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Abstract Background A unicuspid aortic valve is a rare congenital cardiac abnormality.Despite its uncommon finding on an initial presentation, aortic insufficiency is accompanied with unicuspid aortic majicontrast red valve and this might reflect the natural history of progression in the morphology of unicuspid aortic valve.Case presentation We des
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Hydraulic servo actuator is used as the core actuator in tensile compression fatigue life test equipment as it operates the micro displacement very precisely at a high frequency and can be used continuously for a long period of time.Recently, the life expectancy of automobiles has been extended, the load conditions of accelerated life testing on au