咨询与建议

限定检索结果

文献类型

  • 2,799,287 篇 期刊文献
  • 19,589 篇 会议
  • 125 篇 学位论文
  • 28 册 图书
  • 8 篇 报纸

馆藏范围

  • 2,819,023 篇 电子文献
  • 14 种 纸本馆藏

日期分布

学科分类号

  • 1,324,649 篇 工学
    • 176,813 篇 材料科学与工程(可...
    • 137,300 篇 化学工程与技术
    • 133,093 篇 机械工程
    • 107,522 篇 计算机科学与技术...
    • 85,036 篇 软件工程
    • 83,807 篇 电气工程
    • 80,003 篇 土木工程
    • 70,391 篇 仪器科学与技术
    • 64,452 篇 动力工程及工程热...
    • 62,635 篇 交通运输工程
    • 61,166 篇 控制科学与工程
    • 58,245 篇 电子科学与技术(可...
    • 57,960 篇 环境科学与工程(可...
    • 54,906 篇 水利工程
    • 50,728 篇 建筑学
  • 787,335 篇 医学
    • 447,137 篇 临床医学
    • 110,431 篇 中西医结合
    • 74,890 篇 公共卫生与预防医...
    • 72,796 篇 药学(可授医学、理...
    • 58,391 篇 中药学(可授医学、...
    • 55,235 篇 医学技术(可授医学...
    • 51,667 篇 基础医学(可授医学...
  • 329,036 篇 理学
    • 74,434 篇 化学
    • 60,766 篇 生物学
  • 260,129 篇 农学
    • 65,363 篇 作物学
    • 56,404 篇 农业资源与环境
  • 227,634 篇 管理学
    • 93,774 篇 管理科学与工程(可...
    • 72,105 篇 公共管理
  • 144,270 篇 教育学
    • 112,271 篇 教育学
  • 95,919 篇 经济学
    • 83,645 篇 应用经济学
  • 71,587 篇 法学
  • 45,717 篇 文学
  • 23,070 篇 艺术学
  • 18,125 篇 历史学
  • 11,944 篇 哲学
  • 9,631 篇 军事学

主题

  • 18,848 篇 数值模拟
  • 17,629 篇 影响因素
  • 12,946 篇 预后
  • 12,381 篇 应用
  • 12,190 篇 儿童
  • 10,757 篇 力学性能
  • 9,675 篇 诊断
  • 9,478 篇 危险因素
  • 9,235 篇 大鼠
  • 8,888 篇 产量
  • 8,881 篇 治疗
  • 8,754 篇 对策
  • 8,749 篇 教学改革
  • 7,818 篇 糖尿病
  • 7,597 篇 磁共振成像
  • 7,441 篇 中国
  • 7,416 篇 稳定性
  • 7,342 篇 综述
  • 7,185 篇 合成
  • 7,039 篇 疗效

机构

  • 17,773 篇 清华大学
  • 17,561 篇 中南大学
  • 16,471 篇 中国科学院大学
  • 15,915 篇 吉林大学
  • 15,538 篇 四川大学
  • 15,104 篇 武汉大学
  • 14,308 篇 北京大学
  • 14,010 篇 天津大学
  • 13,876 篇 上海交通大学
  • 13,637 篇 中国石油大学
  • 13,224 篇 华中科技大学
  • 13,046 篇 中国地质大学
  • 12,857 篇 浙江大学
  • 12,791 篇 中国矿业大学
  • 12,598 篇 同济大学
  • 12,228 篇 华南理工大学
  • 12,190 篇 山东大学
  • 12,163 篇 哈尔滨工业大学
  • 11,968 篇 西安交通大学
  • 11,206 篇 重庆大学

作者

  • 20,076 篇 刘伟
  • 19,199 篇 刘洋
  • 13,286 篇 刘涛
  • 12,460 篇 刘勇
  • 12,214 篇 刘杰
  • 12,142 篇 刘芳
  • 12,024 篇 刘军
  • 11,876 篇 刘静
  • 11,147 篇 刘斌
  • 11,135 篇 刘敏
  • 10,379 篇 刘鹏
  • 10,362 篇 刘强
  • 10,355 篇 刘超
  • 10,227 篇 刘刚
  • 9,641 篇 刘颖
  • 9,629 篇 刘畅
  • 9,459 篇 刘波
  • 9,052 篇 刘辉
  • 8,962 篇 刘佳
  • 8,924 篇 刘磊

