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Professor James Njuguna


Mechanical structural design of a MEMS-based piezoresistive accelerometer for head injuries monitoring: a computational analysis by increments of the sensor mass moment of inertia. (2018)
Journal Article
MESSINA, M., NJUGUNA, J. and PALAS, C. 2018. Mechanical structural design of a MEMS-based piezoresistive accelerometer for head injuries monitoring: a computational analysis by increments of the sensor mass moment of inertia. Sensors [online], 18(1), article number 289. Available from: https://doi.org/10.3390/s18010289

This work focuses on the proof-mass mechanical structural design improvement of a tri-axial piezoresistive accelerometer specifically designed for head injuries monitoring where medium-G impacts are common; for example, in sports such as racing cars... Read More about Mechanical structural design of a MEMS-based piezoresistive accelerometer for head injuries monitoring: a computational analysis by increments of the sensor mass moment of inertia..

Removal of lead (II) from aqeouos waste using (CD-PCL-TiO2) bio-nanocomposites. (2017)
Journal Article
SEEMA, K.M., MAMBA, B.B., NJUGUNA, J., BAKHTIZIN, R.Z. and MISHRA, A.K. 2018. Removal of lead (II) from aqeouos waste using (CD-PCL-TiO2) bio-nanocomposites. International journal of biological macromolecules [online], 109, pages 136-142. Available from: https://doi.org/10.1016/j.ijbiomac.2017.12.046

Lead (Pb) pollution is our water system is a major concern, as this metal is toxic even at low concentration. This study aim to fabricate a bio-nanocomposite (cyclodextrin-polycaprolactone titanium dioxide) that will be used as an adsorbent for the r... Read More about Removal of lead (II) from aqeouos waste using (CD-PCL-TiO2) bio-nanocomposites..

Insulating polymer nanocomposites for high thermal conduction and fire retarding applications. (2017)
Presentation / Conference
GUPTA, R., HUO, D., PANCHOLI, M., NJUGUNA, J. and PANCHOLI, K. 2017. Insulating polymer nanocomposites for high thermal conduction and fire retarding applications. Presented at the 3rd Defence and security doctoral symposium, 14-15 November 2017, Swindon, UK [online]. Available from: https://doi.org/10.17862/cranfield.rd.5675281.v1

The possibility of combining the flexibility and light - weight of polymers with the highest insulation of ceramics, drives the field of nanocomposites for potential commercial application. The inclusion of nano-sized insulating particles in the poly... Read More about Insulating polymer nanocomposites for high thermal conduction and fire retarding applications..

Computational analysis and optimization of a MEMS-based piezoresistive accelerometer for head injuries monitoring. (2017)
Conference Proceeding
MESSINA, M., NJUGUNA, J. and PALAS, C. 2017. Computational analysis and optimization of a MEMS-based piezoresistive accelerometer for head injuries monitoring. In Proceedings of the 2017 IEEE sensors conference, 29 October - 1 November 2017, Glasgow, UK. New York: IEEE [online], article number 8233897, pages 91-93. Available from: https://doi.org/10.1109/ICSENS.2017.8233897

This work focuses on the design improvement of a tri-axial piezoresistive accelerometer specifically designed for head injuries monitoring where medium-G impacts are common, for example in sports such as racing cars. The device requires the highest s... Read More about Computational analysis and optimization of a MEMS-based piezoresistive accelerometer for head injuries monitoring..

Computational analysis and optimization of a MEMS-based piezoresistive accelerometer for head injuries monitoring. (2017)
Presentation / Conference
MESSINA, M., NJUGUNA, J. and PALAS, C. 2017. Computational analysis and optimization of a MEMS-based piezoresistive accelerometer for head injuries monitoring. Presented at the 2017 IEEE sensors conference, 29 October - 1 November 2017, Glasgow, UK.

This work focuses on the design improvement of a tri-axial piezoresistive accelerometer specifically designed for head injuries monitoring where medium-G impacts are common, for example in sports such as racing cars. The device requires the highest s... Read More about Computational analysis and optimization of a MEMS-based piezoresistive accelerometer for head injuries monitoring..

