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주재옥,홍성희,이종훈,이승재 대한미용성형외과학회 2007 Archives of Aesthetic Plastic Surgery Vol.13 No.2
Augmentation rhinoplasty using silicone implant is one of the most common cosmetic procedures in Korea, but is not without several complications such as exposure of the implant, its deviation and deformity. Above all, infection and extrusion through the skin is most serious complication. The purpose of this study was to determine the type of microbial colonization on silicone implant removed from symptomatic patients and to prevent from the infection. Over the past 11 years, from February of 1996 to February of 2007, we have done 134 aesthetic rhinoplasties using silicone implant in our clinic, patient ages ranged from 15 to 62 years with an average of 29.2 years. 78 percent of patients (105) were female, and 22 percent (29) were male. Among them, four cases had the local infection. The infection rate was 2.9 percent. Total six cases of implant including the other two case augmented elsewhere having the infection were removed and submitted for Gram stain, standard aerobic and anaerobic bacterial culture, and fungal cultures. Staphylococcus aureus was isolated most frequently (four cases), followed by Pseudomonas aeruginosa (one case) and Proteus mirabilis (one case). No fungal infections were identified. In order to reduce the infection rates after augmentation rhinoplasty using silicone implant, rhinorrhea as a source of bacterial nutrients should thoroughly be managed perioperatively. The hairs of the nostril should appropriately be shaved, and the patient's entire face and internal nares meticulously prepared. The implant should be shaped to be shorter, smaller and thinner, appropriately to the patient's nasal phenotype. Also, subperiosteal implantation rather than subcutaneous or subfascial is better choice.
주재옥,홍성희,이종훈,김동훈 대한성형외과학회 2007 Archives of Plastic Surgery Vol.34 No.1
Purpose: Although liposarcoma is the second most common soft tissue sarcoma in adults, the incidence of liposarcoma of the head and neck is rare. There is only one reported case in Korea and moreover, only in adolescence. We report a case of liposarcoma on the neck in a 32-year-old male in adult. Methods: The patient had a slow growing, none tender mass on the posterior neck without lymphadenopathy, which has been present for 3 years and recurred twice during that time. MRI showed a 1.5cm sized ovoid, well demarcated mass that was located in the subcutaneous layer of the posterior neck.Results: The mass was surgically removed. The resection margin was free of tumor on frozen biopsy and histopathologic examination indicated myxoid and round cell liposarcoma. The whole body F-18 FDG PET-CT applied on the fourteenth day postoperatively, revealed a moderate FDG-uptaking soft tissue lesion showing postoperative wound healing process on the posterior neck region and there was no distant metastasis.Conclusion: Liposarcoma is the second most common soft tissue sarcoma in adults. But, it rarely involves the head and neck region. Prognosis is principally dependent on histologic subtype and grade. Low grade liposarcoma such as well differentiated and myxoid liposarcoma tend to recur locally, rarely metastasize. On the other hand, high grade liposarcoma such as round cell and pleomorphic liposarcoma have higher rates of local recurrence and distant metastasis. Complete surgical excision provides the most effective means of treatment. Radiotherapy or chemotherapy can be used as an asjunctive treatment modality.
CFD 시뮬레이션을 이용한 계절의 주풍향, 부풍향별 도시 기류환경 예측 연구
윤재옥(Yoon Jae-Ock),주재성(Joo Jea-Sung) 대한건축학회 2011 대한건축학회논문집 Vol.27 No.1
At the city, outdoor wind environment of building circumstance is often changed because of high-rise buildings. We made three models, one of them is a low-rise residential area in C city, another is a center commercial area in C city, the other is a mid-low residential area in S city. To simulate wind environment of these three areas, we used CFD(Computational Fluid Dynamics) method. For the CFD simulations, boundary conditions was selected for winter season(January) and middle season(October). Mean wind velocity, prevailing wind direction and secondary prevailing wind direction of Korea Meteorological Administration Data was used for the boundary conditions. Center area of commercial zone in C city was modeled as the present layout. The same Meteorological Administration Data was used for CFD simulation at two cases in city C. The direction of air flow around buildings was changed by layouts of apartments and buildings. Sometimes the wind speed increased a lot, and sometimes the air around buildings was still. We analyzed wind environment around buildings with CFD results at low-rise residential area in C city and in S city.
대학캠퍼스 외부공간의 가로등 설치에 관한 LCC분석 연구
주재성(Joo Jae-Sung),김호영(Kim Ho-Young),김병렬(Kim Byung-Ryul),정종림(Jung Jong-Rim),윤재옥(Yoon Jae-Ock) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
This study evaluates the economic efficiency of road lamps in the University Campus with a Life-cycle cost(LCC) technique. In order to determine the most suitable illumination facilities, Induction lamp, Metal halide lamp and Natrium lamp is simulated. We study characteristics of each lamp system, which are illumination efficiencies and costs. Initial investment cost of an induction lamp is higher than two other alternatives. However, total cost of Metal halide lamp is lower than to other alternatives.
만성골수염에 의해 노출된 경골에 대한 근육이전술 2 예 보고
양정함,주재옥,나수균,최창욱,김학현 순천향대학교 1982 논문집 Vol.5 No.4
Treatment for the exposed tibia by chronic osteomyelitis is very difficult because of its anatomical charactericity, Since Ralph Ger introduced the use muscle as a transposed flap, as a practical single stage technique to accomplish coverage for these difficult ulcerative lesions, many orthopaedic surgeons operated for the exposed tibia. Peroneous longus muscle was translated for the two case of exposed tibia by chronic osteomyelitis at the department of Orthopaedic surgery, Soon Chun Hyang College, and the authors reported the result of muscle transfer in this paper.
노재성,조성준,주재옥 에스케이텔레콤 (주) 2004 Telecommunications Review Vol.14 No.4
유선망을 기반으로 개발된 TCP/IP(Transmission Control Protocol/Internet Protocol)는 유선망의 네트워크 혼 잡을 효율적으로 제어하여 신뢰성있는 데이터 전송과 함께 높은 전송율을 달성할 수 있었다. 그러나 TCP가 높은 BER을 가지는 무선환경에 적용되면 낮은 전송율과 긴 지연시간을 초래하여 심각한 성능저하를 가져온다. 이것은 TCP 송신단이 무선링크상의 에러를 네트워크 혼잡으로 잘못 판단하기 때문이다. 본 논문에서는 Snoop 프로토콜을 기반으로 기지국에 적응 타이머(adaptive timer)를 적용한 새로운 기법을 제안한다. 이 기법은 무선 패킷 손실을 빠 르게 복구하기 위하여 무선링크의 상태에 따라서 기지국의 지역 재전송 타이머를 효과적으로 조정한다. 시뮬레이션을 통하여 제안한 방법이 무선 패킷 손실을 효과적으로 복구하여 TCP 전송율을 향상시킬 수 있음을 확인하였다.