咨询与建议

限定检索结果

文献类型

  • 29,954 篇 期刊文献
  • 624 册 图书
  • 558 篇 会议
  • 9 篇 学位论文

馆藏范围

  • 30,790 篇 电子文献
  • 374 种 纸本馆藏

日期分布

学科分类号

  • 14,781 篇 医学
    • 8,691 篇 临床医学
    • 2,422 篇 中西医结合
    • 1,859 篇 药学(可授医学、理...
    • 1,495 篇 中药学(可授医学、...
    • 1,359 篇 基础医学(可授医学...
    • 972 篇 公共卫生与预防医...
    • 879 篇 医学技术(可授医学...
    • 467 篇 护理学(可授医学、...
    • 386 篇 中医学
  • 10,658 篇 工学
    • 3,281 篇 化学工程与技术
    • 1,991 篇 材料科学与工程(可...
    • 874 篇 食品科学与工程(可...
    • 691 篇 环境科学与工程(可...
    • 647 篇 生物医学工程(可授...
    • 579 篇 生物工程
    • 412 篇 机械工程
    • 400 篇 轻工技术与工程
    • 381 篇 电子科学与技术(可...
    • 293 篇 电气工程
  • 5,694 篇 理学
    • 2,133 篇 化学
    • 1,318 篇 生物学
    • 732 篇 物理学
    • 491 篇 生态学
    • 367 篇 数学
  • 3,642 篇 农学
    • 952 篇 作物学
    • 650 篇 农业资源与环境
    • 584 篇 兽医学
    • 443 篇 畜牧学
    • 409 篇 植物保护
    • 312 篇 园艺学
  • 558 篇 管理学
  • 413 篇 文学
  • 287 篇 教育学
  • 229 篇 经济学
  • 169 篇 法学
  • 95 篇 历史学
  • 71 篇 艺术学
  • 44 篇 哲学
  • 18 篇 军事学

主题

  • 276 篇 凋亡
  • 244 篇 大鼠
  • 202 篇 细胞凋亡
  • 157 篇 合成
  • 146 篇 细胞增殖
  • 114 篇 危险因素
  • 95 篇 吸附
  • 92 篇 糖尿病
  • 89 篇 2型糖尿病
  • 76 篇 血糖
  • 74 篇 氧化应激
  • 72 篇 炎症因子
  • 69 篇 老年人
  • 69 篇 儿童
  • 66 篇 并发症
  • 66 篇 增殖
  • 62 篇 预后
  • 61 篇 小麦
  • 57 篇 小鼠
  • 54 篇 晶体结构

机构

  • 137 篇 吉林大学
  • 135 篇 北京大学
  • 121 篇 北京中医药大学
  • 105 篇 河北农业大学
  • 103 篇 山东大学
  • 97 篇 辽宁石油化工大学
  • 95 篇 天津医科大学
  • 77 篇 暨南大学
  • 75 篇 首都医科大学
  • 74 篇 解放军总医院
  • 68 篇 university of mi...
  • 68 篇 陕西科技大学
  • 67 篇 institute for pa...
  • 67 篇 nikhef p.o.box 4...
  • 67 篇 fysikum stockhol...
  • 67 篇 michigan state u...
  • 67 篇 institut fur the...
  • 67 篇 dept.of physics ...
  • 67 篇 compas group ins...
  • 67 篇 rudolf peierls c...

作者

  • 2,034 篇 李娜
  • 849 篇 张娜
  • 825 篇 王娜
  • 761 篇 刘娜
  • 304 篇 赵娜
  • 159 篇 杨娜
  • 154 篇 王丽娜
  • 105 篇 胡娜
  • 91 篇 孙娜
  • 87 篇 张丽娜
  • 86 篇 唐娜
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 m.white
  • 84 篇 p.de jong
  • 84 篇 v.i.belousov
  • 80 篇 陈娜
  • 78 篇 徐娜
  • 76 篇 v.burkert

