咨询与建议

限定检索结果

文献类型

  • 92,033 篇 期刊文献
  • 2,975 册 图书
  • 2,230 篇 会议
  • 95 篇 学位论文
  • 19 篇 报纸
  • 1 篇 多媒体

馆藏范围

  • 95,995 篇 电子文献
  • 1,372 种 纸本馆藏

日期分布

学科分类号

  • 33,869 篇 工学
    • 6,406 篇 材料科学与工程(可...
    • 4,739 篇 化学工程与技术
    • 3,498 篇 机械工程
    • 3,473 篇 计算机科学与技术...
    • 2,978 篇 生物医学工程(可授...
    • 2,593 篇 电子科学与技术(可...
    • 2,511 篇 环境科学与工程(可...
    • 2,365 篇 电气工程
    • 2,103 篇 动力工程及工程热...
    • 2,037 篇 水利工程
    • 2,035 篇 地质资源与地质工...
    • 1,797 篇 控制科学与工程
  • 33,227 篇 医学
    • 23,062 篇 临床医学
    • 3,224 篇 基础医学(可授医学...
    • 3,202 篇 公共卫生与预防医...
    • 2,993 篇 医学技术(可授医学...
    • 2,932 篇 中西医结合
    • 2,591 篇 护理学(可授医学、...
    • 2,420 篇 药学(可授医学、理...
  • 19,264 篇 理学
    • 5,259 篇 化学
    • 4,832 篇 生物学
    • 4,085 篇 物理学
    • 3,064 篇 数学
  • 9,416 篇 农学
    • 2,701 篇 作物学
    • 1,848 篇 农业资源与环境
  • 8,158 篇 教育学
    • 4,537 篇 体育学
    • 3,329 篇 教育学
  • 6,164 篇 管理学
    • 2,151 篇 管理科学与工程(可...
    • 1,945 篇 公共管理
  • 3,485 篇 经济学
    • 3,039 篇 应用经济学
  • 2,268 篇 法学
  • 1,986 篇 文学
  • 786 篇 艺术学
  • 628 篇 历史学
  • 530 篇 哲学
  • 180 篇 军事学

主题

  • 424 篇 中国
  • 404 篇 美国
  • 326 篇 影响因素
  • 316 篇 ct
  • 298 篇 应用
  • 285 篇 护理
  • 268 篇 儿童
  • 262 篇 of
  • 239 篇 mri
  • 226 篇 病人
  • 223 篇 治疗
  • 212 篇 高校
  • 209 篇 患者
  • 208 篇 and
  • 200 篇 对策
  • 195 篇 产量
  • 189 篇 大学生
  • 174 篇 体育教学
  • 167 篇 analysis
  • 163 篇 生活质量

机构

  • 544 篇 上海体育学院
  • 391 篇 西安交通大学
  • 367 篇 西北农林科技大学
  • 358 篇 武汉大学
  • 266 篇 东南大学
  • 246 篇 中南大学湘雅医院
  • 190 篇 浙江大学
  • 190 篇 中国地质大学
  • 184 篇 华中科技大学
  • 175 篇 北京大学
  • 173 篇 山东大学
  • 171 篇 苏州大学
  • 164 篇 兰州交通大学
  • 164 篇 陕西工学院
  • 158 篇 吉林大学
  • 156 篇 江南大学
  • 154 篇 清华大学
  • 153 篇 天津大学
  • 149 篇 中南大学
  • 136 篇 解放军总医院

作者

  • 142 篇 许爱娥
  • 109 篇 李玉娥
  • 89 篇 孙娥
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 83 篇 m.white
  • 78 篇 左剑恶
  • 73 篇 梁惠娥
  • 71 篇 李娥
  • 71 篇 叶鹏
  • 60 篇 mohamed s. el na...
  • 56 篇 王东胜
  • 56 篇 张凤娥
  • 55 篇 王金娥
  • 54 篇 梅姝娥
  • 54 篇 郭菊娥
  • 52 篇 杨淑娥
  • 52 篇 李月娥
  • 49 篇 曹秋娥

