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저유속에서 다공성 입자의 충전층에 대한 비흡착성 기체의 확산 및 분산
하재선,안대영,박인수 慶南大學校 附設 工業技術硏究所 1991 硏究論文集 Vol.9 No.-
저유속에서 다공성입자와 충전층에서 비흡착성 기체의 축방향분산계수를 시간역 곡선맞추기법으로 구하였다. 축방향분산계수와 입자내부확산계수에 대한 2차원 오차 contour는, 본 연구의 실험조건하에서, 전자에 대해서는 비교적 민감하지만 후자에 대해서는 거의 영향을 받지 않았다. 1/(Re ·Sc)에 대한 1/Pe의 상관관계는 직선으로 나타낼 수 있었다. 유속이 영에 접근할 때 분자확산계수에 대한 축방향분산계수의 비의 극한값은 0.454이었다. The axial dispersion coeffcient of nonadsorbing gas was obtained from the gas chromatography in the packed bed of porous particles at low rates. The parameter was estimated by technique of curve fitting in time domain. The two-dimensional error contour against the axial dispersion coeffcient and the intraparticle diffusivity is largely affected by the former, but rare affected by the latter. The correlaton of 1/Pe to 1/(Re ·Sc) showed a straigt line. As the velocity of carrier gas approaches to zero, the limiting value of the ratio of the axial dispersion coefficient to the molecular diffusivity was found to be 0.454.
( Dae Seon Ahn ),( In Hee Kim ),( Seong Hun Kim ),( Sang Wook Kim ),( Seung Ok Lee ),( Soo Teik Lee ),( Dae Ghon Kim ) 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.1
Background: This study was aimed to investigate the initial treatment outcomes and prognosis and to analyze factors associated with initial treatment failure and short-term (30-day) mortality of spontaneous bacterial peritonitis (SBP) in cirrhotic patients. Methods: A total 151 cases of SBP diagnosed in patients with liver cirrhosis between January 2003 and December 2011 were included. SBP was diagnosed based on a polymorphonuclear cell count in ascitic fluid of >250 cells/mm3 in the absence of data compatible with secondary peritonitis. Results: The mean age was 57.6 years, 79.5% of the SBP occurred in men. The rate of initial treatment failure was 58/151 (38.4%). In multivariate analysis, hepatocellular carcinoma (Odd ratio 2.770, p=0.021), gastrointestinal hemorrhage (Odd ratio 4.966, p=0.015), and renal impairment (Odd ratio 4.564, p=0.006) were most important factors associated with initial treatment failure. 7-day and 30-day mortality were 15.2% and 27.8%, respectively. Hepatocellular carcinoma (Odd ratio 2.96, p=0.007) and renal impairement (Odd ratio 4.13, p<0.001) were independent prognostic factors of 30-day mortality. Conclusions: Hepatocellular carcinoma and renal impairment is the main factors associated with initial treatment failure and short-term mortality in patients with SBP.
Basic : A case of propylthiouracil-induced acute hepatic failure (초)
( Dae Seon Ahn ),( In Hee Kim ),( Ji Youn Sohn ),( Dae Hun Kwon ),( Kang Hun Koh ),( Bum Soo Jeong ),( Seong Hun Kim ),( Sang Wook Kim ),( Seung Ok Lee ),( Soo Teik Lee ),( Dae Ghon Kim ),( Hee Chul Y 대한간학회 2011 Clinical and Molecular Hepatology(대한간학회지) Vol.17 No.3(S)
( Dae Seon Ahn ),( In Hee Kim ),( Seong Hun Kim ),( Sang Wook Kim ),( Seung Ok Lee ),( Soo Teik Lee ),( Dae Ghon Kim ) 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.-
Background: This study was aimed to investigate the initial treatment outcomes and prognosis and to analyze factors associated with initial treatment failure and short-term (30-day)mortality of spontaneous bacterial peritonitis (SBP) in cirrhotic patients. Methods: A total 151 cases of SBP diagnosed in patients with liver cirrhosis between January 2003 and December 2011 were included. SBP was diagnosed based on a polymorphonuclear cell count in ascitic fluid of >250 cells/㎟ in the absence of data compatible with secondary peritonitis. Results: The mean age was 57.6 years, 79.5% of the SBP occurred in men. The rate of initial treatment failure was 58/151 (38.4%). In multivariate analysis, hepatocellular carcinoma (Odd ratio 2.770, p=0.021), gastrointestinal hemorrhage (Odd ratio 4.966, p=0.015), and renal impairment (Odd ratio 4.564, p=0.006) were most important factors associated with initial treatment failure. 7-day and 30-day mortality were 15.2% and 27.8%, respectively. Hepatocellular carcinoma (Odd ratio 2.96, p=0.007) and renal impairement (Odd ratio 4.13, p<0.001) were independent prognostic factors of 30-day mortality. Conclusions: Hepatocellular carcinoma and renal impairment is the main factors associated with initial treatment failure and short-term mortality in patients with SBP.
