• 제목/요약/키워드: Yeon Ju Hwan

검색결과 326건 처리시간 0.031초

Survival of Erwinia amylovora on Surfaces of Materials Used in Orchards

  • Choi, Hyun Ju;Kim, Yeon Ju;Lim, Yeon-Jeong;Park, Duck Hwan
    • 식물병연구
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    • 제25권2호
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    • pp.89-93
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    • 2019

  • Fire blight disease caused by the bacterium, Erwinia amylovora, was observed in apple and pear orchards in Korea in 2015. Since then, it has spread, sometimes over long distances to other orchards. Therefore, we examined the ability of E. amylovora to survive in soils and on the surfaces of common materials such as T-shirts, wrist bands, pruning shears, and rubber boots by both conventional PCR (cPCR) and quantitative PCR (qPCR) methods. E. amylovora was detected in all materials tested in this study and survived for sufficiently long periods to cause fire blight disease in new sites. Thus, based on the results of this study, sanitation protocols must be applied to equipment during orchard work.

  • https://doi.org/10.5423/RPD.2019.25.2.89 인용 PDF KSCI HTML

녹내장 임플랜트용 밸브 액추에이터의 제작 및 성능 평가 (Fabrication and Performance Evaluation of the Valve Actuator for Glaucoma Implant)

  • 배병훈;김낙훈;박기환;이상호;심태석;김용권;이연;기홍석;김선호
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2001년도 하계학술대회 논문집 C
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    • pp.1875-1877
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    • 2001

  • Glaucoma is an eye disease which is caused by abnormal high lOP (Intra Ocular Pressure). High lOP is caused by the aqueous humor which is produced consistently but not drained due to malfunction of the trabecular system which has a role of draining the aqueous humor into the venous system. Currently, there are some methods to treat glaucoma, Among these, the use of implants is increasing in these days due to many problems In other methods. However, conventional implants are passive implants and have critical disadvantage. Therefore, it is needed to develop an active implant which is composed of a valve actuator, pressure sensor, controller, and power supply. In this paper, we make experiment with the fabricated valve actuator in In-vitro experiment, and estimate the in-vivo result using the experimental result and investigate the possibility of the fabricated valve.

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