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Search Results: 1 - 10 of 23544 matches for " Fernando Ruivo "
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Poderes locais em perspectiva comparada
Fernando Ruivo,Daniel Francisco
Revista Crítica de Ciências Sociais , 2012,
Abstract: “Os romances n o come am como queremos, mas como eles querem”, afirmou Gabriel Garcia Marquez. Similarmente, as nossas vidas nunca decorrem como individualmente as tínhamos pensado, desejado e planeado. Ora, tal como as nossas vidas, também as reformas político-administrativas e as políticas públicas territorializadas n o come am, deve dizer-se, como queremos, isto é, como pensámos, desejámos e planeámos, mas em boa parte como elas querem, como se tivessem, afinal, alguma vida própria, a qual...
Data Mining for Flooding Episode in the States of Alagoas and Pernambuco—Brazil  [PDF]
Heloisa Musetti Ruivo, Haroldo F. de Campos Velho, Fernando M. Ramos, Saulo R. Freitas
American Journal of Climate Change (AJCC) , 2018, DOI: 10.4236/ajcc.2018.73025
Abstract: The increasing volume of data in the area of environmental sciences needs analysis and interpretation. Among the challenges generated by this “data deluge”, the development of efficient strategies for the knowledge discovery is an important issue. Here, statistical and tools from computational intelligence are applied to analyze large data sets from meteorology and climate sciences. Our approach allows a geographical mapping of the statistical property to be easily interpreted by meteorologists. Our data analysis comprises two main steps of knowledge extraction, applied successively in order to reduce the complexity from the original data set. The goal is to identify a much smaller subset of climatic variables that might still be able to describe or even predict the probability of occurrence of an extreme event. The first step applies a class comparison technique: p-value estimation. The second step consists of a decision tree (DT) configured from the data available and the p-value analysis. The DT is used as a predictive model, identifying the most statistically significant climate variables of the precipitation intensity. The methodology is employed to the study the climatic causes of an extreme precipitation events occurred in Alagoas and Pernambuco States (Brazil) at June/2010.
Kaons and pions in strange quark matter
Pedro Costa,Maria C. Ruivo
Physics , 2001, DOI: 10.1209/epl/i2002-00272-8
Abstract: The behavior of kaons and pions in strange quark matter in weak equilibrium, is investigated within the SU(3) Nambu-Jona-Lasinio [NJL] model. This work focuses a region of high densities where the behavior of mesons has not been explored in the framework of this model. It is found that above the density where strange valence quarks appear in the medium, $\rho = 3.8 \rho_0$, a change of behavior of different observables is observed indicating a tendency to the restoration of flavor symmetry. In particular, the splitting between charge multiplets, $K^+, K^-; K^0, {\bar K^0} {and} \pi^+, \pi^-$ decrease and the low energy modes with quantum numbers of $K^-, \bar K^0 {and} \pi^+$, which are excitations of the Fermi sea, are less relevant than for lower densities.
Hospital-Adapted Clonal Complex 17 Enterococcus Faecium Found among Sand Enterococcal Isolates  [PDF]
Daniela Pinto, Marta Ruivo, Peter Vandamme, Maria de F. S. Lopes
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.31010
Abstract: Though poorly studied, sand is an environment with an extended degree of interaction with man. Enterococcal strains can be found in sand but we do not know to what extent these ubiquitous opportunistic nosocomial pathogens isolated from sand carry antimicrobial resistances and virulence traits. In an attempt to fill in this knowledge gap, two distinct types of sand (beach and children playground) were examined concerning composition in enterococcal species, genetic diversity of isolates and abundance of resistance to antimicrobials and virulence traits. Five different species were found, namely Enterococcus faecium, Enterococcus faecalis, Enterococcus hirae, Enterococcus flavescens and Enterococcus casseliflavus. Although genetic diversity was evident, two different E. faecium clones, common to the two types of sand, were detected, suggesting the existence of clones well adapted to this specific environment or from a common source. E. faecium was associated with multiple antibiotic resistances, including to fluoroquinolones and tetracycline that are commonly used by veterinarians and clinicians. Among the multiresistant E. faecium strains from beach sand, two were from sequence type (ST) 442, which belongs to the wide-spread Hospital-adapted clade CC17. They both carried the esp gene and the genomic island associated with CC17. The other virulence factors screened were disseminated among E. faecalis strains, but seldom detected in the other species, evidencing the existence, in these environments, of E. faecalis strains carrying the same virulence factors as the clinical ones. The present work thus stresses the need to follow-up the presence and characterization of enterococcal strains from both beach and children playground sands and of including these environments in the epidemiological global analysis of enterococcal isolates.
