In recent years, it has become increasingly clear that space weather disturbances can be triggered by transient upstream mesoscale structures (TUMS), independently of the occurrence of large-scale solar wind (SW) structures, such as interplanetary coronal mass ejections and stream interaction regions.Different types of magnetospheric pulsations, tr
This study tries to define the notion of lean manufacturing as an engineering management strategy that can be used by Egyptian shipyards to assist them to compete in this global shipbuilding market.lean manufacturing uses tools Ear Muffs like just-in-time, one-piece flow, and takt time, to improve product cycle times and quality by getting rid of w
BackgroundHerpes zoster is more prevalent among the older adult due to the age-related immune decline, leading to significant pain and complications.Although vaccination effectively prevents viral infections, vaccine hesitancy remains a major barrier to achieving high vaccination rates.To address this, we conducted a qualitative survey using Vaccin
A novel wideband waveguide antenna with excellent performance is proposed, which is composed of a coaxial-waveguide transition and an open-ended rectangular waveguide loaded Course a pied - Accessoires - Manchettes with a pair of horizontal umbrella-shaped metallic brims.The brims perpendicular to two broad walls of the waveguide are constructed to