176 research outputs found

    INCUBAÇÃO DE ARGISSOLO VERMELHO AMARELO distrófico COM APLICAÇÃO DE DOSES CRESCENTES DE CaCO3 PARA NEUTRALIZAÇÃO DA ACIDEZ TROCÁVEL

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        The objective of this work is to neutralize the effect of exchangeable acidity of a RED-YELLOW ARGISOIL dystrophic incubated with application of increasing doses of CaCO3. This work was performed at the Laboratory of Soil Science UEMA / CESI. Soil samples were collected in a RED-YELLOW ARGISOIL dystrophic in Exhibition Park of Imperatriz/MA, at 0-20 cm depth. After collecting the samples, they were carried to the laboratory, air-dried, then broken, passed through a sieve of 2 mm mesh size and mixed and routed to the soil laboratory for routine analysis. Soil samples were placed hatching increasing doses of calcium carbonate equivalent to 0, 1, 2, 3, 4, 5, 8 and 10 t.ha-1 (CaCO3), with ten repetitions, in a completely randomized design. After 30 days the start of incubation was taken from each experimental samples to determine the exchangeable acidity (Al3+), in order to determine the equation of the curve and the neutralization of soil analysis. There were significant differences between treatments with respect to Al3+. The amount used to neutralize the exchangeable acidity determined by the regression equation for the study of soil in Exhibition Park of Imperatriz/MA was 8,8 t.ha-1 of CaCO3.   KEYWORDS: Aluminum. Neutralization curve. Production.        El objetivo de este estudio fue el de neutralizar el efecto de la acidez intercambiable de un ARGISSOL ROJO AMARILLO distrófico incubado con la aplicación de dosis crecientes de CaCO3. Este trabajo se realizó en el Laboratorio de Suelos UEMA/CESI. Las muestras de suelo se recogieron en ARGISSOL ROJO AMARILLO distrófico en Parque de Exposiciones de Imperatriz-MA en la profundidad de 0-20 cm. Después de recoger las muestras, se llevaron al laboratorio para secar al aire y destorroar pasandolas por una malla de 2 mm de tamaño para mezclar y envían al laboratorio de suelo para análisis de rutina. En las muestras de suelo se pusieron dosis crecientes de la eclosión equivalente a 0, 1, 2, 3, 4, 5, 8 y 10 t ha-1 (CaCO3) carbonato de calcio, con diez repeticiones utilizando un diseño experimental aleatorizado. Trinta días después de el inicio de incubación fueran tomadas las muestras de cada unidad experimental para determinación de la acidez intercambiable (Al3+), con el fin de determinar la curva y la ecuación de neutralización de la acidez intercambiable del suelo. Hubo diferencia significativa entre los tratamientos con respecto ao Al3+. La cantidad utilizada para neutralizar la acidez intercambiable determinada por la ecuación de regresión para el suelo de el Parque de Exposiciones de Imperatriz-MA que fue de 8.8 t ha-1 CaCO3.   PALABRAS-CLAVE: Aluminio. La Producción. Curva de neutralización.    O objetivo deste trabalho foi neutralizar o efeito da acidez trocável de um ARGISSOLO VERMELHO AMARELO distrófico incubado com aplicação de doses crescentes de CaCO3. O presente trabalho foi realizado no Laboratório de Solos da UEMA/CESI. As amostras de solo foram coletadas em um ARGISSOLO VERMELHO AMARELHO distrófico no Parque de Exposição de Imperatriz-MA, na camada de 0-20 cm de profundidade. Após a coleta das amostras, estas foram conduzidas para o laboratório, secas ao ar, depois destorroados, passadas em peneira de 2 mm de abertura de malha e homogeneizadas e encaminhadas para o laboratório de solos para análise de rotina. Nas amostras de solo foram postas para incubação doses crescentes de carbonato de cálcio equivalentes a 0, 1, 2, 3, 4, 5, 8 e 10 t.ha-1 (CaCO3), com dez repetições, em um delineamento experimental inteiramente casualizado. Após 30 dias do início de incubação foi feita amostras de cada unidade experimental para determinar a acidez trocável (Al3+), a fim de determinar a curva e equação de neutralização da acidez trocável do solo. Houve diferença significativa entre os tratamentos, em relação ao Al3+. A quantidade usada para neutralizar a acidez trocável determinada pela equação de regressão para o solo em estudo do Parque de Exposição de Imperatriz/MA foi de 8,8 t.ha-1 de CaCO3.   PALAVRAS-CHAVE: Alumínio. Curva de neutralização. Produção

