A total of 297 bacterial strains were isolated from five Antarctic sponge species and tested by agarose gel electrophoresis for the presence of plasmid molecules. At least one kind of plasmid was carried by 69 isolates (about 23%). The disc…

The aim of this study was to gain some fundamental knowledge on the thermal degradation pathways of poly(N-vinyl pyrrolidone) using Thermogravimetry coupled with Fourier Transform Infrared Spectroscopy (TG–FTIR) in addition to IR and 1H NMR spectroscopic studies of the partially…

Esta investigación enfatiza la importancia del conocimiento matemático del profesorado para garantizar una educación matemática continua. Desde esta perspectiva de continuidad se explora el papel del docente de matemáticas en la transición de primaria a secundaria, un contexto especialmente adecuado…

This essay argues that intellectual historians have overlooked the significance of the return of Euclid’s geometric thought to early-modern Europe. Looking at the period between 1400 and 1800, this essay shows how geometric thought not only penetrated into fundamental areas…

Total internal reflection microscopy (TIRM) measures the position of a Brownian particle above an interface by using its scattering of an evanescent wave. From the knowledge of the trajectory it is possible to reconstruct the interaction potential between the Brownian…

Good command of anatomy is a basic requirement for studying and practicing clinical disciplines. A common difficulty that faces many medical and dental students (at least this was the case with the author) is how to keep their knowledge of…

Esta tesis presenta una particularización de la Gestión del Conocimiento Matemático al caso de la Topología Algebraica.
La Gestión del Conocimiento Matemático es una rama de las Ciencias de la Computación cuyo principal objetivo consiste en desarrollar asistentes para…

Nowadays large systems are viewed in terms of the services that they offer and the entities that interact to provide or consume these services. Open multi-agent systems, where agents can enter or leave the system, interact and dynamically form groups…

Mexico counts among the five countries with the highest biodiversity in the world. In the Yucatán Peninsula, there are aquatic ecosystems with a very special microbial diversity. These ecosystems are essential for the ecological equilibrium of the region, and are…

The aim of the article is to examine the relationship between organizational learning and strategic planning actions in SMEs. The hypothesis is that those firms that think strategic planning as an organizational learning process may encourage the design of 'long-term…