Now showing items 537-556 of 784

    • Para-quantum strings and Space-Time Non-Commutativity 

      SERIDI, M.A; BELALOUI, N (Université des Frères Mentouri Constantine, 2013-12-16)
      We investigate the light cone parabosonic open and closed string theories in a noncommutative space-time for the coordinates and the momentum.This provides distinct trilinear relations between mass-center variables and ...
    • PARAMETRIC STUDY OF COATING BY COOLING CRYSTALLIZATION 

      MAMERI, Fatima; KOUTCHOUKALI, Ouahiba; ULRICH, Joachim (Université des Frères Mentouri Constantine, 2016-10-31)
      The purpose of this work, the parametric study of the operating conditions that can affect the new technology of coating of ibuprofen naked tablets manufactured by compression by surose solution using cooling crystallization. ...
    • PATH INTEGRAL FOR THE GENERALIZED JAYNES-CUMMINGS MODEL WITH A PSEUDO HERMITIAN HAMILTONIAN AND NONLINEAR KERR CAVITY 

      AOUACHRIA, M (Université des Frères Mentouri Constantine, 2013-12-16)
      We use the coherent state path integral and an angular model for the spin to solve the generalized Jaynes-Cummings model with a pseudo-hermitian Hamiltonian and a nonlinear Kerr cavity. The propagators are given explicitly ...
    • Path Integral Solution of a Singular Oscillator Potential 

      Bekhouche, S; Bentag, B (Université des Frères Mentouri Constantine, 2016-12-15)
      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
    • Path Integral Solution of a Singular Oscillator Potential 

      Bekhouche, S; Bentag, B (Université des Frères Mentouri Constantine, 2016-12-15)
      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
    • Performance of maximum power point tracking MPPT controller in photovoltaic system 

      Meflah, Aissa; Rahmoun, Khadidja (Université des Frères Mentouri Constantine, 2013-02-17)
      Modeling and simulation of a photovoltaic system for improving and optimizing the performance of its control, by the method of continued maximum power point tracking (MPPT) is presented in this work. For this characterization ...
    • PERSPECTIVE DE CONCEPTION D’UN IMMUNOCAPTEUR A BASE DE NANOPARTICULES D’OR 

      CHABANE SARI, S.M; ZERGOU, S (Université des Frères Mentouri Constantine, 2013-12-16)
      La synthèse de nanoparticules par réduction chimique est la technique la plus utilisée pour former des solutions colloïdales de nanoparticules métalliques. De plus, parmi toutes les techniques de synthèse, elle offre le ...
    • PHASE SWITCHING PHENOMENON AND MAGNETOELECTRIC EFFECT IN POLYVINYLIDENE FLUORIDE ? PHASE THIN FILMS: EXPERIMENTS AND MODELING 

      BELOUADAH, RABAH; GUYOMAR, DANEIL; GUIFFARD, BENOIT (Université des Frères Mentouri Constantine, 2013-12-16)
      The magnetoelectric ME materials has dielectric polarization induced by the magnetic field or induced magnetization under an electric field. A strong ME effect requires the simultaneous presence of magnetic moments and ...
    • PHASE TRANSFORMATION IN PORCELAIN FIRED AND PORCELAIN RAW ALGERIAN MATERIALS 

      KITOUNI, S; HARABI, A (Université des Frères Mentouri Constantine, 2013-12-16)
      This work presents an investigation that was undertaken for four formulations of porcelain. Compositions prepared by mixing materials such as kaolin, quartz, potash feldspar and talc, were investigated. Results are ...
    • PHÉNOMÈNE DE RECRISTALLISATION DANS L’ALLIAGE AU4G 

      GUESSOUM, M; RAHO, A; YOUSFI, H (Université des Frères Mentouri Constantine, 2013-12-16)
      Le présent travail, à caractère expérimental, porte sur l’étude de phénomènes de recristallisation dans l’alliage AU4G. L’étude expérimentale est consacrée à l’observation des grains, joints de grains ainsi que les gros ...
    • PHOSPHORUS DEACTIVATION PROCESS IN SILICON SUBMITTED TO HYDROGEN PLASMA 

