Browsing by Issue Date, starting with "2015-08-11"

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Análise das características estruturais do FAD em oxidorredutases
(Universidade Federal de São Carlos, 2015-08-11)
Silva, Rui Filipe Nogueira da
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Schpector, Julio Zukerman
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https://lattes.cnpq.br/4252331837170383
;
Caracelli, Ignez
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https://lattes.cnpq.br/8956527354576143
In this work, oxidoreductases of the glutathione reductase (GR), trypanothione reductase (TR) and sulfhydryl oxidase (SOX) sub-subclasses that are FAD (flavin adenine dinucleotide) dependent enzymes and contain a group with sulfur as a charge acceptor/donor near the FAD isoalloxazine region were studied. Oxidoreductases are enzymes capable of catalyzing redox reactions, thus requiring donor groups and acceptor groups of charges. FAD is a cofactor of the oxidoreductases and participates in the enzymatic catalysis, brokering the transfer of charges between ligands and the polypeptide chain of the proteins. The thiol groups and disulfide bonds existing in the enzymes are, in many instances, involved in these transfer of protons and electrons together with the FAD. The conformation of the isoalloxazine region of the FAD and the π interactions between the sulfur atoms and the flavin region were studied. The crystal structures of 180 oxidoreductases with FAD and disulfide bonds retrieved from the Protein Data Bank (PDB) were analyzed, which allowed to set up some relationships between the bond lengths of the disulfide bridge in proteins and in small molecules, to determine the existence of deformations of the isoalloxazine moiety of the FAD, to measure the SG-π interaction distances and realize some FAD features that help differentiate the GR, TR and SOX sub-subclasses.
Gestão pública contemporânea e a prática administrativa : estudo de caso do Instituto Federal de Educação, Ciência e Tecnologia de São Paulo - IFSP
(Universidade Federal de São Carlos, 2015-08-12)
Mariotti Junior, Claudemir
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Ribeiro, Pedro José Floriano
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https://lattes.cnpq.br/6336151484882362
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https://lattes.cnpq.br/6676800088984129
The settings of traditional public administration do not pay attention to the demands of contemporary society, which required changes in its structure from the 70s, so that it is possible to offer a more efficient service, to provide higher quality for citizens. In this vein, there appear the proposals of the movement called New Public Management, who design new ways of public management by incorporating techniques derived from the business management. This transformation reached Brazil only from the 90s, especially in the FHC government, but its impact on the change in the public bureaucracy are still developing. This study aims to value the development of public bureaucracy for the efficiency of its management and study the tools proposed by the New Public Management, to show how these ideas were adopted by the Brazilian government. These inputs will serve as a basis for analysis of case study of a new body in the educational sector: Instituto Federal de Educação, Ciência e Tecnologia de São Paulo. Through the analysis of his rectory and decentralized drive Matão, the proposal is to show that this one due to the combination of the current configuration of the public bureaucracy, coupled with an intense policy of expansion of the body, has a management permeated by deficiencies related to the adoption of inadequate management methodologies and it is possible to increase efficiency of its shares if engage in work with proposals of New Public Management.
Reflexos da terceirização no serviço público federal : análise de elementos do contrato de serviços de limpeza da Universidade Federal de São Carlos frente à reforma do estado
(Universidade Federal de São Carlos, 2015-08-12)
D’Angelo, Camila Luchesi Silveira
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Capella, Ana Cláudia Niedhardt
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https://lattes.cnpq.br/5810332148425938
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https://lattes.cnpq.br/6800122123448874
Outsourcing is a premise of flexible work that emerged on second half of 20th century and was quickly spread around the world. Coming to Brazil, it was included in government's guidelines around 1960's, in order to reduce the state apparatus. During the Reform of Brazilian State, in the 1990's, this form of hiring took larger proportions – although it was not the main theme of the changes – due to the issued legislation, specially for decree no. 2.271 of 1997, which determined that ancillary activities in federal service must be extinguished and substituted by located labor. Since then, an increasing number of administrative contracts have been signed between the public authority and service provider companies. This dissertation considers this context. The case study aims to investigate some of the influences exerted by the legislation created during the last Reform of Brazilian State over the contracts execution, taking as example the last experience of cleaning service at Universidade Federal de São Carlos. The text presents some general outsourcing concepts and history; the reforms by which Brazilian State has gone through during the last century and its consequent chances; the characterization of the institution where the search has been developed; a critical analysis of the cleaning service contract, highlighting the points concerning to supervision, for which, not only a public worker, but a monitoring Commission and a accompaniment group were designated. Finally, a sketch of satisfaction survey is proposed, to be answered by the whole academic community, objecting to reveal the user's view about the studied service. The legal instruments which permit practical contract inspection are often considered onerous and insufficient to avoid damaging denouement to the service, the public authority and, especially, to the employees hired by this work regime.
