咨询与建议

限定检索结果

文献类型

  • 12,443 篇 期刊文献
  • 874 篇 会议
  • 563 册 图书
  • 4 篇 学位论文

馆藏范围

  • 13,669 篇 电子文献
  • 240 种 纸本馆藏

日期分布

学科分类号

  • 6,130 篇 工学
    • 1,991 篇 材料科学与工程(可...
    • 1,167 篇 生物医学工程(可授...
    • 1,083 篇 化学工程与技术
    • 754 篇 电子科学与技术(可...
    • 701 篇 力学(可授工学、理...
    • 700 篇 机械工程
    • 678 篇 电气工程
    • 609 篇 动力工程及工程热...
    • 521 篇 计算机科学与技术...
    • 471 篇 环境科学与工程(可...
    • 461 篇 冶金工程
    • 435 篇 核科学与技术
    • 383 篇 地质资源与地质工...
    • 346 篇 控制科学与工程
    • 342 篇 仪器科学与技术
    • 314 篇 水利工程
  • 5,775 篇 医学
    • 5,007 篇 临床医学
    • 942 篇 医学技术(可授医学...
    • 931 篇 基础医学(可授医学...
    • 498 篇 公共卫生与预防医...
    • 466 篇 中西医结合
  • 4,864 篇 理学
    • 1,660 篇 物理学
    • 1,578 篇 化学
    • 1,086 篇 生物学
    • 641 篇 数学
    • 578 篇 地球物理学
    • 576 篇 天文学
    • 536 篇 地质学
  • 1,412 篇 农学
    • 569 篇 作物学
    • 403 篇 畜牧学
  • 468 篇 管理学
  • 359 篇 经济学
  • 208 篇 教育学
  • 136 篇 法学
  • 94 篇 文学
  • 57 篇 历史学
  • 33 篇 艺术学
  • 22 篇 哲学
  • 13 篇 军事学

主题

  • 128 篇 ct
  • 109 篇 mri
  • 77 篇 患者
  • 58 篇 pet
  • 44 篇 analysis
  • 35 篇 病人
  • 31 篇 properties
  • 31 篇 基因突变
  • 29 篇 deep learning
  • 29 篇 magnetic
  • 29 篇 mr
  • 28 篇 diabetes
  • 28 篇 corrosion
  • 28 篇 children
  • 27 篇 前列腺癌
  • 26 篇 acid
  • 26 篇 mortality
  • 26 篇 dna
  • 25 篇 安慰剂对照
  • 25 篇 pet/ct

机构

  • 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...
  • 67 篇 nstitucio catala...
  • 67 篇 department of ph...
  • 67 篇 school of physic...
  • 67 篇 ludwig-maximilia...
  • 67 篇 cea/saclay dsm/i...
  • 67 篇 同济医科大学附属...
  • 66 篇 national researc...
  • 66 篇 department of ph...
  • 66 篇 department of ph...
  • 66 篇 kobayashi-maskaw...
  • 66 篇 high energy phys...

作者

  • 89 篇 v.i.belousov
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 m.white
  • 85 篇 p.de jong
  • 85 篇 v.burkert
  • 83 篇 y.hayato
  • 82 篇 a.v.gritsan
  • 80 篇 a.gurtu
  • 80 篇 m.carena
  • 79 篇 a.masoni
  • 74 篇 s.rolli
  • 72 篇 s.r.klein
  • 71 篇 a.d.martin
  • 71 篇 b.heltsley
  • 69 篇 d.h.weinberg
  • 68 篇 u.f.katz
  • 66 篇 kavli ipmu
  • 66 篇 l.pape

