Omuluche, Collins O., Usiabulu, Godsday I., Okpoji, Awajiiroijana U., Akpan, Nsima A., Edodi, Iyam O., Nwanekwu, Akunna M., Wogu S. N., Eyoka, Rowland J., Garuba, Muhammed H. & Onuchukwu, Ejikeme E.·Asian Journal of Geological Research·2026
Lubricating oils undergo progressive chemical and physical changes during engine operation, which can reduce their protective performance. This study assessed the physicochemical characteristics and oxidative degradation of lubricating oil during engine service in Rivers State, N...
Open access
Research Article10.9734/ajoger/2026/v9i3303
Ekesiobi Sandra U., Ekpe, John E., Okpoji, Awajiiroijana U., Hassan Dasuki H., Ekwere Ifiok O., Awortu Raymond C., Etesin Monday U., Nwofia Ugochukwu., Okeke Chioma F. & Nwankwo Austin O.·Asian Journal of Chemical Sciences·2025
This study evaluates the hydrochemical characteristics and trace-metal contamination of drinking-water sources in Brass Island, Bayelsa State, Nigeria, and assesses their potential health implications. Twelve water samples were collected from boreholes, hand-dug wells, and surfac...
Open access
Research Article10.9734/ajocs/2025/v15i6406
Umueni, Uchenna E., Etukudo, Nsikan J., Okoye, Peter I., Okpoji, Awajiiroijana U., Eze Victor C., Aningo Gloria N., Ekwere, Ifiok O. & Garuba Muhammed H.·Asian Journal of Geographical Research·2025
Petroleum hydrocarbon contamination remains a significant environmental issue in the Niger Delta due to intense oil exploration, transportation, and artisanal refining. This study examined the geochemical features and ecological risks associated with petroleum hydrocarbons in sed...
Open access
Research Article10.9734/ajgr/2025/v8i4337
Umueni, Uchenna E., Rasheed Habib O., Edodi Iyam O., Aningo Gloria N., Okpoji, Awajiiroijana U., Etesin Monday U., Okonkwo Chidiebere C., Ekwere Ifiok O., Okeke Chioma F. & Anarah Samuel E.·Asian Journal of Agricultural and Horticultural Research·2025
The present study evaluated the extent of nutrient enrichment and eutrophication potential of the Otuoke River in Bayelsa State as influenced by agricultural runoff. Nine surface water samples were collected from three monitoring stations located upstream, midstream, and downstre...
Open access
Research Article10.9734/ajahr/2025/v12i4424