Centro Universitario Ritter dos Reis

Angra dos Reis, Brazil

Centro Universitario Ritter dos Reis

Angra dos Reis, Brazil
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Vidor D.L.R.,Centro Universitario Ritter Dos Reis | Rosa E.,Federal University of Santa Maria | Rigo N.,Federal University of Santa Maria | Pinheiro J.R.,Federal University of Santa Maria
2016 12th IEEE International Conference on Industry Applications, INDUSCON 2016 | Year: 2017

This article presents a hybrid series converter named Switched-Linear (SL) Series Converter. This converter could operate as a DC-DC, DC-AC or AC-DC structure. The linear power unit is a conventional Class AB power amplifier, which is fed by two tracking power supplies to boost the efficiency of the linear unit without worsen any qualities of the linear power amplifier. The efficiency can be achieved by decreasing the voltage in the linear amplifier to the lowest possible level for the application. The main goal of this article is to show the possibility of draining reversal power energy whenever it processes reversal power flux and/or non-resistive loads while maintaining high efficiency. Therefore, by combining the linear and the switched power amplifiers, the system has synthetic performance of high fidelity, high efficiency and excellent dynamic characteristics. © 2016 IEEE.


De Borba L.S.,Federal University of Rio Grande do Sul | De Borba L.S.,Centro Universitario Ritter dos Reis | Pereira K.R.G.,Federal University of Rio Grande do Sul | Valentini N.C.,Federal University of Rio Grande do Sul
Revista da Educacao Fisica | Year: 2017

Little is known about the impact of environmental factors and daily tasks for the infant development which the adolescent mother is exposed. Therefore the present study was to identify associations and predictors of motor and cognitive development of infants of adolescent and adult mothers. Participated 40 babies aged between 0 and 18 months, 20 babies in each group - adolescent and adult mothers. Alberta Motor Infant Scale, Bayley Scale of Infant Development; Affordances in the Home Environment for Motor Development, Knowledge of Infant Development and Daily Activities of Infant was used for assessments. A strong association between motor skills and cognition (r2 = 0.88) in both groups was observed. The predictors of motor development in the adolescent mother group were paternal age, home space, the mother does not work outside the home, parents' educational level, number of toys and adults in the household, parenting practices and knowledge of parents The predictors of cognitive development were parents living together, the amount of rooms in the residence and parenting practices. In the adult mother group, the predictors of motor development were the cognitive development, caesarean birth, parents living together, amount of rooms in the residence and parenting practices. As predictors of cognitive development, remained in the regression model the motor development, number of days in the ICU, number of rooms in the residence and parental practice. Conclusions: The interdependence between cognition and motor skills, family and residence characteristics, and parenting practices were the main determinants of infant trajectory.


Berti Zanella P.,Porto Alegre General Hospital HCPA | Donner Alves F.,Centro Universitario Ritter Dos Reis | Guerini De Souza C.,Porto Alegre General Hospital HCPA | Guerini De Souza C.,Federal University of Rio Grande do Sul
Journal of Sports Medicine and Physical Fitness | Year: 2017

Introduction: Beta-alanine (BA) is a non-essential amino acid that can be synthesized in the liver and obtained from diet, particularly from white and red meat. Increased availability of BA via dietary supplement, may improve performance of athletes. The aim of this study was to conduct a review of the use of BA supplementation as an ergogenic aid to improve performance and fatigue resistance in athletes and non-athletes. Evidence Acquisition: In this systematic review, a search in PubMed and Bireme databases was performed for the terms "beta-alanine," "beta-alanine and exercise," "carnosine" or "carnosine and exercise" in the titles or abstracts. We included randomized, clinical trials published between 2005 and 2015. Evidence Synthesis: Twenty-three studies were selected. Most of them included physically active individuals. The mean intervention period was 5.2±1.8 weeks, and mean BA dose was 4.8±1.3 g/day. The main outcome measures were blood lactate, pH, perceived exertion, power and physical working capacity at fatigue threshold. After BA supplementation, no statistically significant difference was observed in total work, exercise performance time, oxygen consumption and time to exhaustion. Conclusions: BA supplementation seems to improve perceived exertion and biochemical parameters related to muscle fatigue and less evidence was found for improvement in performance. © 2016 Edizioni Minerva Medica.


