Suchergebnisse

In this work, films containing AgNPs were obtained by different green synthesis techniques (AgNP in situ and AgNP L). The inclusion of nanoparticles in the starch matrix improved both mechanical and barrier properties. The migration of AgNPs from the nanocomposite material to three food simulants (water, 3% v/v acetic acid and 15% v/v ethanol) was studied. The experimental data were fitted by using different widely accepted mathematical models (Fickian, Ritger and Peppas, and Weibull), indicating that the AgNP migration followed a complex mechanism. The silver concentration (mg Ag per kg of simulant) that was released from the nanocomposite films was higher for the samples with AgNPs in situ than for those containing AgNP L. Likewise, the maximum release value (0.141 mg/dm2 for AgNPs in situ in acetic acid simulant) was lower than the limits proposed by the legislation (European Commission and MERCOSUR; 10 and 8 mg/dm2, respectively). The replacement of conventional plastic materials by biodegradable ones requires the evaluation of bio-disintegration tests in soil. In this sense, a period of 90 days was necessary to obtain ≥50% weight loss in both nanocomposite films. Additionally, the bio-disintegration of the samples did not contribute with phytotoxic compounds to the soil, allowing the germination of fast-growing seeds.

The field of criminal psychology involves delving into psychological profiles prone to accepting and justifying sexist attitudes that support sexual violence against adult women (SVAW). The aim of the current study is to analyze the mediating role of moral disengagement in the relationships between dark triad personality traits (Machiavellianism, psychopathy, and narcissism) and ambivalent sexism in a sample of 74 male perpetrators of sexual violence against women ( M = 40.58; SD = 10.05) convicted of intimate partner violence (IPV) and sexual assault and 160 community men ( M = 43.54; SD = 10.63). Since there were no significant differences in the measured variables between individuals convicted of IPV and those convicted of sexual assault, these two groups were combined into a single group of perpetrators of sexual violence against women. A comparison of incarcerated and community men showed that perpetrators of sexual violence against women reported significantly higher levels of ambivalent sexism, moral disengagement, and psychopathy than community men. The moderated mediational model showed that the dark triad was not directly associated with ambivalent sexism, but the relationship was fully mediated by moral disengagement mechanisms. Moreover, the interdependence of the variables evaluated was moderated by group. The moral disengagement mechanisms that explain both hostile and benevolent sexism were associated with Machiavellianism and psychopathy among perpetrators of sexual violence against women, whereas among community men, these mechanisms were associated with Machiavellianism and narcissism. These findings are discussed as they pertain to the treatment of perpetrators of sexual violence against women.