The boundary element method (BEM) with Lagrangian formulation is a conceptually simple and efficient for the simulation of nonlinear wave shoaling, or without impermeable coastal structures, up to breaking. However, in post-breaking flows, domain no longer simply connected, BEM not generation new free surface. Volumes fluid (VOF) methods are made track fluid-free surfaces after breaking, but th...

We review recent studies on fomite transmission of COVID-19, caused by the novel coronavirus. In particular, we focus survival time coronavirus solid and porous surfaces. Since aqueous phase a respiratory droplet serves as medium for virus survival, evaporation surface plays crucial role in determining time. While bulk takes few seconds to evaporate, previous titer measurements revealed that ca...

The authors have studied the distribution of anionic and cationic sites on both luminal and abluminal endothelial aspects of iridial vessels in Macaca mulatta and Macaca fascicularis. With the animals in general anesthesia, anionic ferritin (AF) and cationic ferritin (CF) were either injected intravenam or perfused at known intraocular pressure (15-20 mmHg) through the anterior chamber. AF intr...

Abstract: Penetrative convection due to purely internal heating in a horizontal ferrofluid-saturated porous layer is examined by performing linear stability analysis. Four different types of heat supply functions are considered. The Darcy model is used to incorporate the effect of the porous medium. Numerical solutions are obtained by using the Chebyshev pseudospectral method, and the results a...

Specific receptors on the surface of mammalian cells actively internalize cell-impermeable ligands by receptor-mediated endocytosis. To mimic these internalizing receptors, my laboratory is studying artificial cell surface receptors that comprise N-alkyl derivatives of 3beta-cholesterylamine linked to motifs that bind cell-impermeable ligands. When added to living mammalian cells, these synthet...

Vertical contrasts in permeability, particularly where permeable surface materials overlie impermeable materials that prohibit the downward infiltration of groundwater, concentrate the groundwater and become an important focus of landslides that are triggered by intense rainfall. Just such a hydrogeological structure is present within the pyroclastics in Nishigo Village in Fukushima Prefecture,...