195 resultados para Atraso na dissociação das tétrades


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

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

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

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In a previous research, it was observed that are symbolic exchanges established between the persons and the environment they live in that allow them to interact with others, leading them to reorganize their internal cognitive structures, reaching more elaborated stages. In the case of a person with deafness, the possibility of exchange can be compromised and knowledge about the construction of the temporal notion seems to be essential to enable a path of explanation about the difficulties they have regarding their cognitive development. Thus, based on the theory of Jean Piaget, the study intended to understand how the temporal notion constitutes as possible subject to the process of building the real, and examine, through empirical evaluation, if the difficulty in establishing symbolic exchanges caused by deafness would compromise the development of this notion. For this purpose, bibliographical research and empirical research were made, by the comparative evaluating between the performance of deaf and hearing subjects in relation to the construction of temporal notion. Two groups of subjects aged between 10 and 12 years were composed: one with three deaf subjects and another with 3 listeners. The assessment and analysis of the data were based on an experiment created by Piaget and his staff. The results showed that the listeners present responses from operative level, compatible with the age range in which they found themselves. In contrast, the deaf subjects showed responses of transition level, which indicates a situation of cognitive delay. We conclude that the potential compromise linguistic presented by deaf people, can hinder the activity representative causing delay in construction of temporal notion and consequently the development of thought. We conclude that the possible linguistic committal presented by deaf people can hinder the representative activity, causing delay in construction of temporal notion and consequently in the development of thought. In this sense, it seems that the Sign Language constitutes an important tool for deaf people because it allows symbolic exchanges that favor the cognitive development.

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Objective: To characterize the communicative behaviors of children who entered in Primary School after the age of five. Methods: It was a descriptive study, held in a city at the countryside of Parana state (Brazil), in the years 2007 and 2008, in both school and home environments. Twelve children of both genders joined in the study, with age ranging from five years and two months to six years, besides their mothers and respective teachers. Interviews were conducted with mothers and a questionnaire for teachers. Afterwards, observations of the communication of children in school and home environments were conducted. Data analysis focused on those relevant to children’s development and school performance, trying to determine their communicative profile in school and home environments, from protocols regarding the indicators of communication means and functions. Results: The results indicated the presence of a child with poor general health, with complications from the pregnancy period, with motor and language delays and low school performance. It was also observed that all children used verbal means to communicate and the highest frequency of communicative functions appeared in home environment, indicating an important aspect to be considered in the stimulation of communication of these children. Conclusion: Data from this study showed that the children benefited more of contexts planned with family interlocutors.

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Estudo de caso que apresenta um projeto internacional de implantação de novos processos de negócios com suporte de sistemas de informação em empresa multinacional norte-americana com utilização de equipes virtuais sediadas em São Paulo, Rio de Janeiro, Buenos Aires, Bogotá e Cidade do México. A metodologia utilizada o desenvolvimento deste artigo constituiu-se de levantamento bibliográfico e coleta, agrupamento e análise de dados. Este projeto teve três fatores-chave na sua execução: primeiro, foi a seleção, disponibilização e uso das tecnologias adequadas; o segundo fator, a comunicação, com Plano de Comunicação desenvolvido em parceria com a Área de Marketing da empresa; e o terceiro fator, a gestão de pessoas, atribuindo prioridade aos aspectos culturais, como: idioma, feriados, horário de trabalho e rotinas locais. O costumeiro atraso dos participantes para as reuniões de progresso do projeto foi um dos maiores obstáculos superados no curso do projeto.

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Pós-graduação em Educação Escolar - FCLAR

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O presente trabalho envolveu três experimentos: Influência da imunização passiva contra estradiol (E2) e a aspiração do maior folículo (F1) no momento do desvio folicular esperado, sobre a ocorrência do desvio folicular observado. Também foi objetivo verificar o efeito desses tratamentos sobre o perfil de hormônio folículo estimulante (FSH), hormônio luteinizante (LH) e inibina total circulante. Para tanto, os animais foram imunizados com dose única de soro anti-E2 (G anti-E2) ou o F1 foi aspirado no momento do desvio esperado (GAF1). O plasma sangüíneo foi obtido no período pré e póstratamento. O intervalo entre o dia da aplicação do soro (desvio esperado) e o dia da detecção do desvio foi em média o mesmo para o G anti-E2 e controle. No GAF1, a eliminação do maior folículo provocou atraso no momento da detecção do desvio folicular entre o segundo (F2) e o terceiro (F3) maior folículo, comparado ao controle. Em ambos os tratamentos o perfil de FSH, LH e inibina total foi similar ao controle. O experimento 2 tratou de um projeto piloto visando dominar a técnica de colheita de fluido dos grandes folículos ovarianos por meio de punção com agulha fina e o efeito desse procedimento sobre o folículo e às concentrações hormonais. Foram utilizados dois grupos de animais, G1 o folículo foi mantido intacto (controle) e G2 foi utilizada uma punção folicular quando o maior folículo atingiu diâmetro ~35 mm. Ultrasonografia ovariana foi realizada desde o ínicio da detecção de um folículo ~25mm, seguindo até a detecção da ovulação. O terceiro experimento objetivou verificar a influência de gonadotrofina coriônica humana (hCG) em folículos de 30 ou 35mm sobre as concentrações de hormônios esteróides e fatores intrafoliculares. A colheita do fluido folicular foi realizada imediatamente antes e 30 horas após a aplicação... (Resumo completo, clicar acesso eletrônico abaixo)

