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배재만 ( Jae Man Bae ),박경아 ( Keoung Ah Park ),김희승 ( Hee Seoung Kim ),이문휘 ( Mun Hwi Lee ),문영진 ( Young Jin Moon ),이영미 ( Young Mi Lee ),강순범 ( Soon Beom Kang ),이효표 ( Hyo Pyo Lee ) 대한산부인과학회 2006 Obstetrics & Gynecology Science Vol.49 No.9
Liposarcoma is the most common soft tissue sarcoma in adults and accounts for 9.8% to 16% in all soft tissue sarcomas. The common sites include limbs, buttocks, and retroperitoneum, et al. The early diagnosis of retroperitoneal liposarcoma may be difficult because of due to the late onset of symptoms and the tumors are frequently noted in a large size with the involvement of adjacent structures. Surgical therapy remains the most effective modality for the treatment of retroperitoneal liposarcoma. But, complete surgical resection of these tumors is often challenging and, at times, may be impossible. So, adjuvant radiation therapy is necessary for the improvement of prognosis in many cases. We report a case of retroperitoneal liposarcoma which was treated with complete surgical resection followed by adjuvant radiation therapy.
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.
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.
Na환원법에 의한 희석제량에 따른 탄탈 분말 제조와 특성
윤재식,박형호,배인성,김병일,정성만,Yoon, Jae-Sik,Park, Hyeong-Ho,Bae, In-Sung,Kim, Byung-Il,Jung, Sung-Man 한국재료학회 2002 한국재료학회지 Vol.12 No.9
High-pure tantalum powder was fabricated through Na reduction process and has been produced by using $K_2$TaF$_{7}$, and KCI, KF for raw material and diluent, respectively. A raw material and diluent were charged at the hestalloy bomb by the weight rate of 1:2, 1:1, 1:0.5 and 1:0.25 each other, investigated properties of morphology, chemical composition and yield and particle size after reduced. Ta metal has been achieved by reduction of $K_2$$TaF_{7}$ 500g with 1% sodium in excess of stoichiometric amount in the charge at a reduction temperature of $850^{\circ}C$ for 3hours. According to amount of the diluent, a formation of the powder doesn't have an effect. The diluent prevented the temperature rising caused from the heat of reaction and it maintained the speed of reducing reaction. But in the mixture ratio of raw material and diluent in the 1 : 2 and 1 : 0.25, an oxide and partially not reacted K were detected. As the amount of diluent increased, the size of tantalum powder decreased. According as raw material and the mixture ratio of diluent change from 1:0.25 to 1:2, the size is decreased from 5$\mu\textrm{m}$ to 1$\mu\textrm{m}$, and a particle size distribution which is below 325 mesh in fined powder increases from 71% to 83%. In the case of average size of Tantalum powder which is the mixture ratio (1:0.5), we would get the Ta powder with grain size about 3$\mu\textrm{m}$, which come close to the average size (2~4$\mu\textrm{m}$) of tantalum powder which is used commonly in the present is Ta powder about 3$\mu\textrm{m}$.