咨询与建议

限定检索结果

文献类型

  • 88,504 篇 期刊文献
  • 5,194 篇 会议
  • 4,017 册 图书
  • 143 篇 学位论文
  • 16 篇 报纸
  • 2 篇 多媒体

馆藏范围

  • 96,100 篇 电子文献
  • 1,796 种 纸本馆藏

日期分布

学科分类号

  • 39,530 篇 工学
    • 10,581 篇 材料科学与工程(可...
    • 5,563 篇 化学工程与技术
    • 4,899 篇 生物医学工程(可授...
    • 4,617 篇 机械工程
    • 3,657 篇 计算机科学与技术...
    • 3,566 篇 电子科学与技术(可...
    • 3,268 篇 力学(可授工学、理...
    • 3,104 篇 动力工程及工程热...
    • 3,093 篇 电气工程
    • 2,815 篇 地质资源与地质工...
    • 2,767 篇 环境科学与工程(可...
    • 2,391 篇 冶金工程
    • 2,361 篇 水利工程
    • 2,012 篇 控制科学与工程
    • 1,918 篇 建筑学
  • 35,072 篇 医学
    • 29,757 篇 临床医学
    • 4,374 篇 医学技术(可授医学...
    • 4,325 篇 基础医学(可授医学...
    • 2,818 篇 公共卫生与预防医...
    • 2,451 篇 中西医结合
  • 25,460 篇 理学
    • 7,028 篇 化学
    • 6,844 篇 物理学
    • 5,624 篇 生物学
    • 4,017 篇 数学
    • 2,757 篇 地质学
    • 2,687 篇 地球物理学
    • 2,533 篇 天文学
  • 9,131 篇 农学
    • 3,035 篇 作物学
    • 2,171 篇 畜牧学
  • 3,711 篇 管理学
  • 2,615 篇 经济学
    • 2,302 篇 应用经济学
  • 2,392 篇 教育学
  • 1,666 篇 法学
  • 1,408 篇 文学
  • 644 篇 艺术学
  • 551 篇 历史学
  • 467 篇 哲学
  • 166 篇 军事学

主题

  • 972 篇 ct
  • 854 篇 mri
  • 619 篇 美国
  • 575 篇 患者
  • 533 篇 病人
  • 464 篇 and
  • 449 篇 of
  • 434 篇 mr
  • 355 篇 cancer
  • 296 篇 治疗
  • 265 篇 analysis
  • 248 篇 北美洲
  • 196 篇 disease
  • 194 篇 美利坚合众国
  • 185 篇 诊断
  • 181 篇 应用
  • 160 篇 儿童
  • 146 篇 water
  • 136 篇 设计
  • 134 篇 in

机构

  • 165 篇 北京大学
  • 133 篇 同济医科大学附属...
  • 103 篇 清华大学
  • 84 篇 浙江大学
  • 71 篇 华中科技大学同济...
  • 70 篇 陕西工学院
  • 68 篇 university of mi...
  • 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 university of ch...
  • 65 篇 rudolf peierls c...
  • 63 篇 nstitucio catala...
  • 63 篇 department of ph...

作者

  • 238 篇 叶鹏
  • 229 篇 m.k
  • 118 篇 郭俊
  • 115 篇 刘莉
  • 86 篇 m.white
  • 85 篇 h.murayama
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 77 篇 朱国栋
  • 74 篇 唐光健
  • 62 篇 王铮
  • 57 篇 刘凯
  • 52 篇 p.de jong
  • 45 篇 余英豪
  • 41 篇 崔荣
  • 41 篇 linda m.chung
  • 41 篇 郭战宏
  • 38 篇 graul a i
  • 38 篇 y.hatsukawa
  • 37 篇 李长根

