ABSTRACT The operation of stepped spillways is limited by a range of discharges due to the risk of occurrence of the cavitation phenomenon and erosion on its steps.Since there is a demand for spillways with the possibility of overflow of greater discharges, the designs seek to increase the air concentration of the flow, which can occur through the
Abstract Background The lumen of the endoplasmic reticulum (ER) acts as a cellular Ca2+ store and a site for oxidative protein folding, which is controlled by the reduced glutathione (GSH) and glutathione-disulfide (GSSG) redox pair.Although depletion of luminal Ca2+ from the ER provokes a rapid and reversible shift towards a more reducing poise in
We consider a multiuser downlink transmission from a base station with multiple antennas (MIMO) to mobile terminals (users) with a single antenna, using orthogonal frequency division multiplexing (OFDM).Channel conditions are reported by a feedback from users with limited rate, and the base station schedules transmissions and beamforms signals to u
INTRODUCTION: The loss of parenchymal brain volume per normative age comparison is a distinctive feature of brain atrophy.While the condition is the most prevalent to elderly, it has also been observed in pediatric ages.Various causes such as trauma, infection, and malnutrition have been reported to trigger the loss of brain tissues volume.Despite