984 resultados para conhecimento físico


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Este estudo tem como objetivo indicar um panorama geral sobre a produção de conhecimento no que tange os padrões para o desenvolvimento da narrativa oral, nos últimos quatro anos por meio de uma revisão bibliográfica sistematizada, voltada para a temática de intervenção em linguagem infantil, com o uso de narrativas orais. A revisão foi realizada em uma única etapa, com critérios específicos, utilizando os seguintes descritores: narrativas, narrativa, narrativas de crianças, linguagem e desenvolvimento, linguagem oral, habilidades linguísticas, linguagem falada, linguagem infantil, narração/narração de histórias e linguagem. O período considerado foi de 2007 a 2011. Foram obtidos 900 registros, dentre os quais, nove (1%) atenderam aos critérios estabelecidos para análise. A maioria dos estudos relacionou-se com análises psicolinguísticas. Apenas um estudo utilizou método experimental. No período considerado foram produzidos poucos estudos abordando narrativas orais infantis; a sua grande maioria levou em consideração, fundamentalmente, aspectos cognitivos e linguísticos no processo de desenvolvimento da habilidade narrativa; a grande maioria das pesquisas foi realizada com crianças que possuem algum tipo de alteração em seu desenvolvimento linguístico. Considera-se que a produção de conhecimento, em relação ao desenvolvimento de narrativas orais infantis, exige, atualmente, um olhar voltado para as intervenções que utilizem metodologia experimental. Por fim, considera-se que é necessária uma atenção maior em relação ao desenvolvimento típico da habilidade narrativa.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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During the dry and rainy periods, in the Piranhas-Assu river hydrographic basin, variations in bacterioplankton and trophic state indexes were studied in the lotic and lentic environments. The means of total bacterial density wavered in the order of 107 organisms. mL-1 and they were higher in the rainy period. Cocci bacteria were numerically predominant in all sampling points, influencing the total abundance of bacterioplankton. Total bacterial biomass varied from 659 to 1997,3 µgC.L-1 due to the high values of filaments cellular volume. Total phosphorus amounted 108 µg.L-1 and it had a positive correlation with chlorophyll a (r = 0,94; p < 0,05) during dry period, when these variables presented higher concentrations. There wasn t a high spatial variation. The low transparency of water and the phosphorus and chlorophyll concentrations indicated eutrophic or hipereutrophic levels in studied points of reservoir. These variables, associated with high density and biomass values found, alert to the necessity of a constant monitoring of the semi-arid aquatic ecosystems, where the quality of water is affected by dry occurrence

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The knowledge of the phytoplankton community, as an integral and dynamic processes of eutrophication, provides information essential for proper management and handling. A growing problem of cyanobacteria in reservoirs around the world as a result of artificial eutrophication processes, generating a particular concern, because some species produce cyanotoxins, which can cause adverse effects on human health. The present work aims to characterize the spatial and temporal dynamics of phytoplankton, assessing their potential as ecological indicator of water quality in reservoirs semiarid region. The samples of water were collected monthly between 2009 and 2011, at three points along the dam Armando Ribeiro Gonçalves / RN. In each sample were measured physico - chemical analysis of water and biological components. We conducted a scientific dissemination activity, with distribution and reading primer on eutrophication, informative talk about water quality, questionnaires and performing a play in a public school in the city of Itajá / RN. The reservoir was considered eutrophic in three points, taking into account the values of chlorophyll -a and phosphorus, adopted to characterize eutrophic environments of semi-arid areas. High density of cyanobacteria, with a maximum value of 2.227.862 cél.ml- 1 and minimum of 43.456 cél.ml- 1 was recorded in lentic and semilêntico points throughout the study, exceeding the levels of drinking water (20.000 cél.ml- 1) established in 2.914/2011 Ordinance of the Ministry of Health of Brazil. All samples contained microcystin, and 44 % had values superiores1μg L- 1. The thermal pattern of the water column showed micro stratifications with differences of less than 1 ° C from five feet deep. The distribution pattern was the type profile clinogrado with oxygen deficit in the bottom of the reservoir. Oxiclina from 10 meters depth was observed during the rainy season (May-June) in the two years of study. The phytoplankton community was represented by 10 functional groups: S1, M, H1, Lo, P, F, Sn, P, W2 and R. The assessment of the ecological status of the system by the index Q showed poor water quality. The results of the study show that the vertical variations were less pronounced than the seasonal variations of cyanobacteria and phytoplankton community in general in the reservoir. The presence of cyanotoxins confirms the need for the monitoring of water quality and measures to reduce eutrophication in water supply reservoirs semiarid RN and demonstrates the challenge for water managers and health authorities to ensure water quality and consequently minimize risks to human health. Compared to the lecture, the primer was considered more efficient in sensitizing the participants, featuring a dynamic practice, differentiated learning, create opportunities for students to rethink attitudes of respect and care for the environment, and shall have the opportunity to learn the subject content from your reality and living environment. The knowledge generated from the activity of scientific were seen as essential for raising awareness of some of the region`s environmental problems , such as eutrophication

