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이주형,김원호,김용석,최성원,Lee, Juhyoung,kim, Wonho,Kim, Yongseok,Choi, Sungwon 한국항공운항학회 2016 한국항공운항학회지 Vol.24 No.1
Global aviation is projected to grow in demand by an annual average of 4.1% between 2014 and 2034. It can be said that environmental impact from aviation will therefore be expected to increase on a similar scale. As regards civil aviation emissions, the sector contributes between 2~3% to International aviation GHG emissions. In the European Union(EU), aviation emissions account for about 3% of the EU's total green house gas emissions, of which a majority are said to come from international flights. In terms of traffic volume in 2013, Korea's international aviation industry 11th with regard to passengers and 3rd with regard to cargo, attaining the overall rank of 5th in the world. GHG emissions has been increasing steadily over the last 4 years, averaging 3.9 percent a year, due to the growth of low cost carriers and the increased demand for air transportations. As for aviation in Korea, there are a number of means intended to attain the Government's emission control objective in an efficient manner, such as AVA (Agreement of Voluntary Activity), TMS (Target Management System) and ETS (Emission Trading Scheme). In addition, the Government intends to better adapt to ICAO's Global MBM(Market-based Measures) that will come into performance on Year 2020. In the study, we focused on GHG mitigation measures that is fulfilling the AVA, TMS, ETS in the Government and suggest the effective measures to reduction the aviation GHG emissions.
병아리 배아에서 겐타마이신 주입 후 발생한내림프낭의 형태학적 변화
이주형,김동영,이윤규,한규철,하종수,차흥억 대한이비인후과학회 2005 대한이비인후과학회지 두경부외과학 Vol.48 No.9
Background and Objectives:Gentamicin, which is known to have potential toxic effect to the inner ear, causes functional disturbance by destroying the inner ear at a concentration above a certain level. The purpose of this study was to identify morphological changes in the endolymphatic sac after gentamicin injection using chick embryo and the degree of changes according to different concentration of gentamicin. Materials and Method:The same breed of chicken (Gallus domesticus) was chosen and artificial growth incubator was used to germinate the eggs. Increasing the concentration of gentamicin at the same rate (10, 20, 30, 40 mg/ml), we injected it into the yolk sac of chicken and observed the morphological changes in the embryonic sac by light microscope. Results:As the concentration of gentamicin increased, the size of the endolymphatic sac increased and the thickness and contour of sac wall changed. Especially, the inner membrane thinned down greatly. Conclusion:In this research, we confirmed that endolymphatic sac is affected by gentamicin in proportion to its concentration. Especially, considering that inner membrane epithelial cells play an important role in the absorption of endolymph, we suggest that the ototoxicity of gentamicin causes the disturbance in the absorption of endolymph, which may cause endolymphatic hydrops.