咨询与建议

限定检索结果

文献类型

  • 11,361 篇 期刊文献
  • 6,914 篇 学位论文
  • 472 篇 会议
  • 45 册 图书
  • 5 篇 科技报告
  • 4 篇 成果
  • 3 件 标准

馆藏范围

  • 18,785 篇 电子文献
  • 19 种 纸本馆藏

日期分布

学科分类号

  • 4,844 篇 工学
    • 1,670 篇 材料科学与工程(可...
    • 792 篇 计算机科学与技术...
    • 600 篇 软件工程
    • 589 篇 化学工程与技术
    • 443 篇 电气工程
    • 360 篇 环境科学与工程(可...
    • 301 篇 冶金工程
    • 293 篇 机械工程
    • 236 篇 生物工程
    • 198 篇 电子科学与技术(可...
    • 154 篇 仪器科学与技术
    • 150 篇 信息与通信工程
    • 123 篇 生物医学工程(可授...
  • 4,665 篇 理学
    • 3,126 篇 生物学
    • 844 篇 化学
    • 523 篇 物理学
    • 147 篇 数学
    • 126 篇 生态学
    • 111 篇 地球物理学
  • 3,644 篇 医学
    • 2,061 篇 临床医学
    • 1,010 篇 基础医学(可授医学...
    • 485 篇 药学(可授医学、理...
    • 447 篇 公共卫生与预防医...
    • 220 篇 中西医结合
    • 138 篇 医学技术(可授医学...
  • 967 篇 农学
    • 274 篇 作物学
    • 130 篇 农业资源与环境
  • 413 篇 管理学
    • 276 篇 管理科学与工程(可...
  • 202 篇 教育学
    • 122 篇 教育学
  • 200 篇 经济学
    • 139 篇 应用经济学
  • 127 篇 法学
  • 82 篇 文学
  • 47 篇 历史学
  • 44 篇 哲学
  • 40 篇 艺术学
  • 2 篇 军事学

主题

  • 18,804 篇 c
  • 7,360 篇 a
  • 7,263 篇 n
  • 6,982 篇 e
  • 6,828 篇 i
  • 6,824 篇 s
  • 6,778 篇 o
  • 6,549 篇 l
  • 5,916 篇 ,
  • 5,846 篇 t
  • 5,455 篇 r
  • 4,634 篇 d
  • 4,146 篇 m
  • 3,749 篇 u
  • 3,634 篇 p
  • 3,433 篇 g
  • 3,367 篇 h
  • 2,518 篇 b
  • 2,286 篇 y
  • 2,034 篇 v

机构

  • 147 篇 brno university ...
  • 136 篇 university of ca...
  • 117 篇 harvard universi...
  • 112 篇 state university...
  • 106 篇 the university o...
  • 96 篇 capella universi...
  • 93 篇 columbia univers...
  • 92 篇 yale university
  • 85 篇 the george washi...
  • 84 篇 university of il...
  • 82 篇 indiana universi...
  • 75 篇 university of ph...
  • 69 篇 princeton univer...
  • 68 篇 the university o...
  • 67 篇 ohio state unive...
  • 67 篇 university of ca...
  • 67 篇 university of ne...
  • 61 篇 university of ke...
  • 61 篇 the university o...
  • 59 篇 the university o...

作者

  • 34 篇 chopin j
  • 18 篇 markham kr
  • 16 篇 bouillant ml
  • 15 篇 besson e
  • 13 篇 li yang
  • 13 篇 wang dayong
  • 12 篇 li hejun
  • 12 篇 zhang yulei
  • 11 篇 li longbiao
  • 10 篇 erman je
  • 10 篇 li li
  • 10 篇 liu yang
  • 10 篇 mabry tj
  • 9 篇 wang jing
  • 9 篇 yang yang
  • 8 篇 shingo nakamoto
  • 8 篇 nicola coppola
  • 8 篇 cheng laifei
  • 8 篇 yu ca
  • 8 篇 esmann m

