3,709 research outputs found

    Complete Genome Sequence of Xanthomonas arboricola pv. juglandis 417, a Copper-Resistant Strain Isolated from Juglans regia L.

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    Here, we report the complete genome sequence of Xanthomonas arboricola pv. juglandis 417, a copper-resistant strain isolated from a blighted walnut fruit (Juglans regia L. cv. Chandler). The genome consists of a single chromosome (5,218 kb)

    The prognostic value of a normal oral glucose tolerance test in pregnant women who tested positive at screening: a validation study

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    <p>Abstract</p> <p>Background</p> <p>Controversies surround a diagnosis of gestational diabetes mellitus (GDM). The objective of this study was to evaluate the oral glucose tolerance test (OGTT) for the prediction of adverse gestational and perinatal outcomes in pregnant women with a positive screening test for diabetes mellitus and a negative diagnosis, i.e. a normal 3-hour OGTT.</p> <p>Methods</p> <p>This validation study evaluated 409 pregnant women who tested positive for diabetes mellitus at screening. Perinatal and maternal outcomes were considered. Sensitivity and specificity were calculated for each of the values of the OGTT as a diagnostic test, with the gold standard being perinatal outcome.</p> <p>Results</p> <p>The most frequent risk factors were obesity, arterial hypertension and advanced maternal age. The most common neonatal outcomes were large-for-gestational-age infants, Cesarean delivery and preterm birth. A fasting blood glucose level of 87 mg/dL was the most powerful predictor of adverse perinatal outcome.</p> <p>Conclusions</p> <p>At the cut-off level adopted by the American Diabetes Association, gestational OGTT was able to successfully identify in which pregnant women outcome would be unfavorable.</p

    An integrative approach assesses the intraspecific variations of Procamallanus (Spirocamallanus) inopinatus, a common parasite in Neotropical freshwater fishes, and the phylogenetic patterns of Camallanidae

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    Integrative taxonomy was used to evaluate two component populations of Procamallanus (Spirocamallanus) inopinatus in Brazil and the phylogeny Camallanidae. Parasite populations were collected in the characiform Anostomoides passionis from River Xingu (Amazon basin) and Megaleporinus elongatus from River Miranda (Paraguay basin). Morphology was analysed using light and scanning electron microscopy (SEM). Genetic characterization was based on partial sequences of the 18S and 28S rDNA, and COI mtDNA. Phylogenies were based on 18S and COI due to data availability. Generalized Mixed Yule Coalescent (GMYC), Poisson Tree Process (PTP) and BEAST were used for species delimitation and validation. SEM revealed for the first time the presence of minute denticles and pore-like structures surrounding the oral opening, phasmids in females and confirmed other important morphological aspects. Statistical comparison between the two-component populations indicated morphometric variations, especially among males. The different component population of P. (S.) inopinatus showed variable morphometry, but uniform morphology and were validated as conspecific by the GMYC, PTP and BEAST. Some camallanid sequences in GenBank have incorrect taxonomic labelling. Host, environment and geographic aspects seem to be related to some lineages within Camallanidae; however, their real phylogenetic meanings are still unclear.Fil: Ailan Choke, Lorena Gisela. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Instituto para el Estudio de la Biodiversidad de Invertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; ArgentinaFil: Tavares, Luiz E. R.. Universidade Federal do Mato Grosso do Sul; BrasilFil: Luque, José L.. Universidade Federal do Rio de Janeiro; BrasilFil: Pereira, Felipe B.. Universidade Federal de Minas Gerais. Instituto de Ciências Biológicas; Brasi

    Avaliação ambiental estratégica para programas de saneamento básico: Construindo orientações para a etapa de scoping.

