咨询与建议

限定检索结果

文献类型

  • 2,419 篇 期刊文献
  • 1,756 篇 学位论文
  • 53 篇 会议
  • 27 篇 成果
  • 18 册 图书
  • 3 篇 科技报告

馆藏范围

  • 4,269 篇 电子文献
  • 8 种 纸本馆藏

日期分布

学科分类号

  • 1,271 篇 理学
    • 885 篇 生物学
    • 222 篇 化学
    • 95 篇 物理学
    • 85 篇 数学
    • 36 篇 统计学(可授理学、...
  • 741 篇 医学
    • 417 篇 临床医学
    • 326 篇 基础医学(可授医学...
    • 116 篇 药学(可授医学、理...
    • 114 篇 中西医结合
    • 96 篇 医学技术(可授医学...
    • 37 篇 中药学(可授医学、...
    • 34 篇 公共卫生与预防医...
  • 703 篇 工学
    • 137 篇 化学工程与技术
    • 121 篇 材料科学与工程(可...
    • 107 篇 生物医学工程(可授...
    • 58 篇 电气工程
    • 50 篇 环境科学与工程(可...
    • 44 篇 计算机科学与技术...
    • 39 篇 电子科学与技术(可...
    • 37 篇 机械工程
    • 31 篇 生物工程
  • 186 篇 农学
    • 31 篇 作物学
  • 103 篇 经济学
    • 68 篇 应用经济学
    • 33 篇 理论经济学
  • 63 篇 教育学
    • 34 篇 教育学
    • 29 篇 心理学(可授教育学...
  • 59 篇 管理学
    • 33 篇 管理科学与工程(可...
  • 54 篇 法学
    • 32 篇 社会学
  • 52 篇 哲学
    • 49 篇 哲学
  • 39 篇 文学
    • 29 篇 外国语言文学
  • 27 篇 历史学
  • 12 篇 艺术学
  • 2 篇 军事学

主题

  • 4,276 篇 f
  • 1,980 篇 n
  • 1,943 篇 a
  • 1,882 篇 i
  • 1,850 篇 e
  • 1,829 篇 r
  • 1,821 篇 c
  • 1,813 篇 o
  • 1,782 篇 t
  • 1,769 篇 s
  • 1,768 篇 ,
  • 1,690 篇 l
  • 1,462 篇 m
  • 1,258 篇 d
  • 1,238 篇 p
  • 1,133 篇 g
  • 1,121 篇 u
  • 855 篇 h
  • 792 篇 y
  • 706 篇 b

机构

  • 64 篇 the george washi...
  • 59 篇 university of ph...
  • 46 篇 university of ca...
  • 40 篇 state university...
  • 36 篇 capella universi...
  • 32 篇 columbia univers...
  • 32 篇 the university o...
  • 30 篇 yale university
  • 25 篇 utica college
  • 25 篇 northcentral uni...
  • 24 篇 the johns hopkin...
  • 22 篇 princeton univer...
  • 21 篇 walden universit...
  • 21 篇 california state...
  • 21 篇 university of ke...
  • 20 篇 harvard universi...
  • 20 篇 the university o...
  • 19 篇 georgetown unive...
  • 18 篇 university of il...
  • 18 篇 the university o...

作者

  • 12 篇 horton p
  • 10 篇 hodges m
  • 8 篇 graber p
  • 7 篇 martirosov sm
  • 7 篇 allen jf
  • 7 篇 godinot c
  • 7 篇 harris da
  • 7 篇 ernster l
  • 6 篇 trchounian aa
  • 6 篇 barber j
  • 6 篇 grivas s
  • 6 篇 houstek j
  • 6 篇 vignais pv
  • 6 篇 sandip basu
  • 6 篇 wollman fa
  • 6 篇 golbeck jh
  • 6 篇 futai m
  • 6 篇 briantais jm
  • 6 篇 milgrom ym
  • 6 篇 gautheron dc

