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  • N-Tox® - Early warning of nitrification toxicity for activated sludge treatment 
    Callister, S.; Stephenson, Tom; Butler, M. D.; Cartmell, Elise (2006-09-01)
    N-Tox® is a new technique for evaluating the nitrification efficiency in industrial or municipal activated sludge systems, using direct measurement of nitrous oxide (N20) as an indicator of nitrification failure. Research ...
  • Nacelle design for ultra-high bypass ratio engines with CFD based optimisation 
    Robinson, Matthew; MacManus, David G.; Christie, Robert; Sheaf, Christopher T.; Grech, Nicholas (Elsevier, 2020-09-09)
    As the size of aero-engines has increased in recent years, the need for slimmer and shorter nacelles has become more pressing. A more aggressive design space must therefore be explored for nacelle designs which are expected ...
  • Nacelle intake flow separation reduction at cruise conditions using active flow control 
    Nambiar, Vinayak Ramachandran; Pachidis, Vassilios (Elsevier, 2022-10-17)
    Turbofan engine intakes are designed to provide separation-free flow at the fan face over a wide range of operating conditions. But at some off-design conditions, like at high flight speeds and high angles of attack (AoA), ...
  • Nano and Micro indentation studies of bulk zirconia and EB PVD TBCs 
    Wellman, R. G.; Dyer, A.; Nicholls, John R. (Elsevier Science B.V., Amsterdam., 2004-01-01)
    In order to model the erosion of a material it is necessary to know the material properties of both the impacting particles as well as the target. In the case of electron beam (EB) physical vapour deposited(PVD) thermal ...
  • Nano and microhardness testing of aged EB PVD TBCs 
    Wellman, R. G.; Tourmente, H.; Impey, Susan A.; Nicholls, John R. (Elsevier Science B.V., Amsterdam., 2004-11-01)
    Previous studies on the erosion of electron beam physical vapour deposited thermal barrier coatings (EB PVD TBCs) has shown that aging the coatings at between 1100 and 1500 à °C before erosion increases the erosion rate. ...
  • The nano membrane toilet: separation processes. 
    Mercer, Edwina Vivien (Cranfield UniversitySWEE, 2019-03)
    It is estimated that 61 % and 29 % of the global population lack safely managed sanitation and clean water services respectively. The water Sustainable Development Goals (SDG 6) actioned by the UN, aim to provide global ...
  • Nano- and micro-scale impact testing of zirconia, alumina and zirconia-alumina duplex optical coatings on glass 
    Beake, Ben D.; Isern, Luis; Bhattacharyya, Debabrata; Endrino, José L.; Lawson, Ken; Walker, Trevor (Elsevier, 2020-10-06)
    Optimising the mechanical properties of optical coatings to improve their durability will be critical if they are to be used successfully in harsh environments where they may be subject to degradation by mechanical contact. ...
  • Nano-assembled thin film gas sensors. 1. Ammonia detection by a porphyrin-based multilayer film. 
    Korposh, Serhiy O.; Takahara, Naoki; Ramsden, Jeremy J.; Lee, Seung-Woo; Kunitake, Toyoki (Association of Modern Scientific Investigation, 2006-09)
    A thin film of porphyrin deposited by the layer-by-layer method is employed as the active element for an optical sensor. The usefulness of this film technology and the resulting nanoscale matrix for the detection of ...
  • Nano-level surface generation on H13 alloy steel by ultra-precision grinding with electrolytic in-process dressing 
    Javaid, N.; Stephenson, David J.; Vitanov, V. I. (2010-09-16)
    The aim of this work was to achieve the surface finish of 10nm on a 40mm diameter disc of chrome-molybdenum-vanadium alloyed steel (H13) by using precision grinding process with electrolytic in-process dressing. The ...
  • Nano-Porous Light-Emitting Silicon Chip as a Potential Biosensor Platform 
    Zhang, Juankun; Zhang, Weiliang; Dong, Shanmu; Turner, Anthony P. F.; Fan, Qingjie; Jia, Shiru (Taylor and Francis, 2008-01)
    Nano-porous silicon (PS) offers a potential platform for biosensors with benefits both in terms of light emission and the large functional surface area. A light emitting PS chip with a stable and functional surface was ...
