咨询与建议

限定检索结果

文献类型

  • 122,621 篇 期刊文献
  • 908 篇 会议
  • 1 篇 学位论文

馆藏范围

  • 123,530 篇 电子文献
  • 0 种 纸本馆藏

日期分布

学科分类号

  • 50,892 篇 医学
    • 30,235 篇 临床医学
    • 7,293 篇 中西医结合
    • 6,666 篇 公共卫生与预防医...
    • 6,607 篇 药学(可授医学、理...
    • 5,457 篇 基础医学(可授医学...
    • 4,402 篇 中药学(可授医学、...
    • 3,866 篇 医学技术(可授医学...
    • 3,281 篇 中医学
    • 2,563 篇 护理学(可授医学、...
  • 49,948 篇 工学
    • 9,081 篇 材料科学与工程(可...
    • 8,329 篇 化学工程与技术
    • 5,019 篇 机械工程
    • 4,418 篇 计算机科学与技术...
    • 4,390 篇 电气工程
    • 3,627 篇 环境科学与工程(可...
    • 3,470 篇 电子科学与技术(可...
    • 3,166 篇 生物医学工程(可授...
    • 2,967 篇 地质资源与地质工...
    • 2,930 篇 动力工程及工程热...
    • 2,865 篇 食品科学与工程(可...
    • 2,694 篇 仪器科学与技术
  • 26,183 篇 理学
    • 9,411 篇 化学
    • 7,590 篇 生物学
    • 5,449 篇 物理学
    • 2,623 篇 地质学
  • 16,119 篇 农学
    • 5,069 篇 作物学
    • 2,992 篇 农业资源与环境
  • 6,769 篇 管理学
    • 2,600 篇 公共管理
    • 2,571 篇 管理科学与工程(可...
  • 4,686 篇 教育学
    • 3,469 篇 教育学
  • 2,105 篇 经济学
  • 1,600 篇 法学
  • 1,241 篇 文学
  • 576 篇 艺术学
  • 414 篇 历史学
  • 282 篇 哲学
  • 206 篇 军事学

主题

  • 868 篇 影响因素
  • 856 篇 儿童
  • 662 篇 预后
  • 563 篇 大鼠
  • 500 篇 危险因素
  • 482 篇 产量
  • 392 篇 细胞凋亡
  • 388 篇 诊断
  • 349 篇 数值模拟
  • 341 篇 应用
  • 318 篇 凋亡
  • 305 篇 护理
  • 288 篇 糖尿病
  • 276 篇 磁共振成像
  • 264 篇 小鼠
  • 255 篇 力学性能
  • 248 篇 高效液相色谱法
  • 245 篇 治疗
  • 231 篇 高血压
  • 230 篇 meta分析

机构

  • 789 篇 吉林大学
  • 723 篇 北京大学
  • 677 篇 中国科学院大学
  • 675 篇 中国地质大学
  • 643 篇 北京中医药大学
  • 598 篇 兰州大学
  • 588 篇 延安大学
  • 546 篇 上海交通大学
  • 543 篇 甘肃农业大学
  • 532 篇 解放军总医院
  • 525 篇 四川大学
  • 508 篇 西北农林科技大学
  • 497 篇 西安交通大学
  • 432 篇 中国农业大学
  • 417 篇 四川大学华西医院
  • 408 篇 清华大学
  • 403 篇 石河子大学
  • 399 篇 东北林业大学
  • 383 篇 中山大学
  • 381 篇 浙江大学

作者

  • 2,006 篇 马艳
  • 1,413 篇 马燕
  • 1,200 篇 马兰
  • 870 篇 马岩
  • 610 篇 王艳
  • 595 篇 王燕
  • 507 篇 张燕
  • 485 篇 马妍
  • 480 篇 张艳
  • 431 篇 李岩
  • 427 篇 李燕
  • 427 篇 刘艳
  • 395 篇 李艳
  • 381 篇 马超
  • 361 篇 王岩
  • 316 篇 张岩
  • 315 篇 马晓燕
  • 300 篇 刘燕
  • 267 篇 马彦
  • 265 篇 陈燕