Mapeamento proteico da matriz do esmalte de incisivos de camundongos susceptíveis e resistentes à fluorose dentária
(Universidade Federal de São Carlos, 2015-08-12)
Leite, Aline de Lima
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Buzalaf, Marília Afonso Rabelo
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https://lattes.cnpq.br/6461505420218183
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https://lattes.cnpq.br/3327053007432133
Enamel formation is a two-step complex process by which proteins are first secreted to forming an extracellular matrix, followed by massive protein degradation simultaneously with the completion of mineralization. Excessive exposure to fluoride can disrupt this process and drive to a condition known as dental fluorosis. Recently it has been reported that genetic factors may influence the responses of mineralized tissues to fluoride, a phenomenon observed in A/J and 129P3/J mice strain. The present study aimed to map the protein profile of mouse enamel. Enamel matrix samples were obtained from A/J and 129P3/J mice and analyzed by two-dimensional electrophoresis and liquid chromatography, coupled to mass spectrometry. A total of 120 proteins were identified, from which 113 are well characterized, both experimentally and functionally. Seven proteins were classified as uncharacterized proteins. After functional enrichment, 9 proteins were significantly related to the terms "odontogenesis and tissue biomineralization”. Surprisingly, the COL1A1 and COL1A2 protein were found on secretory stage enamel of both strains. Protein interaction analysis showed interaction between the ENAM and other types of collagen. Another interesting finding was the possibility of uncharacterized sequence Q8BIS2 be an extracellular matrix protein involved on degradation of matrix proteins. These findings suggest that collagen is present on dental enamel and it seems to have a role in amelogensis. Furthermore, the existence of an new enzyme could be the key to elucidation of the mechanisms involved in the enamel biomineralization and the genetic susceptibility to dental fluorosis.
Carbonos no material ativo de baterias chumbo-ácido
(Universidade Federal de São Carlos, 2015-08-12)
Tsurumaki, Maumi
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D'Alkaine, Carlos Ventura
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https://lattes.cnpq.br/8699821828310072
Different types of carbon has been studied globally as additives for negative active material of lead acid batteries aiming to improve the charge acceptance and the cycling endurance of the batteries when applied in PSoC (Partial State of Charge) condition of start stop application. This study focused in the carbon black and graphite available in the market. It has been developed a laboratory method to produce the negative plates and then cells of type “p/n/p” has been assembled for characterization of negative plates produced in the laboratory. In the first part of the study it was observed the physical effects caused by addition of different amounts of carbon in the lead oxide paste which compounds the negative plate of the battery. It has observed in the experiments that higher the amount of carbon added in the lead oxide, more amount of water needed to produce the lead oxide paste in the plastic region. In the second part of the study it was verified the influence of carbon black or graphite addition in the electrochemical performance of negative plates. The plates produced with addition of 0.2 % of carbon black, or 2.0 % of graphite presented the plate capacity in mA h g-1 in the Peukert’s representation very similar to the plates of serial production from market. In the case of the plates produced with addition of 0.2 % of graphite, the test resulted in lower capacity in mA h g-1 in Peukert’s representation, very close to the plates produced without carbon addition. In the charge and discharge endurance test in PSoC condition, the plates produced in the laboratory with addition of 0.2 % of carbon black or 2.0 % of graphite presented better potential stability measured in V/cycle if compared to the plates of serial production from market or even plates produced with addition of only 0.2 % of graphite. These data signs to estimation of higher number of cycles until the end of life of the negative plates produced with 0.2 % of carbon black or 2.0 % of graphite, showing the beneficial effects of carbons in the negative active material of lead acid battery.
