咨询与建议

限定检索结果

文献类型

  • 706,851 篇 期刊文献
  • 6,065 篇 会议
  • 49 篇 学位论文
  • 31 册 图书

馆藏范围

  • 712,991 篇 电子文献
  • 5 种 纸本馆藏

日期分布

学科分类号

  • 328,706 篇 工学
    • 44,749 篇 材料科学与工程(可...
    • 35,346 篇 化学工程与技术
    • 31,843 篇 机械工程
    • 24,862 篇 计算机科学与技术...
    • 21,352 篇 电气工程
    • 19,552 篇 软件工程
    • 17,983 篇 土木工程
    • 17,181 篇 仪器科学与技术
    • 16,421 篇 动力工程及工程热...
    • 15,278 篇 环境科学与工程(可...
    • 14,867 篇 交通运输工程
    • 14,261 篇 控制科学与工程
    • 14,035 篇 电子科学与技术(可...
    • 13,735 篇 水利工程
    • 12,549 篇 食品科学与工程(可...
  • 204,231 篇 医学
    • 116,632 篇 临床医学
    • 27,952 篇 中西医结合
    • 20,487 篇 公共卫生与预防医...
    • 18,255 篇 药学(可授医学、理...
    • 15,290 篇 中药学(可授医学、...
    • 14,355 篇 医学技术(可授医学...
    • 13,623 篇 基础医学(可授医学...
  • 85,509 篇 理学
    • 18,463 篇 化学
    • 15,970 篇 生物学
  • 71,597 篇 农学
    • 18,276 篇 作物学
    • 15,187 篇 农业资源与环境
  • 54,610 篇 管理学
    • 21,895 篇 管理科学与工程(可...
    • 17,902 篇 公共管理
  • 34,837 篇 教育学
    • 26,978 篇 教育学
  • 22,553 篇 经济学
    • 19,677 篇 应用经济学
  • 17,982 篇 法学
  • 10,563 篇 文学
  • 5,134 篇 艺术学
  • 4,958 篇 历史学
  • 2,809 篇 哲学
  • 2,130 篇 军事学

主题

  • 4,538 篇 数值模拟
  • 4,527 篇 影响因素
  • 3,402 篇 预后
  • 3,230 篇 儿童
  • 3,016 篇 应用
  • 2,755 篇 产量
  • 2,621 篇 力学性能
  • 2,403 篇 诊断
  • 2,397 篇 危险因素
  • 2,255 篇 大鼠
  • 2,171 篇 治疗
  • 2,097 篇 对策
  • 1,972 篇 磁共振成像
  • 1,907 篇 教学改革
  • 1,640 篇 中国
  • 1,613 篇 综述
  • 1,604 篇 糖尿病
  • 1,595 篇 稳定性
  • 1,518 篇 细胞凋亡
  • 1,421 篇 合成

机构

  • 4,407 篇 中国科学院大学
  • 4,312 篇 清华大学
  • 4,024 篇 吉林大学
  • 3,971 篇 哈尔滨工业大学
  • 3,844 篇 北京大学
  • 3,679 篇 兰州大学
  • 3,655 篇 天津大学
  • 3,607 篇 西北农林科技大学
  • 3,517 篇 上海交通大学
  • 3,503 篇 西安交通大学
  • 3,460 篇 同济大学
  • 3,436 篇 浙江大学
  • 3,401 篇 中国地质大学
  • 3,289 篇 山东大学
  • 3,173 篇 中国矿业大学
  • 3,004 篇 四川大学
  • 3,001 篇 宁夏大学
  • 2,881 篇 西北工业大学
  • 2,792 篇 中国石油大学
  • 2,680 篇 大连理工大学

作者

  • 4,678 篇 马超
  • 3,646 篇 马丽
  • 3,410 篇 马宁
  • 3,402 篇 马强
  • 3,319 篇 马静
  • 3,137 篇 马涛
  • 2,886 篇 马军
  • 2,845 篇 马骏
  • 2,543 篇 马莉
  • 2,414 篇 马勇
  • 2,374 篇 马力
  • 2,145 篇 马琳
  • 2,138 篇 马杰
  • 1,958 篇 马艳
  • 1,693 篇 马俊
  • 1,643 篇 马玲
  • 1,550 篇 马林
  • 1,505 篇 马健
  • 1,495 篇 马磊
  • 1,453 篇 马辉

