
  • 203 篇 南京大学
  • 203 篇 四川大学
  • 186 篇 大连理工大学
  • 182 篇 华中科技大学
  • 174 篇 西南大学
  • 163 篇 河北医科大学第四...

作者

  • 172 篇 张恩
  • 172 篇 李恩
  • 167 篇 单保恩
  • 129 篇 叶鹏
  • 114 篇 陈恩
  • 107 篇 王宝恩
  • 106 篇 章家恩
  • 104 篇 林礼务
  • 85 篇 f.krauss
  • 85 篇 g.weiglein
  • 84 篇 h.murayama
  • 80 篇 李军
  • 79 篇 j.parsons
  • 79 篇 j.d.jackson
  • 75 篇 g.d'ambrosio
  • 71 篇 刘恩岐
  • 71 篇 r.s.chivukula
  • 68 篇 刘莉
  • 56 篇 george f.gao
  • 54 篇 李怀恩

语言

  • 79,082 篇 中文
  • 20,408 篇 英文
  • 2 篇 其他
  • 1 篇 法文
检索条件"作者=Can y.F.y.en"
99505 条 记 录,以下是11-20 订阅
排序:
fundamental Research on Convective Heat Transfer in Electronic Cooling Technology
收藏 引用
Journal of Thermal Science 1992年 第1期1卷 30-40页
作者: C.f.Ma y.P.can y.Q.Tian D.H.Lei Beijing Polytechnic University Beijing 100022China
During the past six years comprehensive research programs have been conducted at the Beijing Polytechnic University to provide a better understanding of heat transfer characteristics of existing and condidate cool- in... 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
friction stir spot welding of SPCC low carbon steel plates at extremely low welding temperature
收藏 引用
Journal of Materials Science & Technology 2019年 第5期35卷 733-741页
作者: y.f.Sun H.fujii y.Sato y.Morisada Joining and Welding Research Institute Osaka University 11-1 Mihogaoka Ibaraki 567-004Japan School of Materials Science and engineering Zhengzhou University Zhengzhou 450001 China
friction stir spot welding (fSSW) was applied to 2.0 mm thick steel plate cold-rolled commercial (SPCC) low carbon steel plates at a very low rotation speed that ranged from 5 to 50rpm, which was much lower than that ... 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
In vitro Study on Biodegradable AZ31 Magnesium Alloy fibers Reinforced PLGA Composite
收藏 引用
Journal of Materials Science & Technology 2013年 第6期29卷 545-550页
作者: y.H.Wu N.Li y.Cheng y.f.Zheng y.Han Center for Biomedical Materials and Tissue engineering Academy for Advanced Interdisciplinary StudiesPeking University Department of Materials Science and engineering College of EngineeringPeking University State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University
AZ31 magnesium alloy fibers reinforced poly(lactic-co-glycolic acid) (PLGA) composites were prepared and their mechanical property, immersion corrosion behavior and biocompatibility were studied. The tensile test ... 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 preferential growth and related textural evolution during static recrystallization in a cold-rolled Mg-Zn-Gd alloy
收藏 引用
Journal of Magnesium and Alloys 2021年 第3期9卷 818-828页
作者: L.y.Zhao H.yan R.S.Chen en-Hou Han The Group of Magnesium Alloys and Their Applications Institute of Metal ResearchChinese Academy of Sciences62 Wencui RoadShenyang 110016China School of Materials Science and engineering University of Science and Technology of China72 Wenhua RoadShenyang 110016China
The grain growth process plays an important role in the texture formation in magnesium *** microstructural and micro-textural evolution of a cold-rolled Mg-Zn-Gd alloy during annealing at 350℃for 60-190 min were trac... 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
Quantified evaluation of particle shape effects from micro-to-macro scales for non-convex grains
收藏 引用
Particuology 2016年 第2期14卷 23-35页
作者: y. yang J.f. Wang y.M. Cheng Department of Civil and environmental engineering The Hong Kong Polytechnic University Hong Kong China Department of Civil and Architectural engineering City University of Hong Kong Hong Kong China
Particle shape plays an important role in both the micro and macro scales responses of a granular assem- bly. This paper presents a systematic way to interpret the shape effects of granular material during quasi-stati... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Orientations of nuclei during static recrystallization in a cold-rolled Mg-Zn-Gd alloy
收藏 引用
Journal of Materials Science & Technology 2021年 第1期60卷 162-167页
