Presentación Eutopía N°6

Presentación CITA 2009

This editorial is an introduction of the special issue composed with the best papers in e-learning of CITA2009 (Congreso Iberoamericano de Telemática). This congress was organized in Gijón/Xixón, Asturies, España, in May of 2009. The two selected papers are related with different matters of elearning, such as learning objects and system architecture. In this editorial we introduce CITA 2009 and...

Presentación De La Asignatura

Dual Fluorescence from N6,N6-Dimethyladenosine

The adenosine derivative N6,N6-dimethyladenosine (DMA) shows dual fluorescence in solvents of different polarity. In addition to the “normal” fluorescence at 330 nm, another band is observed at 500 nm. The long wavelength emission dominates in aprotic solvents but is dynamically quenched by protic solvents. Steady-state and lifetime measurements show that the emissions originate from two excite...

Modelado de aspectos de navegación y presentación en aplicaciones hipermediales

Este art́ıculo presenta OO-HMethod, una propuesta metodológica que, utilizando una aproximación OO, captura la semántica necesaria para el modelado eficiente de Interfaces de Usuario en web, y extiende por tanto los métodos existentes de modelado conceptual de aplicaciones. OOHMethod recoge las dimensiones de navegación y presentación caracteŕısticas de este tipo de aplicaciones mediante dos nue...

PMR study of N6, N6-dimethyladenosine conformations under high pressure.

High hydrostatic pressure affects in various ways the reactivity and the stability of biogenic macromolecules [ 11. Pressures of several hundred bars reduce or increase enzymic activity [2-41. Proteins are usually irreversibly denaturated by pressures in excess of 1 kbar. On the other hand, calf thymus DNA is stabilized by increased pressure [5]. In general, an increase in pressure shifts an eq...