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科研机构
北京大学 [412]
内容类型
期刊论文 [222]
其他 [187]
会议论文 [3]
发表日期
2017 [31]
2016 [36]
2015 [42]
2014 [33]
2013 [33]
2012 [29]
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专题:北京大学
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城市形态的分维估算与分形判定
期刊论文
地理科学进展, 2017
陈彦光
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
城市形态
分形
分维
自仿射
盒子计数法
多分形
标度区
urban form
fractals
fractal dimension
self-affinity
box-counting method
multifractals
scaling range
Tree-ring-based SPEI reconstruction in central Tianshan Mountains of China since AD 1820 and links to westerly circulation
期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2017
Jiang, Peng
;
Liu, Hongyan
;
Wu, Xiuchen
;
Wang, Hongya
收藏
  |  
浏览/下载:11/0
  |  
提交时间:2017/12/03
SPEI
tree-ring width
Tianshan Mountains
DROUGHT SEVERITY INDEX
MOISTURE VARIABILITY
NORTH-ATLANTIC
CLIMATE-CHANGE
TIME-SERIES
VEGETATION
IMPACTS
HISTORY
DATASET
SHAN
Optimized Multiresidue Analysis of Organic Contaminants of Priority Concern in a Daily Consumed Fish (Grass Carp)
期刊论文
JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY, 2017
He, Wei
;
Chen, Yanru
;
Yang, Chen
;
Liu, Wenxiu
;
Kong, Xiangzhen
;
Qin, Ning
;
He, Qishuang
;
Xu, Fuliu
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
POLYCYCLIC AROMATIC-HYDROCARBONS
POLYBROMINATED DIPHENYL ETHERS
ACCELERATED SOLVENT-EXTRACTION
GEL-PERMEATION CHROMATOGRAPHY
ORGANOCHLORINE PESTICIDE-RESIDUES
POLYCHLORINATED-BIPHENYLS PCBS
PRESSURIZED LIQUID EXTRACTION
MICROWAVE-ASSISTED EXTRACTION
BIOLOGICAL MATRICES
SUPERCRITICAL-FLUID
Forecasting PM2.5 induced male lung cancer morbidity in China using satellite retrieved PM2.5 and spatial analysis
期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2017
Han, Xiao
;
Liu, Yuqin
;
Gao, Hong
;
Ma, Jianmin
;
Mao, Xiaoxuan
;
Wang, Yuting
;
Ma, Xudong
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/03
PM2.5
Lung cancer
Morbidity
Male
China
Spatial analysis
PARTICULATE AIR-POLLUTION
LEAST-SQUARES REGRESSION
LONG-TERM EXPOSURE
EXTENDED FOLLOW-UP
HARVARD 6 CITIES
FINE PARTICLES
UNITED-STATES
MORTALITY
COMBINATION
NONSMOKERS
Temperature increase reduces global yields of major crops in four independent estimates
期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2017
Zhao, Chuang
;
Liu, Bing
;
Piao, Shilong
;
Wang, Xuhui
;
Lobell, David B.
;
Huang, Yao
;
Huang, Mengtian
;
Yao, Yitong
;
Bassu, Simona
;
Ciais, Philippe
;
Durand, Jean-Louis
;
Elliott, Joshua
;
Ewert, Frank
;
Janssens, Ivan A.
;
Li, Tao
;
Lin, Erda
;
Liu, Qiang
;
Martre, Pierre
;
Mueller, Christoph
;
Peng, Shushi
;
Penuelas, Josep
;
Ruane, Alex C.
;
Wallach, Daniel
;
Wang, Tao
;
Wu, Donghai
;
Liu, Zhuo
;
Zhu, Yan
;
Zhu, Zaichun
;
Asseng, Senthold
收藏
  |  
浏览/下载:14/0
  |  
提交时间:2017/12/03
climate change impact
global food security
major food crops
temperature increase
yield
CLIMATE-CHANGE
WHEAT YIELDS
IMPACTS
GROWTH
RANGE
CHINA
FOOD
Statistical analysis as a tool for assisting geochemical interpretation of the Upper Triassic Yanchang Formation, Ordos Basin, Central China
期刊论文
INTERNATIONAL JOURNAL OF COAL GEOLOGY, 2017
Pan, Songqi
;
Horsfield, Brian
;
Zou, Caineng
;
Yang, Zhi
;
Gao, Dapeng
收藏
  |  
浏览/下载:121/0
  |  
提交时间:2017/12/03
Upper Triassic Yanchang Formation
Ordos Basin
Geochemistry
Molecular composition
Biomarker
Simultaneous R- and Q-mode factor analysis
POLYCYCLIC AROMATIC-HYDROCARBONS
PALEOZOIC MARINE PETROLEUM
OIL-SOURCE CORRELATION
SWEET AREA EVALUATION
MULTIPLE SOURCE ROCKS
NORTH-CENTRAL CHINA
TYPICAL CRUDE OILS
IN-SOURCE ROCKS
GAS ACCUMULATION
TARIM BASIN
山东蒙山第四纪冰川组合遗迹的发现及初步研究
期刊论文
地质论评, 2017
王照波
;
卞青
;
李大鹏
;
王金玉
;
刘彩玲
;
郭启鹏
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
蒙山
冰川遗迹
冰石河
冰碛堤
擦痕
颤痕
Mount Mengshan
glacial relics
felsenmeer
lateral moraine
scratches
chatter marks
Analysis of co-occurrence toponyms in web pages based on complex networks
期刊论文
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 2017
Zhong, Xiang
;
Liu, Jiajun
;
Gao, Yong
;
Wu, Lun
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Toponym
Toponym co-occurrence
Complex network
Link analysis
Geographic information retrieval
COCITATION
CHINESE
Automatic first-arrival picking based on extended super-virtual interferometry with quality control procedure
期刊论文
EXPLORATION GEOPHYSICS, 2017
An, Shengpei
;
Hu, Tianyue
;
Liu, Yimou
;
Peng, Gengxin
;
Liang, Xianghao
收藏
  |  
浏览/下载:11/0
  |  
提交时间:2017/12/03
complex near-surface
first arrival
interferometry
quality control
refraction
static correction
1ST ARRIVAL PICKING
SEISMIC INTERFEROMETRY
MULTIPLES
城市手机用户移动轨迹时空熵特征分析
期刊论文
武汉大学学报(信息科学版), 2017
康朝贵
;
刘瑜
;
邬伦
收藏
  |  
浏览/下载:109/0
  |  
提交时间:2017/12/03
手机话单
个体轨迹
活动提取
出行模式
时空熵
call detailed records
digital traces
displacement identification
mobility patterns
trajectory entropy
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