http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
인슐린비의존성 당뇨병환자에서 혈청 4 형 Collagen - 7S 의 의의
김영태(Young Tae Kim),한영찬(Young Chan Han),이정해(Jeong Hae Lee),김진곤(Jin Gon Kim),장태종(Tai Jong Jang),김윤권(Youn Kwon Kim),김소연(So Yon Kim),이권전(Gwon Jun Lee) 대한내과학회 1995 대한내과학회지 Vol.48 No.6
Objectives: Thickening of basement membrane in capillaries and small vessels is a characteristic change in diabetic microangiopathy. It is improtant to observe dynamics of basement membrane metabolism in progression of this complication. Recently the component of basement membrane, collagen type IV-7S, can be detected in human sera by radioimmunoassays, Serum concentrations of collagen type IV was increased in diabetic patients and streptozotocin-induced diabetic rats. For the assessment of diabetic complication, we measured serum collagen type IV levels in non-insulin-dependent diabetic patients, comparing them with complications and durations of diabets mellitus. Methods: We measured serum collagen type IV levels in 94 non-insulin-dependent diabetic patients with or without clinical signs of retinopathy, nephropathy and in 32 healthy subjects without any serologic abnormality. We compared serum collagen type IV levels with degrees of complications and durations of diabets mellitus, Results: Serum concentrations of collagen type IV were significantly higher in diabetic patients than in healthy subjects. Serum collagen type IV levels were increased in patients with proteinuria, especially higher in patients with microproteinuria than in patiens without microproteinuria. Serum collagen type IV levels in patients with macroproteuinuria were significantly higher than in patients with microproteinuria. In patients with diabetic retinopathy, serum collagen type IV levels were significantly increased. Patients with proliferative retinopathy showed significant high levels of serum collagen type IV. Serum concentrations of collagen type IV were increased proportionately to the length of duration of diabetes mellitus. Conclusion: Serum collagen type N seems to be a useful, nonivasive, reproducible marker for assessment of the activity or progression of diabetic microangiopathy.
얼굴과 지문을 결합한 다중 생체인식 시스템의 실험적 연구
강효섭(Hyo-Sup Kang),한영찬(Young-Chan Han),김학일(Hakil Kim) 한국정보과학회 2002 한국정보과학회 학술발표논문집 Vol.29 No.2Ⅱ
생체인식 기술은 급속도롤 발전하고 있지만 개개의 생체 정보를 이용한 단일 생체인식 기술은 생체 방식에 따라 각각의 문제점이 노출되고 있는 상황이다. 이에 두 가지 이상의 생체 정보를 결합하여 단일 생체인식 기술의 문제점을 극복하고 보다 좋은 인식률을 확보하기 위해 다중 생체인식 시스템(Multi - Modal Biometrics System)이라는 복합 시스템이 제안 되었다. 이 논문에서는 생체인식 산업의 특성 및 개인 인증 방법으로 사용중인 단일 생체인식 시스템의 문제점을 알아보고 그 해결방안으로 다중 생체인식 시스템의 확률단계(Probability Level)에서 더 좋은 성능을 보여주기 위해 각각의 시스템이 가중치(Weight)를 부여 할 경우, EER(Equal Error Rate)이 단일 생체인식 시스템에 보다 가중치를 부영 했을 때 낮아짐과 동시에 ROC 커브도 (Receiver Operating Characteristic Curve) 좋아 짐을 보였다.
