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科研机构
北京大学 [60]
内容类型
期刊论文 [44]
其他 [15]
会议论文 [1]
发表日期
2017 [3]
2016 [9]
2015 [4]
2014 [4]
2013 [4]
2012 [1]
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专题:北京大学
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衰减全反射傅里叶变换红外光谱技术的临床应用研究进展
期刊论文
光谱学与光谱分析, 2017
张小青
;
孙小亮
;
潘庆华
;
张元福
;
徐智
;
郭向阳
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
衰减全反射
傅里叶变换红外光谱
血清
恶性肿瘤
Attenuated total reflection
Fourier transform infrared spectroscopy
Serum
Malignancy
ATR-FTIR SPECTROSCOPY
INTRAOPERATIVE DETECTION
THYROID-CARCINOMA
OVARIAN-CANCER
SERUM SAMPLES
BLOOD-PLASMA
DIAGNOSIS
BIOFLUIDS
Development of a portable cavity-enhanced absorption spectrometer for the measurement of ambient NO3 and N2O5: experimental setup, lab characterizations, and field applications in a polluted urban environment
期刊论文
ATMOSPHERIC MEASUREMENT TECHNIQUES, 2017
Wang, Haichao
;
Chen, Jun
;
Lu, Keding
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
RING-DOWN SPECTROSCOPY
IN-SITU MEASUREMENTS
FOURIER-TRANSFORM SPECTROSCOPY
NOCTURNAL NITROGEN-OXIDES
ATMOSPHERIC TRACE GASES
TEMPERATURE-DEPENDENCE
CROSS-SECTION
NIGHTTIME CHEMISTRY
AEROSOL EXTINCTION
NEAR-ULTRAVIOLET
Phase Noise Estimation and Suppression for PDM CO-OFDM/OQAM Systems
期刊论文
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2017
Fang, Xi
;
Zhang, Fan
收藏
  |  
浏览/下载:34/0
  |  
提交时间:2017/12/03
Coherent communication
laser phase noise
optical communication
orthogonal frequency-division multiplexing/offset quadrature amplitude modulation (OFDM/OQAM)
phase noise estimation
COHERENT OPTICAL OFDM
CHANNEL ESTIMATION
SINGLE PHOTODIODE
TRANSMISSION
OFFSET
SSMF
SUPERCHANNEL
TOLERANCE
FIBER
COMPENSATION
On the weakly anisotropic nature of the time-stationary turbulence in the solar wind
其他
2016-01-01
Wang, Xin
;
Tu, Chuanyi
;
He, Jiansen
;
Marsch, Eckart
;
Wang, Linghua
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
MAGNETIC-FIELD
Phase Compensation in Digital Holography Microscopy
其他
2016-01-01
Xiang, Zhulei
;
Qu, Weijuan
;
Zhao, Shuaiyang
;
Wang, Zhaomin
;
Guan, Guixia
;
Jing, Xin
;
Liu, Zhiguo
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2017/12/03
Characteristics and deoxy-liquefaction of cellulose extracted from cotton stalk
期刊论文
FUEL, 2016
Li, Jinhua
;
Zhang, Shuai
;
Gao, Boyang
;
Yang, Aikai
;
Wang, Zonghua
;
Xia, Yanzhi
;
Liu, Haichao
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
Cellulose
Cotton stalk
Deoxy-liquefaction
Liquid oil
FAST PYROLYSIS
MAJOR COMPONENTS
PY-GC/MS
PART I
BIOMASS
LIGNIN
OIL
LIGNOCELLULOSE
PRETREATMENT
FIBERS
A fast acquisition algorithm based on FFT for BOC modulated signals
其他
2016-01-01
Zhang, Yanbin
;
Luy, Weijun
;
Yu, Dunshan
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  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Fast Computation of Wideband Beam Pattern for Designing Large-Scale 2-D Arrays
期刊论文
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 2016
Chi, Cheng
;
Li, Zhaohui
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
Array design
nonuniform fast Fourier transform (FFT)
wideband beam pattern
wideband 2-D array
FAST FOURIER-TRANSFORMS
LARGE PLANAR ARRAYS
TRANSDUCER ARRAYS
LINEAR ARRAYS
NEAR-FIELD
ALGORITHM
OPTIMIZATION
VISION
SYSTEM
LOBE
Novel DDS-Based Method to Realize OFDM Baseband Signals
其他
2016-01-01
Liu, San-jun
;
Ma, Meng
;
Zhao, Zi-jun
;
Liu, Chang
;
Jiao, Bing-li
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
OFDM
Transmitter
DDS
IFFT
TRANSFORM
Fast Broadband Beamforming Using Nonuniform Fast Fourier Transform for Underwater Real-Time 3-D Acoustical Imaging
期刊论文
IEEE JOURNAL OF OCEANIC ENGINEERING, 2016
Chi, Cheng
;
Li, Zhaohui
;
Li, Qihu
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2017/12/03
Arbitrary 2-D arrays
broadband frequency-domain beamforming
computational load evaluation
near-field imaging
nonuniform fast Fourier transform (NUFFT)
3-D acoustical imaging
PLANAR ARRAYS
APPROXIMATION
ALGORITHM
SYSTEMS
VISION
DESIGN
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