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정수슬러지 및 굴껍질의 토지주입시 금속성분의 용출특성에 관한 연구
김부길 ( Kim Boo-gil ),문종익 ( Moon Jong-ik ),성낙창 ( Sung Nak-chang ) 한국환경기술학회 2001 한국환경기술학회지 Vol.2 No.2
본 연구는 폐기물의 재이용방안으로 정수슬러지와 굴껍질의 토지주입시 발생되는 금속성분의 용출특성을 조사함으로써 이들 (중)금속성분의 용출에 의한 환경 · 보건학적 위해성을 예측하고자 하였다. 토양안정화 실험은 직경 100mm, 높이 100mm인 pot에 밭토양과 정수슬러지 및 굴껍질을 주입하였으며, 인공강우(pH 5.34)를 가하여 100일 동안 분석하였다. 실험결과 식물의 성장에 영양원소인 Al, Ca, K, Na과 인체에 치명적인 유해중금속인 As, Cd, Cr, Cu, Hg, Pb은 모두 토양오염기준에 적합하게 나타나 토지적용시 그 위해성이 적은 것으로 판단된다. 이는 굴껍질과 정수슬러지를 산성의 밭토양에 적용한 결과 pH 완충능력을 가져와 (중)금속성분의 용출을 억제시킨 것으로 사료된다. The purpose of this study is to evaluate the dissolution characteristics of metallic compounds during the soil application experiment using water treatment sludge mixed with oyster shells. Soil application experiments of the 100 days are conducted with artificial acid rain of pH 5.34, and which is the average acidity of the rainfalls around Busan Metropolitan area. Metallic compounds, including Al, Ca, K and Na, are thought to be nutrients to plants and dissoluted to maximum value of about 80.0mg/L. Hazardous heavy metals, such as As, Cd, Cr, Cu, Hg and Pb, are dissoluted far less than the soil pollution guideline. The application of water sludge mixed with oyster shells increases pH(soil acidity) and buffer capacity(CEC) of fanning soil. These facts imply that the application of sludge and oyster shells help the soil to attach the hazardous heavy metals as insoluble forms.
스키용품점 선택속성, 소비자 만족과 재구매 의도간의 관계
김대권(Dae Kwon Kim),조광민(Kwang Min Cho),석부길(Boo Gil Seok) 한국사회체육학회 2009 한국사회체육학회지 Vol.0 No.38
This study is intended to analysis the relationship of customer satisfaction and intention of repurchase by choice attributes of skiing goods store and to provide data for marketing strategy of skiing goods stores. For this study, questionnaires were distributed to 400 men and women skiing goods purchasers in their 20s or older chosen by convenience sampling among customers sampled by non-probability. Among the distributed questionnaires, answers from 325 respondents were analyzed using Window SPSS 12.0 version. Analyzed items include factor, reliability, frequency, correlation and multiple regression. 1. Analysis of the effect the skiing goods shop choice attributes have on customer satisfaction showed that customer satisfaction is significantly influenced by reliability and purchasing service in that order. 2. Analysis of the effect the skiing goods shop choice attributes have on intention of repurchase showed that repurchase intention is significantly influenced by purchasing service level and price competition in that order. 3. Analysis of the effect the skiing goods shop customer satisfaction has on intention of repurchase showed that customer satisfaction has significant effect on intention of repurchase.