Vidor D.L.R.,Centro Universitario Ritter Dos Reis | Rosa E.,Federal University of Santa Maria | Rigo N.,Federal University of Santa Maria | Pinheiro J.R.,Federal University of Santa Maria
2017 IEEE 8th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2017 | Year: 2017

This article presents some similarities of switched and linear converters and focuses on a Switched-Linear (SL) approach. The analysis shows that the goals of linear converters is similar to that of switched converters. The objective of the development of them is increasing the converter's manipulated power and efficiency. By mixing both structures is possible to produce a converter that has synthetic performance of high fidelity, high efficiency, and excellent dynamic characteristics. The paper also presents an analysis of an SL converter, its design, simulation, and experimental results. The past, present and future trend of hybrid converter is discussed. © 2017 IEEE.


Zampieri F.L.,University Federal da Fronteira Sul | Da Costa Braga A.,Federal University of Rio Grande do Sul | De Ugalde C.M.,Grande Rio University | Rigatti D.,Centro Universitario Ritter dos Reis
SSS 2015 - 10th International Space Syntax Symposium | Year: 2015

Understanding generative pedestrian movement causes is a key urban planning issue, especially when it comes to verify public policies efficiency towards open public spaces maintenance or improvement and the correlation of such governance actions in strengthening social dynamics. Pedestrian movement is a complex phenomenon which patterns emerge from the interaction among multidimensional variables ranging from cultural behavioural patterns underlying social relations, spatial configuration accessibility patterns to sidewalk attributes. The most effective problem-solving tools applied in order to improve pedestrian movement focus on modelling sidewalk attributes through the relations held amidst their physical variables. In this paper we introduce a modelling method which processes data interactions through artificial neural networks and genetic algorithms. Hybrid data parallel processing allow the comparison between potential and empirically measured pedestrian movement based on space syntax variables and sidewalks service levels. It provides accurate and reliable descriptions for public open spaces social appropriation patterns and its correlations to changes in urban grid morphology and functional centralities. The model proved its efficiency in processing simultaneously large data samples which consider whole urban areas global spatial structure, what enabled the impact analysis of large scale vehicular through movement on local scale movement and depict changes on pedestrian behaviour. The empirical case from which data were collected, the city of Criciúma / Brazil, summarizes a pervasive phenomenon to several Brazilian cities located on crossroads-the rupture of a consolidated functional centrality by the convergence between roads and main street sectioning the city core and causing the emergence of dynamic barriers related to heavy traffic through movement which imposes discontinuities to the urban grid, changing natural movement potentials, social appropriation and land use patterns. Modelling data samples altogether for the whole configuration failed to provide significant correlations to measured pedestrian movement. Several modelling tests indicated that axial lines which displayed higher Choice variable values, that is, indicated higher fluxes probability through the urban system were coincident with morphological neighbourhood boundaries. Evidences obtained through the separated modelling of zones bounded by axial lines which displayed higher global Choice values led to the corroboration of the following hypothesis: barriers aroused by high regional and global accessibility road lanes might divide city cores and trigger morphological transformations that induce differentiation among the resulting parts which are coherent to the degree of spatial segregation. The outcome of this complex process at local scale is the socially shared acknowledgment of distinct neighbourhood boundaries defined by drastic changes on the spatial logic underlying the production of urban space depicted by pedestrians through morphological properties changes. It grants legibility to eventual spatial segregation imposed by a through movement route linking the city core to its regional surroundings.


