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손상 척수의 Lipid Peroxidation과 유수신경섬유의 미세구조에 미치는 Naloxone의 영향
전우진,서중근,정용구,박윤관,정흥섭,이훈갑,이기찬,주정화 대한신경외과학회 1988 Journal of Korean neurosurgical society Vol.17 No.6
Spinal Cord contusions in cats were produced experimentally by impact injuries to the surgically exposed cord at the second lumbar vertebral level. As a step in the investigation of the possible effect of spinal cord trauma on biochemical and ultrastructural changes in the injured cord, activities of lipid peroxidation were measured in the frozen-dried sample of the spinal cord and the fine structure of the myelinated nerve fiber in the white matter were observed before and after the cord injury. An increase of lipid peroxidatin level was found as early as 30 minutes after the injury and the highest concentration was reached at 4 hours of injury. Fine structures of the myelinated nerve fibers were changed progressively with the lapse of time after the injury. By 1 hour after the contusion the myelinated nerve fibers showed moderately enlarged periaxonal space, attenuation and disarray of the myelin sheaths. By 4 hour after the contusion, there appeared disarray of the myelin sheaths, greatly enlarged periaxonal space and irregulary contoured axons. The effect of naloxone of the lipid peroxidation and fine ultrastructure of the myelinated nerve fibers were studied, and the results of this study suggested that naloxone have a beneficial effect on the change in lipid peroxidation and the preservation of the myelinated nerve fibers after injury.
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전우진,동희진,신재훈,김일용,Hungwui Ho,오승현,윤영민,최양규,서준교,남기환,김형진,조성범,성제경 대한수의학회 2015 Journal of Veterinary Science Vol.16 No.4
A novel Helicobacter species was identified from the gastrointestinal tract of the Korean striped field mouse (Apodemus agrarius). Biochemical testing, ultrastructure characterization, and 16S rRNA gene sequence analysis suggested that this bacterium represents a distinct taxon. The bacterium was positive for urease activity, susceptible to cephalothin and nalidixic acid, and weakly positive for oxidase and catalase activity. Electron microscopy revealed that the bacterium has spirally curved rod morphology with singular bipolar nonsheathed flagella. Genotypically, the isolated bacterial strains (YMRC 000215, YMRC 000216, and YMRC 000419) were most closely related to a reference strain of Helicobacter mesocricetorum (97.25%, 97.32%, and 97.03% 16S rRNA sequence similarities, respectively). The 16S rRNA sequences of these strains were deposited into GenBank under accession numbers AF284754, AY009129, and AY009130, respectively. We propose the name Helicobacter apodemus for this novel species.
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PaaS 클라우드 컴퓨팅을 위한 컨테이너 친화적인 파일 시스템 이벤트 탐지 시스템
전우진,박기웅 한국차세대컴퓨팅학회 2019 한국차세대컴퓨팅학회 논문지 Vol.15 No.1
최근 컨테이너 기반의 PaaS (Platform-as-a-Service)를 구축하는 트렌드가 확대되고 있다. 컨테이너 기반 플랫폼 기술은 클라우드 컴퓨팅을 구축하기 위한 하나의 주요 기술로써, 컨테이너는 가상 머신에 비해 구동 오버헤드가 적다는 장점이 있어 수백, 수천 대의 컨테이너가 한 대의 물리적 머신에서 구동될 수 있다. 하지만 이러한 클라우드 컴퓨팅 환경에서 구동되는 다수의 컨테이너에 대한 스토리지 로그를 기록하고 모니터링하는 것은 상당한 오버헤드가 발생한다. 따라서 본 논문에서는 클라우드 컴퓨팅 환경에서 구동되는 컨테이너의 파일 시스템 변경 이벤트를 탐지할 때 발생하는 두 가지 문제점을 도출하고, 이를 해결하여 PaaS 형태의 클라우드 컴퓨팅 환경에서 컨테이너 파일 시스템 이벤트 탐지를 위한 시스템을 제안하였다. 성능 평가에서는 본 논문에서 제안한 시스템의 성능에 대한 세 가지 실험을 수행하였고, 본 논문에서 제안한 모니터링 시스템은 컨테이너의 CPU, 메모리 읽기 및 쓰기, 디스크 읽기 및 쓰기 속도에 아주 미세한 영향만을 발생시킨다는 것이 실험을 통해 도출되었다. Recently, the trend of building container-based PaaS (Platform-as-a-Service) is expanding. Container-based platform technology has been a core technology for realizing a PaaS. Containers have lower operating overhead than virtual machines, so hundreds or thousands of containers can be run on a single physical machine. However, recording and monitoring the storage logs for a large number of containers running in cloud computing environment occurs significant overhead. This work has identified two problems that occur when detecting a file system change event of a container running in a cloud computing environment. This work also proposes a system for container file system event detection in the environment by solving the problem. In the performance evaluation, this work performed three experiments on the performance of the proposed system. It has been experimentally proved that the proposed monitoring system has only a very small effect on the CPU, memory read and write, and disk read and write speeds of the container.
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전우진,정재교,전성준,윤대현,임윤식,석종민,Jeon, Woo-Jin,Jeong, Jae-Kyo,Chun, Sung-Joon,Yoon, Dae-Hyun,Lim, Yoon-Sik,Seok, Jong-Min 대한디지털의료영상학회 2014 대한디지털의료영상학회논문지 Vol.16 No.1
This study, was conducted to find out the correlation factors of anxiety of the patients during MRI exam on the claustrophobia. This study conducted a survey targeting those korea auxiliary police and combat auxiliary police patients who were admitted to the National Police Hospital over a period from January 2 to December 24, 2013 to investigate their degree of claustrophobia. In study result, sufficient explain before exam was helpful and decrease anxiety. However, they felt more anxious about limited spare, and when the entered a bore. Symptoms of instability and fear were stuffy, sweat, dyspnea, palpitation those are ascending rank of frequency.
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Airborne bacteria inactivation with low ozone production by the humidity control
전우진,최준 한국진공학회 2021 한국진공학회 학술발표회초록집 Vol.2021 No.2
Dielectric barrier discharge(DBD) is used for bacteria sterilization or disinfection in the medical field, but there is a critical limitation that high ozone generation can cause harmful effect for human. This paper proposes a new system to inactivate the airborne bacteria with lower ozone generation than before by the humidity control[1]. The humidity was controlled by nebulizer and dehumidifier. As the humidity increased, when comparing the relative humidity 30% to 70%, the ozone generation decreased 10 times and survival rate of bacteria decreased by 50%.
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