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- 저자 : 전우진 (검색결과 253 건)
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두개강내 지주막 낭종, 중대뇌동맥류 및 두개골종을 합병한 측뇌실 Xanthoma 1치험례 : Case Report
전우진,이훈갑,주정화 대한신경외과학회 1984 Journal of Korean neurosurgical society Vol.13 No.2
The authors introduce a extremely rare case of xanthoma in the lateral ventricle which combined -with the arachnoid cyst, aneurysm, and osteoma. This 11-year-old girl has been suffered the Rt. sided motor weakness, the slurred speech and seizures before 1 year. The simple skull AP view showed the elevation of left sphenoidal ridge bulging temporal bone (LT), the localized sclerotic margin and centrally osteolytic change in the Lt. Frontal bone. Brain computed tomogram revealed a relatively well circumscribed, moderately enhanced mass in the trigone of the left lateral ventricle accompaning with irregular low density in the left temporal lobe. At left carotid angiogram, multiple aneurysm of the Genu of the middle cerebral artery was found without spasm of adjacent vessels. The patient had operation for removal of the tumor. Arachnoid cyst and for wrapping of the Aneurysm. The pedunculated reddish white mass was completely removed. The patient had improvement and discharged without another neurologic deficits. The tumor mass was the Xanthoma.
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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
'스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.
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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머신러닝과 감성분석을 활용한 고객 리뷰 기반 항공 서비스 품질 평가
전우진,이예빈,금영정 한국전자거래학회 2021 한국전자거래학회지 Vol.26 No.4
The airline industry faces with significant competition due to the rise of technology innovation and diversified customer needs. Therefore, continuous quality management is essential to gain competitive advantages. For this reason, there have been various studies to measure and manage service quality using customer reviews. However, previous studies have focused on measuring customer satisfaction only, neglecting systematic management between customer expectations and perception based on customer reviews. In response, this study suggests a framework to identify relevant criteria for service quality management, measure the importance, and assess the customer perception based on customer reviews. Machine learning techniques, topic models, and sentiment analysis are used for this study. This study can be used as an important strategic tool for evaluating service quality by identifying important factors for airline customer satisfaction while presenting a framework for identifying each airline’s current service level. 국제 항공 시장이 꾸준히 성장함에 따라 항공업계의 경쟁이 더욱 심화되고 있다. 경쟁 우위의 원천을 얻기 위해 서비스의 품질 평가는 필수적이며, 이에 다양한 연구에서 고객 리뷰를 바탕으로 서비스 품질을 측정하는 시도를 지속해 왔다. 그러나 고객 리뷰 데이터를 기반으로 기대와 지각 수준의 차이를 파악하고 전략적 방향을 제시하는 연구는 미흡한 실정이다. 본 연구에서는 항공사 서비스를 대상으로 차원별 중요도를 머신러닝을 통해 측정하고, 차원별 지각 수준을 감성분석을 통해 분석한다. 차원별 중요도와 지각 수준의 결과를 활용하여 항공사별 서비스의 성과를 측정하기 위한 전략 매트릭스를 제시하고, 이를 통해 각 항공사의 품질 분석을 수행한다. 본 연구는 항공사의 고객만족을 결정하는 중요한 요인을 파악하는 동시에, 각 항공사의 현재 서비스 수준을 파악하는 틀을 제시함으로써 서비스 품질 평가의 중요한 도구로 활용될 수 있다.
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