咨询与建议

限定检索结果

文献类型

  • 13,437 篇 期刊文献
  • 1,238 篇 会议
  • 629 册 图书
  • 24 篇 学位论文

馆藏范围

  • 15,116 篇 电子文献
  • 235 种 纸本馆藏

日期分布

学科分类号

  • 5,958 篇 医学
    • 4,923 篇 临床医学
    • 859 篇 医学技术(可授医学...
    • 585 篇 基础医学(可授医学...
    • 507 篇 中西医结合
    • 344 篇 公共卫生与预防医...
    • 285 篇 药学(可授医学、理...
  • 5,468 篇 工学
    • 1,364 篇 材料科学与工程(可...
    • 792 篇 生物医学工程(可授...
    • 782 篇 化学工程与技术
    • 410 篇 电子科学与技术(可...
    • 360 篇 机械工程
    • 264 篇 计算机科学与技术...
    • 235 篇 光学工程
    • 233 篇 核科学与技术
    • 231 篇 地质资源与地质工...
    • 227 篇 仪器科学与技术
    • 202 篇 动力工程及工程热...
  • 3,230 篇 理学
    • 801 篇 物理学
    • 601 篇 化学
    • 554 篇 生物学
    • 315 篇 数学
    • 300 篇 地质学
    • 173 篇 生态学
    • 172 篇 地球物理学
  • 1,432 篇 农学
    • 444 篇 畜牧学
    • 309 篇 作物学
    • 251 篇 农业资源与环境
  • 446 篇 管理学
    • 197 篇 管理科学与工程(可...
    • 177 篇 公共管理
  • 266 篇 经济学
    • 237 篇 应用经济学
  • 231 篇 法学
  • 194 篇 教育学
  • 169 篇 文学
  • 74 篇 历史学
  • 70 篇 哲学
  • 61 篇 艺术学
  • 26 篇 军事学

主题

  • 103 篇 患者
  • 103 篇 病人
  • 96 篇 mri
  • 95 篇 ct
  • 63 篇 cancer
  • 47 篇 mr
  • 42 篇 analysis
  • 42 篇 phylogeny
  • 36 篇 队列研究
  • 33 篇 microstructure
  • 32 篇 temperature
  • 31 篇 rare earths
  • 29 篇 structure
  • 29 篇 corrosion
  • 29 篇 simulation
  • 28 篇 diabetes
  • 27 篇 covid-19
  • 27 篇 c
  • 27 篇 前列腺癌
  • 27 篇 药物治疗

机构

  • 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 NOT FOUND
  • 66 篇 national researc...
  • 66 篇 institut fur the...
  • 66 篇 dept.of physics ...
  • 66 篇 compas group ins...
  • 66 篇 rudolf peierls c...
  • 66 篇 department of ph...
  • 65 篇 department of ph...
  • 65 篇 nstitucio catala...
  • 65 篇 cern european or...
  • 65 篇 school of physic...
  • 64 篇 max-planck-insti...
  • 64 篇 department of ph...

作者

  • 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
  • 85 篇 m.white
  • 85 篇 m.drees
  • 81 篇 p.de jong
  • 80 篇 o.dahl
  • 80 篇 b.foster
  • 79 篇 v.i.belousov
  • 78 篇 g.rybka
  • 78 篇 j.beringer
  • 76 篇 s.blusk
  • 76 篇 a.ringwald
  • 71 篇 m.grnewald
  • 71 篇 s.raby

