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이영수,장태원,유호대,정만홍,이용환,서지영,허 방,이재성 大韓産業醫學會 1999 대한직업환경의학회지 Vol.11 No.1
Asbestosis is the disease of pulmonary fibrosis caused by the inhaled asbestos fibers, and could be diagnosed clinically, in the case of exposure history to asbestos is proved, by clinical symptoms of dyspnea or dry cough, physical examonation findings, and the radiographic features. But many othder inorganic dusts would show similar findings in the chest radiogram and sometimes the exposure history is obscure, so for the exact diagnosis of asbestosis lung biopsy is needed. In Korea, there have been some reports of survey in the workplace where asbestos is handled or of asbestos related diseases. This is a case report of asbestosis with accompanying pleural plaques, who had the occupational exposure to asbestos for 30 years and the consistent clinical, radiographic and pathological findings in the lung tissue obtained by the videoscope assisted thoracoscopic biopsy(VATS).
히스토아크릴을 이용한 십이지장 궤양 출혈의 지혈 후 발생한 급성췌장염
유재훈,문원,노지훈,구동영,조영화,김기수,윤준모 고신대학교 의과대학 2010 고신대학교 의과대학 학술지 Vol.25 No.1
Upper gastrointestinal bleeding is common and potentially life threatening medical emergency. Emergency endoscopy is the first choice of diagnostic and treatment measure for patients with active upper gastrointestinal bleeding. Histoacryl should be considered a second-line treatment modality when conventional treatments were failed. However, it might cause several complications. Herein, we report a case of acute pancreatitis developed after histoacryl injection therapy for active duodenal ulcer bleeding. A 71-year-old man was admitted with melena and hematemesis. On emergency endoscopy, a 2 cm sized active ulcer with bleeding from an exposedvessel was seen at the duodenal bulb. Attempts to arrest the bleeding with hemoclipping and submucosal epinephrine injection were tried, but failed. We changed the method to endoscopic histoacryl injection, and obtained hemostasis immediately. A few hourslater, after successful hemostasis, patient complained diffuse abdominal pain. Ultrasonography revealed hyperechoic heterogenous diffuse pancreatic enlargement and right pararenal space fluid collection, this ultrasonographic findings and elevated serum pancreatic enzymes are compatible with acute pancreatitis.
Yeong Ji Yu,김태호,오정환,정우철 대한상부위장관ㆍ헬리코박터학회 2019 Korean Journal of Helicobacter Upper Gastrointesti Vol.19 No.3
Background/Aims: This study aimed to evaluate the clinicopathological parameters of gastric gastrointestinal stromal tumors (GISTs) and to investigate the effect of tumor site on clinical outcomes. Materials and Methods: Patients treated for a surgically confirmed gastric GIST were retrospectively evaluated between January 2001 and June 2016. The risk level was determined on the basis of the tumor size and number of mitoses. The risk level, recurrence rate, and survival rates were evaluated on the basis of the site of the gastric GISTs. Results: The 97 patients identified included 42 men and 55 women. The median follow-up period was 36 months (range: 12~72 years). Of the 97 patients, 57 (58.7%) and 40 (41.3%) patients had proximally and distally located gastric GISTs, respectively. The high- and low-risk groups had higher proportions of proximally and distally located tumors, respectively (P=0.033). The recurrence rates of proximal and distal GISTs were 8.8%, and 2.5%, respectively (P=0.307). The overall survival rate was not associated with the site of the gastric GISTs (P=0.549). Conclusions: No relevant associations were found among recurrence, overall survival, and gastric GIST location.
( Ji Yeong Kwak ),( Sang Goon Shim ),( Kil Jong Yu ),( Dae Hyeon Cho ),( Ji Eun Oh ),( Chang Uk Jeong ),( Hyun Chin Cho ),( Kwang Min Kim ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background: The prevalence of colorectal adenoma(CRA) is rapidly increasing in average- risk population over 40 years of age in Korea. But, there was few available data about CRA in young adults under 40 years of age. Methods: This was a cross-sectional study to evaluate prevalence and risk factor of CRA in Korean young adults 20 to 39 years of age that included asymptomatic young adults who underwent colonoscopy screening at first time as part of employer-provided health wellness program at the Health Promotion Center, Samsung Changwon Hospital from January 2011 to December 2013. Finally, 4286 subjects with no risk of colorectal cancer (personal history of colorectal polyp, inflammatory bowel disease, or family history of colorectal cancer) were included and we analyzed prevalence and characteristics of CRA by classifying into two groups with CRA group (n=497) and CRA-free group (n=3789). Also, we performed logistic regression model to confirm risk factor of CRA in young adults. Results: Among 4286 subjects in young adults under 40 years of age, 497 (11.6%) subjects had one or more colorectal adenomas and advanced adenomas were found in 39 (0.9%) subjects. The prevalence of CRA in the each decade of age group was 5.4% (33/608) in 20 to 29 years of age and 12.6% (464/3678) in 30 to 39 years of age. In multivariable regression analysis, age over 30 years old (OR, 2.37; 95% CI, 1.64-3.43), current smoker (OR, 1.48; 95% CI, 1.15-1.92) and alcohol consumption (OR, 1.30; 95% CI, 1.03-1.64) were associated with increased risk of CRA in young adults. Conclusions: The prevalence of CRA and advanced adenoma in Korean young adults was 11.6% and 0.9%, comparable to those of previous small studies. Age, smoking and alcohol consumption were associated with CRA in young adults.
