咨询与建议

限定检索结果

文献类型

  • 13,168 篇 期刊文献
  • 1,199 册 图书
  • 750 篇 会议
  • 60 篇 学位论文
  • 45 篇 报纸
  • 3 篇 多媒体

馆藏范围

  • 14,650 篇 电子文献
  • 581 种 纸本馆藏

日期分布

学科分类号

  • 5,345 篇 工学
    • 961 篇 材料科学与工程(可...
    • 820 篇 计算机科学与技术...
    • 700 篇 化学工程与技术
    • 650 篇 电子科学与技术(可...
    • 541 篇 机械工程
    • 537 篇 环境科学与工程(可...
    • 497 篇 电气工程
    • 391 篇 建筑学
    • 358 篇 仪器科学与技术
    • 353 篇 动力工程及工程热...
    • 353 篇 信息与通信工程
    • 320 篇 地质资源与地质工...
  • 4,099 篇 医学
    • 3,256 篇 临床医学
    • 595 篇 公共卫生与预防医...
    • 507 篇 基础医学(可授医学...
  • 3,420 篇 理学
    • 1,132 篇 生物学
    • 699 篇 化学
    • 664 篇 物理学
    • 411 篇 数学
    • 353 篇 地质学
    • 351 篇 地球物理学
    • 343 篇 生态学
  • 1,523 篇 管理学
    • 658 篇 管理科学与工程(可...
    • 470 篇 公共管理
    • 397 篇 工商管理
  • 1,366 篇 农学
    • 408 篇 作物学
    • 369 篇 畜牧学
  • 1,115 篇 经济学
    • 980 篇 应用经济学
  • 879 篇 教育学
    • 543 篇 教育学
  • 705 篇 文学
    • 437 篇 外国语言文学
  • 527 篇 法学
  • 257 篇 艺术学
  • 170 篇 历史学
  • 163 篇 哲学
  • 34 篇 军事学

主题

  • 176 篇 中国
  • 97 篇 美国
  • 43 篇 analysis
  • 39 篇 气候变化
  • 36 篇 liver
  • 33 篇 mortality
  • 31 篇 diabetes
  • 31 篇 dna
  • 29 篇 management
  • 27 篇 患者
  • 27 篇 metabolism
  • 26 篇 品牌
  • 26 篇 and
  • 26 篇 cancer
  • 25 篇 软件
  • 24 篇 橡胶
  • 24 篇 性能
  • 23 篇 日本
  • 23 篇 大不列颠及北爱尔...
  • 23 篇 therapy

机构

  • 70 篇 北京大学
  • 51 篇 英国剑桥大学
  • 48 篇 澳大利亚monash大...
  • 43 篇 chongyang instit...
  • 42 篇 浙江大学
  • 39 篇 上海交通大学
  • 39 篇 清华大学
  • 29 篇 中国地质大学
  • 23 篇 中国科学院大学
  • 20 篇 复旦大学
  • 20 篇 美国俄勒冈大学
  • 19 篇 中国人民大学
  • 18 篇 health systems r...
  • 18 篇 section for inte...
  • 18 篇 哈佛大学
  • 18 篇 华东师范大学
  • 18 篇 南京农业大学
  • 17 篇 华中科技大学
  • 17 篇 中山大学
  • 16 篇 首都医科大学

作者

  • 280 篇 john
  • 111 篇 john ross
  • 38 篇 john emsley
  • 37 篇 约翰·斯彼克曼
  • 26 篇 john gu
  • 23 篇 simon lewin
  • 23 篇 李幼平
  • 21 篇 john edwards
  • 19 篇 约翰·马特森
  • 18 篇 john abraham
  • 18 篇 艾哲庸
  • 17 篇 杨辉
  • 17 篇 john murtagh
  • 16 篇 蒋兰慧
  • 16 篇 john roach
  • 15 篇 john richardson
  • 15 篇 owen
  • 14 篇 john clyman
  • 14 篇 约翰·杜威
  • 14 篇 john.

