Abstract We present this manuscript as a methodological approach and general guidelines for geochemical mapping and background/baseline projects for environmental assessment in tropical areas. A case study was carried out in the Itacaiúnas River watershed (IRW), Eastern Amazon, to fill in a gap in knowledge on the distribution of chemical elements, particularly those potentially toxic, in the near-surface environment of the area. The high-impact results of this research project revealed the need for similar scientific investigation across the globe with the implementation of a systematic methodology. The study shows, for example, the importance of well-planned field activities, multi-medium sampling, analytical methods, laboratory procedures, database construction, and general aspects of data processing and statistical treatment. The importance of this contribution is that it can be used as a reference in support of geospatial analysis in research within the scope of geochemical mapping and background-baseline projects. The database is accessible through a web-based geographic information system front-end; a Geochemical Atlas of the IRW will be available as soon as possible. backgroundbaseline background baseline areas IRW, , (IRW) Amazon elements toxic nearsurface near surface area highimpact high impact methodology shows example wellplanned well planned activities multimedium multi medium sampling methods procedures construction treatment webbased web based frontend front end front-end possible (IRW

Abstract Myocardial bypass (MB) is known to have scientific relevance and is present in several studies with great statistical significance regarding its clinical manifestations and complications. There are still questions about MB in its relationship with heart disease and repercussion in life-threatening conditions. We present a case report of a MB in the left anterior descending coronary artery, whose objective is to identify this rare congenital anomaly and to highlight the patient's clinical outcome in order to elicit greater contributions about the presence of this variant in the emergency room, its diagnosis by angiography and therapeutic management.

Resumo A prática de atividades físicas no lazer representa um comportamento que auxilia na obtenção de potenciais beneficios para a saúde. Os objetivos deste estudo foram i) comparar as prevalências de universitários ativos no lazer entre três inquéritos transvesais; ii) analisar os fatores associados à prática de atividade física no lazer, em cada inquérito. Foram realizados três inquéritos nos anos de 2010, 2012 e 2014. O desfecho deste estudo foram os ativos no lazer (≥1 dia por semana). As variáveis exploratórias foram as sociodemográficas e de vínculo com a universidade. As prevalências entre os inquéritos foram comparadas pelo teste qui-quadrado para tendência e a associação foi estimada pelas Razões de Prevalências. A participação foi de 1.084, 1.085 e 1.041 universitários nos anos de 2010, 2012 e 2014, respectivamente. As prevalências de ativos no lazer foram de aproximadamente 50% nos três inquéritos. As mulheres foram menos ativas no lazer nos três inquéritos. Os universitários vinculados aos cursos da Biomedicina, Geografia – bacharelado, Educação Física – licenciatura e Geografia – licenciatura foram associados com maiores razões de prevalências de prática de atividades físicas no lazer. Os universitários com menores razões de prevalências de prática de atividades físicas no lazer foram provenientes dos cursos de Química – licenciatura, Ciência da computação, Pedagogia e Letras (sem habilitação). Conclui-se que houve a estabilização da prevalência de universitários ativos no lazer ao longo do período de análise e que as mulheres apresentaram menores prevalências de prática de atividades físicas no lazer nos três inquéritos.

Abstract The practice of leisure physical activity represents a behavior that must be monitored in different population groups. The objectives of this study were i) to compare the prevalence of leisure-time physical activity in university students along the survey years in three separate years; ii) to analyze the factors associated with practice of leisure-time physical activity in each survey. Three surveys in a college institution in northeastern Brazil in 2010, 2012 and 2014 were carried out. The dependent variable was practice of leisure-time physical activity. Exploratory variables were sociodemographic factors and link with the university. The prevalence was compared using the chi-square test for linear trend and association for Prevalence Ratio. Participation was of 1,084, 1,085 and 1,041 college students in 2010, 2012 and 2014, respectively. The prevalence of leisure-time physical activity was approximately 50% in the three surveys. Women were less active in leisure time on the three surveys. In each survey, associations were different in relation the courses, and Chemistry – teacher training, Computer Science, Pedagogy – teacher training and Linguistics (no specialization) students showed lower levels of leisure-time physical activity and Biomedicine, Geography – Bachelor, Physical Education – teacher training and Geography – teacher training students were more active in leisure time. It was concluded that there was a stabilization of the prevalence of active leisure over time and that women showed lower prevalence of leisure-time physical activity in the three surveys.

A aplicação dos métodos gravimétrico, eletroresistivimétrico e da polarização induzida (IP), na interpretação geofísico-geológica de terrenos cársticos, tem se revelado útil, considerando a possibilidade de identificação e dimensionamento de feições de dissolução tais como fraturas, vazios ou cavidades, preenchidas ou não por água ou sedimentos, sob a superfície do terreno. As modelagens bidimensional e tridimensional destes corpos possibilitam a avaliação indireta do contexto estrutural-geotécnico do terreno em estudo. O objetivo do trabalho consistiu na identificação e avaliação das formas e dimensões destas feições em uma área que recentemente sofreu colapso de terreno, comprometendo edificações existentes na região. Qualitativamente, os resultados indicaram a existência de tratos onde potencialmente existe percolação de água, ou solo muito saturado, segundo a análise da correlação das respostas dos métodos empregados. Do ponto de vista quantitativo, métodos de inversão de dados gravimétricos e resistivimétricos-IP permitiram estimar a forma e a profundidade dos corpos causadores das anomalias. Finalmente, os resultados mostraram que os métodos empregados podem ser úteis na investigação de feições de dissolução, destacando regiões frágeis que podem comprometer a implantação de estruturas físicas na superfície.

The application of the gravity, resistivity and induced polarization (IP) methods on the geophysical interpretation in karst terrains is a useful tool, considering its capability in identifying and dimensioning existing dissolution features such as fractures, voids or cavities, filled or not by water or sediment in the subsurface. The bi-dimensional and three-dimensional modeling of these bodies makes possible an indirect evaluation of the geotechnical-structural context of the terrain under study. The aim of this work consisted on the identification of these features and the evaluation of their shape and dimensions over an area that suffered ground collapses, compromising buildings in this region. Qualitatively, the results indicated the existence of regions where there is water flow or very saturated soil, following the analysis of the correlation among the responses of the employed methods. In a quantitative point of view, gravity and resistivity-IP inversion methods were used. These methods allowed the estimation of the shape and the depth of the anomalies causative bodies. Finally, the results showed that the employed methods can be useful in the investigation of karst features, pointing out fragile regions which can compromise the implantation of physical structures over the surface.