Abstract: An ink composition at least contains a compound A having a hydroxy group and a compound B having an aldehyde group as polyoxyalkylene alkyl ether surfactants. The mass ratio of the compound B to the compound A is 0.5×10?4 to 30×10?4.

Abstract: An object detection apparatus drives a piezoelectric vibrator to transmit an ultrasonic wave, and receives a reflected wave that is reflected from an object. The object detection apparatus includes the piezoelectric vibrator, a drive circuit that supplies drive power which drives the piezoelectric vibrator, and a resistor section that is connected in parallel with the piezoelectric vibrator and has a resistance value that is variable.

Abstract: An ink composition contains dyes A and B. Dye A has a width at a half height of the largest peak in the absorption spectrum between 380 nm and 780 nm that is 50 nm or less. Dye B has a corresponding width at the half height that is 70 nm or more. Dye A is present in an amount of 40% by mass or more and 90% by mass or less of the total mass of the dyes.

Abstract: A train control system controls an operation of a train by transmitting and receiving, between an on-vehicle wireless station mounted on the train and a ground wireless base station, information that includes train control information by wireless communication. General transmission information, which is information included in the information that includes the train control information and is transmitted only once from the ground wireless base station to the on-vehicle wireless station. The train control information is transmitted repeatedly a plurality of times from the ground wireless base station to the on-vehicle wireless station. Among the repeatedly transmitted train control information, the on-vehicle wireless station uses, for an operation of the train, a piece of train control information, which the on-vehicle wireless station receives without lack of data lack for a first time.

Abstract: An ink composition contains water, at least one surfactant, and a pigment. The pigment has a specific surface area of 10 m2/g or more and 50 m2/g or less as determined by pulsed NMR at 30° C.

Abstract: An ink composition contains resin particles, a pigment, glycol ether, and water, wherein the resin particles satisfy the condition defined by Relational Expression (1) 1.0?(?2/?1)?12.5??(1) (where ?1 represents the volume average particle size of the resin particles in a solution containing 20 mass % of the resin particles and 80 mass % of water, and ?2 represents the volume average particle size of the resin particles in a solution containing 90 mass % of the resin particles and 10 mass % of water).

Abstract: An ink set includes a reaction liquid containing coagulant; a first ink containing a color material; and a second ink containing a color material. The ink set is used for recording on a non-absorptive recording medium or a low-absorptive recording medium and for imparting the reaction liquid, the first ink, and the second ink to the recording medium in a superimposed manner in this order.

Abstract: An aqueous ink set for ink jet recording includes an aqueous pigment ink containing water and a pigment as a coloring agent and an aqueous dye ink containing water and a dye as a coloring agent, in which the concentration of the divalent metal ions of the pigment ink is 10 ppm or more, and the potassium ion concentration of the dye ink is 50 ppm or less.

Abstract: An ink composition of the invention is an ink composition to be charged in an ink storage container which includes an ink composition-replenishable ink chamber and an ink inlet, and the ink chamber is able to communicate with outside air. The ink composition includes a pigment; an organic compound; and water, and a resolubility index is 0.5 to 10 minutes, the resolubility index indicating a time required for that after the mass of the ink composition is decreased by 50%, the viscosity thereof is returned to an ink viscosity before the mass is decreased by addition of water in an amount equivalent to the decreased mass.

Abstract: An ink set includes a reaction liquid containing coagulant; a first ink containing a color material; and a second ink containing a color material. The ink set is used for recording on a non-absorptive recording medium or a low-absorptive recording medium and for imparting the reaction liquid, the first ink, and the second ink to the recording medium in a superimposed manner in this order.

Abstract: A wireless communication unit transmits and receives signals to and from a base station and measures the received quality of downlink signals. A position information acquisition unit acquires position information on a mobile station. A measurement information management unit acquires the position information, received quality information, and received quality information that is measurement result of received quality of uplink signals from the mobile station, and stores measurement information which is received quality information on signals transmitted and received between the mobile station and the base station. A communication connection control unit acquires the position information from the position information acquisition unit, and performs a handover when a position of the mobile station is a handover position so as to switch base stations to be connected.

