952 resultados para João Baptista Borges Pereira
Resumo:
A headspace solid-phase microextraction (HS-SPME) procedure based on five commercialised fibres (85 μm polyacrylate – PA, 100 μm polydimethylsiloxane – PDMS, 65 μm polydimethylsiloxane/divinylbenzene – PDMS/DVB, 70 μm carbowax/divinylbenzene – CW/DVB and 85 μm carboxen/polydimethylsiloxane – CAR/PDMS) is presented for the characterization of the volatile metabolite profile of four selected Madeira island fruit species, lemon (Citrus limon), kiwi (Actinidia deliciosa), papaya (Carica papaya L.) and Chickasaw plum (Prunus angustifolia). The isolation of metabolites was followed by thermal desorption gas chromatography–quadrupole mass spectrometry (GC–qMS) methodology. The performance of the target fibres was evaluated and compared. The SPME fibre coated with CW/DVB afforded the highest extraction efficiency in kiwi and papaya pulps, while in lemon and plum the same was achieved with PMDS/DVB fibre. This procedure allowed for the identification of 80 compounds, 41 in kiwi, 24 in plums, 23 in papaya and 20 in lemon. Considering the best extraction conditions, the most abundant volatiles identified in kiwi were the intense aldehydes and ethyl esters such as (E)-2-hexenal and ethyl butyrate, while in Chicasaw plum predominate 2-hexenal, 2-methyl-4-pentenal, hexanal, (Z)-3-hexenol and cyclohexylene oxide. The major compounds identified in the papaya pulp were benzyl isothiocyanate, linalool oxide, furfural, hydroxypropanone, linalool and acetic acid. Finally, lemon was shown to be the most divergent of the four fruits, being its aroma profile composed almost exclusively by terpens, namely limonene, γ-terpinene, o-cymene and α-terpinolene. Thirty two volatiles were identified for the first time in the fruit or close related species analysed and 14 volatiles are reported as novel volatile metabolites in fruits. This includes 5 new compounds in kiwi (2-cyclohexene-1,4-dione, furyl hydroxymethyl ketone, 4-hydroxydihydro-2(3H)-furanone, 5-acetoxymethyl-2-furaldehyde and ethanedioic acid), 4 in plum (4-hydroxydihydro-2(3H)-furanone, 5-methyl-2-pyrazinylmethanol, cyclohexylene oxide and 1-methylcyclohexene), 4 in papaya (octaethyleneglycol, 1,2-cyclopentanedione, 3-methyl-1,2-cyclopentanedione and 2-furyl methyl ketone) and 2 in lemon (geranyl farnesate and safranal). It is noteworthy that among the 15 volatile metabolites identified in papaya, 3-methyl-1,2-cyclopentanedione was previously described as a novel PPARγ (peroxisome proliferator-activated receptor γ) agonist, having a potential to minimize inflammation.
Resumo:
O treino desportivo é visto como um processo pedagógico que visa o desenvolvimento de capacidades técnico-tácticas, físicas e psicológicas dos desportistas e das equipas no quadro específico das situações competitivas através da prática sistemática e planificada do exercício, orientada por princípios e regras devidamente estabelecidas. Cabe aos treinadores estabelecer o seu modelo de treino e de jogo tendo em conta os princípios biológicos, pedagógicos e metodológicos, que vão ao encontro das necessidades dos seus desportistas e do seu escalão etário. A crescente procura da prática do Futebol tem contribuíndo para o aumento de praticantes. No entanto, a sua prática deverá ocorrer em contextos de segurança, que devem ser proporcionados não só pelos clubes, mas objectivamente pelos treinadores O relatório tem como objectivo divulgar e expor as actividades e experiências vividas em contexto laboral, nomeadamente em contexto do treino desportivo em Futebol, modalidade escolhida para realizar o Estágio. Este estágio proporcionou a aquisição de novas aprendizagens referentes à metodologia do treino, ao processo de comunicação com os jovens futebolistas quer em contexto de treino quer contexto de competição. Permitiu igualmente estudar diferentes variáveis inerentes ao treino, nomeadamente a motivação e a percepção de sucesso. Através dos processos de treino e do desenrolar da competição ao longo da época desportiva, foi possível avaliar a motivação e a percepção de sucesso que os jovens futebolistas possuíam, tendo-se concluído que estes apresentavam uma orientação para a tarefa e uma motivação extrínseca por regulação identificada. Foi igualmente possível observar e analisar alguns momentos da equipa em competição, nomeadamente observar o modo como a equipa recuperava a posse de bola e, a partir da recuperação, como realizava o ataque, através do recurso à análise sequencial com retardos (análises prospectiva e retrospectiva), verificando que a forma de recuperação da posse de bola não influenciava o método de ataque realizado pela equipa.
