A (re)construção de conceitos biológicos na formação inicial de professores e proposição de um modelo explicativo para a relação genótipo e fenótipo

This paper aims to investigate the conceptions about the relation between genotype and phenotype of Biological Sciences Degree students who take part in a research group in Epistemology of Biology. In an initial data collection, the presence of ideas based on a restricted to genes and environment relation - without considering the organism and its life history - became evident . However, during the group discussions on the topic there were other statements involving other concepts, such as: molecular interactions, chance, organism and Developmental Biology. The analysis of conceptual (re)constructions that emerged in the group allowed the proposition and the development of an explanatory model for the relation between genotype and phenotype.

Influência da resposta crônica sobre as variáveis hematológicas de indivíduos diabéticos tipo 2 submetidos a um treinamento misto de bola suíça

The main function of the immune system is the defense against infection, being composed by the leukocytes that modulate the immune response, which can be innate or adaptive. The physical exercise can causes positive or negative alterations in the total or relative number of leukocytes. When the exercise has a low or moderate intensity it`s considered beneficial for improving the function of the cells responsible for the defense and to reduce the risk of infectious illnesses. The type 2 diabetes is related to an incapacity of the body in rightly respond to insulin, associated to an resistance to its actions. The purpose of this research was to make a study of the immune system characteristics, as well as the type 2 diabetes and the relation among both and the physical exercise. So, it was analyzed a group of type 2 diabetics coming from Diabetics House of Franca -SP, treated through a program of mix physical training. Two collections of blood were pre and post training program for the pair comparable of the participants. It was found positive alterations of the subpopulations of leukocytes that show a probable improvement of the immunological state what allows us to suggest about a possible improvement of the immunological activity, what would be measured by the activation of these cells forward to an inflammatory/infectious condition. So, we suggest that future studies involving diabetes, immune system and physical exercise be encouraged.

Modelo mecânico para estruturas lineares em concreto armado - uma abordagem acoplada entre a mecânica do dano e algoritmos de otimização

Modelos escritos através dos conceitos da Mecânica do Dano no Contínuo representam atualmente uma alternativa consistente para a simulação numérica do comportamento de estruturas constituídas por materiais quase frágeis, onde a perda de rigidez em função da fissuração crescente é o fator preponderante da resposta não-linear de seus elementos estruturais. No entanto, modelos de dano apresentam forte dependência de parâmetros internos usados para descrever os critérios e evolução das variáveis de dano, que devem ser calibrados adequadamente para uma resposta mecânica coerente da estrutura. Neste contexto, o artigo mostra um estudo sobre a calibração de parâmetros do modelo de dano de Mazars e sua aplicação na análise numérica de vigas e pórticos planos em concreto armado. O Método dos Mínimos Quadrados é adotado para resolver o problema, em conjunto com a técnica de Gauss-Newton. Em virtude da ausência de resultados experimentais para diversas classes de resistência do concreto, como referência para o processo de calibração, são adotados alguns modelos constitutivos teóricos tanto à tração quanto à compressão. Esse processo de calibração de parâmetros é incorporado a um modelo mecânico em elementos finitos para análise de barras em concreto armado, com a consideração conjunta dos mecanismos complementares de resistência ao cisalhamento, como efeito de pino, armadura transversal e engrenamento de agregados. Uma lei constitutiva exponencial para o decaimento da resistência à tração do concreto é proposta com o objetivo de simular o comportamento do tipo tension softening do material. Testes de simulação envolvendo o modelo proposto foram realizados, comparando-se com resultados experimentais e numéricos mostrando a boa precisão e capacidade de obtenção de cargas últimas em estruturas de barras em concreto armado.

As demonstrações experimentais e suas implicações na motivação dos alunos para o aprendizado de conceitos científicos

As demonstrações experimentais são atividades de grande tradição na História da Ciência, sendo realizadas desde 1660 na Royal Society, por grandes expoentes da Física, com o objetivo de promover a divulgação dos conhecimentos científicos desenvolvidos.Com o objetivo de contribuir com a melhoria e o interesse dos alunos pelos estudos das Ciências Exatas, bem como a conscientização destes sobre conceitos relacionados à Energia e seu impacto sobre a sociedade e sobre o meio ambiente, temos realizado atividades de demonstrações experimentais, denominadas de “Show de Energia”, nas escolas públicas de Ensino Médio de cidades da Região de Guaratinguetá, interior do Estado de São Paulo. Em cada um dos shows realizados entrevistamos os alunos, através de um questionário estruturado, buscando avaliar o impacto dessa atividade na motivação dos estudantes para o aprendizado de conceitos científicos. Os resultados apontam para a grande influência que a realização dos shows tem exercido sobre a motivação dos estudantes.

Variáveis antropométricas e hemodinâmicas em relação a diferentes níveis e categorias de atividade física

This study aimed to investigate the relation between physical activity levels (PAL) of hypertensive patients, seeing different do- mains, and, to compare anthropometric variables and blood pressure (BP). The survey was conducted with 192 patients, mean age 63 ± 11 years. The anthropometric variables were body weight, body mass index (BMI) and waist circumference (WC). PAL was estimated using Baecke ́s questionnaire and categorized in four domains (OPA = occupational; leisure time = LTPA; locomotion = LPA and Total PA). Student t test unpaired was applied for comparisons between active and insufficiently active. Differences between active and sedentary in relation to anthropometry and resting blood pressure were observed for the LTPA, LPA and Total PA and significant negative correlations were observed between LPA and Total PA with systolic BP (p<0,05). Conclusion: the LPA and LTPA were associated with resting BP in hypertensive. No differences in BMI and WC among physically active and insuffi- ciently active were found.

