87 research outputs found

    SELEÇÃO, ORGANIZAÇÃO E ELABORAÇÃO DE CADASTRO DE ROCHAS METAMÓRFICAS DE ALTO GRAU PARA A IMPLANTAÇÃO DO LABORATÓRIO DE ENSINO DE PETROLOGIA METAMÓRFICA

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    A disciplina Petrologia Metamórfica está incluída no 6º período do curso de Geologia daUniversidade Federal do Sul e Sudeste do Pará (UNIFESSPA). Nesta disciplina o estudante é estimulado aintroduzir os conceitos básicos de petrologia das rochas metamórficas, dos quais fazem parte o conceito demetamorfismo (MYASHIRO, 1965; WINKLER, 1976; YARDLEY, 1989, 2004;), a petrografia (TURNER;VERHOOGEN, 1962; TURNER, 1981; BEST, 1982; PHILPOTTS, 1990), a composição química emineralógica das rochas metamórficas e as relações entre os processos tectônicos, os metamorfismosregional, termal e retrógrado, e as mineralizações (MYASHIRO, 1965; MEHNERT, 1968; SUPPLE, 1985;PASSCHIER; MYERS; KRÖNER, 1990).Segundo Juliani et. al., (2002), a petrologia metamórfica tem como objetivo o estudo da evoluçãocrustal terrestre com base na composição química dos minerais, suas sequências de cristalização, texturas, eestruturas reliquiares de seus protólitos. Assim sendo, o objetivo deste trabalho foi selecionar e descrevermacro e microscopicamente as amostras de rochas metamórficas de alto grau e catalogá-las, e todos os dadosde todas as amostras foram organizados em um fichário

    Atenção fisioterapêutica em projeto de extensão: relato de experiência / Physiotherapic attention in extension project: experience report

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    O trabalho trata-se de um estudo descritivo na modalidade relato de experiência e tem como objetivo descrever a trajetória, desafios e dificuldades durante a participação no Projeto Canudos destacando a importância da assistência fisioterapêutica no contexto de promoção de saúde em um povoado localizado no sertão da Bahia. As ações foram desenvolvidas no povoado de Canudos Velho que originalmente é chamada de Belo Monte (Alto Alegre), Razinho e Rio do Vigário (Bahia), no período de 30 de junho à 08 de julho de 2018 com uma carga horária de 8h diárias. Essa região fica situada onde aconteceram as batalhas durante a Guerra de Canudos. A participação nesse projeto permitiu a convivência com outras pessoas, o compartilhamento de experiências, conquista de saberes, busca de desafios, visão do outro com empatia, além de permitir colocar em prática toda aquela teoria vista em ambiente acadêmico. A extensão hoje deixa de ser um mero complemento propagador do que é visto em sala de aula e passa a ser peça fundamental na formação acadêmica de um futuro fisioterapeuta que passa a ter uma visão sensata e crítica de determinadas situações, destacando assim um novo delineamento de profissional, o profissional mais humano.

    AVALIAÇÃO DA AROEIRA (SCHINUS TEREBINTHIFOLIUS RADDI) NO TRATAMENTO DA MUCOSITE ORAL INDUZIDA PELA RADIOTERAPIA EXCLUSIVA OU ASSOCIADA À QUIMIOTERAPIA: ESTUDO PILOTO

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    Objetivo: Avaliar o uso da Aroeira no tratamento da mucosite oral induzida pela radioterapia exclusiva ou associada à quimioterapia em pacientes com câncer de cabeça e pescoço. Método: Foi realizado um ensaio clínico controlado, randomizado e duplo-cego, onde doze indivíduos foram alocados em dois grupos: intervenção e controle e orientados a aplicar a pomada três vezes por dia. A avaliação diária do grau da mucosite e da nota da dor referida pelo paciente permitiram observar a regressão ou não da sua manifestação. Foram também aplicados formulários referentes à situação clínica, sociodemográfica e de higiene bucal dos participantes. Uma análise descritiva dos dados foi realizada. Resultados: No grupo controle, 50% (3) dos participantes apresentaram regressão do grau de mucosite; já no grupo de intervenção 17% (1). Em relação a nota da dor, 83% do grupo placebo relatou regressão e 50% do grupo intervenção. Conclusões: Neste estudo o uso da aroeira não mostrou-se eficaz no tratamento da mucosite, em relação ao uso do placebo. por outro lado apresentou uma porcentagem significativa de redução da nota da dor. Devido às limitações do estudo não se pode comprovar o efeito fitoterápico da aroeira neste tipo de abordagem.

