The presence of naturally occurring radioactive material in surface water may constitute a radiological health concern where such water is used for domestic purposes. This study investigated gross alpha and gross beta activity concentrations and the resulting annual effective dos...
Open access
Research Article10.9734/ajr2p/2026/v10i3241
This study investigates the heat-transfer characteristics of magnetohydrodynamic (MHD) cobalt ferrite (CoFe₂O₄) nanofluid flow within a Cartesian framework. Two thermal-conductivity correlations are incorporated to represent the effective thermal transport of the nanofluid, while...
Open access
Research Article10.9734/ajr2p/2026/v10i3240
This study investigated the effect of high-temperature thermal annealing on the structural, optical, morphological, and electrical properties of electrochemically deposited Cu₂ZnSnS₄ (CZTS) thin films for photovoltaic and optoelectronic applications. CZTS thin films were deposite...
Open access
Research Article10.9734/ajr2p/2026/v10i3239
Accurate estimation of fine particulate matter (PM2.5) remains a major challenge in data-sparse regions such as West Africa because of limited ground-based monitoring networks and highly variable atmospheric conditions. This study evaluated statistical and machine-learning models...
Open access
Research Article10.9734/ajr2p/2026/v10i3238
Degree-based graph entropies quantify structural heterogeneity in molecular networks. However, a unified entropy treatment of polythiophene and its bipolaron counterpart, together with a direct assessment of descriptor redundancy, is still lacking. This study therefore derives cl...
Open access
Research Article10.9734/ajr2p/2026/v10i3237
This study examines magneto-thermal transport in an electrically conducting iron oxide (Fe₃O₄)–water nanofluid flowing through a chemically reactive porous rectangular channel under a transverse magnetic field and thermal radiation. The mathematical model couples the momentum, en...
Open access
Research Article10.9734/ajr2p/2026/v10i3236
Rapid growth in vehicle numbers has increased pressure on limited parking facilities, particularly in commercial areas and public offices. This study designed, simulated, constructed and evaluated a microcontroller-based automatic car parking control system with automatic gate sh...
Open access
Research Article10.9734/ajr2p/2026/v10i3233
This study presents a graph-theoretical and descriptive structure–property analysis of the linear \(\alpha\)-linked oligothiophenes bithiophene, terthiophene, quaterthiophene, sexithiophene, and octithiophene. From the common edge partition of their hydrogen-suppressed molecular...
Open access
Research Article10.9734/ajr2p/2026/v10i3234
The Global Navigation Satellite System (GNSS) was developed to offer precise, accurate, and reliable positioning for various scientific and real-time applications, including everyday communication, navigation, disaster management, and security. Despite the increasing demand to en...
Open access
Research Article10.9734/ajr2p/2026/v10i3232
This study investigated the influence of molybdenum (Mo) doping on the structural, optical, morphological, and electrical properties of zirconium oxide (ZrO2) nanostructured thin films for optoelectronic and photovoltaic applications. Mo-doped ZrO2 thin films were deposited on fl...
Open access
Research Article10.9734/ajr2p/2026/v10i3231