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Colour Change Redox Behaviour of the 1,3-Squaraine Dyes
박수열,오세화 한국공업화학회 2002 한국공업화학회 연구논문 초록집 Vol.2002 No.0
The 1,3-bis(4-aminoaryl)squaraines showed colour change behaviour, they were found to undergo reduction with sodium borohydride in solution to give colourless leuco compounds, which oxidised readily in air back to the coloured squaraine dye.We have investigated this possibility, and have found that reduction can, in most cases, be achieved readily in organic solvents with sodium borohydride, and moreover, the resultant colourless reduced species (leuco dyes) are generally chemically stable and can be oxidised back to the coloured dye with air or common inorganic oxidants. This meant that the 1,3-squaraines could be used as redox indicators, with possible functional applications in enzyme assays, oxygen detection, or reprographic systems, and thus the chemistry of the leuco-1,3-squaraines was investigated in detail in order to determines their potential value in such areas.
사이버-물리 시스템의 보안 프레임워크 개발을 위한 보안 요구사항 분석 연구
박수열,최욱진,정보흥,김정녀,김주만,Park, Soo-Youl,Choi, Wook-Jin,Chung, Bo-Heung,Kim, Jeong-Nyeo,Kim, Joo-Man 대한임베디드공학회 2012 대한임베디드공학회논문지 Vol.7 No.5
A cyber-physical system(CPS) is a collection of cyber and physical components that interact with each other to achieve a particular application. Here, the CPS is emerged the reliability and security problems. Particularly, the defect of reliability in the data/control transmission under the CPS can lead to serious damage. We discuss the reliability and security problem on CPS architecture. Then we would suggest the considerations of cyber security in industrial control systems built with CPS.