16 documents found, page 1 of 2

Sediment origin and budget in Sepetiba Bay (Brazil) - an approach based on mult...

Sediment origin and transport were determined in a shallow 447 km2 coastal lagoon in Brazil, using the distribution of major elements in bottom and suspended sediments. Applying multivariate analysis, the sum of normalized concentrations of Ti, Fe, and Al in sediments was selected to trace the terrigenous influence in bottom sediments, whereas Ca, Si, and K were used as indicators of marine influence. Sepetiba ...

Cadmium and zinc source assessment in the Sepetiba Bay and basin region

Industrial and weathering inputs of Cd and Zn to the Sepetiba Bay and basin were assessed, based on production parameters obtained from local environment and industry authorities, and literature data. The results are compared with similar evaluations from other coastal regions and field data obtained in measuring Zn and Cd transport by rivers, direct run-off and atmospheric deposition in the region. Cadmium and...

Ecological and environmental factors affecting transmission of sylvatic yellow ...

Background: Yellow fever virus (YFV) is an arbovirus that, despite the existence of a safe and effective vaccine, continues to cause outbreaks of varying dimensions in the Americas and Africa. Between 2017 and 2019, Brazil registered un unprecedented sylvatic YFV outbreak whose severity was the result of its spread into zones of the Atlantic Forest with no signals of viral circulation for nearly 80 years. Metho...

Evaluating probabilistic dengue risk forecasts from a prototype early warning s...

Made available in DSpace on 2022-04-28T19:03:04Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-02-24; Recently, a prototype dengue early warning system was developed to produce probabilistic forecasts of dengue risk three months ahead of the 2014 World Cup in Brazil. Here, we evaluate the categorical dengue forecasts across all microregions in Brazil, using dengue cases reported in June 2014 to validate...

Análise dos padrões espaço-temporais das internações por diarreia e do clima na...

As diarreias e gastroenterites constituem um importante problema de saúde pública no Brasil e no mundo e a sua dinâmica sazonal de ocorrência está associada a fatores ligados às condições ambientais, tais como o clima. Esta pesquisa estudou o comportamento temporal das internações hospitalares motivadas por doenças diarreicas e gastroenterites de origem infecciosa presumível (DGOIP) nas 27 capitais brasileiras,...

Dinâmica espaço-temporal da dengue no Distrito Federal, Brasil : ocorrência e p...

O Distrito Federal (DF) apresenta características particulares que favorecem a introdução, reprodução, disseminação e permanência do vetor e dos vírus da dengue. O objetivo deste trabalho foi analisar os padrões espaço-temporais das epidemias de dengue nas Regiões Administrativas (RAs) do DF no período de janeiro de 2007 a dezembro de 2017. Utilizando o modelo da série parcial de Fourier, obteve-se uma assinatu...

Toward an early warning system for health issues related to particulate matter ...

: PM2.5 severely affects human health. Remotely sensed (RS) data can be used to estimate PM2.5 concentrations and population exposure, and therefore to explain acute respiratory disorders. However, available global PM2.5 concentration forecast products derived from models assimilating RS data have not yet been exploited to generate early alerts for respiratory problems in Brazil. We investigated the feasibility...

As regiões de saúde no Brasil segundo internações : método para apoio na region...

Este estudo aborda as regionalizações da saúde em várias escalas espaciais com base no fluxo de pacientes. Para isso, foram analisados dados por meio do relacionamento das informações de origem e destino das interações realizadas em nível municipal no Brasil em 2016. A análise tem como base a teoria dos grafos e utiliza um algoritmo de modularidade que busca agrupar municípios em comunidades que detêm grande nú...

Distribuição Espacial da Malária em Manaus, utilizando geoprocessamento.

Regionalization of a landscape-based hazard index of malaria transmission : an ...

Identifying and assessing the relative effects of the numerous determinants of malaria transmission, at different spatial scales and resolutions, is of primary importance in defining control strategies and reaching the goal of the elimination of malaria. In this context, based on a knowledge-based model, a normalized landscape-based hazard index (NLHI) was established at a local scale, using a 10 m spatial reso...