咨询与建议

限定检索结果

文献类型

  • 419,870 篇 期刊文献
  • 29,877 篇 会议
  • 15 册 图书

馆藏范围

  • 449,762 篇 电子文献
  • 0 种 纸本馆藏

日期分布

学科分类号

  • 190,738 篇 医学
    • 148,632 篇 临床医学
    • 13,043 篇 中西医结合
    • 10,879 篇 基础医学(可授医学...
    • 9,042 篇 公共卫生与预防医...
    • 9,014 篇 药学(可授医学、理...
    • 8,740 篇 医学技术(可授医学...
    • 5,834 篇 中药学(可授医学、...
  • 168,524 篇 工学
    • 37,205 篇 材料科学与工程(可...
    • 35,016 篇 化学工程与技术
    • 15,807 篇 计算机科学与技术...
    • 15,167 篇 电子科学与技术(可...
    • 12,223 篇 机械工程
    • 9,188 篇 控制科学与工程
    • 9,031 篇 软件工程
    • 8,984 篇 生物医学工程(可授...
    • 8,184 篇 仪器科学与技术
    • 8,143 篇 力学(可授工学、理...
    • 7,704 篇 电气工程
    • 7,567 篇 光学工程
    • 7,255 篇 动力工程及工程热...
    • 6,264 篇 环境科学与工程(可...
  • 127,483 篇 理学
    • 31,414 篇 数学
    • 26,176 篇 化学
    • 25,332 篇 物理学
    • 19,622 篇 生物学
    • 5,891 篇 地质学
  • 29,157 篇 农学
    • 8,916 篇 作物学
    • 5,828 篇 农业资源与环境
  • 14,407 篇 管理学
    • 9,380 篇 管理科学与工程(可...
  • 8,414 篇 经济学
    • 7,813 篇 应用经济学
  • 3,760 篇 文学
  • 3,482 篇 教育学
  • 2,077 篇 法学
  • 1,104 篇 艺术学
  • 741 篇 军事学
  • 716 篇 历史学
  • 611 篇 哲学

主题

  • 5,087 篇 cancer
  • 4,123 篇 of
  • 3,857 篇 case report
  • 3,128 篇 and
  • 2,848 篇 treatment
  • 2,792 篇 apoptosis
  • 2,568 篇 prognosis
  • 2,563 篇 diagnosis
  • 2,499 篇 liver
  • 2,416 篇 disease
  • 2,382 篇 covid-19
  • 2,175 篇 surgery
  • 2,144 篇 analysis
  • 2,027 篇 inflammation
  • 2,005 篇 hepatocellular c...
  • 1,999 篇 model
  • 1,811 篇 cell
  • 1,762 篇 system
  • 1,603 篇 diabetes
  • 1,540 篇 machine learning

机构

  • 1,301 篇 university of ch...
  • 501 篇 china
  • 397 篇 department
  • 374 篇 北京大学
  • 367 篇 ieee
  • 341 篇 university of ch...
  • 281 篇 department of ma...
  • 272 篇 department of ch...
  • 237 篇 department of ch...
  • 218 篇 清华大学
  • 203 篇 department of au...
  • 160 篇 中国地质大学
  • 157 篇 peking universit...
  • 152 篇 浙江大学
  • 148 篇 usa
  • 132 篇 中国科学院大学
  • 128 篇 beijing
  • 127 篇 department of el...
  • 127 篇 department of co...
  • 125 篇 南京大学

作者

  • 696 篇 wei zhang
  • 649 篇 wei wang
  • 617 篇 wei li
  • 541 篇 li li
  • 492 篇 li zhang
  • 489 篇 jing wang
  • 470 篇 lei wang
  • 461 篇 wei liu
  • 422 篇 yan li
  • 399 篇 jing li
  • 395 篇 jing zhang
  • 387 篇 jun wang
  • 377 篇 yang yang
  • 355 篇 hui wang
  • 345 篇 yu wang
  • 331 篇 yang liu
  • 327 篇 lei zhang
  • 319 篇 yu zhang
  • 310 篇 yan wang
  • 289 篇 jian wang

