This study enumerates the protection values derivable from refractivity variation of the tropospheric surface in Nigeria. The investigation was conducted in four cities of Nigeria using meteorological data of 2008 procured from the centre for basic space science (cbss), universit...
Open access
Research Article10.9734/psij/2020/v24i830208
Jean-Louis Comlan Fannou, Kouandété Valéry Doko, Vincent Prodjinonto, Louis Lamarche, Stanislaw Kajl, Gérard Degan & Emile A. Sanya·Physical Science International Journal·2020
This paper is about modelling in dynamic operation the heat exchanger system using as condenser in one dimension characterized by two coaxial tubes with ribbed inner tube by using the equations of mass, momentum and energy conservation. The Comsol PDE interface is used to simulat...
Open access
Research Article10.9734/psij/2020/v24i830206
The method used to evaluate the quality of concrete in structures includes, among other things, compressive strength testing of specimens cast on site. This method has shortcomings due to the non-uniformity in their formulation processes of the concrete studied in laboratories an...
Open access
Research Article10.9734/psij/2020/v24i830205
Mam D. Tawey, Abbass A. Adetona, Usman D. Alhassan, Abdulwaheed A. Rafiu, Kazeem A. Salako & Emmanuel E. Udensi·Physical Science International Journal·2020
High-resolution aeromagnetic data covering an area of 24, 200 km2 in north central Nigeria has been acquired and analyzed with the aim of carrying out trend analysis, edge detection (structural delineation) and depth to magnetic source estimation using reduce to the pole (RTP), h...
Open access
Research Article10.9734/psij/2020/v24i730203
A research for nano clusters of electrochemically waters catholyte and anolyte was recently performed [1]. The actual study is connected with EVODROP water. Methods NES (Non-equilibrium Energy Spectrum) and DNES (Differential Non-equilibrium Energy Spectrum) are used for the stud...
Open access
Research Article10.9734/psij/2020/v24i730202
Aims: We argue that the choice of a specific qualitative–quantitative set of variables in a model by a conscious observer fundamentally limits the achievable accuracy of the measurement process. Place and Duration of Study: Mechanical & Refrigeration Consultation Expert, betw...
Open access
Research Article10.9734/psij/2020/v24i730201
Aim of this work is to calibrate the high dose rate (HDR) brachytherapy source 60Co. The radioactive source calibration is a very important part of the quality assurance program for dosimetry of brachytherapy source. The goal of this project is the calibration of HDR Brachytherap...
Open access
Research Article10.9734/psij/2020/v24i730200
The anthropogenic global warming theory is based on the greenhouse effect (GH), which is due to the longwave (LW) absorption by GH gases and clouds according to the IPCC. This LW radiation downward is the imminent cause for the GH effect increasing the surface temperature by 33°C...
Open access
Research Article10.9734/psij/2020/v24i730199
The variations of Galactic Cosmic Ray (GCR) as compared with the behaviour of various solar activity indices, heliospheric parameters and the geomagnetic index Ap during 1999-2015, which covers part of cycles 23 and cycle 24 have been studied. Two sets of data were considered, c...
Open access
Research Article10.9734/psij/2020/v24i630198
The successful results of the relativistic form of a quantum field theory that is derived from aLagrangian density justify its general usage. The significance of the Euler-Lagrange equations of a quantum particle is analysed. Many advantages of this approach, like abiding by the...
Open access
Research Article10.9734/psij/2020/v24i630197
In a previous series of 3 articles in this Journal we have looked at the situation when the aquifer desaturates while the riverbed (clogging layer) remained saturated. However it is quite possible that the riverbed itself will desaturate, particularly if the river stage is low a...
Open access
Research Article10.9734/psij/2020/v24i630196
The concentration of NORMs and some toxic heavy metals in some nuts and seeds commonly consumed in the south-western states of Nigeria were investigated. The analysis was done with NaI(TI) spectrometry and Inductively Coupled Plasma (ICP) respectively. The concentration of 226Ra,...
Open access
Research Article10.9734/psij/2020/v24i630195
Aims: The aim of this study is to extend the formula of Newman–Janis algorithm (NJA) and introduce the rules of the complexifying seed metric. The extension of NJA can help determine more generalized axisymmetric solutions in general relativity. Methodology: We perform the extend...
Open access
Research Article10.9734/psij/2020/v24i630194
Ferrite are conventional materials used for microwave absorption, however, they are expensive, constitute health hazard and pollutes the environment. For these reasons, there is need to explore safe and environmental friendly materials that can serve as radiation absorbers and be...
Open access
Research Article10.9734/psij/2020/v24i530192
Kingsley Chukwudi Okpala, Ernest Benjamin Ugwu, Okwudili Joseph Attah, Dominic Obiegbuna, Rose Chigoziri Anamezie & Friday Egbunu·Physical Science International Journal·2020
Changes in vertical total electron content (VTEC) over West Africa which were associated with four geomagnetic storms in 2015 have been studied. The spatial evolution of the quiet time TEC over West Africa for four months (vis; March, June, October and December) which may give ri...
Open access
Research Article10.9734/psij/2020/v24i530193