语言

  • 14,026 篇 英文
  • 2,852 篇 中文
  • 1,874 篇 其他
  • 18 篇 荷兰文
  • 14 篇 法文
  • 13 篇 德文
  • 8 篇 日文
  • 5 篇 西班牙文
  • 3 篇 俄文
  • 1 篇 波兰文
  • 1 篇 塞尔维亚文
  • 1 篇 土耳其文
检索条件""
18804 条 记 录,以下是281-290 订阅
排序:
Recovery of Aliphatic Fatty Acids from Red Seaweed champia parvula (c. Agardh) and Its Antifungal Action
收藏 引用
JOURNAL OF AQUATIc FOOD PRODUcT TEcHNOLOGY 2019年 第9期28卷 922-932页
作者: Kumar, Vinoth R. Subbiah, Murugesan Ganesan, Abirami Ramu Pachaiyappas Coll Unit Algal Biotechnol & Bionanotechnol PG & Res Dept Bot Chennai Tamil Nadu India Fiji Natl Univ Dept Food Sci & Home Econ Sch Appl Sci CEST Suva Fiji
The aim of the present study was to evaluate the antifungal activity of seaweed champia parvula and identification of active compounds for this action. In this regard, c. parvula crude extracts were obtained from n-he... 详细信息
来源: 评论
Oxidation protection of B4c modified HfB2-Sic coating for c/c composites at 1073-1473 K
收藏 引用
cERAMIcS INTERNATIONAL 2022年 第3期48卷 3206-3215页
作者: Wang, Peipei Zhang, Menglin Sun, Wanchang Ren, Xuanru Xian Univ Sci & Technol Coll Mat Sci & Engn Xian 710054 Shaanxi Peoples R China China Univ Min & Technol Coll Mat Sci & Engn Xuzhou 221116 Jiangsu Peoples R China
B4c modified HfB2-Sic coating for c/c substrate was designed to expand the application of HfB2-Sic based coating in low-medium temperature environment. The oxidation protection behavior of HfB2-Sic based ceramic coati... 详细信息
来源: 评论
Effects of c/N ratio on anaerobic co-digestion of cabbage, cauliflower, and restaurant food waste
收藏 引用
BIOMASS cONVERSION AND BIOREFINERY 2021年 第5期11卷 2133-2145页
作者: Beniche, I. Hungria, J. El Bari, H. Siles, J. A. chica, A. F. Martin, M. A. Univ Ibn Tofail Kenitra Morocco Lab Renewable Energy & Environm Energy Biomass & Biogas Team Fac Sci BP 133 Kenitra 14000 Morocco Univ Cordoba Dept Chem Engn Campus Univ RabanalesCtra N-4Km 396 Cordoba 14071 Spain
Every day, a large amount of food waste (FW) is generated that causes serious environmental problems such as the production of greenhouse gases and leachate. A possible treatment for this waste is anaerobic digestion ... 详细信息
来源: 评论
A new strategy of reusing abandoned carbon fiber reinforced plastic: Microstructures and properties of c/c composites based on recycled carbon fiber
收藏 引用
JOURNAL OF REINFORcED PLASTIcS AND cOMPOSITES 2021年 第7-8期40卷 294-306页
作者: Guo, Wenjian Bai, Shuxin Ye, Yicong East China Jiao Tong Univ Inst Adv Mat Nanchang 330000 Jiangxi Peoples R China Natl Univ Def Technol Coll Aerosp Sci Changsha Peoples R China
A new strategy of recycling and reusing abandoned carbon fiber reinforced plastics (cFRP) is proposed: cFRPs are first fully carbonized to cF reinforced carbon (c/c) preforms, and then are manufactured into high value... 详细信息
来源: 评论
Octagonal Flower-like cuO/c/NF Nanocomposite as a Self-Supporting Anode for High-Performance Lithium-Ion Batteries
收藏 引用
cHEMELEcTROcHEM 2020年 第19期7卷 4038-4046页
作者: Zhang, Ruili Li, Xuehong Ni, Liping Xie, Anjian Li, Panpan Shen, Yuhua Lao, Li Anhui Univ Coll Chem & Engn Lab Clean Energy & Green Catalysis Hefei 230601 Peoples R China Sino EV Hefei Powertrain Technol Co Ltd Hefei 230601 Peoples R China
At present, the high theoretical specific capacity cuO-based anodes are considered as a potential host for lithium-ion batteries (LIBs). Unfortunately, the intrinsic poor conductivity of metal oxide and the huge volum... 详细信息
