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Chamber System을 이용한 조선왕조실록의 미세유출가스 분석
강영석,서진호,Kang, Yeong-Seok,Seo, Jin-Ho 국립문화재연구소 2010 保存科學硏究 Vol.31 No.-
The Annals of the Joseon Dynasty is one of the World Heritage which should be conserved well. However, some of wax treated volume of the Annals of the Joseon Dynasty have damaged seriously. Currently a variety of efforts to conserve and restore the injured volumes are continued and many studies about the aging mechanism of the wax treated volume have being progressed. The analysis of VOCs (Volatile Organic Compounds) emitted from paper cultural heritage is one of the methods to understand the degradation pathway of paper cultural heritage. The analysis of VOCs emitted from paper cultural heritage has been mainly conducted by SPME (Solid Phase Microextraction) method. SPME is potable and simple method but it is difficult to collect all VOCs emitted from a book such as the Annals of Joseon Dynasty. The dynamic chamber system has generally used to do analysis of VOCs emitted from the building materials, furniture and electric appliances. The chamber system is possible to do quantitative and qualitative analysis by a continuous $N_2$ gas flow and the proper chamber which is able to gather all VOCs emitted from the Annals of the Joseon Dynasty. In this study, the most material among detected VOCs was Naphthalene. Naphthalene has used to prevent organic cultural heritage from being damaged by various microbes for a long time. Apart from Naphthalene, main VOCs were Acetic acid, 2-Chloroethanol, 2-Bromoethanol, Furfural, 1-Methylnaphthalene, Azulene, and 2,4-Dioctylphenol. Of these VOCs, Furfural especially was known for a marker which represents a different emission rate according to the aging level.
등속성 근관절 기능과 근피로도에 근거한 사이클 선수의 근력 불균형 및 페달링 파워에 관한 연구
강영석(Kang, Young-Seok),김정훈(Kim, Jung-Hoon) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.2
The main purpose of this study was to investigate bilateral muscle imbalance based on isokinetic muscle strength in knee and muscle fatigue in elite cyclists observed by electromyographic analysis measured on Wingate test. In doing so, we also found out the corelationship between isokinetic muscle strength and pedaling power. Six elite cyclists were recruited and isokinetic knee and lumbar extension and flexion were measured at 60 degree per sec and muscle fatigue pattern during Wingate test was analyzed to see if any muscle asymetry exists between dominant and non-dominant muscle strength. As a result paired t-test, there was no difference in muscle strength in knee extension and flexion between dominant and non-dominant even though subtle difference in terms of Limb Symetry Index (LSI) was observed. No difference in muscle fatigue pattern in dominant and non-dominant leg observed in Wingate test. Therefore, cyclists involved in cyclic exercise in which right and left limb are relatively uniformly recruited tend to have less or little muscle asymetry between dominant and non-dominant limb.