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O presente trabalho teve o objetivo de estudar o desenvolvimento da antera, incluindo a microsporogênese e microgametogênese, em Juncus micranthus, J. microcephalus e J. tenuis var. dichotomus avaliando caracteres que possam auxiliar na delimitação infragenérica de Juncus e compará-los àqueles disponíveis para o gênero e outras Juncaceae e famílias ciperídeas em Poales. As três espécies de Juncus estudadas apresentaram características comuns como desenvolvimento da parede da antera do tipo monocotiledôneo, endotécio uniestratificado e com espessamento em espiral, camada mediana uniestratificada e efêmera, tapete secretor com células uninucleadas e grãos de pólen dispersos em tétrades tetraédricas, trinucleadas. Como caracteres inéditos no gênero foram observados, apenas em J. microcephalus, grãos de amido no citoplasma das células do endotécio e da célula vegetativa do grão de pólen, em estágio anterior ao desenvolvimento de espessamento no endotécio. A maioria das características embriológicas aqui observadas assemelha-se ao conhecido para a gênero em Juncaceae, corroborando a uniformidade embriológica da família dentre as ciperídeas em Poales

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Mesenchymal stem cells (MSCs) are adult multipotent cells with fibroblastoid morphology and adherent to plastic. Furthermore, they can be obtained from different sources. Besides bone marrow, these cells are taken from umbilical cord blood, umbilical vein, saphenous vein, peripheral blood, arteries, liver and fetal pancreas, placenta, dental pulp and adipose tissue. MSCs derived from adipose tissue are important because of the abundant number of cells that can be obtained from this tissue, easy access and little discomfort to the patient. This study compared two techniques for obtaining MSCs from adipose tissue: mechanical dissociation (MD) and enzymatic digestion (ED). We also analyzed the inter-species cross-reactions using commercial monoclonal antibodies directed against surface antigens of stem cells from different species: mouse, horse, rabbit, monkey and human. We found that MD technique is favorable in relation to ED within 15 days of culture, and ED is more efficient in the first days of culture. The data also showed that MD causes less damage to cellular DNA. About inter-species cross-reactions, the monoclonal antibody A69 directed against stem cells from rabbits, which can be used in veterinary medicine, particularly in research involving horses

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This monograph has as objectives introduce digital terrestrial television, describing the process of installation of this in Spain, their technical qualities and possibilities of change and innovation that this creates. The exposure of the different chapters of this monograph has a objective presenting and discussing what are the characteristics of this new technology, your birth, what is its importance in communication and how this is inserted inside the Spanish reality. The introduction of digital terrestrial television in Spain is cited as an example of a pioneer in the development and installation of this new technology, but also appears as a nation that has come a way with some economic failures, reaching one of the largest cases of delayed installation of digital television in Western Europe. Making use of the European system for digital terrestrial television (DVB-T - Digital Video Broadcasting) it was possible some advances as the quality of communication and strengthening national public television system, but many vices of analog system were transferred this new system, as the concentration of channels to a foreign group and interactivity opportunities were wasted. Digital terrestrial television can provides better picture quality and sound, possibility of interactivity, mobility, hypermedia and multiprogramming, while the latter tool may lead to the democratization of media, opening it to other social agents. Going much further than just a technological advancement, digital television is strongly connected with the politics and the economy of the nation in which it operates

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The Brazilian government has convinced the world that ethanol deriving from sugar cane is a promissory means of sustainable fuel for vehicles. There is a great growth of ex vehicles , i.e, run both by ethanol and gasoline, due to competent automotive industries and e cient alcohol production technology. In 2009 and 2010 the ethanol production was 25.7 billion liters and 53.8% of sugar cane production was destined to alcohol production. Nevertheless, the sugar production also derived from sugar cane should increase in 2011. Brazil produced 33 million tons of sugar in the last harvest. With sugar cane on the rise production is arising new environmental problems. The harvest using mechanized cut besides improving the logistic transportation system leaves the generating residue in the eld. This residue is a mixture of straw, leavings and scrap of sugar cane named sugar cane crop residue and corresponds to 30% of biomass and can be burned and produce electricity by cogeneration. But the transport the sugar cane crop from the eld is expensive due costs involved in the transport system. This work aims to propose a formulation for the bales collecting problem from sugar cane eld to mill that minimize the costs involved in the transport system. The computational tests use the C++ language and an algorithm based on genetic algorithms techniques

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In this work, the dissociation dynamics of heteronuclear diatomic molecules is investigated by means of the classical driven Morse oscillator. The interaction of the molecule and the laser field is represented through the product of the molecule dipole function and the electric field of the laser. This interaction may lead to the breaking of the chemical bound, that is, to the dissociation of the molecule. The work was developed in two parts. In the first part, we studied the dissociation as a function of the range of the permanent dipole. In the second part, we maximized the dissociation probability manipulating the parameters of the external field. We have observed that the dissociation can be controlled by means of variations of parameters associated with the range of the permanent dipole