The present invention relates to a method of chemically modifying a lithium-based oxide comprising at least one transition metal, which comprises, in succession:a step of bringing said oxide into contact with an aqueous solution comprising phosphate ions;a step of separating said oxide from the aqueous solution; anda step of drying said oxide. A query generated using a query builder application for execution against a database to produce query results. The topology of the virtual controls is adapted to environmental conditions. The method of utilizing the shroud involves securing the shroud to the prosthetic implant.