语言

  • 74,995 篇 中文
  • 22,324 篇 英文
  • 15 篇 其他
  • 2 篇 日文
检索条件"作者=el-sayed e.a.el-sobky"
97353 条 记 录,以下是1-10 订阅
排序:
Influence of preceding crop and tillage system on forage yield and quality of selected summer grass and legume forage crops under arid conditions
收藏 引用
Journal of Integrative Agriculture 2022年 第11期21卷 3329-3344页
作者: Hend H.M.HASSAN el-sayed e.a.el-sobky elsayed MANSOUR Ahmed S.M.el-KHOLY Mohamed F.AWAD Hayat ULLAH Avishek DATTA Forage Crops Research Department Field Crops Research InstituteAgricultural Research CenterGiza 12619Egypt Agronomy Department Faculty of AgricultureZagazig UniversityZagazig 44519Egypt Department of Biology College of ScienceTaif UniversityTaif 21944Saudi Arabia Agricultural Systems and engineering Department of FoodAgriculture and BioresourcesSchool of EnvironmentResources and DevelopmentAsian Institute of TechnologyKlong LuangPathum Thani 12120Thailand
Among the crop production factors,preceding crop and tillage management affect the sustainable use of soil resources and ultimately crop growth and *** study aimed at investigating the impact of preceding winter crops... 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
Mafic and felsic magmatism in the Wadi Kalalat area, South eastern Desert, egypt: mineralogy, geochemistry and geodynamic evolution during the Neoproterozoic in the Nubian Shield
收藏 引用
Acta Geochimica 2024年 第1期43卷 150-173页
作者: Adel A.Surour Ahmed A.Madani Mohamed A.el-sobky Faculty of Science Galala UniversityNew Galala CitySuez 43511Egypt Department of Geology Faculty of ScienceCairo UniversityGiza 12613Egypt egyptian Mineral Resources Authority P.O.Box 11517AbbasiyaCairoEgypt
In the south eastern Desert of egypt,two contrasting types of magmatism(mafic and felsic) are recorded in the Wadi Kalalat area,and form the Gabal el Motaghiarat and Gabal Batuga intrusions,*** two intrusions post-dat... 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
Classical taxonomy,molecular phylogeny and genetic analysis of the genus exitianus Ball,1929(Hemiptera:Cicadellidae:Deltocephalinae)from egypt
收藏 引用
Zoological Systematics 2024年 第2期49卷 143-157页
作者: Rabab M.el-Hady Ahmed F.el-sayed Survey&Taxonomy Department Plant Protection Research InstituteAgriculture Research CentreGizaEgypt Microbial Genetics Department Biotechnology Research InstituteNational Research CentreGizaEgypt egypt Center for Research and Regenerative Medicine(eCRRM) CairoEgypt
egyptian species of the leafhopper genus exitianus Ball,1929,***(St?l,1855),***(Distant,1908),and *** Ross,1968 are ***,morphological descriptions,and a key for their identification are *** this study,we used molecula... 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
Wood By-Products as UV Protection:A Consequence Review
收藏 引用
Journal of Renewable Materials 2024年 第4期12卷 699-720页
作者: Naglaa Salem elsayed Mohamed Hasanin Samir Kamel Cellulose and Paper Department National Research CentreCairo12622Egypt
In recent decades,the ozone layer has suffered considerable damage,increasing the entry of ultraviolet(UV)light into the atmosphere and reaching the earth’s surface,negatively affecting ***,researchers aimed to solve... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Hematobiochemical and histopathological alterations in Nile Tilapia(Oreochromis niloticus)exposed to ethidium bromide:The protective role of Spirulina platensis
收藏 引用
Aquaculture and Fisheries 2024年 第1期9卷 93-103页
作者: Sabreen Abdullah Mervat Naguib Alaa el-Din Salah el-Din Alaa el-Din H.sayed Zoology Department Faculty of ScienceAswan UniversityAswan81528Egypt Zoology Department Faculty of ScienceAssuit UniversityAssiut71516Egypt
ethidium bromide(etBr)is one of the contaminants recorded in aquatic environments whose effects have been investigated;however,there is still limited knowledge about its *** study examined the potential protective eff... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Comparison between seismic analysis of twisting and regular 52-story towers considering soil-structure interaction
