RESUMO
An experimental study of the semi-cylindrical self-magnetic insulated diode with No. 25 transformer oil and methyl silicone oil filled into stainless steel metal foam as anode discharging materials is carried out for the first time. The results show that the lifetime of this type of ion beam diode is about 3000 discharges, significantly higher than that of the conventional solid-film ion beam diode, which is about 400 discharges. Meanwhile, the ion beam current density of transformer oil and methyl silicone oil is higher than the polyethylene film, and the maximum ion beam current density of No. 25 transformer oil and methyl silicone oil is 330 A/cm2 and 250 A/cm2, respectively. In addition, the ion beam current density of No. 25 transformer oil and methyl silicone oil is more stable than that of the polyethylene film.
RESUMO
Objective@#To analyze the weight reduction effect of fitness walking and jogging on overweight and obese college students from the point of view of exercise style and exercise effect, so as to provide practical reference for overweight and obese college students daily weight control.@*Methods@#A total of 40 overweight and obese male college students were divided into walking group and jogging group. Five times a week, 40 minutes each, for 8 weeks. The body mass index (BMI), percentage of body fat (PBF) and cardio-pulmonary function (CF) indexes were measured before and after the experiment.@*Results@#The indices of obesity group were higher than that of superstructure under resting and exercise state (P<0.05). Heart rate (HR), oxygen uptake (VO2) and energy consumption of jogging group were higher than those of exercise group (P<0.05). The weight, PBF and BMI decreased, FC increased(P<0.05). Jogging effect was more significant than fitness walking, and the number of superstructure weight loss, PBF decreased and FC increased more than fitness walking. The effect of obesity group and overweight group was consistent.@*Conclusion@#Both fitness walking and jogging help lose weigh among overweight and obese college students,with fitness walking better than jogging.For those who are not suitable or not prefer jogging could choose to have a longer duration of fitness walking.
