Search results for "AMPA"
showing 10 items of 1024 documents
Financement et moralisation de la vie politique
2018
International audience
A Model for Assessing the Magnitude and Distribution of Sheath Currents in Medium and High-Voltage Cable Lines
2020
In this article, the authors discuss a simulation model to study the effect of cross-bonding of metallic sheaths, and/or nonmagnetic armors, of single-core medium- and high-voltage cables in the same circuit. In single-core cables, the resistive losses due to the induced circulating currents in cable sheaths or armors cause an increase of the cable temperature, which therefore reduces its ampacity. This is a serious issue affecting the distribution and transmission lines. In addition, the risk of electric shock due to induced voltages may be present if a person is in contact with the armor/sheath at its unbounded end. For these reasons, special bonding techniques of metal sheaths are employ…
Hippocampal electrical stimulation disrupts associative learning when targeted at dentate spikes
2017
Hippocampal electrophysiological oscillations, namely theta and ripples, have been implicated in encoding and consolidation of new memories, respectively. According to existing literature, hippocampal dentate spikes are prominent, short‐duration (<30 ms), large‐amplitude (∼2–4 mV) fluctuations in hilar local‐field potentials that take place during awake immobility and sleep. Interestingly, previous studies indicate that during dentate spikes dentate gyrus granule cells increase their firing while firing of CA1 pyramidal cells are suppressed, thus resulting in momentary uncoupling of the two hippocampal subregions. To date, the behavioural significance of dentate spikes is unknown. Here, to …
IMPRESSIONI IN SICILIA
2014
“Impressioni in Sicilia” è la storia di una piccola azienda di design tessile che ha operato a Palermo dal 1974 fino al 1994. Proprietaria dell’impresa è Regine Hildebrandt, una svizzera trapiantata in Sicilia. La nascita di questo laboratorio s’inserisce in quel filone di esperienze finalizzate a incentivare il processo che vede l’incontro tra la cultura del progetto e la produzione artigianale, spesso legata alle tradizioni e alle risorse di alcuni territori. Gli oggetti progettati e realizzati da Regine hanno un valore durevole per la qualità dei disegni e dei materiali ma soprattutto, perché il suo progetto di ricerca è destinato all’identificazione e alla proposizione di “tratti cultur…
Materiales y evaluación del nivel de alfabetización para el reconocimiento de bots sociales en contextos de desinformación política
2020
espanolEl ecosistema de medios esta en constante cambio, transformandose a un ritmo que las instituciones educativas no pueden seguir. En esta transformacion mediatica se ha introducido la inteligencia artificial (IA), adaptada a las redes sociales con diversos fines, tambien politicos. Este trabajo se centra en la IA en formato bot como herramienta automatizada para publicar contenido en Twitter y en las competencias necesarias para identificarlos. Los bots buscan imitar el comportamiento humano para crear un clima de opi-nion concreto, participar en conversaciones politicas e interaccionar con cuentas reales para boicotearlas o aumentar su relevancia. Con el objetivo de conocer el nivel d…
Dignità umana e diffamazione a mezzo stampa
2010
Examinations of Bilateral Epileptiform Activities in Hippocampal Slices Obtained From Young Mice
2021
Bilateral interconnections through the hippocampal commissure play important roles in synchronizing or spreading hippocampal seizure activities. Intact hippocampi or bilateral hippocampal slices have been isolated from neonatal or immature rats (6–7 or 12–21 days old, respectively) and the mechanisms underlying the bilateral synchrony of hippocampal epileptiform activities have been investigated. However, the feasibility of examining bilateral epileptiform activities of more developed hippocampal circuitryin vitroremains to be explored. For this, we prepared bilateral hippocampal slices from C57 black mice, a strain commonly used in neuroscience and for genetic/molecular modifications. Youn…
Hieracium barrelieri, a new hawkweed species from S Italy, with notes on Tenore’s Hieracium murorum var. barrelieri (Asteraceae)
2015
A new species from Montevergine in Campania, Hieracium barrelieri, is described in detail. It is closest to H. acanthodontoides of H. sect. Acanthodontoidea. H. murorum var. barrelieri, an obsolete taxon described by Tenore, is also discussed, as it was partly based on the same population.
About the Influences of Some Major Biotic Drivers on the Population Dynamics in Host-parasite Systems: Interpretative Lessons from an Extended Nichol…
2020
Population dynamics within host-parasite systems in insects is governed by a series of factors, both endogenous and exogenous. Among them, five factors may be considered as major drivers: the respective inherent rates of increase of the host and of the parasite, the level of resource available to the host, the respective immigration rates of the host and of the parasite. While only the first two (the inherent rates of increase of host and parasite) are considered in the original Nicholson and Bailey model, an extended version of the model includes also the other three parameters, thus providing a broader (although still schematic) approach to the host-parasite population dynamics. A brief a…
Hippocampal Sharp Waves: A Physiological Correlate of LTP?
1988
The irregularly occurring large amplitude hippocampal sharp waves (SPWs) are correlated with synchronous population bursts of CA1-CA3 and subicular pyramidal cells, dentate granule cells and interneurons in all hippocampal fields. We suggest that the SPW-associated neuronal burst is the best candidate for a physiological basis of long-term potentiation (LTP).