Materiais Avançados

Abstract: Metal complexes with oxindole- or benzimidazole-based ligands have been extensively studied regarding their antiproliferative activities. Herein, some copper(II) and analogous zinc(II) complexes with imine ligands containing both oxindole- and benzimidazolescaffolds had their toxicity toward cancerous cells evaluated. These compounds are derived from an endogenous oxindole (isatin), through a condensation Leia mais…

Abstract: This study investigates the influence of different polymorphs and concentrations of niobium pentoxide (Nb₂O₅) on the aging resistance and cytotoxicity of Y₂O₃-stabilized zirconia (ZrO₂) bioceramics. The goal was toevaluate the structural, mechanical, and biological responses of ZrO₂–Y₂O₃–Nb₂O₅ systems, addressing concerns related to low-temperature degradation (LTD) in biomedical applications. Different Leia mais…

Abstract: This study proposes the development of sustainable polyurethane (PU) composites based on castor oil, reinforced with Brazilian satintail fibers (Imperata brasiliensis), aiming at their application as sorbent materials for the removal of oils in contaminated environments. Formulations with different fiber contents were prepared to investigate the impact on the Leia mais…

Abstract: Toxic elements (arsenic,cadmium,lead,andmercury) are public health concerns and listed as priority pollutants for their severe toxic effects, especially in children, whose biological systems are developing. The aim of this study was to determine the concentrations of toxic elements (As,Cd,Pb,andHg) in plastic utensils using x-ray fluorescence and pecific migration tests. Leia mais…

Abstract: Cold spray (CS) is a solid-state technique for producing metallic coatings through high-velocity powder particle deposition. In this work, large-scale molecular dynamics (MD) simulations were performed to model the sequential impact of gold particles to investigate the deformation behavior of the particles and the evolution of their microstructure during Leia mais…