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科研机构
北京大学 [248]
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其他 [248]
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2017 [2]
2016 [10]
2015 [13]
2014 [20]
2013 [27]
2012 [25]
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内容类型:其他
专题:北京大学
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Cautionary tales on air-quality improvement in Beijing
其他
2017-01-01
Zhang, Shuyi
;
Guo, Bin
;
Dong, Anlan
;
He, Jing
;
Xu, Ziping
;
Chen, Song Xi
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2017/12/03
air-quality assessment
meteorological confounding
observational study
spatial-temporal adjustment
CHINA
4-mode MDM Transmission over MMF with Direct Detection Enabled by Cascaded Mode-selective Couplers
其他
2017-01-01
Wu, Zhongying
;
Li, Juhao
;
Tian, Yu
;
Ge, Dawei
;
Zhu, Jinglong
;
Mo, Qi
;
Ren, Fang
;
Yu, Jinyi
;
Li, Zhengbin
;
Chen, Zhangyuan
;
He, Yongqi
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
INDEX MULTIMODE FIBERS
Current status and historical variations of phthalate ester (PAE) contamination in the sediments from a large Chinese lake (Lake Chaohu)
其他
2016-01-01
Kang, Lei
;
Wang, Qing-Mei
;
He, Qi-Shuang
;
He, Wei
;
Liu, Wen-Xiu
;
Kong, Xiang-Zhen
;
Yang, Bin
;
Yang, Chen
;
Jiang, Yu-Jiao
;
Xu, Fu-Liu
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/03
Phthalate esters
Sediment
Residual level
Temporal-spatial distribution
Composition
Lake Chaohu
PEARL RIVER DELTA
ACID-ESTERS
ORGANOCHLORINE PESTICIDES
SURFACE SEDIMENTS
DI-(2-ETHYLHEXYL) PHTHALATE
HUMAN EXPOSURE
HEALTH-RISKS
SOUTH CHINA
WATER
ECOSYSTEM
Insights into the transmission of respiratory infectious diseases through empirical human contact networks
其他
2016-01-01
Huang, Chunlin
;
Liu, Xingwu
;
Sun, Shiwei
;
Li, Shuai Cheng
;
Deng, Minghua
;
He, Guangxue
;
Zhang, Haicang
;
Wang, Chao
;
Zhou, Yang
;
Zhao, Yanlin
;
Bu, Dongbo
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2017/12/04
MODEL
WORLD
Gradual reduction of sugar in soft drinks without substitution as a strategy to reduce overweight, obesity, and type 2 diabetes: a modelling study
其他
2016-01-01
Ma, Yuan
;
He, Feng J.
;
Yin, Yunjian
;
Hashem, Kawther M.
;
MacGregor, Graham A.
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2017/12/03
WEIGHT-LOSS
ARTIFICIAL SWEETENERS
BEVERAGE
TAX
CONSUMPTION
UK
METAANALYSIS
ASSOCIATION
HEALTH
WATER
A novel WDM-MDM PON scheme utilizing self-homodyne detection for high-speed/capacity access networks
其他
2016-01-01
Chen, Yuanxiang
;
Li, Juhao
;
Zhu, Paikun
;
Wu, Zhongying
;
Zhou, Peng
;
Tian, Yu
;
Ren, Fang
;
Yu, Jinyi
;
Ge, Dawei
;
Chen, Jingbiao
;
He, Yongqi
;
Chen, Zhangyuan
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
Laser pumped He-4 magnetometer with light shift suppression
其他
2016-01-01
Lin, Zaisheng
;
Wang, He
;
Peng, Xiang
;
Wu, Teng
;
Guo, Hong
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
POLARIZATION SPECTROSCOPY
FREQUENCY-MODULATION
DISCHARGE
Dead-zone Free Multi-beam Atomic Sensor for He-4 Magnetometer
其他
2016-01-01
Gong, Wei
;
Wang, Haidong
;
Wu, Teng
;
Lin, Zaisheng
;
Li, Wenhao
;
Peng, Xiang
;
Chen, Jingbiao
;
Guo, Hong
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
atomic magnetometer
dead zone
heading error
light shift
HELIUM
LASER
Sensitivity enhancement of a dead-zone free all-optical He-4 atomic magnetometer based on a liquid-crystal polarization rotator
其他
2016-01-01
Wu, Teng
;
Peng, Xiang
;
Wu, Shuyu
;
Cao, Qinyang
;
Lin, Zaisheng
;
Wang, Haidong
;
Li, Wenhao
;
Guo, Hong
收藏
  |  
浏览/下载:12/0
  |  
提交时间:2017/12/03
atomic magnetometer
liquid crystal
polarization rotator
dead-zone effect
magnetic field measurement
Helium-4
Bidirectional Mobile Fronthaul based on Wavelength Reused MDM
其他
2016-01-01
Chen, Yuanxiang
;
Li, Juhao
;
Peng, Huanfa
;
Zhu, Paikun
;
Tian, Yu
;
Wu, Zhongying
;
Zhu, Jinglong
;
Ge, Dawei
;
Zhou, Peng
;
Liu, Ke
;
Xu, Yongchi
;
Chen, Jingbiao
;
He, Yongqi
;
Chen, Zhangyuan
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
wavelength reused
mode-division-multiplexing (MDM)
fronthaul
ACCESS NETWORKS
WDM-PON
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