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Lee, Youngjun,Na, Sangcheol,Lee, Sanghee,Jeon, Noo Li,Park, Seung Bum The Royal Society of Chemistry 2013 Molecular bioSystems Vol.9 No.5
<P>We synthesized a series of Seoul-Fluor-based lipid droplet bioprobes with a linear range of lipophilicity and identified SF44 and SF58 as SF-based LD bioprobes in microalgae for biofuel research as well as in mammalian cells. Unlike Nile Red, SF-based bioprobes can stain algal LDs with excellent efficiency under the non-invasive and non-cytotoxic conditions.</P> <P>Graphic Abstract</P><P>Seoul-Fluor-based bioprobes can visualize lipid droplets in a non-invasive manner without washing in microalgae for the application in bio-fuel study. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2mb25479d'> </P>
가솔린 엔진의 배출가스 저감을 위한 강건설계 기법을 이용한 싱글 모노리스형 촉매변환기의 축방향 귀금속 분포 최적화
이상철(Sangcheol Lee),김대중(Daejoong Kim),김성규(Seongkyu Kim) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Aftertreatment systems are often said to be increasingly important in vehicle and engine design as emission standards are set tighter and, especially, it is being emphasized to optimize the novel metal distribution in the catalyst for maximizing the conversion performance as the novel metal cost and the oil cost are increasing significantly. : To maximize the conversion performance, dual brick catalyst system, high density front brick and low density rear brick, in one catalytic converter assembly had been used in the past however one brick zone coating system equivalent with dual brick system has been sued now a days. This study focuses on the optimization of zone depth and Platinum/Rhodium distribution per each zone of closed coupled catalytic converter using robust design tool to maximize the conversion performance. Static response, nominal the best, was characterized as parameter design and this study was executed by engine dynamometer testing capable to simulate the vehicle emission testing. This paper shows the procedure of optimum design of zoned catalyst.
착용형 시선 추적 장치의 스포츠 분야 적용을 위한 적외선 조명 변화 최소화에 관한 연구
이상철(Sangcheol Lee) 제어로봇시스템학회 2009 제어·로봇·시스템학회 논문지 Vol.15 No.3
In this paper, a simple optical method that uses an infrared(IR) cut filter is proposed to minimize variation of eye image by external infrared(IR) sources in a video based head mounted eye tracking system that is used in the field of sports. For this, the IR cut filter is attached to a head mount of the eye tracking system, and the camera with an IR LED is located between the IR cut filter and eye. In this structure, external IR is blocked by the IR cut filter, and the IR intensity on the eye can be controlled by the IR LED. Therefore, the illumination condition of the camera to capture the eye can be stable without being affected by external IR illuminations. To verify the proposed idea, variation of the eye image and intensity of the IR with/without the IR cut filter is measured under various illumination conditions. The measured data show that the IR cut filter method can block external IR effectively, and complex pupil detection algorithms can be replaced by a simple binarized method.