Abstract: The present invention relates to a novel production method of a novel prostaglandin derivative or a pharmaceutically acceptable salt thereof useful as a medicament, and an intermediate therefor. According to the present invention, a production method of a novel prostaglandin derivative or a pharmaceutically acceptable salt thereof including a conversion step from a compound represented by the following formula 3 to a compound represented by the formula 1 can be provided: wherein each symbol is as defined in the DESCRIPTION.

Abstract: The present invention provides a carburized part which is formed by processing a steel into a shape of a part and performing a carburizing treatment on the steel, the steel having a composition consisting essentially of, in terms of % by mass: 0.10% to 0.40% of C; 0.05% to 2.00% of Si; 0.30% to 2.00% of Mn; 0.30% to 3.00% of Cr; 0.025% or less of N; and as a pinning particle forming element which forms a pinning particle by nitrification, one or two or more elements selected from: 0.020% to 0.100% of Al; 0.01% to 0.20% of Nb; and 0.005% to 0.20% of Ti, and optionally: 0.80% or less of Mo, with the remainder being Fe and inevitable impurities, in which a crystal grain size number of a surface layer of the part at a depth of 50 ?m or less from a surface is greater than 5, and the crystal grain size number of an inner portion of the part at a depth of 3 mm or more from the surface is 5 or less.

Abstract: The present invention relates to a novel production method of a novel prostaglandin derivative or a pharmaceutically acceptable salt thereof useful as a medicament, and an intermediate therefor. According to the present invention, a production method of a novel prostaglandin derivative or a pharmaceutically acceptable salt thereof including a conversion step from a compound represented by the following formula 3 to a compound represented by the formula 1 can be provided: wherein each symbol is as defined in the DESCRIPTION.

Abstract: The present invention relates to a novel prostaglandin derivative having an alkynyl group on ?-chain, particularly, a novel prostaglandin derivative having a double bond at the 2-position and an alkynyl group on the ?-chain and a medicament containing the compound as an active ingredient. According to the present invention, a compound represented by the formula (1) or a pharmaceutically acceptable salt thereof; wherein each symbol is as defined in the present specification, or a cyclodextrin clathrate compound thereof, and a medicament containing the compound as an active ingredient, particularly, a medicament for the prophylaxis or treatment of a blood flow disorder associated with spinal canal stenosis or chronic arterial occlusion, can be provided.

Abstract: The invention relates to a method of producing a compound represented by the formula (a) by reacting a compound represented by the formula (c) with a halogenating agent in a non-aqueous system: wherein R1 is a fluoroalkyl group having 1 to 3 carbon atoms, R2 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, R3 is an alkyl group having 1 to 6 carbon atoms, and X is a halogen atom.

Abstract: A station-building power-supply device includes: a detector that detects a ripple in an overhead line voltage and outputs information on the detected ripple and an overhead line voltage value; a determiner that compares the information with a threshold for determining whether a ripple is in the overhead line voltage, and outputs the overhead line voltage value obtained when a ripple is determined to be not in the overhead line voltage based on the comparison result; an estimator that estimates, based on the overhead line voltage value, a no-load voltage value of an overhead line in a no-load state; a controller that sets an additional value; and a calculator that adds the additional value to the no-load voltage value to calculate a regeneration determining voltage value for determining whether an electric vehicle performs regeneration, and outputs the regeneration determining voltage value to a circuit that utilizes energy generated by the regeneration.

Abstract: The present invention relates to a novel prostaglandin derivative having an alkynyl group on ?-chain, particularly, a novel prostaglandin derivative having a double bond at the 2-position and an alkynyl group on the ?-chain and a medicament containing the compound as an active ingredient. According to the present invention, a compound represented by the formula (1) or a pharmaceutically acceptable salt thereof; wherein each symbol is as defined in the present specification, or a cyclodextrin clathrate compound thereof, and a medicament containing the compound as an active ingredient, particularly, a medicament for the prophylaxis or treatment of a blood flow disorder associated with spinal canal stenosis or chronic arterial occlusion, can be provided.

