999 resultados para mecanismos de agregação
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Agronomia (Produção Vegetal) - FCAV
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Atherosclerosis is a chronic inflammatory disease characterized by accumulation of lipid and fibrous components in arterial vessels, giving rise to atheromas. Development of Atheromatou plaques leads to arterial steatosis, triggering ischemic events. Atherotrombosis has a strong correlation with atherosclerosis, where rupture of atheromatous plaques cause release of vessel wall's pro-thrombotic components, activating platelet aggregation and thromosis. Due to the major role played by platelets on thrombus-embolic conditions, drugs that inhibit platelet aggregation demonstrate great relevance for atherothrombosis prevention, reducing patient mortality. Currently, there are a variety of drugs acting on several different targets, preventing platelet activation. However, these therapies demosntrate side effects such as thrombocytopenia, neutropenia, hemorrhage and low oral availability. Thus, the application of molecular modifications such as hybridization can produce novel, more efficient antiplatelet aggregation inhibitors. In this project we describe the synthesis and characterization of novel N-acilhydrazone compounds, acting through multiple mechanisms such as platelet calcium chelation and nitric oxide donation by furoxanic subunits. Furthermore, we demonstrate that such compounds exhibit biological activity in in vivo bleeding time, in vitro antiplatelet aggregation and in vivo antinociceptive assays. Therefore, novel N-acilhydrazone compounds demonstrate potential as antiplatelet drugs for atherothrombosis prevention.
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Pós-graduação em Biociências - FCLAS
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Our main concern was to investigate the forms and rationalities implicit in the social regulation/autonomy of the management processes of learning, historically established in the 1971 through 2002 educational reforms, via assessment guidelines of school performance in the state of São Paulo. We used a socio-historical approach, relying on speeches and official documents as our primary source and on studies and research work about teacher assessment and performance as secondary sources. As central categories we considered continuity and rupture in the patterns and mechanisms of social regulation/autonomy of educational work. The results help to clarify how educational policies, instituted in contexts of social reproduction/transformation, influence the management of educational processes within the school.
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Pós-graduação em Ciência e Tecnologia Animal - FEIS
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Written language is a form of communication between humans and, as is not acquired naturally, needs educational interventions systematized to be learned. However, the teaching of writing is still mechanically imposed on the student, and could make use of other features such as games and plays. As a result, this research we analyze the writing development of phases, the psychic functions present in its development and the construction of a paradigm games and games that can be used as auxiliary tools in the teaching of writing. We describe the operation of each and identify how they can be used in the classroom. The survey was conducted through a qualitative approach of empirical type. The data concluded that these instruments are not used in class and often writing has no social relevance for the child. We also conclude that some usage scenarios of play occurred among children, are not used for didactic purposes as an example of sign-symbol relationship by teachers to teach writing
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Engenharia Mecânica - FEG
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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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)
Relação entre macrofauna, agregação e atributos edáficos em sequência de culturas sob plantio direto
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Pós-graduação em Agronomia (Agricultura) - FCA