咨询与建议

限定检索结果

文献类型

  • 29,416 篇 期刊文献
  • 549 篇 会议
  • 443 册 图书
  • 8 篇 学位论文
  • 3 篇 报纸

馆藏范围

  • 30,328 篇 电子文献
  • 103 种 纸本馆藏

日期分布

学科分类号

  • 12,580 篇 医学
    • 9,508 篇 临床医学
    • 1,687 篇 医学技术(可授医学...
    • 1,098 篇 基础医学(可授医学...
    • 1,091 篇 中西医结合
    • 861 篇 公共卫生与预防医...
    • 661 篇 药学(可授医学、理...
    • 614 篇 护理学(可授医学、...
  • 9,598 篇 工学
    • 1,607 篇 材料科学与工程(可...
    • 1,528 篇 生物医学工程(可授...
    • 1,181 篇 化学工程与技术
    • 667 篇 计算机科学与技术...
    • 636 篇 电子科学与技术(可...
    • 555 篇 机械工程
    • 444 篇 仪器科学与技术
    • 398 篇 软件工程
    • 390 篇 环境科学与工程(可...
  • 5,465 篇 理学
    • 982 篇 物理学
    • 936 篇 生物学
    • 924 篇 数学
    • 859 篇 化学
    • 428 篇 地质学
    • 422 篇 生态学
  • 2,506 篇 农学
    • 571 篇 作物学
    • 553 篇 农业资源与环境
    • 443 篇 畜牧学
  • 1,658 篇 教育学
    • 946 篇 体育学
    • 609 篇 教育学
  • 1,613 篇 管理学
    • 647 篇 管理科学与工程(可...
    • 535 篇 公共管理
  • 906 篇 经济学
    • 776 篇 应用经济学
  • 609 篇 文学
  • 599 篇 法学
  • 179 篇 历史学
  • 168 篇 哲学
  • 147 篇 艺术学
  • 47 篇 军事学

主题

  • 218 篇 ct
  • 178 篇 mri
  • 117 篇 患者
  • 86 篇 cancer
  • 74 篇 analysis
  • 73 篇 covid-19
  • 70 篇 武术
  • 69 篇 mr
  • 67 篇 儿童
  • 65 篇 of
  • 57 篇 temperature
  • 49 篇 rare earths
  • 46 篇 structure
  • 46 篇 中国
  • 45 篇 并发症
  • 44 篇 高血压
  • 44 篇 病人
  • 44 篇 and
  • 40 篇 health
  • 39 篇 modeling

机构

  • 110 篇 西安交通大学
  • 78 篇 东南大学
  • 67 篇 institute for pa...
  • 67 篇 california insti...
  • 67 篇 department of ph...
  • 67 篇 department of ph...
  • 67 篇 department of ph...
  • 67 篇 desy d-15735 zeu...
  • 67 篇 georg-august-uni...
  • 67 篇 bartol research ...
  • 67 篇 kavli institute ...
  • 67 篇 department of ph...
  • 67 篇 kek high energy ...
  • 67 篇 niels bohr insti...
  • 67 篇 dept.of physics ...
  • 67 篇 nikhef p.o.box 4...
  • 67 篇 ific-instituto d...
  • 67 篇 prisma cluster o...
  • 66 篇 max-planck-insti...
  • 66 篇 department of ph...

作者

  • 84 篇 f.krauss
  • 84 篇 g.weiglein
  • 84 篇 h.murayama
  • 84 篇 j.parsons
  • 84 篇 j.d.jackson
  • 84 篇 g.d'ambrosio
  • 84 篇 r.s.chivukula
  • 84 篇 y.kwon
  • 84 篇 m.white
  • 83 篇 m.drees
  • 76 篇 s.blusk
  • 72 篇 p.de jong
  • 70 篇 o.dahl
  • 68 篇 b.foster
  • 66 篇 k.monig
  • 57 篇 g.rybka
  • 51 篇 a.ringwald
  • 43 篇 mohamed s. el na...
  • 43 篇 v.i.belousov
  • 41 篇 j.beringer

