咨询与建议

限定检索结果

文献类型

  • 32,193 篇 期刊文献
  • 1,712 篇 会议
  • 966 册 图书
  • 88 篇 学位论文
  • 6 篇 报纸

馆藏范围

  • 34,549 篇 电子文献
  • 434 种 纸本馆藏

日期分布

学科分类号

  • 12,440 篇 工学
    • 2,436 篇 材料科学与工程(可...
    • 1,592 篇 化学工程与技术
    • 1,159 篇 生物医学工程(可授...
    • 958 篇 电子科学与技术(可...
    • 794 篇 机械工程
    • 794 篇 计算机科学与技术...
    • 580 篇 地质资源与地质工...
    • 578 篇 动力工程及工程热...
    • 544 篇 仪器科学与技术
    • 479 篇 电气工程
    • 463 篇 水利工程
    • 458 篇 环境科学与工程(可...
    • 440 篇 光学工程
  • 12,288 篇 医学
    • 10,025 篇 临床医学
    • 1,253 篇 医学技术(可授医学...
    • 940 篇 基础医学(可授医学...
    • 863 篇 中西医结合
    • 747 篇 公共卫生与预防医...
    • 560 篇 药学(可授医学、理...
  • 6,633 篇 理学
    • 1,297 篇 化学
    • 1,257 篇 物理学
    • 1,050 篇 数学
    • 930 篇 生物学
    • 610 篇 地质学
  • 2,923 篇 农学
    • 710 篇 作物学
    • 553 篇 畜牧学
    • 539 篇 农业资源与环境
  • 1,269 篇 管理学
    • 522 篇 管理科学与工程(可...
  • 990 篇 经济学
    • 848 篇 应用经济学
  • 736 篇 教育学
    • 499 篇 教育学
  • 550 篇 法学
  • 511 篇 文学
  • 229 篇 历史学
  • 164 篇 哲学
  • 160 篇 艺术学
  • 54 篇 军事学

主题

  • 175 篇 mri
  • 172 篇 ct
  • 169 篇 患者
  • 113 篇 analysis
  • 90 篇 of
  • 86 篇 and
  • 84 篇 diabetes
  • 80 篇 病人
  • 73 篇 acid
  • 70 篇 美国
  • 68 篇 deep learning
  • 66 篇 health
  • 61 篇 mr
  • 60 篇 simulation
  • 56 篇 survival
  • 56 篇 cancer
  • 55 篇 corrosion
  • 54 篇 prevalence
  • 43 篇 case report
  • 42 篇 genetic

机构

  • 68 篇 university of mi...
  • 68 篇 department of ph...
  • 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 ...
  • 67 篇 compas group ins...
  • 67 篇 rudolf peierls c...
  • 67 篇 nstitucio catala...
  • 67 篇 school of physic...
  • 67 篇 ludwig-maximilia...
  • 67 篇 cea/saclay dsm/i...
  • 67 篇 department of ph...
  • 66 篇 national researc...
  • 65 篇 department of ph...
  • 65 篇 kobayashi-maskaw...
  • 65 篇 high energy phys...
  • 65 篇 department of ph...

作者

  • 131 篇 叶鹏
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 m.white
  • 85 篇 p.de jong
  • 82 篇 v.i.belousov
  • 78 篇 v.burkert
  • 76 篇 y.hayato
  • 76 篇 a.v.gritsan
  • 62 篇 a.gurtu
  • 61 篇 kavli ipmu
  • 61 篇 l.pape
  • 61 篇 m.carena
  • 59 篇 a.masoni
  • 41 篇 s.rolli
  • 34 篇 王铮
  • 34 篇 a.d.martin
  • 31 篇 b.heltsley
  • 27 篇 s.r.klein

