[PDF] Top 20 Braz. J. Phys. vol.35 número3A

... In this paper, we describe fluctuation conductivity in poly- crystalline samples of Y1 −x Pr x Ba2Cu3O7 − δ ( 0 ≤ x ≤ 0.10 ). To identify power- law divergences in the conductivity, the [r] ... See full document

... Furthermore, in the context of the Implicitly Regularization, finite(physical) and divergent (counterterms) parts of the amplitude can and must be written in terms of a single scale whic[r] ... See full document

... The results show that these parameters present high values in the low-pass filtered time-series, indicating that the intermittence level is superior at large scales (low-frequencies) if [r] ... See full document

... One is the rotation of the magnetic particle inside the liquid carrier, known by the names of Debye rotation or Brownian rotation ; this last name is because, even in absence of a magnet[r] ... See full document

... The present development of theories for the thermodynam- ics of irreversible processes contained, one way or another, within the list of four levels presented above, and IST is one of them, brings to the fore a ... See full document

... materials.[1] This phenomenon is mainly attributed to the mis- orientation between the grains usually referred to as the meso- texture.[2] High angle grain boundaries can act as Josephson coupled weak links, leading to a ... See full document

... are the same as in Fig. The lower curves are for the same parameters, at τ = 80. Other parameters are the same as in Fig. It is seen that, both at the end of the LH phase and at the end [r] ... See full document

... The category of iron meteorites corresponds to about 5 % of the modern meteorite falls. In the study of Fe-Ni-bearing meteorites, there is a recent discussion about the formation of a low-moment Fe-rich γ phase which ... See full document

... [18] E. Elizalde, S. D. Odintsov, A. Romeo, A. A. Bytsenko and S. Zerbini: Zeta Regularization Techniques with Applications, World Scientific, Singapore (1994). See also R. Ruggiero, A. H. Zimerman and A. Villani, Rev. ... See full document

... Considering the BRST quantization of a noncommutative theory we will find that some usual gauge choices for the noncommutative theo- ries are mapped in a non trivial way in the ordinary [r] ... See full document

... NMR has been, by far, the most sucessful technique in the demonstration of the principles of quantum computing in small systems, and was responsible for the initial excite- ment which le[r] ... See full document

... [1] T.C. Lim, J. Math. Chem. 33, 279 (2003). [2] T.C. Lim, J. Math. Chem. 34, 221 (2003). [3] T.C. Lim, J. Math. Chem. 36, 139 (2004). [4] T.C. Lim, J. Math. Chem. 36, 147 (2004). [5] T.C. ... See full document

... (“harmonic vol- ume”) and an intensive variable (“harmonic pressure”) allow to view the problem of BEC in a harmonic potential through the corresponding equation of state, P = P (N/ V , T ... See full document

... We propose experiments using ultra cold neutrons which can be used to determine the electric dipole moment of the neutron itself, a well as to test corrections to gravity as they are for[r] ... See full document

... In order to show that the ET holds for non-perturbative next-to-leading order, we calculate Higgs decays into gauge bosons and pions in the large N limit... From this figure it can be se[r] ... See full document

... croscopic structure and the ionic conductivity, fact based in the different types of composition in the alkali silicate glasses presented. Both alkali system compositions fall into an identi- fiable pattern where ... See full document

... Regarding temporal structure, we compared transition probabilities for square, Gaussian and cosine squared temporal profiles; we find that for the same FWHM, Gaussian and cosine squared [r] ... See full document

... This result might be explained by a simple argument based on the electric field lines, as follows. The process of creat- ing the defect involves cutting out a wedge of space, which leave[r] ... See full document

... The probability of formation of various residual nucleus configurations and the corresponding excitation energies were obtained as a function of the energy ω transferred to the proton by[r] ... See full document

... Given the conceptual modified fast energy ADS under study [8,9], it is proposed a solid lead zero power ADS, us- ing U/Th fuel, and using as neutron source proton or deu- terium from the[r] ... See full document