Influence of the rainfall in the content of nutrients in litter in agroforestry systems managed with burning and without burning in Amazon  [PDF]
Rosecélia Moreira Da Silva Castro, Maria De Lourdes Pinheiro Ruivo, Jorge Luiz Piccinin, Eraldo Ferreira Rodrigues
Agricultural Sciences (AS) , 2013, DOI: 10.4236/as.2013.411A004
Abstract:

This study evaluated the nutrient content of the litter, testing different treatments with burning and no burning, of the vegetation, to identify which one provides better efficiency in operation and production of nutrients in different seasonal conditions. The study area is located on the property of the family farmer, initially selected by a diagnosis socioeconomic, community Benjamin Constant, in northeastern Para. Litter was collected during two periods: dry season (November) and rainy (March) in 2009. For the collection of litter samples, we used collectors measuring (0.25 × 0.25 m2), which were placed directly on the soil surface. The collected material was stored in paper bags and taken to the laboratory for Chemical Analysis of the Brazilian Agricultural Research Corporation (EMBRAPA), which was determined by analyses of macronutrients (N, P, K, Ca, Mg, Na) and micronutrients (Fe, Cu, Mn, Zn). The highest concentrations of macronutrients were found in N for agroforestry systems with and without burning in two seasons (wet and dry). All macronutrients showed influence of seasonality, which was verified by the wide variation in nutritional behavior. The decreasing concentration of nutrients was presented N > Ca > Mg > Na > K > P in agroforestry system with burning, with maximum values of all nutrients in the rainy season, and N, P, K, Ca, Na in higher concentrations in agroforestry system without burning, and showed only the Mg peak in agroforestry system with burning. The behavior of the concentration of nutrients was opposite to that observed one, for all elements analyzed showed a reduction in the concentrations of nutrients in the dry season. The decreasing concentration of nutrients was presented Fe > Mn > Zn > Cu.

Doen?a do refluxo gastroesofágico e retardo de linguagem: estudo de caso clínico
Machado, Fernanda Prada;Cunha, Maria Claudia;Palladino, Ruth Ramalho Ruivo;
Pró-Fono Revista de Atualiza??o Científica , 2009, DOI: 10.1590/S0104-56872009000100014
Abstract: background: co-occurrence of feeding and language disorders. aim: to investigate possible connections between feeding and language disorders, based on a bio-psychic perspective. method: a clinical-qualitative methodology, developed through a longitudinal study of a clinical case of a three year old boy with the complaint "does not speak or eat" and with a medical diagnosis of gastroesophageal reflux disease. results: the analyzed case was considered emblematic of connections between feeding and language disorders. conclusions: results indicate that there is a relationship between oral language and feeding problems. it is suggested for speech-language therapists who work with language problems to investigate feeding habits, as well as for those who for with the stomatognathic system to investigate the oral language of their patients.
