咨询与建议

限定检索结果

文献类型

  • 77,241 篇 期刊文献
  • 5,300 册 图书
  • 5,194 篇 会议
  • 32 篇 学位论文
  • 19 篇 报纸

馆藏范围

  • 85,396 篇 电子文献
  • 2,506 种 纸本馆藏

日期分布

学科分类号

  • 33,912 篇 工学
    • 7,919 篇 材料科学与工程(可...
    • 4,747 篇 化学工程与技术
    • 4,522 篇 生物医学工程(可授...
    • 3,791 篇 机械工程
    • 2,864 篇 电子科学与技术(可...
    • 2,710 篇 计算机科学与技术...
    • 2,597 篇 动力工程及工程热...
    • 2,380 篇 电气工程
    • 2,307 篇 地质资源与地质工...
    • 2,092 篇 力学(可授工学、理...
    • 2,085 篇 环境科学与工程(可...
    • 1,912 篇 冶金工程
    • 1,765 篇 控制科学与工程
    • 1,717 篇 水利工程
  • 29,219 篇 医学
    • 24,198 篇 临床医学
    • 4,320 篇 医学技术(可授医学...
    • 3,849 篇 基础医学(可授医学...
    • 2,572 篇 公共卫生与预防医...
    • 2,162 篇 中西医结合
    • 1,868 篇 药学(可授医学、理...
  • 19,478 篇 理学
    • 5,266 篇 化学
    • 4,921 篇 物理学
    • 4,663 篇 生物学
    • 2,393 篇 地质学
    • 2,241 篇 数学
    • 1,986 篇 地球物理学
  • 8,077 篇 农学
    • 2,490 篇 作物学
    • 2,009 篇 畜牧学
  • 4,057 篇 管理学
    • 1,750 篇 管理科学与工程(可...
  • 2,717 篇 教育学
  • 2,622 篇 经济学
    • 2,261 篇 应用经济学
  • 1,743 篇 法学
  • 1,729 篇 文学
  • 662 篇 艺术学
  • 628 篇 历史学
  • 585 篇 哲学
  • 177 篇 军事学

主题

  • 856 篇 ct
  • 811 篇 美国
  • 671 篇 mri
  • 520 篇 病人
  • 502 篇 患者
  • 418 篇 mr
  • 364 篇 北美洲
  • 291 篇 美利坚合众国
  • 228 篇 治疗
  • 210 篇 应用
  • 185 篇 中国
  • 173 篇 cancer
  • 147 篇 诊断
  • 143 篇 设计
  • 129 篇 儿童
  • 127 篇 analysis
  • 124 篇 产量
  • 124 篇 方程
  • 121 篇 英国
  • 119 篇 and

机构

  • 217 篇 北京大学
  • 124 篇 南京大学
  • 106 篇 同济大学
  • 106 篇 清华大学
  • 95 篇 同济医科大学附属...
  • 85 篇 美国加州大学
  • 81 篇 华中科技大学
  • 76 篇 university of ch...
  • 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...
  • 67 篇 中国科学院大学
  • 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

  • 164 篇 叶鹏
  • 110 篇 郭俊
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 m.white
  • 72 篇 p.de jong
  • 67 篇 刘莉
  • 66 篇 朱国栋
  • 63 篇 唐光健
  • 61 篇 j.zhang
  • 60 篇 li j
  • 55 篇 王铮
  • 50 篇 china
  • 44 篇 郭战宏
  • 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

