Abstract: To provide a novel water-addition type, chemical exothermic agent. An exothermic agent comprising, per mass thereof, more than 30% but not more than 40% of a calcium oxide powder having an average particle size of 75 ?m to 150 ?m, and not less than 60% but less than 70% of a mixed aluminum powder in which an aluminum powder having such a particle size distribution that a particle size of 45 ?m pass is 70.0 to 80.0% and a particle size of 45 to 75 ?m is 20.0 to 30.0% and an aluminum powder having such a particle size distribution that a particle size of 45 ?m pass is 60 to 70%, a particle size of 45 ?m is 20 to 30%, a particle size of 63 ?m is 7 to 10% and a particle size of 75 ?m is 1.0 to 2.0% are mixed at a mass ratio of 1:2. This exothermic agent may further contain 5 to 10%, relative to its total mass, of at least one inorganic salt compound selected from the group consisting of calcium sulfate, ferrous sulfate, magnesium chloride, sodium sulfite, sodium phosphate, and sodium carbonate.

Abstract: To provide a novel water-addition type, chemical exothermic agent. An exothermic agent comprising, per mass thereof, more than 30% but not more than 40% of a calcium oxide powder having an average particle size of 75 ?m to 150 ?m, and not less than 60% but less than 70% of a mixed aluminum powder in which an aluminum powder having such a particle size distribution that a particle size of 45 ?m pass is 70.0 to 80.0% and a particle size of 45 to 75 ?m is 20.0 to 30.0% and an aluminum powder having such a particle size distribution that a particle size of 45 ?m pass is 60 to 70%, a particle size of 45 ?m is 20 to 30%, a particle size of 63 ?m is 7 to 10% and a particle size of 75 ?m is 1.0 to 2.0% are mixed at a mass ratio of 1:2. This exothermic agent may further contain 5 to 10%, relative to its total mass, of at least one inorganic salt compound selected from the group consisting of calcium sulfate, ferrous sulfate, magnesium chloride, sodium sulfite, sodium phosphate, and sodium carbonate.

Abstract: A method for the treatment of xerostomia not caused by Sjogren's syndrome comprising administering to an affected individual an effective amount of a derivative of spirooxathiolane-quinuclidine.

Abstract: A BTL power amplifier comprises main and inverse amplifier units having the same constitution but producing outputs inverted from each other. A low impedance load is directly connected between the output ports of the main and inverse amplifier units. The present BTL power amplifier further comprises a first operation control circuit which activates only the main amplifier unit after the power switch is turned on, and a second operation control circuit which maintains the output port of the inverse amplifier unit in a floating state for a predetermined period of time after the activation of the main amplifier unit is begun. Thus, the present BTL power amplifier produces no pop noise when the power supply is initiated.