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| 1 | Signal processing in underwater acoustic communication system for manned deep submersible 'Jiaolong'显示文摘For the first time in the world,underwater acoustic transmission of images,human voice,data and texts between vehicle under 7000 m depth and surface ship was accomplished by underwater acoustic communication system of manned deep submersible 'Jiaolong'.In this paper,signal processing in underwater acoustic communication system for manned deep submersible 'Jiaolong' is introduced.(1) Four communication methods are integrated to meet different needs:1) coherent underwater acoustic communication,with a variable transmission rate from 5 kbps to 15 kbps,to transmit images.2) Non-coherent underwater acoustic communication, with a transmission rate 300 bps,to transmit texts,instructions,and sensor data. 3) Spread spectrum underwater acoustic communication,with a transmission rate 16 bps,to transmit instructions.4) Underwater voice communication,using single sideband modulation to transmit human voice.(2) Signal processing method in coherent communication mainly consists of concatenation of decision feedback equalizer and Turbo decoder,and wavelet based image compression with fixed length coding.In the equalizer,Doppler compensation,multichannel combining and equalizer coefficients updating are all using fast self-optimized adaptive algorithm.(3) A linear hydrophone array is lowered from the mother ship to certain depth, and spatial diversity combining technology is adopted.(4) Diving trials of 'Jiaolong' were carried out in Pacific Ocean.The communication range can cover nearly all ocean depth.One optical/acoustic image can be transmitted in 7 or 14 seconds. | ZHU Weiqing ZHU Min WU Yanbo YANG Bo XU Lijun FU Xiang PAN Feng | 2013 | Chinese Journal of Acoustics2013，32，1： | 7 |
| 2 | Preparation of Surface-enhanced Raman Scattering(SERS)-active Optical Fiber Sensor by Laser-induced Ag Deposition and Its Application in Bioidentification of Biotin/Avidin显示文摘 | LIU Chunyu WANG Shaoyan FU Cuicui LI Haibo XU Shuping XU Weiqing | 2015 | Chemical Research in Chinese Universities2015，31，1： | 2 |
| 3 | Empirical Likelihood Based Diagnostics for Heteroscedasticity in Semiparametric Varying-Coefficient Partially Linear Models with Missing Responses显示文摘This paper proposes an empirical likelihood based diagnostic technique for heteroscedasticity for semiparametric varying-coefficient partially linear models with missing responses. Firstly, the authors complement the missing response variables by regression method. Then, the empirical likelihood method is introduced to study the heteroscedasticity of the semiparametric varying-coefficient partially linear models with complete-case data. Finally, the authors obtain the finite sample property by numerical simulation. | LIU Feng GAO Weiqing HE Jing FU Xinwei KANG Xinmei | 2021 | Journal of Systems Science & Complexity2021，34，3： | 2 |
| 4 | The diagnosis of tool wear based on RBF neural networks and D-S evidence theory显示文摘 | Weiqing Cao Pan Fu Weilin Li | 2013 | Computer Science and Information Technology2013，，7： | 1 |
| 5 | Ochratoxin A induces abnormal tryptophan metabolism in the intestine and liver to activate AMPK signaling pathway显示文摘Background Ochratoxin A(OTA)is a mycotoxin widely present in raw food and feed materials and is mainly pro-duced by Aspergillus ochraceus and Penicillium verrucosum.Our previous study showed that OTA principally induces liver inflammation by causing intestinal flora disorder,especially Bacteroides plebeius(B.plebeius)overgrowth.However,whether OTA or B.plebeius alteration leads to abnormal tryptophan-related metabolism in the intestine and liver is largely unknown.This study aimed to elucidate the metabolic changes in the intestine and liver induced by OTA and the tryptophan-related metabolic pathway in the liver.Materials and methods A total of 30 healthy 1-day-old male Cherry Valley ducks were randomly divided into 2 groups.The control group was given 0.1 mol/L NaHCO3 solution,and the OTA group was given 235μg/kg body weight OTA for 14 consecutive days.Tryptophan metabolites were determined by intestinal chyme metabolomics and liver tryptophan-targeted metabolomics.AMPK-related signaling pathway factors were analyzed by Western blot-ting and mRNA expression.Results Metabolomic analysis of the intestinal chyme showed that OTA