http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
전윤흥(Yunheung Jeon),박시훈(Sihoon Park),최한수(Hansu Choi),박준관(Jungwan Park) 한국신재생에너지학회 2014 신재생에너지 Vol.10 No.4
In this study pressure and shaft torque pulsation were measured with variation of head and flow during the model test for a 15 MW Francis Turbine. Pressure pulsations were measured at the inlet of the spiral casing and 4 points in the cone of the diffuser and shaft torque pulsation at the upper position of the turbine. The maximum amplitude of pressure pulsation appeared 2.03% of the maximum rated head with the frequency of 25% of the rated revolution and at the guide vane opening of 10°. Shaft torque pulsation appeared 0.01% of the rated shaft torque, fairly low value. Air was admitted through the cone and pressure pulsation gradually decreased with increase of air flow and kept nearly constant after 5% of the rated flow. A new Francis turbine of which specific speed is 115 m-kW had been designed to rehabilitate the old one and the model test was performed at EPFL. The commercial code, STAR-CCM<SUP>+</SUP> was used for numerical simulation of flow.
Gilsang Jeong(정길상),Bo-Yeon Hwang(황보연),Young Soo Kwon(권영수),Seon Deok Jin(진선덕),Sunghoon Choi(최성훈),Miran Kim(김미란),Hansu Choi(최한수),Jin Young Park(박진영) 한국조류학회II 2018 한국조류학회지 Vol.25 No.2
괭이갈매기는 동북아시아에서 가장 흔한 갈매기류 중 하나이며, IUCN에 의하면 LC(Least Concern)로 분류되어 있다. 인간의 활동이 해양환경에 영향을 미친 이래 괭이갈매기는 해양 환경오염과 서식지 교란의 중요한 지표종이 되었다. 본 연구에서 괭이갈매기가 6개의 미토콘드리아 CO1 하플로타입(haplotype)이 있고, 이중 일부 희귀 haplotype은 지리적으로 제한되어 나타난다는 사실을 확인하였으며, 이러한 현상은 본 종이 멀리 분산하지 않음을 암시한다. 본 논문은 한국에서 괭이갈매기를 대상으로 한 첫번째 개체군 유전적 연구결과이며, 환경지표종으로서 모니터링과 유전학적 연구의 기초자료가 될 것이다. The Black-tailed gull (Larus crassirostris) is one of the most common gull species in the Northeast Asia and classified as LC (least concern) in the IUCN Red List. The bird has become a useful indicator for marine environmental pollution and habitat disruption, since the human activities impacted marine environments. Here we show that the black-tailed Gull has 6 haplotypes and some rare haplotypes are locally limited implying that the bird may not disperse far. This study may be the first report on population genetic study of Black-tailed Gull in Korea and could be used as the baseline data for monitoring and genetic study on the bird as an environmental indicator.