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Atividade das enzimas celulase e xilanase durante a decomposição anaeróbia de macrófitas aquáticas
(Universidade Federal de São Carlos, 2010-08-12)
Nunes, Maíra de Figueiredo
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Bianchini Júnior, Irineu
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https://lattes.cnpq.br/0659731944736389
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https://lattes.cnpq.br/3902418392932647
Enzymatic activity during decomposition is extremely important to hydrolyze molecules that are assimilated by microorganisms. During aquatic macrophytes decomposition, enzymes act mainly in the breakdown of lignocellulolytic matrix fibers (i.e. cellulose, hemicellulose and lignin) that encompass the refractory fraction from organic matter. Considering the importance of enzymatic activities role in decomposition processes, this study aimed to describe the temporal changes of xylanase and cellulase activities during anaerobic decomposition of the aquatic macrophytes community located at Óleo Lagoon, placed in Ecological Station of Jataí, Luiz Antonio, São Paulo, Brazil. After a survey of existing aquatic macrophytes, 10 species were indentified in the lagoon. They were collected and bioassays were accomplished in the laboratory. Decomposition chambers from each species (n = 10) were set up with dried macrophyte fragments and filtered Óleo Lagoon water. The chambers were incubated at 22.5oC, in the dark and under anaerobic conditions. Enzymatic activities and remaining organic matter were measured periodically during 90 days. Besides this analysis, pH, humification index and carbon types were evaluated. Initial cellulose and hemicellulose was measured for each species. For all the plants xylanase s activitiy was greater than cellulase activity. The results showed no correlation between organic matter decay and enzyme production. This could have occurred because of lignocellulolytic matrix fibers structural differences and also because of physical, chemical and biological characteristics. The incubations showed a low pH, what agrees with Óleo lagoon characteristics, supporting that aquatic macrophytes decomposition interfers in its physical and chemical characteristics. Egeria najas presented a dissolved organic carbon (DOC) accumulation pattern during its decomposition which differed from the other species. This pattern tends to accumulate humic substances and consequently alters some water characteristics. Besides it, E. najas presented the largest distribution over Óleo lagoon area. Emergent species presented the greater amount of particulate organic matter (POM) accumulated in sediment, configuring the main available substrate to anaerobic microorganisms.
Diretrizes para o processo de projeto de edifícios hospitalares
(Universidade Federal de São Carlos, 2010-08-12)
Oliveira, Edgar Peixoto de
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Novaes, Celso Carlos
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https://lattes.cnpq.br/7340467051481570
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https://lattes.cnpq.br/6630171234124576
This paper aims to propose guidelines for the design process of hospital buildings. To achieve this objective, literature review and case studies were conducted in three architectural firms specializing in projects for hospital buildings. It was possible to see how management is performed in the design process in each of these companies and what are the difficulties and differences between the design process of hospital buildings and design process of other built environments. The Company 1 has been operating for 11 years developing architectural plans for the hospital and residential segments, which contributed to identifying the differences between the design processes of these two segments. The Company 2 has been operating for 3 years coordinating the design process of residential, hospital, shopping and hotels, bringing a vision of the management process. The Company 3 has extensive experience in developing architectural plans for the hospital segment, serving for 32 years exclusively in this segment. The observation of the work of these companies, together with the literature review served as a subsidy for the drafting of guidelines for the design process of hospital buildings, as a contribution to the quality of it.
