277 resultados para Estabilidade e instabilidade enunciativas

em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Ce travail vise à etudier le genre lettre de lecteur publiés dans deux magazines. La lettre de lecteur est un texte publié dans une section spécifique du jornal et du magazine à travers lequel les lecteures dialoguent avec les éditeures du magazine et avec les autres lecteures, généralement ayant comme thème les textes du maganize publié dans les éditions précédentes. Pour Bakhtine (1997, p.302), “ nous apprenons à mouler notre discours aux formes du genre ». En reliant les genres de discours à l’activité sociale, à l’interaction, Bakhtine affirme que c’est la situation sociale e les participants immédiats qui déterminent la forme e le style de l’énoncé. Compte tenu de la nécessaire présence des genres de discours dans des actvités langagières des sujets, justifie l’importance de l’étude des genres dans les diverses pratiques sociales. À partir des questions soulevées par Circle de Bakthine, en particulier ceux par rapport à genre de discours, ce travail a pour but discuter, dans une perspective dialogique bakhtinienne, les différentes destinataires des magazines Veja et Nova Escola conduirait à des changements du genre lettre de lecteur, principalement en ce qui concerne les aspects stylistiques. Ainsi, nous avons l’intention de discuter le genre lettre de lecteur e de sa ralation à la sphère de l’activité journalistique dans le but de réfléchir sur la stabilité et l’instabilité du genre. Le corpus se compose des lettres de lecteurs tirés de quatre éditions des magazines Veja et Nova Escola, a été diffusé en 2011. La recherche montre qu’il y a une instabilité dans le genre lettre de lecteur dans la sphère journalistique, affecté par d’autres genres comme genres de la sphère pédagogique, didactiques et de instruction. Les lettres aussi dialoguent avec le genre confessionnel et de confidence

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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The objective of this study was to evaluate the effect of beta-lactoglobulin polymorphism, breed and seasonality on physico-chemical characteristics and stability of bovine milk. Six Holstein-Zebu (H-Z) and five Holstein dairy herds were selected, of which 660 Holstein and 293 crossbred Holstein-Zebu milk and blood samples were collected, adding up 953 samples, distributed in two collecting periods at rainy and two at dry seasons. Each milk sample was analyzed for titratable acidity, pH, freezing point and milk ethanol stability, at the following ethanol concentrations: 70, 76, 80 and 84GL. Individual blood samples were submitted to polymerase chain reaction (PCR) for the determination of beta-lactoglobulin polymorphism. No effect of beta-lactoglobulin polymorphism was observed in physico-chemical characteristics of milk, in both studied breed. Breed effect for Holstein and H-Z, respectively, was observed on titratable acidity (16.16 and 17.07°D, while effect of seasonality (for rainy and dry seasons, respectively) was also observed on freezing point (-0.5411 and -0.5376°H). Effects of breed and seasonality on milk stability were observed (Holstein-Zebu milk was less stable on dry season), however, no effect of beta-lactoglobulin on milk stability was observed.

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The growing demand for stable, safe and effective cosmetics has required increasingly complex studies by the scientific community and the use of more efficient techniques to determine the stability of these products. The use of active principles from the Brazilian flora has led to the development of numerous products, in the most varied pharmaceutical forms, making it, even more difficult to standardize experimental protocols to certify the stability of cosmetic preparations. While in Brazil there is no one protocol that standardizes the tests that should be carried out to determine product stability, several studies have been conducted in academic laboratories to determine the stability of specific raw materials. The rheological properties of topical use products have to be taken into account in their manufacture, storage and application. The determination of the rheological behavior of a formulation helps in evaluating the physicochemical nature of the vehicle, allowing early signs of physical instability to be detected and thus enabling quality control of the constituents, test formulations and final products. Thermal analysis has also been used to assist in the study of cosmetic stability and differential scanning calorimetry to guide the development of new products. Other tools, such as fluorimetry and laser granulometry can be used to help the study and development of both emulsified and non-emulsified systems. The aim of the present study is to develop a protocol for the investigation of the physical and chemical stability of phytocosmetics - systems containing active compounds extracted from the Brazilian biodiversity.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Engenharia Civil - FEIS

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Engenharia Elétrica - FEIS