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科研机构
北京大学 [99]
内容类型
期刊论文 [76]
其他 [17]
会议论文 [6]
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2017 [6]
2016 [8]
2015 [9]
2014 [6]
2013 [10]
2012 [8]
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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
Dual Solutions of MHD Boundary Layer Flow of a Micropolar Fluid with Weak Concentration over a Stretching/Shrinking Sheet
其他
2017-01-01
Khan, Z. H.
;
Qasim, M.
;
Ishfaq, Naeema
;
Khan, W. A.
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
MHD
micropolar fluid
stretching/shrinking sheet
exact and dual solutions
STAGNATION POINT FLOW
FINITE THIN-FILM
HEAT-TRANSFER
SHRINKING SHEET
UNSTEADY-FLOW
WALL PROBLEM
SURFACE
On iterative algorithms for quantitative photoacoustic tomography in the radiative transport regime
其他
2017-01-01
Wang, Chao
;
Zhou, Tie
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
quantitative photoacoustic tomography
improved fixed-point iteration
radiative transfer equation
Barzilai-Borwein method
RECONSTRUCTION
DISTRIBUTIONS
EQUATION
An organic-inorganic perovskite ferroelectric with large piezoelectric response (vol 357, pg 306, 2017)
期刊论文
SCIENCE, 2017
You, Yu-Meng
;
Liao, Wei-Qiang
;
Zhao, Dewei
;
Ye, Heng-Yun
;
Zhang, Yi
;
Zhou, Qionghua
;
Niu, Xianghong
;
Wang, Jinlan
;
Li, Peng-Fei
;
Fu, Da-Wei
;
Wang, Zheming
;
Gao, Song
;
Yang, Kunlun
;
Liu, Jun-Ming
;
Li, Jiangyu
;
Yan, Yanfa
;
Xiong, Ren-Gen
收藏
  |  
浏览/下载:114/0
  |  
提交时间:2017/12/03
ROOM-TEMPERATURE FERROELECTRICITY
LEAD-FREE PIEZOCERAMICS
DIISOPROPYLAMMONIUM BROMIDE
CHARGE-TRANSFER
TITANATE
CERAMICS
CRYSTALS
Heat Transfer of Winglet Tips in a Transonic Turbine Cascade
期刊论文
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2017
Zhong, Fangpan
;
Zhou, Chao
;
Ma, H.
;
Zhang, Q.
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
AEROTHERMAL PERFORMANCE
TRANSFER COEFFICIENTS
BLADE TIPS
SQUEALER
GEOMETRY
CLEARANCE
LEAKAGE
REGIONS
FLOW
Theoretical and numerical study of enhanced heat transfer in partitioned thermal convection
期刊论文
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2017
Chen, J.
;
Bao, Y.
;
Yin, Z. X.
;
She, Z. S.
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
Rayleigh-Benard convection
Heat transfer
Natural convection
Forced convection
Turbulence
RAYLEIGH-BENARD CONVECTION
ASPECT RATIO DEPENDENCE
TURBULENT CONVECTION
NATURAL-CONVECTION
TRANSPORT
PRANDTL
SURFACE
NUMBERS
FLOW
Aquatic biota as potential biological indicators of the contamination, bioaccumulation and health risks caused by organochlorine pesticides in a large, shallow Chinese lake (Lake Chaohu)
期刊论文
ECOLOGICAL INDICATORS, 2016
Liu, Wen-Xiu
;
Wang, Yan
;
He, Wei
;
Qin, Ning
;
Kong, Xiang-Zhen
;
He, Qi-Shuang
;
Yang, Bin
;
Yang, Chen
;
Jiang, Yu-Jiao
;
Jorgensen, Sven Erik
;
Xu, Fu-Liu
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2017/12/03
Organochlorine pesticides
Residual level
Bioaccumulation
Health risks
Aquatic biota
Biological indicator
Lake Chaohu
MARINE FOOD-WEB
POLYBROMINATED DIPHENYL ETHERS
PERSISTENT ORGANIC POLLUTANTS
OCTANOL/WATER PARTITION-COEFFICIENT
POLYCHLORINATED-BIPHENYLS PCBS
FRESH-WATER FISH
HONG-KONG
TROPHIC TRANSFER
BIOCONCENTRATION FACTOR
AROMATIC-HYDROCARBONS
Bioaccessibility of nitro- and oxy-PAHs in fuel soot assessed by an in vitro digestive model with absorptive sink
期刊论文
ENVIRONMENTAL POLLUTION, 2016
Zhang, Yanyan
;
Pignatello, Joseph J.
;
Tao, Shu
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/04
PAH derivatives
Bioaccessibility
Digestive model
Soot
POLYCYCLIC AROMATIC-HYDROCARBONS
ORGANIC POLLUTANTS
HUMAN EXPOSURE
HOUSE-DUST
CONTAMINATED SOILS
OXYGENATED-PAHS
NITRATED-PAHS
BLACK CARBON
AMBIENT AIR
URBAN
植被叶片叶绿素含量反演的光谱尺度效应研究
期刊论文
光谱学与光谱分析, 2016
姜海玲
;
张立福
;
杨杭
;
陈小平
;
童庆禧
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
光谱指数
植被叶片叶绿素含量
辐射传输
光谱响应
尺度效应
Spectral indices
Vegetation leaf chlorophyll content
Radiative transfer
Spectral response
Spectral scale effect
PATTERN DECOMPOSITION METHOD
PRECISION AGRICULTURE
HYPERSPECTRAL DATA
AREA INDEX
VALIDATION
REFLECTANCE
HYPERION
LAI
Broadband optical properties of graphene by spectroscopic ellipsometry
期刊论文
CARBON, 2016
Li, Wei
;
Cheng, Guangjun
;
Liang, Yiran
;
Tian, Boyuan
;
Liang, Xuelei
;
Peng, Lianmao
;
Walker, A. R. Hight
;
Gundlach, David J.
;
Nguyen, Nhan V.
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
BILAYER GRAPHENE
FILMS
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