Browsing by Issue Date, starting with "2009-03-04"

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O processo de municipalização do ensino em Itirapina: a experiência de uma década
(Universidade Federal de São Carlos, 2009-03-04)
Moraes, Maria da Graça Zucchi
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Tagliavini, João Virgílio
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https://lattes.cnpq.br/4097489212297431
The goal is to make an assessment of the decentralization process of the elementary school in the city of Itirapina in the State of São Paulo, making a picture of the municipal education as a whole. This process begins in August 1997, by signing the Partnership Agreement between the State Department of Education and the City of Itirapina, transferring a single state school from 1st to 4th grade in the city, manage it for this. This process begins with only one school and, gradually, after just over ten years, the growth of the municipal network is stressed, to read in 2008, four units of basic education, two of them full-time. The interest of this research work is to analyze this whole process in the ten years to understand its contradictions and identify the variables that affect positively or negatively in the development and implementation of decentralized management. To achieve these goals, with the concern and care for the look back is always the case, it was decided to search for both qualitative and some actions were necessary as to raise and examine documents, data showing the characteristics of the municipality, the administration and management. Based on my experience as manager in this process, I was already ahead of the municipal education secretary as the folder during the signing of the agreement and thereafter for one management, this work brings considerations, comparing the concepts and data collected by research, with a look back not only to the local level, but also for broader issues in a broader universe in which many of the phenomena are crucial for defining the local situation. The paper records the sequence of political and administrative acts in the context of educational reforms, bringing to debate the consequences of all this was for the municipality.
Alcance e apreensão de objetos em lactentes com síndrome de Down : impacto da interação organismoambiente
(Universidade Federal de São Carlos, 2009-03-04)
Campos, Ana Carolina de
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Rocha, Nelci Adriana Cicuto Ferreira
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https://lattes.cnpq.br/2035754554780009
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https://lattes.cnpq.br/5292093208120940
The acquisition and the refinement of motor skills have been described to require a reciprocal relationship between organismic and environmental conditions. This interaction is evidenced in studies identifying the impact of intrinsic and extrinsic factors on functional skills such as reaching and grasping objects. Thus, Study 1 was conducted in order to review the research on factors influencing reaching and grasping in infants at risk for developmental delays. The review has shown that few studies have aimed to understand the development of actions performed by Down syndrome (DS) infants, and also that there is a lack of information about these infants abilities to adjust their intrinsic properties to environmental demands. Consequently, two studies have been carried out. Study 2 aimed to describe the kinematic characteristics of reaching movements in 4-6-month-old DS infants and to test the influence of intrinsic factors, namely Down syndrome and gross motor skill level, on reaching and grasping behaviors. Seven infants with DS and seven infants with typical development (TD) were assessed at 4, 5 and 6 months-old. Gross motor skill was assessed by using Alberta Infant Motor Scale (AIMS). Infants were placed in a baby chair reclined 50º from the horizontal. A soft object (12.5 cm in diameter) was presented at infant s midline, shoulders height, and arm s length. The following variables were analyzed: straightness index (SI), mean velocity, movement units, deceleration time and grasping frequency. DS infants demonstrate variability in the age of reaching acquisition. The DS and the level of gross motor skills were found to influence grasping frequency. Faced with a task that did not impose excessive demand, kinematic characteristics of reaching in DS infants were quite similar to typical infants, except for the number of movement units at 5 months, which was higher for DS infants, and for SI at 6 months, which was lower for these infants. On the other hand, grasping frequency was lower for DS infants. In order to understand DS infants ability to reach for and grasp objects of different sizes, Study 3 was carried out. Grasping and kinematic characteristics of reaches performed by the same infants for large and small objects were analyzed. These reaches were recorded during the same experimental procedure of Study 2. The object size has induced kinematic changes in reaches performed by DS infants, what suggests that they are exploring strategies to move. The adoption of variable movement strategies suggests perception of affordances of the objects. Nevertheless, DS infants failed to grasp the object, which may indicate that they need more experience in the task in order to adapt their actions to their intrinsic constraints. The results of this study point to the importance of considering the individual variability and the confluence of multiple factors in the development of reaching and grasping, since the organismic conditions in interaction with the task demands, were found to influence reaching and grasping performance.
