The propagation of gravity waves in an emerged three-layer porous medium is considered in this paper. Based on the assumption that the flow can be described by Darcy’s Law, an asymptotic theory is developed for small-amplitude long waves. This leads to a weakly nonlinear Boussinesqtype diffusion equation for the wave height, with coefficients dependent on the conductivities and depths of each l...

Internal solitary waves commonly observed in the coastal ocean are oftenmodeled by a nonlinear evolution equation of the Korteweg–de Vries type. Because these waves often propagate for long distances over several inertial periods, the effect of Earth’s background rotation is potentially significant. The relevant extension of the Kortweg–de Vries is then the Ostrovsky equation, which for interna...

the problem of propagation of plane wave including body and surface waves propagating in a transversely isotropic half-space with a depth-wise axis of material symmetry is investigated in details. using the advantage of representation of displacement fields in terms of two complete scalar potential functions, the coupled equations of motion are uncoupled and reduced to two independent equations...

A model of a particle in finite space is developed and the properties that may possess under this are studied. The possibility particles attract each other due to their own wave nature discussed. assumption spatially confined oscillations (SCO) medium used. relation between SCO refractive index idealized universe derived. Due plane constituents SCOs, presence field with nonzero gradient causes ...

BACKGROUND The problems of patients with erectile dysfunction have been recognized, leading to the emergence of sildenafil, which has led to successful treatment in many cases. The purpose of this study is to examine the effect of sildenafil on the pulse wave velocity of patients with erectile dysfunction. METHODS Fifteen patients with erectile dysfunction were enrolled for this study. The br...