咨询与建议

限定检索结果

文献类型

  • 927,935 篇 期刊文献
  • 7,509 篇 会议
  • 4 篇 学位论文
  • 3 册 图书

馆藏范围

  • 935,449 篇 电子文献
  • 2 种 纸本馆藏

日期分布

学科分类号

  • 410,350 篇 工学
    • 74,438 篇 材料科学与工程(可...
    • 61,724 篇 化学工程与技术
    • 50,188 篇 机械工程
    • 39,735 篇 电气工程
    • 38,264 篇 计算机科学与技术...
    • 29,852 篇 电子科学与技术(可...
    • 28,232 篇 环境科学与工程(可...
    • 26,869 篇 动力工程及工程热...
    • 23,295 篇 仪器科学与技术
    • 23,061 篇 生物医学工程(可授...
    • 23,050 篇 软件工程
    • 22,631 篇 控制科学与工程
    • 22,357 篇 土木工程
    • 20,880 篇 水利工程
    • 20,701 篇 食品科学与工程(可...
  • 355,981 篇 医学
    • 212,081 篇 临床医学
    • 49,834 篇 中西医结合
    • 44,299 篇 药学(可授医学、理...
    • 44,258 篇 公共卫生与预防医...
    • 36,219 篇 基础医学(可授医学...
    • 28,622 篇 中药学(可授医学、...
    • 27,018 篇 医学技术(可授医学...
  • 185,355 篇 理学
    • 65,668 篇 化学
    • 53,161 篇 生物学
    • 40,470 篇 物理学
  • 115,279 篇 农学
    • 35,969 篇 作物学
    • 23,414 篇 农业资源与环境
  • 55,570 篇 管理学
    • 21,821 篇 管理科学与工程(可...
    • 20,477 篇 公共管理
  • 37,873 篇 教育学
    • 27,750 篇 教育学
  • 18,636 篇 经济学
  • 12,401 篇 法学
  • 9,461 篇 文学
  • 5,247 篇 艺术学
  • 3,421 篇 历史学
  • 2,193 篇 军事学
  • 2,118 篇 哲学

主题

  • 6,566 篇 影响因素
  • 5,615 篇 儿童
  • 5,570 篇 预后
  • 5,154 篇 数值模拟
  • 4,690 篇 大鼠
  • 4,417 篇 危险因素
  • 4,213 篇 产量
  • 3,795 篇 诊断
  • 3,500 篇 应用
  • 3,430 篇 力学性能
  • 3,376 篇 糖尿病
  • 3,224 篇 细胞凋亡
  • 3,164 篇 治疗
  • 2,945 篇 磁共振成像
  • 2,862 篇 合成
  • 2,723 篇 护理
  • 2,572 篇 高效液相色谱法
  • 2,512 篇 凋亡
  • 2,406 篇 疗效
  • 2,390 篇 教学改革

机构

  • 5,902 篇 吉林大学
  • 5,761 篇 浙江大学
  • 5,443 篇 中国科学院大学
  • 5,425 篇 四川大学
  • 5,366 篇 上海交通大学
  • 4,922 篇 北京大学
  • 4,632 篇 清华大学
  • 4,552 篇 中南大学
  • 4,308 篇 天津大学
  • 4,160 篇 西安交通大学
  • 4,032 篇 中国地质大学
  • 4,010 篇 山东大学
  • 3,911 篇 北京中医药大学
  • 3,864 篇 同济大学
  • 3,824 篇 西北农林科技大学
  • 3,799 篇 中国石油大学
  • 3,708 篇 中国矿业大学
  • 3,686 篇 中国农业大学
  • 3,611 篇 哈尔滨工业大学
  • 3,598 篇 华中科技大学

作者

  • 9,355 篇 李艳
  • 7,767 篇 李岩
  • 7,735 篇 李燕
  • 4,692 篇 李旭
  • 3,593 篇 李伟
  • 3,372 篇 张旭
  • 3,266 篇 李妍
  • 3,133 篇 王艳
  • 3,116 篇 王燕
  • 3,057 篇 张艳
  • 3,022 篇 李静
  • 2,994 篇 李强
  • 2,852 篇 李军
  • 2,809 篇 王旭
  • 2,779 篇 张燕
  • 2,683 篇 李娜
  • 2,535 篇 刘艳
  • 2,312 篇 李敏
  • 2,158 篇 李刚
  • 2,064 篇 李明

