Sixty six strains are isolated starting from 18 samples from cow's raw milk in six breeding stations at Constantine. Their identification enabled us to obtain the following species: Sc. thermophilus, Ln. lactis, Ln. ...

The Mafragh river basin is located in the extreme North-East of Algeria, one of the most watered regions of Algeria. Faced with climate changes and growing competition between users, the challenge of mobilization, management ...

Nanotubes are of great interest due to their high surface-to-volume ratios and size-dependent properties. Titanium dioxide nanotube array is a well-known nanostructured semiconductor oxide with improved functional ...

The mechanical properties of materials are determined by the interactions between defects found in the crystal. In a bicrystal of bimaterials, the result forces exercising on the matrix dislocation near and parallel to an ...

This thesis presents the results of the theoretical study of a system that produce chaos. The system is modeled by a coupled transformation (denoted T) in two dimensions based on a sine function. In this study, we analyze ...