咨询与建议

限定检索结果

文献类型

  • 5,212,377 篇 期刊文献
  • 39,703 篇 会议
  • 448 册 图书
  • 263 篇 学位论文
  • 12 篇 报纸
  • 1 篇 多媒体

馆藏范围

  • 5,252,538 篇 电子文献
  • 273 种 纸本馆藏

日期分布

学科分类号

  • 2,375,376 篇 工学
    • 308,237 篇 材料科学与工程(可...
    • 251,672 篇 化学工程与技术
    • 238,001 篇 机械工程
    • 200,730 篇 计算机科学与技术...
    • 157,264 篇 软件工程
    • 148,199 篇 电气工程
    • 141,891 篇 土木工程
    • 128,953 篇 仪器科学与技术
    • 111,753 篇 动力工程及工程热...
    • 111,416 篇 交通运输工程
    • 110,535 篇 控制科学与工程
    • 105,967 篇 电子科学与技术(可...
    • 104,592 篇 环境科学与工程(可...
    • 99,932 篇 水利工程
  • 1,515,487 篇 医学
    • 856,695 篇 临床医学
    • 208,559 篇 中西医结合
    • 149,019 篇 公共卫生与预防医...
    • 142,251 篇 药学(可授医学、理...
    • 111,057 篇 中药学(可授医学、...
    • 105,297 篇 医学技术(可授医学...
    • 99,708 篇 基础医学(可授医学...
    • 92,230 篇 护理学(可授医学、...
  • 609,651 篇 理学
    • 138,799 篇 化学
    • 116,843 篇 生物学
  • 483,314 篇 农学
    • 122,818 篇 作物学
    • 102,324 篇 农业资源与环境
  • 435,198 篇 管理学
    • 176,731 篇 管理科学与工程(可...
    • 137,463 篇 公共管理
  • 282,747 篇 教育学
    • 221,826 篇 教育学
  • 181,236 篇 经济学
    • 158,150 篇 应用经济学
  • 139,579 篇 法学
  • 95,879 篇 文学
  • 43,858 篇 艺术学
  • 35,934 篇 历史学
  • 23,529 篇 哲学
  • 17,581 篇 军事学

主题

  • 33,098 篇 影响因素
  • 32,534 篇 数值模拟
  • 24,352 篇 应用
  • 23,638 篇 预后
  • 23,023 篇 儿童
  • 19,036 篇 诊断
  • 18,237 篇 对策
  • 18,212 篇 力学性能
  • 17,650 篇 治疗
  • 17,612 篇 大鼠
  • 17,581 篇 危险因素
  • 16,939 篇 产量
  • 16,732 篇 教学改革
  • 14,984 篇 糖尿病
  • 14,645 篇 护理
  • 14,430 篇 中国
  • 14,155 篇 疗效
  • 13,990 篇 综述
  • 13,842 篇 磁共振成像
  • 13,730 篇 大学生

机构

  • 30,881 篇 四川大学
  • 30,585 篇 清华大学
  • 29,316 篇 上海交通大学
  • 27,897 篇 浙江大学
  • 27,658 篇 中南大学
  • 27,325 篇 中国科学院大学
  • 26,276 篇 武汉大学
  • 26,257 篇 吉林大学
  • 25,681 篇 同济大学
  • 24,634 篇 北京大学
  • 23,666 篇 天津大学
  • 22,839 篇 华中科技大学
  • 22,810 篇 中国矿业大学
  • 22,380 篇 中国石油大学
  • 22,356 篇 西安交通大学
  • 22,102 篇 哈尔滨工业大学
  • 22,084 篇 中国地质大学
  • 21,950 篇 华南理工大学
  • 20,667 篇 山东大学
  • 20,352 篇 西北工业大学

作者

  • 23,070 篇 李伟
  • 19,203 篇 李强
  • 18,571 篇 李静
  • 17,101 篇 李军
  • 16,918 篇 李娜
  • 15,517 篇 李敏
  • 15,013 篇 李明
  • 14,415 篇 李勇
  • 14,035 篇 李鹏
  • 14,014 篇 李涛
  • 13,437 篇 李斌
  • 13,244 篇 李刚
  • 13,170 篇 李杰
  • 13,130 篇 李莉
  • 12,930 篇 李娟
  • 12,665 篇 李宁
  • 12,455 篇 张丽
  • 11,583 篇 李辉
  • 11,576 篇 王丽
  • 11,482 篇 李超

