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급성 식도 정맥류 출혈시 내시경적 결찰술과 Octreotide 및 Terlipressin 병용요법의 치료효과와 부작용 비교
김세형 ( Se Hyung Kim ),함정호 ( Jung Ho Ham ),박진우 ( Jin Woo Park ),이석호 ( Suck Ho Lee ),김홍주 ( Hong Joo Kim ),김현준 ( Hyun Jun Kim ),정일권 ( Il Kwun Chung ),김홍수 ( Hong Soo Kim ),박상흠 ( Sang Heum Park ),김선주 ( Sun 대한내과학회 2005 대한내과학회지 Vol.68 No.2
목적 : 급성 식도정맥류 출혈을 동반한 간경변증 환자에서 내시경적 결찰요법과 대표적인 혈관 작용성 약물인 octreotide 및 terlipressin을 병용 치료하였을 때 각각의 치료효과와 부작용을 비교하였다. 대상 및 방법 : 1999년 1월부터 2001년 2월까지 순천향의과대학 천안병원에 내원한 식도정맥류 출혈환자 73명을 대상으로 내시경적 결찰술과 함께 무작위로 octreotide 병용치료군과 terlipressin 병용치료군으로 분류하여 초기 Background : In patients with liver cirrhosis, acute esophageal variceal bleeding is a life-threatening event with high mortality and subsequent recurrent bleeding despite of endoscopic therapy. So the effect of vasoactive agents used in combination with
김도영(Do-Young Kim),함정호(Jung-Ho Ham),김내현(Nae-Hyun Kim),박래현(Rae-Hyun Park),황준현(Jun-Hyun Hwang) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
The effect of inclination angle on the heat transfer and pressure drop characteristics of brazed aluminum heat exchangers is experimentally investigated. Three samples having different fin pitches (1.25, 1.5 and 2.0㎜) were tested. Results show that heat transfer coefficient is not affected by the inclination angle. However, the friction factor increases as the inclination angle increases with negligible difference between the forward and backward inclination. Both the heat transfer coefficient and the friction factor are the smallest at P<SUB>f</SUB>=1.5㎜, followed by P<SUB>r</SUB>=2.0㎜ and 1.25㎜. Possible explanation is provided considering the louver layout Comparison with existing correlations is also made.
김내현(Nae-Hyun Kim),함정호(Jung-Ho Ham),오왕규(Wang-Ku Oh),최용화(Yong-Hwa Choi),하야세(Hayase Gaku) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
In this study, pressure drop and heat transfer characteristics of plain finned heat exchangers having 5.0 diameter (fin collar 5.3 ㎜) tubes were investigated. Six samples having different fin pitches and tube rows were tested. The fin pitch had a negligible effect on j and f factors. Both j and f factors decreased as the number of tube row increased, although the difference was not significant for the f factor. When compared with the previous 7.3 ㎜ diameter data, both the present j and f factors yielded lower values. However, the j/f ratio was larger at low Reynolds numbers. Possible reasoning is provided from the flow pattern consideration. Comparison with existing correlations were made.
유입 방향에 따른 알루미늄 평행류 열교환기 헤더내 공기-물 2 상류 분지 실험
김내현(Nae-Hyun Kim),함정호(Jung-Ho Ham),박태균(Tae-Kyun Park),김도영(Do-Young Kim) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
The air and water flow distribution are experimentally studied for a round header ? ten microchannel tube configuration. Three different inlet orientations (parallel, side, normal) were investigated. Tests were conducted with downward flow configuration for the mass flux from 70 to 130 ㎏/㎡s, quality from 0.2 to 0.6, non-dimensional protrusion depth (h/D) from 0.0 to 0.5. It is shown that, for almost all the test conditions, normal inlet yielded the best flow distribution, followed by side and parallel inlet. Possible reasoning is provided using flow visualization results.
혼합냉매 (R290/DME)를 사용하는 소프트 아이스크림 제조기 최적화
박태균(Park Tae-Gyun),한성필(Han Sung-Phil),신태룡(Shin Tae-Ryong),함정호(Ham Jung-Ho),김내현(Kim Nae-Hyun),박형채(Park Hyung-Chae) 대한설비공학회 2006 대한설비공학회 학술발표대회논문집 Vol.2006 No.11
Drop-in tests were conducted using R290/DME (65:35) mixture in a ice-cream maker for possible replacement of R-502 and R-404A. At the standard room temperature (20℃), the time required for initial ice-cream making was 4’ 59” for R290/DME. The electric energy consumed was 439 kJ for R290/DME. The mass flow rate as well as the temperature and pressure data are also provided.
간경변증 환자에서 식도정맥류 출혈의 계절적 변화의 관련 요인 분석
이선해 ( Sun Hae Lee ),김선주 ( Sun Joo Kim ),정승원 ( Seung Won Jung ),김지욱 ( Ji Wook Kim ),김환열 ( Hwan Yeol Kim ),김영훈 ( Young Hoon Kim ),이보영 ( Bo Young Lee ),함정호 ( Jeung Ho Ham ),김인호 ( In Ho Kim ),정일권 ( Il ksu 대한소화기학회 2002 대한소화기학회지 Vol.40 No.6
Background/Aims: The circadian variation of portal blood pressure and diurnal incidence of esophageal variceal bleeding (EVB) is well known, but the seasonal variation of EVB is still controversal. This study was performed retrospectively to evaluate the seasonal variation of EVB in patients with liver cirrhosis. Methods: Three hundred and seventy-five liver cirrhotic patients with EVB were enrolled. We evaluated the seasonal variation of EVB and correlations between bleeding and other clinical factors including recent alcohol intake. Results: The incidence of EVB was highest in April (50% higher than the monthly average), followed by March and lowest in July and August (45.8% lower than the monthly average), which did not reach statistical significance. The pattern of seasonal variation in patients with a history of recent alcohol intake was similar to that in the overall patient population, whereas the incidence of EVB was highest in December and lowest in August in patients without a history of recent alcohol intake. This may indicate that a history of recent alcohol intake is an important factor for EVB. Other factors such as age and Child-Pugh classification did not correlate with the seasonal variation of EVB. Conclusions: There seems to be a seasonal variation of EVB in patients with liver cirrhosis and alcohol intake may affect this seasonal variation. This result could be explained by the fact that the spring is a busy farming season and suitable for drinking in a rural district. (Korean J Gastroenterol 2002;40:386-393)