    O perfil semiológico do paciente portador de hemorragia digestiva alta

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    OBJETIVO: O seguinte estudo objetivou descrever a semiologia do paciente portador de hemorragia digestiva alta, considerando como determinante na avaliação de potencias focos hemorrágicos. METODOLOGIA: Foram realizadas buscas nas plataformas do SciELO, LILACS, PubMed, Scopus e Google Scholar,utilizando os descritores gastrointestinal bleeding, peptic ulcerous disease e varicose hemorrhage, sendo identificados 35 estudos, dos quais foram incluídos 13 artigos completos. Desses estudos, 5 avaliaram as principais etiologias, 2 o surgimento de novos testes diagnósticos, 2 analisaram os aspectos epidemiológicos e 1 a sintomatologia apresentada pelo acometimento da hemorragia digestiva alta. Observou-se inicialmente a abundâncias de informações conceituais sobre o sangramento, como um transtorno clínico comum, acompanhada de inúmeras manifestações, considerando que o foco hemorrágico pode ocorrer em qualquer porção do trato gastrointestinal. Neste estudo, todas as publicações eleitas apresentaram o quadro semiológico composto por algia abdominal, indícios de choque hipovolêmico e taquicardia, alguns exibiram quedas abruptas da pressão arterial, odinofagia, êmese, náuseas e estado ictérico. Os pacientes implicados, cronicamente, já manifestaram ocorrências prévias, devido ao caráter recidivante torna-se essencial investigar a existência de varizes, fístula aorto-entérica, angiodisplasia e doença ulcerosa. CONCLUSÃO: Elucida-se que a hemorragia digestiva alta representa a principal causa de sangramento do trato gastrointestinal, majoritamente manifesta-se como hematêmese ou melena e cursam com o quadro sintomatológico que auxilia na avaliação da gravidade deste e o embasamento de potenciais focos de sangramento e que contribuam para disseminação de informações e intervenções futuras

    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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    Geographic patterns of tree dispersal modes in Amazonia and their ecological correlates

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    Aim: To investigate the geographic patterns and ecological correlates in the geographic distribution of the most common tree dispersal modes in Amazonia (endozoochory, synzoochory, anemochory and hydrochory). We examined if the proportional abundance of these dispersal modes could be explained by the availability of dispersal agents (disperser-availability hypothesis) and/or the availability of resources for constructing zoochorous fruits (resource-availability hypothesis). Time period: Tree-inventory plots established between 1934 and 2019. Major taxa studied: Trees with a diameter at breast height (DBH) ≥ 9.55 cm. Location: Amazonia, here defined as the lowland rain forests of the Amazon River basin and the Guiana Shield. Methods: We assigned dispersal modes to a total of 5433 species and morphospecies within 1877 tree-inventory plots across terra-firme, seasonally flooded, and permanently flooded forests. We investigated geographic patterns in the proportional abundance of dispersal modes. We performed an abundance-weighted mean pairwise distance (MPD) test and fit generalized linear models (GLMs) to explain the geographic distribution of dispersal modes. Results: Anemochory was significantly, positively associated with mean annual wind speed, and hydrochory was significantly higher in flooded forests. Dispersal modes did not consistently show significant associations with the availability of resources for constructing zoochorous fruits. A lower dissimilarity in dispersal modes, resulting from a higher dominance of endozoochory, occurred in terra-firme forests (excluding podzols) compared to flooded forests. Main conclusions: The disperser-availability hypothesis was well supported for abiotic dispersal modes (anemochory and hydrochory). The availability of resources for constructing zoochorous fruits seems an unlikely explanation for the distribution of dispersal modes in Amazonia. The association between frugivores and the proportional abundance of zoochory requires further research, as tree recruitment not only depends on dispersal vectors but also on conditions that favour or limit seedling recruitment across forest types

