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We discuss the effect on nuclear shell theory of an interaction potential between Ghd Hair Straighteners Uk Only
nucleous containing a repulsive core. We show that a repulsive hard core gives rise to the same interaction energy as a delta function potential of strength 4π(2a/m), where a is the range of the core a m the mass of the nucleon. The interaction energies for Yukawa potentials with and without repulsive cores, are compared.
A class of infinite horizon two-point boundary value problems is investigated. Under some monotonicity assumptions, the existence and uniqueness of solutions is proved by means of a homotopy approach and the global exponential asymptotical stability for this class of equations is obtained by choosing an appropriate Lyapunov function. We give a comparison theorem and an application to singularly perturbed problems.
From the threshold energies for photoemission of electrons and holes from Ce and Mg contacts into anthracene the band gap is found to be 3.72 ± 0.03 eV.