来源: 评论
Na3V2(PO4)3/c composites as low-cost and high-performance cathode materials for sodium-ion batteries
收藏 引用
INTERNATIONAL JOURNAL OF ENERGY RESEARcH 2021年 第3期45卷 4534-4542页
作者: Zhu, Limin Ding, Guochun Sun, Qiancheng Xie, Lingling cao, Xiaoyu Henan Univ Technol Sch Chem & Chem Engn Zhengzhou Peoples R China Henan Univ Technol Key Lab High Specif Energy Mat Electrochem Power Zhengzhou 450000 Peoples R China Henan Univ Technol Sch Environm Engn Zhengzhou Peoples R China
The carbon layer acting as a conductive medium is beneficial to overcoming the comparatively inferior electronic conductivity of Na3V2(PO4)(3). Based on this, Na3V2(PO4)(3)/c composites with diverse ratios of citric a... 详细信息
来源: 评论
Preparation and characterization of monolayer oxidation resistant coating on c/Sic composites
收藏 引用
cERAMIcS INTERNATIONAL 2022年 第16期48卷 23731-23739页
作者: Fan, Xizhi Huang, Wenzhi Mao, Weiguo Zhou, Zhe Zhang, Long Zhou, Xin Changsha Univ Sci & Technol Sch Mat Sci & Engn Changsha 410114 Peoples R China Natl Univ Def Technol Coll Aerosp Sci & Engn Sci & Technol Adv Ceram Fibers & Composites Lab Changsha 410073 Peoples R China Yantai Univ Inst Adv Studies Precis Mat Yantai 264005 Peoples R China
Ba0.25Sr0.75Al2Si2O8 (BSAS), Yb2SiO5 and Y2SiO5 are widely deposited as the main phase of composite coatings or as the functional layer in multilayer coatings. The investigation of monolayer coating can not only broad... 详细信息
来源: 评论
Microstructure and water corrosion behavior of (Lu0.2Yb0.2Er0.2Tm0.2Sc0.2)2Si2O7 high-entropy rare-earth disilicate coating for Sic coated c/c composites
收藏 引用
JOURNAL OF THE EUROPEAN cERAMIc SOcIETY 2023年 第8期43卷 3647-3657页
作者: chen, Guohui Zhang, Yulei Guo, Xiaotong Fu, Yanqin Kong, Jing'an Gai, Wenhan Zhang, Pengfei Northwestern Polytech Univ Shaanxi Prov Key Lab Fiber Reinforced Light Compos Xian 710072 Peoples R China
In order to make carbon/carbon composites suitable for application in gas turbine engine, it is necessary to develop environmental barrier coatings (EBcs) to protect them from reacting with water vapor. In our previou... 详细信息
来源: 评论
Fiber orientations effect on process performance for wire cut electrical discharge machining (WEDM) of 2D c/Sic composite
收藏 引用
INTERNATIONAL JOURNAL OF ADVANcED MANUFAcTURING TEcHNOLOGY 2019年 第1-4期102卷 507-518页
作者: He, Wenbin He, Shaotai Du, Jinguang Ming, Wuyi Ma, Jun cao, Yang Li, Xiaoke Zhengzhou Univ Light Ind Henan Prov Key Lab Intelligent Mfg Mech Equipment Zhengzhou 450002 Henan Peoples R China
Adopting orthogonal experiments, relevant machinability in wire cut electrical discharge machining (WEDM) of 2D c/Sic composite was studied. The effects of electrical machining parameters (namely pulse width, pulse in... 详细信息
来源: 评论
Effect of h-BN addition on friction and wear properties of c/c-Sic composites fabricated by LSI
收藏 引用
INTERNATIONAL JOURNAL OF APPLIED cERAMIc TEcHNOLOGY 2022年 第1期19卷 108-118页
作者: Niu, Zi-bo chen, Fu Xiao, Peng Li, Zhuan Pang, Lang Li, Yang Cent South Univ State Key Lab Powder Met Changsha 410083 Peoples R China Cent South Univ Natl Key Lab Sci & Technol Natl Def High Strength Changsha Peoples R China
Hexagonal boron nitride (h-BN) has excellent oxidation resistance, self-healing function, and self-lubricating properties, which can significantly improve the oxidation resistance of c/c-Sic composites in low or mediu... 详细信息
来源: 评论