Browsing Mathemateg a Ffiseg / Mathematics & Physics by Title

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  • Bronstein, Hugo A.; Finlayson, Christopher Edward; Kirov, Kiril R.; Friend, Richard H.; Williams, Charlotte K. (2008-07-14)
    A series of heteroleptic cyclometalated Ir(III) complexes with the general structure [Ir(piq-X)(2)(acac)] (where piq = 1-phenylisoquinolato, X = bromine, 9,9-dioctyl-2-fluorenyl, poly(9,9-dioctyl-2,7-fluorene), acac = ...
  • Li, Xing; Lu, Q. M.; Li, B. (2007-04-24)
    Two scenarios of possible ion heating due to finite amplitude parallel propagating Alfvén waves in the solar atmosphere are investigated using a one-dimensional test particle approach. (1) A finite amplitude Alfvén wave ...
  • Skinner, Lawrie B.; Barnes, Adrian C.; Salmon, Philip S.; Hennet, Louis; Fischer, Henry E.; Benmore, Chris J.; Kohara, Shinji; Weber, J. K. Richard; Bytchkov, Aleksei; Wilding, Martin C.; Parise, John B.; Farmer, Thomas O.; Pozdnyakova, Irina; Tumber, Sonia K.; Ohara, Koji (2013-01-03)
    The structure of liquid alumina at a temperature similar to 2400 K near its melting point was measured using neutron and high-energy x-ray diffraction by employing containerless aerodynamic-levitation and laser-heating ...
  • Miguel, M. Carmen; Mughal, Adil; Zapperi, Stefano (2011)
    We consider the laminar flow of a vortex crystal in the Corbino disk geometry. Laminar flow can be induced by thermal fluctuations melting the crystal, but also by shear stress after applying a large current at zero ...
  • Dorrian, Gareth (Aberystwyth UniversityMathematical and Physical Sciences, 2009)
    This thesis discusses new observations made of large scale solar wind structure during solar minimum conditions. The phenomena of interplanetary radio scintillation (IPS) is exploited and used in conjunction with white ...
  • Cullen, M. J. P.; Douglas, Robert J. (2003-04)
    It is shown how large-amplitude stability results for flows governed by potential-vorticity conservation can be obtained by geometric arguments using rearrangements of functions. The method allows for non-smooth solutions, ...
  • Bisi, Mario Mark; Breen, Andrew; Fallows, Richard A.; Habbal, Shadia Rifai; Jones, R. A. (2007-06-01)
    We present the results of a comprehensive study of the fast solar wind near solar minimum conditions using interplanetary scintillation (IPS) data taken with the EISCAT system in northern Scandinavia, and a recent extremely ...
  • Jones, D. G.; Vaidyanathan, S.; Jenkins, Tudor; Ellis, J. (2007-07-15)
    Laser desorption/ionization mass spectrometry (LDI-MS) on porous silicon is a promising analytical strategy for the rapid detection of metabolites in biological matrices. We show that both oxidized and unoxidized porous ...
  • Jones, Aled R.; Shaw-West, Rachel N.; Winter, Rudolf; Massiot, Dominique; Florian, Pierre; Wolff, Matthias (2007-01-30)
    The time resolution achievable in in-situ high-temperature nuclear magnetic resonance (NMR) experiments is investigated using laser heating of refractory materials. Three case studies using 27Al in alumina nano-particles, ...
  • Iwaniak, Wojciech; Fritzsche, J.; Zukalova, M.; Winter, Rudolf; Wilkening, Martin; Heitjans, Paul (2009-04)
    Spinel-type structured Li4+xTi5O12 (0 6 x 6 3 ) is actually one of the most promising anode materials for Li ion batteries. In its nanostructured form it is already used in some commercially available Li ion batteries. As ...
  • Winter, Rudolf; Heitjans, Paul (2001)
    The layered fast ion conductor LixTiS2 (x ≈ 2/3) has been prepared in nanocrystalline (n-LixTiS2) and amorphous (a-LixTiS2) forms. Hence, a direct comparison of the lithium diffusion in a homogeneously and a heterogeneously ...
  • Hill, Joe M.; Lloyd, Noel G.; Pearson, Jane M. (2008)
    We present some properties of a differential system that can be used to model intratrophic predation in simple predator-prey models. In particular, for the model we determine the maximum number of limit cycles that can ...
  • Gough, John Edward; Gohm, Rolf; Yanagisawa, Masahiro (2008-12-08)
    The mathematical theory of quantum feedback networks has recently been developed [J. Gough and M. R. James, e-print arXiv:0804.3442v2] for general open quantum dynamical systems interacting with bosonic input fields. In ...
  • Palmer, Alison (Aberystwyth UniversityMathematical and Physical Sciences, 2007)
    The linear stability of the Giesekus and linear Phan-Thien Tanner (PTT) fluid models is investigated for a number of planar Poiseuille flows in single, double and triple layered configurations. The Giesekus and PTT models ...
  • Greaves, George; Hennet, L.; Jenkins, T. E.; Landron, C. (2001)
    The neutron scattering structure factor SN(Q) for a 40 mg drop of molten alumina ( Al2O3) held at 2500 K, using a laser-heated aerodynamic levitation furnace, is measured for the first time. A 1700 atom model of liquid ...
  • Greaves, G. N.; Wilding, M. C.; Fearn, S.; Kargl, F.; Hennet, L.; Bras, W.; Majerus, O.; Martin, Chris M. (2009-05-01)
    Employing small angle X-ray scattering (SAXS) and wide angle X-ray scattering (WAXS) combined with laser-heated aerodynamic levitation has enabled different transitions in Supercooled yttrium oxide-aluminium oxide to be ...
  • Burgarth, Daniel Klaus; Bose, Sougato; Bruder, Christoph; Giovannetti, Vittorio (2009)
    We give a sufficient criterion that guarantees that a many-body quantum system can be controlled by properly manipulating the (local) Hamiltonian of one of its subsystems. The method can be applied to a wide range of ...
  • Wilding, Martin C.; Badyal, Yaspal; Navrotsky, Alexandra (2007-12-15)
    Neutron diffraction data on lanthanide-bearing sodium silicate glasses were collected using the glass, liquid and amorphous materials diffractometer (GLAD) at the intense pulsed neutron source (IPNS), Argonne. Measurements ...
  • Heule, Rahel; Bruder, Christoph; Burgarth, Daniel; Stojanović, Vladimir M. (2010)
    Motivated by some recent results of quantum control theory, we discuss the feasibility of local operator control in arrays of interacting qubits modeled as isotropic Heisenberg spin chains. Acting on one of the end spins, ...
  • Mishuris, G.; Movchan, A.; Slepyan, L. I. (Springer, 2009)
    This review paper outlines several formulations for lattice structures where dynamic lattice Green's functions play an important role in analysis of localization near defects as well as fracture in structured media. The ...

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