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민영택(Min Young Taek),김성렬(Kim Sung Yeol),고승영(Ko Seung Young),김영상(Kim Young Sang) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
Recently, the railroad route plan is trying to minimize the damage of the local resident which is caused by railroad construction. For this reason, reducing the banking height of soil roadbed, lowering the bridge girder height of a solid intersection and a part of cross river, the through bridge type which can achieve a required span length must apply. The representative through bridges of railroad are arch bridges, truss bridges and plate girder bridges, the through plate girder bridge of variable section can apply that the span length of these bridges is about 30~50m, namely, middle span length bridge types, and that can satisfy structural capacity and beauty of railroad at the same time. This paper introduces plan and design process of the Su-eo cheon bridge applied by a through plate girder bridge type of the Jinju-Gwangyang double track 6th construction ordered at Korea Rail network Authority in 2005.
물푸레나무속 수형목의 (秀型木) 수심에 의한 지조맹아 (枝條萌芽) 발생력과 이를 이용한 녹지삽목 (綠枝揷木) 증식시험
한상돈(Sang Don Han),홍성호(Sung Ho Hong),민영택(Young Taek Min),김영모(Young Mo Kim),김홍은(Hong Eun Kim) 한국산림과학회 1994 한국산림과학회지 Vol.83 No.2
As a vegetative propagation method for ash species, which is a dioecism and a long cycle of fructification, cut-stem was soaked in water to induce adventitious sprouts, and 2-year-old ash seedling was cut in a nursery to induce adventitious sprouts. We obtained the 1,019 adventitious sprouts from branches of 101 plus trees througout the country. The mean octet-age is 48. There is not a correlation between octet ages and production of adventitious sprouts. These sprouts were placed in a cutting bed for rooting. Root ability varied with environmental factors of cuttings. The best rooting(87%) resulted from cutting performed in a vinyl-plastic greenhouse. Rooting was better on perlite+peat moss(2 : 1) medium than other media tested. The rooting ability was generally higher in 2-year-old octet than plus tree octet . In the root development of cuttings the non-container cuttings was better than container cuttings.