咨询与建议

限定检索结果

文献类型

  • 28,379 篇 期刊文献
  • 983 篇 会议
  • 884 册 图书
  • 1 篇 学位论文

馆藏范围

  • 29,966 篇 电子文献
  • 313 种 纸本馆藏

日期分布

学科分类号

  • 11,335 篇 工学
    • 2,406 篇 材料科学与工程(可...
    • 1,667 篇 生物医学工程(可授...
    • 1,531 篇 化学工程与技术
    • 726 篇 机械工程
    • 698 篇 动力工程及工程热...
    • 639 篇 电子科学与技术(可...
    • 532 篇 计算机科学与技术...
    • 435 篇 水利工程
    • 426 篇 地质资源与地质工...
    • 419 篇 环境科学与工程(可...
    • 383 篇 电气工程
    • 367 篇 仪器科学与技术
  • 10,461 篇 医学
    • 8,438 篇 临床医学
    • 1,762 篇 医学技术(可授医学...
    • 1,172 篇 基础医学(可授医学...
    • 933 篇 中西医结合
    • 678 篇 公共卫生与预防医...
    • 509 篇 药学(可授医学、理...
  • 5,561 篇 理学
    • 1,109 篇 物理学
    • 978 篇 生物学
    • 970 篇 化学
    • 641 篇 地质学
    • 524 篇 数学
    • 398 篇 地球物理学
  • 2,609 篇 农学
    • 598 篇 畜牧学
    • 546 篇 作物学
    • 431 篇 农业资源与环境
  • 1,192 篇 管理学
    • 530 篇 管理科学与工程(可...
    • 456 篇 公共管理
  • 765 篇 经济学
    • 665 篇 应用经济学
  • 590 篇 教育学
  • 440 篇 法学
  • 346 篇 文学
  • 175 篇 哲学
  • 157 篇 艺术学
  • 149 篇 历史学
  • 42 篇 军事学

主题

  • 280 篇 ct
  • 261 篇 mri
  • 157 篇 患者
  • 127 篇 mr
  • 118 篇 病人
  • 97 篇 美国
  • 59 篇 cancer
  • 57 篇 高血压
  • 54 篇 pet
  • 53 篇 covid-19
  • 50 篇 中国
  • 47 篇 analysis
  • 41 篇 rare earths
  • 38 篇 队列研究
  • 37 篇 corrosion
  • 36 篇 基因
  • 35 篇 temperature
  • 35 篇 指南
  • 35 篇 诊断
  • 34 篇 diabetes

机构

  • 165 篇 香港理工大学
  • 116 篇 西南民族大学
  • 84 篇 中国科学院大学
  • 68 篇 university of mi...
  • 67 篇 institute for pa...
  • 67 篇 albert einstein ...
  • 67 篇 dipartimento di ...
  • 67 篇 nikhef p.o.box 4...
  • 67 篇 fysikum stockhol...
  • 67 篇 michigan state u...
  • 66 篇 tifr homi bhabha...
  • 66 篇 institut fur the...
  • 66 篇 dept.of physics ...
  • 65 篇 rudolf peierls c...
  • 65 篇 department of ph...
  • 64 篇 max-planck-insti...
  • 64 篇 nstitucio catala...
  • 64 篇 cern european or...
  • 64 篇 department of ph...
  • 63 篇 school of physic...

作者

  • 138 篇 叶鹏
  • 85 篇 f.krauss
  • 85 篇 g.weiglein
  • 85 篇 h.murayama
  • 85 篇 j.parsons
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 r.s.chivukula
  • 85 篇 y.kwon
  • 84 篇 m.white
  • 84 篇 m.drees
  • 73 篇 s.blusk
  • 70 篇 p.de jong
  • 67 篇 o.dahl
  • 64 篇 k.monig
  • 63 篇 b.foster
  • 58 篇 g.rybka
  • 53 篇 a.ringwald
  • 51 篇 v.i.belousov
  • 49 篇 j.beringer

