볼락 Sebastes inermis 치어의 암모니아 배설에 미치는 수온의 영향

오승용,최상준 한국해양과학기술원 2009 Ocean and Polar Research Vol.31 No.3

A study was carried out to investigate the effect of water temperature on daily pattern and rate of total ammonia nitrogen (TAN) excretion in juvenile dark-banded rockfish Sebastes inermis (mean body weight: 14.8±0.3 g) under fasting and feeding conditions. Fish were acclimated over 10 days under three different water temperatures (15, 20 and 25℃). After 72 hours of starvation, fasting TAN excretion was measured at each temperature. To investigate post-prandial TAN excretion, fish were hand-fed with a commercial diet containing 47.7% crude protein for 7 days, two times daily at 09:00 and 17:00 hr. Water was sampled from both the inlet and outlet of each chamber every 2 hrs over a 24 hr period. Both fasting and post-prandial TAN excretion increased with increase in water temperature (P<0.05). Mean fasting TAN excretion rates at 15, 20 and 25℃ were 8.1, 9.0 and 9.2 mg TAN kg fish−1 h−1, respectively. The value of 15℃ was lower than those of 20 and 25℃ (P<0.05), but there was no significant difference between 20℃ and 25℃ (P>0.05). Mean post-prandial TAN excretion rates at 15, 20 and 25℃ were 20.1, 22.9 and 23.4 mg TAN kg fish−1 h−1, respectively. A peak post-prandial TAN excretion rate occurred after 12 hrs from the first feeding at 15℃ (mean 28.7 mg TAN kg fish−1 h−1), 20℃ (33.7 mg TAN kg fish−1 h−1) and 25℃ (36.8 mg TAN kg fish−1 h−1), respectively. The TAN loss for ingested nitrogen at 15℃ (36.2%) was lower than that of 20℃ (40.8%) and 25℃ (41.7%). Based on overall results, water temperature exerts a profound influence on the nitrogen metabolism of juvenile dark-banded rockfish. A study was carried out to investigate the effect of water temperature on daily pattern and rate of total ammonia nitrogen (TAN) excretion in juvenile dark-banded rockfish Sebastes inermis (mean body weight: 14.8±0.3 g) under fasting and feeding conditions. Fish were acclimated over 10 days under three different water temperatures (15, 20 and 25℃). After 72 hours of starvation, fasting TAN excretion was measured at each temperature. To investigate post-prandial TAN excretion, fish were hand-fed with a commercial diet containing 47.7% crude protein for 7 days, two times daily at 09:00 and 17:00 hr. Water was sampled from both the inlet and outlet of each chamber every 2 hrs over a 24 hr period. Both fasting and post-prandial TAN excretion increased with increase in water temperature (P<0.05). Mean fasting TAN excretion rates at 15, 20 and 25℃ were 8.1, 9.0 and 9.2 mg TAN kg fish−1 h−1, respectively. The value of 15℃ was lower than those of 20 and 25℃ (P<0.05), but there was no significant difference between 20℃ and 25℃ (P>0.05). Mean post-prandial TAN excretion rates at 15, 20 and 25℃ were 20.1, 22.9 and 23.4 mg TAN kg fish−1 h−1, respectively. A peak post-prandial TAN excretion rate occurred after 12 hrs from the first feeding at 15℃ (mean 28.7 mg TAN kg fish−1 h−1), 20℃ (33.7 mg TAN kg fish−1 h−1) and 25℃ (36.8 mg TAN kg fish−1 h−1), respectively. The TAN loss for ingested nitrogen at 15℃ (36.2%) was lower than that of 20℃ (40.8%) and 25℃ (41.7%). Based on overall results, water temperature exerts a profound influence on the nitrogen metabolism of juvenile dark-banded rockfish.

침지식 여과조를 이용한 합성 폐수의 탈질화

오승용 釜山水産大學校 海洋産業開發硏究所 1998 硏究業績集 Vol.1997 No.-

탈질 여과조에서 외부 탄소원 제거를 위한 적정 체류 시간과 외부 탄소원 종류 및 질

오승용 釜山水産大學校 海洋産業開發硏究所 2000 硏究業績集 Vol.1999 No.-

침지식 여과조를 이용한 합성 폐수의 탈질화

오승용 부경대학교 수산과학연구소 1997 硏究業績集 Vol.22 No.-

세계화?정보화시대 한국 국가-시민사회의 변화 - 정치관계법의 변화를 중심으로-

오승용 전남대학교 5.18연구소 2005 민주주의와 인권 Vol.5 No.1

In this paper, I beg to interpret globalization as anything but a direct and violent assault upon the most powerful symbols of global capitalism. In short, the issues at stake are more specific relations between state and civil society at the apex of the neo-liberal global capitalism. This paper is to investigate the Political Reform Act involving the changed relationship between state and civil society of Korea. Before the foreign exchange crisis in 1997, nothing is more important than the discourse of democratization. Since the foreign exchange crisis, productivity has been governing the realm of reform discourse. With the eclipse of the autonomy of state(political society), civil society as the place in the highest goodness leads to produce the logic of market-oriented discourse. Ramification of the civil society and the hegemony transition to the conservative civil society has been more powerful aspect since foreign exchange crisis in 1997. Once again, remark on the intrinsic dynamic of civil society is necessary.

