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  1. No Access

    Article

    Symmetries, integrals and solutions of ordinary differential equations of maximal symmetry

    Second- and third-order scalar ordinary differential equations of maximal symmetry in the traditional sense of point, respectively contact, symmetry are examined for the map**s they produce in solutions and ...

    P. G. L. Leach, R. R. Warne, N. Caister, V. Naicker… in Proceedings - Mathematical Sciences (2010)

  2. No Access

    Chapter and Conference Paper

    Acceleration of Diffusional Jumps of Interstitial Fe with Increasing Ge Concentration in Si1−xGex Alloys Observed by Mössbauer Spectroscopy

    Radioactive 57Mn isotopes have been implanted into Si1−xGex crystals (x ≤ 0.1) at elevated temperatures for Mössbauer studies of the diffusion of interstitial 57Fe daughter atoms. The atomic jump frequency is fou...

    G. Weyer, H. P. Gunnlaugsson, K. Bharuth-Ram, M. Dietrich, R. Mantovan… in HFI/NQI 2004 (2005)

  3. Article

    Open Access

    Symmetry Reductions of a Hamilton-Jacobi-Bellman Equation Arising in Financial Mathematics

    We determine the solutions of a nonlinear Hamilton-Jacobi-Bellman equation which arises in the modelling of mean-variance hedging subject to a terminal condition. Firstly we establish those forms of the equati...

    V Naicker, K Andriopoulos, P G L Leach in Journal of Nonlinear Mathematical Physics (2005)

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  4. No Access

    Article

    Acceleration of Diffusional Jumps of Interstitial Fe with Increasing Ge Concentration in Si1 − x Ge x Alloys Observed by Mössbauer Spectroscopy

    Radioactive 57Mn isotopes have been implanted into Si1 − x Ge x crystals (x ≤ 0.1) at elevated temperatures for Mössbauer studies of the diffusion of int...

    G. Weyer, H. P. Gunnlaugsson, K. Bharuth-Ram, M. Dietrich… in Hyperfine Interactions (2004)

  5. No Access

    Article

    The electric field gradient at111Cd in vanadium oxides

    The electric field gradient (efg) of111Cd in polycrystalline V2O5 was studied using perturbed angular correlation (PAC) spectroscopy, with the111In activity ion-implanted at 400 keV. Between the individual steps ...

    V. Naicker, A. Bartos, K. P. Lieb, M. Uhrmacher, T. Wenzel… in Hyperfine Interactions (1993)