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Polissacarídeos extracelulares e atividade enzimática das glicosidases no reservatório de Barra Bonita, SP, Brasil
(Universidade Federal de São Carlos, 2006-06-14)
Colombo, Vanessa
;
Vieira, Armando Augusto Henriques
;
https://lattes.cnpq.br/4428377384377272
Release of extracellular polysaccharides can occur from healthy and active cells and has been demonstrated to be an important carbon source for bacteria. In eutrophic environments where large blooms are formed by efficient extracellular polysaccharide producers such as Microcystis aeruginosa and Anabaena spiroides, these organic materials (high molecular weight extracellular polysaccharides) may support planktonic bacterial growth. The aim of this study was to evaluate the extracellular glycolytic enzyme activity during a seasonal cycle and a possible regulation of the corresponding enzymes in response to variation of polysaccharides in Barra Bonita Reservoir. The majority of enzymes exhibited a significant decrease during the dry season (April to September). The content of total dissolved carbohydrates varied from 0.5 to 6.83 mg L-1 and was mainly (92%) constituted by polysaccharides. Phytoplanktonic community showed a marked succession with cyanobacteria typically dominating during the rainy season (Microcystis sp, Microcystis aeruginosa and Anabaena spiroides), whereas diatoms (mostly Aulacoseira granulata) and cryptophytes (Cryptomonas sp) were dominant through the dry season. Four algal blooms were observed during the experimental period, and after each bloom the release of combined carbohydrates was followed by high enzymatic activities, thus the production of extracellular enzymes for microheterotrophic microorganisms was related to the influx of polymeric organic substances. Even the monosaccharides composition of reservoir samples after each bloom roughly revealed the extracellular polysaccharide composition of dominant phytoplanktonic population. Experiments of polysaccharide degradation from Barra Bonita Reservoir and produced by dominant phytoplanktonic organisms (A. granulata e M. aeruginosa) assayed in laboratory conditions had confirmed the interpretation of data measured in field.
Filtração de gases: estudo da deposição de diferentes tortas de filtração em diferentes meios filtrantes
(Universidade Federal de São Carlos, 2006-06-19)
Rodrigues, Karina Bassan
;
Aguiar, Mônica Lopes
;
https://lattes.cnpq.br/0431688649128529
The particle retention inside a filter medium, after cleaning, significantly improves the initial pressure drop during the subsequent cycle, that is, the residual pressure drop. However, the way as these particles accommodate inside the filter isn t still very clear, as well as, its impact on filtering performance. This work aims to verify the spatial disposal of different particles inside filtration media with different properties, in order to study the penetration depth, after cleaning, as well as the particle size variations from the cake-filter interface to the filtration bulk. Moreover, the objective of this research was to verify the relation between particle penetration behavior and other filtration characteristics for each fabric tested, like the development of residual pressure drop, retained and removed mass after cleaning, and removal efficiency. Three different kinds of powder materials were used for the experiments, varying particle size, granulometric distribution and particle shape: fine phosphoric rock dust, with an average Stokes diameter of 3.71 µm, irregular shape and wide granulometric distribution, coarse phosphoric rock dust, with an average Stokes diameter of 14.67 µm, irregular shape and wide granulometric distribution and tapioca flour, with average Stokes diameter of 8.67 µm, almost spherical shaped, and narrow granulometric distribution. It was observed, despite of the filter media heterogeneity, a particle accumulation in the upward layers of the fabric, decreasing as a function of depth. However, the penetration depth, amount of particles and particle diameter didn t vary according to the number of cycles. It was verified that, the polypropylene fabric, which has low values of permeability and porosity, presented lower particle retention values after cleaning, higher residual pressure drop and shorter filtration cycles, what could be associated with a superficial penetration, according to the microscopy tests carried out. The comparison made between treated and untreated polyester needle felts showed a greater retained mass in the untreated fabric, what resulted in a longer filtration cycle during the beginning of the process, making no difference when fine rock or tapioca flour were used. However, the filtration performance was significantly prejudiced during the following cycles, with higher residual pressure drop and lower particle efficiency removal, what turned the fabric less suitable than the other ones. The results showed that the material presenting narrower granulometric distribution and almost spherical shaped had more xiv homogeneous and long filtration cycles, despite of the greater values of retained mass and depth of penetration, what suggests the better accommodation of particles in the filter cake. The increase in the coarse rock particle diameter resulted in a deeper penetration and a greater retained mass, but similar residual pressure drop, with longer filtration cycles, what meant that the cake formed by greater particles offered better filtration conditions and less specific cake resistance. However, the penetration was deeper for the coarse rock, being the penetration intensity similar for the two rock diameters tested. The increase of maximum pressure drop resulted in a greater retained mass and a greater residual pressure drop. However, nothing could be assured about the total amount of particles collected from each analyzed layer, because the average values in each layer were comparable in magnitude. For a higher maximum pressure drop, the penetration was deeper, as well as the specific resistance of the filter cake, resulted from a greater filtration pressure.
