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Featured researches published by Xuan Cao.


Journal of Ocean University of China | 2015

Monte carlo simulation of in situ gamma-spectra recorded by NaI (Tl) detector in the marine environment

Yi-Ming Wang; Yingying Zhang; Ning Wu; Bingwei Wu; Yan Liu; Xuan Cao; Qian Wang

To develop a NaI (Tl) detector for in situ radioactivity monitoring in the marine environment and enhance the confidence of the probability of the gamma-spectrum analysis, Monte Carlo simulations using the Monte Carlo N-Particle ( MNCP ) code were performed to provide the response spectra of some interested radionuclides and the background spectra originating from the natural radionuclides in seawater recorded by a NaI (Tl) detector. A newly developed 75 mm × 75 mm NaI (Tl) detector was calibrated using four reference radioactive sources 137Cs, 60Co, 40K and 54Mn in the laboratory before the field measurements in seawater. A simulation model was established for the detector immersed in seawater. The simulated spectra were all broadened with Gaussian pulses to reflect the statistical fluctuations and electrical noise in the real measurement. The simulated spectra show that the single-energy photons into the detector are mostly scattering low-energy photons and the high background in the low energy region mainly originates from the Compton effect of the high energy ?-rays of natural radionuclides in seawater. The simulated background spectrum was compared with the experimental one recorded in field measurement and they seem to be in good agreement. The simulation method and spectra can be used for the accurate analysis of the filed measurement results of low concentration radioactivity in seawater.


chinese automation congress | 2015

Hardware system design of radionuclide monitoring in seawater

Bingwei Wu; Yingying Zhang; Ning Wu; Guohua Zhang; Guangli Hou; Xuan Cao; Yan Liu

In this article, the hardware system of radionuclide monitoring and the test results are introduced. The analysis of the digital pulse signal through the pretreatment circuit, high-speed ADC and the FPGA, can obtain the signal amplitude, time, pulse shape etc, and then the marine radioactivity can be obtained. This system can be used to monitor the marine radionuclide.


Archive | 2012

Method for measuring dissolved oxygen of water body by flow-injection chemiluminiscence mode

Yan Liu; Ran Ma; Na Zhao; Shuwei Zhang; Dongzhi Chu; Bin Zhao; Xiaomei Shi; Ying Zhang; Dongyan Liu; Pingping Fan; Jing Lv; Yang Gao; Guoxing Ren; Lu Cao; Ting Zhang; Tao Zou; Hongliang Wang; Xuan Cao; Yingying Zhang; Yongzuo Tang; Yan Cheng; Guangli Hou


Archive | 2011

Chemiluminescent signal detection device

Guoxing Ren; Hongbin Zhang; Ran Ma; Yan Liu; Yan Cheng; Xuan Cao; Yang Gao; Hongliang Wang; Tonglei Cheng; Ying Zhang; Yingying Zhang; Yongzuo Tang; Xiaomei Shi; Dongyan Liu; Xi Wang; Jichang Sun; Guangli Hou


Archive | 2010

Universal intelligent type information collection operating device used for marine monitoring

Xuan Cao; Yan Cheng; Libin Du; Yang Gao; Guangli Hou; Yan Liu; Ran Ma; Guoxing Ren; Xiaomei Shi; Jichang Sun; Yongzuo Tang; Shanshan Xu; Xiaohua You; Ying Zhang; Yingying Zhang


Archive | 2012

Method and device for measuring total organic carbon in waterbody

Yan Cheng; Guoxing Ren; Hongbin Zhang; Ran Ma; Yang Gao; Yongzuo Tang; Xiaohua You; Ying Zhang; Dongyan Liu; Yingying Zhang; Hongliang Wang; Xiaomei Shi; Xuan Cao; Yan Liu; Jichang Sun; Guangli Hou


Archive | 2012

Method for measuring water sulfide concentration through flow injection chemiluminescence

Guoxing Ren; Yan Liu; Yingying Zhang; Ran Ma; Shuwei Zhang; Dongzhi Chu; Dongyan Liu; Ying Zhang; Xiaomei Shi; Tao Zou; Pingping Fan; Jing Lv; Yang Gao; Ting Zhang; Lu Cao; Hongliang Wang; Xuan Cao; Bin Zhao; Yongzuo Tang; Yan Cheng; Guangli Hou


Archive | 2012

Photonic crystal fiber sensing probe for detecting concentration of gas or liquid

Tonglei Cheng; Hongliang Wang; Ying Zhang; Yingying Zhang; Ran Ma; Guoxing Ren; Yongzuo Tang; Xuan Cao


Archive | 2012

Temperature control device for optical detecting device applied online

Li Ding; Guoxing Ren; Ran Ma; Yongzuo Tang; Yan Cheng; Dongzhi Chu; Yan Liu; Ying Zhang; Yingying Zhang; Yang Gao; Xuan Cao; Hongliang Wang; Dongyan Liu; Pingping Fan; Jing Lv; Bin Zhao; Xiaohua You; Xiaomei Shi; Xi Wang; Jichang Sun; Guangli Hou


Archive | 2011

Field monitoring equipment for ocean parameters

Yingying Zhang; Ran Ma; Ying Zhang; Yan Cheng; Yongzuo Tang; Guangli Hou; Jichang Sun; Yan Liu; Yang Gao; Xuan Cao; Hongliang Wang; Tonglei Cheng; Pingping Fan; Guoxing Ren; Qian Wang; Dongyan Liu; Xiaohua You; Xiaomei Shi

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Guoxing Ren

Ocean University of China

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Ying Zhang

Shanxi Medical University

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Yan Liu

Hong Kong Polytechnic University

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