咨询与建议

限定检索结果

文献类型

  • 11,300 篇 期刊文献
  • 602 篇 会议
  • 569 册 图书
  • 14 篇 学位论文

馆藏范围

  • 12,183 篇 电子文献
  • 314 种 纸本馆藏

日期分布

学科分类号

  • 5,145 篇 医学
    • 4,392 篇 临床医学
    • 578 篇 基础医学(可授医学...
    • 474 篇 医学技术(可授医学...
    • 374 篇 公共卫生与预防医...
    • 314 篇 药学(可授医学、理...
    • 312 篇 中西医结合
  • 5,043 篇 工学
    • 1,805 篇 材料科学与工程(可...
    • 884 篇 化学工程与技术
    • 646 篇 机械工程
    • 612 篇 电子科学与技术(可...
    • 600 篇 生物医学工程(可授...
    • 593 篇 力学(可授工学、理...
    • 511 篇 电气工程
    • 437 篇 动力工程及工程热...
    • 428 篇 计算机科学与技术...
    • 423 篇 环境科学与工程(可...
    • 390 篇 地质资源与地质工...
    • 377 篇 冶金工程
    • 350 篇 核科学与技术
    • 301 篇 水利工程
    • 284 篇 仪器科学与技术
  • 4,429 篇 理学
    • 1,464 篇 物理学
    • 1,336 篇 化学
    • 970 篇 生物学
    • 642 篇 数学
    • 510 篇 天文学
    • 501 篇 地球物理学
    • 470 篇 地质学
    • 287 篇 生态学
  • 1,148 篇 农学
    • 460 篇 作物学
  • 337 篇 文学
  • 255 篇 管理学
  • 226 篇 教育学
  • 193 篇 经济学
  • 122 篇 法学
  • 74 篇 历史学
  • 48 篇 艺术学
  • 34 篇 哲学
  • 15 篇 军事学

主题

  • 63 篇 患者
  • 60 篇 analysis
  • 46 篇 acid
  • 44 篇 properties
  • 43 篇 文学
  • 41 篇 and
  • 39 篇 corrosion
  • 39 篇 dna
  • 39 篇 model
  • 37 篇 diabetes
  • 37 篇 of
  • 36 篇 mri
  • 35 篇 liver
  • 34 篇 magnetic
  • 28 篇 performance
  • 28 篇 plasma
  • 28 篇 high
  • 28 篇 antioxidant
  • 28 篇 adsorption
  • 27 篇 children

机构

  • 68 篇 university of mi...
  • 68 篇 department of ph...
  • 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...
  • 67 篇 dept.of physics ...
  • 67 篇 compas group ins...
  • 67 篇 rudolf peierls c...
  • 67 篇 nstitucio catala...
  • 67 篇 school of physic...
  • 67 篇 ludwig-maximilia...
  • 67 篇 cea/saclay dsm/i...
  • 67 篇 department of ph...
  • 67 篇 department of ph...
  • 66 篇 national researc...
  • 66 篇 kobayashi-maskaw...
  • 66 篇 high energy phys...
  • 66 篇 department of ph...

作者

  • 89 篇 v.i.belousov
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 m.white
  • 85 篇 p.de jong
  • 84 篇 v.burkert
  • 81 篇 y.hayato
  • 81 篇 a.v.gritsan
  • 80 篇 a.gurtu
  • 80 篇 m.carena
  • 80 篇 a.masoni
  • 77 篇 s.rolli
  • 77 篇 s.r.klein
  • 76 篇 a.d.martin
  • 76 篇 b.heltsley
  • 76 篇 d.h.weinberg
  • 76 篇 u.f.katz
  • 76 篇 m.titov
  • 72 篇 j.matthews

