Now showing items 330-349 of 1361

  • Effect of a Jurassic Oceanic Anoxic Event on belemnite ecology and evolution. 

    Ullmann, CV; Thibault, N; Ruhl, M; Hesselbo, Stephen P.; Korte, C (PNAS, 2014-07-15)
    The Toarcian oceanic anoxic event (T-OAE; ∼ 183 million y ago) is possibly the most extreme episode of widespread ocean oxygen deficiency in the Phanerozoic, coinciding with rapid atmospheric pCO2 increase and significant ...
  • The effect of axial load on the sagittal plane curvature of the upright human spine in vivo 

    Meakin, Judith R.; Smith, Francis W.; Gilbert, Fiona J.; Aspden, Richard M. (Elsevier, 2008)
    Determining the effect of load carriage on the human spine in vivo is important for determining spinal forces and establishing potential mechanisms of back injury. Previous studies have suggested that the natural curvature ...
  • The effect of episodic accretion on the phase transition of CO and CO2 in low-mass star formation 

    Vorobyov, Eduard I.; Baraffe, I.; Harries, Tim J.; Chabrier, G. (EDP Sciences for European Southern Observatory (ESO), 2013)
    We study the evaporation and condensation of CO and CO_2 during the embedded stages of low-mass star formation by using numerical simulations. We focus on the effect of luminosity bursts, similar in magnitude to FUors and ...
  • Effect of episodic accretion on the structure and the lithium depletion of low-mass stars and planet-hosting stars 

    Baraffe, I.; Chabrier, G. (EDP Sciences, 2010)
    Following up our recent analysis devoted to the impact of non steady accretion on the location of young low-mass stars or brown dwarfs in the Herzsprung-Russell diagram, we perform a detailed analysis devoted to the effect ...
  • Effect of heterogeneity on the elastic properties of auxetic materials 

    Gaspar, N.; Smith, Christopher W.; Evans, Kenneth E. (American Institute of Physics, 2003)
    Auxetic materials are gaining practical interest for their unusual and sometimes extreme mechanical response. The process of modeling these materials so far has highlighted a number of microstructural properties that are ...
  • Effect of hydroperoxides on red blood cell membrane mechanical properties 

    Hale, John P.; Winlove, C. Peter; Petrov, Peter G. (Biophysical Society, 2011)
    We investigate the effect of oxidative stress on red blood cell membrane mechanical properties in vitro using detailed analysis of the membrane thermal fluctuation spectrum. Two different oxidants, the cytosol-soluble ...
  • The effect of magnetic fields on star cluster formation 

    Price, Daniel J.; Bate, Matthew R. (Oxford University Press / Royal Astronomical Society, 2008)
    We examine the effect of magnetic fields on star cluster formation by performing simulations following the self-gravitating collapse of a turbulent molecular cloud to form stars in ideal magnetohydrodynamics. The collapse ...
  • The Effect of Magnetic Topology on Thermally-Driven Wind: Towards a General Formulation of the Braking Law 

    Reville, Victor; Brun, Allan Sacha; Matt, Sean P.; Strugarek, Antoine; Pinto, Rui F. (American Astronomical Society, 2015)
    Stellar wind is thought to be the main process responsible for the spin down of main-sequence stars. The extraction of angular momentum by a magnetized wind has been studied for decades, leading to several formulations for ...
  • Effect of solar radiation on suspension bridge performance 

    Westgate, Robert; Koo, Ki-Young; Brownjohn, James (American Society of Civil Engineers (ASCE), 2015)
    Observations of a U.K. suspension bridge show that thermal expansion and contraction cycles do not follow simple linear relationships with a single temperature value and that time lag and temperature distribution can be ...
  • The effect of thermal anisotropies during crystallization in phase-change recording media 

    Belmont, M. R.; Aziz, Mustafa M.; Wright, C. David (American Institute of Physics, 2008)
    The problem discussed is the significance of anisotropies in the thermal parameters of different phases of phase-change materials as used for data storage purposes during recording. The particular phase change in interest ...
  • Effective diffusion of scalar fields in a chaotic flow 

    Turner, M. R.; Gilbert, Andrew D.; Thuburn, John (American Institute of Physics, 2008)
    The advection of a tracer field in a fluid flow can create complex scalar structures and increase the effect of weak diffusion by orders of magnitude. One tool to quantify this is to measure the flux of scalar across contour ...
  • Effects of frozen soil on soil temperature, spring infiltration, and runoff: results from the PILPS 2(d) experiment at Valdai, Russia 

