Viabilidad del caracol terrestre (Cantareus aspersus) durante la época de descanso

Variation morphologique de la spermathèque chez l’escargot terrestre Cantareus aspersus

Morphological variation of the spermatheca in the garden snail Cantareus aspersus. Spermathecal morphology is known to play an important role in postcopulatory sexual selection of many invertebrates. In helicid land snails, the spermatheca is subdivided into tubules, whose number is sometimes subject to a strong inter-individual variation. Significance of this variation for postcopulatory sexua...

Papel De Los Receptores De Glutamato Durante La Diferenciación Neuronal

L-glutamate (Glu) is the main excitatory neurotransmitter in the Central Nervous System (CNS). The glutamate receptors (GluRs) are distributed in all CNS regions and they have been classified in two big families. The first big family is formed by the ionotropic glutamate receptors (iGluRs) or ligand-gated ion channels, which allow selective crossing of ions through selective ion channels permea...

Ansiedad durante pruebas de evaluación académica: influencia de la cantidad de sueño y la agresividad

The situation of academic evaluation has often been studied in relation to emotional alterations such as anxiety, stress or even fear. Possibly, aggressiveness may be another variable present in these situations. Aggressiveness seems to be present in different teaching activities as well as in all levels of the educational context, showing even more clearly in students with academic difficultie...

Estimación del Coste de la Calidad del Software a través de la Simulación del Proceso de Desarrollo

Some of the main objectives of quality assurance practices are to detect and correct the errors that arise during the development of a software product, as well as to guarantee that the final product conforms to the client’s requirements. Quality initiatives suppose an added cost to the software development projects, cost that is totally justified but which, in most of the cases, is the first o...

Adaptation de la couche transport des systèmes de communication hybrides satellite/terrestre