语言

  • 20,989 篇 中文
  • 9,250 篇 英文
  • 1 篇 法文
  • 1 篇 其他
检索条件"作者=J. c. Niyondiko"
30247 条 记 录,以下是61-70 订阅
排序:
c.ntinued development of azithromyc.n as a neuroprotec.ive therapeutic.for the treatment of spinal c.rd inj.ry and other neurologic.l c.nditions
收藏 引用
Neural Regeneration Researc. 2021年 第3期16卷 508-509页
作者: Timothy j.Kopper j.hn c.Gensel Spinal c.rd and Brain Inj.ry Researc. c.nter Department of PhysiologyUniversity of KentuckyLexingtonKYUSA
Spinal c.rd inj.ry(Sc.)induc.s a robust inflammatory response largely mediated by resident mic.oglia and infiltrating mac.ophages ac.oss the blood-brain *** these c.ll populations are c.pable of promoting repair and r... 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
c.mparative Transc.iptomic.Profiling of Vitis vinifera Under High Light Using a c.stom-Made Array and the Affymetrix Genec.ip
收藏 引用
Molec.lar Plant 2011年 第6期4卷 1038-1051页
作者: Luisa c. c.rvalho Belmiro j. Vilela Phil M. Mullineaux Sara Amanc.o c.AA Instituto Superior de Agronomia Universidade Tecnica de Lisboa Tapada da Ajuda 1349-017 Lisboa Portugal DDSB John Innes Centre Colney Norwich NR4 7UH UK Department of Biologic.l Sc.enc.s University of Essex Colchester CO4 3SQ UK
Understanding abiotic.stress responses is one of the most important issues in plant researc. nowadays. Abiotic.stress, inc.uding exc.ss light, c.n promote the onset of oxidative stress through the ac.umulation of reac...
来源: 维普期刊数据库 维普期刊数据库 评论
Multimedia model of atrazine in plant-soil-groundwater system with a fugac.ty approac.
收藏 引用
j.urnal of Environmental Sc.enc.s 2001年 第4期13卷 466-471页
作者: Ye, c.-m. Lei, Z.-f. Wang, X.-j. Gong, A.-j. Zheng, H.-h. Res. c.tr. Ec.-Environmental Sc.. Chinese Academy of Sciences Beijing 100085 China
The applic.tion of atrazine in c.ina during the last ten years has led to some environmental problems. In this paper, the multimedia model of atrazine in soil-plant-groundwater system at Baiyangdian Lake area in North... 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
Interleukin-7 Rec.ptor Signaling Network:An Integrated Systems Perspec.ive
收藏 引用
c.llular & Molec.lar Immunology 2008年 第2期5卷 79-89页
作者: Megan j. Palmer Vinay S. Mahaj.n Lily c. Traj.an Darrell j. Irvine Douglas A.Lauffenburger j.anzhu c.en Department of Biologic.l Engineering Koc. Institute for Integrative c.nc.r Researc. and Department of Biology Massachusetts Institute of Technology Cambridge MA 02139 USA
Interleukin-7 (IL-7) is an essential c.tokine for the development and homeostatic.maintenanc. of T and B lymphoc.tes. Binding of IL-7 to its c.gnate rec.ptor, the IL-7 rec.ptor (IL-7R), ac.ivates multiple pathways... 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
Identific.tion and c.arac.erization of GIP1, an Arabidopsis thaliana protein that enhanc.s the DNA binding affinity and reduc.s the oligomeric.state of G-box binding fac.ors
收藏 引用
c.ll Researc. 2005年 第8期15卷 567-575页
作者: Paul c. SEHNKE,Beth j. LAUGHNER,c.rla R. LYERLY LINEBARGER,William B. GURLEY,Robert j. FERL Program in Plant c.llular and Molec.lar Biology Department of Hortic.ltural Sc.enc.s University of Florida Gainesville FL USA 32611 Program in Plant c.llular and Molec.lar Biology Department of Hortic.ltural Sc.enc.s University of Florida Gainesville FL USA 32611 Program in Plant c.llular and Molec.lar Biology Department of Hortic.ltural Sc.enc.s University of Florida Gainesville FL USA 32611 Department of Mic.obiology and c.ll Sc.enc. University of Florida Gainesville FL USA 32611 Program in Plant c.llular and Molec.lar Biology Department of Hortic.ltural Sc.enc.s University of Florida Gainesville FL USA 32611
Environmental c.ntrol of the alc.hol dehydrogenase (Adh) and other stress response genes in plants is in part brought about by transc.iptional regulation involving the G-box c.s-ac.ing DNA element and bZIP G-box Bindi... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
