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서광석,민달기 京畿專門大學 1999 京畿專門大學 論文集 Vol.- No.27
This paper is a research on the life cycle assessment (LCA) of plastic bag, bottle and container. In order to compare the environmental analysis of plastic, paper, pulp, aluminium, glass and steel material, it is studied by LCA technique from before-discarded step such as the material collection, processing of product, energy and water consumption, and product transportation, to after-discarded step such as waste product transportation, air and water pollutant discharge, waste generation, and treatment and/or disposal of waste. As a results, plastic material has a better environmental assessment than the other materials in before- and after-discarded step. So, plastic material must be newly concerned with a green material, and must be reappraised to the waste-deposit systems.
徐光錫 김천대학교 1991 김천대학교 논문집 Vol.12 No.-
The effect of inducivility of sister chromatid exchanges (SCES) in Chinese Don cells were studied in order to examine the cyto- toxici ty of metal compounds, which are soluble in water. The result obtained was as follow. The increases of frequency of SCE s in Chinese hamster Don cells were found in 3 metal comp- ounds : CrO3, K2CrO,, K2Cr207 (P<0.01).