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GeoGebra e moodle no ensino de geometria analítica
(Universidade Federal de São Carlos, 2010-04-08)
Lucas, Rodrigo Dantas de
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Caetano, Paulo Antônio Silvani
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https://lattes.cnpq.br/0370219014539994
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https://lattes.cnpq.br/0034326475410715
This work involves the construction of a virtual learning environment (AVA) on fundamental concepts of Analytical Geometry (GA) using GeoGebra resources to be applied in a room of the 1st year of a Bachelor's Degree in Mathematics from a private college. Throughout its history the teacher develops ways of presenting the ideas you want to convey and that is the essence of pedagogical reasoning. As a teacher of this subject, I note in my career and the exchange of experiences with other professionals, a common sense about the mechanization of techniques and lack of connection between algebra and geometry, as in this discipline. Reflecting, experiencing and telling me about this issue, I think much of this problem in a limited way that we present these ideas in our classes. The advent of information technology, especially software for dynamic geometry, can provide greater ease in viewing this connection. Motivated by the possibility of using dynamic geometry software in the teaching of GA, the use of Moodle to create an AVA and inspired by the discipline of Information Technology for Teaching Science and Mathematics, the curriculum component of the Masters in Teaching Professional Exact Sciences, idealized this work from the construction of the 3D viewer in GeoGebra and the creation of an AVA in Moodle. The AVA has been divided into four modules with the following basics of GA: points, vectors, lines and planes. These grounds were presented through Moodle resources in the form of theory, lesson and evaluation. The activities were conducted as semi-distance (in the computer lab school) and totally distance (in their students). We hope with this work is expanding the size that most students have to GA and the fundamental connection between algebra and geometry existing in this discipline, and encourage the use of technological resources as teaching tools.
Estudo e desenvolvimento de blendas ternárias biodegradáveis a partir de poli(ácido lático), poli(álcool vinílico) e quitosana
(Universidade Federal de São Carlos, 2010-04-08)
Grande, Rafael
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Pessan, Luiz Antonio
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https://lattes.cnpq.br/8276650236213537
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https://lattes.cnpq.br/2232805898804829
The present study examined the use of poly(vinyl alcohol) as a compatibilizing agent between chitosan and PLA and as a diluent for chitosan in an approach where a dispersion chitosan in PVA produced by solution blending these materials are added to PLA in an melting procedure. We investigate ternary mixtures of PLA / PVA / chitosan system both the PVA / chitosan and the blends of PLA / PVA / Chitosan studied here were plasticized with glycerol to reduce the melting point of PVA and chitosan. The ternary blends were processed in a Haake rheometer at 140 °C with rotation of 80rpm. Measurements of FTIR, DSC, DMA were performed to verify the degree of mixing and characterize these compounds. It was observed that the presence of the blend PVA / Chitosan PLA results in changes in the crystallization upon heating and the presence of two valleys fusion indicating immiscibility of the system. The morphology of the blends was evaluated by scanning electron microscopy. The positive results of this processing method is innovative and represents a major advance in the study of polymer blends from natural polymers processed by melt processing. However, the biggest loss in mechanical properties observed in the ternary blends as well as the darkening of the dispersed phase during drying, suggest that the presence of solvent waste are sufficient to promote matrix degradation during processing.
Um ambiente virtual de aprendizagem para o ensino médio sobre tópicos de geometria analítica plana
(Universidade Federal de São Carlos, 2010-04-08)
Cunha, Mário César
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Caetano, Paulo Antônio Silvani
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https://lattes.cnpq.br/0370219014539994
;
https://lattes.cnpq.br/5039860041865580
This study presents the construction of a virtual learning environment on topics of plane analytic geometry and its application in classrooms of public high schools in the city of Barra Bonita, São Paulo, Brazil. The environment, implemented in Moodle platform of Distance Education is supported by dynamic geometric viewers idealized by GeoGebra. It approaches points in the Cartesian plane, the distance between two points, midpoint, barycentric, angular coefficient, alignment condition of three points, equation of a line, forms of equation of straight lines, relative positions of two straight lines and perpendicular straight lines. This virtual learning environment contains activities in two units implemented using the tools of Moodle, including WEB page, Lesson, Forum and Questionnaire, always founded in the learning theories of Piaget, Vygotsky and Ausubel. All of this seeks a construction of knowledge through the interactivity with the approached topics, in an autonomous way and respecting the self-paced learner. It also aims the understanding of the concepts in a practical and dynamic way, not limited to the dissemination of the information in a pre-defined static way. In the dynamic of such application, the virtual theoretical activities are followed by practical issues incorporating the content studied, with frequent assessments in the form of discussion forums, quizzes and tests with questions randomly selected from a database of the virtual environment. Despite the difficulties, the first unit can be successfully completed verifying a significant learning of the use of dynamic geometry simulators, with the students showing greater interest and focus on the approached issues.
