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오우석,박윤관,정용구,정홍섭,서중근,이훈갑,주정화,이기찬 대한신경외과학회 1991 Journal of Korean neurosurgical society Vol.20 No.7
The authors dersibe two cases of moyamoya-like disease associated with intracranial aneurysm. Moyamoya like disease, rare variant of moyamoya disease, has a normal unilateral carotid system. There are only few cases reported in the world literature of moyamoya-like disease associated with intracranial aneurysm. The radiololgical fearures and the management of these cases are discussed.
뇌경색 및 뇌부종에 미치는 Superoxide Dismutase와 Allopurinol의 효과에 대한 실험적 연구
오우석,박윤관,정용구,정흥섭,서중근,이훈갑,주정화,이기찬 대한신경외과학회 1991 Journal of Korean neurosurgical society Vol.20 No.4
The authors have investigated the hypothesis that ischemic injury could be attenuated by xanthine oxidase inhibitor(Allopurinol) and superoxide dismutase(SOD). This study used rat MCA model. Each animal was assigned to four groups which was composed with control group, allopurinol pretreated group(50mg/㎏. I.P single). SOD pretreated group(16.000 I.U/㎏ I.V q 15min for 4hours) and combined pretreatment group. Oxygen derived free radicals have been implicated in various pathological conditions including ischemia. Xanthine oxidase serve as a source of oxidizing agents such as superoxide radical and hydrogen peroxide. The superoxide flux in normal cells appears to have necessitated the development of SOD, which scavenges the superoxide by dismutation. Infarcted area was measured by computerized morphometric analysis after triphenyl tetrazolium chloride staining, infarcted area was reduced in SOD treated group(p= 0.005) and SOD. allopurinol combined group(P= 0.035). Brain edema was measured by gravimetric method. And it was reduced in Allopurinol treated group(P= 0.001) and SOD allopurinol combined group (P<0.001) Thus it was revealed that ischemic injury might be reduced by either decrease of production or increase of scavenger and the combination of two should be more efficious.
고압나트륨 램프와 안정기를 위한 고장 감시 시스템의 실현
오우석,김규식 서울시립대학교 산업기술연구소 1998 산업기술연구소논문집 Vol.6 No.1
In this paper, we implemented the failure detecting and monitoring system for high-pressure natrium lamps and ballasts. The hall CTs of the local detecting system measure the current flowing into natrium lamps via ballasts and ascertain whether the natrium lamps or ballasts are out of order or not. These test data are transmitted to the main monitoring system. So, we can see the status of the natrium lamps or ballasts promptly.