咨询与建议

限定检索结果

文献类型

  • 22,089 篇 期刊文献
  • 462 篇 会议
  • 284 册 图书
  • 5 篇 学位论文

馆藏范围

  • 22,738 篇 电子文献
  • 109 种 纸本馆藏

日期分布

学科分类号

  • 8,797 篇 医学
    • 7,019 篇 临床医学
    • 1,130 篇 医学技术(可授医学...
    • 825 篇 基础医学(可授医学...
    • 684 篇 中西医结合
    • 571 篇 公共卫生与预防医...
    • 501 篇 药学(可授医学、理...
  • 8,066 篇 工学
    • 1,709 篇 材料科学与工程(可...
    • 1,257 篇 化学工程与技术
    • 1,062 篇 生物医学工程(可授...
    • 522 篇 电子科学与技术(可...
    • 479 篇 机械工程
    • 341 篇 地质资源与地质工...
    • 336 篇 环境科学与工程(可...
    • 333 篇 计算机科学与技术...
    • 325 篇 水利工程
    • 320 篇 动力工程及工程热...
    • 313 篇 仪器科学与技术
    • 289 篇 电气工程
  • 4,688 篇 理学
    • 866 篇 化学
    • 863 篇 物理学
    • 775 篇 生物学
    • 546 篇 地质学
    • 531 篇 数学
    • 304 篇 生态学
    • 277 篇 地球物理学
  • 2,143 篇 农学
    • 484 篇 作物学
    • 459 篇 畜牧学
    • 425 篇 农业资源与环境
  • 697 篇 管理学
    • 309 篇 管理科学与工程(可...
  • 469 篇 教育学
  • 410 篇 经济学
    • 345 篇 应用经济学
  • 251 篇 法学
  • 231 篇 文学
  • 116 篇 历史学
  • 89 篇 艺术学
  • 69 篇 哲学
  • 27 篇 军事学

主题

  • 148 篇 患者
  • 122 篇 mri
  • 114 篇 ct
  • 63 篇 cancer
  • 62 篇 rare earths
  • 59 篇 高血压
  • 51 篇 mr
  • 48 篇 队列研究
  • 47 篇 covid-19
  • 43 篇 analysis
  • 40 篇 corrosion
  • 39 篇 病人
  • 35 篇 temperature
  • 34 篇 治疗
  • 33 篇 diabetes
  • 31 篇 structure
  • 29 篇 acid
  • 27 篇 health
  • 26 篇 performance
  • 26 篇 survival

机构

  • 88 篇 西安交通大学
  • 72 篇 中国科学院大学
  • 67 篇 institute for pa...
  • 67 篇 california insti...
  • 67 篇 department of ph...
  • 67 篇 department of ph...
  • 67 篇 department of ph...
  • 67 篇 desy d-15735 zeu...
  • 67 篇 georg-august-uni...
  • 67 篇 bartol research ...
  • 67 篇 kavli institute ...
  • 67 篇 department of ph...
  • 67 篇 kek high energy ...
  • 67 篇 niels bohr insti...
  • 67 篇 dept.of physics ...
  • 67 篇 nikhef p.o.box 4...
  • 67 篇 ific-instituto d...
  • 67 篇 prisma cluster o...
  • 66 篇 max-planck-insti...
  • 66 篇 department of ph...

作者

  • 113 篇 叶鹏
  • 84 篇 f.krauss
  • 84 篇 g.weiglein
  • 84 篇 h.murayama
  • 84 篇 j.parsons
  • 84 篇 j.d.jackson
  • 84 篇 g.d'ambrosio
  • 84 篇 r.s.chivukula
  • 84 篇 y.kwon
  • 84 篇 m.white
  • 83 篇 m.drees
  • 77 篇 p.de jong
  • 76 篇 s.blusk
  • 74 篇 o.dahl
  • 72 篇 b.foster
  • 68 篇 g.rybka
  • 68 篇 a.ringwald
  • 66 篇 k.monig
  • 66 篇 v.i.belousov
  • 65 篇 j.beringer