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O texto trata-se de um recorte de uma pesquisa de mestrado realizada no Programa de Pós-Graduação em Educação da UFRN. Para tanto, consideraremos a relação entre os significados do corpo e da beleza identificados nas produções analisadas e os modelos de beleza na Educação Física. Essa pesquisa é de natureza qualitativa, tendo a Análise de Conteúdo para tratamento dos dados. O corpus de análise foi composto por 8 dissertações da área de Educação Física, publicadas no Banco de Teses da Capes no período de 2004 a 2008, selecionados a partir da temática corpo e beleza. Foi possível observar que a compreensão do corpo e da beleza na área vem sendo ressignificada, ao tratar de outras concepções estéticas, que consideram as singularidades expressas no corpo humano e na cultura da qual o indivíduo faz parte

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The state has changed over time in order to meet a society with increasingly stringent demands. Techniques of private means begin to be employed in an attempt to overcome the dysfunctions entrenched bureaucracy, making the machine faster. By federal law by the People Management Skills was established as a reference for the administration of Human Resources of the public sector in an attempt to develop professionally servers, based mainly on the three pillars of the model: the knowledge, skills and attitudes. This thesis aims at understanding, in the view of employees, the perceived impacts on the organizational changes occurring in the Department of Administration and Human Resources of the State of Rio Grande do Norte in order to implement a People Management Skills-based. It is a simple case study, characterized by the research during a certain period of time, collecting data in a real environment of an organization, in this case SEARH/RN. The procedures used in collecting data were the literature review, documental research and field research. We used a qualitative approach with exploratory and descriptive approach. Every reform was implemented in the institution and reported from there analyzed the impacts observed by the servers. As a result we observed a considerable advance in institutional activities, mainly relating to physical structure / organizational and human resource policies, with minor advances on labor policies, in much the result of the guiding focus of the reform on SEARH/RN. The impacts in total were more positive than negative and direct paths to improvement in public organizations. Making a general analysis of the modernization program implemented in SEARH/RN, we can conclude that there was a distinct change in all dimensions studied, mostly pointing out positive aspects, and contrary to the opinion of some authors, who claim to be very difficult to implement reforms in public organizations, since they are highly institutionalized environments. What was found was a big organization, with gaps and weaknesses, but with a much larger number of hits and recognition from institutional actors

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OBJETIVO: Investigar os fatores associados à diferença clinicamente significativa da qualidade de vida (DCSQV) após condicionamento físico em pacientes com DPOC. MÉTODOS: Trinta e cinco pacientes foram submetidos a 12 semanas de condicionamento físico, envolvendo treinamento de força e exercício aeróbio leve. Composição corporal, teste incremental e de endurance em esteira, teste de caminhada de seis minutos, força muscular periférica, PImáx, baseline dyspnea index (BDI) e Saint George's Respiratory Questionnaire (SGRQ) foram avaliados antes e após o treinamento, e suas alterações (Δ) foram calculadas. A DCSQV foi definida como a redução > 4% no escore total do SGRQ. Os pacientes que responderam ao treinamento, apresentando DCSQV, foram alocados no grupo respondedores (R; n = 24), e os demais pacientes foram alocados no grupo não-respondedores (NR; n = 11). RESULTADOS: Os seguintes resultados foram significativamente maiores no grupo R que no grupo NR (p < 0,05): VEF1 (1,48 ± 0,54 L vs. 1,04 ± 0,34 L), VEF1/CVF (47,9 ± 11,7% vs. 35,5 ± 10,7%), PaO2 (74,1 ± 9,7 mmHg vs. 65,0 ± 8,9mmHg) e ΔBDI [mediana (interquartil); 2,0 (0,0-3,5) vs. 0,0 (0,0-1,0)]. Houve correlação significativa (p < 0,01) de ΔSGRQ-sintomas (r = 0,44), ΔSGRQ-atividade (r = 0,62) e ΔSGRQ-total (r = 0,60) com ΔBDI. Após regressão logística, apenas ΔBDI foi selecionado como determinante da DCSQV. CONCLUSÕES: A DCSQV após o condicionamento físico está associada principalmente à redução da dispneia nos pacientes com DPOC. Portanto, são necessárias estratégias de tratamento visando interromper o ciclo dispneia-sedentarismo-dispneia nesses pacientes.