语言

  • 3,119 篇 英文
  • 745 篇 其他
  • 391 篇 中文
  • 11 篇 荷兰文
  • 5 篇 法文
  • 4 篇 西班牙文
  • 3 篇 德文
  • 2 篇 俄文
  • 1 篇 捷克文
  • 1 篇 波兰文
检索条件""
4276 条 记 录,以下是261-270 订阅
排序:
The effect of riboflavin supplementation on the systemic redox status in healthy volunteers: A post-hoc analysis of the RIBOGUT trial
收藏 引用
fREE RADICAL BIOLOGY AND MEDICINE 2022年 第0期190卷 169-178页
作者: Bourgonje, Arno R. Otten, Antonius T. Sadabad, Mehdi Sadaghian von Martels, Julius Z. H. Bulthuis, Marian L. C. faber, Klaas Nico van Goor, Harry Dijkstra, Gerard Harmsen, Hermie J. M. Univ Groningen Univ Med Ctr Groningen Dept Gastroenterol & Hepatol Groningen Netherlands Univ Groningen Univ Med Ctr Groningen Dept Med Microbiol Groningen Netherlands Univ Groningen Univ Med Ctr Groningen Dept Pathol & Med Biol Groningen Netherlands Univ Groningen Univ Med Ctr Groningen Dept Med Microbiol POB 30-001 NL-9700 RB Groningen Netherlands
Background: Riboflavin is a redox-active vitamin that plays a pivotal role in human energy metabolism. Riboflavin may have beneficial health effects by increasing extracellular antioxidant capacity, thereby alleviatin... 详细信息
来源: 评论
The genetic basis and adult reproductive consequences of developmental thermal plasticity
收藏 引用
JOURNAL Of ANIMAL ECOLOGY 2022年 第6期91卷 1119-1134页
作者: Rodrigues, Leonor R. Zwoinska, Martyna K. Wiberg, R. Axel W. Snook, Rhonda R. Stockholm Univ Dept Zool Stockholm Sweden Univ Basel Zool Inst Basel Switzerland
Increasing temperature and thermal variability generate profound selection on populations. Given the fast rate of environmental change, understanding the role of plasticity and genetic adaptation in response to increa... 详细信息
来源: 评论
Phytochemical analysis on the leaves of Agathis microstachya Jf Bailey & CT White
收藏 引用
NATURAL PRODUCT RESEARCH 2022年 第21期36卷 5626-5630页
作者: frezza, Claudio Sciubba, fabio Petrucci, Rita Serafini, Mauro Univ Roma La Sapienza Dipartimento Biol Ambientale Rome Italy Sapienza Univ Rome NMR Based Metabol Lab NMLab Rome Italy Univ Roma La Sapienza Dipartimento Sci Base & Applicate Ingn Rome Italy
The first phytochemical analysis on the leaves of Agathis microstachya J.f. Bailey & C.T. White collected in Rome was reported in this work. The study evidenced the presence of four compounds i.e., 7,4''&#... 详细信息
来源: 评论
Resequencing the Yaroslavl cattle genomes reveals signatures of selection and a rare haplotype on BTA28 likely to be related to breed phenotypes
收藏 引用
ANIMAL GENETICS 2022年 第5期53卷 680-684页
作者: Ruvinskiy, Daniil Igoshin, Alexander Yurchenko, Andrey Ilina, Anna, V Larkin, Denis M. Russian Acad Sci ICG SB RAS Siberian Branch Fed Res Ctr Inst Cytol & Genet Novosibirsk Russia Russian Acad Sci Siberian Branch Inst Cytol & Genet Kurchatov Genom Ctr Novosibirsk Russia Sci Res Inst Livestock Breeding & Forage Prod Fed Williams Res Ctr Forage Prod & Agroecol Yaroslavl Yaroslavl Regio Russia Univ London Royal Vet Coll London England
The genomes of local livestock could shed light on their genetic history, mechanisms of adaptations to environments and unique genetics. Herein we look into the genetics and adaptations of the Russian native dairy Yar... 详细信息
来源: 评论
from shipwreck to commodity exchange: Robinson Crusoe, Hegel and Marx
收藏 引用
PHILOSOPHY & SOCIAL CRITICISM 2022年 第9期48卷 1302-1328页
作者: Lazarus, Michael Monash Univ Melbourne Vic Australia
Robinson Crusoe is a mythic character who lives not only in the popular imaginary but through the history of political and social thought. Defoe's protagonist lives marooned on his island, isolated and apart from ... 详细信息
来源: 评论
