咨询与建议

限定检索结果

文献类型

  • 38,734 篇 期刊文献
  • 1,559 篇 会议
  • 800 册 图书
  • 1 篇 学位论文

馆藏范围

  • 40,821 篇 电子文献
  • 293 种 纸本馆藏

日期分布

学科分类号

  • 16,144 篇 工学
    • 3,440 篇 材料科学与工程(可...
    • 2,705 篇 生物医学工程(可授...
    • 1,873 篇 化学工程与技术
    • 1,016 篇 电子科学与技术(可...
    • 993 篇 机械工程
    • 793 篇 动力工程及工程热...
    • 724 篇 水利工程
    • 662 篇 地质资源与地质工...
    • 598 篇 电气工程
    • 598 篇 环境科学与工程(可...
    • 560 篇 仪器科学与技术
    • 531 篇 计算机科学与技术...
    • 501 篇 力学(可授工学、理...
  • 14,779 篇 医学
    • 12,232 篇 临床医学
    • 2,836 篇 医学技术(可授医学...
    • 1,882 篇 基础医学(可授医学...
    • 1,448 篇 中西医结合
    • 846 篇 公共卫生与预防医...
    • 710 篇 药学(可授医学、理...
  • 7,569 篇 理学
    • 1,400 篇 物理学
    • 1,214 篇 化学
    • 1,204 篇 生物学
    • 996 篇 地质学
    • 737 篇 数学
    • 724 篇 地球物理学
    • 504 篇 生态学
  • 3,759 篇 农学
    • 889 篇 畜牧学
    • 786 篇 作物学
    • 654 篇 农业资源与环境
  • 1,239 篇 管理学
  • 772 篇 经济学
    • 672 篇 应用经济学
  • 724 篇 教育学
  • 404 篇 法学
  • 368 篇 文学
  • 192 篇 艺术学
  • 176 篇 历史学
  • 162 篇 哲学
  • 31 篇 军事学

主题

  • 608 篇 ct
  • 482 篇 mri
  • 272 篇 mr
  • 232 篇 患者
  • 221 篇 病人
  • 162 篇 美国
  • 79 篇 analysis
  • 75 篇 治疗
  • 72 篇 高血压
  • 64 篇 covid-19
  • 61 篇 corrosion
  • 60 篇 北美洲
  • 56 篇 发生率
  • 56 篇 temperature
  • 53 篇 pet
  • 53 篇 日本
  • 50 篇 rare earths
  • 49 篇 diabetes
  • 46 篇 microstructure
  • 46 篇 诊断

机构

  • 71 篇 北京大学
  • 68 篇 university of mi...
  • 68 篇 中国科学院大学
  • 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 ...
  • 63 篇 compas group ins...
  • 63 篇 rudolf peierls c...
  • 63 篇 department of ph...
  • 62 篇 清华大学
  • 61 篇 university of ch...
  • 60 篇 max-planck-insti...
  • 60 篇 nstitucio catala...

作者

  • 239 篇 叶鹏
  • 93 篇 刘莉
  • 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
  • 84 篇 y.kwon
  • 82 篇 m.white
  • 82 篇 m.drees
  • 71 篇 s.blusk
  • 61 篇 k.monig
  • 56 篇 郭战宏
  • 47 篇 p.de jong
  • 40 篇 o.dahl
  • 33 篇 朱国栋
  • 32 篇 b.foster
  • 32 篇 j.zhang

