咨询与建议

限定检索结果

文献类型

  • 87,424 篇 期刊文献
  • 5,172 篇 会议
  • 3,917 册 图书
  • 142 篇 学位论文
  • 16 篇 报纸
  • 2 篇 多媒体

馆藏范围

  • 94,962 篇 电子文献
  • 1,793 种 纸本馆藏

日期分布

学科分类号

  • 39,237 篇 工学
    • 10,537 篇 材料科学与工程(可...
    • 5,498 篇 化学工程与技术
    • 4,895 篇 生物医学工程(可授...
    • 4,599 篇 机械工程
    • 3,642 篇 计算机科学与技术...
    • 3,524 篇 电子科学与技术(可...
    • 3,252 篇 力学(可授工学、理...
    • 3,083 篇 动力工程及工程热...
    • 3,075 篇 电气工程
    • 2,786 篇 地质资源与地质工...
    • 2,744 篇 环境科学与工程(可...
    • 2,391 篇 冶金工程
    • 2,323 篇 水利工程
    • 2,008 篇 控制科学与工程
    • 1,915 篇 建筑学
  • 34,568 篇 医学
    • 29,278 篇 临床医学
    • 4,358 篇 医学技术(可授医学...
    • 4,314 篇 基础医学(可授医学...
    • 2,817 篇 公共卫生与预防医...
    • 2,442 篇 中西医结合
  • 25,151 篇 理学
    • 6,954 篇 化学
    • 6,783 篇 物理学
    • 5,547 篇 生物学
    • 3,983 篇 数学
    • 2,733 篇 地质学
    • 2,657 篇 地球物理学
    • 2,497 篇 天文学
  • 9,024 篇 农学
    • 2,995 篇 作物学
    • 2,149 篇 畜牧学
  • 3,875 篇 管理学
  • 2,509 篇 经济学
    • 2,190 篇 应用经济学
  • 2,381 篇 教育学
  • 1,664 篇 法学
  • 1,394 篇 文学
  • 646 篇 艺术学
  • 561 篇 历史学
  • 472 篇 哲学
  • 167 篇 军事学

主题

  • 971 篇 ct
  • 849 篇 mri
  • 608 篇 美国
  • 563 篇 患者
  • 533 篇 病人
  • 438 篇 and
  • 433 篇 mr
  • 427 篇 of
  • 350 篇 cancer
  • 293 篇 治疗
  • 262 篇 analysis
  • 248 篇 北美洲
  • 199 篇 disease
  • 194 篇 美利坚合众国
  • 185 篇 诊断
  • 172 篇 应用
  • 159 篇 儿童
  • 145 篇 water
  • 132 篇 energy
  • 131 篇 中国

机构

  • 165 篇 北京大学
  • 133 篇 同济医科大学附属...
  • 104 篇 清华大学
  • 84 篇 浙江大学
  • 71 篇 华中科技大学同济...
  • 68 篇 university of mi...
  • 68 篇 university of ch...
  • 67 篇 美国加州大学
  • 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...
  • 66 篇 national researc...
  • 66 篇 dept.of physics ...
  • 66 篇 compas group ins...
  • 66 篇 rudolf peierls c...
  • 66 篇 陕西工学院
  • 65 篇 南京大学
  • 63 篇 华中科技大学

作者

  • 238 篇 叶鹏
  • 229 篇 m.k
  • 113 篇 刘莉
  • 110 篇 郭俊
  • 86 篇 m.white
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 76 篇 朱国栋
  • 74 篇 唐光健
  • 60 篇 王铮
  • 55 篇 刘凯
  • 54 篇 p.de jong
  • 45 篇 余英豪
  • 41 篇 linda m.chung
  • 39 篇 崔荣
  • 39 篇 郭战宏
  • 38 篇 graul a i
  • 38 篇 y.hatsukawa
  • 36 篇 m.sugawara