Teoria do grau topológico e sua aplicação em um problema elíptico ressonante superlinear
(Universidade Federal de São Carlos, 2015-08-13)
Gabert, Rodrigo de Freitas
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Rodrigues, Rodrigo da Silva
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https://lattes.cnpq.br/9606661651573155
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https://lattes.cnpq.br/1113124124946591
In this work, we will show an important tool of nonlinear analysis, which has great applicability in partial differential equations: the topological degree theory. We will construct the topological degree in finite and infinite dimensions and show its main properties. Through this theory we will prove existence of solutions for two nonlinear elliptic problems with Dirichlet's boundary conditions, which were studied in [8]. To make topological degree be applicable to such problems, it will be of great importance obtain a-priori estimatives for possible solutions of these problems. To this end, we'll use inequalities of Hardy-Sobolev's type.
Escola em tempo integral : política educacional, gestão da pobreza e a produção social do consenso
(Universidade Federal de São Carlos, 2015-08-13)
Rabesco, Rafaela
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Georges, Isabel Pauline Hildegard
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https://lattes.cnpq.br/8496471825849003
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https://lattes.cnpq.br/8741066777099421
This research was aimed at studying / researching the process and the social consequences of educational policy management for the Brazilian public school, whose tendency is to implement the School Full-Time. Based on the analysis of official documents and reports, the literature review on the topic and a qualitative research with the research subjects we seek to dwell on the analysis of the following key questions that guide the study: To analyze how the model of education full-time was historically, becoming a consensus with regard to educational policies aimed, in theory, improving the quality of education; Understanding the influence of multilateral organizations in the social production of this consensus and the practical view of implementation in developing countries, such as Brazil; Examine ways of receipt of such policy in the school ground through the research subjects who experience in a concrete way, the dilemmas posed to school through this educational modality that expands the role of the school while makes new demands to those who make up in its various spheres; Identify and describe concepts and comprehensive education practices full time evidenced in educational programs of the municipality / school searched; And may, therefore, examine what are the specifics of this program, in normative sense, the municipality studied in relation to national policy School Full-Time and observe to what extent this school marked out in full-time school attaches to the role of people management poor and poverty, as a space of "guardian" of children in situations of social vulnerability; After carrying out semi-structured interviews, informal conversations, observations, systematic notes in Fieldbook and the daily life of the school in the city studied, it was observed that: You can not understand the meaning of school full time today, without taking into account the social changes from the 1990s, mainly to turn the social policies of management parameters in international organizations (such as the World Bank and UN) regarding combating poverty (or vulnerability), to moralize the discussion depoliticizing it at the same time. And socially producing consensus that educational (and social) policies, focused on poor management (and poverty), when guided by the individualization both in the process of work as the education / training process - mobilizing subjectivity "autonomous" and "trained "that can emerge through self development - act to legitimize, in the name of social justice, individual success. The school produced under this social effect is extended in time, but without corresponding qualitative straight to it promulgates, due mainly to the conditions of objective and subjective insecurity which promote individualization rather than the collective, the guilt due to the charges social circle, body and mental suffering on the negative and lasting effects on the subjectivity of teachers and the lack of perspective in relation to the direction of the teaching profession and school as fact institution forming and socialization of knowledge.
