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RISS 인기검색어
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- 저자 : 성승준 ( Sung Joon Sung ) (검색결과 3 건)
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성승준,홍기웅,김은령,김일수,조병수,Sung, Seung-Joon,Hong, Ki-Woong,Kim, Eun-Ryoung,Kim, Il-Soo,Cho, Byung-Soo 대한소아신장학회 2001 Childhood kidney diseases Vol.5 No.2
목 적 : 신증후군 환자에서 신정맥 혈전증, 폐동맥 혈전증 등의 합병증은 아직도 치명율이 높은 합병증으로 되어 있다. 본 연구는 소아 미세변화 신증후군 환아에서 폐관류스캔을 이용하여 폐색전증의 빈도와 위험요인에 대해 조사함으로 합병증의 조기발견 및 예방으로 신증후군의 치명률을 줄이는데 도움을 얻고자 시행하였다. 대상 및 방법 : 폐관류스캔을 관해기 초기에 Technetium 99-microaggregated albumin (99mTC- MAA)을 사용하여 시행하였으며 폐색전증이 발생한 환아 5명을 A군, 폐색전증이 발생하지 않은 환아 9명을 B군으로 나누고 두 군 간에 혈소판. 적혈구용적률, 알부민, 콜레스테롤, 중성기방, 24시간 뇨 단백분비양에 유의한 차이가 있는지 비교 관찰하였다. 결 과 : 폐색전증을 동반한 A군에서 혈소판 수치가 유의하게 높았으며, 적혈구용적률은 유의한 차이가 없었다. 혈청 알부민도 유의한 차이는 없었으나, 입원시 24시간 뇨 단백은 A군에서 더 심한 단백뇨를 보여 주었으며 통계적으로 유의한 결과를 보여주었다. 혈청 콜레스테롤과 중성지방도 두 군 간에 유의한 차이는 없었다. 결 론 : 폐색전증은 소아미세변화 신증후군에서의 중요 합병증중의 하나이다. 폐색전증의 발생빈도는 치료전의 단백뇨의 정도와 스테로이드 치료 후 초기 관해기에 지속적인 혈소판증가와 연관이 있을 것이다. 그러므로 심한 단백뇨와 혈소판의 증가를 보이는 위험군은 증상이 경미하거나 없더라도 반드시 조기에 폐관류스캔을 시행하여 조기 진단 및 예방적 처치가 필요하리라 생각된다. Purpose : We investigated the incidence and predisposing factors of pulmonary embolism in minimal change nephrotic syndrome(MCNS). Methods : Lung perfusion scan using 99mTC-MAA were done on 14 patients who were diagnosed to minimal change nephrotic syndrome. Group h: Five patients who had perfusion defects on scan, Group B; Nine patients who had no perfusion defect on scan. Between the two groups, the differences of platelet number, hematocrits, albumin, cholesterol, triglyceride, proteinuria were evaluated. Results : Five patients were found to have perfusion defect consistent with pulmonary embolism($35.7\%$). However, there were minimal or no respiratory symptoms and signs. In our laboratory studies, the mean proteinuria on admissions was $676{\pm}31\;mg/m2/hr$ in the group with pulmonary embolism, and $313{\pm}28\;mg/m2/hr$ in the group without pulmonary embolism. There were more severe proteinuria in group with pulmonary embolism(P<0.05). The mean platelet count at early stage of remission after steroid treatment was $746,600{\pm}280,000/mm3$ in the group with pulmonary embolism, $511,890{\pm}90,000/mm3$ in the group without pulmonary embolism. There were significant difference of platelet count between the two groups(P<0.01). In patients with pulmonary embolism, there were more higher and sustained increasement of platelet count. All cases of pulmonary embolism were treated with dipyridamole(5 mg/kg). In 4 cases the perfusion defects were improved in two weeks, however, one case showed persistent perfusion defect after 1 month. Conclusion : Our study suggested that pulmonry embolism might be one of tile major complications in childhood MCNS The occurrence rate was correlated with severity of proteinuria before treatment and sustained increasement of platelet counts in early remission state after steroid treatment. Therefore, the scintigraphic pulmonary perfusion study is mandatory in childhood MCNS, especially in the high risk patients, such as the patients with severe proteinuria and sustained increasement of platelet count. (J Korean Soc Pediatr Nephrol 2001;5 : 100-8)
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영농형 태양광 발전 솔라쉐어링에 따른 하부 일사량 변화의 해석 및 분석
이상익 ( Lee Sang-ik ),최진용 ( Choi Jin-yong ),성승준 ( Sung Seung-joon ),이승재 ( Lee Seung-jae ),이지민 ( Lee Jimin ),최원 ( Choi Won ) 한국농공학회 2020 한국농공학회논문집 Vol.62 No.5
Solar-sharing, which is an agricultural photovoltaic system installing solar panels on the upper part of crop growing field, has especially drawn attention. Because paddy fields for cultivating crops are large flat areas, there have been various attempts to utilize solar energy for solar photovoltaic as well as growth of crops in agriculture. Solar-sharing was first proposed in Japan, and has been actively studied for optimization and practical uses. The domestic climate differs from the climate conditions in which the solar-sharing has been widely studied, therefore, it is required to develop the solar-sharing technology suitable for the domestic climate. In this study, a simulation model was developed to analyze the change of solar radiation resulted from the solar-sharing installation. Monthly solar illumination intensity and the change of illumination intensity according to the various conditions of solar panel installation were simulated. The results of monthly illumination analysis differed by altitude of the sun, which was related to season. In addition, it was analyzed that the monthly illumination decreased by up to 42% due to solar-sharing. Accordingly, it is recommended that solar-sharing should be installed as a way to maximize the efficiency of solar photovoltaic system while minimizing the decrease in solar radiation reaching the crops.
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