语言

  • 19,629 篇 中文
  • 10,787 篇 英文
  • 2 篇 其他
检索条件"作者=S.Beth.e"
30419 条 记 录,以下是91-100 订阅
THe HADAMARD INeQUALITY FOR CONVeX FUNCTION VIA FRACTIONAL INTeGRALs
收藏 引用
Acta Mathematica scientia 2013年 第5期33卷 1293-1299页
作者: M.e.ZDeMR s.s.DRAGOMIR C.YILDIZ Department of Mathematics K.K.Education Faculty Atatürk University school of engineering & science Victoria University
In this paper, we establish several inequalities for some differantiable mappings that are connected with the Riemann-Liouville fractional integrals. The analysis used in the proofs is fairly elementary.
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
Nonlinear Optical Rectification, second and Third Harmonic Generations in square-step and Graded-step Quantum Wells under Intense Laser Field
收藏 引用
Chinese Physics Letters 2019年 第6期36卷 93-97页
作者: O.Ozturk e.Ozturk s.elagoz Department of Nanotechnology engineering Cumhuriyet University Department of Physics Cumhuriyet University AseLsAN-Microelectronics Guidance & Electro-Optics
For square-step quantum wells(ssQWs) and graded-step quantum wells(GsQWs), the nonlinear optical rectification(NOR), second harmonic generation(sHG) and third harmonic generation(THG) coefficients under an intense las... 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
Characteristic evaluation on spray-deposited WFTO thin films as a function of W doping ratio
收藏 引用
Rare Metals 2014年 第4期33卷 433-441页
作者: G.Turgut e.F.Keskenler s.Aydin D.Tatar e.sonmez s.Dogan B.Duzgun Department of Physics education Kazim Karabekir Education FacultyAtatürk University Department of Nanotechnology Faculty of EngineeringRecep Tayyip Erdogan University Department of electrical and electronics engineering Faculty of Engineering and ArchitectureBalikesir University
Abstract In this work, F and F + W simultaneously doped snO2 highly transparent conducting thin films were depos- ited on glass substrates at (500 4± 5) ℃ temperature by the spray pyrolysis method. Microstructura... 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
Understanding the mechanisms of friction stir welding based on computer simulation using particles
收藏 引用
Defence Technology(防务技术) 2018年 第6期14卷 643-656页
作者: A.Yu.smolin e.V.shilko s.V.Astafurov e.A.Kolubaev G.M.eremina s.G.Psakhie Institute of strength Physics and Materials science sB RAs Tomsk634055Russia Tomsk state University Tomsk634050Russia skolkovo Institute of science and Technology Skolkovo143025Russia
Friction stir welding(FsW) is a novel technique for joining different materials without melting. In FsW the welded components are joined by stirring the plasticized material of the welded edges with a special rotating... 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
Formation of Co-implanted silicon Ultra-shallow Junctions for Low Thermal Budget Applications
收藏 引用
Chinese Physics Letters 2013年 第1期30卷 127-129页
作者: Rehana Mustafa s.Ahmed e.U.Khan Department of Physics International Islamic UniversityIslamabadPakistan Advanced electronics Laboratory Faculty of Engineering&TechnologyInternational Islamic University IslamabadPakistan Center for emerging sciences Engineering and TechnologyIslamabadPakistan Department of Physics Gomal UniversityD.I.KhanPakistan
We present a systematic study to create ultra-shallow junctions in n-type silicon substrates and investigate both pre-and post-annealing processes to create a processing strategy for potential applications in *** wafe... 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
sortilins in the blood-brain barrier:impact on barrier integrity
收藏 引用
Neural Regeneration Research 2023年 第3期18卷 549-550页
作者: Andrea e.Toth Morten s.Nielsen Department of Biomedicine Faculty of HealthAarhus UniversityAarhusDenmark
sortilin was discovered in 1997 by Petersen and his *** single transmembrane receptor was isolated as a 95 kDa membrane glycoprotein by receptor-associated protein affinity chromatography and therefore initially named... 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
Mode filtering based on ponderomotive force nonlinearity in a plasma filled rectangular waveguide
收藏 引用
Plasma science and Technology 2017年 第10期19卷 70-74页
作者: H sOBHANI H R sABOUHI s FeILI e DADAR Young Researchers and elite Club Qom Branch Islamic Azad University Department of electrical engineering Hormoz Branch Islamic Azad University Department of Physics Shahid Bahonar University Faculty of economic Mofid University
Here a new scheme for mode filtering is proposed. Based on the ponderomotive force effect,propagation of the microwave dual-mode through a plasma-filled metallic rectangular waveguide is investigated. To excite the Te... 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
exact solutions of the Dirac equation with Pschl-Teller double-ring-shaped Coulomb potential via the Nikiforov-Uvarov method
收藏 引用
Chinese Physics B 2013年 第3期22卷 117-121页
作者: e.Maghsoodi H.Hassanabadi s.Zarrinkamar Physics Department Shahrood University of TechnologyShahroodIran Department of Basic sciences Garmsar BranchIslamic Azad UniversityGarmsarIran
exact analytical solutions of the Dirac equation are reported for the Poschl-Teller double-ring-shaped Coulomb *** radial,polar,and azimuthal parts of the Dirac equation are solved using the Nikiforov-Uvarov method,an... 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
solving Fractional Integro-Differential equations by Using sumudu Transform Method and Hermite spectral Collocation Method
收藏 引用
Computers, Materials & Continua 2018年 第2期54卷 161-180页
作者: Y.A.Amer A.M.s.Mahdy e.s.M.Youssef Department of Mathematics Faculty of Science44519Zagazig UniversityEgypt Department of Mathematics and statistics Faculty of ScienceTaif UniversitySaudi Arabia
In this paper we are looking forward to finding the approximate analytical solutions for fractional integro-differential equations by using sumudu transform method and Hermite spectral collocation *** fractional deriv... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
experimental study about the influence of adhesive stiffness to the bonding strengths of adhesives for ceramic/metal targets
收藏 引用
Defence Technology(防务技术) 2016年 第2期12卷 188-200页
作者: W.seIFeRT e.sTRAssBURGeR s.GReFeN s.sCHAARe Fraunhofer-Institute for High-speed Dynamics Ernst-Mach-Institute(EMI)Am Christianswuhr 279400 KandernGermany Rheinmetall Ballistic Protection GmbH Neuer Weg 2447803 KrefeldGermany
The aim of the investigations presented here was to understand how the stiffness of the adhesive affects the failure of ceramic tiles adhered to metallic backings. The working hypothesis was that varying the adhesive ... 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