In this paper, we study the -gravitation theory under the assumption that the standard matter-energy content of the universe is a perfect fluid with linear barotropic equation of state within the framework of Bianchi-Type III model from the class of homogeneous and anisotropic un...
Open access
Research Article10.9734/ajr2p/2021/v4i330145
This paper considers (in general form) the problem of recovering information (size and material parameters) about the scattering object from far-field measurements. The order of solution and functions of each equation for the fields inside and outside the scattering object are di...
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Research Article10.9734/ajr2p/2021/v4i330144
We construct multi-parametric rational solutions to the KdV equation. For this, we use solutions in terms of exponentials depending on several parameters and take a limit when one of these parameters goes to 0. Here we present degenerate rational solutions and give a result witho...
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Research Article10.9734/ajr2p/2021/v4i330143
In the form of two quasi-particles coupled to a core described by the IBM-1 and Triaxil Rotor models, the high-spin states of the Ba and Ce isotopes are studied. Bands based on both (vh11/2)-2 and (configurations are considered, which is found to be appropriate for this region to...
Open access
Research Article10.9734/ajr2p/2021/v4i330142
We follow theoretically the motion of the sodium atoms in vapor state under the influence of a laser mode in (1 + 1) D, which is achieved by introducing different optical filters. In the Dirac interaction representation, the equations of motion are represented via the Bloch form...
Open access
Research Article10.9734/ajr2p/2021/v4i230140
We use analytical methods to develop a mathematical model that expresses the relationship between the linear size of some extragalactic radio sources (EGRS) and their redshift . Result shows that , where . For the purpose of obtaining an empirical relation of similar form, we ca...
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Research Article10.9734/ajr2p/2021/v4i230139
Here we discuss the implications of phase change equations and what bearing they might have on interstellar space travel. The phase change equations are derived from either thermodynamics or statistical mechanics and have a similarity. Then, the main equation for limit of superh...
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Research Article10.9734/ajr2p/2021/v4i230141
Ionospheric scintillation activity over the East African region is often monitored using measurements from the SCIntillation Network Decision Aid (SCINDA) receivers. Many of the SCINDA receivers over East Africa are currently not archiving data and therefore a large part of the r...
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Research Article10.9734/ajr2p/2021/v4i230138
Previous laboratory work using a 0.12 M Epsom salt solution showed that HyPIR Electrolysis, or Hydrogen Production by Infrared Electrolysis, can increase the rate of hydrogen production from a solution of Epsom salt dissolved in water by irradiating the electrolyte with an optimu...
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Research Article10.9734/ajr2p/2021/v4i230137
Recently discovered Weyl semimetals (WSM) have found special place in topological condensed matter studies for they represent first example of massless Weyl fermions found in electronic condensed matter systems. A WSM shows gapless bulk energy spectra with Dirac-like point degene...
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Research Article10.9734/ajr2p/2021/v4i130136
The electronic structure aspect of transition metal dichalcogenides (TMDs) has so far received intensive research interest. NiTe2 is a noble candidate for type-II DSM with Dirac point near the Fermi surface. In this paper we present a systematic investigation of the structural st...
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Research Article10.9734/ajr2p/2021/v4i130135
In this article we investigate the two-dimensional incompressible rotating and stratified, just rotating, just stratified Euler equations, comparing with each other and with the normal Euler equations with the self-similar Ansatz. The motivation of our study is the following th...
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Research Article10.9734/ajr2p/2021/v4i130133
This paper presents measurement and evaluation of radiation power density emitted from mobile cellular base stations in Abuja and it’s environ. Forty (40) mobile base stations with ten (10) each from AIRTEL, ETISALAT, GLO and MTN located in areas with high population were randoml...
Open access
Research Article10.9734/ajr2p/2021/v4i130132
The scattering of electromagnetic plane waves by triangular prism and its truncated form (the isosceles triangle and the trapezoid are transverse sections, respectively) has been studied in order to determine possibility of high field intensity (photonic jet) formation. Using hig...
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Research Article10.9734/ajr2p/2021/v4i130131
This study presents the modeling of the distribution of RF intensities from the Digital Terrestrial Television (DTTV) broadcasting transmitter in Kampala metropolitan. To achieve this, the performance evaluation of the different path loss propagation models and envisaging the on...
Open access
Research Article10.9734/ajr2p/2020/v3i430130