Electrodialytic （ED） recovery of citric acid （CA） in the presence/absence of strong electrolytes （NaCl, CaCl2 and Feel3） was separately analyzed under different process conditions. Recovery effectiveness was qua...Electrodialytic （ED） recovery of citric acid （CA） in the presence/absence of strong electrolytes （NaCl, CaCl2 and Feel3） was separately analyzed under different process conditions. Recovery effectiveness was quantitatively estimated from current efficiency values. Efficiency attained optimum value with both flow rate and potential applied, while a monotonic rise was noted with temperature which got lowered beyond 0.1 tool. L 1 feed concentration. 40% drop in efficiency was recorded in the presence of strong electrolytes （Noel, CaCl2 and Feel3） in feed relative to their presence in concentrate. Severe transport hindrance and efficiency loss were attributed to adsorption and allied physicochemical changes occurred with anion/cation exchange membranes （AEM/CEM） and these were confirmed through contact angle/Chronopotentiometry/AFM/EDX. Sluggish potential rise （Galvanostatic mode） in Chronopotentiometric analysis indicated diffusion limiting transport of organic acids influenced AEM resistance. XRD and EDX analysis indicated the presence of salt hydrates/ions （Ca2＋/Fe3＋） over CEM justifying the resistance buildup due to adsorption of multivalent metal ion（s） and salts.展开更多
For development of passenger electrical transport, it is necessary to use energy more rationally. One of methods of vehicle power efficiency increase is installation of on-board energy storage systems. For studying of...For development of passenger electrical transport, it is necessary to use energy more rationally. One of methods of vehicle power efficiency increase is installation of on-board energy storage systems. For studying of system operation, it is necessary to carry out a lot of experiments, therefore it is favorable to use the test bench and its computer model for reduction of the number of physical experiments. In this article, the results of computer modeling for the optimization of traction drive test bench by adjusting of the operation parameters of supercapacitor energy storage are described. Test bench operation is considered in cases of the energy storage system working at various selected supercapacitor initial voltages. Maximal increase of possibility of vehicle test bench regenerative braking with minimal decrease of autonomous power supply mode possibility is investigated. There is estimated the energy storage system efficiency improving measures dependence from supercapacitor operational voltage ranges. Parameters at which the minimum losses of energy are observed are revealed. Dependence of energy storage system discharge power on the most admissible supercapacitor current is established.展开更多
Purpose: To study the time-effect relationship of action of acupuncture on the satiety center of ventromedial nucleus of hypothalamus (VMH) in rats with experimental obesity. Methods: Microelectrode recording method o...Purpose: To study the time-effect relationship of action of acupuncture on the satiety center of ventromedial nucleus of hypothalamus (VMH) in rats with experimental obesity. Methods: Microelectrode recording method of nerve cells and stereotaxic technique for brain were adopted with discharge frequency (Hz/s) of nerve impulse in VMH as the index, and the time-effect of acupuncture action in different periods between groups were observed. Results: Electric activity in acupuncture group was higher than that in the obesity model group (P<0.001) and the normal group (P<0.01) respectively, and the curve of acupuncture action within 2 hours showed irregular fluctuation. Conclusion: Acupuncture can increase excitability of the satiety center, with a better long-term effect.展开更多
基金Financial support to execute the experimental work is gratefully acknowledged to IIT Roorkee(No.IITR/SRIC/244/FIG-Sch-A)UAY Project(ICSR/UAY/2016/SN dt 04/01/2017),India
文摘Electrodialytic （ED） recovery of citric acid （CA） in the presence/absence of strong electrolytes （NaCl, CaCl2 and Feel3） was separately analyzed under different process conditions. Recovery effectiveness was quantitatively estimated from current efficiency values. Efficiency attained optimum value with both flow rate and potential applied, while a monotonic rise was noted with temperature which got lowered beyond 0.1 tool. L 1 feed concentration. 40% drop in efficiency was recorded in the presence of strong electrolytes （Noel, CaCl2 and Feel3） in feed relative to their presence in concentrate. Severe transport hindrance and efficiency loss were attributed to adsorption and allied physicochemical changes occurred with anion/cation exchange membranes （AEM/CEM） and these were confirmed through contact angle/Chronopotentiometry/AFM/EDX. Sluggish potential rise （Galvanostatic mode） in Chronopotentiometric analysis indicated diffusion limiting transport of organic acids influenced AEM resistance. XRD and EDX analysis indicated the presence of salt hydrates/ions （Ca2＋/Fe3＋） over CEM justifying the resistance buildup due to adsorption of multivalent metal ion（s） and salts.
文摘For development of passenger electrical transport, it is necessary to use energy more rationally. One of methods of vehicle power efficiency increase is installation of on-board energy storage systems. For studying of system operation, it is necessary to carry out a lot of experiments, therefore it is favorable to use the test bench and its computer model for reduction of the number of physical experiments. In this article, the results of computer modeling for the optimization of traction drive test bench by adjusting of the operation parameters of supercapacitor energy storage are described. Test bench operation is considered in cases of the energy storage system working at various selected supercapacitor initial voltages. Maximal increase of possibility of vehicle test bench regenerative braking with minimal decrease of autonomous power supply mode possibility is investigated. There is estimated the energy storage system efficiency improving measures dependence from supercapacitor operational voltage ranges. Parameters at which the minimum losses of energy are observed are revealed. Dependence of energy storage system discharge power on the most admissible supercapacitor current is established.
文摘Purpose: To study the time-effect relationship of action of acupuncture on the satiety center of ventromedial nucleus of hypothalamus (VMH) in rats with experimental obesity. Methods: Microelectrode recording method of nerve cells and stereotaxic technique for brain were adopted with discharge frequency (Hz/s) of nerve impulse in VMH as the index, and the time-effect of acupuncture action in different periods between groups were observed. Results: Electric activity in acupuncture group was higher than that in the obesity model group (P<0.001) and the normal group (P<0.01) respectively, and the curve of acupuncture action within 2 hours showed irregular fluctuation. Conclusion: Acupuncture can increase excitability of the satiety center, with a better long-term effect.