语言

  • 675,115 篇 中文
  • 37,870 篇 英文
  • 10 篇 日文
  • 1 篇 法文
检索条件"作者=jun-ying ma"
712996 条 记 录,以下是1-10 订阅
排序:
Preparing Process of Cerium Acetate and Rare Earth Acetate
收藏 引用
Journal of Rare Earths 2004年 第Z1期22卷 26-31页
作者: Qiao jun ma ying Xu Yanhui Zhang jun Chang Shu Hao Xianku Baotou Research Institute of Rare Earth Baotou 014010 China Baotou Research Institute of Rare Earth Baotou 014010 China Baotou Research Institute of Rare Earth Baotou 014010 China Baotou Research Institute of Rare Earth Baotou 014010 China Baotou Research Institute of Rare Earth Baotou 014010 China Baotou Research Institute of Rare Earth Baotou 014010 China
Preparing process was presented and the influences of concentration of acetic acid, reaction temperature, the ratio of cerium carbonate and acetic acid, heat preservation time to the yield of cerium acetate were *** c... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Doublet bands at borders of A ≈ 130 island of chiral candidates: Case study of 120I
收藏 引用
Chinese Physics C 2020年 第7期44卷 95-102页
作者: Rui Guo Yong-Hao Liu Jian Li Wu-Ji Sun Li Li ying-jun ma College of Physics Jilin UniversityChangchun 130012China Department of Physics Western Michigan UniversityKalamazooMI 4900&USA
Positive-parity doublet bands were reported in *** on these,we discuss the corresponding experimental characteristics,including rotational alignment,and re-examine the corresponding configuration *** self-consistent t... 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
Molecular identification of Taenia mustelae cysts in subterranean rodent plateau zokors(Eospalax baileyi)
收藏 引用
Zoological Research 2014年 第4期35卷 313-318页
作者: Fang ZHAO jun-ying ma Hui-Xia CAI Jian-Ping SU Zhi-Bin HOU Tong-Zuo ZHANG Gong-Hua LIN Key Laboratory of Adaptation and Evolution of Plateau Biota Northwest Institute of Plateau Biology Chinese Academy of Sciences Qinghai Institute for Endemic Disease Prevention and Control Xining No.2 People’s Hospital of Qinghai Province
Cestode larvae spend one phase of their two-phase life cycle in the viscera of rodents, but cases of cestodes infecting subterranean rodents have only been rarely observed. To experimentally gain some insight into thi... 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
A development of lifetime measurement based on the differential decay curve method
收藏 引用
Nuclear Science and Techniques 2018年 第8期29卷 114-120页
作者: Jian Zhong Xiao-Guang Wu ying-jun ma Yun Zheng Cong-Bo Li Guang-Sheng Li Bao-Ji Zhu Tian-Xiao Li Yan-jun Jin Yan-Xiang Gao Ke-Yan ma Dong Yang Hao Guo Jia-Qi Wang Xian Guan Ji Sun China Institute of Atomic Energy Beijing 102413China College of Physics Jilin UniversityChangchun 621010China Shenyang Institute of Engineering Shenyang 110136China
A new development of indirect gating case in the differential decay curve method used for lifetime measurement has been *** gate region was extended from partial shifted peak to both shifted and unshifted *** statisti... 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
MLVA and MLST typing of Brucella from Qinghai,China
收藏 引用
Infectious Diseases of Poverty 2016年 第1期5卷 241-248页
作者: jun-ying ma Hu Wang Xue-Fei Zhang Li-Qing Xu Gui-ying Hu Hai Jiang Fang Zhao Hong-Yan Zhao Dong-Ri Piao Yu-Min Qin Bu-Yun Cui Gong-Hua Lin Qinghai Institute for Endemic Disease Prevention and Control Xining 811602QinghaiChina State Key Laboratory for Infectious Disease Prevention and Control Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesNational Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China Key Laboratory of Adaptation and Evolution of Plateau Biota Northwest Institute of Plateau BiologyChinese Academy of SciencesXining 810008QinghaiChina
