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임신중 Hyperreactio Luteinalis 1 례
원찬연(CY Won),이지연(JY Lee),편도진(DJ Pyeon),이신애(SA Lee),김종우(CW Kim) 대한산부인과학회 1995 Obstetrics & Gynecology Science Vol.38 No.11
We present a case of bilateral multiple theca lutein cysts of the ovary complicating single pregnancy. She was 26-years old primigravida, pregnancy at 16 weeks, with abdominal discomfort and increased mass size. Elective both ovary wedge resection was done, pregnancy proceeded uneventfully, woman was vaginally delivered a healthy 3330gm, girl without complications.
과량의 Li 함유 LiCl-Li<sub>2</sub>O 용융염에서 Sm<sub>2</sub>O<sub>3</sub>의 반응 및 용해 특성 평가
권선길,정명수,원찬연,홍순석,오승철,최은영 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
과량의 Li가 함유되어 있는 650°C의 LiCl-Li<sub>2</sub>O-Sm<sub>2</sub>O<sub>3</sub> 계에서 Li<sub>2</sub>O 첨가량을 1wt%에서 8.7wt%로 변화시키고 반응생성물들을 XRD 및 ICP-AES로 분석하여 Sm<sub>2</sub>O<sub>3</sub>의 반응 및 용해 특성을 평가하였다. 그 결과, 40g LiCl, 1.51g Sm<sub>2</sub>O<sub>3</sub> 및 0.09g Li에서 Li<sub>2</sub>O를 2wt%까지 첨가시켜도 XRD 분석에서는 화합물의 변화가 없었고, Li<sub>2</sub>O 첨가량을 약 3wt%이상으로 증가시키면 복합산화물인 LiSmO<sub>2</sub> 만이 관찰되었으나 ICP-AES 분석에서는 3wt% Li<sub>2</sub>O에서 LiSmO<sub>2</sub>이외에 다른 화합물이 존재함을 확인할 수 있었으며, LiSmO<sub>2</sub> 생성반응의 용융염은 회색에서 엷은 노란색으로 변화하였다. 그리고 용융염내 사마륨농도는 1wt% Li<sub>2</sub>O에서는 약 0.0060wt%이었다가 2wt% Li<sub>2</sub>O에서는 0.0106wt%로 증가하였으며 LiSmO<sub>2</sub>가 생성되는 3wt% Li<sub>2</sub>O에서는 약 0.0120wt%로 계속 증가하여 8.7wt% Li<sub>2</sub>O에서는 약 0.0415wt%가 되었다. 그리고 Sm<sub>2</sub>O<sub>3</sub>와 LiSmO<sub>2</sub>의 형상 및 크기를 주사전자현미경(SEM)으로 확인하였다.
편도진(DJ Pyeon),원찬연(CY Won),이종은(JE Lee),이지연(JY Lee),이신애(SA Lee),김종우(CW Kim),강문자(MJ Kang) 대한산부인과학회 1996 Obstetrics & Gynecology Science Vol.39 No.12
Myxoid Leiomyosarcoma of uterus is a very rare malignant tumor and was first in 1982 by King et al. Although in general, leiomyosarcoma shows prognosis according to its mitotic count, this tumor is characterized by low mitotic count without atypia, but taking subsequent malignant course with frequent metastasis and recurrence. We experienced a case of myxoid leiomyosarcoma of uterus in a 42-year old woman with low abdominal discomfort and present this with brief review of literatures.
최은영 ( Eun Young Choi ),홍순석 ( Sun Seok Hon ),박우신 ( Woo Shin Park ),임현숙 ( Hun Suk Im ),오승철 ( Seung Chul Oh ),원찬연 ( Chan Yeon Won ),차주선 ( Ju Sun Cha ),허진목 ( Jin Mok Hur ) 한국화학공학회 2014 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.52 No.3
Nuclear energy is expected to meet the growing energy demand while avoiding CO2 emission. However,the problem of accumulating spent fuel from current nuclear power plants which is mainly composed of uranium oxidesshould be addressed. One of the most practical solutions is to reduce the spent oxide fuel and recycle it. Next-generationfuel cycles demand innovative features such as a reduction of the environmental load, improved safety, efficient recyclingof resources, and feasible economics. Pyroprocessing based on molten salt electrolysis is one of the key technologiesfor reducing the amount of spent nuclear fuel and destroying toxic waste products, such as the long-life fissionproducts. The oxide reduction process based on the electrochemical reduction in a LiCl-Li2O electrolyte has been developedfor the volume reduction of PWR (Pressurized Water Reactor) spent fuels and for providing metal feeds for theelectrorefining process. To speed up the electrochemical reduction process, the influences of the feed form for the cathodeand the type of anode shroud on the reduction rate were investigated.