de Barros Oliveira

In this work, a method for the detection and quantification of 47 psychoactive substances was successfully validated. The application of the method to 81 hair samples allowed the characterization of substance exposure patterns in a cohort of individuals associated with recreational drug use contexts.

The research design is illustrated in Fig. 1, while Table 1 provides details on the materials used in this study, including their trade names, manufacturers, and compositions. Table 1 List of materials, commercial brand, manufacturer, and composition Sample size calculation An initial sample size calculation was performed for the primary outcome (flexural strength), considering a two-tailed test, a 95% confidence level, 80% statistical power, and a 1:1 allocation ratio.

Background This manuscript reviews current knowledge on Mycoplasma hyopneumoniae, the primary agent of enzootic pneumonia in pigs, integrating advances in epidemiology, pathogenesis, immunity, diagnostics, and control. The pathogen is globally endemic, with transmission driven mainly by direct contact within a herd, and by purchase of animals and airborne transmission between herds.