Participação dos receptores adrenérgicos Alfa2 do núcleo parabraquial lateral no controle da ingestão de sódio
(Universidade Federal de São Carlos, 2006-06-20)
Andrade, Carina Aparecida Fabrício de
;
Menani, José Vanderlei
;
https://lattes.cnpq.br/1023597870118105
;
https://lattes.cnpq.br/9055280555067656
Water and NaCl intake is strongly inhibited by the activation of α2-adrenergic receptors with clonidine or moxonidine (α2-adrenergic/imidazoline agonists) injected peripherally or into the forebrain and by serotonin and cholecystokinin into the lateral parabrachial nucleus (LPBN), a pontine structure. Serotonergic and cathecolaminergic neurons are present in the projection from AP/NTS to the LPBN and the presence of α2- adrenergic sites in the LPBN has been shown. The aim of the present study was to investigate the possible involvement of α2-adrenergic receptors of the LPBN in the control of water and 0.3 M NaCl intake induced by the treatment with subcutaneous furosemide (FURO, 10 mg/kg of body weight) + captopril (CAP, 5 mg/kg of body weight) and also during cellular dehydration induced by intragastric 2 M NaCl load (2 ml). In addition, the possible interaction between α2-adrenergic receptors and serotoninergic, GABAergic or opioidergic mechanisms in the LPBN to control of water and 0.3 M NaCl intake was also investigated. Male Holtzman rats with cannulas implanted bilaterally in the LPBN were used. Contrary to forebrain injections, bilateral LPBN injections of moxonidine produced a strong and surprising increase in FURO + CAP-induced 0.3 M NaCl intake and a small increase in water intake, without change mean arterial pressure and heart rate or FURO + CAP-induced c-fos expression in forebrain areas related to the control of fluid-electrolyte balance. Prior injections of RX 821002 (α2-adrenergic antagonist, 10 and 20 nmol/0.2 µl) abolished the effect of moxonidine (0.5 nmol) on 0.3 M NaCl intake. Bilateral injections of moxonidine (0.5 nmol/0.2 µl) into the LPBN also induced a strong ingestion of 0.3 M NaCl intake, without changing water intake in rats with increased plasma osmolarity. However, moxonidine into the LPBN in satiated rats not treated with 2 M NaCl produced no change on 0.3 M NaCl intake. The activation of the LPBN α2-adrenoceptors inhibited the LPBN serotonergic inhibitory mechanism involved in the control of water and NaCl intake, and the increase in FURO+CAP-induced sodium intake produced by the activation of the α2-adrenergic receptors in the LPBN was partially dependent on GABAergic or opioidergic mechanisms in the LPBN. In rats submitted to the taste reactivity test to oral infusions of a 0.3 M sodium solution, the blockage serotonergic receptors into the LPBN enhanced positive hedonic taste reactivity patterns. In conclusion, previous and present results indicate opposite roles for α2-adrenergic receptors in the control of sodium and water intake according to their distribution in the rat brain. The α2-adrenergic activation into the LPBN produces a potent increase in hypertonic sodium intake during extracellular and cellular dehydration. These effects of α2-adrenergic activation into the LPBN is possibly due to the inhibitory serotoninergic mechanisms blockage into the LPBN and at least part of these effects is also dependent of an interaction with GABAergic and opioidergic mechanisms into the same area. Finally, the blockade of serotonergic receptors in the LPBN can enhance sodium palatability thus contributing to the increase in sodium intake during cell dehydration.
