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科研机构
北京大学 [225]
内容类型
期刊论文 [206]
其他 [19]
发表日期
2017 [42]
2016 [34]
2015 [20]
2014 [19]
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2012 [11]
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专题:北京大学
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Understanding the Possible Contamination of Ancient Starch Residues by Adjacent Sediments and Modern Plants in Northern China
期刊论文
SUSTAINABILITY, 2017
Ma, Zhikun
;
Zhang, Chi
;
Li, Quan
;
Perry, Linda
;
Yang, Xiaoyan
收藏
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浏览/下载:51/0
  |  
提交时间:2017/12/03
starch grain analysis
potential contamination
cultural deposits
sustainable use
GRAIN ANALYSIS
STONE TOOLS
DOMESTICATION
REVEAL
ARTIFACTS
VALLEY
FOODS
RICE
Simultaneous Estimation of Leaf Area Index, Fraction of Absorbed Photosynthetically Active Radiation, and Surface Albedo From Multiple-Satellite Data
期刊论文
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2017
Ma, Han
;
Liu, Qiang
;
Liang, Shunlin
;
Xiao, Zhiqiang
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2017/12/03
Fraction of absorbed photosynthetically active radiation (FAPAR)
leaf area index (LAI)
multiple sensors
simultaneous estimation
surface albedo
CANOPY REFLECTANCE MODEL
FOLIAGE CLUMPING INDEX
IN-SITU MEASUREMENTS
SNOW-COVER
MODIS DATA
BIDIRECTIONAL REFLECTANCE
ACCURACY ASSESSMENT
NOAA AVHRR
MISR DATA
LAND
Decadal soil carbon accumulation across Tibetan permafrost regions
期刊论文
NATURE GEOSCIENCE, 2017
Ding, Jinzhi
;
Chen, Leiyi
;
Ji, Chengjun
;
Hugelius, Gustaf
;
Li, Yingnian
;
Liu, Li
;
Qin, Shuqi
;
Zhang, Beibei
;
Yang, Guibiao
;
Li, Fei
;
Fang, Kai
;
Chen, Yongliang
;
Peng, Yunfeng
;
Zhao, Xia
;
He, Honglin
;
Smith, Pete
;
Fang, Jingyun
;
Yang, Yuanhe
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
ORGANIC-CARBON
TERRESTRIAL ECOSYSTEMS
ALPINE GRASSLANDS
CLIMATE-CHANGE
CO2 PRODUCTION
PLATEAU
DYNAMICS
MODELS
MINERALIZATION
UNCERTAINTY
新疆小河墓地附近全新世环境演变及其对人类活动的影响(英文)
期刊论文
Journal of Geographical Sciences, 2017
张翼飞
;
莫多闻
;
胡珂
;
宝文博
;
李文瑛
;
伊弟利斯·阿不都热苏勒
收藏
  |  
浏览/下载:119/0
  |  
提交时间:2017/12/03
human-environment interaction
Xiaohe Cemetery
Holocene
environmental change
sedimentary sequence
human-environment interaction
Xiaohe Cemetery
Holocene
environmental change
sedimentary sequence
ARID CENTRAL-ASIA
BOSTEN LAKE
CLIMATE-CHANGE
HUMAN SETTLEMENT
TIBET PLATEAU
RIVER VALLEY
EVOLUTION
BASIN
AGRICULTURE
SEDIMENTS
美国南卡罗来纳州森林湿地十种典型植物凋落叶的分解特征
期刊论文
生态学报, 2017
李巧玲
;
曾辉
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  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
森林湿地
凋落叶
分解速率常数
初始碳组分
C、N元素
forested wetland
leaf litter
decomposition rate constant
initial carbon fractions
C and N
Estimation of leaf area index and its sunlit portion from DSCOVR EPIC data: Theoretical basis
期刊论文
REMOTE SENSING OF ENVIRONMENT, 2017
Yang, Bin
;
Knyazikhin, Yuri
;
Mottus, Matti
;
Rautiainen, Miina
;
Stenberg, Pauline
;
Yan, Lei
;
Chen, Chi
;
Yan, Kai
;
Choi, Sungho
;
Park, Taejin
;
Myneni, Ranga B.
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
DSCOVR mission
Sunlit leaf area index
Spectral invariants
Hot spot
Operational algorithm
Radiative transfer
PHOTOSYNTHETICALLY ACTIVE RADIATION
PHOTON RECOLLISION PROBABILITY
CANOPY SPECTRAL INVARIANTS
SYSTEM DATA RECORD
PART 1
HOTSPOT OBSERVATIONS
VEGETATION STRUCTURE
HYPERSPECTRAL DATA
BOREAL FOREST
MISR DATA
具有超高活性位密度的低温fcc Ru费托合成催化剂设计新策略
期刊论文
物理化学学报, 2017
刘忠范
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
费托合成
活性位
催化剂结构
页岩气
合成气
中东地区
能源安全
纳米催化剂
催化活性
fcc Ru
FISCHER-TROPSCH SYNTHESIS
Steering Surface Reaction at Specific Sites with Self-Assembly Strategy
期刊论文
ACS NANO, 2017
Zhou, Xiong
;
Bebensee, Fabian
;
Yang, Mingmei
;
Bebensee, Regine
;
Cheng, Fang
;
He, Yang
;
Shen, Qian
;
Shang, Jian
;
Liu, Zhirong
;
Besenbacher, Flemming
;
Linderoth, Trolle R.
;
Wu, Kai
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
steering surface reaction
self-assembly strategy
active site
Ullmann coupling
scanning tunneling microscopy
ULLMANN COUPLING REACTION
SCANNING TUNNELING MICROSCOPE
DENSITY-FUNCTIONAL THEORY
AUGMENTED-WAVE METHOD
GRAPHENE NANORIBBONS
HYBRID CHAINS
C-C
HALOGEN
NANOARCHITECTURES
POLYMERIZATION
Electrodeposited Mo3S13 Films from (NH4)(2)Mo3S13 center dot 2H(2)O for Electrocatalysis of Hydrogen Evolution Reaction
期刊论文
ACS APPLIED MATERIALS & INTERFACES, 2017
Du, Kuangzhou
;
Zheng, Lirong
;
Wang, Tanyuan
;
Zhuo, Junqiao
;
Zhu, Zhiwei
;
Shao, Yuanhua
;
Li, Meixian
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
hydrogen-evolution reaction
molybdenum sulfides
electradeposition
relectrocatalysis
Mo3S13
ACTIVE EDGE SITES
RAY-ABSORPTION SPECTROSCOPY
MOS2 ULTRATHIN NANOSHEETS
CLUSTERS
CATALYST
EFFICIENT
DISULFIDE
GRAPHENE
Simple CTAB surfactant-assisted hierarchical lamellar MWW titanosilicate: a high-performance catalyst for selective oxidations involving bulky substrates
期刊论文
CATALYSIS SCIENCE & TECHNOLOGY, 2017
Ji, Xinyi
;
Xu, Le
;
Du, Xin
;
Lu, Xinqing
;
Lu, Wanpeng
;
Sun, Junliang
;
Wu, Peng
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
MOLECULAR-SIEVE
STRUCTURAL-CHARACTERIZATION
CYCLOHEXANONE AMMOXIMATION
POROUS MATERIALS
TI-MWW
ZEOLITE
EPOXIDATION
TITANIUM
SITES
MFI
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