咨询与建议

限定检索结果

文献类型

  • 111,350 篇 期刊文献
  • 6,759 篇 会议
  • 5,334 册 图书
  • 118 篇 学位论文
  • 30 篇 报纸

馆藏范围

  • 121,298 篇 电子文献
  • 2,396 种 纸本馆藏

日期分布

学科分类号

  • 51,756 篇 工学
    • 13,702 篇 材料科学与工程(可...
    • 7,566 篇 化学工程与技术
    • 6,459 篇 机械工程
    • 5,140 篇 生物医学工程(可授...
    • 4,654 篇 电子科学与技术(可...
    • 4,648 篇 计算机科学与技术...
    • 4,058 篇 动力工程及工程热...
    • 3,989 篇 电气工程
    • 3,940 篇 力学(可授工学、理...
    • 3,416 篇 冶金工程
    • 3,303 篇 地质资源与地质工...
    • 3,039 篇 环境科学与工程(可...
    • 2,902 篇 水利工程
    • 2,800 篇 控制科学与工程
    • 2,592 篇 建筑学
  • 39,362 篇 医学
    • 31,726 篇 临床医学
    • 4,816 篇 基础医学(可授医学...
    • 4,655 篇 医学技术(可授医学...
    • 3,497 篇 公共卫生与预防医...
    • 3,162 篇 中西医结合
    • 2,676 篇 药学(可授医学、理...
  • 30,994 篇 理学
    • 9,160 篇 化学
    • 8,667 篇 物理学
    • 6,605 篇 生物学
    • 4,486 篇 数学
    • 3,157 篇 地质学
    • 2,978 篇 地球物理学
    • 2,638 篇 天文学
  • 11,005 篇 农学
    • 3,417 篇 作物学
  • 5,527 篇 管理学
  • 3,568 篇 教育学
  • 3,236 篇 经济学
    • 2,844 篇 应用经济学
  • 2,363 篇 法学
  • 2,117 篇 文学
  • 939 篇 艺术学
  • 917 篇 历史学
  • 740 篇 哲学
  • 205 篇 军事学

主题

  • 960 篇 ct
  • 695 篇 mri
  • 691 篇 美国
  • 498 篇 患者
  • 492 篇 病人
  • 469 篇 of
  • 386 篇 mr
  • 345 篇 and
  • 282 篇 北美洲
  • 278 篇 治疗
  • 274 篇 cancer
  • 234 篇 美利坚合众国
  • 225 篇 中国
  • 212 篇 应用
  • 201 篇 设计
  • 201 篇 诊断
  • 197 篇 儿童
  • 183 篇 analysis
  • 178 篇 microstructure
  • 167 篇 产量

机构

  • 305 篇 北京大学
  • 273 篇 同济医科大学附属...
  • 231 篇 香港理工大学
  • 194 篇 清华大学
  • 170 篇 浙江大学
  • 135 篇 中国科学院大学
  • 117 篇 香港城市大学
  • 117 篇 南京大学
  • 117 篇 天津大学
  • 111 篇 上海交通大学
  • 106 篇 内蒙古师范大学
  • 106 篇 内蒙古农业大学
  • 105 篇 东南大学
  • 104 篇 中山大学
  • 102 篇 香港大学
  • 97 篇 内蒙古民族大学
  • 88 篇 华中科技大学
  • 84 篇 germany
  • 78 篇 中国地质大学
  • 77 篇 华南理工大学

作者

  • 255 篇 叶鹏
  • 232 篇 m.k
  • 162 篇 李飒
  • 142 篇 高娃
  • 122 篇 肖洒
  • 112 篇 刘莉
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 82 篇 m.white
  • 81 篇 王飒
  • 81 篇 郭俊
  • 67 篇 china
  • 65 篇 萨日娜
  • 62 篇 朱国栋
  • 60 篇 刘飒
  • 58 篇 徐月敏
  • 58 篇 唐光健
  • 56 篇 萨如拉
  • 49 篇 余英豪

