COVID-19 pandemic touch all part of world to the date more than fifteen millions of patients are infected by virus including about 1388926 deaths (European Centre for Disease Prevention and Control an agency of the European Union).Morocco has put in place strict containment measures to control the disease and prevent the saturation of health system
Abstract To research the magnetic field and mechanical characteristics of the permanent magnet T-Shirt governor, the static magnetic field of the sector permanent magnet is analyzed by the molecular current method in the permanent magnet governor.The magnetic flux distribution is acquired at any spatial position.Comparing the analytical value with
Excerpt: This invited essay considers how thinking about institutional differences can enhance the scholarship of teaching and learning.It does this by drawing on a recent piece of South African research which used data produced as part of a national process of auditing institutions for quality assurance purposes (Boughey, 2009; Boughey 2010; Bough
Aerobic granular sludge is attractive for high-rate biological wastewater treatment.Biomass wash-out conditions stimulate the formation of aerobic granules.Deteriorated performances in biomass settling and nutrient removal during start-up have however often been reported.The effect of wash-out dynamics was investigated on bacterial selection, bioma
Controlling the sex ratio is essential in finfish farming.A balanced sex ratio is usually good for broodstock management, since it enables to develop appropriate breeding schemes.However, in some species the production of monosex populations is desirable because the existence of sexual dimorphism, primarily in growth or first time of sexual maturat