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공기유입이 화재강도에 미치는 영향에 대한 실험적인 연구
김진국,Kim, Jin-Guk 한국화재보험협회 1996 방재기술 Vol.21 No.-
An experimental investigation has been made with the objcetive of studying the effects of air entrainment of fire strength. A rich jet flame is considered as an fire, and fire, and the air entrainment is controlled by introducing the tone excitation which is generated by means of a loudspeaker-driven cavity. The excitation frequency is chosen for the resonant frequency identified as a pipe resonance due to acoustic excitation. As the excitation intensity increases, the amplitude of oscillating velocity for inducing air entrainment is increased, the flame height decreased and the structure of diffusion flame gradually transformed to that of premixed flame.
FASTLite를 이용한 backdraft 사고의 해석
김진국,Kim, Jin-Guk 한국화재보험협회 1997 방재기술 Vol.22 No.-
This paper has two objectives. One is to introduce a software package, "FASTLite" for fire safety engineering calculation, the other to show the modeling result of a backdraft incident on the 62 WATTS street. A classic backdraft usually persists only seconds before exhausting their fuel supply but in this case the flame had persists for at least 6 and a half minutes. It is truly necessary to find out where the fuel came from to feed this flame for so long. The backdraft is successfully modelled by using FASTLite. To help understanding of this backdraft, the calculation with the door open is also carried out and compared to the backdraft.
대동맥 박리증의 수술요법 -27례의 수술환자를 대상으로 한 5 년간의 성적-
김진국,안혁,Kim, Jhin-Gook,Ahn, Hyuk 대한흉부심장혈관외과학회 1988 Journal of Chest Surgery (J Chest Surg) Vol.21 No.3
Current therapy of aortic dissections remains unstandardized because of the relative rarity of these catastrophic events and conflicting reported results of various therapeutic strategies. Hence, we reviewed our current results and planned to purify our method of interpretation of results and so, to standardize therapeutic managements. This study comprised unselected, consecutive 27 patients with aortic dissections who were operated at Seoul National University Hospital from Jan 1983 to March 1988. The results from analysis of their preoperative, operative and postoperative finding were as follows: 1] 7 patients had acute type A, 14 had chronic type A, 4 had acute type B, and 2 had chronic type B. 2] The causes of dissections were unclear, but 8 patients had Marfan`s syndromes, 2 had previous operative histories on cardiovascular systems and 2 had congenital heart diseases. 3] Multiple preoperative variables were found to correlate significantly with operative mortality and complications. The prevalences of such preoperative major complicating factors were significantly more frequent in acute than chronic [P < 0.05] and type A than type B [P < 0.01]. 4] Operations were performed according to the type of the dissections and whether it was acute or chronic. Usually dacron tube graft replacements were performed[25/26]. Intraluminal sutureless graft replacement was performed in 11 patients. Of the 14 patients with combined aortic regurgitation, concomitant aortic valve resuspension in 4, seperative aortic valve replacement in 1, and aortic valve replacement with coronary reimplantation were performed in 9 patients. 2 patients had concomitant arch vessel managements. 5] Over-all operative mortality rate was 33% and 54% for acute type A, 25% for acute type B, 29% for chronic type A, 0% for chronic type B respectively. The main causes of operative mortality were cardiovascular complications [mainly CPB-weaning failure] in acute cases and hemorrhagic complications in chronic cases.
경구개법 또는 내시경하 비내 접근법으로 치료한 비인강 혈관 섬유종 3예
김진국,이민우,강성호,남태욱,김재영 건국대학교 의과학연구소 2001 건국의과학학술지 Vol.11 No.-
Nasopharyngeal angiofibroma is uncommon, histologically benign vascular tumor that occurs almost exclusively in adolescent males. It is clinically malignant because it has propensity for locally destructive growth and fatal hemorrhage. Treatment of angiofibroma is controversial. The two major treatment modality are surgery and radiation. Adjuvant treatment with chemotherapy or embolization can be used as well. We experienced three cases of nasopharyngeal angiofibroma that was resected by transpalatine and endoscopic endonasal approach with good result. So, we report these with review of literature.