咨询与建议

限定检索结果

文献类型

  • 20,421 篇 期刊文献
  • 1,295 篇 会议
  • 672 册 图书
  • 15 篇 学位论文

馆藏范围

  • 22,182 篇 电子文献
  • 245 种 纸本馆藏

日期分布

学科分类号

  • 9,839 篇 医学
    • 8,459 篇 临床医学
    • 1,532 篇 医学技术(可授医学...
    • 1,325 篇 基础医学(可授医学...
    • 874 篇 公共卫生与预防医...
    • 769 篇 中西医结合
    • 539 篇 药学(可授医学、理...
  • 9,618 篇 工学
    • 2,974 篇 材料科学与工程(可...
    • 1,834 篇 生物医学工程(可授...
    • 1,658 篇 化学工程与技术
    • 1,137 篇 电子科学与技术(可...
    • 1,121 篇 机械工程
    • 1,046 篇 力学(可授工学、理...
    • 1,015 篇 电气工程
    • 941 篇 动力工程及工程热...
    • 831 篇 计算机科学与技术...
    • 794 篇 环境科学与工程(可...
    • 682 篇 地质资源与地质工...
    • 651 篇 冶金工程
    • 566 篇 核科学与技术
    • 564 篇 水利工程
  • 7,300 篇 理学
    • 2,388 篇 物理学
    • 2,301 篇 化学
    • 1,782 篇 生物学
    • 926 篇 数学
    • 914 篇 地球物理学
    • 867 篇 地质学
    • 821 篇 天文学
    • 526 篇 生态学
  • 2,429 篇 农学
    • 820 篇 作物学
    • 801 篇 畜牧学
  • 612 篇 管理学
  • 358 篇 教育学
  • 304 篇 经济学
  • 267 篇 法学
  • 178 篇 文学
  • 111 篇 历史学
  • 72 篇 艺术学
  • 51 篇 哲学
  • 27 篇 军事学

主题

  • 204 篇 ct
  • 192 篇 mri
  • 119 篇 患者
  • 106 篇 mr
  • 103 篇 病人
  • 59 篇 analysis
  • 53 篇 药物治疗
  • 45 篇 diabetes
  • 44 篇 simulation
  • 43 篇 phylogeny
  • 42 篇 properties
  • 42 篇 治疗
  • 39 篇 并发症
  • 39 篇 安慰剂对照
  • 39 篇 magnetic
  • 38 篇 死亡率
  • 37 篇 deep learning
  • 36 篇 corrosion
  • 36 篇 high
  • 35 篇 benin

机构

  • 116 篇 同济医科大学附属...
  • 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...
  • 66 篇 national researc...
  • 66 篇 cea/saclay dsm/i...
  • 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
  • 82 篇 v.burkert
  • 79 篇 y.hayato
  • 79 篇 a.v.gritsan
  • 75 篇 a.gurtu
  • 75 篇 m.carena
  • 73 篇 叶鹏
  • 73 篇 a.masoni
  • 66 篇 m.d.
  • 63 篇 kavli ipmu
  • 63 篇 l.pape
  • 63 篇 s.rolli
  • 59 篇 a.d.martin
  • 54 篇 b.heltsley
  • 50 篇 s.r.klein