Desenvolvimento da habilidade sentado para de pé em crianças
(Universidade Federal de São Carlos, 2010-04-08)
Costa, Carolina Souza Neves da
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Rocha, Nelci Adriana Cicuto Ferreira
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https://lattes.cnpq.br/2035754554780009
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https://lattes.cnpq.br/1279365864279654
Análise dos perfis de atuação profissional e de competências relativas à inteligência competitiva
(Universidade Federal de São Carlos, 2010-04-09)
Amaral, Roniberto Morato do
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Alliprandini, Dário Henrique
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https://lattes.cnpq.br/6958372164719600
With the aim of contributing to the improvement of efficiency and effectiveness of units of Competitive Intelligence (CI) in the area of people management, the goal of this study was to characterize the profile of Brazilian CI professional approach based on competencies, with a view to establishing the process of People management for competence-based (GPPC). Survey was the research method adopted and applied in the community of professionals involved in CI in Brazil. The results were: a) characterization of the professionals involved with CI b) indicators on the performance of CI in Brazil, c) identification of the attributes of competence of greatest need in carrying out intelligence activities d) identification of the modes of action as dedication to the functions of CI coordinator, analyst, collector, e) display the influence of experience in CI performance on the stages of intelligence, the abilities of the professional and the functions of CI and f) consolidation of a glossary of attributes competence (knowledge, abilities and attitudes) for CI. From the results obtained and the discussion arose around the issue of competence in CI, it was concluded that CI professionals have different profiles of competence according to their performance and professional experience, identified the professional profile and abilities on the CI, its real value to the area of CI will be achieved through the use and application potential in developing a comprehensive model of GPPC applied to teams of CI.
Função excêntrica dos músculos abdutores e rotadores laterais do quadril no controle dos movimentos do membro inferior e no rendimento funcional
(Universidade Federal de São Carlos, 2010-04-09)
Baldon, Rodrigo de Marche
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Serrão, Fábio Viadanna
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https://lattes.cnpq.br/8137335642635433
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https://lattes.cnpq.br/9854034655055173
Baile do Carmo: festa, movimento negro e política das identidades negras em Araraquara-SP
(Universidade Federal de São Carlos, 2010-04-09)
Tenório, Valquíria Pereira
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Monsma, Karl Martin
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https://lattes.cnpq.br/5133375697266421
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https://lattes.cnpq.br/6991656036901108
This PhD research examines the construction of identity in an annual celebration, a playful event known as Baile do Carmo, carried out by the black population of Araraquara for over 70 years. It is possible by means of a specific event to discuss the invisibility of this population in local history, including the dynamic process of construction affirmation of black identity. To do this, I analyze how this event took shape over various historical periods and its relations with the Brazilian black movement, showing the changes in the Baile and the nature of its presence in the collective memory of the black population. I also try to understand how the tradition of the Baile do Carmo was (re) created and its role in the fight against discrimination and racism. This party provides a way to discuss relations between black and white people in Araraquara. The examination of these relations was only possible through the collection of oral interviews with participants and non-participants, both black and white, as well as extensive bibliographic study of ethnic and racial themes.
