In this work, anorthite have a chemical formula (CaO.Al2O3.2SiO2) was prepared from local kaolin and calcium oxide (CaO) extracted from CaCO3. In the first stage, two different methods were followed. The second method shows ...

We have used the pseudo-potential and plan wave method (PP-PW) based on density functional theory (DFT) to examine the physical and mechanical properties of dental ceramics systems based on the crystals Li2Si2O5, Ca5(PO4)3F ...

"Solar distillation is an interesting solution for the supply of drinking water in arid and / or isolated areas. However, the production of conventional solar stills remains insufficient. Therefore, and in order to improve ...

The majority of materials mechanical properties are due to the crystalline defects interactions, in particular the interaction between dislocations and interfaces. The interaction energy between a dislocation and an ...

In this work, a numerical study of convective heat transfer in confined fluid and porous media was considered. The fluid flow is governed by the Navier–Stokes equations in the fluid region whereas the Darcy–Brinkman–Forchheimer ...

The goal of this thesis is to realize zinc oxide (ZnO) varistors doped with cobalt (Co) from nanosized powders, in order to explore the relationship between the reduction in particle size and the varistor effect. To do ...

The present work consists in the elaboration and characterization of the undoped and cadmium-doped ZnO with different concentrations of cadmium (Cd) (1, 2, 5 and 10% in weight) thin films in order to improve the structural ...

This work concerns a rigorous treatment by the Feynman path integral of a set containing four spherically symmetric quantum systems studied in the past by means of other ineffective methods. In the framework of nonrelativistic ...

The aim of this work is to prepared porcelain with high mechanical and dielectric properties by using economical native raw materials without providing ideal high-cost conditions. The basic porcelain composition was selected ...

This Ph. D. thesis work reports the results of the study of the laminar forced convective heat transfer flow in two different geometries: A geometry made with two coaxial discs and a micro-channels heat sink. This study ...