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Journal Cover International Journal of Physical Sciences
   Follow    
  This is an Open Access Journal Open Access journal
     ISSN (Print) 1992-1950
     Published by Academic Journals Homepage  [73 journals]
  • Analytical investigation of convective heat transfer of a longitudinal fin
           with temperature-dependent thermal conductivity, heat transfer coefficient
           and heat generation

    • Abstract: In this article, the heat transfer through a longitudinal fin is studied. The heat transfer coefficient, thermal conductivity and heat generation are variables and supposed to be temperature-dependent. The temperature distribution in fin with longitudinal rectangular profile was carried out by using the differential transformation method (DTM) which is an analytical solution technique. For v...
      PubDate: Sun, 16 Nov 2014 00:00:00 +010
       
  • Estimation of heavy metals contamination and silicate mineral
           distributions in suspended sediments of Subansiri River

    • Abstract: Suspended sediments samples were collected from ten different locations through the Subansiri River to assess heavy metals contamination such as Fe, Al, Ti, Pb, Zn, Cu, Ni, Co, Mn and Cr. The enrichment factor (EF), contamination factor (CF), geo-accumulation index (Igeo) and pollution load index (PLI) were investigated for evaluate metal contamination in the sediments. The relative distribu...
      PubDate: Sun, 16 Nov 2014 00:00:00 +010
       
  • Modifying the chaotic behavior in the quadrupole wiggler free-electron
           laser using ion-channel guiding

    • Abstract: The principles of free-electron laser (FEL) are explained. The motion of an individual electron in a FEL in a field configuration consisting of a quadrupole wiggler magnetic field is investigated. The general formulation of the dynamical problem is given. The Hamiltonian and Hamiltons equations of motion are derived. The problem of integrability and the Hamiltonian chaos is discussed. Upon p...
      PubDate: Sun, 16 Nov 2014 00:00:00 +010
       
  • Guiding of light with pinholes

    • Abstract: A new type of light waveguide using linearly aligned pinholes is presented. Results of basic experiments are compared with theoretical estimates calculated using continuous model. This model predicts that the loss per unit length of the light inside this waveguide is proportional to the square root of the spacing between the pinholes. Since this waveguide utilizes no transparent material, it...
      PubDate: Thu, 30 Oct 2014 00:00:00 +010
       
  • Chemical composition and antioxidant capacity of the leaf extract of
           Justicia insularis

    • Abstract: The leaves of Justicia insularis have been generating a lot of interest among the Yoruba people in the Southern Nigeria. They provide useful source of human nutrition and medicinal value. In this study, J. insularis leaves were harvested, processed and analysed to determine their chemical compositions and also to investigate their antioxidant properties. The proximate analysis showed that th...
      PubDate: Thu, 30 Oct 2014 00:00:00 +010
       
  • Detection of energetic particles from plasma focus using Faraday cup and
           SSNTD (LR-115A)

    • Abstract: A Mather-type plasma focus device is used in this work which is prefilled with helium at 0.8 Torr. The total ion current density of the plasma stream is measured to be 750 mA/cm2. From time-resolved measurements (Faraday cup), the ion beam energy was distributed with energy ranging from 0.3 to 540 keV. The ion flux density of ion beam is estimated to be 4.47 × 1011 ion/steradian using track ...
      PubDate: Thu, 30 Oct 2014 00:00:00 +010
       
  • On solving the nonlinear Schrödinger-Boussinesq equation and the
           hyperbolic Schrödinger equation by using the
           (G'⁄G,1⁄G)
           -expansion method

    • Abstract: The propagation of the optical solitons is usually governed by the nonlinear Schrödinger equations. In this article, the two variable(G'⁄G,1⁄G) -expansion method is employed to construct the exact traveling wave solutions with parameters of two nonlinear partial differential equations (PDEs) namely, the (1+1)-dimensional nonlinear Schrödinger-Boussinesq system and the (2+1)-dimensional hyper...
      PubDate: Thu, 16 Oct 2014 00:00:00 +010
       
  • A novel method to develop an automobile assembly line system

    • Abstract: The assembly line is an important component of the automobile production process. The function of the assembly line is to produce different models of vehicles with minimum work in the process. For better performance, activities on the assembly line should be performed to minimise the process steps and achieve other objectives. This study develops a new dynamic sequencing method to improve ac...
      PubDate: Thu, 16 Oct 2014 00:00:00 +010
       
  • Effects of land use on river water quality of Awat-Awat Lawas Mangrove
           Forest Limbang Sarawak Malaysia

    • Abstract: Water quality and trace elements of river water of Awat-Awat, Sundar and Trusan river from Awat-Awat Lawas Mangrove Forest Limbang (AALMFL) Sarawak, Malaysia were investigated in the current research. This study used the application of Water Quality Index (WQI) and National Water Quality Standards (NWQS) provided by Department of Environment (DOE) Malaysia in evaluating the quality of the ri...
      PubDate: Fri, 26 Sep 2014 00:00:00 +010
       
  • Wet chemical synthesis of Tin Sulfide nanoparticles and its
           characterization

    • Abstract: Nanostructured materials have attracted much attention in various fields of science and technology.  Tin sulfide (SnS) nanoparticles were successfully synthesized by wet chemical method. The as-prepared tin sulfide nanoparticles were characterized by X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and dielectric studies. The SEM measurements show...
      PubDate: Fri, 26 Sep 2014 00:00:00 +010
       
 
 
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