Estudo das propriedades químicas, elétricas e da microestrutura de filmes de óxidos coloridos crescidos sobre aço inoxidável por processos químico e eletroquímicos
(Universidade Federal de São Carlos, 2006-06-22)
Kikuti, Elaine
;
Bocchi, Nerilso
;
https://lattes.cnpq.br/5930614700886481
;
https://lattes.cnpq.br/6302276979665787
In the present work, it was studied the chemical composition, morphology, structure and semiconductor properties of oxide films coloured by the chemical - CHE and electrochemical processes (triangular current scan - TCS, alternating potential pulse - APP and superposition of ac and dc signals - SPS) before and after a hardening treatment. Oxide films with two distinct values of thickness (~130 nm e ~200 nm) were obtained using the CHE, TCS and APP colouration processes. The SPS process produced oxide films with only one value of thickness (~150 nm). The hardening treatment led to an increase in the thickness values of the oxide films produced by all the investigated processes (CHE, TCS, APP and SPS). Polarization curves showed that the hardening treatment also promotes enrichment in chromium oxide in the oxide films. This was supported by analyses of chemical composition obtained by Auger spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS). Moreover, these analyses also showed that iron and chromium oxides mainly constitute all oxide films, before and after the hardening treatment. By other hand, images obtained by electron transmission microscopy (TEM) revealed that more compact oxide films are produced after the hardening treatment. Patterns of electron diffraction revealed that the oxide films are constituted of nanocrystalline FeCr2O4 spinel oxide, before and after the hardening treatment. The Mott-Schottky plots presented a quite complex behavior with three straight regions for all the oxide films studied. From these plots two distinct flat band potentials were obtained, being one in the passive region (-0,50 V vs. ECS) and other in the transpassive region (0.50 V vs. SCE) of the stainless steel. These flat band potentials are characteristics of iron and chromium oxides, respectively. Besides, two semiconductivity transitions were observed: transition from p-type to n-type (p-n heterojunction) at -0.50 V vs. ECS and transition from n-type to ptype at 0.0 V vs. SCE. Values of band gap energy in the range 2.94 eV - 3.49 eV were calculated assuming direct transitions only for the hardened oxide films produced by the distinct processes.
O discurso da competência para o trabalho e a educação em tempos neoliberais: a história reeditada como farsa?
(Universidade Federal de São Carlos, 2006-06-23)
Zorzal, Marcos Freisleben
;
Castro, Ramon Peña
By the present study we investigated the production and spread of the discourse about competence, as for its repercussions on the education as well on the work in Brazil. In order that, we situated our attention upon the years of the Fernando Henrique Cardoso government period from the 1990 s, pointed by many researchers like the effective implementation of neoliberal economics, social and educational politics in Brazil and in the world. Our thesis, considering the ultraliberals proposals of inexorable transformations to education and work at the final of XXth century, is that these proposals reedit, by the competence discourse, arguments and proposals equivalents to dominants discourses into circumstances of transformation and capitalist crisis, between the XIXth to XXth transition at the industrial society consolidation peak. That moment represented technical, scientific and administrative developments (the model called fordism-taylorism) and the competitive worker market establishment, circumstances that requesting a new workers category, adequate to the newfangled organization, education and productive icons. However, despite of similarity of both discourses in terms of mutations in the work processes and to the role attributed to schooling with market goals, we defend in this research that the ultraliberal argue that the problem of unemployment, social precarization and social exclusion are attribute to worker disqualification or incompetence through presumed contemporary production innovations, actually they dissimulate and legitimate, ideologically, what the own capitalism, in its contemporary structural crisis, unavoidably create. To subside our proposal, we proceed a comparative analysis between the two periods in question, taking as base the reflections of Karl Marx, Antonio Gramsci and Karl Polanyi toward the economic, cultural and educational transformations in the context of supremacy of liberal ideal of self-regulated market about the wide secularized social interests, that is, when the market, factorial component of society, transform the own society in its factorial component. After this, we will proceed, in the context in which it is establish the trade school and the arrival of fordism on the first third part of XXth century, reflections in which we confront analysis of contemporary authors about the Brazilian politic-economic and educational ultra liberation phenomenon. Considering this, the question that guide us and which we intent answer could be formulated in this manner: the competence discourse as imperative to the actual work and education, in a context of technological transformation and structural crisis of capital-work relation, could be reediting discursive elements of the transformations observed at the end of XIXth century, in way to legitimate the actual negative consequences in form of a dissimulation of reality or, in Marxian terms, as a historical farce? The analysis of the two periods of capitalism indicate us that the Hegelian-Marxian postulate of historical repetition become plausible by means of the ultraliberal renascence observed since the end of the XXth century.
