咨询与建议

限定检索结果

文献类型

  • 19,062 篇 期刊文献
  • 628 篇 会议
  • 424 册 图书
  • 10 篇 学位论文
  • 1 篇 报纸

馆藏范围

  • 19,974 篇 电子文献
  • 163 种 纸本馆藏

日期分布

学科分类号

  • 8,298 篇 工学
    • 2,206 篇 材料科学与工程(可...
    • 1,088 篇 化学工程与技术
    • 923 篇 生物医学工程(可授...
    • 678 篇 电子科学与技术(可...
    • 588 篇 机械工程
    • 508 篇 计算机科学与技术...
    • 435 篇 动力工程及工程热...
    • 401 篇 力学(可授工学、理...
    • 344 篇 仪器科学与技术
    • 317 篇 光学工程
    • 286 篇 软件工程
    • 272 篇 控制科学与工程
    • 270 篇 地质资源与地质工...
    • 265 篇 核科学与技术
  • 6,989 篇 医学
    • 5,855 篇 临床医学
    • 991 篇 医学技术(可授医学...
    • 633 篇 基础医学(可授医学...
    • 590 篇 中西医结合
    • 401 篇 公共卫生与预防医...
    • 322 篇 药学(可授医学、理...
  • 4,655 篇 理学
    • 1,111 篇 物理学
    • 853 篇 化学
    • 778 篇 数学
    • 588 篇 生物学
    • 325 篇 地质学
  • 1,673 篇 农学
    • 435 篇 作物学
    • 355 篇 农业资源与环境
    • 324 篇 畜牧学
  • 638 篇 管理学
    • 326 篇 管理科学与工程(可...
  • 337 篇 经济学
    • 305 篇 应用经济学
  • 257 篇 教育学
  • 162 篇 文学
  • 142 篇 法学
  • 138 篇 历史学
  • 81 篇 哲学
  • 68 篇 艺术学
  • 27 篇 军事学

主题

  • 139 篇 ct
  • 113 篇 rare earths
  • 108 篇 患者
  • 97 篇 cancer
  • 96 篇 mri
  • 76 篇 temperature
  • 71 篇 analysis
  • 66 篇 deep learning
  • 60 篇 of
  • 50 篇 corrosion
  • 49 篇 covid-19
  • 48 篇 mr
  • 47 篇 病人
  • 47 篇 and
  • 44 篇 structure
  • 43 篇 method
  • 42 篇 acid
  • 36 篇 performance
  • 33 篇 modeling
  • 32 篇 microstructure

机构

  • 71 篇 university of mi...
  • 67 篇 institute for pa...
  • 67 篇 albert einstein ...
  • 67 篇 dipartimento di ...
  • 67 篇 nikhef p.o.box 4...
  • 67 篇 fysikum stockhol...
  • 67 篇 michigan state u...
  • 66 篇 tifr homi bhabha...
  • 66 篇 institut fur the...
  • 66 篇 dept.of physics ...
  • 65 篇 rudolf peierls c...
  • 65 篇 department of ph...
  • 65 篇 nstitucio catala...
  • 65 篇 cern european or...
  • 65 篇 department of ph...
  • 65 篇 school of physic...
  • 64 篇 max-planck-insti...
  • 64 篇 department of ph...
  • 64 篇 ludwig-maximilia...
  • 63 篇 cea/saclay dsm/i...

作者

  • 85 篇 f.krauss
  • 85 篇 g.weiglein
  • 85 篇 h.murayama
  • 85 篇 j.parsons
  • 85 篇 j.d.jackson
  • 85 篇 g.d'ambrosio
  • 85 篇 r.s.chivukula
  • 85 篇 y.kwon
  • 85 篇 m.white
  • 84 篇 m.drees
  • 79 篇 p.de jong
  • 77 篇 o.dahl
  • 76 篇 s.blusk
  • 76 篇 b.foster
  • 73 篇 g.rybka
  • 72 篇 a.ringwald
  • 71 篇 v.i.belousov
  • 70 篇 j.beringer
  • 66 篇 k.monig
  • 64 篇 m.grnewald

