咨询与建议

限定检索结果

文献类型

  • 49,100 篇 期刊文献
  • 1,806 篇 会议
  • 777 册 图书
  • 6 篇 学位论文

馆藏范围

  • 51,466 篇 电子文献
  • 252 种 纸本馆藏

日期分布

学科分类号

  • 22,175 篇 医学
    • 17,245 篇 临床医学
    • 3,192 篇 医学技术(可授医学...
    • 2,112 篇 基础医学(可授医学...
    • 1,904 篇 中西医结合
    • 1,373 篇 公共卫生与预防医...
    • 1,133 篇 药学(可授医学、理...
    • 865 篇 护理学(可授医学、...
  • 17,696 篇 工学
    • 3,799 篇 材料科学与工程(可...
    • 2,921 篇 生物医学工程(可授...
    • 2,188 篇 化学工程与技术
    • 1,124 篇 机械工程
    • 1,109 篇 电子科学与技术(可...
    • 863 篇 计算机科学与技术...
    • 822 篇 动力工程及工程热...
    • 669 篇 水利工程
    • 651 篇 仪器科学与技术
    • 645 篇 力学(可授工学、理...
  • 8,855 篇 理学
    • 1,642 篇 物理学
    • 1,503 篇 生物学
    • 1,421 篇 化学
    • 1,221 篇 数学
    • 888 篇 地质学
    • 638 篇 地球物理学
  • 3,921 篇 农学
    • 823 篇 作物学
    • 798 篇 畜牧学
    • 735 篇 农业资源与环境
  • 2,113 篇 管理学
    • 857 篇 管理科学与工程(可...
    • 770 篇 公共管理
  • 1,251 篇 经济学
    • 1,091 篇 应用经济学
  • 1,226 篇 教育学
    • 654 篇 教育学
  • 1,101 篇 法学
  • 648 篇 文学
  • 277 篇 历史学
  • 256 篇 哲学
  • 202 篇 艺术学
  • 65 篇 军事学

主题

  • 622 篇 治疗
  • 533 篇 ct
  • 425 篇 mri
  • 351 篇 诊断
  • 348 篇 病人
  • 294 篇 患者
  • 241 篇 儿童
  • 236 篇 mr
  • 157 篇 中国
  • 151 篇 高血压
  • 134 篇 美国
  • 97 篇 covid-19
  • 90 篇 analysis
  • 73 篇 临床应用
  • 73 篇 of
  • 68 篇 免疫组织化学
  • 68 篇 耐药性
  • 67 篇 microstructure
  • 66 篇 发生率
  • 65 篇 and

机构

  • 129 篇 四川省人民医院
  • 117 篇 上海第二医科大学...
  • 90 篇 中国科学院大学
  • 85 篇 华中科技大学
  • 82 篇 上海交通大学
  • 73 篇 中国人民公安大学
  • 73 篇 香港理工大学
  • 73 篇 复旦大学
  • 68 篇 university of mi...
  • 67 篇 institute for pa...
  • 67 篇 albert einstein ...
  • 67 篇 dipartimento di ...
  • 66 篇 nikhef p.o.box 4...
  • 66 篇 fysikum stockhol...
  • 66 篇 michigan state u...
  • 66 篇 NOT FOUND
  • 66 篇 清华大学
  • 64 篇 national researc...
  • 63 篇 institut fur the...
  • 63 篇 北京大学

作者

  • 206 篇 叶鹏
  • 85 篇 f.krauss
  • 85 篇 g.weiglein
  • 85 篇 h.murayama
  • 85 篇 j.parsons
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 r.s.chivukula
  • 84 篇 y.kwon
  • 81 篇 m.white
  • 80 篇 刘莉
  • 78 篇 m.drees
  • 70 篇 s.blusk
  • 66 篇 郭战宏
  • 60 篇 k.monig
  • 51 篇 李开
  • 38 篇 j.zhang
  • 36 篇 朱国栋
  • 33 篇 s.h.lee
  • 32 篇 王铮