Resumo:
O trabalho com jovens futebolistas deverá ser escudado em elevados níveis de conhecimento sobre as capacidades físicas e a forma como estas se desenvolvem nas crianças. O objetivo do presente trabalho é de perceber se se observa a existência de especialização metabólica em jovens futebolistas pertencentes ao escalão de iniciados (idade: 13 a 15 anos) e infantis (idade: 10 a 12 anos). Para responder ao objetivo definido, avaliou-se a potência aeróbia (PA) e a potência anaeróbia (PAN) de uma amostra constituída por 64 participantes. Destes, 11 eram praticantes federados infantis de futebol (idade: 11,7 ± 0,5 anos; peso: 44,1 ± 6,9 Kg; IMC: 20,6 ± 2,7 kg/m2), e 21 participantes federados iniciados de futebol (Idade: 13,9 ± 0,7 anos; Peso: 54,9 ± 10,6 Kg; IMC: 20,5 ± 3,0 kg/m2). O grupo de controlo era constituído por 11 participantes do escalão etário de infantis (Idade 10,9 ± 0,3 anos; Peso 40,1 Kg ± 7,3; IMC: 19,2 ± 2,4 kg/m2) e 21 participantes do escalão etário de iniciados (Idade: 13,9 ± 0,8 anos; Peso: 58,9 ± 11,7 Kg; IMC: 22,1 ± 4,4 kg/m2), mas sem prática desportiva federada. A PA (protocolo de Balke modificado com análise direta de gases) e a PAN (protocolo Wingate para o trem inferior) foram avaliadas e comparadas entre grupos, assim como o nível de correlação entre as variáveis aeróbias e as variáveis anaeróbias (SPSS 20.0). Os resultados verificados indicam que para o escalão de infantis o treino não é um factor conducente a uma superior PA e PAN entre os grupos mas que para o escalão dos iniciados a prática regular da modalidade produz efeitos sobre estas componentes. No entanto, no que concerne há especialização metabólica, esta não se verifica em nenhum escalão embora se possa admitir que há indicadores de que esta se comece a manifestar no escalão de iniciados.
Resumo:
O presente estudo propõe-se a investigar as práticas pedagógicas desenvolvidas na Escola Municipal de Frevo do Recife, visando a identificar Inovação Pedagógica neste contexto escolar. O objetivo é compreender como a corporeidade se constitui enquanto processo que possibilita o desenvolvimento de ações pedagógicas inovadoras. Visando tal objeto a pesquisa fundamenta-se em estudos que abordam a relação educação e corporeidade. O estudo dividese em duas partes, uma epistemológica e a outra metodológica. A primeira parte fornece os fundamentos teóricos que sustentam o estudo, contextualizando a corporeidade enquanto elemento da linguagem educacional. Identifica o que os saberes científicos têm apontado sobre o corpo e sua relação com a área educacional, segundo os autores: Merleau-Ponty (1994), Alvin Toffler (1980), Seymour Papert (1994), Gimeno Sacristán (2002), Carlos Fino (2008), Jesus Maria Sousa (2005). A segunda parte contempla a abordagem etnográfica discutida por Georges Lapassade (2005), Roberto Macedo (2010), Laurence Bardin (1997). Participaram da pesquisa os professores e os estudantes adolescentes e jovens que frequentam a Escola de Frevo perquirida. Com base nas falas dos sujeitos investigados, obteve-se, como resultado, algumas categorias, as quais se podem destacar: A arte dançante enquanto espaço para a formação; valorização do frevo; a dança como expressão da emoção; a construção da identidade pernambucana a partir do frevo. Nesse sentido, os dados apontaram que a Escola de Frevo pesquisada apresenta práticas pedagógicas que possibilitam o desenvolvimento de aprendizagem significativa. Desse modo, pode-se inferir que as práticas pedagógicas propostas na Escola de Frevo, em estudo, possibilitaram práticas pedagógicas que incentivam e desenvolvem a formação humana, pois se observa, nos depoimentos dos estudantes investigados, a valorização e o reconhecimento social. Como fator inovador, constatou-se maior liberdade para se expressar, criar, ousar, num imbrincamento entre a tradição e a inovação. Com relação às práticas pedagógicas dançantes, destacou-se a compreensão numa visão de educação integral onde inventividade, ludicidade, sensualidade e energia pulsante, construíram aprendizagens próprias, mediante uma prática pedagógica singular que justifica esta ação investigadora contextualizada na Escola de Frevo investigada. Esta pesquisa possibilitou perceber que a intencionalidad pedagógica centrada no lúdico, na corporeidade, nas interações e nas inúmeras apresentações que reforçam as ações e podem levar à Inovação Pedagógica.
