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科研机构
北京大学 [153]
内容类型
期刊论文 [104]
其他 [46]
会议论文 [3]
发表日期
2017 [5]
2016 [14]
2015 [14]
2014 [14]
2013 [15]
2012 [11]
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专题:北京大学
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Petrogenesis and mineralization of REE-rich granites in Qingxi and Guanxi, Nanling region, South China
期刊论文
ORE GEOLOGY REVIEWS, 2017
He, Chen
;
Xu, Cheng
;
Zhao, Zheng
;
Kynicky, Jindrich
;
Song, Wenlei
;
Wang, Lize
收藏
  |  
浏览/下载:11/0
  |  
提交时间:2017/12/03
Granite
Petrogenesis
REE mineralization
Basement rocks
South China
A-TYPE GRANITES
SE CHINA
GEOCHEMICAL CHARACTERISTICS
PALEOMAGNETIC CONSTRAINTS
SOUTHEASTERN AUSTRALIA
TECTONIC SIGNIFICANCE
ISOTOPIC EVIDENCE
JIANGXI PROVINCE
STRANGE LAKE
ORIGIN
Taxonomic status and phylogenetic position of Phaeostigma in the subtribe Artemisiinae (Asteraceae)
期刊论文
JOURNAL OF SYSTEMATICS AND EVOLUTION, 2017
Huang, Yuan
;
An, Yi-Ming
;
Meng, Shi-Yong
;
Guo, Yan-Ping
;
Rao, Guang-Yuan
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Ajania
Asteraceae
circumscription
diversification
Phaeostigma
phylogeny
MOLECULAR PHYLOGENY
GENERA ASTERACEAE
ANTHEMIDEAE
SEQUENCES
Developing a Logarithmic Chinese Reading Acuity Chart
期刊论文
OPTOMETRY AND VISION SCIENCE, 2017
Han, Qi-Ming
;
Cong, Lin-Juan
;
Yu, Cong
;
Liu, Lei
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
C-READ
reading acuity chart
simplified Chinese
LOW-VISION
PERFORMANCE
SPEED
VALIDATION
PSYCHOPHYSICS
RELIABILITY
PREDICTORS
SENTENCES
VERSION
TEXTS
Mosaic evolution in an asymmetrically feathered troodontid dinosaur with transitional features
期刊论文
NATURE COMMUNICATIONS, 2017
Xu, Xing
;
Currie, Philip
;
Pittman, Michael
;
Xing, Lida
;
Meng, Qingjin
;
Lu, Junchang
;
Hu, Dongyu
;
Yu, Congyu
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2017/12/03
THEROPOD DINOSAUR
YIXIAN FORMATION
CHINA
BIRDS
ARCHAEOPTERYX
FLIGHT
ORIGIN
WINGS
MICRORAPTOR
ARCHOSAURS
汉字动态生成的结构与风格模型
期刊论文
北京大学学报 自然科学版, 2017
栗青生
;
徐强
;
肖建国
;
刘泉
;
张解放
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
汉字
笔画
字形描述
字形生成
向量图
Chinese characters
Chinese characters strokes
font description
font generation
vector graph
The virtues of small grain size: Potential pathways to a distinguishing feature of Asian wheats
期刊论文
Nagoya International Quaternary Science Meeting, 2016
Liu, Xinyi
;
Lister, Diane L.
;
Zhao, Zhijun
;
Staff, Richard A.
;
Jones, Penelope J.
;
Zhou, Liping
;
Pokharia, Anil K.
;
Petrie, Cameron A.
;
Pathak, Anubha
;
Lu, Hongliang
;
Matuzeviciute, Giedre Motuzaite
;
Bates, Jennifer
;
Pilgram, Thomas K.
;
Jones, Martin K.
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Wheat
Grain size
Domestication
Radiocarbon dating
TRITICUM-AESTIVUM L.
2ND MILLENNIUM BC
BRONZE-AGE
FOOD GLOBALIZATION
GANGA PLAIN
SOUTH-ASIA
AGRICULTURE
CHINA
ORIGIN
SITE
The virtues of small grain size: Potential pathways to a distinguishing feature of Asian wheats
其他
2016-01-01
Liu, Xinyi
;
Lister, Diane L.
;
Zhao, Zhijun
;
Staff, Richard A.
;
Jones, Penelope J.
;
Zhou, Liping
;
Pokharia, Anil K.
;
Petrie, Cameron A.
;
Pathak, Anubha
;
Lu, Hongliang
;
Matuzeviciute, Giedre Motuzaite
;
Bates, Jennifer
;
Pilgram, Thomas K.
;
Jones, Martin K.
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
Wheat
Grain size
Domestication
Radiocarbon dating
TRITICUM-AESTIVUM L.
2ND MILLENNIUM BC
BRONZE-AGE
FOOD GLOBALIZATION
GANGA PLAIN
SOUTH-ASIA
AGRICULTURE
CHINA
ORIGIN
SITE
An 850-820 Ma LIP dismembered during breakup of the Rodinia supercontinent and destroyed by Early Paleozoic continental subduction in the northern Tibetan Plateau, NW China
期刊论文
PRECAMBRIAN RESEARCH, 2016
Xu, Xin
;
Song, Shuguang
;
Allen, Mark B.
;
Ernst, Richard E.
;
Niu, Yaoling
;
Su, Li
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/04
North Qaidam LIP
Dolerite dike and basalt
Eclogite
Mantle plume
Breakup of Rodinia
Continental subduction
LARGE IGNEOUS PROVINCES
PB ZIRCON GEOCHRONOLOGY
BIMODAL VOLCANIC-ROCKS
UHP METAMORPHIC BELT
U-PB
SOUTH CHINA
FLOOD BASALTS
OCEANIC-CRUST
YANGTZE BLOCK
NORTHWESTERN CHINA
Xenoliths in ultrapotassic volcanic rocks in the Lhasa block: direct evidence for crust-mantle mixing and metamorphism in the deep crust
期刊论文
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 2016
Wang, Rui
;
Collins, William J.
;
Weinberg, Roberto F.
;
Li, Jin-xiang
;
Li, Qiu-yun
;
He, Wen-yan
;
Richards, Jeremy P.
;
Hou, Zengqian
;
Zhou, Li-min
;
Stern, Richard A.
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/04
Xenolith
Crust-mantle hybridization
Tibetan crust
Garnet
Zircon
O-Hf isotope
PORPHYRY CU-MO
HIMALAYAN-TIBETAN OROGEN
EASTERN GANGDESE BELT
U-PB GEOCHRONOLOGY
SOUTHERN TIBET
CONTINENTAL SUBDUCTION
ISOTOPIC CONSTRAINTS
TECTONIC EVOLUTION
IGNEOUS ROCKS
SW TIBET
支链化甜菜碱和阳离子表面活性剂在聚甲基丙烯酸甲酯表面的吸附及其润湿性质
期刊论文
物理化学学报, 2016
吴伟
;
刘丹丹
;
徐志成
;
宫清涛
;
黄建滨
;
张磊
;
张路
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
支链化
甜菜碱
阳离子表面活性剂
聚甲基丙烯酸甲酯
接触角
吸附
Branch-chain
Betaine
Cationic surfactant
Poly(methyl methacrylate)
Contact angle
Adsorption
POLY(TETRAFLUOROETHYLENE) SURFACE
ZWITTERIONIC SURFACTANTS
ALCOHOL MIXTURES
AQUEOUS-SOLUTION
QUARTZ SURFACE
POLYTETRAFLUOROETHYLENE
INTERFACES
BEHAVIOR
SOLIDS
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