Desenvolvimento cultural da criança na Educação Infantil: contribuições da Teoria Histórico-Cultural
(Universidade Federal de São Carlos, 2010-04-09)
Assis, Muriane Sirlene Silva de
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Mello, Maria Aparecida
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https://lattes.cnpq.br/8338726751746542
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https://lattes.cnpq.br/3283708100330653
The main issue in this dissertation is the process of child s cultural development in primary school (from 0 to 5 years old). We aimed at identifying whether the school and family contribute to children s cultural development, and how this process occurs, through the analysis of concepts from the children themselves, the teachers, the school director, the educational staff, school officials and students parents. The methodological procedures used were based on a qualitative approach; we collected data through semi-structured interviews and questionnaires. Cultural-Historical Theory served as the theoretical foundation for our work; therefore, we believe that cultural development results from appropriations and objectifications made by individuals from their social relations throughout life. Cultural development is a condition for individuals humanization. The data analyzed stated that the school and the family contribute to children s cultural development; however, this contribution was not so intentional or systematic. The social function of Primary School expressed by different participants in the survey was very similar and emphasized the role of school in children s preparation for Intermediate school (6-13 years old), and in the development of values and rules for living together. We realized that playing was appreciated both by children and adults, but children valued this activity by itself while adults often considered playing as a resource for learning school subjects, or simply as a way of occupying child s free time. Children s and adult s access to culture was restricted and limited, particularly to television, and that impoverished their possibilities of cultural development. Artistic and cultural activities were interpreted as didactical and pedagogical resources, and were rarely associated with leisure, fun, broadening of worldview, and thus, with cultural development. We hope, with the analysis undertaken in this research, to contribute to the thinking on the democratic and revolutionary dimension of the school in what concerns its role as an institution that should offer opportunities of access to increasingly sophisticated knowledge and experience, so that all children perform appropriations and objectifications that could result in their growing and continuous cultural development aimed at building a fairer and more equitable society.
Travessia de famílias camponesas migrantes nordestinas: entre a morada e o assalariamento
(Universidade Federal de São Carlos, 2010-04-13)
Aroni, Rafael
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Silva, Maria Aparecida de Moraes
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https://lattes.cnpq.br/6792025643983370
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https://lattes.cnpq.br/6684041286009385
The aim of this study was to analyze the impacts of migration and wage, driven by the expansion of the sugarcane sector in the Northwest Paulista, about ways to reorganize the nuclear families of migrant workers. We analyzed rearrange themselves as the gender roles played by members family before the new configuration of spaces of destination (Novo Horizonte e Mendonça/São Paulo). The investigation corresponded to the production of field data and theoretical modeldriven analytical forms of everyday resistance (Scott, 1990), taking into account the intersection between the scanning / patriarchal domination of women's work and domestic exploitation / domination of the male labor cutting cane. The methodology was oral history (tales, life histories, trajectories), and the production of a body of imagery. The data showed some changes of the patriarchal order of relations between genders, mainly on account of remuneration for work of women included in household chores in the homes of workers cut cane and other activities. We have identified opportunities to duties microrresistência female domestic tasks, namely: 1) face of male domination through the paid work outside the home, 2) speech and gestures that pointed to the renegotiation of housework. Although the patriarchal patterns prevail, they note, however, many cracks in its foundations. They noted also forms of resistance against discrimination to attribute belonging geographically to the struggle for recognition of the identity of the migrant. And practice of resistance to change work tools, in order to reduce the physical wear.
Mudanças nos conceitos de ansiedade nos séculos XIX e XX : da Angstneurose ao DSM-IV
(Universidade Federal de São Carlos, 2010-04-14)
Viana, Milena de Barros
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Simanke, Richard Theisen
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https://lattes.cnpq.br/5431145327759147
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https://lattes.cnpq.br/3053794724319601
Anxiety has been a well-studied subject for centuries. Nevertheless, as a circumscribed pathology, anxiety only appears in medical reports at the end of the 19th century, with the works of Sigmund Freud. From clinical observations, Freud detached Angstneurose ( anxiety neurosis ) from neurasthenia, also separating chronic anxiety from anxiety attacks. Although psychoanalytic classifications of anxiety were well-accepted until the mid 1900 s, in the following decades different factors contributed to re-orientate Psychiatry, particularly towards Biology. One important factor was the development of Psychopharmacology. With the so-called psychopharmacological revolution , which began in the 1960 s, the modern descriptive and operational - classifications of mental disorders appeared. The DSM-III (Diagnostic Statistical Manual of Mental Disorders, in its third version), published in 1980, inaugurates a new relationship between Psychiatry and Psychopathology, although its conception of mental disorder is not a very clear one. The birth of panic disorder as a nosological category is particularly related to this change in perspective, since it takes place from the pharmacological observation of the therapeutic effects of a new drug, imipramine. In this sense, the purpose of the present study is to investigate the concepts of anxiety adopted in Psychiatry, particularly from the second half of the 19th century until the development of the DSM-IV. At first, the present study will focus on the development of Angstneurose as a clinical entity, by Freud. For that, a brief examination of the clinical terms adopted to designate anxiety states before Freud s time will be performed. Also, the transformations of the Freudian ideas concerning anxiety will be discussed, from a conceptual and diagnostic stand point. In a second moment, the historical evolution of what the diagnostic manuals for mental disorders call anxiety disorders will be investigated, emphasizing the reorganization that these new classification systems bring to the understanding of the concept of anxiety. An attempt to establish a parallel between these new nosological entities and the Freudian categories will be performed. At last, possible points of intersection between Psychiatry and Psychoanalysis, which might contribute to a better understanding of mental phenomena, will be discussed, on the basis of Freud s incursions into Biology.