Perspectivas dos pais sobre dificuldades de aprendizagem específicas: um inquérito por questionário realizado no norte de Portugal
Borlido, Catherine Ruivo;Martins, Ana Paula Lou??o;
Revista Brasileira de Educa??o Especial , 2011, DOI: 10.1590/S1413-65382011000300002
Abstract: the purpose of this article is to report on the conclusions obtained from a research conducted to investigate parents' perceptions on specific learning disabilities. participants were 211 fourth grade student's parents. data were collected in a city in the north of portugal, using a questionnaire. results indicate that 1) the vast majority of parents reported having heard or read about the topic of specific learning disabilities; 2) a significant number of parents have no clear understanding of the conditions associated with specific learning disabilities; 3) the majority of parents expressed that they would be very concerned if one of their children were found to have specific learning disabilities; but about half of them have never thought that this kind of situation could happen in their family; 4) fewer parents expressed concerns about underlying social stigmas associated with specific learning disabilities; 5) the overwhelming majority of the parents considered that additional resources should be allocated to those children with specific learning disabilities.
Efeito do envelhecimento cronológico na fun??o pulmonar: Compara??o da fun??o respiratória entre adultos e idosos saudáveis
Ruivo,Susana; Viana,Paulo; Martins,Cristiana; Baeta,Cristina;
Revista Portuguesa de Pneumologia , 2009,
Abstract: introduction: the respiratory system changes with age and understanding these changes helps detect and prevent respiratory dysfunctions in the elderly. aims: this study compares the respiratory pattern in healthy non-smoker adults and the elderly, using lung function testing and expansion of the chest to confirm the effects of aging on lung function. methodology: we used lung function testing to measure forced vital capacity, forced expiratory volume in one second, peak expiratory flow rate and maximum voluntary ventilation. we also measured expansion of the chest. measurements were taken with subjects resting in the dorsal recumbent position with upper body elevated to 45o. statistical analysis consisted of the student t test for independent samples, the non-parametric mann-whitney test with a p <0.05 level, and linear regression analysis, also with a p <0.05 level, to assess correlation between variables studied and age. our population consisted of 35 elderly subjects and 35 adults. 15 of the elderly subjects were male (43%) and 20 female (57%). 16 of the adult group were male (46%) and 19 female (54%). the sample was mapped in terms of age, weight, height, abdominal girth and clinical data, to exclude factors which could distort the results. results: the difference between the two study groups attained statistical significance for all parameters measured. the linear relationship was also significant between age and all parameters and a negative and significant correlation was seen. expansion of the chest in females was the parameter most inversely correlated with age (60.37%). the lung function testing variable with the greatest difference between the groups was peak expiratory flow rate (35.77% in females and 36.17% in males). conclusions: our results show differences in the respiratory patterns of healthy adults and the elderly, suggesting that age impacts on lung function. both male and female elderly subjects had lower lung function testing scores than the ad
Effects of the Regularization on the Restoration of Chiral and Axial Symmetries
Costa, Pedro;Ruivo, M. C.;de Sousa, C. A.
High Energy Physics - Phenomenology , 2007, DOI: 10.1103/PhysRevD.77.096009
Abstract: The effects of a type of regularization for finite temperatures on the estoration of chiral and axial symmetries are investigated within the SU(3) Nambu-Jona-Lasinio model. The regularization consists in using an infinite cutoff in the integrals that are convergent at finite temperature, a procedure that allows one to take into account the effects of high momentum quarks at high temperatures. It is found that the critical temperature for the phase transition is closer to lattice results than the one obtained with the conventional regularization, and the restoration of chiral and axial symmetries, signaled by the behavior of several observables, occurs simultaneously and at a higher temperature. The restoration of the axial symmetry appears as a natural consequence of the full recovering of the chiral symmetry that was dynamically broken. By using an additional ansatz that simulates instanton suppression effects, by means of a convenient temperature dependence of the anomaly coefficient, we found that the restoration of U(2) symmetry is shifted to lower values, but the dominant effect at high temperatures comes from the new regularization that enhances the decrease of quark condensates, especially in the strange sector.
Feeding and eating behaviors in children with autism and typically developing children
Fernanda Prada Machado,Maria Claudia Cunha,Ruth Ramalho Ruivo Palladino
Revista da Sociedade Brasileira de Fonoaudiologia , 2009, DOI: 10.1590/s1516-80342009000300023
Abstract:
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