January 2025

Study of the thermo-hydro-mechanical characteristics of prismatic compressed earth specimens from two brick quarries in the city of Abéché, Chad

The study focuses on the thermo-hygro-mechanical characterization of prismatic samples compressed earth specimens (CECs). Firstly, various sampling sites were located in order to identify them. Thus, the 4 × 4 × 16 cm3 specimens were used for the mechanical tests and the absorption test. In addition, 4 × 5 × 8 cm3 specimens were used for the thermal test. The wood ash content was varied from 0 to...

Author(s): M. S. Abdel-Khadir, Togdjim Jonas, Abderahman A. O., Azibert Oumar Abdelhakh, Mahamoud Y. K. and S. Gaye  

February 2025

Preparation of soft-hard X-ray absorption nanocomposites using PbS, PbSe coated on SWCNTs based polyaniline

The dangers of heavy wave radiation such as X-rays are well known, and current coatings are inefficient, heavy, and expensive. The above project has attempted to provide lightweight, highly efficient, and cheaper absorbers. PbS and PbSe nanoparticles (NPs) were coated successfully on functionalized single wall carbon nanotubes (F-SWCNTs) by chemically and thermochemically reactions. Then, their nanocomposites with...

Author(s): Seyed Hossein Hosseini and A. Falsafi  

March 2025

Estimating the depth of basement rocks within the Guzabure and Gudumbali area of the Nigerian sector of the Chad basin using a spectral analysis technique

This research aims to estimate the depth of basement rocks in the Guzabure and Gudumbali areas with longitude (12.3° to 13.0° N) and latitude (12.3° to 13.3° E) within the Nigerian sector of the Chad basin using aeromagnetic data. The quantitative data interpretation employed the spectral analysis approach and Oasis Montaj 6.4.2 software. Minimum curvature was applied in gridding the data to produce a...

Author(s): Ngozi Agatha Okwesili, John Akor Yakubu and Ossai Ngozi Mmirianrita    

March 2025

Investigating the effect of a base transceiver station (BTS) on the power production of a PV module

In this experimental study, a solar panel was exposed to different intensities of an Electromagnetic Field (EMF) emitted by a base transceiver station (BTS). To avoid influences from other electromagnetic (EM) waves sources the current-voltage characteristics of the PV silicon solar panel was measured, outdoor in free space on an isolated site, in the sub-urban Boassa in West of the Ouagadougou city in Burkina Faso. The...

Author(s): Patrice Wendlassida Compaore, Guy Serge Tchouadep, Adama Ouedraogo, Dioari Ulrich Combari, Issa Zerbo and Martial Zoungrana