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OBJETIVO: As doenças osteomusculares são as afecções ocupacionais mais prevalentes em cirurgiões-dentistas. Nosso propósito: 1) investigar os conhecimentos, aplicabilidades clínicas dos princípios ergonômicos em discentes e docentes em atividades clínicas de uma universidade pública 2) pesquisar a incidência de sintomatologias dolorosas no pescoço, ombros, parte superior e inferior das costas, cotovelos, quadris, coxas, joelhos, tornozelos e pés no universo de alunos em estágios clínicos. 3) incitar discussões de normas e diretrizes ergonômicas na universidade. MÉTODOS: Esse estudo investigou o universo de alunos matriculados em disciplinas clínicas (148) e respectivos professores (30) do curso de odontologia da Universidade Federal do Rio Grande do Norte, Natal-RN a respeito dos princípios ergonômicos utilizados na rotina clínica. Paralelamente foi pesquisada a incidência de sintomatologia dolorosa nos alunos por intermédio do questionário nórdico e a partir dos resultados foi mensurado o índice de severidade dos sintomas em alunos. The Nordic Musculoskeletal Questionnaire (NMQ) é um instrumento de diagnóstico, proposto para padronizar a mensuração de relatos de sintomas osteomusculares. A análise dos dados foi através do programa SPSS-Statistical Package for the Social Sciences, versão 17.0 realizada analítica e descritivamente, com determinação das médias (x), desvio-padrão para variáveis quantitativas, freqüências simples e relativas para as variáveis categóricas, além da estatística de associação entre grupos (teste t) e a análise de associação do quiquadrado com nível de significância 5% entre as variáveis (Person). As respostas das questões abertas foram codificadas e transformadas em freqüências, descritas posteriormente. RESULTADOS: A aplicabilidade de medidas ergonômicas nas clínicas universitárias não foi evidenciada pelo universo de discentes e docentes. Quanto ao relato de sintomas osteomusculares o sexo feminino foi o mais acometido qualquer que seja o nível acadêmico cursado. As regiões anatômicas de maior grau de severidade de relatos dos sintomas foram: pescoço, parte inferior das costas, punhos, mãos e ombros, com significância etatística p<0,001. CONCLUSÃO: Em função dos achados os autores apresentam um protocolo de intervenção clínica baseado nos determinantes ergonômicos da Associação internacional de ergonomia (EAI) como medida de prevenção da saúde ocupacional dos futuros cirurgiões-dentistas ainda em processo de formação nas clínicas odontológicas das universidades.

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Este estudo parte do princípio de que o conhecimento da Educação Física é, eminentemente, vivencial e reconhece que a tecnologia da informação, especifi camente a comunicação de massa, é capaz de transmitir informação para um grande público, modifi cando a vivência das práticas corporais tematizadas pela Educação Física. Nesse sentido, esta pesquisa objetiva analisar como o aparato tecnológico, em especial a televisão, interfere na apropriação do conhecimento na Educação Física, com base na refl exão sobre o esporte. Assim, utilizamos o olhar estético sobre o telespetáculo esportivo e a análise de conteúdo para trabalhar com discursos de profi ssionais. Além disso, apontamos para a revisão de alguns conceitos pertinentes à área, tais como corpo, sensibilidade e conhecimento

