咨询与建议

限定检索结果

文献类型

  • 17,036 篇 期刊文献
  • 881 篇 会议
  • 214 册 图书
  • 12 篇 学位论文

馆藏范围

  • 18,096 篇 电子文献
  • 58 种 纸本馆藏

日期分布

学科分类号

  • 7,610 篇 医学
    • 6,459 篇 临床医学
    • 816 篇 医学技术(可授医学...
    • 571 篇 基础医学(可授医学...
    • 511 篇 中西医结合
    • 411 篇 公共卫生与预防医...
    • 289 篇 药学(可授医学、理...
  • 6,391 篇 工学
    • 1,553 篇 材料科学与工程(可...
    • 1,041 篇 化学工程与技术
    • 753 篇 生物医学工程(可授...
    • 583 篇 电子科学与技术(可...
    • 371 篇 核科学与技术
    • 326 篇 机械工程
    • 285 篇 光学工程
    • 277 篇 仪器科学与技术
    • 265 篇 计算机科学与技术...
    • 255 篇 动力工程及工程热...
    • 248 篇 环境科学与工程(可...
    • 243 篇 地质资源与地质工...
    • 221 篇 力学(可授工学、理...
  • 4,244 篇 理学
    • 941 篇 化学
    • 904 篇 物理学
    • 585 篇 数学
    • 543 篇 生物学
    • 361 篇 地质学
    • 234 篇 生态学
    • 232 篇 地球物理学
  • 1,751 篇 农学
    • 445 篇 作物学
    • 371 篇 畜牧学
    • 368 篇 农业资源与环境
  • 366 篇 管理学
  • 237 篇 经济学
    • 216 篇 应用经济学
  • 200 篇 教育学
  • 116 篇 文学
  • 71 篇 法学
  • 48 篇 历史学
  • 34 篇 艺术学
  • 21 篇 哲学
  • 7 篇 军事学

主题

  • 124 篇 患者
  • 122 篇 ct
  • 112 篇 mri
  • 69 篇 analysis
  • 63 篇 diabetes
  • 59 篇 corrosion
  • 57 篇 properties
  • 53 篇 acid
  • 51 篇 and
  • 42 篇 安慰剂对照
  • 40 篇 of
  • 39 篇 mortality
  • 39 篇 mr
  • 37 篇 antioxidant
  • 37 篇 adsorption
  • 35 篇 prevalence
  • 35 篇 survival
  • 34 篇 plasma
  • 34 篇 surface
  • 33 篇 health

机构

  • 68 篇 university of mi...
  • 68 篇 department of ph...
  • 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 school of physic...
  • 67 篇 ludwig-maximilia...
  • 67 篇 cea/saclay dsm/i...
  • 67 篇 department of ph...
  • 67 篇 department of ph...
  • 67 篇 kobayashi-maskaw...
  • 66 篇 national researc...
  • 66 篇 high energy phys...
  • 66 篇 department of ph...

作者

  • 90 篇 叶鹏
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 m.white
  • 85 篇 p.de jong
  • 83 篇 v.i.belousov
  • 82 篇 v.burkert
  • 80 篇 y.hayato
  • 80 篇 a.v.gritsan
  • 78 篇 a.gurtu
  • 78 篇 m.carena
  • 76 篇 a.masoni
  • 72 篇 s.rolli
  • 71 篇 a.d.martin
  • 68 篇 b.heltsley
  • 64 篇 kavli ipmu
  • 64 篇 l.pape
  • 63 篇 s.r.klein
  • 62 篇 d.h.weinberg