语言

  • 2,680,020 篇 中文
  • 138,970 篇 英文
  • 43 篇 日文
  • 2 篇 法文
检索条件"作者=Chang‑Song liu"
2819037 条 记 录,以下是4991-5000 订阅
排序:
Mitochondrial DNA variation analysis suggests extreme low genetic diversity in Guizhou snub-nosed monkeys (Rhinopithecus brelichi)
收藏 引用
Chinese Science Bulletin 2011年 第24期56卷 2541-2544页
作者: PAN HuiJuan SHI FangLei chang ZongFei XIANG ZuoFu SUN TingTing liu ZhiJin LIMing College of Nature Conservation Beijing Forestry University Beijing 100083 China Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Chinese Academy of Sciences Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China College of Life Sciences Central South University of Forestry and Technology Changsha 410004 China College of Life Sciences Center China Normal University Wuhan 430079 China
Guizhou snub-nosed monkey (Rhinopithecus brelichi) is a unique, endangered primate in China, mainly distributed in Fanjing Mountain National Natural Reserve, Guizhou Province, in an area of 275 km2. Recently, habitat ... 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
Working-in-tandem mechanism of multi-dopants in enhancing electrocatalytic nitrogen reduction reaction performance of carbon- based materials
收藏 引用
Nano Research 2021年 第9期14卷 3234-3239页
作者: Wenqing Zhang Keke Mao Jingxiang Low Hengjie liu Yanan Bo Jun Ma Qiaoxi liu Yawen Jiang Jiuzhong Yang Yang Pan Zeming Qi Ran Long Li song Yujie Xiong Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials(iChEM)School of Chemistry and Materials Scienceand National Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefei 230041China School of Energy and Environment Science Anhui University of TechnologyMaanshan 243032China Institute of Energy Hefei Comprehensive National Science CenterHefei 230031China
Developing carbon-based electrocatalysts with excellent N2 adsorption and activation capability holds the key to achieve highly efficient nitrogen reduction reaction(NRR)for reaching its practical ***,we report a high... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
The Cooperation between China and the Gulf Arab States in the Horn of Africa: From the Perspective of the Global South
收藏 引用
Asian Journal of Middle Eastern and Islamic Studies 2023年 第4期17卷 404-427页
作者: chang liu Department of Developing Countries Studies China Institute of International StudiesBeijingChina
At present,the unstoppable rise of the Global South countries and their increasing strategic autonomy has become an important per-spective to understand the current world pattern and regional cooperation,and also brin... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Simultaneous transcatheter arterial chemoembolization and portal vein embolization for patients with large hepatocellular carcinoma before major hepatectomy
收藏 引用
World Journal of Gastroenterology 2020年 第30期26卷 4489-4500页
作者: Cheng-Wu Zhang chang-Wei Dou Xin-Long Zhang Xi-Qiang liu Dong-Shen Huang Zhi-Ming Hu Jie liu Department of Hepatopancreatobiliary Surgery and Minimally Invasive Surgery Zhejiang Provincial People’s HospitalPeople’s Hospital of Hangzhou Medical CollegeHangzhou 310014Zhejiang ProvinceChina Department of General Surgery Aksu Area First HospitalAksu 843000Xinjiang Uygur Autonomous RegionChina
BACKGROUND Sequential transarterial chemoembolization(TACE)and portal vein embolization(PVE)are associated with long time interval that can allow tumor growth and nullify treatments'*** To evaluate the effect of simul... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
高技术虚拟企业利益分配冲突求解系统的构建
收藏 引用
计算机工程与应用 2010年 第28期46卷 17-21页
作者: 刘松 高长元 长江大学管理学院 湖北荆州434023 哈尔滨理工大学管理学院 哈尔滨150080
为支持高技术虚拟企业对利益分配冲突的监控、识别和求解,基于可拓逻辑设计了一套具有较强元决策能力的冲突求解系统。根据发散思维和收敛思维相结合的问题求解框架,构建了利益分配冲突求解系统的体系结构;定义了实时监控利益分配冲突... 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
Evaluation of pharmacokinetics underlies the collaborated usage of lamivudine and oxymatrine in beagle dogs
收藏 引用
Asian Journal of Pharmaceutical Sciences 2016年 第5期11卷 641-647页
作者: Zhenbao Li Lei Shang chang liu Panqin Ma Chunnuan Wu Wenjuan Zhang Yinghua Sun Yongjun Wang Xiaohong liu Jin Sun School of Pharmacy Shenyang Pharmaceutical UniversityNo.103Wenhua RoadShenyang 110016China School of Pharmacy China Medical UniversityNo.77 Puhe RoadShenyang North New AreaShenyang 110122China Kangya of Ningxia Pharmaceuticals Co.Ltd No.57 FuanWest LaneYinchuan 750002China Tianjin Medical University Cancer Hospital Tianjin 300060China Municipal Key Laboratory of Biopharmaceutics School of PharmacyShenyang Pharmaceutical UniversityNo.103Wenhua RoadShenyang 110016China
