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체정맥환류이상을 동반한 복잡심기형환자에 있어 체정맥심방 양분을 이용한 Fonatan 씨 술식 체험 -새로운 수술방법-
김진국,김용진,서경필,Kim, Jin-Guk,Kim, Yong-Jin,Seo, Gyeong-Pil 대한흉부심장혈관외과학회 1988 Journal of Chest Surgery (J Chest Surg) Vol.21 No.5
A technique applicated for physiologic correction of complex congenital cardiac disease suitable for Fontan procedure in which drainage of left superior vena cava and hepatocardiac vein to left atrium combined is described. We made one systemic venous baffle from left hepatocardiac vein to left superior vena cava and another systemic venous baffle from right inferior vena cava to the right superior vena cava with rigid prosthetic material[0.5mm thickness PTFE patch]. And then we anastomosed directly between the right sided atrial appendage and right pulmonary artery, and left-sided atrial wall beneath the appendage and left pulmonary artery. We believe that this procedure is superior to the method using intraatrial tube graft to divert the left hepatocardiac venous blood to right atrium, and applicable for physiologic correction of any complex congenital cardiac disease suitable for Fontan-type procedure in which anomalies of systemic venous drainage combined.
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.
대동맥판 폐쇄부전증이 동반된 심실중격결손증 수술의 장기 성적- 적절한 수술시기 및 수술 방법-
김진국,함시영,서경필,Kim, Jin-Guk,Ham, Si-Yeong,Seo, Gyeong-Pil 대한흉부심장혈관외과학회 1988 Journal of Chest Surgery (J Chest Surg) Vol.21 No.2
52 cases of ventricular septal defect [VSD] associated with aortic insufficiency [Al] were found among 1271 patients with simple VSD operated during 27-year period [1959, August-1987, June] at Seoul National University Hospital. Their preoperative data, intraoperative findings and postoperative short-term and long-term follow-up data were evaluated to find the proper timing and method of surgical treatment. The result of this survey shows as follows: 1. To obtain the proper surgical indication, cardiac catheterization and angiography, especially root aortography, was essential. 2. Of all 52 patients, the VSD were type I in 40 patients [77%], type II in 8 [15%] and combination of type I and II in 4 [3%]. Patch closure of VSD were performed in 46 patients and direct suture closure of small VSD in 6. Most common pathologic findings of Al were prolapse of right coronary cusp [40 cases, 77%]. Aortic valve reconstruction were performed in 19 patients, aortic valve replacement in 6 and VSD closure alone in 27. 3. There were 3 surgical deaths [mortality 5.8%], and the long-term follow-up shows that VSD closure alone might have been sufficient to arrest progression of Al in younger patients [less than 10-year old], particularly in those with mild insufficiency. Valve reconstructions, when necessary, were more effective when done at an early age [less than 15-year old]. In a conclusion, we could recommend followings: 1. If patient at any age having VSD with Al is diagnosed, prompt operation is recommended. As for the surgical method, VSD closure only may be fit for mild degree of Al when patient is less than 10-year old, but the management of valve itself may be needed for moderate to severe degree of Al, especially when patient is over 10 year old. The management of valve itself may be variable, but valve reconstruction should be considered as a first choice in less than 15-year old patient. If patient is diagnosed less than 5-year old without evidence of Al, close follow-up observation is recommended. But if Al evidences of clinical findings and/or echocardiography during follow-up examination are notified, corrective operation should be accomplished while the Al is mild. If cusp prolapse and/or even type I VSD of significant size is demonstrated on aortogram, without Al, it should be corrected as early as possible before the patient is about 5 years old.
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.
직선배관에서 균일한 공기 흡입을 하는 오리피스 직경변화에 대한 연구
김진국,Kim, Jin-Guk 한국화재보험협회 1998 방재기술 Vol.24 No.-
The objective of this paper is to investigate the variation of orifice diameter in a straight pipe which can give equal-sampling rate. This can be utilized for designing orifice in air-sampling smoke detector. The elements which should be considered for designing orifices was presented and the calculation procedure was also given in this paper. The effects of pipe length, the number of orifices, fan pressure was decribed.