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This paper presents a study on the variation of strain rate influence with the scale effect in quasi-brittle materials. Works in the literature report an increase of dynamic resistance with strain rate. To study this relation, a numerical model that combines the Finite Element Method and the Lattice Discrete Element Method is employed. This mixed model was implemented on the commercial software Abaqus/Explicit. The samples are prepared with FEM at the extremity and LDEM for the central part, which has a reduction in the crosssection, so the rupture occurs in the middle. In the simulations, four model specimens with dimensional variations were subjected to direct tensile testing with different strain rates. The results showed that with the increase of applied strain rate, the resistances also increase and the body dimension influences this behavior. The variation of the tensile strength is found without modifications on the elemental constitutive relationship or material parameters. At last, a method that could lead to an independent relationship between the dynamic intensification and the stain rate of scale effect is also proposed. [ABSTRACT FROM AUTHOR]

The rupture of the Fundão dam, located in the municipality of Mariana-MG, occurred in November 2015, brought serious socio-environmental consequences, among them, the interruption of water abstraction in several localities. Considering the risk associated with human health, this study aims to analyze the spat ial distribution of diarrheal diseases in children from zero to four years of age in the municipalities belonging to the Doce river watershed and their possible correlations with water supply and sewage services, as well as to investigate the possible influence of the rupture of the Fundão dam on the incidence rates of diarrheal diseases in the municipalities dependent on water capitation of the Doce river. Although there were no significant correlation between seasonality (Kruskal-Wallis), water and sewage services (Spearman) and the dam rupture on the incidence rates (Mann-Whitney),it was possible to observe that the infant population is the most vulnerable and the case distribution is concentrated over the years in the northern and eastern portions of the basin through spatial autocorrelation (Kernel and I de Moran).Therefore, it is necessary to adopt effective measures for the prevention and control of infantile diarrhea in the municipalities of the Doce river basin. [ABSTRACT FROM AUTHOR]