Abstract: Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO·7Al2O3 having a specific surface area of 5 m2/g or above; a second step for supporting a ruthenium compound on the 12CaO·7Al2O3; and a third step for performing a reduction process on the 12CaO·7Al2O3 supporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.

Abstract: A motor controller is configured or programmed to include a rotational speed acquirer to acquire an actual rotational speed of a motor including a rotor that includes permanent magnets, a commanded voltage calculator to calculate a commanded voltage to be supplied to the motor based on a difference between the actual rotational speed and a target rotational speed, and a feed-forward compensator to compensate the commanded voltage by an amount equal to an induced voltage in the motor based on the target rotational speed. The feed-forward compensator includes a compensation value calculator to calculate a feed-forward compensation value on which smoothing processing has been performed and an adder to add the feed-forward compensation value to the commanded voltage.

Abstract: A motor controller is configured or programmed to include a rotational speed acquirer to acquire an actual rotational speed of a motor including a rotor that incudes permanent magnets, a commanded voltage calculator to calculate a commanded voltage to be supplied to the motor based on a difference between the actual rotational speed and a target rotational speed, and a feed-forward compensator to compensate the commanded voltage by an amount equal to an induced voltage in the motor based on the target rotational speed. The feed-forward compensator includes a compensation value calculator to calculate a feed-forward compensation value on which smoothing processing has been performed and an adder to add the feed-forward compensation value to the commanded voltage.

Abstract: An automatic cigarette extinguishing apparatus includes a tank portion located at an arbitrary position inside tobacco and made of a material having a melting point lower than a combustion temperature of the tobacco, and an extinguishing agent stored in the tank portion. The tank portion is arranged to supply the extinguishing agent inside the tobacco upon combustion of the tobacco.

Abstract: A lenticular lens screen is provided with first and second lenticular lens arrangements on light incident and outgoing sides which include unit lenses (i.e. lenticles) respectively. Each lenticle on the light outgoing side has a section of substantially semicircular or near arcuate shape having a radius smaller than a radius of a section of substantially semicircular or near arcuate shape of the lenticle on the light incident side. The lenticle on the light outgoing side is provided with an apex positioned inside the intersecting point of lights projected through both end portions of the lenticle on the light incident side.