The propagation of a Bleustein-Gulyaev(B-G) type wave in a structure consisting of multiple layers and a half-space of porous piezoelectric materials is theoret
The aim of this study is to investigate the change of mechanical properties of human dentin due to aging and spatial variation. Sections of coronal dentin are m
For the instability problem of density stratified shear flows in sea straits with variable cross sections, a new semielliptical instability region is found.Furt