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이수일 대한마취과학회 1989 Korean Journal of Anesthesiology Vol.22 No.4
Parasystole is of special interest among the disturbances of ectopic impulse formatioo. First, a parasystolic arrhythmia is of clinical importance because the ventricular origin ordinarily indicates the presence of organic heart disease. Second, parasystole, although not rare, is frequently overlooked because it is difficult to be differentiated from extrasystole. In this paper a ventricular parasystole is presented. A 48 year-old woman was seen with an irregular pulse rate not accompanying cardiac symptoms or signs. The chest radiograph failed to show cardiomegaly. E.K.G. revealed the dominant rhythm of sinus origin with intermittent ventricular parasystolic beats. The basic rhythm was sinus with a rate of 83 per minute. The coupling interval varied between 0.52 & 0.7 second. The shortest, calculated interectopic interval ranged from 45.2 to 49.7 (These numbers represent hundreds of a second). Occasional ventricular fusion beats appeared. She was uneventfully nephrectomized under general anesthesia with halothane-N2O-O₂for left renal empyema of tuberculosis. She dispensed well with any antiarrhythmic agent during admission
이수일,Lee, Soo-Il 대한예방의학회 1979 Journal of Preventive Medicine and Public Health Vol.12 No.1
For the purpose of further health control, D-penicillamine was orally administered to 8 persons who were employed in lead industry and suspected lead intoxication routine industrial health examination. The does of D-penicillamine was 600 mg per day and was administered orally in every other 5 days, For the laboratory analysis 24 hours urine and 10 gm of whole blood were collected every day. The results were as follows; 1. It was found that mean urinary lead excretion per day was 446.5 g/l and 394.98 g/l, respectively during the first 5-day and the second 5-day administration with D-penicillamine. 2. Mean lead excretion per day was $130.56{\pm}66.42g/l$ after first 5-day administration and $159.28{\pm}104.44g/l$ after second 5-day administration with D-penicillamine. 3. The level of urinary lead excretion after administration increased 3 to 4 times than that before administration with D-peniciilamine. 4. Blood and urinary lead level investigated after 6 months were $44.4{\pm}10.2g/100g\;and\;72.7{\pm}29.7\;g/l$ for the eight persons.
이수일,김태호,김승현,변원남 대한교통학회 2013 교통 기술과 정책 Vol.10 No.4
도로교통공단(2013)에서 발표한 자료에 따르 면 최근 3년간 발생한 어린이 교통사고는 5월이 4,328건으로 가장 많았으며 어린이보호구역 내 교 통사고 역시 224건으로 1년 중 가장 많이 발생하는 것으로 나타났다. 시간대별로는 하교시간대인 오후 2~6시에 전체 어린이보호구역 내 교통사고의 50.8%가 발생했고, 초등학교 저학년인 1, 2학년이 48.0%로 가장 많은 비중을 차지하였다. 이러한 어 린이 교통사고를 줄이기 위해 2010년 행정안전부 (현 안전행정부)가 어린이 종합안전대책의 일환으 로 도입한 보행안전지도사업인 󰡔워킹 스쿨버스 (Walking School Bus)󰡕를 실시하였다.
유체를 이송하는 직선관의 진동 해석을 위한 새로운 비선형 모델링
이수일,정진태,임형빈,Lee, Su-Il,Jeong, Jin-Tae,Im, Hyeong-Bin 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.3
A new non-linear modelling of a straight pipe conveying fluid is presented for vibration analysis when the pipe is fixed at both ends. Using the Euler-Bernoulli beam theory and the non-linear Lagrange strain theory, from the extended Hamilton's principle are derived the coupled non-linear equations of motion for the longitudinal and transverse displacements. These equations of motion are discretized by using the Galerkin method. After the discretized equations are linearized in the neighbourhood of the equilibrium position, the natural frequencies are computed from the linearized equations. On the other hand, the time histories for the displacements are also obtained by applying the generalized-$\alpha$ time integration method to the non-linear discretized equations. The validity of the new modelling is provided by comparing results from the proposed non-linear equations with those from the equations proposed by Paidoussis.