Comparative study of job satisfaction in workers with a degree in Physical Activity and Sports Science

Job satisfaction is the favourable or unfavourable subjective feeling through which workers perceive their job. Numerous studies show the significant relationship between job satisfaction, motivation, performance and the quality of services. Thereby, the success of a sports organization depends upon the internal client to a great extent. However, job satisfaction an important subjective emotional variable that has been poorly evaluated in the sports sector. The aim of this study was to compare five professional profiles with a degree in Physical Activity and Sports Science, through the Herzberg’s theory of job satisfaction. The sample consisted of 974 university graduates from the entire Spanish territory with a degree in Physical Activity and Sports Science who had a relevant position in this field (69.8% men; 30.2% women), of whom more than half were in the age groups of 26 to 30 years (33.8%) and 31 to 35 years (23.4%). Based on the findings of this study, there were differences in job satisfaction between workers of Physical Activity and Sports Science according to the professional scope (teaching, management, fitness, training/high performance and other scopes)

Numerical simulation of heat transfer in a pipe with non-homogeneous thermal boundary condition

Direct numerical simulations of heat transfer in a fully-developed turbulent pipe flow with circumferentially-varying thermal boundary conditions are reported. Three cases have been considered for friction Reynolds number in the range 180–360 and Prandtl number in the range 0.7–4. The temperature statistics under these heating conditions are characterized. Eddy diffusivities and turbulent Prandtl numbers for radial and circumferential directions are evaluated and compared to the values predicted by simple models. It is found that the usual assumptions made in these models provide reasonable predictions far from the wall and that corrections to the models are needed near the wall.O.F. and M.G.-V. were partially supported by Grant TRA2013-41103-P of the Spanish Ministry of Economy and Competitiveness. This grant includes FEDER funding

Comparative metabolomic study of transgenic versus conventional soybean using capillary electrophoresis–time-of-flight mass spectrometry

In this work, capillary electrophoresis–time-of-flight mass spectrometry (CE–TOF-MS) is proposed to identify and quantify the main metabolites found in transgenic soybean and its corresponding non-transgenic parental line both grown under identical conditions. The procedure includes optimization of metabolites extraction, separation by CE, on-line electrospray-TOF-MS analysis and data evaluation. A large number of extraction procedures and background electrolytes are tested in order to obtain a highly reproducible and sensitive analytical methodology. Using this approach, a large number of metabolites were tentatively identified based on the high mass accuracy provided by TOF-MS analyzer, together with the isotopic pattern and expected electrophoretic mobility of these compounds. In general, the same metabolites and in similar amounts were found in the conventional and transgenic variety. However, significant differences were also observed in some specific cases when the conventional variety was compared with its corresponding transgenic line. The selection of these metabolites as possible biomarkers of transgenic soybean is discussed, although a larger number of samples need to be analyzed in order to validate this point. It is concluded that metabolomic procedures based on CE-MS can open new perspectives in the study of transgenic foods in order to corroborate (or not) the equivalence with their conventional counterparts.Peer reviewe

Una subespecie nueva en el género Sideritis L. (Lamiaceae)

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The potential of local food, energy, and water production systems on urban rooftops considering consumption patterns and urban morphology

The external resource dependency of urban areas results in the externalization of environmental and socioeconomic impacts. Implementing food, energy and water production systems on urban rooftops (roof mosaics) can potentially help cities become more self-sufficient but depends on the city's urban morphology. We studied the supply potential and impacts of four roof mosaic scenarios for different urban forms in Cerdanyola, a 58 thousand-inhabitant town in the metropolitan area of Barcelona. We combined spatial analysis of potential rooftops, metabolism analysis, and social and environmental impacts. The municipality has an average rooftop/household potential of 31 m2 on which to implement any of the mosaic scenarios, with the highest potential in the single-family housing typology. The highest level of vegetable self-sufficiency was found in housing estates (32%), and the lowest in originary fabrics (28%). Regarding electricity and water self-sufficiency, the highest self-sufficiency level was found in the single-family housing typology (51% and 14%, respectively) and the lowest in housing estates (26% and 8%, respectively). Regarding impacts, the implementation of the electricity and rainwater harvesting systems depicts the most positive indicators in single-family housing areas. However, for housing estates and originary fabrics typologies, the best performance is shown to be in the implementation of rooftop farming systems