Ecotoxicity of alkaline residue from the pulp and paper industry to soil faunal organisms.

The increased production and expanding demand for cellulosic products have required companies to provide solutions for the proper disposal of generated residues without compromising soil quality. In this context, the current research aimed at evaluating the ecotoxicological impacts of dregs application in subtropical soils. The experiments were carried out with the earthworm Eisenia andrei, the springtail Folsomia candida, and the potworm Enchytraeus crypticus in two subtropical soils (Neosol and Cambisol) collected in the southern region of Brazil.

Simplified fish larval supply in coastal areas after a dam burst in Brazil.

Coastal and estuarine systems play an important role in the maintenance of marine biodiversity, providing nursery, feeding, developmental and reproductive areas for terrestrial and aquatic species. The Fundão dam collapse is considered one of the biggest environmental disasters in Brazil, causing great social, economic and ecological damage in the affected areas. In our study, we used beta diversity and its components as a tool to monitor the spatio-temporal variation of fish larvae in four marine areas adjacent to the Doce River.

Highest terrestrial He/He credibly from the core.

The observation that many lavas associated with mantle plumes have higher He/He ratios than the upper convecting mantle underpins geophysical, geodynamic and geochemical models of Earth's deep interior. High He/He ratios are thought to derive from the solar nebula or from solar-wind-irradiated material that became incorporated into Earth during early planetary accretion. Traditionally, this high-He/He component has been considered intrinsic to the mantle, having avoided outgassing caused by giant impacts and billions of years of mantle convection.

[Delirium superimposed on dementia : Early detection and treatment].

Background: Delirium superimposed on dementia (DSD) is a widespread but often undetected problem. Additional delirium significantly reduces the quality of life in patients with dementia. Awareness of this condition must be increased among professionals to recognize its development at an early stage, distinguish it from dementia and treat it accordingly.