语言

  • 12,158 篇 中文
  • 10,244 篇 英文
  • 1 篇 日文
检索条件"作者=D.m.w.i"
22403 条 记 录,以下是1-10 订阅
排序:
Enhancement of coercivity,permeability,and dielectric properties of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites for memory and high frequency devices
收藏 引用
Journal of Rare Earths 2024年 第6期42卷 1128-1135,I0005页
作者: i.Sardar m.d.Hossain m.S.Sikder m.N.i.Khan m.R.Rahman Physics discipline Khulna UniversityKhulna9208Bangladesh department of Physics Khulna University of Engineering&TechnologyKhulna9203Bangladesh department ofComputer Science and Engineering Northern University of Business&Technology KhulnaKhulna9100Bangladesh material Science division Atomic Energy CentreDhaka1000Bangladesh
Spinel cubic ferrites have huge applications in me mory and high frequency *** the improvement of these modern devices,the magnetic coercivity,permeability,and dielectric properties of a ferrite are the important *** ... 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
interfacial stress engineering toward enhancement of ferroelectricity in Al doped HfO_(2)thin films
收藏 引用
Chinese Physics B 2024年 第9期33卷 637-643页
作者: S X Chen m m Chen Y Liu d w Cao G J Chen department of microelectronics Jiangsu UniversityZhenjiang 212013China department of Physics Jiangsu UniversityZhenjiang 212013China Guangdong–Hong Kong–macao Joint Laboratory for intelligent micro-Nano Optoelectronic Technology Foshan UniversityFoshan 528225China
Ferroelectric HfO_(2)has attracted much attention owing to its superior ferroelectricity at an ultra-thin thickness and good compatibility with Si-based complementary metal-oxide-semiconductor(CmOS)***,the crystalliza... 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
development and testing of a high-power S-band klystron at BiNP SB RAS
收藏 引用
Nuclear Science and Techniques 2024年 第7期35卷 58-67页
作者: A.Levichev A.Barnyakov S.Samoylov d.Nikiforov V.ivanov m.Arsentyeva d.Chekmenev O.Pavlov i.Pivovarov Budker institute of Nuclear Physics Lavrentyeva Av.11NovosibirskRussia630090 Novosibirsk State University Pirogova Str.2NovosibirskRussia630090
This paper details the development and testing of the first working prototype of the S-band high-power klystron,accomplished at the Budker institute of Nuclear Physics,Siberian Branch,Russian Academy of Sciences(BiNP ... 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
Antibacterial HA-coatings on bioresorbable mg alloy
收藏 引用
Journal of magnesium and Alloys 2024年 第5期12卷 1965-1985页
作者: K.V.Nadaraia d.V.mashtalyar m.A.Piatkova A.i.Pleshkova i.m.imshinetskiy m.S.Gerasimenko E.A.Belov V.V.Kumeiko d.N.Kozyrev K.A.Fomenko V.V.mostovaya B.R.Torpanov A.R.Biktimirov i.S.Osmushko S.L.Sinebryukhov S.V.Gnedenkov institute of Chemistry FEB RAS 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far Eastern Federal University 10 Ajax BayRussky IslandVladivostok 690922Russia A.V.Zhirmunsky National Scientific Center of marine Biology FEB RAS 17 St.PalchevskogoVladivostok 690041Russia Regional Clinical dermatovenerological dispensary 18 V St.GamarnikaVladivostok 690033Russia NmiC“Treatment and Rehabilitation Center” 3 Ivankovskoe highwayMoscow 125367Russia
in this study,a calcium-phosphate coating was formed on a mg-mn-Ce alloy by the plasma electrolytic oxidation(PEO).The antibiotic vancomycin,widely used in the treatment of infections caused by Staphylococcus aureus(*... 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
SmiLE soft X-ray imager flight model CCd370 pre-flight device characterisation
收藏 引用
Earth and Planetary Physics 2024年 第1期8卷 25-38页
作者: S.Parsons d.J.Hall O.Hetherington T.w.Buggey T.Arnold m.w.J.Hubbard A.Holland Centre for Electronic imaging the Open UniversityMilton KeynesMK76AAUK
Throughout the SmiLE mission the satellite will be bombarded by radiation which gradually damages the focal plane devices and degrades their *** order to understand the changes of the CCd370s within the soft X-ray ima... 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