语言

  • 7,439 篇 英文
  • 5,045 篇 中文
检索条件"作者=O.I.m.ll"
12485 条 记 录,以下是4991-5000 订阅
排序:
光学相干断层扫描研究特发性黄斑裂孔的裂孔形状对术后视力结果的预测
收藏 引用
世界核心医学期刊文摘(眼科学分册) 2005年 第3期1卷 16-17页
作者: Kusuhara S. Teraoka Escao m.F. Fujii S. 张少娟 Department of organ Therapeutics Division of Ophthalmology Kobe Univ. Grad. School of Medicine Kobe Japan Dr
Purpose To evaluate whether an index based on hole configuration can be used t o predict visual outcome in eyes with idiopathic macular holes. Design Prospecti ve interventional case series. methods Thirty five eyes 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
in Search of the Cretaceous-Tertiary Boundary in Heilongjiang River Area of China
收藏 引用
Global Geology 2002年 第2期7卷 105-113页
作者: Sun G. m.Akhmetiev Dong Z.m. A.R.Ashraf Sun Y.W. E.Bugdaeva D.L.Dilcher L.Golovneva i.Harding K.Johnson T.Kezina T.Kodrul LU J.S. V.markevich H.Nishida H.okada Park S.o. Sun C.L. Xiong X.Z. Xing Y.L. Zhou Z.L. Research Center of Paleontology&Stratigraphy Jilin UniversityChangchun130026China Geological institute of Russian Academy of Sciences(RAS) Moscow109017Russia institute of Geology&Paleontology Tuebingen UniversityTuebingenD-72076Germany institute of Biology&Pedology FEBRASVladivostok690022Russia Florida museum of Natural History University of FloridaGainesville FL32611-7800USA Botanical institute of RAS St.-Petersburg197376Russia School of ocean&Geosciences University of SouthamptonSouthamptonSO143ZH UK Denver museum of Nature&Sciences Denver CO80205USA Amur Research integrated institute FEBRASBlagoveschesk675000Russia Chuo University Tokyo112-8551Japan oyo Corporation Fukuoka811-1302Japan Dept.of Geology Kyungpook National UniversityDaegu702-201Korea Geological museum of Heilongjiang Harbin150036China
A new geological section recognized in Baishantou of Jiayin,Heilongjiang Province,China,was studied preliminarily in searching for the K/T *** early Paleocene florule characrerized by abundant Tiliaephyllum tsagajanic... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
on ideal convergence of double sequences in 2-fuzzy n-normed linear space
收藏 引用
Applied mathematics(A Journal of Chinese Universities) 2022年 第2期37卷 177-186页
作者: Vakeel A.Khan Sameera A.A.Abdullah Kamal m.A.S.Alshlool Umme Tuba Nazneen Khan Department of mathematics Aligarh Muslim UniversityAligarh 202002India Department of mathematics Sultan Qaboos UniversityMuscatOman
The purpose of this paper is to define the notions of convergence, Cauchy st–convergence, st–Cauchy, i –convergence and i –Cauchy for double sequences in 2–fuzzy n–normed spaces with respect to α–n–norms and ... 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
mutation Status of KRAS, BRAF, PiK3CA and Expression Level of AREG and EREG identify Responders to Cetuximab in a Large Panel of Patient Derived Colorectal Carcinoma Xenografts of All Four UiCC Stages
收藏 引用
Journal of Cancer Therapy 2013年 第2期4卷 678-693页
作者: Paulina Pechanska m.Becker T.mayr B.Hinzmann H.-P.Adams i.Klaman K.-H.Kretschmar K.Kretschmar K.Stecker R.mantke R.Pauli J.Pertschy K.Hertel K.Ridwelski K.Hellwig m.Pross C.Radke i.Fichtner J.Hoffmann A.Rosenthal Signature Diagnostics AG PotsdamGermany Experimental Pharmacology&oncology Berlin-Buch GmbH BerlinGermany Stadtisches Klinikum Brandenburg GmbH Klinik fur Allgemein-und ViszeralchirurgieInstitut fur PathologieBrandenburg an der HavelGermany Katholisches Krankenhaus St.Johann Nepomuk Klinik fur Allgemeine ChirurgieErfurtGermany HELioS Klinikum Erfurt Institut fur PathologieErfurtGermany Klinikum magdeburg Klinik für Allgemein-und ViszeralchirurgieInstitut fur PathologieMagdeburgGermany DRK Kliniken Berlin-Kopenik Klinik fur ChirurgieInstitut fur PathologieBerlinGermany max Delbruck Center fur molekulare medizin(mDC) Experimentale PharmakologieBerlinGermany.