Caracterização e análise da participação e dos conflitos em uma escola transformada em comunidades de aprendizagem
(Universidade Federal de São Carlos, 2010-08-13)
Pinheiro, Edneia Virginia
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Conti, Celso Luiz Aparecido
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https://lattes.cnpq.br/6967887143687279
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https://lattes.cnpq.br/3295597349119182
The objective of this study is to understand the impact of Learning Communities (LC) in a school unit in relation to participation and the conflicts existing within them, highlighting in particular those aspects which facilitate and hamper the manifestation and resolution of the conflicts. Taking as reference the critical communicative methodology, and based on the communicative action concepts, of Habermas, and dialogicity, of Freire, the principal means of data collection of this research was in-depth interviews, carried out with: the head of the EMEB, the deputy director, a schoolmistress, who had been acting for approximately two years as pedagogical coordinator, and a family member. All the people interviewed were involved in one of the unit s two bodies (School Council or Management Commission). We sought, in this way, to understand the existing relationship between the participation of everyone in the school and in the decision-making processes, in a egalitarian manner, and the occurrence of conflicts, seeking to identify which factors stimulate conflicts and which factors inhibit them, and how they manifest themselves in the relations within the unit and in what way the egalitarian dialogue, present in the decision processes of a LC, impacts on these conflicts. The analysis of the data, which embraced both transformative factors and those that appeared as obstacles to transformation, took the form of a collaboration between the individuals interviewed and the researcher, in order to promote dialogue on the content raised, the themes chosen and the understandings reached, aiming for consensus. We were able to observe that many changes occurred in the school unit following the implementation of the LC proposal. Noteworthy among them is the incorporation of egalitarian dialogue in all the relationships, involving the different bodies of the EMEB. We observed that the existence of conflicts in the unit demonstrates its openness to dialogue, enabling everyone to state their opinions and arguments. Conflict, therefore, has acted as a point of departure in the search for understanding, which is established with the communicative action, the fruit of consensus reached by means of the best arguments. This investigation integrates the research Learning communities: a wager on the quality of learning, on the equality of difference and on the democratization of school management , which envisages four axes of investigation: (1) learning to read and write, (2) dialogic learning practices, (3) formative needs and educational potentialities of the surrounding population, with focus on the working conditions of family members and on the environmental conditions and ways of life in that environment, (4) management and participation of the community in the life of the school.
Administração do 8-OH-DPAT no septo dorso lateral de camundongos submetidos ao labirinto em cruz elevado promove efeito ansiolítico que é revertido pelo pré-tratamento local com WAY100635
(Universidade Federal de São Carlos, 2010-08-13)
Silva, Helvia Arandas Monteiro e
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Souza, Azair Liane Matos do Canto de
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https://lattes.cnpq.br/2352004564367849
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https://lattes.cnpq.br/0234596561772982
Research on anxiety often involves the use of animal models for investigation of therapeutic compounds. Thus, the elevated plus maze (EPM) is one of the most commonly model used in research involving anxiety and it has been validated for rats and mice. Serotonin (5-HT) is a neurotransmitter involved not only in anxiety but also in other disorders. Some reports show that increasing the potency and selectivity of agonists demonstrates that the 5-HT1A receptors are involved in mechanisms of behavioral changes, for example, anxiety. Therefore, the aim of the present study was to evaluate the effects of agonist and antagonist of 5-HT1A receptors, administered intradorsolateral septum in mice exposed by LCE. The behavioral effects were examined by conventional and ethological analysis of the sessions (tripped) test. In experiment 1, the highest dose of the agonist 8-OH-DPAT (10nmol) induced anxiolytic effect, whereas the lowest dose tested (5.6 nmol) did not provide effect. In experiment 2, injection of the antagonist WAY-100 635 (5.6 nmol) did not alter any of the conventional indices of anxiety. In experiment 3, pretreatment with WAY-100 635 (5.6 nmol) reversed the anxiolytic effect of the two doses of 8-OH-DPAT (5.6 and 10nmol). The results showed that the anxiolytic effect promoted by the agonist of 5-HT1A receptors was blocked by local administration of WAY-100 635, the same receptor antagonist.
