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태양광열(PVT) 융합패널과 계간축열 및 지열히트펌프를 활용한 신재생 융복합 열에너지 공급시스템
류경호(Kyung Ho Ryu),이근휘(Keun Hui Lee) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.11
하절기 활용도가 매우 낮은 태양열을 저장하여 동절기 난방에 사용하기 위한 계간축열(Seasonal Thermal Energy Storage)기술을 적용하되 태양열 집열기 대신 전기와 열을 동시에 생산하는 태양광열(PVT) 융합패널을 이용하여 태양열을 모아서 저장하는데 이때 저장한 열은 30℃ 정도의 비교적 저온이기 때문에 지열히트펌프(GSHP)의 열원으로 이용함으로써 단순 지열히트펌프보다 높은 계절난방성능지표(SCOP)를 달성하면서도 계절냉방성능지표(SEER)의 저하를 최소화하면서 건물의 냉난방 열에너지를 공급할 수 있는 시스템을 구축하였다.
정원무(Weon Mu Jeong),류경호(Kyung-Ho Ryu),조홍연(Hongyeon Cho) 한국해안해양공학회 2015 한국해안해양공학회 논문집 Vol.27 No.4
동해 중부에 위치한 속초항 연안에서 약 11년간 취득한 파랑자료를 스펙트럼법과 파별분석법을 사용하여 분석하고 대표적인 파랑 특성을 검토하였다. 유의파고는 동계에 크고 하계에 작으며, 첨두주기도 동계에 길고 하계에 짧은 특성을 나타내었다. 관측된 최대 유의파고는 8.95 m 였으며 동해선풍에 의하여 발생되었다. 유의파고와 첨두주기 모두 그 분포 형태를 Generalized Gamma 및 Generalized Extreme Value 분포함수보다는 Kernel 분포함수가 보다 잘 재현하였다. 한편, 인근 해역에서의 설계 및 시공에 도움을 줄 수 있도록 파고 자료를 월별 및 파고 구간별로 세분하고 누적출현율을 제시하였다. Wave data acquired over eleven years near Sokcho Harbor located in the central area of the east coast were analyzed using spectral method and wave-by-wave analysis method and its major wave characteristics were examined. Significant wave heights were found to be high in winter and low in summer, and peak periods were also found to be long in winter and short in summer. The maximum significant wave height observed was 8.95 m caused by the East Sea twister. The distributional pattern of the significant wave heights and peak periods were both fitted better by Kernel distribution function than by Generalized Gamma distribution function and Generalized Extreme Value distribution function. The wave data were compiled to subdivide the wave height into intervals for each month, and the cumulative occurrence rates of wave heights were calculated to be utilized for the design and construction works in nearby construction works.
우심방 전체를 침범한 진행성 간세포암종에서의 소라페닙 치료
강영모 ( Young Mo Kang ),류수형 ( Soo Hyung Ryu ),이보경 ( Bo Kyung Lee ),고경호 ( Kyoung Ho Ko ),박태영 ( Tae Young Park ),문정섭 ( Jeong Seop Moon ),조선화 ( Seon Hwa Cho ) 대한간암학회 2018 대한간암학회지 Vol.18 No.2
Advanced hepatocellular carcinoma (HCC) with tumor thrombus extending through the hepatic veins, inferior vena cava, and right atrium (RA) is very rare. However, whether active treatments such as radiation, transcatheter arterial chemoembolization, and sorafenib in advanced HCC with RA involvement prolong survival is uncertain. We present a rare case of advanced HCC with tumor thrombus nearly occupying the entire RA that was treated with sorafenib. The patient received 400 mg sorafenib twice daily. However, her liver enzyme levels continued to increase and abdominal computed tomography showed an increase in the tumor size in the liver and RA. In the present case, active treatment with sorafenib was ineffective; thus, palliative care may be more beneficial in advanced HCC with extensive RA involvement. (J Liver Cancer 2018;18:142-145)
주동욱 ( Dong Wook Joo ),김병석 ( Byung Seok Kim ),하경호 ( Kyung Ho Ha ),박경찬 ( Kyoung Chan Park ),류정일 ( Jung Il Ryu ),이창형 ( Chang Hyeong Lee ) 대한내과학회 2012 대한내과학회지 Vol.82 No.4
Background/Aims: Toxocariasis rarely causes a liver abscess. We assessed clinical and laboratory manifestations as well as therapeutic responses in patients with toxocariasis presenting as a liver abscess. Methods: Fourteen patients with toxocariasis presenting as a liver abscess were analyzed retrospectively. Symptoms, occupational history, dietary habits, contact with pets, allergic disease, peripheral eosinophil count, serum immunoglobulin E (IgE) level, and invasion to other organs were evaluated. After treatment with albendazole, follow-up was conducted with abdominal computed tomography (CT) and the measurement of serum eosinophil and IgE levels. Results: Among 568 patients with a liver abscess, 14 were diagnosed with active toxocariasis. The mean age of the patients was 48 years, and nine (64%) were men. Four (28.6%) patients had pain in the right upper quadrant of the abdomen or epigastric area, one had cough, and the others (64.3%) had no symptom. Pulmonary involvement was noted in five patients and colon involvement in one. Six (42.9%) patients had a recent history of eating raw meat. Initial laboratory findings showed increased eosinophil and IgE levels in all patients. The initial CT showed one or multiple ill-defined, hypodense lesions in the liver. After 1 month of albendazole treatment, eosinophil counts were normalized or had decreased in 13 (93%) patients. On follow-up CT, liver abscesses disappeared within 6 months after therapy in 92% of patients. Conclusions: Symptoms, laboratory findings, and treatment of a liver abscess caused by toxocariasis differ from those of a pyogenic liver abscess. Early serologic testing may increase diagnostic yield and efficacy of treatment in patients with a liver abscess and peripheral eosinophilia. (Korean J Med 2012;82:435-440)