Abstract: A work machine includes: a partition member provided with an intake port and an exhaust port and forming an engine room; an engine disposed in the engine room; a cooling fan disposed on an intake port side of the engine in the engine room; an exhaust pipe discharging exhaust gas from the engine; and an exhaust duct disposed in the engine room and having an inflow port into which air from the cooling fan flows, and an outflow port. At least a portion of the exhaust duct is disposed above the engine and has a facing surface facing the engine and a through-hole provided in the facing surface. At least a portion of the exhaust pipe is disposed in the through-hole. A gap is formed between an outer surface of the exhaust pipe and an inner surface of the through-hole.

Abstract: A plant drawing line detection system acquires a plant drawing that is used for construction, operation, and maintenance of a plant, displays the acquired plant drawing, accepts selection of a line that is desired from among a plurality of lines that are present in the displayed plant drawing, registers a line pattern of the accepted selection of the line, detects, from the displayed plant drawing, all of the lines each having a shape that is matched with a shape of the registered line pattern including the line that has been used for the selection, and provides a detection result related to the lines.

Abstract: A plant drawing symbol detection system acquires a plant drawing that is used for construction, operation, and maintenance of a plant, displays the acquired plant drawing, accepts selection of a symbol that is desired from among a plurality of symbols that are present in the displayed plant drawing, registers a symbol pattern of the accepted selection of the symbol, detects, from the displayed plant drawing, all of the symbols each having a shape that is matched with a shape of the registered symbol pattern including the symbol that has been used for the selection, and provides a detection result related to the symbols.

Abstract: A control circuit has a three-phase modulation operation mode under which a three-phase modulation signal is output to an inverter circuit as a pulse width modulation signal, a two-phase modulation operation mode under which a two-phase modulation signal is output to the inverter circuit as the pulse width modulation signal, and a transitional operation mode under which one of the three-phase modulation operation mode and the two-phase modulation operation mode is switched to the other. The control circuit transitions to the transitional operation mode in response to a reference signal set in advance, and switches an operation by outputting to the inverter circuit, a transition modulation signal with a mixture ratio between the three-phase modulation signal and the two-phase modulation signal being gradually changed in a predetermined electrical angle interval unit.

Abstract: An information processing device keeps a plurality of sets of designing information each on a combination of a plurality of plant devices that execute an operation a plant and at least one control device that executes control on each of the plant devices, keeps operational past records with respect to each combination of a plurality of plant devices and a control device, extracts combinations of a plurality of plant devices and a control device that meet a designing condition on the plant based on the designing information, and outputs the extracted combinations of a plurality of plant devices and a control device based on the operational past records.

Abstract: Provided is an equipment registration terminal comprising: a position determination unit configured to determine a position of the equipment registration terminal; a positioning means storage unit configured to store information on a positioning means to determine the position of the equipment registration terminal; an error estimation unit configured to estimate a positioning error in the position of the equipment registration terminal based on the information on the positioning means; and an equipment registration unit configured to register, in registration of a position of equipment to be registered by using the position of the equipment registration terminal, an error in the position of the equipment based on the positioning error, in an associated manner. The positioning means storage unit may store information indicating a positioning method in the positioning means, and the error estimation unit may estimate the positioning error according to the positioning method.

Abstract: A detection apparatus includes a suction pressure acquirer configured to acquire suction pressure data indicating suction pressure of a pump, and a detector configured to detect occurrence of cavitation in the pump based on a variation coefficient of the suction pressure data during a detection target period.

Abstract: Provided is an equipment registration terminal comprising: a position determination unit configured to determine a position of the equipment registration terminal; a positioning means storage unit configured to store information on a positioning means to determine the position of the equipment registration terminal; an error estimation unit configured to estimate a positioning error in the position of the equipment registration terminal based on the information on the positioning means; and an equipment registration unit configured to register, in registration of a position of equipment to be registered by using the position of the equipment registration terminal, an error in the position of the equipment based on the positioning error, in an associated manner. The positioning means storage unit may store information indicating a positioning method in the positioning means, and the error estimation unit may estimate the positioning error according to the positioning method.

Abstract: An engineering apparatus that is used for supporting engineering of facilities in an industrial plant according to one aspect of the present invention includes a storage storing a first data file group including first data files, the first data files including element information indicating one or a plurality of functional blocks that are constituent elements of a control logic for controlling operation of the industrial plant, a processor configured to change the element information included in the first data files, and a determiner configured to acquire a second data file group including second data files, the second data files including the changed element information in another engineering apparatus, extract differential files including the changed element information from each of the first data file group and the second data file group, and determine whether there is mismatching between functional blocks indicated by the element information included in the differential files.

Abstract: A detection apparatus includes a suction pressure acquirer configured to acquire suction pressure data indicating suction pressure of a pump, and a detector configured to detect occurrence of cavitation in the pump based on a variation coefficient of the suction pressure data during a detection target period.

Abstract: Easily detecting cavitation to occur in a pump. A detection apparatus, a detection method, and a program are provided. The detection apparatus includes: a discharge pressure acquiring unit to acquire discharge pressure data indicating discharge pressure of a pump; and a detector to detect occurrence of cavitation in the pump based on a fluctuation amount of a time waveform of the discharge pressure data during a target detection period. The detector may have: a fluctuation amount calculator to calculate the fluctuation amount of the discharge pressure data during the target detection period; and a determining unit to determine, in response to the calculated fluctuation amount becoming the reference fluctuation amount or more, that cavitation has occurred in the pump.

