Omuluche, Collins O.

Physicochemical Characterisation and Assessment of Oxidative Degradation of Lubricating Oils during Engine Service in Rivers State, Nigeria

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 Article 10.9734/ajoger/2026/v9i3303

Sediment Geochemistry and Benthic Ecological Quality in Coastal Waters of Rivers State, Nigeria

Eyibara, Oghenehokoke U., Abia Uwem B., Asuaiko Ekpedeme R., Okpoji Awajiiroijana U., Iikediuwa, Sandra C., Omuluche, Collins O., Nwauzor J. N., Nwanekwu Akunna M., Onuchukwu Ejikeme E. & Isaac Stanley C. · Asian Journal of Geological Research · 2026

Coastal sediments act as repositories and potential secondary sources of contaminants, while their physicochemical characteristics influence the retention, mobility, and bioavailability of heavy metals. In the Niger Delta, increasing anthropogenic pressures have raised concerns a...

Open access Research Article 10.9734/ajoger/2026/v9i3296