咨询与建议

限定检索结果

文献类型

  • 107,803 篇 期刊文献
  • 5,284 篇 会议
  • 3,868 册 图书
  • 142 篇 学位论文
  • 16 篇 报纸
  • 2 篇 多媒体

馆藏范围

  • 115,404 篇 电子文献
  • 1,791 种 纸本馆藏

日期分布

学科分类号

  • 43,597 篇 工学
    • 8,487 篇 材料科学与工程(可...
    • 5,711 篇 化学工程与技术
    • 4,066 篇 生物医学工程(可授...
    • 2,925 篇 机械工程
    • 2,890 篇 电子科学与技术(可...
    • 2,188 篇 计算机科学与技术...
    • 2,130 篇 动力工程及工程热...
    • 1,924 篇 地质资源与地质工...
    • 1,858 篇 环境科学与工程(可...
    • 1,782 篇 水利工程
    • 1,720 篇 仪器科学与技术
    • 1,604 篇 电气工程
  • 40,530 篇 医学
    • 30,942 篇 临床医学
    • 4,478 篇 医学技术(可授医学...
    • 4,148 篇 中西医结合
    • 3,484 篇 基础医学(可授医学...
    • 2,832 篇 药学(可授医学、理...
    • 2,532 篇 公共卫生与预防医...
    • 1,767 篇 中药学(可授医学、...
  • 20,364 篇 理学
    • 4,061 篇 化学
    • 3,488 篇 物理学
    • 3,043 篇 生物学
    • 2,967 篇 数学
    • 1,925 篇 地质学
  • 10,639 篇 农学
    • 2,565 篇 作物学
    • 2,019 篇 畜牧学
    • 2,000 篇 农业资源与环境
  • 4,091 篇 管理学
    • 1,793 篇 管理科学与工程(可...
  • 2,523 篇 经济学
    • 2,193 篇 应用经济学
  • 2,296 篇 教育学
    • 1,651 篇 教育学
  • 1,446 篇 法学
  • 1,347 篇 文学
  • 558 篇 历史学
  • 537 篇 艺术学
  • 489 篇 哲学
  • 188 篇 军事学

主题

  • 963 篇 ct
  • 844 篇 mri
  • 589 篇 美国
  • 532 篇 病人
  • 504 篇 患者
  • 430 篇 mr
  • 419 篇 and
  • 414 篇 of
  • 346 篇 cancer
  • 247 篇 北美洲
  • 246 篇 治疗
  • 242 篇 产量
  • 241 篇 高效液相色谱法
  • 220 篇 儿童
  • 194 篇 美利坚合众国
  • 193 篇 analysis
  • 177 篇 诊断
  • 167 篇 disease
  • 164 篇 应用
  • 158 篇 含量测定

机构

  • 266 篇 北京大学
  • 256 篇 中国科学院大学
  • 173 篇 清华大学
  • 165 篇 浙江大学
  • 148 篇 华中科技大学
  • 127 篇 同济医科大学附属...
  • 122 篇 中国地质大学
  • 122 篇 上海交通大学
  • 108 篇 华中科技大学同济...
  • 105 篇 西南大学
  • 104 篇 南京农业大学
  • 101 篇 北京科技大学
  • 101 篇 吉林大学
  • 100 篇 四川大学
  • 98 篇 长安大学
  • 95 篇 西北农林科技大学
  • 94 篇 南京大学
  • 90 篇 大连理工大学
  • 82 篇 天津大学
  • 82 篇 哈尔滨工业大学

作者

  • 238 篇 叶鹏
  • 234 篇 m.k
  • 123 篇 刘莉
  • 122 篇 郭战宏
  • 110 篇 郭俊
  • 85 篇 f.krauss
  • 85 篇 g.weiglein
  • 85 篇 h.murayama
  • 82 篇 j.parsons
  • 81 篇 j.d.jackson
  • 74 篇 g.d'ambrosio
  • 74 篇 唐光健
  • 72 篇 r.s.chivukula
  • 55 篇 刘凯
  • 52 篇 王亭忠
  • 46 篇 王斌
  • 46 篇 李军
  • 44 篇 y.kwon
  • 42 篇 余英豪
  • 41 篇 linda m.chung

