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오광수 圓光大學校 醫科學硏究所 1998 圓光醫科學 Vol.14 No.2
Background: The convulsive phenomena are the most frequent of the overt manifestations of neonatal neurological disorders. It is very important to recognize neonatal seizures, to determine their etiology and to treat them for several reasons, such as seizure may be cause brain injury. The Purpose of this study is to help adequate treatment and predict prognosis by analysing clinical manifestations and factors related neonatal seizures. Methods: Retrospective reviews were made on 65 cases of neonatal seizure who were admitted to the Department of Pediatrics, Wonkwang University School of Medicine from January 1995 to May 1998. The most valuable contributing factors among etiology, type of seizure, age of onset, sex, EEC findings for predicting the prognosis were assessed by using soft program of the SSPS/PC+ Discriminant analysis. Results: 1) The most frequent causes of neonatal seizure was hypocalcemia(33.9%), and followed by hypoxic-ischemic encephalopathy(18.5%), hyponatremia(6.2%), unknown(9.2%), benign neonatal convulsion(4.6%), hypoglycemia(3.1%), intracerebral hemorrhage(1.5%), in order of frequency. 2) The time of onset of neonatal seizure was within 24 hours of postnatal age in 22 cases(33.8%), on 2nd and 3rd days in 24 cases(36.9%), 4th and 7th days 12 cases(18.5%). 3) The types of neonatal seizure were multifocal clonic(63.1%), subtle(16.9%), generalized tonic(10.8%), focal tonic(4.6%), focal clonic(3.1%), and myoclonic(1.5%) in order of frequency. 4) The Brain magnetic resonance imaging (MRI) was performed in 31 cases. Abnormal MRI findings were found in 17 (54.8%) and were subcortical hyperintensity and subdural hemorrhage in 4 cases, respectively, periventricular leukomalacia in 3 cases, status marmoratus in 2 cases, periventricular ischemia in 2 cases, and intraventricular hemorrhage and intracerebral hemorrhage in one case, respectively. 5) The electroencephalography(EEG) was done in 34 cases, and showed abnormal findings in 7 cases(20.6%). multifocal clonic and generalized tonic seizure were associated with abnormal EEC in 25.0% and 40%, respectively. 6) The follow-up examination were made on 56 patients(86.2%) during the period from 9 days to 17 months. 2 cases in hypoxic-ischemic encephalopathy 7 patients revealed cerebral palsy, and 1 case in hypocalcemia patient showed continous seizure disorder. Conclusion: The most valuable prognostic factors among EEC findings, onset of seizure, sex, type of seizure, and etiology is EEC findings(P=0.0023).
오광수,류운영 한국섬유공학회 1986 한국섬유공학회지 Vol.23 No.1
Repeated maximum stress of 1kgf/$\textrm{cm}^2$ was applied to the 3kinds of cut pile carpet(made from Acryl, Nylon and Wool) to test the behaviour of carpet at the compression process and the following results were derived from it. 1. The relationships between the percentage of compressive distance to the number of repeat, between the percentage of compressive energy to the number of repeat, and between the recovered carpet height to the number of repeat are all well coincide with the linear regression on the fugure of semi-log scale on which the number of repeat is taken by log scale. 2. Wool carpet shows less number of repeat to achieve the state of mechanical conditioning than the number of it from Acryl or Nylon carpet. Wool carpet also shows smaller deformation than that of Acryl and Nylon when they achieved at the state of mechanical conditioning.