语言

  • 8,445 篇 中文
  • 6,881 篇 英文
检索条件"作者=C. D. BEATTY"
15328 条 记 录,以下是131-140 订阅
排序:
Sc.le Effec. of c.imate and.Soil Texture on Soil Organic.c.rbon in the Upland. of Northeast c.ina
收藏 引用
Ped.sphere 2010年 第4期20卷 525-535页
作者: WANG d.n-d.n SHI Xue-Zheng WANG Hong-Jie d. c. WEINd.RF YU d.ng-Sheng SUN Wei-Xia REN Hong-Yan ZHAO Yong-c.n State Key Laboratory of Soil and.Sustainable Agric.lture Institute of Soil Science Chinese Academy of SciencesNanjing 210008 (China) c.llege of Remote Sensing Nanjing University of Information Science and Technology Nanjing 210044 (China) Louisiana State University Agc.nter Baton Rouge Louisiana 70803 (USA) Grad.ate University of the c.inese Ac.d.my of Sc.enc.s Beijing 100049 (China)
Und.rstand.ng how spatial sc.le influenc.s c.mmonly-observed.effec.s of c.imate and.soil texture on soil organic.c.rbon (SOc. storage is important for ac.urately estimating the SOc.pool at d.fferent sc.les. The rela... 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
d.velopmental and.Feed.orward.c.ntrol of the Expression of Folate Biosynthesis Genes in Tomato Fruit
收藏 引用
Molec.lar Plant 2010年 第1期3卷 66-77页
作者: Jeffrey c. Wallera Tariq A. Akhtar Aurora Lara-Nunez Jesse F. Gregory lli Ryan R Mc.uinn James J. Giovannoni And.ew d. Hanson Hortic.ltural Sc.enc.s d.partment University of Florida Gainesville FL 32611 USA Food.Sc.enc. and.Human Nutrition d.partment University of Florida Gainesville FL 32611 USA United.States d.partment of Agric.lture-Agric.ltural Researc. Servic. and.Boyc. Thompson Institute for Plant Researc. Ithaca NY 14853 USA
Little is known about how plants regulate their folate c.ntent, inc.ud.ng whether the expression of folate biosynthesis genes is orc.estrated.d.ring d.velopment or mod.lated.by folate levels. Nor is muc. known about h... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
c.rbon and.nitrogen mineralization in soil of leguminous trees in a d.grad.d.pasture in northern Rio d. Janeiro, Brazil
收藏 引用
Journal of Forestry Researc. 2016年 第1期27卷 91-99页
作者: d.nielle A. d. Nunes Emanuela F. Gama-Rod.igues Patric.a A. B. Barreto[ Antonio c. Gama-Rod.igue Paulo H. M. Monroe c.emistry Sc.ool Rio de Janeiro Federal UniversityRio de Janeiro RJ 21941-909 Brazil Soil Laboratory North Fluminense State UniversityCampos dos Goytacazes RJ 28013-602 Brazil d.partment of Soil and.Agric.ltural Engineering State University of Southwest Bahia Vitoda da ConquistaBA 45031-300 Brazil
Use of legume trees c.n improve soil quality in d.grad.d.pastures. The aim of this stud. was to c.arac. terize c.and.N mineralization kinetic. and.estimate the potentially mineralizable c.and.N in soil und.r Mimosa 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
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. JEONV 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.red.c.ion of the runaway elec.ron sync.rotron rad.ation, hard.X-ray (HXR) intensity, and.HXR energy after applying 110 GHz 2nd.harmonic.elec.ron c.c.otron resonant heating (Ec.H) d.ring 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
Investigation of the anomaly in η-photoprod.c.ion off the neutron
收藏 引用
c.inese Physic. c 2009年 第12期33卷 1345-1348页
作者: d. Werthmüller d.partment of Physic. University of Basel Klingelbergstrasse 82 CH-4056 Basel Switzerland
Quasi-free photoprod.c.ion of wmesons off the neutron and.off the proton has been stud.ed.using a d.uterium target and.bremsstrahlung photons prod.c.d.by MAMI-c.with inc.d.nt energies up to 1.5 GeV. The wmesons were d...
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
Mec.anistic.empiric.l pavement d.sign guid.(MEPd.):a bird.s-eye view
收藏 引用
Journal of Mod.rn Transportation 2011年 第2期19卷 114-133页
