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속리산국립공원에 방사된 꽃사슴(Cervus nippon)의 GPS collar를 이용한 행동권, 서식지 이용특성 분석<sup>1a</sup>
김규철 ( Gyu-cheol Kim ),이용학 ( Yong-hak Lee ),정대호 ( Dae-ho Jung ),김기윤 ( Ki-yoon Kim ),김용훈 ( Young-hun Kim ),한혜성 ( Hye-seong Han ),손장익 ( Jang-ick Son ),이주형 ( Ju-hyeong Lee ),이한웅 ( Han-ung Lee ),조선국 ( Seon 한국환경생태학회 2016 한국환경생태학회지 Vol.30 No.6
본 연구는 속리산국립공원에 재도입 방사된 꽃사슴(n=6)(외래도입종)의 생태 및 행동학적 특징을 밝히기 위하여 2012년 4월부터 2016년 8월까지 수행되었다. 분석된 꽃사슴(Cervus nippon)은 GPS Collar 발신기를 부착하여 포획된 원서식지에 재 방사하였으며, 연구기간 동안 수집된 1,385개의 위치 좌표를 이용하여 연간 행동권, 고도 등 서식지 이용특성을 분석하였다. 속리산국립공원에 재도입된 꽃사슴의 연구결과, 전체 행동권은 MCP 95% 2.24±1.50㎢(t=3.648, p<0.05), 핵심구역인 FK 50%에서 0.46±0.31㎢(t=3.666, p<0.05)로 나타났다. 암·수 연간 행동권은 MCP 95% 수준에서 암컷 1.53㎢, 수컷은 2.94㎢로 분석되었다. 꽃사슴의 서식지 이용 중 고도 400~500m, 경사도 30°~35°, 향 S(남향)를 평균적으로 이용하였고, 도로와의 거리는 0~100m, 수계와의 거리는 0~50m을 이용하였다. 본 연구를 통해 얻어진 자료는 외래도입종 꽃사슴에 대한 서식지 관리 정책 및 생태 등의 기초 자료로 활용될 것으로 기대된다. This study assessed the ecological and behavioral characteristics of the sika deer from April 2012 to August 2016. To obtain basic information on the behavioral patterns of the sika deer (Cervus nippon) including their annual home range, sika deer wearing GPS tracking collars were released into 1,385 locations at a different altitude around where they had been captured in Songnisan. The released individuals were studied through home range analysis. According to our observations, annual home ranges of the sika deer (n=6) is seen to be 2.24±1.50㎢ (t=3.648, p<0.05) of MCP 95% for the entire area of home range and 0.46±0.31㎢ (t=3.666, p<0.05)㎢ of FK 50% for the home range core area respectively. The annual home ranges of the sika deers by sex were 2.94㎢ for female and 1.53㎢ for male. This study is expected to provide basic data for habitat management and ecological study of sika deer and to contribute to the management of wild animals.
사중편심 버터플라이 밸브의 구조 안전성 및 유량계수에 관한 수치해석적 연구
김건호 ( Geon-ho Kim ),차종국 ( Jong-kook Cha ),김규철 ( Gyu-cheol Kim ),정대영 ( Dae-yeong Jeong ),이봉희 ( Bong-hee Lee ) 한국산업융합학회 2022 한국산업융합학회 논문집 Vol.25 No.2
Butterfly valves installed on ships use valves with up to triple offset to improve tightness. However, the triple offset valve has structural problems such as disc deformation and seat separation. Accordingly, interest in quadruple offset butterfly valves with added offset is increasing. In this study, the structural safety of the quadruple offset butterfly valve was examined through numerical analysis. In addition, we intend to evaluate the performance of the valve through flow coefficient analysis.
묏대추나무(Zizyphus jujuba Miller)의 器官分化에 미치는 培地造成 및 生長調節物質의 影響
朴在仁,金奎鐵 충북대학교 농업과학기술연구소 1999 農業科學硏究 Vol.16 No.-
This experimet was carried out to establish regeneration systems of Zizyphus jujuba Miller, which will be a fundamental tool for breeding of new cultivar of Zizyphus spp. through biotechnological techniques and for in vitro physiological researches. Explants such as cotyledon segments, hypocotyl segments, epicotyl segments, internodal segments and leaves were excised from in vitro grown sterile seedlings and cultured on Woody Plant Medium(WPM) and half strength Murashige Skoog Medium(1/2MS) containing 6 kinds of growth regulators BAP, kinetin, 2iP, zeatin 2,4-D and NAA at 5 levels of 0, 0.2, 0.5, 1.0, 2.0 mg/l respectively. After 6 weeks in culture, formation and growth of shoot, root and callus were investigated. All the five kinds of explants tested showed organogenetic potentials(both shoots and roots) and callus formation by the media and growth regulator regulations, but the regeneration rate and growth were varied with the factors above. The best results in shoot regeneration were obtained when epicotyl segments were cultured on 1/2MS containing 0.2 mg/l 2,4-D(40%). and better result on WPM containing 0.2 mg/l zeatin(30%). Roots were easily formed and grown when excized leaves were cultured on 1/2MS medium containing 1.0 mg/1 NAA, where regeneration rate was 90% average root number, 5.55. Of the basal media tested for shoot regeneration in case of cotyledon and epicotyl which showed better results. 1/2MS was more efficient than WPM from cotyledons, but vice versa from epicotyls. For root regeneration, WPM was better than 1/2MS from cotyledons but vice versa from leaves. Callus formation and growth was not affected by the basal media tested. Two auxins, NAA and 2.4-D supplemented to basal media, as we know, was effective for root regeneration and callus formation. But a strange result was obtained:2,4-D supplemented to 1/2MS showed better shoot regeneration rate from epicotyls than any cytokinins. NAA promoted root regeneration and growth from all the explants tested. Of the cytokinins tested BAP and zeatin were more effective than 2iP and kinetin in shoot regeneration. Zeatin was effective in shoot regeneration from cotyledons, epicotyls and internodes. From the above results, a protocol could be suggested that epicotyls are cultured on 1/2MS media containing 0.2mg/1 2,4-D for shoot regeneration and cultured on 1/2MS medium containing NAA for rooting. For callus formation explants are cultured on WPM containing 1.0mg/1 2,4-D and the calli formed could be used for shoot regeneration and for somatic embryogenesis by further culture.