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이진목(Jinmok Lee),오승훈(Seunghun Oh),고광수(Kwang-soo Koh),권혁일(Hyuuk-il Kwon),박경훈(Kyung-hun Park),한경식(Kyung-sik Han) 전력전자학회 2011 전력전자학술대회 논문집 Vol.2011 No.7
일반적인 승압 컨버터와 H-bridge 인버터로 구성되는 비절연 계통연계형 태양광 인버터 시스템의 효율을 높이기 위해 H-bridge의 스위칭에 적합한 Unipolar 스위칭 방식을 선정하고, 또 SiC 다이오드를 사용함으로써 전체 효율을 향상시켰으며 이를 시뮬레이션과 실험으로 보여준다.
하악 외측피질골 절제술을 동반한 다단계 하악 우각부 윤곽성형술
이한주(Han joo Lee),박현욱(Hyun wook Park),고광수(Kwang soo Koh),허원실(Won shil Huh) 대한구강악안면외과학회 2000 대한구강악안면외과학회지 Vol.26 No.2
The mandibular contour determines the shape of the lower part of the face and thus influences the appearance of the face. A patient with a large, squarish, or broad face who desires a small, round, or slender face can undergo mandibular contouring surgery to reduce the width of the lower face. The successful correction of a prominent mandibular angle by conventional angle ostectomy has been reported. But, in the majority of patients with a widened facial appearance, both the mandibular angle and part of the mandibular body anterior to it are protuberant laterally, so both must be resected. The purpose of this study is to introduce a new method of performing mandibular contouring surgery, more effectively and easily, and to reduce postoperative complication and evaluate its results. We treated 6 patients who has prominent mandibular angle using multiple step osteotomy with angle-splitting ostectomy. The advantages of this new method are as following. (1) easily performable (2) effective mandibular contouring surgery by reducing the width of lower face (3) producing a natural relief of the mandibular angle (4) low risk of soft tissue damage and complications (5) shortening of the operation time. etc.