语言

  • 5,009,100 篇 中文
  • 243,578 篇 英文
  • 113 篇 日文
  • 5 篇 法文
检索条件"作者=Jiang, De-Li"
5252804 条 记 录,以下是1-10 订阅
排序:
Phase Transfer Catalyzed Synthesis of 1, 2-Bis[(3-aryl)-s-triazolo-[3, 4-b]-[1, 3, 4]thiadiazole-6-yl]ethanes
收藏 引用
Chinese Chemical Letters 2006年 第6期17卷 755-756页
作者: de jiang li He Qing FU department of Chemistry Yunyang Teachers College Hubei 442700 Instiute of Chemical Engineering South China University of Technology Guangzhou 510640
A series of new 1, 2-bis[(3-aryl)-s-triazolo[3, 4-b]-[1, 3, 4]thiadiazole-6-yl]ethanes were synthesized in 50-82% yield by cyclization of 3-aryl-4-amino-5-mercapto-1, 2, 4-triazole with butanedioic acid in the prese... 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
Synthesis of 1, 4-Bis[3-N-propionyl-2-aryl-1, 3, 4- oxadiazoline-5-yl]phenylenes
收藏 引用
Chinese Chemical Letters 2006年 第5期17卷 625-627页
作者: de jiang li He Qing FU departrnent of Chemistry Yunyang Teachers College Hubei 442700 Institute of Chemical Engineering South China University of Technology Guangzhou 510640
1, 4-Bis[3-N-propionyl-2-aryl-1, 3, 4-oxadiazoline-5-yl]phenylenes 4 were synthesized by cyclization of corresponding hydrazones 3 with propionic anhydride.
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
Synthesis and Fungicidal Activities of 2-Alkylthio-5-(3,4,5-tribenzyloxyphenyl)-1,3,4-oxadiazoles
收藏 引用
Chinese Chemical Letters 2006年 第11期17卷 1427-1430页
作者: de Qing LONG de jiang li Wei Quan CAI Sheng Sheng CHEN department of Chemistry Yunyang Teachers College Hubei 442700 College of Chemical Engineering Wuhan University of Technology Wuhan 430070
Abstract: Ten novel 2-alkylthio-5-(3, 4, 5-tribenzyloxyphenyl)-1, 3, 4-oxadiazole derivatives (5a-j) were synthesized from methyl 3, 4, 5-trihydroxybenzoate by ethedfication, hydrazidation, cyclization and thioet... 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
To improve robustness of mechanical properties of semi-solid cast A356 alloy using taguchi design method
收藏 引用
China Foundry 2024年 第2期21卷 175-184页
作者: Yi-wu Xu Hong-yi Zhan Wei Tong Jin-ping li Le-peng Zhang de-jiang li Xiao-qin Zeng School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China China Science Lab General Motors Global Research&DevelopmentShanghai 201206China General Motors(China)Investment Co. Ltd.Shanghai 201206China China International Intellectech Corporation(CIIC) Beijing 100004China
Mechanical properties of semi-solid casting are dependent on multiple processing parameters,and improper processing parameters will not only reduce mean data but also increase *** present study investigated the impact... 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
Effects of Ce content on the modification of Mg_(2)Si phase in Mg-5Al-2Si alloy
收藏 引用
Journal of Magnesium and Alloys 2023年 第7期11卷 2299-2311页
作者: Bo Hu Wen-Jie Zhu Zi-Xin li Seul Bi Lee de-jiang li Xiao-Qin Zeng Yoon Suk Choi National Engineering Research Center of light Alloy Net Forming School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China School of Materials Science and Engineering Pusan National UniversityBusan 46241Republic of Korea The State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University800 Dongchuan RoadShanghai 200240China
The effect of Ce content(0–1.6 wt.%)on the modification of Mg_(2)Si phase in the as-cast Mg-5Al-2Si alloy was *** original Chinese script type Mg_(2)Si phase was refined distinctly and transformed to dispersive block... 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
First-principles Calculations of Strengthening Compounds in Magnesium Alloy: A General Review
收藏 引用
Journal of Materials Science & Technology 2016年 第12期32卷 1222-1231页
