咨询与建议

限定检索结果

文献类型

  • 92,356 篇 期刊文献
  • 5,474 篇 会议
  • 4,014 册 图书
  • 146 篇 学位论文
  • 16 篇 报纸
  • 2 篇 多媒体

馆藏范围

  • 100,279 篇 电子文献
  • 1,812 种 纸本馆藏

日期分布

学科分类号

  • 37,279 篇 工学
    • 7,558 篇 材料科学与工程(可...
    • 4,449 篇 化学工程与技术
    • 3,852 篇 生物医学工程(可授...
    • 2,709 篇 电子科学与技术(可...
    • 2,551 篇 机械工程
    • 2,082 篇 计算机科学与技术...
    • 1,929 篇 动力工程及工程热...
    • 1,792 篇 地质资源与地质工...
    • 1,471 篇 电气工程
    • 1,445 篇 仪器科学与技术
    • 1,360 篇 水利工程
    • 1,328 篇 力学(可授工学、理...
    • 1,303 篇 环境科学与工程(可...
  • 35,544 篇 医学
    • 29,333 篇 临床医学
    • 4,201 篇 医学技术(可授医学...
    • 3,078 篇 基础医学(可授医学...
    • 2,624 篇 中西医结合
    • 2,092 篇 公共卫生与预防医...
    • 1,662 篇 药学(可授医学、理...
  • 18,336 篇 理学
    • 3,369 篇 化学
    • 3,338 篇 物理学
    • 2,989 篇 数学
    • 2,551 篇 生物学
    • 1,945 篇 地质学
  • 8,666 篇 农学
    • 2,101 篇 作物学
    • 1,834 篇 畜牧学
    • 1,446 篇 农业资源与环境
  • 3,633 篇 管理学
    • 1,552 篇 管理科学与工程(可...
  • 2,537 篇 经济学
    • 2,221 篇 应用经济学
  • 2,061 篇 教育学
    • 1,464 篇 教育学
  • 1,466 篇 法学
  • 1,390 篇 文学
  • 570 篇 艺术学
  • 551 篇 历史学
  • 490 篇 哲学
  • 166 篇 军事学

主题

  • 1,000 篇 ct
  • 859 篇 mri
  • 597 篇 美国
  • 542 篇 病人
  • 533 篇 患者
  • 476 篇 and
  • 466 篇 of
  • 440 篇 mr
  • 377 篇 cancer
  • 279 篇 analysis
  • 261 篇 治疗
  • 251 篇 北美洲
  • 198 篇 美利坚合众国
  • 180 篇 诊断
  • 178 篇 disease
  • 169 篇 water
  • 164 篇 儿童
  • 159 篇 microstructure
  • 154 篇 energy
  • 147 篇 应用

机构

  • 186 篇 北京大学
  • 140 篇 同济医科大学附属...
  • 111 篇 清华大学
  • 85 篇 浙江大学
  • 72 篇 华中科技大学同济...
  • 70 篇 university of ch...
  • 69 篇 华中科技大学
  • 68 篇 美国加州大学
  • 68 篇 university of mi...
  • 67 篇 institute for pa...
  • 67 篇 nikhef p.o.box 4...
  • 67 篇 fysikum stockhol...
  • 67 篇 michigan state u...
  • 67 篇 南京大学
  • 66 篇 national researc...
  • 66 篇 institut fur the...
  • 66 篇 dept.of physics ...
  • 66 篇 compas group ins...
  • 64 篇 rudolf peierls c...
  • 63 篇 香港理工大学