까막전복 Haliotis discus 크기별 생존율에 미치는 수온의 영향

오승용,노경원,김민석,김종관 한국수산과학회 양식분과 2012 한국수산과학회 양식분과 학술대회 Vol.2012 No.6

호남 정치의 변화: 제19대 대통령선거를 중심으로

오승용,조정관 한국NGO학회 2017 NGO연구 Vol.12 No.3

This study describes both the background and the process in Honam(Southwestregion of South Korea) of the 19th presidential election in 2017, and analyzes itsresults by utilizing various survey data. This study wonders why the high popularsupport in Honam of Kukmin Party(People’s Party) shown in the preceding 20thNational Assembly elections faded away so drastically. It finds that the 2016“Rebate” corruption case and the presidential impeachment process in turn havecontributed to the change a lot. The presidential election was heavily affected by the impeachment process anda series of candle-light mobilizations. Ideological inclination is found to be adecisive factor in choosing presidential candidates. The progressive civil society,having been negative to the opposition party’s split, was invigorated by themobilizations and became strongly supportive to the Democratic Party whichpromised a clear transfer of government between political powers. In ballots,Honam voters turned out to be less homogeneous than before. There seems to bechances of realigning political parties. The existing regional party system may bereplaced by a more ideological party competition if Ahn Cheol Soo’s attempt toset up a party with centrism is successful.

수입식품 안전성 확보를 위한 일본정부의 시책

오승용,Oh, Seung-Yong 한국식품연구원 2010 食品技術 Vol.23 No.3

시니어 생활 보조용 스마트 실내이동기기 개발을 위한 보행 상황 근전도분석

오승용,박대현,이예원,권대규,홍철운 제어로봇시스템학회 2019 제어로봇시스템학회 각 지부별 자료집 Vol.2019 No.1

한국인 양극성 장애와 5-HT_2A Receptor Gene Promoter-1438A/G Polymorphism과의 연관성 연구

오승용,지익성,이영호 대한신경정신의학회 2001 신경정신의학 Vol.40 No.1

연구목적: 최근 5-HT□수용체 유전자 promoter의 -1438A/G 다형성이 보고되었고, 이러한 -1438A/G 다형성이 기분장애와 연관이 있는지 알아보려는 연구가 시도되고 있다. 저자 등은 -1438A/G 다형성이 한국인 양극성 장애의 발병에 있어서 유전적 요인으로 작용하는지 알아보기 위하여 본 연구를 시행하였다. 방법: 양극성 장애 환자 120명과 정상 대조군 120명을 대상으로 중합효소 연쇄반응을 이용하여, 5-HT□ 수용체 유전자 promoter -1438A/G 다형성의 유전자형과 대립유전자의 빈도를 비교하였다. 결과: 1) 양극성 장애 환자군의 5-HT□수용체 유전자 promoter -1438A/G 다형성의 유전자형은 A/A 14(12%), A/G 66(55%), G/G 40(33%), 정상 대조군의 유전자형 A/A 30(25%), A/G 59(49%), G/G 31(26%)로 양군간에 유의한 차이가 있었다. 2) 대립유전자의 빈도는 양극성 장애 환자군에서 A 0.39, G 0.61, 정상대조군에서 A 0.49, G 0.51로 양군간에 유의한 차이가 있었다. 결론: 5-HT□ 수용체 유전자 promoter -1438A/G 다형성이 한국인 양극성 장애의 발병과 연관이 있을 수 있다는 가능성을 제시한다. Objectives : This study was designed to investigate the association between 5-HT□ receptor gene promoter -1438A/G polymorphism and bipolar disorder in a Korean population. Methods : 5-HT□ receptor gene promoter -1438A/G polymorphism were typed with Po-lymerase Chain Reaction in 120 patients with bipolar disorder and 120 normal controls. Results : The distributions of the genotype in the bipolar disorder with A/A, A/G, G/G were 14(12%), 66(55%), 40(33%), and in the controls were 30(25%), 59(49%), and 31(26%). The allele frequencies of the bipolar disorders with A and G were 94(39.2%), 146(60.8%), and in the controls were 119(49.6), and 121(50.4), respectively. There were significant differences in genotype distributions and allele frequencies of -1438A/G between patients with bipolar disorder and normal controls. Conclusion : These results suggest that 5-HT□ receptor gene promoter -1438A/G poly-morphism may be related to the development of bipolar disorder in a Korean population.