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정명선,배한수,이봉연,민경혜,류덕환 계명대학교 생활과학연구소 2001 科學論集 Vol.27 No.-
The experimental results on the washing efficiency of detergent made from corn oil, wasted cooking oil and pig fat oil are as follows ; Laundry factors in this experiment are detergent concentration, laundry temperature and laundry time. 1.The surface tension of each detergent showed the lowest in 0.2% concentration corn oil 60.84, wasted cooking oil 61.11, pig fat oil 60.73dyne/cm. 2.The wasthing efficiency based on different concentration of detergents showed the highest in 0.2% concentration. 3.The highest washing efficiency appeared in 0.2% concentration 40℃ temperature and 40~50 min. time. There showed no difference in the washing efficiency according to the volume of water. It can be said that the frictional force of bearing rather than the volume of water worked on the efficiency.
초등학생의 교복착용 여부에 따른 피복비 및 피복관리행동 연구 : 대구시를 중심으로
류덕환,이봉연 한국의류학회 2000 한국의류학회지 Vol.24 No.8
The purpose of the research is to investigate the payment for clothing and clothing management behavior of the elementary school student children, and to study if there is any specific preference toward clothing according to whether or not they wear school uniform. 403 mothers of two elementary school students in Taegu were selected for this study. 1. There is no difference in the times of purchasing clothing between uniform group and nonuniform group. 2. Compared with their money earning, uniform wearing group more money in their clothing purchasing nonuniform group paid less money regardless of their earning 3. There is a significant of laundry practices in nonuniform group compared with uniform group. 4. According to the inquiry of the clothing concept between uniform group and nonuniform group, uniform group showed higher satisfaction with their uniform than nonuniform group with their nonuniform. 5. Uniform group showed high positive view on the uniform, and both groups showed partial positive view on the nonuniform. There was a positive correlation among clothing payment, clothing managemen: behavior, and clothing dynamics of both groups.