Effect of Ta_(2)O_(5)nanoparticles on bioactivity,composition,structure,in vitro and in vivo behavior of PEO coatings on mg-alloy
收藏 引用
Journal of magnesium and Alloys 2024年 第6期12卷 2360-2379页
作者: d.V.mashtalyar i.m.imshinetskiy V.V.Kashepa K.V.Nadaraia m.A.Piatkova A.i.Pleshkova K.A.Fomenko A.Yu.Ustinov S.L.Sinebryukhov S.V.Gnedenkov institute of Chemistry Far Eastern BranchRussian Academy of SciencesVladivostok690022Russia Far Eastern Federal University Vladivostok690950Russia Regional Clinical dermatovenerological dispensary Vladivostok690033Russia
The present study investigates the physical and chemical characteristics,behavior in vitro and in vivo,and biocompatibility of coatings containing Ta_(2)O_(5),which are obtained by plasma electrolytic oxidation(PEO)on... 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
BaTiO3 solid solutions co-doped with Gd3+ and Eu3+:Synthesis,structural evolution and dielectric properties
收藏 引用
Journal of Rare Earths 2024年 第10期42卷 1920-1926页
作者: R.martínez-López m.Pérez-Labra J.A.Romero-Serrano F.R.Barrientos-Hernández m.Reyes-Pérez m.i.Valenzuela-Carrillo G.Urbano-Reyes V.E.Reyes-Cruz G.i.dávila-Pulido Academic Area of Earth Sciences and materials Autonomous University of Hidalgo State metallurgy and materials department ESIQIE-IPNUPALM Autonomous University of Coahuila Boulevard Adolfo López Mateos S/n
in this paper,the synthesis,structural evolution,and dielectric properties of BaTiO3solid solutions codoped with rare earth elements(Gd3+and Eu3+) prepared using the solid-state reaction method are *** pure precursor ... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
ion heat transport in electron cyclotron resonance heated L-mode plasma on the T-10 tokamak
收藏 引用
Plasma Science and Technology 2024年 第4期26卷 52-60页
作者: V.A.KRUPiN m.R.NURGALiEV A.R.NEmETS i.A.ZEmTSOV S.d.SUNTSOV T.B.mYALTON d.S.SERGEEV N.A.SOLOVEV d.V.SARYCHEV d.V.RYJAKOV S.N.TUGARiNOV N.N.NAUmENKO National Research Centre“Kurchatov institute” Moscow 123182Russia Bauman moscow State Technical University Moscow 105005Russia institution“Project Center iTER” Moscow 123098Russia JSC“SOLAR” Minsk 220034Belarus
Anomalous ion heat transport is analyzed in the T-10 tokamak plasma heated with electron cyclotron resonance heating(ECRH) in second-harmonic extra-ordinary mode. Predictive modeling with empirical scaling for Ohmical... 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
Polio eradication surveillance in Sri Lanka,2019-2023
收藏 引用
Asian Pacific Journal of Tropical medicine 2024年 第6期17卷 268-272页
作者: m.A.Y.Fernando N.S.madarasinghe C.Rangana N.weerasinghe d.C.U.d.weligamage J.i.Abeynayake department of medical microbiology and immunology Faculty of MedicineUniversity of ColomboSri Lanka department of Virology Medical Research InstituteColombo 08Sri Lanka medical Research institute Colombo 08Sri Lanka
Objective:To evaluate the polio laboratory surveillance carried out from January,2019 to may,2023 by the Polio Regional Reference Laboratory,Sri ***:This retrospective study analyzed all stool samples received under t... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
The CCd instrument background of the SmiLE SXi
收藏 引用
Earth and Planetary Physics 2024年 第1期8卷 15-24页
作者: m.w.J.Hubbard O.Hetherington d.J.Hall T.w.Buggey S.Parsons T.Arnold A.Holland C.Pagani S.Sembay Centre for Electronic imaging The Open UniversityMilton KeynesMK76AAUK X-ray and Observational Astronomy Group Department of Physics&AstronomyUniversity of LeicesterLE17RHUK
The ESA and CAS SmiLE mission orbit is highly elliptical and will pass through multiple radiation *** Soft X-ray imager(SXi)instrument aboard has a radiation shutter door designed to close when the surrounding radiati... 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