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이정석(J.S. Lee),이규태(K.T. Lee),강성길(S.G. Kang) 한국해양환경·에너지학회 2005 한국해양환경·에너지학회 학술대회논문집 Vol.2005 No.11
The capture of carbon dioxide generated by fossil fuel combustion, coupled with its subsequent storage into deep sea area, has been proposed on a number of occasions and is currently the subject of discussion in many countries. However, we don't understand completely how the introduction of large mass of CO₂ into deep ocean will affect on the deep-sea ecosystems, which have been adapted to fairly constant physico-chemical conditions. Therefore, researches on the influences of high CO₂ concentrations on deep-sea organisms are essential for assessing the effects of deep-sea CO₂ sequestration. Here we review the physicochemical and biological effect of the elevated CO₂ concentrations on marine organisms. Results showed that hypercapnia coupled with acidosis resulted in various biological adverse effects. The systematic risk assessment methods should 1. developed to suggest the sequestration procedure having lowest risk as well as to assess the practical impact of ocean disposal of C02 on the marine ecosystems.
실험 계획법을 이용한 흡기계의 소음 저감 성능 최적화에 관한 연구
박능서(N.S.Park),오재응(J.E.Oh),이규태(K.T.Lee),한광희(K.H.Han) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_2
The intake noise, a major source of the vehicle noise, was studied to reduce the level of the noise for many years. Traditionally. the intake noise has been analyzed and improved by the experiments, namely, the trial and error approach. The exact anaysis of the intake system is needed to reduce the lovel of the intake noise. So. we developed the performance prediction software of the intake system. In this study. we accomplished research of improving the attenuation performance of the intake system using taguchi method. On the basis of the existing design. we selected factors such as length and radius of the inlet. outlet and manifold that was thought to effect the attenuation performance of the intake system. Factors are arranged by the L18 orthogonal array and simulation is performed by the performance prediction software of the intake system.<br/>