Desenvolvimento de eletrodo modificado com filme de polianilina e estudo da viabilidade da aplicação analítica para catecolaminas
(Universidade Federal de São Carlos, 2010-08-13)
Barbosa, Nathália Vieira
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Faria, Ronaldo Censi
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https://lattes.cnpq.br/8659496864305621
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https://lattes.cnpq.br/7052464924811586
This work describes the development of a polyaniline (PANI) film modified electrode for determination of dopamine (DA) in pharmaceutical formulation. The electropolymerization of PANI film on platinum electrode was performed by cyclic voltammetry in a solution containing 0.1 mol L-1 aniline monomer and 0.5 mol L-1 sulfuric acid. The study of PANI/Pt electrode electrochemical response for determination of DA was carried out by cyclic voltammetry and differential pulse voltammetry. The DA electrochemical responses was obtained after applying a cathodic pretreatment of the PANI electrode, that consisting in applied a potential of -0.7 V for 3 s before each voltammetric measurements. The DA determination by differential pulse voltammetry, presented a better response in 0.1 mol L-1 phosphate buffer solution at pH 6.5 and using the parameters of scan rate (v), pulse amplitude (a) and pulse increment (ΔEi) of 10 mV s-1, 50 mV and 2 mV, respectively. The calibration curve for dopamine presented linear response in the concentration range between 2.22x10-5 and 3.23x10-4 mol L-1, with detection and quantification limits of 1.80x10-5 and 6.00x10-5 mol L-1, respectively. DA recovery studies fulfilled in pharmaceutical formulation sample using PANI/Pt electrode showed recoveries between 98.0 and 104%. The results obtained with the modified electrode were in agreement with the spectrophotometric method with a relative error of 2.39%. The repeatability of PANI/Pt electrode responses was studied in solution of 1.0 mmol L-1 DA and a relative standard deviation of 2.68% was obtained for ten successive cyclic voltammetry carried out electrode cathodically pretreated before each measurement. The feasibility of analytical application of the proposed electrode for determination of catecholamines was evaluated for the adrenaline, noradrenaline and levodopa. The results obtained showed the applicability of the PANI/Pt electrode. The characterization of the PANI film, performed by field emission gun scanning electron microscopy, showed granular and fibrillar morphology which is a characteristic of PANI.
Síntese e avaliação de sílica tipo M41S contendo cátions CTA em transesterificação catalítica
(Universidade Federal de São Carlos, 2010-08-13)
Fabiano, Demian Patrick
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Cardoso, Dilson
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https://lattes.cnpq.br/2462847535959232
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https://lattes.cnpq.br/6746672472192131
The investments in the biofuel production have increased a lot in the last years mainly because of smaller damages they cause to the environment in comparison with the derived conventional petroleum fuels. The reaction of biodiesel formation is denominated transesterification and, nowadays that reaction happens in the presence of homogeneous catalyst as the sodium methoxide, sodium hydroxide, (NaOH) or potassium hydroxide (KOH). However, those catalysts create problems such as the possibility of soap formation and they need stages such as the neutralization and washing of the biodiesel. Moreover, the residues of the hydroxides are aggressive to the environment. To eliminate these and other problems, the present work presents a new technology in heterogeneous catalysts with enough basic force to accomplish the transesterification of vegetable oil in tender conditions. For the first time, hybrid catalysts of the type molecular sieves of the family M41S ([CTA]Si-MCM-41, [CTA]Si-MCM-48 and [CTA]Si-MCM-50) were synthesized and used, without modification, in transesterification reactions with monoesters and vegetable oils. The results show that catalysts reach conversions around 96 % in the transesterification of canola oil (1:18) at 79 ºC, however the activity is reduced when the catalyst is reused, due, mainly, to the lixiviation of the CTA+ cation. However, new techniques are being developed in order to increase the catalyst stability.