语言

  • 55,789 篇 中文
  • 40,846 篇 英文
  • 21 篇 其他
  • 2 篇 日文
检索条件"作者=Sam.el m.Ngui"
96673 条 记 录,以下是1-10 订阅
排序:
Prevalence and intensity of urinary schistosomiasis and soil-transmitted helminths among women of reproductive age in mwaluphamba,Kwale
收藏 引用
Asian Pacific Journal of Tropical medicine 2024年 第2期17卷 71-83页
作者: sam.el m.ngui Joseph m.mwangangi Joachim Richter Josephine W.Ngunjiri Department of Biological Sciences University of EmbuKenya medical Entomology Kenya Medical Research Institute(KEMRI)Center for Geographic Medicine Research Coast KilifiKenya Institute of International Health Global Health CenterCharitéUniversity MedicineBerlinCorporate Member of Free University and Humboldt University and Berlin Institute of HealthBerlinGermany Swiss Tropical and Public Health Institute BaselSwitzerland Tropical and Infectious Diseases Department of Biological sciencesUniversity of EmbuKenya
Objective:To assess the epidemiology of urinary schistosomiasis and soil-transmitted helminthiasis among women of reproductive age in mwaluphamba,Kwale County,***:A community-based cross-sectional study design was emp... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Classical taxonomy,molecular phylogeny and genetic analysis of the genus Exitianus Ball,1929(Hemiptera:Cicadellidae:Deltocephalinae)from Egypt
收藏 引用
Zoological Systematics 2024年 第2期49卷 143-157页
作者: Rabab m.el-Hady Ahmed F.el-Sayed Survey&Taxonomy Department Plant Protection Research InstituteAgriculture Research CentreGizaEgypt microbial Genetics Department Biotechnology Research InstituteNational Research CentreGizaEgypt Egypt Center for Research and Regenerative medicine(ECRRm) CairoEgypt
Egyptian species of the leafhopper genus Exitianus Ball,1929,***(St?l,1855),***(Distant,1908),and *** Ross,1968 are ***,morphological descriptions,and a key for their identification are *** this study,we used molecula... 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
Urban electric Vehicle Charging Station Placement Optimization with Graylag Goose Optimization Voting Classifier
收藏 引用
Computers, materials & Continua 2024年 第7期80卷 1163-1177页
作者: Amel Ali Alhussan Doaa sami Khafaga el-Sayed m.el-kenawy marwa m.Eid Abdelhameed Ibrahim Department of Computer Sciences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of Communications and electronics Delta Higher Institute for Engineering and TechnologyMansoura35511Egypt Faculty of Artificial Intelligence Delta University for Science and TechnologyMansoura35712Egypt Computer Engineering and Control Systems Department Faculty of EngineeringMansoura UniversityMansoura35516Egypt
To reduce the negative effects that conventional modes of transportation have on the environment,researchers are working to increase the use of electric *** demand for environmentally friendly transportation may be ha... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Dysprosium oxide,alumina,and graphene oxide reinforced polycaprolactone thin films:Thermal stability,morphology,and cell viability
收藏 引用
Journal of Rare Earths 2024年 第7期42卷 1337-1343,I0005页
作者: mohamed Tharwat elabbasy mohamed R.Atteya mai A.samak mousa Abdelrahman Tahani Almahmoud m.A.el-morsy A.A.menazea m.F.H.Abd el-Kader Department of Public Health College of Public Health and Health InformaticsUniversity of Ha'ilHa'il2440Saudi Arabia Food Control Department Faculty of Veterinary MedicineZagazig UniversityZagazig44519Egypt Department of Physical Therapy College of Applied Medical SciencesUniversity of Ha'ilHa'ilSaudi Arabia Department of Histology and Cell Biology Faculty of MedicineZagazig UniversityZagazig44519Egypt College of Nursing University of Ha'ilHa'ilSaudi Arabia College of Science and Humanities in Al-Kharj Physics DepartmentPlasma Technology and Material Science UnitPrince Sattam Bin Abdulaziz UniversityAl-kharj11942Saudi Arabia Physics Department Faculty of ScienceUniversity of DamiettaNew Damietta34517Egypt Spectroscopy Department Physics Research InstituteNational Research CentreDokki12622GizaEgypt Biophysics Department Faculty of ScienceCairo UniversityGizaEgypt
Developing a biomaterial for wound healing applications is still a ***,dysprosium oxide(Dy_(2)O_(3)),aluminum oxide(Al_(2)O_(3)),and graphene oxide(GO)were embedded in cast films based on polycaprolactone(PCL)to be ex... 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
multiple scales method for analyzing a forced damped rotational pendulum oscillatorwithgallows
收藏 引用
Communications in Theoretical Physics 2024年 第5期76卷 58-67页
作者: Haifa A Alyousef Alvaro H Salas B m Alotaibi S A el-Tantawy Department of Physics College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of mathematics and Statistics Universidad Nacional de ColombiaFIZMAKO Research GroupColombia Department of Physics Faculty of SciencePort Said UniversityPort Said 42521Egypt Research Center for Physics(RCP) Department of PhysicsFaculty of Science and ArtsAl-MikhwahAl-Baha UniversityAl-Baha 1988Saudi Arabia
