Abstract: An actuator of an airbag device includes a main body portion, which is attached to an attachment base, and a cap including a fitting protruding portion that is inserted into a fitting recessed portion of the main body portion. The fitting protruding portion has a holding portion, which is inserted into a holding hole of a coupling member when fitted to the main body portion and holds a leading end portion of the coupling member, and a movement permitting unit that, when a ceiling portion of the cap is subjected to pressure of a combustion gas of a squib, causes the ceiling portion to move, and causes the holding portion to move from a holding position, wherein the holding portion is inserted into the holding hole of the coupling member, to a holding released position, wherein the holding portion is removed from the holding hole.

Abstract: A control system includes at least one processor and at least one memory. The at least one processor is configured to determine operation data by repeating a process of calculating control target data indicating a predicted value of a control target in a plant and the operation data indicating an operation value of a control device of the plant by a given calculation model based on observation data indicating an actual value of the plant.

Abstract: A portable electronic device 1 of the present invention is provided with: a first body 2A; a second body 2B, which can be arranged in either a first state of engaging with the first body 2A, or a second state of not engaging with the first body 2A, and one end side which has a concave portion 13, to which an external force is applied so as to transition from the first state to the second state; a sound input unit 31, which is provided between the first body 2A and the second body 2B; and a communicating portion 23 for establishing communication between the concave portion 13 of the second body 2B and the sound input unit 31, in the first state.

Abstract: A portable electronic device 1 of the present invention is provided with: a first body 2A; a second body 2B, which can be arranged in either a first state of engaging with the first body 2A, or a second state of not engaging with the first body 2A, and one end side which has a concave portion 13, to which an external force is applied so as to transition from the first state to the second state; a sound input unit 31, which is provided between the first body 2A and the second body 2B; and a communicating portion 23 for establishing communication between the concave portion 13 of the second body 2B and the sound input unit 31, in the first state.

Abstract: Disclosed is a heat-resistant diamond composite sintered body, which is prepared by sintering an ultrafine-grain synthetic diamond powder having an average grain size of 200 nm or less, without using a sintering aid. The composite sintered body comprises a diamond crystal and a minute amount of non-diamond carbon as a product, and has a Vickers hardness of 85 GPa or more. The composite sintered body is produced by a method comprising enclosing in a Ta or Mo capsule a synthetic diamond powder having an average grain size of 200 nm or less, and heating and pressurizing using an ultrahigh-pressure synthesizing apparatus under thermodynamically stable conditions including a temperature of 2100° C. or more and a pressure of 7.7 GPa or more.

Abstract: Disclosed is a high-purity high-hardness ultrafine-grain diamond sintered body having a grain size of 100 nm or less, which is produced by subjecting an ultrafine-grain natural diamond powder having a grading range of zero to 0.1 ?m to a desilication treatment, freeze-drying the desilicated powder in solution, enclosing the freeze-dried powder in a Ta or Mo capsule without a sintering aid, and heating and pressurizing the capsule using an ultrahigh-pressure synthesizing apparatus at a temperature of 1700° C. or more and under a pressure of 8.5 GPa or more, which meet the conditions for diamond to be the thermodynamically stable. The present invention can synthesize a diamond sintered body under a lower pressure than that in a conventional method, with a diamond's original hardness and without containing any sintering aid.