作者

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

语言

  • 60,948 篇 中文
  • 41,047 篇 英文
  • 2 篇 日文
  • 2 篇 其他
  • 1 篇 法文
检索条件"作者=m.S.abd el-GHAnY"
102008 条 记 录,以下是91-100 订阅
排序:
Efficiency of Bio-Fertilizing as One of the Natural Alternatives to Improve the Growth of Khaya senegalensis and swietenia mahagoni Trees and for sustainability
收藏 引用
Agricultural sciences 2024年 第2期15卷 292-310页
作者: safaa A. s. Ghorab Nashwa H. mohamed Nader A. el-shanhorey Nabal s. el-shahat Amr R. Rabie Forestry and Timber Trees Department Horticulture Research Institute Agricultural Research Center Ismailia Egypt Forestry and Timber Trees Department Horticulture Research Institute Agricultural Research Center Alexandria Egypt Botanical Gardens Department Horticulture Research Institute Agricultural Research Center Alexandria Egypt Forestry and Timber Trees Department Horticulture Research Institute Agricultural Research Center Giza Egypt
A field experiment was carried out at Ismailia Research station, Ismailia Governorate from 2020-2022 to improve the growth of Khaya senegalensis and swietenia mahagoni by using a combination of mineral fertilizer (NPK... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Cr-induced fusion reactions to synthesize superheavy elements
收藏 引用
Nuclear science and Techniques 2024年 第5期35卷 122-130页
作者: s.madhu H.C.manjunatha N.sowmya B.m.Rajesh L.seenappa R.s.susheela Department of Physics R V College of EngineeringBangalore 560074India Visvesvaraya Technological University BelagaviKarnataka 590018India Department of Physics Government First Grade CollegeSrinivasapurKarnataka 563135India Department of Physics Government First Grade CollegeDevanahallyKarnataka 562110India Department of Physics Government First Grade CollegeMulbagalKarnataka 563131India Department of Physics Government First Grade collegeNanjangudOoty RoadMysore 571301India
We investigated ^(50,52-54)Cr-induced fusion reactions for the synthesis of the superheavy element in the 104≤Z≤122 *** cross sections produced in this investigation using ^(54)Cr projectiles were compared with thos... 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
magnesium oxide(mgO)nanoadsorbents in wastewater treatment:A comprehensive review
收藏 引用
Journal of magnesium and Alloys 2024年 第5期12卷 1709-1773页
作者: H.C.s.Perera V.Gurunanthanan Anoop singh m.m.m.G.P.G.mantilaka G.Das sandeep Arya Department of Physics Khalifa UniversityAbu Dhabi12788United Arab Emirates Postgraduate Institute of science University of PeradeniyaPeradeniyaSri Lanka Department of Humanities and sciences Guru Nanak Institutions Technical CampusIbrahimpatnamHyderabad501506India Centre for Global Health Research Saveetha Medical College and HospitalsSaveetha Institute of Medical and Technical SciencesChennai602105Tamil NaduIndia Department of Physics University of JammuJammu and Kashmir180006India
Wastewater contamination by heavy metals and synthetic dyes presents a significant environmental challenge,necessitating effective and sustainable separation *** review article provides a detailed examination of magne... 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 asymptotic behavior for a binary alloy in energy and material science:The unified method and its applications
收藏 引用
Journal of Ocean Engineering and science 2024年 第4期9卷 373-378页
作者: m.Adel K.Aldwoah F.Alahmadi m.s.Osman Department of mathematics Faculty of ScienceIslamic University of MadinahMedinaSaudi Arabia Department of mathematics Faculty of ScienceCairo UniversityGiza 12613Egypt
The Cahn-Hilliard system was proposed to the first time by Chan and Hilliard in *** model(or system of equations)has intrinsic participation energy and materials sciences and depicts significant characteristics of two... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Two unrelated Alagille syndrome cases of south Indian origin:showing multi-exonic deletion and a novel mutation in JAG1 gene
收藏 引用
Genes & Diseases 2024年 第3期11卷 66-68页
作者: Aswathi N Jincy m.Jose sreelata B.Nair Prabha s.N Pappachan s Department of medical Genetics Lifeline Super Specialty HospitalPathanamthittaKerala 691523India Lifeline super specialty Hospital PathanamthittaKerala 691523India