语言

  • 9,226 篇 中文
  • 5,994 篇 英文
  • 1 篇 日文
检索条件"作者=Vallance-owen, john"
15225 条 记 录,以下是1-10 订阅
排序:
CHANGING PREVALENCE AND PATTERN OF CARDIOVASCULAR DISEASES IN HONG KONG: A PERSPECTIVE IN THE 1990s
收藏 引用
中华医学杂志(英文版) 1988年 第8期101卷 586-586页
作者: Woo Kam-sang vallance-owen, john Department of Medicine The Chinese University of Hong Kong Prince of Wales Hospital Hong Kong
The prevalence and pattern of cardiovascular problems in Hong Kong are basically those of an ageing subtropical Chinese community, influenced by the impact of westernization and urbanization. Their trends over the pas...
来源: 同方期刊数据库 同方期刊数据库 同方期刊数据库 同方期刊数据库 评论
Associations between health-related fitness and patient-reported symptoms in newly diagnosed breast cancer patients
收藏 引用
Journal of Sport and Health Science 2024年 第6期13卷 851-862页
作者: Ki-Yong An Fernanda Z.Arthuso Myriam Filion Spencer J.Allen Stephanie M.Ntoukas Gordon J.Bell Jessica McNeil Qinggang Wang Margaret L.McNeely Jeff K.vallance Lin Yang S.Nicole Culos-Reed Leanne Dickau john R.Mackey Christine M.Friedenreich Kerry S.Courneya Faculty of Kinesiology Sportand RecreationCollege of Health SciencesUniversity of AlbertaEdmonton T6G 2H9Canada Department of Kinesiology School of Health and Human SciencesUniversity of North Carolina at GreensboroGreensboroNC 27412USA Department of Cancer Epidemiology and Prevention Research Cancer Care AlbertaAlberta Health ServicesCalgary T2S 3C3Canada Faculty of Rehabilitation Medicine University of AlbertaEdmonton T6G 2H9Canada Faculty of Health Disciplines Athabasca UniversityAthabasca T9S 3A3Canada Department of Oncology Cumming School of MedicineUniversity of CalgaryCalgary T2N 4N1Canada Faculty of Kinesiology University of CalgaryCalgary T2N 1N4Canada Faculty of Medicine and Dentistry University of AlbertaEdmonton T6G 2H9Canada
Background:Newly diagnosed breast cancer patients experience symptoms that may affect their quality of life,treatment outcomes,and *** and managing breast cancer-related symptoms soon after diagnosis is *** purpose of... 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
Spatiotemporal dynamics in butterfly hybrid zones
收藏 引用
Insect Science 2024年 第2期31卷 328-353页
作者: Ananda R.Pereira Martins Natalie B.Warren W.owen McMillan Rowan D.H.Barrett Redpath Museum McGill University859 Sherbrooke Street WestMontrealQuebecCanada Smithsonian Tropical ResearchInstitute GamboaPanama CityPanama
Evaluating whether hybrid zones are stable or mobile can provide novelinsights for evolution and conservation biology. Butterflies exhibit high sensitivity to envi-ronmental changes and represent an important model sy... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Challenges and Opportunities in Preserving Key Structural Features of 3D-Printed Metal/Covalent Organic Framework
收藏 引用
Nano-Micro Letters 2024年 第8期16卷 362-381页
作者: Ximeng Liu Dan Zhao john Wang Department of Materials Science and Engineering National University of SingaporeSingapore 117574Singapore Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore National University of Singapore(Chongqing)Research Institute Chongqing 401123People’s Republic of China
Metal-organic framework(MOF)and covalent organic framework(COF)are a huge group of advanced porous materials exhibiting attractive and tunable microstructural features,such as large surface area,tunable pore size,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
Experimental and analytical investigation on friction resistance force between buried coated pressurized steel pipes and soil
收藏 引用
Frontiers of Structural and Civil Engineering 2024年 第4期18卷 615-629页
作者: Shaurav ALAM Tanvir MANZUR john MATTHEWS Chris BARTLETT Erez ALLOUCHE Brent KEIL john KRAFT Department of Civil Engineering and Construction Engineering Technology Louisiana Tech UniversityRustonLA 71270USA Department of Civil Engineering Bangladesh University of Engineering and TechnologyDhaka 1000Bangladesh Georgia Tech Research Institute AtlantaGA 30332USA Stantec Inc. Edmonton T5J0K4Canada North West Pipe Company VancouverWA 98684USA
This paper presents an analytical approach for estimating frictional resistance to pipe movement at soil and external pipe surface of buried coated pressurized steel pipes relative to the internal thrust *** proposed ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Irrigation and nitrogen fertiliser optimisation in protected vegetable fields of northern China:Achieving environmental and agronomic sustainability