Análise de dados longitudinais para variáveis binárias
(Universidade Federal de São Carlos, 2009-03-05)
Rodrigues, José Tenylson Gonçalves
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Candolo, Cecília
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https://lattes.cnpq.br/9942864590854913
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https://lattes.cnpq.br/6344453033829866
The objective of this work is to present techniques of regression analysis for longitudinal data when the response variable is binary. Initially, there is a review of generalized linear models, marginal models, transition models, mixed models, and logistic regression methods of estimation, which will be necessary for the development of work. In addition to the methods of estimation, some structures of correlation will be studied in an attempt to capture the intra-individual serial dependence over time. These methods were applied in two situations, one where the response variable is continuous and normal distribution, and another when the response variable has the Bernoulli distribution. It was also sought to explore and present techniques for selection of models and diagnostics for the two cases. Finally, an application of the above methodology will be presented using a set of real data.
Sensibilização comportamental à cocaína e neuroadaptações na via mesocorticolímbica : interação com ontogênese, estresse e ambiente
(Universidade Federal de São Carlos, 2009-03-05)
Marin, Marcelo Tadeu
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Planeta, Cleopatra da Silva
;
https://lattes.cnpq.br/7920438802539727
We investigated the interaction between ontogeny, stress and environment where the drug is administered on the behavioral sensitization to cocaine and related neuroadaptations. This study was divided in two parts. In the first one we evaluated the behavioral sensitization to cocaine and alterations of glutamate receptors and tyrosine hydroxylase enzyme following repeated cocaine administrations or stress exposure on adolescent rats. These alterations were evaluated from adolescence to adulthood. The results showed that cocaine administration during adolescence produced long-term behavioral sensitization to cocaine until adulthood and increased of GluR1 glutamate receptor subunit in the medial prefrontal cortex. The stress-induced behavioral sensitization was evident during adolescence but did not reach adulthood. In the second part, we evaluated the environmental modulation of behavioral sensitization to cocaine and alterations of CREB and upstream kinases activation in adult rats. The results showed that the expression of cocaine-induced behavioral sensitization was specific to the environment paired with previous cocaine administration. Moreover, the number of neurons with CREB activation in the nucleus accumbens was increased in sensitized animals and specific to the paired environment. Thus, our results add new findings on addiction related alterations in adolescent animals, its long-term effects and the environmental modulation of cocaine behavioral and neuronal sensitization.
Adaptação cultural e avaliação dos parâmetros psicométricos da versão brasileira da Need for Recovery Scale
(Universidade Federal de São Carlos, 2009-03-05)
Moriguchi, Cristiane Shinohara
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Coury, Helenice Jane Cote Gil
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https://lattes.cnpq.br/8631547579695270
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https://lattes.cnpq.br/4884773940352714
OBJECTIVE: To translate and culturally adapt the Need for Recovery Scale (NFR) to Brazilian Portuguese and to assess the psychometric properties of the Brazilian version among industrial workers. METHODS: The translation process followed a guideline for cultural adaptation of questionnaires, which included the stages of translation, synthesis, back-translation, committee review and pretesting. The NFR Portuguese final version (Br-NFR) was evaluated regarding reliability by tests of stability (n=52) and internal consistency (n=192); convergent validity by simultaneously assessment with other instruments: the Borg Scale (n=59); the Chalder Fatigue Questionnaire (n=57) and 3 subscales of the SF-36 (n=56). RESULTS: Stability and internal consistency achieved the criterion for a reliable measure (ICC=0.80 and Cronbach s α =0.87, respectively). The convergent validity between Br-NFR and other instruments also showed good results: Borg Scale (r=0.64); Chalder Questionnaire (r=0.67); SF-36 subscales: Vitality (r=-0.84), Physical Functioning (r=-0.54), and Role- Physical (r=-0.47). CONCLUSIONS: The Br-NFR revealed to be a reliable instrument to evaluate work-related fatigue symptoms in industrial workers. Furthermore, it showed significant and good correlations with accepted instruments in the field like the Borg Scale, the Chalder Questionnaire and SF-36 Vitality subscale, providing support for the validity of the scale.