    Prevalência de colonização por Streptococcus agalactiae em gestantes / Prevalence of colonization by Streptococcus agalactiae in pregnant women

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    Introdução: O Streptococcus agalactiae ou Estreptococo do Grupo B de Lancefield (EGB) é uma bactéria gram-positiva presente naturalmente na microbiota residente nas mucosas de alguns seres humanos. A relevância clínica ocorre devido ao risco de desenvolvimento de doenças como sepse, pneumonia e meningite em decorrência da contaminação vertical de neonatos de parturientes colonizadas. O presente trabalho objetivou verificar a prevalência de Streptococcus agalactiae em gestantes na cidade de Montes Claros, MG. Métodos: Trata-se de um estudo quantitativo, descritivo de delineamento transversal, do tipo documental retrospectivo. Os dados foram coletados a partir de 535 registros dos relatórios de atendimentos das pacientes gestantes submetidas ao exame microbiológico para pesquisa de Streptococcus agalactiae em uma rede de laboratórios de análises clínicas, localizados na cidade de Montes Claros (MG), no período de janeiro de 2015 a abril de 2018. A coleta e o processamento do material foram realizados de acordo com as recomendações do CDC (2010). Resultados: Foram avaliados os resultados de exames microbiológicos para pesquisa de Streptococcus agalactiae de 535 gestantes com idades entre 15 e 47 anos, que se encontravam na idade gestacional entre 35 e 38 semanas e que foram realizados no período de janeiro de 2015 a abril de 2018. Das gestantes pesquisadas, a maioria (n.495/92,5%) realizou a pesquisa da bactéria em ambos sítios anatômicos (vaginal/anal), pode-se observar que foram atendidas em regime particular (74,4%) e um pequeno percentual pertencia a Rede Cegonha (2,2 %). Foi possível observar que dessas pacientes analisadas, 82 apresentaram resultados positivos para GBS, o que correspondeu à prevalência de 15,3%. Conclusão: pode-se concluir diante da significativa prevalência encontrada (15,3%) e da patogenicidade aos neonatos, que a pesquisa da colonização de gestantes pelo Streptococcus agalactiae deve ser ampliada como medida assistencial pré-natal nos serviços de saúde, de forma que 100% das gestantes sejam pesquisadas em dois sítios de coleta, garantindo a segurança dos neonatos

    Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences

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    The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & Nemésio 2007; Donegan 2008, 2009; Nemésio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on 18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based researchers who signed it in the short time span from 20 September to 6 October 2016

    Riociguat treatment in patients with chronic thromboembolic pulmonary hypertension: Final safety data from the EXPERT registry

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    Objective: The soluble guanylate cyclase stimulator riociguat is approved for the treatment of adult patients with pulmonary arterial hypertension (PAH) and inoperable or persistent/recurrent chronic thromboembolic pulmonary hypertension (CTEPH) following Phase

    Discutindo a educação ambiental no cotidiano escolar: desenvolvimento de projetos na escola formação inicial e continuada de professores

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    A presente pesquisa buscou discutir como a Educação Ambiental (EA) vem sendo trabalhada, no Ensino Fundamental e como os docentes desta escola compreendem e vem inserindo a EA no cotidiano escolar., em uma escola estadual do município de Tangará da Serra/MT, Brasil. Para tanto, realizou-se entrevistas com os professores que fazem parte de um projeto interdisciplinar de EA na escola pesquisada. Verificou-se que o projeto da escola não vem conseguindo alcançar os objetivos propostos por: desconhecimento do mesmo, pelos professores; formação deficiente dos professores, não entendimento da EA como processo de ensino-aprendizagem, falta de recursos didáticos, planejamento inadequado das atividades. A partir dessa constatação, procurou-se debater a impossibilidade de tratar do tema fora do trabalho interdisciplinar, bem como, e principalmente, a importância de um estudo mais aprofundado de EA, vinculando teoria e prática, tanto na formação docente, como em projetos escolares, a fim de fugir do tradicional vínculo “EA e ecologia, lixo e horta”.Facultad de Humanidades y Ciencias de la Educació

    stairs and fire

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    Theileria sp. in water buffaloes from Maranhão State, northeastern Brazil

