咨询与建议

限定检索结果

文献类型

  • 72,127 篇 期刊文献
  • 11,333 篇 会议
  • 3,769 册 图书
  • 82 篇 学位论文
  • 16 篇 报纸

馆藏范围

  • 85,655 篇 电子文献
  • 1,760 种 纸本馆藏

日期分布

学科分类号

  • 38,726 篇 工学
    • 9,201 篇 材料科学与工程(可...
    • 5,698 篇 化学工程与技术
    • 4,910 篇 机械工程
    • 4,258 篇 计算机科学与技术...
    • 3,871 篇 控制科学与工程
    • 3,563 篇 电子科学与技术(可...
    • 3,252 篇 生物医学工程(可授...
    • 2,798 篇 电气工程
    • 2,797 篇 动力工程及工程热...
    • 2,781 篇 力学(可授工学、理...
    • 2,215 篇 地质资源与地质工...
    • 2,126 篇 水利工程
    • 2,111 篇 冶金工程
    • 2,063 篇 环境科学与工程(可...
    • 1,997 篇 仪器科学与技术
    • 1,876 篇 信息与通信工程
  • 24,763 篇 理学
    • 6,223 篇 化学
    • 5,671 篇 物理学
    • 5,075 篇 数学
    • 4,729 篇 生物学
    • 2,110 篇 地质学
    • 1,859 篇 地球物理学
  • 23,302 篇 医学
    • 18,929 篇 临床医学
    • 2,916 篇 基础医学(可授医学...
    • 2,772 篇 医学技术(可授医学...
    • 2,074 篇 公共卫生与预防医...
  • 8,396 篇 农学
    • 2,889 篇 作物学
    • 1,881 篇 畜牧学
  • 4,777 篇 管理学
    • 2,432 篇 管理科学与工程(可...
  • 2,937 篇 经济学
    • 2,594 篇 应用经济学
  • 2,216 篇 教育学
  • 1,616 篇 法学
  • 1,388 篇 文学
  • 693 篇 艺术学
  • 567 篇 历史学
  • 497 篇 哲学
  • 242 篇 军事学

主题

  • 548 篇 美国
  • 520 篇 ct
  • 330 篇 mri
  • 313 篇 患者
  • 306 篇 of
  • 276 篇 中国
  • 271 篇 病人
  • 232 篇 治疗
  • 216 篇 北美洲
  • 197 篇 and
  • 194 篇 mr
  • 181 篇 analysis
  • 164 篇 应用
  • 158 篇 美利坚合众国
  • 152 篇 诊断
  • 152 篇 儿童
  • 137 篇 cancer
  • 119 篇 方程
  • 116 篇 设计
  • 108 篇 产量

机构

  • 429 篇 深圳大学
  • 274 篇 山东大学
  • 247 篇 北京大学
  • 146 篇 南京大学
  • 121 篇 西南民族大学
  • 119 篇 清华大学
  • 110 篇 新疆大学
  • 90 篇 中山大学
  • 82 篇 浙江大学
  • 77 篇 华中科技大学
  • 71 篇 中国科学院大学
  • 69 篇 university of ch...
  • 69 篇 同济医科大学附属...
  • 68 篇 university of mi...
  • 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 ...

作者

  • 670 篇 p.r.china
  • 148 篇 p. r. china
  • 117 篇 叶鹏
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 m.white
  • 81 篇 p.de jong
  • 80 篇 china
  • 63 篇 刘闯
  • 61 篇 阿不都拉.阿巴斯
  • 60 篇 p.r. china
  • 57 篇 shanghai
  • 57 篇 v.i.belousov
  • 52 篇 beijing
  • 50 篇 王铮
  • 49 篇 刘莉
  • 47 篇 朱国栋
  • 45 篇 coco z
  • 44 篇 郭俊

