咨询与建议

限定检索结果

文献类型

  • 46,316 篇 期刊文献
  • 3,154 篇 会议
  • 2,665 册 图书
  • 48 篇 学位论文
  • 22 篇 报纸

馆藏范围

  • 50,979 篇 电子文献
  • 1,272 种 纸本馆藏

日期分布

学科分类号

  • 18,175 篇 工学
    • 3,465 篇 材料科学与工程(可...
    • 1,933 篇 生物医学工程(可授...
    • 1,883 篇 化学工程与技术
    • 1,319 篇 机械工程
    • 1,260 篇 电子科学与技术(可...
    • 1,139 篇 计算机科学与技术...
    • 948 篇 地质资源与地质工...
    • 820 篇 仪器科学与技术
    • 799 篇 动力工程及工程热...
    • 663 篇 水利工程
    • 616 篇 光学工程
    • 600 篇 环境科学与工程(可...
  • 16,502 篇 医学
    • 13,577 篇 临床医学
    • 2,088 篇 医学技术(可授医学...
    • 1,449 篇 基础医学(可授医学...
    • 1,280 篇 中西医结合
    • 1,046 篇 公共卫生与预防医...
    • 714 篇 药学(可授医学、理...
  • 8,358 篇 理学
    • 1,512 篇 物理学
    • 1,393 篇 生物学
    • 1,321 篇 化学
    • 1,033 篇 地质学
    • 1,023 篇 数学
  • 4,207 篇 农学
    • 1,001 篇 畜牧学
    • 957 篇 作物学
    • 632 篇 农业资源与环境
  • 2,265 篇 管理学
    • 1,072 篇 管理科学与工程(可...
    • 677 篇 公共管理
  • 1,510 篇 经济学
    • 1,331 篇 应用经济学
  • 1,305 篇 教育学
    • 911 篇 教育学
  • 1,059 篇 文学
  • 855 篇 法学
  • 485 篇 艺术学
  • 345 篇 历史学
  • 252 篇 哲学
  • 124 篇 军事学

主题

  • 411 篇 ct
  • 402 篇 美国
  • 327 篇 mri
  • 268 篇 患者
  • 229 篇 病人
  • 173 篇 mr
  • 154 篇 北美洲
  • 111 篇 analysis
  • 110 篇 美利坚合众国
  • 96 篇 covid-19
  • 86 篇 of
  • 81 篇 治疗
  • 74 篇 中国
  • 71 篇 cancer
  • 64 篇 大洋洲
  • 61 篇 疾病
  • 59 篇 诊断
  • 57 篇 发生率
  • 57 篇 and
  • 54 篇 高血压

机构

  • 79 篇 中国科学院大学
  • 68 篇 university of mi...
  • 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...
  • 65 篇 institut fur the...
  • 64 篇 dept.of physics ...
  • 63 篇 compas group ins...
  • 63 篇 rudolf peierls c...
  • 60 篇 department of ph...
  • 60 篇 北京大学
  • 57 篇 max-planck-insti...
  • 57 篇 nstitucio catala...
  • 55 篇 cern european or...
  • 55 篇 department of ph...

作者

  • 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
  • 85 篇 y.kwon
  • 83 篇 m.white
  • 81 篇 m.drees
  • 77 篇 叶鹏
  • 75 篇 kevin d.hyde
  • 74 篇 s.blusk
  • 63 篇 郭战宏
  • 62 篇 k.monig
  • 44 篇 阿d
  • 41 篇 中远海运研发
  • 40 篇 李开
  • 38 篇 p.de jong
  • 36 篇 王铮

