The present invention is directed to an osmotic engine useful in an osmotic delivery system for delivery of a beneficial agent in a controlled manner over a preselected administration period. The second keyboard body is adjacent to the first keyboard body. The method comprises a plasma processing step of subjecting a material to high-frequency thermal plasma processing in a plasma gas atmosphere so as to yield the porous particle. The control unit 60 of the label printer 1 includes an image printing control unit 61 that prints an image on the first label part 56, and an attribute information printing control unit 62 that prints image attribute information on the second label part 57. The process utilizes a slurry conversion unit for heat efficiency purposes during the conversion of acetylene into ethylene. If the impact of header compression on performance is determined to be favorable, then an identifier for a reference header is returned.