Abstract: A cell culture method includes performing adherent culture of cells on a coat layer layered on a surface of a cell culture container by placing a culture medium and the cells in the cell culture container. The coat layer includes a layer (i) that includes a layer (i-1) including gelatin or casein and a layer (i-2) that includes a polycationic material and a layer (ii) that is layered on the layer (i) and includes a cell adhesion factor. The layer (ii) is disposed at a position at which the layer (ii) comes into contact with the cells, or the coat layer includes the layer (i) and the layer (i) is disposed at a position at which the layer (i) comes into contact with the cells, and the culture medium includes the cell adhesion factor.

Abstract: At least one of a discharging tendency of waste based on a discharge history of discharge of the waste by a user of a service and a discharge prediction about the waste based on the purchase history of a product by the user is calculated. A need prediction about the service is calculated by using a prediction model which uses, as a parameter, at least one of the discharging tendency of the waste and the discharge prediction about the waste. A level of the service is estimated by a simulation which uses, as parameters, the need prediction and a resource employed for the service. A notification is transmitted to the user suggesting a modification of behavior of at least one of discharge of the waste and purchase of a product by the user based on a comparison result between an estimated level and a stipulated level of the service.

Abstract: A working method using an AUV includes a step of working on a work object with a work device included in the AUV while causing the AUV to sail along the work object, a step of dropping and sinking a transponder to the bottom of water, a step of causing the AUV to sail toward a return destination, and a step of resuming work on the work object by causing the AUV to sail from a return destination to the vicinity of a work suspended position, at which work on the work object is suspended, based on information obtained by acoustic positioning using the transponder that is sunk to the bottom of water.

Abstract: A cell-containing structure is provided that allows ready-to-use nerve drug response evaluation with high reproducibility to be easily performed. The cell-containing structure for evaluating an electrical property of neurons includes: (a) a culture surface to which the neurons are able to be adhered; (b) a cell mass that is adhered to the culture surface and contains at least one of the neurons; and (c) a plurality of electrodes for measuring the electrical property of the cell mass, wherein a spontaneous firing frequency of cells contained in the cell mass is 0.25 Hz or more per electrode.

Abstract: A submersible vessel includes: a hull; a propulsor that propels the hull; a front sensor that sequentially detects locations of an inspection target in front of the hull; a controller that controls the propulsor such that the hull passes through above the detected locations; a movable arm attached to an arm reference point of the hull; an inspection tool at the movable arm that inspects the inspection target; and a position detector that acquires positional information including a position, attitude, or speed of the hull. Based on the information from the position detector, the controller estimates a pass-through position of the arm reference point after a predetermined time. The controller controls the movable arm such that before the time elapses, a positional relation between the arm reference point and inspection tool becomes a positional relation between the estimated pass-through position and a target point on or above each location.

Abstract: An underwater vehicle system includes: a first underwater vehicle configured to perform work in water while moving in a predetermined proceeding direction; and a second underwater vehicle configured to replace the first underwater vehicle and perform work in water. When the second underwater vehicle replaces the first underwater vehicle, the second underwater vehicle approaches the first underwater vehicle based on a signal transmitted from the first underwater vehicle.

Abstract: An underwater power supply system includes: a working apparatus arranged underwater with at least one power receiving pad; a first battery unit detachably attached to the apparatus with a power supplying pad and battery, the pad configured to supply electric power to the power receiving pad in a non-contact state, the battery electrically connected to the power supplying pad; and an underwater sailing body configured to shuttle between the apparatus and a surface ship or an underwater station suspended from the surface ship, the body configured to carry a second battery unit to the apparatus, detach the first battery unit from the apparatus, and attach the second battery unit to the apparatus, the second battery unit including a power supplying pad and battery, the pad configured to supply the electric power to the power receiving pad in a non-contact state, the battery electrically connected to the power supplying pad.

Abstract: A working method using an AUV includes a step of working on a work object with a work device included in the AUV while causing the AUV to sail along the work object, a step of dropping and sinking a transponder to the bottom of water, a step of causing the AUV to sail toward a return destination, and a step of resuming work on the work object by causing the AUV to sail from a return destination to the vicinity of a work suspended position, at which work on the work object is suspended, based on information obtained by acoustic positioning using the transponder that is sunk to the bottom of water.

Abstract: An underwater power supply system includes: a working apparatus arranged underwater with at least one power receiving pad; a first battery unit detachably attached to the apparatus with a power supplying pad and battery, the pad configured to supply electric power to the power receiving pad in a non-contact state, the battery electrically connected to the power supplying pad; and an underwater sailing body configured to shuttle between the apparatus and a surface ship or an underwater station suspended from the surface ship, the body configured to carry a second battery unit to the apparatus, detach the first battery unit from the apparatus, and attach the second battery unit to the apparatus, the second battery unit including a power supplying pad and battery, the pad configured to supply the electric power to the power receiving pad in a non-contact state, the battery electrically connected to the power supplying pad.