Abstract: An ink jet textile printing ink composition includes water; a color material; and a metal chelating agent. In the ink composition described above, the metal chelating agent includes at least one selected from methyl glycine diacetic acid, L-glutamate diacetic acid, L-aspartic diacetic acid, hydroxyethylimino diacetic acid, 3-hydroxy-2,2?-iminodisuccucinic acid, dicarboxymethyl glutamic acid, (S,S)-ethylenediaminedisuccinic acid, and salts thereof, and the pH of the ink composition is 6 to 10.

Abstract: An aqueous ink set for ink jet recording includes an aqueous pigment ink containing water and a pigment as a coloring agent and an aqueous dye ink containing water and a dye as a coloring agent, in which the concentration of the divalent metal ions of the pigment ink is 10 ppm or more, and the potassium ion concentration of the dye ink is 50 ppm or less.

Abstract: A train control system enabling a train to smoothly travel while performing handover. The system includes an on-vehicle wireless station mounted on a train following a preceding train and connected to an on-vehicle control device of the train, ground wireless base stations capable of wirelessly communicating with the on-vehicle wireless station, and a base station control device to control the base stations. The ground wireless base station is located between the ground wireless base station with which the on-vehicle wireless station is communicating and the ground wireless base station forming a communication area including a travelling permission point determined by a position of the train. The base station control device reserves radio resources of the ground wireless base stations while communicating with the ground wireless base station.

Abstract: A manufacturing method for a joint part in which a first metal piece and a second metal piece are joined to each other by performing welding by irradiating a high-energy beam to a joint surface on which the first metal piece and the second metal piece face each other, the first metal piece including a first flow path for passage of a fluid provided at a specific depth from a surface on a side exposed to the high-energy beam, the second metal piece including a second flow path for passage of the fluid provided at a specific depth from the surface on the side exposed to the high-energy beam, and the first flow path and the second flow path being coupled to each other on the joint surface.

Abstract: An ink composition at least contains a compound A having a hydroxy group and a compound B having an aldehyde group as polyoxyalkylene alkyl ether surfactants. The mass ratio of the compound B to the compound A is 0.5×10?4 to 30×10?4.

Abstract: A recording method includes first coating a treatment liquid A to a recording medium, a second coating a treatment liquid B to the recording medium after the first coating, and a discharging an ink composition including a coloring material to the recording medium by discharging from a nozzle after the second coating, and the treatment liquid A adjusts wettability of the treatment liquid B to the recording medium and includes at least any one of a resin and inorganic oxide fine particles, and the treatment liquid B thickens or insolubilizes the ink composition and includes at least any one of a polyvalent metal salt, an organic acid, and an organic acid salt.

Abstract: An ultraviolet curable composition includes a polymerizable compound and is stored in a storage body, in which an amount of water is greater than or equal to 0.05 mass % and less than or equal to 1.0 mass % with respect to a total amount of the ultraviolet curable composition, a content of at least one metal element selected from a group consisting of Li, Na, K, Ag, Mg, Ca, Ba, Zn, Fe, Sn, Al, and Zr is greater than or equal to 10 ppm by mass, and a content of each metal element included in the group is less than or equal to 250 ppm by mass.

Abstract: The ink jet recording method is an ink jet recording method used in a recording apparatus including a white ink containing a white color material, a resin ink containing a resin, and a glitter ink containing a glitter pigment, and a head for recording using the white ink, the resin ink, and the glitter ink, the method including firstly forming a white ink layer on a recording medium, secondly forming a resin ink layer on the white ink layer, and thirdly forming the glitter ink layer on the white ink layer.

Abstract: There is provided an ultraviolet-curable ink jet composition, which is stored in an storage body, including a pigment; a pigment dispersant; a polymerizable compound; and a photopolymerization initiator, in which water content is 0.05 mass % to 1.0 mass % based on the total amount of the ultraviolet-curable ink jet composition, and in which both the acid value and the amine value of the pigment dispersant are 50 mgKOH/g or less, and at least one of the acid value and the amine value thereof is 10 mgKOH/g or more.