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냉동 후막 성형에 의한 다공성 Al<sub>2</sub>O<sub>3</sub> 필름 제조
신란희,구준모,김영도,한윤수,Shin, Ran-Hee,Koo, Jun-Mo,Kim, Young-Do,Han, Yoon-Soo 한국분말야금학회 2015 한국분말재료학회지 (KPMI) Vol.22 No.6
Porous thick film of alumina which is fabricated by freeze tape casting using a camphene-camphor-acrylate vehicle. Alumina slurry is mixed above the melting point of the camphene-camphor solvent. Upon cooling, the camphene-camphor crystallizes from the solution as particle-free dendrites, with the $Al_2O_3$ powder and acrylate liquid in the interdendritic spaces. Subsequently, the acrylate liquid is solidified by photopolymerization to offer mechanical properties for handling. The microstructure of the porous alumina film is characterized for systems with different cooling rate around the melting temperature of camphor-camphene. The structure of the dendritic porosity is compared as a function of ratio of camphene-camphor solvent and acrylate content, and $Al_2O_3$ powder volume fraction in acrylate in terms of the dendrite arm width.
저온살균우유의 실시간 잔류유통기한 모니터링 시스템 개발
이민우(Minwoo Lee),김지영(Ji young Kim),김병삼(Byeong-Sam Kim),정재윤(Jae-Yoon Jung),구준모(Junemo Koo) 대한설비공학회 2012 대한설비공학회 학술발표대회논문집 Vol.2012 No.11
The purpose of this study is development of online shelf-life monitoring system for low-temperature pasteurized milk. To monitor loss of milk shelf-life, we determined the bacterial growth as quality factor and temperature history as the variable. A number of storage experiments for pasteurized milk have been carried out with temperature range 5-40℃. Baranyi and Roberts model was used to predict bacterial growth in Pasteurized milk. The model determination factors were found to be 0.93 under constant temperature and 0.89 under varying temperature conditions.