咨询与建议

限定检索结果

文献类型

  • 48,326 篇 期刊文献
  • 3,753 篇 会议
  • 3,417 册 图书
  • 40 篇 学位论文
  • 12 篇 报纸

馆藏范围

  • 54,053 篇 电子文献
  • 1,555 种 纸本馆藏

日期分布

学科分类号

  • 21,514 篇 工学
    • 4,781 篇 材料科学与工程(可...
    • 2,407 篇 化学工程与技术
    • 2,235 篇 生物医学工程(可授...
    • 1,695 篇 机械工程
    • 1,494 篇 电子科学与技术(可...
    • 1,170 篇 动力工程及工程热...
    • 983 篇 计算机科学与技术...
    • 922 篇 电气工程
    • 904 篇 地质资源与地质工...
    • 883 篇 仪器科学与技术
    • 768 篇 光学工程
    • 737 篇 水利工程
    • 708 篇 力学(可授工学、理...
    • 671 篇 控制科学与工程
  • 16,366 篇 医学
    • 13,336 篇 临床医学
    • 2,392 篇 医学技术(可授医学...
    • 1,784 篇 基础医学(可授医学...
    • 1,353 篇 中西医结合
    • 1,002 篇 公共卫生与预防医...
    • 785 篇 药学(可授医学、理...
  • 9,357 篇 理学
    • 2,027 篇 物理学
    • 1,745 篇 化学
    • 1,281 篇 数学
    • 1,232 篇 生物学
    • 977 篇 地质学
  • 4,245 篇 农学
    • 1,065 篇 畜牧学
    • 956 篇 作物学
  • 2,204 篇 管理学
    • 957 篇 管理科学与工程(可...
  • 1,453 篇 经济学
    • 1,263 篇 应用经济学
  • 1,286 篇 教育学
    • 974 篇 教育学
  • 1,032 篇 文学
  • 958 篇 法学
  • 461 篇 历史学
  • 383 篇 哲学
  • 365 篇 艺术学
  • 82 篇 军事学

主题

  • 568 篇 ct
  • 384 篇 mri
  • 310 篇 美国
  • 293 篇 患者
  • 228 篇 病人
  • 183 篇 mr
  • 125 篇 of
  • 113 篇 analysis
  • 108 篇 北美洲
  • 101 篇 日本
  • 86 篇 美利坚合众国
  • 84 篇 中国
  • 81 篇 治疗
  • 70 篇 方程
  • 66 篇 diabetes
  • 65 篇 pet
  • 65 篇 思维形式
  • 64 篇 and
  • 64 篇 microstructure
  • 61 篇 cancer

机构

  • 200 篇 同济医科大学附属...
  • 110 篇 北京大学
  • 109 篇 南京大学
  • 101 篇 香港理工大学
  • 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 ...
  • 67 篇 compas group ins...
  • 67 篇 rudolf peierls c...
  • 66 篇 national researc...
  • 66 篇 nstitucio catala...
  • 66 篇 department of ph...
  • 66 篇 school of physic...
  • 66 篇 ludwig-maximilia...
  • 65 篇 cea/saclay dsm/i...
  • 64 篇 department of ph...

作者

  • 134 篇 叶鹏
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 m.white
  • 84 篇 p.de jong
  • 84 篇 v.i.belousov
  • 73 篇 v.burkert
  • 60 篇 h.wang
  • 60 篇 y.hayato
  • 58 篇 kavli ipmu
  • 57 篇 l.pape
  • 52 篇 a.v.gritsan
  • 50 篇 china
  • 38 篇 刘闯
  • 33 篇 王铮
  • 31 篇 a.gurtu
  • 31 篇 刘莉
  • 30 篇 m.carena
  • 28 篇 朱国栋

