Now showing items 482-501 of 784

    • NANOSCIENCE AND NANOTECHNOLOGY ON ENERGY SOURCES 

      CELE, NP (Université des Frères Mentouri Constantine, 2016-10-31)
      Why is nanoscience relevant in energy? Many effects important for energy happen at the nanoscale. In solar cells, for instance, photons can free electrons from a material, which can then flow as an electric current; the ...
    • Nanotachnology:structural study of a micromembrane compound by polymer and materials magnetic 

      BELKACEM, Mohamed; BENDIB, Samir (Université des Frères Mentouri Constantine, 2013-02-17)
      From day in day one can see the evolution of technology and more particularly that of Nano. In this context, the nanosciences are a study of the phenomen and the handling of the matter on the scales atomic, molecular and ...
    • Natural convection in rectangularenclosure with heating and coolingby sinusoidal temperature profiles on twover ticalsides 

      Azzouz, Khaddoudja; Djezzar, Mahfoud; Ghernoug, Chahinez (Université des Frères Mentouri Constantine, 2013-02-17)
      We propose in this work, the numerical study of the natural convection laminar and permanent, in rectangular enclosures whose vertical walls are active and horizontal one are adiabatic. The active walls are heated and ...
    • Natural convection in a cavity filled with nanofluids 

      Bouchoucha, Abd el Malik; Bessaïh, Rachid (Université des Frères Mentouri Constantine, 2015-11-26)
      The present paper deals with a numerical study of natural convection in a cavity filled with nanofluids. The highest temperature value stands for the left vertical wall, Th (heat source), the right vertical wall is kept ...
    • NEW APPROACHS TO THE GEOMETRICAL CONCEPTS OF THE GRAVITATION THEORY AND APPLICATIONS 

      BENDJOUDI, A; MEBARKI, N (Université des Frères Mentouri Constantine, 2013-12-16)
      A new approach generalizing the geometrical concepts describing gravity is proposed. As an application, It is shown that the f(R) and other modified theories of gravity are special cases
    • New calculation of L1 subshell yields fluorescence of heavy elements 

      Sahnoune, Y; Kahoul, A; Kasri, Y; Deghfel, B; Medjadi, D.E (Université des Frères Mentouri Constantine, 2016-12-15)
      The analytical methods based on X-ray fluorescence have a great importance for a number of practical applications in a variety of fields including atomic physics, X-ray fluorescence surface chemical analysis, medical ...
    • New calculation of L1 subshell yields fluorescence of heavy elements 

      Sahnoune, Y; Kahoul, A; Kasri, Y; Deghfel, B; Medjadi, D.E (Université des Frères Mentouri Constantine, 2016-12-15)
      The analytical methods based on X-ray fluorescence have a great importance for a number of practical applications in a variety of fields including atomic physics, X-ray fluorescence surface chemical analysis, medical ...
    • New electrolytes for solar battery based on imidazolium and piperidinium cations 

      Haddad, Boumediene; Villemin ,Didier; Belarbi ,El-Habib; Rahmouni, Mustapha (Université des Frères Mentouri Constantine, 2013-02-17)
      For electrochemical applications at high temperatures, a series of imidazolium and piperidinium -based cations with different anions were synthesized and studied as electrolytes for solar battery. The syntheses are based ...
    • NEW HYBRID NANOCARRIERS BASED ON CHITOSAN, CYCLODEXTRINS AND HYDROXYAPATITE FOR SUSTAINED DRUG DELIVERY OF POORLY DRUGS USED ON THE TREATMENT OF CANCERS BY PHOTODYNAMIC THERAPY (PDT). 