To advance preclinical testing of novel targeted drugs in colorectal cancer (CRC) we established a panel of 133 mouse xenograft models from fresh tumor specimens of 239 patients with CRC of all four UiCC stages. A sub... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Limits on rough-particle sizing with low-defocus interferometric imaging
收藏 引用
Particuology 2015年 第5期13卷 52-58页
作者: m.Brunel L.ouldarbi H.Shen G.Grehan S.Cetmellec Dpartement optique et Lasers CORIA-UMR CNRS 6614Universite de RouenAvenue de I'UniversiteBP 12F-76801 Saint-Etienne du Rouvray Cedex.France
We present a rigorous theoretical model for the influence of the aperture in interferometric out-of-focus imaging. We investigate the role of this effect on the properties of speckle-like patterns generated by irregul... 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
Synthesis of α-mo_2C by Carburization of α-moo_3 Nanowires and its Electrocatalytic Activity towards Tri-iodide Reduction for Dye-Sensitized Solar Cells
收藏 引用
Journal of materials Science & Technology 2016年 第12期32卷 1339-1344页
作者: J.Theerthagiri R.A.Senthil m.H.Buraidah J.madhavan A.K.Arof Solar Energy Lab Department of ChemistryThiruvalluvar University Centre for ionics University of malaya Department of PhysicsUniversity of Malaya
Nanowire-shaped α-mo o3 was synthesized on a large scale by hydrothermal *** α-mo2 C phase was obtained by the carburization of α-mo o3 nanowires with urea as a carbon source *** phase purity and crystalline size 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
Numerical modeling of adhesion and adhesive failure during unidirectional contact between metallic surfaces
收藏 引用
Friction 2016年 第3期4卷 217-227页
作者: Eleir m.BoRToLETo Erika F.PRADoS Vanessa SERiACoPi Newton K.FUKUmASU Luiz G.D.B.da S.LimA izabel F.mACHADo Roberto m.SoUZA Surface Phenomena Laboratory Department of Mechanical Engineering Polytechnic School of the University of S(a)o Paulo Av.Prof.Mello Moraes 2231 S(a)o Paulo 05508-900 Brazil Federal University of ABC-UFABC Santo André 09210-170 Brazil
in this work, we developed a finite element modeling approach to study adhesion during unidirectional contact between a two-dimensional plane-strain square and a flat slab. The surfaces were metallic or ceramic, and w... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Current Transport in Copper Schottky Contacts to a−Plane/ c−Plane n-Type moSe_(2)
收藏 引用
Chinese Physics Letters 2011年 第8期28卷 254-257页
作者: C.K.Sumesh K.D.Patel V.m.Pathak R.Srivastav Department of Physics Faculty of Technology and EngineeringCharotar University of Science and TechnologyCHANGA 388421GujaratIndia Department of Physics Sardar Patel UniversityVallabh Vidyanagar 388120GujatatIndia
We identically prepared Cu-nmoSe_(2)(a−plane)and Cu-nmoSe_(2)(c−plane)Schottky barrier diodes(SBDs)on the same n-type moSe_(2) single *** effective Schottky barrier heights(SBHs)and ideality factors were obtained from... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
低和极低营养水平休药期日粮中添加维吉尼亚霉素对肉鸡生产和加工性能的影响
低和极低营养水平休药期日粮中添加维吉尼亚霉素对肉鸡生产和加工...
收藏 引用
2010山东饲料科学技术交流大会
作者: H.m.Cervantes K.W.Bafundo G.m.Pesti R.i.Bakalli
为了阐明在肉鸡休药期日粮中添加维吉尼亚霉素的节省营养作用和降低费用提高效益做了两个试验。在试验1中,对Ross x Cobb肉鸡饲喂相同的雏鸡和中大鸡日粮。第30天,转为休药期日粮至第49天试验结束。处理设计如下:1)标准肉鸡休药期日粮(... 详细信息
来源: cnki会议 评论
Hospitalizations for osteoporosis-Related Fractures: Analysis from Eastern Saudi Arabia
收藏 引用
open Journal of orthopedics 2020年 第6期10卷 117-123页
作者: mir Sadat-Ali AbdulAziz H. Al-Shams Zainab R. Al Ghanim Khaleel i. Al Batran Yousef m. Al Jamaan Abrar S. Hashishi Faisal m. Al Anaz Abdul Raheem A. Al Talib Fatima Abdulmohsen mohamed The Department of orthopaedic Surgery King Fahd Hospital of the University Imam Abdul Rahman Bin Faisal University Al Khobar KSA
Background and objectives: osteoporosis causes fragility fractures which increase the morbidity and mortality in the elderly. our objective was to look at the hospital admissions due to fragility fractures and site of... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论