咨询与建议

限定检索结果

文献类型

  • 122,300 篇 期刊文献
  • 7,320 篇 会议
  • 6,353 册 图书
  • 173 篇 学位论文
  • 46 篇 报纸
  • 2 篇 多媒体

馆藏范围

  • 133,358 篇 电子文献
  • 2,952 种 纸本馆藏

日期分布

学科分类号

  • 54,625 篇 工学
    • 14,255 篇 材料科学与工程(可...
    • 7,775 篇 化学工程与技术
    • 6,356 篇 机械工程
    • 6,020 篇 生物医学工程(可授...
    • 5,031 篇 计算机科学与技术...
    • 4,820 篇 电子科学与技术(可...
    • 4,278 篇 力学(可授工学、理...
    • 4,268 篇 动力工程及工程热...
    • 4,220 篇 电气工程
    • 3,953 篇 地质资源与地质工...
    • 3,707 篇 环境科学与工程(可...
    • 3,359 篇 冶金工程
    • 3,202 篇 水利工程
    • 2,891 篇 控制科学与工程
    • 2,771 篇 建筑学
  • 45,682 篇 医学
    • 38,347 篇 临床医学
    • 5,551 篇 基础医学(可授医学...
    • 5,353 篇 医学技术(可授医学...
    • 3,836 篇 公共卫生与预防医...
    • 3,190 篇 中西医结合
  • 34,729 篇 理学
    • 9,529 篇 化学
    • 9,226 篇 物理学
    • 7,797 篇 生物学
    • 5,296 篇 数学
    • 3,839 篇 地质学
    • 3,574 篇 地球物理学
    • 3,235 篇 天文学
  • 12,385 篇 农学
    • 4,006 篇 作物学
    • 2,847 篇 畜牧学
  • 5,872 篇 管理学
  • 3,885 篇 经济学
    • 3,394 篇 应用经济学
  • 3,671 篇 教育学
  • 2,537 篇 法学
  • 2,290 篇 文学
  • 972 篇 艺术学
  • 961 篇 历史学
  • 818 篇 哲学
  • 240 篇 军事学

主题

  • 1,127 篇 ct
  • 983 篇 mri
  • 924 篇 美国
  • 705 篇 病人
  • 699 篇 患者
  • 584 篇 and
  • 574 篇 of
  • 478 篇 mr
  • 464 篇 cancer
  • 319 篇 北美洲
  • 312 篇 美利坚合众国
  • 281 篇 治疗
  • 273 篇 analysis
  • 250 篇 应用
  • 228 篇 中国
  • 219 篇 设计
  • 205 篇 诊断
  • 198 篇 model
  • 195 篇 disease
  • 182 篇 dna

机构

  • 341 篇 北京大学
  • 250 篇 同济医科大学附属...
  • 189 篇 清华大学
  • 182 篇 浙江大学
  • 95 篇 华中科技大学
  • 94 篇 美国加州大学
  • 92 篇 华中科技大学同济...
  • 84 篇 中国地质大学
  • 73 篇 中国科学院大学
  • 72 篇 南京大学
  • 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...
  • 66 篇 germany
  • 65 篇 national researc...
  • 65 篇 institut fur the...
  • 64 篇 dept.of physics ...
  • 63 篇 香港理工大学

作者

  • 320 篇 叶鹏
  • 232 篇 m.k
  • 165 篇 郭俊
  • 161 篇 刘莉
  • 94 篇 唐光健
  • 90 篇 朱国栋
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 80 篇 m.white
  • 66 篇 刘凯
  • 64 篇 郭战宏
  • 57 篇 李长根
  • 57 篇 alan
  • 54 篇 王铮
  • 53 篇 t.gries
  • 53 篇 余英豪
  • 50 篇 马超
  • 48 篇 china
  • 44 篇 杜媛