Os conceitos de ambiente, meio ambiente e natureza no contexto da temática ambiental: definindo significados

We present some clarifications that enable us to identify differences between the expressions nature, the environment and environment. This is not an epistemological approach, but rather reflections on these expressions refer and the implications for environmental issues and hence to Science Teaching. The nature was understood as a complex of real entities, which are capable to be thinking through perception. This same entity when is represented by a mind, become what we call the environment. This expression, in turn, is characterized not only by adding the environments species that are known, but to be a human abstraction. When we consider the uniqueness of each species and organism, which in this environment is inserted, we call environment, this is, the elements that can be seen and on which the organism can act. Thus, we seek to develop a concept broader of environment, which is not restricted to the human species.

As pesquisas no campo da Comunicação e os conceitos de cultura

This paper aims to discuss the concepts of culture endorsed by Communication and the aftermaths of each option for the development of the researchs. It focus on American research, the Frankfurt School, Cultural Studies and the French contemporany thought.

O design inserido no vestuário infantil: um estudo sobre as roupas com conceitos lúdicos de aprendizagem

Among the current trends for children’s clothing is clothing that may contribute to the development and children’s learning through interaction with their clothes. For child interaction / clothes from occurring, this dress is appropriate the knowledge of design, which assist in its construction. Thus, this study seeks to investigate design principles that can be adopted for production of clothing that can assist in the development of children, showing how notions of education can be incorporated into costumes, studying the relationships and interactions between design, fashion and education. The study addresses this garment from the perspective of design, so as to provide insights that could contribute to the creation of the pieces. To that end, we developed a theoretical framework that sought to show the infant universe, communication, clothing and design. According to the methodological procedures for the work, there was a case study in ten private schools in Bauru-sp in order to obtain data on experiences with children about their preferences, attitudes and ways of reasoning child’s world.

Variáveis determinantes do desempenho em provas de curta duração em nadadores masters

Twenty-four masters swimmers participated in the study (42.0 ± 7.4 years, 1.74 ± 0.09 m, 74.8 ± 14.1 kg). Countermovement jump (CMJ) and 3 kg medicinal ball throwing (BM) were performed. At a 25 m swimming pool, each subject completed a maximal 50 m front crawl swim with in water start, 25 and 50 m performances (T25, T50) were recorded. Anaerobic critical velocity (AnCV) was determined by the slope of the distance-time relationship (Dd-t) in the two swimming distances. T25 and T50 (respectively 19.0 ± 2.7-sec and 38.8 ± 6.4-sec) were correlated with CMJ (27.2 ± 5.0 m) (respectively, r = -0.78 and -0.73, p < 0.01), and BM (4.3 ± 1.0 m) (r = -0.68 and - 0.58, p < 0.01). AnCV25,50 (1.31 ± 0.23 m.s-1 ) was correlated with T25 (r = -0.92, p < 0.01 ) and T50 (r = -0.98, p < 0.01). The strength parameters turn out to be important in aquatic performance in masters swimmers and AnCV may be relevant in the training of masters swimmers.

Conceitos ecológicos estruturantes: investigando o pensamento de futuros professores de Ciências Biológicas

Pós-graduação em Educação para a Ciência - FC

Produção do monóxido de titânio em estrelas variáveis

Mira are pulsating variable stars in advanced stages of evolution. Their atmospheres are sources of intense absorption bands attributed to molecular titanium monoxide (TiO). It has been suggested that the abundance of TiO reaches its maximum value near the minimum light. In this sense, the study of the processes of formation and destruction of TiO in circumstellar envelopes of Mira stars, not only allows us to understand the physical and chemical processes that occur in these environments, as it allows to verify the correlation between the abundance of TiO and its light curve. However, the main mechanisms of formation and destruction of TiO are poorly known and, consequently, the possible correlation between the abundance of this species and the light curve. In these sense, we studied the main processes of formation and destruction of titanium monoxide in molecular layers of Mira atmospheres and determined its temporal variation as function of the stellar radius. The TiO profile along the radius was expected for the different stellar phase, however its abundance is not enough to explain the light curve. The reasons behind it are discussed in details

Efeitos de diferentes frações inspiradas de oxigênio sobre variáveis cardiorrespiratórias e histopatologia pulmonar em coelhos com cardiomiopatia dilatada, anestesiados com sevofluorano

Pós-graduação em Cirurgia Veterinária - FCAV

Geoprocessamento de variáveis morfométricas para caracterização da microbacia do Córrego do Petiço

This study aims to perform the morphometric characterization of the watershed stream Petiço, Botucatu-SP, through techniques of GIS by GIS IDRISI Selva and Charter planialtimetric Botucatu (SF-22-ZB-VI-3) , edited by IBGE (1969), scale 1: 50000 for ranking the drainage network and the morphometric analysis. The variables analyzed were the dimensions, the relief pattern, pattern of the drainage network and the shape variables. The results show that related to how the watershed has an oblong shape with environmental interpretation with low tendency to flooding and erosion. The sinuosity index of 1.22 shows that the channels of the micro tend to be somewhat sinuous, which allows to infer that is permeable soil with good water infiltration. Based on the results of the morphometric variables was found that the watershed is in good condition of conservation, however, presents certain risks of susceptibility to erosion, and environmental degradation in some points, being fundamental to the maintenance of vegetation cover, in view of the roughness coefficient (Rn). Thus, the evaluation of morphometric characteristics in the study watershed constitutes an important tool in conjunction with the use of GIS and Geographic Information Systems makes possible the planning and management of natural resources aimed at their conservation.