语言

  • 78,981 篇 中文
  • 38,121 篇 英文
  • 2 篇 日文
  • 1 篇 法文
检索条件"作者=Aldo m.ya-Alvarez"
117115 条 记 录,以下是1-10 订阅
排序:
Liver transplantation is beneficial regardless of cirrhosis stage or acute-on-chronic liver failure grade:A single-center experience
收藏 引用
World Journal of Gastroenterology 2022年 第40期28卷 5881-5892页
作者: Eduardo Cervantes-alvarez mario Vilatoba Nathaly Limon-de la Rosa Osvely mendez-Guerrero David Kershenobich aldo Torre Nalu Navarro-alvarez PECEm Facultad de MedicinaUniversidad Nacional Autónoma de MéxicoMexico City 14080Mexico Department of Gastroenterology Instituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico City 14080Mexico Department of Trasplant Instituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico City 14080Mexico Department of molecular Biology Universidad Panamericana School of MedicineMexico City 03920Mexico Department of Surgery University of Colorado Anschutz Medical CampusDenverCO 80045United States
BACKGROUND Liver transplantation for the most critically ill remains controversial;however,it is currently the only curative treatment *** To assess immediate posttransplant outcomes and compare the short(1 year)and l... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
New Symmetry Reductions,Dromions—Like and Compacton Solutions for a 2D BS(m,n) Equations Hierarchy with Fully Nonlinear Dispersion
收藏 引用
Communications in Theoretical Physics 2002年 第3期37卷 269-276页
作者: yaNZhen-ya DepartmentofAppliedmathematics DalianUniversityofTechnologtyDalian116024China
We have found two types of important exact solutions, compacton solutions, which are solitary waves with the property that after colliding with their own kind, they re-emerge with the same coherent shape very much as ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Optimizing nutrition in hepatic cirrhosis:A comprehensive assessment and care approach
收藏 引用
World Journal of Gastroenterology 2024年 第10期30卷 1313-1328页
作者: Osvely mendez-Guerrero Anaisa Carranza-Carrasco Luis Alberto Chi-Cervera aldo Torre Nalu Navarro-alvarez Department of Gastroenterology Instituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránMexico City 14080Mexico Clínica de Especialidades Gastrointestinales y Hepáticas Hospital Star MedicaMerida 97133YucatanMexico molecular Biology Universidad Panamericana School of MedicineCampus MéxicoMexico City 03920Mexico Department of Surgery University of Colorado Anschutz Medical CampusDenverCO 80045United States
Cirrhosis is considered a growing cause of morbidity and mortality,which represents a significant public health ***,there is no effective treatment to reverse *** primarily centers on addressing the underlying liver c... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
New Compacton Solutions and Solitary Pattern Solutions for modified Nonlinearly Dispersive mK(m,n,a,b) Equation
收藏 引用
Communications in Theoretical Physics 2009年 第10期52卷 637-640页
作者: YU ya-Xuan Department of Applied mathematics Ningbo University Ningbo 315211 China
In this paper exact solutions of a new modified nonlinearly dispersive equation (simply called inK(m, n, a, b) Ua Ub equation), u^m-1 ut + α( u^n)x +β(u^a(u^b)xx)x = 0, is investigated by using some dir... 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
ACTIVE INTERmEDIATES IN PHOTORADICAL AGING OF POLYmERS
收藏 引用
Chinese Journal of Polymer Science 2001年 第2期19卷 167-173页
作者: m.ya.mel’nikov Department of Chemistry M. V.Lomonosov Moscow State University Moscow 119899 Russia
The data referring to the mechanism and efficiency of electronically excited macroradical and radical anionreactions, the important role of photochemical chain reactions in polymers are presented, It was found that by... 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