Resumo:
A presente dissertação de mestrado tem como primeiro e fundamental objetivo salientar a importância das levadas da ilha da Madeira como património cultural e sublinhar a pertinência da sua candidatura a Património da Humanidade. Debruçando-se sobre um enquadramento conceitual e teórico acerca do património cultural e das levadas da ilha da Madeira, esta investigação pretende conhecer qual a relação existente entre ambos, existindo, também, o intuito de compreender qual o interesse da valorização, preservação e conservação destes aquedutos. O estudo desenvolveu-se, portanto, no sentido de responder à questão “As levadas da ilha da Madeira e o património cultural: que relação?”. Para dar resposta à mesma procedeu-se à explanação do conceito de património cultural e a sua legislação e, ainda, à história das levadas, que se cruza com a da própria ilha, recorrendo à consulta, leitura e análise de documentos relacionados com estes assuntos bem como ao trabalho de campo, percorrendo diversas levadas e registando observações in loco. Neste sentido, chegou-se à conclusão de que as levadas, que, no século XV, surgiram da necessidade de levar a água até aos terrenos agrícolas, são hoje a prova do esforço, luta e triunfo do povo madeirense. É na perspetiva de herança e cultura que encarar as levadas como património cultural faz todo o sentido, na medida em que apresentam, de facto, uma autenticidade ímpar, relativamente à sua forma e conceção, construção e materiais utilizados, tradições e técnicas de gestão de águas, localização, enquadramento e amplitude, termos linguísticos, lendas e contos a que deram origem e, ainda, a todo um património material e imaterial consigo relacionados.
Resumo:
Water-insoluble glucan was isolated from the baker’s yeast Saccharomyces cerevisiae. The yeast cells were treated with alkali and the residue then with acid. Chemical and NMR (1D and 2D) analyses showed that a linear (1→3)-β-glucan was purified that was not contaminated with other carbohydrates, proteins or phenolic compounds. The effects of the glucan on wound healing were assessed in human venous ulcers by histopathological analysis after 30 days of topical treatment. (1→3)-β-glucan enhanced ulcer healing and increased epithelial hyperplasia, as well as increased inflammatory cells, angiogenesis and fibroblast proliferation. In one patient who had an ulcer that would not heal for over 15 years, glucan treatment caused a 67.8% decrease in the area of the ulcer. This is the first study to investigate the effects of (1→3)-β-glucan on venous ulcer healing in humans; our findings suggest that this glucan is a potential natural biological response modifier in wound healing
Resumo:
Water-insoluble glucan was isolated from the baker’s yeast Saccharomyces cerevisiae. The yeast cells were treated with alkali and the residue then with acid. Chemical and NMR (1D and 2D) analyses showed that a linear (1→3)-β-glucan was purified that was not contaminated with other carbohydrates, proteins or phenolic compounds. The effects of the glucan on wound healing were assessed in human venous ulcers by histopathological analysis after 30 days of topical treatment. (1→3)-β-glucan enhanced ulcer healing and increased epithelial hyperplasia, as well as increased inflammatory cells, angiogenesis and fibroblast proliferation. In one patient who had an ulcer that would not heal for over 15 years, glucan treatment caused a 67.8% decrease in the area of the ulcer. This is the first study to investigate the effects of (1→3)-β-glucan on venous ulcer healing in humans; our findings suggest that this glucan is a potential natural biological response modifier in wound healing
Resumo:
Analisa as práticas de mediação desenvolvidas nas bibliotecas universitárias pelos bibliotecários diante das tecnologias digitais. Para tanto estabelece como objetivo geral analisar de forma comparativa, o impacto e mediação das tecnologias digitais no funcionamento de bibliotecas Universitárias de Portugal e da região Nordeste do Brasil. Integraram esta pesquisa 10 universidades federais brasileiras e 12 universidades públicas portuguesas, com um total geral de 115 bibliotecários, que são os sujeitos participantes. É uma pesquisa qualitativa que adota o método quadripolar – recomendado para os trabalhos desenvolvidos no âmbito das Ciências Sociais Aplicadas, e em especial na área de Ciência da Informação. Através da interação entre os polos: epistemológico, teórico, técnico e morfológico, que fundamentam este método, houve o fortalecimento e a fluidez das questões estudadas. Os resultados dos questionários aplicados aos bibliotecários, bem como da análise dos sítios das bibliotecas pesquisadas, foram interpretados através de um alicerce teórico baseado em três pontos principais: as questões paradigmáticas que envolvem a área de Ciência da Informação, a análise da mediação pós-custodial informacional e científica e as Tecnologias de Informação e Comunicação presentes nas bibliotecas. Como principais resultados vemos que o impacto das tecnologias digitais nas bibliotecas universitárias é considerado pelos bibliotecários brasileiros e portugueses como positivo, com ênfase em dois pontos: a inovação dos suportes de informação e a autossuficiência dos utilizadores. A maior diferença se percebe em relação ao aspecto social, através de uma maior preocupação entre os bibliotecários brasileiros com as barreiras informacionais causadas por questões econômica, social e educacional e sentido com menos intensidade pelos bibliotecários portugueses, que ascendem as tecnologias digitais com mais facilidade. De forma conclusiva, a análise do impacto e a mediação das tecnologias digitais nas bibliotecas pesquisadas, apontam para uma evolução nas práticas mediadoras das bibliotecas universitárias de Portugal e do Nordeste do Brasil e uma convergência laboral entre os bibliotecários portugueses e brasileiros.
