PrefaceStudy of the Structural, Electronic and Optical Properties of 1T-ZrX2 Materials (X=S, Se, Te)First-Principle Study of the Thermodynamic Properties of VSb2 Compound as a Function of Pressure and TemperatureEffect of the Introduction of a Staircase Defect on the Behavior of the Induced Electronic State in a MQWs StructureFirst-Principles Study of the Optical Properties of Zinc Antimonide Using the mBJ ApproximationElectron Transport in AlGaAs Cylindrical Quantum Wire Sandwiched between Two GaAs Cylindrical Quantum Well WiresOne-Dimensional Photonic Serial Asymmetric Loops Structure Containing Three DefectsImpact of Applied Temperature and Hydrostatic Pressure on the Off-Center Donor Spectrum in Spherical Quantum DotStudy of the Electronic Defect States of One-Dimensional Comb-like Quantum Wires Structure with Resonator Defect by Using the Transfer Matrix MethodUncorrelated Excitonic Properties in Multilayered Cylindrical Quantum DotSize Effect of Hemi-Toroidal Quantum Dot on the Electronic Properties in the Presence of an Off-Center Hydrogenic Shallow Donor ImpurityElectromagnetically Induced Transparency and Fano Resonances Base on Coaxial Photonic Waveguide Made up of Asymmetric Loop and ResonatorsEnhancement Efficiency of Solar Cells Based on Quantum Dots: A Theoretical StudyPreparation and Characterization of Modified Clay - Application to the Adsorption of an Industrial DyeNumerical Simulation of Direct Tensile Test of Reinforced Concrete Using Abaqus Software