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    O tema da pesquisa é a aplicação de Avaliação Ambiental Estratégica (AAE) em Programas de saneamento básico (abastecimento de água, esgotamento sanitário, manejo de resíduos sólidos e manejo de águas pluviais). A AAE tem a proposta de auxiliar o planejamento de Políticas, Planos e Programas, inserindo a questão ambiental. No caso do saneamento básico, a poluição das águas é um fator importante a ser considerado. A AAE possui a vantagem de preceder a execução das ações, atuando nas instâncias estratégicas de decisão e fornecendo opções e alternativas mais sustentáveis. As políticas públicas de saneamento básico no Brasil estão passando por uma reestruturação. Após a conclusão da elaboração das Políticas e Planos em andamento, deverão ser criados ou revistos os Programas. A AAE pode ser útil na estruturação de Programas da área de saneamento básico, promovendo uma abordagem voltada para a sustentabilidade. A etapa de scoping constitui uma questão chave no processo de AAE. No scoping são definidas as questões relevantes e estratégicas que compõem o conteúdo da avaliação. Estas questões orientam a verificação de alternativas e opções, a avaliação dos impactos ambientais potenciais e as informações importantes a serem consideradas no processo de planejamento e decisão. O objetivo desta pesquisa foi a construção de orientações para a etapa de scoping da AAE aplicada em Programas de saneamento básico. Estas orientações foram referentes a dois grupos de aspectos distintos, relacionados a como realizar a AAE e a quais elementos considerar na avaliação. As orientações do primeiro grupo constituem a proposição de um conjunto de procedimentos para o processo de AAE e para a etapa específica de scoping. A escolha dos procedimentos foi baseada na comparação de modelos e guias de aplicação do instrumento e na análise das etapas e das atividades do processo. O segundo grupo de orientações identificou elementos importantes para o conteúdo do scoping. O método utilizado foi o estudo de casos múltiplos de Programas de saneamento básico. Houve uma abordagem multidimensional que considerou os aspectos biofísicos, econômicos, sociais, institucionais e estratégicos do ambiente. Foram identificadas as questões relevantes para a avaliação. O resultado final da pesquisa foi a proposição de um conjunto de orientações que pode auxiliar como base de referência para a elaboração da etapa de scoping para a aplicação da AAE em Programas de saneamento básico. É proposta, portanto, uma forma inovadora de planejamento e gestão das águas e do ambiente por meio de políticas públicas adequadas, com o potencial de reduzir a poluição das águas e incentivar a sociedade a ser mais sustentável

    Description of seedless grape drying and determination of drying rate

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    This article compares some empirical models, with one or two parameters, used to describe seedless grape drying at low temperature. Chosen models have, as a common characteristic, an analytical expression for the derivative of dimensionless moisture content with respect to time. Comparison of the results for the simulations of drying kinetics indicates that, despite Page and Silva et alli models well represent the process, the best model is Peleg. For this model, the statistical indicators of the simulation can be considered excellent (the determination coefficient is R2 = 0.99944 and the chi-square is χ^2 = 1.2335 x 10-3)

    Phenolic profile and antioxidant activity of commercial grape juices from the São Francisco Valley, Northeastern of Brazil.

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    In recent years, The Sub-middle region of the São Francisco Valley (SFV), located in the Northeast of Brazil, has invested in the production of grape juice from new Brazilian varieties developed for preparation of high quality juices, such as Isabel Precoce (Vitis labrusca L.) and hybrids (Vitis labrusca L. x Vitis vinifera L.) BRS Violeta, BRS Cora and BRS Magna (Lima et al., 2014). Grape juice in this region have been highlighted by the good bioactive content, high antioxidant activity associated with phenolic compounds and to promote anti-inflammatory activity in consumers (Toscano et al., 2015)

    A comparison between time of exposure, number of pitfall traps and the sampling cost to capture ground-dwelling poneromorph ants (Hymenoptera: Formicidae)

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    Using effective survey protocols to address the effects of environmental change are key to saving time, resources and costs. Although exhaustive sampling in any location has been shown as impractical, biodiversity sampling projects must capture sufficient information to show how species assemblages change with the environmental variables. This study investigated time of exposure in the field and the number of pitfall traps that efficiently sampled poneromorph ants in 30 250 m long plots across an area of 25 km2 of tropical rain forest in Brazil. The treatments used for the surveys included two days and 300 traps, 14 days and 300 traps, 14 days and 750 traps, and were considered the minimum, intermediate and maximum sampling efforts, respectively. We characterized each assemblage of ants in relation to a gradient of soil texture, terrain slope and leaf and branch litter volume, and then tested whether the ecological relationships observed with the maximum effort were comparable to data on intermediate and minimum sampling efforts. We also estimated the cost-effectiveness of using the protocols in survey programs. The assemblage of species sampled during 14 days was similar to the assemblage captured during two days, indicating that the number of days influenced the assemblage similarity more than the number of sampling traps. All ecological patterns detected with the maximum effort were also captured with lesser sampling efforts. Overall, both the intermediate and minimum sampling efforts represented savings around 2640% of total project costs and 4345% of time to process the samples. We recommend that two days of trapping time combined with 300 pitfall traps is a highly effective shortcut for monitoring assessment, which can be applied to large-scale biodiversity surveys in tropical forests. © 2018 Universidade Estadual de Feira de Santana. All rights reserved

    Anthocyanin composition of young red wine cv. Ruby Cabernet and Syrah: effect of time and storage conditions.

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    The aim of this study was to evaluate the evolution of anthocyanins in red wines for 12 months of storage in bottles in two different conditions. The wine samples cv. Ruby Cabernet and cv. Syrah (Vitis vinifera L.) used for this study were produced in the Sub-middle São Francisco Valley, in the Northeast Region of Brazil, during the 2013 harvest
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