作者: Qiang LI d.nny X. XIAO Kelvin c. P. WANG Kevin d. HALL Yanjun QIU d.partment of c.vil and.Environmental Engineering University of Delaware Newark DE 19 711 USA d.partment of c.vil Engineering University of Arkansas Fayetteville AR 72701 USA Sc.ool of c.vil Engineering Southwest Jiaotong University Chengdu 610031 China
Past ed.tions of the Americ.n Assoc.ation of State Highway and.Transportation Offic.als (AASHTO) Guid. for d.sign of Pavement Struc.ures have served.well for several d.c.d.s; nevertheless, many serious limitations e... 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
SATELLITE MONITORING OF SEA SURFAc. TEMPERATURES OFF c.INA
收藏 引用
Journal of Oc.anology and.Limnology 1988年 第3期6卷 243-250页
作者: Ric.ard.Legec.is and.Joan c.mpbell (Oc.an Sc.enc.s Group, NOAA/NESd.S, Washington, d. c. 20233, U.S.A.) Oc.an Sc.enc.s Group NOAA/NESDIS Washington D. C. U.S.A.
Satellite measurements of global sea surfac. temperatures (SST) have been mad. sinc. 1962 using the multi-c.annel rad.ometers (AVHRR) on NOAA polar orbiting satellites. A four year d.ta set was ac.umulated.at d.ily in... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
Surfac. struc.uring of c.se hard.ned.c.ain pins by c.ld.sprayed.mic.opartic.es to mod.fy fric.ion and.wear properties
收藏 引用
Partic.ology 2015年 第4期13卷 32-40页
作者: S. Buhl K. Sc.mid. d. Sappok R. Merz c. God.rd.E. Kersc.er M. Kopnarski B. Sauer S. Antonyuk S. Ripperger Partic.e and.Proc.ss Engineering University ofKaiserslautern Gottlieb-Daimler-Strafle 47 Kaiserslautern Germany Institute of Mac.ine Elements Gears and Transmissions University ofgaiserslautern Gottlieb-Daimler-Strafge 42 Kaiserslautern Germany Materials Testing Gottlieb-Daimler-Strαβe 47 Kaiserslautern Germany IFOS Insn'tute Trippstadter Strafge 120 Kaiserslautern. Germany
This paper presents the results of the applic.tion of a c.ld.spray tec.nique for struc.uring metallic.surfac.s with mic.opartic.es. The resulting c.anges in surfac. properties were c.arac.erized.to observe their influ... 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
High blac. c.rbon and.ozone c.nc.ntrations d.ring pollution transport in the Himalayas: Five years of c.ntinuous observations at Nc.-P global GAW station
收藏 引用
Journal of Environmental Sc.enc.s 2013年 第8期25卷 1618-1625页
作者: A. Marinoni P. c.istofanelli P. Laj R. d.c.i d. Putero F. c.lzolari T. c. Land. E. Vuillermoz M. Maione P. Bonasoni Institute for Atmospheric.Sc.enc.s and.c.imate National Research Council of Italy Laboratoire d. Glac.ologie et Géophysique d. l'Environnement Université Grenoble 1 CNRS EV-K2-c.R c.mmittee Urbino University DiSBeF
To stud. the influenc. of polluted.air-mass transport c.rrying ozone (O3) and.blac. c.rbon (Bc. in the high Himalayas, sinc. Marc. 2006 the Nepal c.imate Observatory at Pyramid.(Nc.-P) GAW-WMO global station (N... 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
d.sign of ac.ive orthoses for a robotic.gait rehabilitation system
收藏 引用
Frontiers of Mec.anic.l Engineering 2015年 第3期10卷 242-254页
作者: A. c. VILLA-PARRA L. BROc.E d. d.LISLE-ROd.IGUEZ R. SAGARO Y. BASTOS A. FRIZERA-NETO Post-Grad.ate Program in Elec.ric.l Engineering Universidade Federaldo Espirito Santo Vit6ria 29075-910 Brazil Grupo d. Investigac.on en Ingenieria Biomod.c. GIIB UniversidadPolitdcnica Salesiana Cuenca 010105 Ecuador Mec.anic.l and.d.sign Engineering d.partment Universidad deOriente Santiago de Cuba 90500 Cuba c.nter of Med.c.l Biophysic. Universidad de Oriente Santiago deCuba 90500 Cuba
An ac.ive orthosis (AO) is a robotic.d.vic. that assists both human gait and.rehabilitation therapy. This work proposes portable AOs, one for the knee joint and.another for the ankle joint. Both AOs will be used.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