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RESUMEN Objetivo Determinar cuál es el efecto que tiene la técnica de biofeedback de la respiración en la satisfacción laboral de los trabajadores de una industria joyera en Guadalajara, México. Materiales y Métodos La investigación fue un estudio cuasiexperimental pre y postest en grupos aleatorizados en tres fases: diagnóstico, intervención y evaluación. Para los resultados se utilizó el ANOVA, durante el año 2020. Resultados Los resultados muestran las diferencias significativas en el aumento de la motivación entre el grupo experimental y control en el postest, no así para la dimensión de satisfacción laboral y la dimensión de jerarquía. Conclusión La aplicación de la técnica del biofeedback de la respiración mostró solo ser eficiente en la dimensión de la motivación de la satisfacción laboral, aunque con un efecto bajo en el personal de una empresa joyera, por lo que es necesario continuar buscando herramientas que puedan aumentar la satisfacción laboral en todas sus dimensiones.
ABSTRACT Objective To determine the effect of the biofeedback technique of respiration on the job satisfaction of workers in the jewelry industry in Guadalajara, Mexico. Materials and Methods The research was a quasi-experimental pretest and posttest study in randomized groups divided in three phases: diagnosis, intervention, and evaluation. For the results, ANOVA was used, during the year 2020. Results The results show a significant difference in the increase in motivation between the experimental group and the control group in the post-test, however not for the dimension of job satisfaction or the dimension of hierarchy. Conclusions The application of the biofeedback technique of respiration only showed to be efficient in the motivation dimension of job satisfaction, although with a low effect on the personnel of a jewelry company. Therefore, it is necessary to continue looking for tools that can increase the job satisfaction in all its dimensions.
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Low concentrations of pharmaceuticals in the environment (ng/L to µg/L) are an environmental concern. We used the invertebrates, Hydra oligactis and Hydra viridissima, as freshwater models for primary toxicity testing to study effects of chronic low concentrations of pharmaceuticals in the environment. H. oligactis were exposed to three concentrations (0.1, 1.0 and 10 µg/L) of either fluoxetine, carbamazepine, or triclosan; H. viridissima were exposed to three concentrations (0.1, 1.0 and 10 µg/L) of triclosan. Ecologically relevant endpoints including morphology, budding rate, feeding behaviour, and regenerative capacity were examined during the 14 days exposure period. The interstitial:epithelial stem cell ratios was also examined in H. oligactis. There were no significant effects on the morphology, budding rate and feeding behaviour of the H. oligactis across all concentrations of fluoxetine, carbamazepine, and triclosan. However, regenerative capacity significantly decreased in comparison to the controls when H. oligactis was exposed to 10 µg/L of triclosan and fluoxetine, although there was no significant difference when exposed to carbamazepine. Neither fluoxetine nor carbamazepine treatment altered stem cell ratios. Exposure to triclosan at any concentration did not impact H. viridissima morphology, budding rate, regeneration or feeding behaviour. These results show there are limited effects in Hydra after exposure to chronic, low concentrations of fluoxetine, carbamazepine, and triclosan, except for regeneration in H. oligactis. These endpoints can be used effectively (and cost effectively) to study the effects of environmentally relevant concentrations of pharmaceuticals in Hydra species.
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Hydra , Animais , Carbamazepina , Água Doce , Testes de Toxicidade , TriclosanRESUMO
Amongst migratory species, it is common to find individuals from different populations or geographical origins sharing staging or wintering areas. Given their differing life histories, ecological theory would predict that the different groups of individuals should exhibit some level of niche segregation. This has rarely been investigated because of the difficulty in assigning migrating individuals to breeding areas. Here, we start by documenting a broad geographical gradient of hydrogen isotopes (δ 2H) in robin Erithacus rubecula feathers across Europe. We then use δ 2H, as well as wing-tip shape, as surrogates for broad migratory origin of birds wintering in Iberia, to investigate the ecological segregation of populations. Wintering robins of different sexes, ages and body sizes are known to segregate between habitats in Iberia. This has been attributed to the despotic exclusion of inferior competitors from the best patches by dominant individuals. We find no segregation between habitats in relation to δ 2H in feathers, or to wing-tip shape, which suggests that no major asymmetries in competitive ability exist between migrant robins of different origins. Trophic level (inferred from nitrogen isotopes in blood) correlated both with δ 2H in feathers and with wing-tip shape, showing that individuals from different geographic origins display a degree of ecological segregation in shared winter quarters. Isotopic mixing models indicate that wintering birds originating from more northerly populations consume more invertebrates. Our multi-scale study suggests that trophic-niche segregation may result from specializations (arising in the population-specific breeding areas) that are transported by the migrants into the shared wintering grounds.
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Migração Animal , Aves Canoras , Animais , Plumas/química , Isótopos de Nitrogênio , Estações do AnoRESUMO
Se presentan las tablas de vida para hombres, mujeres y ambos sexos, correspondientes a la población del estado de Jalisco, México para 1995. Los hombres alcanzaron 69.69 años, las mujeres 72.20 y ambos sexos 72.17. Se comentan las diferencias y la tendencia de expectativa de vida en el Estado
