Browsing Actes by Title

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  • Guechi, A; Chegaar, M (Université Frères Mentouri - Constantine 1, 2013-02-17)
    The electrical current generated by the solar cells is very sensitive to the incident spectral distribution and intensity. This distribution varies greatly during the day due to changes in the sun’s position or weather ...
  • Kalla, L; Boudine, A; Benhizia, K; Zaabat, M (Université Frères Mentouri - Constantine 1, 2013-02-17)
    In this work, we focus on the transport of spin-polarized currents in semiconductor materials and the quantum modeling of this transport taking into account different mechanisms acting on the spin. More specifically, we ...
  • Mouchaal, Y; Toumı, A. L; Reguıg Bendoukha, A; Khelıl, A; Bernede, J.C (Université Frères Mentouri - Constantine 1, 2013-02-17)
    In this work thin films of PTB polymer : poly [(thiophene-2,5-diyl)-co-(benzylidene)], which is soluble in various organic solvents such as CH2Cl2,CHCl3 THF, acetone, and ethyl acetate were deposited onto glass substrates ...
  • Allouane, Dalila; Abdelmalek, Nadjate; Rahmane, Saad; Abdelaali, Hafid; Hadjeris, Lazhar; Mahdjoub, Abdelhakim; Bougdira, Jamal (Université Frères Mentouri - Constantine 1, 2013-02-17)
    ZnO thin films have been prepared on glass substrates at various temperatures 150, 250, 350 and 450°C, using pneumatic spray pyrolysis technique in order to investigate the structural and optical properties of the films. ...
  • Lakehal, S; Achour, S (Université Frères Mentouri - Constantine 1, 2013-02-17)
    Photoelectrochemical Cells (PECs) utilize solar energy to produce hydrogen gas, a useful combustible resource. Along with photovoltaics, PECs will contribute to the effort of meeting global energy demand. Nanorods provide ...
  • Ayad, M; Abderrazak, M; Fathi, M; Aissat, A (Université Frères Mentouri - Constantine 1, 2013-02-17)
    Luminous cascade systems is a new system applied in the design of photovoltaic module with low cost and high efficiency, They consist of a transparent plate of polymethyl methacrylate (PMMA) doped with luminescent dyes, ...
  • Neffah, Z (Université Frères Mentouri - Constantine 1, 2013-02-17)
    The energy and global warming crises have drawn renewed interests to thermally driven cooling systems from the air conditioning and process cooling fraternities. The early development of an absorption cycle dates back ...
  • Neffah, Zohra; Yousfi, Med Lamine; Merabti, Leila; Hatraf, Nessrine (Université Frères Mentouri - Constantine 1, 2013-02-17)
    In recent years, finding ways to improve absorption-system efficiency has been a great challenge for researchers. Works were mainly focused on inventing new or hybrid cycles for refrigeration systems. The aim of this paper ...
  • Lounas, A; Nait Bouda, A; Menari, H; Gabouze, N (Université Frères Mentouri - Constantine 1, 2013-02-17)
    Alkaline etching has been widely used in silicon technology and applied for different purposes such as damaged layer removal from silicon surfaces, micro-membrane and complex micro-device fabrication for micro-sensor [1] ...
  • Saim, Asmaa; Tebboune, Abdelghani; Berkok, Houria; Belbachir, A.H (Université Frères Mentouri - Constantine 1, 2013-02-17)
    In this work, we have conducted a theoretical study on the nano-scale at the base of the simulation of phase transitions and the corresponding pressures as well as the volume discounts, the rigidity and the stability of ...
  • Draidi, M; Zaabat, M; Boudine, A (Université Frères Mentouri - Constantine 1, 2013-02-17)
    The component elements of the field effect transistors can be grouped into two distinct categories. Extrinsic elements representing different access structures such as parasitic resistances Rs and Rb Among the intrinsic ...
  • Mammar, Mohamed; Hamidat, Abderrahmane (Université Frères Mentouri - Constantine 1, 2013-02-16)
    In order to investigate the steady heat transfer characteristics of a porous media solar tower receiver, this paper applies the steady heat and mass transfer models of the porous media to solar receivers, chooses the ...
  • Bouhalassa, A; Boufendi, T (Université Frères Mentouri - Constantine 1, 2013-02-17)
    This study concernsanumerical simulationofthree-dimensionalconjugateheat transferin ahorizontal pipe heatedby Joulean effectthroughits entire thickness.The mixed convection in the fluid domain is combined with heat ...
  • Ghernoug, Chahinez; Djezzar, Mahfoud; azzouz, Khadoudja; bendjaballah, Fouzia (Université Frères Mentouri - Constantine 1, 2013-02-17)
    Convective heat transfer in eccentric horizontal annuli situated between two cylinders with isothermal wall conditions are studied numerically using two-dimensional finite-difference and finite-volumes models. The annular ...
  • Ben Slimane, H; Helmaoui, A (Université Frères Mentouri - Constantine 1, 2013-02-17)
    In this work some results of theoretical analysis on the selection of optimum band gap semiconductor absorber graded band gaps for application in multijunction solar cells are presented. A detailed theoretical analysis ...
  • Tabet, Ismail; Bellel, Nedire (Université Frères Mentouri - Constantine 1, 2013-02-17)
    In this paper we made a numerical modeling of a new solar collector with cylindro-parabolic concentrator, the different between this collector with the other traditional collector , we introduce mirrors cylindro- parabolic ...
  • Zerrouk, I; Dorbani, T; Labii, T; Hamamda, S; Boubertakh, A (Université Frères Mentouri - Constantine 1, 2013-02-17)
    The samples studied are pure graphite whose preparation method includes a step of pressing. Graphite is a material with properties covering a wide range of values. These properties may differ qualitatively, and depending ...
  • benmansour, N; Agoudjil, B; Boudenne, A (Université Frères Mentouri - Constantine 1, 2013-02-17)
    This study focuses on an experimental investigation of thermophysical properties of date palm wood (Phoenix dactylifera)from Biskra oasis in Algeria. The goal is to use this natural material in the manufacture of thermal ...
  • Chekirou, Wassila; Boukheit, Nahman; Karaali, Ahcen (2013-02-17)
    A detailed thermodynamic analysis of simple and regenerative cycles of adsorption refrigeration is presented. Two functions of the incoming and outgoing energy for the regenerative cycle using two isothermal adsorbers have ...
  • Chaieb, A; Chari, A; Sahraoui, B (Université Frères Mentouri - Constantine 1, 2013-02-17)
    The content of this work deal with the preparation method, the effect of dimensional confinement and the influence of the nanoscale size on the optical properties of materials compared to those of bulk phase. CdSe nanoparticles ...

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