O discurso da justiça como equidade: significados contraditórios em conflito
(Universidade Federal de São Carlos, 2010-04-14)
Pereira, Ana Paula
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Miotello, Valdemir
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https://lattes.cnpq.br/9131819326282708
Our research examined the question of the meanings of Justice; Do we live in a social group where Justice has the fundamental principle of equity among all of its participants? Is this notion of equity an eternal truth? Perhaps it is only an idealism in language or an idealism of the laws which control our social organisations? Exploring the meanings of Justice, our focus was on speech construction, developed by the magazines Veja and Isto é when they reported on the Primeiro Comando da Capital in May 2006.Our objective was to examine how social groups recognise and value themselves at times of social instability. Do all the members of the social group consider themselves as equals? Our epistemology was Dialogism, developed by the Russian philosopher, Mikhail Bakhtin. Using his methodology we identified in the corpus, the construction of two speech genres: one creating fear, and the other, pedagogic. On the one hand, the magazine reports displayed the development of a speech full of fear for the destabilisation of the dominant social group s order. We also identified the construction of a pedagogic speech which instructed the State to resolve the problems from social destabilisation. In both speech genres, we identified the presence of ideologies which indicated the lack of social equity among all the members of the group.
Papel preventivo do exercício físico nas alterações observadas na via de sinalização insulínica induzidas pela Dexametasona
(Universidade Federal de São Carlos, 2010-04-14)
Dionísio, Thiago José
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Cardoso, Sandra Lia do Amaral
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https://lattes.cnpq.br/2030708742766455
Peripheral insulin resistance is the major side effect after chronic dexamethasone (Dexa) treatment, which is widely used to control inflammatory diseases. On the other hand, exercise training increases insulin-dependent muscle glucose uptake and attenuates hyperglycemia and hyperinsulinemia induced by Dexa treatment. This study investigated whether exercise can modulate the insulin-dependent glucose uptake pathway in order to attenuate the peripheral insulin resistance induced by Dexa treatment. Eighty rats were distributed into 4 groups: sedentary control (SC), sedentary treated with Dexa (SD; 1 mg/kg per day, i.p.), trained control (TC) and trained treated with Dexa (TD). These rats underwent a training period where they were either submitted to a running protocol (60% of physical capacity, 5 days/week for 8 weeks) or kept sedentary. After this training period, the animals underwent Dexa treatment (10 days) concomitant with training. Body weight was measured weekly before treatment and daily during the treatment. Blood glucose was measured at the beginning, after five days and at the end of experimental protocol (one touch ultra test). An ipGTT was performed at the end of the experimental period. After an overnight fast, the rats were anesthetized. After collection of an unchallenged sample (time 0), a solution of 50% glucose (2.0 g/kg body weight) was administered into the peritoneal cavity. Blood samples were collected from the tail at 30, 60, 90 and 120 min for determination of glucose concentrations and calculations of the area under the glucose curve (AUC). The western blot technique was performed to identify IRS-1, PKC-α and p-AKT protein expression in the tibialis anterior (TA) muscle. During the training period, the increase of body weight was similar among the groups. Dexa treatment body weight and exercise did not attenuate this reduction. Exercise training did not alter fasting blood glucose. Dexa treatment significantly increased glycemia in both groups, sedentary animals (SD = +157%) and trained animals (TD = +98%). However, training attenuated this increase since TD was 22% lower than SD groups. The AUC was 39% higher for Dexa-treated rats, but exercise attenuated this peripheral insulin resistance. Dexa significantly reduced IRS-1 (-58%), PKC-α (-44%) and p- AKT (-48%) protein expression in the TA muscle. Moreover, exercise per si increased protein expression of IRS-1 (112%), PKC- α (17%) and p-AKT (93%). Also, exercise blocked these protein expression reductions after Dexa treatment. These results demonstrates for the first time that exercise training can prevent the reductions of IRS-1, p-AKT and PKC- α protein expressions induced by Dexa in the skeletal muscle. Therefore, exercise may be a good strategy to prevent dexamethasone-induced peripheral insulin resistance. Financial support: FAPESP
