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Science China Earth Sciences 2015年第6期58卷 996-1004页

作者： guan Yue SHEN ShiFei HUANG hong Institute of Public Safety Research Department of Engineering Physics Tsinghua University

After the damage of Fukushima Daiichi Nuclear Power Plant, a great number of radioactive materials were released into the Pacific Ocean. Therefore, it is necessary to research on the temporal and spatial distribution of these radionuclides. We use Princeton Ocean Model to simulate the circulation of the coast water of Fukushima NPP and obtain the concentration of caesium-137 by solving the diffusion equations. We employ the Monte Carlo N-particle(MCNP) code to assess the external doses caused by these contaminated sea water. To improve the efficiency and effectiveness of volume source in MCNP code, we establish a transformation method between spot source and volume source, and determine an appropriate range of volume source. Finally, we calculate the absorbed doses of every organ/tissue and the effective dose of a human body.

关键词： numerical simulation POM caesium-137 MCNP absorbed dose effective dose

Hydrophilic interaction liquid chromatography with indirect ultraviolet detection for the separation and quantification of pyrrolidinium ionic liquid cations

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Chinese Chemical Letters 2015年第11期26卷 1371-1375页

作者： Chao guan hong Yu College of Chemistry and Chemical Engineering Harbin Normal University

A method of hydrophilic interaction liquid chromatography with indirect ultraviolet detection was developed to determine three pyrrolidinium ionic liquid cations, i.e. N-methyl-N-ethyl pyrrolidinium cation （[MEPy]＋）, N-methyl-N-propyl pyrrolidinium cation （[MPPy]＋） and N-methyl-N-butyl pyrrolidi- nium cation （[MBPy]＋）. Chromatographic separation was achieved on a hydrophilic column using imidazolium ionic liquids and organic solvents as the mobile phase. The effects of the background ultraviolet absorption reagents, the imidazolium ionic liquids, detection wavelength, organic solvents, column temperature and the pH value of the mobile phase on the separation and determination of pyrrolidinium cations were investigated and the retention behaviors in hydrophilic interaction chromatography were discussed. The optimized chromatographic conditions were selected. Under the optimal conditions, the detection limits （SIN = 3） for [MEPy]＋, [MPPy]＋ and [MBPy]＋ were 0.59, 0.53 and 0.46 mg/L, respectively. The method has been successfully applied to the determination of the three ionic liquids synthesized in our chemistry laboratory. This research results may improve the analytical method of ionic liauid cations.

关键词： Hydrophilic interaction liquidchromatographyIndirect ultraviolet detectionPyrrolidinium cationsIonic liquids

Position Measurement Based Slave Torque Feedback Control for Teleoperation Systems With Time-Varying Communication Delays

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IEEE/CAA Journal of Automatica Sinica 2023年第2期10卷 388-402页

作者： Xian Yang jing Yan Changchun Hua Xinping guan the Institute of Information Science and Engineering Yanshan University the Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province Qinhuangdao 066004China IEEE the Institute of Electrical Engineering Yanshan UniversityQinhuangdao 066004China the Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China

Bilateral teleoperation system is referred to as a promising technology to extend human actions and intelligence to manipulating objects *** the tracking control of teleoperation systems,velocity measurements are necessary to provide feedback ***,due to hardware technology and cost constraints,the velocity measurements are not always *** addition,the time-varying communication delay makes it challenging to achieve tracking *** paper provides a solution to the issue of real-time tracking for teleoperation systems,subjected to unavailable velocity signals and time-varying communication *** order to estimate the velocity information,immersion and invariance(I&I)technique is employed to develop an exponential stability velocity *** the proposed velocity observer,a linear relationship between position and observation state is constructed,through which the need of solving partial differential and certain integral equations can be ***,the mean value theorem is exploited to separate the observation error terms,and hence,all functions in our observer can be analytically *** the estimated velocity information,a slave-torque feedback control law is presented.A novel Lyapunov-Krasovskii functional is constructed to establish asymptotic tracking *** particular,the relationship between the controller design parameters and the allowable maximum delay values is ***,simulation and experimental results reveal that the proposed velocity observer and controller can guarantee that the observation errors and tracking error converge to zero.

