The Pontifical Catholic University of Paraná is a private, not-for-profit Catholic university. The main campus is located in Curitiba, the capital city of the State of Paraná, Brazil. Four additional campuses are located in the cities of Londrina, Maringá, São José dos Pinhais and Toledo. It is maintained by APC , an organization run by Marist Brothers. The Catholic Archbishop of the city of Curitiba is the ceremonial chancellor of the University.The Curitiba campus was the first to be established and houses five academic units: the Center for Biological and Health science, the Center for Exact science and Technology, the Center for Juridical and Social science, the Center for Humanities and Theology, and the Business School. The main buildings of the campus are the central library, which manages the integrated library system , research labs, classrooms and lecture halls, a 570-seat theater, a pilot plant, and a sports complex. The Museum of Zoology, with a collection of over 6,000 specimens and an Herbarium with approximately 7,000 preserved plant specimens are located on the Curitiba Campus.There are more than 27,000 students in 60 undergraduate and over 150 postgraduate courses. Over 80% of the faculty possess a master's or doctoral degree. There are 22 graduate courses, at master's and doctoral levels: Health science, Law, Animal Science, Urban Management, Philosophy, Theology, Business Administration, Mechanical Engineering, Dental Health, Production Engineering, Education, Informatics and Health Technology. Wikipedia.
Pecoits-Filho R.,Pontifical Catholic University of Parana
Rheumatology International | Year: 2010
Ankylosing spondylitis (AS) is a systemic inflammatory rheumatic disease characterized primarily by axial joint involvement, sacroiliitis and various extra-articular manifestations. High cardiovascular mortality in AS has led many researchers to investigate possible risk factors involved with cardiovascular disease in these patients. This review summarizes published data concerning endothelial dysfunction and atherosclerosis in patients with AS. The author discusses current limitations and problems related to a better assessment of these two possible changes in AS. © 2010 Springer-Verlag.
Brum R.T.,Pontifical Catholic University of Parana
General Dentistry | Year: 2014
The aim of this study was to evaluate quantitatively the fluorescence of resin composites and human teeth, and to determine the stability of fluorescence after aging. Ten specimens were built using a 1 mm thick increment of dentin composite overlapped by a 0.5 mm thick increment of enamel composite. Ten sound human molars were sectioned and silicon carbide-polished to obtain enamel and dentin slabs 1.5 mm in thickness. Fluorescence measurements were carried out by a fluorescence spectrophotometer before and after thermocycling (2000 cycles, 5°C and 55°C). One-way analysis of variance with repeated measures and Tukey's test were performed at a significance level of 5%. Most of the tested composites showed significant differences in fluorescence both before and after aging (P < 0.05). Opallis was the only composite whose fluorescence was similar to that of human teeth at both periods of evaluation (P > 0.05), and was the only composite that showed comparable results of fluorescence to the tooth structure before and after thermocycling. With the exception of Filtek Supreme, there were significant reductions in fluorescence intensity for all the tested composites (P < 0.05).
Askarzadeh A.,Kerman Graduate University of Technology |
Dos Santos Coelho L.,Pontifical Catholic University of Parana
Energy Conversion and Management | Year: 2015
The main goal of this paper is to provide a framework to accurately estimate the electrical equivalent circuit parameters of photovoltaic arrays by use of an efficient heuristic technique. Owing to the non-linearity of the current vs. voltage (I-V) characteristics of PV modules, using a superior optimization technique helps to effectively find the real electrical parameters. Inspired by the mating process of different bird species, bird mating optimizer (BMO) is a new invented search technique which has shown superior performance for solving complex optimization problems. In this paper, the original BMO algorithm is simplified and used to estimate the electrical parameters of the module model for an amorphous silicon PV system at different operating conditions. The simplified BMO (SBMO) eliminates tedious efforts of parameter setting in original BMO and also modifies some rules. The usefulness of the proposed algorithm is investigated by comparing the obtained results with those found by two particle swarm optimization (PSO) variants, two harmony search (HS) variants as well as seeker optimization algorithm (SOA). Based on the investigated situations of this paper, SBMO yields more accurate results than the other studied methods. © 2014 Elsevier Ltd. All rights reserved.
Coelho L.d.S.,Pontifical Catholic University of Parana
Expert Systems with Applications | Year: 2010
Particle swarm optimization (PSO) is a population-based swarm intelligence algorithm that shares many similarities with evolutionary computation techniques. However, the PSO is driven by the simulation of a social psychological metaphor motivated by collective behaviors of bird and other social organisms instead of the survival of the fittest individual. Inspired by the classical PSO method and quantum mechanics theories, this work presents novel quantum-behaved PSO (QPSO) approaches using mutation operator with Gaussian probability distribution. The application of Gaussian mutation operator instead of random sequences in QPSO is a powerful strategy to improve the QPSO performance in preventing premature convergence to local optima. In this paper, new combinations of QPSO and Gaussian probability distribution are employed in well-studied continuous optimization problems of engineering design. Two case studies are described and evaluated in this work. Our results indicate that Gaussian QPSO approaches handle such problems efficiently in terms of precision and convergence and, in most cases, they outperform the results presented in the literature. © 2009 Elsevier Ltd. All rights reserved.
Bazzi J.Z.,Pontifical Catholic University of Parana
Journal of the American Dental Association (1939) | Year: 2012
The authors conducted a study to evaluate the stain removal ability of tooth bleaching and simulated toothbrushing after coffee and cigarette smoke staining and to determine the enamel susceptibility to restaining. The authors used a colorimeter to determine the baseline color of 40 bovine labial enamel surfaces according to the Commission Internationale de l'Eclairage L*a*b* coordinates. They immersed one-half of the specimens in coffee and exposed one-half to cigarette smoke in a smoking machine. They took color measurements again and determined the color change from baseline (ΔE1) for each group. The authors divided each group into two subgroups and subjected the specimens to at-home bleaching (one hour per day for 21 days) or simulated toothbrushing (120 cycles per day for 21 days), followed by another color measurement (ΔE2). The authors repeated both staining procedures (that is, cigarette smoke and coffee) and followed them with a third color measurement (ΔE3). They analyzed the data by using a two-way analysis of variance and the Tukey test (α = 5 percent). Both staining procedures resulted in similar values for ΔE1. The specimens stained with coffee and cigarette smoke exhibited a significant reduction in color change after bleaching (P < .05). However, toothbrushing resulted in a significantly reduced color change only for cigarette smoke-stained specimens (P < .001). The discoloration in coffee-stained specimens increased after restaining, irrespective of the stain removal method (P < .05). The study results show that at-home bleaching removed both coffee and cigarette smoke staining. The restaining potential was greater for specimens stained with coffee than for those stained with cigarette smoke, regardless of the removal method used. Six percent hydrogen peroxide at-home bleaching was effective in removing stains caused by coffee or cigarette smoke. However, continued frequent consumption of coffee can increase the staining susceptibility of enamel.