%0 Journal Article %T Study of the mathematical model for absorption and diffusion in ultra-napkins %A Paola Mannucci %J Le Matematiche %D 1995 %I University of Catania %X We anlyse a mathematical model for absorption and diffusion of a fluid in ultra-napkins. We consider a diffusion equation coupled with an ordinary differential equation, subjected to a discontinuous Neumann boundary condition. We prove the existence and the uniqueness of a regular solution which is continuous up to the boundary. %U http://www.dmi.unict.it/ojs/index.php/lematematiche/article/view/493