Molecular and pathogenic characterization of fusarium oxysporum and fusarium proliferatum causing basal root rot in garlic in Turkey
收藏 引用
AUSTRALASIAN PLANT DISEASE NOTES 2022年 第1期17卷 1-6页
作者: Dedecan, Olcay Talapov, Talap Demral, Meral Sarpkaya, Kamil Ceyhan, Derya Isler Can, Canan Gaziantep Univ Biol Dept Gaziantep Turkey Karabuk Univ Fac Forestry Karabuk Turkey
Diseases caused by fusarium species in garlic, which is among the products of economic importance, cause serious yield losses. While the isolation and characterization of fusarium species has mostly been done from clo... 详细信息
来源: 评论
Azole antifungal resistance in fungal isolates from wastewater treatment plant effluents
收藏 引用
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 2021年 第3期28卷 3217-3229页
作者: Assress, Hailemariam Abrha Selvarajan, Ramganesh Nyoni, Hlengilizwe Ogola, Henry Joseph Oduor Mamba, Bhekie B. Msagati, Titus A. M. Univ South Africa Coll Sci Engn & Technol Nanotechnol & Water Sustainabil Res Unit UNISA Sci CampusPOB 392UNISA 0003Florida Pk ZA-1709 Johannesburg South Africa Univ South Africa Coll Agr & Environm Sci UNISA Sci CampusPOB 392UNISA 0003 ZA-1709 Johannesburg South Africa Natl Ctr Int Joint Res Membrane Sci & Technol State Key Lab Separat Membranes & Membrane Proc Tianjin 300387 Peoples R China Nelson Mandela African Inst Sci & Technol Sch Life Sci & Bioengn POB 447 Arusha Tanzania
Wastewater treatment plants (WWTPs) can be significant sources of antifungal resistant fungi, which can disseminate further in the environment by getting into rivers together with effluents discharged from WWTPs and p... 详细信息
来源: 评论
A Comprehensive Gate and Drain Trapping/Detrapping Noise Model and its Implications for Thin-Dielectric MOSfETs
收藏 引用
IEEE TRANSACTIONS ON ELECTRON DEVICES 2021年 第10期68卷 4826-4833页
作者: Asanovski, Ruben Palestri, Pierpaolo Caruso, Enrico Selmi, Luca Univ Modena & Reggio Emilia DIEF I-41121 Modena Italy Univ Udine DPIA I-33100 Udine Italy Infineon Technol AG A-9500 Villach Austria
We derive a complete set of expressions for the MOSfET gate and drain power spectral densities due to elastic and inelastic trapping/detrapping of channel carriers into the gate dielectric. Our calculations explain tr... 详细信息
来源: 评论
The impact of banking competition on firm total factor productivity
收藏 引用
ECONOMIC RESEARCH-EKONOMSKA ISTRAZIVANJA 2022年 第1期35卷 4008-4028页
作者: Liu, Peisen Li, Houjian Southwest Univ Coll Econ & Management Chongqing Peoples R China Southwest Univ Ctr Inclus Finance & Agr & Rural Dev Chongqing Peoples R China Sichuan Agr Univ Coll Econ Chengdu Peoples R China
The benefits of financial development to economic growth are conspicuous, but due to the heterogeneity across regions and firms, the effects of financial competition have not been fully proved. There is a puzzling phe... 详细信息
来源: 评论
Does a higher minimum wage accelerate labour division in agricultural production? Evidence from the main rice-planting area in China
收藏 引用
ECONOMIC RESEARCH-EKONOMSKA ISTRAZIVANJA 2022年 第1期35卷 2984-3010页
作者: Guo, Lili Duan, Xiaoyu Li, Houjian Yang, Wanjiang Ren, Yanjun Guo, Yangli Sichuan Agr Univ Coll Econ Chengdu Peoples R China Southwestern Univ Finance & Econ Coll Econ Chengdu Peoples R China Zhejiang Univ China Acad Rural Dev Hangzhou Peoples R China Leibniz Inst Agr Dev Transit Econ IAMO Halle Germany Southwest Jiaotong Univ Sch Econ & Management Chengdu Peoples R China
Agricultural production outsourcing, a new means of agricultural production, can optimise the allocation of resources, reduce agricultural production costs, and improve agricultural productivity. However, farmers'... 详细信息
来源: 评论