This study reports the analytical solution for a generalized rotational pendulum system with gallows and periodic excited *** multiple scales method(mSm)is applied to solve the proposed *** types of rotational pendulu... 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
Assembly of functional carboxymethyl cellulose/polyethylene oxide/anatase TiO_(2) nanocomposites and tuning the dielectric relaxation, optical, and photoluminescence performances
收藏 引用
Journal of Semiconductors 2024年 第7期45卷 26-38页
作者: Asmaa m.Ismail Abeer A.Reffaee Fawzy G.el Desouky Spectroscopy Department Physics Research InstituteNational Research CentreGizaCairo 12622Egypt microwave Physics and Dielectrics Department National Research CentreDokkiCairoEgypt Solid State Physics Department Physics Research InstituteNational Research CentreGizaCairo 12622Egypt
Nanocomposite films consisting of carboxymethyl cellulose,polyethylene oxide(CmC/PEO),and anatase titanium diox-ide(TO)were produced by the use of sol-gel and solution casting ***2 nanocrystals were effectively incorp... 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
Large magnetocaloric effect and magnetic properties of EuRhO3
收藏 引用
Journal of Rare Earths 2024年 第9期42卷 1724-1729页
作者: m.Lassri m.Sajieddine A.elouafi A.el Hachmi S.el Ouahbi R.moubah Laboratory of Energy and materials Engineering (LGEm) University of Sultan Moulay SlimaneFaculty of Science and Technology (FST) Institute of Applied Physics (IAP)-School of Industrial management (EmINES) Mohammed Ⅵ Polytechnic University National School of Applied Sciences (ENSA) University of Sultan Moulay Slimane Laboratory of mechanics Production and Industrial Engineering (LMPGI)Higher School of Technology of Casablanca (ESTC)University of Hassan Ⅱ Casablanca Laboratory of Radiation on matter and Instrumentation (LRmI) Faculty of Science and Technology (FST) SettatHassan Ⅰ University Laboatory of Physics of Advanced materials and Thermic (LPmAT) Faculty of Science Ain Chock (FSAC)University of Hassan Ⅱ Casablanca
We report on the structural,magnetic,and magnetocaloric properties of *** oxidation states of Eu and Rh ions were studied using X-ray photoelectron spectroscopy(XPS).It is found that the Eu ions are mainly in the di... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
Genetic Variability and Phenotypic Correlations Study among Grain Quality Traits and mineral elements Concentrations in Colored and Non-Colored Rice (Oryza sativa L.)
收藏 引用
Phyton-International Journal of Experimental Botany 2024年 第7期93卷 1733-1748页
作者: Adel A.Rezk mohamed m.el-malky Heba I.mohamed Hossam S.el-Beltagi Agricultural Biotechnology Department College of Agricultural and Food ScienceKing Faisal UniversityAl-Ahsa31982Saudi Arabia Plant Pathology Research Institute Agriculture Research CenterGiza12619Egypt Rice Research and Training Center Field Crop Research InstituteAgriculture Research Center33717Egypt Biological and Geological Sciences Department Faculty of EducationAin Shams UniversityCairo11511Egypt Biochemistry Department Faculty of AgricultureCairo UniversityGiza12613Egypt
Twenty-four rice genotypes were examined to assess genetic variability,heritability,and correlations for seven-grain quality traits,eight nutritional elements,and *** revealed significant differences for the quality tr... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Cardiac arrest, stony heart, and cardiopulmonary resuscitation: An updated revisit
收藏 引用
World Journal of Cardiology 2024年 第3期16卷 126-136页
作者: Ayman el-menyar Bianca m Wahlen Department of Trauma and Vascular Surgery Clinical ResearchHamad Medical CorporationDoha 3050Qatar Department of Clinical medicine Weill Cornell Medical CollegeDoha 24144Qatar Department of Anesthesiology Hamad Medical CorporationDoha 3050Qatar
The post-resuscitation period is recognized as the main predictor of cardiopul-monary resuscitation(CPR)*** first description of post-resuscitation syndrome and stony heart was published over 50 years *** manifestatio... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Optimization of Cooperative Relayingmolecular Communications for Nanomedical Applications
收藏 引用
Computer modeling in Engineering & Sciences 2024年 第2期138卷 1259-1275页
作者: Eman S.Attia Ashraf A.m.Khalaf Fathi E.Abd el-samie Saied m.Abd el-atty Konstantinos A.Lizos Osama Alfarraj Heba m.el-Hoseny Department of electrical Engineering Faculty of EngineeringMinia UniversityMinia61111Egypt Department of electronics and electrical Communications Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Department of Informatics Faculty of Mathematics and Natural SciencesUniversity of Oslo(UiO)OsloNorway Computer Science Department Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia Department of Computer science The Higher Future Institute for Specialized Technological StudiesEl ShoroukEgypt
Recently,nano-systems based on molecular communications via diffusion(mCvD)have been implemented in a variety of nanomedical applications,most notably in targeted drug delivery system(TDDS)***,because the mCvD is unre... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论