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科研机构
北京大学 [15]
内容类型
期刊论文 [13]
其他 [2]
发表日期
2017 [3]
2016 [6]
2015 [3]
2012 [1]
2010 [1]
2008 [1]
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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
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
Palladium-Catalyzed Synthesis of Indoles and Isoquinolines with in Situ Generated Phosphinimine
期刊论文
JOURNAL OF ORGANIC CHEMISTRY, 2017
Zhou, Qi
;
Zhang, Zhikun
;
Zhou, Yujing
;
Li, Shichao
;
Zhang, Yan
;
Wang, Jianbo
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
CARBENE MIGRATORY INSERTION
ALPHA-DIAZOCARBONYL COMPOUNDS
H BOND FUNCTIONALIZATION
MEDIATED ELECTROPHILIC CYCLIZATION
OXO GOLD CARBENES
ENE-YNE-KETONES
C-H
DIAZO-COMPOUNDS
INTERNAL ALKYNES
METAL CARBENE
Scale Effect in Indirect Measurement of Leaf Area Index
期刊论文
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2016
Yan, Guangjian
;
Hu, Ronghai
;
Wang, Yiting
;
Ren, Huazhong
;
Song, Wanjuan
;
Qi, Jianbo
;
Chen, Ling
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Beer&apos
gap probability
indirect measurement
leaf area index (LAI)
scale effect
segment length
MULTISPECTRAL CANOPY IMAGER
SIZE ANALYSIS THEORY
HEMISPHERICAL PHOTOGRAPHY
OPTICAL MEASUREMENTS
MODEL
ARCHITECTURE
FORESTS
SURFACE
REFLECTANCE
INFORMATION
s law
Cu(I)-Catalyzed Tandem Reaction of Carbene Coupling and Horner-Wadsworth-Emmons Type Olefination: Access toward Enynes
期刊论文
ORGANIC LETTERS, 2016
Zhou, Yujing
;
Ye, Fei
;
Zhou, Qi
;
Zhang, Yan
;
Wang, Jianbo
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
ALPHA-DIAZOCARBONYL COMPOUNDS
TERMINAL ALKYNES SYNTHESIS
ENE-YNE-KETONES
N-TOSYLHYDRAZONES
CONJUGATED ENYNES
MIGRATORY INSERTION
DIAZO-COMPOUNDS
METAL CARBENE
VINYL IODIDES
ONE-POT
Rh(l)-Catalyzed Reaction of Trifluoromethylketone N-Tosylhydrazones and Arylboronates
期刊论文
Chinese Journal of Chemistry, 2016
Zhang Zhikun
;
Yu Weizhi
;
Zhou Qi
;
Li Tianjiao
;
Zhang Yan
;
Wang Jianbo
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
Rh(I)-catalysis
metal carbene
migratory insertion
β-fluoride elimination
Enantioselective Synthesis of Trisubstituted Allenes via Cu(I)-Catalyzed Coupling of Aryldiazoalkanes with Terminal Alkynes
其他
2016-01-01
Wen Dao Chu
;
Lei Zhang
;
Zhikun Zhang
;
Qi Zhou
;
Yan Zhang
;
Jianbo Wang
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
chiral
asymmetric
featured
catalyzed
insertion
blocks
chiral
asymmetric
featured
catalyzed
insertion
blocks
Enantioselective Synthesis of Trisubstituted Allenes via Cu(I)-Catalyzed Coupling of Diazoalkanes with Terminal Alkynes
期刊论文
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016
Chu, Wen-Dao
;
Zhang, Lei
;
Zhang, Zhikun
;
Zhou, Qi
;
Mo, Fanyang
;
Zhang, Yan
;
Wang, Jianbo
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
CATALYTIC ASYMMETRIC-SYNTHESIS
AXIALLY CHIRAL ALLENES
N-TOSYLHYDRAZONES
PROPARGYLIC PHOSPHATES
ALPHA-DIAZOESTERS
EFFICIENT SYNTHESIS
KINETIC RESOLUTION
DIAZO-COMPOUNDS
ALDOL REACTION
ALLENOATES
Rh(I)-Catalyzed Reaction of Trifluoromethylketone N-Tosylhydrazones and Arylboronates
期刊论文
CHINESE JOURNAL OF CHEMISTRY, 2016
Zhang, Zhikun
;
Yu, Weizhi
;
Zhou, Qi
;
Li, Tianjiao
;
Zhang, Yan
;
Wang, Jianbo
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/04
Rh(I)-catalysis
metal carbene
migratory insertion
beta-fluoride elimination
DIFLUOROMETHYL 2-PYRIDYL SULFONE
CARBENE MIGRATORY INSERTION
GEM-DIFLUOROOLEFINATION
DIAZO-COMPOUNDS
CATALYZED REACTIONS
METAL CARBENE
BOND
DIFLUOROCARBENE
METHODOLOGY
ALDEHYDES
Cu(I)-Catalyzed Cross-Coupling of Terminal Alkynes with Trifluoromethyl Ketone N-Tosylhydrazones: Access to 1,1-Difluoro-1,3-enynes
期刊论文
organic letters, 2015
Zhang Zhikun
;
Zhou Qi
;
Yu Weizhi
;
Li Tianjiao
;
Wu Guojiao
;
Zhang Yan
;
Wang Jianbo
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2015/11/13
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