Combinational therapy of lamivudine and oxymatrine has been employed in the battle against hepatitis B virus in clinical setting. However, the pharmacokinetic behavior of the drug or active metabolism in intravenous/o... 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
An ultra-low concentration electrolyte with fluorine-free bulky anions for stable potassium metal batteries
收藏 引用
Nano Research 2023年 第6期16卷 8290-8296页
作者: Qinguang liu Mei Geng Ting Yu Li Zhang changdong Wu Jie liu Shulin Zhao Qingxin Yang Robin song Jingjuan Ye Fenfen Wang Yuping Wu Dengji Xiao Yuhui Chen State Key Laboratory of Materials-Oriented Chemical Engineering and School of Energy Science and EngineeringNanjing Tech UniversityNanjing 211816China Jiangsu Sunpower Co. Ltd.Taixing 225411China
Potassium metal battery is a promising alternative to Li-ion battery for large-scale energy storage due to the abundant potassium resources and high energy ***,it suffers from rapid capacity fading and safety issues d... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
The dielectric behaviour of doped near-stoichiometric lithium niobate in the terahertz range
收藏 引用
Chinese Physics B 2012年 第1期21卷 476-481页
作者: Wu Liang Ling Fu-Ri Zuo Zhi-Gao liu Jin-song Yao Jian-Quan Wuhan National Laboratory for Optoelectronics School of Optoelectronic Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China College of Precision Instrument and Optoelectronics Engineering Tianjin UniversityTianjin 300072China
The dielectric properties of near-stoichiometric LiNbO3:Fe and LiNbO3:Ce single crystals have been investigated using terahertz time domain spectroscopy in a frequency range of 0.71.6 THz at room temperature. When c... 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
LAND RESOURCES SURVEY BY REMOTE SENSING AND ANALYSIS OF LAND CARRYING CAPACITY FOR POPULATION IN TUMEN RIVER REGION
收藏 引用
Chinese Geographical Science 1996年 第4期6卷 342-350页
作者: Yangzhen Zhang Liping chang Bai Zhang Shuwen Zhang Tieqing Huang Yaqin liu changchun Institute of Geography the Chinese Academy of Sciences Changchun PRC changchun Cadre Secondary Specialized School Industrial and Commercial Bank of China Changchun PRC
The Tumen river region including Yanji,Tumen, Longjing and Hunchun cities is situated in the east part of Jilin *** region is an important economic exploitation area in the province. The total area is 10, 228. 86 *** ... 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
Ribosomal modification protein rimK-like family member A activates betaine-homocysteine S-methyltransferase 1 to ameliorate hepatic steatosis
收藏 引用
Signal Transduction and Targeted Therapy 2024年 第9期9卷 4048-4065页
作者: Han Yan Wenjun liu Rui Xiang Xin Li song Hou Luzheng Xu Lin Wang Dong Zhao Xingkai liu Guoqing Wang Yujing Chi Jichun Yang Department of Physiology and Pathophysiology School of Basic Medical SciencesState Key Laboratory of Vascular Homeostasis and RemodelingCenter for Non-coding RNA MedicinePeking University Health Science CenterBeijing 100191China Department of Endocrinology The Second Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310058China Medical and Health Analysis Center Peking UniversityBeijing 100191China Department of Hepatobiliary Surgery Xi-Jing HospitalFourth Military Medical UniversityXi’an 710032China Department of Endocrinology Beijing Luhe HospitalCapital Medical UniversityBeijing 101100China Department of Hepatobiliary and Pancreatic Surgery General Surgery CentreFirst Hospital of Jilin UniversityChangchun 130061China Key Laboratory of Pathobiology Ministry of Education College of Basic Medical SciencesJilin UniversityChangchun 130012China Department of Central Laboratory and Institute of Clinical Molecular Biology Department of GastroenterologyPeking University People’s HospitalBeijing 100044China Department of Cardiology Peking University Third HospitalBeijing 100191China
Nonalcoholic fatty liver disease(NAFLD)is a serious threat to public health,but its underlying mechanism remains poorly *** screening important genes using Gene Importance Calculator(GIC)we developed previously,riboso... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论