The denaturation of the DNA is analyzed using an analytic model. The DNA molecules are described in the Primitive Model of Polyelectrolytes (PMP), where the polyelectrolyte molecules are cylinders with charged sites. We show that the DNA stabilization arises as the result of the competition...

A melting transition for a system of hard spheres interacting by a repulsive Yukawa potential of a DLVO form is studied. To find the location of the phase boundary, we propose a simple theory to calculate the free energies for the coexisting liquid and solid. The free energy for the liquid phase...

Seismic signal processing is an important task in geophysics sounding and represents a permanent challenge in petroleum exploration. Although seismograms could in principle give us a picture of a geological structure, they are very contaminated by spurious signals (having the ground roll as the...