语言

  • 362,109 篇 英文
  • 87,648 篇 中文
  • 5 篇 法文
检索条件"机构=Department of Forest Valuation"
449762 条 记 录,以下是1-10 订阅
排序:
valuation of forest carbon sinks in China within the framework of the system of national accounts
收藏 引用
Journal of forestry Research 2016年 第6期27卷 1321-1328页
作者: Ying Zhang Jiancheng Chen Mingxing Hu Armin Offer School of Economics and Management Beijing Forestry University department of forest valuation State Forest Enterprise Hessen-Forst
To better promote forest resource management and strengthen the development of forest carbon sink marketization, this paper studied the accounting of forest carbon sinks from 2003 to 2008 based on a system of national... 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
Smart Cellulose‑Based Janus Fabrics with Switchable Liquid Transportation for Personal Moisture and Thermal Management
收藏 引用
Nano-Micro Letters 2025年 第1期17卷 333-347页
作者: Jianfeng Xi Yanling Lou Liucheng Meng Chao Deng Youlu Chu Zhaoyang Xu Huining Xiao Weibing Wu Jiangsu Co‑Innovation Center of Efficient Processing and Utilization of forest Resources International Innovation Center for Forest Chemicals and MaterialsJiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass MaterialsNanjing Forestry UniversityNanjing 210037People’s Republic of China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China department of Chemical Engineering University of New BrunswickFrederictonNB E3B 5A3Canada Macromolecular Chemistry and Bavarian Polymer Institute University of BayreuthBayreuth 95440Germany
The Janus fabrics designed for personal moisture/thermal regulation have garnered significant attention for their potential to enhance human ***,the development of smart and dynamic fabrics capable of managing persona... 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
Proton pump inhibitors and all-cause mortality risk among cancer patients
收藏 引用
World Journal of Clinical Oncology 2025年 第1期16卷 34-42页
作者: Arunkumar Krishnan Carolin Victoria Schneider Declan Walsh department of Supportive Oncology Atrium Health Levine CancerCharlotteNC 28204United States department of Medicine Section of Hematology and OncologyWake Forest University School of MedicineWinston-SalemNC 27101United States department of Medicine Ⅲ GastroenterologyMetabolic Diseasesand Intensive CareUniversity Hospital RWTH AachenAachen 52074Germany
BACKGROUND Proton pump inhibitors(PPIs)are widely used,including among cancer patients,to manage gastroesophageal reflux and other gastric acid-related *** evidence suggests associations between long-term PPI use and ... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Below-ground growth characteristics of 13-year-old Pinus densiflora on different contour conditions in a post-fire plantation in Samcheuk,Korea
收藏 引用
Journal of forestry Research 2017年 第5期28卷 1007-1018页
作者: Do-Hyun Kim Sung-Jun Na Sea-Hyun Kim Ewane Basil Ewane Dae-Bong Kang Do-Hyung Lee department of forest Resources Yeungnam University department of forest Genetic Resources National Institute of Forest Science
We estimated the growth volume of artificially reforested Pinus densiflora in a post-fire area on three different contour conditions by comparing and analyzing the vertical and horizontal distributions of below-ground... 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
Maximizing biomass utilization: An integrated strategy for coproducing multiple chemicals
收藏 引用
Journal of Energy Chemistry 2025年 第1期100卷 180-191页
作者: Byeongchan Ahn Sua Jo Jonggeol Na J.Jay Liu Young-Ju Kim Wangyun Won department of Chemical and Biological Engineering Korea University department of Chemical Engineering (Integrated process) Kyung Hee University department of Chemical Engineering and Materials Science Ewha Womans University department of Chemical Engineering Pukyong National University Resources Engineering Plant Research department Korea Institute of Geoscience and Mineral Resources
Lignocellulosic biomass is one of the viable solutions to alleviate the global warming. However, the limited utilization of biomass majorly focused on cellulose and hemicellulose restricts the economic and environment... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
Automated tree detection and crown delineation using airborne laser scanner data in heterogeneous East-Central Europe forest with different species mix
收藏 引用
Journal of forestry Research 2017年 第5期28卷 1049-1059页
作者: Róbert Smreek Ivan Sakov Zuzana Michnová Ján Tuek department of forest Management and Geodesy Technical University in Zvolen department of forest Policy Economics and Forest ManagementNational Forest Centre-Forest Research Institute Zvolen
Identifying tree locations is a basic step in the derivation of other tree parameters using remote sensing techniques, particularly when using airborne laser scanning. There are several techniques for identifying tree... 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
A structural relationship between place attachment and intention to conserve landscapes–a case study of Harz National Park in Germany
收藏 引用
Journal of Mountain Science 2017年 第5期14卷 998-1007页
作者: Dukjae LEE Ju-Hyoung LEE department of forest Resources University of Daegu department of forest Resources Yeungnam University
Place attachment is an important motivation for people to spend more time outdoors and to protect *** study explores visitors' intention to conserve natural landscapes based on the relationship with their place attach... 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
Status and prospects for symmetric organic redox flow batteries
收藏 引用
Journal of Energy Chemistry 2025年 第1期100卷 125-143页
作者: Md Al Raihan C.Adam Dyker department of Chemistry University of New Brunswick
As environmental concerns from fossil fuel consumption intensify, large-scale energy storage becomes imperative for the integration of renewable sources like wind, hydro, and solar with the electrical *** flow batteri... 详细信息
来源: 同方期刊数据库 同方期刊数据库 评论
Preliminary assessment of growth and survival of green alder(Alnus viridis), a potential biological stabilizer on fly ash disposal sites
收藏 引用
Journal of forestry Research 2015年 第1期26卷 131-136页
作者: Marcin Pietrzykowski Wojciech Krzaklewski Bartomiej Wo department of forest Ecology Forest FacultyUniversity of Agriculture in Krakow
This paper presents preliminary assessment of seedling survival and growth of green alder(Alnus viridis(Chaix) DC. in Lam. & DC.) planted on fly ash disposal sites. This kind of post-industrial site is extremely ... 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
Soil quality index as a tool for Scots pine(Pinus sylvestris) monoculture conversion planning on afforested,reclaimed mine land
收藏 引用
Journal of forestry Research 2014年 第1期25卷 63-74页
作者: Marcin Pietrzykowski department of forest Ecology Forest FacultyUniversity of Agriculture in Krakow
In Central Europe, a large portion of post-mining sites were afforested with Scots pine, which is characterized by good adaptability and a tolerance for poor habitat at the beginning of forest ecosystem development. C... 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