咨询与建议

限定检索结果

文献类型

  • 8,121 篇 期刊文献
  • 715 篇 会议
  • 104 册 图书
  • 8 篇 学位论文

馆藏范围

  • 8,926 篇 电子文献
  • 25 种 纸本馆藏

日期分布

学科分类号

  • 3,780 篇 工学
    • 1,244 篇 材料科学与工程(可...
    • 540 篇 化学工程与技术
    • 404 篇 生物医学工程(可授...
    • 303 篇 机械工程
    • 233 篇 电子科学与技术(可...
    • 166 篇 核科学与技术
    • 155 篇 计算机科学与技术...
    • 152 篇 地质资源与地质工...
    • 149 篇 光学工程
    • 137 篇 仪器科学与技术
    • 134 篇 动力工程及工程热...
    • 127 篇 电气工程
    • 124 篇 环境科学与工程(可...
  • 3,190 篇 医学
    • 2,599 篇 临床医学
    • 431 篇 医学技术(可授医学...
    • 315 篇 基础医学(可授医学...
    • 246 篇 中西医结合
    • 190 篇 公共卫生与预防医...
    • 142 篇 药学(可授医学、理...
  • 2,226 篇 理学
    • 629 篇 物理学
    • 410 篇 化学
    • 301 篇 生物学
    • 226 篇 地质学
    • 181 篇 数学
    • 129 篇 大气科学
  • 657 篇 农学
    • 176 篇 作物学
    • 137 篇 畜牧学
    • 128 篇 农业资源与环境
  • 277 篇 管理学
    • 162 篇 管理科学与工程(可...
  • 161 篇 经济学
    • 147 篇 应用经济学
  • 120 篇 教育学
  • 81 篇 文学
  • 51 篇 法学
  • 34 篇 历史学
  • 25 篇 艺术学
  • 15 篇 哲学
  • 13 篇 军事学

主题

  • 75 篇 mri
  • 73 篇 microstructure
  • 51 篇 病人
  • 40 篇 mechanical prope...
  • 35 篇 中国
  • 34 篇 ct
  • 30 篇 数据大百科
  • 29 篇 患者
  • 29 篇 cancer
  • 27 篇 phylogeny
  • 23 篇 analysis
  • 23 篇 properties
  • 21 篇 corrosion
  • 20 篇 rare earths
  • 19 篇 high
  • 18 篇 of
  • 17 篇 covid-19
  • 17 篇 simulation
  • 17 篇 optimization
  • 17 篇 基因突变

机构

  • 83 篇 香港理工大学
  • 69 篇 中国科学院大学
  • 68 篇 department of ph...
  • 67 篇 institute for pa...
  • 67 篇 california insti...
  • 67 篇 department of ph...
  • 67 篇 department of ph...
  • 67 篇 desy d-15735 zeu...
  • 67 篇 georg-august-uni...
  • 67 篇 bartol research ...
  • 67 篇 kavli institute ...
  • 67 篇 department of ph...
  • 67 篇 kek high energy ...
  • 67 篇 niels bohr insti...
  • 67 篇 dept.of physics ...
  • 67 篇 nikhef p.o.box 4...
  • 67 篇 ific-instituto d...
  • 67 篇 prisma cluster o...
  • 67 篇 max-planck-insti...
  • 67 篇 department of ph...

作者

  • 84 篇 f.krauss
  • 84 篇 g.weiglein
  • 84 篇 h.murayama
  • 84 篇 j.parsons
  • 84 篇 j.d.jackson
  • 84 篇 g.d'ambrosio
  • 84 篇 r.s.chivukula
  • 84 篇 y.kwon
  • 84 篇 m.white
  • 84 篇 m.drees
  • 82 篇 p.de jong
  • 82 篇 o.dahl
  • 80 篇 b.foster
  • 80 篇 v.i.belousov
  • 80 篇 j.beringer
  • 78 篇 g.rybka
  • 78 篇 a.ringwald
  • 76 篇 s.blusk
  • 76 篇 m.grnewald
  • 76 篇 s.raby