  • 59,870 篇 中文
  • 27,837 篇 英文
  • 45 篇 其他
  • 1 篇 德文
  • 1 篇 法文
检索条件"作者=disha J. Vyas"
87786 条 记 录,以下是4991-5000 订阅
排序:
Small Angle Neutron Scattering and X-Ray Diffraction Studies of Nanocrystalline Titanium Dioxide
收藏 引用
j.urnal of Modern Physics 2011年 第9期2卷 962-965页
作者: M. Nasir Khan j. Bashir 不详
Nanocrystalline titanium dioxide powder is characterized for phase analysis as well as particle size and its distribution by x-ray diffraction and small angle neutron scattering measurements. Analysis of the SANS data... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Implementation of a drainage information, analysis and management system
收藏 引用
j.urnal of Traffic and Transportation Engineering(English Edition) 2017年 第2期4卷 165-177页
作者: j. N. Meegoda T. M. j.liano L. Potts C. Tang T. Marhaba Department of Civil & Environmental Engineering New Jersey Institute of Technology Newark NJ 07102 USA Department of Engineering Technology New Jersey Institute of Technology Newark NJ 07102 USA
An integrated drainage information, analysis and management system (DIAMS) was developed and implemented for the New j.rsey Department of Transportation (N/DOT). The purpose of the DIAMS is to provide a useful too... 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
Bound States of a System of Two Fermions on Invariant Subspace
收藏 引用
j.urnal of Modern Physics 2021年 第1期12卷 35-49页
作者: j. I. Abdullaev A. M. Toshturdiev Samarkand State University University Boulevard 15 Samarkand Uzbekistan
We consider a Hamiltonian of a system of two fermions on a three-dimensional lattice Z3 with special potential . The corresponding Shrödinger operator H(k) of the system has an invariant subspac L-123(T3) , where we s... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Fabrication and Characterization of Chitosan Based Inj.ctable Thermosensitive Hydrogels Containing Silica/Calcium Phosphate Nanocomposite Particles
收藏 引用
j.urnal of Biomaterials and Nanobiotechnology 2021年 第3期12卷 34-48页
作者: Seyed Mohsen Latifi Christina Tang Henry j. Donahue Bone Engineering Science and Technology (BEST) Lab Department of Biomedical Engineering Virginia Commonwealth University Richmond VA USA Department of Chemical and Life Sciences Engineering Virginia Commonwealth University Richmond VA USA
In this study, the effect of silica/calcium phosphate (SiCaP) nanocomposite particles on the properties of a novel chitosan-based thermosensitive hydrogel system was examined. SiCaP nanocomposite powder was fabricated... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
EXPERIMENTAL DEVICE ABOUT AUTOMATIC CONTROL OF A HYDRAULIC PRESS
EXPERIMENTAL DEVICE ABOUT AUTOMATIC CONTROL OF A HYDRAULIC P...
收藏 引用
亚州仿真会议暨第五届系统仿真和科学计算国际会议
作者: P. M. Talaia A. M. Rocha j. j. Grácio j. A. Ferreira Centre for Mechanical Technology and Automation Department of Mechanical Engineering University of Aveiro 3810-193 Aveiro Aveiro Portugal Centre for Mechanical Technology and Automation Department of Mechanical Engineering University of Aveiro 3810-193 Aveiro Aveiro Portugal Centre for Mechanical Technology and Automation Department of Mechanical Engineering University of Aveiro 3810-193 Aveiro Aveiro Portugal Centre for Mechanical Technology and Automation Department of Mechanical Engineering University of Aveiro 3810-193 Aveiro Aveiro Portugal
The present paper deals with the retrofitting of a 250 ton hydraulic press. The goal is to enhance the press with instrumentation, and proportional hydraulics, that allow the close loop control of
来源: cnki会议 评论
CXCL12 Retargeting of an Oncolytic Adenovirus Vector to the Chemokine CXCR4 and CXCR7 Receptors in Breast Cancer
收藏 引用
j.urnal of Cancer Therapy 2021年 第6期12卷 311-336页
作者: Samia M. O’Bryan j. Michael Mathis Department of Comparative Biomedical Sciences School of Veterinary Medicine Louisiana State University Baton Rouge LA USA University of North Texas Health Science Center Graduate School of Biomedical Sciences Fort Worth TX USA
Breast cancer is the most frequently diagnosed cancer in women under 60, and the second most diagnosed cancer in women over 60. While significant progress has been made in developing targeted therapies for breast canc... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Phytochemicals, polyphenols content, in vitro antioxidant and antibacterial activities of Albizia coriaria Welw ex. Oliver flowers
收藏 引用
Traditional Medicine Research 2023年 第2期8卷 1-6页
作者: Timothy Omara Ambrose K.Kiprop Viola j.Kosgei Department of Chemistry and Biochemistry School of Sciences and Aerospace StudiesMoi UniversityP.O.Box 3900-30100EldoretKenya Africa Center of Excellence II in Phytochemicals Textile and Renewable Energy(ACE II PTRE)Moi UniversityP.O.Box 3900-30100EldoretKenya Institute of Chemistry of Renewable Resources Department of ChemistryUniversity of Natural Resources and Life Sciences Vienna3430TullnAustria Testing Department Uganda National Bureau of StandardsBweyogerere Industrial and Business ParkP.O.Box 6329KampalaUganda
Albizia coriaria Welw ***(hereafter ***)is a revered medicinal tree whose organs are used by indigenous African societies for managing various ***,we assessed the secondary metabolites,total polyphenolics,free radical... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
End of Life Care Medical Education: 48 Hour Hospice Home Immersion Alters Students’ Lives
收藏 引用
International j.urnal of Clinical Medicine 2016年 第6期7卷 381-388页
作者: j. Kodela M. Gugliucci C. Farrell University of New England College of Osteopathic Medicine Biddeford Maine USA Department of Geriatric Medicine University of New England College of Osteopathic Medicine Biddeford Maine USA
Introduction: Education and skill enhancement in palliative and end of life care is rarely part of the foundational medical education curriculum. The progress of student physicians tends to be measured by their abilit... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
接受抗高血压药治疗的高血压患者夜间高血压的影响因素
收藏 引用
中华高血压杂志(中英文) 2024年 第3期32卷 300-300页
作者: Maruhashi T Kinoshita Y Ozono R Nakamaru M Ninomiya M Oiwa j.Kawagoe T Yoshida O Matsumoto T Fukunaga Y Sumii K Ueda H Shiode N Takahari K Hayashi Y Ono Y Nakano Y Takahashi M Kihara Y Higashi Y 刘青 练桂丽
背景:通过家庭血压监测(home blood pressure monitoring,HBPM)设备评估的夜间高血压与心血管事件风险增加相关。然而,经常评估夜间血压仍然很困难。该项横断面研究的目的是确定设备对接受抗高血压药治疗的高血压患者采用HBPM设备...
来源: 同方期刊数据库 同方期刊数据库 评论
Surface-Driven High-Pressure Processing
收藏 引用
Engineering 2018年 第3期4卷 311-320页
作者: Keith E. Gubbins Kai Gu Liangliang Huang Yun Long j. Matthew Mansell Erik E. Santiso Kaihang Shi Malgorzata Sliwifiska-Bartkowiak Deepti Srivastava Department of Chemical and Biomolecular Engineering North Carolina State University Raleigh NC 27695-7905 USA Department of Chemistry Zhejiang University Hangzhou 310027 China School of Chemical Biological and Materials Engineering The University of Oklahoma Norman OK 73019 USA Department of Chemical and Biomolecular Engineering National University of Singapore Singapore 117585 Singapore Faculty of Physics Adam Mickiewicz University in Poznan Poznaan 61-614 Poland
许多化学过程都要在高压下进行,因为高压状态能提高产率,加快化学反应的速率,在分离过程中提高溶剂的溶解率,并通过增加分子能量和分子碰撞率来克服活化作用的障碍。在实验室中可以通过使用金刚石砧室使压力达到数百万巴(1 bar=1×10~5P... 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