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안면부, 유방 및 상완부에 발생한 홍반성 루푸스 지방층염 1예
송유근,손두식,명형준,이현정,임중규,김순호,김윤아 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.2
Lupus erythematous panniculitis is a chronic inflammatory disease of subcutaneous fat that occurs in 2-3% of patients with systemic lupus erythematosus. Lupus erythematous panniculitis typically presents with firm, indurated subcutaneous nodules or plaques commonly developed in proximal extremities, trunks, head and neck. Face, breast and upper extremities involvement with lupus erythematous panniculitis has been infrequently reported. We report a case of lupus erythematous panniculitis developed in a 27-year-old female confirmed by histologic features and laboratory findings.
Concordance Analysis를 이용한 임도개설의 순위결정에 관한 연구
차두송,김종윤,정도현,지병윤 江原大學校 森林科學硏究所 1997 Journal of Forest Science Vol.13 No.-
이 논문은 Scoring법의 Concordance Analysis를 이용하여 전국 11개 지역을 대상으로 임도노선의 개설순위를 결정하였다. 그 결과 우위성 지수(Concordance Index)에 의한 임도개설 우선순위는 대상지역 9 > 5 > 11 > 10 > 6 > 1 > 3 = 4 > 2 > 7 > 8으로 나타났으며, 열세성지수(Dis-concordance Index)에 의한 임도개설 우선순위는 대상지역 9 > 3 > 4 > 5 > 10 > 8 > 1 > 11 > 6 > 7 > 2로 나타났다. By the means of concordance analysis among scoring methods, this study was to determine the priority order of forest road construction in 11 areas. The results have shown that the Priority order by concordance index was ranked by area 9, 5, 11, 10, 6, 1, 3=4, 2, 7 and 8, and that by dis-concordance index by area 9, 3, 4, 5, 10, 8, 1, 11, 6, 7 and 2.
최두환,구시선,배승훈,박병현,안선호,송주흥 圓光大學校 醫科學硏究所 1996 圓光醫科學 Vol.12 No.2
To elucidate the incidences and the clinical characteristics of glomerular diseases in our hospital, we reviewed the clinical records and histological findings of the 117 cases, which were diagnosed as one of the glomerular disease in renal biospy for about 6 years since 1991. In these 117 cases, 74 cases (63.2 %) fell into primary glomerulonephritis(GN), 18 cases (15.4%) into secondary GN, 2 cases (1.7 %) into end stage kidney, 4 cases (3.4%) into tubulointerstitial disease and the biopsy samples were inadequate for diagnosis in 19 cases. In primary glomerular diseases, most common pathologic diagnosis was IgA nephropathy (36.5 %}, followed by minimal change nephrotic syndrome (29.7%). The incidence of IgA nephropathy would be increased if we had biopsied every asymptomatic urinary abnormality (AUA) patients. Systemic lupus erythematosus (SLE) . hepatitis B accounted for most of secondary GN in our cases. One case of progressive scleroderma was included in this secondary GN. Minimal change nephrotic syndrome (22 cases) was the most common cause of nephrotic syndrome, followed by membranous GN (9 cases) and IgA nephropathy (8 cases). 2 cases of primary amyloidosis were presented with nephrotic syndrome. Nephrotic syndrome as presenting symptom in our IgA nephropathy patients was higher than in other studies, which may be due to indication bias for renal biopsy. We suggest that renal biopsy should be done in adult nephrotic syndrome and in SLE, because various kind of glomerular diseases can develop nephrotic syndrome in adult, renal biopsy can affect the treatment and prognosis in each patients and renal biopsy also determines the extent of renal involvement in SLE on which the treatment depends. In AUA urinary patients, renal biopsy could be reserved for the patients who show declining of GFR or rising of proteinuria. Because IgA nephropathy account for most of AUA. and there is no specific treatment for IgA nephropathy, and renal biopsy in those cases is helpful in ruling out the patients who need no treatment.
林道의 迂廻係數 算出 : 江陵營林署의 國有林道를 대상으로 National forest roads of Kangnung national forest office
曺丘鉉,池炳潤,車斗松 江源大學校 林科大學 森林科學硏究所 1994 Journal of Forest Science Vol.10 No.-
본 연구는 林道開設을 위한 기초자료로서 江陵營林署의 5개 管理所(강릉, 양양, 삼척, 정선, 평창관리소)의 國有林道를 대상으로 傾斜別 林道迂廻係數를 산출하였다. 그 결과, 林道迂廻係數는 경사도 5%이하에서 0.33, 6∼10%에서 0.39, 11∼15%에서 0.50, 16∼20%에서 0.58, 및 21%이상에서는 0.63으로 나타났다. This study was carried out to estimate forest road elongation coefficients for providing the basic information of forest road construction. As the results, road elongation coefficients were calculated 0.33 less than 5% of road gradient, 0.39 between the gradient of 6% and 10%, 0.50 between the gradient of 11% and 15%, 0.58 between the gradient of 16% and 20%, and 0.60 greater than the gradient of 20%.
