Publications by authors named "F M Dutra"

The ingestion of cotyledons or seeds of cocklebur () causes poisoning as a result of acute liver failure. Here we describe a spontaneous outbreak of toxicity in dairy cows in Uruguay. The outbreak occurred in the winter when the cows were fed sorghum silage contaminated with seeds.

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is a red seaweed used globally in various biotechnological processes. To ensure the content and stability of its bioactive compounds postharvest, suitable drying protocols must be adopted to provide high-quality raw materials for industrial use. This study aimed to analyze the influence of freeze-drying and oven-drying on the total phenolic content (TPC), total flavonoid content (TFC), antioxidant activity (FRAP and DPPH assays), total carotenoid content (TC), and lipase (LA) and protease activity (PA) of samples collected over the seasons in sea farms in southern Brazil.

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Article Synopsis
  • Density functional theory combined with small core pseudopotentials was used to calculate the redox potentials of actinides (Ac, Th, Pa) in aqueous solution, taking into account solvation effects through various models.
  • The geometry calculations for Ac(III), Th(IV), and Pa(V) aligned well with experimental data, and the redox potentials were mostly within ±0.2 V of experimental measurements, particularly using the COSMO model.
  • The study explored the redox pathways of Pa(V/IV), revealing that redox potentials shift to more negative values at higher pH, while positive values for Th and Pa in An(I/0) contrasts with negative
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Systemic candidiasis remains a significant public health concern worldwide, with high mortality rates despite available antifungal drugs. Drug-resistant strains add to the urgency for alternative therapies. In this context, vaccination has reemerged as a prominent immune-based strategy.

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The redox properties of the actinides in aqueous solution are important for fuel production/reprocessing and understanding the environmental impact of nuclear waste. The redox potentials for U, Np, Pu, and Am in oxidation states from 0 up to VII (as appropriate) in aqueous solutions have been predicted at the density functional theory level with the B3LYP functional, Stuttgart small core pseudopotential basis sets for the actinides, and explicit (30HO molecules)/implicit treatment of the aqueous solvent using the self-consistent reaction field COSMO and SMD approaches for the implicit solvation. The predictions of the structural parameters of clusters incorporating first and second solvation shells are consistent with the available experimental data.

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