THE ALPHA VARIANT (B.1.1.7) OF SARS-COV-2 FAILED TO BECOME DOMINANT IN MEXICO



Distributed FACTS for Power System Transient Stability Control

The high penetration of renewable energy sources, combined with a limited possibility to expand the transmission infrastructure, stretches the system stability in the case of faults.For this reason, operators are calling for additional control flexibility in the grid.In this paper, we propose the deployment of switchable reactors and capacitors dis

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Rare sponges from marine caves: discovery of Neophrissospongia nana nov. sp. (Demospongiae, Corallistidae) from Sardinia with an annotated checklist of Mediterranean lithistids

A new record of lithistid demosponges is reported from a western Sardinian karstic cave.The new specimen matches the trait of the genus Neophrissospongia (Corallistidae) for an ectosomal skeleton of radial dichotriaenes, a choanosomal skeleton as a network of dicranoclone desmas, and streptaster/amphiaster microscleres with short spiny rays bearing

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