语言

  • 37,898 篇 中文
  • 17,634 篇 英文
检索条件"作者=Matthias h Morgalla"
55548 条 记 录,以下是4991-5000 订阅
排序:
Application of Metaheuristic Algorithms for Optimizing Longitudinal Square Porous Fins
收藏 引用
Computers, Materials & Continua 2021年 第4期67卷 73-87页
作者: Samer h.Atawneh Waqar A.Khan Nawaf N.hamadneh Adeeb M.Alhomoud College of Computing and Informatics Saudi Electronic UniversityRiyadh11673Saudi Arabia Department of Mechanical Engineering College of EngineeringPrince Mohammad bin Fahd UniversityAl Khobar31952Saudi Arabia Department of Basic Sciences College of Science and Theoretical StudiesSaudi Electronic UniversityRiyadh11673Saudi Arabia
The objectives of this study involve the optimization of longitudinal porous fins of square cross-section using metaheuristic algorithms.A generalized nonlinear ordinary differential equation is derived using Darcy an... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Analyzing the Impact of Blockchain Models for Securing Intelligent Logistics through Unified Computational Techniques
收藏 引用
Computers, Materials & Continua 2023年 第12期77卷 3943-3968页
作者: Mohammed S.Alsaqer Majid h.Alsulami Rami N.Alkhawaji Abdulellah A.Alaboudi College of Computer Science King Khalid UniversityAbha62529Saudi Arabia Applied College Shaqra UniversityShaqra11961Saudi Arabia University College of Umluj University of TabukUmluj48335Saudi Arabia
Blockchain technology has revolutionized conventional *** success of blockchain can be attributed to its distributed ledger characteristic,which secures every record inside the ledger using cryptography rules,making i... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Root Exudation of Organic Acids of herbaceous Pioneer Plants and Their Growth in Sterile and Non-Sterile Nutrient-Poor,Sandy Soils from Post-Mining Sites
收藏 引用
Pedosphere 2019年 第1期29卷 34-44页
作者: Katja BOLDT-BURISCh Bernd Uwe SChNEIDER M.Anne NAETh Reinhard F.hTTL Chair of Soil Protection and Recultivation Brandenburg University of Technology helmholtz Centre Potsdam-German Research Centre for Geosciences Department of Renewable Resources University of Alberta
Nutrient-poor, sandy soils form the prevailing substrate at post-mining sites of the Lusatian region(Brandenburg, Germany) and present a challenge for vegetation development. We studied the organic acid quantity and c... 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
Toward Optimal Cost-Energy Management Green Framework for Sustainable Future Wireless Networks
收藏 引用
Computers, Materials & Continua 2021年 第7期68卷 1321-1339页
作者: Mohammed h.Alsharif Abu Jahid Mahmoud A.Albreem Peerapong Uthansakul Jamel Nebhen Khalid Yahya Department of Electrical Engineering College of Electronics and Information EngineeringSejong UniversitySeoul05006Korea Department of Electrical and Computer Engineering University of OttawaOttawaK1N 6N5ONCanada Department of Electronics and Communications Engineering A’Sharqiyah UniversityIbra400Oman School of Telecommunication Engineering Suranaree University of TechnologyNakhon RatchasimaThailand College of Computer Engineering and Sciences Prince Sattam bin Abdulaziz UniversityAlkharj11942Saudi Arabia Department of Mechatronics Faculty of Engineering and ArchitectureIstanbul Gelisim UniversityIstanbul34310Turkey
The design of green cellular networking according to the trafc arrivals has the capability to reduce the overall energy consumption to a cluster in a cost-effective *** cell zooming approach has appealed much attentio... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Signaling pathways involved in the inhibition of epidermal growth factor receptor by erlotinib in hepatocellular cancer
收藏 引用
World Journal of Gastroenterology 2006年 第32期12卷 5160-5167页
作者: Alexander huether Michael hpfner Andreas P Sutter Viola Baradari Detlef Schuppan hans Scherübl Charité-Universittsmedizin Berlin Campus Benjamin Franklin Medical Clinic ⅠGastroenterology/Infectious Diseases/RheumatologyBerlinGermany harvard Medical School Beth Israel Deaconess Medical Center Division of Gastroenterology and HepatologyBostonUnited States