语言

  • 881,923 篇 中文
  • 53,521 篇 英文
  • 7 篇 日文
检索条件"作者=li-xu yan"
935451 条 记 录,以下是81-90 订阅
排序:
Veratrilla baillonii Franch alleviate the symptoms of diabetes in type 2 diabetic rats induced by high-fat diet and streptozotocin
收藏 引用
Food Science and Human Wellness 2024年 第3期13卷 1378-1389页
作者: Chunlan yan Zhihao Zhang liqun Ma Xinyi xu Muhammad Azhar Xianju Huang Jianxun Shi Jun li College of life Sciences South-Central Minzu UniversityWuhan 430074China College of Pharmaceutical Science South-Central Minzu UniversityWuhan 430074China Department of Biosciences COMSATS University IslamabadSahiwal 57000Pakistan Zhejiang Pharmaceutical University Ningbo 315100China Ethnopharmacology Level 3 Laboratory National Administration of Traditional Chinese MedicineSouth-Central Minzu UniversityWuhan 430074China
Our previous research studies have shown that Veratrilla baillonii Franch,a food supplement used by ethnic minorities in Southwest China,has multiple pharmacological activities,such as detoxification,antiinflammatory,... 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 overview and perspective of identifying lunar craters
收藏 引用
Science China Earth Sciences 2024年 第5期67卷 1395-1416页
作者: yan JIANG Changyi xu ling CHEN State Key Laboratory of lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100029China Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100049China
The spatiotemporal evolution of lunar impact craters is crucial for investigating lunar interior structure,internal and external dynamic processes,and interplanetary impact *** in lunar crater identification are revie... 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
Optimal proportioning of iron ore in sintering process based on improved multi-objective beluga whale optimisation algorithm
收藏 引用
Journal of Iron and Steel Research(International) 2024年 第7期31卷 1597-1609页
作者: Zong-ping li xu-dong li xue-tong yan Wu Wen Xiao-xin Zeng Rong-jia Zhu Ya-hui Wang ling-zhi Yi Zhongye Changtian International Engineering Co. Ltd.Changsha 410205HunanChina College of Automation and Electronic Information Xiangtan UniversityXiangtan 411105HunanChina College of Electrical and Information Engineering Hunan UniversityChangsha 410082HunanChina
Proportioning is an important part of sintering,as it affects the cost of sintering and the quality of sintered *** address the problems posed by the complex raw material information and numerous constraints in the si... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
A calibration and compensation method for an industrial robot with high accuracy harmonic reducers
收藏 引用
Science China(Technological Sciences) 2024年 第3期67卷 725-739页
作者: ZHAO Yiyang liU xun CAO JiaBin liU JinYu xu yan yan WeiXin School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China College of Computer and Control Engineering Northeast Forestry UniversityHarbin 150040China
Industrial serial robots need high stiffness to keep absolute pose accuracy and meet the requirements in practical applications. However, the weak stiffness feature of robot joints and the payloads affected on robot e... 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 同方期刊数据库 同方期刊数据库 评论
Association between childhood obesity and gut microbiota:16S rRNA gene sequencing-based cohort study
收藏 引用
World Journal of Gastroenterology 2024年 第16期30卷 2249-2257页
作者: xu-Ming li Qing Lv Ya-Jun Chen Lu-Biao yan Xin Xiong Laboratory Department Nanjing Medical University Affiliated Obstetrics and Gynecology Hospital(Nanjing Maternal and Child Health Hospital)Nanjing 210004Jiangsu ProvinceChina Department of Pediatrics Shenzhen University General HospitalShenzhen 518055Guangdong ProvinceChina Department of Inspection Division Women’s Hospital of Nanjing Medical University(Nanjing Maternity and Child Health Care Hospital)Nanjing 210004Jiangsu ProvinceChina Department of Pediatrics Women’s Hospital of Nanjing Medical University(Nanjing Maternity and Child Health Care Hospital)Nanjing 210004Jiangsu ProvinceChina Department of Neonatology Chenzhou First People’s HospitalChenzhou 423000Hunan ProvinceChina
BACKGROUND This study aimed to identify characteristic gut genera in obese and normal-weight children(8-12 years old)using 16S rDNA *** research aimed to provide insights for mechanistic studies and prevention strateg... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Prediction of pathological complete response and prognosis in locally advanced rectal cancer
