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科研机构
北京大学 [173]
内容类型
期刊论文 [153]
其他 [17]
会议论文 [3]
发表日期
2017 [21]
2016 [9]
2015 [12]
2014 [15]
2013 [12]
2012 [15]
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专题:北京大学
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An invariability-area relationship sheds new light on the spatial scaling of ecological stability
期刊论文
NATURE COMMUNICATIONS, 2017
Wang, Shaopeng
;
Loreau, Michel
;
Arnoldi, Jean-Francois
;
Fang, Jingyun
;
Abd Rahman, K.
;
Tao, Shengli
;
de Mazancourt, Claire
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
ECOSYSTEM STABILITY
SPECIES-AREA
CLIMATE-CHANGE
POPULATION-DYNAMICS
TERRESTRIAL GROSS
CARBON STOCKS
FOOD SECURITY
DIVERSITY
BIODIVERSITY
VARIABILITY
Becoming a backpacker in China: A grounded theory approach to identity construction of backpackers
期刊论文
ANNALS OF TOURISM RESEARCH, 2017
Zhang, Jingru
;
Tucker, Hazel
;
Morrison, Alastair M.
;
Wu, Bihu
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Backpackers
Backpacking
Identity
Social construction
Becoming
Grounded theory
LIFE-STYLE TRAVELERS
PERSONAL DEVELOPMENT
BUDGET TRAVELERS
TOURISM
CULTURE
MOTIVATIONS
SCALE
基于BP神经网络的宁夏耕地资源动态变化及预测
期刊论文
湖南农业科学, 2017
李永梅
;
张立根
;
海云瑞
;
董越
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
耕地资源
BP神经网络
主成分分析
宁夏
cultivated land resource
BP neural network
principal component analysis
Ningxia
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
俯冲带深部碳循环:问题与探讨
期刊论文
矿物岩石地球化学通报, 2017
张立飞
;
陶仁彪
;
朱建江
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2017/12/03
深部碳循环
俯冲带
脱碳机制
地幔不均一性
deep carbon cycle
subduction zone
decarbonization mechanism
mantle heterogeneity
Multistage amphiboles from the Galinge iron skarn deposit in Qiman Tagh, western China: evidence of igneous rocks replacement
期刊论文
MINERALOGY AND PETROLOGY, 2017
Yu, M.
;
Feng, C.Y.
;
Zhu, Y.F.
;
Mao, J.W.
;
Zhao, Y.M.
;
Li, D.X.
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/03
Galinge skarn Fe deposit
Qiman Tagh metallogenic belt
Amphibole
Fe-Ti oxides
Hydrothermal fluids
QINGHAI PROVINCE
HYDROTHERMAL FLUIDS
CL INCORPORATION
MELT EQUILIBRIA
ORE-DEPOSITS
MAGNETITE
CHLORINE
NOMENCLATURE
HASTINGSITE
SYSTEMS
新疆准噶尔与华南湘中法门期碳同位素 特征的对比研究
期刊论文
北京大学学报 自然科学版, 2017
宗普
;
马学平
;
张美琼
;
张宇波
;
吕丹
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
准噶尔
湘中
晚泥盆世
法门期
碳同位素
Junggar
central Hunan
Late Devonian
Famennian
carbon isotope
Phase equilibria modelling using major and trace element compositions of zoned garnet and clinopyroxene from southwestern Tianshan eclogites, China
期刊论文
JOURNAL OF ASIAN EARTH SCIENCES, 2017
Zhang, Lijuan
;
Chu, Xu
;
Zhang, Lifei
;
Du, Jinxue
收藏
  |  
浏览/下载:108/0
  |  
提交时间:2017/12/03
Eclogite
Aegirine
Pseudosection
Rare earth element
Southwestern Tianshan
ULTRAHIGH-PRESSURE METAMORPHISM
FLUID-ROCK INTERACTION
EFFECTIVE BULK-COMPOSITION
COESITE-BEARING ECLOGITE
SM-ND GEOCHRONOLOGY
HP-LT ROCKS
P-T PATH
WESTERN TIANSHAN
NW-CHINA
SUBDUCTION-ZONE
Metamorphic evolution and zircon ages of pelitic granulites in eastern Hebei, North China Craton: Insights into the regional Archean P-T-t history
期刊论文
PRECAMBRIAN RESEARCH, 2017
Duan, Zhanzhan
;
Wei, Chunjing
;
Rehman, Hafiz Ur
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
Pelitic granulite
Zircon dating
Metamorphic P-T path
Eastern Hebei
North China Craton
MINERAL EQUILIBRIA CALCULATIONS
PARTIAL MELTING EQUILIBRIA
U-PB
PHASE-EQUILIBRIA
HF ISOTOPES
SYSTEM K2O-FEO-MGO-AL2O3-SIO2-H2O-TIO2-FE2O3
NEOARCHEAN SUBDUCTION
TECTONIC IMPLICATIONS
HORIZONTAL TECTONISM
FACIES METAMORPHISM
Some IR features of SiO4 and OH in coesite, and its amorphization and dehydration at ambient pressure
期刊论文
JOURNAL OF ASIAN EARTH SCIENCES, 2017
Liu, Xi
;
Ma, Yunlu
;
He, Qiang
;
He, Mingyue
收藏
  |  
浏览/下载:14/0
  |  
提交时间:2017/12/03
Coesite
IR features
Water content
Dehydration
Subduction zone fluid
Amorphization
X-RAY-DIFFRACTION
THERMODYNAMIC PROPERTIES
SPINEL LHERZOLITE
ALPHA-QUARTZ
SYSTEM CAO-MGO-AL2O3-SIO2
1-CENTER-DOT-1 GPA
LATTICE-VIBRATIONS
SILICA POLYMORPHS
HIGH-TEMPERATURES
CRYSTAL-STRUCTURE
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