Abstract: In an IPM rotor, a first core sheet has a first sheet hole forming a part of an accommodation hole. The first sheet hole has an edge portion having a flat spring portion which is bent by a magnet through insertion of the magnet into the accommodation hole. A pair of recesses forming a clearance with respect to the magnet are formed at both side portions of the flat spring portion of the edge portion of the first sheet hole. A size of the clearance is set based on a relationship between a magnitude of a pressing force of the flat spring portion on the magnet and variation in pressing force.

Abstract: The present invention discloses reproduction pitch change technology incorporated in audio reproduction system capable of changing reproduction pitch or reproduction time of reproduced sound without causing enlargement of the configuration of the system and complicatedness of its processing and damaging the quality of the reproduced sound. When inputted audio data is converted inversely from frequency region to time region the spectrum of the inputted audio data is shifted on the frequency axis based on a reproduction pitch changing amount and a band width of the audio data after the shift is matched to the band width of the inputted audio data before the shift to obtain a reproduction frequency of the time-series audio data to be outputted.

Abstract: An improved slow release oxamide fertilizer comprising an oxamide powder bonded by polyvinyl alcohol in a ratio of 0.2-10 weight parts of polyvinyl alcohol per 100 weight parts of oxamide is disclosed. The oxamide fertilizer is in the shape of spherical particles having an average minor diameter of 2 to 5 mm, and not less than 70% of total numbers of the particles have shapes in a ratio of major diameter to minor diameter of 1 to 1.3. The oxamide fertilizer has a respose angle not greater than 39.degree..