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이철원 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.20 No.1
The aim of this research is to investigation types of leisure activities of university students and levels of their stress from daily life and enable them to spend their adolescence soundly. The objects of this research are 420 students in total, who are systematic stratified cluster random sampling ones, the university which located in J city. Frequency, period, types etc of participation in leisure activities are used as independent variables and levels of their stress from daily life are used as independent variables. Results derived from the research by the analysis of monistic dependent variable are as follows. First, It proved that levels of stress caused by types of participation in leisure activities were lower in the groups participating sports and social & amusement activities than in the service & studying activities. Second, It proved that levels of stress caused by frequency of participation in leisure activities were lower in the groups participating 4~5 times per week activities than in the once time per week activity. Third, It proved that levels of stress caused by period of participation in leisure activities showed no difference between them
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국내 산지별 참기름의 HPLC에 의한 Sesamin, Sesamol의 함량과 Villavecchia-suarez 정색반응
이철원,곽인신 대한환경위생공학회 1995 대한환경위생공학회지 Vol.10 No.3
In the present study the sesamin and sesamol contents of the sesame extracts prepared from nine provinces in Korea were determined HPLC method. A comparative test was also carried out using the Villavecchia-suarez test, the red colored reaction for the sesamol and sesamol derivatives. The contents of sesamin and sesamol of the sesame oils from each area by the HPLC method were 0.57~0.78% and 0.010-0.023%, respectively. and the paralled results were obtained by the Villavecchia-suarez test and the HPLC method. The average contents of the sesamin was $0.68{\pm}0.074%$ by the HPLC method and the average absorbance of the Villavecchia-suarez test was $0.56{\pm}0.034$. The contents of sesamol from sesame oil by the HPLC method and the Villavecchia-suarez test were so low that it was not possible to correlate with the sesamin contents. The contents of sesamol from the sesame oil produced in Kyeong-gi and Jeon-nam provinces were $0.010{\pm}0.002%$ and $0.023{\pm}0.004$, respectively.
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이철원 대한치과이식임플란트학회 1989 The Korean Academy of Implant Dentistry Vol.9 No.1
Among the dental implants, endosseous dental implants are popular nowadays. However, a dentist would be a little bit hesitating to select a endosseous dental implant which is suitable to his patient. I will introduce the criteria for the evaluation of endosseous dental implant success and the background of clinical and basic research of each implants which is available in our country. If a dentist gets improved information from this article and trains himself continuously, he can have good result from his treatment.
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여자 수영선수들의 체력요인에 의한 경기력 결정요인 분석
이철원,박기헌,이희창 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3
This study was undertaken to identify factorial structure of physical fitness components for female swimmers, In order to accomplish this purpose, the 8 physical fitness test were conducted to 2003 winter preliminary national delegate 30 female swimmers(20 female middle school swimmers, 10 high school swimmers). For the concretely, this study was conducted to physical fitness battery was grip strength, sit-ups, 1600m run, 10m shuttle run, standing trunk. flexion, closed eyes foot balance, Factor analysis was applied for analyzing factorial structure of each physical fitness components, The implication of the study are as follows; 1. Among the factors of physical fitness, two factors are important, The first called Factor I outcomes total ratio 35.910%, the second factor called Factor Ⅱ outcomes 17,347%. 2. Factor I is the standing high jump(.840), grip strength(.689), closed eyes foot balance(.491), 10m shuttle run(-.397), 160m run(-.377), standing trunk flexion(-.317) composed of speed, muscular strength, balance that had an impact on a maximum performance outcomes in female swimming match. 3. Factor Ⅱ is complex components factor composed of 10m shuttle run(-.714), standing trunk. flexion(.694), sit-ups(-.714), 1600m run(-.524).
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