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사용 후 터치스크린 패널의 투명전극용 ITO의 폐기방법별 물질 전과정평가
이수선 ( Soo Sun Lee ),이나리 ( Na Ri Lee ),김경일 ( Kyeong Il Kim ),안중우 ( Joong Woo Ahn ),홍태환 ( Tae Whan Hong ) 한국전과정평가학회 2012 한국전과정평가학회지 Vol.13 No.1
In this research, Material Life Cycle Assessment(MLCA) has been carried out to evaluate the environmental impacts about disposal of ITO(Indium Tin Oxide). ITO is often used for touch and flat screen of phone, PC, computer because of its electrical conductivity and optical transparency which it can be deposited as a thin film. Indium is one of the rare earth and used to ITO material. When demand of the ITO increases, shortage of indium have concerned. This is not only resources insufficient problem it is also environmental problem. Because ITO which did not recycle and landfill or incineration cloud be cause a environmental pollution. According to waste treatment method, disposal about 1kg of ITO was used as the reference flow. There are difficulties for data collection about emissions from waste treatment in LCA. So there is a need to focusing landfill, incineration process for ITO. From this study, it is found out that landfill of ITO has the highest environmental impacts except GWP. But incineration is also high environment impact value by a little gap.
이수선(Soo Sun Lee),강대호(Dae Ho Kang),최성권(Song Kwon Choi),최윤경(Yoon Kyung Choi),오준환(Joon Hwan Oh),신진웅(Jin Woong Shin),김도강(Do Gang Kim) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.1
Gastrointestinal stromal tumor (GIST) of ileum is a rare tumor of gastrointestial tract that arise from primitive mesenchymal cells. GIST occur predominantly in persons over 40 years of age with an equal sex incidence. GIST expresses a heterogenous clinical course and the most important prognostic factors are tumor size, site, degree of mitotic activity, tumor necrosis. We report a case of GIST of ileum, which was misdiagnosed as extrauterine leiomyoma preoperatively.
할로겐을 소유한 이원소 고리 화합물에 관한 연구(제 3보) 유기산 또는 Lewis산 존재하에서 이루어진 초산 Furfuryl의 염소화반응
김유선,이수선,오명원,Kim, You-Sun,Lee, Soo-Sun,Oh, Myung-Won 대한화학회 1970 대한화학회지 Vol.14 No.3
Furfuryl acetate was chlorinated in presence of acetic acid using carbontetrachloride as the solvent. When the chlorination proceeded at the low concentration of acetic acid, the formation of the tetrachloride was more efficient than that of higher concentration. The chlorination done in presence of various Lewis acids such as aluminum chloride, hydrogen fluoride, and borontrifluoride could not give high yield of tetrachloride, but trichloride. In case of borontrifluoride and hydrogen fluoride, the decomposition of the reaction mixture was apparent. The results were discussed in terms of the stability of furfuryl nucleus towards an electron acceptor and the convenient procedure of preparing trichloro furfuryl acetate was described.
최성권(Song Kwon Choi),박동춘(Dong Chun Park),최윤경(Yoon Kyung Choi),이지은(Ji Eun Lee),이수선(Soo Sun Lee),박윤희(Youn Hee Park),유영옥(Young Oak Lew),김대훈(Dae Hoon Kim),남궁성은(Sung Kwen Namkoong) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.12
Acardia is a very rare congenital anomaly occurring in less than 1 in 35,000 deliveries. Acardiac parabiotic twin has been reported only in multiple, monochronic pregnancies. This anomalous fetus is sustained in utero by parasitic anastomoses to the circulation of its usually normal co-twin and is therefore not compatible with extrauterine survival. A case of an acardiac parabiotic twin is described, and the literature concerning the incidence, classification and etiology of acardiac is reviewed.