咨询与建议

限定检索结果

文献类型

  • 88,228 篇 期刊文献
  • 11,596 篇 会议
  • 4,417 册 图书
  • 121 篇 学位论文
  • 17 篇 报纸

馆藏范围

  • 102,384 篇 电子文献
  • 2,095 种 纸本馆藏

日期分布

学科分类号

  • 39,861 篇 工学
    • 6,922 篇 材料科学与工程(可...
    • 4,729 篇 化学工程与技术
    • 3,108 篇 机械工程
    • 2,985 篇 电子科学与技术(可...
    • 2,946 篇 生物医学工程(可授...
    • 2,836 篇 控制科学与工程
    • 2,813 篇 计算机科学与技术...
    • 2,067 篇 仪器科学与技术
    • 1,824 篇 软件工程
    • 1,816 篇 动力工程及工程热...
    • 1,730 篇 地质资源与地质工...
    • 1,625 篇 水利工程
    • 1,464 篇 电气工程
  • 29,208 篇 医学
    • 23,418 篇 临床医学
    • 3,138 篇 医学技术(可授医学...
    • 2,520 篇 基础医学(可授医学...
    • 2,207 篇 中西医结合
    • 1,947 篇 公共卫生与预防医...
  • 20,265 篇 理学
    • 3,712 篇 数学
    • 3,626 篇 化学
    • 3,211 篇 物理学
    • 2,765 篇 生物学
    • 1,808 篇 地质学
    • 1,697 篇 系统科学
  • 8,994 篇 农学
    • 2,357 篇 作物学
    • 1,802 篇 畜牧学
    • 1,502 篇 农业资源与环境
  • 5,122 篇 管理学
    • 2,662 篇 管理科学与工程(可...
  • 3,250 篇 经济学
    • 2,844 篇 应用经济学
  • 2,187 篇 教育学
    • 1,501 篇 教育学
  • 1,648 篇 法学
  • 1,628 篇 文学
  • 647 篇 历史学
  • 601 篇 哲学
  • 578 篇 艺术学
  • 269 篇 军事学

主题

  • 678 篇 美国
  • 674 篇 ct
  • 489 篇 mri
  • 450 篇 of
  • 376 篇 病人
  • 352 篇 患者
  • 304 篇 and
  • 280 篇 北美洲
  • 268 篇 mr
  • 256 篇 cancer
  • 214 篇 美利坚合众国
  • 190 篇 应用
  • 180 篇 治疗
  • 159 篇 analysis
  • 158 篇 covid-19
  • 158 篇 方程
  • 157 篇 中国
  • 146 篇 诊断
  • 143 篇 model
  • 135 篇 disease

机构

  • 422 篇 深圳大学
  • 231 篇 山东大学
  • 182 篇 北京大学
  • 123 篇 西南民族大学
  • 111 篇 清华大学
  • 100 篇 中国科学院大学
  • 95 篇 同济医科大学附属...
  • 73 篇 浙江大学
  • 71 篇 南京农业大学
  • 71 篇 四川大学
  • 69 篇 西安交通大学
  • 68 篇 university of mi...
  • 68 篇 上海交通大学
  • 67 篇 institute for pa...
  • 67 篇 albert einstein ...
  • 67 篇 dipartimento di ...
  • 67 篇 nikhef p.o.box 4...
  • 66 篇 fysikum stockhol...
  • 64 篇 华中科技大学
  • 64 篇 michigan state u...

作者

  • 661 篇 p.r.china
  • 175 篇 叶鹏
  • 148 篇 p. r. china
  • 87 篇 刘莉
  • 85 篇 f.krauss
  • 85 篇 g.weiglein
  • 85 篇 h.murayama
  • 84 篇 j.parsons
  • 84 篇 j.d.jackson
  • 82 篇 g.d'ambrosio
  • 81 篇 r.s.chivukula
  • 79 篇 郭战宏
  • 77 篇 y.kwon
  • 74 篇 郭俊
  • 62 篇 p.r. china
  • 53 篇 s.blusk
  • 52 篇 李开
  • 50 篇 shanghai
  • 50 篇 beijing
  • 47 篇 m.white

