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Ponta Grossa, Brazil

The State University of Ponta Grossa is one of the five state universities in Paraná, Brazil. The institution has two campi in Ponta Grossa city as well as a college ground in each of the following cities: Telêmaco Borba, Palmeira, Castro, São Mateus do Sul e Jaguariaíva.The Institution offering 28 undergraduate courses and 6 qualifications, in addition to post-graduate courses at the level of specialization, master's and doctoral degrees. Its area of influence covers approximately 22 municipalities of the State of Parana. Wikipedia.

La Guardia G.G.,State University of Ponta Grossa
Quantum Information Processing

In this paper we extend to asymmetric quantum error-correcting codes the construction methods, namely: puncturing, extending, expanding, direct sum and the (u|u +v) construction. By applying these methods, several families of asymmetric quantum codes can be constructed. Consequently, as an example of application of quantum code expansion developed here, new families of asymmetric quantum codes derived from generalized Reed-Muller codes, quadratic residue, Bose-Chaudhuri-Hocquenghem, character codes and affine-invariant codes are constructed. © 2013 Springer Science+Business Media New York. Source

La Guardia G.G.,State University of Ponta Grossa
IEEE Transactions on Information Theory

New quantum maximum-distance-separable (MDS) codes with parameters [[q 2 + 1, q 2 -2d + 3, d]] q, where q=2 t, t ≥ 1 and 3 ≤ d ≤ q+1 is an odd integer, are constructed in this paper. © 2011 IEEE. Source

Kossatz S.,State University of Ponta Grossa
Journal of the American Dental Association (1939)

The authors conducted a study to evaluate tooth sensitivity (TS) and the bleaching effectiveness associated with use of a calcium-containing (CC) in-office bleaching gel. The authors used a 35 percent calcium-free (CF) hydrogen peroxide gel and a 35 percent CC hydrogen peroxide gel according to the manufacturer's instructions in 40 caries-free participants 18 years or older. They performed two bleaching sessions with a one-week interval between sessions. The authors registered the color at baseline and after the first and second bleaching sessions by using a shade guide and by gauging the participant's perception of TS as registered on a scale from 0 (none) to 4 (severe). The authors evaluated the bleaching effectiveness at each week's recall visit by means of the Friedman test, and they compared the groups at each assessment point by means of the Mann-Whitney test. They evaluated the percentage of participants with TS and the intensity of the TS by using the Fisher exact and Mann-Whitney tests. Both groups demonstrated equivalent and significant tooth color enhancement compared with color values at baseline (P < .05), with an average bleaching of 7 to 8 shade guide units. Most of the participants from the CF group (80 percent) experienced sensitivity while undergoing the bleaching regimen, whereas only 40 percent of participants from the CC group reported experiencing TS (P = .02). The intensity of TS was significantly higher (P < .01) for the CF group during in-office dental bleaching. The CC 35 percent hydrogen peroxide gel reduced the TS during in-office dental bleaching without jeopardizing the bleaching effectiveness. The results of this study support the findings that a CC 35 percent hydrogen peroxide gel can reduce TS during in-office dental bleaching. Source

Andrade F.M.,State University of Ponta Grossa | Silva E.O.,Federal University of Maranhao
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

In this Letter we study the Aharonov-Bohm problem for a spin-1/2 particle in the quantum deformed framework generated by the κ-Poincaré-Hopf algebra. We consider the nonrelativistic limit of the κ-deformed Dirac equation and use the spin-dependent term to impose an upper bound on the magnitude of the deformation parameter ε. By using the self-adjoint extension approach, we examine the scattering and bound state scenarios. After obtaining the scattering phase shift and the S-matrix, the bound states energies are obtained by analyzing the pole structure of the latter. Using a recently developed general regularization prescription [Phys. Rev. D. 85 (2012) 041701(R)], the self-adjoint extension parameter is determined in terms of the physics of the problem. For last, we analyze the problem of helicity conservation. © 2013 Elsevier B.V. Source

La Guardia G.G.,State University of Ponta Grossa
International Journal of Theoretical Physics

Several families of good nonbinary asymmetric quantum codes are constructed in this paper. These new quantum codes are derived from the Calderbank-Shor-Steane (CSS) construction as well as the Hermitian construction applied respectively to two classical nested Bose-Chaudhuri-Hocquenghem (BCH) codes where one of them are additionally Euclidean (Hermitian) dual-containing. The asymmetric codes constructed here have parameters better than the ones available in the literature. © 2014 Springer Science+Business Media New York. Source

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