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슬관절의 전방 동통을 유발하는 국소형 색소 융모 결절성 활액막염 - 1 례 보고 -
배대경(Dae Kyung Bae),권오수(Oh Soo Kwon),차재룡(Jae Ryong Cha),신동준(Dong Jun Shin),정찬종(Chan Jong Jung) 대한슬관절학회 2001 대한슬관절학회지 Vol.13 No.2
Localized pigmented villonodular synovitis(PVNS) ia a benign monoarticular proliferative disorder of the synovium that may affect any joint but is frequently found in the knee. The localized form is less frequent than diffuse one and characterized by limited involvement of the synovium. The shape of localized form is generally presented as a nodular, pedunculated mass protruding into the articular caviry. Localized PVNS causing anterior knee pain must be differenciated from pathologic synovial plica syndrome, chondromalacia patellae, patella subluxation and benign soft tissue tumors. We experienced a case of localized form of PVNS in the anterior compartment of the knee which causes anterior knee pain and locking.
증착공정 및 환원분위기 열처리가 Sb-Te 박막의 열전특성에 미치는 영향
배재만,김민영,오태성,Bae, Jae-Man,Kim, Min-Young,Oh, Tae-Sung 한국마이크로전자및패키징학회 2010 마이크로전자 및 패키징학회지 Vol.17 No.4
증착공정 및 환원분위기 열처리가 p형 Sb-Te 박막의 열전특성에 미치는 영향을 연구하였다. $Sb_2Te_3$ 잉곳을 분쇄한 분말을 증착원으로 사용하여 형성한 박막은 $2.71{\times}10^{-4}W/m-K^2$, Sb와 Te 혼합분말을 증착원으로 사용하여 형성한 박막은 $0.12{\times}10^{-4}W/m-K^2$, Sb와 Te의 동시 증착으로 제조한 박막은 $0.73{\times}10^{-4}W/m-K^2$의 출력인자를 나타내었다. $300^{\circ}C$에서 2시간 유지하는 환원분위기 열처리에 의해 $Sb_2Te_3$ 잉곳을 분쇄한 분말을 증착원으로 사용하여 형성한 박막의 출력인자가 $24.1{\times}10^{-4}W/m-K^2$로 향상되었으며, Sb와 Te의 동시증착으로 제조한 박막의 출력인자는 $40.2{\times}10^{-4}W/m-K^2$로 크게 향상되었다. Effects of evaporation processes and a reduction annealing on thermoelectric properties of the Sb-Te thin films prepared by thermal evaporation have been investigated. The thin film evaporated by using the powders formed by crushing a $Sb_2Te_3$ ingot as an evaporation source exhibited a power factor of $2.71{\times}10^{-4}W/m-K^2$. The thin film processed by evaporation of the mixed powders of Sb and Te as an evaporation source showed a power factor of $0.12{\times}10^{-4}W/m-K^2$. The thin film fabricated by coevaporation of Sb and Te dual evaporation sources possessed a power factor of $0.73{\times}10^{-4}W/m-K^2$. With a reduction annealing at $300^{\circ}C$ for 2 hrs, the power factors of the films evaporated by using the $Sb_2Te_3$ ingot-crushed powders and coevaporated with Sb and Te dual evaporation sources were remarkably improved to $24.1{\times}10^{-4}W/m-K^2$ and $40.2{\times}10^{-4}W/m-K^2$, respectively.
파단전 누설 평가를 위한 Ramberg - Osgood 상수 결정법
배경동(Kyung Dong Bae),류호완(Ho Wan Ryu),김윤재(Yun Jae Kim),김진원(Jin Weon Kim),김종성(Jong Sung Kim),오영진(Young Jin Oh) 대한기계학회 2015 大韓機械學會論文集A Vol.39 No.7
본 논문은 이전 연구에서 제시한 여러 가지 Ramberg-Osgood 상수 결정법을 비교하여 파단전 누설평가에 사용되기 가장 적합한 상수 결정법을 선정하였다. 비교에 사용한 재료는 운전온도인 316℃에서 실험한 SA312 TP316 과 SA508 Gr.1a 이. 상수 결정법을 선정하기 위해 실제 응력-변형률 데이터를 모두 이용하는 증분 소성 이론과 Ramberg-Osgood 상수를 이용하는 변형 소성이론을 유한요소 해석에 적용하여 계산한 J 적분과 균열 열림 변위를 비교하였다. 비교 결과에서 증분 소성 이론 결과와 가장 잘 일치하는 상수 결정법을 최종적으로 파단전 누설 평가에 적합한 방법으로 선정하였다. In this study, a method for determining Ramberg?Osgood constants for leak-before-break evaluation was investigated. The Ramberg?Osgood constants were calculated for SA312, TP316, and SA-508 Gr.1a in an operating temperature of 316 oC. Incremental plasticity, using stress?strain data obtained from experiment, and deformation plasticity, using the Ramberg-Osgood constants, were considered in a finite element analysis. Using incremental plasticity and deformation plasticity, J-integrals and crack opening displacement values were calculated and compared. By comparing the results of incremental plasticity and deformation plasticity, a suitable method for determining Ramberg?Osgood constants for leak-before-break evaluation was confirmed.
