咨询与建议

限定检索结果

文献类型

  • 86,581 篇 期刊文献
  • 5,167 篇 会议
  • 3,900 册 图书
  • 140 篇 学位论文
  • 16 篇 报纸
  • 2 篇 多媒体

馆藏范围

  • 94,092 篇 电子文献
  • 1,792 种 纸本馆藏

日期分布

学科分类号

  • 34,947 篇 工学
    • 6,940 篇 材料科学与工程(可...
    • 4,039 篇 化学工程与技术
    • 3,742 篇 生物医学工程(可授...
    • 2,507 篇 电子科学与技术(可...
    • 2,416 篇 机械工程
    • 1,987 篇 计算机科学与技术...
    • 1,837 篇 动力工程及工程热...
    • 1,661 篇 地质资源与地质工...
    • 1,387 篇 电气工程
    • 1,345 篇 仪器科学与技术
    • 1,269 篇 力学(可授工学、理...
    • 1,262 篇 水利工程
    • 1,211 篇 环境科学与工程(可...
  • 33,267 篇 医学
    • 27,504 篇 临床医学
    • 4,066 篇 医学技术(可授医学...
    • 2,928 篇 基础医学(可授医学...
    • 2,433 篇 中西医结合
    • 1,990 篇 公共卫生与预防医...
    • 1,490 篇 药学(可授医学、理...
  • 16,717 篇 理学
    • 3,116 篇 物理学
    • 2,990 篇 化学
    • 2,741 篇 数学
    • 2,353 篇 生物学
    • 1,784 篇 地质学
  • 8,117 篇 农学
    • 1,981 篇 作物学
    • 1,766 篇 畜牧学
    • 1,288 篇 农业资源与环境
  • 3,521 篇 管理学
    • 1,491 篇 管理科学与工程(可...
  • 2,427 篇 经济学
    • 2,117 篇 应用经济学
  • 1,976 篇 教育学
    • 1,413 篇 教育学
  • 1,439 篇 法学
  • 1,346 篇 文学
  • 556 篇 艺术学
  • 527 篇 历史学
  • 472 篇 哲学
  • 158 篇 军事学

主题

  • 968 篇 ct
  • 845 篇 mri
  • 585 篇 美国
  • 533 篇 病人
  • 514 篇 患者
  • 432 篇 mr
  • 418 篇 and
  • 407 篇 of
  • 326 篇 cancer
  • 261 篇 analysis
  • 247 篇 北美洲
  • 226 篇 治疗
  • 194 篇 美利坚合众国
  • 164 篇 诊断
  • 163 篇 disease
  • 155 篇 儿童
  • 141 篇 water
  • 137 篇 应用
  • 129 篇 energy
  • 124 篇 acid

机构

  • 167 篇 北京大学
  • 133 篇 同济医科大学附属...
  • 100 篇 清华大学
  • 80 篇 浙江大学
  • 74 篇 university of ch...
  • 71 篇 华中科技大学同济...
  • 68 篇 university of mi...
  • 67 篇 美国加州大学
  • 67 篇 institute for pa...
  • 67 篇 nikhef p.o.box 4...
  • 67 篇 fysikum stockhol...
  • 67 篇 michigan state u...
  • 67 篇 institut fur the...
  • 66 篇 national researc...
  • 66 篇 dept.of physics ...
  • 66 篇 compas group ins...
  • 66 篇 rudolf peierls c...
  • 66 篇 南京大学
  • 65 篇 nstitucio catala...
  • 63 篇 department of ph...