treatment resulted in a decrease in intesti-nal nicotinuric acid levels,the downstream product of tryptophan metabolism,which were significantly negatively correlated with B.plebeius abundance.In contrast,OTA induced a significant increase in indole-3-acetamide levels,which were positively correlated with B.plebeius abundance.Simultaneously,OTA decreased the levels of ATP,NAD+and dipeptidase in the liver.Liver tryptophan metabolomics analysis showed that OTA inhibited the kynurenine metabolic pathway and reduced the levels of kynurenine,anthranilic acid and nicotinic acid.Moreover,OTA increased the phosphorylation of AMPK protein and decreased the phosphorylation of mTOR protein.Conclusion OTA decreased the level of nicotinuric acid in the intestinal tract,which was negatively correlated with B.plebeius abundance.The abnormal metabolism of tryptophan led to a deficiency of NAD+and ATP in the liver,which in turn activated the AMPK signaling pathway.Our results provide new insights into the toxic mechanism of OTA,and tryptophan metabolism might be a target for prevention and treatment. | Weiqing Ma Yang Fu Shanshan Zhu Daiyang Xia Shuangshuang Zhai Deqin Xiao Yongwen Zhu Michel Dione Lukuyu Ben Lin Yang Wence Wang | 2023 | Journal of Animal Science and Biotechnology2023，14，6： | 0 |
| 6 | TREATMENT OF INDUSTRIAL WASTEWATER FROM AN ALUMINA PLANT BY MEMBRANE (Ⅰ) ——Measurement of Limiting Current Density of Electrodialysis显示文摘In order to design the technological process of desalination by electrodialysis for the industrial wastewater of an alumina plant, the limit current density of the industrial wastewater is measured, and the equations of limit current density, voltage drop of the unit membrane pair at the limiting current and desalination ratio at the limiting current were obtained. | Zhou Kanggen Zhang Qixiou Luo Aiping (Department of Metallurgical Science and Engineering, Central South University of Technology, Changhsha 410083, China) Fu Chunsheng Shang Jihong Li Ming Huang Weiqing ① Zhu Xiaoqing ①(Department of Tech | 1999 | Journal of Central South University1999，11，2： | 0 |
| 7 | First Beam Commissioning of SSC-Linac as an Injector of SSC显示文摘The construction of the SSC-Linac has made significant progress in 2019.The first beam commissioning of SSC-Linac as an injector of the Separated Sector Cyclotron(SSC)was performed succssfully with ^(40)Ar^(7+) beam and the particle energy of 5.98 MeV/u was obtained at the exit of SSC on December 17,2019. | Du Heng Yin Xuejun Yang Weiqing Li Zhongshan Kong Qiyu Li Xiaoni Yang Shengli Qian Cheng WangHaoning Cong Yan Jin Peng Zhang Ruifeng Han Xiaodong Fu Xin Wang Kai Jing Long Zhang Yong Li Lili Xie Wenjun Xu Xiaowei Wang Shaoming Chen Wenjun Liu Xiaojun Yue Min An Jingrui Zhang Xiang Yan Huaihai Feng Anhui Zhang Shuai Zhang Yongbo Sun Peng Zhu Tieming Sha Xiaoping Xu Jianye Sun Xiaolong Su Xuemin Li Anping Yan Tailai Meng Jun Zhang Wei Wu Junxia Yao Qinggao Yang Yaqing Xu Zhe Sun Liangting Gao Daqing Yuan Youjin Yang Jiancheng Xia Jiawen | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
| 8 | Comparative Study on Grain Cadmium Content and Yield in Different Rice Varieties显示文摘[Objectives] The rice varieties with a low cadmium (Cd) content and a high yield were screened to provide reference for further experiments on moderate and high Cd-contaminated soils and local promotion.[Methods] Under the soil condition of a Cd content of 0.58mg/kg,differences in agronomic traits such as grain Cd content,yield,number of effective panicles,number of grains per panicle and 1 000-grain weight of 26 different rice varieties such as Huanghuazhan,Y Liangyou 9918 and T You 109,were studied by pot experiment.[Results] Such six varieties as Xiangyou 109,Tianfengyou 316,C Liangyou 651,Y Liangyou 3218,Y Liangyou 9918 and T You 109 had a relatively higher yield and relatively lower Cd content,which was because that their traits including panicle length,number of effective panicles and 1 000-grain weight were superior to other varieties.The correlation analysis between plant Cd content and yield showed that there was a negative correlation between Cd content and yield in rice.[Conclusions] This study provides a theoretical basis for cultivating suitable varieties in this area. | Weiqing FU Peng DU Jing ZHOU Guiyuan MENG | 2019 | Agricultural Biotechnology2019，8，5： | 0 |
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