    Luo, Lifeng; Robock, Alan; Vinnikov, Konstantin Y.; Schlosser, C. Adam; Slater, Andrew G.; Boone, Aaron; Braden, Harald; Cox, Peter M.; De Rosnay, Patricia; Dickinson, Robert E.; Dai, Yongjiu; Duan, Qingyun; Etchevers, Pierre; Henderson-Sellers, Ann; Gedney, Nicola; Gusev, Yevgeniy M.; Habets, Florence; Kim, Jinwon; Kowalczyk, Eva; Mitchell, Ken; Nasonova, Olga N.; Noilhan, Joel; Pitman, Andrew; Schaake, John; Shmakin, Andrey B.; Smirnova, Tatiana G.; Wetzel, Peter; Xue, Yongkang; Yang, Zong-Liang; Zeng, Qing-Cun (American Meteorological Society, 2009-12-18)
    The Project for Intercomparison of Land-Surface Parameterization Schemes phase 2(d) experiment at Valdai, Russia, offers a unique opportunity to evaluate land surface schemes, especially snow and frozen soil parameterizations. ...
  • The effects of low impact development on urban flooding under different rainfall characteristics 

    Qin, Hua-peng; Li, Zhuo-xi; Fu, Guangtao (Elsevier, 2013)
    Low impact development (LID) is generally regarded as a more sustainable solution for urban stormwater management than conventional urban drainage systems. However, its effects on urban flooding at a scale of urban drainage ...
  • Efficiency droop in InSb/AlInSb quantum-well light-emitting diodes 

    Nash, G.R.; Mirza, B.I. (American Institute of Physics (AIP), 2013)
    Efficiency droop in InSb/AlxIn1−xSb quantum-well light-emitting diodes has been investigated as a function of temperature for devices containing 20 nm, 40 nm, and 100 nm wide quantum well active regions. The amount of droop ...
  • Efficiency of Exciton and Charge Carrier Photogeneration in a Semiconducting Polymer 

    Hendry, Euan; Schins, Juleon M.; Candeias, L. P.; Siebbeles, L. D. A.; Bonn, Mischa (American Physical Society, 2004)
    We determine the efficiencies for the formation of excitons and charge carriers following ultrafast photoexcitation of a semiconducting polymer (MEH-PPV). The simultaneous, quantitative determination of exciton and charge ...
  • Efficiency of radiative emission from thin films of a light-emitting conjugated polymer 

    Wasey, J. A. E.; Safanov, A.; Samuel, I. D. W.; Barnes, William L. (American Physical Society, 2001)
    We examine the efficiency of radiative emission from thin layers of light-emitting conjugated polymers. We compare our experimental results for photoluminescence of the conjugated polymer poly(2-methoxy, 5-(2′-ethyl-hexyloxy) ...
  • Efficient coupling of surface plasmon polaritons to radiation using a bi-grating 

    Worthing, P. T.; Barnes, William L. (American Institute of Physics, 2001)
    A nanostructured surface in the form of a bi-grating is shown to efficiently couple surface plasmon polaritons to free-space radiation in the visible part of the spectrum. Coupling was achieved for all propagation directions ...
  • Efficiently identifying pareto solutions when objective values change 

    Fieldsend, Jonathan E.; Everson, Richard M. (ACM, 2014)
    In many multi-objective problems the objective values assigned to a particular design can change during the course of an optimisation. This may be due to dynamic changes in the problem itself, or updates to estimated ...
  • Eight new T4.5-T7.5 dwarfs discovered in the UKIDSS large area survey data release 1 

    Lodieu, N.; Pinfield, D.J.; Leggett, S.K.; Jameson, R.F.; Mortlock, D.J.; Warren, S.J.; Burningham, B.; Lucas, P.W.; Chiu, K.; Liu, M.C.; Venemans, B.P.; McMahon, R.G.; Allard, F.; Baraffe, I.; Navascue, D.B.Y.; Carraro, G.; Casewell, S.L.; Chabrier, G.; Chappelle, R.J.; Clarke, F.; Day-Jones, A.C.; Deacon, N.R.; Dobbie, P.D.; Folkes, S.L.; Hambly, N.C.; Hewett, P.C.; Hodgkin, S.T.; Jones, H.R.A.; Kendall, T.R.; Magazzu, A.; Martin, E.L.; McCaughrean, M.J.; Nakajima, T.; Pavlenko, Y.; Tamura, M.; Tinney, C.G.; Osorio, M.R.Z. (Oxford University Press for Royal Astronomical Society, 2007)
    We present eight new T4.5-T7.5 dwarfs identified in the UKIRT (United Kingdom Infrared Telescope) Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS) Data Release 1 (DR1). In addition we have recovered the T4.5 dwarf ...
  • ElAM: A computer program for the analysis and representation of anisotropic elastic properties 

    Marmier, Arnaud; Lethbridge, Zoe A. D.; Walton, Richard I.; Smith, Christopher W.; Parker, Stephen C.; Evans, Kenneth E. (Elsevier, 2010)
    The continuum theory of elasticity has been used for more than a century and has applications in many fields of science and engineering. It is very robust, well understood and mathematically elegant. In the isotropic case ...