语言

  • 26,237 篇 中文
  • 4,906 篇 英文
检索条件"作者=Na.a. a.i.h bi.ti.Mohd Ha.a."
31145 条 记 录,以下是11-20 订阅
排序:
Efficient and selective upcycling of waste polylactic acid into acetate using nickel selenide
收藏 引用
Journal of Energy Chemistry 2024年 第10期97卷 575-584,I0012页
作者: bing Lan Yinfang Chen nantian Xiao na Liu Chao Juan Chuan Xia Fan Zhang national Engineering Laboratory of Eco-Friendly Polymeric Materials College of ChemistrySichuan UniversityChengdu 610064SichuanChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina
The conversion of waste polylactic acid(PLA)plastics into high-value-added chemicals through electrochemical methods is a promising and sustainable ***,developing efficient and highly selective catalysts for lactic ac... 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
Response of Bacterial Community and Enzyme Activity of Greenhouse Tomato under Different irrigation Systems
收藏 引用
Phyton-international Journal of Experimental Botany 2024年 第7期93卷 1543-1568页
作者: haijian Yang Mingzhi Zhang na Xiao Yuan Li Faculty of Engineering Huanghe Science and Technology UniversityZhengzhou450063China Northwest Land and Resources Research Center Shaanxi Normal UniversityXi’an710119China
The micro-sprinkler irrigation mulched(MSM)has been suggested as a novel water-saving approach in con-trolled environment ***,the effects of microbial community structure and enzyme activity in the rhizosphere soil on... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
A hybrid Classification and identification of Pneumonia Using African Buffalo Optimization and CNN from Chest X-Ray images
收藏 引用
Computer Modeling in Engineering & Sciences 2024年 第3期138卷 2497-2517页
作者: nasser Alalwan Ahmed i.Taloba Amr Abozeid Ahmed ibrahim Alzahrani a.i.h.Al-Bayatti Computer Science Department Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia information System Department Faculty of Computers and InformationAssiut UniversityAssiutEgypt Mathematics Department Faculty of ScienceAl-Azhar UniversityCairoEgypt Cyber Technology institute(Cti) De Montfort UniversityLeicesterUK
An illness known as pneumonia causes inflammation in the *** there is so much information available fromvarious X-ray images,diagnosing pneumonia has typically proven *** improve image quality and speed up the diagnos... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Exact solutions for magnetohydrodynamic nanofluids flow and heat transfer over a permeable axisymmetric radially stretching/shrinking sheet
收藏 引用
Chinese Physics B 2024年 第2期33卷 108-114页
作者: U.S.Maha.a.eshwar G.P.Va.i.ha L.M.Pérez Emad h.Aly i.Pop Department of Studies in Mathematics Davangere UniversityShivagangothriDavangereIndia Departamento de F´ısica FACIUniversidad de Tarapac´aCasilla 7DAricaChile Department of Mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Department of Mathematics Babes-Bolyai University400084 Cluj-NapocaRomania
We report on the magnetohydrodynamic impact on the axisymmetric flow of Al_(2)O_(3)/Cu nanoparticles suspended in h_(2)O past a stretched/shrinked *** the use of partial differential equations and the corresponding th... 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
Enhancing efficiency and stability of organic solar cells through a simplified four-step synthesis of fully non-fused ring electron acceptor
收藏 引用
Journal of Energy Chemistry 2024年 第6期93卷 601-608,I0015页
作者: Chenyang han huanhuan Gao Yanna Sun Yuanyuan Kan Zhaozhao bi Wei Ma Yani Zhang Juan Antonio Zapien Yingguo Yang Ke Gao College of New Energy Xi’an Shiyou UniversityXi’an 710065ShaanxiChina Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Institute of Frontier ChemistrySchool of Chemistry and Chemical EngineeringShandong UniversityQingdao 266237ShandongChina State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 99907China School of Microelectronics Fudan UniversityShanghai 200433China
Design and synthesis of superior cost-effective non-fullerene acceptors(NFAs)are still big challenges for facilitating the commercialization of organic solar cells(OSCs),yet to be ***,two medium bandgap fully non-fuse... 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 guest Ch_(3)CN molecule triggers solid-state photochromism in a Cu_(2)i_(2)-based MOF for advanced time-dependent encryption and inkless erasable printing
收藏 引用
Chinese Chemical Letters 2024年 第3期35卷 532-537页
作者: Meng-Juan Wang Bo Li Yong-Li Wei Shu-na Zhao Shuang-Quan Zang henan Key Laboratory of Crystalline Molecular Functional Materials Henan International Joint Laboratory of Tumor Theranostical Cluster MaterialsGreen Catalysis Centerand College of ChemistryZhengzhou UniversityZhengzhou 450001China College of Chemistry and Pharmaceutical Engineering Nanyang Normal UniversityNanyang 473061China
it remains a big challenge to develop solid-state stimuli-responsive materials for time-dependent information encryption and inkless erasable printing with long retention ***,a 2D Cu_(2)i_(2)-based MOF with photorespo... 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
Effect of Maternal DEhP Exposure on Lipid Metabolism in Adult Male Rats and the Antagonistic Effect of Genistein
收藏 引用
biomedical and Environmental Sciences 2024年 第3期37卷 315-319页
作者: ZhaNG Yun Bo Li Jiang Li tiAN Jie na Xiao Lin Department of Environmental hygiene Public Health CollegeHarbin Medical UniversityHarbin 150081HeilongjiangChina
Lipid metabolism refers to the biochemical processes involved in synthesising,storing,utilising,and breaking down lipids in living *** are essential for various physiological functions,including energy storage,insulat... 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
Asynchronous gain-scheduled control of deepwater drilling riser system with hybrid event-triggered sampling and unreliable communication
收藏 引用
Frontiers of information Technology & Electronic Engineering 2024年 第2期25卷 272-285页
作者: na PANG Dawei ZhaNG Shuqian ZhU School of Mathematics Shandong UniversityJinan250100China
This paper investigates the recoil control of the deepwater drilling riser system with nonlinear tension force and energy-bounded friction force under the circumstances of limited network resources and unreliable *** ... 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
Brain protective effect of dexmedetomidine vs propofol for sedation during prolonged mechanical ventilation in non-brain injured patients
收藏 引用
World Journal of Psychiatry 2024年 第3期14卷 370-379页
作者: hong-Xun Yuan Li-na Zhang Gang Li Li Qiao intensive Care Unit Peking University International HospitalBeijing 102206China Central Operating Room The Affiliated Beijing Chaoyang Hospital of Capital Medical UniversityBeijing 100020China
BACKGROUND Dexmedetomidine and propofol are two sedatives used for long-term *** remains unclear whether dexmedetomidine provides superior cerebral protection for patients undergoing long-term mechanical *** To compar... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Optimal Operation Strategy of Electricity-hydrogen Regional Energy System under Carbon-Electricity Market Trading
收藏 引用
Energy Engineering 2024年 第3期121卷 619-641页
作者: Jingyu Li Mushui Wang Zhaoyuan Wu Guizhen tian na Zhang Guangchen Liu inner Mongolia Key Laboratory of Electrical Energy Conversion Transmission and Control Inner Mongolia University of TechnologyHohhot010080China School of Electric Power Inner Mongolia University of TechnologyHohhot010080China School of Electrical and Electronic Engineering North China Electric Power UniversityBeijing102206China
Given the“double carbon”objective and the drive toward low-carbon power,investigating the integration and interaction within the carbon-electricity market can enhance renewable energy utilization and facilitate ener... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论