语言

  • 27,784 篇 中文
  • 13,309 篇 英文
检索条件"作者=J.M.MAZA-ORTEgA"
41094 条 记 录,以下是1-10 订阅
排序:
Overview of power electronics technology and applications in power generation, transmission and distribution
收藏 引用
journal of modern Power Systems and Clean Energy 2017年 第4期5卷 499-514页
作者: j.m.maza-ortega E.ACHA S.GARCIA A.GómEZ-EXPóSITO Department of Electrical Engineering University of SevillaSevilleSpain Department of Electrical Energy Engineering Tampere University of TechnologyTampereFinland School of Electrical Engineering Universidad MichoacanaMoreliaMexico
The main objective of this paper is ***, to provide an overview of the current status of the power electronics technology, one of the key actors in the upcoming smart grid paradigm enabling maximum power throughputs a... 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
Brain-penetrating neurotrophic factor mimetics: HER-096 as a disease-modifying therapy for Parkinson’s disease
收藏 引用
Neural Regeneration Research 2025年 第4期20卷 1094-1095页
作者: Natalia Kulesskaya Kira m.Holmström Henri j.Huttunen Herantis Pharma Plc EspooFinland
Neurotrophic factors as a therapeutic approach in neurodegenerative diseases:A major unmet need in the field of central nervous system diseases is disease-modifying *** for decades there have been various symptomatic ... 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
Sleep as a window to understand and regulate Alzheimer's disease:emerging roles of thalamic reticular nucleus
收藏 引用
Neural Regeneration Research 2025年 第6期20卷 1711-1712页
作者: Haoqi Sun Shiqian Shen Robert j.Thomas m.Brandon Westover Can Zhang Department of Neurology Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA Center for Translational Pain Research Department of AnesthesiaCritical Care and Pain MedicineMassachusetis General HospitalHarvard Medical SchoolBostonMAUSA Division of Pulmonary Critical Care and Sleep MedicineDepartment of MedicineBeth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA Genetics and Aging Research Unit McCance Center for Brain HealthMass General Institute for Neurodegenerative DiseaseDepartment of NeurologyMassachusetts General HospitalHarvard Medical SchoolBostonMAUSA
Introduction:Alzheimer 's disease(AD) is a common neurodegenerative disorder and the primary cause of dementia. Considerable evidence supports the “amyloid hypothesis,” stating that the pathogenesis of AD is primari... 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
Emerging role of A-kinase anchoring protein 5 signaling in reward circuit function
收藏 引用
Neural Regeneration Research 2025年 第10期20卷 2913-2914页
作者: William j.Flerlage mark L.Dell’Acqua Brian m.Cox Fereshteh S.Nugent Uniformed Services University of the Health Sciences Department of Pharmacology and Molecular TherapeuticsBethesdaMDUSA Department of Pharmacology University of Colorado School of MedicineAnschutz Medical CampusAuroraCOUSA
There is a strong evidence supporting the hypothesis of synaptic dysfunction as a major contributor to neural circuit and network disruption underlying emotional and mood dysregulation in psychiatric disorders(Simmons... 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
Energetic-protein supplementation in the last 60 days of gestation improves performance of beef cows grazing tropical pastures
收藏 引用
journal of Animal Science and Biotechnology 2018年 第1期9卷 208-216页
作者: Aline Gomes da Silva mário Fonseca Paulino Edenio Detmann Henrique jorge Fernandes Lincoln da Silva Amorim Román Enrique maza ortega Victor Valério de Carvalho josilaine Aparecida da Costa Lima Felipe Henrique de moura mariana Benevides monteiro jéssika Almeida Bitencourt Universidade Federal de Vicosa VicosaMinas Gerais 36570-000Brazil Universidade Federal de mato Grosso do Sul Campo GrandeMato Grosso do Sul 79074-460Brazil Universidade Estadual de mato Grosso do Sul AquidauanaMato Grosso do Sul 79200-000Brazil Biotran Biotecnologia e Treinamento em Reproducao Animal AlfenasMinas Gerais 37130-000Brazil Universidade Federal do Acre Rio BrancoAcre 69920-900Brazil
Background: Nutrition is one of the most important factors that affect animal performance, and it therefore also impacts on financial results in beef systems. In this way, finding the best strategy for feeding supple... 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
