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科研机构
北京大学 [62]
内容类型
期刊论文 [38]
其他 [20]
会议论文 [4]
发表日期
2017 [10]
2016 [8]
2015 [6]
2014 [3]
2013 [3]
2012 [2]
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专题:北京大学
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植物生长型显著影响三峡大老岭地区木本植物种子质量的海拔格局
期刊论文
植物生态学报, 2017
李道新
;
李果
;
沈泽昊
;
徐慎东
;
韩庆瑜
;
王功芳
;
田风雷
收藏
  |  
浏览/下载:110/0
  |  
提交时间:2017/12/03
木本植物
种子质量
海拔
生长型
三峡大老岭
woody plant
seed mass
elevation
growth-form
Dalaoling in the Three Gorges
Polycyclic aromatic hydrocarbons in ambient air, surface soil and wheat grain near a large steel-smelting manufacturer in northern China
期刊论文
环境科学学报(英文版), 2017
Weijian Liu
;
Yilong Wang
;
Yuanchen Chen
;
Shu Tao
;
Wenxin Liu
收藏
  |  
浏览/下载:106/0
  |  
提交时间:2017/12/03
PAHs Ambient air Surface soil Wheat grain Steel-smelting activity
PAHs
Ambient air
Surface soil
Wheat grain
Steel-smelting activity
Polycyclic aromatic hydrocarbons in ambient air, surface soil and wheat grain near a large steel-smelting manufacturer in northern China
期刊论文
JOURNAL OF ENVIRONMENTAL SCIENCES, 2017
Liu, Weijian
;
Wang, Yilong
;
Chen, Yuanchen
;
Tao, Shu
;
Liu, Wenxin
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
PAHs
Ambient air
Surface soil
Wheat grain
Steel-smelting activity
SOURCE APPORTIONMENT
SEASONAL-VARIATION
DIAGNOSTIC RATIOS
ORGANIC-COMPOUNDS
EMISSION SOURCES
PINE NEEDLES
PADDY FIELD
URBAN AIR
PAHS
PLAIN
Uptake of PAHs by cabbage root and leaf in vegetable plots near a large coking manufacturer and associations with PAHs in cabbage core
期刊论文
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2017
Xiong, GuanNan
;
Zhang, YunHui
;
Duan, YongHong
;
Cai, ChuanYang
;
Wang, Xin
;
Li, JingYa
;
Tao, Shu
;
Liu, WenXin
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
PAHs
Coking industry
Air
Rhizosphere soil
Cabbage
Absorption
POLYCYCLIC AROMATIC-HYDROCARBONS
AIR-SOIL EXCHANGE
SOURCE APPORTIONMENT
ORGANOCHLORINE PESTICIDES
ORGANIC-CHEMICALS
EMISSION FACTORS
SOUTH CHINA
PADDY FIELD
URBAN AREAS
PLANTS
Exposure assessment of PCDD/Fs for the population living in the vicinity of municipal waste incinerator: Additional exposure via local vegetable consumption
期刊论文
ENVIRONMENTAL POLLUTION, 2017
Ben, Yujie
;
Li, Tong
;
Wan, Yi
;
Dong, Zhaomin
;
Hu, Jianying
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
Dioxin
Emission
Air
Vegetation
Local foods
Human exposure
DIBENZO-P-DIOXINS
HEALTH-RISK ASSESSMENT
DIETARY-INTAKE
PINE NEEDLES
ENVIRONMENTAL SURVEILLANCE
POLYCHLORINATED-BIPHENYLS
PRONOUNCED REDUCTIONS
CONGENER PROFILES
LONG-TERM
EMISSIONS
Quality assessment for real out-of-focus blurred images
期刊论文
JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION, 2017
Liu, Yutao
;
Gu, Ke
;
Zhai, Guangtao
;
Liu, Xianming
;
Zhao, Debin
;
Gao, Wen
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Visual quality assessment
Out-of-focus blur
Blind/no-reference
Phase congruency
Visual saliency
VISUAL SALIENCY DETECTION
STATISTICS
DOMAIN
Learning in multimodal and mixmodal data: locality preserving discriminant analysis with kernel and sparse representation techniques
期刊论文
MULTIMEDIA TOOLS AND APPLICATIONS, 2017
Zhang, Qi
;
Chu, Tianguang
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Multimodal and mixmodal data
Feature extraction
Kernel theory
Sparse representation
FACE RECOGNITION
IMAGE
PROJECTIONS
Necessary and sufficient conditions for controllability of multi-agent systems with special topology
会议论文
GUAN Yongqiang
;
WANG Long
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Multi-agent system
Controllability
Local interaction
Leader-follower framework
Multi-agent system
Controllability
Local interaction
Leader-follower framework
SWAROVsky: Optimizing Resource Loading for Mobile Web Browsing
期刊论文
IEEE TRANSACTIONS ON MOBILE COMPUTING, 2017
Liu, Xuanzhe
;
Ma, Yun
;
Wang, Xinyang
;
Liu, Yunxin
;
Xie, Tao
;
Huang, Gang
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
Mobile web
resource loading
optimization
Optimal design of hierarchical grid-stiffened cylindrical shell structures based on linear buckling and nonlinear collapse analyses
期刊论文
THIN-WALLED STRUCTURES, 2017
Zhao, Yunong
;
Chen, Mingji
;
Yang, Fan
;
Zhang, Ling
;
Fang, Daining
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
Stiffened cylindrical shell
Linear buckling analysis
Nonlinear collapse analysis
Optimization
Weight
WELD-INDUCED IMPERFECTIONS
STABILITY BEHAVIOR
PERFORMANCE GAINS
AXIAL-COMPRESSION
CUTOUT SUBJECT
OPTIMIZATION
SENSITIVITY
PLATES
PANELS
FRAMEWORK
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