For thermoelectric applications, semiconductors are generally better than metals and insulators. PtAs2 and PtP2 are indirect energy gap semiconductors that have been predicted with high thermo-powers (PtP2 having higher thermopower than PtAs2). The crystal structure and the elect...
Open access
Research Article10.9734/psij/2021/v25i230242
In this work, we use analytical methods to describe expansion of Extragalactic Radio Sources (EGRS). Result shows that source size expansion depends on the following parameters: age of the source, lobe internal pressure, ambient medium density, and angle of observation. Moreover,...
Open access
Research Article10.9734/psij/2021/v25i230241
From ground and satellite based observatories, various forms of nonlinear effects and plasma waves instabilities are observed in the Earth’s ionosphere. In this paper we present a brief review on nonlinear wave-particle interaction energy exchange mode plasma maser instability an...
Open access
Research Article10.9734/psij/2021/v25i230240
We calculated the structural, electronic, mechanical and thermal properties of Fe3Al semiconducting using Quantum ESPRESSO, an open source first principles code based on density-functional theory, plane waves, and pseudopotentials. Structural parameter results (equilibrium lattic...
Open access
Research Article10.9734/psij/2021/v25i230239
The paper shows that the Darwin-Breit form of electromagnetic interaction disproves the Aharonov-Bohm assertion about the fundamental meaning of the electromagnetic potentials in quantum theory. A specific analysis of the Aharonov-Bohm electric and magnetic effects substantiates...
Open access
Research Article10.9734/psij/2021/v25i130238
This paper considers a rectangular Volterra dislocation loop lying beneath and parallel to a free surface in a semi-infinite material. The paper utilizes the displacement field of an infinitesimal dislocation loop to obtain the strain field and then integrate over a finite recta...
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Research Article10.9734/psij/2021/v25i130234
Thierry S. M. Ky, Salifou Ouedraogo, Moctar Ousmane, Boureima Dianda, Emmanuel Ouedraogo & Dieudonné J. Bathiebo·Physical Science International Journal·2021
Aims: This paper is about a solar collector made of hemispherical concentrators. This collector is sun tracking free, and used for natural convection. Lenses are used on top of each concentrator to improve its efficiency. Study Design: The Solar collector is made of hemispherical...
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Research Article10.9734/psij/2021/v25i130233
The use of lowlands for refuse collection point (dumpsite) is a very common practice in Nigeria. However, people cultivated the areas within the vicinity of the dumpsites, without knowledge of the risk of these heavy metals. Therefore, this study was done to evaluate the risk of...
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Research Article10.9734/psij/2021/v25i130236
Serge Wendsida Igo, Gaël Lassina Sawadogo, Drissa Ouedraogo, Abdoulaye Compaoré, David Namoano & Joseph Dieudonné Bathiébo·Physical Science International Journal·2021
This work is devoted to a numerical study of the performance of a double insulated barbecue oven using terracotta bricks and plywood. The numerical methodology is based on the nodal method and the heat transfer equations have been established by performing an energy balance on ea...
Open access
Research Article10.9734/psij/2020/v24i1130222
Along with the development of engine technology to be able to produce maximum efficiency in aircraft jet engines, various modifications were made to the machine tools. Modifications are made by taking into account four main factors, namely: maximum power output, reduced engine we...
Open access
Research Article10.9734/psij/2021/v25i130231
A theoretical model that relates the rotational Doppler shift of a photon and the rotational velocity of the lenses traversed by the beam of light, is presented. The mathematical relation, which is resolved in the context of a four-dimensional Minkowski flat spacetime and Cartesi...
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Research Article10.9734/psij/2020/v24i1030220
Regular execution of quality control (QC) tests in medical diagnostic X-ray units is primarily important to provide high-quality images and proper diagnoses with least hazard. The performance criteria in diagnostic radiology in Zanzibar Islands, Tanzania were followed in accordan...
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Research Article10.9734/psij/2020/v24i1230228
The appropriate placements of the four-dimensional spacetimes of different universes make their coexistence possible, such that corresponding points in spacetimes within the universes are not separated in space or time. The corresponding points do not touch, because they are poin...
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Research Article10.9734/psij/2020/v24i1230229
Self-organization in small systems of particles with simple dynamic laws has been simulated. The purpose of this work is to investigate self-organization in small systems where we could follow individual particles. The intention is to look for pattern formation as the system ev...
Open access
Research Article10.9734/psij/2020/v24i1230230
First principles pseudopotential method based on density functional theory is used to investigate the Structural, Mechanical, Phonon, Thermodynamic and Electronic properties of Mg2Sn. The equilibrium properties including lattice constant, bulk modulus, pressure derivative cohesiv...
Open access
Research Article10.9734/psij/2020/v24i1230232