Fronts Near Orography in a One-Layer Model

The numerical treatment of wet/dry fronts in shallow flows: application to one-layer and two-layer systems

Abstract--This paper deals with the numerical difficulties related to the appearance of the socalled wet /dry fronts tha t may occur during the simulation of free-surface waves in shallow fluids and internal waves in stratified fluids composed by two shallow layers of immiscible liquids. In the one-layer case, the fluid is supposed to be governed by the shallow water equations. In the case of t...

Dual fronts in a phase field model

We study a dual front behavior observed in a reaction–diffusion system arising initially in the context of phase field models. A precursor front propagates into a stable phase, generating a metastable “intermediate phase”. This intermediate phase then decays via an oscillating front, producing a periodic structure which later coarsens. Unlike previously studied models in which dual fronts appea...

Kpp Fronts in a One-dimensional Random Drift

We establish the variational principle of Kolmogorov-PetrovskyPiskunov (KPP) front speeds in a one dimensional random drift which is a mean zero stationary ergodic process with mixing property and local Lipschitz continuity. To prove the variational principle, we use the path integral representation of solutions, hitting time and large deviation estimates of the associated stochastic flows. The...

Bladder cancer: one enemy, many fronts.

Radiographic and Macroscopic Findings after One Layer Vs Two layer Laparoscopic Gastrojejunostomy in Dogs.

Objectives-  To evaluate radiographic changes and macroscopic findings in handsewn laparoscopic gastrojejunostomy in dogs. Study Design-Elective experimental study Animals-Eighteen mix-breed healthy male and female dogs. Methods-Animals were divided in two equal groups randomly. Two layers handsewn laparoscopic side to side gastrojejunostomy was performed in the control group and one laye...