All Outputs (9)

Transport of nanoparticles in porous media and associated environmental impact: a review. (2024)
Journal Article
YUSUF, E.O., AMBER, I., OFFICER, S. and OLUYEMI, G.F. 2024. Transport of nanoparticles in porous media and associated environmental impact: a review. Journal of engineering research [online], In Press. Available from: https://doi.org/10.1016/j.jer.2024.01.006

The release of nanoparticles into the environment occurs at different stages during their life cycle, with significant harmful effects on the human (e.g., lung inflammation and heart problems) and the ecosystem (e.g., soil and groundwater contaminati... Read More about Transport of nanoparticles in porous media and associated environmental impact: a review..

A new approach for quantitative mapping of retention mechanisms of associative polymers in porous media. (2021)
Journal Article
AFOLABI, R.O., OLUYEMI, G.F., OFFICER, S. and UGWU, J.O. 2021. A new approach for quantitative mapping of retention mechanisms of associative polymers in porous media. Journal of molecular liquids [online], 343, article 117685. Available from: https://doi.org/10.1016/j.molliq.2021.117685

The retention of associative polymer molecules poses a significant challenge for its transport in porous media, and this arises due to the hydrophobic interactions that exists between the retained molecules. The known experimental approach in literat... Read More about A new approach for quantitative mapping of retention mechanisms of associative polymers in porous media..

Hydrophobically associating polymers for enhanced oil recovery, part b: a review of modelling approach to flow in porous media. (2019)
Journal Article
AFOLABI, R.O., OLUYEMI, G.F., OFFICER, S. and UGWU, J.O. 2019. Hydrophobically associating polymers for enhanced oil recovery, part b: a review of modelling approach to flow in porous media. Journal of molecular liquids [online], 293, article ID 111495. Available from: https://doi.org/10.1016/j.molliq.2019.111495

Polymer flow in porous media represents an entirely different scenario compared to bulk flow analysis using viscometers. This is due to the geometry and configuration of the medium which is made up of converging-diverging flow paths. In this article,... Read More about Hydrophobically associating polymers for enhanced oil recovery, part b: a review of modelling approach to flow in porous media..

Hydrophobically associating polymers for enhanced oil recovery, part a: a review on the effects of some key reservoir conditions. (2019)
Journal Article
AFOLABI, R.O., OLUYEMI, G.F., OFFICER, S. and UGWU, J.O. 2019. Hydrophobically associating polymers for enhanced oil recovery, part a: a review on the effects of some key reservoir conditions. Journal of petroleum science and engineering [online], 180, pages 681-698. Available from: https://doi.org/10.1016/j.petrol.2019.06.016

Research advancement in polymer flooding for Enhanced Oil Recovery (EOR) has been growing over the last decade. This growth can be tied to increased funding towards the development of superior polymers such as hydrophobically associating polymers whe... Read More about Hydrophobically associating polymers for enhanced oil recovery, part a: a review on the effects of some key reservoir conditions..

Waveguide-based machine readable fluorescence security feature for border control and security applications. (2018)
Conference Proceeding
JOHNY, J., BHAVSAR, K., OFFICER, S., ADAMS, M., PRABHU, R. 2018. Waveguide-based machine readable fluorescence security feature for border control and security applications. In Bouma, H., Prabhu, R., Stokes, R.J. and Yitzhaky, Y. (eds.) Proceedings of the 2nd Counterterrorism, crime fighting, forensics and surveillance technologies 2018 conference: co-located with the Society of Photo-optical Instrumentation Engineers (SPIE) Security and defence conference 2018, 10-13 September 2018, Berlin, Germany. Proceedings of the (SPIE), 10802. Bellingham, WA: SPIE [online], article ID 1080209. Available from: https://doi.org/10.1117/12.2501974

Border security challenges and immigration issues are increasing considerably in recent years. Counterfeiting and fraudulent use of identity and other travel documents are posing serious threats and safety concerns worldwide, ever since the advanceme... Read More about Waveguide-based machine readable fluorescence security feature for border control and security applications..

Novel dysprosium and terbium doped taggants for hydrocarbon identification. (2016)
Journal Article
NKWOADA, A.U. and OFFICER, S. 2016. Novel dysprosium and terbium doped taggants for hydrocarbon indentification. Journal of advanced chemical sciences [online], 2(3), pages 296-298. Available from: https://www.jacsdirectory.com/journal-of-advanced-chemical-sciences/articleview.php?id=102

Taggants are synthesized fluorescent materials that have longer lifetime and are able to discriminate against background interference arising from hydrocarbons. Doped taggants were prepared with dysprosium and terbium rare earths in a stable borosili... Read More about Novel dysprosium and terbium doped taggants for hydrocarbon identification..

Rare elements electrochemistry: the development of a novel electrochemical sensor for the rapid detection of Europium in environmental samples using gold electrode modified with 2-pyridinol-1-oxide. (2015)
Journal Article
CRUICKSHANK, L., OFFICER, S., POLLARD, P., PRABHU, R., STUTTER, M. and FERNANDEZ, C. 2015. Rare elements electrochemistry: the development of a novel electrochemical sensor for the rapid detection of Europium in environmental samples using gold electrode modified with 2-pyridinol-1-oxide. Analytical sciences [online], 31(7), pages 623-627. Available from: https://doi.org/10.2116/analsci.31.623

This work presents for the first time the electrochemical determination of europium using cyclic voltammetry at gold electrodes modified with 2-pyridinol-1-oxide. A well-defined oxidation peak was observed in cyclic voltammetry as a result of the oxi... Read More about Rare elements electrochemistry: the development of a novel electrochemical sensor for the rapid detection of Europium in environmental samples using gold electrode modified with 2-pyridinol-1-oxide..

Improvement in fingerprint detection using Tb(III)-dipicolinic acid complex doped nanobeads and time resolved imaging. (2015)
Journal Article
HAUSER, F.M., KNUPP, G. and OFFICER, S. 2015. Improvement in fingerprint detection using Tb(III)-dipicolinic acid complex doped nanobeads and time resolved imaging. Forensic science international [online], 253, pages 55-63. Available from: https://doi.org/10.1016/j.forsciint.2015.05.010

This paper deals with the synthesis and application of lanthanide complex doped nanobeads used as a luminescent fingerprint powder. Due to their special optical properties, namely a long emission lifetime, sharp emission profiles and large Stokes shi... Read More about Improvement in fingerprint detection using Tb(III)-dipicolinic acid complex doped nanobeads and time resolved imaging..

Alternative strategies for security labelling/encoding of paper and plastic products. (2005)
Thesis
OFFICER, S.J. 2005. Alternative strategies for security labelling/encoding of paper and plastic products. Robert Gordon University, PhD thesis.

A literature and patent review of current optical security techniques has been carried out and identified a need in the market for an improved optical security label to rival molecular fluorescent dyes. The label proposed was a rare earth (RE) doped... Read More about Alternative strategies for security labelling/encoding of paper and plastic products..