语言

  • 34,866 篇 中文
  • 16,819 篇 英文
  • 1 篇 法文
  • 1 篇 其他
检索条件"作者=J.s. Dubey"
51689 条 记 录,以下是21-30 订阅
排序:
sex Determination using Primary and Permanent Teeth under Different Environment Conditions:A Deoxyribonucleic Acid-based study
收藏 引用
journal of Forensic science and Medicine 2023年 第3期9卷 250-256页
作者: jaya dubey jigna s.shah Department of Oral Medicine and Radiology Government Dental College and HospitalAhmedabadGujaratIndia
Aims: The purpose of this study was to determine the sex of primary and permanent tooth pulp tissue under different environmental conditions using deoxyribonucleic acid (DNA) analysis and the polymerase chain reaction... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
EFFECT OF HEAT TREATMENTs ON THE MICROsTRUCTURE AND TRANsFORMATION CHARACTERIsTICs OF TiNiPd sHAPE MEMORY ALLOY THIN FILMs
收藏 引用
Acta Metallurgica sinica(English Letters) 2005年 第6期18卷 707-713页
作者: C.C. Zhang C.s. Yang G.F. Ding s. Q. Qian j.s. Wu National Key Laboratory of Nano/Micro Fabrication Technology Key Laboratory for Thin Film and Microfabrication of Ministry of Education Institute of Micro and Nano Science and Technology Shanghai Jiaotong University Shanghai 200030 China school of Material science and Engineering Shanghai Jiaotong University Shanghai 200030 China
Microstructure and phase transformation behaviors of the film annealed at different temperatures were studied by X-ray diffractometry (XRD), transmission electron microscopy and differential scanning calorimeter (... 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
sTRUCTURE IMPROVEMENT AND TEMPERATURE FIELD sIMULATION OF PREPARING NANOPOWDER BY EVAPORATION-CONDENsATION METHOD
收藏 引用
Acta Metallurgica sinica(English Letters) 2008年 第3期21卷 178-182页
作者: j.s. Bao Y. Yin T.G. Liu Z.Y. Yang school of Mechanical and Electrical Engineering China University of Mining and Technology Xuzhou221116 China
A new apparatus, with a segregable conical water cooling condenser, which is heated by an electric arc using the evaporation-condensation method to prepare carbon-coated nanopowder, has been developed by the authors. ... 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
Heavy Metal Toxicity in a N_2-Fixing Cyanobacterium, Anabaena doliolum: Regulation of Toxicity by Certain Environmental Factors
收藏 引用
Biomedical and Environmental sciences 1990年 第2期3卷 240-249页
作者: s.K.dubey L.C.RAI Laboratory of Algal Biology Centre of Advanced Study in BotanyBanaras Hindu University Varanasi-221005 India
The toxic effects of chromium and tin salts on growth, ^(14)C uptake, heterocyst differentiation, and nitrate reductase. nitrogenase, and glutamine synthetase activities of Anabaena doliolum and their regulation by pH... 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
APPROXIMATION OF FUNCTIONs BY(N,p)OPERATOR
收藏 引用
Analysis in Theory and Applications 1994年 第2期10卷 67-73页
作者: s.N.dubey A.Kumar sanjay Gandhi sarvodaya science college India R. D. University India Principal Sanjay Gandhi Sarvodaya Science College Ranital Jabalpur 482002 (M. P.) India R. D. University Jabalpur
The present paper deals with finding of constant occurring in the order of approximation of the function of Lipα(O <α<1) class by using (N, p) operator. Obviously the factor 1/ (1 - α) becomes large when α is clos... 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 systematic review of progenitor survival and maturation in Parkinsonian models
收藏 引用
Neural Regeneration Research 2025年 第11期20卷 3172-3178页
作者: Giulia Comini Eilís Dowd Pharmacology&Therapeutics and Galway Neuroscience Center University of GalwayGalwayIreland
stem cell-based brain repair is a promising emergent therapy for Parkinson's disease based on years of foundational research using human fetal donors as a cell *** current therapeutic options for patients,this approac... 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
Image of polynomials under generalized szasz operators
收藏 引用
Applied Mathematics(A journal of Chinese Universities) 2021年 第4期36卷 599-610页
作者: Pooja Gupta Mangey Ram Ramu dubey Department of Mathematics J.C.Bose University of Science and TechnologyYMCAFaridabad 121006India Department of Mathematics Computer Science and Engineering Graphic Era Deemed to be UniversityDehradun 248002India
The motivation behind this paper is a sequence sn of generalized szasz operators using multiple Appell *** purpose of the present paper is to find the image of the polynomials under these *** find that as n→∞,s_(n)(... 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
Biodegradation analysis of pendimethalin by Planococcus citreus strain PD6 using FTIR and further in silico characterization for dehydrogenase as potential regulatory enzyme of degradation pathway
收藏 引用
systems Microbiology and Biomanufacturing 2023年 第4期3卷 719-729页
作者: Neha Trivedi Ashutosh dubey Department of Biochemistry College of Basic Science and HumanitiesGovind Ballabh Pant University of Agriculture and TechnologyPantnagar 263145UttarakhandIndia
Degradation of pendimethalin by microorganisms is an approach seeking more attention *** study aims to isolate a new strain of Planococcus,which is capable of degrading pendimethalin from the soil in rice *** of this ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Analytical modeling of subthreshold current and subthreshold swing of Gaussiandoped strained-si-on-insulator MOsFETs
收藏 引用
journal of semiconductors 2014年 第8期35卷 52-59页
作者: Gopal Rawat sanjay Kumar Ekta Goel Mirgender Kumar sarvesh dubey s.jit Department of Electronics Engineering Indian Institute of Technology (BHU) Varanasi India Faculty of Electronics and Communication Engineering Shri Ramswaroop Memorial University Lucknow-Deva Road India
This paper presents the analytical modeling of subthreshold current and subthreshold swing of short- channel fully-depleted (FD) strained-si-on-insulator (ssOI) MOsFETs having vertical Gaussian-like doping pro- fi... 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
Impact of mining on tree diversity of the silica mining forest area at shankargarh, Allahabad, India
收藏 引用
journal of Forestry Research 2011年 第4期22卷 527-532页
作者: Kumud dubey K. P. dubey Centre for social Forestry and Eco-Rehabilitation 3/1 Lajpat Rai Road Allahabad-211002 U.P. India. Conservator of Forest O/O Chief Conservator of Forest (Southern Zone) Office Allahabad-211001. U.P. India.
The shankargarh forest area is rich in silica, a major mineral used in glass industry. Extensive open cast silica mining has severely damaged the forest as well as productivity of the region. An understand- ing of the... 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