A dimensão de gênero na análise sociológica de desastres: conflitos entre desabrigadas e gestoras de abrigos temporários relacionados às chuvas
(Universidade Federal de São Carlos, 2009-03-05)
Siena, Mariana
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Valêncio, Norma Felicidade Lopes da Silva
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https://lattes.cnpq.br/7161606146208875
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https://lattes.cnpq.br/0223897912354111
The increase of extreme events related to rains, added to a vulnerable territory insertion of the poorest, generated an increase in the number of homeless across the country. Homeless are those whose home-use buildings suffered damage and / or were destroyed, causing the disintegration of private living space. Among the actions of Civil Defense in a disaster, the priority rehabilitation is the organization of temporary shelters for the homeless families. In a circumstance in which climate change may cause an increase of extreme events related to rainfall, the vulnerability of poor populations tends to grow. It follows then, the need of the improvement of this public service. Considering this, the general goal, is a sociological analysis on the logic by which the measure of Civil Defense has been operating and coordinating the various agencies and the priority actions, such as welfare, health and others. As specific goal, this project aims to focus on the cut of gender, comparatively analyzing the management challenges of shelter, from the perspective of women in position of command and of those who were sheltered. It is considered that the comparative analysis have relevance in the promotion of adjustments in public policies that require integrated activity of various agencies. It is expected that the qualitative research - from a literature, documentary and field review, and from the collect of oral reports, direct observation and photos - provides grants for public management including the theme of emergency with the promotion of citizenship.
Labrundinia Fittkau, 1962 (Diptera: Chironomidae: Tanypodinae: Pentaneurini) : taxonomia e história natural de espécies do estado de São Paulo
(Universidade Federal de São Carlos, 2009-03-05)
Silva, Fabio Laurindo da
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Gessner, Alaíde Aparecida Fonseca
;
https://lattes.cnpq.br/8465752836529703
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https://lattes.cnpq.br/5197844316578286
The aim this work was study species Labrundinia Fittkau, 1962 (Diptera: Chironomidae: Tanypodinae: Pentaneurini) at São Paulo State. This taxon is commonly cited in ecological studies, always in generic level. In the Neotropical region are known 10 species, however none specifically mentioned for Brazil. The sampling followed the conventional methods of benthonic studies. In laboratory the larvae were kept alive to obtain the three development phases: larva, pupa and adult. The results allowed the identification of five species*, four of which are new species and the first record of Labrundinia tenata Roback (1987) for Brazil. The species are described with their respective diagnoses. Information about species natural history of genus is presented and propels for the identification keys, for the different stages of life, are given.
Síntese e caracterização de nanocompósitos magnéticos e sua aplicação na despoluição de águas
(Universidade Federal de São Carlos, 2009-03-05)
Mourão, Henrique Aparecido de Jesus Loures
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Oliveira, Cauê Ribeiro de
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https://lattes.cnpq.br/5321313558714462
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https://lattes.cnpq.br/0164113832193042
The development of new materials should seek to products whose properties are integrated to enable that processes of interest are implemented efficiently. Thus, in the search for new heterogeneous catalysts, a challenge is integrate efficiently the catalytic activity with the ability to manipulate, separate and retain the structure from the reaction medium. Thus, this work proposed to the synthesis of catalysts based on semiconductors associated to ferrites, tailoring a nanocomposite. In order to obtain this, ferrites CoFe2O4 e Fe3O4 were synthesized through different methods. It was observed higher stability of the ferrite CoFe2O4 by the polymeric precursor method, while by the hydrolytic sol gel method only the ferrite Fe3O4 could be obtained. Following, TiO2-coated CoFe2O4 (TiO2/CoFe2O4) nanocomposites were synthesized in different weight proportions of CoFe2O4:TiO2 and also the SnO2/CoFe2O4 nanocomposites in the 56:44 weigh proportion, both by the polymeric precursor method. The nanocomposites TiO2/Fe3O4 and SnO2/Fe3O4 were synthesized by the hydrolytic sol gel method, in weigh proportion of 56:44 (Fe3O4:TiO2 or Fe3O4:SnO2). TiO2 nanocomposites showed surface area increase, due the higher surface roughness obtained by heterogeneous nucleation of TiO2 nanoparticles on ferrites surfaces. In SnO2 nanocomposites, the homogeneous nucleation of SnO2 nanoparticles also occurred. Also, it was observed higher photoactivity of the nanocomposites obtained by the polymeric precursor method due to the high crystallinity of these materials. The kinetic evaluation of the Rhodamine B photodegradation using the synthesized nanocomposites showed a pseudozero order reaction regarding to Rhodamine B. Finally, SnO2 nanocomposites (SnO2/CoFe2O4 e SnO2/Fe3O4) showed photocatalytic activity, being this result important since it was not reported yet in the literature.
