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배헌민(Heon-Meen Bae),김인철(In-Chul Kim) 한국해양공학회 1993 韓國海洋工學會誌 Vol.7 No.1
In is well known that a cyclic Karman vortex street is thrown out periodically from cylinder whose axis is vertical to the bulk flow. When the cylinder is vibrating in the frequency close to that of Karman vortex street, the vortex shedding frequency is locked onto that of cylinder. While there are many experimental studies for this phenomenon compared with analytical studies by numerical calculation, are very limited. In this study, a new algorithm for moving boundary is proposed and a simulator is develoed, which can deal with this phenomenon with experimental studies.
Tae-Gyu Park,Yang-Soon Kang,Young-Tae Park,배헌민,Yoon Lee 한국조류학회I 2009 ALGAE Vol.24 No.2
The rDNAs of fish-killing dinoflagellates Cochlodinium polykrikoides and Karlodinium veneficum were detected from the East China Sea by species-specific real-time PCR probes. Sequence analyses using the partial ITS sequences from the real-time PCR products showed identical sequences with C. polykrikoides and K. veneficum, respectively and low expectation values (E-value) of less than 1e-5 suggesting the presence of these organisms in the East China Sea shelf water that flows into the Tsushima Strait and the Yellow Sea.
해양퇴적층에서 적조생물 (Cochlodinium polykrikoides)의 혐기성 분해과정 중 황토가 휘발성 지방산 생성에 미치는 영향
박영태 ( Young Tae Park ),이창규 ( Chang Kyu Lee ),박태규 ( Tae Gyu Park ),이윤 ( Yoon Lee ),배헌민 ( Heon Meen Bae ) 한국수산과학회(구 한국수산학회) 2012 한국수산과학회지 Vol.45 No.5
The formation of volatile fatty acids (VFAs) and changes in p1-1, oxidation and reduction potential(Eh) and acid volatile sulfide(AVS) with the addition of yellow clay were investigated using microcosm systems to examine the effects of yellow clay dispersion on the anaerobic decomposition of Cochiodinium polykrikoides in marine sediments. The acetate concentration reached a maximum by day 4 and was 1.2-1.8 fold less in the sample treated with yellow clay compared to the untreated sample (224-270 vs. 333uM), The formate concentration reached a maximum by day 1 and was 1.3-2.8 fold less in the sample treated with yellow clay compared to the untreated sample (202-439 vs. 563uM). The propionate concentration reached a maximum by day 2 and was 1.5-1.8 fold less in the sample treated with yellow clay compared to the untreated sample (32.6 vs. 57.2uM), After the amounts of acetate, formate and propionate peaked the levels dropped dramatically due to the utilization by sulfate reducing bacteria. The Eh of the samples treated with yellow clay was similar to the untreated sample on day 0 but was higher in the sample treated with yellow clay (l40-206 mV) from days 4 to 17. AVS started to form on day 3 and this was sustained until day 6, and 1.2-2.2 Cold less was produced in the sample treated with yellow clay compared to the untreated sample (40.2-69.3 vs. 83.2-93.8 mg/L). Accordingly, during the anaerobic decomposition of C. polvkrikoides in marine sediments, yellow clay dispersal seems to suppress the reduction state of Eh and the formation of volatile fatty acids (acetate, formate and propionate) used as an energy source by sulfate reducing bacteria, indicating that this process controls the production of hydrogen sulfide that negatively affects marine organisms and the marine sediment environment.