作者: L.y.Zhao H.yan R.S.Chen en-Hou Han The Group of Magnesium Alloys and Their Applications Institute of Metal ResearchChinese Academy of Sciences62 Wencui RoadShenyang 110016China School of Materials Science and engineering University of Science and Technology of China72 Wenhua RoadShenyang 110016China
The static recrystallization process of a cold-rolled Mg-Zn-Gd alloy was tracked by a quasi-in-situ electron backscatter diffraction method to investigate the orientations of *** results show that orientation distribu... 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
PURIfICATION Of COBALT ANOLyTE USING THE NOVEL SOLVenT EXTRACTION SySTEM
收藏 引用
Acta Metallurgica Sinica(english Letters) 2003年 第2期16卷 114-121页
作者: y.f.Shen W.y.Xue W.y.Niu Jinchuan Non-ferrous Metals Complex Jinchuan 737100ChinaState Key Laboratory of Rolling and AutomationNortheastern UniversityShenyang 110014ChinaState Key Laboratory of Rolling and AutomationNortheastern UniversityShenyang 110014ChinaState Key Laboratory of Rolling and AutomationNortheastern UniversityShenyang 110014China
In present research, a novel extractant system (D2EHPA + naphthenic acid + pyridine- ester) was used to purify cobalt anolyte and a simulated industrial production were carried out. This novel extraction system can ex... 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 post-bond heat treatment on the microstructure and high temperature mechanical property of a TLP bonded γ'-strengthened co-based single crystal superalloy
收藏 引用
Journal of Materials Science & Technology 2021年 第21期80卷 244-258页
作者: S.y.Wang y.Sun C.y.Cui X.f.Sun y.Z Zhou y.M.Ma H.L.An Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and engineering University of Science and Technology of ChinaHefei 230026China Harbin Welding Institute China Academy of Machinery Science and TechnologyHarbin 150028China
Post-bond heat treatment(PBHT) applied to a transient liquid phase(TLP) bonding joint is an effective approach to remove the brittle borides and improve its ***,we proposed two types of PBHT strategies to obtain a TLP... 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
Trans-scale mechanics: looking for the missing links between continuum and micro/nanoscopic reality
收藏 引用
Acta Mechanica Sinica 2008年 第2期24卷 111-126页
作者: y.L.Bai H.y.Wang M.f.Xia f.J.Ke State Key Laboratory of Non-linear Mechanics (LNM) Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China State Key Laboratory of Non-linear Mechanics (LNM) Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Department of Physics Peking University Beijing 100871 China State Key Laboratory of Non-linear Mechanics (LNM) Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Department of Applied Physics Beihang University Beijing 100083 China
Problems involving coupled multiple space and time scales offer a real challenge for conventional frame-works of either particle or continuum mechanics. In this paper, four cases studies (shear band formation in bulk... 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
MICROSTRUCTURE ANALySIS AND MECHANICAL PROPERTIES Of Zn-Al ALLOy ROD PRODUCED By HEATED MOLD CONTINUOUS CASTING
收藏 引用
Acta Metallurgica Sinica(english Letters) 2003年 第3期16卷 241-248页
作者: y.Ma y.Hao f.y.yan H.J.Liu State Key Laboratory of Advanced Nonferrous Materials Lanzhou University of Science & Technology Lanzhou 730050 ChinaState Key Laboratory of Advanced Nonferrous Materials Lanzhou University of Science & Technology Lanzhou 730050 ChinaState Key Laboratory of Advanced Nonferrous Materials Lanzhou University of Science & Technology Lanzhou 730050 ChinaSchool of Mechano-Electronic EngineeringHua Qian University Quanzhou 362011China
The new technology of continuous casting by heated mold was used to produce directional solidification ZA alloy lines to eliminate the inter defects of these lines and increase their mechanical properties. The results... 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