Influência de fatores intrínsecos e extrínsecos na motivação de indivíduos adultos com seqüelas de lesões neurológicas
(Universidade Federal de São Carlos, 2009-03-06)
Oliveira, Sabrina Ferreira de
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Reis, Maria de Jesus Dutra dos
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https://lattes.cnpq.br/9014420022437077
Motivation is usually defined as an inner strength or will, followed by an action towards a goal. Its importance to rehabilitation is established by its positive relation with better and faster functional recovery. Individuals with pathologies or injuries in the Central Nervous System may present motivational disorders. Apathy is the most common and the least intense motivational disorder. The general purpose of this research is to investigate the factors which would distinguish motivated people with physical disability from those demotivated, by using apathy as a reference of demotivation. The study was conducted in two studies. The first one, dealing with the cultural adaptation of the Apathy Evaluation Scale, and the second using all the tools selected to identify intrinsic and extrinsic factors that would influence the participants´ motivation. 14 participants were selected for the first study and 51 for the second, together with their caretakers. The participants were 33 to 89 years old and presented stroke sequelae, traumatic brain injury, Parkinson's disease and Alzheimer's disease. The caretakers responded to the Apathy Evaluation Scale and the patients completed the general characterization questionnaire, WHOQol-100 World Health Organization Quality of Life (WHOQOL-100) scale and Beck Depression Inventory (BDI). The data was analyzed through SPSS, with descriptive statistics, Pearson correlation test and Student´s t-test (regressive and inferential). The analysis of the Brazilian version of the Apathy Evaluation Scale, obtained in the first study, revealed its suitability to be used in the sample of this investigation. The final results demonstrated that Apathy is significantly correlated with age, degenerative diseases, right hemisphere lesions, general comorbidity, lack of energy, lack of leisure opportunities, and also lack of capacity to undertake physical and cognitive daily activities, and low self-esteem. Differences in self-esteem, work capacity, quality of sleep, day-to-day energy, personal relationship, leisure and physical domains were detected between apathetic and non-apathetic participants. Self-esteem, presence of general comorbidity and work capacity were the main factors to predict apathy. Therefore, both, intrinsic and extrinsic features determine apathy in this kind of population. Drug intervention and familiar guidance may help the rehabilitation professionals increase motivation to functional rehabilitation, which may lead patients to physical, psychological and social benefits.
A fórmula de aproximação de Baouendi -Treves
(Universidade Federal de São Carlos, 2009-03-06)
Liboni Filho, Paulo Antonio
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Hounie, Jorge Guillermo
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https://lattes.cnpq.br/7302904386484949
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https://lattes.cnpq.br/2231598823550786
Let be a N-dimensional smooth manifold. Consider a locally integrable structure L of CT with fiber dimension 1 ≤ n < N and set m = N − n. We say that L is locally integrable if, for every p ∈ , there is a neiborhood Up and m smooth functions Zj : U −→ C, 1 ≤ j ≤ m such that 1. Zj is anihilated by every local section of L; 2. dZ1(p) ∧ . . . ∧ dZm(p) 6= 0. The main result in this text is the Baouendi-Treves Approximation Theorem, that states that every distribution solution u of the sections of L is locally the limit of a sequence of smooth solutions of the form Pk ◦ Z, where Z = (Z1, . . . ,Zm) and Pk is a m-variable polynomial.
