Items where Author is "Umar, A.A."

Umar, A.A. and Zawawi, N.A.W.A. and Abdul-Aziz, A.-R. (2021) Malaysian regulators' ranking of PPP contract governance skills. Built Environment Project and Asset Management, 11 (1). pp. 88-102.

Umar, A.A. and Saaid, I.M. and Halilu, A. and Sulaimon, A.A. and Ahmed, A.A. (2020) Magnetic polyester bis-MPA dendron nanohybrid demulsifier can effectively break water-in-crude oil emulsions. Journal of Materials Research and Technology, 9 (6). pp. 13411-13424.

Sulaimon, A.A. and Umar, A.A. and Sulaimon, A.-A.O. and Masri, A.N. and Bello, K.O. (2020) New non-SARA-based correlations for predicting asphaltene deposition. In: UNSPECIFIED.

Abd Rahim, N.S. and Saaid, I.M. and Umar, A.A. (2019) Evaluation of foam performance at different temperature for enhanced oil recovery process. World Journal of Engineering, 16 (3). pp. 412-418.

Umar, A.A. and Zawawi, N.A.W.A. and Abdul-Aziz, A.-R. (2019) Exploratory factor analysis of skills requirement for PPP contract governance. Built Environment Project and Asset Management, 9 (2). pp. 277-290.

Umar, A.A. and Saaid, I.M. and Pilus, R.M. and Sulaimon, A.A. and Negash, B.M. and Abd Rahim, N.S. (2019) Investigation of combined effects of wax, calcites and clay on emulsion stability using response surface methodology. World Journal of Engineering, 16 (6). pp. 751-767.

Umar, A.A. and Saaid, I.B.M. and Sulaimon, A.A. and Pilus, R.B.M. (2018) A review of petroleum emulsions and recent progress on water-in-crude oil emulsions stabilized by natural surfactants and solids. Journal of Petroleum Science and Engineering, 165. pp. 673-690.

Umar, A.A. and Saaid, I.B.M. and Sulaimon, A.A. and Pilus, R.B.M. (2018) A review of petroleum emulsions and recent progress on water-in-crude oil emulsions stabilized by natural surfactants and solids. Journal of Petroleum Science and Engineering, 165. pp. 673-690.

Umar, A.A. and Negash, B.M. and Saaid, I.M. and Sulaimon, A.A. and Pilus, R.M. and Shahpin, H.B.A. and Mohamed, A.S. (2017) Effects of selected process variables on the stability of petroleum emulsions co-stabilized by carbon black and surfactant. Society of Petroleum Engineers - SPE Symposium: Production Enhancement and Cost Optimisation 2017.

Zawawi, N.A.W.A. and Umar, A.A. and Aziz, A.R.A. and Crouzier, O. and Khamidi, M.F. and Idrus, A. (2014) PFI procurement skills: A cross-sector survey of practitioners. In: UNSPECIFIED.

Otairu, A. and Umar, A.A. and Zawawi, N.A.W.A. and Sodangi, M. and Hammad, D.B. (2014) Slow adoption of PPPs in developing countries: Survey of nigerian construction professionals. In: UNSPECIFIED.