This work describes a thesis that is divided into two chapters. In the first chapter, a synthesis of novel benzimidazolium salts is presented as N-heterocyclic carbene precursors (NHCs), along with the synthesis of their ...
This thesis focuses on the synthesis of new porous coordination polymers based on pyromellitic acid. The crystal structures of the hybrid materials have been solved from single-crystal X-ray diffraction data and the ...
Aromatic compounds containing azo or azoxy functions are widely used in the chemical industry as color pigments, food additives, indicators, initiators of free-radical reactions and therapeutic agents. The treatment of ...
This work concerns the application of the approach of supersymmetry in quantum mechanics (SUSYQM) to solve the one-dimensional Schrödinger, Klein-Gordon and Dirac equations for a particle of position-dependent mass subject ...
In this work, two parts have been developed. The first is devoted to the synthesis, characterization and theoretical study of new meso-substituted dipyrromethanes. These compounds have been synthesized by a double ...
In this work, we have numerically analyzed the problem of heat transfer by laminar and permanent natural convection in an eccentric annular space filled with a hybrid nanofluid. The two internal and external cylindrical ...
The aim of this thesis is to present a novel mode of convergence of sequences of random variables, and to establish a better complete convergence rate's for kernel estimators of functional characteristic’s of unknown ...
The present study focused on the phytochemical investigation and the evaluation of the
antioxidant activity of two plants: Anagallis monelli ssp. linifolia (L.) (Primulaceae) and Arenaria
cerastioides (poir.) (Caryophyllaceae). ...
This thesis work focuses on the thermal performance of biosourced materials of plant origin with the aim of using them as thermal insulation in buildings. We have studied their use, particularly in subtropical climates. ...
This work is devoted to the phytochemical study of two endemic Saharan plants, Asteriscus graveolens (Forsk.) DC. and Crotalaria vialattei Batt. belonging respectively, to the Asteraceae and Fabaceae families. These two ...
This work is devoted to the study of the structural, morphological, optical and photocatalytic properties of thin layers of TiO2 un-doped and doped Lithium and Barium elaborated by the sol-gel method. The different samples ...
The pollution caused by heavy metals has been increasing in recent years, posing a threat to ecosystems and human health. This study focuses on the adsorption and cation exchange of chromium (III) and manganese (II) on ...
ZnO powders were synthesized by sol-gel route with ([Zn(OOCCH3)2.2H2O], > 99.9%) as precursor and at room temperature. The powders were annealed for 1 hour at temperatures between 500 and 900°C. The effects of aluminum ...
Three new Schiff bases derived from DHA and substituted aniline have been synthesized. Their structures were principally determined by crystallography and IR spectroscopy. The electrochemical study of these compounds was ...
This thesis examines a promising new method for the effective depollution of water contaminated by organic pollutants such as pharmaceutical products. This advanced oxidation method is based on heterogeneous photocatalysis. ...
Extended surfaces, also known as cooling fins are widely used in a variety of industrial fields for cooling down electronic and mechanical components while they are employed in the area of the thermal design for heating ...
The use of solar energy to reduce the consumption of fossil fuels in buildings is an interesting solution. This thesis is part of this context. The objective of this work is, first of all, the detailed study of the sunspot ...
The objective of this work is to study discrete dynamical systems, introducing fundamental concepts such as stability, bifurcation, and chaos. We will then apply these concepts to a
discrete-time predator-prey system with ...
This work provides insight into the application of the Galerkin method for solving
two boundary value problems. The first problem deals with bidimensional linear
Schrödinger parabolic partial differential equations, and ...
The present work is basically devoted to study the existence and uniqueness of solutions
for certain classes of nonlinear fractional differential equations with initial conditions via
the ψ−Caputo fractional derivative ...