语言

  • 81,030 篇 中文
  • 42,487 篇 英文
  • 29 篇 其他
  • 3 篇 日文
  • 1 篇 德文
  • 1 篇 法文
检索条件"作者=Wa.ra.h-Sa.i K."
123591 条 记 录,以下是1-10 订阅
排序:
An Adaptive Data-driven Method Based on Fuzzy Logic for Determining Power System Voltage Status
收藏 引用
Journal of Modern Power Systems and Clean Energy 2024年 第3期12卷 707-718页
作者: Sirwan Shazdeh hêmin Golpîra hassan Bevrani the SMGRC University of KurdistanSanandajIran Power Systems Modeling&Simulation Lab Department of Electrical EngineeringUniversity of KurdistanKurdistanSanandaj 66177-15175Iran
This paper proposes an adaptive method based on fuzzy logic that utilizes data from phasor measurement units(PMUs) to assess and classify generating-side voltage trajectories. The voltage variable and its associated d... 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
Mapping global research trends: Nutrition associations with nonalcoholic fatty liver disease - a Scopus bibliometric analysis
收藏 引用
World Journal of Gastroenterology 2024年 第24期30卷 3106-3119页
作者: Muna Shak.shir sa'ed h Zyoud Department of Nutrition An-Najah National University HospitalNablus 44839Palestine Department of Public health College of Medicine and Health SciencesAn-Najah National UniversityNablus 44839Palestine Department of Clinical and Community Pharmacy College of Medicine and Health SciencesAn-Najah National UniversityNablus 44839Palestine Poison Control and Drug information Center College of Medicine and Health SciencesAn-Najah National UniversityNablus 44839Palestine Clinical Research Center An-Najah National University HospitalNablus 44839Palestine
BACk.ROUND Several bibliometric analyses have been carried out to identify research hotspots and trends in nonalcoholic fatty liver disease(NAFLD)***,there are still significant k.owledge gaps that must be filled to a... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Particle Size Optimization of Thermochemical salt hydrates for high Energy Density Thermal Storage
收藏 引用
Energy & Environmental Materials 2024年 第2期7卷 326-333页
作者: Andrew Martin Drew Lilley raνi Prasher Sumanjeet k.ur Energy Technologies Area Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA Department of Mechanical Engineering UC BerkeleyBerkeleyCA 94720USA
Thermal energy storage(TES)solutions offer opportunities to reduce energy consumption,greenhouse gas emissions,and ***,they can help reduce the peak.load and address the intermittency of renewable energy sources by ti... 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
infrared Fault Detection Method for Dense Electrolytic Bath Polar Plate Based on YOLOv5s
收藏 引用
Computers, Materials and Continua 2024年 第3期80卷 4859-4874页
作者: Yu h. hang Y. Shi S. Wu k. Zhang Y. Software Engineering Department of Computer Science Changzhou University Changzhou 213146 China Electrical Engineering Department of Computer Science Changzhou University Changzhou 213146 China
Electrolysis tank. are used to smelt metals based on electrochemical principles, and the short-circuiting of the pole plates in the tank. in the production process will lead to high temperatures, thus affecting normal... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Synergic catalysis of W and Ni originating from substitution of trivacant phosphotungstate for the selective oxidation of aniline to azoxybenzene
收藏 引用
Chinese Chemical Letters 2024年 第2期35卷 558-563页
作者: Sheng Cai Xiao-Yuan Wu Weiming Wu sa-sa wang Can-Zhong Lu CAS k.y Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350117China Xiamen institute of rare Earth Materials Chinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China
Partial substitution of polyoxometalate(POM)is an efficient route to modulate the catalytic property of maternal *** this work.a new k.ggin type POM involving{Ni 6}cluster,{[Ni(h_(2) O)_(2)(Dach)_(2)][Ni(Dach)_(2)]_(2... 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
Bioinspired nanotransducers for neuromodulation
收藏 引用
Nano Research 2024年 第2期17卷 618-632页