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This paper concern the general subject of teacher career construction, since the period of the initial formation in the teaching course of pedagogy crossing the first effectives experiences of professional performance, until the reflections about the results of the continuous formation propositions. The specifics subject is the formative quotidian in the teacher s life beyond of the traditional stereotypes about individuals and institutions bring up for discussion a micro sociological approach about the professionals uncertainty and the personal hopes, the teacher displeasures and the pedagogical satisfactions. The epistemological reflection about the different formatives experiences, taking as example the Programa de Formação de Alfabetizadores PROFA (Alphabetizers Formation Program) developed by the Secretaria Municipal de Educação of Natal City, consider the ambiguous tension between the knowledge that the teachers acquire in their formation and the concrete teachers practical since those experiences. The study methodology is based in the qualitative comprehensive research, sustained by observations, impressive reflective accounts, and also in the theoretic analyses with contemporary references to the critical pedagogical through and education sociology. I used the autobiographic reflective account by the writer-researcher in her owner academic and professional way. I propose an image of a teacher s factory in such a way for its conformist aspects to the continuity stands as much the internal contradictions of the system. Gears, pieces and manual instructions are the educational components of this factory as ideological, institutional and technical structures to aim at to limit the critics and the changes. However the teachers thinking and acting with their owner creativity to adapted uncontexted professional knowledge s to their pedagogical lives. Under those analogies I propose the problem of this research the teacher s formation and theirs pedagogical practices- and also examine briefly its theoretic-philosophical and methodological basis. From the analysis and interpretation of my owner experiential life as teacher s educator I put the necessity of re-thinking the teacher s formation in terms to rebound more meaningfully in their pedagogical actuation. I believe an important part of the teacher s formation process is the personal wish to learn more about the office, explicitly connected to human convictions and values such as to a positive professional identity. Thus, the teacher able to reflect about your owner educator life can find the best way to help the students to think critically about their culture and history, valorizing creative exits by themselves to face the conformist social stands connected with school education

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In the present study we compute the atmospheric parameters (Teff , log g and vmic, [Fe/H]) and chemical abundance of 16 ions (Fe I, Fe II, O I, Si I, Na I, Mg I, Al I, Ca I, Ti I, Co I, Ni I, Rb I, Zr I, Ba II, La II and Cr I) for 16 solar-like stars with masses between 0:8 and 1:2 Mfi aproximatedly, including 10 planet-host stars detected by the CoRoT Space Mission. For this study, we use data from the ESO public archive: (i) high resolution spectra (R 47000) from the UVES spectrograph on the VLT/UT2-ESO (for 7 stars, covering the wavelength range 3450-4515 Å and 5500-9400 Å) and (ii) high resolution spectra from HARPS spectrograph on the La Silla-ESO 3.60 m telescope (for 9 stars, covering the wavelength range 4200-6865 Å). Our spectral analysis is based on MARCS models of atmosphere and Turbospectrum spectroscopic tools. On the base of the computed parameters, the referred abundances appears to follow the same behavior of the solar curve abundances. Further, one observes a signifficant correlation between the abundance ratio [m/Fe] and condensation temperature (Tc) of refractory elements (Tc > 900 K). The behavior of the projected rotational velocity (v sin i) versus the computed abundances [m/Fe] is also analyzed, presenting no clear trends. This study oers additional constraints to trace the evolutive history of solar-like stars with planets, including the search for chemical dierences between stars with and without transit planets and anomalies in the studied abundances

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Úlceras venosas são comuns na população adulta, causando significante impacto social e econômico devido a sua natureza recorrente e ao longo tempo decorrido entre sua abertura e cicatrização. Quando não manejadas adequadamente, as úlceras venosas têm altas taxas de falha de cicatrização e recorrência. Apesar da elevada prevalência e da importância da úlcera venosa, ela é freqüentemente negligenciada e abordada de maneira inadequada. Esta revisão discute abordagem diagnóstica e terapêutica das úlceras venosas. O diagnóstico clínico baseia-se em história e exame físico, com ênfase nos sinais e sintomas associados e palpação dos pulsos dos membros inferiores. A ultra-sonografia Doppler deve ser utilizada para determinar o índice pressórico entre o tornozelo e o braço, e exames não invasivos, como o duplex scan, devem ser realizados para avaliar o sistema venoso superficial, profundo e perfurante. Para abordagem terapêutica são fundamentais os diagnósticos clínico e laboratorial corretos, além do diagnóstico e tratamento adequados das complicações das úlceras crônicas. Os esforços devem ser direcionados para a cicatrização da úlcera e, posteriormente, para evitar as recidivas. O grande avanço no conhecimento da fisiopatogenia das úlceras venosas tem permitido o desenvolvimento de novas modalidades de tratamento clínico e cirúrgico.