Eficiência de Metarhizium anisopliae (Metsch) Sorok. no controle de cigarrinhas-das-pastagens (Homoptera: Cercopidae) em capim-marandu (Brachiaria bryzantha) em Corumbiara, Rondônia
(Universidade Federal de São Carlos, 2010-08-13)
Teixeira, Vagner Meira
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Sá, Luiz Alexandre Nogueira de
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https://lattes.cnpq.br/0985007035212882
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https://lattes.cnpq.br/2676352999249733
Spittlebugs are the main pests of pasture of America Tropical, among which the genera Deois and Mahanarva stand out. These pests have been causing serious losses in the Brachiaria bryzantha pasture of the Rondônia State, Brazil. The fungus entomopathogenic Metarhizium anisopliae (Metsch.) Sorokin is considered an efficient agent for the biological control of many insects that represent plagues of agriculture. The objective of this research was to evaluate the efficiency of spraying Brachiaria bryzantha pasture with the fungus M. anisopliae (isolate ESALQ 1037) against naturally infestation with the cattle tick spittlebug nymphs was evaluated. In this work the efficacy the fungus of applied at in twice formulations (concentrated emulsifiable oil and wettable powder), trhee doses (1,0 x109, 1,5 x109, 2 x109 viable conidias ha-1) in once for twice during the pest infested with period. The study was conducted from December 2008 to February 2009 at the Daiane farm in Corumbiara, Rondônia State, Brazil. The fungus was applied from 05 pm, under average temperature of 18 ºC and relative air humidity of 69%. The volume of the solution utilized was 300 liter ha-1 with sprayer. The evaluations were performed at the beginning (day 0), and 15, 32, 45, 61 e and 75 days, being one evaluation before the applications, and five after the applications of this fungus, counting the spittlebugs (nymphs) per 0.0625 m² (0.25 m x 0.25 m square). At 0 days the infestation was of 153,6 nymphs/m². It was verified that the levels of nymphs were reduced after the sprayings of M. anisopliae in all treatments. The stinkbug in efficiency control levels were higher of spittlebug nymphs for aplication fungus isolate, between 85,30% to 93,72%, in 75 days the applications, of this fungus. From these data, we conclude that M. anisopliae isolate ESALQ 1037 was efficient to control spittlebug in the B. bryzantha pasture, thus being a promising choice for use as a microbial insecticide and thus being promising choice familiar agriculture integrated pest management of in the Rondônia State
Síntese de uma coleção de cumarinas, possíveis inibidores da enzima acetilcolinesterase
(Universidade Federal de São Carlos, 2010-08-13)
Vieira, Lucas Campos Curcino
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Corrêa, Arlene Gonçalves
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https://lattes.cnpq.br/7425467156776144
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https://lattes.cnpq.br/1662838473695956
Alzheimer's disease is associated with decreased rates of acetylcholine (ACh) in synaptic process, decreasing the cortical cholinergic transmission, and other neurotransmitters such as norepinephrine, dopamine, serotonin, glutamate and substance P in lesser extension. Some drugs used to treat Alzheimer's disease available in the market are inhibitors of acetylcholinesterase enzyme (AChE). The aim of this work was synthesize and evaluate a library of coumarins with respect to inhibitory activity against AChE in IMERs (Immobilized Enzyme Reactor). This study could contribute to establish the structure-activity relationships and the rational design of possible drugs to treat the Alzheimer's disease. During the development of the project it was used the Knoevenagel condensation between salicyladehydes and diethyl malonate to obtain coumarins. The functionalization of the coumarins had been carried by amidation, nucleophilic substitution, multicomponent and cross coupling reactions. The Suzuki reaction has proved to be an interesting tool to obtain 8-substituted coumarins, a method that has not yet been described in the literature. In total 23 compounds were synthesized. The inhibitory activity of the synthesized compounds was evaluated using Ellman s method adapted to a IMER, which offers the advantage of the stationary phase retains the activity of the enzyme with superior stability and thus it can be used multiple times and in flow. Among the synthesized coumarins, ethyl 2-oxo-7-(2-(piperidin-1- yl)ethoxy)-2H-chromene-3-carboxylate proved to be the best inhibitor for AChE, with an IC50 of 6.3 μM.
