The occurrence of emerging pollutants in aquatic matrices has raised environmental concern because of their persistence and potential toxicity. This study assessed caffeine degradation and toxicity reduction using zinc telluride functionalized with reduced graphene oxide as heterogeneous photocatalyst. The catalysts were synthesized by the wet impregnation method with excess solvent, and characterized by physicochemical and op...

Open dumping (OD) is uncontrolled dumping of solid waste (SW) in an environment. It involves the illegal practice of dumping waste in areas not designated for waste management, such as open lands, flowing water bodies, or exposed waste piles. OD can contain a complex mixture of organic fractions, and various contaminants that, when infiltrated into the soil through leachate, compromise its stability and resistance. These conta...

This study investigated the performance of four hydrochars derived from açaí seeds and curauá mucilage for methylene blue (MB) removal from aqueous solutions. Untreated (AWR, CWR) and phosphoric acid-treated (AAR, CAR) hydrochars were produced via hydrothermal carbonization and comprehensively characterized by Boehm titration, pH pzc , FTIR, SEM, TG/DTG, surface area, and elemental analyses. A 2 3 - factorial experimental desi...

Along more than 2,500 km of tropical coastline north of Rio de Janeiro, the invasive coral Tubastraea spp. has primarily been observed on shipwrecks and oil platforms located on the outer continental shelf or slope. An exception is Baía de Todos os Santos (BTS), a large estuary near 13°S, where Tubastraea spp . has been repeatedly documented since its first occurrence in 2012. These reports have raised concerns about BTS poten...

Purpose Quantifying collagen in histological slides is essential for diagnosing and monitoring fibrosis. However, the combination of PicroSirius Red staining with polarized light microscopy, one of the standard techniques, requires expensive equipment and time-consuming procedures. This study investigated whether supervised machine learning algorithms applied to bright-field images could provide an automated and accurate metho...

Freshwater colonization is associated with profound shifts in the reproductive traits of invertebrates, and these phenomena are still rarely investigated in an integrated framework across closely related species. In this study, we examined three species of shrimps of the genus Palaemon , each occupying distinct habitat types, to identify how the transition to freshwater habitats shapes reproductive investment strategies. For e...

Sternochetus mangiferae is a pest of mangoes, occurring worldwide in regions where mangoes are cultivated. In Brazil, this insect was first detected in 2014 in Seropédica, Rio de Janeiro, and since then, various measures and studies have been conducted to contain, monitor and potentially eradicate it. Semiochemicals may provide feasible targets to develop sensitive detection and monitoring tools. Therefore, this study aimed to...

Background and aims In highly weathered soils of central Amazonia, where nutrients such as phosphorus (P) and base cations are scarce, fertilization experiments have demonstrated above- and belowground effects on total net primary productivity (NPP). This study examined how fine root stocks and turnover responded to added nutrients over a two-year period. We predicted that adding a limiting nutrient would decrease fine root st...