收藏 引用
Journal of Integrative Agriculture 2024年 第3期23卷 1022-1033页
作者: Bingqian Fan Yitao Zhang owen Fenton Karen Daly Jungai Li Hongyuan Wang Limei Zhai Xiaosheng Luo Qiuliang Lei Shuxia Wu Hongbin Liu State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Nonpoint Source Pollution Control Ministry of Agriculture and Rural Affairs/lnstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China Teagasc Environmental Research CentreWexford Y35Ireland Institute of Plant Nutrition Resources and Environmental SciencesHenan Academy of Agricultural SciencesZhengzhou 450002China
Globally,sub-optimal use of nitrogen (N) fertiliser and elevated N irrigation groundwater have led to high leached nitrate (NO_(3)^(–)) losses from protected vegetable field *** fertiliser and irrigation management i... 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 Population Dynamics Approach to the Distribution of Space Debris in Low Earth Orbit
收藏 引用
Communications on Applied Mathematics and Computation 2024年 第1期6卷 340-353页
作者: john Jurkiewicz Peter Hinow Department of Mathematical Sciences University of Wisconsin-MilwaukeeMilwaukeeWI53201USA
The presence of the debris in the Earth’s orbit poses a significant risk to human activity in outer *** debris population continues to grow due to ground launches,the loss of external parts from space ships,and uncon... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Surgical treatment of inflammatory bowel disease:From the gastroenterologist’s stand-point
收藏 引用
World Journal of Gastrointestinal Surgery 2024年 第5期16卷 1235-1254页
作者: john K Triantafillidis Inflammatory Bowel Disease Unit “Metropolitan General”HospitalHolargos 15562AtticaGreece Hellenic Society of Gastrointestinal Oncology Haidari 12461AthensGreece
Treatment of ulcerative colitis(UC)and Crohn’s disease(CD)represents,in the majority of cases,a real challenge to the gastroenterologist’s abilities and skills as well as a clinical test concerning his/her levels of... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
How completely are randomized controlled trials of non-pharmacological interventions following concussion reported? A systematic review
收藏 引用
Journal of Sport and Health Science 2024年 第4期13卷 537-547页
作者: Jacqueline Josee van Ierssel Olivia Galea Kirsten Holte Caroline Luszawski Elizabeth Jenkins Jennifer O’Neil Carolyn A Emery Rebekah Mannix Kathryn Schneider Keith owen Yeates Roger Zemek Children’s Hospital of Eastern Ontario Research Institute OttawaON K1H 8L1Canada The Centre for Health Activity and Rehabilitation ResearchUniversity of OtagoDunedin 9016New Zealand Sport Injury Prevention Research Centre Faculty of KinesiologyUniversity of CalgaryCalgaryAB T2N 1N4Canada Alberta Children’s Hospital Research Institute University of Calgary CalgaryAB T2N 1N4Canada Hotchkiss Brain Institute University of CalgaryCalgaryAB T2N 4N1Canada Department of Psychology University of CalgaryCalgaryAB T2N 1N4Canada g Faculty of MedicineUniversity of OttawaOttawaON K1H 8M5Canada School of Rehabilitation Sciences University of OttawaOttawaON K1H 8M5Canada Bruyere Research Institute OttawaON K1N 5C8Canada Departments of Pediatrics and Emergency Medicine Harvard Medical SchoolBostonMA 02115USA Departments of Pediatrics and Emergency Medicine University of OttawaOttawaON K1H 8M5Canada
Purpose:The study aimed to examine the reporting completeness of randomized controlled trials(RCTs)of non-pharmacological interventions following ***:We searched MEDLINE,Embase,PsycInfo,CINAHL,and Web of Science up to... 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
Study of hybrid nanofluid flow in a stationary cone-disk system with temperature-dependent fluid properties
收藏 引用
Applied Mathematics and Mechanics(English Edition) 2024年 第4期45卷 677-694页
作者: A.S.john B.MAHANTHESH G.LORENZINI Center for Mathematical Needs Department of MathematicsCHRIST(Deemed to be University)Karnataka 560029India School of Mathematical and Statistical Sciences The University of Texas Rio Grande ValleyTexas 78539U.S.A. Department of Engineering and Architecture University of ParmaParma 43124Italy
Cone-disk systems find frequent use such as conical diffusers,medical devices,various rheometric,and viscosimetry *** this study,we investigate the three-dimensional flow of a water-based Ag-Mg O hybrid nanofluid in a... 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