http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이동구,신희용,심상혁,류영진,양지현,이철균 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
In this study, extraction performance using mixtures of hexane and polar solvents were evaluated to develop a more efficient method for large-scale lipid extraction from microalgae. The combination of hexane and methanol showed the highest fatty acid methyl ester (FAME) yield for lipids from Tetraselmis sp. The effects of extraction conditions including proportions of methanol to hexane, ratios of total solvent volume to dry biomass and extraction time on extraction yields were evaluated to determine cost-effective conditions providing higher lipid yields. Finally, the selected solvent mixture and optimal conditions were applied in larger scale extraction experiments with scale-up factors of 10, 50 and 100. FAME yields of large-scale extractions were almost consistent with increasing scale-up factors. The results of this study suggest that a mixture of hexane and methanol is a promising solvent for a large-scale lipid extraction from microalgae.
李棟求 圓光大學校 師範大學 外國語敎育學會 1973 英語英文學 Vol.1 No.-
어느나라 말이나 같은 현상ㅇ리 것이지만 우리가 영어를 살펴볼때 흔히 같은 또는 비슷한 뜻을 가진 어휘에 부딪치게 된다. 같은 뜻을 가진 어휘일지라도 그 뜻이 완전히 같은 것인가, 차이가 있다면 어떻게 다른가? 물론 이것은 문장을 통해서 그 쓰임새로 이해하게 되고 같은 뜻을 가진 단어일지라도 각기 단어가 품겨주는 뉴앙스는 상당히 다르다는 것을 알게 된다. 뜻이 같은 또는 비슷한 어휘를 동의어 또는 유사어라 한다. 특히 영어는 역사적으로 고찰할때 여러나라 말이 필요에 따라 수입되고 자연스럽게 동화되어 왔기 때문에 다른나라 말보다 유사어가 풍부한 것이다.
Hydrothermal liquefaction of Tetraselmis sp. MBEyh01L: Energy recovery optimization
이동구,류영진,신희용,양지현,이철균 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
Hydrothermal liquefaction experiment was performed as follow. One gram of dried Tetraselmis sp. MBEyh01L and 4g of water reacted in a batch reactor at different temperatures (300, 325, and 350°C) and reaction times (5, 10 and 30 min). In order to find optimum conditions which maximize energy recovery and quality of biocrude, we analyze biocrude yield and element composition of feedstock and biocrude. At 350°C and 30 min, there was highest energy recovery (82%) with a high energy density of 37.9 MJ/kg. Also, in this reaction condition, biocrude has lower contents of nitrogen and oxygen. Results showed that reaction conditions of 350°C, 30 min was optimum for maximizing energy recovery.
사염화탄소 장기투여로 초래된 간세포의 Lysosome의 전자 현미경적 연구
이동구,이원순,서창환 中央醫學社 1976 中央醫學 Vol.30 No.2
It is an well established fact that the long term administration of carbon tetrachloride to the experimental animal may cause hepatocellular degeneration which may advance to liver cirrhosis and occasionally even to liver cancer. However, there are not so much reports about the electron microscopic change of various organells in the cytoplasm of hepatocytes, and nearly no reports about the relationship between these structural alterations and functional change. Among the various changes in hepatocytes of the rats of Spraque Dowley which was treated with carbon tetrachloride for long term, the authors studied especially the change in lysosome which has close relationships with the intracellular digestive process. The following results were obtained: 1) The lysosomes of normal hepatocytes were very similar with those observed by other investigators. 2) Generally, the lysosomes of hepatocytes under long term administration of carbon tetrachloride was increased in number and particularly remarkable around the golgi complex and bile canaliculi. 3) There were found some differences in the content of increased lysosomes due to carbon tetrachloride and it was appreciated as a periodical differences of secondary lysosomes which were formed by union of autophagosome and primary lysosome. 4) Considering the fore mentioned results, the increase of lysosomes caused by the administration of carbon tetrachloride seemed to have close relationships with autophagocytosis.
Ooptimization of Energy Recovery in Hydrothermal Liquefaction of Chlorella sp.
이동구,류영진,정정호,이철균 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
Biofuels from microalgae has been considered as the most promising alternative for petroleum diesel. However, the biomass drying in biodiesel production process consumes intensive energy, which substantially lowers energy recovery. In this work, we performed hydrothermal liquefaction of Chlorella sp., which does not require biomass drying, to improve energy recovery of microalgal biofuels. The hydrothermal liquefaction reaction conditions were as follows: water content of 80%, reaction time of 5 to 30 minute, temperatures of 300°C and 350°C. The biocrude yields, elemental compositions, and higher heating values obtained for various reaction conditions helped predict the optimum conditions for maximizing energy recovery. As a result, the best condition of biocrude yield was attained with a 300°C, 10 minutes. In this condition, 50% of biocrude yield was attained, but maximum energy recovery of 78% was obtained at 350°C and 5 minutes.