Comportamiento antropométrico de los jugadores de cuadro del equipo de béisbol primera categoría de la provincia de Holguí / First-Rate Baseball Team Anthropometric Behavior. Holguín Province

La antropometría en las diferentes esferas del deporte es uno de los métodos más utilizados como criterio para la orientación sobre el entrenamiento y sus cargas físicas. En el béisbol esto es de gran importancia y debe relacionarse con las distintas posiciones individuales de los jugadores. Demostrar la factibilidad antropométrica para el control del entrenamiento deportivo en diferentes etapas de preparación del equipo de béisbol de la primera categoría de la provincia de Holguín...(AU)

The anthropometry is one of the most useful methods for training and physical loads. It should be related with the players´ positions...(AU)

Surface adsorption, intracellular accumulation and compartmentalization of Pb(II) in batch-operated lagoons with Salvinia minima as affected by environmental conditions, EDTA and nutrients.

The effects of environmental factors and nutrients on the various possible removal mechanisms (surface adsorption, intracellular accumulation and precipitation to sediments) and partitioning of lead among various compartments (plant biomass, water column and sediments) in Salvinia minima batch-operated lagoons, were evaluated. Surface adsorption was found to be the predominant mechanism for Pb(II) removal under all environmental conditions tested in the absence of nutrients (an average of 54.3%) and in a nutrient medium (modified Hutner 1/10 medium) free of EDTA and phosphates (54.41%) at "high" initial Pb(II) concentrations (in the range of 10.3+/-0.13 to 15.2+/-0.05 mg/L). Under these conditions, the bioconcentration factors (BCFs) were 2,431+/-276 and 2,065+/-35, respectively. Lead removal was very rapid during the first 4 h and reached 70% in the absence of nutrients at the "medium" light intensity and temperature (LIT) tested, 88% in nutrient medium free of EDTA and supplemented with synthetic wastewater (at the "lowest" LIT tested), and 85% in medium free of EDTA and phosphates. It was concluded that the mechanisms of lead removal by S. minima, and the compartmentalization of this metal in the microcosm of batch-operated lagoons, are primarily a function of the presence of certain nutrients and chelants, with secondary dependence on environmental conditions. In addition, the results indicate that the percentage of lead removed is only a gross parameter and that the complementary use of BCF and compartmentalization analysis is required to gain a full insight into the metal removal process.