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The human being has a fundamental role in issues concerning scarcity of energy resources as well as in the success of technologies which favor the use of renewable sources, such as wind energy. But what does wind energy mean for people? What are the psychological meanings concerning this term? Aiming to answer these questions, the general objective of this dissertation was to identify and to analyze the knowledge about wind energy taking into account a network of psychological meanings. One hundred and ninety one (191) university students from Natal-RN participated in the study, being male the majority (53%); aged between 17 and 51 years old (M=23.3 years; SD=5.7). Participants responded to self reports using the Natural Semantic Networks (NSW) technique, as well as to several sociodemographic questions. The results showed a consistent, positive and useful general semantic network. In this semantic network, knowledge about wind energy was represented by words that correspond to the appeal of (pro) environmental stance (e.g., clean and nature), that evinced both the technological aspect (e.g., force) and the economic aspect (e.g., economy). Results from different groups were also analyzed. The first set of groups (non-environemental and environmental) was divided considering the course (e.g., ecology and economy). The second set of groups(non-caretaker and caretaker) was divided based on the practice of environmental care expressed. Subtle differences were observed in the semantic networks of caretakers, who emphasized environment, an attribute not mentioned by non-caretakes. This indicates a construction of knowledge that is influenced by the presence or absence of the environmental commitment. Such findings may be useful in the construction of instruments for surveys and in the development of public and educational policies. Additionally, they may assist the media towards a more objective performance concerning wind energy

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Nowadays, as well as in the past decades, the dumping of biodegradable organic waste in landfill is common practice in Brazil, as well as in most parts of the world. Nevertheless due to its rapid decomposition and release of odors, this practice hamper’s the operation and implementation of a recycling system. These facts encouraged our research to find an efficient system for the management of organic waste, not only for the use of official workers responsible for managing these wastes, but also for non-governmental institutions. The Recycling for Life Community Association – ACREVI (Associação Comunitária Reciclando para a Vida), together with the municipal authorities of Mossoró-RN, Brazil, have assumed the social role of collecting and recycling solid waste produced by most of the local population. However, it was observed that the organic waste it collected was not receiving any treatment. This present work aims to make compost with mixed waste (green waste and organic household), and then do chemical analysis of the material in view to use the waste as organic fertilizer. The objective being: to share the knowledge acquired by putting it into a very simple language accessible to people with little education. The experiment was conducted at ACREVI, Mossoró (RN), and the compost was obtained following the method "windrow", forming three cells (I, II, III) with conical shape, dimensions of 1.6 meters and 2.0 meters in diameter for cells I and II, and 1.0 meters high and 2.0 meters in diameter for cell III. The process was accompanied by analysis: CHN elemental, a variation of cell temperature, humidity, pH, TKN, bulk density, nutrients and heavy metals. Stabilized organic compounds reached the C/N ratio of 10.4/1 cell I and 10.4/1 in the cell II in the cell, showing how good soil conditions, with potential to improve the physical properties of any soil and pH acid soils, has presented the cell III at the end of the process the C/N 26/1, is a high ratio may be associated with the stack size III, thus changing the optimal conditions for the occurrence of the process. The levels of heavy metals in the analyzed compounds were lower than those established by the SDA normative instruction, Nº 27, of 5 June, 2006. The use of pruning trees and grass are used in small-scale composting, while generating a quality compost in the final process, it also created an important condition for a correct sizing of the composting piles. Under the studied conditions it is not advisable to use cells with a height of 1.00 m in height and 2.00 m in diameter, as these do not prevent the rapid dissipation of heat and thus can not be a good product at the end of composting. The composting process in the shed of the association and the preparation of the primer enabled the development of an alternative technology to generate income for members of ACREVI.