Recent Submissions

  • Assessment of nanoparticles release into the environment during drilling of carbon nanotubes/epoxy and carbon nanofibres/epoxy nanocomposites. 

    Starost, Kristof; Frijns, Evelien; Van Laer, Jo; Faisal, Nadimul Haque; Egizabal, Ainhoa; Elizextea, Cristina; Blazquez, Maria; Nelissen, Inge; Njuguna, James
    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], In Press. 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 ...
  • Evaluation of the performance of α-alumina nano-porous ceramic composite membrane for esterification applications in petroleum refinery. 

    Okon, Edidiong; Shehu, Habiba; Gobina, Edward (Elsevier https://doi.org/10.1016/j.cattod.2017.05.089, 2017-06-10)
    OKON, E., SHEHU, H. and GOBINA, E. 2017. Evaluation of the performance of α-alumina nano-porous ceramic composite membrane for esterification applications in petroleum refinery. Catalysis today [online], In Press. Available from: https://doi.org/10.1016/j.cattod.2017.05.089
    The carrier gas permeation performance through α-alumina nano-porous ceramic membrane was investigated in this study. The four carrier gases used for the study were argon (Ar), helium (He), nitrogen (N2) and carbon dioxide ...
  • Influence of post-treatment on the microstructural and tribomechanical properties of suspension thermally sprayed WC-12 wt%Co nanocomposite coatings. 

    Ali, O.; Ahmed, R.; Faisal, Nadimul Haque; Alanazi, Nayef M.; Berger, L.-M.; Kaiser, A.; Toma, F.-L.; Polychroniadis, E. K.; Sall, M.; Elakwah, Y.O.; Goosen, M. F. A. (Springer https://doi.org/10.1007/s11249-017-0815-y, 2017-01-19)
    ALI, O., AHMED, R., FAISAL, N.H., ALANAZI, N.M., BERGER, L.-M., KAISER, A., TOMA, F.-L., POLYCHRONIADIS, E.K., SALL, M., ELAKWAH, Y.O. and GOOSEN, M.F.A. 2017. Influence of post-treatment on the microstructural and tribomechanical properties of suspension thermally sprayed WC-12 wt%Co nanocomposite coatings. Tribology letters [online], 65(2), article 33. Available from: https://doi.org/10.1007/s11249-017-0815-y
    The potential to improve the tribomechanical performance of HVOF-sprayed WC-12Co coatings was studied by using aqueous WC-12Co suspensions as feed-stock. Both as-sprayed and hot-isostatic-pressed (HIPed) coatings were ...
  • Study on the structural, morphological and optical properties of RF-sputtered dysprosium-doped barium tungstate thin films. 

    Hridya, S.; Kavitha, V. S.; Chalana, S. R.; Reshmi Krishnan, R.; Sreeja Sreedharan, R.; Suresh, S.; Nampoori, V. P. N.; Sankararaman, S.; Prabhu, Radhakrishna; Pillai, V. P. Mahadevan (Springer https://doi.org/10.1007/s11837-017-2360-4, 2017-04-27)
    HRIDYA, S., KAVITHA, V.S., CHALANA, S.R., RESHMI KRISHNAN, R., SREEJA SREEDHARAN, R., SURESH, S., NAMPOORI, V.P.N., SANKARARAMAN, S., PRABHU, R. and MAHADEVAN PILLAI, V.P. 2017. Study on the structural, morphological and optical properties of RF-sputtered dysprosium-doped barium tungstate thin films. Journal of the minerals, metals and materials society [online], Online First. Available from: https://doi.org/10.1007/s11837-017-2360-4
    Barium tungstate films with different Dy3+ doping concentrations, namely 0 wt.%, 1 wt.%, 3 wt.% and 5 wt.%, are deposited on cleaned quartz substrate by radio frequency magnetron sputtering technique and the prepared films ...
  • Recovery of VOC from offshore and onshore shuttle tankers using structured Y-type zeolite membranes. 

