• Title/Summary/Keyword: shin-huh

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Diozonides from Coozonolyses of Cyclodienes and Carbonyl Compounds

  • Park, Shin-Hee;Huh, Tae-Sung
    • Bulletin of the Korean Chemical Society
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    • v.23 no.3
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    • pp.423-426
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    • 2002
  • Treatment of conjugated cyclodienes (5a-5c) with excess ozone in dichoromethane in the presence of added carbonyl compounds (3) resulted to give the corresponding diozonides 10 and cross-ozonides 14. Similarly, ozonolysis of the nonconjugated 1,4-cyclohexadiene (6a) and 1,5-cyclooctadiene (6b) under same conditions afforded both diozonides 20 and cross-ozonides 14. On the other hand, Ozonolysis of bicyclo[2.2.0]hepta-2,5-diene (6c) in the presence of 3A provided the corresponding diozonide 19.

A Study on the Geometry of Chip Breaker of the Cut-off Tools Using Taguchi Method (다구찌 기법을 사용한 절단 바이트의 칩 브레이커 형상에 관한 연구)

  • Shin, Hyun-Soo;Huh, Yong-Jeong
    • Proceedings of the KAIS Fall Conference
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    • 2006.05a
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    • pp.112-115
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    • 2006
  • 본 논문에서는 무인 생산 공정의 선삭 가공 시 발행하는 칩의 처리에 관한 연구를 수행하였다. 선삭시 발생되는 칩은 부품의 정밀도와 표면 조도를 저하시키는 등 품질 저하와 함께 생산성을 저해하는 요소가 되기도 한다. 이러한 칩을, 칩 브레이커를 사용하여 작은 곡률 반경으로 절단함으로써 칩 제거를 효율적으로 제어한다. 그와 함께, 다구찌 기법을 적용하여 최적의 조건으로 칩 브레이커 형상 설계 인자를 도출하는데 그 목적이 있다.

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A Study on Anti-Vibration Materials for Roadbed (철도 노반재료의 정.동적특성 연구)

  • Shin, Min-Ho;Lee, Il-Wha;Lee, Sun-Bock;Kim, Su-Il;Huh, Young;Kim, Su-Sam
    • Proceedings of the KSR Conference
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    • 1998.05a
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    • pp.588-595
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    • 1998
  • The purpose of this study is to perform development of techniques for reduction of ground vibration caused by highspeed railway. At the first year, we have researched for the statically and dynamically characteristics of materials that could reduce the propagated ground vibration. The tire chip and blast furnace slag had been selected as the reduction material. And we have tested these materials by computer analysis.

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