Efeitos de um programa de atenção diversificado às mães de alunos severamente prejudicados.
(Universidade Federal de São Carlos, 2006-06-26)
Martins, Morgana de Fátima Agostini
;
Mendes, Enicéia Gonçalves
;
https://lattes.cnpq.br/9425072594458947
The national literature in the field of special education has continually pointed the necessity of research on programs towards attention to the families of persons with handicap. The present research start from the idea that diferent families can have diversified service necessities. This research was outlined to test this hypothesis, and the general objective of the study consisted in developping, evaluate and compare the efects of different contents of a program of attention to the mothers of the severaly handicapped. For the research was used an experimental delineation of multi elements baseline in which, 3 groups of mothers (A, B, C) was submitted to one sequency of three diferent contents in a attention program (Emotional Support S; Information I; and Training Abilities T), with variations in the order of offers of contents for each group. The study involved two stages, denominated as Study 1 and 2. Study 1 counted with the participation of 15 mothers of handicapped children from a special school and had as objectives: a) Identify the necessities of mothers with severelly handicapped children caracterizing aspects like received diagnostic, familiar structure, socialeconomic conditions and demographics, environment organization and routine, psicological conditions to establish gratefully interactions with their children. For this were done individualized interviews that later were tabulated and resulted in a survey of the necessities and potencialities of this mothers in relation to the child with deficiency. The results of this first stage was the identification of the potencialities and necessities of the families that were translated at the three contents for the attenction program and that allowed develop the program with the identified contents (Contents S, I, T). The study 2 had as participants 07 mothers of deficients students (with pre-school age, considered severally handicaped that attended a special school). For the implementation stage were done three groups, with the end to evaluate the efects of different presentation orders of the three contents about the following selected variables:- Comunnication Family-School CFE (measured by a note book); Adesion of the Family to the Service AFA (measured by school frequency registry of the children to the school) and about the development level of the students NDA, (measured by performance evaluations in seven areas of infantile development: cognition, socialization, nutrition, auto-care, motor abilities, courtesy rules and comunnication). The results pointed gains for all seven children at the development level, varying around 10 to 30% in all the areas for the majority of the children (6 in 7), reaching in some areas to 100% of the abilities. In relation to the variable CFE, the number of notes at the family book went from zero to 18 times, in three months, that was the duration time of the attention program. To the variable AFA, the frequency index at school varied from 80 to 100 % to all children. Is discussed at the end the necessity of implementing attention programs for families with children with defficiency, that been fundamented at the necessities of each family, starting with the hypothesis that families have diferent necessities, and that due this need diferent services. As far as the presentation order of contents, the data are suggestive that the most efficient order to the mothers os preschool children would be: Emotional support, information and training of abilities (SIT), to establish empathy and binding, followed by the information offer to increase the understanding about the deficiency, what would favour later on the trainning of abilities to the teaching of their children.
Cultura, política e alfabetização no Brasil: a 'Segunda Campanha de Nacionalização' do ensino (1938-1945)
(Universidade Federal de São Carlos, 2006-06-28)
Dias, Gustavo Tentoni
;
Villa, Marco Antonio
This dissertation provides a reflection about the educational politics that aimed at the teuton-brazilian ethnic group of Santa Catarina, during the period called Estado Novo (1938- 1945), which became known as The Second Nationalization Campaign of teaching. It is claimed that this governmental pedagogic attitude aspired the diffusion of the primary school, which were supported by the state and the federal government, throughout the teuto-brazilian cities, as if it were a vehicle that advertised the nationalist ideals defended by the Brazilian State. Thus, this work investigate the fact that the government concerns were related to a possible territorial fragmentation, seeing that, according to the government, there was a fragile presence of national culture in the south of Brasil or it may me related to a trial to eradicate any cultural trace of the referred ethnical group that could endanger the country with nazi-facist idealisms. To support this argumentation, this dissertation searched for documents and decrees created at the time of Vargas government, besides studyng a bibliography which was previously selected and studying interviews collected from students and locals of the investigated period and place.
