Now showing items 34-53 of 729

  • Are turbulent spheres suitable initial conditions for star-forming clouds? 

    Rey-Raposo, Ramon; Dobbs, Clare; Duarte-Cabral, A. (Oxford University Press for Royal Astronomical Society, 2014)
    To date, most numerical simulations of molecular clouds, and star formation within them, assume a uniform density sphere or box with an imposed turbulent velocity field. In this work, we select molecular clouds from galactic ...
  • Assessing the risk of climate change for buildings: A comparison between multi-year and probabilistic reference year simulations 

    Kershaw, Tristan; Eames, Matthew E.; Coley, David (Elsevier, 2011)
    Given a changing climate, there is a need to provide data for future years so that practicing engineers can investigate the impact of climate change on particular designs and examine any risk the client might be exposed ...
  • Asymmetric dot dimers – optical properties and interactions 

    Meinzer, Nina; Humphrey, Alastair D.; Barnes, William L. (2015-01-06)
    We present a study of the rich optical behaviour of the dark (grey) modes exhibited by asymmetric dot dimers and how this behaviour is modified upon interaction between dimers.
  • The atmospheric circulation of a nine-hot Jupiter sample: probing circulation and chemistry over a wide phase space 

    Kataria, T; Sing, David K.; Lewis, N; Visscher, C; Showman, A.P.; Fortney, J.J.; Marley, M (American Astronomical Society, 2016)
    We present results from an atmospheric circulation study of nine hot Jupiters that comprise a large transmission spectral survey using the Hubble and Spitzer Space Telescopes. These observations exhibit a range of spectral ...
  • Atmospheric escape from HD 189733b observed in H i Lyman-α: Detailed analysis of HST/STIS September 2011 observations 

    Bourrier, V.; Lecavelier des Etangs, A.; Dupuy, H.; Ehrenreich, D.; Vidal-Madjar, A.; Hebrard, G.; Ballester, G.; Desert, J.-M.; Ferlet, R.; Sing, David K.; Wheatley, P.J. (EDP Sciences for European Southern Observatory (ESO), 2013)
    Observations of transits of the hot giant exoplanet HD 189733b in the unresolved H i Lyman-α line show signs of hydrogen escaping the upper atmosphere of the planet. New resolved Lyman-α observations obtained with the STIS ...
  • Axial speed of sound for the monitoring of injured equine tendons: a preliminary study. 

    Vergari, C; Pourcelot, P; Ravary-Plumioën, B; Dupays, AG; Jacquet, S; Audigié, F; Denoix, JM; Laugier, P; Mitton, D; Crevier-Denoix, N (Elsevier, 2011-10-22)
    Equine superficial digital flexor tendons (SDFT) are often injured, and they represent an excellent model for human sport tendinopathies. While lesions can be precisely diagnosed by clinical evaluation and ultrasonography, ...
  • Axial speed of sound is related to tendon's nonlinear elasticity. 

    Vergari, C; Ravary-Plumioën, B; Evrard, D; Laugier, P; Mitton, D; Pourcelot, P; Crevier-Denoix, N (Elsevier, 2011-11-10)
    Axial speed of sound (SOS) measurements have been successfully applied to noninvasively evaluate tendon load, while preliminary studies showed that this technique also has a potential clinical interest in the follow up of ...
  • Babinet’s principle and the band structure of surface waves on patterned metal arrays 

    Edmunds, James D.; Taylor, Melita C.; Hibbins, Alastair P.; Sambles, J. Roy; Youngs, I.J. (American Institute of Physics, 2010)
    The microwave response of an array of square metal patches and its complementary structure, an array of square holes, has been experimentally studied. The resonant phenomena, which yield either enhanced transmission or ...
  • Backflow in the relaxation of a hybrid aligned nematic cell 

    Jewell, Sharon A.; Sambles, J. Roy (American Institute of Physics, 2003)
    The optical convergent-beam technique has been used to measure the changing director profile in a 4.6 µm ZLI-2293 filled hybrid aligned nematic cell when a 7 Vrms ac voltage was removed. The relaxation process has been ...
  • Bayesian detection of planetary transits. A modified version of the Gregory-Loredo method for Bayesian periodic signal detection 

    Aigrain, Suzanne; Favata, F. (EDP Sciences, 2002)
    The detection of planetary transits in stellar photometric light-curves is poised to become the main method for finding substantial numbers of terrestrial planets. The French-European mission COROT (foreseen for launch in ...
  • Bioavailability of nanoscale metal oxides TiO(2), CeO(2), and ZnO to fish 

