咨询与建议

限定检索结果

文献类型

  • 696 篇 期刊文献
  • 13 篇 会议
  • 4 册 图书
  • 3 篇 学位论文

馆藏范围

  • 714 篇 电子文献
  • 2 种 纸本馆藏

日期分布

学科分类号

  • 325 篇 医学
    • 291 篇 临床医学
    • 20 篇 医学技术(可授医学...
    • 14 篇 中西医结合
    • 13 篇 基础医学(可授医学...
    • 10 篇 药学(可授医学、理...
  • 193 篇 工学
    • 73 篇 材料科学与工程(可...
    • 20 篇 化学工程与技术
    • 18 篇 生物医学工程(可授...
    • 17 篇 电子科学与技术(可...
    • 16 篇 机械工程
    • 15 篇 计算机科学与技术...
    • 13 篇 环境科学与工程(可...
    • 9 篇 建筑学
    • 9 篇 水利工程
    • 9 篇 核科学与技术
    • 8 篇 软件工程
    • 7 篇 仪器科学与技术
    • 7 篇 农业工程
  • 184 篇 理学
    • 68 篇 物理学
    • 31 篇 生物学
    • 24 篇 化学
    • 20 篇 数学
    • 13 篇 天文学
    • 10 篇 生态学
    • 7 篇 地质学
  • 55 篇 农学
    • 18 篇 农业资源与环境
    • 11 篇 作物学
  • 20 篇 经济学
    • 19 篇 应用经济学
  • 18 篇 管理学
    • 7 篇 管理科学与工程(可...
  • 9 篇 教育学
    • 7 篇 体育学
  • 5 篇 文学
  • 3 篇 法学
  • 2 篇 历史学
  • 2 篇 艺术学

主题

  • 15 篇 hbc
  • 11 篇 qcd
  • 9 篇 magnesium alloy
  • 8 篇 corrosion
  • 8 篇 of
  • 7 篇 mortality
  • 7 篇 cancer
  • 7 篇 mri
  • 7 篇 colorectal cance...
  • 6 篇 high
  • 6 篇 liver
  • 6 篇 and
  • 6 篇 cern
  • 6 篇 covid-19
  • 6 篇 microalgae
  • 6 篇 outcomes
  • 6 篇 mexico
  • 6 篇 magnesium
  • 5 篇 diagnosis
  • 5 篇 baryons

机构

  • 67 篇 university of mi...
  • 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 department of ph...
  • 67 篇 school of physic...
  • 67 篇 ludwig-maximilia...
  • 67 篇 cea/saclay dsm/i...
  • 67 篇 department of ph...
  • 67 篇 department of ph...
  • 67 篇 kobayashi-maskaw...
  • 67 篇 high energy phys...
  • 67 篇 department of ph...
  • 66 篇 national researc...

作者

  • 73 篇 v.i.belousov
  • 73 篇 g.brooijmans
  • 73 篇 r.m.barnett
  • 73 篇 d.m.asner
  • 71 篇 h.murayama
  • 71 篇 j.d.jackson
  • 71 篇 g.d'ambrosio
  • 71 篇 m.white
  • 71 篇 p.de jong
  • 71 篇 v.burkert
  • 71 篇 kavli ipmu
  • 71 篇 l.pape
  • 71 篇 y.hayato
  • 71 篇 a.v.gritsan
  • 71 篇 a.gurtu
  • 71 篇 m.carena
  • 71 篇 a.masoni
  • 71 篇 s.rolli
  • 71 篇 a.d.martin
  • 71 篇 b.heltsley

