咨询与建议

限定检索结果

文献类型

  • 77,428 篇 期刊文献
  • 5,264 册 图书
  • 5,222 篇 会议
  • 35 篇 学位论文
  • 19 篇 报纸

馆藏范围

  • 85,576 篇 电子文献
  • 2,508 种 纸本馆藏

日期分布

学科分类号

  • 31,324 篇 工学
    • 5,898 篇 材料科学与工程(可...
    • 3,588 篇 生物医学工程(可授...
    • 3,517 篇 化学工程与技术
    • 2,243 篇 机械工程
    • 2,159 篇 电子科学与技术(可...
    • 1,738 篇 计算机科学与技术...
    • 1,695 篇 地质资源与地质工...
    • 1,494 篇 动力工程及工程热...
    • 1,362 篇 仪器科学与技术
    • 1,201 篇 电气工程
    • 1,192 篇 水利工程
    • 1,051 篇 环境科学与工程(可...
  • 28,396 篇 医学
    • 22,936 篇 临床医学
    • 3,875 篇 医学技术(可授医学...
    • 2,838 篇 基础医学(可授医学...
    • 2,186 篇 中西医结合
    • 1,949 篇 公共卫生与预防医...
    • 1,360 篇 药学(可授医学、理...
  • 13,866 篇 理学
    • 2,441 篇 物理学
    • 2,289 篇 生物学
    • 2,212 篇 化学
    • 1,866 篇 地质学
    • 1,623 篇 数学
  • 7,512 篇 农学
    • 1,757 篇 作物学
    • 1,726 篇 畜牧学
    • 1,103 篇 农业资源与环境
  • 3,848 篇 管理学
    • 1,676 篇 管理科学与工程(可...
    • 1,173 篇 公共管理
  • 2,530 篇 经济学
    • 2,175 篇 应用经济学
  • 2,181 篇 教育学
    • 1,496 篇 教育学
  • 1,678 篇 文学
  • 1,560 篇 法学
  • 618 篇 艺术学
  • 584 篇 历史学
  • 580 篇 哲学
  • 175 篇 军事学

主题

  • 857 篇 ct
  • 803 篇 美国
  • 669 篇 mri
  • 519 篇 病人
  • 480 篇 患者
  • 418 篇 mr
  • 362 篇 北美洲
  • 291 篇 美利坚合众国
  • 188 篇 治疗
  • 180 篇 应用
  • 165 篇 cancer
  • 144 篇 中国
  • 143 篇 设计
  • 134 篇 诊断
  • 126 篇 analysis
  • 126 篇 产量
  • 126 篇 儿童
  • 122 篇 and
  • 119 篇 方程
  • 116 篇 英国

机构

  • 213 篇 北京大学
  • 122 篇 南京大学
  • 108 篇 清华大学
  • 104 篇 同济大学
  • 95 篇 同济医科大学附属...
  • 84 篇 university of ch...
  • 83 篇 美国加州大学
  • 82 篇 华中科技大学
  • 73 篇 中国科学院大学
  • 71 篇 浙江大学
  • 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...
  • 66 篇 national researc...
  • 66 篇 institut fur the...
  • 66 篇 dept.of physics ...
  • 66 篇 compas group ins...
  • 66 篇 rudolf peierls c...

作者

  • 163 篇 叶鹏
  • 112 篇 郭俊
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 84 篇 m.white
  • 71 篇 p.de jong
  • 67 篇 刘莉
  • 66 篇 朱国栋
  • 62 篇 j.zhang
  • 61 篇 唐光健
  • 60 篇 li j
  • 50 篇 china
  • 44 篇 郭战宏
  • 43 篇 王铮
  • 43 篇 v.i.belousov
  • 43 篇 胡孔足
  • 42 篇 余英豪
  • 39 篇 崔荣
  • 38 篇 李长根

