Abstract: An in-vehicle device is an in-vehicle device mounted on a vehicle and to provide with a driving unit, the device including: a control unit controlling the driving unit; and a communication unit for communicating with an in-vehicle ECU to be mounted on the vehicle, in which when an inhibition event for inhibiting diagnosis processing of the driving unit is detected at the time of performing the diagnosis processing, the control unit outputs a detection result notification indicating that the inhibition event is detected to the in-vehicle ECU through the communication unit.

Abstract: A non-transitory computer-readable storage medium storing a navigation monitoring program that causes at least one computer to execute a process, the process includes acquiring direction information that indicates a direction of a vessel and position information that indicates a position of the vessel; and predicting whether or not the vessel navigates along a course by inputting the acquired direction information and the acquired position information to a prediction model generated by machine learning by using direction information and position information for each of a plurality of vessels that has navigated in the past and a correct answer label that indicates whether or not each of the plurality of vessels navigates along a course.

Abstract: An electrochemical sensor is used in a state of being immersed in water to be inspected for water quality inspection. The electrochemical sensor includes a working electrode, a reference electrode, a first counter electrode, and a second counter electrode. The working electrode, the reference electrode, the first counter electrode, and the second counter electrode are electrically isolated from each other.

Abstract: The purpose of the present disclosure is to provide a method for regenerating a highly water-absorbing polymer that has been deactivated by an acid, the method enabling formation of a highly water-absorbing recycled polymer having predetermined water absorption properties. The regeneration method according to the present disclosure is configured as follows. This method regenerates a highly water-absorbing polymer that has been deactivated by an acid into a highly water-absorbing recycled polymer having predetermined water absorption properties.

Abstract: A method of recovering urine-derived nutrient salts from a used absorbent article containing urine, includes: immersing the used absorbent article in an aqueous solution containing a calcium compound to deactivate a superabsorbent polymer; using a sieve to separate a solid-liquid mixture yielded by the deactivation into a first fraction containing the constituent materials of the absorbent article, and a second fraction containing an aqueous solution containing the calcium compound and nutrient salts, and nutrient-salt-containing sediment that has passed through the sieve; producing nutrient-salt-containing sediment using a HAP method; and adjusting the pH of the aqueous solution in contact with the nutrient-salt-containing sediment to within a range of 5.6-7.0, dissolving at least some of a calcium compound other than hydroxyapatite in the sediment, and increasing the hydroxyapatite content of the sediment.