Mapeamento de QTLs para características de crescimento e de resistência no cromossomo 14 de bovinos F2 provenientes de um cruzamento Gir x Holandês
(Universidade Federal de São Carlos, 2006-06-30)
Miyata, Marcelo
;
Regitano, Luciana Correia de Almeida
Brazil possesses the largest commercial bovine herd in the world and cattle represents about 43% of agricultural PIB of Brazil. Crossing Bos taurus and Bos indicus species allows the combination of traits of production from the first specie and of rusticity from the second specie for the genetic improvement of the bovines. Due to the economical relevance of livestock in Brazil, the search for regions in the genome that contribute to prodution traits is object of many studies including traits such as meat yield, precocity of growth and many weight measures (eg. birth weight, yearling weight). The endoparasites and ectoparasites have great economical relevance, once the growth losses and production (meat and milk) affect the bovine herd and consequently, the producer and consumer. The objective of this work was to map QTL (Quantitative Trait Loci) for growth traits and for resistance to ectoparasite and endoparasites through the BTA14 scan, using microssatellite markers in a F2 population Holstein x Gyr. The QTL mapping for the trait birth weight (BW) suggested a QTL (P <0.05) at 1 cM from centromere and for the weight at 60 days (P60), a suggestive QTL (P <0.05) was found at 0 cM from centromere. The mapping for resistance to the ectoparasite Boophilus microplus revealed a significant QTL (P<0.01) at 22 cM from centromere but no association was observed for endoparasites. Together, the results found in this work suggest the possibility to map regions of the bovine genome that affect quantitative traits, like growth and resistance, by means of microssatellite markers.
Avaliação do comportamento das elementos Ni, Rb e Se por espectrometria de absorção atômica com forno tubular na chama de aeressol térmico.
(Universidade Federal de São Carlos, 2006-06-30)
Rosini, Fabiana
;
Nóbrega, Joaquim de Araújo
;
https://lattes.cnpq.br/8833989058164529
;
https://lattes.cnpq.br/5754458321462608
In the present work the behavior of the elements Ni, Rb, and Se was evaluated by thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS). The arrangement of the TS-FF-AAS system consisted of a Ni tube located on the burner head of an air / acetylene flame with a ceramic capillary tube connected to it and heated by the flame. The sample was transported towards the capillary heated tube by action of a peristaltic pump, and then transformed in a thermospray that was introduced into the Ni tube. The sensitivity was increased by the complete introduction of the sample in the absorption volume. For all tested elements, the effect of the main parameters on atomization, such as flame composition, observation height, type of carrier stream, flow rate, and sample volume, was investigated. For selenium, the detection limit obtained was 95-fold better than that obtained by FAAS. Notwithstanding, selenium determination was difficult due to the absorption region of this element (λ = 196 nm), that implied in molecular absorption by flame gases and scattering of radiation. Based on prescribed conditions established by a factorial experiment, selenium was determined with accuracy in samples of animal tissues and in two standard reference materials after microwave-assisted digestion using a diluted solution of acid nitric. For Rb, the sensitivity increased 37-fold compared to FAAS, leading to a detection limit of 2.65 µg/L by TS-FF-AAS. On the other hand, Ni is a refractory element and needed special conditions to facilitate the volatilization and atomization processes. Thus, a cloud point extraction procedure was developed. The combination of both TS-FF-AAS and cloud point extraction led to an improvement of 18-fold in detection limit, however Ni determination in biological samples was limited owing to interferences caused by Al(III), Co(II), and Fe(III). These interferences could be solved by adding fluoride to the digests.
Resolubilidade global para operadores diferenciais parciais reais de ordem um
(Universidade Federal de São Carlos, 2006-06-30)
Silva, Maurício Fronza da
;
Santos Filho, José Ruidival Soares dos
;
https://lattes.cnpq.br/6112529384454347
The present work study the global solvability of first order real linear partial diferential operators when the principal part has precisely one equilibrium point. Moreover, examples and counterexamples are presented.