Trevisan L.M.,Federal University of Rio Grande do Sul | Nalin T.,Federal University of Rio Grande do Sul | Tonon T.,Federal University of Rio Grande do Sul | Veiga L.M.,Centro Universitario Ritter dos Reis | And 4 more authors.
Ciencia e Saude Coletiva | Year: 2015

Treatment of phenylketonuria (PKU) includes the use of a metabolic formula which should be provided free of charge by the Unifed Health System (SUS). This retrospective, observational study sought to characterize judicial channels to obtain PKU treatment in Rio Grande do Sul (RS), Brazil. Lawsuits fled between 2001– 2010 and having as benefciaries PKU patients requesting treatment for the disease were included. Of 20 lawsuits fled, corresponding to 16.8% of RS patients with PKU, 19 were retrieved for analysis. Of these, only two sought to obtain therapies other than metabolic formula. In all the other 17 cases, prior treatment requests had been granted by the State Department of Health. Defendants included the State (n = 19), the Union (n = 1), and municipalities (n = 4). In 18/19 cases, the courts ruled in favor of the plaintiffs. Violation of the right to health and discontinuation of State-provided treatment were the main reasons for judicial recourse. Unlike other genetic diseases, patients with PKU seek legal remedy to obtain a product already covered by the national pharmaceutical assistance policy, suggesting that management failures are a driving factor for judicialization in Brazil. © 2015, Associacao Brasileira de Pos - Graduacao em Saude Coletiva. All rights reserved.


De Ugalde C.M.,Grande Rio University | Da Costa Braga A.,Federal University of Rio Grande do Sul | Rigatti D.,Centro Universitario Ritter dos Reis | Zampieri F.L.,University Federal da Fronteira Sul
SSS 2015 - 10th International Space Syntax Symposium | Year: 2015

Porto Alegre, Brazil, was one of the cities where the World Soccer Championship took place in 2014. Like in the other ones, authorities listed a number of decisions to be taken in order to better host thousands of tourists that would be in town not only to watch the games but also to enjoy the city and regional attractions. One of the main aspects to be improved was urban mobility. It was intended by authorities that all journeys should be easy for residents and tourists. Solutions towards straighter paths linking hotspots and attractors, like the airport, bus stations, soccer stadium, restaurants and pubs, hotels, parks and historical areas should be searched by urban planners. Thus, the road system conditions should be evaluated regarding to quickness, safeness and comfort for drivers and passengers. A basic aspect on mobility in cities issue is the urban grid accessibility. The purpose of the research was to discuss the situation in Porto Alegre before the sports event and the effects on accessibility and potential movement caused by the modifications and increments on the grid prescribed by planners and authorities for the World Cup. Seven infrastructure projects in different places were selected for the intended evaluation. Potential co-presence among local population and tourists was analyzed from the results of an overlay between the main street grid, emerged on the spatial configuration, and the specific roads and streets that were potentially coursed by visitors and tourists, in the sense that they could have increased social and economic opportunities as well as cultural exchange during the days of the event. Space syntax measures like step depth, global integration, and choice, were applied not only to evaluate the accessibility but also to identify the potential main routes chosen by tourists and citizens to move from one attractor to another. On one hand, results allowed the conclusion that those infrastructures didn't affect significantly the grid accessibility of Porto Alegre as a whole, although the integration core incorporated some important spaces as consequence of the modifications on connections. On the other hand, the potential routes of movement among different places of interest match with choice foreground network, what suggests that there was a considerable chance of co-presence between Porto Alegre citizens and strangers during the World Cup.


Reolon L.A.,Federal University of Rio Grande do Sul | Reolon L.A.,Centro Universitario Ritter Dos Reis | Martello C.L.,Federal University of Rio Grande do Sul | Schrank I.S.,Federal University of Rio Grande do Sul | Ferreira H.B.,Federal University of Rio Grande do Sul
PLoS ONE | Year: 2014

