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Journal Cover International Journal of Physical Sciences
  [SJR: 0.12]   [H-I: 21]   [0 followers]  Follow
    
  This is an Open Access Journal Open Access journal
   ISSN (Print) 1992-1950
   Published by Academic Journals Homepage  [108 journals]
  • Simulation of precipitation variations in Iran using Kriging interpolation
           methods

    • Abstract: This study estimated spatial variability of precipitation in the monthly and annual scales in Iran for the period of 1975 to 2014 in 140 stations using kriging interpolation methods. In precipitation variability analysis three procedures were used: Mann-Kendall test, Sens slope estimator and spatial trend patterns. Results show that there are both increasing and decreasing trends in monthly ...
      PubDate: Wed, 16 Aug 2017 00:00:00 +010
       
  • Influence of solar and geomagnetic activity on climate change in Nigeria

    • Abstract: This study investigates the possible effects of solar and geomagnetic activity on climatic parameters in Nigeria. Data of sunspot number and geomagnetic aa index from 1950 2012 and 1950 2010 were used as solar indices respectively. Monthly mean daily rainfall, minimum and maximum temperature data from 1950 2012 for 15 stations were used as climatic parameters. Descriptive and bivariate an...
      PubDate: Wed, 16 Aug 2017 00:00:00 +010
       
  • Variability of maximum temperature and its decadal anomaly over Nigeria:
           Possible connection with Solar and geomagnetic activity

    • Abstract: This work investigates the variability of maximum temperature and its decadal anomaly in Nigeria and the possible role of Solar and geomagnetic activity. Descriptive, bivariate and spectral analyses, as well as Mann-Kendall trend test, were employed in analyzing the data used in this study. Temperature anomaly was computed using the base period, 1981 2010. Results revealed that seasonally, ...
      PubDate: Sun, 30 Jul 2017 00:00:00 +010
       
  • Estimation of depth to magnetic source bodies of Nsukka and Udi areas
           using spectral analysis approach

    • Abstract: The study was aimed at estimating the depth to magnetic source bodies in Nsukka and Udi areas which falls within the Anambra basin. Aeromagnetic data were used and Spectral Analysis approach was employed in the quantitative interpretation. The total magnetic intensity (TMI) contour map which ranges from -53.1 to 133.7 nanoTesla (nT) was separated into regional and residual contour maps to pr...
      PubDate: Sun, 16 Jul 2017 00:00:00 +010
       
  • Omnidirectional High Reflectors using 1-D Photonic Crystals

    • Abstract: Much interest has been paid to omnidirectional dielectric mirrors based on the 1-D dielectric multilayers because these are better than metal mirrors owing to their low optical loss, high reflectivity and high mechanical robustness. In these applications, the required position and width of the reflection band can be obtained by adjusting the layer thickness and refractive indices of the cons...
      PubDate: Fri, 30 Jun 2017 00:00:00 +010
       
  • A derivation of the Kerr metric by ellipsoid coordinate transformation

    • Abstract: Einsteins general relativistic field equation is a nonlinear partial differential equation that lacks an easy way to obtain exact solutions. The most famous of which are Schwarzschild and Kerrs black hole solutions. Kerr metric has astrophysical meaning because most cosmic celestial bodies rotate. Kerr metric is even harder than Schwarzschild metric to be derived directly due to off-diagonal...
      PubDate: Thu, 22 Jun 2017 00:00:00 +010
       
  • Energy levels and reduced transition probabilities of 18-20F isotopes
           using USDA and W Hamiltonians

    • Abstract: Energy levels for (18F, 19F and 20F) isotopes have been studied within the framework of shell model using OXBASH code. In this work, the calculations are based on the Universal Sd-shell Hamiltonian (USDA) and W Hamiltonians for proton and neutron particle orbits in SDPN model space. The calculated energy levels and reduced electric quadrupole transition probabilities B(E2;) are in reasonably...
      PubDate: Tue, 30 May 2017 00:00:00 +010
       
  • Investigation of possible cause of gravity anomalies in parts of the Niger
           Delta Basin, Nigeria

    • Abstract: Possible cause of gravity anomalies in parts of the Niger Delta Basin, Nigeria was investigated using three methods of gravity data interpretation; Euler-3D deconvolution, source parameter imaging (SPI) and forward and inverse modeling. The estimated depths from the interpretation techniques used show much similarity. Quantitatively, the results obtained from the SPI method showed a minimum ...
      PubDate: Sun, 21 May 2017 00:00:00 +010
       
  • Determinations of norfloxacin complexes with caffeine, and its optical
           transition probabilities using UV-Vis spectroscopy

    • Abstract: The optical transition probabilities and hetero-association of caffeine with norfloxacin were obtained using UV-Vis spectroscopy in aqueous solution at room temperature (295K). The heter-association constant of norfloxacin-caffeine complexes (6.67103 M-1) was obtained using Benesi-Hildebrand approach by linear curve fitting to the experimental data. In order to characterize the binding syste...
      PubDate: Sun, 30 Apr 2017 00:00:00 +010
       
  • Doppler fading communication channel performance simulation

    • Abstract: Fading is commonly used to describe the properties of the communication channel. Large efforts have been made to describe characteristics of the channel in wireless communication system. The performance of wireless signal propagation in a conventional environment needs Doppler fading channel schemes by assuming a perfect knowledge about the channel frequency response at both the transmitter ...
      PubDate: Sat, 22 Apr 2017 00:00:00 +010
       
 
 
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