Abstract: Permanent magnets disposed on the outer circumferential surface of a yoke are reliably and efficiently covered with a cylindrical member of fiber-reinforced resin. A covering apparatus has a holding jig for being forced into an insertion end of the cylindrical member and guiding a rotor when the rotor is inserted into the cylindrical member, and a movable jig for being forced with the holding jig into the cylindrical member, engaging a leading end of the rotor, and being inserted together with the rotor into the cylindrical member. The holding jig and the movable jig have teeth for forcibly expanding the cylindrical member radially outwardly to a diameter greater than the diameter of the rotor.

Abstract: By using a hysteresis amplifier for driving an electromagnet, a highly accurate electromagnetic bearing may be produced without the need for independent position detectors to maintain the levitated position of a rotor constant. In one embodiment, the electromagnetic bearing includes multiple electromagnets for levitating a rotor in a predetermined position. Multiple hysteresis amplifiers each supply a switching signal for driving each of the electromagnets. The switching frequency of the switching signals changes in accordance with the inductance of the electromagnets, which varies in accordance with the relative position of the electromagnets. A phase comparator detects the phase difference between the switching waveforms of each hysteresis amplifier. A loop filter supplies a target current value converted from an output of the phase comparator to the hysteresis amplifiers.

Abstract: The gene responsible for the capability of E. coli to assimilate acetic acid has been isolated and characterized. Transforming bacteria with this gene enhances the bacteria's ability to assimilate acetic acid and results in a bacteria having improved growth characteristics, particularly on culture media containing glucose as a nutrient.

Abstract: Gene expression in a cell can be regulated or inhibited by incorporating into or associating with the genetic material of the cell a non-native nucleic acid sequence which is transcribed to produce an mRNA which is complementary to and capable of binding to the mRNA produced by the genetic material of said cell.

Abstract: A controlled type magnetic bearing device which has at least two radius direction magnetic bearings, characterized in that the radius direction magnetic bearing control device has either or both of a static unbalance compensator for suppressing a whirling caused by static unbalance and a dynamic unbalance compensator for suppressing a whirling caused by dynamic unbalance.

Abstract: An electromagnetic bearing apparatus having five degrees of freedom includes two radial magnetic bearings. Each of the radial bearings consists of two pairs of electromagnets. The electromagnets of one pair are arranged opposite one another around a rotating shaft, and the other pair is arranged in the same perpendicular plane as the preceding pair. The pairs of electromagnets in the two radial bearings are respectively controlled to stabilize the rotating shaft to obtain automatic regulation, in which deviation of the shaft in a radial sense is compensated according to the component of shaft radial deviation and deviating velocity and the gyro-effect which will be caused by the perpendicular compensating torque to compensate the future rotation in the perpendicular component.