Now showing items 158-177 of 1783

  • Brown dwarfs and very low mass stars in the Hyades cluster : a dynamically evolved mass function 

    Bouvier, Jerome; Kendall, T.R.; Meeus, G.; Testi, L.; Moraux, E.; Stauffer, J.R.; James, D.; Cuillandre, J.C.; Irwin, J.; McCaughrean, M.J.; Baraffe, I.; Bertin, E. (EDP Sciences for European Southern Observatory (ESO), 2008)
    We conducted a search for brown dwarfs (BDs) and very low mass (VLM) stars in the 625 Myr-old Hyades cluster in order to derive the cluster's mass function across the stellar-substellar boundary. We performed a deep (I=23, ...
  • BSim: an agent-based tool for modeling bacterial populations in systems and synthetic biology. 

    Gorochowski, TE; Matyjaszkiewicz, Antoni; Todd, T; Oak, N; Kowalska, K; Reid, S; Tsaneva-Atanasova, Krasimira; Savery, NJ; Grierson, CS; di Bernardo, M (Public Library of Science (PLoS), 2012)
    Large-scale collective behaviors such as synchronization and coordination spontaneously arise in many bacterial populations. With systems biology attempting to understand these phenomena, and synthetic biology opening up ...
  • Buckling of scroll waves 

    Dierckx, H.; Verschelde, H.; Selsil, O.; Biktashev, V. N. (American Physical Society, 2012)
    A scroll wave in a sufficiently thin layer of an excitable medium with negative filament tension can be stable nevertheless due to filament rigidity. Above a certain critical thickness of the medium, such scroll wave will ...
  • The Build-up to Eruptive Solar Events Viewed as the Development of Chiral Systems 

    Martin, Sara F.; Panasenco, Olga; Berger, M.A.; Engvold, Oddbjorn; Lin, Yong; Pevtsov, Alexei A.; Srivastava, Nandita (Astronomical Society of the Pacific, 2012)
    When we examine the chirality or observed handedness of the chromospheric and coronal structures involved in the long-term build-up to eruptive events, we find that they evolve in very specific ways to form two and only ...
  • Building a better future: An exploration of beliefs about climate change and perceived need for adaptation within the building industry 

    Morton, Thomas A.; Bretschneider, Pamela; Coley, David; Kershaw, Tristan (Elsevier, 2011)
    The present research explored beliefs about climate change among an important yet relatively understudied population: representatives of the building industry. We also assessed the perceived adequacy of current climate-related ...
  • A Ca2+-based computational model for NMDA receptor-dependent synaptic plasticity at individual post-synaptic spines in the Hippocampus. 

    Rackham, OJ; Tsaneva-Atanasova, Krasimira; Ganesh, A; Mellor, JR (Frontiers, 2010)
    Associative synaptic plasticity is synapse specific and requires coincident activity in pre-synaptic and post-synaptic neurons to activate NMDA receptors (NMDARs). The resultant Ca(2+) influx is the critical trigger for ...
  • CADDIES: A New Framework for Rapid Development of Parallel Cellular Automata Algorithms for Flood Simulation 

    Guidolin, Michele; Duncan, Andrew; Ghimire, Bidur; Gibson, Mike; Keedwell, Edward; Chen, Albert S.; Djordjevic, Slobodan; Savic, Dragan (IWA (International Water Association), 2012-07-20)
    A recent trend in the development of flood simulation algorithms shows the move toward fast simplified models instead of slow full hydrodynamic models. CADDIES is a research project that aims to develop a real/near-real ...
  • CADDIES: a new framework for rapid development of parallel cellular automata algorithms for flood simulation 

    Guidolin, Michele; Duncan, Andrew; Ghimire, B; Gibson, M; Keedwell, Edward; Chen, Albert S.; Djordjevic, Slobodan; Savic, Dragan (2012)
    Cellular automata (CA) algorithms can be used for quickly describing models of complex systems using simple rules. CADDIES is a new EPSRC and industry-sponsored project that aims to use the computational speed of CA ...
  • Calcium-Induced Calcium Release during Action Potential Firing in Developing Inner Hair Cells 

    Iosub, Radu; Avitabile, Daniele; Grant, Lisa; Tsaneva-Atanasova, Krasimira; Kennedy, Helen J. (Biophysical Society / Elsevier, 2015)
    In the mature auditory system, inner hair cells (IHCs) convert sound-induced vibrations into electrical signals that are relayed to the central nervous system via auditory afferents. Before the cochlea can respond to normal ...
  • Can lasing at visible wavelengths be achieved using the low-loss long-range surface plasmon-polariton mode? 

