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科研机构
北京大学 [127]
内容类型
期刊论文 [101]
其他 [26]
发表日期
2017 [7]
2016 [11]
2015 [7]
2014 [6]
2013 [2]
2012 [4]
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专题:北京大学
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Inconsistent estimates of forest cover change in China between 2000 and 2013 from multiple datasets: differences in parameters, spatial resolution, and definitions
期刊论文
SCIENTIFIC REPORTS, 2017
Li, Yan
;
Sulla-Menashe, Damien
;
Motesharrei, Safa
;
Song, Xiao-Peng
;
Kalnay, Eugenia
;
Ying, Qing
;
Li, Shuangcheng
;
Ma, Zongwen
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
LARGE-SCALE DEFORESTATION
LAND-USE CHANGES
DETECTING TRENDS
TREE COVER
AREA
INVENTORY
SATELLITE
CLIMATE
REMOTE
21ST-CENTURY
Late Ordovician (late Katian) cryptospores and chitinozoans from the Mannan-1 borehole, south Tarim Basin, China
期刊论文
PALAEOWORLD, 2017
Tang, Peng
;
Wang, Yi
;
Xu, Hong-He
;
Jiang, Qing
;
Yang, Zhi-Lin
;
Zhan, Jia-Zheng
;
Zhang, Xiao-Le
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Cryptospores
Chitinozoans
Late Katian
Cryptophytes
Palaeoenvironment
Palaeobotany
LOWER MIDDLE ORDOVICIAN
EARLY LAND PLANTS
ANTICOSTI ISLAND
SILURIAN CRYPTOSPORES
PALEOGEOGRAPHIC IMPLICATIONS
MICROFOSSIL RECORD
VAUREAL FORMATION
MIDLAND VALLEY
SAUDI-ARABIA
PARANA BASIN
Enantioselective Total Synthesis of (-)-Pavidolide B
期刊论文
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2017
Zhang, Peng-Peng
;
Yan, Zhi-Ming
;
Li, Yuan-He
;
Gong, Jian-Xian
;
Yang, Zhen
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2017/12/03
NICKEL-CATALYZED HOMOALLYLATION
THIOL-ENE REACTIONS
SUBSTITUTED VINYLCYCLOPROPANES
ALKYLATION REACTIONS
ALDEHYDES
CYCLOPROPANATION
CYCLOADDITIONS
1,3-DIENES
ALKENES
KETONES
Out-of-Plane Piezoelectricity and Ferroelectricity in Layered alpha-In2Se3 Nanoflakes
期刊论文
NANO LETTERS, 2017
Zhou, Yu
;
Wu, Di
;
Zhu, Yihan
;
Cho, Yujin
;
He, Qing
;
Yang, Xiao
;
Herrera, Kevin
;
Chu, Zhaodong
;
Han, Yu
;
Downer, Michael C.
;
Peng, Hailin
;
Lai, Keji
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
In2Se3
2D materials
piezoelectric
ferroelectric
polarization
TRANSITION-METAL DICHALCOGENIDES
THIN-FILM
TOPOLOGICAL INSULATOR
INDIUM SELENIDES
IN2SE3
OPTOELECTRONICS
NANORIBBONS
CRYSTALS
OXIDES
FLAKES
3R MoS2 with Broken Inversion Symmetry: A Promising Ultrathin Nonlinear Optical Device
期刊论文
ADVANCED MATERIALS, 2017
Shi, Jia
;
Yu, Peng
;
Liu, Fucai
;
He, Peng
;
Wang, Rui
;
Qin, Liang
;
Zhou, Junbo
;
Li, Xin
;
Zhou, Jiadong
;
Sui, Xinyu
;
Zhang, Shuai
;
Zhang, Yanfeng
;
Zhang, Qing
;
Sum, Tze Chien
;
Qiu, Xiaohui
;
Liu, Zheng
;
Liu, Xinfeng
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2017/12/03
2ND-HARMONIC GENERATION
ENHANCEMENT
MONOLAYER
GRAPHENE
VALLEY
跨媒体分析与推理:研究进展与发展方向(英文)
期刊论文
Frontiers of Information Technology & Electronic Engineering, 2017
Yu-xin PENG
;
Wen-wu ZHU
;
Yao ZHAO
;
Chang-sheng XU
;
Qing-ming HUANG
;
Han-qing LU
;
Qing-hua ZHENG
;
Tie-jun HUANG
;
Wen GAO
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2017/12/03
跨媒体分析
跨媒体推理
跨媒体应用
Cross-media analysis
Cross-media reasoning
Cross-media applications
RETRIEVAL
KNOWLEDGE
SEMANTICS
IMAGES
CODES
Thermionic electron emission from single carbon nanostructures and its applications in vacuum nanoelectronics
期刊论文
MRS BULLETIN, 2017
Wei, Xianlong
;
Chen, Qing
;
Peng, Lian-Mao
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
ON/OFF CURRENT RATIO
WORK FUNCTION
FIELD
GRAPHENE
NANOTUBES
TEMPERATURE
TRANSISTOR
EMITTERS
DISPLAY
ARRAYS
Adsorption and bioaccessibility of phenanthrene on carbon nanotubes in the in vitro gastrointestinal system
期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2016
Li, Wei
;
Zhao, Jian
;
Zhao, Qing
;
Zheng, Hao
;
Du, Peng
;
Tao, Shu
;
Xing, Baoshan
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
Adsorption
Solubilization
CNTs
Passive dosing
Gastrointestinal fluid
PASSIVE DOSING TECHNIQUE
SOLUBILIZATION
NANOMATERIALS
BINDING
Concentrations of ketamine and norketamine in the water environment in Beijing
期刊论文
Huanjing Kexue/Environmental Science, 2016
Zhang, Hua-Fang
;
Yang, Jun
;
Du, Peng
;
Wang, Cong-Cong
;
Li, Xi-Qing
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/04
Wireless Sensor Network of Typical Land Surface Parameters and Its Preliminary Applications for Coarse-Resolution Remote Sensing Pixel
期刊论文
INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS, 2016
Dou, Baocheng
;
Wen, Jianguang
;
Li, Xiuhong
;
Liu, Qiang
;
Peng, Jingjing
;
Xiao, Qing
;
Zhang, Zhigang
;
Tang, Yong
;
Wu, Xiaodan
;
Lin, Xingwen
;
You, Dongqin
;
Li, Hua
;
Li, Li
;
Zeng, Yelu
;
Cai, Erli
;
Zhang, Jialin
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
LEAF-AREA INDEX
SATELLITE DATA
VALIDATION
PRODUCTS
DESIGN
CHINA
BEHAVIOR
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