증예(症例) : 선택적 동맥 색전술로 치료한 파열된 신장 혈관근육지방종 1예
안대선 ( Dae Seon Ahn ),백영하 ( Young Ha Baek ),권대헌 ( Dae Hun Kwon ),유혜민 ( Hae Min Yu ),윤해은 ( Hae Eun Yun ),박경택 ( Kyung Taek Park ),전형구 ( Hyung Ku Chon ),홍영민 ( Young Min Hong ),이식 ( Sik Lee ) 전북대학교 의과학연구소 2010 全北醫大論文集 Vol.34 No.1
선택적 동맥색전술은 크기가 중등도 이상인 증상을 동반한 혈관근육지방종 환자에게 일차치료이다. 또한 본 증례에서처럼 혈관근육지방종이 파열된 경우와 같은 혈역동학적으로 불안정한 응급 상황에서도 동맥색전술은 효과적이며 시술 이후 응급 신장절제술과 같은 추가적인 치료가 필요한 경우는 흔치 않다. 동맥색전술 시행 이후에도 출혈이 조절되지 않거나 증상이 지속되는 경우 동맥색전술 실패로 간주하고 이러한 경우에 수술적 치료가 시행되어야 한다. Renal angoimyolipoma (AML) is a benign neoplasm that is composed of adipocyte clusters, smooth muscle and vascular tissue component. In most cases, renal AMLs are asymptomatic and incidental findings. When intra-tumoral hemorrhage occurs from ruptured tumor, it might lead to hypovolemic shock. In such cases, it is major medical emergency and urgent management is indicated. Selective arterial embolization of ruptured renal AMLs has been reported in small series with elective conditions and case reports in life-threatening conditions. However, questions remain with respect to the role and outcomes of emergent selective arterial embolization in urgent case involving ruptured renal AMLs. We report a case of ruptued renal angiomyolipoma in 45-year-old female successfully treated and fortunately the tumor regressed markedly in size by selective arterial embolization without any complication.
바터 팽대부에 비외상성 십이지장 벽내 혈종으로 인한 폐쇄성 황달과 급성 담낭염
안대선 ( Dae Seon Ahn ),김성훈 ( Seong Hun Kim ),윤지영 ( Ji Young Yoon ),장진원 ( Jin Won Jang ),전형구 ( Hyung Ku Chon ),김인희 ( In Hee Kim ),김상욱 ( Sang Wook Kim ),이승옥 ( Seung Ok Lee ) 대한췌장담도학회 2016 대한췌담도학회지 Vol.21 No.1
Nontraumatic spontaneous intramural hematoma is an infrequent complication of the use of oral anticoagulants. The most commonly affected site is the jejunum followed by ileum and duodenum. The symptoms can vary depending on the location and size of hematoma. Patients with intramural hematoma usually present with abdominal pain, nausea and vomiting, but rarely present with hematuria, pancreatitis, cholangitis. An obstructive jaundice and acute cholecystitis has not been reported as a secondary cause of duodenal intramural hematoma in Korea so far. Here, we report spontaneous duodenal intramural hematoma caused by anticoagulant therapy that associated with transient obstructive jaundice and acute cholecystitis in a 79-year-old man, which was successfully managed conservative management. In addition, we reviewed reports of intramural hematoma with literature review.