    Winter, G.; Wedge, S.; Barnes, William L. (Institute of Physics and Deutsche Physikalische Gesellschaft, 2006)
    The use of emissive dye molecules as a gain medium in order to excite the low-loss long-range surface plasmon-polariton (SPP) mode on a thin silver film has previously been suggested as a method of achieving SPP lasing at ...
  • Canonical quantization of electromagnetism in spatially dispersive media 

    Horsley, S.A.R.; Philbin, Thomas G. (IOP Publishing, 2014)
    We find the action that describes the electromagnetic field in a spatially dispersive, homogeneous medium. This theory is quantized and the Hamiltonian is diagonalized in terms of a continuum of normal modes. It is found ...
  • Canonical quantization of macroscopic electromagnetism 

    Philbin, Thomas G. (Institute of Physics, 2010)
    Application of the standard canonical quantization rules of quantum field theory to macroscopic electromagnetism has encountered obstacles due to material dispersion and absorption. This has led to a phenomenological ...
  • Canonical quantization of the electromagnetic field interacting with a moving dielectric medium 

    Horsley, S.A.R. (American Physical Society, 2012)
    The electromagnetic field is canonically quantized in the presence of a linear, dispersive, and dissipative medium that is in uniform motion. Specifically we calculate the change in the normal modes of the coupled matter-field ...
  • The carbon cycle response to ENSO: a coupled climate–carbon cycle model study 

    Jones, Chris D.; Collins, Matthew; Cox, Peter M.; Spall, Steven A. (American Meteorological Society, 2001)
    There is significant interannual variability in the atmospheric concentration of carbon dioxide (CO2) even when the effect of anthropogenic sources has been accounted for. This variability is well correlated with the El ...
  • Carbon fibres with ordered graphitic-like aggregate structures from a regenerated cellulose fibre precursor 

    Lewandowska, Anna E.; Soutis, C.; Savage, Luke; Eichhorn, Stephen J. (Elsevier, 2015-05-16)
    Abstract The production and characterisation of low modulus carbon fibres is reported from a commercially available regenerated cellulose fibre (CordenkaTM). The fibres were heat treated before the graphitisation at a ...
  • Cardinality constrained portfolio optimisation 

    Fieldsend, Jonathan E.; Matatko, John; Peng, Ming (Springer Berlin Heidelberg, 2004)
    The traditional quadratic programming approach to portfolio optimisation is difficult to implement when there are cardinality constraints. Recent approaches to resolving this have used heuristic algorithms to search for ...
  • Carrier dynamics in semiconductors studied with time-resolved terahertz spectroscopy 

    Ulbricht, Ronald; Hendry, Euan; Shan, Jie; Heinz, Tony F.; Bonn, Mischa (American Physical Society, 2011)
    Time-resolved, pulsed terahertz spectroscopy has developed into a powerful tool to study charge carrier dynamics in semiconductors and semiconductor structures over the past decades. Covering the energy range from a few ...
  • Cascaded Optical Field Enhancement in Composite Plasmonic Nanostructures 

    Kravets, V.G.; Zoriniants, George; Burrows, Christopher P.; Schedin, F.; Casiraghi, C.; Klar, P.; Geim, A.K.; Barnes, William L.; Grigorenko, A.N. (American Physical Society, 2010)
    We present composite plasmonic nanostructures designed to achieve cascaded enhancement of electromagnetic fields at optical frequencies. Our structures were made with the help of electron-beam lithography and comprise a ...
  • A case study of the radiative forcing of persistent contrails evolving into contrail-induced cirrus 

    Haywood, James M.; Allan, Richard P.; Bornemann, Jorge; Forster, Piers M.; Francis, Peter N.; Milton, Sean; Radel, Gaby; Rap, Alexandru; Shine, Keith P.; Thorpe, Robert (American Geophysical Union (AGU), 2009)
    [1] The radiative forcing due to a distinct pattern of persistent contrails that form into contrail-induced cirrus near and over the UK is investigated in detail for a single case study during March 2009. The development ...
  • Casimir effect from macroscopic quantum electrodynamics 

    Philbin, Thomas G. (Institute of Physics, 2011)
    The canonical quantization of macroscopic electromagnetism was recently presented in New J. Phys. 12 (2010) 123008. This theory is here used to derive the Casimir effect, by considering the special case of thermal and ...