Search results for "Ciencias Biológicas"
showing 4 items of 794 documents
Propuestas para la regeneración de la vegetación del humedal de los Ojos de Monreal del Campo (Teruel).
2003
Peer reviewed
Global diversity and geography of soil fungi
2014
Fungi play integral roles in soil nutrient cycling, but the determinants of fungal diversity and biogeographic patterns of key functional groups remain poorly understood. By using pyrosequencing data from hundreds of globally distributed soil samples, we demonstrated fungal diversity that expands upon the taxonomic and molecular diversity recorded so far. Except for ectomycorrhizal symbionts, fungal functional group richness was unrelated to plant diversity and plant-to-fungus richness ratio declined exponentially towards the poles. Climatic factors, followed by edaphic and spatial variables, constituted the best predictors of fungal richness and community composition at the global scale. F…
Rúbricas para evaluar la influencia de las TIC en el proceso de enseñanza/aprendizaje : estudio de caso en Educación Secundaria
2019
espanolUtilizar las Tecnologias de la Informacion y de la Comunicacion (TIC) en las aulas de Educacion Secundaria contribuira a un aprendizaje mas efectivo para el adolescente en materias cientifico-tecnicas; asi como, la utilizacion de rubricas para evaluar su ensenanza esta considerado un instrumento eficaz para cuantificar dicho proceso. En este sentido, la experiencia de investigacion-accion que aqui se presenta fue desarrollada en un instituto de Educacion Secundaria de Valencia, en la materia de Biologia-Geologia. El objetivo de esta experiencia se centro en valorar la influencia de las TIC en el proceso de ensenanza/aprendizaje de esta asignatura, mediante rubricas de evaluacion. Se …
Factors affecting the production of putrescine from agmatine by Lactobacillus hilgardii X1B isolated from wine
2008
Aims: To elucidate and characterize the metabolic putrescine synthesis pathway from agmatine by Lactobacillus hilgardii X1B. Methods and Results: The putrescine formation from agmatine by resting cells (the normal physiological state in wine) of lactic acid bacteria isolated from wine has been determined for the first time. Agmatine deiminase and N-carbamoylputrescine hydrolase enzymes, determined by HPLC and LC-Ion Trap Mass Spectrometry, carried out the putrescine synthesis from agmatine. The influence of pH, temperature, organic acids, amino acids, sugars and ethanol on the putrescine formation in wine was determined. Conclusions: Resting cells of Lact. hilgardii X 1B produce putrescine …