作者

  • 238 篇 叶鹏
  • 232 篇 m.k
  • 113 篇 刘莉
  • 110 篇 郭俊
  • 86 篇 m.white
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 76 篇 朱国栋
  • 74 篇 唐光健
  • 56 篇 p.de jong
  • 49 篇 刘凯
  • 48 篇 王铮
  • 45 篇 余英豪
  • 41 篇 linda m.chung
  • 39 篇 崔荣
  • 39 篇 郭战宏
  • 38 篇 graul a i
  • 37 篇 y.hatsukawa
  • 36 篇 李长根

语言

  • 58,342 篇 中文
  • 37,451 篇 英文
  • 2 篇 日文
  • 2 篇 其他
  • 1 篇 法文
检索条件"作者=m.Ebn Touham."
95806 条 记 录,以下是4991-5000 订阅
排序:
Epidemiological characteristics and genetic alterations in adult diffuse glioma in East Asianpopulations
收藏 引用
Cancer Biology & medicine 2022年 第10期19卷 1440-1459页
作者: Zongchao mo Junyi Xin Ruichao Chai Peter Y.m.Woo Danny T.m.Chan Jiguang Wang Division of Life Science and State Key Laboratory of molecular Neuroscience The Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute Shenzhen 518000China Department of molecular Neuropathology Beijing Neurosurgical InstituteCapital Medical UniversityBeijing 100070China Department of Neurosurgery Kwong Wah HospitalHong Kong SARChina Hong Kong Neuro-Oncology Society Hong Kong SARChina Division of Neurosurgery Department of SurgeryPrince of Wales HospitalHong Kong SARChina Department of Chemical and Biological Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina Hong Kong Center for Neurodegenerative Diseases Hong Kong Science ParkHong Kong SARChina
Understanding the racial specificities of diseases—such as adult diffuse glioma,the most common primary malignant tumor of the central nervous system—is a critical step toward precision ***,we comprehensively review... 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 particle size distribution on magnetic behavior of nanoparticles with uniaxial anisotropy
收藏 引用
Chinese Physics B 2018年 第9期27卷 572-576页
作者: S Rizwan Ali Farah Naz Humaira Akber m Naeem S Imran Ali S Abdul Basit m Sarim Sadaf Qaseem Department of Physics Federal Urdu University of Arts Science and Technology Department of Applied Chemistry and Chemical Technology University of Karachi Department of Computer Science Federal Urdu University of Arts Science and Technology
The effect of particle size distribution on the field and temperature dependence of the hysteresis loop features like coercivity(HC), remanence(mR), and blocking temperature(TB) is simulated for an ensemble of s... 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
multi-quasiparticle excitations in ^(145)Tb
收藏 引用
Science China(Physics,mechanics & Astronomy) 2004年 第5期47卷 561-570页
作者: T. Hayakawa m. Oshima T. Toh T. Shizuma J. Katakura Y. Hatsukawa m. matsuda H. Kusakari m. Sugawara Japan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanJapan Atomic Energy Research Institute Tokai Ibaraki 319-1195 JapanChiba University Inage-ku Chiba 263-8512 JapanChiba Institute of Technology Narashino Chiba 275-0023 Japan
High-spin states in 145Tb have been populated using the 118Sn (32S, 1p4n) reaction at beam energy of 165 meV. The level scheme of 145Tb has been established up to Ex ≈7.4 meV. The level scheme shows characteristics o... 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 new design approach for the established flow region of vertical,dilute-phase pneumatic conveyors
收藏 引用
Particuology 2022年 第7期20卷 10-20页
作者: John m.Wheeldon Jan Baeyens Shuo Li Yimin Deng European Powder and Process Technology Longfellow DriveKetteringUnited Kingdom KU Leuven Department of Chemical EngineeringProcess and Environmental Technology LabJ.De Nayerlaan 52860 Sint-Katelijne-WaverBelgium Beijing University of Chemical Technology Beijing Advanced Centre of Smart Matter Science and EngineeringBeijingChina
An analysis has been completed for a comprehensive set of vertical,dilute-phase pneumatic conveying pressure drop data from an investigation by *** data were collected in the established flow region for eight differen... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Hazards and Landscape Changes(Degradations) on Hungarian Karst mountains Due to Natural and Human Effects
收藏 引用
Journal of mountain Science 2013年 第1期10卷 16-28页
作者: móga JNOS Kiss KLAUDIA Szabó mRIA Kériné Borsodi ANDREA Kéri ANDRS mari LSZLó Knáb móNIKA Iván VERONIKA Geography and Earth Science Institute Etvs Loránd University Biology Institute Etvs Loránd University
