A regenerative fluid dynamic machine, typically a blower or compressor, includes an impeller with fixedly attached blades which may be radial or curved in a general convex fashion facing forward in the direction of turning. The cam is mounted on the table leg by a bracket. The radio signals resonate within the two slots and the stacked-patches, and are then emitted from the stacked-patches in a direction normal to the stacked-patches. The method includes sampling in the bottom of the recovery column of at least one bottom reboiling stream, and establishing a heat exchange relationship of the re-boiling stream with at least one portion of the initial natural gas orand with the recycling stream, the bottom reboiling being ensured by the calories taken from the initial natural gas stream orand from the recycling stream .