语言

  • 19,152 篇 中文
  • 15,808 篇 英文
检索条件"作者=marston n a"
34965 条 记 录,以下是4991-5000 订阅
排序:
Catharanthus roseus:a natural source for the synthesis of silver nanoparticles
收藏 引用
Asian Pacific Journal of Tropical Biomedicine 2011年 第4期1卷 270-274页
作者: Mukunthan KS Elumalai EK Trupti n Patel V Ramachandra Murty Department of Biotechnology Manipal Institute of TechnologyManipal UniversityManipal- 576104KarnatakaIndia School of BioSciences and Technology VITVellore-632 014TamilnaduIndia P.G.and Research Department of Zoology Voorhees CollegeVellore-632 001TamilnaduIndia
Objective:To develop a simple rapid procedure for bioreduction of silver nanoparticles(AgnPs)using aqueous leaves extracts of Catharanthus roseus(***).Methods:Characterization were determined by using UV-Vis spectroph... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Influence of Rice Genotypes on Folding and Spinning Behaviour of Leaffolder(Cnaphalocrocis medinalis) and Its Interaction with Leaf Damage
收藏 引用
Rice science 2013年 第6期20卷 442-450页
作者: M.PUnITHAVALLI n.M.MUTHUKRISHnAn M.BALAJI RAJKUMAR Sugarcane Breeding Institute Agricultural College & Research Institute Central Institute of Subtropical Horticulture
Folding and spinning behavior of Cnaphalocrocis medinalis (Guenee) (Lepidoptera: Pyralidae) in different categories of rice genotypes viz., resistant, susceptible, hybrid, scented, popular and wild rice genotypes... 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
The impact of anti-epidemic measures against coronavirus disease 2019 (COVID-19) on the seasonal influenza epidemic
收藏 引用
Chinese Medical Journal 2021年 第7期134卷 879-880页
作者: Tatyana n.Ilyicheva Vadim nGureyev Vector State Research Center of Virology and Biotechnology Koltsovo 630559Russia Department of natural Sciences Novosibirsk State UniversityNovosibirsk 630090Russia.
To the Editor:A new type of coronavirus—severe acute respiratory syndrome coronavirus 2 causing coronavirus disease 2019(COVID-19)emerged in 2019.[1]On March 11,2020,World Health Organization(WHO)Director-General dec... 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
Further the liquid biopsy:Gathering pieces of the puzzle of genometastasis theory
收藏 引用
World Journal of Clinical Oncology 2017年 第5期8卷 378-388页
作者: Ana García-Casas Dolores C García-Olmo Damián García-Olmo Universidad Complutense de Madrid Centre de Recerca Experimental Biomèdica Aplicada(CREBA) IRBLLEIDA Department of Surgery Universidad Autónoma de MadridInstituto de Investigación SanitariaFundación Jiménez Díaz
Metastasis is the major cause of mortality in cancer disease and still constitutes one of the most controversial mechanism,not yet fully *** is almost beyond doubt is that circulatory system is crucial for cancer *** ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Multi-exponential model to describe pressure-dependent P-and S-wave velocities and its use to estimate the crack aspect ratio
收藏 引用
Journal of Rock Mechanics and Geotechnical Engineering 2022年 第2期14卷 385-395页
作者: Mihály Dobróka norbert Péter Szabó nde Edit Dobróka Mátyás Krisztián Baracza Department of Geophysics University of MiskolcMiskolc-Egyetemváros3515Hungary MTA-ME Geoengineering Research Group University of MiskolcMiskolc-Egyetemváros3515Hungary Research Institute of Applied Earth Sciences University of MiskolcMiskolc-Egyetemváros3515Hungary
We present new quantitative model describing the pressure dependence of acoustic P-and S-wave *** that a variety of individual mechanisms or defects(such as cracks,pore collapse and grain crushing)can contribute to th... 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
共聚物-溶剂体系的气液平衡:新UnIFAC基团热力学模型与实验研究(英文)
收藏 引用
Chinese Journal of Chemical Engineering 2008年 第4期16卷 605-611页
作者: Rogério A.G. Sé Martín Aznar School of Chemical Engineering State University of CampinasUNICAMP P.O. Box 606613081-970Campinas-SP Brazil
Vapor-liquid equilibrium (VLE) data for copolymer solutions are necessary for several chemical processes. However, VLE data for copolymer solutions in the published report are rare. In this study, experimental VLE dat... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
歌唱艺术
歌唱艺术
收藏 引用
作者: n.K.那查连科
来源: 南通市图书馆图书 评论
Machine Learning Based Depression,Anxiety,and Stress Predictive Model During COVID-19 Crisis
收藏 引用
Computers, Materials & Continua 2022年 第3期70卷 5803-5820页
作者: Fahd n.Al-Wesabi Hadeel Alsolai Anwer Mustafa Hilal Manar Ahmed Hamza Mesfer Al Duhayyim noha negm Department of Computer Science King Khalid UniversityMuhayel AseerSaudi Arabia Faculty of Computer and IT Sana’a UniversitySana’aYemen Department of Information Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversitySaudi Arabia Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlKharjSaudi Arabia Department of natural and Applied Sciences College of Community-AflajPrince Sattam bin Abdulaziz UniversitySaudi Arabia Computer Science Department King Khaled UniversityKSA Faculty of Science Mathematics and Computer Science DepartmentMenoufia UniversityEgypt
Corona Virus Disease-2019(COVID-19)was reported at first in Wuhan city,China by December *** Health Organization(WHO)declared COVID-19 as a pandemic i.e.,global health crisis onMarch 11,*** outbreak of COVID-19 pandem... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Deep Residual network Based on Image Priors for Single Image Super Resolution in FFA Images
收藏 引用
Computer Modeling in Engineering & Sciences 2020年 第10期125卷 125-143页
作者: G.R.Hemalakshmi D.Santhi V.R.S.Mani A.Geetha n.B.Prakash national Engineering College Kovilpatti628503India
Diabetic retinopathy,aged macular degeneration,glaucoma *** widely prevalent ocular pathologies which are irreversible at advanced *** learning based automated detection of these pathologies facilitate timely clinical... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Electro-Chemical Impedance Spectral (EIS) Study of Patinated Bronze Corrosion in Sulfate Media: Experimental Design Approach
收藏 引用
Journal of Materials Science and Chemical Engineering 2017年 第10期5卷 44-54页
作者: Aymen Chaabani Safa Aouadi nébil Souissi X. Ramón nóvoa Preparatory Institute For Engineering Studies El Manar University of Tunis El Manar Farhat Hached University Campus of El Manar Tunisia Faculty of Sciences of Bizerte University of Carthage Jarzouna Tunisia EnCOMAT Group E.E.I. University of Vigo Vigo Spain
The aim of the present investigation was to model the experimental conditions of tin bronze patination using full factorial experimental design. In this sense, a full factorial design approach was developed to model t... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论