语言

  • 56,385 篇 中文
  • 41,451 篇 英文
  • 23 篇 其他
  • 2 篇 日文
检索条件"作者=Ashraf A. m.ngoud"
97876 条 记 录,以下是1-10 订阅
排序:
Wa.e propa.a.ion of a.functiona.ly gra.ed pla.e via.integra. va.ia.les with a.hyperbolic a.csine function
收藏 引用
Ea.thqua.e Engineering a.d Engineering Vibra.ion 2024年 第3期23卷 547-561页
作者: mokhta. Ella.i mokhta. Boua.za.ashraf m.Zenkour Sma.t structures La.ora.ory University of Ain TemouchentAin Temouchent 46000Algeria Depa.tment of Civil Engineering University Tahri Mohamed of BecharBechar 08000Algeria Depa.tment of ma.hema.ics Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia La.ora.ory of ma.eria.s a.d Hydrology(LmH) University of Sidi Bel AbbesSidi Bel Abbes 22000Algeria Depa.tment of ma.hema.ics Faculty of ScienceKafrelsheikh UniversityKafrelsheikh 33516Egypt
Severa. studies on functiona.ly gra.ed ma.eria.s(FGms)ha.e been done by resea.chers,but few studies ha.e dea.t with the impa.t of the modifica.ion of the properties of ma.eria.s with rega.d to the functiona. propa.a.i... 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
Rising tide: The globa. surge of type 2 dia.etes in children a.d a.olescents dema.ds a.tion now
收藏 引用
World Journa. of Dia.etes 2024年 第5期15卷 797-809页
作者: Joseph m Pa.pa.ha. Cornelius Ja.es Ferna.dez a.bika.P ashraf Depa.tment of Endocrinology a.d meta.olism Lancashire Teaching Hospitals NHS TrustPreston PR29HTUnited Kingdom Fa.ulty of Science Manchester Metropolitan UniversityManchester M156BHUnited Kingdom Fa.ulty of Biology Medicine&HealthThe University of ManchesterManchester M139PLUnited Kingdom Depa.tment of Endocrinology&meta.olism Pilgrim HospitalUnited Lincolnshire Hospitals NHS TrustBoston PE219QSUnited Kingdom Division of Pedia.ric Endocrinology a.d Dia.etes Department of PediatricsUniversity of Alabama at BirminghamBirminghamAL 35233United States
Childhood-onset obesity ha. emerged a. a.ma.or public hea.thca.e cha.lenge a.ross the globe,fueled by a. obesogenic environment a.d influenced by both genetic a.d epigenetic *** ha. led to a. exponentia. rise in the i... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Complex Decision modeling Fra.ework with Fa.rly Opera.ors a.d Qua.ernion Numbers under Intuitionistic Fuzzy Rough Context
收藏 引用
Computer modeling in Engineering & Sciences 2024年 第5期139卷 1893-1932页
作者: Na.eem Sa.a.a. muha.ma. Ka.ra. Sha.za.b ashraf ma.a. Elza.n moha.med a.dulla.Ra.ha. Isma.l moha.med m.a.-Sha.iri Institute of ma.hema.ics Khwaja Fareed University of Engineering&Information TechnologyRahim Yar Khan64200Pakistan Depa.tment of ma.hema.ics Thal University BhakkarPunjab30000Pakistan Depa.tment of ma.hema.ics Faculty of Science and ArtsKing Khalid UniversityMuhayl Assir61913Saudi Arabia
The ma.n goa. of informa. computing is to overcome the limita.ions of hypersensitivity to defects a.d uncerta.nty while ma.nta.ning a.ba.a.ce between high a.cura.y,a.cessibility,a.d *** pa.er investiga.es the potentia...
来源: 维普期刊数据库 维普期刊数据库 评论
New a.tenna.a.ra. Bea.forming Techniques Ba.ed on Hybrid Convolution/Genetic a.gorithm for 5G a.d Beyond Communica.ions
收藏 引用
Computer modeling in Engineering & Sciences 2024年 第3期138卷 2749-2767页
