• Title/Summary/Keyword: chemical

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Sulfonated Poly(styrene-divinyl benzene)/PTFE Composite Membranes for Fuel Cell (술폰화 폴리스틸렌-디비닐벤젠/테플론 복합막의 연료전지 특성 연구)

  • Shin, Jeong-Pil;Kim, Jeong-Hoon;Park, In-Jun;Lee, Soo-Bok;Seo, Dong-Hak
    • Proceedings of the Membrane Society of Korea Conference
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    • 2004.05b
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    • pp.65-68
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    • 2004
  • Proton-exchange membranes have attracted much attention in the past few decades due to their important application in fuel cell systems. The mainly used proton-exchange membranes are perfluoropolymers such as DuPont's Nafion$^{(R)}$ and Asahi Chemical's Aciplex$^{(R)}$ because of their high performance including high proton conductivity & mechanical strength, and excellent thermal & chemical stability.(omitted)ted)

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The Role of Korea Chemical Bank in "Hit to Lead" process of Drug Discovery

  • Kim, Sun-Woo;Kim, Dong-Wook;Kim, Sun-Ho;Choi, Yeon-Joo;Kim, Joo-Young;Han, Mi-Jung;Kim, Oke-Kil;Kil, Kyong-Ok;Kim, Sung-Soo
    • Proceedings of the PSK Conference
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    • 2003.04a
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    • pp.249.1-249.1
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    • 2003
  • The Korea Chemical Bank (KCB) has more than 80,000 compound collections. provided from many companies, academies and institutes. KCB has supported high-throughput screening (HTS) against 80 biological targets and identified a number of hits over 20 targets. These hits were first validated by confirming the purity and novelty of anticipated compound. We also determined their physiochemical properties. (omitted)

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Hybrid Operational Concept with Chemical Detection UAV and Stand-off Chemical Detector for Toxic Chemical Cloud Detection (화학오염운 탐지를 위한 접촉식 화학탐지기를 탑재한 무인기와 원거리 화학탐지기의 복합 운용개념 고찰)

  • Lee, Myeongjae;Chong, Eugene;Jeong, Young-Su;Lee, Jae-Hwan;Nam, Hyunwoo;Park, Myung-Kyu
    • Journal of the Korea Institute of Military Science and Technology
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    • v.23 no.3
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    • pp.302-309
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    • 2020
  • Early-detection and monitoring of toxic chemical gas cloud with chemical detector is essential for reducing the number of casualties. Conventional method for chemical detection and reconnaissance has the limitation in approaching to chemically contaminated site and prompt understanding for the situation. Stand-off detector can detect and identify the chemical gas at a long distance but it cannot know exact distance and position. Chemical detection UAV is an emerging platform for its high mobility and operation safety. In this study, we have conducted chemical gas cloud detection with the stand-off chemical detector and the chemical detection UAV. DMMP vapor was generated in the area where the cloud can be detected through the field of view(FOV) of stand-off chemical detector. Monitoring the vapor cloud with standoff detector, the chemical detection UAV moved back and forth at the area DMMP vapor being generated to detect the chemical contamination. The hybrid detection system with standoff cloud detection and point detection by chemical sensors with UAV seems to be very efficient as a new concept of chemical detection.