La aplicación de técnicas de biología molecular al estudio de la microbiología del suelo ha representado un gran avance en el conocimiento de
estos ecosistemas. El reconocimiento de la presencia de una gran diversidad de microorganismos en suelos, que resultaban…

Issues related to maternal mortality have generated a lot of empirical and theoretical information. However, despite the amount of work published on the topic, maternal mortality continues to occur at high rates and solutions to the problem are still not…

This paper describes an information retrieval system called NLA which analyses natural language queries. The languages used here are: English, Italian & French. The query analysis is performed in two stages: the comprehension stage, where the user's request is translated…

En este trabajo pretendo mostrar un episodio a mi parecer importante y poco atendido en relación con el cambio definitivo que se produce a finales de la Edad Media de los modos orales de comunicación a la irreversible consolidación de…

There are different approaches used by mathematics teacher educators to help pre-service primary teachers develop the useful skills and knowledge required to teach mathematics. One of these approaches is concerned to learning to notice relevant aspects in mathematics teaching. But…

In this paper a new conception of science is defined, which opposes apocalyptic points of view —science is a perverse knowledge leading to world destruction—, to irenist points of view —science is an armonic knowledge, as a puzzle where we…

Heterogeneous azeotropic distillation is a widely used technique to separate binary azeotropic mixtures into their components. One of its most important applications is the dehydration of ethanol, which is blended with gasoline to obtain automobile fuel. Among all the compounds…

Presentación de la aplicación de las nuevas tecnologías al análisis y la traducción de los clásicos catalanes., Aquesta investigació s’emmarca en el context del projecte de recerca per a la “Promoció exterior de la llengua, la literatura i la cultura…

Purpose – Information and communication technologies have became pervasive in people’s lives and in this changing world education cannot remain anchored in old-fashioned models which ignore the evolution through which society is going. This paper seeks to present the gamble…

Design and optimization of distillation columns for ethanol dehydration, using a hydrocarbon as entrainer, implies a good knowledge of vapor-liquid (VLE), liquid-liquid (LLE) and vapor-liquid-liquid equilibrium (VLLE). Chemical process simulation programs always require the use of a thermodynamic model that…