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유환희,김종오,김의명 경상대학교 환경보전연구소 1996 環境保全硏究所報 Vol.4 No.1
This study represents the present situation and the future prospect of waste management, the regulations for environmental protection, and the criteria and procedure for selecting the waste landfill sites using GIS. The criteria for selecting the waste landfill sites composes of 8 items ; topography, hydrology, geology, ecology, location, landuse, society, and others. In order to secure the accuracy and objectivity for selection of suitable waste landfill sites, individual weights of 8 items were introduced using the concept of fuzzy set. Also, unacceptable conditions were described for deciding which sites should not be selected because of environmental concerns. As showed in the result obtained by the case study in Chinju, GIS technology was demonstrated as a useful tool for the management and analysis of environmental data in the suitability analysis for the waste landfill sites.
유환희,이승훈,임상동,홍상필 한국축산식품학회 2023 한국축산식품학회지 Vol.43 No.3
The objective of this study was to investigate the physicochemical and microbiological characteristics of round of Hanwoo by vacuum packaging film materials, polyvinylidene chloride (PVDC) and ethylene vinyl alcohol (EVOH). The packaged beef samples were stored in refrigerated conditions (2±1℃) for 12 weeks. Physicochemical analysis with pH, surface color, thiobarbituric acid reactive substances (TBARS) values, and volatile basic nitrogen (VBN) values and microbiological analysis with aerobic plate count (APC) and metagenomic analysis of packaged beef samples were performed. The pH and surface color did not change substantially during the 12 weeks and EVOHpackaged beef tended to be lower than those of PVDC-packaged beef. PVDC- and EVOHpackaged samples showed low TBARS and VBN values below standard limits. APC did not exceed 7 Log CFU/g for both samples during storage. In metagenomic analysis, Firmicutes and Lactobacillaceae were dominant phylum and family of the PVDC- and EVOH-packaged beef. In both packaged samples, Dellaglioa algida was the dominant species during storage, with the notable difference being the presence of Lactococcus piscium. Therefore, this study provided the information on the quality of vacuumpackaged beef according to different vacuum films for long-term refrigerated storage.
유환희,김종오,임승호 한국습지학회 1999 한국습지학회지 Vol.1 No.1
As important ecological systems. wetlands contribute a wide array of biological, social, and economic benefits. However, wetlands are lost until the present, primarily due to human induced land-use conversions. Society is placing demands for the efficient preservation and management on Woopo wetland as the first largest wetland in Korea GIS( Geographic Information System) is a rapidly developing technology for handling. analyzing. and modeling ecological information on wetlands In the paper, Woopo Wetland Management System has been developed by using Desktop GIS and Internet GIS technology lo embrace major functions: information query and browsing. spatial searching on map. and rule-based analysis. As a menu-driven system. these functions are designed to be implemented through customized menus. The developed system is expected to be used for the effective publicity service as well as the professional management of Woopo.