n형 Bi-Te와 p형 Sb-Te 증착박막으로 구성된 in-plane 열전센서의 형성공정 및 감지특성
배재만,김민영,오태성,Bae, Jae-Man,Kim, Min-Young,Oh, Tae-Sung 한국마이크로전자및패키징학회 2012 마이크로전자 및 패키징학회지 Vol.19 No.1
유리기판에 n형 Bi-Te 열전박막과 p형 Sb-Te 열전박막을 진공증착하여 in-plane 열전센서를 형성한 후, 열전센서의 감지특성을 분석하였다. 열전센서를 구성하는데 사용한 n형 Bi-Te 증착박막은 -165 ${\mu}V$/K의 Seebeck 계수와 $80{\times}10^{-4}W/K^2-m$의 출력인자를 나타내었으며, p형 Sb-Te 증착박막은 142 ${\mu}V$/K의 Seebeck 계수와 $51.7{\times}10^{-4}W/K^2-m$의 출력인자를 나타내었다. 이와 같은 n형 Bi-Te 및 p형 Sb-Te 박막 15쌍으로 구성된 열전센서는 2.8 mV/K의 감지도를 나타내었다. An in-plane thermoelectric sensor was processed on a glass substrate by evaporation of the n-type Bi-Te and p-type Sb-Te thin films, and its sensing characteristics were evaluated. The n-type Bi-Te thins film used to fabricate the inplane sensor exhibited a Seebeck coefficient of -165 ${\mu}V$/K and a power factor of $80{\times}10^{-4}W/K^2-m$. The p-type Sb-Te thin film used to fabricate the in-plane sensor exhibited a Seebeck coefficient of 142 ${\mu}V$/K and a power factor of $51.7{\times}10^{-4}W/K^2-m$. The in-plane thermoelectric sensor consisting of 15 pairs of the n-type Bi-Te and the p-type Sb-Te evaporated thin films exhibited a sensitivity of 2.8 mV/K.
간장 ( 肝臟 ) 및 담도 ( 膽道 ) : 고령자에서 간질환의 임상적 고찰
배정동(Jung Dong Bae),최재진(Jae Jin Choi),현대성(Dae Sung Hyun),임달수(Dal Soo Lim),오성윤(Sung Yoon Oh) 대한소화기학회 1991 대한소화기학회지 Vol.23 No.2
N/A Recently, aged patient admitted more frequently due to increased longevity and accessibility to medical center. This report is clinical review of 92 patients who were diagnosed as liver disease at the Department of Internal Medicine, Catholic Hospital from January, 1988 to December, 1990. The following results were obtained. 1) Liver cirrhosis was 67%, hepatoma was 29% type B hepatitis was 4%, and combined liver cirrhosis and hepatoma was 5%. 2) The male to female ratio was 1.5 : 1 in liver cirrhosis and 2 : 1 in hepatoma. 3) HBs antigenemia was 40%; in liver cirrhosis and 29% in hepatoma. 4) 50% of liver cirrhosis patients and 33% of hepatoma patients had history of alcohol drinking. 5) In liver cirrhosis, the symptoms and signs on admission were abdominal pain (45%), hematemesis (16%), and jaundice (14%), and in hepatoma, those were abdominal pain (74%) and weight loss (11%). 6) Overall hospital mortality was 41%. and the cause of death was hematemesis (6 cases) and hepatic encephalopathy (6 cases) in liver cirrhosis, and hepatic failure (15 cases) in hepatoma.
배경동(Kyung-Dong Bae),류호완(Ho-Wan Ryu),김윤재(Yun-Jae Kim),오영진(Young-Jin Oh) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Complex crack is the form of crack existing through-wall crack and surface crack at the same time. Complex crack is mainly caused by PWSCC phenomenon in pipe with overlay maintenance welding. Unlike through-wall cracked pipe and surface cracked pipe, complex cracked pipe has a complex behavior. Generally, through-wall cracked pipe which has thickness of complex cracked pipe ligament is used to evaluate complex cracked pipe. However, this method has conservative results in limit load evaluation (netsection collapse load). Therefore, in this paper, equivalent thickness concept is introduced in method for evaluation complex cracked pipe and this method using equivalent thickness is validated.