收藏 引用
World Journal of Gastrointestinal Oncology 2024年 第6期16卷 2520-2530页
作者: Yi-Jun xu Dan Tao Song-Bing Qin Xiao-yan xu Kai-Wen yang Zhong-xu Xing Ju-Ying Zhou yang Jiao li-li Wang Department of Radiation Oncology The First Affiliated Hospital of Soochow UniversitySuzhou 215006Jiangsu ProvinceChina Department of Radiation Oncology The Fourth Affiliated Hospital of Soochow UniversitySuzhou 215006Jiangsu ProvinceChina School of Radiation Medicine and Protection Medical College of Soochow UniversitySuzhou 215123Jiangsu ProvinceChina
BACKGROUND Colorectal cancer is currently the third most common malignant tumor and the second leading cause of cancer-related death *** chemoradiotherapy(nCRT)is standard for locally advanced rectal cancer(LARC).Exce... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
A MOF/poly(thioctic acid)composite for enhanced gold extraction from water matrices
收藏 引用
Nano Research 2024年 第1期17卷 382-389页
作者: Ruiqing li Sen yan Tianwei xue Rongxing Qiu Yin li Wenli Hao Guangkuo xu yanliang Wang yanzhen Hong Yuzhong Su Hongtao Wang Shuliang yang li Peng Jun li College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China Department of Chemical Physics University of Science and Technology of ChinaHefei 230026China College of Energy Xiamen UniversityXiamen 361005China National Engineering Laboratory for Green Chemical Productions of Alcohols Ethers and EstersXiamen UniversityXiamen 361005China Collaborative Innovation Center of Chemistry for Energy Materials Xiamen UniversityXiamen 361005China
With the fast generation of electronic waste(e-waste)and the increasing depletion of metal resources,“urban mining”that can selectively recover gold from secondary resources has attracted great *** of materials with... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Magmatic-tectonic response of the South China Craton to the Paleo-Pacific subduction during the Triassic:a new viewpoint based on Well NK-1
收藏 引用
Journal of Oceanology and limnology 2024年 第1期42卷 58-89页
作者: Chan WANG Hao liU Gang li Zhen SUN Tingting GONG li MIAO Xiaowei ZHU Yunying ZHANG Weihai xu Wen yan Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Key Laboratory of Tectonic Controlled Mineralization and Oil Reservoir of Ministry of Natural Resources Chengdu University of TechnologyChengdu 610059China School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China College of Earth Science Chengdu University of TechnologyChengdu 610059China University of Chinese Academy of Sciences Beijing 100049China
The Nansha Block(NB)is one of the blocks separated from the southern margin of the South China Craton(SCC)by the western Pacific subduction,which contains rich information of geodynamic and tectonic *** reveal the ess... 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
The cytosolic isoform of triosephosphate isomerase,ZmTPI4,is required for kernel development and starch synthesis in maize(Zea mays L.)
收藏 引用
The Crop Journal 2024年 第2期12卷 401-410页
作者: Wenyu li Han Wang Qiuyue xu Long Zhang yan Wang Yongbiao Yu Xiangkun Guo Zhiwei Zhang Yongbin Dong Yuling li State Key Laboratory of Wheat and Maize Crop Science Collaborative Innovation Center of Henan Grain CropsCollege of AgronomyHenan Agricultural UniversityLongzi Lake CampusZhengzhou 450046HenanChina
Triosephosphate isomerase(TPI)is an enzyme that functions in plant energy production,accumulation,and *** understand its function in maize,we characterized a maize TPI mutant,*** comparison to the wild type,zmtpi4 mut... 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
Association between the cumulative triglyceride-glucose index and the recurrence of atrial fibrillation after radiofrequency catheter ablation
收藏 引用
Journal of Geriatric Cardiology 2024年 第2期21卷 200-210页
作者: Qing yan Jia-Qi liANG Yi-De YUAN Yuan li Jia-li FAN Wen-Huan WU Pan xu Jia-Hong xuE Department of Cardiovascular Medicine the Second Affiliated Hospital of Xi’an Jiaotong UniversityShaanxiChina Department of Cardiovascular Medicine Zichang People’s HospitalShaanxiChina Department of Ultrasound Xijing HospitalAir Force Military Medical UniversityShaanxiChina
BACKGROUND Triglyceride-glucose(TyG)index values are a new surrogate marker for insulin *** study aimed to explore the relationship between cumulative TyG index values and atrial fibrillation(AF)recurrence after radio... 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