Especificação do tamanho da defasagem de um modelo dinâmico
(Universidade Federal de São Carlos, 2009-03-06)
Furlan, Camila Pedrozo Rodrigues
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Diniz, Carlos Alberto Ribeiro
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https://lattes.cnpq.br/3277371897783194
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https://lattes.cnpq.br/5846573017748863
Several techniques are proposed to determine the lag length of a dynamic regression model. However, none of them is completely satisfactory and a wrong choice could imply serious problems in the estimation of the parameters. This dissertation presents a review of the main criteria for models selection used in the classical methodology and presents a way for determining the lag length from the perspective Bayesian. A Monte Carlo simulation study is conducted to compare the performance of the significance tests, R2 adjusted, final prediction error, Akaike information criterion, Schwarz information criterion, Hannan-Quinn criterion, corrected Akaike information criterion and fractional Bayesian approach. Two estimation methods are also compared, the ordinary least squares and the Almon approach.
Determinismo, Indeterminismo e Behaviorismo Radical
(Universidade Federal de São Carlos, 2009-03-06)
Laurenti, Carolina
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Cass, Mark Julian Richter
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https://lattes.cnpq.br/6549114665097353
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https://lattes.cnpq.br/0100195996020169
One of the objectives of this essay is to argue that determinism and indeterminism remain central themes of the science of psychology especially the Analysis of Behavior and its philosophy, Radical Behaviorism. At first blush, our attention seems to be misplaced, for Skinner declares himself to be a determinist. However, closer examination suggests that Skinner's writings warrant an indeterminist reading of his philosophical and scientific commitments. Accordingly, a "tension" between the determinist and indeterminist theses, underlying Skinner's writings, calls for analysis. One way of shedding light on this "tension" is to turn to philosophy. However, philosophy offers numerous definitions, as well as different levels of analysis of determinism and indeterminism. Because of this, another objective emerged: the development of an analytic tool for examining determinism and indeterminism, not only in Skinner's behaviorism, but also in philosophy. A heuristic tool was devised, based on considerations suggested by philosophy of science, which consists in three levels of analysis of determinism and indeterminism to wit, conceptual, ontological and epistemological. By means of this, some confusions and logical difficulties, often present in discussions about determinism and indeterminism, were elucidated. Some questions which arise from the examination of Skinner's work can also be addressed: Is determinism a necessary condition of science, or can there be indeterminist sciences? Are determinism and causality synonyms? Or can there be non-deterministic causation or non-causal determinism? Is determinism a condition of prediction and control? Does indeterminism imply caprice or chaos? Is probability and index of ignorance of some of the causes of behavior, or is it a constitutive element of behavior per se? Based on philosophical analyses of determinism and indeterminism, texts which broach related concepts and theses, from every decade of Skinner's intellectual production, are considered. This historical approach enables us to identify possible tendencies, regarding determinism and indeterminism, in Skinner's work. Moreover, it allows us to offer a brief history of Radical Behaviorism, interpreting its past, reconstructing its present, and indicating its future possibilities.
Estudo das eletrodeposições de lítio e gálio sobre Au(111) e HOPG utilizando líquido iônico como eletrólito
(Universidade Federal de São Carlos, 2009-03-06)
Gasparotto, Luiz Henrique da Silva
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Bocchi, Nerilso
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https://lattes.cnpq.br/5930614700886481
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https://lattes.cnpq.br/2649423643904707
In the present work, the electrodepositions of lithium and gallium on Au(111) and HOPG (highly oriented phyrolytic graphite) were studied using ionic liquids (ILs) as electrolytes and employing the following techniques: cyclic voltammetry, chronoamperometry, scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), secondary ion-mass spectrometry (SIMS), and in situ scanning tunnelling microscopy (in situ STM). Initially, it was found that the residual water drastically decreases the electrochemical window of the ILs 1-butyl-3- methylimidazolium tetrafluoroborate [(BMIm)BF4] and 1-butyl-3-methylimidazolium hexafluorophosphate [(BMIm)PF6]. Then, in situ STM measurements showed that the organic cation plays a fundamental role on the behaviour of Au(111) in the pure ILs 1-butyl-3-methylpyrrolidinium bis trifluoromethylsulfonil)imide [(BMP)Tf2N] and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonil)imide [(EMIm)Tf2N]. The cyclic voltammograms for gallium deposition on Au(111) suggested that the Au-Ga alloy formation precedes the bulk gallium deposition and in situ STM images revealed a thin gallium layer on Au(111) at the open circuit potential. The thickness of the gallium film potentiostically obtained was 40 nm, at least. Gallium nucleation on HOPG did not follow any of the applied nucleation mechanism (instantaneous or progressive) and, for short-time potential pulses, gallium spheres were formed predominantly along the HOPG step edges. The voltammogram for the lithium deposition on Au(111) revealed an UPD process, solid electrolyte interface formation, lithium bulk deposition and its oxidation. The SEM micrographs showed that the lithium electrodeposit is composed by polygonal crystals and the SIMS analysis confirmed that the deposit was metallic lithium. The lithium nucleation on Au(111) did not follow any of the applied nucleation mechanisms neither and the in situ STM images showed that the lithium UPD process occurs via layer-by-layer with the formation of three monolayers.