Temporal dynamics of neonatal hypoxic-ischemic encephalopathy injuries on magnetic resonance imaging
收藏 引用
Neural Regeneration Research 2025年 第11期20卷 3144-3150页
作者: Holly Flyger Samantha j.Holdsworth Alistair j.Gunn Laura Bennet Hamid Abbasi mātai medical Research Institute Tairāwhiti GisborneNew Zealand Department of Anatomy&medical Imaging Faculty of Medical and Health SciencesThe University of AucklandAucklandNew Zealand Center for Brain Research The University of AucklandAucklandNew Zealand Auckland Bioengineering Institute The University of AucklandAucklandNew Zealand
moderate to severe perinatal hypoxic-ischemic encephalopathy occurs in~1 to 3/1000 live births in high-income countries and is associated with a significant risk of death or neurodevelopmental *** assessment is import... 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
Arctic sea-ice extent: No record minimum in 2023 or recent years
收藏 引用
Atmospheric and Oceanic Science Letters 2025年 第1期18卷 52-55页
作者: Ola m.johannessen Tor I.Olaussen Nansen Scientific Society BergenNorway Nansen Environmental and Remote Sensing Center BergenNorway
Arctic sea-ice extent reaches its minimum each year in September. On 11 September 2023 the minimum was 4.969 million square kilometers(***^(2)). This was not a record low, which occurred in 2012, when the minimum was ... 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 inductively coupled plasma surface treatment on silica gel and mesoporous mCm-41 particles
收藏 引用
Plasma Science and Technology 2018年 第6期20卷 104-113页
作者: j A jUAREZ-mORENO U CHACON-ARGAEZ j BARRON-ZAmBRANO C CARRERA-FIGUEIRAS P QUINTANA-OWEN W TALAVERA-PECH Y PEREZ-PADILLA A AVILA-ortega facultad de ingeniería química-uady periférico norte kilómetro 33.5col.chuburna de hidalgo inn C.P. 97203 Mérida Yucatan México centro de investigación y de estudios avanzados del ipn-unidad mérida km.6 antigua carretera a progreso apdo. Postal 73 Cordemex 97310 Méfida Yucatán México
Silica gel and mCm-41 synthesized mesoporous materials were treated with either oxygen(O_2),hexamethyldisiloxane(HmDSO) and organic vapors like ethanol(Et OH),and acrylonitrile(AN)inductive *** radiofrequency ... 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
mixed-conducting ceramic–carbonate membranes exhibiting high CO2/O2 permeation flux and stability at high temperatures
收藏 引用
journal of Advanced Ceramics 2020年 第1期9卷 94-106页
作者: R.ortega-LUGO j.A.FABIAN-ANGUIANO O.OVALLE-ENCINIA C.GOmEZ-YANEZ B.H.ZEIFERT j.ORTIZ-LANDEROS Instituto Politécnico Nacional Escuela Superior de Ingeniería Química e Industrias ExtractivasDepartamento de Ingeniería en Metalurgia y MaterialesUPALM-ZacatencoMexico City 07738Mexico Chemical Engineering School for Engineering of matter Transport and EnergyArizona State UniversityTempeAZ 85287-6106USA
This investigation demonstrates the feasibility to fabricate high quality ceramic–carbonate membranes based on mixed-conducting ***,it is reported the simultaneous CO2/O2 permeation and stability properties of membra... 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
Nanostructured biohybrid material with wide-ranging antiviral action
收藏 引用
Nano Research 2023年 第8期16卷 11455-11463页
作者: Noelia Losada-Garcia Angela Vazquez-Calvo David ortega-Alarcon Olga Abian Adrian Velazquez-Campoy Pilar Domingo-Calap Antonio Alcami jose m.Palomo Instituto de Catálisis y Petroleoquímica(ICP) CSICC/Marie Curie 2.Madrid 28049Spain Centro de Biología molecular Severo Ochoa Consejo Superior de Investigaciones Científicas(CSIC)-Universidad Autónoma de Madrid(UAM)Madrid 28049Spain Institute of Biocomputation and Physics of Complex Systems(BIFI) Joint Unit GBsC-CSIC-BIFIUniversity of ZaragozaZaragoza 50018Spain Fundación Instituto de Investigación Sanitaria de Aragón(IIS Aragón) Zaragoza 50009Spain CIBERehd Madrid 28029Spain Instituto de Biología Integrativa de Sistemas I2SyBioUniversitat de València-CSICValència E-46071Spain
Respiratory pathogens kill more people than any other infectious agent each year *** of novel,economically friendly,sustainable,and highly efficient materials against viruses is a major ***,we describe a nanostructure... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论