폐타이어 재활용

김진국,Kim, Jin-Guk 한국자원재생재활용연합회 2004 재활용회보 Vol.2 No.-

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.

폐동맥 면적지표가 청색증 심장 기형에 있어서 라스텔리씨 수술후 조기 예후 판정에 미치는 영향

김진국,노준량,Kim, Jin-Guk,No, Jun-Ryang 대한흉부심장혈관외과학회 1988 Journal of Chest Surgery (J Chest Surg) Vol.21 No.6

There is tendency of increasing number and decreasing age of patients who are indicated for Rastelli operation for their cyanotic congenita heart disease. So there is the need to find the creiterion which saves the patients from early postoperative hemodynamic disturbances. We reviewed the 26 patients who had been performed Rastelli operation at Seoul national University hOipital from January 1981 to June 1988. mean age of the patients was 7.8 $\pm$ 3.4 years (range 2.5-1.5 years), mean body surface area(BSA) 0.79 $\pm$ 0.25 $m^{2}$(range 0.49-1.51 $m^{2}$) and mean hematocrit 57.95 $\pm$ 12%(range 48-80%). We diveded these patients into survived group and died group before postoperative 72 hours, and analysed preoperative arterial oxygen saturation($SaO_{2}$), the ratio of diameter of fight pulmonary artery to ascending aorta(RA:/AA), the ratio of both right and left pulmonary artery diameter to descending thoracic aorta(RPA+LPA/DTA), pulmonary artery index(PA index), cardiopulmonary bypass time, aorta cross-clamping time, postoperative perfusion state and total amount of dopamine infused postoperatively. The results showed that RPA+LPA/DTA and PA index were statistically significatn factors to influence early postoperative cardiac death rate (P<0.05). Especially there were good linear correlations between PA index(X) and perpheral perfusion index(Y)(Y = -1.15 + 0.02 X, r = 0.86, P<0.01) and between PA index(X) and total amount of dopamine infused before postoperative 72 hours(mg/kg, Y)(Y = 61.94 - 0.15 X, r = - 0.80, P<0.01). Also there were tendencies that the higher RPA + LPA/DTA(Y), the betterperipheral perfusion (X) and the lower need of dopamine(X), but no statistical significance. (Y = 0.78 + 1.60 X, r = 0.49, P>0.05) And the discrimant analysis showed that patients with PA index over 221 $mm^{2}$/BSA could undergo correction with 25 per cent of error rate. In conclusion, early postoperative hemodynamic states could be predicted by preoperatively measured PA index, and which can be used as a criterion for Rastelli operation performed on cyanotic congenital heart disease.

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.

선천성 삼첨판 협착증의 수술치험 1례

김진국,안혁,오병희,Kim, Jhin-gook,Ahn, Hyuk,Oh, Byung-Hee 대한흉부심장혈관외과학회 1988 Journal of Chest Surgery (J Chest Surg) Vol.21 No.4

A case of congenital tricuspid stenosis in 24 year old male patient is presented. The lesion was successfully corrected with prosthetic valve replacement and closure of atrial and ventricular septal defects. Especially, this is the first reported case of successful large prosthetic valve replacement to a small annulus in tricuspid valve.

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.

수리수문학적 댐 위험도 평가기법 소개

김진국,김진영,권현한,Kim, Jin-Guk,Kim, Jin-Yeong,Gwon, Hyeon-Han 한국수자원학회 2017 물과 미래(한국수자원학회지) Vol.50 No.3

천연고무와 EPDM 의 노화 거동

김진국,김인환,신진수 ( Jin K . Kim,In Hwan Kim,Jin Soo Shin ) 한국고무학회 1998 엘라스토머 및 콤포지트 Vol.33 No.3

N/A Rubber products are aged like human complexion by the attack of oxygen, ultra violet, ozone, etc.. Aging is very important and also very complicated phenomenon to understand. This may explain the rarity of papers on this subject. In this study, we tried to understand the aging behavior of EPDM compared to that, of natural rubber. We also compared the sulfur vulcanized system to the peroxide vulcanized one. In our experiment, the peroxide vulcanizates were more advantageous in aging than the sulfur vulcanizates. The authors belived that this study about the high performance EPDM would be applicable to rubber industry.