In this paper, we report on the comprehensive alcohol-/ion-responsive properties of a smart copolymer poly（N- isopropylacry]amide-co-benzo-18-crown-6-acrylamide） （P（NIPAM-co-BCAm））. The orthogonal design method ...In this paper, we report on the comprehensive alcohol-/ion-responsive properties of a smart copolymer poly（N- isopropylacry]amide-co-benzo-18-crown-6-acrylamide） （P（NIPAM-co-BCAm））. The orthogonal design method is adopted for experimental design. The experimental results show that alcohol can trigger the shrinking and Ba2t can induce the swelling of the P（NIPAM-co-BCAm） copolymer. According to the phase transition tempera- ture （LCST） change results of the copolymer, the influence of variables on the LCST changes weakens in the following order： alcohol concentration 〉 alcohol species 〉 metal ion species 〉 BCAm concentration 〉 ion concentration. The larger the alcohol concentration and the larger the molecular size of alcohols, the lower the LCST value; on the contrary, the more the BCAm content in the copolymer or the larger the BCAm/ion complex stability constant （IgK） or the larger the ion concentration is, the higher the LCST value. For a P（NIPAM-co-BCAm ） copolymer with a fixed BCAm content, a binary function of ion concentration and IgK of BCAm/ion is developed to precisely predict the LCST values of the copolymer in different metal ion solutions. The results provide valuable information for fabricating artificial biomimetic G-protein-gated inwardly rectifying potassium （GIRK） channels that are activated by alcohol and inhibited by Ba2＋.展开更多
冷热电联供(Combined Cooling, Heating and Power,CCHP)系统的经济性、节能性与系统配置和运行策略密切相关。文章在分析CCHP系统结构的基础上,根据能量流动方向建立了CCHP系统的有向图模型,并在有向图模型的基础上提出了以运行成本最...冷热电联供(Combined Cooling, Heating and Power,CCHP)系统的经济性、节能性与系统配置和运行策略密切相关。文章在分析CCHP系统结构的基础上,根据能量流动方向建立了CCHP系统的有向图模型,并在有向图模型的基础上提出了以运行成本最小化为目标函数的最优化模型,通过适当的假设将最优化模型线性化,可以通过线性规划进行求解,最后通过算例测试了模型的合理性和有效性。展开更多
基金Supported by the National Natural Science Foundation of China(21136006)the Foundation for the Author of National Excellent Doctoral Dissertation of PR China(201163)the National High Technology Research and Development Program(2012AA021403)
文摘In this paper, we report on the comprehensive alcohol-/ion-responsive properties of a smart copolymer poly（N- isopropylacry]amide-co-benzo-18-crown-6-acrylamide） （P（NIPAM-co-BCAm））. The orthogonal design method is adopted for experimental design. The experimental results show that alcohol can trigger the shrinking and Ba2t can induce the swelling of the P（NIPAM-co-BCAm） copolymer. According to the phase transition tempera- ture （LCST） change results of the copolymer, the influence of variables on the LCST changes weakens in the following order： alcohol concentration 〉 alcohol species 〉 metal ion species 〉 BCAm concentration 〉 ion concentration. The larger the alcohol concentration and the larger the molecular size of alcohols, the lower the LCST value; on the contrary, the more the BCAm content in the copolymer or the larger the BCAm/ion complex stability constant （IgK） or the larger the ion concentration is, the higher the LCST value. For a P（NIPAM-co-BCAm ） copolymer with a fixed BCAm content, a binary function of ion concentration and IgK of BCAm/ion is developed to precisely predict the LCST values of the copolymer in different metal ion solutions. The results provide valuable information for fabricating artificial biomimetic G-protein-gated inwardly rectifying potassium （GIRK） channels that are activated by alcohol and inhibited by Ba2＋.
文摘冷热电联供(Combined Cooling, Heating and Power,CCHP)系统的经济性、节能性与系统配置和运行策略密切相关。文章在分析CCHP系统结构的基础上,根据能量流动方向建立了CCHP系统的有向图模型,并在有向图模型的基础上提出了以运行成本最小化为目标函数的最优化模型,通过适当的假设将最优化模型线性化,可以通过线性规划进行求解,最后通过算例测试了模型的合理性和有效性。