Abstract: An I/O module includes a base plate, a plurality of universal circuits, and an option module. The base plate includes a plurality of connection terminals. A plurality of field devices is electrically connectable to the connection terminals. The universal circuits correspond to the connection terminals. The universal circuits are provided on the base plate, and configured to perform an input of analog signals from the field device, an output of analog signals to the field device, an input of discrete signals from the field device, and an output of discrete signals to the field device. The option module is detachably provided in the base plate. The option module is provided between a first connection terminal of the connection terminals and a first universal circuit of the universal circuits. The option module includes a first circuit configured to performing transmitting and receiving of signals between the first connection terminal and the first universal circuit.

Abstract: An I/O module includes a base plate, a plurality of universal circuits, and an option module. The base plate includes a plurality of connection terminals. A plurality of field devices is electrically connectable to the connection terminals. The universal circuits correspond to the connection terminals. The universal circuits are provided on the base plate, and configured to perform an input of analog signals from the field device, an output of analog signals to the field device, an input of discrete signals from the field device, and an output of discrete signals to the field device. The option module is detachably provided in the base plate. The option module is provided between a first connection terminal of the connection terminals and a first universal circuit of the universal circuits. The option module includes a first circuit configured to performing transmitting and receiving of signals between the first connection terminal and the first universal circuit.

Abstract: An I/O module includes a base plate, a plurality of universal circuits, and an option module. The base plate includes a plurality of connection terminals. A plurality of field devices is electrically connectable to the connection terminals. The universal circuits correspond to the connection terminals. The universal circuits are provided on the base plate, and configured to perform an input of analog signals from the field device, an output of analog signals to the field device, an input of discrete signals from the field device, and an output of discrete signals to the field device. The option module is detachably provided in the base plate. The option module is provided between a first connection terminal of the connection terminals and a first universal circuit of the universal circuits. The option module includes a first circuit configured to performing transmitting and receiving of signals between the first connection terminal and the first universal circuit.

Abstract: An engineering apparatus that is used for supporting engineering of facilities in an industrial plant according to one aspect of the present invention includes a storage storing a first data file group including first data files, the first data files including element information indicating one or a plurality of functional blocks that are constituent elements of a control logic for controlling operation of the industrial plant, a processor configured to change the element information included in the first data files, and a determiner configured to acquire a second data file group including second data files, the second data files including the changed element information in another engineering apparatus, extract differential files including the changed element information from each of the first data file group and the second data file group, and determine whether there is mismatching between functional blocks indicated by the element information included in the differential files.

Abstract: A method for producing a modified conjugated diene-based polymer having a good balance between the hysteresis loss properties and the wet skid resistance, practically sufficient abrasion resistance and breaking strength, and high processability when formed into a vulcanized product is provided. A method for producing a modified conjugated diene-based polymer, comprising: a polymerization step of polymerizing a conjugated diene compound, copolymerizing conjugated diene compounds, or copolymerizing a conjugated diene compound with an aromatic vinyl compound using an alkali metal compound or an alkaline earth metal compound as a polymerization initiator to obtain a conjugated diene-based polymer having an active end, and a modifying step of reacting a compound represented by following formula (1) with the active end of the conjugated diene-based copolymer.

Abstract: An object of the present invention is to improve, in the raw material rubber compound particularly using a silica-based filler, which is used for tire tread, the balance between the rolling resistance and the skid resistance on a wet road surface and at the same time, improve the wear resistance is enhanced. The present invention provides an oil-extended polymer composition comprising 100 parts by weight of (A) a polymer having a number average molecular weight Mn of 500,000 to 700,000 and a content of a functional group-containing polymer component to be adsorbed to silica of 50 wt % or more, and from 20 to 60 parts by weight of (B) an extender oil.

Abstract: A method for producing a modified conjugated diene polymer comprising a polymerization step of obtaining a conjugated diene polymer containing a nitrogen atom in a polymer chain and an active end by copolymerizing a conjugated diene compound and a nitrogen atom-containing vinyl compound, or a conjugated diene compound, an aromatic vinyl compound and a nitrogen atom-containing vinyl compound by use of an alkali metal compound and/or an alkaline earth metal compound as a polymerization initiator, and a modification step of reacting a modifier.

Abstract: A method for producing a modified conjugated diene-based polymer having a good balance between the hysteresis loss properties and the wet skid resistance, practically sufficient abrasion resistance and breaking strength, and high processability when formed into a vulcanized product is provided. A method for producing a modified conjugated diene-based polymer, comprising: a polymerization step of polymerizing a conjugated diene compound, copolymerizing conjugated diene compounds, or copolymerizing a conjugated diene compound with an aromatic vinyl compound using an alkali metal compound or an alkaline earth metal compound as a polymerization initiator to obtain a conjugated diene-based polymer having an active end, and a modifying step of reacting a compound represented by following formula (1) with the active end of the conjugated diene-based copolymer.

Abstract: A method for producing a modified conjugated diene-based polymer having a good balance between the hysteresis loss properties and the wet skid resistance, practically sufficient abrasion resistance and breaking strength, and high processability when formed into a vulcanized product is provided. A method for producing a modified conjugated diene-based polymer, comprising: a polymerization step of polymerizing a conjugated diene compound, copolymerizing conjugated diene compounds, or copolymerizing a conjugated diene compound with an aromatic vinyl compound using an alkali metal compound or an alkaline earth metal compound as a polymerization initiator to obtain a conjugated diene-based polymer having an active end, and a modifying step of reacting a compound represented by following formula (1) with the active end of the conjugated diene-based copolymer.