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科研机构
北京大学 [146]
内容类型
期刊论文 [137]
其他 [6]
会议论文 [3]
发表日期
2017 [11]
2016 [21]
2015 [11]
2014 [16]
2013 [13]
2012 [10]
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专题:北京大学
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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
准噶尔盆地南缘吐谷鲁群盖层评价及对下组合油气成藏的意义
期刊论文
石油与天然气地质, 2017
田孝茹
;
卓勤功
;
张健
;
胡瀚文
;
郭召杰
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2017/12/03
渗透率
排替压力
封闭性动态演化
泥岩盖层
吐谷鲁群
准噶尔盆地
permeability
displacement pressure
dynamic evolution of cap rock sealing capacity
mudstone cap rock
Tugulu Group
Junggar Basin
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
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
Spin transition of ferric iron in the calcium-ferrite type aluminous phase
期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2017
Wu, Ye
;
Qin, Fei
;
Wu, Xiang
;
Huang, Haijun
;
McCammon, Catherine A.
;
Yoshino, Takashi
;
Zhai, Shuangmeng
;
Xiao, Yuming
;
Prakapenka, Vitali B.
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2017/12/03
EQUATION-OF-STATE
SUBDUCTED BASALTIC CRUST
EARTHS LOWER MANTLE
MID-LOWER MANTLE
HIGH-PRESSURE
OCEANIC-CRUST
CHEMICAL HETEROGENEITY
SEISMIC SCATTERERS
HIGH-TEMPERATURE
STISHOVITE
Fracture detection in oil-based drilling mud using a combination of borehole image and sonic logs
期刊论文
MARINE AND PETROLEUM GEOLOGY, 2017
Lai, Jin
;
Wang, Guiwen
;
Fan, Zhuoying
;
Wang, Ziyuan
;
Chen, Jing
;
Zhou, Zhenglong
;
Wang, Shuchen
;
Xiao, Chengwen
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
Fracture
Oil-based mud
Image logs
Sonic logs
TIGHT-GAS SANDSTONES
TRIASSIC YANCHANG FORMATION
SITU STRESS DIRECTION
NORTHERN TARIM BASIN
KUQA DEPRESSION
SAUDI-ARABIA
NW CHINA
PETROPHYSICAL LOGS
DENSITY-ESTIMATION
LOW-PERMEABILITY
Bioinspired stretchable triboelectric nanogenerator as energy-harvesting skin for self-powered electronics
期刊论文
NANO ENERGY, 2017
Wang, Xiaofeng
;
Yin, Yajiang
;
Yi, Fang
;
Dai, Keren
;
Niu, Simiao
;
Han, Yingzhou
;
Zhang, Yue
;
You, Zheng
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Triboelectric nanogenerator
Stretchable
Energy-harvesting skin
Self-charging power unit
Sustainable energy
BIOMECHANICAL ENERGY
GENERATING ELECTRICITY
VIBRATION ENERGY
MOTION SENSOR
SHOE INSOLE
WALKING
PRESSURE
SYSTEM
Effects of flame propagation speed and chamber size on end-gas autoignition
期刊论文
PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2017
Yu, Hao
;
Qi, Chengken
;
Chen, Zheng
收藏
  |  
浏览/下载:105/0
  |  
提交时间:2017/12/03
Autoignition
End-gas
Flame propagation speed
Chamber size
Maximum pressure
REACTION FRONT PROPAGATION
SPARK-IGNITION ENGINE
N-HEPTANE/AIR MIXTURE
SPHERICAL FLAMES
KNOCKING COMBUSTION
HOT-SPOT
TEMPERATURE
INHOMOGENEITIES
SIMULATIONS
COMPRESSION
Modeling and simulation of the temperature and stress fields in a 3D turbine blade coated with thermal barrier coatings
期刊论文
SURFACE & COATINGS TECHNOLOGY, 2017
Zhu, W.
;
Wang, J. W.
;
Yang, L.
;
Zhou, Y. C.
;
Wei, Y. G.
;
Wu, R. T.
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
Turbine blade
Thermal barrier coatings
Conjugated heat transfer simulations
Turbulence model
Thermal stress
Fluid-solid coupling
TBC SYSTEMS
FATIGUE
DELAMINATION
TURBULENCE
CREEP
OXIDE
VANE
An Improved Perceptual MBSS Noise Reduction with an SNR-Based VAD for a Fully Operational Digital Hearing Aid
期刊论文
IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, 2017
Guo, Zhaoyang
;
Wang, Xin&apos
;
Wang, Bo
;
Yong, Shanshan
;
an
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
digital hearing aid
noise reduction
multiband spectral subtraction
voice activity detection
SPECTRAL SUBTRACTION METHOD
SPEECH ENHANCEMENT
COLORED NOISE
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