关键词： Asymptotic stability bilateral teleoperation time-varying delay velocity observer

Privacy Preserving Solution for the Asynchronous Localization of Underwater Sensor Networks

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IEEE/CAA Journal of Automatica Sinica 2020年第6期7卷 1511-1527页

作者： Haiyan Zhao jing Yan Xiaoyuan Luo Xinping guan Institute of Electrical Engineering Yanshan UniversityQinhuangdao 066004China IEEE Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China

Location estimation of underwater sensor networks(USNs)has become a critical technology,due to its fundamental role in the sensing,communication and control of ocean ***,the asynchronous clock,security attack and mobility characteristics of underwater environment make localization much more challenging as compared with terrestrial sensor *** paper is concerned with a privacy-preserving asynchronous localization issue for ***,a hybrid network architecture that includes surface buoys,anchor nodes,active sensor nodes and ordinary sensor nodes is ***,an asynchronous localization protocol is provided,through which two privacy-preserving localization algorithms are designed to estimate the locations of active and ordinary sensor *** is worth mentioning that,the proposed localization algorithms reveal disguised positions to the network,while they do not adopt any homomorphic encryption *** importantly,they can eliminate the effect of asynchronous clock,i.e.,clock skew and *** performance analyses for the privacy-preserving asynchronous localization algorithms are also ***,simulation and experiment results reveal that the proposed localization approach can avoid the leakage of position information,while the location accuracy can be significantly enhanced as compared with the other works.

关键词： Asynchronous clock localization privacy preservation underwater sensor networks(USNs)

A capture probability analytic model for the electromagnetic launched anti-torpedo torpedo

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Defence Technology（防务技术） 2022年第2期18卷 261-270页

作者： Bao-qi Wu Xiao-cun guan Shao-hua guan jing-bin Shi National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of EngineeringWuhan430033China Jiangsu Automation Research Institute Lianyungang 222006China

With the unique characteristics,electromagnetic launch technology is applicable to launch shipborne anti-torpedo torpedo(ATT).This paper aims to establish an analytic model to pre-evaluate the capture probability of the electromagnetic launched *** mathematics model of the multi-stage coilgun and the trajectory of the ATT is established for *** influence factors of the capture probability are analyzed respectively,including the entry point dispersion of the ATT and the position dispersion of the incoming *** the advanced angle interception mode,the ATT search model is obtained according to the positional relationship,and the course error is synthetically calculated according to the differentiation of implicit function.A geometric method to calculate the integral boundaries of the probability density function is proposed,based on the relative motion of the ATT and the incoming *** verify the proposed integral model,the digital simulation and comparison is *** results reveal that the variation trends and the calculation value of the proposed analytic model are coincident with the statistic results from Monte Carlo *** implications of the results regarding the analytic model are discussed.

关键词： Electromagnetic launch Anti-torpedo torpedo Analytic model Dispersion variance Integral boundary

Nonconforming Finite Element Methods for the Constrained Optimal Control Problems Governed by Nonsmooth Elliptic Equations

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Acta Mathematicae Applicatae Sinica 2020年第2期36卷 471-481页

作者： hong-bo guan Dong-yang SHI College of Mathematics and Information Sciences Zhengzhou University of Light IndustryZhengzhou 450002China School of Mathematics and Statistics Zhengzhou UniversityZhengzhou 450001China

In this paper,nonconforming finite element methods(FEMs)are proposed for the constrained optimal control problems(OCPs)governed by the nonsmooth elliptic equations,in which the popular EQr1 ot element is employed to approximate the state and adjoint state,and the piecewise constant element is used to approximate the ***,the convergence and superconvergence properties for the nonsmooth elliptic equation are obtained by introducing an auxiliary ***,the goal-oriented error estimates are obtained for the objective function through establishing the negative norm error ***,the methods are extended to some other well-known nonconforming elements.

关键词： nonconforming finite element supercloseness and superconvergence optimal control problems nonsmooth elliptic equations goal-oriented error estimate

High temperature thermo-photocatalysis driven carbon removal in direct biogas fueled solid oxide fuel cells

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Chinese Chemical Letters 2021年第11期32卷 3548-3552页

作者： Doudou Gu guan Zhang jing Zou Institute of Hydrogen and Fuel Cell Harbin Institute of TechnologyShenzhenShenzhen 518055China General Education Division School of Humanities Social ScienceThe Chinese University of Hong KongShenzhenShenzhen 518172China School of Civil and Environmental Engineering Harbin Institute of TechnologyShenzhenShenzhen 518055China

Solid oxide fuel cells(SOFCs)can directly convert renewable biogas into electricity with high efficiency at high temperature,however the long-term stability of SOFCs is significantly affected by the carbon deposition on the anode during cell ***,we report a novel carbon removal approach by high temperature infrared light driven photocatalytic *** the comparison of electrochemical performance of Ni-YSZ anode and TiO_(2)modified Ni-YSZ anode in the state-of-the-art single cell(Ni-YSZ/YSZ/LSCM),the modified anodes exhibit markedly improved peak powder density with simulated biogas fuel(70%CH_(4)+30%CO_(2))at 850℃with less coking after 40 h *** high activity and carbon deposition resistance of the modified anode is possibly attributed to the in situ generated hydroxyl radical from the reduced TiO_(x)powder under high temperature infrared light excitation,which is supported by detailed analysis of microstructural information of anodes and the powder-based thermo-photocatalytic experiments.