语言

  • 49,444 篇 中文
  • 37,841 篇 英文
  • 19 篇 其他
  • 1 篇 德文
  • 1 篇 法文
检索条件"作者=R.Z.abbas"
87327 条 记 录,以下是11-20 订阅
排序:
DeBErTa-GrU: Sentiment Analysis for Large Language Model
收藏 引用
Computers, Materials & Continua 2024年 第6期79卷 4219-4236页
作者: Adel Assiri Abdu Gumaei Faisal Mehmood Touqeer abbas Sami Ullah Department of Informatics for Business College of BusinessKing Khalid UniversityAbha61421Saudi Arabia Department of Computer Science College of Computer Engineering and SciencesPrince Sattam bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia School of Electrical and Information Engineering Zhengzhou UniversityZhengzhou450001China Department of Computer Science and Technology Beijing University of Chemical TechnologyBeijing100029China Department of Computer Science Government College University FaisalabadFaisalabadPunjab38000Pakistan
Modern technological advancements have made social media an essential component of daily *** media allow individuals to share thoughts,emotions,and *** analysis plays the function of evaluating whether the sentiment o... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
rational design of AgGaS/znS/znS quantum dots with a near-unity photoluminescence quantum yield via double shelling scheme
收藏 引用
Journal of Materials Science & Technology 2024年 第2期169卷 235-242页
作者: H.X.Lu H.Liu z.z.Fu Y.Y.Chen H.Q.Dai z.Hu W.L.zhang r.Q.Guo Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute of Future Lighting Academy for Engineering and TechnologyFudan UniversityShanghai 200433China Yiwu research Institute of Fudan University YiwuZhejiang 322000China zhongshan-Fudan Joint Innovation Center Zhongshan 528437China
In this study,a two-step method was used to synthesize highly luminescent AgGaS/znS/znS quantum dots(QDs).In the first step,an inner znS shell was formed via a one-pot method,which resulted in a smaller lattice mismat... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Feasibility and reliability of agricultural crop height measurement using the laser sensor array
收藏 引用
Information Processing in Agriculture 2024年 第2期11卷 228-236页
作者: Pejman Alighaleh Tarahom Mesri Gundoshmian Saeed Alighaleh abbas rohani Department of Biosystems Engineering Faculty of AgricultureFerdowsi University of MashhadMashhadIran Department of Biosystems Engineering University of Mohaghegh ArdabiliArdabilIran Auckland Bioengineering Institute University of AucklandNew Zealand
Crop height measurement is widely used to analyze and estimate the overall crop condition and the amount of biomass *** only is manual measurement on a large scale time-consuming but also it is not ***,advanced equipm... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Designing single atom catalysts for exceptional electrochemical CO_(2) reduction
收藏 引用
Chinese Journal of Structural Chemistry 2024年 第1期43卷 3-5页
作者: Muhammad Humayun Mohamed Bououdina abbas Khan Sajjad Ali Chundong Wang Energy Water and Environment LabCollege of Humanities and SciencesPrince Sultan UniversityRiyadh11586Saudi Arabia School of Integrated Circuits Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan430074PR China Department of Chemistry Abdul Wali Khan University MardanMardan23200Pakistan
The release of anthropogenic CO_(2)emissions into the atmosphere has significantly accelerated global warming within the past few *** to the latest data,it is predicted that the concentration of CO_(2)will rise to 800... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Corporate Social responsibility and Brand Community Engagement:Dual Mediating roleof Brand and Community Identifications in the Chinese Decor Industry
收藏 引用
Fudan Journal of the Humanities and Social Sciences 2024年 第1期17卷 51-72页
作者: Moazzam abbas zubair Nawaz Andeela Sahar Fatima School of Management Huazhong University of Science and TechnologyWuhanChina Leadership and Management Studies National Defence UniversityIslamabadPakistan School of Applied Psychology Social Work and PolicyUniversiti Utara MalaysiaKedahMalaysia