Background:The Qinghai-Tibet Plateau(QTP)of China is an extensive pastoral and semi-pastoral area,and because of poverty and bad hygiene conditions,Brucella is highly prevalent in this *** order to adequately prevent ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Lifetime measurements in 138Nd
收藏 引用
Nuclear Science and Techniques 2021年 第10期32卷 72-78页
作者: Jian Zhong Xiao-Guang Wu Shi-Peng Hu ying-jun ma Yun Zheng Cong-Bo Li Guang-Sheng Li Bao-Ji Zhu Tian-Xiao Li Yan-jun Jin Yan-Xiang Gao Qi-Wen Fan Ke-Yan ma Dong Yang Hui-Bin Sun Hai-Ge Zhao Lin Gan Qi Luo Zheng-Xin Wu College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China China Institute of Atomic Energy Beijing 102413China College of Physics Jilin UniversityChangchun 621010China
Lifetimes of the 2_(1)^(+),4_(1)^(+),7_(2)^(-),10_(2)^(+),12_(2)^(+),and 14_(1)^(+) states in 138 Nd populated via the 123 Sb(19 F,4n)138 Nd fusion–evaporation reaction were measured with the recoil distance Doppler ... 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
Evidence for coexisting prolate and near-oblate shapes at high spin in 125Cs
收藏 引用
Chinese Physics C 2016年 第12期40卷 57-64页
作者: Ji Sun Tetsuro Komatsubara Jia-Qi Wang Hao Guo Xue-Yuan Hu ying-jun ma Yun-Zuo Liu Kohei Furuno College of Physics Jilin University Changchun 130012 China Research Facility Center for Pure and Applied Science University of Tsukuba Ibaraki 305-8577 Japan
Excited states in the odd-proton nucleus 125Cs were investigated by means of in-beam β-ray spectroscopy. The πg7/2 band is observed to fork into a △I = 1 coupled band and a △I = 2 decoupled band at high spins. To ... 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
A remote management system for control and surveillance of echinococcosis:design and implementation based on internet of things
收藏 引用
Infectious Diseases of Poverty 2021年 第2期10卷 87-88页
作者: Shi-Jie Yang Ning Xiao Jing-Zhong Li Yu Feng jun-ying ma Gong-Sang Quzhen Qing Yu Ting Zhang Shi-Cheng Yi Xiao-Nong Zhou National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionShanghaiChina 不详
Background:As a neglected cross-species parasitic disease transmitted between canines and livestock,echinococcosis remains a global public health concern with a heavy disease *** China,especially in the epidemic pasto... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Effects of Bifidobacterium lactis BLa80 on fecal and mucosal flora and stem cell factor/c-kit signaling pathway in simulated microgravity rats
收藏 引用
World Journal of Gastroenterology 2025年 第1期31卷 93-109页
作者: Ping Zhang ying Zhu Pu Chen Tong Zhou Zhe-Yi Han jun Xiao Jian-Feng ma Wen ma Peng Zang ying Chen Graduate School Hebei North UniversityZhangjiakou 075000Hebei ProvinceChina Key Laboratory of Aerospace Nutrition and Food Engineering China Astronaut Research and Training CenterBeijing 100094China Department of Gastroenterology The Air Force Medical CenterBeijing 100142China Department of Blood Transfusion Air Force Medical CenterBeijing 100142China
BACKGROUND Simulated microgravity environment can lead to gastrointestinal motility *** pathogenesis of gastrointestinal motility disorders is closely related to the stem cell factor(SCF)/c-kit signaling pathway assoc... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Effect of cholesterol metabolism on hepatolithiasis
收藏 引用
World Journal of Gastroenterology 2025年 第1期31卷 157-162页
作者: Lin Zheng Zi-Yu Ye jun-Ji ma Department of Gastroenterology The Second Hospital of Hebei Medical UniversityHebei Key Laboratory of GastroenterologyHebei Institute of GastroenterologyHebei Clinical Research Center for Digestive DiseasesNo.215 Heping West RoadShijiazhuang 050000Hebei ProvinceChina
Surgical intervention is currently the primary treatment for hepatolithiasis;how-ever,some patients still experience residual stones and high recurrence rates after *** metabolism seems to play an important role in he... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论