    Habiba, Shehu; Ajayi, Adebayo; Okon, Edidiong; Gobina, Edward (Springer https://doi.org/10.1007/978-981-10-2717-8_38, 2017-03-13)
    HABIBA, S., AJAYI, A., EDIDIONG, O. and GOBINA, E. 2017. Recovery of VOC from offshore and onshore shuttle tankers using structured Y-type zeolite membranes. In Ao, SI., Kim, H.K. and Amouzegar, M.A. (eds.) Transactions on engineering technologies: revised selections from proceedings of the World congress on engineering and computer science 2015 (WCECS 2015), 21 - 23 October 2015, San Francisco, USA. Singapore: Springer [online], pages 541-553. Available from: https://doi.org/10.1007/978-981-10-2717-8_38
    The emissions of volatile organic compounds (VOCs) from onshore and offshore facilities are studied and an alternative technology for the recovery of methane and propane by the use of membrane technology is explored. ...
  • Futuristic nanomaterials and composites: part II. 

    Kim, Chang-Soo; Lehmhus, Dirk; Njuguna, James; Paramsothy, Muralidharan; Shofner, Meisha Lei (Springer https://doi.org/10.1007/s11837-015-1685-0, 2015-10-28)
    KIM, C-S., LEHMHUS, D., NJUGUNA, J., PARAMSOTHY, M. and SHOFNER, M.L. 2015. Futuristic nanomaterials and composites: part II. JOM [online], 68(1), pages 261-264. Available from: https://doi.org/10.1007/s11837-015-1685-0
    The present special topic "Futuristic Nanomaterials and Composites: Part II" is a continuation of last month's topic "Futuristic Nanomaterials and Composites: Part I". In this continuation, inspiration is once again drawn ...
  • Thermal, mechanical and rheological behaviors of nanocomposites based on UHMWPE/paraffin oil/carbon nanofiller obtained by using different dispersion techniques. 

    Visco, Annamaria; Yousef, Samy; Galtieri, Giovanna; Nocita, Davide; Pistone, Alessandro; Njuguna, James (Springer https://doi.org/10.1007/s11837-016-1845-x, 2016-02-19)
    VISCO, A., YOUSEF, S., GALTIERI, G., NOCITA, D., PISTONE, A. and NJUGUNA, J. 2016. Thermal, mechanical and rheological behaviors of nanocomposites based on UHMWPE/paraffin oil/carbon nanofiller obtained by using different dispersion techniques. JOM [online], 68(4), pages 1078-1089. Available from: https://doi.org/10.1007/s11837-016-1845-x
    Ultra-high molecular weight polyethylene (UHMWPE) is a very attractive polymer employed as a high performance material. For its high viscosity, dispersion of fillers is considered a critical point in UHMWPE nanocomposites ...
  • Preparation and analysis of multi-layered hybrid nanostructures. 

    Khobragade, Prashant S.; Hansora, D. P.; Naik, Jitendra B.; Njuguna, James; Mishra, Satyendra (Elsevier https://doi.org/10.1016/j.clay.2016.08.022, 2016-09-01)
    KHOBRAGADE, P.S., HANSORA, D.P., NAIK, J.B., NJUGUNA, J. and MISHRA, S. 2016. Preparation and analysis of multi-layered hybrid nanostructures. Applied clay science [online], 132-133, pages 668-674. Available from: https://doi.org/10.1016/j.clay.2016.08.022
    In this study, we report a simple and efficient (bath ultrasonication) method for the preparation of multi-functional layered hybrid nanostructures using graphene oxide (GO) and modified Mg-Al layered double hydroxides ...
  • The effect of nanosilica (SiO2) and nanoalumina (Al2O3) reinforced polyester nanocomposites on aerosol nanoparticle emissions into the environment during automated drilling. 

    Starost, Kristof; Frijns, Evelien; Van Laer, Jo; Faisal, Nadimul Haque; Egizabal, Ainhoa; Elizextea, Cristina; Nelissen, Inge; Blazquez, Maria; Njuguna, James
    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], (accepted).
    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 ...
  • Neutron diffraction residual strain measurements of molybdenum carbide-based solid oxide fuel cell anode layers with metal oxides on Hastelloy X. 