간경변증 환자에서 혈청 4형 Collagen-7S의 의의
차경석(Kyoung Seok Cha),한영찬(Young Chan Han),김영태(Young Tae Kim),이숭구(Sung Ku Lee),서대원(Dae Won Seo),김영중(Young Jung Kim),박병익(Beong Yik Park),조민구(Min Koo Cho) 대한소화기학회 1995 대한소화기학회지 Vol.27 No.3
N/A Background/Aims: Cirrhosis is defined anatomically as a diffuse process with fibrosis and nodule formation. Although liver biopsy provides the evaluation of the degree of fibrosis, a simpler diagnostic method would be helpful for its invasive nature. The serum type IV collagen is known recently to indicate the activity of collagen synthesis in the process of fibrosis. This study aims to evaluate the usefulness of serum type IV collagen with the clinical and laboratory findings. Methods: A number of abnormalities were found to be statistically associated with the levels of serum type IV collagen. Included among the clinical abnormalities were pitting edema, ascites, splenomegaly, jaundice, and encephalopathy. The laboratory tests include albumin, tota1 bilirubin, prothrombin time, and alkaline phosphatase. Results: Significant correlations were found between the serum type IV collagen and the grade of the modified Childs classification(p0.05: between class A and B, class B and C, respectively), as well as the CCLI(comhined clinical and laboratory index, r=0.74, Y=6.78 +0.71X, p0.001). Conclusions: These results suggest that the serum type IV collagen may be a sensitive marker of fibrotic process and may reflect the present state and prognosis in cirrhosis. (Korean J Gastroenterol 1995;27:331 337)
갑상선 기능에 따른 혈액응고인자의 활성도 변화에 대한 고찰
김진석(Jin Seok Kim),문희승(Hee Seung Moon),이석호(Seok Ho Lee),한영찬(Young Chan Han),이윤하(Joun Ha Lee),차경석(Kyung Suk Cha),이정해(Jung Hae Lee),김소연(So Yon Kim),이권전(Gwon Jun Lee) 대한내과학회 1994 대한내과학회지 Vol.47 No.1
Background: Coagulation abnormalities have been reported in patients with thyroid dysfunction. We stud- ied the levels of the coagulation activities in patients with thyroid disorders and the changes of them in response to therapy Methods: Coagulation studies were perfomed in 35 patients with abnormal thyroid function. Nineteen patients had hyperthyroidism and nine patients had hypothyroidism. Seven patients were euthyroid with previous antithyroid therapy. Results: 1) In nineteen patients with hyperthyroidism, the increased activities of factor VIII(170.4±71.3%) showed significant correlations (r=0.73) with increased level of T3 and weak correlations (r=0.50) with the level of T4. All other factors except factor VIII were normal. 2) Seven hyperthyroid patients whose thyroid hormone remained normal with antithyroid therapy showed normal coagulation activities, 3) Nine hypothyroid patients showed decreased activities of several coagulation factors; VIII: 44.2±12. 59%, IX: 56.2±15.0%, XII: 55.0±26.4% 4) Five of them hyperthyroid and two of the hypothyroid patients were followed up. The activities of factor VIII returned to normal after correction of the thyroid function. Conclusion: Hyperthyroidism showed a significant eleevation of factor VIII activity, which returned to normal after antithyroid therapy. Hypothyroidism was associated with subnormal levels of several coagulation factors (factor VIII, IX and XII). It seems unlikely that changes in activities of coagulation factors are caused by a common mechanism in patients with thyroid dysfunction.
무혈성괴사에서 근위 대퇴골 간단부의 지방화의 평가 : T1 강조영상을 이용한 방법
구경회 ( Kyung Hoi Koo ),송해룡 ( Hae Ryong Song ),정순택 ( Soon Taek Jeong ),정재혁 ( Jae Hyuck Jeong ),한영찬 ( Young Chan Han ),조세현 ( Se Hyun Cho ) 대한고관절학회 1997 Hip and Pelvis Vol.9 No.2
To determine whether fatty marrow conversion of the proximal femoral metaphysis is related to osteonecrosis of the femoral head, a case-control study was conducted on 42 osteonecrotic hips in 28 patients using Tl-weighted MRls. The 42 hips with osteonecrosis were matched with 84 normal control hips as for gender, age (5-year range), and time of presentation (1-year range). The signal intensities of the proximal femoral metaphysis (SM) and the greater trochanter (ST) were measured in each hip studied. We derived a marrow conversion index (%) using the formula: (SM/ST) x IOO (%). The index was 90.2% (SD, 8.2) in osteonecrotic hips, and 75.1% (SD, 9.1) in matched controls (p = 0.000). By conditional logistic regression, a 5% increase in the index above our control group value of 75% was associated with 3.6 times higher risk for osteonecrosis (95% CI = 1.9-6.7, p = 0.000) and a 10% increase with 12.9 times higher risk (95% CI = 3.7-44.8, p = 0.000). The marrow conversion index, which reflects the ratio of fatty marrow conversion of the proximal femoral metaphysis to that of the greater trochanter measured on Tl-weighted MRI, has a strong association with an increased risk for osteonecrosis.