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科研机构
北京大学 [44]
内容类型
期刊论文 [36]
其他 [8]
发表日期
2017 [4]
2016 [4]
2015 [1]
2014 [5]
2013 [4]
2012 [1]
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专题:北京大学
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Classification of lacustrine tight limestone considering matrix pores or fractures: A case study of Da'anzhai Member of Jurassic Ziliujing Formation in central Sichuan Basin, SW China
期刊论文
PETROLEUM EXPLORATION AND DEVELOPMENT, 2017
Tian Zepu
;
Song Xinmin
;
Wang Yongjun
;
Ran Qiquan
;
Liu Bo
;
Xu Qilu
;
Li Yang
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
tight limestone
matrix pores or fractures
rock types
physical property
oilliness
productivity features
Da&apos
Jurassic
BARNETT
WOODFORD
SHALE
anzhai Member
MMS observation of inverse energy dispersion in shock drift accelerated ions
期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2017
Lee, S. H.
;
Sibeck, D. G.
;
Hwang, K.J.
;
Wang, Y.
;
Silveira, M. V. D.
;
Chu, C.
;
Mauk, B. H.
;
Cohen, I. J.
;
Ho, G. C.
;
Mason, G. M.
;
Gold, R. E.
;
Burch, J. L.
;
Giles, B. L.
;
Torbert, R. B.
;
Russell, C. T.
;
Wei, H.
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
energetic ions
inverse energy dispersion
shock drift acceleration
shock transition
quasi-perpendicular bow shock
EARTHS BOW SHOCK
MULTI-SPACECRAFT OBSERVATIONS
UPSTREAM PRESSURE VARIATIONS
DIFFUSE IONS
E-GREATER-THAN-OR-EQUAL-TO-50 KEV
SOLAR-WIND
PARTICLE-ACCELERATION
DAYSIDE MAGNETOPAUSE
EVENTS
PROTONS
考虑基质孔缝特征的湖相致密灰岩类型划分——以四川盆地中部侏罗系自流井组大安寨段为例
期刊论文
石油勘探与开发, 2017
田泽普
;
宋新民
;
王拥军
;
冉启全
;
刘波
;
许启鲁
;
李扬
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
致密灰岩
基质孔缝
岩石类型
物性
含油性
产能特征
大安寨段
侏罗系
tight limestone
matrix pores or fractures
rock types
physical property
oilliness
productivity features
Da&
anzhai Member
Jurassic
#39
Investigation and application of photochemically induced direct UV detection of low or non-UV absorbing compounds by capillary electrophoresis
期刊论文
TALANTA, 2017
Xie, Xia
;
Chang, Fengxia
;
Li, Xin
;
Li, Meixian
;
Zhu, Zhiwei
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
Capillary electrophoresis
Photolysis
Low or non-UV absorbing compounds
Amino acid
UV detection
MICELLAR ELECTROKINETIC CHROMATOGRAPHY
AMINO-ACIDS
LIQUID-CHROMATOGRAPHY
ZONE-ELECTROPHORESIS
MASS-SPECTROMETRY
SEPARATION
DERIVATIZATION
PHOTOOXIDATION
DERIVATIVES
PHOTOLYSIS
Leaf litter decomposition in urban forests: test of the home-field advantage hypothesis
期刊论文
ANNALS OF FOREST SCIENCE, 2016
Sun, Yan
;
Zhao, Shuqing
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Decay rate coefficient
Home-field advantage (HFA)
Litter production
Mass loss
Nitrogen and phosphorus gain or loss
Urban environment
TIANJIN-HEBEI REGION
TERRESTRIAL ECOSYSTEMS
URBANIZATION GRADIENT
NUTRIENT RELEASE
TROPICAL FOREST
NATURAL FOREST
NEEDLE LITTER
CARBON
CHINA
SOIL
A method to estimate the neutral atmospheric density near the ionospheric main peak of Mars
期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2016
Zou, Hong
;
Ye, Yu Guang
;
Wang, Jin Song
;
Nielsen, Erling
;
Cui, Jun
;
Wang, Xiao Dong
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/04
The neutral densities at 130 km can be
derived fromtheMGS/RS measurements
with our method
The derived neutral densities can be
used to verify or calibrate the Martian
atmospheric model
The method can be applied to other
radio occultation measurements
such as MEX/RS measurements
RADIO OCCULTATION MEASUREMENTS
GLOBAL SURVEYOR
GRAVITY-WAVES
INTERANNUAL VARIABILITY
ELECTRON REFLECTOMETRY
SEASONAL-VARIATIONS
GRAZING-INCIDENCE
SOLAR-RADIATION
DUST STORMS
THERMOSPHERE
A novel hybrid color image encryption algorithm using two complex chaotic systems
期刊论文
OPTICS AND LASERS IN ENGINEERING, 2016
Wang, Leyuan
;
Song, Hongjun
;
Liu, Ping
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Image encryption
Complex Chen system
Complex Lorenz system
Exclusive-or operation
Chaotic ponytail
MAP
SYNCHRONIZATION
PERMUTATION
OPERATIONS
TRANSFORM
SEQUENCE
SHIFT
An improvement color image encryption algorithm based on DNA operations and real and complex chaotic systems
期刊论文
OPTIK, 2016
Li, Xiang
;
Wang, Leyuan
;
Yan, Yinfa
;
Liu, Ping
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Color image encryption
Complex hyper-chaotic Lorenz system
Deoxyribonucleic acid sequence
Exclusive or operations
The quaternary chaotic sequence
LOGISTIC MAP
CRYPTOGRAPHY
STANDARD
CODES
Adaptability of Indocalamus decorus to climate change based on physiological and biochemical responses to elevated carbon dioxide and ozone
期刊论文
IFOREST-BIOGEOSCIENCES AND FORESTRY, 2015
Guo, Ziwu
;
Zhuang, Minghao
;
Li, Yingchun
;
Chen, Shuanglin
;
Yang, Qingping
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/04
Antioxidant Enzyme
Carbon Dioxide
Indocalamus decorus
Membrane Lipid Peroxidation
Ozone
Photosynthetic Physiology
AIR CO2 ENRICHMENT
OXIDATIVE STRESS
STOMATAL CONDUCTANCE
LEAF CHLOROPHYLL
ATMOSPHERIC CO2
QUERCUS-ILEX
AND/OR O-3
PHOTOSYNTHESIS
EXPOSURE
SENSITIVITY
设计的竞赛or图纸表达的竞赛?
期刊论文
中国建筑教育, 2014
袁涛
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
建筑学专业
水彩渲染
二本
曲线形
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官方机构
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