Síntese e caracterização de compósitos magnetoelétricos particulados de ferritas de Co e Ni e ferroelétricos no CFM
(Universidade Federal de São Carlos, 2010-08-15)
Zabotto, Fabio Luis
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Garcia, Ducinei
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https://lattes.cnpq.br/5236758856687873
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https://lattes.cnpq.br/8828635263888498
Nowadays, the optimized magnetoelectric coupling in particulate composites is based on the optimization of the processing techniques, which support an integrity interface between the phases, and on the novel combinations of the ferroelectric and ferromagnetic phases. In this context, this work suggests the synthesis and characterization of particulate magnetoelectric composites of different ferroelectric systems, of compositions in the morphotropic phase boundary (MPB)- since they show a maximization of the piezoelectric coefficients- coupled with nickel or cobalt ferrites- since they show great magnetoestrictive coefficients. As ferroelectric phases, the lead zirconate titanate, or Pb(Zr0,53Tio,47)O3 (of simple perovskite structure), the lead titanate modified magneion niobate titanate, or 0,675Pb(Mg1/3Nb2/3)- 0,325PbTiO3 (of complex perovskite structure) and the lead barium niobate, or Pb0,61Ba0,39Nb2O6 (of tungsten bronze structure), where choosen. The ferroelectric/ferrite system composites were obtained in the molar ratio 80/20, by the conventional solid state and oxide mixing technique. The ceramic bodies were densified in different conditions, as a function of the time and temperature, by the conventional sintering process, or by the uniaxial hot pressing process. The relationship between the kind/combination of the phases, sintering techniques, and processing parameters, with the densification degree and the phases integrity was determined by structural, microestructural, physical and electrical characterization of the ceramic composites (with attention in those composed by nickel ferrite). As the main result, a processing protocol (validated only for the hot pressed composites, since the conventional sintering process generated conductive ceramics), independent of the constituent phases, which allows the synthesis adequate composites for research and application in the industry, were novelty determined. This protocol were also tested with significant results for composites based on cobalt ferrites. For all the cases of optimized processing conditions, dielectric, magnetic and magnetoelectric characterizations locking for the influences of the ferroelectric and/or magnetic phases in the multiferroic properties were performed. The values of magnetoelectric coefficients (xME) were close or higher than the most of the common particulate composites, and the PMN-PT/NFO shown the highest ratio dxME/dH of the studied materials. A general picture of the relationship between the magnetoelectric response and the research parameters, in this work, is presented, proving the relationship between the high density and integrity of the phases and the maximization of the magnetoelectric coupling.
Elites políticas em Caraguatatuba (1970-2000)
(Universidade Federal de São Carlos, 2010-08-16)
Souza, Samuel Candido de
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Kerbauy, Maria Teresa Miceli
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https://lattes.cnpq.br/4762029784021248
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https://lattes.cnpq.br/1407082138098452
In view of the process of administrative decentralization promoted by the federal government, especially after the 1988 Constitution, the local level becomes crucial regarding the implementation of public policies and the promotion of economic development. Thus increases the importance of local political elites who will be responsible for more significant policy decisions with immediate impact on the citizen s lives. This research analyzes the process of recruitment of political elites in Caraguatatuba County during the period corresponding to the years 1970 to 2000. We attempt to correlate changes in the social composition of the elite to the social and economic transformations occurring in the city during this period as well as the institutional transformations occurred in the country. We emphasize the processes of political integration of social agents concerning to the mechanisms leading to conversion of social resources into political capital for the establishment of elites at the local level.
Percepção de docentes da UFSCar sobre sua agência de inovação
(Universidade Federal de São Carlos, 2010-08-16)
Martins, Patricia Villar
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Andrade, Ronaldo Soares de
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https://lattes.cnpq.br/2853300414182063
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https://lattes.cnpq.br/8440827865670816
The objective of this study consisted of collecting and analyzing data with teachers of the various Academic Centers of UFSCar about their understanding of the term "innovation", knowledge of intellectual property policy in UFSCar, and the performance of its Innovation Agency. The Innovation Agency of UFSCar was established to meet the requirements of the Law of Innovation (10.973/04), which states in its Article 16 that every Science and Technology Institution (from the Portuguese acronym ICT) is expected to have a Technological Innovation Center (from the Portuguese acronym NIT) with the purpose of managing the innovation policy of the University. In practice, the NIT has the mission of managing all intellectual property generated by the ICT, encompassing the protection of intellectual property and technology transfer, and linking the University with businesses in order to boost technological innovation in Brazil. The methodology included a questionnaire as an instrument of data collection which consisted of open questions, multiple choice, marking scale. The questionnaire was divided into three main issues: 1) Innovation, 2) Domestic regulation UFSCar, and 3) Innovation Agency UFSCar. It was sent via e-mail to 935 teachers, 94 of whom responded to it. Thus, an overview on the perception of teachers on the theme of innovation, the internal rules of UFSCar and the Innovation Agency was obtained by the compilation of these data. The data analysis resulted in the development of a set of recommendations for structuring and operation of the Agency for innovation to be developed based on the perceptions of teachers, and this is the main contribution of the dissertation.