语言

  • 7,190 篇 中文
  • 6,693 篇 英文
检索条件"作者=M.Af.f."
13884 条 记 录,以下是61-70 订阅
排序:
Bio-fertilizer Improved Oil Palm Seedling Growth
收藏 引用
American Journal of Plant Sciences 2024年 第7期15卷 455-466页
作者: Gabriel Ddamulira f. masika A. Asiimwe L. Zubairi m. Otuba Horticulture & Oil Palm Program National Crops Resources Research Institute Kampala Uganda
In most farming systems newly introduced commercial fertilizers to be accepted, adopted and used by farmers, their effectiveness and appropriate application rates must be exhibited. This study was conducted to validat... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
microbial,immune and antioxidant responses of Nile tilapia with dietary nano-curcumin supplements under chronic low temperatures
收藏 引用
Aquaculture and fisheries 2024年 第1期9卷 57-65页
作者: mohammed f.El Basuini mohamed A.A.Zaki Abdelaziz m.El-Hais mohamed G.Elhanafy Emad H.El-Bilawy Amr I.Zaineldin mohamed f.A.Abdel-Aziz Ibrahim A.Abouelsaad Ibrahim TEl-Ratel Kumbukani mzengereza Ronick S.Shadrack Islam I.Teiba faculty of Agriculture Tanta UniversityTanta31527Egypt King Salman International University South Sinai46618Egypt faculty of Agriculture Alexandria UniversityAlexandria21526Egypt Animal Health Research Institute(AHRI-DOKI) Agriculture Research CenterGiza12619Egypt fish Rearing Lab. Aquaculture DivisionNational Institute of Oceanography and FisheriesAlexandria21556Egypt Horticulture Department Faculty of AgricultureDamanhour UniversityDamanhur22511Egypt Department of Poultry Production Faculty of AgricultureDamietta UniversityDamietta34517Egypt Laboratory of Aquatic Animal Nutrition Faculty of FisheriesKagoshima UniversityKagoshima890-0065Japan Department of Aquatic and fisheries Science Mzuzu UniversityMzuzuPrivate Bag 201Malawi faculty of Aquaculture and marine fisheries Arish UniversityArish45516Egypt
A 56-day feeding period was performed to investigate the possible impacts of dietary nano curcumin(0,50,100,150,and 200 ppm)on the growth,nutrient utilization,non-specific immune parameters,antioxidants in Nile tilapi... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
There is more to the knee joint than just the quadriceps:A systematic review with meta-analysis and evidence gap map of hamstring strength,flexibility,and morphology in individuals with gradual-onset knee disorders
收藏 引用
Journal of Sport and Health Science 2024年 第4期13卷 521-536页
作者: Helder S.Lopes marina C.Waiteman Liliam B.Priore Neal R.Glaviano David m.Bazett-Jones Ronaldo V.Briani fabio m.Azevedo School of Science and Technology Physical Therapy DepartmentSao Paulo State University(UNESP)Presidente Prudente 19060-900Brazil Department of Kinesiology College of AgricultureHealth and Natural ResourcesUniversity of ConnecticutStorrsCT 06269USA School of Exercise and Rehabilitation Sciences College of Health and Human ServicesUniversity of ToledoToledoOH 43606USA
Background:Impairments in hamstring strength,flexibility,and morphology have been associated with altered knee biomechanics,pain,and *** the presence of these impairments in individuals with gradual-onset knee disorde... 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
A Rare Case of Aortic Valve Endocarditis and Acute meningitis Due to Haemophilus influenzae
收藏 引用
Case Reports in Clinical medicine 2024年 第6期13卷 207-211页
作者: Zachary m. Visinoni Justin D. Tse Christopher f. Pease Department of Graduate medical Education Internal medicine Residency Sutter Roseville Medical Center Roseville USA Sutter medical Group Roseville USA
HACEK organisms represent a rare but important group of causative pathogens in endocarditis. These bacteria have historically been associated with culture-negative endocarditis;however, modern laboratory techniques ha... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Radioisotope production using lasers:from basic science to applications
收藏 引用
matter and Radiation at Extremes 2024年 第3期9卷 31-44页
作者: m.R.D.Rodrigues A.Bonasera m.Scisciò J.A.Pérez-Hernández m.Ehret f.filippi P.L.Andreoli m.Huault H.Larreur D.Singappuli D.molloy D.Raffestin m.Alonzo G.G.Rapisarda D.Lattuada G.L.Guardo C.Verona fe.Consoli G.Petringa A.mcNamee m.La Cognata S.Palmerini T.Carriere m.Cipriani G.Di Giorgio G.Cristofari R.De Angelis G.A.P.Cirrone D.margarone L.Giuffrida D.Batani P.Nicolai K.Batani R.Lera L.Volpe D.Giulietti S.Agarwal m.Krupka S.Singh fa.Consoli Cyclotron Institute Texas A&M UniversityCollege StationTexas 77840USA Laboratori Nazionali del Sud Istituto Nazionale di Fisica Nucleare(LNS-INFN)CataniaItaly ENEA Fusion and Technologies for Nuclear Safety and Security Department-CFrascatiItaly Centro de Láseres Pulsados(clpu) VillamayorSpain Universidad de Salamanca SalamancaSpain Centre Lasers Intenses et Applications(CELIA) Universitéde BordeauxCNRSCEATalenceFrance HB11 Energy Holdings Pty FreshwaterNew South WalesAustralia School of mathematics and Physics Queen’s University BelfastBelfastUnited Kingdom Dipartimento di fisica e Astronomia“E.majorana ”Università di CataniaCataniaItaly facoltàdi Ingegneria e Architettura Universitàdegli Studi di Enna“Kore”EnnaItaly Dipartimento di Ingegneria Industriale Universitàdi Roma“Tor Vergata”RomaItaly Dipartimento di fisica e Geologia Universitàdegli Studi di PerugiaPerugiaItaly Istituto Nazionale di fisica Nucleare Sezione di PerugiaPerugiaItaly ELI Beamlines facility the Extreme Light Infrastructure ERICDolni BrezanyCzech Republic ETSIA Universidad Politécnica de MadridMadridSpain Dipartimento fisica “E.Fermi”Universitàdi Pisa and INFNPisaItaly fZU–Institute of Physics of Czech Academy of Sciences PragueCzech Republic Institute of Plasma Physics of Czech Academy of Sciences PragueCzech Republic
