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미세입자, 휘발성유기화합물 차단을 위한 전기방사 창문 필터
김순호,한상일,Soon-Ho Kim,Sang-Il Han 한국화학공학회 2023 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.61 No.3
With the development of industry, fine dust is causing difficulties in various fields such as environment, health, and life, and a large amount of pollutants generated from human social activities are emerging as a serious environmental problem due to air pollution. Therefore, in this study, activated carbon was added to remove fine dust and volatile organic compounds by spinning cellulose acetate polymer fibers on a silicon support using the electrospinning method. By varying the activated carbon ratio and electrospinning time, the fine dust blocking effect and toluene adsorption performance were confirmed according to the activated carbon ratio and filter thickness. As a result, it was shown that the particles were effectively blocked with the increase in the electrospinning time due to the filter thickness increase. Adsorbed amount of toluene was increased with increase in activated carbon amount. Light transmittance was decrease with increase in electrospinning time, showing that there were light transmittance in filters electrospun for 20~30 minutes.
김순호,사현우 한독심리운동학회 2019 심리운동연구 Vol.5 No.2
The purpose of this study is to identify the trends of domestic research in motion space from a psychological movement perspective and provide basic data for movement space research. Accordingly, papers related to movement space published from 2007 to 2019 were collected and analyzed. According to the study, there were a total of 18 master's degree papers on movement space among dissertation papers, two doctoral dissertations, and a total of 42 papers on movement space among academic journal papers. The research method showed that the proportion of qualitative research was high, followed by quantitative research and literature research. The study on movement space accounted for a higher percentage of qualitative research than quantitative Based on the results of the research, the actual play space has not been actively researched and the importance of play space for children was verified once again through prior study. It is believed that detailed classification and research of these moving spaces should be done. 본 연구는 심리운동관점으로 본 움직임공간의 국내 연구동향을 파악하고 움직임 공간 연구의 기초자료를 제공하는데 목적이 있다. 이에 따라 2007년부터 2019년까지 발표된 움직임공간에 관련된 논문을 수집하여 분석을 하였다. 연구 결과, 학위논문 중 움직임공간에 관한 석사학위 논문은 총 18편, 박사학위논문은 2편, 학술지 논문 중 움직임공간에 관한 논문은 총 42 편이었다. 연구방법을 살펴본 결과 질적연구 비중이 높았으며, 양적연구, 문헌연구 순으로 나타났다. 움직임공간에 관한 연구는 양적연구보다 질적연구가 높은 비중을 차지하였다. 연구결과를 바탕으로 실제 놀이 공간에 대한 연구는 활발하게 진행되어 오지 못한 실정이고, 선행연구를 통해 다시 한번 어린이 놀이 공간의 중요성을 확인하였다. 이러한 움직임공간에 대한 세부적인 분류와 연구가 이루어져야 할 것으로 사료된다.
AC4C 합금 자동차 엔진 마운팅 부라켙의 스퀴즈 캐스팅에 관한 연구
김순호 신라대학교 자연과학연구소 2004 自然科學論文集 Vol.13 No.-
Alumium alloys castings are gaining increased acceptance in automotive and electronic industeries and squeeze casting is the most efficient method of manufacturing mass produced parts. This study has investigated microstructures and mechanical properties of A1-7.0Si-0.4Mg (AC4C)alloy which was fabricated by squeeze casting process for development of engine mounting bracket. The microstructure of squeeze tasted specimen was composed of eutectic structure alumimim solid solution and Mg_(2)Si precipitates. The tensile strength of as-solid solution treatment of A1-7.0Si-0.4Mg alloy revealed 298.5MPa. It was found that A1-7.0Si-0.4Mg alloy had good aging hardening effect.