      BenMihoub, A; Bal, Y (Université des Frères Mentouri Constantine, 2013-02-17)
      Encapsulation of hydrophobic porphyrin derivative as photosensitizers (PS) into different forms of nanoparticles (NP) is of a concern in this study for drug delivery and targeting in cancer photodynamic therapy (PDT) ...
    • NEW INSIGHTS FROM 331 GAUGE MODEL BARYOGENESIS 

      BOUBAKIR, A; AISSAOUI, H (Université des Frères Mentouri Constantine, 2013-12-16)
      Using the economical 331 gauge model, various baryogenesis scenarios are presented. The first order phase transition is also discussed
    • NEW INSIGHTS FROM GAUGED UNPATICLES PHYSICS: DIPHOTON HIGGS DECAY 

      ALIANE, I (Université des Frères Mentouri Constantine, 2013-12-16)
      New approach for unparticles carrying standard model quantum numbers is presented. Gauged scalar and fermionic unparticles vertices are also derived. Moreover, as an example, the Higgs decay width to two photons is also ...
    • NEW MODEL FOR SPINFET TRANSISTOR 

      Boudine, A; Kalla, L; Benhizia, K; Zaabat, M; draidi, M; Zerrouk, I (Université des Frères Mentouri Constantine, 2013-02-17)
      In this work we present the study of spin polarized transport in semiconductors as new type of current transmission in semiconductor devices, we built a 2deg model for so- called SPINFET transistor. We chose the spinFET ...
    • NEW PRIMORDIAL MAGNETIC FIELD EVOLUTION AND SIGNATURES ON THE CMB SPECTRUM 

      ABDELALI, M.A; MEBARKI, N (Université des Frères Mentouri Constantine, 2013-12-16)
      A new scenario for a primordial magnetic field is proposed and its evolution is presented. Signatures on the cosmic microwave background spectrum are also discussed
    • New procedure calculation of Kβ/Kα intensity ratiosof low Z-elements 

      Daoudi, S; Kahoul, A; Kasri, Y; Sahnoune, Y (Université des Frères Mentouri Constantine, 2016-12-15)
      Over the years, a large quantity of experimental data were reported in the literature for Kβ/Kα intensity ratios. Several researchers investigated Kβ/Kαvalues by using different methods according to different experimental ...
    • NEW QUANTUM ARITHMETIC AND LOGIC GATES 

      SLIMANI, A; MEBARKI, N (Université des Frères Mentouri Constantine, 2013-12-16)
      A new quantum arithmetic and logic gate with good performance properties like the Qcost and Qdelay is developed. As an application, a new reversible comparator is constructed
    • Ni INSERTION EFFECT ON THE ELECTRONIC PROPERTIES OF ZnS: DFT STUDY 

      CHAFI, Z; MESBAHI, M (Université des Frères Mentouri Constantine, 2013-12-16)
      The present study examines the atomic insertion of Ni on ZnS bulk and focuses on the ZnS and Ni-ZnS electronic properties. For this purpose we used the Wien2k code based on the theory of density functional theory (DFT). ...
    • Nodestructive microwaves methods for detection of micro-cracks on stainless steels 

      BOUDJERDA, Mounir; AMIR, Mounir; ZERGOUG, Mourad (Université des Frères Mentouri Constantine, 2015-11-26)
      The aim of this study is the presentation of a new non-destructive testing technique on stainless steels by the near field using microwave devices. This technique will allow the detection of micro-cracks in the surface of ...
    • NON COMMUTATIVE QCD AND SOME APPLICATIONS 

      BEKLI, M.R; MEBARKI, N; CHADOU, I (Université des Frères Mentouri Constantine, 2013-12-16)
      A QCD model based on the Seiberg-Witten non commutative geometry is discussed and some applications to hadronic processes at the LHC and Tevatron are also presented. New bounds on the non commutativity parameter are found
    • NON-EXHAUST EMISSIONS OF ROAD VEHICLE: QUANTITATIVE AND MORPHOLOGICAL ANALYSIS 

      KHARDI, Salah; NUEL, Antoine (Université des Frères Mentouri Constantine, 2016-10-31)
      Pollution in large cities is a recurring problem which governments and private companies are trying to answer. Control pollution issued by vehicles is a regularly expressed element, but this concerns the case of pollutants ...
    • Nuclei structure around shell closure N = 82 

      Kaim, S (Université des Frères Mentouri Constantine, 2016-12-15)
      The nuclei with A=140 having a few holes in the N =82 shell closure offer a fertile region to investigate the shape evolution. They are spherical or only slightly deformed in the ground state and at small angular momenta, ...