    Faisal, Nadimul Haque; Ahmed, R.; Prathuru, Anil Kumar; Katikaneni, S.P.; Goosen, M. F. A.; Zhang, Shu Yan (Springer https://doi.org/10.1007/s11340-017-0298-7, 2017-05-31)
    FAISAL, N.H., AHMED, R., PRATHURU, A.K., KATIKANENI, S.P., GOOSEN, M.F.A. and ZHANG, S-Y. 2017. Neutron diffraction residual strain measurements of molybdenum carbide-based solid oxide fuel cell anode layers with metal oxides on Hastelloy X. Experimental mechanics [online], First Online. Available from: https://doi.org/10.1007/s11340-017-0298-7
    Thermal spray deposition processes impart residual stress in layered Solid Oxide Fuel Cells (SOFC) materials and hence influence the durability and efficiency of the cell. The current study which is the first of its kind, ...
  • Physico-mechanical properties of nano polystyrene (nPS) decorated graphene oxide (GO) -epoxy composites. 

    Khobragade, Prashant S.; Hansora, D. P.; Naik, Jitendra B.; Njuguna, James; Mishra, Satyendra (Wiley https://doi.org/10.1002/pi.5392, 2017-04-26)
    KHOBRAGADE, P.S., HANSORA, D.P., NAIK, J.B., NJUGUNA, J. and MISHRA, S. 2017. Physico-mechanical properties of nano polystyrene (nPS) decorated graphene oxide (GO) -epoxy composites. Polymer international [online], Accepted Articles. Available from: https://doi.org/10.1002/pi.5392
    In this work, nano polystyrene (nPS) decorated graphene oxide (GO) hybrid nanostructures were successfully synthesized using stepwise micro emulsion polymerization, and characterized by Fourier transform infrared spectroscopy ...
  • Core-double shell hybrid nanocomposites as multi-fuctional advanced materials. 

    Khobragade, Prashant S.; Hansora, D. P.; Naik, Jitendra B.; Njuguna, James; Mishra, Satyendra (Springer https://doi.org/10.1007/s00289-017-1983-5, 2017-03-20)
    KHOBRAGADE, P.S., HANSORA, D.P., NAIK, J.B., NJUGUNA, J. and MISHRA, S. 2017. Core-double shell hybrid nanocomposites as multi-fuctional advanced materials. Polymer bulletin [online], First Online. Available from: https://doi.org/10.1007/s00289-017-1983-5
    In this research work, we report circular type silane-modified CaCO3 (as core) nanoparticles (NP) encapsulated with polystyrene (PS) and polymethyl methacrylate (PMMA) (as double shell layers). These core-double shell ...
  • Effect of multi-layered nanostructures on the physico-mechanical properties of ethylene vinyl acetate based hybrid nanocomposites. 

    Khobragade, Prashant S.; Hansora, D. P.; Naik, Jitendra B.; Njuguna, James; Mishra, Satyendra (Wiley https://doi.org/10.1002/pc.24371, 2017-04-12)
    KHOBRAGADE, P.S., HANSORA, D.P., NAIK, J.B., NJUGUNA, J. and MISHRA, S. 2017. Effect of multi-layered nanostructures on the physico-mechanical properties of ethylene vinyl acetate based hybrid nanocomposites. Polymer composites [online], Early View. Available from: https://doi.org/10.1002/pc.24371
    Exfoliated graphene oxide (GO) and Mg-Al-layered double hydroxides (LDHs) nanostructures (LDHs@GO)-filled ethylene vinyl acetate (EVA)-based hybrid nanocomposites were prepared by solution reflux technique followed by ...
  • Properties of a high-current discharge in alkali-metal-seeded rare gases. 

    Ellington, Henry I. (Aberdeen University Robert Gordon's Institute of Technology. School of Physics, 1969-04-01)
    ELLINGTON, H.I. 1969. Properties of a high-current discharge in alkali-metal-seeded rare gases. Robert Gordon's Institute of Technology, PhD thesis.
    This thesis is an account of a detailed investigation of the properties of a recently-discovered gas discharge - a discharge that operates at a few volts or tens of volts, and which carries a current of the order of amps ...
  • Double skin façade: modelling technique and influence of venetian blinds on the airflow and heat transfer. 