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    Abstract Anaplasma marginale and piroplasm species are widespread among Brazilian cattle herds. Both of these tick-borne pathogens hamper livestock production and cause a significant economic impact. Although buffaloes have demonstrated a high level of adaptability, data on tick-borne pathogens are scarcely reported in Brazil. Thus, the aim of this study was to screen water buffaloes from the state of Maranhão for piroplasm and A. marginale occurrence using PCR assays. All samples were negative for A. marginale. One of the 287 (0.35%) water buffaloes tested was positive for Theileria sp. Sequencing of the 18S rDNA fragment (356 bp) showed that the Theileria sp. identified was closely related to the T. buffeli /orientalis group. Future studies on the clinical signs of infection and the main vector in this country are needed

    Search for narrow resonances using the dijet mass spectrum in pp collisions at s√=8  TeV

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    Results are presented of a search for the production of new particles decaying to pairs of partons (quarks, antiquarks, or gluons), in the dijet mass spectrum in proton-proton collisions at s√=8  TeV. The data sample corresponds to an integrated luminosity of 4.0  fb−1, collected with the CMS detector at the LHC in 2012. No significant evidence for narrow resonance production is observed. Upper limits are set at the 95% confidence level on the production cross section of hypothetical new particles decaying to quark-quark, quark-gluon, or gluon-gluon final states. These limits are then translated into lower limits on the masses of new resonances in specific scenarios of physics beyond the standard model. The limits reach up to 4.8 TeV, depending on the model, and extend previous exclusions from similar searches performed at lower collision energies. For the first time mass limits are set for the Randall–Sundrum graviton model in the dijet channel

    NEOTROPICAL CARNIVORES: a data set on carnivore distribution in the Neotropics

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    Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropical region: Canidae; Felidae; Mephitidae; Mustelidae; Otariidae; Phocidae; Procyonidae; and Ursidae. Herein, we include published and unpublished data on native terrestrial Neotropical carnivores (Canidae; Felidae; Mephitidae; Mustelidae; Procyonidae; and Ursidae). NEOTROPICAL CARNIVORES is a publicly available data set that includes 99,605 data entries from 35,511 unique georeferenced coordinates. Detection/non-detection and quantitative data were obtained from 1818 to 2018 by researchers, governmental agencies, non-governmental organizations, and private consultants. Data were collected using several methods including camera trapping, museum collections, roadkill, line transect, and opportunistic records. Literature (peer-reviewed and grey literature) from Portuguese, Spanish and English were incorporated in this compilation. Most of the data set consists of detection data entries (n = 79,343; 79.7%) but also includes non-detection data (n = 20,262; 20.3%). Of those, 43.3% also include count data (n = 43,151). The information available in NEOTROPICAL CARNIVORES will contribute to macroecological, ecological, and conservation questions in multiple spatio-temporal perspectives. As carnivores play key roles in trophic interactions, a better understanding of their distribution and habitat requirements are essential to establish conservation management plans and safeguard the future ecological health of Neotropical ecosystems. Our data paper, combined with other large-scale data sets, has great potential to clarify species distribution and related ecological processes within the Neotropics. There are no copyright restrictions and no restriction for using data from this data paper, as long as the data paper is cited as the source of the information used. We also request that users inform us of how they intend to use the data

    Neotropical freshwater fisheries : A dataset of occurrence and abundance of freshwater fishes in the Neotropics

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    The Neotropical region hosts 4225 freshwater fish species, ranking first among the world's most diverse regions for freshwater fishes. Our NEOTROPICAL FRESHWATER FISHES data set is the first to produce a large-scale Neotropical freshwater fish inventory, covering the entire Neotropical region from Mexico and the Caribbean in the north to the southern limits in Argentina, Paraguay, Chile, and Uruguay. We compiled 185,787 distribution records, with unique georeferenced coordinates, for the 4225 species, represented by occurrence and abundance data. The number of species for the most numerous orders are as follows: Characiformes (1289), Siluriformes (1384), Cichliformes (354), Cyprinodontiformes (245), and Gymnotiformes (135). The most recorded species was the characid Astyanax fasciatus (4696 records). We registered 116,802 distribution records for native species, compared to 1802 distribution records for nonnative species. The main aim of the NEOTROPICAL FRESHWATER FISHES data set was to make these occurrence and abundance data accessible for international researchers to develop ecological and macroecological studies, from local to regional scales, with focal fish species, families, or orders. We anticipate that the NEOTROPICAL FRESHWATER FISHES data set will be valuable for studies on a wide range of ecological processes, such as trophic cascades, fishery pressure, the effects of habitat loss and fragmentation, and the impacts of species invasion and climate change. There are no copyright restrictions on the data, and please cite this data paper when using the data in publications
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