28 research outputs found

    Práticas de literacia familiar em benguela (angola): Um estudo exploratório.

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    As investigações mostram que a aprendizagem da linguagem escrita começa muito antes do ensino formal e que as práticas e o ambiente de literacia familiar influenciam a literacia emergente e o desenvolvimento da linguagem escrita. Mas, se estes estudos são desenvolvidos no Ocidente, em África pouco se tem feito e em Angola não se conhece nenhum estudo. Com base nos estudos existentes, em diversos contextos culturais, verifica-se que a literacia familiar existe, podendo as práticas variar no tipo e frequência uma vez que o que se passa num contexto, pode não ser igual ao que se passa noutra realidade cultural diferente. Neste sentido este trabalho, procura caraterizar as práticas e o ambiente familiar de literacia em 11 famílias de Benguela com um filho a frequentar o início da escolaridade. Os dados foram recolhidos através de uma entrevista informal aos pais. Os resultados mostram que as práticas de literacia familiar são essencialmente práticas formais, muito ligadas à escola e às tarefas escolares. No mesmo sentido verificámos que a responsabilidade pela aprendizagem da linguagem escrita é atribuída à escola, e a explicadores. Apesar de surgirem algumas referências do uso da literacia associado a práticas religiosas, poucas referências foram feitas a práticas informais ou lúdicas. Foi clara a quase inexistência de materiais de leitura (jornais, livros, revistas) para além dos escolares. A falta de tempo, a escassez de bibliotecas públicas e livrarias, a falta dos recursos financeiras para aquisição do material de literacia e a iliteracia foram apontados como obstáculos para o desenvolvimento de outro tipo de práticasinfo:eu-repo/semantics/publishedVersio

    Shannon diversity index of fecal samples and reactors of PolyFermS models.

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    <p>The Shannon index was assessed in fecal donors 2 and 3, all reactors of model 2 and reactors IR, CR, TR3 and TR4 of model 3 of three last days at the end of stabilization phase. A higher Shannon index reflects a more diverse community (in abundance and evenness).</p

    Correlations between genus-level phylogenetic groups and metabolites (SCFA, BCFA) of three last days at the end of stabilization period of model 2.

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    <p>The correlations, assessed by Spearman are indicated by either red (positive) and blue (negative), the significant correlations (q < 0.05) are indicated by ‘+’. Only genus related phylotypes > 0.1% and with at least one significant correlation with metabolites are depicted. Parentheses indicate an unknown genus belonging to a family or order.</p

    Set-up of the continuous fermentation models with immobilized gut microbiota.

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    <p><b>(A) Model 1.</b> 3-stage model consisting of a proximal, transverse and distal colon reactor <b>(B) Model 2.</b> 2-stage model with an inoculum reactor connected to two parallel test systems consisting of a proximal and distal colon reactor <b>(C) Model 3.</b> 2-stage model with an inoculum reactor (proximal colon conditions) feeding 5 distal colon reactors connected in parallel; RT: Retention time, V: Volume.</p

    PCoA analysis of PolyFermS models based on weighted and unweighted UniFrac analysis.

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    <p>Each symbol is representing a different reactor. <b>(A)</b> Three last days at the end of the stabilization period of all reactors of model 2 (IR, PC1, DC1, PC2 and DC2) and <b>(B)</b> three last days at the end of the stabilization period of model 3 (IR, CR, TR3 and TR4).</p

    Daily mean SCFA concentrations in fermentation effluents of IR of PolyFermS models measured by HPLC.

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    <p>Initial stabilization: stabilization period in continuous mode to reach pseudo steady-state.; stabilized operation mode: continuous operation mode during pseudo steady-state conditions. <b>(A)</b> Model 2 and <b>(B)</b> model 3; (♦) acetate, (●) butyrate, and (■) propionate.</p

    Metabolites concentration (mM) and ratios (%) measured by HPLC in effluent samples of models’ reactors at the end of the stabilization period.

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    <p>PC, proximal colon reactor; DC, distal colon reactor; IR, inoculum reactor; CR, control reactor; TR, test reactor</p><p>Data are means ± SD of three last days at the end of the stabilization period; samples were analyzed in duplicate. ND, not detected</p><p>Values with different letters are significantly different within one model (P < 0.05)</p><p>Metabolites concentration (mM) and ratios (%) measured by HPLC in effluent samples of models’ reactors at the end of the stabilization period.</p

    Microbial composition of fecal samples and reactors of PolyFermS models measured by 454 pyrosequencing.

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    <p>Relative abundance at <b>(A)</b> phylum level of fecal samples of donors 2 and 3, IR and DCI of model 2 and IR and CR of model 3 <b>(B)</b> family level and <b>(C)</b> genus level of fecal samples of donors 2 and 3, all reactors of model 2 and reactors IR, CR, TR3 and TR4 of model 3 identified by pyrosequencing of the V5-V6 hypervariable regions of the 16S rRNA gene. Effluent samples are average values of three last days at the end of the stabilization period. Parentheses indicate an unknown family belonging to an order or an unknown genus belonging to a family or order. Values < 1% are summarized in the group “others”.</p

    qPCR enumeration of bacterial groups in fecal inocula and effluent samples of models’ reactors at the end of the stabilization period.

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    <p>PC, proximal colon reactor; DC, distal colon reactor; IR, inoculum reactor; CR, control reactor; TR, test reactor; ND, not detected</p><p><sup>1</sup>Data are mean log<sub>10</sub> copies 16S rRNA gene g<sup>-1</sup> feces; samples were analyzed in duplicate.</p><p><sup>2</sup>Data are mean log<sub>10</sub> copies 16S rRNA gene g<sup>-1</sup> fermentation effluent ± SD of three last days at the end of the stabilization period; samples were analyzed in duplicate. Values with different letters are significantly different within one model (P < 0.05)</p><p>qPCR enumeration of bacterial groups in fecal inocula and effluent samples of models’ reactors at the end of the stabilization period.</p
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