语言

  • 84,230 篇 中文
  • 51,887 篇 英文
  • 40 篇 其他
  • 2 篇 法文
  • 2 篇 日文
检索条件"作者=Alan M.g.nzalez-Suarez"
136194 条 记 录,以下是41-50 订阅
排序:
Exact solutions for magnetohydrodynamic nanofluids flow and heat transfer over a permeable axisymmetric radially stretching/shrinking sheet
收藏 引用
Chinese Physics B 2024年 第2期33卷 108-114页
作者: U.S.mahabaleshwar g.P.Vanitha L.m.Pérez Emad H.Aly I.Pop Department of Studies in mathematics Davangere UniversityShivagangothriDavangereIndia Departamento de F´ısica FACIUniversidad de Tarapac´aCasilla 7DAricaChile Department of mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Department of mathematics Babes-Bolyai University400084 Cluj-NapocaRomania
We report on the magnetohydrodynamic impact on the axisymmetric flow of Al_(2)O_(3)/Cu nanoparticles suspended in H_(2)O past a stretched/shrinked *** the use of partial differential equations and the corresponding 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
Finding biomarkers of experience in animals
收藏 引用
Journal of Animal Science and Biotechnology 2024年 第3期15卷 925-944页
作者: Sarah Babington alan J.Tilbrook Shane K.maloney Jill N.Fernandes Tamsyn m.Crowley Luoyang Ding Archa H.Fox Song Zhang Elise A.Kho Daniel Cozzolino Timothy J.mahony Dominique Blache School of Agriculture and Environment The University of Western AustraliaCrawleyWA 6009Australia Centre for Animal Science The Queensland Alliance for Agriculture and Food InnovationThe University of QueenslandSt LuciaQLD 4072Australia School of Veterinary Science The University of QueenslandGattonQLD 4343Australia School of Human Sciences The University of Western AustraliaCrawleyWA 6009Australia School of medicine Deakin UniversityGeelongVIC 3217Australia Poultry Hub Australia University of New EnglandArmidaleNSW 2350Australia College of Animal Science and Technology Yangzhou UniversityYangzhou 225009China Centre for Nutrition and Food Sciences The Queensland Alliance for Agriculture and Food InnovationThe University of QueenslandSt LuciaQLD 4072Australia
At a time when there is a growing public interest in animal welfare,it is critical to have objective means to assess the way that an animal experiences a *** is critical to ensure appropriate animal welfare *** behavi... 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
Enhancing Defect-Induced Dipole Polarization Strategy of SiC@moO_(3)Nanocomposite Towards Electromagnetic Wave Absorption
收藏 引用
Nano-micro Letters 2024年 第12期16卷 406-426页
作者: Ting Wang Wenxin Zhao Yukun miao Anguo Cui Chuanhui gao Chang Wang Liying Yuan Zhongning Tian alan meng Zhenjiang Li meng Zhang College of Chemical Engineering Qingdao University of Science and TechnologyQingdao 266042People’s Republic of China College of materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042People’s Republic of China Shandong Engineering Laboratory for Preparation and Application of High-Performance Carbon-materials College of Electromechanical EngineeringQingdao University of Science and TechnologyQingdao 266061People’s Republic of China Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science MOEShandong Key Laboratory of Biochemical AnalysisCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042People’s Republic of China
Defect engineering in transition metal oxides semiconductors(TmOs)is attracting considerable interest due to its potential to enhance conductivity by intentionally introducing defects that modulate the electronic stru... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Bulking Up the Bay-Position Substituents Enables Enhanced Selectivity of C_(s)‑Symmetric Boron Subphthalocyanine−Subnaphthalocyanine Hybrids
收藏 引用
Precision Chemistry 2024年 第4期2卷 161-181页
作者: Nina F.Farac alan J.Lough Timothy P.Bender Department of Chemical Engineering and Applied Chemistry University of TorontoTorontoOntario M5S 3E5Canada Department of Chemistry University of TorontoTorontoOntario M5S 3H6Canada Department of materials Science and Engineering University of TorontoTorontoOntario M5S 3E4Canada Department of mechanical and Industrial Engineering University of TorontoTorontoOntario M5S 3G8Canada
The precise synthesis of subporphyrinoid hybrids withπ-expanded topologies and unique material properties plays a promising role in the design of functional ***,selective,and controllable routes to boron subphthalocy... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
In-situ construction of grass-like hybrid architecture responsible for extraordinary corrosion performance: Experimental and theoretical approach
收藏 引用
Nano materials Science 2024年 第1期6卷 44-59页
作者: T.Suhartono F.Hazmatulhaq Y.Sheng A.Chaouiki m.P.Kamil Y.g.Ko materials Electrochemistry group School of Materials Science and EngineeringYeungnam UniversityGyeongsan38541Republic of Korea Research Center for Advanced materials National Research and Innovation Agency(BRIN)South TangerangBanten15314Indonesia