AIM: To examine the underlying mechanisms of erlotinib-induced growth inhibition in hepatocellular carcinoma (hCC). METhODS: Erlotinib-induced alterations in gene expression were evaluated using cDNA array technol... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
α-FUZZY PAIRWISE RETRACT OF L-VALUED PAIRWISE STRATIFICATION SPACES
收藏 引用
Chinese Annals of Mathematics,Series B 2004年 第4期25卷 533-544页
作者: M.h.GhANIM F.S.MAhMOUD M.A.FATh ALLA M.A.hEBEShI Department of Mathematics Faculty of ScienceZagazig UniversityZagazigEgypt.Department of MathematicsFaculty of ScienceSohagEgypt.Department of MathematicsFaculty of ScienceSohagEgypt.Department of MathematicsFaculty of ScienceSohagEgypt.
The notion of a fuzzy retract was introduced by Rodabaugh (1981). The notion of a fuzzy pairwise retract was introduced in 2001. Some weak forms and some strong forms of α-continuous mappings were introduced in 1988 ... 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
Innate and adaptive T cells in influenza disease
收藏 引用
Frontiers of Medicine 2018年 第1期12卷 34-47页
作者: Simone Nfissing Sneha Sant Marios Koutsakos Kanta Subbarao Thi h.O. Nguyen Katherine Kedzierska Department of Microbiology and Immunology University of Melbourne at the Peter Doherty Institute for Infection and Immunity Parkville 3010 Victoria Australia World health Organisation (WhO) Collaborating Centre for Reference and Research on Influenza at the Peter Doherty Institute for Infection and Immunity Melbourne 3000 Victoria Australia
Influenza is a major global health problem, causing infections of the respiratory tract, often leading to acute pneumonia, life-threatening complications and even deaths. Over the last seven decades, vaccination strat... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
The frequency of wing damage in a migrating butterfly
收藏 引用
Insect Science 2023年 第5期30卷 1507-1517页
作者: Rabiya Korkmaz hamed Rajabi Shahab Eshghi Stanislav N.Gorb Thies h.Büscher Department of Functional Morphology and Biomechanics Zoological InstituteKiel UniversityKielGermany Division of Mechanical Engineering and Design School of EngineeringLondon South Bank UniversityLondonUK
The ability to fly is crucial for migratory ***,the accumulation of damage on the wings over time can affect survival,especially for species that travel long *** examined the frequency of irreversible wing damage in t... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
D-term Chaotic Braneworld in Supergravity Constrained by WMAP9 Data
收藏 引用
Communications in Theoretical Physics 2014年 第3期61卷 397-402页
作者: A.Safsafi M.Ferricha-Alami h.Chakir J.Inchaouh M.Bennai Laboratoire de Physique de la Matiére Condens'ee Equipe Physique Quantique et Applications Facultédes Sciences BenM’sik B.P. 7955 Université Hassan II-Mohammedia Laboratoire de Recherche Subatomique et Applications Facultédes Sciences Ben M’sik B.P. 7955 UniversitéHassanII-Mohammedia Laboratoire de Physique de la Matiére Condens'ee Equipe Physique Quantique et Applications Facultédes Sciences BenM’sik B.P. 7955 UniversitéHassan II-Mohammedia Groupement National de Physique des hautes Energies Focal Point LabUFR-PHE
We study a supergravity D-term chaotic inflationary model, in the context of the braneworld scenario, in particular we consider the Randal1-Sundrum model type 2. Using the latest release from the combination of WMAP9,... 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
Complex Velocity Potential for an Ellipse and a Circle in Translation and Rotation
收藏 引用
Communications in Nonlinear Science and Numerical Simulation 1997年 第4期2卷 252-257页
作者: R.SUN &A.T.ChWANG (Department of Mechanical Engineering,The University of hong Kong,h.K.) Department of Mechanical Engineering The University of Hong Kong Hong Kong China
This paper investigates the analytical solutions of two- dimensional Neumann- type external boundary- value problem for an ellipse and a circle in complex analysis *** transformation of harmonics between two planes is... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论