Abstract The dominant mechanism of P-wave attenuation in fluid-saturated rock is well known to be the pore-scale squirt. However, S-wave does not change average fluid pressure a pore and volume stays unchanged. As such, has distinctively different from P-wave. This paper attempts resolve mechanisms grainstones. first viscous boundary layer fracture, second acceleration plus real-number permeabi...

Using the supergravity solution of N1 D3-branes probing AN2−1 singularities we study the pp-wave limit of AdS5×S/ZN2 . We show that there are two different pp-wave limits. One is the orbifold of the pp-wave limit of AdS5×S. In this case there is no symmetry enhancement. The other case is the same as the pp-wave limit of AdS5 × S and therefore we again see the maximal supersymmetry. We will also...