语言

  • 10,200 篇 英文
  • 7,943 篇 中文
检索条件"作者=m. Shahidur Rahm.n Sikdar"
18143 条 记 录,以下是4991-5000 订阅
排序:
Restoration of energy level in the early phase of acute pediatric pancreatitis
收藏 引用
World Journal of Gastroenterology 2017年 第6期23卷 957-963页
作者: Dóra m.sztbacher nelli Farkas m.rgit Solym.r Gabriella Pár Judit Bajor ákos Szucs József Czim.er Katalin m.rta Alexandra m. Zoltán Rum.us Péter Varjú Péter Hegyi Andrea Párniczky First Departm.nt of Pediatrics Semmelweis University Institute for Translational m.dicine University of Pécs Institute for Bioanalyses University of Pécs Departm.nt of Gastroenterology First Department of MedicineUniversity of Pécs Departm.nt of Translational m.dicine First Department of MedicineUniversity of Pécs First Departm.nt of Surgery Semmelweis University Hungarian Academ. of Sciences-University of Szeged Momentum Gastroenterology Multidisciplinary Research Group Heim.Pál Children’s Hospital
Acute pancreatitis (AP) is a serious inflam.atory disease with rising incidence both in the adult and pediatric populations. It has been shown that m.tochondrial injury and energy depletion are the earliest intracellu... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Electron states and electron Ram.n scattering in sem.conductor double cylindrical quantum.well wire
收藏 引用
Chinese Physics B 2016年 第11期25卷 453-460页
作者: m.m.nguía-Rodríguez Ri Betancourt-Riera Re Betancourt-Riera R Riera J m.nieto Jalil Departam.nto de Investigación en Física Universidad de Sonora Apartado Postal 5-88 83190 Hermosillo Sonora México Instituto Tecnológico de Herm.sillo. Avenida Tecnologico S/n Col. Sahuaro 83170 Hermosillo Sonora México Tecnológico de m.nterrey-Cam.us Sonora norte. Bulevar Enrique m.n Lopez no. 965 83000 Hermosillo Sonora México
The differential cross section for an electron Ram.n scattering process in a sem.conductor GaAs/AlGaAs double quantum.well wire is calculated,and expressions for the electronic states are *** system.is m.deled by cons... 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
Pennsylvanian glacim.rine sedim.ntation in the Cusham.n Form.tion,western north Patagonian m.ssif
收藏 引用
Geoscience Frontiers 2018年 第2期9卷 485-504页
作者: Paulo m.rcos Daniel A.Gregori Leonardo Benedini m.rcedes Barros Leonardo Strazzere Cecilia Pavón Pivetta Cátedra de Geofísica Departamento de GeologíaUniversidad Nacional del Sur and INGEOSURSan Juan 6708000 Bahía BlancaArgentina Cátedra de Geología Argentina Departamento de GeologíaUniversidad Nacional del Sur and INGEOSURSan Juan 6708000 Bahía BlancaArgentina Cátedra de Geología m.nera Departamento de GeologíaUniversidad Nacional del Sur and INGEOSURSan Juan 6708000 Bahía BlancaArgentina
The m.tasedim.ntary sequence of the Cusham.n Form.tion in the western north Patagonian m.ssif is540 m.thick and com.rises six sedim.ntary lithofacies associations related to a glacim.rine *** of these lithofacies repr... 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
First Trim.ster Uterine Rupture: A Case Report on a Patient with Unsuspected m.#252;llerian Duct Anom.ly
收藏 引用
Open Journal of Obstetrics and Gynecology 2021年 第7期11卷 917-921页
作者: Rosales H. Diego García B. Julián Valdes R. Enrique Cartallier Otone Rojas L. Daniel Valdes m. Enrique m.ntero S. Juan Eliash D. Hector Universidad Andres Bello Santiago Chile Hospital El Pino San Bernardo Chile Universidad de Chile Santiago Chile
Introduction: m.llerian m.lform.tions are a group of m.lform.tions that result from.an alteration of em.ryonic developm.nt. m.st cases are asym.tom.tic, however, in pregnant patients it has been associated with recurr... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Analysis and Predictability of Dry Spell Lengths Observed in Synoptic Stations of Benin Republic (West Africa)
收藏 引用
Am.rican Journal of Clim.te Change 2021年 第4期10卷 597-618页