Complexos de Ru e Pd com bases de Schiff de ditiocarbazatos com interesse bioinorgânico e quimioterápico
(Universidade Federal de São Carlos, 2010-04-16)
Graminha, Angelica Ellen
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Batista, Alzir Azevedo
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https://lattes.cnpq.br/6469642481998660
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https://lattes.cnpq.br/5346291554255235
The present work reports the synthesis of dithiocarbazate Schiff s bases, which are versatile ligands with a significant interest due to both property and biological application. The focus of this study was the synthesis of bidentate, tridentate and tetradentate Schiff s bases derived from acetophenone, 2-acetylpyridine, benzylacetylacetone and 2,6-diacetylpyridine with S-benzyl and S-pnitrobenzyldithiocarbazate. Such ligands have been characterized through melting point, vibrational absorption spectroscopy in infrared region, elemental analysis, RMN 1H, gCosy gHSQC and gHMBC and electrochemical studies. The crystallographic structure of the ligand S-benzyl-N-(acetophenone)dithiocarbazate (AcFBz) was given. During the characterization of the ligands S-benzyl- (FACACBz) and S-p-nitrobenzyl-N- (benzyacetone)dithiocarbazate(FACACBzNO2 ) the formation of a cyclic ligand, which keeps the molecular formula of the originally proposed structure, was found. From the ligands derived from benzylacetone (FACACBz and FACACBzNO2), 2-acetylpyridine (AcpyBz and AcpyBzNO2) and 2,6-diacetylpyridine (DAPBz e DAPBzNO2), palladium (II) complexes( [Pd(FACACR)PPh3], [Pd(AcpyR)PPh3]PF6 and [Pd(DAPR)] ) have been synthesized with R= Bz or BzNO2. These compounds have been characterized through several techniques and the structure of the complexes [Pd(FACACBz)(PPh3)] and [Pd(FACACBzNO2)(PPh3)] was given. The electrochemical studies of the complexes [Pd(FACACR)PPh3] and [Pd(AcpyR)PPh3]PF6 (R= Bz ou BzNO2) showed distinct electrochemical behavior. Both complexes [Pd(FACACR)PPh3] and [Pd(AcpyR)PPh3]PF6 contain irreversible potential, while the [Pd(FACACR)PPh3] complexes are oxidized by PdII/PdIII and the [Pd(AcpyR)PPh3]PF6 complexes show reduction potential of PdII/PdI. Furthermore, complexes of ruthenium (II) with ligands derived from both 2-acetylpyridine (AcpyBz, AcpyBzNO2) and acetophenone (AcFBz and AcFBzNO2) with different precursors, such as [RuCl2(PPh3)3] and [RuCl2(dpbp)(PPh3)], have been studied. All ruthenium complexes are neutral, because the ligands are anionic due to the deprotonation of one of the nitrogen from the chain. Thus, the ruthenium compounds with bidentate ligand AcFBz and AcFBzNO2 present a xvii general formula [Ru(L)2(PPh3)2] and [Ru(L)2(dppb)], while the tridentate ligands AcpyBz and AcpyBzNO2 form [RuCl(L)(PPh3)2] and [RuCl(L)(dppb)] complexes. The crystallographic structure of the complex [RuCl(AcpyBz)(dppb)] was given. Ruthenium (II) complexes have also been synthesized through Schiff s bases derived from 2,6- diacetylpyridine DAPBz and DAPBzNO2.These compounds, as well as the respective palladium complexes, showed low solubility restricting the use of some techniques in order to characterize them. Cytotoxicity assays of both compounds and their respective ligands have been carried out on cell lines K562 (leukemia myeloid akut), S180 (Murine ascitic Sarcoma) and MDA-MB231 (breast cancer), except the Pd and Ru compounds containing the DAPBz e DAPBzNO2 ligands, due to their low solubility. Cellular viability assays have been carried out in order to ascertain the cytotoxicity of both complexes and their ligands in vitro. In some cases the complexibility improved the activity whereas it has generated selectivity to the complexes in others.