Estruturação genética populacional de Salminus hilarii (Characiformes : Characidae) na Bacia do Alto Paraná
(Universidade Federal de São Carlos, 2015-08-13)
Nunes, Aline Galindo
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Freitas, Patrícia Domingues de
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https://lattes.cnpq.br/5647631868534064
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https://lattes.cnpq.br/7305656895958851
The Salminus genus is characterized by predatory fish medium to large, migratory and ichthyophagi, very appreciated in fisheries and gastronomy. Among these stands out the Salminus hilarii species, popularly known as tabarana and considered top of the food chain, due to its high degree of selectivity for environments with rich water oxygen which constitutes a good environmental indicator. This species occurs in the São Francisco basins, Paraná basins and Jaguaribe river, and depends on specific hydrological conditions to carry out their reproduction. In this context and because of intense anthropogenic interference that such river systems have suffered, population's study of tabaranas in the upper Paraná basin can contribute to a better understanding of aspects related to its population structure and conservation of their populations. Thus, the aim of this study was to characterize the population genetic structure of S. hilarii at different periods in rivers of the Upper Paraná basin, in order to better understand the population dynamics of fish and effectively contribute to their conservation. It was used for molecular analysis 15 polymorphic microsatellite loci and mtDNA (D-loop). The results revealed the existence of population differentiation among the rivers sampled. Nevertheless, individuals sampled in the Jacaré-pepira river and Cubatão showed no genetic difference, indicating the occurrence of gene flow between populations sufficient to maintain the genetic homogeneity. Moreover, it was possible to identify the temporal structure into the Turvo and Jacaré-pepira river. A high genetic diversity was found in populations of Upper Paraná basin sampled rivers. The D-loop analysis showed no population structure between samples, but indicated the occurrence of a high diversity. The contradictory results may be due to mutational rates of the markers used, since microsatellites have high mutational rate. These results are important for understanding the behavior and biology of these fish, and also to establish fisheries management programs and conservation S. hilarii in the upper Paraná basin.
A gestão do conhecimento nos processos do Departamento de Almoxarifado da UFSCar
(Universidade Federal de São Carlos, 2015-08-13)
Silva, Jônatas Rodrigues da
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Martins, Manoel Fernando
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https://lattes.cnpq.br/3921504261628850
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https://lattes.cnpq.br/1451204934266281
Knowledge management is the orderly activity that an organization conducts to appropriate the known knowledge, register and catalog it, and make it available to the entire organization.The management, creation, and dissemination of knowledge is important for any organization. The present descriptive investigation, through a case study, analyzed the actual knowledge in the processes performed by the Warehouse Department at the Federal University of São Carlos (UFSCar), and has identified the tacit and explicit knowledge, and proposed a model for the Management of knowledge at UFSCar. The main theoretical reference was the theory of knowledge creation proposed by Japanese professor Ikujiro Nonaka.
Padronização de extratos de folhas de amoreira com potencial fitoestrogênico para uso no tratamento dos sintomas do climatério
(Universidade Federal de São Carlos, 2015-08-13)
Bergo, Patrícia Luísa de Souza
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Forim, Moacir Rossi
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https://lattes.cnpq.br/1234565160573730
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https://lattes.cnpq.br/4595777908539024
Mulberry leaves are commonly used by women to alleviate hot flashes, shivering and night sweats. These symptoms appear due to the irregular estrogen secretion by ovaries during climacteric and are often alleviated using natural products for non-hormonal replacement therapy (NHRT). A recurrent issue regarding the use of plant extracts as therapeutics is the lack of standardization, compromising their efficacy. In the present work, hydroethanolic extracts of Morus alba leaves with pharmaceutical potential were qualitatively and quantitatively standardized. All extracts were screened by in vitro assays for estrogenicity based in estrogen receptor cell model (ER+ MFC-7). The ones containing up to 35% ethanol (v/v) induced cell proliferation like 17--estradiol. The extracts with alcohol level between 35 and 75% behaved as partial agonists, while higher alcohol content extracts killed the cells. In ER selectivity in vitro assay based on ER- cell model (MDA-MB-231), extracts prepared with up 55% ethanol were inactive and the others killed them. Cell-based assays using non-tumoral fibroblasts showed cytotoxicity for extracts with ethanol concentration higher than 60%. Thus, extracts prepared using 0-35% ethanol were the more suitable for phytoestrogenic sources in NHRT. Ethanol solutions (50-60%) were the best ones to get an extract with antitumoral potential for triple negative breast cancer subtype. Multivariate exploratory techniques were applied to analyze the chemical profile provided by FT-ICR-MS and LC-DAD-MS. Extracts with estrogenic activity had 3-O-(6”-glycosyl), 3-O-(6”- rutinosyl) e 3-O-(6”-malonylglycosyl) derivatives of quercetin and kaempferol. These 6 coumpounds were then defined as chemical markers for the quantitative standardization of mulberry leaf extracts, expressed as total flavonoids content (TFC). The maximum TFC was below 3% (w/w) in the total agonistic-like extracts. In the partial agonist-like and highly toxic ones the average levels were 4.8% and 4,4% respectively. The influence of environmental factors over the bioactive compounds content in mulberry leaves was also investigated. Four-seasons: the highest TFC was found in the beginning of spring (4.9%) and the lowest one in autumn (2.0%). Circardian cycle: the maximum TFC was reached in early morning (2.4%), gradually reducing throughout the photoperiod. Senescence: TFC average increment at 0.53% monthly. Hydric stress: higher TCF values (2.0%) were found during drought periods. Quantitative analysis of the chemical markers was also performed in samples of mulberry-based herbal drugs. The TCF results showed a huge variability among them (0.28 to 13.88%), clearly evidencing the lack of standardization of raw materials to be used in formulations. This work highlighted that mulberry leaf hydroethanolic extracts are sources for phytoestrogens and hence have promising potential for treatment of climacteric symptoms, but the control of extraction solvent composition is the key to efficacy. Small changes on it can interfere substantially in the expected biological activity, hence the concentration of bioactive compounds must be kept under an optimal range, even in an unfavorable environmental condition.
