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科研机构
北京大学 [311]
内容类型
期刊论文 [277]
其他 [34]
发表日期
2017 [23]
2016 [41]
2015 [43]
2014 [42]
2013 [29]
2012 [22]
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专题:北京大学
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Estimating structural parameters of agricultural crops from ground-based multi-angular digital images with a fractional model of sun and shade components
期刊论文
AGRICULTURAL AND FOREST METEOROLOGY, 2017
Mu, Xihan
;
Hu, Ronghai
;
Zeng, Yelu
;
McVicar, Tim R.
;
Ren, Huazhong
;
Song, Wanjuan
;
Wang, Yuanyuan
;
Casa, Raffaele
;
Qi, Jianbo
;
Xie, Donghui
;
Yan, Guangjian
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
Leaf area index
Leaf angle distribution
Bidirectional gap fraction
Sun and shade leaves and soil
Field measurement
Canopy reflectance
LEAF-AREA INDEX
DIRECTIONAL BRIGHTNESS TEMPERATURE
SIZE ANALYSIS THEORY
VEGETATION COVER
HEMISPHERICAL PHOTOGRAPHY
PLANT CANOPIES
ROW CROPS
EXTINCTION COEFFICIENT
BROADLEAF CANOPIES
ANGLE DISTRIBUTION
论上扬子区上奥陶统大渡河组
期刊论文
地层学杂志, 2017
唐鹏
;
黄冰
;
吴荣昌
;
樊舅轩
;
燕夔
;
王光旭
;
刘建波
;
王怿
;
詹仁斌
;
戎嘉余
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
生物地层
笔石
几丁类
腕足类
大渡河组
晚奥陶世
滇东北
扬子台地西部
Initial subduction of the Paleo-Pacific Oceanic plate in NE China: Constraints from whole-rock geochemistry and zircon U-Pb and Lu-Hf isotopes of the Khanka Lake granitoids
期刊论文
LITHOS, 2017
Liu, Kai
;
Zhang, Jinjiang
;
Wilde, Simon A.
;
Zhou, Jianbo
;
Wang, Meng
;
Ge, Maohui
;
Wang, Jiamin
;
Ling, Yiyun
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
Central Asian Orogenic Belt
Khanka Block
Khanka Lake granitoids
Adakite
Paleo-Pacific Oceanic plate
ASIAN OROGENIC BELT
EASTERN HEILONGJIANG PROVINCE
A-TYPE GRANITES
I-TYPE GRANITES
TECTONIC IMPLICATIONS
JIAMUSI MASSIF
NORTHEASTERN CHINA
INNER-MONGOLIA
CRUSTAL GROWTH
ACCRETIONARY COMPLEX
Catalytic asymmetric trifluoromethylthiolation via enantioselective [2,3]-sigmatropic rearrangement of sulfonium ylides
期刊论文
NATURE CHEMISTRY, 2017
Zhang, Zhikun
;
Sheng, Zhe
;
Yu, Weizhi
;
Wu, Guojiao
;
Zhang, Rui
;
Chu, Wen-Dao
;
Zhang, Yan
;
Wang, Jianbo
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
2,3 SIGMATROPIC REARRANGEMENT
ALLYL ARYL SULFIDES
C-H ACTIVATION
DONOR/ACCEPTOR CARBENOIDS
BOND FORMATION
METAL CARBENE
TANDEM YLIDE
SULFUR
GENERATION
COMPLEXES
Substrate Doping Effect and Unusually Large Angle van Hove Singularity Evolution in Twisted Bi- and Multilayer Graphene
期刊论文
ADVANCED MATERIALS, 2017
Peng, Han
;
Schroter, Niels B. M.
;
Yin, Jianbo
;
Wang, Huan
;
Chung, Ting-Fung
;
Yang, Haifeng
;
Ekahana, Sandy
;
Liu, Zhongkai
;
Jiang, Juan
;
Yang, Lexian
;
Zhang, Teng
;
Chen, Cheng
;
Ni, Heng
;
Barinov, Alexey
;
Chen, Yong P.
