1000 resultados para Função física
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For the development of this research the following general objective has been formulated, indicator of the process of inquiry: To discuss the relation between the attitudinal and the sportive contents presented in the proposal of Curricular Lines for the Physical Education of Young and Adults in Brazil. According to the corporeity and the ludicity, questioning the formation of the professional of Physical Education and delineating the perspective for a sport andragogy that values the Being and the Life. From this general objective, the following objectives, which had given greater specificity to the investigative process, were defined: 1. To create the theoretical context from the corporeity/ludicity axis, articulating transversally sportive knowledge, aiming to contribute for a sport Andragogy; 2. To analyze the objectives proposed for the Physical Education of Young and Adults according to an elaborated theoretical reference and to the testimonies of the egresses of 2005 of the Physical Education course of the UFRN. 3. To interpret the relation between attitudinal and educative content from the academic reality lived by the egresses of the Physical Education course of the UFRN. 4. To understand the most urgent necessities of sustained formation of the egresses of 2005 for satisfactory performance with the Physical Education of Young and Adults. 5. To propose perspectives for the construction of a sport Andragogy from the corporeity/ludicity axis. In attendance to the nature of this research and as form of guiding ourselves in this epistemological adventure, the following ones had been basically and theoretically estimated. 1. Corporeity is a radiant focus, prime and main of educational criteria; 2. The task of the education must be carried through with men and not for men; 3. Man must only play with the beauty and with the beauty he only must play. ; 4. The sportive education must be based on esthetic and fair play. The adopted research approach is of a qualitative nature, using the interview procedure with a group consisting of twelve egresses of the Physical Education Course of the UFRN of the year of 2005.2 After the discussion of the results on the attitudinal objectives and content for the Physical Education for Adults and Young, the study shows nine themes presented by the investigated group as priorities for their sustained formation, aiming at the performance of the professional of Physical Education with the EJA: inclusive experiences; leisure and quality of life; relationships; body and personal care; social values; self esteem; sportive phenomenon; EJA training; attitudinal contents. As a contribution to the construction of knowledge for a Andragogy of Sports, the study presents a metaphorical structure called Galaxy of Knowledge righteous Glamor of integrating nine elements inspired by the Ode to the Sport of Pierre de Coubertin: life, beauty, justice, daring, honesty, joy; Fertility; progress; peace. At the heart of the structure of knowledge is righteous install a system that articulates five principles ludopoiético epistemological function of connecting with the righteous knowledge of the sport that must integrate the content attitudinal proposed for Fitness for Youth and Adults in order to facilitate the realization of their objectives proposed for this method of teaching
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Introduction: The emergence of High Active Antiretroviral Therapy (HAART) increase the life expectancy of the persons living with HIV/AIDS (PLHIV), therefore the prolonged use cause metabolic implications and influences on body fat distribution and increase the cardiovascular diseases prevalence. Aims: Evaluate the effect of resistance training on heart rate variability, biochemical parameters and somatotype on PLHIV. Methods: Participated this study seven sedentary men, with age above 25 years old, living with HIV/AIDS, under HAART use. Were submitted a 16 week intervention with resistance training. Evaluated the heart rate variability, biochemical parameters and somatotype, before, after 8 weeks and 16 weeks, all in paired form. It was found the data normality by Shapiro-Wilk test and conducted the Anova one way combined with Tukey post hoc to samples in each evaluate moment, adopting significance level p<0,05. Also were calculated percentage change deltas. For somatotype was used the somatotype spatial distance (DES), obeying the significance value DES≥1. Results: Was found significance differences only in variable final heart rate delta 60s (p=0,01), however, is not showed changes on heart rate variability, biochemical parameters and somatotype components. Conclusion: 16 weeks of resistance training showed improvement on heart rate recovery after submaximal effort and, despite is not enough to produce significance differences on biochemical parameters and somatotype components, could be realize improvement on average value of fasting glucose and lipid profile, as well as reducing the endomorphic component