Influência das inundações na distribuição de espécies arbóreas ao longo do Rio Massaguaçu (Caraguatatuba, São Paulo, Brasil), e potencial alelopático de Annona glabra L
(Universidade Federal de São Carlos, 2009-03-06)
Matsumoto, Reginaldo Sadao
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Lima, Maria Inês Salgueiro
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https://lattes.cnpq.br/2171993314203162
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https://lattes.cnpq.br/9384309905070395
The vegetation of blind estuary of the Massaguaçu River in Caraguatatuba, is subject to periodical flooding. This flooding regime may be an important factor over the local tree composition and distribution. The present research purpose was to determine the tree-shrub species distribution on the Massaguaçu river estuary, related to flooding regime. Upstream, from the river mouth, 5 flooded vegetation banks were established (A, B, C, D, e E). Eighty plots (5x5m) were sample drew in each field, in which, quantitative and qualitative tree shrub (PBH>10 cm) species were sampled. Annona glabra L basal perimeter and height measurements were collected. Central plot deep were measured, as well the estuary daily water level. The rainy season estuary open-close cycle are more frequent and have a higher average maximum level. Caraguatatuba total field have a 2.216 nat.ind.-1 Shannon diversity index and 30 species total richness. The most richer was the Myrtaceae family. A and C plots were more similar among themselves as well D and E plots. In despite of species adaptations to periodic flooding, higher richness was found in lower flooded ranges. The species distribution per average deep plots shows Annona glabra, Dalbergia ecastophyllum, Hibiscus pernambucensis and Garcinia gardneriana occupying deeper sites than other species. A. glabra biometric prameters indicate higher and more thin trees, when in association with other species, than living in mono specific groups. The water depth regime limits the species distribution and composition in Massaguaçu river estuary. The A. glabra distribution seems to be related to their flooding adaptations and to their colonization in less competitive spots.
Uma abordagem cognitiva do riso
(Universidade Federal de São Carlos, 2009-03-06)
Verrone, Alessandro Bender
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Teixeira, João de Fernandes
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https://lattes.cnpq.br/8864985279295912
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https://lattes.cnpq.br/1004548939803796
The research is an investigation about the phenomenon of the Laugh, from the studies of Henri Bergson and Sigmund Freud up to today's research on neuroscience, gelotology and several other studies on human behaviour. In order to better understand the Laugh, an accurate evaluation of the book " Laughter: An Essay on the Meaning of the Comic", by Henri Bergson is made as an attempt to better understand the main considerations set by the author, in his interpretation of this phenomenon as a Social Gesture and all the implications originated by such fact. In the second chapter of this study, Jokes and their Relation to the Unconscious , by Sigmund Freud, are closely analyzed in details, comparing Freud s and Bergson s approaches and analyzing the mechanisms proposed by Freud concerning the way the Joke works, pointing out the reasons why they would be told to others. The reading and analysis of this book are directed specifically to the study of the Laugh, not approaching any other aspect, relevant to the reading of Freud s work as a whole, which however, would deviate the focus of this work. All the efforts were dedicated to the comprehension of the jokes mechanisms studied by Freud as well as ways to obtain pleasure through them. At the end updated research is verified, such as the one from Richard Wiseman s Laugh Laboratory, that accomplished a worldwide research selecting which would be considered the funniest jokes by people. Also as an object of study there is the role of the mirror-neurones, an important finding that allows a clearer vision about primates and human s social behaviors. The possibility of the laughter to be a behaviour similar to the grooming of the primates is also raised, since both would be related to the exchange of pleasure among individuals viewing the benefit of the group. Following this line, a study is presented defining the laughter as a specific characteristic of the male gender, who would use this feature as an approach aiming at attracting a mate. There isn't a conclusive result, there is not a final word about the laughter because it is clear that in many circumstances the term ranges similar phenomena, which are not exactly the same. In the same way that there is multiple laughter, there are multiple areas that study the distinct variations of the Laugh.
