All Outputs (46)

On the use of dimensioning equations for surface permanent magnet machines (2012)
Presentation / Conference Contribution
Branz, L., Degano, M., De Martin, M., & Tessarolo, A. (2012, June). On the use of dimensioning equations for surface permanent magnet machines. Presented at SPEEDAM 2012 - 21st International Symposium on Power Electronics, Electrical Drives, Automation and Motion, Sorrento, Italy

Surface permanent magnet (SPM) machines are widely used in a vast variety of industrial, domestic and vehicular applications. In the engineering practice, it is useful to adopt dimensioning equations to quickly predict their size, weight and producti... Read More about On the use of dimensioning equations for surface permanent magnet machines.

Determination of crystallographic orientation of large grain metals with surface acoustic waves (2012)
Journal Article
Li, W., Sharples, S. D., Smith, R. J., Clark, M., & Somekh, M. G. (2012). Determination of crystallographic orientation of large grain metals with surface acoustic waves. Journal of the Acoustical Society of America, 132(2), 738-745. https://doi.org/10.1121/1.4731226

A previously described laser ultrasonic technique known as spatially resolved acoustic spectroscopy (SRAS) can be used to image surface microstructure, using the local surface acoustic wave (SAW) velocity as a contrast mechanism. It is shown here tha... Read More about Determination of crystallographic orientation of large grain metals with surface acoustic waves.

Ultrastable heterodyne interferometer system using a CMOS modulated light camera (2012)
Journal Article
Patel, R., Achamfuo-Yeboah, S., Light, R., & Clark, M. (2012). Ultrastable heterodyne interferometer system using a CMOS modulated light camera. Optics Express, 20(16), https://doi.org/10.1364/OE.20.017722

A novel ultrastable widefield interferometer is presented. This uses a modulated light camera (MLC) to capture and stabilise the interferogram in the widefield heterodyne interferometer. This system eliminates the contribution of piston phase to the... Read More about Ultrastable heterodyne interferometer system using a CMOS modulated light camera.

Performance comparison of CO2 conversion in slurry and monolith photoreactors using Pd and Rh-TiO2 catalyst under ultraviolet irradiation (2012)
Journal Article
Ola, O., Maroto-Valer, M., Liu, D., Mackintosh, S., Lee, C.-W., & Wu, J. C. (2012). Performance comparison of CO2 conversion in slurry and monolith photoreactors using Pd and Rh-TiO2 catalyst under ultraviolet irradiation. Applied Catalysis B: Environmental, 126, 172-179. https://doi.org/10.1016/j.apcatb.2012.07.024

Anthropogenic activities are causing an increase in greenhouse gases in the atmosphere, with carbon dioxide (CO2) being the key cause of global warming. The conversion of CO2 into valuable hydrocarbons serves as a promising route for mitigating the e... Read More about Performance comparison of CO2 conversion in slurry and monolith photoreactors using Pd and Rh-TiO2 catalyst under ultraviolet irradiation.

CFD modelling of an entire synchronous generator for improved thermal management (2012)
Presentation / Conference Contribution
Connor, P. H., Pickering, S. J., Gerada, C., Eastwick, C. N., & Micallef, C. (2012, March). CFD modelling of an entire synchronous generator for improved thermal management. Presented at 6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012), Bristol, UK

This paper is the first in a series dedicated to investigating the airflow and thermal management of electrical machines. Due to the temperature dependent resistive losses in the machine's windings any improvement in cooling provides a direct reducti... Read More about CFD modelling of an entire synchronous generator for improved thermal management.

Evaluation of a digitally controlled power electronic emulator for supercapattery (2012)
Presentation / Conference Contribution
Kulsangcharoen, P., Rashed, M., Klumpner, C., De, D., Patel, C., Asher, G., & Chen, G. Z. (2012, March). Evaluation of a digitally controlled power electronic emulator for supercapattery. Presented at 6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012), Bristol, UK

Newly developed electrochemical energy storage devices are typically produced as single/small quantity and small size devices. This makes their evaluation very difficult in high power applications that would require production of much larger size dev... Read More about Evaluation of a digitally controlled power electronic emulator for supercapattery.

Produced water treatment technologies (2012)
Journal Article
Igunnu, E. T., & Chen, G. Z. (2014). Produced water treatment technologies. International Journal of Low-Carbon Technologies, 9(3), 157-177. https://doi.org/10.1093/ijlct/cts049

Produced water is a complex mixture of organic and inorganic compounds and the largest volume of by-product generated during oil and gas recovery operations. The potential of oilfield produced water to be a source of fresh water for water-stressed oi... Read More about Produced water treatment technologies.

