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Youk, Jin-Soo,Kim, Young-Hee,Kim, Eun-Jin,Youn, Na-Jin,Chang, Suk-Kyu Korean Chemical Society 2004 Bulletin of the Korean Chemical Society Vol.25 No.6
Newly synthesized 8-hydroxyquinoline based benzothiazole derivative 2 showed a distinctive $Hg^{2+}$-selectivity over other transition metal ions in aqueous solution. The fluorescence emission at 455 nm of 2 was completely quenched upon interaction with $Hg^{2+}$ ions in dioxane-$H_2O$ system (9 : 1, v/v). The selectivity was decreased in the order of $Hg^{2+}\;>>\;Cu^{2+}\;>\;Cd^{2+}\;>\;Pb^{2+}\;{\thickapprox}\;Zn^{2+}\;{\thickapprox}\;Ni^{2+},\;and\;Hg^{2+}$ concentration dependent fluorescence quenching profile was observed in the presence of common interfering metal ions as background. The fluorescence behavior of 2 suggests that the prepared compound could be used as a fluorescent signaling subunit for the construction of new $Hg^{2+}$-sensitive ON-OFF type supramolecular switching systems.
아세틸렌 플라스마를 이용한 다이아몬드성 탄소 박막의 제작 및 특성
육도진(Do Jin Youk),강성수(Sung Soo Kang),이원진(Won Jin Lee) 한국안광학회 1998 한국안광학회지 Vol.3 No.1
The a-C:H films have been grown on the glass substrate by PECVD mathod, where plasma was generated with a 60Hz line power source. The carbonization is checked from peak intensities of D (sp³) and G(sp² peaks in Raman spectra. The hydronization and C-H bonding status in films can also be determined from FTIR results. Both the bonding strength of C-H and the ratio of sp³ to sp² in bonding are found to be slightly dependent of partial pressure of C₂H₂. Judging from above results, we can conclude that the best value for partial pressure of C₂H₂ in growing process of thick films is about 15%.
김영희,Jin-Soo Youk,So Hee Kim,장석규 대한화학회 2005 Bulletin of the Korean Chemical Society Vol.26 No.1
Solvatochromic fluorescence behavior of 8-aminoquinoline based benzothiazole derivative in varying solvent systems has been investigated. Benzothiazole appended 8-aminoquinoline 3 showed distinctive fluorescence color changes depending upon the solvent polarities and the fluorescence color changes occurred over relatively wide span in visible region from 486 nm to 598 nm which can be detected with naked eye. Compound 3 also exhibited significant spectral shifts in λem as a function of water composition in binary aqueous solvent systems. The changes are due to the specific interaction of 3 by hydrogen bonding with water as well as general solvent effect. The observed solvatochromic fluorescence characteristics of 3 could be used as a new probe for the micro-environmental polarity changes as well as a sensitive sensor for the determination of water composition in binary aqueous solutions.
Genetic Analysis and Event-Specific Detection of a CGMMV-CP Transgenic Watermelon Rootstock Line
Eun Soo Youk,In Soon Pack,Yu-Jin Kim,Won Kee Yoon,Chang-Gi Kim,Stephen B. Ryu,Chee Hark Han,Soon-Chun Jeong,Hwan Mook Kim 한국작물학회 2008 한국작물학회 학술발표대회 논문집 Vol.2008 No.10
Transgenic plants that over express virus coat protein genes have attracted particular interest from researchers, by virtue of their tolerance to virus infection. The transgenic watermelon rootstock analyzed in this study was established by introducing CGMMV coat protein (cp) under the control of CaMV 35S promoter and NOS terminator (Park et al., (2005) Plant Cell Rep. 24: 350-6). The primary objective of this study was to determine the copy number and integration site of the transgene element, in order to develop detection techniques required for monitoring of the transgenic watermelon rootstock. The Southern blot analysis indicated that a single copy of CGMMV-cp gene was inserted into the genome of transgenic watermelon rootstock. We also identified the genomic sequences flanking the integration site of the transgene by inverse PCR analysis. In an effort to find a sequence usable as an internal positive control for the screening of the watermelon and watermelon rootstock, we found that the Sat and DIP-1 genes appears as one copy within their genomes and is watermelon rootstock- and watermelon-specific. The information of the integrated site and the internal positive control sequence was used to establish a new event-specific PCR-based detection method. In addition, mRNA and protein expression level of the transgene in the transgenic watermelon rootstock and grafted watermelon were investigated. The expression of both mRNA and protein of CGMMV-CP was not detected in the transgenic watermelon rootstocks and watermelons, suggesting that the movement of transgene products from transgenic rootstock to watermelon does not occur at our detection level.
강성수,육도진,성덕용,이원진 대구산업정보대학 2002 논문집 Vol.16 No.-
The spherical aberration was investigated with the different surface curvatures of meniscus lens. An incident ray with variable height from the optical axis shows different values of spherical aberration. Therefore, our results reveal the dependence of aberrations on surface curvatures and concluded that the aberration can be reduced by adjusting lens shapes.
이원진,원찬희,마기중,성덕용,강성수,육도진,박혜정 한국보건의료인국가시험원 2004 보건의료교육평가 Vol.1 No.1
This study shows the optician' s job analysis, some questionaire and their analysis. Job description drafed, the standard of questionaire was fixed. Job description is establised on the results of the job analysis by DACUM( Developing A Curriculum Method). The job description formed above 2.15 referred to the results of survey of the importance and perfomance frequency of the job. These elements made a draft of drawing up standard of the Optician National Licensing Examination by Job Analysis.