In order to study the karstological processes within the karst ecological system,the geohazards and degradation of karst landscapes on the karst areas of the Bakony mountains(Hungary),we investigated the abiotic eleme... 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
Dissipation of chlorpyrifos, pendimethalin, and thiophanate-methyl pesticides in compost based-versus peat-moss based-biomixture of biobeds
收藏 引用
Waste Disposal and Sustainable Energy 2023年 第4期5卷 461-470页
作者: Talaat N.m.El-Sebai Wafaa m.H.Zidan Alaa marzouk marion Divers Fabrice martin-Laurent Agricultural microbiology Dept.Agricultural and Biology Research Institute National Research CentreCairoEgypt Laboratory of Pesticide Analysis Agriculture Research CentreCairoEgypt Laboratory of Soil microbiology National Institute of Agricultural ResearchDijonFrance
Biobed is a smart bioremediation system used to treat point-source pesticide *** is the main component of biobeds,and pesticide dissipation is affected by its *** study aimed to compare the effectiveness of compost-ba... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
In-situ alloyed CoCrFemnNi high entropy alloy:microstructural development in laser powder bed fusion
收藏 引用
Journal of materials Science & Technology 2022年 第28期123卷 123-135页
作者: Peng Chen Xiyu Yao moataz m.Attallah ming Yan Department of materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Advanced materials Processing Laboratory University of BirminghamBirmingham B152TTUK
In-situ alloying has the potential to combine the compositional flexibility of high entropy alloys(HEAs)and the advanced forming capability of laser powder bed fusion(LPBF).This study fundamentally investigated the el... 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
Business Continuity management,Operational Resilience,and Organizational Resilience:Commonalities,Distinctions,and Synthesis
收藏 引用
International Journal of Disaster Risk Science 2023年 第5期14卷 713-721页
作者: S.E.Galaitsi Elizaveta Pinigina Jeffrey m.Keisler Gianluca Pescaroli Jesse m.Keenan Igor Linkov US Army Engineer Research and Development Center VicksburgMS39180USA College of management University of Massachusetts BostonBostonMA02125USA Institute for Risk and Disaster Reduction University College LondonLondonWC1E 6BTUK School of Architecture Tulane UniversityNew OrleansLA70118USA
The concepts of business continuity management,operational resilience,and organizational resilience each refer to actions that businesses and organizations can take in anticipating and responding to ***,the existing 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
Optimal Bandgap of Double Perovskite La-Substituted Bi2FeCrO6 for Solar Cells:an ab initio GGA+U Study
收藏 引用
Chinese Physics Letters 2017年 第1期34卷 81-85页
作者: B.merabet H.Alamri m.Djermouni A.Zaoui S.Kacimi A.Boukortt m.Bejar Electrotechnics Department Faculty of TechnologyMustapha Stambouli UniversityMascara 29000Algeria Computational materials Physics Laboratory UDL-SBA 22000Algeria Physics Department-University College Umm Ai-Qura UniversityMakkahSaudi Arabia Centre Universitaire Ahmed Zabana Relizane 48000Algeria Elaboration Characterization Physico-mechanics of materials and metallurgical Lboratory ECP3m Faculty of Sciences and TechnologyAbdelhamid Ibn Badis University of MostaganemMostaganem 27000Algeria Laboratoire de Physique Appliquee Faculte des SciencesUniversite de SfaxSfax 3000Tunisie
The ab initio generalized gradient approximation (GGA)+U study of multiferroic (La Bi )2FeCrO6 in pnma structure and ferri-magnetic order, including Hubbard corrections ( eV) for transition metal/rare earth d-electron... 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
Deformation and failure in nanomaterials via a data driven modelling approach
收藏 引用
Theoretical & Applied mechanics Letters 2020年 第4期10卷 249-252页
作者: m.Amir Siddiq School of Engineering University of AberdeenAB243UEAberdeenUK
A data driven computational model that accounts for more than two material states has been presented in this work. Presented model can account for multiple state variables, such as stresses,strains, strain rates and f... 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