Despite the engineering potential by the co-existence of inorganic and organic substances to protect vulnerable metallic materials from corrosive environments,both their interaction and in-situ formation mechanism to ... 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
Prediction of the undrained shear strength of remolded soil with non-linear regression,fuzzy logic,and artificial neural network
收藏 引用
Journal of mountain Science 2024年 第9期21卷 3108-3122页
作者: YÜNKÜL Kaan KARAÇOR Fatih gÜRBÜZ Ayhan BUDAK TahsinÖmür Department of Civil Engineering Faculty of Engineering and ArchitectureTokat Gaziosmanpaşa UniversityTokat 60100Türkiye Department of Civil Engineering Faculty of Engineering and ArchitectureKafkas UniversityKars 36000Türkiye Department of Civil Engineering Faculty of EngineeringGazi UniversityAnkara 06570Türkiye ministry of Youth and Sports Ankara 06090Türkiye
This study aims to predict the undrained shear strength of remolded soil samples using non-linear regression analyses,fuzzy logic,and artificial neural network modeling.A total of 1306 undrained shear strength results... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Tensile Strain Capacity Prediction of Engineered Cementitious Composites (ECC) Using Soft Computing Techniques
收藏 引用
Computer modeling in Engineering & Sciences 2024年 第3期138卷 2925-2954页
作者: Rabar H.Faraj Hemn Unis Ahmed Hardi Saadullah Fathullah alan Saeed Abdulrahman Farid Abed Civil Engineering Department University of HalabjaHalabjaIraq University of Sulaimani College of EngineeringCivil Engineering DepartmentSulaimaniIraq Civil Engineering Department Komar University of Science and TechnologySulaimaniIraq Department of Engineering Kurdistan Institution for Strategic Studies and Scientific ResearchesSulaimaniIraq Department of Civil Engineering American University of SharjahSharjah26666UAE
Plain concrete is strong in compression but brittle in tension,having a low tensile strain capacity that can significantly degrade the long-term performance of concrete structures,even when steel reinforcing is *** or... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Tumor necrosis factor-alpha, transforming growth factor-beta, degree of lower urinary tract symptoms as predictors of erectile dysfunction in benign prostatic hyperplasia patients
收藏 引用
Asian Journal of Urology 2024年 第2期11卷 280-285页
作者: gede W.K.Duarsa Yeremia g.Kusumah Ronald Sugianto Pande m.W.Tirtayasa Tjokorda g.B.mahadewa Department of Urology Faculty of MedicineUniversitas UdayanaProf.Dr.I.G.N.G Ngoerah General HospitalBaliIndonesia Department of general Surgery Faculty of MedicineUniversitas UdayanaProf.Dr.I.G.N.G Ngoerah General HospitalBaliIndonesia medical Doctor Study Program Faculty of MedicineUniversitas UdayanaBaliIndonesia Department of Urology Faculty of MedicineUniversitas UdayanaUniversitas Udayana Teaching HospitalBaliIndonesia Department of Neurosurgery Faculty of MedicineUniversitas UdayanaProf.Dr.I.G.N.G Ngoerah General HospitalBaliIndonesia
Objective: Erectile dysfunction (ED) is a condition of insufficient penile erection, consistently or recurrently, for sexual activity. Tumor necrosis factor-alpha (TNF-α) induces transforming growth factor-beta (TgF-... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Nitrogen mineralization in the oldest climax communities in the eastern mediterranean region
收藏 引用
Journal of Forestry Research 2024年 第1期35卷 213-228页
作者: Fatma Selcen Sakar gürcan güleryüz Department of Biology Section Ecology GörükleGraduate School of Natural and Applied ScienceUniversity of Bursa Uludağ16059 NilüferBursaTurkey Department of Biology Section Ecology GörükleFaculty of Science and ArtsUniversity of Bursa Uludağ16059 NilüferBursaTurkey
In this study,we investigated how tree species affect N mineralization in connection to some soil properties and seconder metabolite levels of litter,in the soil of the old-est native forest *** the oldest pure commun... 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
Nutritional epigenetics education improves diet and attitude of parents of children with autism or attention deficit/hyperactivity disorder
收藏 引用
World Journal of Psychiatry 2024年 第1期14卷 159-178页
作者: Renee J Dufault Katherine m Adler David O Carpenter Steven g gilbert Raquel A Crider College of graduate Health Studies A.T.Still UniversityKirksvilleMO 63501United States Department of Research Food Ingredient and Health Research InstituteNaalehuHI 96772United States Department of Health Sciences University of New HavenWest HavenCT 06516United States Institute for Health and the Environment School of Public HealthState University of New YorkAlbanyNY 12222United States Department of Research Institute of Neurotoxicology and Neurological DisordersSeattleWA 98105United States Department of Statistics Food Ingredient and Health Research InstituteNaalehuHI 96772United States
BACKgROUND Unhealthy maternal diet leads to heavy metal exposures from the consumption of ultra-processed foods that may impact gene behavior across generations,creating conditions for the neurodevelopmental disorders... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论