Assessment of nanoparticles release into the environment during drilling of carbon nanotubes/epoxy and carbon nanofibres/epoxy nanocomposites. (2017)
Journal Article
STAROST, K., FRIJNS, E., VAN LAER, J., FAISAL, N., EGIZABAL, A., ELIZEXTEA, C., BLAZQUEZ, M., NELISSEN, I. and NJUGUNA, J. 2017. Assessment of nanoparticles release into the environment during drilling of carbon nanotubes/epoxy and carbon nanofibres/epoxy nanocomposites. Journal of hazardous materials [online], 340, pages 57-66. Available from: https://doi.org/10.1016/j.jhazmat.2017.06.057

The risk assessment, exposure and understanding of the release of embedded carbon nanotubes (CNTs) and carbon nanofibers (CNFs) from commercial high performance composites during machining processes is yet to be fully evaluated and quantified. In thi... Read More about Assessment of nanoparticles release into the environment during drilling of carbon nanotubes/epoxy and carbon nanofibres/epoxy nanocomposites..

Theoretical design and analysis of a sensing system for high pressure and temperature measurement in subsea underwater applications. (2017)
Conference Proceeding
AMOS, S., PRABHU, R. and NJUGUNA, J. 2017. Theoretical design and analysis of a sensing system for high pressure and temperature measurement in subsea underwater applications. In Proceedings of OCEANS 2017, 19-22 June 2017, Aberdeen, UK. New York: IEEE [online], article number 8085023, pages 2680-2686. Available from: https://doi.org/10.1109/OCEANSE.2017.8085023

The theoretical design and analysis of a metal coated hybrid sensing system of Fibre Bragg Grating (FBG) and Extrinsic Fabry-Perot Interferometer (EFPI) cavity for high pressure high temperature (HPHT) measurement in subsea underwater applications is... Read More about Theoretical design and analysis of a sensing system for high pressure and temperature measurement in subsea underwater applications..

The effect of nanosilica (SiO2) and nanoalumina (Al2O3) reinforced polyester nanocomposites on aerosol nanoparticle emissions into the environment during automated drilling. (2017)
Journal Article
STAROST, K., FRIJNS, E., VAN LAER, J., FAISAL, N., EGIZABAL, A., ELIZEXTEA, C., NEILSSEN, I., BALZQUEZ, M. and NJUGUNA, J. 2017. The effect of nanosilica (SiO2) and nanoalumina (Al2O3) reinforced polyester nanocomposites on aerosol nanoparticle emissions into the environment during automated drilling. Aerosol science and technology [online], 51(9), pages 1035-1046. Available from: https://doi.org/10.1080/02786826.2017.1330535

The aim of this study is to investigate the effect nanosilica and nanoalumina has on nanoparticle release from industrial nanocomposites due to drilling for hazard reduction whilst simultaneously obtaining the necessary mechanical performance. This s... Read More about The effect of nanosilica (SiO2) and nanoalumina (Al2O3) reinforced polyester nanocomposites on aerosol nanoparticle emissions into the environment during automated drilling..

Elaboration of properties of graphene oxide reinforced epoxy nanocomposites. (2017)
Journal Article
BARI, P., KHAN, S., NJUGUNA, J. and MISHRA, S. 2017. Elaboration of properties of graphene oxide reinforced epoxy nanocomposites. International journal of plastics technology [online], 21(1), pages 194-208. Available from: https://doi.org/10.1007/s12588-017-9180-9

In this research work, properties of graphene oxide (GO) based epoxy nanocomposites, prepared via the solution blending method, are elaborated. Different loadings (0.1-0.5 wt%) of GO were added into epoxy resin, and their effects were studied on thei... Read More about Elaboration of properties of graphene oxide reinforced epoxy nanocomposites..

Oil based drilling fluid waste: an overview on environmentally persistent pollutants. (2017)
Journal Article
SIDDIQUE, S., KWOFFIE, L., ADDAE-AFOAKWA, K., YATES, K. and NJUGUNA, J. 2016. Oil based drilling fluid waste: an overview on environmentally persistent pollutants. IOP conference series: materials science and engineering [online], 195: proceedings of the 3rd International conference on structural nano composites (NANOSTRUC 2016), 12-16 September 2016, Aberdeen, UK, article number 012008. Available from: https://doi.org/10.1088/1757-899X/195/1/012008

Operational discharges of spent drilling fluid, produced water, and accumulated drill cuttings from oil and gas industry are a continuous point source of environmental pollution. To meet the strict environmental standard for waste disposal, oil and g... Read More about Oil based drilling fluid waste: an overview on environmentally persistent pollutants..