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Electroplating titanium film on 316L stainless steel in LiCl–KCl–Ti^x+(2

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Nuclear Science and Techniques 2020年第5期31卷 18-26页

作者： Jun-Xia liu Jing-chun liu De-Wu Long Ke Zhan School of Material Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China Department of Molten Salt Chemistry and Engineering Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Interfacial Physics and Technology Chinese Academy of SciencesShanghai 201800China

To improve the anti-corrosion properties of 316 L stainless steel,titanium(Ti)metal films were electroplated on it using Li Cl–KCl molten salts as the electrolyte,and low-valence Tix+(2g K2TiF6,and Ti metal(sponge Ti)in the ***-corrosion test has shown significant enhancement in the stability of the Ti-coated 316 L due to the presence of Ti ***,the anti-corrosion properties did not enhance with an increase in the thickness of the Ti layers owing to a possible defect in the thicker Ti layers.

关键词： Molten salts Electro-plating Ti coating Anti-corrosion

Effects of Electron Donor and Different Solvents on Polarizability and Second Hyperpolarizability of Diradical Complex Involving X(X=B,Al,ga)

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Chemical Research in Chinese Universities 2012年第2期28卷 308-312页

作者： liu Hai-bo QIU Yong-qing YANg guo-chun liu chun-guang SUN Shi-ling Institute of Functional Material Chemistry Faculty of ChemistryNortheast Normal UniversityChangchun 130024P.R.China

The polarizability（α） and second hyperpolarizability（γ） were systemically investigated for singlet diradical complex involving X（X=B,Al,ga） *** results show that both the α and γ can be effectively tuned by varying the distance R（between compound A and a water molecule） and acceptor atom *** lone pair of electrons from the O atom of the water molecule entered into the vacant p orbital of atom X,which increased the diradical character and led to the increase of the α and γ ***,the polarizable continuum model（PCM） was used to test the effects of H2O and CCl4 solvents on the α and γ *** the α and γ values of the studied diradical complex 1a（1b,1c） in H2O and CCl4 were uniformly *** the solvent effects of H2O on either α or γ were larger than those of CCl4.

关键词： Polarizability Second hyperpolarizability Diradical character Polarizable continuum model(PCM)

Environmental effect of vegetation restoration on degraded ecosystem in low subtropical China

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Journal of Environmental Sciences 2003年第4期15卷 514-519页

作者： PENg Shao-lin YANg liu-chun LU Hong-fang South China Institute of Botany Chinese Academy of SciencesGuangzhou 510650China.

The environmental effect of degraded ecosystem's vegetation restoration in low subtropical China was studied. Results indicated that the vegetation recovery on degraded lands significantly ameliorates surrounding environment, increases species diversity, improves soil structure, raises soil fertility, enhances productivity, and promotes regional agricultural production and social economic development dramatically. Through the combining engineering and biological measures, the restoration of degraded ecosystem in low subtropical area is possible and economical. The restoration experience in Xiaoliang, Wuhua and other sites are valuable for other degraded subtropical area was introduced.

关键词： vegetation restoration degraded ecosystem low subtropical zone environment impact

Differential Evolution Hemivariational Inequalities with Anti-periodic Conditions

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Acta Mathematica Sinica,English Series 2024年第4期40卷 1143-1160页

作者： Jing ZHAO chun Mei gAN Zhen Hai liu School of Mathematics and Quantitative Economics Guangxi University of Finance and EconomicsNanning 530003P.R.China guangxi Colleges and Universities Key Laboratory of Optimization Control and Engineering Calculation Guangxi Minzu UniversityNanning 530006P.R.China

The goal of this paper is to deal with a new dynamic system called a differential evolution hemivariational inequality(DEHVI)which couples an abstract parabolic evolution hemivariational inequality and a nonlinear differential equation in a Banach ***,by apply ing surjectivity result for pseudomonotone multivalued mappins and the properties of Clarke's subgradient,we show the nonempty of the solution set for the parabolic hemivariational ***,some topological properties of the solution set are established such as boundedness,closedness and ***,we explore the upper semicontinuity of the solution ***,we prove the solution set of the system(DEHVI)is nonempty and the set of all trajectories of(DEHVI)is weakly compact in C(I,X).

关键词： Differential parabolic hemivariational inequality Clarke subdifferential hyperbolicparabolic system parabolic-parabolic system existence result

Effects of different drying methods on quality,bacterial viability and storage stability of probiotic enriched apple snacks

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Journal of Integrative Agriculture 2018年第1期17卷 247-255页

作者： CUI Li NIU Li-ying LI Da-jing liu chun-quan liu Ying-ping liu chun-ju SONg Jiang-fe.g Institute of Farm Product Processing Jiangsu Academy of Agricultural Sciences College of Food Science and Engineering Yangzhou University

Effects of four different drying methods on the colour, texture, sensory quality, microstructure, bacterial viability and storage stability of probiotic-enriched apple snacks were assessed. The drying methods were air drying （AD）, freeze drying （FD）, freeze drying followed by microwave vacuum drying （FD＋MVD） and air drying followed by explosion puffing drying （AD＋EPD）. Overall, FD＋MVD can be used as a suitable drying method for the development of probiotic enriched apple snacks in consideration of colour, texture, sensory quality, bacterial viability and storage stability. Probiotic bacteria in FD＋MVD-dried samples remained above 1×106 CFU g 1 for 120 days at 25℃C. Interestingly, bacterial viability in FD＋MVD-dried samples turned out to be significantly higher than FD-dried samples during storage for 120 days.

