咨询与建议

限定检索结果

文献类型

  • 42,268 篇 期刊文献
  • 1,581 篇 会议
  • 1,465 册 图书
  • 37 篇 学位论文
  • 16 篇 报纸

馆藏范围

  • 44,739 篇 电子文献
  • 658 种 纸本馆藏

日期分布

学科分类号

  • 17,475 篇 工学
    • 3,825 篇 材料科学与工程(可...
    • 1,858 篇 化学工程与技术
    • 1,716 篇 生物医学工程(可授...
    • 1,448 篇 机械工程
    • 1,299 篇 电子科学与技术(可...
    • 1,125 篇 计算机科学与技术...
    • 835 篇 动力工程及工程热...
    • 730 篇 仪器科学与技术
    • 636 篇 地质资源与地质工...
    • 623 篇 电气工程
    • 595 篇 交通运输工程
    • 583 篇 软件工程
    • 578 篇 力学(可授工学、理...
  • 14,195 篇 医学
    • 11,792 篇 临床医学
    • 1,837 篇 医学技术(可授医学...
    • 1,209 篇 基础医学(可授医学...
    • 1,057 篇 中西医结合
    • 878 篇 公共卫生与预防医...
    • 587 篇 药学(可授医学、理...
  • 7,869 篇 理学
    • 1,618 篇 物理学
    • 1,396 篇 化学
    • 1,200 篇 数学
    • 1,077 篇 生物学
    • 705 篇 地质学
  • 3,531 篇 农学
    • 953 篇 作物学
    • 731 篇 畜牧学
    • 573 篇 农业资源与环境
  • 1,628 篇 管理学
    • 768 篇 管理科学与工程(可...
  • 1,015 篇 经济学
    • 913 篇 应用经济学
  • 855 篇 教育学
    • 663 篇 教育学
  • 552 篇 文学
  • 536 篇 法学
  • 231 篇 艺术学
  • 205 篇 历史学
  • 192 篇 哲学
  • 73 篇 军事学

主题

  • 344 篇 ct
  • 262 篇 mri
  • 224 篇 患者
  • 170 篇 美国
  • 158 篇 病人
  • 148 篇 mr
  • 129 篇 analysis
  • 128 篇 of
  • 106 篇 and
  • 101 篇 日本
  • 101 篇 印度
  • 100 篇 covid-19
  • 79 篇 cancer
  • 77 篇 temperature
  • 62 篇 acid
  • 60 篇 structure
  • 58 篇 performance
  • 54 篇 pet
  • 52 篇 北美洲
  • 50 篇 疾病

机构

  • 151 篇 香港理工大学
  • 111 篇 香港城市大学
  • 71 篇 university of mi...
  • 67 篇 institute for pa...
  • 67 篇 albert einstein ...
  • 67 篇 dipartimento di ...
  • 67 篇 nikhef p.o.box 4...
  • 67 篇 fysikum stockhol...
  • 67 篇 michigan state u...
  • 66 篇 tifr homi bhabha...
  • 65 篇 institut fur the...
  • 65 篇 dept.of physics ...
  • 63 篇 rudolf peierls c...
  • 62 篇 department of ph...
  • 61 篇 nstitucio catala...
  • 61 篇 cern european or...
  • 61 篇 department of ph...
  • 60 篇 max-planck-insti...
  • 59 篇 school of physic...
  • 58 篇 department of ph...

作者

  • 234 篇 m.k
  • 85 篇 f.krauss
  • 85 篇 g.weiglein
  • 85 篇 h.murayama
  • 85 篇 j.parsons
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 r.s.chivukula
  • 84 篇 y.kwon
  • 84 篇 m.white
  • 84 篇 叶鹏
  • 82 篇 m.drees
  • 71 篇 s.blusk
  • 61 篇 k.monig
  • 56 篇 郭战宏
  • 46 篇 p.de jong
  • 41 篇 o.dahl
  • 39 篇 刘凯
  • 38 篇 李开
  • 38 篇 b.foster

