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Azo색소(色素)와 양(陽)이온 계면활성제(界面活性劑)의 상호작용(相互作用)에 관한 연구(硏究)(II)
장재연,조영미,김박광,이왕규,Jang, Jae-Yeon,Cho, Yung-Mee,Kim, Bak-Kwang,Lee, Wang-Kyu 대한약학회 1984 약학회지 Vol.28 No.5
The interaction between azo dyes and cationic surfactant was studied by absorption spectroscopy and fluorescent Rayleigh scattering. In order to presume the structure of formed micelle, methyl orange and ethyl orange as azo dyes and cetyltrimethylammonium bromide (CTAB) as cationic surfactant were used. Infomations about interaction parameter including absorption maxima, optimal conditions, and intensity of fluorescent Rayleigh scattering were obtained. When azo dyes and CTAB are formed 1 : 1 complex, it showed the strongest intensity of fluorescent Rayleigh scattering. On going from mixed micelle to homomicell, It suggests successively several intermediate steps of complex structure which can be distinguished clearly from one another.
장재연,윤제용,김소연,조수남 대한상하수도학회 2001 상하수도학회지 Vol.15 No.5
The study of causal model explaining the effects of experience, information, and trust on the perception and acceptance of tap water was performed. The study surveyed a representative sample of the general Seoul citizen (response rate=40.1%), who consisted of 1,108 adults aged between 20 and 78. The data were analyzed using the structural equation modeling. Results suggested that trust on the management of tap water systems by government influenced the perception of risk and benefit significantly. Risk and bane fit perception influenced on the acceptance of tap water and finally on the behavior concerning tap water. Demographic and social statuses were also tested about the effects on the variables in the causal model.