语言

  • 115,533 篇 中文
  • 7,993 篇 英文
  • 4 篇 日文
检索条件"作者=Yan-lan Ma"
123530 条 记 录,以下是51-60 订阅
排序:
Silencing transformer and transformer-2 in Zeugodacus cucurbitae causes defective sex determination with inviability of most pseudomales
收藏 引用
Journal of Integrative Agriculture 2024年 第3期23卷 938-947页
作者: Qin ma Zizhen Fan Ping Wang Siya ma Jian Wen Fengqin Cao Xianwu Lin Rihui yan Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests of Ministry of Education School of Plant ProtectionHainan UniversityHaikou 570228China School of Life Sciences HainanUniversityHaikou 570228China Hainan Yazhou Bay Seed Lab Sanya 572000China
transformer is a switch gene for sex determination in many insects, which cooperates with transformer-2 that is expressed in both sexes to regulate female differentiation, particularly in dipterans. Zeugodacus cucurbi... 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
Hydroxysafflor Yellow A Promotes HaCaT Cell Proliferation and Migration by Regulating HBEGF/EGFR and PI3K/AKT Pathways and Circ_0084443
收藏 引用
Chinese Journal of Integrative Medicine 2024年 第3期30卷 213-221页
作者: ZHANG Yue XIAO yan-wei ma Jing-xin WANG Ao-xue Department of Dermatology the Second Hospital of Dalian Medical UniversityDalianLiaoning Province116021China Department of Cell Biology Dalian Medical UniversityDalianLiaoning Province116044China
Objective:To investigate the effect and possible mechanism of hydroxysafflor yellow A(HSYA) on human immortalized keratinocyte cell proliferation and ***:HaCaT cells were treated with *** proliferation was detected by... 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
Impact of continuous care on cardiac function in patients with lung cancer complicated by coronary heart disease
收藏 引用
World Journal of Clinical Cases 2024年 第2期12卷 314-321页
作者: Ting Gao Jin-lan Luo Pan Guo Xi-Wen Hu Xiao-yan Wei yan Hu Division of Cardiovascular First Ward Department of Internal MedicineLiyuan HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430077Hubei ProvinceChina Department of Cardiovascular Medicine Wuhan Wuchang HospitalWuhan 430063Hubei ProvinceChina Cardiovascular Clinical Medical Center Liyuan HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430077Hubei ProvinceChina Department of Second Thoracic Surgery Hubei Cancer HospitalWuhan 430079Hubei ProvinceChina
BACKGROUND Despite sharing similar pathogenic factors,cancer and coronary heart disease(CHD)occur in comparable populations at similar ages and possess similar susceptibility ***,it is increasingly commonplace for pat... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Proteomics analysis of coronary atherosclerotic heart disease with different Traditional Chinese Medicine syndrome types before and after percutaneous coronary intervention
收藏 引用
Journal of Traditional Chinese Medicine 2024年 第3期44卷 554-563页
作者: WANG Zhibo LI Ying WANG Daoping ma Bo MIAO lan REN Junguo LIU Jinghua LIU Jianxun Beijing Key Laboratory of Pharmacology of Chinese materia Region Institute of Basic Medical SciencesXiyuan HospitalChina Academy of Chinese Medical SciencesNational Clinical Research Center of Cardiovascular Disease of Traditional Chinese MedicineBeijing 100000China the National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop ScienceChinese Academy of Agricultural ScienceBeijing 100098China Department of Cardiology Beijing Anzhen HospitalCapital Medical UniversityBeijing 100029China
OBJECTIVE: To investigate the underlying protein molecular mechanisms of "Qi stagnation and blood stasis syndrome"(QS) and "Qi deficiency and blood stasis syndrome"(QD), as two subtypes of coronary artery disease(CAD)... 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
Climate and topography regulate the spatial pattern of soil salinization and its effects on shrub community structure in Northwest China
收藏 引用
Journal of Arid land 2024年 第7期16卷 925-942页
作者: DU lan TIAN Shengchuan ZHAO Nan ZHANG Bin MU Xiaohan TANG Lisong ZHENG Xinjun LI yan State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China University of Chinese Academy of Sciences Beijing 100049China Fukang Station of Desert Ecology Chinese Academy of SciencesFukang 831505China State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China
Soil salinization may affect biodiversity and species composition,leading to changes in the plant community ***,few studies have explored the spatial pattern of soil salinization and its effects on shrub community str... 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
