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프리텐셔너가 장착된 시트벨트 시스템의 관성잠김 안전버클 개발
국민구(Min-Gu Kuk),탁태오(Tea-Oh Tak),박재순(Jae-soon Park),신승언(Seung-Eon Shin),김대희(Dae-Hee Kim),김종각(Jong-Kag Kim),유병개(Byoung-Gae You),김철현(Chul-Hyun Kim) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
To improve passenger safety, seatbelt systems with pre-tensioner that tightens seatbelt webbing using explosive just before collision are widely used these days. Even though seatbelt must not unlatched without passenger's operation, explosive power of pre-tensioner can cause unlocking of a buckle. To prevent the unlocking, an Anti-g mass that blocks displacement of the release button has been attached to the buckle. In this study, the dynamics and statics of locking mechanism associated with operation of Anti-g buckle has been theoretically investigated, and important design variables that affect the operation of Anti-g buckle have been identified. Through the total seatbelt system's dynamic simulation using force and displacement inputs obtained from seatbelt sled test, design of the proposed Anti-g buckle has been validated.
증예(症例) : 만성 폐쇄성 폐질환 환자에서 기관지유래암종으로 오인된 기관지 방선균증 1례
김소영 ( So Young Kim ),최영훈 ( Young Hun Choi ),김국민 ( Kuk Min Kim ),이태환 ( Tae Hwan Lee ),강선미 ( Seon Mi Kang ),이윤재 ( Yoon Jae Lee ),고강석 ( Kang Suk Ko ),김이식 ( Yi Shik Kim ),김재문 ( Jae Moon Kim ),김희정 ( Hui Ju 전북대학교 의과학연구소 2006 全北醫大論文集 Vol.30 No.1
방선균증은 혐기성 그람 양성균인 Actinomyces 속(genus)에 의해서 유발되는 만성 화농성 감염성 질환이다. 기관지 방선균증(endobronchial actinomycosis)은 국내의 적으로 그 빈도가 매우 드문 질환으로 기관지 결핵(endobronchial tuberculosis) 혹은 기관지 유래 암종(bronchogenic carcinoma)으로 잘못 의심되는 경우가 있다. 본 저자들은 50갑년의 흡연력과 만성 폐쇄성 폐질환의 폐암 위험 인자를 가진 65세 남자 환자가 객혈을 주소로 내원하여 흉부 전산화 단층촬영 소견과 기관지 내시경 소견상 기관지 유래 암종이 의증되었던 환자에서 조직 검사를 통해 방선균증으로 진단된 증례를 보고하는 바이다. Endobronchial actinomycosis is a rare disease that presents with endobronchial mass, Endobronchial actinomycosis can be misdiagnosed as endobronchial malignancy such as bronchogenic carcinoma, endobronchial tuberculosis, lipoma, or unresolving pneumonia. We report here a case of endobronchial actinomycosis mimicking bronchogenic carcinoma in patient with chronic obstructive lung disease (COPD). On admission, the patient presented with hemoptysis and had history of COPD. Chest CT finding was endobronchial mass with atelectasis, and fiberoptic bronchoscopy revealed near total obstruction of the left inferior lingular bronchus (LB5) of left upper lobe with an exophytic endobronchial mass. Contrary to fist impression, bronchoscopic biopsy revealed actinomycotic infection involving the bronchus. Intravenous administration of penicillin G followed by oral amoxicillin therapy was done and the mass was markedly decreased thereafter.
박재순(Jae-soon Park),김일환(Il-Hwan Kim),탁태오(Tae-oh Tak),국민구(Min-gu Kuk),김대희(Dae-hee Kim),신승언(Seung-eon Shin),김정한(Jung-han Kim),이동섭(Dong-sub Lee),김승만(Seung-man Kim),김도식(Do-shik Kim),임경재(Kyung-jae Im) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
Motorized retractors enhance the safety of passengers by removing the slack of webbing and by holding upright driving position. Reliability of a driving mechanism that includes one-way clutch between the driving motor and webbing is directly linked to the safety of passenger. In this research, conditions for locking one-way clutch and also conditions for sustaining locking are theoretically investigated. the operation of a motorized retractor under realistic conditions is simulated in order to validate the proposed retractor design.