Alagille syndrome(ALGs;OmIm#118450)is a highlyvariable,multi-systemic,autosomal dominant disorder,caused by mutations in the Jagged Canonical Notch Ligand 1(JAG1)gene(20p12.2)or in the Neurogenic locus notch homolog p... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Twinning aspects and their efficient roles in wrought mg alloys:A comprehensive review
收藏 引用
Journal of magnesium and Alloys 2024年 第6期12卷 2201-2230页
作者: s.s.A.shah manping Liu Azim Khan Farooq Ahmad m.R.abdullah Xingquan Zhang shiwei Xu Zhen Peng school of materials science and Engineering Jiangsu UniversityZhenjiang 212013China school of mechanical Engineering Anhui University of TechnologyMáanshan 243002China College of mechanical and Vehicle Engineering Hunan UniversityChangsha 410082China
Twinning is widely recognized as an effective and cost-efficient method for controlling the microstructure and properties of wrought magnesium(mg)***,twins play a crucial role in initiating dynamic recrystallization(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
An Integral method for solving Dynamic Equations with Fluid–solid Coupling
收藏 引用
Acta mechanica solida sinica 2024年 第1期37卷 99-108页
作者: Xin Zhang Jie Liu Pu Xue shuowen Yan Yahao Xu m.s.Zahran school of Aeronautics Northwestern Polytechnical UniversityXi'an 710072China school of mechatronical Engineering Beijing Institute of TechnologyBeijing 100081China Department of Civil Engineering Military Technical CollegeCairo 11435Egypt
In this work,a new methodology is presented to mainly solve the fluid–solid interaction(FsI)*** methodology combines the advantages of the Newmark precise integral method(NPIm)and the dual neural network(DNN)*** NPIm... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Tuning structural,electrical,dielectric and magnetic properties of mg-Cu-Co ferrites via dysprosium(Dy^(3+))doping
收藏 引用
Journal of Rare Earths 2024年 第1期42卷 137-146,I0005页
作者: maria Akhtar m.s.Hasan Nasir Amin N.A.morley muhammad Imran Arshad Department of Physics Government College UniversityFaisalabad38000Pakistan Department of Physics The University of Lahore53700Pakistan Department of materials science and Engineering The University of SheffieldS13JDUK Department of Physics&Astronomy University College LondonUK
In current research work,Dy3+substituted mg0.5Cu0.25Co0.25Fe2-xDyxO4(0.0≤x≤0.04 with the step interval of 0.01)soft ferrites were synthesized by the sol-gel auto combustion *** prepared samples were characterized by... 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
Regulating microstructure and composition by carbonizing in-situ grown metal-organic frameworks on cotton fabrics for boosting electromagnetic wave absorption
收藏 引用
Nano Research 2024年 第8期17卷 7290-7300页
作者: Jie Jin Hongsen Long Hu Liu Yan Guo Tiantian Bai Ben Bin Xu mohammed A.Amin Hua Qiu mohamed H.Helal Chuntai Liu Changyu shen Zeinhom m.el-Bahy Zhanhu Guo state Key Laboratory of structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China China state Key Laboratory of Powder metallurgy Central South UniversityChangsha 410000China school of electronic Engineering North China University of Water Resources and Electric PowerZhengzhou 450046China Complex Conditions of High-end Tire Technology Innovation Center Shuguang Rubber Industry Research&Design Institute Co.LtdGuilin 541004China Integrated Composites Lab Department of Mechanical and Civil EngineeringNorthumbria UniversityNewcastle Upon TyneNE18STUK Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia shaanxi Key Laboratory of macromolecular science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Chemistry Faculty of Arts and ScienceNorthern Border UniversityRafha 73213Saudi Arabia Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr City 11884CairoEgypt
High-temperature carbonized metal-organic frameworks(mOFs)derivatives have demonstrated their superiority for promising electromagnetic wave(EmW)absorbers,but they still suffer from limited EmW absorption capacity and... 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) perovskite 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 Dwaikat 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 perovskite 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