Conférences, Colloques, Séminaires, Symposiums: Recent submissions
Now showing items 2140 of 783

Path Integral Solution of a Singular Oscillator Potential
(Université des Frères Mentouri Constantine, 20161215)By path integral formulation and delta functional technics we calculated the propagator of singular oscillator. We have foundthe discrete spectrum and the corresponding wave functions 
The numerical study of the origin of the ultra high energy cosmic rays with CRPropa
(Université des Frères Mentouri Constantine, 20161215)The origin of ultrahighenergy cosmic rays is one of the most enigmatic questions in modern physics. The study of a such highenergy particles is a new and active research area where scientists wish to find the stillunknown ... 
On YangMills Matrix Models: Emergent Geometry
(Université des Frères Mentouri Constantine, 20161215)One of the most fundamental questions we can ask about a given gauge theory is its phase diagram. We present Monte Carlo simulations, for a simple three matrix model that exhibits an exotic phase transition. we focus on ... 
Inflationary models and applications
(Université des Frères Mentouri Constantine, 20161215)Study the cosmic microwave background: polarization and anisotropy.The inflationary model has been proposed to address the shortcomings of the standard model of cosmology. This cosmological model offers both a solution ... 
Updating the Algerian Solar Potential: Context, Issues and Provided Solutions
(Université des Frères Mentouri Constantine, 20161215)The sharp increase experienced by oil prices in the 70s pushed man for the first time to be interested in alternative sources of energy. In Algeria, even if opinions differ when it comes to agree on a specific date, all ... 
Thermodynamic assessment of the Co–Mg system supported by abinitio calculations
(Université des Frères Mentouri Constantine, 20161215)The objective of this work is the thermodynamic modeling of the CoMg binary system using two methods: The CALPHAD method (Calculation of Phase diagrams) and the abinitio calculations. CALPHAD is a very important method ... 
Theoretical investigation of structural, electronic and thermodynamic properties of CrO2compound
(Université des Frères Mentouri Constantine, 20161215)The structural, electronic and thermodynamic properties of CrO2 compound have been performed by firstprinciples density functional calculations using the full linearized augmented plane wave (FP LAPW) method as implemented ... 
Theoretical investigation of Structural, electronic, magnetic, thermodynamic and elastic properties of Heusler alloys Mn2Al Z (Z= Cr,V)
(Université des Frères Mentouri Constantine, 20161215)In the recent years, the Heusler alloys are attracted the attention of many researchers because these materials are used in the spintronics applications. However we have investigated the structural, electronic, magnetic, ... 
The influence of measurement temperature on electrical parameters of CZTS thin film based heterojunction in the dark
(Université des Frères Mentouri Constantine, 20161215)The objective of this work is to study the influence of measurement temperature on the electrical parameters of CZTS/ZnS heterojunctionin in the dark. The device were fabricated using pneumatic spray pyrolysis technique, ... 
The hydrodynamic stability of laminar boundary layer flow along a horizontal plate with suction
(Université des Frères Mentouri Constantine, 20161215)Hydrodynamic stability and transition problems of two dimensional laminar external flow over a flat plate with wall suction are studied numerically using thetemporal linear stability theory. The flow is assumed similar ... 
The exploitation of a local raw material dolomite to prepare magnesium phosphate cements
(Université des Frères Mentouri Constantine, 20161215)Starting from a local raw material dolomite, phosphomagnesium cement which quickly hardened at room temperature was usefully prepared. Under controlled conditions dolomite was partially calcined, to obtain a mixture of ... 
The effect of ZnO additions on the porcelain mechanical properties
(Université des Frères Mentouri Constantine, 20161215)Le but de ce travail est de fabriquer une porcelaine jouissant de propriétés mécaniques remarquables, à partir de matières premières locales. Afin d'améliorer les propriétés mécaniques des échantillons 3 ,5 en poids d‘oxydes ... 
Texture growth of AlN films deposited on Si(100) and (111) by DC reactive magnetron sputtering (dcMS) and by high power impulse magnetron sputtering (HiPIMS)
(Université des Frères Mentouri Constantine, 20161215)We have studied the texture evolution of Aluminum nitride (AlN) thin. AlN thin films were deposited on Si (100) substrate by dc magnetron sputtering (dcMS) and High Power Impulse Magnetron Sputtering (HiPIMS) technics.We ... 
Synthesis, spectroscopic characterization, and Xray crystal structure of a novel 3D barium strontium oxalate
(Université des Frères Mentouri Constantine, 20161215)Oxalatebased compounds have attracted much attention in many areas. Due to their low thermal stability they can be used as precursors of nanocrystalline oxides, e.g., pure BaTiO3 can be produced from the decomposition of ... 
Synthesis and characterization of TiO2 nanoparticles by ball milling process: the influence of process time on the structural, optical, and morphological propreties
(Université des Frères Mentouri Constantine, 20161215)Synthesis of nanomaterials by a simple, low cost and in high yield has been a great challenge since the very early development of nanoscience, TiO2 nanoparticles is one of the most used metal oxides in the global nanotechnology ... 
Synthesis and characterization of Agdoped ZnO thin films
(Université des Frères Mentouri Constantine, 20161215)Zinc oxide (ZnO) is an important material with a wide bandgap of 3.4 eV and a relatively large exciton binding energy of 60 meV. It is also characterized by having excellent chemical stability, nontoxicity, and good ... 
Synthèse et caractérisation descouches minces d’oxyde de nickel (NiO)par voie électrochimique
(Université des Frères Mentouri Constantine, 20161215)Dans ce travail, descouches minces d‘oxyde de Nickel (NiO)ont étépréparéespar électrodéposition en courant continu et en courant pulsé surdes plaquessemitransparentes d‘oxyde d‘étain dopé par le fluor(FTO) à partir d‘une ... 
Studying the nature of some graphite materials using Raman spectroscopy
(Université des Frères Mentouri Constantine, 20161215)This work is a review of the application of Raman spectroscopy to identify the nature of some carbon materials such as: commercial graphite with various compositions. The RAMAN spectra show four bands D, G, D‘ and 2D bands. ... 
Study the Boron Spectrums Induced by Laser Sublimation
(Université des Frères Mentouri Constantine, 20161215)This paper is based on the study of the emitted radiation by using LIBS technique (Laser Induced Breakdown Spectroscopy). It is an advanced technique allows analyzing solid, liquid and gaseous materials and it leads to ... 
Study on the solid state reaction between Co/Ni bilayer film and silicon substrate
(Université des Frères Mentouri Constantine, 20161215)Billayers of pure Cobalt and nickel films were evaporated alternatively on (100) monocristalline silicone substrate. After annealing, in a vacuum furnace from 300 to 800°C during 20 min, the growth sequence of the phase‘s ...