Abstract: A novel roller coaster comprising a spherical, rotating rider-enclosure, wherein the roller coaster is transported along or within a track configured to transport the coaster, while converting coaster kinetic energy from potential energy and back. The rider is subjected to accelerations resulting from the coaster's transport, among which are rotational accelerations resulting from the rider enclosure. In a preferred embodiment, the coaster comprises a transport mechanism, the transport mechanism engaging and following a track. The spherical enclosure further includes a gimbal arrangement having a gyroscope, the gimbal arrangement supported by the transport mechanism. The gimbal arrangement contains at least one seat carrying a rider, and the motion of the rider is determined by the gyroscope that is controlled by a computer within the coaster.

Abstract: Mutational inactivation of proteins involved in para-cresol production in certain milk products results in improved taste and odor. The undesirable para-cresol forms over time as a result of enzymes produced by the bacterium that produces gellan gum. Since the gellan is typically used in a relatively unpurified form, the enzymes are added to the milk along with the gellan. Inactivation of the enzymes is a genetic means of eliminating the enzymes without requiring any additional purification or processing.

Abstract: P. elodea mutants are produced which produce gellan gum broth which contains no detectable amount of poly-.beta.-hydroxy-butyrate (PHB).