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이정우,전기찬,유동진 대한금속재료학회(대한금속학회) 1990 대한금속·재료학회지 Vol.28 No.7
Localized neck in a sheet is assumed to occur by localized shear deformation on the plane where pure shear condition is attained. The three dimensional stress state of the incipient shear plane is determined from the stress transformation. The stress transformation gives the geometry of the slip plane and therefore approximates the shape of the localized neck.
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Congenital Double-Orifice Mitral Valve with Mitral Valve Prolapse and Severe Mitral Regurgitation
이정우,송종민,박종필,강덕현,송재관 한국심초음파학회 2008 Journal of Cardiovascular Imaging (J Cardiovasc Im Vol.16 No.3
A 27 year-old female presented with dyspnea on exertion, and was diagnosed using transthoracic and transesophageal echocardiography as congenital double-orifice mitral valve and mitral valve prolapse resulting in severe mitral regurgitation. This finding was confirmed by open heart surgery, and her mitral valve was successfully repaired with lateral commissural repair and ring annuloplasty using da Vinci system. We report this case with review of literature. A 27 year-old female presented with dyspnea on exertion, and was diagnosed using transthoracic and transesophageal echocardiography as congenital double-orifice mitral valve and mitral valve prolapse resulting in severe mitral regurgitation. This finding was confirmed by open heart surgery, and her mitral valve was successfully repaired with lateral commissural repair and ring annuloplasty using da Vinci system. We report this case with review of literature.
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