Synchronization of tool tip and tool orientation contour errors in five-axis machining (2012)
Presentation / Conference Contribution
A. El Khalick, M., Uchiyama, N., & Sano, S. (2012, June). Synchronization of tool tip and tool orientation contour errors in five-axis machining. Presented at 2012 American Control Conference (ACC), Montreal, Canada

In current CNC machines, each axis is generally controlled by an individual controller, which tries to minimize the axial position tracking error. However, eliminating the tracking errors of each individual axis in multi-axis feed drive systems may n... Read More about Synchronization of tool tip and tool orientation contour errors in five-axis machining.

Deflection and frequency monitoring of the Forth Road Bridge, Scotland, by GPS (2012)
Journal Article
Roberts, G. W., Brown, C. J., Meng, X., Ogundipe, O., Atkins, C., & Colford, B. (2012). Deflection and frequency monitoring of the Forth Road Bridge, Scotland, by GPS. Proceedings of the ICE - Bridge Engineering, 165(2), https://doi.org/10.1680/bren.9.00022

The use of carrier phase kinematic GPS (global positioning system) has evolved into a reliable technique to measure both the three-dimensional magnitudes and frequencies of movements of structures. Techniques have been developed that tackle errors ca... Read More about Deflection and frequency monitoring of the Forth Road Bridge, Scotland, by GPS.

Review: Sketches of Frank Gehry: Markus Heidingsfelder and Min Tesch, directors. Rem Koolhaas: A Kind of Architect. Arthouse Films, New York, 2010, DVD, 97 mins., $19.95, http://www.arthousefilms online.com (2012)
Journal Article
Kauffman, J. (2012). Review: Sketches of Frank Gehry: Markus Heidingsfelder and Min Tesch, directors. Rem Koolhaas: A Kind of Architect. Arthouse Films, New York, 2010, DVD, 97 mins., $19.95, http://www.arthousefilms online.com. Journal of the Society of Architectural Historians, 71(2), 245-246. https://doi.org/10.1525/jsah.2012.71.2.242

During the past decade, it became clear that the postmodern belief in the death of the author as a narrative construct was greatly exaggerated. As architects realized the marketing value of the authorial persona—labeled the “starchitect” by the media... Read More about Review: Sketches of Frank Gehry: Markus Heidingsfelder and Min Tesch, directors. Rem Koolhaas: A Kind of Architect. Arthouse Films, New York, 2010, DVD, 97 mins., $19.95, http://www.arthousefilms online.com.

Evidence of past environmental conditions during the evolution of a calcretised Wadi System in Southern Jordan using stable isotopes (2012)
Journal Article
McLaren, S. J., Leng, M. J., Knowles, T., & Bradley, A. V. (2012). Evidence of past environmental conditions during the evolution of a calcretised Wadi System in Southern Jordan using stable isotopes. Palaeogeography, Palaeoclimatology, Palaeoecology, 348-349, 1-12. https://doi.org/10.1016/j.palaeo.2012.05.010

A stratigraphically and temporally ordered sequence of channel calcretes preserved along the Wadi Dana, Southern Jordan, records the Quaternary evolution of the formation and infilling of rock-cut channels and their subsequent incision in a tectonica... Read More about Evidence of past environmental conditions during the evolution of a calcretised Wadi System in Southern Jordan using stable isotopes.

Urban evolution of the city of Doha: An investigation into the impact of economic transformations on urban structures (2012)
Journal Article
Wiedmann, F., Salama, A. M., & Thierstein, A. (2012). Urban evolution of the city of Doha: An investigation into the impact of economic transformations on urban structures. Metu Journal of the Faculty of Architecture, 29(2), 35-61. https://doi.org/10.4305/METU.JFA.2012.2.2

During the second half of the 20th century Qatar has witnessed its first urbanisation period, which was linked to the rapidly increasing oil production. Today, new development strategies, which have been implemented to diversify its economy, have led... Read More about Urban evolution of the city of Doha: An investigation into the impact of economic transformations on urban structures.

Selective harmonic mitigation technique for cascaded H-bridge converters with nonequal DC link voltages (2012)
Journal Article
Napoles, J., Watson, A. J., Padilla, J. J., Leon, J. I., Franquelo, L. G., Wheeler, P. W., & Aguirre, M. A. (2013). Selective harmonic mitigation technique for cascaded H-bridge converters with nonequal DC link voltages. IEEE Transactions on Industrial Electronics, 60(5), 1963-1971. https://doi.org/10.1109/TIE.2012.2192896

Multilevel converters have received increased interest recently as a result of their ability to generate high quality output waveforms with a low switching frequency. This makes them very attractive for high-power applications. A cascaded H-bridge co... Read More about Selective harmonic mitigation technique for cascaded H-bridge converters with nonequal DC link voltages.