Existência global de soluções para alguns sistemas de leis de conservação
(Universidade Federal de São Carlos, 2010-08-17)
Ferreira, Ricardo Edem
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Kondo, Cezar Issao
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https://lattes.cnpq.br/0900348462714778
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https://lattes.cnpq.br/1696477429814262
In this work, we studied the construction of weak solutions for some systems conservation laws and for a scalar conservation laws For the p-systems relativistic we use the Wave-front tracking based on Bressan, when the total variation of the initial data is locally bounded. We construct is somewhat more simpler than in methods studied by other authors. For the equation of Aw-Rascle we apply the method of Glimm and the method Wave-front tracking, we consider the appearence of the vacuum, when the total variation of the initial data is locally bounded. For the scalar conservation law we study the construction of admissible weak solutions using the Glimm method and the poligonal approximations.
A figura da mulher na linguagem da propaganda: implicações sociais
(Universidade Federal de São Carlos, 2010-08-18)
Campos, Débora Mendes
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Pellegrini, Tânia
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https://lattes.cnpq.br/0280434883580627
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https://lattes.cnpq.br/4010854473110071
This paper uses the discussions of female bodies' in advertising, based on the analysis of a representative Set of televised ads Brazilian open. Starting from a macro sociological perspective based on critical theory of Adorno and Horkheimer (1985), sought to understand the underlying structural supposed to advertising messages. Identified that androcentric social order predates the Institutions of the contemporary consumer society, the Cultural Industry and capitalism. However, is related to Them and Them is by re-meant and unfolded. The male and female stereotypes convey, Creating templates for the identification and, therefore, behavioral patterns, advertising vehicle become a privileged gender ideology
Leibniz contra o vazio: a relação entre a teoria das substâncias e o conceito de espaço
(Universidade Federal de São Carlos, 2010-08-19)
Sita, Patrícia Coradim
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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/8759080092716282
In order to understand the concepts of space and matter in the physics of Leibniz we should consider the metaphysical concept of substance. Such is the fundamental hypothesis of our inquiry. The problem is to conciliate the mechanical causality with an universe consisting of immaterial simple substances. Taking into account the principles of Leibniz s cosmology, the dynamic conception of substance, the refutation of the vacuum, the continuum and the infinite, the matter appears to be an aspect of the substance susceptible of infinite divisibility, without thereby invalidating the indestructibility and unity of substance. From this it arises that the space is full and relational.
Investigação do controle sensório-motor e da relação funcional de torque de rotação do ombro em arremessadores com e sem sintomas de impacto
(Universidade Federal de São Carlos, 2010-08-19)
Zanca, Gisele Garcia
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Rosa, Stela Márcia Mattiello Gonçalves
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https://lattes.cnpq.br/1406279816228350
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https://lattes.cnpq.br/7200122514782641
Repetitive throwing movement causes adaptations to athletes shoulders and predisposes them to the development of impingement symptoms. The objective of this study was to investigate if there are alterations in sensorimotor control and in the functional torque ratio of shoulder rotation in overhead athletes with impingement symptoms and to distinguish these from alterations due to sporting practice. To this end, three groups of subjects were evaluated: athletes with impingement symptoms, asymptomatic athletes and a control group of nonathletes. The participants were evaluated with a Biodex System 3 isokinetic dynamometer in a seated position with the shoulder at 90º of adduction and 90º of elbow flexion. Sensorimotor control was evaluated using an isometric torque steadiness evaluation. The isometric peak torque and submaximal torque steadiness at 35% peak torque were tested during medial rotation and lateral rotation of the shoulder. For each submaximal repetition, the standard deviation, coefficient of variation and time to stability were calculated. Only the standard deviation during medial rotation was greater in asymptomatic athletes than in control group. The isokinetic evaluation was carried out at the velocities 90°/s e 180°/s and 240°/ in concentric and eccentric modes. Peak torque-to-body weight and the functional torque ratios LREcc/MRCon and MREcc/LRCon were compared between groups. Asymptomatic athletes presented greater peak torque-to-body weight for concentric medial rotation at 180°/s and a lower LREcc/MRCon ratio at 90°/s and 180°/s than CG. The velocity 240°/s was excluded from the analyses because many participants were unable to reach the predetermined velocity in the eccentric tests, principally during lateral rotations. This difficulty was attributed to the low peak torque of lateral rotation that could be generated in this position. Overall, the results demonstrated that overhead sports training leads to adaptations in maximal torque and in the torque steadiness of medial rotation in healthy athletes, which may be related to throwing performance. Nevertheless, it is not possible to conclude that such alterations predispose these athletes to injury, since athletes with impingement symptoms group was not significantly different from the other groups in any of the evaluations.