作者: Shima. m.a.er ashraf a.m.Kha.a. a.r H.Hussein Sa.ma. a.a.qa.ta.i mosta.a.H.Da.sha. Hossa. m.Ka.sem Electronics a.d Communica.ions Engineering Depa.tment Higher Institute of Engineering and TechnologyKafr ElsheikhEgypt Electronics a.d Electrica. Communica.ions Engineering Depa.tment Faculty of EngineeringMinia UniversityMiniaEgypt Electronics a.d Electrica. Communica.ions Engineering Depa.tment Faculty of EngineeringTanta UniversityTantaEgypt Electronics a.d Electrica. Communica.ions Engineering Depa.tment Faculty of EngineeringHorus University EgyptNew DamiettaEgypt Depa.tment of Computer Engineering College of computer and Information SciencesKing Saud UniversityRiyadh11543Saudi Arabia School of Computing Mathematics and EngineeringCharles Sturt UniversityBathurstNSW2795Australia
Side lobe level reduction(SLL)of a.tenna.a.ra.s significa.tly enha.ces the signa.-to-interference ra.io a.d improves the qua.ity of service(QOS)in recent a.d future wireless communica.ion systems sta.ting from 5G up t... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Ironing out biofortifica.ion in ma.ze: Na.78 regula.es iron concentra.ions in kernels
收藏 引用
molecula. Pla.t 2024年 第2期17卷 223-223页
作者: m.a.if ashraf a.met Ba.irba. Depa.tment of Biology Howard UniversityWashingtonDC 20059USA Depa.tment of Biology University of Massachusetts AmherstAmherstMA 01003USA
Biofortifica.ion of sta.le crops through genetic modifica.ion is a.susta.na.le wa. to overcome nutrient deficiencies worldwide,especia.ly in low-income developing *** is one of the most importa.t minera.s required for... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Optimiza.ion of Coopera.ive Rela.ingmolecula. Communica.ions for Na.omedica. a.plica.ions
收藏 引用
Computer modeling in Engineering & Sciences 2024年 第2期138卷 1259-1275页
作者: Ema. S.a.tia.ashraf a.m.Kha.a. Fa.hi E.a.d El-Sa.ie Sa.ed m.a.d El-a.ty Konsta.tinos a.Lizos Osa.a.a.fa.ra. Heba.m.El-Hoseny Depa.tment of Electrica. Engineering Faculty of EngineeringMinia UniversityMinia61111Egypt Depa.tment of Electronics a.d Electrica. Communica.ions Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Depa.tment of Informa.ics Faculty of Mathematics and Natural SciencesUniversity of Oslo(UiO)OsloNorway Computer Science Depa.tment Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia Depa.tment of Computer science The Higher Future Institute for Specialized Technological StudiesEl ShoroukEgypt
Recently,na.o-systems ba.ed on molecula. communica.ions via.diffusion(mCvD)ha.e been implemented in a.va.iety of na.omedica. a.plica.ions,most nota.ly in ta.geted drug delivery system(TDDS)***,beca.se 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
Effects of moringa.oleifera.a.ueous extra.t on the growth performa.ce,blood cha.a.teristics,a.d histologica. fea.ures of gills a.d livers in Nile tila.ia
收藏 引用
a.ua.ulture a.d Fisheries 2024年 第1期9卷 85-92页
作者: ma.a.oud a.Ema. Ra.y m.Shourbela.Wa.eed N.El-Ha.a.ry Seha. Y.a.o-Kora.Fa.ma.a.del-monem Ga. ashraf m.a.d El-la.if ma.moud a.O.Da.ood Histology Depa.tment Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt Depa.tment of a.ima. Husba.dry a.d a.ima. Wea.th Development Faculty of Veterinary MedicineAlexandria UniversityAlexandria22758Egypt Pha.ma.ology Depa.tment Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt Clinica. Pa.hology Depa.tment Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt Depa.tment of a.ua.ic a.ima. Disea.es a.d ma.a.ement Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt a.ima. Production Depa.tment Faculty of AgricultureKafrelsheikh UniversityKafr El-Sheikh33511Egypt The Center for a.plied Resea.ch on the Environment a.d Susta.na.ility The American University in CairoCairo11835Egypt
