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김종현(JH.Kim),류명효(M.Y.Ryu),정인화(I.W.Jung),S.Shenderey,김종수(J.S.Kim),임근희(G.H.Rim) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
A semiconductor switch-based fast bi-polar high voltage pulse generator is proposed In This paper. The proposed pulse system is made of a thyristor based-rectifier, DC link capacitor, a push-pull resonant Inverter, a high voltage transformer, secondary capacitor, a high voltage IGBT & diode stacks, and a variable capacitor. The proposed system makes bi-polar high voltage sinusoidal waveform using resonance between leakage inductance of the transformer and secondary capacitor and transfers energy to output load at maximum of the secondary capacitor voltage Compared to previous bi-polar high voltage pulse power supply using nonlinear transmission line, the proposed pulse power system Using only semiconductor switches has simple structure and gives high efficiency
강대웅(DW Kang),김종현(JH Kim),박형무(HM Park),박인서(IS Park) 대한산부인과학회 1983 Obstetrics & Gynecology Science Vol.26 No.6
저자들은 최근 성적 소아증, 단신, 성선 발육부전을 지닌 45XO형의 Turner 씨 증후군 1예을 경험하였기에 문헌적 고찰과 함께 보고하는 바이다. The Turner`s syndrome refers to the instance of gonadal dysgenesis associated with somatic anomalies such as sexual infantilism, primary amenorrhea webbing of the neck, cubitus valgus and so on. The authors have recently experienced such a patient as gonadal dysgenesis with primary amenorrhea, sexual infantilism and short stature than her chronological age, and we report this case with a brief review of the literatures.
심재철(JC Sim),김수용(SY Kim),김종현(JH Kim),조성진(SJ Cho),김경태(KT Kim),박인서(IS Park) 대한산부인과학회 1984 Obstetrics & Gynecology Science Vol.27 No.13
Missed abortion has been one of the major problems being confronted with the physician in the midtrimester of pregnancy. This is a clinical study of 31 cases of missed abortions recruited at National Medical Center during 5 years from January 1, 1978 to December 31, 1982. The resutls were as follows: 1. The age distribution was from 22 to 45 years of age and about 50% of cases in 20 to 29 years of age. 2. According to parity, 63.3% of cases were in para 4 or more. 3. Frequent chief complaints were absence or cessation of fetal movement(50%), vaginal bleeding(36.6%), and cessation of uterine growth or decrease in uterine size(13.3%). 4. Gestational ages at the time of fetal death were from 7 to 25 weeks. 5. Seventeen cases(56.1%) retained dead fetus for 1 or 2 months and 9 cases(30%) for 3 or 4 months. 6. None of the cases had abnormal value of blood coagulation tests and fibrinogen before treatment. 7. According to the method of treatment, 13 cases were evacuated by dilatation and curettage, 9 cases by extraovular prostaglandin induction, 6 cases by metreurynter method and 2 cases by highly concentrated intravenous pitocin induction.
분만 예에 있어서 모성건강기록의 임상통계학적 분석 ( III )
박찬무(CM Park),이우흥(WH Lee),송시종(SJ Song),김종현(JH Kim) 대한산부인과학회 1981 Obstetrics & Gynecology Science Vol.24 No.9
1980년 8월1일부터 1981년 5월31일까지 만 10개월간 분석조사한 결과 다음과 같은 결론을 얻었다. 1. 총 분만 878예 중 초산모가 495예(56.38%) 경산모가 383예(43.62%)이었다. 2. 산전 산모의 상태는 합병증이 없는 경우가 544예(84.77%)로 대부분이었고, 합병증이 있는 경우는 임신성 고혈압 48예(7.45%) 생식기 및 골반의 이상 8예 (1.24%) 산전 질출혈 7예 (1.09%) 감염 7예(1.09%) 및 혈액 소견의 이상이 5예(0.78%)의 순이었다. 3. 분만 방법은 정상 질식분만이 559예(63.67%)로 가장 많았고 제왕절개술 153예(17.43%) 및 기계분만 143예(16.29%)의 순이엇다. 4. 분만 중 합병증은 분만지연이 124예(14.71%) 질출혈이 25예(2.97%) 태반계류 17예(2.02%) hypotonic uterine contraction 이 8예(0.95%) 및 전치태반 3예(0.36%)의 순이었다. 5. 분만 시술자는 산부인과 전공의 (레지던트)이상이 수술한 경우가 739예(88.50%)로 가장 많았고 일반전공의가 분만 시술한 경우는 84예(10.06%)이며 그외는 실습 조산원, 조산원, 간 호원 등이 시술하엿다. 6. 제왕절개술의 적응증은 제왕술이 기왕력이 51예(33.33%)로 가장 많았고, 이상 태위가 26 예(16.99%), 분만지연이 26예(16.99%) 이두골반불균형이 5예(3.27%) 유도분만 실패 5예(3.27%) 및 임신 중독증 4예(2.61%)의 순이었다 7. 평균 신생아 체중은 3179.83±471.40gm이었으며 초산은 3109.32±445.48gm이엇고 경산은 3267.99+-490.83gm이었다. 8. 신생아 평균 1분 Apgar score는 7.82±0.94이었으면 5분 Apgar score는 7.85±1.04이었다. 1. The mean age of delivered women was 27.69±3.66 year, mean educational duration 10.95±1.75 years, mean age of first marriage : 24.83±2.75 year, the times of mean antenatal visit : 3.99±2.96 and mean duration of pregnancy : 39.77±2.11 weeks. 2. The incidence of primary antenatal complications was 15.33% in 644 cases, of which hypertensive disorder was the most one (7.45%). 3. The methods of delivery wer as follows ; sponataneous vaginal delivery : 559 cases (63.67%), C-section : 153 cases (17.43%) and vacuum extraction : 143 cases (16.29%) 4. Of 202 cases of intrapartum complications, prolonged/obstructed labor was major one (14.71%). Others were hemorrhage (2.97%) retained products (2.02%), hypotonic uterine contraction (0.95%) and placenta previa (0.36%), etc 5. Majority of attendant at delivery was resident or staff (88.50%). 6. Indication of cesarean section revealed as previous history of cesarean section (33.33%) malpresentation (16.99%) prolonged/obstructed labor (16.99%), cephalopelvic disproportion (3.27%) failed induction (3.27%) toxemia(2.61%) and so 7. the mean body weight of newborn was 3179±471.40gm. 8. The mean Apgar score at one minute was 7.82±0.94 and at 5 minute after birth 7.85+-1.04