O texto na apropriação da escrita
(Universidade Federal de São Carlos, 2006-07-03)
Giovani, Fabiana
;
Reyes, Cláudia Raimundo
The main objective of this work is to understand the process of acquiring the writing system which children from the outskirts underwent during the literacy period. It was a peculiar situation in which the teacher, by using the enunciation theory as the foundation for her practice, became a researcher and constructed a corpus of analysis from the texts written by the children a material developed without aiming to be transformed into an academic research. The theoreticalmethodological presupposition of this qualitative investigation refers to a tracing paradigm of analysis which was established within the ambit of Human Sciences and enabled an analysis based on the traces present in the children s texts. The search for traces was related to the conditions or context in which the texts were produced, as well as to the set of stable characteristics of the discursive genre and the writing of the words. Consonant with these pillars which guided the sight to the texts is the choice for the theoretical referential mainly represented by Mikhail Bakhtin. From the traces in the texts, it was possible to comprehend that, in addition to the acquisition of the written language itself, there was a significant understanding of other relevant elements of language, such as the discursive genres which are present in our society, especially the written ones. Thus, in the end of the year, the children were shown to achieve autonomy when choosing a genre in an enunciation. Another trace which must be highlighted is the process by which the children manipulated a word and related it to the context in which they were involved. It was possible to observe that the words of others were dialogically reelaborated within my words of others through a process of utilizing different words of others , thus leading to the creation of my own words . In summary, this study provides evidence that carrying out a work aimed to guarantee the right to the written word for everyone is a viable way of establishing a dialog among unique and free subjects who understand, from the first contacts with writing, the meaning and the sense of the word equality .
Preparação e caracterização de pós e filmes finos cerãmicos de titanato de chumbo e estrôncio obtidos por método químico
(Universidade Federal de São Carlos, 2006-07-03)
Leal, Sérgio Henrique Bezerra de Sousa
;
Varela, José Arana
;
https://lattes.cnpq.br/1807399214239200
xvii ABSTRACT In this work it is approached the preparation of ceramic powders and thin films of strontium-doped lead titanate with concentration of strontium varing from 0 to 100% mol, using a chemical method of synthesis, polymeric precursor method (Pechini). This method allows the sythesis in aqueous medium, in ambient atmosphere, using reactants easily available. In this way, the synthesis condicions were optimized in order to elimanate the formation of secondary phases. The powders ceramic treated in different temperatures under ambient atmosphere was studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD), infrared spectroscopy (FTIR), micro-Raman spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM), that allowed the identification of the crystalline phases, lattice parameters and crystallite size. A phase transition from tetragonal to cubic was observed in this system as the stontium concentration increases in the (Pb1-xSrx)TiO3. A pseudo-cubic phase was observed for x=0.5, indicanting the complete solid solubility of the system. Thin films were obtained by using spin coating of the polymeric solution on Pt/Ti/SiO2/Si substrates using a rotation speed of 7600 rpm for 30 s and calcining at 600°C for 4 h. The effect of the substituint ion in the microstructure and morphology of those films was discussed through a systematic and detailed study using XRD, FTIR, micro-Raman spectroscopy, optical microscopy and atomic force microscopy (AFM); where it was verified that addition of strontium in the PT lattice resulted in decrease of avarage grain size of those films.
Conservação in situ de Maytenus ilicifolia Mart. ex Reiss. (Celastraceae) na Floresta Nacional de Irati - PR
(Universidade Federal de São Carlos, 2006-07-04)
Mazza, Maria Cristina Medeiros
;
Santos, José Eduardo dos
;
https://lattes.cnpq.br/8533387365058570
The conservation of biodiversity is a priority and strategic question at world level. During the last decades, the intensive extraction of non-timber species resulted in the loose of biological diversity and degradation of natural forests. The recent expansion of medicinal plants, almost exclusively founded on extractivism contributes to degradation of these species in their natural environment. Maytenus ilicifolia Mart. ex Reiss. ( espinheira-santa ), species from the Sub-Tropical Forests, mainly from the Mixed Ombrophylous Forest (Araucaria Forest), has medicinal properties for treatment of gastrointestinal diseases. It is now listed among the endangered species of the flora of Parana and São Paulo States, in the categories of rare and almost extinct respectively, and has been considered as having priority for protection and sustainable use. The Protected Areas play a fundamental role in the in situ conservation of the biological diversity; however, the composition and importance of the biodiversity distributed in these Areas are not yet well known. There is neither report about in situ conservation of medicinal species in Brazil nor studies about their ecology in the Protected Areas. This study evaluates the phenology, size structure and population dynamics of Maytenus ilicifolia in the Irati National Forest, in order to have basis for its in situ conservation. The Irati National Forest (25°21 S e 50°35 W), a Protected Area of sustainable use, is localized in the municipalities of Fernandes Pinheiro and Teixeira Soares, Parana State. The phenologic study of this species was done in 78 adult individuals, during two years. The intensity of flowering and fructification events were estimated using a scale from zero to four, with 25% in every class. For population size structure, height and diameter were evaluated in five groups of Maytenus ilicifolia between 2004 and 2006, using the Gini coefficient. The dynamics was evaluated using transition matrices for five developmental stages. It was used to estimate the finite growth rate of the population (λ), the stable structure and the reproductive value during ...
