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      • The environmental factors affecting the variation of denitrifying bacteria and capacity in the sediment of Lake Daeho

        You-seak Go,Tae-Young Ahn 江原大學校 附設 環境硏究所 1992 環境硏究 Vol.9 No.-

        The denitrifying capacity and various environmental factors were investigated and the influence of environmental factors on the distribution of denitrifying bacteria and capacity was analyzed through stepwise multiple regression in the sediment of lake Daeho. The N2O production was measured with gas chromatography at in situ temperature by acetylene brockage mothod and range of N2O production rates were 0-9.18 ug-N/g-dw/day. The genera that showed denitrification capacity were identified as Pseudomonas, Corynebacterium, Flavobacterium, etc. It was shown through statistical analysis that the environmental factors affecting the variation of denitrifying bacteria and capacity differed with stations in the sediment of lake Daeho.

      • KCI등재후보

        대호 (大湖) 저수지 (貯水池) 퇴적토의 (堆積土) 탈질화 (脫窒化) 세균과 탈질화 (脫窒化) 작용능에 미치는 환경요인

        고유석,안태영 ( You Seak Go,Tae Young Ahn ) 한국하천호수학회 1992 생태와 환경 Vol.25 No.3

        The denitrifying potential and various environmental factors were investigated and the influence of environmental factors on the distribution of denitrifying bacteria and potential was analyzed through stepwise multiple regression in the sediment of lake Daeho. The N_2O production was measured with gas chromatography at in situ temperature by acetylene blockage method and the N_2O production rates were 0∼9.18㎍-N/g-dw/day. The genera that showed denitrification potential were identified as Pseudomonas, Corynebacterium, Flavobacterium, etc. It was shown through statistical analysis that the environmental factors affecting the variation of denitrifying bacteria and potential differed with stations. NO_3 was used as a terminal electron acceptor, however terminal electron acceptor could be changed by environmental factors.

      • SCIESCOPUSKCI등재

        Phylogenetic Analysis of Mycobacterium sp. C2-3 Degrading Polycyclic Aromatic Hydrocarbons

        Lee, Il-Gyu,Han, Suk-Kyum,Go, You-Seak,Ahn, Tae-Young The Microbiological Society of Korea 2001 The journal of microbiology Vol.39 No.4

        Mycobacterium sp. C2-3 was isolated from petroleum contaminated soil around an oil reservoir and identified by analysis of its 16S rRNA gene sequence, Strain C2-3 was able to use fluorene, phenan-threne, fluorathene and pyene as sole sources of carbon and energy, yet unable to geagrade naph-thalene, The strain was also able to use n-alkanes, such as hexadecane and heptadecane, and phenanthrene and pyrene, in particular, were degraded rapidly,. The phylogenetic data suggested that the isolate C2-3 is a thermosensitive, fast-growin strain of Mycobacterium sp.

      • KCI등재후보

        소양호의 질소동화와 광물화

        전은형,고유석,한석균,안태영 ( Eun Hyoung Jeon,You Seak Go,Suk Kyun Han,Tae Young Ahn ) 한국하천호수학회 1997 생태와 환경 Vol.30 No.4

        From September 1992 to August 1993, nitrogen assimilation and mineralization along with selected biological and physico-chemical environmental factors were investigated 9 times at two different stations in Lake Soyang. For the analysis of assimilation and mineralization, ion concentration analysis method was used. The range of nitrogen assimilation and mineralization rates were 0-100.6㎍-N L^-1 day^-1 and 0∼130.3㎍.-N L^-1 day^-1·respectively. At station 1. where was influent area, assimilation rate which was measured in the surface was correlated positively with temperature (r=0.82. p<0.01) and variation of ammonia (r=0.70, p<0.05) and it was correlated with chlorophyll-a (r=0.87, p<0.01) and nitrate (r= -0.75, p<0.05) in bottom against surface. At station 2, where was Joined with main and influent stream, assimilation rate in surface was correlated with temperature(r=0.77, p<0.05), pH (r=0.70,p<0.05) and ammonia (r=0.69, P<0.05) and mineralization rate in surface was positively correlated with temperature(r=0.86, p<0.01)and pH (r=0.84, p<0.01). Mineralization rate in bottom was correlated with N/P ratio (r=-0.67, p<0.05).

      • KCI등재

        대호 저수지의 세균분포에 미치는 환경요인

        안태영,곽노태,고유석 ( Tae Young Ahn,No Tae Kwak,You Seak Go ) 한국환경생물학회 1992 환경생물 : 환경생물학회지 Vol.10 No.2

        From April 1990 to March 1991, nineteen variables of physico-chemical factors, bacteria and activity were investigated 12 times at the 3 stations in Lake Daeho and the influence of environmental factors on the distribution of bacteria and activity were analysed through stepwise multiple regression. The results of multiple regression were as follows. At station 1, the variation of bacterial populations and activity was controlled by that of available nitrogen, ammonia and nitrate. At station 2, water temperature and BOD were shown as the major factors affecting the variation of microbial populations. The variation of heterotrophic bacteria and spore forming bacteria could be controlled by the variation of BOD and water temperature could explain the variation of proteolytic and lipolytic bacteria. The variation of total coliform bacteria depended on the variation of pH and nitrate by 68%. Fifty five percent of the variation of glucose turn-over rate was affected by phospate and salinity. At station 3, dissolved oxygen was found out as a main factor governing the variation of bacterial populations. The variations of heterotropic, proteolytic and lipolytic bacteria depended on dissolved oxygen by 32%, 32%, 58% and 59% repectively. Lipolytic bacteria was affected by water temperature as same as at station 2. And glucose turnover rate had a close relation to chlorophyll a.

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