作者: Yong liu Hui Ren Wen-Cheng Hu de-jiang li Xiao-Oin Zeng Ke-Gang Wang Jian Lu Key Laboratory of Near Net Forming of jiangxi Province. Nanchang University Nanchang 330031 China National Engineering Research Center of light Alloys Net Forming Shanghai Jiao Tong University Shanghai 200240 China State Key Laboratories of Metal Matrix Composite Shanghai Jiao Tong University Shanghai 200240 China Mechanical and Aerospace Engineering department Florida Institute of Technology Melbourne FL 32901 USA department of Mechanical and Biomedical Engineering City University of Hong Kong Kowloon Hong Kong China Centre for Advanced Structural Materials City University of Hong Kong Shenzhen Research Institute 8 Yuexing 1st Road Shenzhen Hi-Tech Industrial Park Nanshon District Shenzhen China
First-principles computation methods play an important role in developing and designing new magnesium *** this article,we present an overview of the first-principles modeling techniques used in recent years to simulat... 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
MRI shows clodronate-liposomes attenuating liver injury in rats with severe acute pancreatitis
收藏 引用
Hepatobiliary & Pancreatic Diseases International 2010年 第2期9卷 192-200页
作者: Zhang, Jian-Xin Dang, Sheng-Chun Zhang, Yong Sha, Xin Zhang, li-Rong Wei, Chuan-She Chen, Min jiang, de-li jiangsu Univ Affiliated Hosp Dept Gen Surg Zhenjiang 212001 Peoples R China jiangsu Univ Affiliated Hosp Dept MRI Zhenjiang 212001 Peoples R China jiangsu Univ Sch Chem & Chem Engn Zhenjiang 212013 Peoples R China
BACKGROUND: Studies have revealed that macrophages play an important role in the development of severe acute pancreatitis (SAP). Activated macrophages can lead to a systemic inflammatory response, induce lipid peroxid... 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
Atomic relaxation,stability and electronic properties of Mg2Sn(100)surfaces from ab-initio calculations
收藏 引用
Journal of Magnesium and Alloys 2016年 第1期4卷 62-67页
作者: Hui Ren Wen-Cheng Hu de-jiang li Xiao-Qin Zeng Xue Yang Xiao-Shu Zeng Xiang-Jie Yang Bolong Huang Yong liu Key Laboratory of Near Net Forming of jiangxi Province Nanchang UniversityNanchang 330031China National Engineering Research Center of light Alloys Net Forming Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratories of Metal Matrix Composite Shanghai Jiao Tong UniversityShanghai 200240China department of Physics and Materials Science City University of Hong KongKowloonHong Kong
Mg2Sn(100)surfaces were investigated using ab-initio method based on density functional theory in order to explore the surface *** is found that both the eleven-layers for Mg-termination surfaces and the nine-layers f... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Mitigated calcification of glutaraldehyde-fixed bovine pericardium by tannic acid in rats
收藏 引用
Chinese Medical Journal 2008年 第17期121卷 1675-1679页
作者: WANG de jiang Hong li Jun ZHOU Jian-ye HU Sheng-shou Research Center for Cardiovascular Regenerative Medicine Ministry of Health Cardiovascular Institute and Fuwai Hospital Peking Union Medical College and Chinese Academy of Medical Sciences Beijing 100037 China
Background Bioprosthetic heart valves derived from glutaraldehyde (Glut)-fixed xenografts have been widely used to replace diseased cardiac valves. However, calcification and degeneration are common following their ... 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
Constraints on holographic QCD phase transitions from PTA observations
收藏 引用
Science China(Physics,Mechanics & Astronomy) 2025年 第1期Mechanics & Astronomy) .卷 71-78页
作者: Song He li li Sai Wang Shao-jiang Wang Center for Theoretical Physics and College of Physics Jilin University School of Physical Science and Technology Ningbo University Max Planck Institute for Gravitational Physics (Albert Einstein Institute) CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) School of Physical Sciences University of Chinese Academy of Sciences (UCAS) Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences
The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been prop... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论