语言

  • 15,000 篇 中文
  • 7,837 篇 英文
检索条件"作者=s.j.ch.n"
22840 条 记 录,以下是1-10 订阅
排序:
La3+ substitution-adjusted magnetic and optical properties with enhanced photocatalytic activity and stability of copper zinc nickel ferrites for wastewater treatment applications
收藏 引用
journal of Rare Earths 2025年 第2期43卷 319-328页
作者: n.s.Al-Bassami General studies Department Jubail Industrial College
Copper-zinc-nickel(Cu-Zn-ni) ferrite nanoparticles are used for wastewater treatment ***,low degradation efficiency and stability are two main issues that make them unsuitable for actual production *** this paper,th... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
Green synthesis of glycolic acid through the electrocatalytic reduction of oxalic acid over black TiO_(2): An experimental and theoretical study
收藏 引用
journal of Energy chemistry 2025年 第1期100卷 544-556页
作者: Hugo Olvera-Vargas Oscar Andrés jaramillo-Quintero Luis Darío Alarcón León Orlando Castro-Ocampo christian A.Celaya Marina E.Rinn jesús Muñiz Instituto de Energías Renovables Universidad Nacional Autónoma de México(IER-UNAM)Priv.Xochicalco s/nCol.CentroTemixcoMorelos.CP 62580Mexico Centro de nanociencias y nanotecnología Universidad Nacional Autónoma de México(UNAM)Km 107Carretera Tijuana-EnsenadaEnsenadaB.C.C.P.22800Mexico
Herein,we present the electrocatalytic four-electron hydrogenation of oxalic acid into glycolic acid using black TiO_(2)as an *** acid is an abundant compound found in several sources of organic *** results showed a h... 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
Clinical,laboratory,and therapeutic differences between immunoglobulin E-mediated and non-immunoglobulin E-mediated cow’s milk protein allergy in children
收藏 引用
World journal of Clinical Pediatrics 2025年 第1期14卷 78-92页
作者: Hasan M Isa Marwa j Abdulnabi nawra s naser Fatema n Lahmda noor M AlAnsari Zahra H Isa Afaf M Mohamed Department of Pediatrics Salmaniya Medical ComplexManama 26671Bahrain Department of Pediatrics Arabian Gulf UniversityManama 26671Bahrain Faculty of Medicine Mansoura UniversityMansoura 35516Egypt Public Health Directorate Ministry of HealthManama 26671Bahrain
BACKGROUnD Although breast milk is ideal for newborns,in some cases,it is replaced with cow’s milk,which contains proteins that increase the risk of cow’s milk protein allergy(CMPA).AIM To evaluate CMPA prevalence i... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
A systematic Review on the Comparison between Lumbar Disc Hernia Resection by Endoscopy and Microdiscectomy
收藏 引用
Open journal of Modern neurosurgery 2025年 第1期15卷 29-36页
作者: Iván Ulises sámano López Ernesto Eduardo Galván Hernández Rafael Avendaño Pradel josé Armando Biebrich Murguía Emmanuel Canchávez Thania Karina Gutiérrez Anchondo Centro Mdico ABC Ciudad de Mxico Mxico
Background: surgical treatment of lumbar disc herniation is a widely debated topic, with several techniques available. Percutaneous endoscopic discectomy (PELD) has gained popularity due to its lower invasiveness comp... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Reconstruction of pile-up events using a one-dimensional convolutional autoencoder for the nEDA detector array
收藏 引用
nuclear science and Techniques 2025年 第2期36卷 62-70页
作者: j.M.Deltoro G.jaworski A.Goasduff V.González A.Gadea M.Palacz j.j.Valiente-Dobón j.nyberg s.Casans A.E.navarro-Ann E.sanchis G.de Angelis A.Boujrad s.Coudert T.Dupasquier s.Ertürk O.stezowski R.Wadsworth Department of Electronic Engineering University of ValenciaBurjassotValenciaSpain Heavy Ion Laboratory University of Warsaw02-093 WarsawPoland Istituto nazionale di Fisica nucleare Laboratori Nazionali di LegnaroLegnaroItaly Instituto de Física Corpuscular CSIC-Universidad de Valencia46980 PaternaValenciaSpain Department of Physics and Astronomy Uppsala UniversityUppsalaSweden GAnIL CEA/DRF-CNRS/IN2P3Bvd.Henri Becquerel14076 CaenFrance CnRs IN2P3IPN LyonUniversitéLyon 169622 VilleurbanneFrance Department of Physics Nigde Omer Halisdemir University51240 NigdeTurkey Department of Physics University of YorkHeslingtonYork YO105DDUK
Pulse pile-up is a problem in nuclear spectroscopy and nuclear reaction studies that occurs when two pulses overlap and distort each other,degrading the quality of energy and timing *** methods have been used for pile... 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
Mitigating Hotspot Problem Using northern Goshawk Optimization Based Energy Aware Multi-Hop Communication for Wireless sensor networks
收藏 引用
china Communications 2025年 第2期22卷 283-298页
作者: s.Leones sherwin Vimalraj j.Lydia Department of Electronics and Communication Engineering Panimalar Engineering CollegeChennai 600123India Department of Electrical and Electronics Engineering Easwari Engineering CollegeChennai 600089India
Wireless sensor network(Wsn)comprises a set of interconnected,compact,autonomous,and resource-constrained sensor nodes that are wirelessly linked to monitor and gather data from the physical *** are commonly used in v... 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