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A colheita mecanizada é ferramenta fundamental no processo produtivo das grandes culturas; se não for realizada adequadamente, poderá resultar em danos mecânicos severos às sementes, acarretando, prejuízos significativos na colheita, particularmente devido à redução da qualidade. Visando a avaliar os danos causados na colheita mecanizada de soja, o presente trabalho teve como objetivo estudar o efeito do sistema de trilha axial sobre a percentagem de bandinhas, impurezas e sementes quebradas de soja cv. M-Soy 8001, em função da velocidade de trabalho e rotação do cilindro trilhador. O delineamento experimental utilizado foi o inteiramente casualizado, em parcelas subdivididas, avaliando-se duas rotações do cilindro trilhador (400 e 500 rpm) e três velocidades de operação (3,5; 4,5 e 5,5 km h-1), com três repetições. Os resultados obtidos indicam que as combinações de velocidade de operação e rotações do cilindro de trilha avaliadas não afetam as variáveis vigor, impurezas, bandinha, emergência em areia e índice de velocidade de germinação e que o aumento da rotação de 400 para 500 rpm ocasiona o aumento de sementes quebradas.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Many discussions about the role of the school are on the agenda, in an increasingly complex society. Sociologists, educators, anthropologists, researchers of different areas seek that role. The objective of this dissertation is to contribute what we can consider the central role for the physics teaching, citizenship training. We have elaborated a didactic proposal to increase the interest of high school students on issues of social relevance and, throughout it, to promote the formation of attitudes of social responsibility, enhancing the formation of a more politically and socially active citizen. For the preparation of the proposal, studies were made on education for citizenship and on attitudes change, using as its main theoretical foundation the researches on the Science, Technology and Society curricular emphasis. The teaching of Nuclear Physics was integrated to our proposal, due to its pedagogical potential for the discussion of social, political and economic subjects related to scientific concepts and associated technologies. The educational proposal we have produced was applied on a high school class of a private school at Natal-RN. It was composed from the controversial issue involving the installation of nuclear power plants in Brazilian northeast. The methodology of role playing, in which students assumed social roles and produced specific subsidies for a public hearing and a later referendum, both simulated. In the analysis of the implementation of the proposal, we highlighted the difficulties but also the possibilities and the relevance of exercising skills such as reasoning, finding information, and arguing about of social problems. The results of the research showed the possibility of meaningful learning on Nuclear Physics contents, through this social, political, economic, scientific and technological contextualization using a controversial and real issue together with mechanisms that trigger for greater popular participation, as public hearing. It has also been identified changes in attitude by some students about issues related to Nuclear Physics. We hope, through this dissertation, to contribute to the formation of future citizens as well as to the initiative of teachers-researchers with pedagogical aims similar to those in the present work
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In the present work we use a Tsallis maximum entropy distribution law to fit the observations of projected rotational velocity measurements of stars in the Pleiades open cluster. This new distribution funtion which generalizes the Ma.xwel1-Boltzmann one is derived from the non-extensivity of the Boltzmann-Gibbs entropy. We also present a oomparison between results from the generalized distribution and the Ma.xwellia.n law, and show that the generalized distribution fits more closely the observational data. In addition, we present a oomparison between the q values of the generalized distribution determined for the V sin i distribution of the main sequence stars (Pleiades) and ones found for the observed distribution of evolved stars (subgiants). We then observe a correlation between the q values and the star evolution stage for a certain range of stel1ar mass
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In the first part of this work our concern was to investigate the thermal effects in organic crystals using the theory of the polarons. To analyse such effect, we used the Fröhlich s Hamiltonian, that describes the dynamics of the polarons, using a treatment based on the quantum mechanics, to elucidate the electron-phonon interaction. Many are the forms to analyzing the polaronic phenomenon. However, the measure of the dielectric function can supply important information about the small polarons hopping process. Besides, the dielectric function measures the answer to an applied external electric field, and it is an important tool for the understanding of the many-body effects in the normal state of a polaronic system. We calculate the dielectric function and its dependence on temperature using the Hartree-Fock decoupling method. The dieletric function s dependence on the temperature is depicted by through a 3D graph. We also analyzed the so called Arrhenius resistivity, as a functionof the temperature, which is an important tool to characterize the conductivity of an organic molecule. In the second part we analyzed two perovskita type crystalline oxides, namely the cadmium silicate triclinic (CdSiO3) and the calcium plumbate orthorhombic (CaPbO3), respectively. These materials are normally denominated ABO3 and they have been especially investigated for displaying ferroelectric, piezoelectric, dielectrics, semiconductors and superconductors properties. We found our results through ab initio method within the functional density theory (DFT) in the GGA-PBE and LDA-CAPZ approximations. After the geometry optimization for the two structure using the in two approximations, we found the structure parameters and compared them with the experimental data. We still determined further the angles of connection for the two analyzed cases. Soon after the convergence of the energy, we determined their band structures, fundamental information to characterize the nature of the material, as well as their dielectrics functions, optical absorption, partial density of states and effective masses of electrons and holes
