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科研机构
北京大学 [1286]
内容类型
期刊论文 [1161]
其他 [115]
会议论文 [10]
发表日期
2017 [120]
2016 [138]
2015 [139]
2014 [102]
2013 [82]
2012 [90]
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共1286条,第1-10条
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专题:北京大学
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城乡结合部农业地域功能实现程度及变化趋势——以北京为例
期刊论文
地理研究, 2017
刘玉
;
冯健
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  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
城乡结合部
地域功能
农业多功能
实现程度
变化趋势
rural-urban fringe
regional function
multi-functionality of agriculture
execution
change
Potential CO2 emissions from defrosting permafrost soils of the Qinghai-Tibet Plateau under different scenarios of climate change in 2050 and 2070
期刊论文
CATENA, 2017
Bosch, Anna
;
Schmidt, Karsten
;
He, Jin-Sheng
;
Doerfer, Corina
;
Scholten, Thomas
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Permafrost soil
Carbon
Carbon dioxide
Soil respiration
Qinghai-Tibet Plateau
Climate change scenarios
CARBON RELEASE
TERRESTRIAL ECOSYSTEMS
ORGANIC-CARBON
AUTOTROPHIC RESPIRATION
HIGH ASIA
TEMPERATURE
DEGRADATION
PRECIPITATION
GRASSLANDS
DYNAMICS
Impacts of sanitation improvement on reduction of nitrogen discharges entering the environment from human excreta in China
期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2017
Tong Yindong
;
Bu Xiaoge
;
Chen Cen
;
Yang Xi
;
Lu Yiren
;
Liang Huijiao
;
Liu Maodian
;
Lin Huiming
;
Zhang Haoran
;
Lin Yan
;
Zhou Feng
;
Zhao Shen
;
Wu Tianyu
;
Mao Guozhu
;
Zhang Wei
;
Wang Xuejun
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
Nitrogen
Sanitation improvement
Human excreta
Urban and rural
China
MIDDLE-INCOME COUNTRIES
GROUNDWATER QUALITY
EUTROPHICATION
PHOSPHORUS
LAKE
POLLUTION
DIARRHEA
TECHNOLOGIES
ECOSYSTEMS
MARINE
Estimation of nutrient discharge from the Yangtze River to the East China Sea and the identification of nutrient sources
期刊论文
JOURNAL OF HAZARDOUS MATERIALS, 2017
Tong, Yindong
;
Bu, Xiaoge
;
Chen, Junyue
;
Zhou, Feng
;
Chen, Long
;
Liu, Maodian
;
Tan, Xin
;
Yu, Tao
;
Zhang, Wei
;
Mi, Zhaorong
;
Ma, Lekuan
;
Wang, Xuejun
;
Ni, Jing
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Yangtze river
Nutrient discharges
Non-point sources
Yangtze river estuary
Harmful algal blooms
CHANGJIANG RIVER
NITROGEN
FLUXES
IMPACTS
ECOSYSTEM
CLIMATE
CARBON
LOADS
Relativistic electron dynamics produced by azimuthally localized poloidalmode ULF waves: Boomerang-shaped pitch angle evolutions
期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2017
Hao, Y. X.
;
Zong, Q.G.
;
Zhou, X.Z.
;
Rankin, R.
;
Chen, X. R.
;
Liu, Y.
;
Fu, S. Y.
;
Spence, H. E.
;
Blake, J. B.
;
Reeves, G. D.
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
CHARGED-PARTICLE BEHAVIOR
ALLEN PROBES OBSERVATIONS
FREQUENCY GEOMAGNETIC-PULSATIONS
FIELD
Relic Oceanic Crust at Sub-Arc Depth: An Example from UHP Eclogites Enclosed in Serpentinites from the Southwestern Tianshan, China
期刊论文
ACTA GEOLOGICA SINICA-ENGLISH EDITION, 2017
Shen, Tingting
;
Zhang, Lifei
;
Hermann, Joerg
;
Liu, Fenglin
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
EXHUMATION
A direct examination of the dynamics of dipolarization fronts using MMS
期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2017
Yao, Z. H.
;
Rae, I. J.
;
Guo, R. L.
;
Fazakerley, A. N.
;
Owen, C. J.
;
Nakamura, R.
;
Baumjohann, W.
;
Watt, C. E. J.
;
Hwang, K. J.
;
Giles, B. L.
;
Russell, C. T.
;
Torbert, R. B.
;
Varsani, A.
;
Fu, H. S.
;
Shi, Q. Q.
;
Zhang, X.J.
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  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
ELECTROMAGNETIC ENERGY-CONVERSION
FLUX PILEUP REGIONS
EARTH PLASMA SHEET
CLUSTER OBSERVATIONS
MAGNETOSPHERIC MULTISCALE
ELECTRON ACCELERATION
MAGNETIC-FIELD
RECONNECTION
MAGNETOTAIL
EVENT
Spinel and post-spinel phase assemblages in Zn2TiO4: an experimental and theoretical study
期刊论文
PHYSICS AND CHEMISTRY OF MINERALS, 2017
Zhang, Yanyao
;
Liu, Xi
;
Shieh, Sean R.
;
Bao, Xinjian
;
Xie, Tianqi
;
Wang, Fei
;
Zhang, Zhigang
;
Prescher, Clemens
;
Prakapenka, Vitali B.
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  |  
浏览/下载:45/0
  |  
提交时间:2017/12/03
Compressibility
DFT calculations
Diamond-anvil cell
High-P phase transition
Synchrotron X-ray diffraction
Zn2TiO4-CT
Zn2TiO4-Sp
EQUATION-OF-STATE
HIGH-PRESSURE PHASE
SYNTHETIC QANDILITE MG2TIO4
RAY-DIFFRACTION DATA
AMBIENT-TEMPERATURE
VOLUME MEASUREMENTS
MGSIO3 PEROVSKITE
SYSTEM ZNO-TIO2
MAGNESIUM-OXIDE
TRANSITION ZONE
Pressure-induced structural and spin transitions of Fe3S4
期刊论文
SCIENTIFIC REPORTS, 2017
Huang, Shengxuan
;
Kang, Duan
;
Wu, Xiang
;
Niu, Jingjing
;
Qin, Shan
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
AUGMENTED-WAVE METHOD
GREIGITE FE3S4
MAGNETIC-PROPERTIES
CRYSTAL-STRUCTURE
FE3O4
COMPRESSIBILITY
TEMPERATURES
POLYMORPHS
STABILITY
SPECTRA
K2O及其类似氧化物的第一性原理计算
期刊论文
科技通报, 2017
聂淑芳
;
苏星瑶
;
王洋
;
姜源
;
吴圣
;
赵习
;
蒋启财
收藏
  |  
浏览/下载:56/0
  |  
提交时间:2017/12/03
密度泛函理论
立方结构氧化物
状态方程
机械性质
density functional theory
cubic structural oxides
equation of state
mechanical properties
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