In this article, a multiobjective optimization strategy for an industrial naphtha continuous catalytic reform-ing process that aims to obtain aromatic products is proposed. The process model is based on a 20-lumped ki...In this article, a multiobjective optimization strategy for an industrial naphtha continuous catalytic reform-ing process that aims to obtain aromatic products is proposed. The process model is based on a 20-lumped kinetics re-action network and has been proved to be quite effective in terms of industrial application. The primary objectives in-clude maximization of yield of the aromatics and minimization of the yield of heavy aromatics. Four reactor inlet tem-peratures, reaction pressure, and hydrogen-to-oil molar ratio are selected as the decision variables. A genetic algorithm, which is proposed by the authors and named as the neighborhood and archived genetic algorithm (NAGA), is applied to solve this multiobjective optimization problem. The relations between each decision variable and the two objectives are also proposed and used for choosing a suitable solution from the obtained Pareto set.展开更多
[ Objective] This study aimed to optimize the conditions for purification of total flavones from litchi pericarp by macroporous absorption resin. E Method] The flavones adsorption rates and desorption rates of macropo...[ Objective] This study aimed to optimize the conditions for purification of total flavones from litchi pericarp by macroporous absorption resin. E Method] The flavones adsorption rates and desorption rates of macroporous absorption resins （AB-8, HPD-600, D101 ） were compared, and the technological parameters of D101 during the purification process were investigated. E Result] D101 macroporous absorption resin was ap- propriate for the purification of total flavonoids from litchi pericarp. The optimal technological conditions were selected .. the pH of sample solution was 5.0; concentration of sample solution was 4 mg/ml, with a volume of 2.5BV; 80% ethanol was used as elution solution, with a volume of 2.0BV. [ Condusion] The content of total flavones achieved 83% after separation by D101 macoporous absorption resin.展开更多
In the EU （European Union）, Cyprus＇s problems aren＇t new. Ten years later, the same debate is being held all over again, just from a different point of view. It is emblematic of this current financial crisis becau...In the EU （European Union）, Cyprus＇s problems aren＇t new. Ten years later, the same debate is being held all over again, just from a different point of view. It is emblematic of this current financial crisis because the banking system is much bigger than GDP （Gross Domestic Product）. Setting aside the sluggish economic performance, as well as the usual gap between northern and southern regions, people are uncomfortable with the EU. Getting the EU to finance a deficit is very tempting because it seems to be a politically and socially painless option, but can we count on the EU to devise such a smoothly running system？ Cyprus is interesting on many levels, from the debate concerning the limits of cohesion policy to the need of finding new solutions for the European periphery. It raises the question of whether a real fiscal and political union is possible, in light of the actual geoeconomic and geopolitical dynamics among the EU, Turkey, and Russia. The aim of this paper is to explore the possible mechanisms for an integration of Cyprus in order to go beyond fiscal burden sharing. It is an important starting point to paving the way to new policies and strategies for changing the objectives of economic convergence.展开更多
In this paper, through the analysis of the language characteristics and the employment of the method of measurement statistics, the utilization frequency and distributions of drama language body standard are further s...In this paper, through the analysis of the language characteristics and the employment of the method of measurement statistics, the utilization frequency and distributions of drama language body standard are further summaried. There are rhetorical question, switching, repetition, apostrophe, etc. in the drama language body standard. Furthermore, the lower utilization frequency of the drama language body standard is revealed by comparison with the literature and art style. The figures of speech in the drama language are open and unlimited. The drama language is more emphasized on the using of the figures of speech than the colloquial style.展开更多
基金Supported by the National Natural Science Foundation of China (No.60421002).
文摘In this article, a multiobjective optimization strategy for an industrial naphtha continuous catalytic reform-ing process that aims to obtain aromatic products is proposed. The process model is based on a 20-lumped kinetics re-action network and has been proved to be quite effective in terms of industrial application. The primary objectives in-clude maximization of yield of the aromatics and minimization of the yield of heavy aromatics. Four reactor inlet tem-peratures, reaction pressure, and hydrogen-to-oil molar ratio are selected as the decision variables. A genetic algorithm, which is proposed by the authors and named as the neighborhood and archived genetic algorithm (NAGA), is applied to solve this multiobjective optimization problem. The relations between each decision variable and the two objectives are also proposed and used for choosing a suitable solution from the obtained Pareto set.
基金Supported by Key Project of Science and Technology of Luzhou City(651)
文摘[ Objective] This study aimed to optimize the conditions for purification of total flavones from litchi pericarp by macroporous absorption resin. E Method] The flavones adsorption rates and desorption rates of macroporous absorption resins （AB-8, HPD-600, D101 ） were compared, and the technological parameters of D101 during the purification process were investigated. E Result] D101 macroporous absorption resin was ap- propriate for the purification of total flavonoids from litchi pericarp. The optimal technological conditions were selected .. the pH of sample solution was 5.0; concentration of sample solution was 4 mg/ml, with a volume of 2.5BV; 80% ethanol was used as elution solution, with a volume of 2.0BV. [ Condusion] The content of total flavones achieved 83% after separation by D101 macoporous absorption resin.
文摘In the EU （European Union）, Cyprus＇s problems aren＇t new. Ten years later, the same debate is being held all over again, just from a different point of view. It is emblematic of this current financial crisis because the banking system is much bigger than GDP （Gross Domestic Product）. Setting aside the sluggish economic performance, as well as the usual gap between northern and southern regions, people are uncomfortable with the EU. Getting the EU to finance a deficit is very tempting because it seems to be a politically and socially painless option, but can we count on the EU to devise such a smoothly running system？ Cyprus is interesting on many levels, from the debate concerning the limits of cohesion policy to the need of finding new solutions for the European periphery. It raises the question of whether a real fiscal and political union is possible, in light of the actual geoeconomic and geopolitical dynamics among the EU, Turkey, and Russia. The aim of this paper is to explore the possible mechanisms for an integration of Cyprus in order to go beyond fiscal burden sharing. It is an important starting point to paving the way to new policies and strategies for changing the objectives of economic convergence.
文摘In this paper, through the analysis of the language characteristics and the employment of the method of measurement statistics, the utilization frequency and distributions of drama language body standard are further summaried. There are rhetorical question, switching, repetition, apostrophe, etc. in the drama language body standard. Furthermore, the lower utilization frequency of the drama language body standard is revealed by comparison with the literature and art style. The figures of speech in the drama language are open and unlimited. The drama language is more emphasized on the using of the figures of speech than the colloquial style.
