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도종환(Do Jong-hwan) 한국아동청소년문학학회 2007 아동청소년문학연구 Vol.- No.1
This paper aims to illuminate the life of Soon-Chul Jung who was the precursor of modern children’s song movement and his achievements as a children culture campaigner and also his songs. Through the Chundo religion and media organizations, we could contact his bereaved family and could obtain a small but basic data. We could luckily find his writings from 『Children』 magazines. We could understand his mental status in his childhood, and could confirm that he was a great music teacher who applied the modernized music education earlier than any others. Besides, though he was an important person in the early children culture movement history being no less weight than Jung-Hwan Bang, he is not being adequately appraised. However, this paper is merely a beginning level of paper about a misfortunated composer, Soon-Chul Jung who lived in the period of Japanese colony, separation and the Korean War. With further studies about his life, his life and achievements should be re-lighted. Also, more studies focusing on musical features like studies about his children’s song, the status of his children’s songs in our modern music history and the comparison study with other musicians in the same period should be carried out. In addition, his works after abducted to North Korea should also be researched and added later on.
자동차 엔진 개스킷용 아크릴 고무의물리적 특성과 수명 예측에 관한 연구
이형석 ( Hyung Seok Lee ),도종환 ( Jong Hwan Do ),안원술 ( Wonsool Ahn ),김철 ( Cheol Kim ) 한국고무학회 2012 엘라스토머 및 콤포지트 Vol.47 No.3
자동차 엔진 개스킷용 아크릴 고무(ACM)의 재료 특성과 수명 예측에 관하여 연구하였다. 클로린 가교사이트를포함하는 ACM (Chlorine Cure-Site ACM)과 카르복실기 가교사이트를 포함하는 ACM (Carboxyl Cure-SiteACM)을 이용하여 최적상태의 배합물을 제작하여 특성을 살펴보았다. 엔진용 개스킷의 주요한 특성인 열과, 엔진오일에서의 압축영구줄음율을 시험 평가한 결과 Carboxyl Cure-Site ACM 배합물이 상대적으로 더 우수한 것으로나타났다. Carboxyl Cure-Site ACM 고무 재료에 대한 수명을 예측하기 위해 가속열노화시험을 수행하여 시간-온도 환산식인 아레니우스(Arrhenius) 관계식을 구하였다. Material characteristics and the prediction of life time of polyacrylic rubber (ACM) for automotive engine gasket were studied. Two kinds of ACM rubber compounds, having chlorine cure-site and carboxyl cure-site, were madewith optimum formulations and the properties of each materials were examined. As a test results for the thermal propertiesand compression set, which are very important in the application for the automotive engine gasket, the compound usingACM with carboxyl cure-site was evaluated as having a better characteristics than that of ACM with chlorine cure-site.Arrhenius relationship based on time-temperature superposition principle (TTSP) was obtained through the accelerated heataging test to predict the useful life-time for the compound using ACM with carboxyl cure-site.