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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]
  • Theoretical studies of CO converted to CH3OH by ZINDO/1-DFT methods

    • Abstract: The aim of this study is to simulate co-catalysts of titanium nitride nanotubes (TiN-NTs) with Cu nano-particles for converting carbon monoxide (CO) and water into methanol. This method may provide a new way to reduce carbon-monoxide levels in the atmosphere rising due to our planets heavy use of fossil fuels as well as to produce alternative fuels. Using TiN-NTs has shown the efficiency to ...
      PubDate: Tue, 16 Dec 2014 00:00:00 +010
       
  • Construction of some new exact structures for the nonlinear lattice
           equation

    • Abstract: In the present work we examine a generalized coth and csch functions method to construct new exact travelling solutions to the nonlinear lattice equation. The technique of the homogeneous balance method is used to handle the appropriated solutions. Some exact solutions obtained are new. Key words: Nonlinear lattice, travelling wave solutions.
      PubDate: Tue, 16 Dec 2014 00:00:00 +010
       
  • Primordial radionuclides in potable water from former tin-mining areas
           with elevated activity

    • Abstract: The activity concentrations of the primordial radionuclides in potable water from 2 former mining areas (Bisichi and Bukuru) in Jos, Plateau state in Nigeria have been studied. The activities were determined by a non-destructive analysis using a computerized gamma ray spectrometry system with high purity germanium (HPGe). The results show the average activity concentrations for 226Ra, 232Th ...
      PubDate: Tue, 16 Dec 2014 00:00:00 +010
       
  • Flat gravity based on Hubble’s law which expanded Newtonian gravity

    • Abstract: Hubbles law, formulated by Edwin Hubble and Milton Humason in 1929, tells us that space is expanding. However, over short distances, flat gravity caused by the expanding universe is described by the inverse square law of Newtonian gravity. This leads to heretofore unsolved gravity anomalies, such as the pioneer anomaly, which involves an abnormal slowdown relative to the Sun of the Pioneer s...
      PubDate: Fri, 28 Nov 2014 00:00:00 +010
       
  • Measurement, prediction and modeling the impact of vibration as the
           possibility of protection cultural heritage objects

    • Abstract: This article describes the possibility of using prognostic equations and the theory of fuzzy logic to predict the intensity of vibrations resulting from the use of construction machinery and heavy traffic. Vibrations from construction machinery can be particularly dangerous if they affect heritage buildings. By analyzing the measured results of vibrations at various facilities, we found that...
      PubDate: Fri, 28 Nov 2014 00:00:00 +010
       
  • 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
       
  • 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
       
 
 
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