44 research outputs found

    Cultura digital na periferia de Uberlândia: (des)encontros de uma inclusão perversa

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    Trabalho de Conclusão de Curso (Graduação)O texto aqui apresentado pretende enfrentar os debates, e de certa forma os sentidos e sentimentos, que percorrem as políticas de inclusão digital no Brasil. Será, desta forma, o Projeto Casa Brasil. que foi implantado no ano 2007 na ONG Ação Moradia - localizada na periferia da Zona Leste de Uberlândia -, o espaço de inserção de minhas problemáticas sobre a cultura digital na periferia e as dimensões da inclusão perversa que estão por de trás das políticas da sociedade em rede. Para tanto, voltar-me-ei às narrativas dos moradores de bairros populares que participaram do Casa Brasil criado durante o governo Lula (2003-2010). Governo que, respaldado por uma política internacional, implementou no Brasil um conceito de inclusão digital e, arrisco dizer, de cultura digital. Assim sendo, por meio do entrecruzamento de fontes orais e documentais, sustentado por referenciais teóricos que compreendem o espaço político de maneira complexa, no qual cabem, em sua extensão, as racionalidades, sentimentos e sensibilidades dos sujeitos sociais, discuto a maneira pela qual faz sentido ou não para as pessoas que vivem na periferia se conectarem a sociedade em rede

    As paixões políticas nos subterrâneos da vida punk: as est/éticas dos ressentimentos em revolta a partir de Pierre Ansart

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    Na Região Metropolitana de São Paulo, na década de 1980, como muitas outras cidades conectadas pelas veias abertas da globalização, corriam a cantar os/as bandos/as punks. Esse período, que corresponde ao contexto de efervescência dessas errâncias urbanas, coincide com a publicação de La gestion des passions politiques (1983), do sociólogo Pierre Ansart, refletindo sobre a participação de sentimentos e paixões na vida política. Apesar de não mencionar essas manifestações em Paris, suas contribuições teóricas e metodológicas possibilitam averiguar a maneira pela qual ressentimentos e revoltas mobilizaram essa produção est/ética. Para isso, nos serviremos de cartas, fanzines e fonogramas que compõem a Coleção Movimento Punk preservada no Centro de Informação e Documentação Científica da Pontifícia Universidade Católica de São Paulo (CEDIC/PUC) e catalogada durante nossa pesquisa para o acervopunk.com.br. A partir do pressuposto de que as emoções da cólera revoltada compunham essas manifestações, pretendemos analisar as dinâmicas afetivas e suas ressonâncias nas performances punks e conurbações/conturbações de São Paulo. Acreditamos que as lentes de análise propostas por Ansart são fundamentais para averiguar as ambivalências afetivas na arte e nos jogos das paixões políticas intrínsecas ao circuito punk

    ACERVO PUNK

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    Este artigo escrito a quatro mãos, pretende fomentar o debate sobre acervo, colecionismo e preservação das memórias de resistência cultivadas no meio punk. Nosso intuito, portanto, é apresentar os anseios e a história da constituição do Acervo Movimento Punk atualmente preservado no Centro de Documentação e Informação Científica da Pontifícia Universidade Católica de São Paulo (CEDIC/PUC). Pretende-se, além disso, indicar algumas caminhos investigativos direcionados pela documentação. Para isso, pontuamos aqui os desejos e os percalços que levaram a formação desse arcabouço documental e ressaltamos algumas evidências que as fontes nos inspiram a pensar sobre os circuítos punks na Região Metropolitana de São Paulo com suas intensas conexões a sociedade globalizada de consumo de massa. Palavras-chaves. Memória, história, pun

    In vitro effects of European and Latin-American medicinal plants in CYP3A4 gene expression, glutathione levels, and P-glycoprotein activity

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    Many medicinal plants species from European -such as Artemisia absinthium, Equisetum arvense, Lamium album, Malva sylvestris, Morus nigra, Passiflora incarnata, Frangula purshiana, and Salix alba- as well as Latin American traditions -such as Libidibia ferrea, Bidens pilosa, Casearia sylvestris, Costus spicatus, Monteverdia ilicifolia, Persea americana, Schinus terebinthifolia, Solidago chilensis, Syzygium cumini, Handroanthus impetiginosus, and Vernonanthura phosphorica- are shortlisted by the Brazilian National Health System for future clinical use. However, they lack many data on their action upon some key ADME targets. In this study, we assess non-toxic concentrations (up to100 μg/ml) of their infusions for in vitro ability to modulate CYP3A4 mRNA gene expression and intracellular glutathione levels in HepG2 cells, as well as P-glycoprotein (P-gp) activity in vincristine-resistant Caco-2 cells (Caco-2 VCR). We further investigated the activation of human pregnane X receptor (hPXR) in transiently co-transfected HeLa cells and the inhibition of Gamma-glutamyl transferase (GGT) in HepG2 cells. Our results demonstrate L. ferrea, C. sylvestris, M. ilicifolia, P. americana, S. terebinthifolia, S. cumini, V. phosphorica, E. arvense, P. incarnata, F. purshiana, and S. alba can significantly increase CYP3A4 mRNA gene expression in HepG2 cells. Only F. purshiana shown to do so likely via hPXR activation. P-gp activity was affected by L. ferrea, F. purshiana, S. terebinthifolia, and S. cumini. Total intracellular glutathione levels were significantly depleted by exposure to all extracts except S. alba and S. cumini This was accompanied by a lower GGT activity in the case of C. spicatus, P. americana, S. alba, and S. terebinthifolia, whilst L. ferrea, P. incarnata and F. purshiana increased it. Surprisingly, S. cumini aqueous extract drastically decreased GGT activity (−48%, p < 0.01). In conclusion, this preclinical study shows that the administration of some of these herbal medicines causes in vitro disturbances to key drug metabolism mechanisms. We recommend active pharmacovigilance for Libidibia ferrea (Mart.) L. P. Queiroz, Frangula purshiana Cooper, Schinus terebinthifolia Raddi, and Salix alba L. which were able to alter all targets in our preclinical study

    Pervasive gaps in Amazonian ecological research

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    Pervasive gaps in Amazonian ecological research

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    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

    Pervasive gaps in Amazonian ecological research

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    Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

    Search for single production of vector-like quarks decaying into Wb in pp collisions at s=8\sqrt{s} = 8 TeV with the ATLAS detector

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    Measurement of the charge asymmetry in top-quark pair production in the lepton-plus-jets final state in pp collision data at s=8TeV\sqrt{s}=8\,\mathrm TeV{} with the ATLAS detector

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    ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider

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