Cinética e variação molecular de substâncias húmicas formadas da lixiviação de macrófitas aquáticas
(Universidade Federal de São Carlos, 2015-08-13)
Assunção, Argos Willian de Almeida
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Bianchini Júnior, Irineu
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https://lattes.cnpq.br/0659731944736389
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https://lattes.cnpq.br/8321009983922077
The humic substances (HS) are important to aquatic ecosystems. In this study we investigated the kinetics and molecular variations of dissolved fulvic acids (FA) and humic acids (HA) formed from aquatic macrophytes decomposition under aerobic and anaerobic conditions. The results supported the proposition and validation of kinetic models that treated the formation, transformation and mineralization of dissolved SH. Although mineralization and humification are concurrent events, the aerobic condition favored these two processes contributed primarily to HA formation. The detritus showed different mineralization and HS formation potentials. Larger amounts of HS were related to higher carbon content in the detritus and lower mineralization of dissolved organic carbon (DOC). The SH mass loss rates were lower than the refractory fraction of particulate detritus, showing the recalcitrance of dissolved HS. The DOC with higher C/N proportions presented higher coefficient rates. The HS presented similar characteristics regardless of detritus source. However, aerobic conditions favored variation of polysaccharides content in HS, indicating transformation of these compounds. Aerobic conditions favored dissolved HS mineralization and its assimilation by microorganisms. The AH presented higher reactive fraction than FA, and was an important precursor of FA. The FA presented refractory characteristics and formed less HA, indicating that the liginocellulosic compounds of the detritus are the main precursors of HA.
Paratopia política e formação do ethos discursivo na atividade literária : uma análise discursiva de narrativas brasileiras
(Universidade Federal de São Carlos, 2015-08-13)
Ponsoni, Samuel
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Baronas, Roberto Leiser
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https://lattes.cnpq.br/4613001301744682
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https://lattes.cnpq.br/6739815431846441
Our research seeks a discursive understanding of some literary events that occurred during the last Brazilian dictatorship, that is, between 1964 and 1985, during which military and civilians perpetrated a coup to the political and democratic state of law. During this period, various cultural, social, political events were severely repressed. There was, during the most repressive years - 1970 - an institutionalized censorship, which bared subversive content to the existing order. It is precisely in this most repressive period that it is focused our research to bring literary materials for analysis of some linguistic phenomena. These materials are some texts, tale genre of Cadeiras proibidas by Ignácio de Loyola Brandão, 1976, and Seminário dos ratos, by Lygia Fagundes Telles, 1977. These materials are the corpora of the research, which were taken sets of textual sequences for analysis, foundations of some theoretical notions from a discursive viewpoint of discourse analysis, more specifically those forged in the polls and French scholars. At first, this research aims an understanding of how such literary constructions created conditions of possibility to produce, incorporate and manage discursive places of meaning, even having as historical conditions of production, a curtailed and oppressive socio-cultural environment. This time also, we want to understand how it was possible the literary creation itself, at a time of censorship and repression, by a hypothesis that is based on the notion concept of paratopia, from Dominique Maingueneau in his studies of literary discourse. To the different axes of paratopic creation, we want to add an axis specifically of political creation, which would explain a certain theoretical and analytical path to literary productions in the historic time when appeared such narratives. In a second step, there is a shift that aims to establish a different theoretical and methodological procedure for, in the same process, comprehend, describe and interpret linguistic elements and discursive elements of these corpora. In this second "time-purpose" it is firmed the hypothesis of scrutinizing the composition and formation of names and descriptions given to characters in their actions in the narrative plot. Moreover, as these names and descriptions are joined also to the composition of stereotypes that ultimately sustain discursive images that the characters give themselves and others, building dialectically, then, a discursive ethos of these texts for the historical and social context in question. These elements, we believe, make up the set of forms for adhesion of speakers to a desired speech by literary texts in any possible worlds. Trying to answer these questions and hypotheses are the objective of this research.