Despite a plethora of studies on how corporate social responsibility(CSr)generates favorable consumer outcomes,the existing literature provides limited insights about how CSr may affect inter-consumer connection and b... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Graphene photodetectors integrated with silicon and perovskite quantum dots
收藏 引用
Microsystems & Nanoengineering 2024年 第3期10卷 21-33页
作者: Kashif abbas Peirui Ji Naveed Ullah Shareen Shafique ze zhang Muhammad Faizan Ameer Shenghan Qin Shuming Yang State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong UniversityXi’an 710049China Department of Microelectronic Science and Engineering Laboratory of Clean Energy Storage and ConversionSchool of Physical Science and TechnologyNingbo Collaborative Innovation Center of Nonlinear Calamity System of Ocean and AtmosphereNingbo UniversityNingbo 315211China
Photodetectors(PDs)play a crucial role in imaging,sensing,communication systems,***(Gr),a leading two-dimensional material,has demonstrated significant potential for photodetection in recent ***,its relatively weak in... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
考虑气动载荷的超级高铁系统混合悬挂吊舱稳定性分析
收藏 引用
Acta Mechanica Sinica 2024年 第4期40卷 199-211页
作者: Hamed Petoft abbas rahi Vahid Fakhari Faculty of Mechanical and Energy Engineering Shahid Beheshti UniversityTehran***Iran
超级高铁运输技术(HTT)是一种新型运输方式.它的工作原理是将一种称为吊舱的超高速车辆移动到低气压管中.本文研究了考虑空气动力载荷的新型混合悬浮吊舱的稳定性分析.拟议的吊舱包含两个悬浮装置:磁悬浮(EMS)和气垫.在这方面,气垫有助... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Machine-Learning-Assisted Design of Deep Eutectic Solvents Based on Uncovered Hydrogen Bond Patterns
收藏 引用
Engineering 2024年 第8期39卷 74-83页
作者: Usman L.abbas Yuxuan zhang Joseph Tapia Selim Md Jin Chen Jian Shi Qing Shao Department of Chemical and Materials Engineering University of KentuckyLexingtonKY 40506USA Department of Biosystems and Agricultural Engineering University of KentuckyLexingtonKY 40506USA Institute for Biomedical Informatics Department of Computer ScienceUniversity of KentuckyLexingtonKY 40506USA
Non-ionic deep eutectic solvents(DESs)are non-ionic designer solvents with various applications in catalysis,extraction,carbon capture,and ***,discovering new DES candidates is challenging due to a lack of efficient t... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Is there a need for universal double reflex testing of HBsAg-positive individuals for hepatitis D infection?
收藏 引用
World Journal of Hepatology 2024年 第3期16卷 300-303页
作者: zaigham abbas Minaam abbas Department of Hepatogastroenterology and Liver Transplantation Dr.Ziauddin University HospitalKarachi 75600SindhPakistan Department of Medicine University of CambridgeCambridge CB20SPUnited Kingdom
Hepatitis D virus(HDV)can infect HBsAg-positive individuals,causing rapid fibrosis progression,early decompensation,increased hepatocellular carcinoma risk,and higher mortality than hepatitis B virus(HBV)*** countries... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Classification and Comprehension of Software requirements Using Ensemble Learning
收藏 引用
Computers, Materials & Continua 2024年 第8期80卷 2839-2855页
作者: Jalil abbas Arshad Ahmad Syed Muqsit Shaheed rubia Fatima Sajid Shah Mohammad Elaffendi Gauhar Ali School of Computer Science and Technology Anhui UniversityHefei230039China School of Computing Sciences Pak Austria FachhochschuleInstitute of Applied Sciences and TechnologyHaripur22620Pakistan Department of Computer Science and IT University of LahoreLahore55150Pakistan Department of Computer Science Emerson UniversityPunjabMultan60000Pakistan EIAS(Emerging Intelligent Autonomous Systems)Data Science Lab Prince Sultan UniversityRiyad12435Saudi Arabia
The software development process mostly depends on accurately identifying both essential and optional ***,user needs are typically expressed in free-form language,requiring significant time and human resources to tran... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论