Sistemas parabólicos : aplicações em fluidos com capilaridade trifásico
(Universidade Federal de São Carlos, 2009-03-06)
Toon, Eduard
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Kondo, Cezar Issao
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https://lattes.cnpq.br/0900348462714778
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https://lattes.cnpq.br/5171484988159554
We study degenerate parabolic systems arised in three-phase capillary flows in porous media under a pressure control at the inflow and outflow boundaries. We perform a mathematical study of such systems for a class of linear capillarity pressure functions. To this end, a theory of nondegenerate parabolic approximations is developed. It has been proved the unique solvability of the initial boundary problems.
Educação Moral e Cívica na ditadura militar : um estudo de manuais didáticos
(Universidade Federal de São Carlos, 2009-03-06)
Almeida, Djair Lázaro de
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Tagliavini, João Virgílio
The purpose of this essay is to investigate, through the analysis of didatic manuals, the meaning of the subjects Moral and Civic Education and Brazil s Social and Political Organization during Brazil s military dictatorship post 1964. This analysis was completed with school writing register studies. To understand the discussion which drove the educational policy during the military dictatorship, 20 didactic manuals and their references were analyzed. Used as a primary source, the material served to point out specific arguments attributed to military rule. These arguments were submitted in this work to the materialist conception of history. In an attempt to reveal the influence of the named manuals as supporting arguments in accordance with the military regime, an attempt to understand how the persuasive reasonings became joined to the ideological justifications from the institutional discourse. In this process, new disciplines (or subjects), reorganizing existing moral and civic values, were used as support for the national mystic returned to the security and development binomial. It was then shown the authoritarian position of the moral and civic education during the military regime further proving how students were instructed through the use of stereotypes and idealizations.
Morfologia, conservação e ecofisiologia da germinação de sementes de Psidium cattleianum Sabine
(Universidade Federal de São Carlos, 2009-03-09)
Silva, Antonio da
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Perez, Sonia Cristina Juliano Gualtieri de Andrade
;
https://lattes.cnpq.br/9973185407856723
Psidium cattleianum has great potential for animal and human food, for multiple uses of wood and for recovery of degraded areas. Due to its economic importance and to the lack of information on seed germination and conservation, this study aimed to find the morphology of fruits, seeds, seedlings and young plants and to establish the presence or absence of dormancy. Furthermore, studies have been conducted relating to the conservation of seeds, the germination responses under different temperatures, qualities of light and humidity levels of the substrates. All these studies focus to generate knowledge that can help to support conservation projects, management and restoration of altered and/or protected areas. By the results, it was found that seeds and fruits showed had little biometric variation and the greatest variation occured in number of seeds per fruit. The seeds showed tegumentary dormancy, the germination is hypogeal and the seedlings are cryptocotylar. Seeds immersed in water at room temperature in laboratory, proved germination pending quicker 20- 30oC in white light. The seed immersed in sulfuric acid during ten, 20 and 25 minutes, subjected to temperatures of 20-30oC under white light, showed higher germination rate. The placing of the seeds in waterproof packed and stored in natural environment in the laboratory or in a dry chamber, as well as the seeds packed in semi-permeable package and stored in cold chamber, were suitable for the preservation during 1,107 days and this fact, associated with little variation on the moisture content allowed to classify them as orthodoxe ones. The test of electrical conductivity with scarified seeds in the sulfuric acid during 25 minutes was not efficient to evaluate its physiological quality. The highest values of seed germination and speed rate were obtained at the temperature of 20-30oC under white light. Regardless of temperatures, the seeds showed drastic reduction in speed and germination in absence and presence of far red light. The seeds are positive preferential photoblastic. It is assumed that seeds germination is better under light natural conditions. The highest values of seed speed and germination were obtained, under white light regardless of seed age. The highest seed speed and germination were obtained at 20-30oC, under white light in 15 mL of water, as well as 50 grams of sand moistened with six, nine and 12 mL of water.
