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L929 및 CV1 세포를 사용한 한천중층법에서 치과용 합금의 독성 비교
조욱희,윤일,최석규,김형일 大韓齒科器材學會 1993 대한치과재료학회지 Vol.20 No.2
Biocompatability of pure gold, Au alloy, pure titanium, Ti alloy, Ni-Cr alloy, Co-Cr alloy and pure copper was assessed through the agar overlay test using L929 and CV1 cells. Pure gold, pure titanium and Ti alloy had none to mild cytotoxicity, Ni-Cr, Co-Cr and gold alloy had mild to moderate cytotoxicity and pure copper had severe cytotoxicity. Generally, L929 cells were more sensitive to toxic substances than CV1 cells. The application of human gingival fibroblast to the agar overlay method seemed not to be proper.
삼천포 화력발전소 연안의 플랑크톤상을 중심으로한 해양 환경
金世華,李晉煥,洪旭熹 龍仁大學校 1993 용인대학교 논문집 Vol.9 No.-
Impacts of the power plant operation located in the coastal area of Samchonpo were investgated in the view point of the population dynamics of zoo -and phytoplankton five times seasonally during the period from August 7 1990 to August 27 1991. Ninty nine taxa of phytoplankton, representing 2 forma, 1 variety, 79 species and 17 unidentified species belonging to 39 genera were tentatively identified. Phytoplankton standing crops varied with months and stations ranging from 5.8×104cells /l (November 1990, station 5) to 4.83×106cells /l (May 1991, station 4) in surface, ranging from 2.9×105cells /l (Novemver 1990, station 5) to 5.90×106cells /l (May 1991, station 4) in bottom. Dominant species through the present study were Chaetoceros compressus and C. curvisetus in August 1990, Nitzschia pungens in November, Eucampia zodiacus and Skeletonema costatum in February 1991, Leptocylindrus danicus in May, and S. costatum and S. tropicum in August. Causative organisms of red -tide due to diatoms were 24 taxa. Among them, six species occurred throughout the year ; Chaetoceros debilis, Cylindrotheca closterium, Guinardia flaccida, Nitzschia pungens, Rhizosolenia setigera and Skeletonema costatum. Chlorophyll -α was fluctuated ranging from 6.18mg /m3 (August 1990, station 1) to 23. 77mg /m3(February 1991, station 4) in surface, This value of chlorophyll -a might be assumed that eutrophication occurred in studied waters. Twenty two taxa of zooplankton communities, representing 14 copepods, 4 cladocerans, 2 chaetognaths, 1 protozoan and 1 appendicularian were identified. Zooplankton abundance varied with months and stations ranging from 1,677 indiv./m3 to 18,057 indiv./m3.