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Cheng Tan,Jianying Di,Zhengqiang Zhang,Wing Shing Wong 제어·로봇·시스템학회 2024 International Journal of Control, Automation, and Vol.22 No.2
This paper investigates the general stabilization issues for continuous-time stochastic dynamics whose input delay and multiplicative noise in control variable exist simultaneously. On the one hand, we present a set of necessary and sufficient conditions for stabilizing the considered stochastic dynamics in mean-square sense. Different from many previous works, one significant innovation is that our control policy is designed as the feedback of an extended state that contains the current available state and some past control information. On the other hand, another important innovation is that we for the first time generalize the notions of critical stabilization and essential destabilization to stochastic time-delay model in terms of spectral analysis technique, while the related necessary and sufficient stabilization conditions are derived respectively.
Jianyou Long,Gutha Yuvaraja,Shuyi Zhou,Jianying Mo,Huosheng Li,Dinggui Luo,Di Yun Chen,Lingjun Kong,Munagapati Venkata Subbaiah,Guda Mallikarjuna Reddy 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.72 No.-
In this study, two Fusarium strains namely ZSY and MJY were successfully isolated from the contaminatedsoil of Dabaoshan smelter in Shaoguan City, and utilised as a biosorbent for the removal of Pb(II) ions fromaqueous solution. Effect of pH (6), agitation speed (150 rpm), biomass concentration (1 g/L), initial Pb(II)concentration, contact time (60 min), and effect of temperature (323 K) was investigated. Kinetic andisotherm results showed that the removal of Pb(II) ions onto ZSY and MJY werefitted well with thepseudo-second-order and Langmuir isotherm models (232.56 and 263.16 mg/g). In addition thermodynamicstudies were also discussed.