语言

  • 62,984 篇 中文
  • 24,963 篇 英文
  • 1 篇 德文
  • 1 篇 法文
  • 1 篇 日文
  • 1 篇 其他
检索条件"作者=Lee j"
87968 条 记 录,以下是4991-5000 订阅
排序:
Nutritional status of four species of giant land snails in Nigeria
收藏 引用
journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2006年 第9期7卷 686-689页
作者: FAGBUARO O OSO j.A. EDWARD j.B. OGUNLEYE R.F. Department of Zoology Faculty of Science University of Ado-Ekiti PMB 5363 Ado Ekiti Nigeria
Four species of African giant land snails (Archachatina marginata (ovum ) Pfeiffer, Archachatina marginata (saturalis ) Philippi, Achatina achatina and Limicolaria spp.) were assessed for their proximate and min... 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 arms race between Magnaporthe oryzae and rice: Diversity and interaction of Avr and R genes
收藏 引用
journal of Integrative Agriculture 2017年 第12期16卷 2746-2760页
作者: WANG Bao-hua Daniel j.Ebbole WANG Zong-hua College of Plant Protection/Fujian University Key Laboratory for Plant-Microbe Interaction Fujian Agriculture and Forestry University Department of Plant Pathology and Microbiology Texas A&M UniversityCollege Station Ocean Institute Minjiang University
Rice blast disease, caused by Magnaporthe oryzae, threatens global food security. The rice blast pathosystem is a longstanding model system for understanding plant-microbe interactions. In order to elucidate the coevo... 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
Encoding and Multiplexing of 2D Images with Orbital Angular Momentum Beams and the Use for Multiview Color Displays
收藏 引用
Research 2019年 第1期2019卷 1144-1154页
作者: j.Chu D.Chu Q.Smithwick Centre for Photonics Devices and Sensors University of Cambridge9 JJ Tomson AvenueCambridge CB30FAUK Disney Research GlendaleCalifornia 91201-5020USA
Te orthogonal nature of diferent orbital angular momentum modes enables information transmission in optical communications with increased bandwidth through mode division *** far the related works have been focused on ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Understanding super-enhancers
收藏 引用
Science China(Life Sciences) 2016年 第3期59卷 277-280页
作者: Hao Cheng Xiaoyang Dou jing-Dong j.Han Key Laboratory of Computational Biology CAS Center for Excellence in Molecular Cell Science Collaborative Innovation Center for Genetics and Developmental Biology Chinese Academy of Sciences-Max Planck Partner Institute for Computational Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences
Super-enhancers are defined as cluster of enhancers with dense TF binding, which can activate proximal cell-identity gene expression. Here we review the identification, func- tional significance of super-enhancers, 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
The unfolded protein response signaling and retinal Müller cell metabolism
收藏 引用
Neural Regeneration Research 2018年 第11期13卷 1861-1870页
作者: Kristen Kelly joshua j.Wang Sarah X.Zhang Department of Ophthalmology and Neuroscience Program Ross Eye InstituteUniversity at BuffaloState University of New York SUNY Eye Institute State University of New YorkBuffaloNYUSA
The retina is one of the most energy demanding tissues in the body. Like most neurons in the central nervous system, retinal neurons consume high amounts of adenosine-5′-triphosphate(ATP) to generate visual signal ... 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
Exercise intolerance in heart failure with preserved ejection fraction: more than a heart problem
收藏 引用
journal of Geriatric Cardiology 2015年 第3期12卷 294-304页
作者: Bharathi Upadhya Mark j Haykowsky joel Eggebeen Dalane W Kitzman Cardiology and Geriatrics Wake Forest School of Medicine Medical Center Blvd Winston Salem NC USA Faculty of Rehabilitation Medicine University of Alberta Edmonton AB Canada
Heart failure (HF) with preserved ejection fraction (HFpEF) is the most common form of HF in older adults, and is increasing in preva- lence as the population ages. Furthermore, HFpEF is increasing out of proporti... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Design,synthesis,characterization,cytotoxic and structure activity relationships of novel Ru(Ⅱ) complexes
收藏 引用
Chinese Chemical Letters 2015年 第6期26卷 721-726页
作者: Sreekanth Thota Srujana Vallala Rajeshwar Yerra Eliezer j.Barreiro National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN) Center for Technological Development in Health (CDTS)Fundao Oswaldo CruzMinistério da SadeAv.Brasil 4036Prédio da Expanso8° AndarSala 814Manguinhos21040-361 Rio de JaneiroRJBrazil Programa de Desenvolvimento de Frmacos Instituto de Ciências BiomédicasUniversidade Federal do Rio de Janeiro S.R. College of Pharmacy Department of Pharmaceutical Chemistry & Toxicology
Platinum containing compounds have shown antineoplastic potential, but their clinical applications have been limited by high toxicity. Ruthenium containing complexes have long been known to be well suited for biologic... 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
Hydrothermal base catalyzed depolymerization and conversion of technical lignin-An introductory review
收藏 引用
Carbon Resources Conversion 2019年 第1期2卷 59-71页
作者: Malte Otromke Robin j.White jorg Sauer Institute of Catalysis Research and Technology(IKFT) Karlsruhe Institute of Technology(KIT)Eggenstein-LeopoldshafenGermany Sustainable Catalytic Materials Group Division Hydrogen TechnologiesFraunhofer Institute for Solar Energy Systems ISEHeidenhofstr.279110 FreiburgGermany GmbH Group Process TechnologyFrankfurt am MainGermany
Lignin represents the most significant potential source of sustainable aromatic ***,the vast majority of technical lignin could be sourced from industrial paper production and in particular the Kraft process,where it ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
A plant-based diet and hypertension
收藏 引用
journal of Geriatric Cardiology 2017年 第5期14卷 327-330页
作者: Sarah Alexander Robert j Ostfeld Kathleen Allen Kim A Williams Rush University Medical Center Division of Cardiology Chicago IL USA Montefiore Medical Center Division of Cardiology Bronx NY USA New York University Department of Nutrition & Food Studies NY USA
Hypertension is an insidious, common, and deadly dis-ease, often detected incidentally at a routine doctor's visit orworkplace health screening. Worldwide, it is estimated thatone billion people have hypertension and... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Path integral solutions for n-dimensional stochastic differential equations underα-stable Lévy excitation
收藏 引用
Theoretical & Applied Mechanics Letters 2023年 第2期13卷 98-112页
作者: Wanrong Zan Yong Xu jürgen Kurths School of Mathematics Northwest UniversityXi’an710127China Department of Applied Mathematics Northwestern Polytechnical UniversityXi’an710129China MIIT key Laboratory of Dynamics and Control of Complex Systems Northwestern Polytechnical UniversityXi’an710129China Potsdam Institute for Climate Impact Research Potsdam14412Germany Department of Physics Humboldt University of BerlinBerlin12489Germany
In this paper,the path integral solutions for a general n-dimensional stochastic differential equa-tions(SDEs)withα-stable Lévy noise are derived and ***,the governing equations for the solutions of n-dimensional SD... 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