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科研机构
北京大学 [165]
内容类型
期刊论文 [135]
其他 [25]
会议论文 [5]
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2017 [15]
2016 [25]
2015 [15]
2014 [14]
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专题:北京大学
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Nitrogen deposition has minor effect on soil extracellular enzyme activities in six Chinese forests
期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2017
Jing, Xin
;
Chen, Xiao
;
Tang, Mao
;
Ding, Zongju
;
Jiang, Lai
;
Li, Peng
;
Ma, Suhui
;
Tian, Di
;
Xu, Longchao
;
Zhu, Jianxiao
;
Ji, Chengjun
;
Shen, Haihua
;
Zheng, Chengyang
;
Fang, Jingyun
;
Zhu, Biao
收藏
  |  
浏览/下载:110/0
  |  
提交时间:2017/12/03
Nitrogen deposition
Soil enzyme
Stoichiometry
Decomposition
Nutrient cycling
Forest ecosystem
MICROBIAL COMMUNITY COMPOSITION
ORGANIC-MATTER DECOMPOSITION
NORTHERN HARDWOOD FORESTS
ECOENZYMATIC STOICHIOMETRY
DEPTH
PHOSPHORUS
BIOMASS
CARBON
BACTERIAL
INPUTS
恢复力视角下的乡村空间演变与重构
期刊论文
生态学报, 2017
张甜
;
刘焱序
;
王仰麟
收藏
  |  
浏览/下载:113/0
  |  
提交时间:2017/12/03
乡村空间演变
乡村空间重构
恢复力
社会-生态系统
适应性循环
rural spatial evolution
rural spatial reconstruction
resilience
social-ecological system
adaptive cycle
y Nitrous oxide emissions from different land uses affected by managements on the Qinghai-Tibetan Plateau
期刊论文
AGRICULTURAL AND FOREST METEOROLOGY, 2017
Zhang, Zhenhua
;
Zhu, Xiaoxue
;
Wang, Shiping
;
Duan, Jichuang
;
Chang, Xiaofeng
;
Luo, Caiyun
;
He, Jin-Sheng
;
Wilkes, Andreas
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
Land use change
Nitrogen fertilization
Conventional tillage
Nitrous oxide emissions
GREENHOUSE-GAS EMISSIONS
ALPINE MEADOW
N2O EMISSIONS
TILLAGE SYSTEMS
CARBON-DIOXIDE
NO-TILL
SOIL
GRASSLAND
ECOSYSTEM
CLIMATE
A proposal for the theoretical analysis of the interactive coupled effects between urbanization and the eco-environment in mega-urban agglomerations
期刊论文
JOURNAL OF GEOGRAPHICAL SCIENCES, 2017
Fang Chuanglin
;
Zhou Chenghu
;
Gu Chaolin
;
Chen Liding
;
Li Shuangcheng
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/03
mega-urban agglomeration
urbanization
eco-environment
interactive coupled effects
coupling theory
process of theoretical analysis
SUSTAINABILITY SCIENCE
CENTRAL CHINA
RESOURCES
CLUSTERS
CORRIDOR
TIANJIN
GROWTH
SYSTEM
Pore characteristics differences between clay-rich and clay-poor shales of the Lower Cambrian Niutitang Formation in the Northern Guizhou area, and insights into shale gas storage mechanisms
期刊论文
INTERNATIONAL JOURNAL OF COAL GEOLOGY, 2017
Wu, Chenjun
;
Tuo, Jincai
;
Zhang, Leifu
;
Zhang, Mingfeng
;
Li, Jing
;
Liu, Yan
;
Qian, Yu
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Niutitang Formation
Organic-rich shales
Clay content
Biogenic quartz
Pore characteristics
NORTHEASTERN BRITISH-COLUMBIA
MISSISSIPPIAN BARNETT SHALE
SOUTHERN SICHUAN BASIN
UPPER YANGTZE PLATFORM
FORT-WORTH BASIN
ORGANIC-MATTER
GEOCHEMICAL CHARACTERISTICS
BLACK SHALES
SOUTHWESTERN CHINA
SEDIMENTARY BASIN
Particulate pollution in urban Chongqing of southwest China: Historical trends of variation, chemical characteristics and source apportionment
期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2017
Chen, Yuan
;
Xie, Shao-dong
;
Luo, Bin
;
Zhai, Chong-zhi
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
PM
Chemical composition
Source apportionment
Chongqing
POSITIVE MATRIX FACTORIZATION
AIR-POLLUTION
CARBONACEOUS AEROSOL
ELEMENTAL CARBON
SEASONAL TRENDS
TRACE-ELEMENTS
PM2.5 MASS
CITIES
EMISSIONS
EXPOSURE
Two-stage heat release in nitromethane/air flame and its impact on laminar flame speed measurement
期刊论文
COMBUSTION AND FLAME, 2017
Faghih, Mandi
;
Chen, Zheng
收藏
  |  
浏览/下载:104/0
  |  
提交时间:2017/12/03
Nitromethane/air
Two-stage heat release
Laminar flame speed
Propagating spherical flame
PROPAGATING SPHERICAL FLAMES
REACTION FRONT PROPAGATION
N-HEPTANE/AIR MIXTURE
END-GAS AUTOIGNITION
BURNING VELOCITIES
GASEOUS NITROMETHANE
IGNITION ENERGY
LOW-PRESSURE
DETONATION
COMPRESSION
Study of mechanical-magnetic and electromagnetic properties of PZT/Ni film systems by a novel bulge technique
期刊论文
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2017
Liu, Q.
;
Zhou, W.
;
Ding, J.
;
Xiao, M.
;
Yu, Z. J.
;
Xu, H.
;
Mao, W. G.
;
Pei, Y. M.
;
Li, F. X.
;
Feng, X.
;
Fang, D. N.
收藏
  |  
浏览/下载:27/0
  |  
提交时间:2017/12/03
Mechanical-electronic-magnetic
Bulge test
Delta E effect
Electromagnetic material
THIN-FILM
DEPENDENCE
MODULUS
SURFACE
INTERFEROMETRY
NICKEL
Detailed numerical simulation of swirling primary atomization using a mass conservative level set method
期刊论文
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2017
Shao, Changxiao
;
Luo, Kun
;
Yang, Yue
;
Fan, Jianren
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Primary atomization
Swirl jet
Level set method
Turbulence
Interface
LARGE-EDDY SIMULATION
JET PRIMARY BREAKUP
LIQUID-JET
VORTEX BREAKDOWN
2-PHASE FLOW
FLUID METHOD
TURBULENCE
SPRAY
MECHANISMS
MODEL
Emissions of NO and CO from counterflow combustion of CH4 under MILD and oxyfuel conditions
期刊论文
ENERGY, 2017
Cheong, Kin-Pang
;
Li, Pengfei
;
Wang, Feifei
;
Mi, Jianchun
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
MILD combustion
Oxyfuel combustion
Counterflow combustion
Nitric oxide (NO)
Carbon monoxide (CO)
NON-PREMIXED FLAMES
METHANE COMBUSTION
NITROGEN-OXIDES
PROMPT-NO
FUEL
EXTINCTION
REGIME
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