  • Nano-sized particles emission during drilling and low velocity impact of silica-based thermoplastic nanocomposites 
    Sachse, Sophia (Cranfield University, 2012-10)
    During the past decade, polymer nanocomposites have emerged as a novel and rapidly developing class of materials and attracted considerable investment in research and development worldwide. Driven by the certainty that ...
  • Nanobubble aeration enhanced wastewater treatment and bioenergy generation in constructed wetlands coupled with microbial fuel cells 
    Lyu, Tao; Wu, Yuncheng; Zhang, Yang; Fan, Wei; Wu, Shubiao; Mortimer, Robert J. G.; Pan, Gang (Elsevier, 2023-06-29)
    Artificial aeration is a widely used approach in wastewater treatment to enhance the removal of pollutants, however, traditional aeration techniques have been challenging due to the low oxygen transfer rate (OTR). Nanobubble ...
  • Nanobubble technology enhanced ozonation process for ammonia removal 
    Wu, Yuncheng; Tian, Wei; Zhang, Yang; Fan, Wei; Liu, Fang; Zhao, Jiayin; Wang, Mengmeng; Liu, Yu; Lyu, Tao (MDPI, 2022-06-10)
    Ozone (O3) has been widely used for water and wastewater treatment due to its strong oxidation ability, however, the utilization efficiency of O3 is constrained by its low solubility and short half-life during the treatment ...
  • Nanoclay-based pigments: synthesis, characterization and application 
    Marchante Rodriguez, Veronica; Marcilla Gomis, Antonio; Beltran Rico, M. I. (Bayaya Publisher Ltd., 2013-10-01)
    Nanoclay-based pigments are promising colorants. They enhance the colorimetric properties of the dye giving more intense and saturated colours. In addition, they act as reinforce additive when they are dispersed into ...
  • Nanocoatings on micro- or nano-particles 
    Libor, Zsuzsanna; Zhang, Qi; Israel, C.; Mathur, N. D. (Maney Publishing, 2009-11)
    In recent years, coating processes with nanoparticles have been investigated for the development of nanostructured materials. In this work we report the core-shell structures of micro-composites of SiO2/Ni, SiO2/Fe3O4, and ...
  • Nanocomposites for vehicle structural applications 
    Njuguna, James A. K.; Silva, Francesco; Sachse, Sophia (2011-11-14)
    Advancements in the nanotechnology industry promise to offer improvements in capabilities across a spectrum of applications. This is of immense strategic importance to the high performance sector which has historically ...
  • Nanofiller Fibre-Reinforced Polymer Nanocomposites 
    Njuguna, James A. K.; Pielichowski, Krzysztof; Desai, S. (John Wiley & Sons, Ltd, 2008-06-09)
    In this work, the technology of nano and micro-scale particle reinforcement concerning various polymeric fibre-reinforced systems including polyamides (PA), polyesters, polyurethanes, polypropylenes and high performanc ...
  • Nanoflow over a fractal surface 
    Papanikolaou, Michail; Frank, Michael; Drikakis, Dimitris (American Institute of Physics (AIP), 2016-08-01)
    This paper investigates the effects of surface roughness on nanoflows using molecular dynamics simulations. A fractal model is employed to model wall roughness, and simulations are performed for liquid argon confined by ...
  • Nanofunctionalised orthopaedic implants 
    Mirza, Farhan A. (2018-01)
    Due to an aging population and younger patients presenting with musculoskeletal disorders, there is a need for orthopaedic implants with improved healing rates and longer implant life. Numerous research has developed implant ...
  • Nanoindentation of polysilicon and single crystal silicon: Molecular dynamics simulation and experimental validation 
    Goel, Saurav; Faisal, Nadimul Haque; Luo, Xichun; Yan, Jiwang; Agrawal, Anupam (IOP Publishing, 2014-06-06)
    This paper presents novel advances in the deformation behaviour of polycrystalline and single crystal silicon using molecular dynamics (MD) simulation and validation of the same via nanoindentation experiments. In order ...