语言

  • 34,780 篇 中文
  • 17,409 篇 英文
  • 3 篇 其他
  • 1 篇 德文
  • 1 篇 日文
检索条件"作者=D.NIKKAMI"
52205 条 记 录,以下是1-10 订阅
排序:
Assessing dominant factors affecting soil erosion using a portable rainfall simulator
收藏 引用
International Journal of Sediment Research 2008年 第4期23卷 376-386页
作者: J.VAHABI d.nikkami Soil Conservation and Watershed Management Research Institute
Investigating the causes of soil erosion is difficult in natural conditions owing to the presence of other factors. Without simplifying the experimental conditions, studying soil behavior with its numerous parameters ... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
Methodologies of preparing erosion features map by using RS and GIS
收藏 引用
International Journal of Sediment Research 2008年 第2期23卷 130-137页
作者: Mohammadi Torkashvand Ali nikkami davood Islamic Azad University-Rasht branch RashtIranAssis.Prof Soil Conservation and Watershed Management Research Institute TehranIranAssis.Prof
The erosion features map is one of the basic maps in erosion and sediment studies and watershed management *** methodologies of preparing erosion features map by using RS and GIS were compared in research which took p... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
Biochemical dissection of STAT3 signaling in amyotrophic lateral sclerosis
收藏 引用
Neural Regeneration Research 2025年 第11期20卷 3229-3230页
作者: Savina Apolloni Nadia d’Ambrosi department of Biology University of Rome Tor VergataRomeItaly
Amyotrophic lateral sclerosis(ALS)is a progressive neurodegenerative disease characterized by the loss of upper and lower motor neurons,clinically marked by muscle atrophy and *** the clinical course is highly variabl... 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
Anti-amyloid antibodies in Alzheimer’s disease: what did clinical trials teach us?
收藏 引用
Neural Regeneration Research 2025年 第4期20卷 1092-1093页
作者: danko Jeremic Lydia Jiménez-díaz Juan d.Navarro-López NeuroPhysiology&Behavior Lab University of Castilla-La ManchaBiomedical Research Center(CRIB)School of Medicine of Ciudad RealCiudad RealSpain
Although many causes of Alzheimer’s disease(Ad)may exist,both the original amyloid cascade and tau hypotheses posit that abnormal misfolding and accumulation of amyloid-β(Aβ)and tau protein is the central event cau... 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
Remaking a connection:molecular players involved in post-injury synapse formation
收藏 引用
Neural Regeneration Research 2025年 第6期20卷 1719-1720页
作者: diogo Tomé Ramiro d.Almeida iBiMEd-Institute of Biomedicine Department of Medical SciencesUniversity of AveiroAveiroPortugal CNC-Center for Neuroscience and Cell Biology University of CoimbraCoimbraPortugal
Functional recovery from central nervous system(CNS)trauma depends not only on axon regeneration or compensatory sprouting of uninjured fibers but also on the ability of newly grown axons to establish functional synap... 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
dihydropyrimidine dehydrogenase polymorphisms in patients with gastrointestinal malignancies and their impact on fluoropyrimidine tolerability: Experience from a single Italian institution
收藏 引用
World Journal of Gastrointestinal Oncology 2025年 第1期17卷 101-109页
作者: Mariarosaria d'Amato Gennaro Iengo Nicola Massa Chiara Carlomagno department of Oncology Ospedale San Rocco ASL CasertaSessa Aurunca 81037CampaniaItaly department of Clinical Medicine and Surgery University of Naples Federico IINaples 80131CampaniaItaly
BACKGROUNd Fluoropyrimidines are metabolized in the liver by the enzyme dihydropyrimidine dehydrogenase(dPd),encoded by the dPYd *** 7%of the European population is a carrier of dPYd gene polymorphisms associated with... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Advancements in Liver Tumor detection:A Comprehensive Review of Various deep Learning Models
收藏 引用
Computer Modeling in Engineering & Sciences 2025年 第1期142卷 91-122页
作者: Shanmugasundaram Hariharan d.Anandan Murugaperumal Krishnamoorthy Vinay Kukreja Nitin Goyal Shih-Yu Chen deptartment of Artificial Intelligence and data Science Vardhaman College of EngineeringHyderabad501218India deptartment of CSE V.S.B College of EngineeringKarur639111India deptartment of Electrical and Electronics Engineering Vardhaman College of EngineeringHyderabad501218India Centre for Research Impact&Outcome Chitkara UniversityRajpura140401PunjabIndia department of Computer Science and Engineering School of Engineering and TechnologyCentral University of HaryanaMahendergarh123031HaryanaIndia department of Computer Science and Information Engineering National Yunlin University of Science and TechnologyYunlin64002Taiwan Intelligence Recognition Industry Service Research Center National Yunlin University of Science and TechnologyYunlin64002Taiwan
Liver cancer remains a leading cause of mortality worldwide,and precise diagnostic tools are essential for effective treatment *** Tumors(LTs)vary significantly in size,shape,and location,and can present with tissues ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Treating amyotrophic lateral sclerosis with allogeneic Schwann cell-derived exosomal vesicles: a case report
收藏 引用
Neural Regeneration Research 2025年 第4期20卷 1207-1216页
作者: Pascal J.Goldschmidt-Clermont Aisha Khan George Jimsheleishvili Patricia Graham Adriana Brooks Risset Silvera Alexander J.P.Goldschmidt damien d.Pearse W.dalton dietrich Allan d.Levi James d.Guest Miller School of Medicine University of MiamiMiamiFLUSA Stem Cell Institute Miller School of MedicineUniversity of MiamiMiamiFLUSA The Miami Project to Cure Paralysis Miller School of MedicineUniversity of MiamiMiamiFLUSA Alzady International LLC MiamiFLUSA Neurological Surgery Miller School of MedicineUniversity of MiamiMiamiFLUSA
Schwann cells are essential for the maintenance and function of motor neurons,axonal networks,and the neuromuscular *** amyotrophic lateral sclerosis,where motor neuron function is progressively lost,Schwann cell func... 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
Oligodendroglial heterogeneity in health,disease,and recovery:deeper insights into myelin dynamics
收藏 引用
Neural Regeneration Research 2025年 第11期20卷 3179-3192页
作者: Pieter-Jan Serneels Julie d.de Schutter Lies de Groef Lieve Moons Steven Bergmans KU Leuven Leuven Brain InstituteDepartment of BiologyAnimal Physiology and Neurobiology DivisionNeural Circuit Development&Regeneration Research GroupLeuvenBelgium KU Leuven Leuven Brain InstituteDepartment of BiologyAnimal Physiology and Neurobiology DivisionCellular Communication&Neurodegeneration Research GroupLeuvenBelgium
decades of research asserted that the oligodendroglial lineage comprises two cell types:oligodendrocyte precursor cells and ***,recent studies employing single-cell RNA sequencing techniques have uncovered novel cell ... 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
Ultra‑Transparent and Multifunctional IZVO Mesh Electrodes for Next‑Generation Flexible Optoelectronics
收藏 引用
Nano-Micro Letters 2025年 第1期17卷 293-309页
作者: Kiran A.Nirmal Tukaram d.dongale Atul C.Khot Chenjie Yao Nahyun Kim Tae Geun Kim School of Electrical Engineering Korea UniversityAnam‑ro 145Seongbuk‑guSeoulRepublic of Korea Computational Electronics and Nanoscience Research Laboratory School of Nanoscience and BiotechnologyShivaji UniversityKolhapur 416004India
Mechanically durable transparent electrodes are essential for achieving long-term stability in flexible optoelectronic ***,they are crucial for applications in the fields of energy,display,healthcare,and soft *** mesh... 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