咨询与建议

限定检索结果

文献类型

  • 82,640 篇 期刊文献
  • 5,466 篇 会议
  • 5,066 册 图书
  • 95 篇 学位论文
  • 49 篇 报纸

馆藏范围

  • 90,994 篇 电子文献
  • 2,410 种 纸本馆藏

日期分布

学科分类号

  • 36,918 篇 工学
    • 9,096 篇 材料科学与工程(可...
    • 5,252 篇 化学工程与技术
    • 4,228 篇 机械工程
    • 3,902 篇 生物医学工程(可授...
    • 3,201 篇 计算机科学与技术...
    • 3,111 篇 电子科学与技术(可...
    • 2,776 篇 动力工程及工程热...
    • 2,724 篇 地质资源与地质工...
    • 2,613 篇 电气工程
    • 2,552 篇 力学(可授工学、理...
    • 2,406 篇 环境科学与工程(可...
    • 2,276 篇 冶金工程
    • 2,116 篇 水利工程
    • 1,975 篇 控制科学与工程
  • 29,634 篇 医学
    • 24,706 篇 临床医学
    • 3,612 篇 医学技术(可授医学...
    • 3,600 篇 基础医学(可授医学...
    • 2,501 篇 公共卫生与预防医...
    • 2,188 篇 中西医结合
  • 22,239 篇 理学
    • 6,045 篇 化学
    • 5,861 篇 物理学
    • 4,904 篇 生物学
    • 2,883 篇 数学
    • 2,695 篇 地质学
    • 2,393 篇 地球物理学
    • 1,835 篇 天文学
  • 8,314 篇 农学
    • 2,558 篇 作物学
    • 2,020 篇 畜牧学
  • 4,221 篇 管理学
    • 1,819 篇 管理科学与工程(可...
  • 2,700 篇 经济学
    • 2,372 篇 应用经济学
  • 2,669 篇 教育学
  • 1,903 篇 文学
  • 1,877 篇 法学
  • 818 篇 艺术学
  • 720 篇 历史学
  • 587 篇 哲学
  • 194 篇 军事学

主题

  • 738 篇 美国
  • 725 篇 ct
  • 626 篇 mri
  • 422 篇 病人
  • 416 篇 患者
  • 336 篇 mr
  • 299 篇 北美洲
  • 293 篇 of
  • 239 篇 治疗
  • 211 篇 and
  • 209 篇 美利坚合众国
  • 201 篇 cancer
  • 193 篇 analysis
  • 167 篇 中国
  • 154 篇 方程
  • 145 篇 诊断
  • 136 篇 儿童
  • 134 篇 设计
  • 119 篇 应用
  • 113 篇 disease

机构

  • 231 篇 北京大学
  • 160 篇 同济医科大学附属...
  • 101 篇 清华大学
  • 84 篇 浙江大学
  • 75 篇 university of ch...
  • 73 篇 南京大学
  • 70 篇 同济大学
  • 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 institut fur the...
  • 67 篇 dept.of physics ...
  • 66 篇 national researc...
  • 66 篇 compas group ins...
  • 66 篇 rudolf peierls c...
  • 65 篇 nstitucio catala...
  • 65 篇 department of ph...
  • 64 篇 华中科技大学

作者

  • 180 篇 叶鹏
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 m.white
  • 81 篇 郭俊
  • 77 篇 刘莉
  • 76 篇 kevin d.hyde
  • 69 篇 p.de jong
  • 69 篇 china
  • 56 篇 李长根
  • 55 篇 唐光健
  • 53 篇 朱国栋
  • 45 篇 王铮
  • 44 篇 阿d
  • 43 篇 t.gries
  • 37 篇 v.i.belousov
  • 34 篇 d boy
  • 34 篇 刘凯
  • 33 篇 余英豪