Injetividade de aplicações polinomiais via resolubilidade de campos vetoriais
(Universidade Federal de São Carlos, 2010-08-19)
Braun, Francisco
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Santos Filho, José Ruidival Soares dos
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https://lattes.cnpq.br/6112529384454347
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https://lattes.cnpq.br/5890727692959507
Let F : Rn → Rn be a polynomial map such that the derivative map DF(x) be invertible for each x ∈ Rn. In this work, using techniques of solvability of suitable vector fields, we investigate the role of the degree of F in its injectivity. In R2, we show that if the degree of one of the components of F is less or equal 3, then F is injective. In Rn, we discuss the injectivity of the maps F(x) = x + H(x), where H : Rn → Rn is a homogeneous polinomial map of degree 3 and detDF(x) = 1, ∀x ∈ Rn. Here we propose a new way to approach this problem. We show the injectivity when n = 3.
Potencialidades e limites de uma disciplina do curso de Educação Musical a distância na UFSCar
(Universidade Federal de São Carlos, 2010-08-20)
Carvalho, Isamara Alves
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Joly, Ilza Zenker Leme
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https://lattes.cnpq.br/5569335876343450
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https://lattes.cnpq.br/7634525753891601
This work was developed from issues and concerns related to the nature of human, musical and technological learning within a practical discipline of the Musical Education Bachelor Course (online education modality) of the Open University of Brazil at the Federal University of São Carlos (UAB / UFSCar). What educational processes are evidenced in a practical discipline of the course of online music education? What aspects could help build the online musical education teaching knowledge base? The theoretical fundaments permeated concepts of Online Education [Moore & Kearsley (2007), Moran (2006), Silva (2006)], pedagogical and musical Multidimensionality [Kramer (2000), Del Ben (2003), Hentschke (2001)], Pedagogical knowledge base and Teaching Knowledge [Shulman (1987), Tardif (2002) and Mizukami (2002)] among others. Data were collected in the virtual environment of the discipline as well as from the audiovisual records of the activities realized during face meetings. Are fellow volunteers in this research the virtual tutor, the students, as well as the teacher-researcher, author of this thesis. It was highlighted the learning related to groups coexistence representations, solidarity, the building of social bonding, conflict resolution within the data set on human relations in interactions in the network of computers connected to the Internet. Amongst specific learning aspects, regarding music, music education and the use of technology, it was possible to observe the diversity of challenges and achievements in the understanding and performing of musical pieces with the recorder, body percussion and alternative materials, and registering diversity in the use of audiovisual resources. I concluded that the modality of online education in this discipline has offered many dialogic, musical and technological challenges to the participants; however, it has not limited anyone to work in the search for fulfillment of the discipline goals. The limits and potentials are the choices and referrals attributes of the managers and the students of the discipline. It is possible to find out in this study the understanding and overcoming movement of conceivable limits, although not definitive. Other papers may discuss the significant learning starting from the speeches of the students themselves and participant tutor, besides analyzing other methodological possibilities in forwarding the same discipline in this online educational modality.