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Students, normally, present an irregular sleep pattern characterized by delays in sleep onset and offset from weekdays to weekends, short sleep duration on weekdays and long sleep duration on weekends. The reduction of the necessary sleep and the irregularity in the sleep patterns provoke relevant short- and long-term impairments on performances, for example, in cardiorespiratory function. The cardiorespiratory performance represents, in addition to fitness, traces associated to health conditions and in several studies to pattern and/or individual s sleep quality. The aim of this study was to evaluate the pattern of the sleep-wake cycle and the cardiorespiratory function of medical students under different class schedules. The study was accomplished with two classes of medical students of UFRN, one had classes at 7 am (n = 47) and the second had classes at 8 am (n = 41) during the week. On the first stage of the study all volunteers filled out an anamnesis, the International Physical Activity questionnaire, the Pittsburgh index of sleep quality, the Portuguese version of the Horne and Östberg cronotype questionnaire, the Health and Sleep questionnaire and the Epworth Scale of Somnolence (ESS). On the second stage, 24 students (12 of each class) had their activity rhythm monitored by actimeters set to record activity at a 2-min interval for 14 days concomitant to the completion of the sleep diary. In this same stage, each volunteer performed the effort test (treadmill) only once in the morning period (between 9:00 and 11:00). The students showed an irregular pattern of the sleep-wake cycle and this irregularity is strongly influenced by the class schedules, in addition to the contribution of the academic demand, social activities and endogenous factors. The students who woke up earlier showed greater irregularity in the sleep-wake pattern. The earlier was the class schedule the worse was the sleep quality and the greater was the frequency of students with excessive diurnal somnolence. The classes schedules and the irregular pattern of the sleep-wake cycle did not show effect on the cardiorespiratory performance of the medical students. The performance on the test seems to be affected by other factors, which can be related to the pattern of the sleep-wake cycle or not. Therefore, it is suggested that the late start of classes provokes less irregularity on the pattern of the sleep-wake cycle. However, it was observed that this irregularity and the class schedule seem not to affect the cardiorespiratory performance directly
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Atualmente, no cenário nacional, a cultura da soja em plantio direto é muito utilizada na integração agricultura-pecuária. No ano agrícola de 2006/2007, no município de Selvíria (MS), entre as latitudes de 20 ° 18 ' 05S e 20 ° 18 ' 28S e as longitudes de 52 ° 39 ' 02W e 52 ° 40 ' 28W, foi analisada a produtividade da soja, em plantio direto, em função de alguns atributos físicos de um Latossolo Vermelho distroférrico. O objetivo foi selecionar, entre os atributos do solo pesquisados, aquele que melhor se apresentasse para explicar a variabilidade espacial da produtividade agrícola. Para isso, foi instalada a malha geoestatística para a coleta dos dados do solo e da planta, contendo 120 pontos amostrais, numa área de 4.068 m² e declive homogêneo de 0,025 m m-1. do ponto de vista linear e espacial, a elevada produtividade de grãos de soja pôde ser explicada em função da densidade do solo e da umidade volumétrica. A baixa variabilidade da maioria dos atributos do solo indicou que o plantio direto é um sistema que proporciona a homogeneização do ambiente físico do solo.
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A funcionalidade básica e o nível de atividade física são comumente prejudicados pelo envelhecimento, e podem ser influenciados pelos sintomas depressivos, estado cognitivo global e nível de escolaridade. Objetivo: analisar relação entre escolaridade e funcionalidade básica, nível de atividade física, sintomas depressivos e estado cognitivo global em idosos fisicamente ativos. Método: 53 idosos fisicamente ativos de ambos os gêneros responderam ao Questionário Baecke de Nível de Atividade Física, Escala Katz de Funcionalidade Básica, Mini-Exame do Estado Mental e Escala Geriátrica de Depressão. Utilizou-se o coeficiente de correlação de Spearman (p<0,05). Resultados: encontrou-se correlação significativa apenas entre escolaridade e estado cognitivo global; nível de atividade física, funcionalidade básica e sintomas depressivos não se correlacionaram significativamente com a escolaridade. Conclusão: a escolaridade não influenciou o nível de atividade física, funcionalidade básica ou sintomas depressivos, mas correlacionou-se com o estado cognitivo global, conforme descrito pela literatura, exercendo uma função protetora.