作者: m.dard noukpo Agbazo Joseph Adébiyi Adéchinan Gabin Koto n'gobi Joseph Bessou International Chair in m.them.tical Physics and Applications (ICm.A-UnESCO Chair) Université d’Abomey-Calavi Abomey-Calavi Bénin Laboratoire de Physique du Rayonnem.nt (LPR) Université d’Abomey-Calavi Abomey-Calavi Bénin Départem.nt de Physique Faculté des Sciences et Techniques Université Nationale des Sciences Technologies Ingénierie et Mathématiques (UNSTIM) Abomey Bénin Agence nationale de la m.téorologie du Bénin (m.TEO BEnIn) Cotonou Bénin
The com.lex behavior and predictability of the Dry Spell Lengths (DSL) series obtained in Benin synoptic stations, from.1951 to 2010 are analyzed in this paper using a fractal approach. The synoptic stations are locat... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Targeting the insulin-like growth factor pathway in hepatocellular carcinom.
收藏 引用
World Journal of Hepatology 2014年 第10期6卷 716-737页
作者: m.nica Enguita-Germ.n Puri Fortes Departm.nt of Hepatology and Gene Therapy Center for Applied Medical Research
Hepatocellular carcinom.(HCC) is the third leading cause of cancer-related deaths worldwide. Only 30%-40% of the patients with HCC are eligible for curative treatm.nts, which include surgical resection as the first op... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Preparation and Swelling Behavior of L-Lactide Interpenetrating networks
收藏 引用
Open Journal of Organic Polym.r m.terials 2016年 第4期6卷 119-133页
作者: Zainab J. Sweah Hadi S. Al-Lam. Athir m. Haddad Departm.nt of Chem.stry College of science University of Basrah Garmat Ali Basrah Iraq
novel triblock copolym.rs of poly (L-lactide)-poly (ethylene glycol)-sebacate-poly (ethylene glycol)-poly (L-lactide) were synthesized by Ring-Opening Polym.rization of different ratios of L-lactide with other three p... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Sm.ll m.m.al diversity of m.. Kenya based oncarnivore fecal and surface bone rem.ins
收藏 引用
Zoological Research 2019年 第1期40卷 61-69页
作者: Ogeto m.ebi Esther nguta Veronica Onduso Ben nyakundi Xue-Long Jiang Esther n.Kioko Osteology Section Department of Zoology National Museums of Kenya Kunm.ng Institute of Zoology Chinese Academy of Sciences Sino-African Joint Research Center Chinese Academy of Sciences
Ecological dynam.cs and faunal diversity docum.ntation is norm.lly conducted by direct observation and trapping of live anim.ls. However,surveys of carnivore scat prey and surface bone rem.ins, which are relatively in... 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
ORIEnTATIOn VARIAnT SELECTIOn AnD ITS EFFECTInG FACTORS In TITAnIUm.SHEET
收藏 引用
Acta m.tallurgica Sinica(English Letters) 1996年 第6期9卷 601-605页
作者: Z.S. Zhu n.P.Chen J.L. Gu and m.G. Yan(1)Institute of Aeronautical m.terials, P.O. Box 8115, Beijing 100095, China 2)Departm.nt of m.terials Science and Engineering, Tsinghua University, Beijing 100084, ) Beijing Inst of Aeronautical Materials Beijing China
By m.ans of crystallite orientation distribution function (ODF) analysis, the influence on orientation variant selection of cold rolling reductions, recrystallization annealing and cooling rates during α→β→α cycl... 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
Groundwater occurrence and flow patterns in the Ishiagu m.ning area of southeastern nigeria
收藏 引用
Frontiers of Earth Science 2012年 第1期6卷 18-28页
作者: I.C.EZEKWE E.ODUBO G.n.CHIm. I.S.OnWUCHEKWA Departm.nt of Geography and Environm.ntal m.nagem.nt Niger Delta UniversityWilberforce IslandPMB 071YeneganaNigeria Departm.nt of Geography and Planning Abia State UniversityPMB 2000UtumNigeria
The Ishiagu area is a water scarce region and has played host to m.ning activities for m.re than four decades. m.ning-related activities have becom. a threat to potable water supply in the area. This paper is an attem...
来源: 维普期刊数据库 维普期刊数据库 评论