收藏 引用
earthquake engineering and engineering Vibration 2024年 第3期23卷 663-675页
作者: Mohamed Naguib Abouelsaad Mohammed Shaaban Salah el Bagalaty Mohamed e.el Madawy Structural engineering Department Faculty of EngineeringMansura UniversityMansoura 35511Egypt Faculty of engineering Delta University for Science and TechnologyGamasa 35712Egypt
A dynamic analysis of both twisting and regular towers is carried out to determine the results of considering soil-structure interaction(SSI)on high-rise *** addition,the difference between the seismic performance 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
Nonlinear wave dispersion in monoatomic chains with lumped and distributed masses:discrete and continuum models
收藏 引用
Applied Mathematics and Mechanics(english edition) 2024年 第4期45卷 633-648页
作者: e.GHAVANLOO S.el-BORGI School of Mechanical engineering Shiraz UniversityShiraz 71963-16548Iran Mechanical engineering Program Texas A&M University at QatarDoha 23874Qatar
The main objective of this paper is to investigate the influence of inertia of nonlinear springs on the dispersion behavior of discrete monoatomic chains with lumped and distributed *** developed model can represent t... 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
Rao Algorithms-Based Structure Optimization for Heterogeneous Wireless Sensor Networks
收藏 引用
Computers, Materials & Continua 2024年 第1期78卷 873-897页
作者: Shereen K.Refaay Samia A.Ali Moumen T.el-Melegy Louai A.Maghrabi Hamdy H.el-sayed Faculty of Computers and Artificial Intelligence Sohag UniversitySohag82524Egypt Faculty of engineering Assiut UniversityAssiut711745Egypt College of engineering University of Business and TechnologyJeddah23411Saudi Arabia
The structural optimization of wireless sensor networks is a critical issue because it impacts energy consumption and hence the network’s *** studies have been conducted for homogeneous networks,but few have been per... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Urban electric Vehicle Charging Station Placement Optimization with Graylag Goose Optimization Voting Classifier
收藏 引用
Computers, Materials & Continua 2024年 第7期80卷 1163-1177页
作者: Amel Ali Alhussan Doaa Sami Khafaga el-sayed M.el-kenawy Marwa M.eid Abdelhameed Ibrahim Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Communications and electronics Delta Higher Institute for Engineering and TechnologyMansoura35511Egypt Faculty of Artificial Intelligence Delta University for Science and TechnologyMansoura35712Egypt Computer engineering and Control Systems Department Faculty of EngineeringMansoura UniversityMansoura35516Egypt
To reduce the negative effects that conventional modes of transportation have on the environment,researchers are working to increase the use of electric *** demand for environmentally friendly transportation may be ha... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Arrhythmia Detection by Using Chaos Theory with Machine Learning Algorithms
收藏 引用
Computers, Materials & Continua 2024年 第6期79卷 3855-3875页
作者: Maie Aboghazalah Passent el-kafrawy Abdelmoty M.Ahmed Rasha elnemr Belgacem Bouallegue Ayman el-sayed Math and Computer Science Department Faculty of ScienceMenoufia UniversityShebin El-komEgypt College of engineering Computer Science DepartmentEffat UniversityJeddahKingdom of Saudi Arabia Department of Computer engineering College of Computer ScienceKing Khalid UniversityAbha61421Saudi Arabia Computer Science and engineering Department Faculty of Electronic EngineeringMenoufia UniversityShebin El-komEgypt Climate Change Information Center and expert Systems Agriculture Research CenterGizaEgypt
Heart monitoring improves life ***(eCGs or eKGs)detect heart *** learning algorithms can create a few eCG diagnosis processing *** first method uses raw eCG and time-series *** second method classifies the eCG by pati... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论