Das glebas aos continentes: um diálogo sobre indicadores socioambientais
(Universidade Federal de São Carlos, 2010-04-22)
Peron, Darci
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Sato, Michele
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https://lattes.cnpq.br/9264997837722900
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https://lattes.cnpq.br/6829878694060568
This study has been carried out in a rural settlement of the Agrarian Reform National Institute Wesly Manoel dos Santos, also known as Gleba Mercedes V, located in the municipal district of Sinop, Mato Grosso. It involves elements for the analysis of Human Welfare of people settled there, through three socio-environmental indicators: the Ecological Footprint, the Human Development Index and the Happiness Index. Based on the case study methodology, this research triangulates quantitative and qualitative data and it uses the following methods: 1- the Ecological Footprint Method through the variables: water consumption, power, fuel and wastes generation; 2- the Happy Planet Index Method, which relates Happiness to the Ecological Footprint, in which the program: Statistical Package for Social Sciences (SPSS) has been used, in order to systematize the gathered data; and 3- Method adopted by PNUD to check the Human Development Index, through the variables of longevity, education and health. Through these collected data and the figures found for the three magnitudes: Ecological Footprint, Happiness Index and Human Development Index, we have examined the impacts brought about by the activities put into practice by the inhabitants of that community in the natural environment, life pattern of the inhabitants and their happiness, trying to assess the human welfare condition of the community dwellers, aiming to evaluate the sustainability degree of the referred settlement. Using a previously structured questionnaire we could assess the satisfaction level towards life, which is 5.62 (in a 0 to 10 scale). Based on the Happy Planet Index Method, through the relationship between the local Ecological Footprint and the satisfaction level, we have calculated the Happiness Index of 0.68 (in a 0 to 10 scale). Both the quantitative and the qualitative data have been gathered between January to December, 2008. After the analysis of the results of the Ecological Footprint: 0.433 gha/per capita and the Biocapacity: 6.34 gha/per capita, the settlement can be considered ecologically sustainable and we can say it presents a confirmed ecological superavit.
Políticas públicas na bacia hidrográfica do Rio das Mortes Mato Grosso-Brasil: educação ambiental para vidas
(Universidade Federal de São Carlos, 2010-04-22)
Nápolis, Patricia Maria Martins
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Sato, Michele
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https://lattes.cnpq.br/9264997837722900
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https://lattes.cnpq.br/4594780742425829
The Mortes River basin (MRB) is located in the eastern state of Mato Grosso, with its source in the Serra São Lourenço, Campo Verde (MT) and flows into the Araguaia River, in São Félix do Araguaia (MT), its extension is 1070 kilometers. Its total area of twenty one municipalities covering the whole basin is 61.662,20 square kilometers, or 6.82% of the total area state. There are records of recent decades that show a intense expansion of areas converted for use in agriculture and livestock. This study aimed to devise strategies for environmental education in the formulation of public politics in the Mortes River basin (MRB) Mato Grosso - Brazil. This research was divided into two parts: characterization of environmental processes and environmental education, using instrumentation and data acquisition, digital processing of results, document analysis, questionnaires and interviews. As a result of the main features of the physical environment of MRB was possible the preparation of thematic maps: geology, geomorphology, pedology, vegetation, hydrography, and protected natural areas. As a result of the main features of the physical environment of MRB was possible the preparation of thematic maps: geology, geomorphology, pedology, vegetation, hydrography, and protected natural areas; allowing the idealization of an array of environmental education for the eleven municipalities studied. The MRB is threatened by indiscriminate deforestation that has occurred. Cases of silting up, water pollution, the destruction of the sources and reducing the water volume, has been widespread and is affecting the water use of the region residents. The tactics of environmental education for the Basin has suggested that value community involvement in finding solutions environmental participatory, and not decimate the natural landscape, the rural characteristics and culture of artesanal fishing, and to propose local economic alternatives.