    Iyi, Draco; Hasan, Reaz; Penlington, Roger; Underwood, Chris (Elsevier https://doi.org/10.1016/j.applthermaleng.2014.06.024, 2014-06-24)
    IYI, D., HASAN, R., PENLINGTON, R. and UNDERWOOD, C. 2014. Double skin façade: modelling technique and influence of venetian blinds on the airflow and heat transfer. Applied thermal engineering [online], 71(1), pages 219-229. Available from: https://doi.org/10.1016/j.applthermaleng.2014.06.024
    The demand to reduce building cooling load and annual energy consumption can be optimised with the use of Double Skin Facade (DSF). Computational Fluid Dynamics (CFD) methods are frequently used for the analysis of heat ...
  • Effect of emissivity on the heat and mass transfer of humid air in a cavity filled with solid obstacles. 

    Iyi, Draco; Hasan, Reaz; Penlington, Roger (Taylor and Francis https://doi.org/10.1080/10407782.2014.937261, 2014-12-10)
    IYI, D., HASAN, R. and PENLINGTON, R. 2015. Effect of emissivity on the heat and mass transfer of humid air in a cavity filled with solid obstacles. Numerical heat transfer, part A: applications [online], 67(5), pages 531-546. Available from: https://doi.org/10.1080/10407782.2014.937261
    The work reported here is a 2D numerical study on the buoyancy-driven low-speed turbulent flow of humid air inside a rectangular cavity partially filled with solid cylindrical objects for a Rayleigh number of 1.45 × 109. ...
  • Numerical investigation of nanostructured silica PCFs for sensing applications. 

    Johny, Jincy; Prabhu, Radhakrishna; Fung, Wai-Keung (Springer https://doi.org/10.1007/s11837-017-2366-y, 2017-05-03)
    JOHNY, J., PRABHU, R. and FUNG, W.K. 2017. Numerical investigation of nanostructured silica PCFs for sensing applications. Journal of The Minerals, Metals and Materials Society [online], Latest Articles. Available from: https://doi.org/10.1007/s11837-017-2366-y
    Photonic crystal fibers (PCFs) developed using nanostructured composite materials provide special optical properties. PCF light propagation and modal characteristics can be tailored by modifying their structural and material ...
  • Modular multilevel converter modulation using fundamental switching selective harmonic elimination method. 

    Sinha, Yashwant; Nampally, Ashok (IEEE https://doi.org/10.1109/ICRERA.2016.7884431, 2016-11-20)
    SINHA, Y. and NAMPALLY, A. 2016. Modular multilevel converter modulation using fundamental switching selective harmonic elimination method. In Proceedings of the 5th IEEE international conference on renewable energy research and applications (ICRERA 2016), 20 -23 November 2016, Birminham, UK. New York: IEEE [online], pages 736-741. Available from: https://doi.org/10.1109/ICRERA.2016.7884431.
    This paper address the issue of low order harmonics in a modular multilevel converter (MMC). Using fundamental switching selective harmonic elimination (SHE), the control angles are calculated from nonlinear equations by ...
  • Averaged model of modular multilevel converter in rotating DQ frame. 

    Sinha, Yashwant; Nampally, Ashok (IEEE https://doi.org/10.1109/ICRERA.2016.7884559, 2016-11-20)
    SINHA, Y. and NAMPALLY, A. 2016. Averaged model of modular multilevel converter in rotating DQ frame. In the Proceedings of the 5th IEEE international conference on renewable energy research and applications (ICRERA 2016), 20 - 23 November 2016, Birmingham, UK. New York: IEEE [online], pages 319-324. Available from: https://doi.org/10.1109/ICRERA.2016.7884559
    This paper proposes an average model of Modular Multilevel Converter (MMC) in rotating DQ frame. The proposed MMC model has a modular structure and can be linked with other power elements such as AC and DC subsystems. ...
  • Linearized DQ averaged model of modular multilevel converter. 

    Sinha, Yashwant; Nampally, Ashok (IEEE https://doi.org/10.1109/ICRERA.2016.7884458, 2016-11-20)
    SINHA, Y. and NAMPALLY, A. 2016. Linearized DQ averaged model of modular multilevel converter. In Proceedings of the 5th IEEE international conference on renewable energy research and applications (ICRERA 2016), 20 - 23 November 2016, Birmingham, UK. New York: IEEE [online], pages 861-866. Available from: https://doi.org/10.1109/ICRERA.2016.7884458
    This paper proposes a linearized model of Modular Multilevel Converter (MMC) in DQ frame. The proposed MMC model has a modularstructure and can be linked with other power elements such as AC and DC subsystems.The main ...

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