Publications by authors named "M L Vieira"

Enteropathogenic (EPEC) strains are subdivided into typical (tEPEC) and atypical (aEPEC) according to the presence or absence of a virulence-associated plasmid called pEAF. Our research group has previously demonstrated that two aEPEC strains, 0421-1 and 3991-1, induce an increase in mucus production in a rabbit ileal loop model . This phenomenon was not observed with a tEPEC prototype strain.

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The presence of complex dyes, which possess four or more aromatic rings, is pervasive in environmental matrices. Nanomaterials offer a promising avenue for their removal. In this study, we synthesized novel magnetic nanocomposites comprising nanochitosan (nCS) and iron nanoparticles through the application of green and conventional protocols.

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Identifying how species richness or diversity changes with different proportions of natural and anthropized environments in the landscape is important for landscape management for conservation. Here, we propose a new method to assess biodiversity changes in landscapes with varying proportions of habitat types. The algorithm is based on the resampling of individuals recorded in different habitats considering both the proportion occupied by each habitat in the landscape and the number of individuals recorded in each habitat.

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Article Synopsis
  • Cigarette butts (CBs) are significant pollutants, and this study investigates their effects on Artemia franciscana in different temperature conditions, highlighting the environmental challenges they pose.
  • The research included acute and sub-chronic exposure tests to assess toxicity levels of smoked and non-smoked cigarette butts at temperatures of 25°C and 30°C.
  • Findings revealed that higher temperatures increased toxicity, disrupting crucial biological functions like enzyme activity and promoting oxidative damage, underscoring the need to address CB pollution in the context of climate change.
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