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이재주(Jae Ju Lee),장진석(Jin Seok Jang),박현규(Hyun Gyu Park),유완석(Wan Suk Yoo),김현우(Hyun Woo Kim),배병태(Byung Tae Bae) 대한기계학회 2016 大韓機械學會論文集A Vol.40 No.1
차단기 메커니즘의 안전성은 클로징 메커니즘 작동 시 접점 이후의 속도 감소를 통한 오픈 샤프트가 래치에 걸리는 래칭(latching) 구간에서의 유지 시간 개선을 통해 확보된다. 이는 오픈 래치가 복귀할 시간을 확보하여 재 차단되는 현상을 줄이기 때문이다. 본 연구에서는 캠 윤곽 최적화를 통해 기존의 구동 성능을 만족하고 래칭 구간에 대한 메커니즘의 안전성을 확보하고자 가동부의 변위 응답 중 래칭이 발생하는 구간에서의 유지 시간을 개선하였다. ADAMS 를 이용한 차단기 다물체동역학 모델을 개발하였으며 시험 결과와 비교하여 검증하고 최적설계 프로그램인 PIAnO 를 사용하여 캠 윤곽의 최적설계를 수행하였다. 캠 윤곽의 최적설계는 캠의 반경 방향으로 설계점을 선정하였으며 설계구간별 민감도 분석을 수행하였다. 최적화 결과 래칭 구간에서의 유지 시간을 개선하였다. Higher circuit breaker safety standards can be obtained by increasing the sustaining time of the latching section. This time increase is achieved through velocity reduction after contacting when the closing mechanism operates. The potential for the re-closing phenomenon to occur is also reduced by obtaining time to return open latch. In this study, the sustaining time for the latching section was increased through cam profile optimization based on the displacement response of the moving parts. In addition, the existing performance velocity was also satisfied. A multibody dynamics model of the circuit breaker was developed using ADAMS. To validate the model, simulation results were compared to experiment results. Then, cam profile optimization was carried out using an optimal design program PIAnO. Design variables selected included the radial direction of the cam. Design sensitivity analysis was carried out by design section as well. As a result of optimization, the sustaining time for the latching section was increased.
뇌출혈 및 HELLP 증후군을 동반한 자간증 치료 보고
이재주 ( Jae Ju Lee ),한균 ( Kyun Han ),이현승 ( Hyun Sung Lee ),박철홍 ( Cheol Hong Park ),남신우 ( Shin Woo Nam ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.2
Eclampsia is defined as the occurrence of convulsions, not caused by any coincidental neurologic disease such as epilepsy, in a woman whose condition also meets the criteria for preeclampsia. Intracerebral hemorrhage with eclampsia is rare but maternal mo
유재경(Jae Kyoung Yoo),이재주(Jae Ju Lee),송정호(Jung Ho Song),전성철(Sung Chul Jeon),강지훈(Ji Hoon Kang),김성(Sung Kim),박철홍(Cheol Hong Park),조대현(Dae Hyun Cho) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.12
N/A Bilateral tubal pregnancy is the least common type of all extrauterine pregnancies, 1:725-1:1580 of pregnancies are bilateral. Simultaneous tubal pregnancies have been reported in natural cycles, recently, after ovulation induction, assisted reproductive techniques. The high incidence of ectopic pregnancy assisted with ovulation induction continues to be a problem. Bilateral tubal pregnancy associated with the ovulation induction has been reported few cases of 3.0% to 6.0% in frequency. This paper describes a case of simultaneous bilateral tubal pregnancy after ovulation induction and intrauterine insemination in a 27 year old patient. The diagnosis was confirmed by laparoscopy performed 30 days after intrauterine insemination, which revealed bilateral tubal pregnancy and mild hyperstimulated ovaries. Bilateral salpingectomy was performed. With a review of the literature on this topic, diagnostic aspect and incidence and treatment options are discussed.
김도형(Do-Hyung Kim),김병일(Byung-Il Kim),한상재(Sang-Jae Han),이재주(Jae-Ju Lee) 한국토목섬유학회 2009 한국토목섬유학회 학술발표회 Vol.2009 No.4
본 논문에서는 서해안 해성 점성토 지반에 적용된 석셕드레인공법의 시공 사례를 제시하였다. 석션드레인공법 적용 지반에서는 진공압만을 이용하여 기존 성토재하공법을 대체할 수 있는 침하량이 발생하였으며, 현장에서 측정된 진공압을 이용한 수치해석 결과를 이용하는 것이 더 정확한 지반 거동을 예측함을 보였다. 또한, 진공펌프에서 측정된 진공압보다 지반에서 발생되는 진공압이 다소 작음을 보였고, 개량 후 비배수 전단강도와 선행압밀하중은 증가고 함수비는 감소하여 지반개량 효과를 확인할 수 있었다.
난소 내배엽 종양에서 수술 후 BEP 복합화학요법에 의한 완전관해 1 예
조대현,강지훈,이미선,송정호,최영렬,이재주,전성철 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.9
Endodermal sinus tumor (EST) has also been referred to as yolk sac carcinoma because they are derived from the primitive yolk sac. These lesions are the third most frequent malignant germ cell tumor of the ovary. Patient with EST have a median age of 18 years, but approximately one third of the patients are premenarchal at the time of initial presentation. Abdominal and/or pelvic pain is the most frequent presenting symptom, most EST secrete AFP. Radical surgery has not been helpful, but recent advances in treating the EST of the ovary with the combination chemotherapy after unilateral salpingo-oophorectomy result in improvement of the prognosis. We had experienced a case of endodermal sinus tumor of 36 years old woman. So, we report this case with brief review of the literature.