Screening of traditional Chinese medicine monomers as ribonucleotide reductase m2 inhibitors for tumor treatment
收藏 引用
World Journal of Clinical Cases 2022年 第31期10卷 11299-11312页
作者: ya-ya Qin Song Feng Xiao-Dong Zhang Bin Peng Department of Neurology Affiliated Hospital of North Sichuan Medical CollegeNanchong 637000Sichuan ProvinceChina School of Basic medicine North Sichuan Medical CollegeNanchong 637000Sichuan ProvinceChina
BACKGROUND Ribonucleotide reductase(RR)is a key enzyme in tumor proliferation,especially its *** there are multiple therapeutics for tumors,they all have certain *** their advantages,traditional Chinese medicine(TCm)m... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
The advection-dominated accretion flow+thin accretion disk model for two low-luminosity active galactic nuclei: m81 and NGC 4579
收藏 引用
Chinese Journal of Astronomy and Astrophysics 2009年 第4期9卷 401-408页
作者: ya-Di Xu Xin-Wu Cao Physics Department Shanghai Jiao Tong University Shanghai 200240 China Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030~ China
It was found that advection-dominated accretion flow (ADAF)+thin disk model calculations can reproduce the observed spectral energy distributions (SEDs) of two low-luminosity active galactic nuclei (AGNs), prov... 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
Nonlinear forced vibration in a subcritical regime of a porous functionally graded pipe conveying fluid with a retaining clip
收藏 引用
Applied mathematics and mechanics(English Edition) 2025年 第1期46卷 101-122页
作者: m.GHOLAmI m.EFTEKHARI Department of mechanical Engineering Shahid Bahonar University of Kerman
This study examines the nonlinear behaviors of a clamped-clamped porous pipe made of a functionally graded material(FGm) that conveys fluids and is equipped with a retaining clip, focusing on primary resonance and sub...
来源: 同方期刊数据库 同方期刊数据库 评论
Translating Solutions of the Nonparametric mean Curvature Flow with Nonzero Neumann Boundary Data in Product manifold m^(n)×R^(*)
收藏 引用
Chinese Annals of mathematics,Series B 2022年 第4期43卷 601-620页
作者: ya GAO Yi-Juan GONG Jing mAO Faculty of mathematics and Statistics Key Laboratory of Applied Mathematics of Hubei ProvinceHubei UniversityWuhan 430062China
In this paper,the authors can prove the existence of translating solutions to the nonparametric mean curvature flow with nonzero Neumann boundary data in a prescribed product manifold m^(n)×R,where m^(n) is an n-dime... 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
Double [5]carbohelicene: facile synthesis, chiroptical properties,isomerization study, and lasing application
收藏 引用
Science China Chemistry 2025年 第1期 233-240页
作者: Peipei Liu yantong Li meng-Xiang Wu Hao Kang Xiao-Li Zhao Lin Xu Linlin Liu Xiaodong Li Junfeng Fang Zhiwei Fang ya Cheng Hai-Bo yang Huakang Yu Xueliang Shi State Key Laboratory of Petroleum molecular & Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular Engineering East China Normal University School of Physics and Optoelectronics South China University of Technology Institute of Polymer Optoelectronic materials & Devices State Key Laboratory of Luminescent Materials & Devices South China University of Technology School of Physics and Electronic Science Engineering Research Center of Nanophotonics & Advanced Instrument Ministry of EducationEast China Normal University State Key Laboratory of Precision Spectroscopy School of Physics and Electronic Science East China Normal University
Double carbohelicenes have attracted considerable attention due to their aesthetic structures, distinct π-conjugation extension, inherent chirality, and intriguing optical and electronic properties. Herein, the conci...
来源: 同方期刊数据库 同方期刊数据库 同方期刊数据库 同方期刊数据库 评论