졸-겔공정을 이용한 초고용량 캐패시터용 Nickel oxide 나노입자의 합성
김두현,송기창,변태강,송연호 조선대학교 생산기술연구소 2003 生産技術硏究 Vol.25 No.2
The Ni (OH)₂ nanoparticles with average diameter of 50 nm were synthesized by hydrolyzing nickel acetate with water, and were dispersed in the distilled water to prepare the coating solution. The electrodes for supercapacitor were prepared by dip-coating the coating solution on the Ni-foam. The electrodes heat-treated at several temperatures showed the highest specific capacitance, 160 F/g, at 250℃. It can be explained that the Ni(OH)₂ particles heat-treated at 100 and 200℃ on the electrodes contained the impurities such as acetate groups in the pores, and resulted in low specific surface areas. However, as the calcination temperature increases. the impurities incorporated in the pores are removed at 250℃, and thus, the particles on the electrodes show the highest specific surface area (177 ㎡/g).
Song Du Hyun,Kim Nayoung,Jo Hyeong Ho,Kim Sangbin,Choi Yonghoon,Oh Hyeon Jeong,Lee Hye Seung,Yoon Hyuk,Shin Cheol Min,Park Young Soo,Lee Dong Ho,Kang So Hyun,Park Young Suk,Ahn Sang-Hoon,Suh Yun-Suhk 거트앤리버 소화기연관학회협의회 2024 Gut and Liver Vol.18 No.2
Background/Aims: Synchronous multiple gastric cancer (SMGC) accounts for approximately 6% to 14% of gastric cancer (GC) cases. This study aimed to identify risk factors for SMGC. Methods: A total of 14,603 patients diagnosed with GC were prospectively enrolled. Data including age, sex, body mass index, smoking, alcohol consumption, family history, p53 expression, microsatellite instability, cancer classification, lymph node metastasis, and treatment were collected. Risk factors were analyzed using logistic regression analysis between a single GC and SMGC. Results: The incidence of SMGC was 4.04%, and that of early GC (EGC) and advanced GC (AGC) was 5.43% and 3.11%, respectively. Patients with SMGC were older (65.33 years vs 61.75 years, p<0.001) and more likely to be male. Lymph node metastasis was found in 27% of patients with SMGC and 32% of patients with single GC. Multivariate analysis showed that SMGC was associated with sex (male odds ratio [OR], 1.669; 95% confidence interval [CI], 1.223 to 2.278; p=0.001), age (≥65 years OR, 1.532; 95% CI, 1.169 to 2.008; p=0.002), and EGC (OR, 1.929; 95% CI, 1.432 to 2.600; p<0.001). Survival rates were affected by Lauren classification, sex, tumor size, cancer type, distant metastasis, and venous invasion but were not related to the number of GCs. However, the survival rate of AGC with SMGC was very high. Conclusions: SMGC had unique characteristics such as male sex, older age, and EGC, and the survival rate of AGC, in which the intestinal type was much more frequent, was very good (Trial registration number: NCT04973631).
액체금속취화 결함의 영향이 반영된 등가구조응력법을 이용한 점용접 시편 피로 수명 평가
송현규(Hyun-Kyu Song),김승재(Seung-Jae Kim),이현재(Hyun-Jae Lee),김윤재(Yun-Jae Kim),최두열(Du-Youl Choi),엄상호(Sang-Ho Uhm) 대한기계학회 2018 大韓機械學會論文集A Vol.42 No.11
최근 차체 경량화 및 충돌안전 법규 강화에 따른 기가급 초고강도강 재료의 적용이 점점 확대되고 있으나, 기가급 초고강도강 아연도금강판의 점용접에서 발생하는 액체금속취화(Liquid Metal Embrittlement, LME) 결함으로 인해 그 적용이 지연되고 있다. 이는 LME 결함의 허용 기준에 대한 구체적 제시를 위한 데이터가 부족하고, 실험적으로 다양한 결함형태 및 크기를 모사하기에는 한계가 존재하기 때문이다. 이에 본 연구에서는 다양한 점용접부 피로실험결과에 등가구조응력법을 적용하여 시편 형상과 하중형태에 무관한 통합피로평가선도를 제시하고 이를 통해 LME 결함의 영향을 평가하였다. In recent years, the application of ultra-high strength steels has increased owing to improvements in the weight reduction of automobiles and the strengthening of collision safety regulations. However, their application has been delayed owing to liquid metal embrittlement (LME) defects during the spot-welding process of ultra-high strength steel galvanized steel sheets. This is because of the absence of test data for exact criteria about LME defects, but experimentally analyses of the various defect types and sizes are virtually impossible. Therefore, in this study, we apply the equivalent structural stress method to some spot-welding fatigue test results, and we derive a master stress – fatigue life curve regardless of the specimen shape and load type. In addition, we evaluated the effect of LME defects.