P. Novak, Consultant In his paper the author has made a very useful contribution to the subject of prediction of oxygen content downstream of spillways, particularly in the case of surface aeration. However, some of the analysis referring to previously published results of oxygen uptake at hydraulic structures is not always rigorous enough. 40. The equations quoted for Avery and Novak apply to ...

Before vision, retinal ganglion cells produce spontaneous waves of action potentials. A crucial question is whether this spontaneous activity is transmitted to lateral geniculate nucleus (LGN) neurons. Using a novel in vitro preparation, we report that LGN neurons receive periodic barrages of postsynaptic currents from the retina that drive them to fire bursts of action potentials. Groups of LG...

Les appellations de 152 pièces d’eau d’un bassin-versant du centre Burkina Faso ont été répertoriées par l’autorité en charge la mise œuvre gestion intégrée des ressources eau, dans l’objectif d’établir les bases d’une nomenclature réseau hydrographique. 125 ces portent un nom langue vernaculaire (en mòoré), dont le sens est indiqué français rapport technique qui synthétise résultats l’enquête....

Apical and tuft dendrites of pyramidal neurons support regenerative electrical potentials, giving rise to long-lasting (approximately hundreds of milliseconds) and strong (~50 mV from rest) depolarizations. Such plateau events rely on clustered glutamatergic input, can be mediated by calcium or by NMDA currents, and often generate somatic depolarizations that last for the time course of the den...