Abstract: A formation apparatus of a hydroxyapatite-containing thin film includes a sputtering device which forms a thin film of a material including an antibacterial metal and hydroxyapatite on a surface of an object by sputtering, and a hydrothermal treatment device which performs hydrothermal treatment on the object, on which the thin film is formed, using an alkaline solution.

Abstract: According to the present invention, provided is a carbonate- and magnesium-substituted hydroxyapatite having a particle size of 5 nm or more and 60 nm or less, wherein a portion of the calcium atoms in the hydroxyapatite are substituted with magnesium atoms and a portion of phosphate groups are substituted with carbonate groups.

Abstract: A hydroxyapatite suspension preparation apparatus includes a container, first and second injection devices, a pH meter, a controller, and a pouring device. The injection device injects calcium hydroxide into the container. The second injection device injects phosphoric acid into a solution contained in the container. The pH meter measures a pH of the solution in the container. The controller controls concentration of the calcium hydroxide injected by the first injection device and at least one of concentration and an injection rate of the phosphoric acid injected by the second injection device so that the pH is within a predetermined range. The pouring device pours hydroxyapatite suspension concentrated by spontaneous sedimentation.

Abstract: According to an embodiment, an apparatus for applying hydroxyapatite to a nonwoven fabric includes a tank, a shower head, an ultrasonic wave generator, and a drying section. The tank stores suspension containing hydroxyapatite. The shower head jets the suspension against the nonwoven fabric in the suspension in the tank. The ultrasonic wave generator emits ultrasonic waves against the nonwoven fabric. The drying section dries the nonwoven fabric in a wet state removed from the suspension in the tank.

Abstract: Provided is a biometric data registration system, which displays screen data for causing a user to select whether a destination of registration of the user's biometric data is a card for payment or a registration destination server device, accepts from the user a selection of the destination of registration, and acquires the user's biometric data.If the selection indicates the card for payment, the biometric data registration system stores the biometric data in a first storage unit which is for managing data which is stored in a storage medium of the card for payment, whereas if the selection indicates the registration destination server device, the biometric data registration system stores the biometric data in a second storage unit which corresponds to the registration destination server device.

Abstract: Provided is a biometric data registration system, which displays screen data for causing a user to select whether a destination of registration of the user's biometric data is a card for payment or a registration destination server device, accepts from the user a selection of the destination of registration, and acquires the user's biometric data. If the selection indicates the card for payment, the biometric data registration system stores the biometric data in a first storage unit which is for managing data which is stored in a storage medium of the card for payment, whereas if the selection indicates the registration destination server device, the biometric data registration system stores the biometric data in a second storage unit which corresponds to the registration destination server device.

Abstract: A multifunction card includes an integrated circuit. The integrated circuit includes a memory, a processor, and a communicator. The memory stores first software which is executed by the processor and realizes a card payment function, second software which is executed by the processor and realizes a function other than the card payment function, biometric data for a user capable of using the card payment function, and setting data which represents that biometric authentication for the first software is necessary and whether biometric authentication for the second software is necessary.

Abstract: A virtual reality system includes a first information processing device, a virtual reality headset, a biometric data acquisition device, a first sensor, and a second sensor. The first information processing device creates virtual reality content. The virtual reality headset is worn by the user and displays the virtual reality content received from the first information processing device to the user. The biometric data acquisition device acquires biometric data of the user. The first information processing device adds an image making the user recognize the position and the direction of the biometric data acquisition device to the virtual reality content on the basis of position and direction information created by the first sensor and the second sensor.