语言

  • 60,923 篇 中文
  • 32,335 篇 英文
  • 29 篇 其他
  • 1 篇 德文
  • 1 篇 法文
  • 1 篇 日文
检索条件"作者=G.D.Yadav"
93316 条 记 录,以下是1-10 订阅
排序:
Toluene Alkylation with Methanol to p-Xylene over Heteropoly Acids Supported by Clay
收藏 引用
Journal of Natural gas Chemistry 2007年 第1期16卷 42-45页
作者: V.V.Bokade S.S.deshpande R.Patil S.Jain g.d.yadav Catalysis division National Chemical LaboratoryPune-411008India University Institute of Chemical Technology Mumbai-19India
The alkylation of toluene with methanol for the selective formation of p-xylene was systematically studied. Very few studies have been reported on the use of superacids such as heteropolyacids on cheap supports, such ... 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
Medicinal Effects, Phytochemistry,Pharmacology of Euphorbia prostrata and Promising MolecularMechanisms
收藏 引用
Chinese Journal of Integrative Medicine 2024年 第2期30卷 181-192页
作者: Nirmala Kumari yadav Rakesh yadav department of Pharmacy Banasthali VidyapithBanasthali(304022)RajasthanIndia department of Pharmaceutical Sciences Indira Gandhi UniversityMeerpurRewari(122502)HaryanaIndia National Forensic Sciences University Tripura CampusAgartala(799001)TripuraIndia
Euphorbiaceae is a large family of dicotyledonous angiosperms with diverse genera including Euphorbia prostrata(***).Current research has provided scientific evidence for traditional uses of *** against diverse pathol... 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
Traffic Engineering and Quality of Service in Hybrid Software defined Networks
收藏 引用
China Communications 2024年 第2期21卷 96-121页
作者: Samiullah Mehraban Rajesh Kumar yadav IOT Lab Department of Computer Science&EngineeringDelhi Technological UniversityDelhi 110042India
For Future networks, many research projects have proposed different architectures around the globe;Software defined Network(SdN) architectures, through separating data and Control Layers, offer a crucial structure for... 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
Laparoscopic right radical hemicolectomy: Central vascular ligation and complete mesocolon excision vs d3 lymphadenectomy - How I do it?
收藏 引用
World Journal of gastrointestinal Surgery 2024年 第6期16卷 1521-1526页
作者: Kaushal yadav department of Surgical Oncology Max HospitalGurugram 122001HaryanaIndia
In colon cancer surgery,ensuring the complete removal of the primary tumor and draining lymph nodes is *** drainage in the colon follows the vascular supply,typically progressing from pericolic to paraaortic lymph ***... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
CuO–TiO_(2) based self-powered broad band photodetector
收藏 引用
Nano Materials Science 2024年 第3期6卷 345-354页
作者: Chiranjib ghosh Arka dey Iman Biswas Rajeev Kumar gupta Vikram Singh yadav Ashish yadav Neha yadav Hongyu Zheng Mohamed Henini Aniruddha Mondal department of Physics National Institute of Technology DurgapurWest BengalIndia department of Physics University of Petroleum&Energy Studies DehradunUttarakhandIndia Babasaheb Bhimrao Ambedkar University Lucknow226031India Center for Advanced Laser Manufacturing(CALM) Shandong University of TechnologyZibo255000PR China School of Physics and Astronomy University of NottinghamNottinghamNG72RDUnited Kingdom
An efficient room-temperature self-powered,broadband(300 nm–1100 nm)photodetector based on a CuO–TiO_(2)/TiO_(2)/p-Si(100)heterostructure is *** CuO–TiO_(2)nanocomposites were grown in a two-zone horizontal tube fu... 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
gas hydrate saturation from NgHP 02 LWd data in the Mahanadi Basin
Energy Geoscience
收藏 引用
Energy geoscience 2024年 第2期5卷 279-289页
作者: Uma Shankar Pradeep Kumar yadav Sneha devi Udham Singh yadav department of geophysics Institute of ScienceBHUVaranasi221005India Oil and Natural gas Corporation Ltd. Gas Hydrate Research&Technology Centre(GHRTC)Panvel410221Navi MumbaiIndia
during the Indian National gas Hydrate Program(NgHP)Expedition 02,Logging-while-drilling(LWd)logs were acquired at three sites(NgHP-02-11,NgHP-02-12,and NgHP-02-13)across the Mahanadi Basin in area *** applied rock ph... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Automated Time Based Multi-Criteria Bug Triage Approach:developer Working Efficiency and Social Network Based developer Recommendation
收藏 引用
Journal of Shanghai Jiaotong university(Science) 2024年 第3期29卷 566-578页
作者: yadav Asmita SINgH Kumar Sandeep Krishna Engineering College Ghaziabad 201007India JIIT Noida 201309India
In software development projects,bugs are common *** report bugs in open source *** is a need to develop high quality developer prediction model that considers developer work satisfaction,keep within limited developme... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Modulatory role of plant-derived metabolites on host-microbiota interactions:personalized therapeutics outlook
收藏 引用
BIOCELL 2024年 第8期48卷 1127-1143页
作者: POOJA yadav NAR SINgH CHAUHAN department of Biochemistry Maharshi Dayanand University RohtakRohtakHaryanaIndia
A diverse array of microbes in and on the human body constitute the *** micro-residents continuously interact with the human host through the language of metabolites to dictate the host’s physiology in health and ***... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
genetic variability and trait association analysis in linseed (Linum usitatissimum L.) for yield and related traits
收藏 引用
Oil Crop Science 2024年 第3期9卷 151-159页
作者: yadav S.K. Singh N. yadav H.K. CSIR- National Botanical Research Institute Rana Pratap Marg Lucknow 226001 UP India Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
diversity information mining about a crop for different attributes is an essential step for effective breeding programs. The present investigation evaluates the quantum of genetic variability and determines the relati... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Application of Response Surface Methodology for Analysing and Optimizing the Finned Solar Air Heater
收藏 引用
Journal of Thermal Science 2024年 第3期33卷 985-1009页
作者: Vineet SINgH Vinod Singh yadav Vaibhav TRIVEdI Manoj KUMAR Niraj KUMAR department of Mechanical Engineering School of Engineering&TechnologyIFTM UniversityMoradabadUttar PradeshIndia department of Mechanical Engineering NITUttarakhandPauriUttarakhandIndia department of Electronics and Communication Engineering Jaypee Institute of Information TechnologyNoidaUttar Pradesh201309India
In this research paper,a solar air heater with triangular fins has been experimentally analysed and ***,an experimental set-up of a solar air heater having triangular fins has been developed at the location of 28.10°... 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