语言

  • 28,041 篇 中文
  • 17,305 篇 英文
  • 2 篇 日文
  • 1 篇 法文
检索条件"作者=k.Agashe"
45367 条 记 录,以下是4961-4970 订阅
排序:
Non-contact measurement and multi-objective analysis of drilling temperature when drilling B_4C reinforced aluminum composites
收藏 引用
Transactions of Nonferrous Metals Society of China 2015年 第1期25卷 271-283页
作者: A.TASkESEN k.kUTUkDE Industrial Design Engineering Gazi University Institute of Science and Technology Gazi University
Non-contact measurements of machining temperatures were performed with optical pyrometer when drilling particle(B4C) reinforced metal matrix composites(MMCs) with different drills. The effect of particle content, ... 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
Magnetic Configuration Effects on Fast Ion Losses Induced by Fast Ion Driven Toroidal Alfvén Eigenmodes in the Large Helical Device
收藏 引用
Plasma Science and Technology 2012年 第4期14卷 269-272页
作者: k.OGAWA M.ISOBE k.TOI F.WATANABE D.A.SPONG A.SHIMIZU M.OSAkABE D.S.DARROW S.OHDACHI S.SAkAkIBARA LHD Experiment Group Department of Energy Science and Engineering Nagoya University National Institute for Fusion Science Graduate School of Energy Science Kyoto University Oak Ridge National Laboratory Oak Ridge Princeton Plasma Physics Laboratory Princeton University
Beam-ion losses induced by fast-ion-driven toroidal Alfven eigenmodes (TAE) were measured with a scintillator-based lost fast-ion probe (SLIP) in the large helical device (LHD). The SLIP gave simultaneously 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
Ultrahigh quantum efficiency photodetector and ultrafast reversible surface wettability transition of square In2O3 nanowires
收藏 引用
Nano Research 2017年 第8期10卷 2772-2781页
作者: Ming Meng Xinglong Wu Xiaoli Ji Zhixing Gan Lizhe Liu Jiancang Shen Paul k. Chu School of Physics and Telecommunication Engineering Zhoukou Normal University Zhoukou 466001 China key Laboratory of Modern Acoustics MOE Institute of Acoustics Collaborative Innovation Center of Advanced Microstructures Notional Laboratory of Solid State Microstructures Nanjing University Nonjing 210093 China School of Electronic Science and Engineering Nanjing University Nanjing 210093 China key Laboratory of Optoelectronic Technology of Jiangsu Province School of Physical Science and Technology Nanjing Normal University Nanjing 210023 China Department of Physics and Materials Science City University ofHong Kong Tat Chee Avenue Kowloon Hong Kong China
Due to a large surface-to-volume ratio, the optoelectronic performance of low- dimensional semiconductor nanostructure-based photodetectors depends in principle on chemisorption/photodesorption at the exposed surface,... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Suppression of vortex-induced vibrations of a flexible riser by adding helical strakes
收藏 引用
Journal of Hydrodynamics 2019年 第3期31卷 622-631页
作者: Dong-yang Chen Laith k. Abbas Guo-ping Wang Xiao-ting Rui Wei-jie Lu School of Hydraulic Energy and Power Engineering Yangzhou University Yangzhou 225127 China Institute of La unch Dynamics Nanjing University of Science and Technology Nanjing 210094 China Nanjing Aerosun Corporation Nanjing 210000 China
3-D computational fluid dynamics/ computational structure dynamics (CFD/CSD) numerical two-way coupling simulations are conducted for a flexible rise in order to study the dynamic response performance of the riser wit... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Effect of strain rate and temperature on the serration behavior of SA508-Ⅲ RPV steel in the dynamic strain aging process
收藏 引用
Journal of Iron and Steel Research International 2018年 第7期25卷 767-775页
作者: Xue Bai Su-jun Wu Li-jun Wei Shuai Luo Xie Xie Peter k. Liaw School of Materials Science and Engineering Beihang University Beijing 100191 China Department of Materials Science and Engineering The University of Tennessee Knoxville TN 37996 USA Beijing key Laboratory of Advanced Nuclear Materials and Physics Beihang University Beijing 100191 China