Formação continuada de professores de matemática na EFAP : os significados de um grupo de professores
(Universidade Federal de São Carlos, 2015-08-14)
Rocha, Gisele Dionísio Ferreira da
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Tedeschi, Wania
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https://lattes.cnpq.br/5743322664981581
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https://lattes.cnpq.br/6199578584839408
This research, qualitative in nature, seeks to answer the question: What are the meanings given by a group of teachers in relation to continuing education offered by participating in EFAP – Training School and Teacher Improvement? For this, we build a theoretical referential grounding the basic elements related to continuing education of teachers in the last 40 years to the current concepts of continuing education. We draw a panorama of public policy of the State Department of Education SEE-SP contextualizing the creation of EFAP. We address the professional development of mathematics teachers and pointed out the issue of reflective teacher. The investigation was performed considering proposals for continuing education promoted by EFAP during the years 2009 to 2013. For to know the profile of math teachers involved in these continuing education courses we applied a questionnaire to twentyfive teachers. We selected five persons of group of teachers interviewed to deepen our data collection with interviews. To grasp the understanding of teachers about continuing education courses realized by them, the research uses the production concepts of senses and meanings present in the cultural-historical perspective of Vygotsky (2008). We drive us in Bardin (1997) for data analysis. In general, the development of research allowed us to conclude that the meanings attributed by teachers to continuing education courses offered by EFAP are related to a number of factors such as contact with peers, hands-on activities, certification and new knowledge in relations to pedagogical and didactic discussions.
Problemas elípticos superlineares com ressonância
(Universidade Federal de São Carlos, 2015-08-14)
Ferreira, Fabiana Maria
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Paiva, Francisco Odair Vieira de
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https://lattes.cnpq.br/2889322093175193
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https://lattes.cnpq.br/6448780169865730
The aim of this work is to present results about the existence of non-trivial solutions for some classes of resonant and superlinear eliptic systems employing topological methods. More specifcally, we use a-priori bounds on the eventual solutions of this problems and topological degree theory.
Base referencial para o povoamento de repositórios institucionais: coleta automatizada de metadados da Plataforma Lattes
(Universidade Federal de São Carlos, 2015-08-14)
Matias, Mesailde Souza de Oliveira
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Amaral, Roniberto Morato do
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https://lattes.cnpq.br/6958372164719600
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https://lattes.cnpq.br/4677960980005300
Open institutional repositories (IR) have became a major instrument for providing open access to global scientific production. In addition to providing scientific documents, IR can be used to fulfill institutional interests of the institution, such as promoting the storage of documentation, preserving institutional memory and also bringing worldwide exposure to its production. The implementation of an IR, however, depends on a number of activities, where one of the major challenges is populating it with data. In order to find solutions to improve the process of populating an IR, the aim of this work was to develop a system to automatically extract metadata from the Lattes Platform, inserting this metadata in a reference database, regarded as an intermediate step for populating the IR. Besides easing the submission process, the reference base will be able to support effective marketing campaigns to foster the auto-archival of scientific works. Our approach consists of a qualitative research, developed through action research, within the Federal University of São Carlos – UFSCar. The achieved results comprised the development of a collection of automated solutions essential for gathering and handling metadata to be imported by DSpace. The solution here proposed can be implemented by any institution, with or without an IR, strongly contributing to maximize scientific communication by automating part of the process of implementing and maintaining institutional repositories.