Estudos químicos e microbiológicos de microrganismos associados à esponja marinha Dragmacidon reticulatum, objetivando o isolamento de metabólitos secundários bioativos
(Universidade Federal de São Carlos, 2010-04-22)
Mizuno, Carolina Megumi
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Seleghim, Mirna Helena Regali
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https://lattes.cnpq.br/5998337634888263
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https://lattes.cnpq.br/3879006027123565
Fungi are known as one of the most promising sources of unprecedent bioactive compounds, however, marine derived fungi are still very poorly studied. These microorganisms present high percentages of active metabolites and they are commonly isolated from marine invertebrates. At this study, the associated microbiota of the marine sponge Dragmacidon reticulatum was investigated in order to know the microbial diversity and explore the biotechnological potential of those strains for the production of bioactive secondary metabolites. Fragments from D. reticulatum were incubated on Petri dishes with different growth media. Forty five strains were isolated, although only 40 presented satisfactory growth for the preservation and production of extracts. From these, 32 strains were analysed for their genetic polymorphism through the ARDRA method that showed 24 different ribotypes. Extracts produced from the growing media of the 40 strains were evaluated for their cytotoxic and/or antimicrobial activity. From those, 22 presented biological activities in at least one of the bioassays, and had their chemical profiles evaluated in HPLC-UV-MS. Considering only the different ribotypes, 20 strains were selected by the biological activity of their extracts and were submitted to molecular identification. These isolates were attributed to the Aspergillus, Penicillium, Cladosporium, Myrmecridium, Microphaeropsis, Sporidesmium and Westerdykella genera. One strain was identified as actinobacteria from the Streptomyces sp. genus, and had its extract investigated, because the marine derived actinobacteria are also potential sources of bioactive compounds. The isolation of the unprecedented compounds _,_-dehydrocurvularin, the I-6, O-2 and JKL-4, produced by the fungus Penicillium decaturense, demonstrated the effectiveness of the screening procedures used in strain selection as producers of metabolites of biotechnical interest, and the need of more studies with this strain and the other strains selected in this study (Streptomyces sp., Westerdykella sp. and Sporidesmium sp.). The results confirmed the biotechnological potential presented by marine derived fungi.
Uma nova abordagem para análise de dependência bivariada
(Universidade Federal de São Carlos, 2010-04-23)
Marchi, Vitor Alex Alves de
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Louzada Neto, Francisco
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https://lattes.cnpq.br/0994050156415890
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https://lattes.cnpq.br/0963342295447680
In this dissertation we describe and implement procedures for nonparametric estimation of copulas and Sibuya function, and also procedures for bivariate analysis of dependence based on the behavior of their contours plot. Besisdes, we describe and implement the chiplot procedure and as well as a procedure for analising bivariate dependence in presence of censoring in the sample. Particularly, we propose a way to use it in a local correlation analysis. The performance of the proposed procedures are illustrated and evaluated in cases of very simple correlation, but also in a more complex correlation schemes.
Contribuição à paleoecologia da Amazônia Meridional na planície de inundação do Rio Teles Pires, do norte do Estado do Mato Grosso
(Universidade Federal de São Carlos, 2010-04-24)
Paixão, Jesus da Silva
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Fernandes, Marcelo Adorna
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https://lattes.cnpq.br/6709493251686592
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https://lattes.cnpq.br/1427011153695302
Records of isotopic and elemental carbon and nitrogen and pollen in lake sediments and soils have been used for studies of Quaternary paleoecology worldwide, including in the Amazon at specific sites, such as the region of Carajas, Lake Pata and Region Porto Velho in Rondonia state making it necessary to register in the central southern region. We collected two cores in the Lagoa Jabuti site and a core on the Site Três Coqueiros in the floodplain of the Teles Pires river in northern Mato Grosso state. The cores were analyzed for elemental and isotopic nitrogen and carbon (% C, % N, 13C, 15N and C/N), and palynology and radiometric dating by 14C via AMS. Was also used samples of Quaternary megafauna and elements of material culture. From the analysis carried out it appears that southern Amazon in the Mato Grosso there were no significant ecological changes during the study period, which is around 5,500 years B.P., except for the registration of a relatively sharp change in carbon isotope values for about 2,700 years BP. The pollen analysis of the sediment of Jabuti showed the predominance of elements on forest herb/fern coinciding with data from botanical surveys conducted in the area in which stand families Fabaceae, Arecaceae, Euphorbiaceae, Malvaceae, Combretaceae, Melastomataceae, Annonaceae, among the trees; Cyperaceae , Asteraceae, Chenopodiaceae, Poaceae, Achantaceae and Amaranthaceae between herbs and Polygonaceae, Cyatheaceae and Asplenium among the ferns. The megafauna considered in the paper presented by ESR beyond the age covered by the project and analyzed the material culture (ceramics) revealed that from the earliest moments of occupation (about 1,300 years BP) the ecological conditions of the region have not changed, although they have been registered large gaps in regional occupation that can be interpreted as a crisis in the supply of natural resources necessary for survival in the region.