Resumo:
Public policies have been studied in the various fields of humanities and social sciences, from different theoretical and technical aspects. However, there is still a lack of studies that incorporate the dimension that encompasses the political action and its interference in such actions, also recognizing the importance of the institutional setting of the Brazilian presidential model in implementing these policies. This fragmented and multiparty system has led to power heterogeneous sets of political parties. Thus, the ministerial offices, more than assisting the President´s government project, manage particularized agendas, which are party biased and have the influence of interest groups in hegemonic themes addressed by government agencies. When these agendas operate in sectoral and specialized policies, the friction level is apparently low. However, when this occurs in intersectoral actions, such as in regional development, there is evidence of strong signs of competition among government agencies, which in theory, should operate in an integrated manner. Although this is not a specific feature of Luiz Inacio Lula da Silva´s government- the period to be studied- there was similar behavior in Fernando Henrique Cardoso´s presidency, one realizes that the expansion of coalition on behalf of governance is increasingly interfering in the outcome of intersectoral public policies, due to these multiple arguments in action. In order to understand these processes, this study focused on the Sustainable and Integrated Development Programme for Differentiated Meso-Regions (PROMESO), part of the National Policy for Regional Development (NPRD). The program provides interface with various government agencies and their public policies in a clear intersectoral design. The research sought to identify and analyze the relationships between government agencies and their programs with interest groups, whether political parties or other segments of civil society, highlighting the logic of favoritism, which poses in second place the integration of actions in the intersectoral policies. Therefore, besides the theoretical debate that incorporates several categories of political science, public administration, public policy, geography and economics, the study focused on secondary sources, using different government agencies databases in order to raise information. It was observed that the interference of partisan politics has been disastrous for some public policies. Thus, the research confirms that cooperative character is fragile within government agencies, often limited to official documents, and that there is indeed, a striking feature of competition, especially when it comes to transversalized policies
Resumo:
The theoretical recital of the present study it is initiated of the evidence that the work occupies an important space in the man s life in way that the majority of the people works and passes great part of its time inside organizati ons. However, it is verified that the relation between man and work is becoming increasingly disagreement a time that the employees had started to complain work s routines, stress, not use all their potential and inadequate work s conditions. It can be observed by the way of Dejours (1994) studies. Thus, as contribution for the quality of work life s (QWL) studies the research developed here objectified to characterize the public employees quality of work life at EMATER -RN taking as reference an instrumen t of research synthesized from the typical academic literature of the subject. The synthesis of an ampler instrument is a necessity not taken care to the literature that treats on the subject but already perceived by some studies like Moraes et al (1990); Rodrigues (1989); Siqueira & Coleta (1989); Moraes et al (1992); Carvalho & Souza (2003); El -Aouar & Souza (2003) and Mourão, Kilimnick & Fernandes (2005); Adorno, Marques & Borges (2005) amongst others. These studies point out weak points of the existing models in the QWL s literature, as well as they recommend the elaboration of a model more flexible, that contemplates Brazilian cultural characteristics, and that contemplates the entire variable studied in the main existing models. For reach this objectiv e the adopted methodology was characterized as a case study with collected data in qualitative and quantitative way. Questionnaires and comments had been used as sources of evidences. These evidences had been tabulated through of statistical package SPSS ( Statistical Package for Social Science), in which the main technique of multivariate analysis used were the factorial analysis. As for the gotten results, it was verified the grouping of the quality of work life s indicators in 11 factors which are: Work s execution, Individual accomplishment, Work s equity, Relation individual and organization, Work s organization, Adequacy of the remuneration, Relation between head and subordinate, Effectiveness of the communication and the learning, Relation between work and personal life, Participation and Effectiveness of the work processes. Whatever to the characterization of the EMATER -RN s quality of work life it was clearly that to the measure that the satisfaction s evaluation with the QWL in the organization walks to intrinsic factors for extrinsic factors this level of satisfaction goes diminishing what points to the importance to improve these extrinsic factors in the institution. In summary it is possible to conclude that the organization studied has offered a significant set of referring variable to the quality of work life of the individual
