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경막형 용융결정화에 의한 나프탈렌 혼합물의 분리에 관한 냉각속도와 결정화기 형태의 영향
강소림(So-Rim Kang),고주영(Joo-Young Koh),김철웅(Chul-Ung Kim),박소진(So-Jin Park) 한국청정기술학회 2007 청정기술 Vol.13 No.1
석유 잔사유(PGO)에 포함된 유효성분을 분리하기 위한 기초 연구로 컬럼 및 봉형 용융 결정화기를 사용하여 나프탈렌에 불순물로 2-메틸나프탈렌, 인덴, 1-메틸나프탈렌을 각각 포함시킨 혼합물에 관한 분리정제 연구를 수행하였다. 결정화시, 나프탈렌의 순도는 냉각속도가 낮거나, 융점이 상대적으로 낮은 불순물이 포함될 수 록 증가하는 경향을 나타내었으며, 동일한 조건에서 컬럼형 결정화기의 순도는 봉형에 비해 결정 화후 부분용융에서 순도의 증가에 기인하여 높은 경향을 나타내었다. As a basic research for the separation of effective components included in pyrolysis gas oil, the crystallization on each system of naphthalene with 2-methylnaphthalene, indene and l-methylnaphthalene as impurity has been carried out in column and cold-finger type crystallizer, respectively. In crystallization operation, the purity of naphthalene has been a tendency of increase with decreasing of cooling rate and in the presence of impurity with lower melting point. In comparison of crystallizer types, naphthalene purity in column type crystallizer was a higher value than that in cold-finger type due to effective sweating operation after crystallization.
권수애(Soo Ae Kweon),고주영(Joo Young Koh),정은희(Eun Hee Jung),김다혜(Dah Hye Kim),박장열(Jang Yeol Park),이원구(Won Goo Lee) 충북대학교 생활과학연구소 2011 생활과학연구논총 Vol.15 No.1
This study explores awareness and textile functions and satisfaction with wearing mountain-climbing clothes. A total of 297 usable questionnaires were obtained from consumers aged 20 to 59 who enjoed climbing, reside in the metropolitan cities, Korea. As a result, The possession rates of the whole mountain-climbing clothes and those of the items showed the statistically significant difference depending upon the genders and ages. The ways of acquiring the information about the functionalities of the mountain-climbing clothes were mostly through the friends, the family members or the staff of the sports wear store. The reliability about these informers was so strong. When it comes to the functionalities of the mountain-climbing clothes, the awareness of the thermokeeping property was high, but that of the anti-static feature was low. The awareness and the importance of the functionalities about the mountain-climbing clothes showed the significantly difference according to the genders and ages.In addition, the importance about the textile functionalities and the satisfaction of wearing mountain sportwear also showed the significant difference depending on the genders and ages. Therefore, planning the strategies of market segmentation according to genders and ages is needed in producing and selling mountain-climbing clothes.