The discovery of chirped pulse amplification has led to great improvements in laser technology,enabling energetic laser beams to be compressed to pulse durations of tens of femtoseconds and focused to a few *** with e... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Collisionless shock acceleration of protons in a plasma slab produced in a gas jet by the collision of two laser-driven hydrodynamic shockwaves
收藏 引用
matter and Radiation at Extremes 2024年 第2期9卷 12-25页
作者: J.-R.marquès L.Lancia P.Loiseau P.forestier-Colleoni m.Tarisien E.Atukpor V.Bagnoud C.Brabetz f.Consoli J.Domange f.Hannachi P.Nicolaï m.Salvadori B.Zielbauer LULI CNRSÉcole PolytechniqueCEASorbonne UniversitéInstitut Polytechnique de Paris91128 Palaiseau CedexFrance CEA DAMDIF91297 Arpajon CedexFrance UniversitéParis-Saclay CEALMCE91680 Bruyères-le-ChatelFrance CENBG CNRS-IN2P3Universitéde Bordeaux33175 Gradignan CedexFrance GSI Helmholtzzentrum für Schwerionenforschung GmbH Planckstraße 164291 DarmstadtGermany University of Darmstadt Schloßgartenstr.764289 DarmstadtGermany ENEA fusion and Technologies for Nuclear Safety Department C.R.FrascatiVia Enrico Fermi 45FrascatiRomeItaly CELIA Universitéde Bordeaux–CNRS–CEA33405 TalenceFrance UniversitéParis-Saclay CEALIDYL91191 Gif-sur-YvetteFrance
We have recently proposed a new technique of plasma tailoring by laser-driven hydrodynamic shockwaves generated on both sides of a gas jet[marquès et al.,*** 28,023103(2021)].In a continuation of this numerical work,... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
The global stability and optimal control of the COVID-19 epidemic model
收藏 引用
International Journal of Biomathematics 2024年 第1期17卷 1-28页
作者: fengsheng Chien Hassan Saberi Nik mohammad Shiraziant J.f.Gomez-Aguilar School of finance and Accounting fuzhou University of International Studies and Trade fuzhou 352020 P.R.China faculty of Business City university of Macao Macao 999078P.R.China Department of mathematics and Statistics University of Neyshabur NeyshaburIran CONACyT-Tecnologico Nacional de mécico/CENIDET Interior Internado Palmira S/N Col.Palmira C.P.62490CuernavacaMorelosMérico
This paper considers stability analysis of a Susceptible-Exposed-Infected-Recovered-Virus(SEIRV)model with nonlinear incidence rates and indicates the severity and weakness of control factors for disease *** Lyapunov ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Enhancing high-temperature oxidation resistance(at 1000 °C) of nickel superalloy obtained by laser powder bed fusion via reactive electric spark treatment
收藏 引用
Transactions of Nonferrous metals Society of China 2024年
作者: S.K.mUKANOV m.I.PETRZHIK A.E.KUDRYASHOV E.A.NAUmOVA f.A.BASKOV P.A.LOGINOV E.A.LEVASHOV National University of Science and Technology mISIS
The high-temperature oxidation resistance of the nickel superalloy grown by the Laser Powder Bed fusion (LPBf) has been significantly increased as a result of in-situ formation of a thermal barrier layer (α-Al2O3+ Ca...
来源: 同方期刊数据库 同方期刊数据库 评论
A novel diagnostic gene region for distinguishing between two pest fruit flies:Bactrocera tryoni(froggatt)and Bactrocera neohumeralis(Hardy)(Diptera:Tephritidae)
收藏 引用
Insect Science 2024年 第4期31卷 1285-1295页
作者: melissa L.Starkie Elizabeth V.fowler Alexander m.Piper Xiaocheng Zhu Pauline Wyatt David Gopurenko matt N.Krosch francesca Strutt Karen f.Armstrong Hamish Patrick mark K.Schutze mark J.Blacket Department of Agriculture and fisheries BiosecurityBrisbaneQueenslandAustralia Agriculture Victoria AgriBioBundooraVictoriaAustralia Department of Primary Industries Wagga Wagga Agricultural InstituteWagga WaggaNew South WalesAustralia forensic Services Group Queensland Police ServiceBrisbaneQueenslandAustralia Department of Pest-management and Conservation Lincoln UniversityLincolnNew Zealand Better Border Biosecurity(B3 B3nz.org.nz)LincolnNew Zealand
Bactrocera tryoni and Bactrocera neohumeralis are morphologically similar sibling pest fruit fly species that possess different biological attributes,geographic distributions,and host *** need to differentiate between... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
microstructure evolution and shape memory behaviors of Ni_(47)Ti_(44)Nb_(9)alloy subjected to multistep thermomechanical loading with different prestrain levels
收藏 引用
Journal of materials Science & Technology 2024年 第4期171卷 80-93页
作者: Y.H.Zhang H.Li Z.W.Yang X.Liu Q.f.Gu State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Shaanxi Key Laboratory of High-Performance Precision forming Technology and Equipment Northwestern Polytechnical UniversityXi’an 710072China
Ni_(47)Ti_(44)Nb_(9)shape memory alloy(SmA)is a promising material in the aerospace field due to its wide transformation *** application of shape memory effect depends on multistep thermomechan-ical loading,viz.,low-t... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论