;
Liu, Zhongfan
;
Peng, Hailin
;
Chen, Yulin
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
micro-ARPES
substrate doping effect
twisted bilayer graphene
van Hove singularity
BILAYER GRAPHENE
TRANSISTORS
Clean Transfer of Large Graphene Single Crystals for High-Intactness Suspended Membranes and Liquid Cells
期刊论文
ADVANCED MATERIALS, 2017
Zhang, Jincan
;
Lin, Li
;
Sun, Luzhao
;
Huang, Yucheng
;
Koh, Ai Leen
;
Dang, Wenhui
;
Yin, Jianbo
;
Wang, Mingzhan
;
Tan, Congwei
;
Li, Tianran
;
Tan, Zhenjun
;
Liu, Zhongfan
;
Peng, Hailin
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
clean transfer
graphene liquid cells
graphene single crystals
interfacial force control
suspended graphene membranes
CHEMICAL-VAPOR-DEPOSITION
ELECTRON-MICROSCOPY
INTRINSIC STRENGTH
LAYER GRAPHENE
COPPER FOILS
GROWTH
FILMS
SPECTROSCOPY
Electrical and Photoresponse Properties of Inversion Asymmetric Topological Insulator BiTeCl Nanoplates
期刊论文
CHEMNANOMAT, 2017
Liu, Yujing
;
Yin, Jianbo
;
Tan, Zhenjun
;
Wang, Mingzhan
;
Wu, Jinxiong
;
Liu, Zhongfan
;
Peng, Hailin
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
bismuth tellurochloride
photoresponsivity
strong inversion asymmetry
ternary topological insulator
Cu(I)-Catalyzed Three-Component Coupling of Trifluoromethyl Ketone N-Tosylhydrazones, Alkynes and Azides: Synthesis of Difluoromethylene Substituted 1,2,3-Triazoles
期刊论文
CHINESE JOURNAL OF CHEMISTRY, 2017
Zhang, Zhikun
;
Zhou, Qi
;
Yu, Weizhi
;
Li, Tianjiao
;
Zhang, Yan
;
Wang, Jianbo
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2017/12/03
Cu(I)-catalysis
metal carbene
migratory insertion
beta-fluoride elimination
triazole
COPPER-CATALYZED CYCLOADDITION
CARBENE MIGRATORY INSERTION
1,4,5-TRISUBSTITUTED 1,2,3-TRIAZOLES
REGIOSELECTIVE SYNTHESIS
TERMINAL ALKYNES
DIAZO-COMPOUNDS
ORGANIC AZIDES
METAL CARBENE
BOND
FLUORINE
Synthesis of Di- and Triarylmethanes through Palladium-Catalyzed Reductive Coupling of N-Tosylhydrazones and Aryl Bromides
期刊论文
SYNTHESIS-STUTTGART, 2017
Xia, Yamu
;
Hu, Fangdong
;
Xia, Ying
;
Liu, Zhenxing
;
Ye, Fei
;
Zhang, Yan
;
Wang, Jianbo
收藏
  |  
浏览/下载:11/0
  |  
提交时间:2017/12/03
N-tosylhydrazone
cross-coupling
carbene
palladium
diarylmethane
triarylmethane
FRIEDEL-CRAFTS REACTION
C-H BOND
ARYLBORONIC ACIDS
BENZYLIC HALIDES
CROSS-COUPLINGS
STEREOSPECIFIC FORMATION
NEGISHI REACTIONS
METAL CARBENE
ARYLATION
REAGENTS
Controlled Synthesis of High-Mobility Atomically Thin Bismuth Oxyselenide Crystals
期刊论文
NANO LETTERS, 2017
Wu, Jinxiong
;
Tan, Congwei
;
Tan, Zhenjun
;
Liu, Yujing
;
Yin, Jianbo
;
Dang, Wenhui
;
Wang, Mingzhan
;
Peng, Hailin
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Two-dimensional-materials
bismuth oxyselenide
non-neutral layered semiconductor
high mobility
chemical vapor deposition
controlled synthesis
THERMOELECTRIC PROPERTIES
BI2SE3
BI2O2SE
SURFACE
NANOSHEETS
GRAPHENE
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