关键词： Thermo-photocatalysis Infrared light excitation Carbon removal Biogas utilization Solid oxide fuel cells

STUDY OF INORG-HYDROPHILIC FILMS ON ALUMINUM FOILS

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中国有色金属学会会刊：英文版 1997年第2期7卷 55-60页

作者： guan, Luxiong Huang, Kelong Bai, Yihui jing, Xiangjun Central South Univ of Technology Changsha China

ＳＴＵＤＹＯＦＩＮＯＲＧＨＹＤＲＯＰＨＩＬＩＣＦＩＬＭＳＯＮＡＬＵＭＩＮＵＭＦＯＩＬＳ①ＧｕａｎＬｕｘｉｏｎｇ，ＨｕａｎｇＫｅｌｏｎｇ，ＢａｉＹｉｈｕｉ，ＪｉｎｇＸｉａｎｇｊｕｎＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓ... 详细信息

ＳＴＵＤＹＯＦＩＮＯＲＧＨＹＤＲＯＰＨＩＬＩＣＦＩＬＭＳＯＮＡＬＵＭＩＮＵＭＦＯＩＬＳ①ＧｕａｎＬｕｘｉｏｎｇ，ＨｕａｎｇＫｅｌｏｎｇ，ＢａｉＹｉｈｕｉ，ＪｉｎｇＸｉａｎｇｊｕｎＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＣｅｎｔｒａｌＳｏｕｔｈＵ...

关键词： hydrophilicity corrosion resistance aluminum heat scattering sheet

Ru(III) catalyzed permanganate oxidation of aniline at environmentally relevant pH

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Journal of Environmental Sciences 2014年第7期26卷 1395-1402页

作者： jing Zhang Ying Zhang Hui Wang Xiaohong guan State Key Lab of Urban Water Resource and Environment Harbin Institute of Technology Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of Education College of Environment Hohai University CSCEC AECOM Consultants Co. Ltd. Waters Co. State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University

Ru（Ⅲ） was employed as catalyst for aniline oxidation by permanganate at environmentally relevant pH for the first time. Ru（Ⅲ） could significantly improve the oxidation rate of aniline by 5-24 times with its concentration increasing from 2.5 to 15 μmol/L. The reaction of Ru（Ⅲ） catalyzed permanganate oxidation of aniline was first-order with respect to aniline, permanganate and Ru（Ⅲ）, respectively. Thus the oxidation kinetics can be described by a third-order rate law. Aniline degradation by Ru（Ⅲ） catalyzed permanganate oxidation was markedly influenced by pH, and the second-order rate constant （ktapp） decreased from 643.20 to 2.67 （mol/L）^-1 sec^-1 with increasing pH from 4.0 to 9.0, which was possibly due to the decrease of permanganate oxidation potential with increasing pH. In both the uncatalytic and catalytic permanganate oxidation, six byproducts of aniline were identified in UPLC-MS/MS analysis. Ru（Ⅲ）, as an electron shuttle, was oxidized by permanganate to Ru（Ⅵ） and Ru（Ⅶ）, which acted the co-oxidants for decomposition of aniline. Although Ru（Ⅲ） could catalyze permanganate oxidation of aniline effectively, dosing homogeneous Ru（Ⅲ） into water would lead to a second pollution. Therefore, efforts would be made to investigate the catalytic performance of supported Ru（Ⅲ） toward permanganate oxidation in our future study.

关键词： RutheniumCatalysisAnilineByproductElectron shuttle

Review on synergistic damage effect of irradiation and corrosion on reactor structural alloys

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Nuclear Science and Techniques 2024年第3期35卷 109-141页

作者： Hui Liu guan-hong Lei He-Fei Huang Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

The synergistic damage effect of irradiation and corrosion of reactor structural materials has been a prominent research *** paper provides a comprehensive review of the synergistic effects on the third-and fourth-generation fission nuclear energy structural materials used in pressurized water reactors and molten salt *** competitive mechanisms of multiple influencing factors,such as the irradiation dose,corrosion type,and environmental temperature,are summarized in this *** approaches are proposed to alleviate the synergistic damage caused by irradiation and corrosion,thereby promoting in-depth research in the future and solving this key challenge for the structural materials used in reactors.

关键词： Irradiation and corrosion Synergistic effect Austenitic stainless steels Nickel-based alloys Reactors