We discuss the hypothesis that, in addition to the known critical point in water (below which two fluid phases — a lower-density gas and a higher-density liquid — coexist), there exists a “second” critical point at low temperatures (below which two liquid phases — a higher-density...

A calculation based on a multiple scattering model is presented in order to obtain the absorption of aggregated granular metals. The model is based on a T-matrix formalism in which the scattering units are clusters of nearest-neighbor metallic particles and the behavior of the scattering units...

La relación entre los principales factores productivos de una economía es, junto con sus niveles de dotación, uno de los elementos determinantes del crecimiento económico. Actualmente existen todavía escasos trabajos empíricos que hayan estudiado la forma en que estos factores se...

Solar thermal electricity is a type of renewable energy technology of special interest for Andalusia (southern Spain) because of the large number of annual sunshine hours. This paper estimates the impact on productive activities of increasing the production capacity of the installed solar...