语言

  • 593 篇 英文
  • 123 篇 中文
检索条件"作者=Humberto carreras-d.az"
716 条 记 录,以下是31-40 订阅
排序:
A Symbolic-Numeric Approach for Parametrizing Ruled Surfaces
收藏 引用
Journal of Systems Science & Complexity 2020年 第3期33卷 799-820页
作者: PÉREZ-d.az Sonia SHEN Li-Yong dpto.de Física y Matemáticas Universidad de Alcalá28871-Alcaláde HenaresMadridSpain School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China
This paper presents symbolic algorithms to determine whether a given surface(implicitly or parametrically defined)is a rational ruled surface and find a proper parametrization of the ruled ***,in practical application... 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
Paths out of poverty:An eclectic and idiosyncratic review of analytical approaches
收藏 引用
Journal of Integrative Agriculture 2021年 第4期20卷 868-879页
作者: Eugenio d.az-BONILLA Susana CONSTENLA-VILLOSLAdA International Food Policy Research Institute(IFPRI) WashingtonD.C.20005USA
This paper briefly reviews different debates about approaches for paths out of poverty,considering several views,from the analysis of specific policies to more general or systemic *** contribution of this paper is to ... 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
TRANSFORMATION OF FOOd SYSTEMS:HOW CAN IT BE FINANCEd?
收藏 引用
Frontiers of Agricultural Science and Engineering 2023年 第1期10卷 109-123页
作者: Eugenio d.az-BONILLA Inter-American Institute for Cooperation on Agriculture(IICA) Washington DC 20006USA International Food Policy Research Institute(IFPRI) Washington DC 20005USA
The paper provides a review of the work on financing the transformation of food systems done by the author and colleagues at *** analysis discusses the objectives of that transformation(related to the Sustainable deve... 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
Activity optimization method in SPECT:A comparison with ROC analysis
收藏 引用
Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2006年 第12期7卷 947-956页
作者: d.az Marlén Pérez RIZO Oscar d.az d.az Adlin López APARICIO Eric Estévez d.az Reinaldo Roque Center for Studies on Electronics & Info Tech. Images Group Central University of Las Villas Santa Clara 54830 Cuba department of Nuclear Physics Institute for Sciences and Advanced Technology Havana 10400 Cuba department of Nuclear Medicine Cardiovascular Surgery Institute Havana 10400 Cuba department of Nuclear Medicine University Hospital Celestino Hernández Santa Clara 50200 Cuba
A discriminant method for optimizing activity in nuclear medicine studies is validated by comparison with ROC (received operating characteristic)-curves. The method is tested in 21 single photon emission computerize... 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
Foraging, feeding, and physiological stress responses of wild wood mice to increased illumination and common genet cues
收藏 引用
Current Zoology 2018年 第4期64卷 409-417页
作者: Alvaro NAVARRO-CASTILLA Isabel BARJA Mario d.az department of Biology Faculty of Sciences Universidad Autónoma de Madrid C/Darwin 2 Campus Universitario de Cantolanco Madrid 28049 Spain department of Biogeography and Global Change Museo Nacional de Ciencias Naturales CSIC Madrid 28006 Spain
In nature, animals are exposed to a broad range of threats imposed by predators, which may strongly influence the ecology of prey species directly or indirectly by affecting their behavior via fear of predation. Here,... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Neurotrophic fragments as therapeutic alternatives to ameliorate brain aging
收藏 引用
Neural Regeneration Research 2023年 第1期18卷 51-56页
作者: Itzel Ortiz Flores Samuel Treviño Alfonso d.az department of Health Sciences School of MedicineUniversity of the Americas PueblaPueblaMexico Faculty of Chemical Sciences Benemerita Autonomous University of PueblaPueblaMexico
Aging is a global phenomenon and a complex biological process of all living beings that introduces various *** this physiological process,the brain is the most affected organ due to changes in its structural and chemi... 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
Overcast sky condition prevails on and influences the biometeorology of the tropical Andean Páramos
收藏 引用
Journal of Mountain Science 2023年 第1期20卷 78-86页
作者: Paola MONTENEGRO-d.az Rolando CELLERIALVEAR Galo CARRILLO-ROJAS departamento de Recursos Hídricos y Ciencias Ambientales Universidad de CuencaCuenca010207Ecuador Facultad de Ingeniería Universidad de CuencaCuenca010207Ecuador Facultad de Ciencias Químicas Universidad de CuencaCuenca010207Ecuador
Clouds play a major role in modulating the biometeorological processes. We studied the influence of cloudiness on four biometeorological variables:daily air temperature(Tair), relative humidity(RH),reference evapotran... 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
Mycobacterium avium subspecies paratuberculosis and its relationship with Crohn's disease
收藏 引用
World Journal of Gastroenterology 2009年 第4期15卷 417-422页
作者: Juan Luis Mendoza Raquel Lana Manuel d.az-Rubio Inflammatory Bowel disease Unit Department of GastroenterologyHospital Clínico San CarlosUniversidad Complutense department of Internal Medicine Hospital Clínico San CarlosUniversidad Complutense
The hypothesis postulating that Mycobacterium avium paratuberculosis(MAP) is the cause of Crohn's disease(Cd) has been circulating for many *** in molecular techniques,such as polymerase chain reaction and culture met... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Small molecules to prevent the neurodegeneration caused by α-synuclein aggregation
收藏 引用
Neural Regeneration Research 2020年 第12期15卷 2260-2261页
作者: Samuel Pena-d.az Jordi Pujols Salvador Ventura Institut de Biotecnologia i Biomedicina Departament de Bioquímica i Biologia MolecularUniversitat Autònoma de BarcelonaBellaterraSpain
Parkinson’s disease (Pd) is a neurodegenerative disorder belonging to a group of human pathologies known as synucleinopathies,which includes multiple system atrophy or dementia with Lewy bodies (Spillantini et al.,19... 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
Nonlinear numerical assessment of the seismic response of hillside RC buildings
收藏 引用
Earthquake Engineering and Engineering Vibration 2021年 第2期20卷 423-440页
作者: Miguel A.Gómez Edgar Giovanny d.az-Segura Juan Carlos Vielma Civil Engineering School Pontificia Universidad Católica de ValparaísoValparaíso 2340000Chile
Major damage has been reported in hilly areas after major earthquakes,primarily because of two special conditions:the variation in the seismic ground motion due to the inclined ground surface and the irregularities ca... 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