Demografia e distribuição da diversidade genética dos maiores felinos das américas (Puma concolor e Panthera onca) em fragmentos de mata atlântica
(Universidade Federal de São Carlos, 2015-08-14)
Souza, Andiara Silos Moraes de Castro e
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Galetti Júnior, Pedro Manoel
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https://lattes.cnpq.br/7398754661670478
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https://lattes.cnpq.br/7757815946350726
The intense destruction of the environment contributed to the decline and isolation of wild populations, providing an intensification of genetic drift and inbreeding effects. These factors reduce the ability of individuals to adapt to environmental changes, making them more vulnerable to extinction. The two largest predators of the Americas, the cougar (Puma concolor) and jaguar (Panthera onca) are animals which are threatened by the reduction and fragmentation of habitats, especially in the Atlantic Forest, which is one of the most degraded biomes in the world due to human actions. The present study aimed to investigate both demographic parameters and the distribution of the genetic diversity of cougar and jaguar populations within Atlantic Forest remnants. The chosen areas (Serra da Mantiqueira, Serra do Mar continuous and Iguaçu National Park) are among the most important for the conservation of these cats. Mostly non-invasive samples (feces and hair) were collected in protected areas present in those remaining. The depositor species was confirmed by amplification of the ATP6 gene and the samples were individualized using microsatellite loci, which were also employed in population analyses. The sex of the individuals was determined using a small fragment of amelogenin gene. The results suggest that at least seven individuals of jaguars (4F:3M) inhabit the Iguaçu National Park and 12 (5F:7M) are present in the Serra do Mar continuous. These populations seem to be different, with evidence of low gene flow between them (lack of migrant and mixed individuals and pairs of highly related individuals). In Iguaçu is also estimated to exist at least seven cougars (3F:4M), also four (1F:3M) in the Serra da Mantiqueira and 14 (5F:9M) in the Serra do Mar continuous. Genetic structure was detected in this species, but evidencing gene flow maintenance between two detected populations (sign of migrants and mixed individuals and predominantly non related individuals). In both species high genetic diversity could be observed. This study obtained critical information and still unknown, about the demographic and structure of jaguar and cougar populations in the Atlantic Forest remain. These data will provide substantial information that can be used in monitoring, as well as being crucial and decisive in the increase of effective strategies for the conservation of these species.
Potencialidades de notícias publicadas por mídias de grande acesso para a incersão de física moderna no ensino médio – o caso LHC
(Universidade Federal de São Carlos, 2015-08-14)
Ortelan, Gabriela Brito
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Pierson, Alice Helena Campos
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https://lattes.cnpq.br/3749421379531019
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https://lattes.cnpq.br/2933773005140240
Scientific discoveries and large experiments usually become object for mass media and scientific disclosure. Contact with this material can, in many ways, contribute to the teacher's work in the classroom. This paper has the objective of studying the potential use of this material in the classroom, through the different dimensions this material can emcompass. Initially, a wide outlook of the insertion of modern and contemporary physics in high school is presented, with it's justifications and challenges. Some characteristics and possibilities for the use of scientific disclosure materials in class are also presented, under the viewpoint of authors located within this interface between education and communication. This paper focuses on what is called the "LHC Case", referring to media material associated to the particle accelerator LHC (Large Hadron Collider), as contextualizing elemnt for particle physics teaching, and also as motivator for other questions, like the relationship between science and society, among other things. A description of a set of newspaper articles about the LHC case published between 2006 and 2013 is presented, as well as a critical analysis of this set, using a few criteria such as the news theme, focus and content. From this analysis of the news, a minicourse was elaborated and ministered for students of UFSCar's college preparatory course, as a space for data collection, with the purpose of evaluating the potential use of media disclosed news in the selection and development of content related to modern physics in high school. Results point at the possibility of the use of news in classes, fulfilling different roles according to the teacher's objective. In the LHC case, the possibility of using news with different characteristics to motivate discussions which establish relations with science, technology and society has proven feasible and interesting, as it can contribute for the construction of a less distorted and more critical view of science, and giving meaning to the teaching of particle physics in high school.
