http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
초임계유체 공정에 의한 유효지방산이 풍부한 현미유의 추출
김형진,신명옥,홍인권,박경애 ( H . J . Kim,M . O . Shin,I . K . Hong,K . A . Park ) 한국공업화학회 1997 공업화학 Vol.8 No.5
건강식품으로 각광받고 있는 현미유는 palmitic acid, linolenic acid, linoleic acid, oleic acid, stearic acid, tocopherol, squalene 등을 포함하고 있다. 본 연구에서는 국내산 현미겨로부터 초임계 이산화탄소를 이용하여 현미유를 추출하고, GC-MSD를 이용하여 조성을 분석 하였다. 현미유의 추출량은 추출공정의 조작온도와 압력에 의존하였으며, 초임계 이산화탄소의 환산밀도에 따라 추출된 기름내 지방산의 조성이 변화되었다. 또한 70∼80%의 기름이 4시간 정도의 조작시간내에 추출됨이 확인되었다. 특히 용매추출공정과 초임계유체 추출공정을 비교한 결과 초임계유체 추출공정에서 추출된 기름의 조성에서만 squalene이 포함되어 있음이 확인되었다. Brown rice oil contains palmitic acid, linolenic acid, linoleic acid, oleic acid, stearic acid, tocopherol, squalene, etc. The oil including essential fatty acids was extracted from the domestic brown rice bran using supercritical carbon dioxide(SCC) process, and the extracts were analyzed with GC-MSD. The extraction amount of brown rice oil was dependent upon the operating pressure and temperature, and the fatty acid composition of oil was varied with the reduced density(ργ) of the SCC. About 70-80% of brown rice oil was extracted in 4 hours. Especially, squalene which was not found in solvent extract phase was identified in supercritical fluid extraction phase only.
초임계유체 공정에 의한 유효 지방산이 풍부한 현미유의 추출
김형진,신명옥,이승범,홍인권 ( H . J . Kim,M . O . Shin,S . B . Lee,I . K . Hong ) 한국공업화학회 1997 응용화학 Vol.1 No.1
The oil including available fatty acids was extracted from the domestic brown rice using supercritical carbon dioxide(SCC), and analyzed with GC-MS. The extraction rate of brown rice oil depended upon the operating pressure and temperature, and the oil composition was varied with the reduced density (ρ_r) of the SCC. For constant temperature, it takes a short time to extract total amount of oil at high pressure. Extraction rate was increased linearly within the time, and decreased after the time with flow rate, temperaure and pressure. As reduced density was increased, partition coefficient was increased for large numbers of carbon atoms and double bonds, but it was in contrast with this for small numbers of carbon atoms and double bonds. So it was able to fractionate and concentrate available fatty acids from brown rice oil.
김형진(H. J. Kim),홍경태(K. T. Hong),홍금식(K. S. Hong) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
Demands for higher productivity in container terminal environments continues to escalate consideration of equipment upgrades. And then transportation of containers using the automated container crane becomes more and more important for productivity enhancements. Introducing a hybrid control architecture to the container crane, it provides a effective means to the automated operation of the container crane. This paper addresses the methodology for automation of container cranes. In addition, this paper proposes a new control architecture for the automated container crane and explains each component of that architecture. The control architecture is composed of a deliberative control layer, a sequencing layer, and a reactive control layer. The proposed architecture is applied to a dual-hoist double-trolley container crane.
김형진(H. Kim),이동규(D.G. Lee),강경욱(G.U. Kang),조천형(C.H. Cho),권오준(O.J. Kwon) 한국전산유체공학회 2016 한국전산유체공학회지 Vol.21 No.2
When spent fuel assemblies from the reactor of nuclear power plants(NPPs) are transported, the assemblies are exposed to short-term operations that can affect the peak cladding temperature of spent fuel assemblies. Therefore, it needs to perform the analysis of heat transfer on spent fuel dry cask during the operation. For 3 dimensional computational fluid dynamnics(CFD) simulation, it is proposed that the short-term operation is divided into three processes: Wet, dry, and vacuum drying condition. The three processes have different heat transfer mode and medium. Metal transportation cask, which is Korea Radioactive Waste Agency(KORAD)’s developing cask, is evaluated by the methods proposed in this work. During working hours, the boiling at wet process does not occur in the cask and the peak cladding temperatures of all processes remain below 400℃. The maximum peak cladding temperature is 173.8℃ at vacuum drying process and the temperature rise of dry, and vacuum drying process occurs steeply.