• Title/Summary/Keyword: 공성

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Management of Tracheostomal Stenosis : Modified Fish-Mouth Technique (변형된 Fish-Mouth Technique을 이용한 새로운 기관공성형술식)

  • Baek, Seung-Jae;Lim, Jae-Yol;Hong, Hyun-Jun;Choi, Hong-Shik
    • Korean Journal of Head & Neck Oncology
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    • v.26 no.1
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    • pp.27-29
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    • 2010

  • Tracheostomal stenosis after total laryngectomy is brothersome problem to surgeon and patient. To prevent tracheostomal stenosis, tension around the tracheostoma must be released. Advancement flap, V-Y inset and Z-plasty were suggested as solution to tracheostomal stenosis. But such methods need elevation of superior flap and it is very difficult when the patients received radiotherapy and has high change of developing pharyngocutaneous fistula. We suggested new stomaplasty technique which named "Modified Fish-Mouth Technique" that does not need to elevate superior skin flap.

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The Evaluation of the Laser Machinability for Mechanical Materials using Taguchi Experimental Method Design (다구찌 실험 계획법을 이용한 기계재료의 레이저가공성 평가)

  • Kim, Sang-Kyu;Yoon, Yeo-Myung;Jung, Yoon-Gyo
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.11 no.2
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    • pp.73-78
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    • 2012

  • Recently, the laser processing method has used as micro-machining technologies in industries of aerospace, electronics and automotive. The laser processing newly focused could be alternative to existing machining method. However, there are few practical results of research about the proper setting of the laser machining conditions and the laser machining characteristics for mechanical materials. The purposes of this study was to choose optimum machining conditions and to estimate the laser machining characteristics using taguchi experimental method for various mechanical materials that is S45C, Stainless steel, Aluminum, Copper, Titanium and Tungsten carbide. From obtained results, it was confirmed that optimum machining conditions could be found and laser machinability depends on thermal conductivity and hardness of workpiece.

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A Study on the Hierarchy in Interior Space by Raumplan - Focused on the Relation Between Privacy & Publicity - (라움플란에서 나타난 실내공간의 위계에 관한 연구 - 사성과 공성의 관계형성 방식을 중심으로 -)

  • Seo, Dong-Hyun;Lee, Hyun-Hee
    • Proceedings of the Korean Institute of Interior Design Conference
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    • 2004.11a
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    • pp.108-111
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    • 2004

  • This spatial inclusion in actual housings are realized in the division of cellular space, formation of room through frontality, transition of room through material surface, and the dual-systemizing of circulation into function and formality. This simultaneously establishes the self-sufficiency of individual spaces and the interrelations between volumes, and leads to Raumplan, which is a form of architecture that gradually includes space within space. Though its dichotomous consideration of space. It economizes their use, which answers to the actual request of architecture in the modern era.

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