Prehospital critical care drug-therapy and 30-day mortality in patients with acute respiratory disease
收藏 引用
World journal of Emergency Medicine 2025年 第1期16卷 43-50页
作者: jesús jurado-Palomo joséLuis Martín-Conty Begoña Polonio-López Cristina Rivera Picón Raúl López-Izquierdo Carlos del Pozo Vegas Pedro Ángel de santos Castro Ancor sanz-García Francisco Martín-Rodríguez Technological Innovation Applied to Health Research Group(ITAs) Faculty of Health SciencesCastilla-La Mancha UniversityTalavera de la Reina 45600Spain nuestra señora del Prado General Hospital Talavera de la Reina 45600Spain Emergency Department Rio Hortega University HospitalValladolid 47012Spain CIBER of Respiratory Diseases(CIBEREs) Institute of Health Carlos ⅢMadrid 28029Spain Faculty of Medicine University of ValladolidValladolid 470003Spain Emergency Department University Clinical HospitalValladolid 47003Spain Prehospital Emergency Medical services(sACYL) Valladolid 47007Spain
BACKGROUnD: Prehospital medication is a reality, and the role of these therapies must be explored to assess their validity, especially for acute respiratory diseases, which are usually associated with increased morbid... 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
Effects of rare-earth Pr3+-Dy3+ doping on structural,magnetic,optical and dielectric properties of Zn2Y hexaferrite
收藏 引用
journal of Rare Earths 2025年 第2期43卷 329-336页
作者: Ibrahim Mohammed Mohamed E.El sayed Ali shawabkeh Mohammad n.Murshed Ibtehaj F.Alshdoukhi Zeinhom M.El-Bahy j.Mohammed A.K.srivastava Department of Physics Lovely Professional University Department of science Technology Waziri Umaru Federal Polytechnic Birnin Kebbi Physics Department Faculty of Science and ArtsKing Khalid University College of Engineering and Technology American University of the Middle East Department of Basic sciences College of Science and Health ProfessionsKing Saud Bin Abdulaziz University for Health ScienceKing Abdullah International Medical Research Center Department of chemistry Faculty of ScienceAl-Azhar University Department of Physics Faculty of ScienceFederal University Dutse
This study was conducted to investigate the properties of Pr3+-Dy3+doped Zn2Y-type hexaferrite for potential technological applications.X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR) and fiel... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
Link between caries,periodontitis,and pregnancy:The role of personalized oral hygiene
收藏 引用
World journal of Clinical Cases 2025年 第6期13卷 51-57页
作者: Melissa Martínez nieto Martha Leticia De León Rodríguez Francisco javier Alcaraz Baturoni Alma Alicia soto chávez sarah Monserrat Lomelí Martínez Periodontics Program Department of Integrated Dentistry ClinicsCentro Universitario de Ciencias de la SaludUniversidad de GuadalajaraGuadalajara 44340Mexico Department of Medical and Life sciences Centro Universitario de la CiénegaUniversidad de GuadalajaraOcotlán 47810JaliscoMexico Master of Public Health Department of Well-being and SustainableCentro Universitario del NorteUniversidad de GuadalajaraColotlán 46200Mexico
Optimal health during pregnancy is crucial for ensuring the well-being of the mother and the developing *** article is focused on the impact of oral health and the role of personalized oral hygiene management in addre... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Implementation of a double trigger condition system based on charge comparison and TOF measurement for the nEDA detector array
收藏 引用
nuclear science and Techniques 2025年 第2期36卷 40-48页
作者: j.M.Deltoro A.Goasduff F.j.Egea V.González A.Gadea R.M.Pérez-Vidal I.Lazarus M.Kogimtzis L.Mcnicholl M.Palacz G.jaworski j.j.Valiente-Dobón j.nyberg s.Casans A.E.navarro-Ann E.sanchis A.Boujrad E.Clément T.Hüyük R.Illicachi O.stezowski V.Modamio Department of Electronic Engineering University of ValenciaBurjassotValenciaSpain Istituto nazionale di Fisica nucleare Laboratori Nazionali di LegnaroLaboratori Nazionali di LegnaroLegnaroPadovaItaly Instituto de Física Corpuscular CSIC-Universidad de ValenciaCSIC-Universidad de Valencia46980 PaternaValenciaSpain science and Technology Facilities Council DaresburyUK Heavy Ion Laboratory University of Warsaw02-093 WarsawPoland Department of Physics and Astronomy Uppsala UniversityUppsalaSweden Grand Accélérateur national d’Ions Lourds(GAnIL) CEA/DRF-CNRS/IN2P3CEA/DRF-CNRS/IN2P3CaenFrance Universitéde Lyon UniversitéLyon-1CNRS/IN2P3UMR5822IP2IIP2I4 Rue Enrico Fermi69622 Villeurbanne CedexFrance Department of Physics University of Oslo0316 OsloNorway
The nEutron Detector Array(nEDA)is designed to be coupled to gamma-ray spectrometers to enhance the sensitivity of the setup by enabling reaction channel selection through counting of the evaporated *** article presen... 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