Lead-free tin-halide perovskites are of interest for photovoltaic applications, although simulation-based optimisation can obscure the range of absorber thicknesses that yield comparable performance. This study reanalysed an archived SCAPS-1D dataset for an ITO/SnO₂/MASnI₃/Cu₂O/A...
Open access
Research Article10.9734/ajopacs/2026/v14i4359
Direct methanol fuel cells (DMFCs) are promising electrochemical energy conversion systems; however, the sluggish kinetics of methanol oxidation and the high cost of conventional noble-metal catalysts remain significant challenges. Developing low-cost alternative electrode materi...
Open access
Research Article10.9734/ajopacs/2026/v14i4356
Hospital wastewater contains organic and inorganic pollutants as well as potentially hazardous biological and pharmaceutical constituents. This descriptive case study evaluated selected physicochemical indicators and operational practices at the wastewater treatment plant serving...
Open access
Research Article10.9734/ajopacs/2026/v14i4357
Access to safe water remains a significant concern in rural communities of Nigeria, where springs and streams serve as important sources of domestic water. During the rainy season, surface runoff and anthropogenic activities may increase water contamination. However, comparative...
Open access
Research Article10.9734/ajopacs/2026/v14i4358
Phase engineering of two-dimensional Dirac materials via selective chemical functionalization offers a promising route toward controlling electronic and magnetic properties for nanoscale device integration. Using first-principles density functional theory calculations within the...
Open access
Research Article10.9734/ajopacs/2026/v14i4355
Background: Synoptic wind archives often contain exact zero-speed observations. Treating these observations as missing can distort wind-resource estimates, particularly where calms are frequent. Aims: To measure how treating calm (zero-speed) records in synoptic wind archives cha...
Open access
Research Article10.9734/ajopacs/2026/v14i4354
Natural radionuclide levels and radiological hazard indices in soils from selected farmlands around landfills in Rivers State, Nigeria, were assessed using gamma-ray spectroscopy with a NaI (Ti) detector. The assessment considered 40K, 238U and 232Th at the Aluu, IAUE and Igwurut...
Open access
Research Article10.9734/ajopacs/2026/v14i4353
Atomic absorption spectrophotometry (AAS) was used to determine the total concentrations of heavy metals (Pb, Ni, Zn, Fe, Cd, and Cr) in soil samples from Rumuolumini, Aluu, and Igwuruta communities in Rivers State, Nigeria. The study evaluated metal concentrations, contamination...
Open access
Research Article10.9734/ajopacs/2026/v14i4352
The dielectric response of aqueous glycine was examined from 10 MHz to 30 GHz at seven nominal temperatures between 25 and −5 °C over a reported composition series of 0–1.0 mol L⁻¹. Time-domain reflectometry data were interpreted with a single Cole–Davidson relaxation function to...
Open access
Research Article10.9734/ajopacs/2026/v14i4351
Objective : This study aimed to characterise the dietary sources consumed by elite Chadian combat-sport athletes during the pre-competition period and to quantify the crude protein content and total lipid levels of the main cereals and pulses included in their diets. Design : A d...
Open access
Research Article10.9734/ajopacs/2026/v14i4350
Schistosomiasis remains a major neglected tropical disease across sub-Saharan Africa, and control efforts rely almost entirely on a single drug, praziquantel, which has limited activity against juvenile schistosomes and no paediatric formulation. Medicinal plants therefore contin...
Open access
Research Article10.9734/ajopacs/2026/v14i4349
Bintou Coulibaly, Koffi Pierre dit Adama N’goran, Benjamin Diby Ossonon, Lemeyonouin Aliou Guillaume Pohan, N’Guessan Louis Berenger Kouassi, Mambe Nathan Donald Bogui, Marie Pascale A. Kouakou, Coulibaly Korotoum & Donourou Diabate·Asian Journal of Physical and Chemical Sciences·2026
Methylene blue (MB) is a cationic dye whose removal from contaminated aqueous media is important for wastewater treatment. This study evaluated graphene/iron oxide (EG/Fe₃O₄) and graphene/iron oxide/bismuth oxybromide (EG/Fe₂O₃/BiOBr) composites for MB adsorption. The binary comp...
Open access
Research Article10.9734/ajopacs/2026/v14i4348
This study compared hydrodistillation and steam distillation for the extraction of essential oil from Commiphora myrrha resin and evaluated differences in yield, chemical composition, antioxidant activity, and antimicrobial activity. Steam distillation produced a higher essential...
Open access
Research Article10.9734/ajopacs/2026/v14i4346
N’guessan Kouakou Nobel, Niameke Kangah Jean Baptiste, Ehouman Jean Missa, Dembélé Georges Stéphane, Soro Doh, Ouattara Patrice, Bamba Kafoumba & ZIAO Nahossé·Asian Journal of Physical and Chemical Sciences·2026
Ruthenium polypyridine complexes are of interest because of their cytotoxic activity and their lower toxicity relative to cisplatin. This study applies density functional theory and time-dependent density functional theory to examine structure–cytotoxic activity relationships in...
Open access
Research Article10.9734/ajopacs/2026/v14i3345
Sulfur hexafluoride (SF₆) is widely used in high-voltage circuit breakers because of its insulating properties and interrupting capability, although concerns related to its environmental impact and decomposition products encourage efforts to limit its use. This study determines t...
Open access
Research Article10.9734/ajopacs/2026/v14i3344