The author proposes in this work, the numerical study of the natural convection phenomenon, in a closed and open greenhouse, also a numerical study of the phenomenon of mixed convection, in an open double-chapel greenhouse, ...

The subject studied in the presented thesis is the effect of incorporating different concentrations of multiwall carbon nanotubes into iron-copper — Fe–Cu with a ratio of 4:1; MWCNTs of 0.5, 1.0 and 2.0 vol.%—nanocomposites—made ...

In recent years, hybrid organic-inorganic perovskites have emerged as a new class of semiconductors with very interesting optoelectronic properties for photovoltaic devices. This thesis focuses on the deposition of CH3NH3PbI3 ...

Intermittent energy sources are sources of renewable energy production corresponding to natural flows, which are not permanently available and whose availability varies greatly without the possibility of control; like solar ...

The aim of this work is the synthesis and characterization of ZnO, MgO, Mg: ZnO and Er: MgO for the photocatalytic activity under UV irradiation. The films were synthesized using the sol-gel method and were deposited via ...

Going beyond the Standard Model (BSM) becomes mandatory to explain many outstanding unsolved problems. Among of many theories beyond the Standard Model, we are interested in the extension of the SM SU(3)C SU(2)L U(1)Y gauge ...

In the following undertaking, we have dealt with both the annealing temperature effects and the addition of Sn and Al doping on the structural, morphological, optical, and photocatalytic proprieties of TiO2 thin films ...

No resource can be considered more strategic and vital than water. Given the growing demand for water, the variability of precipitation is a very sensitive question. Drought can occur in all climatic regimes. The consequences ...

Nanomaterials present new physical properties which open up promising prospects in terms of application, whether in the field of magnetism, mechanics, catalysis or optics. This aroused our interest with, however, a certain ...

The objective of the work undertaken within the framework of this thesis is the study of the thermodynamic and structural characteristics of a class of nanocomposites. The characteristics of luminescent materials based on ...