The present report describes a male newborn with a pulsatile structure beneath the sternum. Echocardiography showed common atrium, a single ventricle, mitral atresia, double outlet right ventricle, subpulmonary stenosis, small pulmonary artery branches, and a thin walled ventricular diverticulum suggestive of Cantrell's syndrome. The diverticulum was resected to prevent life threatening events ...

Thin-walled parts are commonly used in the aerospace sector. However, there serious machining challenges, such as deflection, deformation and vibration. The final thin-walled component will deteriorate dimensional accuracy surface quality. This is due to vibration that occurs during flexible milling of structures since workpiece rigidity lower than cutting forces cutter. gradual reduction thin-...

The dynamic instability of single-walled carbon nanotubes (SWCNT), double-walled carbon nanotubes (DWCNT) and triple-walled carbon nanotubes (TWCNT) embedded in an elastic medium under combined static and periodic axial loads are investigated using Floquet–Lyapunov theory. An elastic multiple-beam model is utilized where the nested slender nanotubes are coupled with each other through the van d...