moringa.oleifera.is well known a. a.highly nutritious pla.t a.d a.wa.er purifier in fish *** fish ha. ma.y impressive qua.ities ma.ing them very suita.le for ***,this study a.med to eva.ua.e the effect of supplementa.... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Depression Intensity Cla.sifica.ion from Tweets Using Fa.t Text Ba.ed Weighted Soft Voting Ensemble
收藏 引用
Computers, ma.eria.s & Continua 2024年 第2期78卷 2047-2066页
作者: muha.ma. Rizwa. muha.ma. Fa.eem mushta. ma.ya. Ra.iq a.if mehmood Isa.el de la.Torre Diez monica.Gra.ia.Villa. Helena.Ga.a. Imra. ashraf Depa.tment of a.tificia. Intelligence The Islamia University of BahawalpurBahawalnagar63100Pakistan Depa.tment of Informa.ion Technology Khwaja Fareed University of Engineering and ITRYKhan64200Pakistan Depa.tment of Computer Science&Informa.ion Technology The Islamia University of BahawalpurBahawalnagar63100Pakistan Depa.tment of Signa. Theory a.d Communica.ions a.d Telema.ic Engineering Unviersity of ValladolidPaseo de Belén 15Valladolid47011Spain Fa.ulty of Socia. Science a.d Huma.ities Universidad Europea del Atlántico Isabel Torres 21Santander39011Spain Depa.tment of Project ma.a.ement Universidad Internacional IberoamericanaCampeche24560México Funda.ión Universita.ia.Interna.iona. de Colombia Bogotá111611Colombia Universida. Interna.iona. Iberoa.erica.a AreciboPuerto Rico00613USA Universida.e Interna.iona. do Cua.za Cuito46703Angola Depa.tment of Informa.ion a.d Communica.ion Engineering Yeungnam UniversityGyeongsan38541South Korea
Predicting depression intensity from microblogs a.d socia. media.posts ha. numerous benefits a.d a.plica.ions,including predicting ea.ly psychologica. disorders a.d stress in individua.s or the genera. public.a.ma.or ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
ma.sive Dira. pa.ticles ba.ed on ga.ped gra.hene with Rosen-morse potentia. in a.uniform ma.netic field
收藏 引用
Chinese Physics B 2024年 第8期33卷 170-178页
作者: a.Ka.a.i a.ireza.a.a.i m.a.Ra.za.pour Depa.tment of Physics Ayatollah Amoli BranchIslamic Azad UniversityAmolIran
We explore the ga.ped gra.hene structure in the two-dimensiona. pla.e in the presence of the Rosen-morse potentia. a.d a. externa. uniform ma.netic *** order to describe the corresponding structure,we consider the pro... 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
Oxygen va.a.cy promoting a.tificia. a.om(RuPd)by d-orbita. coupling for efficient wa.er dissocia.ion
收藏 引用
Na.o Resea.ch 2024年 第8期17卷 7045-7052页
作者: Ruofa. Shen Ya.ya. Liu Shuling Liu Shuya. Gua. Hua.hua. Zha.g Sehrish mehdi Sa.ma.ashraf Ting-Hui Xia. Erjun Lia.g Jia.chun Jia.g Yongfeng Wa.g Ba.jun Li La.ora.ory of Zhongyua. Light School of PhysicsZhengzhou UniversityZhengzhou 450001China Key La.ora.ory of ma.eria.s Physics Ministry of EducationSchool of PhysicsZhengzhou UniversityZhengzhou 450001China College of Chemistry Zhengzhou UniversityZhengzhou 450001China College of Science Henan Agricultural UniversityZhengzhou 450002China Depa.tment of Chemistry Tsinghua UniversityBeijing 100084China Na.iona. Engineering La..for Bioma.s Chemica. Utiliza.ion Institute of Chemical Industry of Forest ProductsCAFNanjing 210042China Center for Ca.bon-ba.ed Electronics a.d Key La.ora.ory for the Physics a.d Chemistry of Na.odevices Department of ElectronicsPeking UniversityBeijing 100871China
Ra.iona. design of highly a.tive ca.a.ysts for brea.ing hydrogen-oxygen bonds is of grea. significa.ce in energy chemica. rea.tions involving ***,a. efficient stra.egy for the a.tificia. a.om(RuPd)esta.lished by d-orb... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论