作者: Fan Yang Xiang Wu sa Cai Guosong hong Department of Materials Science and Engineering Stanford UniversityStanfordCA 94305USA Wu Tsai Neurosciences institute Stanford UniversityStanfordCA 94305USA School of Science Shenzhen Campus of Sun Yat-sen UniversityShenzhen 518107China
The field of neuromodulation has experienced significant advancements in the past decade,owing to break.hroughs in disciplines such as materials science,genetics,bioengineering,photonics,and *** convergence of these f... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
influence of erbium on structural,and charged particles,photons,and neutrons shielding properties of Ba_(1-x)Er_(x)SnO_(3) perovsk.te ceramics
收藏 引用
Journal of rare Earths 2024年 第4期42卷 724-732页
作者: M.k.h.hamad Nidal Dwaik.t M.h.A.Mhareb M.i.sayyed R.M.hamad Y.S.M.Alajerami M.A.Almessiere Gameel saleh Ahmad hussein Alomari k.A.Ziq Department of Basic Sciences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Department of Physics College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Department of Physics College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Basic and Applied Scientific Research Center Imam Abdulrahman Bin Faisal UniversityP0.Box 1982Dammam31441Saudi Arabia Department of Physics Faculty of ScienceIsra UniversityAmman11622Jordan Department of Nuclear Medicine Research Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia Medical imaging Department Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Department of Biophysics Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Department of Biomedical Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&Minerals Regulatory Commission Amman11821Jordan
Five perovsk.te ceramics samples of Ba_(1-x)Er_(x)SnO_(3) with x=0.00,0.05,0.10,0.15,and 0.20 were synthesized using the conventional solid-state reaction *** prepared samples were characterized by X-ray diffraction(X... 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
Quaternionic Monge–Ampère Measure on Pluripolar Set
收藏 引用
Acta Mathematica Sinica,English Series 2024年 第6期40卷 1431-1457页
作者: hichame AMAL saïd ASSERDA Fadoua BOUk.ARi Department of Mathematics Laboratory LaREAMIRegional Centre of Trades of Education and TrainingKenitraMorocco ibn Tofail University Faculty of SciencesDepartment of MathematicsPO 242 KenitraMorroco
in this paper, we prove that in a hyperconvex domain Ω in h^(n), if a non-negative Borel measure is dominated by a quaternionic Monge–Ampère measure, then it is a quaternionic Monge–Ampère measure of a function i... 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
Added value of ratio of cross diameters of the appendix in ultrasound diagnosis of acute appendicitis
收藏 引用
World Journal of Gastrointestinal Surgery 2024年 第1期16卷 21-28页
作者: Feng-wa Gu Si-Ze Wu Department of Ultrasound The First Affiliated Hospital of Hainan Medical UniversityHaikou 570102Hainan ProvinceChina
BACk.ROUND The maximum outer diameter(MOD)of the appendix is an essential parameter for diagnosing acute appendicitis,but there is space for improvement in ultrasound(US)diagnostic *** To investigate whether combining... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Near resonance vibration isolation on a levered-dual response(LEDAR)Coulomb-damped system by differential preloads/offsets in linear springs
收藏 引用
Applied Mathematics and Mechanics(English Edition) 2024年 第6期45卷 1033-1050页
作者: T.i.TOLUwaLOJU C.k.ThEiN D.hALiM Department of Mechanical Materials and Manufacturing EngineeringUniversity of Nottingham Ningbo ChinaNingbo 315100Zhejiang ProvinceChina Nottingham Ningbo China Beacons of Excellence Research and innovation institute University of Nottingham Ningbo ChinaNingbo 315048Zhejiang ProvinceChina
The levered-dual response(LEDAR)Coulomb-damped system attains near resonant vibration isolation by differential preloads/offsets in linear *** tak.s the advantages of both the preloads/offsets in linear springs and th... 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