All Outputs (14)

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], 12(2), pages 275-284. 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..

Determination of a critical separation concentration for associative polymers in porous media based on quantification of dilute and semi-dilute concentration regimes. (2020)
Journal Article
AFOLABI, R.O., OLUYEMI, G.F., OFFICER, S. and UGWU, J.O. 2020. Determination of a critical separation concentration for associative polymers in porous media based on quantification of dilute and semi-dilute concentration regimes. Journal of molecular liquids [online], 317, article ID 114142. Available from: https://doi.org/10.1016/j.molliq.2020.114142

Hydrophobic interactions are an inherent property of associative polymers which results in the formation of molecular aggregates. The loss of hydrophobic interactions under reservoir conditions have been reported, and this results in increased fluid... Read More about Determination of a critical separation concentration for associative polymers in porous media based on quantification of dilute and semi-dilute concentration regimes..

Fluorescence lifetime assisted enhanced security feature in travel documents for border control and security applications. (2019)
Presentation / Conference Contribution
JOHNY, J., OFFICER, S., FUNG, W. K. and PRABHU, R. 2019. Fluorescence lifetime assisted enhanced security feature in travel documents for border control and security applications. In Bouma, H., Prabhu, R., Stokes, R.J. and Yitzhaky, Y. (eds.) Proceedings of the 3rd Counterterrorism, crime fighting, forensics, and surveillance technologies conference 2019: co-located with the Society of Photo-Optical Instrumentation Engineers (SPIE) Security and defence 2019 conference, 9-12 September 2019, Strasbourg, France. Proceedings of the SPIE, 11166. Bellingham, WA: SPIE [online], article ID 1116608. Available from: https://doi.org/10.1117/12.2535742

Border management and security challenges are increasing considerably in recent years. One of the major concerns is counterfeiting and fraudulent use of identity and other travel documents for crossing border controls. This poses serious threats and... Read More about Fluorescence lifetime assisted enhanced security feature in travel documents for border control and security applications..

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..

Optical fibre-based minimally-invasive blood glucose monitoring system. (2018)
Thesis
VISWAMBARAN, V. 2018. Optical fibre-based minimally-invasive blood glucose monitoring system. Robert Gordon University [online], MRes thesis. Available from: https://openair.rgu.ac.uk

Obesity and changing lifestyles have made diabetes mellitus one of the world’s foremost metabolic syndromes, affecting the lives of around 380 million people worldwide. Although considered incurable, adverse effects of diabetes can be controlled by t... Read More about Optical fibre-based minimally-invasive blood glucose monitoring system..

Waveguide-based machine readable fluorescence security feature for border control and security applications. (2018)
Presentation / Conference Contribution
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..

Development of novel lanthanide based particle tracers for rapid monitoring of soil erosion. (2016)
Thesis
CRUICKSHANK, L. 2016. Development of novel lanthanide based particle tracers for rapid monitoring of soil erosion. Robert Gordon University, PhD thesis.

Soil erosion is a global problem, affecting much of the world's agricultural land. As the world's population increases, the pressures placed upon the land resource to provide space for food production, leisure, housing and industrial facilities also... Read More about Development of novel lanthanide based particle tracers for rapid monitoring of soil erosion..

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..

Sustainable development of an integrated solid waste and wastewater treatment. (2012)
Thesis
WONG, L.S. 2012. Sustainable development of an integrated solid waste and wastewater treatment. Robert Gordon University, PhD thesis.

This PhD thesis investigated solid and liquid waste treatment systems for Sureclean, a waste Management company based in the North of Scotland. Sureclean receives a diverse range of waste streams and the increasing need for sustainable development as... Read More about Sustainable development of an integrated solid waste and wastewater treatment..

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..