语言

  • 4,548 篇 中文
  • 4,400 篇 英文
检索条件"作者=Y.S.C.Khuman"
8948 条 记 录,以下是61-70 订阅
排序:
Effect of Laser Welding on Properties of Dissimilar Joint of Al-Mg-si and Al-Mn Aluminum Alloys
收藏 引用
Journal of Materials science & Technology 2010年 第3期26卷 276-282页
作者: c.c.chang c.P.chou s.N.Hsu G.y.Hsiung J.R.chen Department of Mechanical Engineering National Chiao-Tung University National synchrotron Radiation Research center Department of Biomedical Engineering and Environmental sciences National Tsing-Hua University
This study discusses the welding properties for the components of an aluminum-alloy ultra-high vacuum chamber and beam position monitor (BPM).The welding parameters include the modes of laser output (pulsed wave an... 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 characterization of Fe-rich phases in a high-pressure die cast hypoeutectic aluminum-silicon alloy
收藏 引用
Journal of Materials science & Technology 2020年 第16期47卷 54-62页
作者: X.y.Jiao c.F.Liu Z.P.Guo G.D.Tong s.L.Ma y.Bi y.F.Zhang s.M.Xiong school of Materials science and Engineering Tsinghua UniversityBeijing 100084China Key Laboratory for Advanced Materials Processing Technology Tsinghua UniversityBeijing 100084China china FAW Foundary co. LTDChangchun 130011China
Both microstructural characteristics and fracture behavior of Fe-rich phases in a high-pressure die-cast hypoeutectic Al-si alloy were *** was focused on the morphology and formation mechanism of Fe-rich phases,togeth... 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
Bifurcation of rupture path by nonlinear damping force
收藏 引用
Applied Mathematics and Mechanics(English Edition) 2011年 第3期32卷 285-292页
作者: A. A. ZAINAL c. c. D. LING s. y. FAIsAL Department Mathematics Faculty ScienceUniversiti Teknologi MalaysiaSkudai 81310JohorMalaysia
The linear damping mechanism of the Rayleigh waves is extended to the nonlinear one. conferring to the model, the analytical method is chosen for the solutions. These solutions depict the unusual bifurcation of the ru... 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
Enhanced pitting corrosion resistance of a Zr-based metallic glass by ultraviolet light irradiation
收藏 引用
Journal of Iron and steel Research International 2023年 第8期30卷 1642-1649页
作者: Z.chen D.P.Wang s.Wang y.X.Geng y.X.Guo y.c.Wu Z.G.Liu y.y.Zhang y.X.Wang school of Materials science and Engineering Jiangsu University of Science and Technology.Zhenjiang 212003JiangsuChina school of Mechanical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina
The influence of ultraviolet light irradiation on the pitting corrosion performance of a Zr_(2)Ni metallic glass was examined using electrochemical methods and immersion test in 0.05 mol/L Nacl *** the results of pote... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Nanocomposites with auxetic nanotubes
收藏 引用
International Journal of smart and Nano Materials 2010年 第2期1卷 83-94页
作者: F.scarpa s.Adhikari c.y.Wang AccIs University of BristolBristolUK school of Engineering Swansea UniversitySwanseaUK
The effect of extreme and negative Poisson’s ratio(auxetic)behavior from non-reconstructed defective(NRD)carbon nanotubes on the mechanical properties of nanocomposites is *** carbon nanotubes(cNTs)produced by electr... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
synthesis,spectroscopic characterization and thermal studies of some lanthanide(Ⅲ) nitrate complexes with a hydrazo derivative of 4-aminoantipyrine
收藏 引用
Journal of Rare Earths 2009年 第5期27卷 705-710页
作者: K.Mohanan c.J.Athira y.sindhu M.s.sujamol Department of chemistry University of Kerala
A heterocyclic ligand synthesized by the coupling of diazotized 4-aminoantipyrine with acetylacetone reacted with lanthanide(Ⅲ) nitrate to form complexes of the type [Ln(HAAP)2(NOз)з] where, Ln=La(Ⅲ), ce(Ⅲ), Pr(... 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
solid-state alloying of Al-Mg alloys by accumulative roll-bonding:Microstructure and properties
收藏 引用
Journal of Materials science & Technology 2022年 第30期125卷 238-251页
作者: X.M.Mei Q.s.Mei J.y.Li c.L.Li L.Wan F.chen Z.H.chen T.Xu y.c.Wang y.y.Tan school of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China Key Laboratory of Hydraulic Machinery Transients(Wuhan University) Ministry of EducationWuhan 430072China school of Mechanical Engineering Wuhan Polytechnic UniversityWuhan 430023China
In this study,a novel solid-state alloying approach was adopted to fabricate Al-Mg alloys with high Mg contents(c_(Mg)) by accumulative roll-bonding(ARB)of Al and Mg elemental materials to ultrahigh *** results showed... 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
Influence of Grain size and Texture on the yield Asymmetry of Mg-3Al-1Zn Alloy
收藏 引用
Journal of Materials science & Technology 2011年 第1期27卷 29-34页
作者: s.M.yin c.H.Wang y.D.Diao s.D.Wu s.X.Li shenyang University of chemical Technology Shenyang 110142China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China
The yield asymmetry between compression and tension of magnesium alloy Mg-3Al-1Zn(AZ31) with different grain sizes and textures has been studied by tensile and compressive testing of as-cast,as-extruded and equal ch... 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
Influence of carrier Gas on Analysis of MgO Powders by Laser Ablation Inductively coupled Plasma Mass spectrometry
收藏 引用
Journal of Materials science & Technology 2009年 第3期25卷 333-335页
作者: J.s. Lee y.s. Lee c.J. Park H.s. Lee D.s. Lee Department of chemistry Yonsei University Material Analysis Team Korea Testing Laboratory Korea Research Institute of standards and science school of Material science and Engineering Pusan National Univirsity
Laser ablation inductively coupled plasma mass spectrometry (LA-IcP-Ms) has been widely adopted for the direct multi-elemental analysis with high sensitivity. Especially analysis of fine ceramics by LA-IcP-Ms withou... 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
structural and optoelectronic properties of sprayed sb:snO_2 thin films:Effects of substrate temperature and nozzle-to-substrate distance
收藏 引用
Journal of semiconductors 2011年 第10期32卷 1-9页
作者: A.R.Babar s.s.shinde A.V.Moholkar c.H.Bhosale K.y.Rajpure Electrochemical Materials Laboratory Department of PhysicsShivaji University
The influence of substrate temperature and nozzle-to-substrate distance(NsD) on the structural,morphological, optical and electrical properties of sb:snO_2 thin films prepared by chemical spray pyrolysis has been *... 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