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…

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…

In this paper, a restricted domain question answering (QA) system is described. The design architecture of this QA system and the features that allow the adaptation of the QA system to the medical domain are also presented. The advantages of…

Sierra Nevada es uno de los centros más importantes de diversidad ecológica y endemicidad de Europa, y constituye por ello un observatorio excepcional para estudiar el funcionamiento de sistemas y procesos naturales en un contexto de cambio global. Con vocación…

Detrás de la actual crisis ambiental está nuestra limitada comprensión de los procesos ecológicos y sociales que operan a escalas espacio-temporales amplias. Esta falta de conocimiento ha desencadenado fallos en los esquemas de manejo y utilización de los servicios y…

The characteristics of current society and the interest about citizenship education in the context of lifelong learning are essential to a study that aims to describe and understand the development of social and civic competence in the educational field. A…

Diagnosis is an important process in patient care. A suitable diagnosis helps a physician determine a precise treatment. Physicians also have a tendency to seek collaboration from other colleagues and expert systems for better confidence in their decision. The sources…

Los bosques secos neotropicales son reconocidos como uno de los ecosistemas más amenazados del mundo. La acelerada pérdida de cobertura vegetal de estos bosques ha ocasionado que, en la actualidad, se encuentren restringidos a una pequeña fracción de su área…

This work presents the main theories and models formulated with the purpose of offering a global overview on the acquisition of knowledge and skills involved in the initial development of expert competence. Setting from this background, we developed an empirical…

We develop a theory to explain the transition from stagnation to modern growth. We focus on the forces that shaped the evolution of total factor productivity in agriculture and manufacturing across history. More specifically, we build a multisector model of…