Análise de patentes sobre sistemas de colheita de cana-de-açúcar
(Universidade Federal de São Carlos, 2010-08-20)
Pinto, Márcia Ferreira
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Faria, Leandro Innocentini Lopes de
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https://lattes.cnpq.br/9620356857317923
Either by environmental, economical, technological or social reasons, the total mechanization of field operations in the cultivation of sugar cane has already been a reality in the sugar cane plantations in Sao Paulo state in which the harvesting operations (mainly cuts) performed by the man beforehand are being systematically replaced by machines, trying to match productivity with sustainability and the development of the field and the city. Within this scenario, the market for machinery and agricultural implements for the harvesting of the sugar cane has grown, but some technological barriers have been identified as effective for the advancement of the mechanization in the harvest of sugar cane: 1) the cleaning system of stems that according to experts, does not promote an efficient cleaning, taking to the plant impurities that compromise the production, 2) the size of the machines, which does not meet the needs of the small and medium producers (the biggest number in the country), 3) a decrease in the weight of the machines, trying to reduce the soil compaction; 4) harvest in several rows (today the harvest is done in the most two rows) to reduce costs of the operation. This work is a result of the research in patent documents to know and to prospect the current state of technological systems for collection, focusing mainly the system of mechanized harvesting of sugar cane and especially the sub-cutting system, building technological indicators to contribute with the advancement of the set of solutions for the accomplishment of the agricultural harvest of the cane. The methodology used in this work was the bibliography in patent documents, in the database Derwent Innovations Index. It was developed using a search expression CIP and the keywords to limit the universe of research in which 587 patent records deemed as relevant were recovered. After processing the data in Infotrans, they were treated with the VantagePoint software which crossed the data and created thesaurus, allowing some inferences. The results identified some scenarios that show the boundaries of the technology in harvesting the sugar cane. It was also possible to identify the countries and the companies that place more patents, and to identify which countries have been trying to use the technology for the mechanization of the harvest. An example is China with a significant participation since 2005 in number of applications for patents. Therefore, it was possible to draw some scenarios that are best explained in Chapter 4: relating to the results achieved.
Estudo do comportamento reocinético, propriedades de temperatura de transição vitrea e viscosidade de sistemas de resinas epoxi
(Universidade Federal de São Carlos, 2010-08-20)
Nascimento, Richard Rangel do
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Leite, Edson Roberto
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https://lattes.cnpq.br/1025598529469393
In this work, we have developed a study of the impact of two variables (Water and Monohydroyized Epoxy Resin) to Epoxy resin raw material in the behavior of the reactivity and viscosity of a " Epoxy System (Parts A - Resin Modified + Component B - Curing Agent) used in the manufacturing of blades Reinforced Plastic (FRP) for wind power generators. Over 90% of Global manufacturers of blades utilize the infusion process, which requires the speed of evolution of viscosity depending on the reactivity of the epoxy system meets specific conditions and limitations of the infusion process in their plants. Knowing that those two variables have a direct impact on the property of viscosity, we have evaluated separately the correlation of the variables with the epoxy resin and the component "A" of epoxy system. The objective of this project was to obtain the ability to predict and then set the best parameters for those variables that did not cause any disturbance rheokinetic when using Epoxy System.
Mudanças organizacionais e diferenciação social: os trabalhadores da indústria do alumínio primário paraense
(Universidade Federal de São Carlos, 2010-08-20)
Barbosa, Attila Magno e Silva
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Lima, Jacob Carlos
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https://lattes.cnpq.br/9244132532446607
;
https://lattes.cnpq.br/343924820045
This study intends to examine to what extent the organizational changes in industry of primary aluminum, in the city of Barcarena, Pará, lead to worker s adhesion and results differentiation in the social identities of direct and outsourced workers. Outsourced workers have a different status in the workplace, which excludes them from the benefits offered by the companies. As a result, society has to deal not only with the fragility of the wage relationship, but also with the collapse of the principles that regulate sociability among workers. The thesis is that the company organizational changes produce the adhesion of direct workers to the organizational ideas cause give them a feeling of colective belonging, even when we take into consideration the reduction of the workers that productive by lean production processes. Fifteen interviews were conducted with each group of workers; two union leaders were also interviewed. Furthermore, were examined the collective agreement between the direct workers and the company, and that company s yearly reports, since 2003.