• Title/Summary/Keyword: 삼각고리화반응

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A Study on the Synthesis and Property of Norbornane Type Carbocyclic Compounds that Include 3-membered Fused Ring System (삼각고리를 포함한 Norbornane 골격을 가진 화합물의 합성 및 물성에 관한 연구)

  • Oh Chang-Ho;Han Jeong-Sik;Park Dai-In;Ryu Joong-Hyun;Cho Joon-Hyun
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • 2006.05a
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    • pp.202-205
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    • 2006
  • Some advanced nations have already developed and utilized high performance carbocyclic compounds as liquid fuel components. The common point of these compounds includes polycycles. We synthesized some promising compounds which include multiplex ring form. According to three kinds of cyclopropanation method, we could synthesize five target materials and measure their physical properties.

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Study on Properties of High Energetic and High Dense Cyclic Hydrocarbons by the Structure (고에너지 고밀도 고리탄화수소 화합물의 구조에 따른 물성 연구)

  • Cho, Joon-Hyun;Kwon, Tae-Soo;Jeong, Deok-Jin;Oh, Chang-Ho;Park, Dae-In;Han, Jeong-Sik
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • 2008.11a
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    • pp.463-466
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    • 2008
  • The weapon systems with a liquid propulsion engine have been used for various purposes and demands of the liquid fuel with variety of properties for its operational purposes and environment. The cyclic hydrocarbons including norbornane or dicyclopentane structures have many applications to the guided weapon systems due to the high density and high energy characteristics, also efforts have been given in many fields. In this study, the cyclic hydrocarbons that we designed and fabricated were investigated to obtain tendency on the structures.

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Theoretical Considerations on Analytical Framework Design for the Interactions between Participants in Group Argumentation on Socio-Scientific Issues (사회 속 과학 쟁점에 대한 소집단 논변 상호작용 분석을 위한 방법론 고찰)

  • Park, Jee-Young;Kim, Heui-Baik
    • Journal of The Korean Association For Science Education
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    • v.32 no.4
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    • pp.604-624
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    • 2012
  • This study aims to design a framework for analyzing group argumentation in terms of participants' interaction. Regarding the current group argumentation setting as argumentation on socio-scientific issues within participants who have had limited experience on group argumentation, the analytical framework was designed to explain (1) what was each participant's role on group argumentation, (2) how these roles were changed within each time of argumentation, and (3) how the patterns of interaction were changed through seven times of a series of argumentation on socio-scientific issues. Based on the literature review on analytical framework of argumentation in science education including the works on the structure of argumentation, the discourse formation through interaction, and the linguistic approach on participants' interaction, the current research framework was built. Showing the results of applying the designed framework on group argumentation as an example, strength of using the current designed framework was discussed.