• Title/Summary/Keyword: university system

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Binding Affinities of Carbohydrate-Conjugated Chlorins for Galectin-3

  • Park, Young K.;Bold, Bayarmaa;Cui, Bing Cun;Bai, Jin Quan;Lee, Woo-Kyoung;Shim, Young-Key
    • Bulletin of the Korean Chemical Society
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    • v.29 no.1
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    • pp.130-134
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    • 2008
  • Carbohydrate-conjugated chlorins were synthesized for use as biosensors for the detection of the galectin-3 cancer marker. We used ELISA, SDS-gel electrophoresis, and Bradford assays to examine the binding of galectins to d-(+)-galactose- and b-lactose-conjugated chlorins. The binding affinities of these conjugated chlorins for galectin-3 were quantified using fluorescence spectroscopy. The fluorescence emission of the carbohydrate-conjugated chlorins decreased as the amount of galectin-3 in the binding reaction increased over a limited concentration range, indicating that carbohydrate-conjugated chlorins are potentially useful fluorescence biosensors for the galectin-3 cancer marker.

Evaluation of the characteristics of the reflection plate to measure defects in the invisible area using infrared thermography

  • Kim, Sang Chae;Park, Il Cheol;Kang, Chan Geun;Jung, Hyunchul;Chung, Woon Kwan;Kim, Kyeong Suk
    • Nuclear Engineering and Technology
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    • v.52 no.4
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    • pp.856-862
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    • 2020
  • Defect inspection system for industrial applications takes the important portion. Non-destructive inspection method has been significantly improved. Infrared thermography, as one of method for non-destructive inspection, can provide relatively precise data and quick inspection time. This study, it was performed to measure defect according to the measurement limit of the non-visible areas such as the back surface of the pipe using reflection plate using reflection plate based on Infrared thermography. The materials of the reflection plate were determined in consideration of the space limitation and the thermal characteristics, and defects were detected by the manufactured reflection plate. Detection of defect in non-visible area using the candidate materials for reflection plate was conducted.

A driving power supply unit design of the track special vehicle considering the urban railway underground environment (도시철도 지하환경을 고려한 궤도특수차의 주행동력장치 설계 검토)

  • Lee, Jae-Bong;Na, Youn-Il;No, Kyung-Won;Seo, lL-Kwon;Lee, Hwan;Kim, Yang-Soo
    • Proceedings of the KIEE Conference
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    • 2015.07a
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    • pp.1571-1572
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    • 2015
  • 기존 궤도특수차는 디젤유를 사용하기 때문에 도시철도 지하환경을 오염시키고 유해한 배기가스가 인체에 악영향을 준다. 따라서 경제성이 우수한 친환경적인 하이브리드형 궤도특수차를 개발하기 위해 이에 따른 궤도특수차의 주행동력장치에 대한 설계조건을 규명하고자 한다.

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Efficient Synthesis and in vitro PDT Effect of Purpurin-18-N-Aminoimides

  • Cui, Bing Cun;Cha, Min-Uk;Li, Jia Zhu;Park, Ho-Sung;Yoon, Il;Shim, Young-Key
    • Bulletin of the Korean Chemical Society
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    • v.31 no.11
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    • pp.3313-3317
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    • 2010
  • A simple and efficient synthetic route for making purpurin-18-N-aminoimides is described. The purpurin-18-Naminoimides are obtained by treatment of purpurin-18 methyl ester with various amines. These new compounds have long wavelength absorptions in the range of 706 - 711 nm. In preliminary screening, the purpurin-18-N-aminoimides have shown promising photosensitizing activity for the cancer cell by in vitro study in photodynamic therapy.

An Algorithm for Improving Hierarchical Routing in ZigBee Networks (ZigBee 네트워크의 계층적 라우팅의 성능 향상을 위한 알고리즘)

  • Ha, J.Y.;Shin, S.Y.;Choi, J.Y.;Lee, J.W.;Kim, N.H.;Kwon, W.H.
    • Proceedings of the IEEK Conference
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    • 2006.06a
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    • pp.11-12
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    • 2006
  • An algorithm to improve the efficiency of the hierarchical routing in ZigBee Networks is proposed. By forwarding the data to the nearest neighbor in the hierarchy, more efficient path can be achieved without any control and memory overhead. Simulation results shows the proposed algorithm provides about 20% shorter path.

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Topology of High Efficiency Power Conversion with Fuel Cell Generation System (고효율 전력변환장치를 사용한 연료전지 시스템의 토폴로지)

  • Mun, S.P.;Suh, K.Y.;Lee, H.W.;Kwon, S.K.;Nakaoko, M.;Shin, H.B.
    • Proceedings of the KIEE Conference
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    • 2005.10c
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    • pp.329-333
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    • 2005
  • In this study paper, a 3[kW] Fuel Cell Generation (FCG)system with Fuel Cell(FC)simulator has been proposed. The developed FC simulator generates the actual voltage and current output characteristics of the Proton Exchange Membrane Fuel Cell (PEMFC), so that the overall performance and the dynamics of the proposed system could be effectively examined and tested. In this paper, at first, the system configuration and operational principle of the developed FC simulator has been investigated and the design process of the FCG system is explained in detail. In addition, the validity of the proposed system has been verified by the informative simulation and experimental results.

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