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조대수(Dae-Soo Cho),김원찬(Won-Chan Kim),이기역(Ki-Yoek Lee),손원석(Won-Sock Son),김창민(Chang-Min Kim) 한국컴퓨터정보학회 2013 한국컴퓨터정보학회 학술발표논문집 Vol.21 No.2
본 논문에서는 블록 놀이의 질적 향상을 위한다. 일반 블록 완구의 해결하지 못한 문제점인 조립과 완성으로 즐거움이 끝나고 분리시의 지루함을 해결하기위한 블록 자동분리 시스템에 관한 것으로, 좀 더 구체적으로는 블록을 이용하여 물체를 완성시키는 것에서 더 나아가 자동분리 블록의 외부에 부착된 마커를 스마트 폰을 이용하여 인식하고, 인식된 마커에 해당하는 영상을 스마트 폰을 통해 보며 미션을 수행하여 흥미를 유발시키고, 미션 완료 후 블록을 자동 분리 시키기 위한 블록 자동분리 시스템에 관한 것이다. 특히, 블록에 분리장치를 구성함으로써 스마트 폰과의 통신에 의해 분리장치가 동작하여 블록을 자동으로 분리 가능하도록 하여 물체를 완성 후 분리 시에 느끼는 지루함을 최소화하고, 흥미를 극대화시킬 수 있도록 한다.
Lee, Albert S.,Lee, Jin Hong,Choi, Seung-Sock,Cho, Kie Yong,Yu, Seunggun,Koo, Chong Min,Baek, Kyung-Youl,Hwang, Seung Sang Pergamon Press 2017 European polymer journal Vol.95 No.-
<P><B>Abstract</B></P> <P>A series of inorganic-organic hybrid UV-curable ionic polysilsesquioxanes were synthesized through Menshutkin reactions with various tertiary amine vinyl or methacrylic monomers to quantitatively quaternize various alkyl-halide ladder-like functionalized polysilsesquioxanes. The effect of quaternary ammonium salt cation, anion, as well as UV-curing were examined. Obtained ionic polysilsesquioxanes exhibited exceptional thermal stability (>350°C), high surface hardness (6H), high refractive index (>1.66), and substantial decrease in brittleness index. In addition to the excellent hardcoating properties, the ionic groups imbued antibacterial properties against gram positive and gram negative bacteria, which may allow for applications in flexible electronic devices.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A series of ionic group-functionalized hybrid copolymers were synthesized. </LI> <LI> UV-curing yielded mechanically robust ionic surfaces with optical transparency. </LI> <LI> Effect of cation and anion structure on antibacterial properties were investigated. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Han-Sol Park,전병환,Sung Hoon Woo,Jaechan Leem,Jung Eun Jang,Min Sock Cho,박인선,이기업,고은희 한국분자세포생물학회 2011 Molecules and cells Vol.32 No.6
Methionine and choline-deficient diet (MCD)-induced fatty liver is one of the best-studied animal models of fatty liver disease. The present study was performed to clarify the relative contributions of individual lipid metabolic pathways to the pathogenesis of MCD-induced fatty liver. Hepatic lipogenesis mediated by the sterol regulatory element-binding protein (SREBP-1c) was increased at 1 week, but not at 6 weeks, of MCD feeding. On the other hand, ^(14)C-palmitate oxidation did not change at 1 week, but significantly decreased at 6 weeks. This decrease was associated with increased expression of fatty acid translocase, a key enzyme involved in fatty acid uptake. Expression of endoplasmic reticulum stress markers was increased in mice given MCD for both 1 and 6 weeks. These findings suggest the presence of time-dependent differences in lipid metabolism in MCD-induced fatty liver disease: SREBP-1c-mediated lipogenesis is important in the early stages of fatty liver disease, whereas increased fatty acid uptake and decreased fatty acid oxidation become more important in the later stages.