The characterization of the repertoire of proteins exposed on the cell surface by Mycoplasma hyopneumoniae (M. hyopneumoniae), the etiological agent of enzootic pneumonia in pigs, is critical to understand physiological processes associated with bacterial infection capacity, survival and pathogenesis. Previous in silico studies predicted that about a third of the genes in the M. hyopneumoniae genome code for surface proteins, but so far, just a few of them have experimental confirmation of their expression and surface localization. In this work, M. hyopneumoniae surface proteins were labeled in intact cells with biotin, and affinity-captured biotin-labeled proteins were identified by a gel-based liquid chromatographytandem mass spectrometry approach. A total of 20 gel slices were separately analyzed by mass spectrometry, resulting in 165 protein identifications corresponding to 59 different protein species. The identified surface exposed proteins better defined the set of M. hyopneumoniae proteins exposed to the host and added confidence to in silico predictions. Several proteins potentially related to pathogenesis, were identified, including known adhesins and also hypothetical proteins with adhesin-like topologies, consisting of a transmembrane helix and a large tail exposed at the cell surface. The results provided a better picture of the M. hyopneumoniae cell surface that will help in the understanding of processes important for bacterial pathogenesis. Considering the experimental demonstration of surface exposure, adhesion-like topology predictions and absence of orthologs in the closely related, non-pathogenic species Mycoplasma flocculare, several proteins could be proposed as potential targets for the development of drugs, vaccines and/or immunodiagnostic tests for enzootic pneumonia. © 2014 Reolon et al.


Sartori D.J.,Federal University of Rio Grande do Sul | Leivas P.G.C.,Centro Universitario Ritter dos Reis | de Souza M.V.,Federal University of Rio Grande do Sul | Krug B.C.,Federal University of Rio Grande do Sul | And 2 more authors.
Ciencia e Saude Coletiva | Year: 2012

Court-ordered access to high-cost drugs for rare genetic diseases, such as Fabry Disease (alpha-galactosidase-A deficiency), is a growing phenomenon as yet lacking systematic study. An observational, cross-sectional and retrospective study was conducted to characterize the lawsuits related to access to treatment for Fabry Disease by Enzyme Replacement Therapy in the State of Rio Grande do Sul prior to 2007. The study identified 13 lawsuits and 17 plaintiffs, 11 requesting alfa and 6 betagalsidase. The State of RS, the Federal Government, and 5 municipalities figured as defendants, in the form of joinder of parties or otherwise. There were 13 requests for interlocutory relief of which 12 were granted, and 2 sentences were handed down, both favorable. "Risk of death" was alleged by doctors in 4 prescriptions and by lawyers in the 13 lawsuits. The data suggest the lack of discussions combining aspects of medical efficacy and safety, cost-effectiveness, economic impact, and legal and constitutional arguments, which requires a specific policy for rare genetic diseases to standardize access to treatment.


PubMed | Secretaria Estadual da Saude do Rio Grande do Sul, Hospital Materno Infantil Presidente Vargas, Centro Universitario Ritter dos Reis and Federal University of Rio Grande do Sul
Type: Journal Article | Journal: Ciencia & saude coletiva | Year: 2015

Treatment of phenylketonuria (PKU) includes the use of a metabolic formula which should be provided free of charge by the Unified Health System (SUS). This retrospective, observational study sought to characterize judicial channels to obtain PKU treatment in Rio Grande do Sul (RS), Brazil. Lawsuits filed between 2001- 2010 and having as beneficiaries PKU patients requesting treatment for the disease were included. Of 20 lawsuits filed, corresponding to 16.8% of RS patients with PKU, 19 were retrieved for analysis. Of these, only two sought to obtain therapies other than metabolic formula. In all the other 17 cases, prior treatment requests had been granted by the State Department of Health. Defendants included the State (n = 19), the Union (n = 1), and municipalities (n = 4). In 18/19 cases, the courts ruled in favor of the plaintiffs. Violation of the right to health and discontinuation of State-provided treatment were the main reasons for judicial recourse. Unlike other genetic diseases, patients with PKU seek legal remedy to obtain a product already covered by the national pharmaceutical assistance policy, suggesting that management failures are a driving factor for judicialization in Brazil.

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