Dynamic strain aging (DSA) effect on SA508-III reactor pressure vessel (RPV) steel was investigated. The SA508-III RPV steel was subjected to tension tests at different strain rates (1.1× 10-5 s-1 and 6.6× 10-5... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Thermodynamic description of the ternary compounds in the Cu-In-Se system
收藏 引用
Rare Metals 2006年 第5期25卷 481-487页
作者: SHEN Jianyun W.k. kim SHANG Shunli CHU Maoyou CAO Song T.J. Anderson Department of Chemical Engineering University of Florida Gainesville FL 32611 USA General Research Institute for Non-ferrous Metals of Beijing 100088 Beijing China
A set of thermodynamic descriptions of the temary compounds (mainly α-CulnSe2, δ-CulnSe2, Culn3Se5 and CulnsSe8) in the Cu-In-Se system was established by adopting sub-lattice model. The model parameters are caref... 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
Performance of magnetorheological elastomer based torsional vibration isolation system for dynamic loading conditions
收藏 引用
Journal of Central South University 2020年 第1期27卷 144-154页
作者: PRAVEEN Shenoy k kUCHIBHATLA Sai Aditya Raman SINGH Abhishek kumar GANGADHARAN k V Department of Mechanical Engineering National Institute of Technology KarnatakaSurathkalMangalore-575025India Centre for System Design National Institute of Technology KarnatakaSurathkalMangalore-575025India
Vibration isolation is an effective method to mitigate unwanted disturbances arising from dynamic loading conditions. With smart materials as suitable substitutes, the conventional passive isolators have attained attr... 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
Length-based separation of Bacillus subtilis bacterial populations by viscoelastic microfluidics
收藏 引用
Microsystems & Nanoengineering 2022年 第1期8卷 149-159页
作者: Ping Liu Hangrui Liu Lucie Semenec Dan Yuan Sheng Yan Amy k.Cain Ming Li Suqian University Suqian 223800China School of Engineering Macquarie UniversitySydneyNSW 2109Australia Department of Physics and Astronomy Macquarie UniversitySydneyNSW 2109Australia ARC Centre of Excellence in Synthetic Biology Department of Molecular ScienceMacquarie UniversitySydneyNSW 2109Australia Centre for Regional and Rural Futures Deakin UniversityGeelongVIC 3216Australia Institute for Advanced Study Shenzhen UniversityShenzhen 518060China Biomolecular Discovery Research Centre Macquarie UniversitySydneyNSW 2109Australia
In this study,we demonstrated the label-free continuous separation and enrichment of Bacillus subtilis populations based on length using viscoelastic ***,a gram-positive,rod-shaped bacterium,has been widely used as a ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
大涡模拟建筑物对近源大气污染物扩散的影响
收藏 引用
应用力学学报 2007年 第2期24卷 284-288页
作者: 汪新 k.F.McNamara 广东工业大学 广州510006 爱尔兰国立大学土木工程系
采用大涡模拟(LES)方法对一个由上风低源排放的烟流在孤立建筑物周围扩散的现象进行了数值模拟。模拟中,离散网格的尺度控制在100倍kolmogorov湍流尺度的量级以内,亚格子应力由Smagorinsky模型加以模拟,并采用了随机数方法生成符合指定... 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
Mobile Alert and Warning in the United States and Japan:Confronting the Challenges of International Harmonization
收藏 引用
International Journal of Disaster Risk Science 2021年 第6期12卷 928-934页
作者: Hamilton Bean Ana Maria Cruz Mika Shimizu keri k.Stephens Matthew McGlone Sharon Strover Department of Communication University of ColoradoDenver.CO 80204USA Disaster Prevention Research Institute(DPRI).kyoto University Kyoto 611-0011Japan Graduate School of Advanced Integrated Studies in Human Survivability Kyoto UniversityKyoto 606-8501Japan Department of Communication Studies The University of Texas at AustinAustinTX 78712USA School of Journalism and Media The University of Texas at AustinAustinTX 78712USA
A U.S.-Japan expert workshop on mobile alert and warning was held online 8–10 September *** by the Japan Foundation’s Center for Global Partnership(CGP)and responding to the Sendai Framework for Disaster Risk Reduct... 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