김유용 ( Yu Yong Kim ),임성윤 ( Seongyoon Lim ),유석철 ( Seokcheol Yu ),유영지 ( Yeong Ji Yu ),오정주 ( Jungjoo Oh ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.2
2013년 농업기계 사고실태 조사에 의하면 트랙터가 전체 농업기계 사고의 20%를 차지하였으며, 전도와 추락이 트랙터 사고의 63%를 차지하였다. 전도와 추락사고시 운전자의 생명을 보호하기 위해 농업기계화촉진법에 따라 OECD (경제협력개발기구) 보호구조물 표준시험코드에 따라 안전이 확보된 보호구조물을 농용트랙터에 부착하고 있다. OECD 표준시험코드는 트랙터 등 수입국이 다른 나라에서 수행되어진 시험 결과에 대하여 신뢰할 수 있는 공통된 시험방법으로 무역의 편의성과 국제적으로 비교 가능한 정보를 제공하기 위해 운영되고 있다. 이 시험방법은 트랙터에 보호구조물을 부착하고 전도되었을 때 상당한 에너지로 부하를 가하여 안전도를 평가하는 파괴시험방법으로 시험용 보호구조물 제작 및 설치 등에 따른 비용 및 인력이 많이 요구된다. 최근 OECD는 비용 및 인력을 줄이기 위해 최초 트랙터에 대하여는 현재 시험코드 준용하고 이후 트랙터에 대하여는 가상시험을 실시하는 방안에 대하여 논의하고 있다. 본 연구는 가상시험에 필요한 보호구조물 재질별 물성값을 표준화하기 위해 수행되었다. 시험편은 국내 3사에서 제조 판매되고 있는 보호구조물의 재질 14종을 KS B 0801:2007 판형 5호에 따라 열 등으로 영향받지 않는 워터제트 커팅 방법으로 제작되었다. 시험은 국제표준 물성치로 활용하기 위해 국제공인시험기관(한국산업기술시험원)에 의뢰하여 KS B 0802 (금속재료 인장 시험방법)에 따라 1개의 시험편에 대하여 실시되었으며, 시험 항목은 인장강도, 항복강도, 연신율, 탄성계수, 포와송비 이었다. 재질별로 구하여진 탄성계수, 인장강도, 연신율, 포와송비, 진변형률은 각각의 재질 시험 데이터를 이용하여 KS B 0802:2008에 따라 구해졌다. 시험결과 동일한 재질이더라도 생산지에 따라 물성치의 차이가 나타났다. 하나의 예로 각 사별 SS400의 탄성계수는 189, 207, 207이고, 항복강도는 260, 310, 284, 인장강도는 356, 465, 448, 연신율은 47, 32, 35, 포와송비는 0.282, 0.287, 0.288이고, 가로 진변형률은 150.88, 139.06, 139.27, 세로 진변형률은 534.63, 484.55, 483.67이었다. 제조업체는 생산지에 따라 재질의 따라 물성치가 다르므로 제조업체는 제품관리에 주의를 해야 할 것으로 판단된다. 재질의 물성치 표준화를 위해서는 추가 반복 시험이 필요하다.
BIPV(Building Integrated Photovoltaic)의 설치 안전성 기준을 위한 기초연구
유지숙(Yu, Ji-Suk),서진이(Seo, Jin-Yi),김지혜(Kim, Ji-Hye),이효영(Lee, Hyo-Yeong),홍정현(Hong, Jeong-Hyun),김준태(Kim, Jun-Tae) 대한건축학회 2018 대한건축학회 학술발표대회 논문집 Vol.38 No.2
The use of BIPV system is used as building exterior material, which reduces the material cost in construction and contributes to the building value by using environmentally friendly building exterior elements. Further, no additional installation site is required, and power loss such as power transmission can be minimized due to the same power generation site and consumption site. However, the contents of the BIPV frame structure and the performance including the electric wiring are not included in the standards and guidelines. In this paper, the guidelines for the construction direction (Structural and electrical equipment, etc.) of the BIPV system for the safety standard of the domestic BIPV installation are presented.