Representações de diferentes atores sociais sobre o trabalho: ergonomia e saúde - um estudo de caso.
(Universidade Federal de São Carlos, 2006-07-06)
Bernardino, Mônica Thais Simões Matsukura
;
Truzzi, Oswaldo Mário Serra
;
https://lattes.cnpq.br/5005536921435787
This research is based upon theoretical concepts from Work Ergonomics Analysis, Action-Research and Occupational Health fields. The study approaches the capacitation experience of an Ergonomics Committee at the Brazilian Post-office Company (Empresa Brasileira de Correios e Telegrafos ECT). The objective has been to conceptually comprehend and discuss the possibilities of considering the viewpoint about the work from workers, different hierarchic levels members, and the Ergonomics Comitee in order to elaborate an ergonomics intervention proposal and support the capacitation process. In order to accomplish these goals, different social actors involved with the work developed at the Local Distribution Centers (Centros de Distribuição Domiciliar CDD) such as mailmen, immediate chefs, regional and state managers and central administrators as well as the Ergonomics Committee members have been interviewed and their statements have been analyzed. As result from this analysis it can be inferred that a) the perception about the work reality has a direct relationship with the institutional insertion level of different social actor groups; b) taking in consideration the representation that each social actor group has about the real work performed allows for achieving a broader comprehension on key factors related to work overload and work health harm; c) the Ergonomics Committee s perception on issues related to ergonomics, work and health and the consequent position it has taken, has improved along capacitation process.
A pré-história da linguagem escrita na idade pré-escolar na sociedade letrada: contribuições da teoria histórico-cultural.
(Universidade Federal de São Carlos, 2006-07-06)
Vieira, Rosana
;
Reyes, Cláudia Raimundo
We try, in our work, to analyze if the experience in the scholar society anticipates the process of appropriation of the written language, in its pre-history, in preschool age children. We understand that the scholar society, when promoting the interaction of the child with the writing, in the diverse social situations involving the text carriers, it could anticipate the process of appropriation of the writing during its pre-history, as wrote A.R. Luria. In the elaboration of the written activity, we consider some of the experimental characteristics of the author. We still did a half-structuralized interview with their parents to inquire the mediation cultural context with the writing and the contact with the text carriers, where the children live deeply, in the social situation that they were involved. The results show us that the presence of the text carriers does not guarantee the anticipation of the pertaining periods of training to the pre-history of the writing . However, these carriers, inserted in intentional situations of functional use of the writing, mediated socially, they had taken the child, in the preschool age, to the meaning that accomplishes of the writing in their scholar pre-history context.
ExtraWeb: um sumarizador de documentos Web baseado em etiquetas HTML e ontologia
(Universidade Federal de São Carlos, 2006-07-10)
Silva, Patrick Pedreira
;
Rino, Lúcia Helena Machado
;
https://lattes.cnpq.br/0315640846525832
This dissertation presents an automatic summarizer of Web documents based on both HTML tags and ontological knowledge. It has been derived from two independent approaches: one that focuses solely upon HTML tags, and another that focuses only on ontological knowledge. The three approaches were implemented and assessed, indicating that associating both knowledge types have a promising descriptive power for Web documents. The resulting prototype has been named ExtraWeb. The ExtraWeb system explores the HTML structure of Web documents in Portuguese and semantic information using the Yahoo ontology in Portuguese. This has been enriched with additional terms extracted from both a thesaurus, Diadorim and the Wikipedia. In a simulated Web search, ExtraWeb achieved a similar utility degree to Google one, showing its potential to signal through extracts the relevance of the retrieved documents. This has been an important issue recently. Extracts may be particularly useful as surrogates of the current descriptions provided by the existing search engines. They may even substitute the corresponding source documents. In the former case, those descriptions do not necessarily convey relevant content of the documents; in the latter, reading full documents demands a substantial overhead of Web users. In both cases, extracts may improve the search task, provided that they actually signal relevant content. So, ExtraWeb is a potential plug-in of search engines, to improve their descriptions. However, its scability and insertion in a real setting have not yet been explored.
