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RISS 인기검색어
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- 저자 : Yong-kyu Yoo(유용규) (검색결과 3 건)
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9축 모션센서와 힘-감지저항센서 동기화를 이용한 비정상 보행 패턴 분석
유용규(Yong Kyu Yoo),원인식(In Sik Won),문상찬(Sang Chan Moon),양효실(Hyo Sill Yang),이순걸(Soon-Geul Lee),이원구(Won Gu Lee) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Abnormal gaits such as in-toeing gait and out-toeing gait have been known to cause various types of physiological disorders in human body. Therefore, many researches up to date have been dedicated to solve this issue. However, many of the previous researches have been limited in that they hardly considered a minimal use of sensors to analyze abnormal gaits, leading to a low efficiency due to unwanted power consumption. Here, we aimed to examine what parameters or axes of the sensors can be minimized to tell a minute difference between normal and abnormal gait patterns. For this purpose, we synchronized a 9-axes motion sensor (accelerator, gyroscope, and compass) with force sensing resistor (FSR) sensors to compartmentalize the valid measurement range between heel strike(initial contact of the foot) and toe off (final contact of the foot). Through this synchronization, we found out how the number of axes in sensors could be optimized for minimal power consumption which is necessary for manufacturing wearable healthcare devices at an affordable cost.
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장백 폭포에서 분리한 Acinetobacter koreensis sp. nov.의 보고
이하얀,유용규,서필수,이정숙,이근철,이상섭,Lee, Ha-Yan,Yoo, Yong-Kyu,Seo, Pil-Soo,Lee, Jung-Sook,Lee, Keun-Chul,Lee, Sang-Seob 한국미생물학회 2007 미생물학회지 Vol.43 No.1
JB10과 $JB15^{T}$ 균주들은 양강도 삼지연군의 북서부에 위치한 백두산에 있는 장려 폭포의 폭포수에서 분리되었다. 그람 음성의 호기성 균주로서, 약$0.9-1.6{\times}1.5-2.5\;{\mu}m$의 짧은 간균이었다. JB10, $JB15^{T}$ 균주들과 표준 균주들은 생리 생화학 특성 실험에서 서로 차이점을 보였다. JB10과 $JB15^{T}$ 균주들의 16S rDNA 염기서열을 분식한 결과 ${\gamma}-proteobacteria$에 속하였으며, Acinetobacter tandoii 4N13T (97.3%), Acinetobacter haemolyticus $ATCC17906^{T}$ (97.2%), Acinetobacter johnsonii $DSM6963^{T}$ (97.2%), Acinetobaoter junii $DSM6964^{T}$ (96.7%), Acinetobacter schindleri $LUH5832^{T}$ (97.0%) 및 Acinetobacter ursingii $LUH3792^{T}$ (96.6%)와 높은 유사도치 염기서열 상동성을 보여주었다. 그리고 이 외의 표준 균주들과는 93-96%의 염기서열 상동성을 보였다. 균체 지장산 분석 결과주요 지방산으로 $C_{18:1}\;{\omega}9c$와 $C_{16:1}\;{\omega}7c/C_{15:0}\;iso\;2OH$를 함유하고 있는 것을 확인하였으며, 흥미롭게도 $JB15^{T}$ 균주에서 $C_{19:1}\;iso\;I$이 검출되었다. 이상과 같이 생리 생화학적 특성, 16S rDNA 염기서열 분석 결과 및 균체 지방산분석 결과에서 선별된 JB10과 $JB15^{T}$ 균주들이 표준 균주들과는 다른 특성을 나타내는 것으로 확인되어 JB10 (=KEMC 52-093)과 $JB15^{T}$ ($=KEMC\; 52-094^{T}$) 균주들을 Acinetobacter koreensis sp. nov.로 동정하였다. Two isolates of genus Acinetobacter were obtained from Jang-Baek waterfall in North Korea. Morphological characteristics of the isolated 2 strains were Gram-negative, aerobic and rod shape bacteria. Physiological and biochemical characterization of the isolated 2 strains were some different aspect from those of type strains. 16S rDNA sequence analysis showed that the two isolates shared 99.9% sequence similarity. Strains JB10 and $JB15^{T}$ were shown to belong to the Gammaproteobacteria and showed the highest levels of sequence similarity to Acinetobacter tandoii $4N13^{T}$ (97.3%), Acinetobacter haemolyticus $ATCC17906^{T}$ (97.2%), Acinetobacter johnsonii $DSM6963^{T}$ (97.2%), Acinetobacter junii $DSM6964^{T}$ (96.7%), Acinetobacter schindleri $LUH5832^{T}$ (97.0%) and Acinetobacter ursingii $LUH3792^{T}$ (96.6%). The major cellular fatty acid in Acinetobacter type strains and isolated strains included $C_{18:1}\;{\omega}9c\;and\;C_{16:1}\;{\omega}7c/C_{15:0}\;iso\;2OH$. Eventhough it was ascertained that the isolated strains were closely related to genus Acinetobacter, physiological and biochemical characteristics and the result of the isolated strains 16S rDNA analysis indicate some different aspects from those of type strains of genus Acinetohacter It is considered that the isolated JB10 (=KEMC 52-093) and $JB15^{T}\;(=KEMC\;52-094^{T})$ strains be new species of genus Acinetobacter. We name it as Acinetobacter koreensis sp. nov.
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