Performance of an integrated solar absorption cooling system in a sub-tropical region (2012)
Journal Article
Darkwa, J., & Fraser, S. (2012). Performance of an integrated solar absorption cooling system in a sub-tropical region. International Journal of Low-Carbon Technologies, 7(3), https://doi.org/10.1093/ijlct/cts024

Evaluation of an integrated solar absorption cooling system located in a sub-tropical region has been carried out. Analysis of the results revealed an operational efficiency of 61% for the solar collectors at a mean differential temperature forumla o... Read More about Performance of an integrated solar absorption cooling system in a sub-tropical region.

Retrofit Yield Spectra–a practical device in seismic rehabilitation (2012)
Journal Article
Thermou, G., Elnashai, A., & Pantazopoulou, S. (2012). Retrofit Yield Spectra–a practical device in seismic rehabilitation. Earthquakes and Structures, 3(2), 141-168. https://doi.org/10.12989/eas.2012.3.2.141

The Retrofit Yield Spectrum (RYS) is a new spectrum-based device that relates seismic demand of a retrofitted structure with the fundamental design parameters of the retrofit. This is obtained from superposition of Yield Point Spectra with design cha... Read More about Retrofit Yield Spectra–a practical device in seismic rehabilitation.

On the impact of Cu dispersion on CO2 photoreduction over Cu/TiO2 (2012)
Journal Article
Fernández, Y., Liu, D., Mackintosh, S., Ola, O., Maroto-Valer, M., Parlett, C. M., Lee, A. F., & Wu, J. C. (2012). On the impact of Cu dispersion on CO2 photoreduction over Cu/TiO2. Catalysis Communications, 25, 78-82. https://doi.org/10.1016/j.catcom.2012.03.025

A family of Cu/TiO2 catalysts was prepared using a refined sol–gel method, and tested in the photocatalytic reduction of CO2 by H2O to CH4 using a stirred batch, annular reactor. The resulting photoactivity was benchmarked against pure TiO2 nanoparti... Read More about On the impact of Cu dispersion on CO2 photoreduction over Cu/TiO2.

The grooved-dielectric Fresnel zone plate: An effective terahertz lens and antenna (2012)
Journal Article
Hristov, H., Rodriguez, J., & Grote, W. (2012). The grooved-dielectric Fresnel zone plate: An effective terahertz lens and antenna. Microwave and Optical Technology Letters, 54(6), 1343-1348. https://doi.org/10.1002/mop.26812

A number of microwave and terahertz grooved-dielectric Fresnel zone plate (FZP) and ordinary lenses and antennas are studed and compared numerically. Although the microwave (38 GHz) eight-step FZP lens is certainly inferior, the corresponding teraher... Read More about The grooved-dielectric Fresnel zone plate: An effective terahertz lens and antenna.

Confocal surface plasmon microscopy with pupil function engineering (2012)
Journal Article
Zhang, B., Pechprasarn, S., Zhang, J., & Somekh, M. G. (2012). Confocal surface plasmon microscopy with pupil function engineering. Optics Express, 20(7), https://doi.org/10.1364/OE.20.007388

Surface Plasmon microscopy can measure local changes of refractive index on the micron scale. Interferometric plasmon imaging delivers quantitative high spatial resolution sensitive to refractive index. In addition the so called V(z) method allows im... Read More about Confocal surface plasmon microscopy with pupil function engineering.

Polyamide 66 microspheres metallised with in situ synthesised gold nanoparticles for a catalytic application (2012)
Journal Article
Cheval, N., Gindy, N., Flowkes, C., & Fahmi, A. (2012). Polyamide 66 microspheres metallised with in situ synthesised gold nanoparticles for a catalytic application. Nanoscale Research Letters, 7(1), https://doi.org/10.1186/1556-276X-7-182

A simple concept is proposed to metallise polyamide 66 (PA66) spherulite structures with in situ synthesised gold nanoparticles (Au NPs) using a wet chemical method. This cost-effective approach, applied to produce a PA66/Au NP hybrid material, offer... Read More about Polyamide 66 microspheres metallised with in situ synthesised gold nanoparticles for a catalytic application.

Initial mechanical properties of phosphate-glass fibre-reinforced rods for use as resorbable intramedullary nails (2012)
Journal Article
Felfel, R. M., Ahmed, I., Parsons, A. J., Harper, L. T., & Rudd, C. D. (2012). Initial mechanical properties of phosphate-glass fibre-reinforced rods for use as resorbable intramedullary nails. Journal of Materials Science, 47(12), 4884-4894. https://doi.org/10.1007/s10853-012-6355-9

This paper investigates the use of novel phosphate- glass fibre-reinforced rods as resorbable intramedullary nails. Random and unidirectional fibres were moulded into composite rods by forging at ∼100 °C. Rods produced using non-woven random mats (RM... Read More about Initial mechanical properties of phosphate-glass fibre-reinforced rods for use as resorbable intramedullary nails.