Abordagem para diagnóstico de problemas em aplicações de E-GOV - um retrato dos municípios brasileiros.
(Universidade Federal de São Carlos, 2006-07-10)
Bittar, Thiago Jabur
;
Silva, Junia Coutinho Anacleto
;
https://lattes.cnpq.br/6200743168568684
In this work, the main theme is to collect data to diagnose problems and formalize solutions in the Brazilian municipal Electronic Government (E-GOV) domain, focusing on G2C (Government to Citizen) at the first moment. In order to do that, this research analyses and relates: the main problems and challenges to promote E-GOV in general terms and in Brazilian cities as well as in cities from all over the world; the Legislation and guidelines of E-GOV project. So, it was developed a methodological approach composed by a group of methods and complementary macro-activities to scale the results understanding up, supporting the building and spreading of a significant, valid and widespread knowledge in this domain. Such macro-activities used to gather the data are: (i) investigating cities information automatically, (ii) contacting the Administrations via a marketing research and (iii) evaluating the sites by inspection in order to validate the diagnosis. Thus, once the problem recurrence is verified and a successful solution is observed, a propitious base of information is configured so that Proto-Patterns can be identified and formalized as a structured and elegant way to document and diffuse the solutions in the context of E-GOV development to cities, relating to the Software Engineering (SE) and Human-Computer Interaction (HCI) domains.
A produção social da cidade. Os discursos legitimadores da segregação sócio-espacial no interior paulista: Ribeirão Preto 1889-1930.
(Universidade Federal de São Carlos, 2006-07-11)
Sousa, Hugo Freitas de
;
Monsma, Karl Martin
Macroinvertebrados bentônicos dos sistemas aquáticos da estação de piscicultura do CEPTA/IBAMA, Pirassununga, SP
(Universidade Federal de São Carlos, 2006-07-21)
Oliveira, Heliana Rosely Neves
;
Strixino, Susana Trivinho
;
https://lattes.cnpq.br/1804083229761186
With the objective to verify the distribution and the taxonomic structure of the benthic macroinvertebrates fauna of water systems (reservoir, fisheries and channels) of the CEPTA/IBAMA (Pirassununga, SP), a study with two types of methodologies was carried out. The samples of the sediment in the reservoir had been carried out with the Ekman-Birge grab, and in the fisheries and the channels with artificial substrate. The assemblages of benthic macroinvertebrates had been analyzed taxonomic and structurally. The larvae of Chironomidae (Diptera) were the main organisms in all the environments. The predominance of Procladius sp. and Djalmabatista pulcher was observed in the two reservoirs. The spatial analysis of the taxa distribution in the depths, pointed out with to major variety of taxa in the less depth regions (< 2m) in the Represa Velha, in contrast of the Represa Nova. At the same time, the average densities of the organisms had been opposing in the two reservoirs, presenting respectively major and lesser values in the intermediate depths (>2<3m). Temporaly, major abundance of macroinvertebrates at the dry season was observed, where major number of individuals occurred, represented mainly for the Procladius sp. and D. pulcher. In the faunistic analysis with artificial substrate, Goeldichironomus maculatus was dominant. There was taxonomic similarity between the assemblages in the artificial substrates in the reservoirs, fisheries and channels. The cluster analysis between the sampling methods, clustering the fauna of the baskets with the artificial substrate in the two reservoirs, and the fauna collected with the Ekman-Birge grab. This result points out with respect to the problematic use of artificial substrate use as a tool to characterize the fauna of a system.
A caminho do rio: um estudo sobre as relações de gênero e meio ambiente entre os pescadores do Alto-Médio Rio São Francisco
(Universidade Federal de São Carlos, 2006-07-27)
Madeira, Thais Fernanda Leite
;
Mancuso, Maria Inês Rauter
;
https://lattes.cnpq.br/3038895593457591