Síntese e caraterização de MgxPb(1-x)TiO3
(Universidade Federal de São Carlos, 2015-08-14)
Nóbrega, Jaldair Araújo e
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Rodrigues, Ariano De Giovanni
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https://lattes.cnpq.br/4881530489438346
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https://lattes.cnpq.br/1566935477819559
We report the investigation of structural, optical and electrical properties of the MgxPb(1- x)TiO3 ceramic system produced by mechanosynthesis. The solid state reaction manufacturing method has been proved to be an efficient alternative to manufacture this type of material. By using Raman spectroscopy techniques it was possible observe the effects induced by pressure, from 0 up to 14 GPa, and by temperature from 10 up to 723 K for the samples with x ranging from 0.2 to 1.0. Complementary characterization techniques were also used, including X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Optical Absorption Spectroscopy and Electrical Impedance. XRD enabled the study of structural changes related to the increase in Mg concentrations. Raman analysis allowed the study of vibrational modes, in particular the transversely optical mode E(1TO) of lower frequency in order to characterize the phase transition from tetragonal-ferroelectric to cubic-paraelectric phases. From these results it was possible to construct a phase diagram that relates Mg concentration, temperature and hydrostatic pressure, yielding determine critical temperature (Tc) and critical pressure (Pc) in which phase transition occurs for each sample. Permittivity dielectric measurements were performed for each material, through which it was possible to compare the effects of Mg ratios in the modification of the values of these properties. Finally, a study of optical absorption as a function of Mg concentration was conducted, evidencing changes in gap energies related to the increase of Mg incorporation. The lowest values, 2.86 and 2.9 eV correspond to samples with concentrations of 0.4 and 0.2, respectively. Thus, from a technological point of view, these characteristics are interesting for applications in devices operating in the microwave region.
Novas distribuições em análise de sobrevivência envolvendo composição e correlação dentre as causas competitivas
(Universidade Federal de São Carlos, 2015-08-14)
Marchi, Vitor Alex Alves de
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Louzada Neto, Francisco
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https://lattes.cnpq.br/0963342295447680
In this thesis, we construct distribution functions for analysis of lifetimes with the focus in scenes of latent risks inspired in models of the carcinogenesis process. Some properties of these distribution functions are presented and discussed as well as the viability front the models in literature. In some cases the models were describes as long-time model where a part of population presents infinite lifetime, i.e, on the population in study some objects are not susceptible (or immunes) for the event of interest. Some models present complexity in the maximization and was necessary the implementation of routines of maximization that allows us the control some variables that are not offered in routines in tradicional programs. The implemented routine is available in appendix.
Evolução da demanda por assistência estudantil na UFSCar em função da implementação das ações afirmativas nos anos de 2007 a 2013
(Universidade Federal de São Carlos, 2015-08-14)
Pinheiro, Tatiana Bianchini
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Caron, Monica Filomena
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https://lattes.cnpq.br/3408975195954782
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https://lattes.cnpq.br/3784718795741003
This paper considers the evolution of the student´s needs for assistance in the Federal University of Sao Carlos (UFSCar), in Brazil, after the implementation of the Affirmative Actions by the year 2013. It is considered the year 2007 as previous reference implementation of Affirmative Action, which took place in 2008. The research topic was chosen on the grounds that their results relating to a partial analysis of the implementation of a public policy process, can contribute to improving the effectiveness of this policy. The overall objective of this research was to analyze whether there were changes in the demand for student assistance, and sought to also check whether, after the implementation of affirmative action, changes were needed in the work routines of ProACE (Sector of community and student affairs of the UFSCar) and in their departments directly involved with the student assistance. The research also presents the partial survey about the year of implementation of Affirmative Action in Brazilian federal universities, and to this end, consultations were held on the websites of these federal universities. The focus in this case was to understand the context in which the UFSCar was inserted when it decided to set affirmative action policies for admission of students. The method used is an exploratory research, based on documentary and field research. The conclusion of the study is that there was a great evolution in demand for student assistance in the analyzed period, as growth of 157% in the number of fellows, the tenfold increase spending on assistance grants and increasing by 84% the number places in student housing in addition to the creation, in 2011, of a home assistance fellow, but that can not be attributed only to the implementation of Affirmative Action, because until 2012 the UFSCar was involved in the process of expanding of REUNI (a government policy of expansion of places in Brazilian universities). Despite of the PROACE departments having to serve more students than they used to do, it was not observed significant changes in the routine to serve wider public benefited by student assistance.