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Além da produtividade física e da conservação do solo, o cultivo protegido e o preparo do solo, na olericultura, requerem altos investimentos, muito trabalho e insumos externos. Assim, o objetivo deste trabalho, foi identificar combinações entre ambiente, preparo do solo e época de plantio capazes de melhorar o desempenho econômico e a produtividade da cultura da alface em cultivo orgânico, em Rio Branco, Acre. O cultivo foi realizado em quatro tipos de ambientes: 1 - sombreamento proporcionado em 52% sob latada de maracujá; 2 - 35% de sombreamento sob estufa; 3 - 50% sob tela de sombreamento; e, 4 - cultivo a pleno sol (testemunha), considerando cada ambiente como um experimento, que avaliou-se três preparos de solo (plantio direto, cultivo mínimo e preparo convencional) em duas épocas de plantio (estiagem e chuvosa), sob delineamento de blocos ao acaso, com quatro repetições. Considerou-se como custo de produção a soma de todos os valores (insumos) e operações (serviços) utilizados no processo produtivo, incluindo-se os respectivos custos alternativos ou de oportunidade e a depreciação das instalações. O cultivo em estufa e sob tela de sombreamento aumenta a produtividade em época de estiagem, enquanto em época chuvosa, a produtividade é maior em cultivo sob estufa. O plantio direto e cultivo mínimo a pleno sol ou cultivo mínimo sob tela de sombreamento promovem maior produtividade no preparo convencional do solo. Proporcionam lucro supernormal (RMe > CTMe): o cultivo na época chuvosa (verão); sob sombreamento de latada de maracujá-amarelo; a pleno sol; o preparo convencional do solo sob latada e o plantio direto a pleno sol.
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O objetivo deste trabalho foi determinar o efeito de culturas de inverno e de primavera no crecimento do sistema radicular e na produtividade da soja, e comparar um método direto (trado) com um indireto (com rubídio), na análise do sistema radicular. Utilizou-se o delineamento experimental de blocos ao acaso, em parcelas subdivididas, com quatro repetições. As parcelas foram constituídas pelas culturas de inverno, triticale (X Triticosecale) e girassol (Helianthus annuus), e as subparcelas pelos culturas de primavera, milheto (Pennisetum glaucum), sorgo forrageiro (Sorghum bicolor) e crotalária júncea (Crotalaria juncea), além da escarificação, realizada em 2003 e 2009. A soja (Glycine max) foi cultivada no verão e seu sistema radicular foi avaliado por amostragem física das raízes, com trado, e por avaliação da atividade radicular com rubídio. Modificações na arquitetura ou na atividade do sistema radicular da soja não afetaram a produtividade. A distribuição física e a atividade radicular não foram afetados significativamente pelas espécies de inverno, mas o crescimento foi favorecido após o cultivo do milheto e do sorgo forrageiro, na primavera. A medida direta do sistema radicular com trado apresenta baixa correlação com a atividade radicular.
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O objetivo deste trabalho foi avaliar as alterações nas propriedades físicas de substratos em função de sua reutilização para o cultivo do tomateiro do grupo cereja, cultivar Sindy. O delineamento experimental adotado foi em parcelas subdivididas com os sete substratos (nas parcelas) e três épocas de caracterização física dos substratos (nas subparcelas). As parcelas foram agrupadas em blocos casualizados, com quatro repetições. Os sete substratos resultaram da combinação de diferentes proporções volumétricas de três componentes: areia, bagaço de cana-de-açúcar e casca de amendoim. As propriedades físicas dos substratos avaliadas foram submetidas à análise de variância, sendo as médias comparadas pelo teste de Tukey a 5% de probabilidade. A reutilização do substrato composto por partes iguais dos três componentes promoveu aumento da densidade seca e do volume de água facilmente disponível, e redução da porosidade total, do espaço de aeração e do volume de água remanescente.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)