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임신 34 - 36 주의 조산 : 과연 위험한 것인가 ?
안재형(Jae Hyung Ahn),최형민(Hyung Min Choi),황영수(Young Soo Hwang),홍성훈(Seong Hoon Hong),정병준(Byeong Jun Jung),전명권(Myung Kwon Jeon),이응수(Eung Soo Lee) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.1
N/A Objective : We performed this study to determine the safety and danger of preterm delivery at gestational age 34-36 weeks through antenatal profiles, neonatal conditions, neonatal morbidities. Methods : We reviewed our antenatal and neonatal data between December 1999 and April 2001 to determine the morbidities of infants delivered at gestational age 34-36 weeks using χ2test and Fisher's exact test. Results : 1. Mean age was 30.8±4.58yrs and mean gravida was 2.68±1.56. Preterm premature rupture of membrane was higher in preterm delivery at gestational age 34 and 35weeks(respectively 58.6%, 50%). There was no difference in using tocolytics but, antenatal steroid treatment for prevention of respiratory distress syndrome(RDS) was most frequent in gestational age 34weeks.(20.68%) 2. There was no difference in the risk factor of preterm labor at each group. 3. 1-minute Apgar score<7 was significantly more frequent in neonates at gestational age 34weeks but neonatal weight and meconium staining were not different. 4. The rate of neonatal intensive care unit(NICU) admission was significantly higher in neonates delivered at gestational age 34weeks(93.1%), and RDS occurred in 3 cases delivered at gestational age 34weeks(10.34%). 2 cases delivered at gestational age 34 weeks needed the use of ventilator. Conclusion : Our study shows significant differences in neonatal morbidities between 34weeks and the others. In particular, all cases of Respiratory distress syndrome(n=3) occur in neonates delivered at 34weeks gestation not receiving antenatal steroid treatment and neonatal morbidities at 35 and 36weeks of gestation were not different with full term gestation.
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조준호(Joon Ho Cho),황영수(Hyung Soo Hwang) 대한전자공학회 2009 電子工學會論文誌-SC (System and control) Vol.46 No.3
본 논문은 성능 향상을 위하여 IMC 제어 구조를 갖는 PID 제어기 설계를 제안했다. 내부 모델은 최종값 정리와 유전자 알고리즘을 이용하여 2차의 지연시간을 갖는 모델로 동정 하였다. 그리고 제어기 파라미터 값은 성능지수 (IAE, ITAE)값이 최소가 되도록 내부 모델과 수치적 계산에 의해서 자동 동조 된다.시뮬레이션을 통하여 다양한 공정에 대하여 본 논문에서 새롭게 제안된 방법이 기존의 방법보다 우수함을 확인 할 수 있었다. In this paper, it is proposed that the design of the PID controller with the internal model control structure for improved performance. Internal model was identification that is second-order plus dead time structure using final-value theorem and genetic algorithm The parameters of Controller are determined to minimize IAE(Integral of the Absolute value of the Error) and ITAE(Integral of the Time multiplied by the Absolute value of the Error) of performance index by internal model and numerical method. Simulation examples are given to show the better performance of the proposed method than conventional methods.
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안성호,안재형,황영수,고승희,고재환,김용봉,이혜경 인제대학교 백병원 2001 仁濟醫學 Vol.22 No.2
Bowen's disease is developed on skin or mucosal area. It is precancerous lesion and rarely progresses to invasive cancer. This disease can be developed in whole body, but rare in perineal and vulvar area. The authors experienced a case of Bowen's disease on labium minor and present it with brief review of the literature.
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송훈,권석민,안재형,황영수,정경남,고재환,김용봉 인제대학교 2000 仁濟醫學 Vol.21 No.2
Recently, several reports have demonstrated significantly lower pregnancy rates and higher risk of pregnancy loss with IVF-ET in the presence of a unilateral or bilateral hydrosalpinx. But there is still a lack of knowledge as to how the hydrosalpinx exerts its detrimental effects, moreover it is unclear whether hydrosalpinx fluid exerts a direct embryotoxic effect. This study was to investigate the effect of human hydrosalpinx fluid on the development of mouse embryos by comparison of mouse embryo blastulation and hatching rates in media containing increasing concentrations of hydrosalpinx fluid. Culture of mouse embryos at 0% (controls), 0.4%, 0.8% and 1.2% hydrosalpinx fluid concentrations demonstrated lower blastulation and hatching rates at each level compared with the controls. These data suggested that hydrosalpix fluid is highly toxic to mouse embryos.
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