Formation environment and hydrocarbon potential of the Paleogene Enping Formation coal measures in the ZhuⅠDepression of northern South China Sea
收藏 引用
Acta Oceanologica Sinica 2024年 第4期43卷 119-135页
作者: Yuting Yin Lei lan Dongdong Wang Ying Chen yan Liu Youchuan Li Zengxue Li Jiamin Liu College of Earth Science and Engineering Shandong University of Science and TechnologyQingdaoShandong 266590China China National Offshore Oil Corporation Research Institute Co. Ltd.Beijing 100028China School of Geography Earth and Environmental SciencesUniversity of BirminghamBirminghamB152TTUK
The coal-measure source rock in the Chinese sea area plays a significant role as a hydrocarbon source rock,with its genetic environment,development and distribution,and hydrocarbon generation potential serving as esse... 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
Evaluating soil acidification risk and its effects on biodiversity–ecosystem multifunctionality relationships in the drylands of China
收藏 引用
Forest Ecosystems 2024年 第2期11卷 162-171页
作者: lan Du Shengchuan Tian Nan Zhao Bin Zhang Xiaohan Mu Lisong Tang Xinjun Zheng yan Li State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi830011XinjiangChina University of Chinese Academy of Sciences Beijing100049China Fukang Station of Desert Ecology Chinese Academy of SciencesFukang831505XinjiangChina State Key Laboratory of Subtropical Silviculture Zhejiang A and F UniversityHangzhou311300ZhejiangChina
Background:Soil acidifcationn caused by anthropogenic activities may aft soil biochemical cydling,bidiversity,productivity,and multiple eosystem-related functions in ***,to date,such information is lacking to support ... 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
Microfacies and diagenetic alteration in a semi-deep to deep lacustrine shale: The yanchang Formation in the Ordos Basin, China
收藏 引用
Petroleum Science 2024年 第3期21卷 1524-1538页
作者: Bin Bai Jing-Yue Hao Ling Fu Yu-Xi Liu Jian-Peng Wang lan Wang Kevin GTaylor Lin ma PetroChina Research Institute of Petroleum Exploration and Development Beijing100083China Department of Earth and Environmental Sciences University of ManchesterM139PLUK College of Earth Sciences Jilin UniversityChangchun130061jilinChina Department of Chemical Engineering University of ManchesterM139PLUK
The mineralogical development and diagenetic sequence of lacustrine shales in the Chang 7 Member of the yanchang Formation in the Ordos Basin are detailed studied.A model of their depositional system and a diagenetic ... 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
Cholecystokinin and cholecystokinin-A receptor: An attractive treatment strategy for biliary dyskinesia?
收藏 引用
World Journal of Gastroenterology 2024年 第3期30卷 283-285页
作者: Jun Chang yan Liu Ting-Can Jiang lan Zhao Jian-Wei Liu Tianjin Institute of Acupuncture and Moxibustion The First Teaching Hospital of Tianjin University of Traditional Chinese MedicineTianjin 300381China Department of Gastroenterology Tianjin Hospital of Integrated Traditional Chinese and Western Medicine Nankai HospitalTianjin 300100China State Key Laboratory of Component-Based Chinese Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China School of Integrative Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China
Biliary dyskinesia is a relatively common gastrointestinal disease that is increas-ing in incidence as living standards ***,its underlying pathogenesis remains unclear,hindering the development of therapeutic ***,“Ex... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Core-Shell Semiconductor-Graphene Nanoarchitectures for Efficient Photocatalysis:State of the Art and Perspectives
收藏 引用
Nano-Micro Letters 2024年 第12期16卷 553-588页
作者: Jinshen lan Shanzhi Qu Xiaofang Ye Yifan Zheng Mengwei ma Shengshi Guo Shengli Huang Shuping Li Junyong Kang Engineering Research Center of Micro-Nano Optoelectronic materials and Devices Ministry of EducationFujian Key Laboratory of Semiconductor Materials and ApplicationsCI Center for OSEDDepartment of PhysicsXiamen UniversityXiamen 361005People’s Republic of China
Semiconductor photocatalysis holds great promise for renewable energy generation and environment remediation,but generally suffers from the serious drawbacks on light absorption,charge generation and transport,and str... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论