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공동주택에서 바닥복사 난방시스템의 실별 제어에 관한 연구
김오봉,이미경,여명석,김광우 대한설비공학회 2004 설비공학 논문집 Vol.16 No.5
In Korea, the radiant heating system has been widely used as a residential heating method, which has been modernized to use hot water running into the tubes embedded in the floor structure. According to the recent improvement of living standard of residential buildings, the requirement of the thermal comfort and energy saving in heating system has been raised. Until now, the radiant floor heating system has been controlled by room thermostat installed in the living room, but for better thermal comfort, an individual room control method is adopted as an alternative. Therefore, it is necessary to evaluate the control performance between the current control method and the individual room control method. In this study, the control performance between the two systems is evaluated through the field experiment. And the control performances of room air temperature and energy performances are analyzed through the simulation using TRNSYS. Firstly, the simulations are performed in the various outdoor conditions and the flow rates and the simulation results are analyzed for the control performances. Also, to evaluate the energy performance, the simulations are performed under the operating conditions in which the set-point of the room air temperature is fixed or changed according to the schedule of occupancy, and the simulation results are analyzed between the two methods.
CDK4와 hTERT를 도입한 HPV16 E6/E7 불멸화 세포의 확립
박영진,홍두표,김은철,오봉경,김진 대한구강악안면병리학회 2010 대한구강악안면병리학회지 Vol.34 No.1
Human papillomavirus (HPV) has been classified as one of the causing factors of head and neck squamous cell carcinoma (HNSCC). However, little is known about HPV-related carcinogenesis in HNSCC. The purpose o f this s tudy i s to characterize immortalized human oral keratinocyte (IHOK) transfected by HPV16 E6/E7, IHOK/hcdk4 (IHOK transfected by pLXRN-hcdk4) and IHOK/hcdk4/hTERT (IHOK transfected by pLPC-hTERT-hcdk4) to reconstitute HNSCC in vitro. Conclusively, we established a new immortalized cell lines, IHOK/hcdk4 and IHOK/hcdk4/hTERT, to understand multistep carcinogenic process of oncogenic HPV16 E6/E7 in HNSCC.
오봉석,김상형,이동준,Oh, Bong-Suc,Kim, Sang-Hyung,Lee, Dong-Joon 대한흉부심장혈관외과학회 1982 Journal of Chest Surgery (J Chest Surg) Vol.15 No.1
Cold blood potassium cardioplegia, by two types of the infusion systems, was used in 45 patients who were undergone the open cardiac operation. Method A [in 25 patients] was the syringe infusion system and method B [in 20 patients] was the pump infusion system. Cold blood potassium cardioplegic solution was used less amount on method B than method A. Serum potassium was often increased significantly on method A as a result of excessive infusion of cold blood potassium cardioplegic solution. But method B, excessive infusion of cold blood potassium cardioplegic solution was prevented by reperfusion of the previous infused cold blood potassium cardioplegic solution through the recirculation system. Alteration of infused rate and concentration of potassium in cold blood potassium cardioplegic solution during infusion [which might be suggested on the method A] could be controlled on method B.
오봉석,김상형,이동준,O, Bong-Seok,Kim, Sang-Hyeong,Lee, Dong-Jun 대한흉부심장혈관외과학회 1983 Journal of Chest Surgery (J Chest Surg) Vol.16 No.3
In general, hiatal hernia is rare incidence among diaphragmatic hernia in Korea especially in pediatric group. Recently great interest in hiatal hernia has not led to common agreement concerning the pathophysiology, method of diagnosis, clinical picture, Indications, and type of treatment. At 1981 and 1983, two cases of congenital hiatal hernia [type I, III] were surgically treated,which surgical Intervention was modified Hill`s operation and gastropexy. Postoperatively, clinical and radiological examination were proved no regurgitation, no dysphagia and well passage of barium.
70세 이상 고령 환자에서 관상동맥 우회술 -2례 보고-
김주홍,오봉석,이동준,Kim, Ju-Hong,O, Bong-Seok,Lee, Dong-Jun 대한흉부심장혈관외과학회 1995 Journal of Chest Surgery (J Chest Surg) Vol.28 No.4
Recently we experienced coronary artery bypass graft in two patients over 70years of age. Among them, one case was 74 old year male and the other case was 73 old year male. The coronary artery diseases of them were angiographically diagnosed to triple vessel diseases. We only used great saphenous vein as graft vessel in two patients. The postoperative courses were good except mediastinal bleeding in 1 case. They were discharged with good results. They were still healthy 40 months in one and 30 months in the other after coronary artery bypass grafting.