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Kim, Min Young,Lee, Sang Hoon,Jang, Gwi Young,Park, Hye Jin,Li, Meishan,Kim, Shinje,Lee, Youn Ri,Noh, Young Hee,Lee, Junsoo,Jeong, Heon Sang Elsevier 2015 Food chemistry Vol.166 No.-
<P><B>Abstract</B></P> <P>This study was performed to evaluate the enhancement of functional components of germinated rough rice. Rough rice was germinated at 37°C for 6days, and subjected to a high hydrostatic pressure treatment (HPT) at 30MPa for 24h (HP24) and 48h (HP48). Germinated rough rice without HPT (HP0), HP24, and HP48 were analysed for their functional components. The highest γ-aminobutyric acid, total arabinoxylan, and tricin 4′-<I>O</I>-(<I>threo</I>-β-guaiacylglyceryl) ether contents were 121.21mg/100g, 10.6%, and 85.82μg/g, respectively, after HP48 for 2days. γ-Oryzanol contents increased from 23.19–36.20mg/100g (at HP0) to 31.80–40.32mg/100g (at HP48). The highest vitamin B (60.99mg/100g) and E (4.07mg/100g) contents were observed after HP24 for 5 and 2days, respectively. These results suggest that a combination of HPT and germination efficiently enhances the functional characteristics of rough rice.</P> <P><B>Highlights</B></P> <P> <UL> <LI> High pressure treatment (HPT) increased the extractability of functional components. </LI> <LI> HPT accelerated the biosynthesis as an enhancement of the enzymatic reaction rate. </LI> <LI> HPT provided the useful information for utilization of germinated rough rice. </LI> </UL> </P>
이동질량장치와 부력엔진을 포함한 무인 수중글라이더의 동역학 모델링 및 운동성능 해석
김동희(Donghee Kim),이상섭(Sang Seob Lee),최형식(Hyeung Sik Choi),김준영(Joon Young Kim),이신제(Shinje Lee),이용국(Yong Kuk Lee) 한국해양공학회 2014 韓國海洋工學會誌 Vol.28 No.5
Underwater gliders do not have any external propulsion systems that can generate and control their motion. Generally, underwater gliders would obtain a propulsive force through the lift force generated on the body by a fluid. Underwater gliders should be equipped with mechanisms that can induce heave and pitch motions. In this study, an inner movable and rotatable mass mechanism was proposed to generate the pitch and roll motions of an underwater glider. In addition, a buoyancy control unit was presented to adjust the displacement of the underwater glider. The buoyancy control unit could generate the heave motion of the underwater glider. In order to analyze the underwater dynamic behavior of this system, nonlinear 6-DOF dynamic equations that included mathematical models of the inner movable mass and buoyancy control unit were derived. Only kinematic characteristics such as the location of the inner movable mass and the piston position of the buoyancy control unit were considered because the velocities of these systems are very slow. The effectiveness of the proposed dynamic modeling was verified through sawtooth and spiraling motion simulations.