Abstract: The station-building power supply device includes a capacitor unit that stores therein surplus regenerative power, a first power conversion unit that performs DC/DC power conversion, and a second power conversion unit that converts DC power. A first voltage threshold for detecting the occurrence of surplus regenerative power is set and a first SOC threshold for detecting whether the capacitor unit can discharge is set. The first power conversion unit is controlled such that power is supplied from the feeder to the capacitor unit to charge the capacitor unit when the feeding voltage exceeds the first voltage threshold, and the second power conversion unit is controlled such that power is supplied from the capacitor unit to the station loads when the SOC of the capacitor unit exceeds the first SOC threshold.

Abstract: A station building power supply device according to the present invention includes: a station building power generation unit including an inverter main circuit and an inverter control circuit to control the inverter main circuit, in which the inverter main circuit converts a voltage supplied from an overhead wire into a voltage required by loads in a station building; a control-circuit power generation unit that converts a voltage supplied to the loads in the station building and generates an input voltage for the inverter control circuit; and a start-up power generation unit that converts a voltage supplied from the overhead wire and generates an input voltage for the inverter control circuit, in a state where the inverter main circuit has stopped the operation and the control-circuit power generation unit has stopped an operation of generating the input voltage for the inverter control circuit.

Abstract: A station-building power supply device is provided in each station building and supplies low-voltage AC power to station building facilities of each station building. There are two mode therein: a regenerative mode in which, when regenerative power regenerated by a train to an overhead wire becomes surplus, the surplus regenerative power supplied from the overhead wire and power supplied from a high-voltage distribution line are used together to supply low-voltage AC power corresponding to an amount of normal power consumption of the station building; and a standby power supply mode in which, when a power outage of the high-voltage distribution line occurs, power supplied from the overhead wire is used to supply low-voltage AC power corresponding to an amount of emergency power of the station building.

Abstract: A station-building power-supply device includes: a detector that detects a ripple in an overhead line voltage and outputs information on the detected ripple and an overhead line voltage value; a determiner that compares the information with a threshold for determining whether a ripple is in the overhead line voltage, and outputs the overhead line voltage value obtained when a ripple is determined to be not in the overhead line voltage based on the comparison result; an estimator that estimates, based on the overhead line voltage value, a no-load voltage value of an overhead line in a no-load state; a controller that sets an additional value; and a calculator that adds the additional value to the no-load voltage value to calculate a regeneration determining voltage value for determining whether an electric vehicle performs regeneration, and outputs the regeneration determining voltage value to a circuit that utilizes energy generated by the regeneration.

Abstract: The invention provides a carburized part which has excellent medium-cycle fatigue strength in particular subjected to surface-hardening treatment by carburization. The invention provides a carburized part including a carburized layer formed by performing carburizing treatment to a steel, the steel including, in terms of % by mass: 0.15% to 0.25% of C, 0.15% or less of Si, 0.4% to 1.1% of Mn, 0.8% to 1.4% of Cr, 0.25% to 0.55% of Mo, 0.015% or less of P, and 0.035% or less of S, with the remainder being Fe and unavoidable impurities, and the steel satisfying the following relation; 0.10?[Mo]/(10[Si]+[Mn]+[Cr])?0.40, in which [M] represents a content of element M in terms of % by mass.

Abstract: To deprotect an alcoholic hydroxyl group protected by a t-butyldimethylsilyl group without influencing a functional group unstable to an acid. In the presence of a solvent, an alcohol having a hydroxyl group protected by a t-butyldimethylsilyl group is deprotected in the presence of an acid or an acid salt having a pKa of from 1.0 to 3.0 in water.