语言

  • 11,062 篇 英文
  • 9,058 篇 中文
  • 1 篇 法文
  • 1 篇 日文
检索条件"作者=S k Awasthi"
20125 条 记 录,以下是1-10 订阅
排序:
A near infrared optical reflector using one-dimensional photonic crystal structure containing chalcogenide glasses
收藏 引用
Optoelectronics Letters 2010年 第6期6卷 406-411页
作者: sanjeev k.srivastava s k awasthi s k srivastava s.P.Ojha Department of Physics Amity Institute of Applied SciencesAmity University Department of Physics Jaypee Institute of Information TechnologyDeemed University Department of Physics Mahila Maha VidyalayBanaras Hindu University Department of Applied Physics Institute of TechnologyBanaras Hindu University
The reflectivity of one-dimensional chalcogenide photonic crystal(CGPC) structure with the first order reflection band in near infrared(NIR) region is theoretically ***-se and Ge-s chalcogenide glasses are used as hig... 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
Intrumer:A Multi Module Distributed Explainable IDs/IPs for securing Cloud Environment
收藏 引用
Computers, Materials & Continua 2025年 第1期82卷 579-607页
作者: Nazreen Banu A s.k.B.sangeetha Department of Computer science and Engineering SRM Institute of Science and TechnologyVadapalani CampusChennai600026Tamil NaduIndia
The increasing use of cloud-based devices has reached the critical point of cybersecurity and unwanted network *** environments pose significant challenges in maintaining privacy and *** approaches,such as IDs,have be... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Nucleoside modified mRNA-lipid nanoparticles as a new delivery platform for the repair of the injured spinal cord
收藏 引用
Neural Regeneration Research 2025年 第8期20卷 2311-2312页
作者: krisztián Pajer Tamás Bellák Antal Nógrádi Department of Anatomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary
spinal cord injury and treatment opportunities:The adult mammalian spinal cord has a very limited capacity for spontaneous regeneration due to various intrinsic molecular and cellular *** the spinal cord neurons have ... 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
High-precision inverse potentials for neutron-proton scattering using piece-wise smooth Morse functions
收藏 引用
Chinese Physics C 2024年 第10期48卷 201-213页
作者: Ayushi awasthi Arushi sharma Ishwar kant O.s.k.s.sastri Department of Physics and Astronomical science Central University of Himachal PradeshDharmshala176215India
The aim of this study is to construct inverse potentials for various ℓ-channels of neutron-proton scattering using a piece-wise smooth Morse function as a *** phase equations for single-channel states and the coupled ... 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
Origin of Red Color of the Lower siwalik Palaeosols:A Micromorphological Approach
收藏 引用
Journal of Mountain science 2009年 第2期6卷 147-154页
作者: seema singh B.Parkash Arun.k.awasthi Department of Earth sciences Indian Institute of Technology RoorkeeRoorkee-247667 India Department of Earth sciences Indian Institute of Technology RoorkeeRoorkee–247667 India
Palaeosols associated with fluvial of the siwalik Group are and lacustrine deposits that occur as thick multiple pedocomplexes. The bright red color of the palaeosol beds has been earlier interpreted as a result of ho... 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
Regression analysis of squeezing-induced hybrid nanofluid flow in Darcy-Forchheimer porous medium
收藏 引用
Applied Mathematics and Mechanics(English Edition) 2025年 第1期46卷 193-208页
作者: k.MUHAMMAD M.sARFRAZ Department of Humanities and sciences School of Electrical Engineering and Computer Science National University of Sciences and Technology Department of Mathematics Quaid-i-Azam University
This article presents a mathematical model addressing a scenario involving a hybrid nanofluid flow between two infinite parallel plates. One plate remains stationary, while the other moves downward at a squeezing velo... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
study of temporal and spectral characteristics of the X-ray emission from solar flares
收藏 引用
Research in Astronomy and Astrophysics 2018年 第10期18卷 33-48页
作者: Veena Choithani Rajmal Jain Arun k.awasthi Geetanjali singh sneha Chaudhari som kumar sharma Dept.of Physics Sh.M.M.Patel Institute of Sciences&ResearchKadi Sarva VishwavidyalayaGandhinagar 382015India CAs key Laboratory of Geospace Environment Department of Geophysics and Planetary SciencesUniversity ofScience and Technology of ChinaHefei 230026China Physical Research Laboratory NavrangpuraAhmedabad 380009India
Temporal and spectral characteristics of X-ray emission from 60 flares of intensity ≥C class observed by the solar X-ray spectrometer (sOXs) during 2003-2011 are presented. We analyze the X-ray emission observed in... 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
Chemoselective synthesis of δ-lactones via benzyl radical cyclization utilizing k_2s_2O_8-CuCl_2
收藏 引用
Chinese Chemical Letters 2008年 第12期19卷 1431-1434页
作者: N.O.Mahmoodi k.Tabatabaeian M.kosari s.Zarrabi Department of Chemistry Faculty of ScienceUniversity of GuilanRashtP.O.Box 1914Iran
Direct chemoselective oxidation of δ-lactones via highly stable benzyl radical cyclization is reported. The one-pot conversion of premade substituted 5-aryl pentanoic acid and 8-benzyl-1-naphthoic acid in the presenc... 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
Baeyer-Villiger oxidation of cyclic ketones utilizing potassium peroxydisulfate(k_2s_2O_8) or sodium perborate(NaBO_3) in acidic media
收藏 引用
Chinese Chemical Letters 2009年 第12期20卷 1400-1404页
作者: s.Zarrabi N.O.Mahmoodi k.Tabatabaeian M.A.Zanjanchi Department of Chemistry Faculty of ScienceUniversity of GuilanRashtP.O.Box 1914Iran
The efficient, green, facile, mild and straightforward conversion procedure for the oxidation of cyclic ketones to lactones at room temperature utilizing potassium peroxydisulfate (k2s2O8) in acidic media is satisfa... 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
spotless days and geomagnetic index as the predictors of solar cycle 25
收藏 引用
Research in Astronomy and Astrophysics 2021年 第9期21卷 21-28页
作者: Dipali s.Burud Rajmal Jain Arun k.awasthi sneha Chaudhari sushanta C.Tripathy Nat Gopalswamy Pramod Chamadia subhash C.kaushik Rajiv Vhatkar Department of Physics Shivaji UniversityKolhapur 416004India Physical Research Laboratory Navrangpura380009 Ahmedabad CAs key Laboratory of Geospace Environment Department of Geophysics and Planetary SciencesUniversity of Science and Technology of ChinaHefei 230026China CAs key Laboratory of solar Activity National Astronomical ObservatoriesBeijing 100101China National solar Observatory 3665 Discovery Drive BoulderCO 80303USA Goddard space Flight Center NASAGreenbeltMD 20771USA Department of Physics Govt.PG Autonomous CollegeSatnaM.P.485001India Department of Physics Govt.P.G.CollegeDatiyaM.P.475661India sh.M.M.Patel Institute of sciences and Research Kadi Sarva VishwavidyalayaGandhinagar 382015India
We study the sunspot activity in relation to spotless days(sLDs)during the descending phase of solar cycles 11-24 to predict the amplitude of sunspot cycle *** this purpose,in addition to sLD,we also consider the geom... 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