Resumo:
This study has the objective examine the mechanisms of programs oriented fort cluster development, focusing on the analysis of the effectiveness of Procompi on support to APL of Mineral Water in Natal/RN. Search on the theory on public policy and support on apps for the theoretical and methodological reasons for the success of the program. In the document analysis was used reports from SEBRAE, IEL and SINCRAMIRN and was realized survey in the companies. The research indicates that not reaching the goals set. It is concluded that a poor definition of objectives and lack of orientation to the external economies are the causes of the failure
Resumo:
This study had like general objective analyzed the relation observed between working conditions and healthy, in the welfare perspective, by the Policilínica Zona Oeste´s healthy professionals. Were used like theoretical bases the categories of working conditions of Borges et al. (2013): working conditions and contractual legal; physical working conditions and materials; working conditions and characteristics of the work processes and working conditions and social management. For the analise of personal wellness in the job, were used the categories of Dessen and Paz (2010): friendship relations, relationship with the organization, growth opportunity, relations with customers , valuation and realization. For this, this research use the descriptive statistic and Bardin (1977) ´s content analysis besides the help of Manyeyes software, using the word clouds and trees words. Was possible identify that the working conditions have strong relations with the health of the health professionals of Policlínica, mainly about the physical and materials conditions that are precarious and influences the other dimensions of working conditions and conditions health. The welfare professionals is spoiled in the dimensions of realization and growth opportunity and influences the professional´s health
Resumo:
The south region of the Rio Grande do Norte has been historically recognized as a place of old indian villages. Inhabitants of the edges of the Catu River, border between the cities of Canguaretama and Goianinha, the Eleotérios in the threshold of 21st century had passed to be seen and self recognized as "remaining indians" of the RN. Their ethnic mobilizations, when becoming public had placed to the intellectual and political fields an old question to be reflected on: the asseverations concerning the "indian disappearing" in the State. This item brings with it other implications. Accessed by a para-oficial indigenism, the Eleotérios had started to establish political relations with the Potiguara indians of the Baía da Traição/PB and the Indian Movement, feeling stimulated to produce and to reproduce forms of social differentiation. In this context, this research is worried about elucidating the process of construction of the ethnicity among the Eleotérios, percepted from the social relations and politics kept with the amplest society, into a particular historical situation involving sugar cane fields owners, proprietaries, militants, researchers, ambiental agencies. The effects of these political and social relations had been extended, making Eleotérios appear to the society as susceptible social actors to the specific policies for the aboriginal populations
Resumo:
This work considers a ethnography boarding on the Apãniekra Jê-Timbira group of Central Brazil - leaving of a proposal of agreement of the group in perspectives of historical situations, analyzing its social organization from situational approaches. Taking the ethnography as main tool of production of data, the focus of the research takes dimension, when in the course of the ethnography situation, they come out, from certain events, social dramas that if ramify in crises, conflicts, faccionalismo. I analyze the mechanisms elaborated for the group to neutralize these dramas , such as the constitution of a tribal court , composites for native mediators and external mediators, dynamics ritual processes and politicians.
Resumo:
This paper proposes to analyse a situation of social drama involving the Krahô Indians (classified in ethnology as belonging to Jê-Timbira group) and the Museu Paulista of the Universidade de São Paulo, which we can classify as two distinct social fields. The understanding of the drama is conveyed through an examination of each of these fields and the coming together of both on the basis of the positions taken up, within the network of relationships established during the social process, by actors representing both the Krahô field and what we may call here the academic-administrative field. A multi-sited ethnographic approach is adopted, seeking the complexity of the drama and the positions in the aforementioned network, taking into consideration institutional political projects, personal projects and personal trajectories within a historical perspective. The aim is to encourage discussion of the relationship between the formation of the historical-scientific and ethnographic museums and the practices of the anthropological discipline, as well as the social role of these institutions and the processes of signification of objects belonging to the indigenous material culture