Results 1 - 10 of 173784
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[en] Constructing the temperature-dependent supercharge and Hamiltonian from their expression at zero temperature it has been demonstrated that the supersymmetric graded algebra remains invariant with respect to temperature. Visualizing the effect of temperature on these supersymmetric operators as perturbation, it has been shown that the supersymmetry is broken when these operators or the states (not both) depend on temperature, while it is restored when the mixed picture is taken where the state and operators are both temperature dependent
[en] The issue of crystallization in polymers and its relation with the glassy temperature Tg and the homogeneous nucleation temperature is investigated (M.W.O.)
[pt]Investiga-se a questao da cristalizacao de polimeros e sua relacao com a temperatura vitrea Tg e a temperatura de nucleacao homogenea T-. (M.W.O.)
[en] We study optimal dense coding in the two-qubit and two-qutrit Heisenberg XXX models with Dzyaloshinskii-Moriya anisotropic antisymmetric interaction (DM interaction). Both the DM interaction and the coupling parameter can enhance the maximum dense coding capacity for high temperature. For low temperature, in the two-qutrit system, the coupling parameter still enhances the maximum dense coding capacity, while the DM interaction weakens the capacity of the channel for dense coding.
[en] The high national production of avocados expected for the next years asks for the opening of new markets to be reached by ship. For this reason, it is necessary to increase the shelf-life of avocados for a period of 40 days at least. Therefore, the effect of combined treatment: mild heat (460C, 20 min) and low radiation doses (25, 50, 100 Gy), in avocados is studied. Additional parameters considered in this study are: wrapping with PVC film, storage temperature (70C and room temperature), two different degrees of ripening. Best results are obtained with the lowest dose (25 Gy) and low degree of ripening of wrapped avocados, stored at 70C. After 40 days, 98,6% of the avocados were well preserved and 85,5% after 50 days. When compared with non irradiated samples, avocados irradiated with 25 Gy show 25% and 34% higher undamaged percentage after 40 and 50 days of storage; respectively. A negative effect is obtained when irradiation is applied to avocados with a high degree of ripening. Room temperature is not suitable for a long storage period of avocados. (Author)
[en] In this brief communication, based on joint with E. Hatefi and I.Y. Park papers [9, 10], I discuss a criterion for constructing 11D/10D maximal supergravity black-brane solutions with the near-extremal S ∼ n3 T5 entropy-temperature dependence and their lower dimensional descents.