Qualidade de vida, terceira idade e atividades físicas

This article presents the result of an investigation on the representation of senior individuals regarding quality of life and the practice of physical activities. We have started from the concept of quality of life as all that related to the welfare of the individual. The research has a qualitative boarding and used questionnaires as instrument of data collection. The sample was constituted by men and women, pertaining the two different universes, totalizing 52 individuals. We have investigated which aspects (physical, affective, social, cultural and psychological) are considered in the concept of quality of life in the opinion of senior individuals, as well as their relation with the physical activities. The preferences of the practitioners of physical activities and the reasons for such practice were also researched.Este artigo apresenta o resultado de uma investigação sobre a representação dos indivíduos da Terceira Idade a respeito de qualidade de vida e a prática de atividades físicas. Partiu-se do conceito de qualidade de vida como tudo aquilo que diz respeito ao bem estar do indivíduo. A pesquisa teve uma abordagem qualitativa e utilizou questionários como instrumento de coleta de dados. A amostra foi constituída por homens e mulheres, pertencentes a dois universos diferentes, totalizando 52 indivíduos. Foram investigados quais aspectos (físicos, afetivos, sociais, culturais e psicológicos) se encontram presentes no conceito de qualidade de vida na visão dos indivíduos da Terceira Idade, bem como a sua relação com as atividades físicas. As preferências dos praticantes de atividades físicas e os motivos da prática também foram objetos de pesquisa

A possible tsunami deposit at the Cretaceous-Tertiary boundary in Pemambuco, northeastern Brazil.

Interdisciplinary and integrated investigations of a stratigraphic succession spanning the Cretaceous-Tertiary (K-T) boundary in Pemambuco (the Poty Quarry section, near Recife), northeastern Brazil, provides direct evidence for the hypothesis of an extraterrestrial bolide impact event. Discussions on the exact position of the K-T boundary point to na impact event in the earliest Danian. One particular bed at the base of the Maria Farinha Formation shows sedimentary characteristics and exotic (probably impact-derived) material which suggest the action of a tsunami wave. The distribution of iridium concentrations throughout the studied succession records a major peak of iridium (up to 69 times the background levels) at about 15-20 cm above the main tsunami bed

The Cretaceous-Tertiary boundary in the context of impact geology and sedimentary record : an analytical review of 10 years of research in Brazil.

The question of the Cretaceous-Tertiary (K-T) boundary is here considered in a more wide sense, considering its importance for Impact Geology. The first two sub-principles of uniformitarianism can be seen as similar to the actualist principle and can be both merged with catastrophism as a renewed view of geosciences [as two principles in dialectical opposition for working with regime x rupture processes in Earth Sciences]. Examples from Brazilian basins, especially Pernambuco-Paraiba (PE-PB) basin, are considered with their face value for the study of the K-T boundary. Most of their characteristics also give support to Impact Geology Theory. It is also considered the importance of the initial works on the Brazilian K-T sedimentary boundaries (in a Impact Geology context), which begun 10 years ago giving support to present time trends of researches. At present with the actual state of knowledge in Geosciences it is no longer possible to consider the Earth System as a closed one (Albertão 1991). It is obvious that Earth is an open system subjected to any sort of interactions with other corpses and fields within the Cosmos as many geological and biological evidences indicate everywhere

Modeling the deposition of turbidite systems with Cellular Automata numerical simulations: A case study in the Brazilian offshore

International audienceTurbidite reservoirs frequently consist of massive sandstones with excellent reservoir properties, but showing a heterogeneity which is difficult to characterize with only well and seismic data. The physical and numerical modeling of the depositional processes is then a way to predict the heterogeneity pattern and to assist the geological interpretation.Recently, Cellular Automata (CA) modeling was adapted to simulate turbidite flow deposits. In this study, CA modeling incorporates the main submarine physical processes involved in turbulent flows, such as water entrainment, erosion, deposition and particle fall-out. These processes are developed through CA simulations, in which the cells interact by exchanging energy and flow properties. In this work, the CA modeling was applied in real oilfields of the Campos Basin (offshore Brazil), in a case where the palaeotopography played a major role on trapping of turbidite sand deposits.The sensitivity tests performed on this case study highlighted that the parameters of flow concentration, composition of the substratum and the deposition model greatly impact the simulation results. The simulation results also realistically reproduced sedimentation patterns, such as successive filling of contiguous sub-basins, increasing flow velocities in confined settings, run-up effects with lateral deposition of fines and concentration of coarser sediments in topographic lows.An important characteristic of the studied turbidite reservoirs is the presence of multiple-stacked depositional cycles. For this reason, CA code was adapted to allow the simulation of multiple flow events and, by this way, to reproduce stacked turbidite cycles. The reservoir distribution and the thicknesses of the geological model fit very well with the results of CA simulations for multiple flow events. A blind test performed thanks to the drilling of a new well in the study area also confirmed the forecast capacity of the CA modeling for both sediment distribution and thickness.The results of the simulations are consistent with the geological model of the study area, and predict reservoir distribution in locations away from the wells. These results also point to the potential of such numerical techniques in improving the prediction of the turbidite reservoir extension, especially in the case where palaeotopography controlled the turbidite sedimentation