Eletrodissolução de alumínio em polpa celulósica proveniente da reciclagem de embalagens cartonadas multicamadas
(Universidade Federal de São Carlos, 2009-03-09)
Neves, Fernando Luiz
;
Coury, José Renato
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https://lattes.cnpq.br/7563266192997044
In this work we studied the aluminum electro-dissolution in cellulose pulp from milk and beverage cartons recycling. The objective for this research is to reduce the aluminum particles sizes to values below 300 μm. In the first stage, the process was studied in lab scale using an electrochemical reactor anode made of Titanium recovered with ruthenium oxide (DSA® Ti/Ti0.6Ru0.3O2- De Nora do Brasil) and cathode made of titanium without recovering. In this experiment in lab scale, the electro-dissolution of aluminum presented a first order kinetic reaching 88 to 92% of electrochemical efficiency after 500 minutes. From measurements of particles diameter by optical microscopy it was possible to calculate the total area occupied by the aluminum particles which was quantified by image efficiency. For the lab experiment the image efficiency reached values between 74 and 88%. This first study was conducted in three current density: 250, 320 and 700 A/m2 and during 60, 180, 480 and 960 minutes. After 60 minutes no particles above 300 μm was detected. In the second stage, a pilot electrochemical reactor was designed taking the lab reactor parameters and keeping the same material for anode and cathode. This system was evaluated for current densities of 22, 250 and 270 A/m2 during 120 and 420 minutes. The best result was observed with the application of 250 A/m2 during 420 minutes reaching electrochemical and image efficiency of 60 and 72% respectively. The mechanical resistance for the cellulose pulp was evaluated before and after the electrochemical treatment and it was noted that it affected the freeness in a positive way. Tear, tensile, burst, zero span tensile index and stretch, if compared to non-treated and refined pulp to the same freeness, presented effects positive or negative depending on the current density applied and the treatment time. However, all the measurements for mechanical properties after the electrochemical treatment are in the acceptable level for paper market. The energy consumption was evaluated for the lab and pilot experiment and optimized industrial conditions were simulated. Based on these simulations and on the experiments results, we can conclude that a plant that recycles 50 ton per day of milk and beverage cartons needs 655 kW of electric power to treat all the pulp extracted from these packages using the electrochemical process considering that paper represents 75% (w/w) of milk and beverage cartons composition.
Interação multualista entre morcegos nectarívoros(Chiroptera) e a pata-de-vaca Bauhinia Holophylla Steud. (Fabaceae) em uma área de cerrado: atração e recompensa
(Universidade Federal de São Carlos, 2009-03-09)
Estêvão, Julia Ramos
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Matos, Dalva Maria da Silva
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https://lattes.cnpq.br/4728734263109138
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https://lattes.cnpq.br/2869410150047234
(Attraction and reward of nectar-feeding bats (Chiroptera: Phyllostomidae) by the plant Bauhinia holophylla (Fabaceae) in a Brazilian savanna) In facultative mutualisms, species compete strongly with each other for partners. It is expected that sympatric plant species pollinated by the same guild of animals invest heavily in attracting partners. Thus, we investigated interactions between Bauhinia holophylla and bats to test whether: (1) this plant is visited mostly by bats and if it assures attraction of bats through typically chiropterophilic floral traits; and (2) bats adjust their foraging behavior to the temporal pattern of nectar production by flowers. We worked in a Cerrado area in southeastern Brazil, recording floral visitors and their foraging pattern. We determined nectar production and how its concentration varied throughout the night. Three species of bats were the main legitimate visitors. Bauhinia holophylla floral characteristics followed predictions of the chiropterophyly syndrome: brush format, white color, sweet odor, crepuscular anthesis, nocturnal nectar production and flowers exposed on branches. Bats visited flowers more often at dusk, there were differences in the main hours of overflight, reconnaissance flight and visitation. Solute concentration in nectar was always highest at the beginning of the night and fell gradually thereafter. Bats did not visit more flowers when nectar concentration was higher. We conclude that in this interaction dependence is asymmetric, following patters of other facultative mutualisms, because Bauhinia holophylla depends on bats for its pollination, but bats presumably do not depend on it for food.