We consider the effect of atomic hydrogen exposure to a system of two undoped sheets of graphene grown near a silica surface (the first adsorbed to the surface and the second freestanding near the surface). In the absence of atomic hydrogen the van der Waals force between the sheets is attractive at all separations causing the sheets to come closer together. However, with addition of atomic hyd...

A scanning electron microscopy study of organic sheets in serpulid tube mineral structures was carried out to discern their function, formation and evolution. The organic sheets may have some taxonomic value in distinguishing the two major clades of serpulids previously identified. The organic sheets in the mineral tube structure occur only in certain taxa belonging to clade A, but not all spec...

BACKGROUND Providing discharge instructions to emergency department (ED) patients is not a standard practice and there is wide disparity in its implementation. There is evidence that ED discharge instructions, especially a pre- formatted one, complements verbal instructions and improves patient communication and management. AIMS Our aim was to audit the practice of providing a discharge summa...