    Johnston, B.D.; Scown, Tessa M.; Moger, Julian; Cumberland, Susan A.; Baalousha, Mohamed; Linge, Kathryn; van Aerle, Ronny; Jarvis, Kym; Lead, Jamie R.; Tyler, Charles R. (American Chemical Society, 2010-02-01)
    Nanoparticles (NPs) are reported to be a potential environmental health hazard. For organisms living in the aquatic environment, there is uncertainty on exposure because of a lack of understanding and data regarding the ...
  • Biomechanics of fibrous proteins of the extracellular matrix studied by Brillouin scattering 

    Palombo, F; Winlove, CP; Edginton, RS; Green, E; Stone, N; Caponi, S; Madami, M; Fioretto, D (Royal Society, 2014-10-08)
    Brillouin light scattering (BLS) spectroscopy is a technique that is able to detect thermally excited phonons within a material. The speed of propagation of these phonons can be determined from the magnitude of the Brillouin ...
  • Black Hole Lasers Revisited 

    Leonhardt, Ulf; Philbin, Thomas G. (Springer, 2007)
    The production of Hawking radiation by a single horizon is not dependent on the high-frequency dispersion relation of the radiated field. When there are two horizons, however, Corley and Jacobson have shown that superluminal ...
  • Blue, surface-emitting, distributed feedback polyfluorene lasers 

    Heliotis, G.; Xia, R.; Bradley, D. D. C.; Turnbull, G. A.; Samuel, I. D. W.; Andrew, P.; Barnes, William L. (American Institute of Physics, 2003)
    We report the fabrication of optically-pumped solid-state distributed feedback lasers utilizing two blue-light-emitting semiconducting polyfluorenes as gain media. The lasers were readily fabricated by solution deposition ...
  • Boundary-layer effects on acoustic transmission through narrow slit cavities 

    Ward, GP; Lovelock, RK; Murray, AR; Hibbins, Alastair P.; Sambles, J. Roy; Smith, JD (American Physical Society, 2015-07-21)
    We explore the slit-width dependence of the resonant transmission of sound in air through both a slit array formed of aluminum slats and a single open-ended slit cavity in an aluminum plate. Our experimental results accord ...
  • Brillouin spectroscopy applied to protein fibers of the extracellular matrix 

    Edginton, RS; Mattana, S; Caponi, S; Fioretto, D; Green, E; Winlove, CP; Palombo, F (Journal of Visualized Experiments (JoVE), 2016)
    Brillouin spectroscopy is an emerging technique in the biomedical field. It probes the mechanical properties of a sample through the interaction of visible light with thermally induced acoustic waves or phonons propagating ...
  • Broad-band polarization conversion from a finite periodic structure in the microwave regime 

    Hallam, B. T.; Lawrence, Christopher R.; Hooper, Ian R.; Sambles, J. Roy (American Institute of Physics, 2004)
    A reflection grating demonstrating extraordinarily broad-band polarization conversion in a nondiffractive regime has been studied at microwave frequencies. This single-element structure has been fabricated by electrolessly ...
  • Broadband and broadangle extraordinary acoustic transmission through subwavelength apertures surrounded by fluids 

    Carretero-Palacios, S.; Murray, Alasdair R.J.; Martín-Moreno, L.; Hibbins, Alastair P. (IOP Publishing for Deutsche Physikalische Gesellschaft, 2014)
    We present a mechanism for ultra-broadband transmission of acoustic waves through subwavelength hole arrays. Different fluids surrounding (or filling) the holes are considered, which allows tuning of the band of maximum ...
  • Broadband and low loss high refractive index metamaterials in the microwave regime 

    Campbell, T.; Hibbins, Alastair P.; Sambles, J. Roy; Hooper, Ian R. (American Institute of Physics, 2013)
    A broadband, low-loss, isotropic, high refractive index metamaterial comprising an array of close-packed cubic elements of cross-linked square metal plates is demonstrated in the microwave regime. The structuring of the ...
  • Broadband impedance-matched electromagnetic structured ferrite composite in the megahertz range 

    Parke, L.; Youngs, I.J.; Hibbins, Alastair P.; Sambles, J. Roy (American Institute of Physics (AIP), 2014)
    A high refractive-index structured ferrite composite is designed to experimentally demonstrate broadband impedance matching to free-space. It consists of an array of ferrite cubes that are anisotropically spaced, thereby ...