    Geography and ecology shape the phylogenetic composition of Amazonian tree communities

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    Aim: Amazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types. Location: Amazonia. Taxon: Angiosperms (Magnoliids; Monocots; Eudicots). Methods: Data for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran\u27s eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny. Results: In the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R2^{2} = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R2^{2} = 28%). A greater number of lineages were significant indicators of geographic regions than forest types. Main Conclusion: Numerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions

    Geography and ecology shape the phylogenetic composition of Amazonian tree communities

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    AimAmazonia hosts more tree species from numerous evolutionary lineages, both young and ancient, than any other biogeographic region. Previous studies have shown that tree lineages colonized multiple edaphic environments and dispersed widely across Amazonia, leading to a hypothesis, which we test, that lineages should not be strongly associated with either geographic regions or edaphic forest types.LocationAmazonia.TaxonAngiosperms (Magnoliids; Monocots; Eudicots).MethodsData for the abundance of 5082 tree species in 1989 plots were combined with a mega-phylogeny. We applied evolutionary ordination to assess how phylogenetic composition varies across Amazonia. We used variation partitioning and Moran's eigenvector maps (MEM) to test and quantify the separate and joint contributions of spatial and environmental variables to explain the phylogenetic composition of plots. We tested the indicator value of lineages for geographic regions and edaphic forest types and mapped associations onto the phylogeny.ResultsIn the terra firme and várzea forest types, the phylogenetic composition varies by geographic region, but the igapó and white-sand forest types retain a unique evolutionary signature regardless of region. Overall, we find that soil chemistry, climate and topography explain 24% of the variation in phylogenetic composition, with 79% of that variation being spatially structured (R2 = 19% overall for combined spatial/environmental effects). The phylogenetic composition also shows substantial spatial patterns not related to the environmental variables we quantified (R2 = 28%). A greater number of lineages were significant indicators of geographic regions than forest types.Main ConclusionNumerous tree lineages, including some ancient ones (>66 Ma), show strong associations with geographic regions and edaphic forest types of Amazonia. This shows that specialization in specific edaphic environments has played a long-standing role in the evolutionary assembly of Amazonian forests. Furthermore, many lineages, even those that have dispersed across Amazonia, dominate within a specific region, likely because of phylogenetically conserved niches for environmental conditions that are prevalent within regions

    Mapping density, diversity and species-richness of the Amazon tree flora

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    Using 2.046 botanically-inventoried tree plots across the largest tropical forest on Earth, we mapped tree species-diversity and tree species-richness at 0.1-degree resolution, and investigated drivers for diversity and richness. Using only location, stratified by forest type, as predictor, our spatial model, to the best of our knowledge, provides the most accurate map of tree diversity in Amazonia to date, explaining approximately 70% of the tree diversity and species-richness. Large soil-forest combinations determine a significant percentage of the variation in tree species-richness and tree alpha-diversity in Amazonian forest-plots. We suggest that the size and fragmentation of these systems drive their large-scale diversity patterns and hence local diversity. A model not using location but cumulative water deficit, tree density, and temperature seasonality explains 47% of the tree species-richness in the terra-firme forest in Amazonia. Over large areas across Amazonia, residuals of this relationship are small and poorly spatially structured, suggesting that much of the residual variation may be local. The Guyana Shield area has consistently negative residuals, showing that this area has lower tree species-richness than expected by our models. We provide extensive plot meta-data, including tree density, tree alpha-diversity and tree species-richness results and gridded maps at 0.1-degree resolution
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