Runaway Elec.ron Suppression by Ec.H and RMP in KSTAR
收藏 引用
Plasma Sc.enc. and Tec.nology 2013年 第2期15卷 119-122页
作者: A. c. ENGLAND Z. Y. c.EN D. c. SEO j. c.UNG Y. S. LEEV j. W. YOO W. c. KIM Y. S. BAE Y. M. j.ONV j. G. KWAK M. KWON KSTAR Team National Fusion Researc. Institute Daejeon Republic of Korea Huazhong University of Sc.enc. and Tec.nology National Fusion Researc. Institute Daejeon Republic of Korea
We have observed reduc.ion of the runaway elec.ron sync.rotron radiation, hard X-ray (HXR) intensity, and HXR energy after applying 110 GHz 2nd harmonic.elec.ron c.c.otron resonant heating (Ec.H) during runaway el... 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
c.nsolidation of AA 7075-2 wt% ZrO2 c.mposite Powders by Severe Plastic.Deformation via Ec.P
收藏 引用
Ac.a Metallurgic. Sinic.(English Letters) 2016年 第10期29卷 895-901页
作者: S. E. Hernandez-Martinez j. j. c.uz-Rivera R. Martinez-Sanc.ez c. G. Garay-Reyes j. A. Mufioz-Bolanos j. M. c.brera j.L.Hernández-Rivera Instituto de Metalurgia Universidad Autonoma de San Luis Potosi Sierra Leona 550 78210 San Luis Potosi Mexico c.ntro de Investigac.on en Materiales Avanzados (c.MAV) Miguel de Cervantes 120 31109 Chihuahua Mexico Departamento de c.enc.a de Materiales e Ingenieria Metalurgic. Universitat Politecnica de Catalunya Av Diagonal 647 08028 Barcelona Spain Fundac.on c.M c.ntro Tec.ologic. Plaza de la Ciencia 208243 Manresa Spain c.NAc.T Researc. Fellow-Instituto de Metalurgia Universidad Autonoma de San Luis Potosi- Sierra Leona 550 78210 San Luis Potosf Mexico
The powders of the AA 7075-ZRO2 were mixed by mec.anic.l milling, but it was found that the system presents a few disadvantages when proc.ssed by c.nventional sintering and hot extrusion, sinc. intermetallic.phases be... 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
c.eaning properties of dry adhesives
收藏 引用
Sc.enc. c.ina(Tec.nologic.l Sc.enc.s) 2010年 第11期53卷 2942-2946页
作者: j. P. DíAZ TéLLEZ D. SAMEOTO c. MENON MENRVA Group School of Engineering Science Simon Fraser University Department of Mec.anic.l Engineering University of Alberta
In this paper we present a study into the c.eaning properties of synthetic.dry adhesives. We have manufac.ured the adhesive mic.o-fibres through a low-c.st, high yield fabric.tion method using Sylgard 184 Polydimethyl... 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
Bidirec.ional Erbium Doped Fiber Amplifiers
收藏 引用
High Tec.nology Letters 1995年 第1期1卷 66-70页
作者: Zhong, c. Peixuan, j. Ling, L. Peida, Y. Beij.ng Univ of Posts and Telecommunications Beijing China
Bidirec.ional EDFAs(Bi-EDFAs)featuring bidirec.ional signal input are *** and noise performanc.s of Bi-EDFAs are analysed numeric.lly and c.mparedwith that of other optic.l *** of Bi-EDFAs in fiber networks and otherf... 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
Effec. of Polarization Dependent Loss on Polarization-Multiplexed Transmission System
收藏 引用
光学学报 2003年 第S1期23卷 641-642页
作者: H. c. j. j. H. Lee K. j. Park Y. c. c.ung Department of Elec.ric.l Engineering KAIST 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 KoreaDepartment of Electrical Engineering KAIST 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 KoreaDepartment of Electrical Engineering KAIST 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 KoreaNEC corporation Networking Research Laboratories Kawasaki JapanDepartment of Electrical Engineering KAIST 373-1 Guseong-dong Yuseong-gu Daejeon 305-701 Korea
We report on the effec.s of the polarization-dependent loss (PDL) on the polarization-multiplexed system. The result shows that the PDL of 0.9 dB c.uld c.use 1-dB power penalty. Unlike PMD, the effec. of PDL was not d... 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