Abstract: A mass-manufactured disc containing audio and non-audio data, the audio portion of which can be satisfactorily played by an audio-only player without playing the non-audio portion. The disc is mass-manufactured from a patterned glassmaster by either (1) generating suitable multisession-formatted data and subcode information and writing this data onto the glassmaster, or (2) reading data stored on a write-once multisession disc and writing this data directly onto the glassmaster.

Abstract: A mass-manufactured disc containing audio and non-audio data, the audio portion of which can be satisfactorily played by an audio-only player without playing the non-audio portion. The disc is mass-manufactured from a patterned glassmaster by either (1) generating suitable multisession-formatted data and subcode information and writing this data onto the glassmaster, or (2) reading data stored on a write-once multisession disc and writing this data directly onto the glassmaster.

Abstract: A process for the preparation of a spatial form, which has biological activity, of a protein from a biologically inactive spatial form is described and comprises the protein being dissolved with the addition of a denaturing agent and thus converted into the random coil form, and the solution being allowed to pass through a material which has molecular sieve properties and contains a liquid medium in which the protein can assume a spatial form which has biological activity, and this material having molecular sieve properties being selected so that the molecules of the denaturing agent can penetrate, but the protein molecules canot. It is possible by centrifugation, blowing or sucking out to remove the medium in the "external volume" of the molecular sieve and to increase the rate of passage of the solution through the molecular sieve.