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김형곤 圓光大學校 附設 體力科學硏究所 2000 體力科學硏究 Vol.23 No.-
For the purpose of this research was carried out to clarity the response of electrolytes concentrations accompanied exercise period. The subjects selected for this research were six trained group students and six untrained group students. And we came to the conclusions below. Firstly, by change of concentrations of an electrolytes in the case of Na^(++) has been decreased similaly after l2weeks(p<.05). Secondly, In the case of K^(+) has not been showed similarly differences the following anaerobic exercise period. Thirdly, In the case of Ca^(++) has been increased similaly after 12weeks(p<.05).
김구,김형곤,유영창 圓光大學校 附設 體力科學硏究所 2005 體力科學硏究 Vol.28 No.-
For the purpose of this research we had selected 12 college male - 6 for the control group, 6 for the exercise group(30% VO_(2)max, Ventilatory Threshold, 75% VO_(2)max) - to prove that endurance exercise influences the thermophysiological responses, cardiopulmonary functions, and body composition. According to endurance exercise, we made the groups 3 exercise intensity and we measured the effect of the cardiopulmonary functions, and body composition for 30min. And we came to the conclusions below. VE, VO_(2) and HR all measured items show significant difference(p<.01), between measured period, were higher in 75% exercise group, VT exercise group, 35% exercise group subsequently.
이정윤,김형곤,권성택 圓光大學校 附設 體力科學硏究所 2004 體力科學硏究 Vol.27 No.-
The purpose of this study is to elucidate the effects of regular swimming exercise on blood lipoprotein metabolism and leptin. In this study, swimming(HRmax 50-75%, 60min/day, 5day/week) was performed and 18 were participated for study during 16 weeks. They were divided into two groups, one group as experimental group(n=9) and the other as control group(n=9). A measured factors were TC, TG, HDL-C, LDL-C and leptin.. All data were expressed as mean± standard deviation by using spss package program(win 9.0), one way anova and independent t-test was used to analyze the difference of exercise duration(0week, 8week, l2week, l6week) between groups. For all statistics performed statistical significance was set at p<.05. After exercise intervention, TC, TG, HDL-C, LDL-C and leptin were found to have more significant effects in the experimental group than control group. This results indicated regular swimming exercise training is beneficial to prevent and treat cardiovascular disease and obesity.
高效率 MOS(Al-SiO_2-pSi) 太陽電池의 設計와 製作
李英姬,張志根,李炯坤 단국대학교 1985 論文集 Vol.19 No.-
The mm insulating layer of MOS solar cell allows control over not only the magnitude of the dark current flowing through the diode but also the dominant type (majority or minority carrier) of this current. Desirably low values of dark current for majority carrier have been postulated incorporating charge trapping centers suitably located within insulator or high fixed positive charge density (Q_ss) at the Si-SiO_2 interface. Based on these models, the MOS solar cell with surfaceinversion layer by incoporation high Q_ss at the Si-SiO_2 inferface is designed in this paper. As a result of fabrication of this cell using pSi Substrate (orientation;〈111>, ρ; 10Ω-㎝), the average efficiency of the MOS solar cell is obtained with 10% on the active area basis.