关键词： drying apple snacks probiotic viability microwave vacuum

Enhanced atrazine removal using membrane bioreactor bioaugmented with genetically engineered microorganism

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Frontiers of Environmental Science & Engineering 2008年第4期2卷 452-460页

作者： chun liu Xia HUANg State Key Joint Laboratory of Environmental Simulation and Pollution Control Department of Environmental Science and EngineeringTsinghua UniversityBeijing 100084China School of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050018China

Bioaugmentation with genetically engineered microorganisms(gEMs)in a membrane bioreactor(MBR)for enhanced removal of recalcitrant pollutants was *** atrazine-degrading genetically engineered microorganism(gEM)with green fluorescent protein was inoculated into an MBR and the effects of such a bioaugmentation strategy on atrazine removal were *** results show that atrazine removal was improved greatly in the bioaugmented MBR compared with a control *** a start-up period of 6 days,average 94.7%of atrazine was removed in bioaugmentedMBRwhen atrazine concentration of influent was 14.5 mg/*** volumetric removal rates increased linearly followed by atrazine loading increase and the maximum was 65.5 mg/(L?d).No negative effects were found on COD removal although carbon oxidation activity of bioaugmented sludge was lower than that of common *** inoculation,adsorption to sludge flocs was favorable for gEM *** gEM population size initially decreased shortly and then was kept constant at about 104–105 CFU/*** of micro-organisms played an important role in the decay of the gEM *** leakage from MBR was less than 102 CFU/mL initially and was then *** contrast,in a conventionally activated sludge bioreactor(CAS),sludge bulking occurred possibly due to atrazine exposure,resulting in bioaugmentation failure and serious gEM *** MBR was superior to CAS in atrazine bioaugmentation treatment using gEM.

关键词： genetically-engineered microorganism(gEM) membrane bioreactor(MBR) atrazine

A Novel genetic Algorithm for global Optimization

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Acta Mathematicae Applicatae Sinica 2020年第2期36卷 482-491页

作者： chun-fe.g WANg Kui liu Pei-ping SHEN College of Mathematics and Information.Henan Normal University Xinxiang 453007China Henan Engineering Laboratory for Big Data Statistical Analysis and Optimal Control School of Mathematics and Information SciencesHenan Normal UniversityXinxiang 453007 China

This paper presents a novel genetic algorithm for globally solving un-constraint optimization *** this algorithm,a new real coded crossover operator is proposed ***,for improving the convergence speed and the searching ability of our algorithm,the good point set theory rather than random selection is used to generate the initial population,and the chaotic search operator is adopted in the best solution of the current *** experimental results tested on numerical benchmark functions show that this algorithm has excellent solution quality and convergence characteristics,and performs better than some algorithms.

关键词： genetic algorithm good point set chaotic search continuous optimization

Uniform surface polished method of complex holes in abrasive flow machining

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中国有色金属学会会刊：英文版 2009年第B09期19卷 250-257页

作者： Lung TSAI Kuo-Zoo L IANg chun-Ho liu Department of Mechanical Engineering Ching Yun University

Abrasive flow machining(AFM) is an effective method that can remove the recasting layer produced by wire electrical discharge machining(WEDM). However, the surface roughness will not be easily uniform when a complex hole is polished by this method. CFD numerical method is aided to design good passageways to find the smooth roughness on the complex hole in AFM. Through the present method, it reveals that the shear forces in the polishing process and the flow properties of the medium in AFM play the roles in controlling the roughness on the entire surface. A power law model was firstly set up by utilizing the effect of shear rates on the medium viscosities, and the coefficients of the power law would be found by solving the algebraic equation from the relations between the shear rates and viscosities. Then the velocities, strain rates and shear forces of the medium acting on the surface would be obtained in the constant pressure by CFD software. Finally, the optimal mold core put into the complex hole could be designed after these simulations. The results show that the shear forces and strain rates change sharply on the entire surface if no mold core is inserted into the complex hole, whereas they hardly make any difference when the core shape is similar to the complex hole. Three experimental types of mold core were used. The results demonstrate that the similar shape of the mold core inserted into the hole could find the uniform roughness on the surface.

关键词：表面抛光磨料流加工表面粗糙度原子力显微镜计算机辅助设计 CFD软件介质粘度电火花加工

Distributed Fault-Tolerant Consensus Tracking of Multi-Agent Systems Under Cyber-Attacks

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IEEE/CAA Journal of Automatica Sinica 2022年第6期9卷 1037-1048页

作者： chun liu Bin Jiang Xiaofan Wang Huiliao Yang Shaorong Xie School of Mechatronic Engineering and Automation Shanghai UniversityShanghai 200444 School of Artificial Intelligence Shanghai UniversityShanghai 200444China IEEE College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China College of Energy and Electrical Engineering Hohai UniversityNanjing 210016China School of Computer Engineering and Science Shanghai UniversityShanghai 200444China

This paper investigates the distributed fault-tolerant consensus tracking problem of nonlinear multi-agent systems with general incipient and abrupt time-varying actuator faults under ***,a decentralized unknown input observer is established to estimate relative states and actuator ***,the estimated and output neighboring information is combined with distributed fault-tolerant consensus tracking *** of reaching leader-following exponential consensus tracking of multi-agent systems under both connectivity-maintained and connectivity-mixed attacks are derived with average dwelling time,attack frequency,and attack activation rate technique,*** example verifies the effectiveness of the fault-tolerant consensus tracking algorithm.

关键词： Cyberattacks fault-tolerant consensus tracking incipient and abrupt actuator faults nonlinear multi-agent systems unknown input observer