The efficiency of a free-electron laser can be enhanced by the phase jump method.The method utilizes the phase-shifting chicanes in the drift sections between the undulator segments.By applying appropriate phase jumps, the microbunched electron beam can decelerate and radiate coherently beyond the initial saturation, enabling further energy transfe

Abstract Background The use of immersive technology in healthcare education is on the rise, yet its impact on learner engagement, knowledge retention, and specifically in areas like hand hygiene training, remains underexplored.The aim of this scoping review was to summarize the existing studies of immersive technology in hand hygiene training of he

In 2021, a novel NOAA-Saildrone project deployed five uncrewed Alligator surface vehicle Saildrones (SDs) to monitor regions of the Atlantic Ocean and Caribbean Sea frequented by tropical cyclones.One of the SDs, SD-1045, crossed Hurricane Sam (Category 4) on September 30, providing the first-ever surface-ocean videos of conditions in the core of a