      BELFENNACHE, D; MADI, D; BRIHI, N (Université des Frères Mentouri Constantine, 2016-10-31)
      C-V measurement is an efficient method to determine the active doping concentration in silicon. In this study, we use it in the aim to understand the process which govern the phosphorus deactivation by hydrogen. To do ...
    • PHOTOVOLTAIC ARRAY MODELING AND MPPT USING ARTIFICIAL NEURAL NETWORK 

      Hadjab, M; Djellid, A; Bennacer, H (Université des Frères Mentouri Constantine, 2013-02-17)
      The good operation of a photovoltaic system depends on weather conditions such as illumination and temperature, because for example in a mobile station powered by a photovoltaic source, power supplied by the photovoltaic ...
    • PHYSICAL CONCEPT APPLIED TO SPACE OBSERVATION BY LANDASAT 7 TM 

      TOUMIAT, C; BOUAFIA, M (Université des Frères Mentouri Constantine, 2013-12-16)
      Physical concept has been applied to space observation by using images and data of LANDASAT 7 in order to to extract quantitative information about the studied areas facilitate . the final product should respect a norm ...
    • PHYSICAL MODELING OF HIGHLY DENSE PERIODIC ARRAY OF CARBON NANOTUBES 

      Dridi, C; Zaabat, M; Boudine, A (Université des Frères Mentouri Constantine, 2013-02-17)
      In 1991, Iijima discovered, carbon nanotubes (CNTs) that have since been an intensive research [1]. Given their exceptional intrinsic properties, they become very interesting in many fields of science and technology. ...
    • PHYSICOCHEMICAL AND MORPHOLOGICAL PROPERTIES OF NOVEL COPOLYMERS FOR APPLICATION IN PHOTOVOLTAIC ENERGY 

      LAMIRI, L; NESSARK, B; HABALHAMES, F; HASNIOU, L; DJAOUANE, L; LAKHDARI, D (Université des Frères Mentouri Constantine, 2016-10-31)
      We present in this work, the synthesis and characterization of a novel copolymer from bithiophene and methylfuran, the properties of the copolymer layers were studied by electrochemical method (cyclic voltammetry), UV–vis ...
    • PLASMA-CATALYTIC DESTRUCTION OF TEXTILE DYEING WASTEWATER USING TITANIUM DIOXIDE 

      GHODBANE, Houria; HAMDAOUI, Oualid (Université des Frères Mentouri Constantine, 2016-10-31)
      The aim of this work is to study the destruction of Acid Blue 25 dye (AB25), used in the textile industry, by DC glow discharge generated in argon atmosphere in the absence and presence of TiO2. The effect of operationa ...
    • Polyimide surface treatment by plasma deposition of organosilcon nano-thin layers 

      Nouicer, I; Sahli, S; Ziari, Z; Bellel, A. (Université des Frères Mentouri Constantine, 2013-02-17)
      Plasma enhanced chemical vapor deposition (PECVD) technique has been used to deposit organosilicon nano-thin layers on polyimide (PI) films substrates from hexamethyldisiloxane (HMDSO) precursor. The nano-thin layers ...
    • Porous Surface Processes of Cu/SnO2 films in the detection of CH3OH-liquid, Prepared by Dip-Coating Method 

      Benzitouni, S; Zaabat, M; Ebothe, J; Khial, A; Rechem, D; Cheriet, H; Bouras, D (Université des Frères Mentouri Constantine, 2016-12-15)
      In recent years, the detection methods of toxic chemical species and measurement of their concentration increased significantly. In the field of detection of chemical species, we must distinguish chemical sensors that play ...
    • Precipitation and dissolution kinetics of the δ phase in Cu-15wt%.In and Cu-9wt%.Sb alloys 

      Hachouf, M; Hamana, D; Benaskeur, N; Selmi, N (Université des Frères Mentouri Constantine, 2016-12-15)
      Theprecipitation and dissolution of the δ phase in the supersaturated solid solutions of both Cu-15wt%. In and Cu-9wt%.Sballoys has been studied during isothermal and anisothermal analysis using several experimental ...
    • PREDICTION NUMERIQUE DU COEFFICIENT DE POUSSEE POUR UNE TUYERE SURDETENDUE 

      NEDJARI, M; MAHFOUDI, E; BENAROUS, A (Université des Frères Mentouri Constantine, 2016-10-31)
      Le présent travail est une tentative numérique vers l’analyse de l’écoulement compressible turbulent en régime de surdétente. L’analyse porte sur la localisation du disque de Mach, la prédiction de la position du point ...