语言

  • 61,560 篇 中文
  • 42,796 篇 英文
检索条件"作者=r.N.Karthika"
104379 条 记 录,以下是1-10 订阅
排序:
Phish Block:A Blockchain Framework for Phish Detection in Cloud
收藏 引用
Computer Systems Science & Engineering 2023年 第1期44卷 777-795页
作者: r.n.karthika C.Valliyammai M.naveena Department of Computer Technology Madras Institute of Technology CampusAnna UniversityChrompet600044India
The data in the cloud is protected by various mechanisms to ensure security aspects and user’s ***,deceptive attacks like phishing might obtain the user’s data and use it for malicious *** Spite of much techno-logic... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Diabetic peripheral neuropathy and neuromodulation techniques:a systematic review of progress and prospects
收藏 引用
neural regeneration research 2025年 第8期20卷 2218-2230页
作者: rahul Mittal Keelin McKenna Grant Keith Evan McKenna Joana r.n.Lemos Jeenu Mittal Khemraj Hirani Diabetes research Institute University of Miami Miller School of MedicineMiamiFLUSA Department of Otolaryngology University of Miami Miller School of MedicineMiamiFLUSA Herbert Wertheim College of Medicine Florida International UniversityMiamiFLUSA School of Medicine and Public Health University of WisconsinMadisonWIUSA
neuromodulation for diabetic peripheral neuropathy represents a significant area of interest in the management of chronic pain associated with this *** peripheral neuropathy,a common complication of diabetes,is charac... 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
Hybrid Deep Learning-Based Adaptive Multiple Access Schemes Underwater Wireless networks
收藏 引用
Intelligent Automation & Soft Computing 2023年 第2期35卷 2463-2477页
作者: D.Anitha r.A.karthika SrM Institute of Science and Technology KattankulathurChennai603203India Vels Institute of Science Technology&Advanced StudiesChennai600117India
Achieving sound communication systems in Under Water Acoustic(UWA)environment remains challenging for *** communication scheme is complex since these acoustic channels exhibit uneven characteristics such as long propa... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
3D tomographic analysis of equatorial plasma bubble using GnSS-TEC data from Indonesian GnSS network
收藏 引用
Earth and Planetary Physics 2025年 第1期9卷 127-136页
作者: Ihsan naufal Muafiry Prayitno Abadi Teguh n.Pratama Dyah r.Martiningrum Sri Ekawati Yuandhika GWismaya Febrylian FChabibi Gatot HPramono research Center for Climate and Atmosphere Indonesian National Research and Innovation Agency(BRIN)BandungIndonesia Indonesian Geospatial Information Agency(BIG) JakartaIndonesia Dept.of Physics Faculty of ScienceUniversiti Teknologi MalaysiaJohor BahruMalaysia Dept.Earth Planet Sci. Hokkaido UniversitySapporoJapan School of Electrical Engineering Telkom UniversityBandungIndonesia
Equatorial Plasma Bubbles(EPBs)are ionospheric irregularities that take place near the magnetic *** most commonly occur after sunset during the equinox months,although they can also be observed during other *** phenom... 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
Tuning the Microstructural and Magnetic Properties of ZnO nanopowders through the Simultaneous Doping of Mn and ni for Biomedical Applications
收藏 引用
Journal of Materials Science & Technology 2015年 第11期31卷 1111-1117页
作者: K.karthika K.ravichandran Post Graduate & research Department of Physics AVVM Sri Pushpam College(Autonomous)
Undoped and Mnni doped ZnO nanopowders were synthesized using a simple soft chemical route by varying the ni doping level (1, 3, 5 and 7 at.%) and keeping the Mn doping level (10 at.%) constant, X-ray diffractio... 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
Smart Fraud Detection in E-Transactions Using Synthetic Minority Oversampling and Binary Harris Hawks Optimization
收藏 引用
Computers, Materials & Continua 2023年 第5期75卷 3171-3187页
作者: Chandana Gouri Tekkali karthika natarajan School of Computer Science and Engineering VIT-AP University522237Andhra PradeshIndia
Fraud Transactions are haunting the economy of many individuals with several factors across the *** research focuses on developing a mechanism by integrating various optimized machine-learning algorithms to ensure the... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Gas chromatographic method for the determination of hexaconazole residues in black tea
收藏 引用
Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年 第2期9卷 160-164页
作者: Chinnachamy karthika Paul James SACHIn United Planter's Association of South India (UPASI) Tea research Foundation Tea Research Institute Nirar Dam Branch Post Office (BPO) Valparai 642127 Coimbatore District Tamil Nadu India
A highly reliable, quantitative and sensitive analytical method for determining the residues of the fungicide, hexaconazole in black tea is described. The proposed method is based on liquid-liquid extraction followed ... 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
nucleoside modified mrnA-lipid nanoparticles as a new delivery platform for the repair of the injured spinal cord
收藏 引用
neural regeneration research 2025年 第8期20卷 2311-2312页
作者: Krisztián Pajer Tamás Bellák Antal nógrádi Department of Anatomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary
Spinal cord injury and treatment opportunities:The adult mammalian spinal cord has a very limited capacity for spontaneous regeneration due to various intrinsic molecular and cellular *** the spinal cord neurons have ... 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
Contribution of leaf growth on the disappearance of fungicides used on tea under south Indian agroclimatic conditions
收藏 引用
Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年 第6期10卷 422-426页
作者: Chinnachamy karthika narayanan nair MUrALEEDHArAn United Planter's Association of South India (UPASI) Tea research Institute Tea Research Foundation Nirar Dam B.P.O United Planter's Association of South India (UPASI) Tea research Institute Tea Research FoundationNirar Dam B.P.O
The sprayed chemicals on tea leaves disappear over a period of time by the influence of rainfall elution, evaporation, growth dilution, and photodegradation. Influence of plant growth on the four fungicides (hexaconaz... 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
Impacts of PI3K/protein kinase B pathway activation in reactive astrocytes: from detrimental effects to protective functions
收藏 引用
neural regeneration research 2025年 第4期20卷 1031-1041页
作者: ramónrez-núñez María Fernanda González Ana María Avalos Lisette Leyton Cellular Communication Laboratory Programa de Biología Celular y MolecularCenter for Studies on ExerciseMetabolism and Cancer(CEMC)Instituto de Ciencias Biomédicas(ICBM)Facultad de MedicinaUniversidad de ChileSantiagoChile Advanced Center for Chronic Diseases(ACCDiS) Faculty of Chemical and Pharmaceutical Sciences&Faculty of MedicineUniversidad de ChileSantiagoChile Instituto de Ciencias Biomédicas Facultad de Ciencias de la SaludUniversidad Autónoma de ChileSantiagoChile
Astrocytes are the most abundant type of glial cell in the central nervous *** injury and inflammation,astrocytes become reactive and undergo morphological and functional *** on their phenotypic classification as A1 o... 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