Abstract: Provided are a method for producing carbonate esters, and a catalytic structure for producing carbonate esters, whereby solid catalyst powder formation and detachment are suppressed and superior carbonate ester reaction efficiency is yielded when a catalytic structure constituted by a sufficient quantity of a cerium-oxide-containing solid catalyst supported on a substrate is used. The method for producing carbonate esters includes reacting a monohydric alcohol and carbon dioxide in the presence of a catalytic structure and a hydrating agent. The catalytic structure includes a substrate and a catalytic layer that is formed on at least a portion of the surface of the substrate and contains a solid catalyst and an inorganic binder. The solid catalyst contains cerium oxide. The supported quantity of the solid catalyst is 15 g/m2 to 200 g/m2, inclusive. The inorganic binder contains silica and/or alumina.

Abstract: The present invention provides a method for producing 2-furonitrile by dehydrating 2-furamide in the presence of an Mo/SiO2 catalyst in which molybdenum (Mo) is supported on a carrier formed from SiO2. Further, a preferred embodiment of the present invention involves dehydration in the presence of a desiccant such as a molecular sieve.

Abstract: A work vehicle comprising: a drive wheel unit that is provided in a vehicle body and is configured to be driven by a travel drive mechanism; a work unit that is provided in the vehicle body and is configured to perform work on a work target; a battery provided in the vehicle body; a motor that is configured to receive electric power from the battery and drive the work unit; an inclination sensor configured to detect an inclination of the vehicle body relative to a horizontal plane; and a first captured image acquisition unit configured to acquire a captured image that shows surroundings of the vehicle body when the work is being performed.

Abstract: Provided is an accommodation device capable of transporting a work vehicle(s) smoothly. The accommodation device is configured to accommodate a plurality of work vehicles that carry out a work while traveling autonomously, including a plurality of accommodation cases mounted on a load carrying bed of a transporter vehicle being capable of accommodating the plurality of work vehicles individually, a supporting section for supporting the plurality of accommodation cases respectively with allowing movement thereof along a preset path, an actuator for driving the supporting section for causing the accommodation cases to move along the path, and an electric generator for supplying electric power to the actuator.

Abstract: A work vehicle that performs an operation while traveling autonomously includes: a base frame configured to support a wheel; a unit frame configured to support an operation unit that performs the operation; a link frame capable of changing a relative height of the unit frame with respect to the base frame, the link frame spanning between the base frame and the unit frame; and a setting unit configured to set an operating height of the operation unit with respect to a working surface of a working field in which the operation is performed, in accordance with operation information indicating an operation target to be subjected to the operation.

Abstract: A work area determination system for an autonomous traveling work machine which is controlled autonomously based on self machine position information indicative of a self machine position, the work area determination system including an operation terminal capable of determining a work area. The operation terminal includes a positioning device for acquiring terminal position information indicative of a position of the operation terminal, a work area determination section that determines the work area based on the terminal position information, and a work area information outputting section for outputting work area information which is information relating to the determined work area.

Abstract: A work vehicle comprising: a drive wheel unit that is provided in a vehicle body and is configured to be driven by a travel drive mechanism; a work unit that is provided in the vehicle body and is configured to perform work on a work target; a battery provided in the vehicle body; a motor that is configured to receive electric power from the battery and drive the work unit; an inclination sensor configured to detect an inclination of the vehicle body relative to a horizontal plane; and a first captured image acquisition unit configured to acquire a captured image that shows surroundings of the vehicle body when the work is being performed.

Abstract: A work vehicle that performs an operation while traveling autonomously includes: a base frame configured to support a wheel; a unit frame configured to support an operation unit that performs the operation; a link frame capable of changing a relative height of the unit frame with respect to the base frame , the link frame spanning between the base frame and the unit frame; and a setting unit configured to set an operating height of the operation unit with respect to a working surface of a working field in which the operation is performed, in accordance with operation information indicating an operation target to be subjected to the operation.

Abstract: A work area determination system for an autonomous traveling work machine which is controlled autonomously based on self machine position information indicative of a self machine position, the work area determination system including an operation terminal capable of determining a work area. The operation terminal includes a positioning device for acquiring terminal position information indicative of a position of the operation terminal, a work area determination section that determines the work area based on the terminal position information, and a work area information outputting section for outputting work area information which is information relating to the determined work area.

Abstract: An accommodation device is configured to accommodate a plurality of work vehicles that carry out a work while traveling autonomously includes a plurality of accommodation cases mounted on a load carrying bed of a transporter vehicle and capable of accommodating the plurality of work vehicles individually, a supporting section for supporting the plurality of accommodation cases respectively with allowing movement thereof along a preset path, an actuator for driving the supporting section for causing the accommodation cases to move along the path and an electric generator for supplying electric power to the actuator.