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송인철,박태희,Song, In-Chul,Park, Tae-Hee 한국기술사회 2012 技術士 Vol.45 No.1
Recently human beings are experiencing fatal matters of environmental harm from enormous demolished concrete, even though waste concrete can get much more market value if recycled. The problem is that demolished concrete can not find the place where it can be used more economically and efficiently, but eventually can be spent worthlessly for landfill or road basement. Up to now, we can barely find the right place matching for structural performance in construction site with recycled concrete, even more, can not find another place to recycle this tremendous waste concrete. in addition it needs recycling information system between demanders and suppliers managed by government and other.
인공위성용 홀 추력기의 중성기체에 대한 분자동력학 시뮬레이션
송인철,배효원,박정후,이호준,이해준,Song, In-Cheol,Bae, Hyo-Won,Park, Chung-Hoo,Lee, Ho-Jun,Lee, Hae-June 한국진공학회 2010 Applied Science and Convergence Technology Vol.19 No.2
소형위성의 추력시스템으로 사용되어지는 홀 추력기의 중성 기체 시뮬레이션을 수행하였다. 홀 추력기의 채널 내부에서의 난반사효과 및 초기 가스의 온도, 그리고 채널의 길이 등을 변수로 하여 계산되어진 밀도, 압력, 속도, 온도를 분석 하였다. 시뮬레이션에서 얻어진 결과를 통해 홀 추력기의 방전 시뮬레이션의 정확성을 높이는 동시에 실제 시스템의 이해에 기여할 것으로 예상되어 진다. Neutral gas in a Hall-effect thruster in a small satellite is simulated using a molecular dynamics code. Investigated are neutral density, pressure, axial average velocity, and temperature for the variation of diffusive reflection ratio, initial gas temperature, and channel length. Expected through this research are improving of discharge simulation through the neutral simulation and understanding of real system.
6-Methylquinolinium chlorochromate and 6-Methylquinolinium dichromate에 의한 알코올류의 선택적 산화반응
양정성,이상배,박영조,송인철 慶南大學校 附設 基礎科學硏究所 1993 硏究論文集 Vol.5 No.-
New Cr(VI)-heterocyclic complexes, 6-methylquinolinium chorochromate(6-MQCC) and 6-methylquinolinium dichromate(6-MQDC) were synthesized by the reaction of 6-methylquinoline with chromium(VI) trioxide. Cr(VI)-heterocyclic complexes were non-hygroscopic and readily dissolved in water. Their structures were verified by IR spectra and elemental analysis. The abilities of 6-MQCC, 6-MQDC, for the oxidation of alcohols were examined in DMF, DMA and acetone. As a result, 6-MQCC, 6-MQDC, were found as efficient oxidizing agents for the conversion of benzyl, allyl, primary, and secondary alcohols(4-decanol) to the corresponding aldehydes or ketones.(80%-95%) 6-MQCC, 6-MQCC were found as efficient selective oxidizing agents benzyl and primary alcohols in the presence of secondary ones.