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
Liquefied petroleum gas (LPG) leakage poses a significant safety risk in domestic and light-industrial environments, particularly where conventional detectors provide only local alarms without automated intervention or remote monitoring. This study designed and implemented a smar...
Open access
Research Article10.9734/ajopacs/2026/v14i3342
Heavy-metal contamination in oil-producing environments may create human-health concerns through ingestion, inhalation and dermal exposure. This study reassessed non-carcinogenic and carcinogenic risks associated with Ni, Cr, Cu, Co, Pb, Cd, Fe, Mn, As and Zn in soil and water fr...
Open access
Research Article10.9734/ajopacs/2026/v14i3341
The hydrodynamic radius of poly(ethylene glycol) 8000 (PEG8K) was estimated using an aqueous two-phase equilibrium approach that requires no advanced analytical instrumentation. PEG8K solutions were prepared in phosphate buffer at pH 7.4 over an ionic-strength range of 1.2–2.0 mo...
Open access
Research Article10.9734/ajopacs/2026/v14i3340
Automobile mechanic activities can introduce potentially toxic metals into surrounding soils through the disposal of spent engine oil, metallic scraps, batteries and other vehicle-related wastes. This study assessed heavy metal contamination, ecological risk and potential human-h...
Open access
Research Article10.9734/ajopacs/2026/v14i3339
This study investigated the corrosion-inhibition behaviour of HNP-PhOH for pure aluminium in 1 M H₂SO₄ using gravimetric measurements and density functional theory (DFT). Mass-loss experiments were conducted over 298–338 K at different HNP-PhOH concentrations. The results showed...
Open access
Research Article10.9734/ajopacs/2026/v14i3338
In this article, four electronic-structure, density-of-states, projected-density-of-states and dielectric/optical datasets were studied to identify the microscopic O 2p−Hf 5d origin of the electronic gap in cubic BaHfO3 and evaluate the reliability of the optical post-processing...
Open access
Research Article10.9734/ajopacs/2026/v14i3337