Abstract: The station-building power supply device includes a capacitor unit that stores therein surplus regenerative power, a first power conversion unit that performs DC/DC power conversion, and a second power conversion unit that converts DC power. A first voltage threshold for detecting the occurrence of surplus regenerative power is set and a first SOC threshold for detecting whether the capacitor unit can discharge is set. The first power conversion unit is controlled such that power is supplied from the feeder to the capacitor unit to charge the capacitor unit when the feeding voltage exceeds the first voltage threshold, and the second power conversion unit is controlled such that power is supplied from the capacitor unit to the station loads when the SOC of the capacitor unit exceeds the first SOC threshold.

Abstract: The present invention provides a carburized part which is formed by processing a steel into a shape of a part and performing a carburizing treatment on the steel, the steel having a composition consisting essentially of, in terms of % by mass: 0.10% to 0.40% of C; 0.05% to 2.00% of Si; 0.30% to 2.00% of Mn; 0.30% to 3.00% of Cr; 0.025% or less of N; and as a pinning particle forming element which forms a pinning particle by nitrification, one or two or more elements selected from: 0.020% to 0.100% of Al; 0.01% to 0.20% of Nb; and 0.005% to 0.20% of Ti, and optionally: 0.80% or less of Mo, with the remainder being Fe and inevitable impurities, in which a crystal grain size number of a surface layer of the part at a depth of 50 ?m or less from a surface is greater than 5, and the crystal grain size number of an inner portion of the part at a depth of 3 mm or more from the surface is 5 or less.

Abstract: A gear that is formed of material steel molded to include a disc portion and a plurality of tooth portions circumferentially discretely formed on the disc portion and have a shape in which tooth root portions are formed between the tooth portions, and is subjected to vacuum carburizing treatment and subsequent quenching treatment with high-density energy heating after being molded.

Abstract: A DC feeder voltage control apparatus includes a model-information storing unit storing train model information on each train running in a control section, substation model information on each substation, and feeding network model information in the control section, a fixed-voltage-value storing unit storing a fixed voltage value of a substation voltage set for each substation, a train-operation-state-information acquiring unit acquiring positions and operation state information on the trains running in the control section, a first-substation-voltage fixing unit outputting the fixed voltage value to two first substations located at both ends of the control section, and a second-substation-voltage calculating unit calculating a setting voltage value of the substation voltage in at least one second substation located between the two first substations based on the information, and substation voltages and substation currents of the first substations to output to the second substation.

Abstract: A station building power supply device according to the present invention includes: a station building power generation unit including an inverter main circuit and an inverter control circuit to control the inverter main circuit, in which the inverter main circuit converts a voltage supplied from an overhead wire into a voltage required by loads in a station building; a control-circuit power generation unit that converts a voltage supplied to the loads in the station building and generates an input voltage for the inverter control circuit; and a start-up power generation unit that converts a voltage supplied from the overhead wire and generates an input voltage for the inverter control circuit, in a state where the inverter main circuit has stopped the operation and the control-circuit power generation unit has stopped an operation of generating the input voltage for the inverter control circuit.

Abstract: A station-building power supply device is provided in each station building and supplies low-voltage AC power to station building facilities of each station building. There are two mode therein: a regenerative mode in which, when regenerative power regenerated by a train to an overhead wire becomes surplus, the surplus regenerative power supplied from the overhead wire and power supplied from a high-voltage distribution line are used together to supply low-voltage AC power corresponding to an amount of normal power consumption of the station building; and a standby power supply mode in which, when a power outage of the high-voltage distribution line occurs, power supplied from the overhead wire is used to supply low-voltage AC power corresponding to an amount of emergency power of the station building.

Abstract: To provide a method for producing a difluoro compound highly selectively in good yield without forming a hardly soluble by-product. An ester compound of the formula (1) is reacted and fluorinated with an electrophilic fluorinating agent in the presence of a basic compound and in the absence of a metal compound reactant to produce a difluoro ester compound of the formula (2). wherein R1 is a C1-30 alkyl group which may have a substituent, etc., and R2 is a C1-30 hydrocarbon group which may have a substituent, or R1 and R2 are bonded to form an alkylene group which forms, together with —C—C(O)—O—, a lactone ring.