Funções elíticas simétricas e aplicações em superfícies mínimas
(Universidade Federal de São Carlos, 2010-04-24)
Hancco, Alvaro Julio Yucra
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Villagra, Guillermo Antonio Lobos
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https://lattes.cnpq.br/6962956853017869
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https://lattes.cnpq.br/7678327516942131
In 1989, H.Karcher elaborated a method for the construction of minimal surfaces, denominated reverse construction method given in [10]. In that work it was rewritten the theory of elliptic functions using an approach more geometrical than analytical. This allows to better control the behavior and the image values of those functions, making it easier his application in minimal surfaces. In this master s thesis, we will present basic tools of the theory of symmetric elliptic functions, describing explicitly the symmetric ℘-Weierstraß and the function γ, that will be applied in the reverse construction method for an example of minimal surface.
Estrutura populacional do caranguejo-uçá, Ucides cordatus, (Linnaeus, 1763) (Crustacea, Brachyura, Ocypodidae) e sustentabilidade do extrativismo na reserva extrativista do Mandira, Cananéia, São Paulo, Brasil
(Universidade Federal de São Carlos, 2010-04-26)
Pereira, Alineide Lucena Costa
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Nordi, Nivaldo
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https://lattes.cnpq.br/8168865557947289
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https://lattes.cnpq.br/8864693433127558
The exploitation of Ucides cordatus is an important economic activity for the artisanal fisherman along the Brazilian coast, despite of it the scientific knowledge about the population dynamic of this resource is yet insufficient for the management proposals in same regions. The artisanally harvest of the mangrove crab is the second more important economic activity in the Reserva Extrativista Mandira (25º 01 015 S; 48º 02 160 W). This paper aims to evaluate the extractivism of that resource, supplying subsidies to the implementation of management regulations. As a contribution for the management plan of the RESEX Mandira a study on Ucides cordatus population structure was carried out at four mangrove forests during 24 months. Crabs were monthly sampled from January of 2006 to December of 2007. The nature stock was estimated by monitoring the density of crabs burrow in the mangrove forests. The yield and commercial system was described through interviews with the fisherman and monitoring of the monthly yields. In the year of 2009, fifteen fishermen have the crab harvest as their mean economic resource, the RESEX yields an annual production of 6,7 ton. in the period of 1999 to 2008. CPUE increase in the analysis of the all study period. A total of 809 crabs was sexed, registered its width and length of carapace, and fresh weight. The overall sex ratio was skewed toward males (471 ind., 58,2 %), not different from the 1:1 expected proportion. The mean size (carapace width) for male was 61,7 mm (± 1,09) and for females 56,6 mm (± 0,85); the mean fresh weight was 112,61 g (± 51,34) for male and 79,13 g (± 24,65) for female. Males were major distributed in the size classes of 65 to 75 mm, and females occupied the smaller size classes (55 to 65 mm). Juveniles occurred along the year round, but were represented for few individuals. Males and females presented a large association between the carapace width and fresh weight, both sexes presented isometric relation between these variables. Mean crab density and biomass, in the years of 2006 and 2007, was 2,13 specimens/m2 and 229,7 ton/ km2 fresh mass or 1.731,5 ton. Only large males were commercially harvested, their biomass was 184,7 ton/ km2. The biomass could be different between the mangrove forest analyzed according to their environment characteristics, accessibility and fishing history. The mean crab abundance in the year of 2006 and 2007 was 16.054.404 specimens (1.337.867 dozens).