Abstract: Provided are a magnetic disk and, in particular, a compound which makes it possible to realize a lubricant having excellent heat resistance and solubility in a fluorine-based solvent. A perfluoropolyether compound in accordance with an aspect of the present invention has, in hydrocarbon groups at both terminals thereof, five or six hydroxyl groups in total.

Abstract: A wound core includes a thin strip formed of a nanocrystalline material, having an oxidized surface, and wound in multiple layers. In the wound core, the thin strip has an oxidation degree at a central portion in a width direction of the thin strip that is different from an oxidation degree at end portions located on both sides of the central portion in the width direction of the thin strip.

Abstract: A non-heating type flavor component emission device includes: a hollow casing provided with a first opening, a second opening, and a flow path guiding an air flow from the first opening to the second opening; a water retainer disposed in the flow path, retaining water, and emitting the water into the air flow; and an emitter disposed in the flow path closer to the second opening than to the water retainer, and emitting a flavor component into the air flow. The emitter includes: an absorber containing a water absorbing material; a moisture control component containing salt that forms hydrate crystals within a relative humidity range of 30% RH or more and 80% RH or less, the moisture control component being contained in the water absorbing material, and absorbing and emitting water; and the flavor component.

Abstract: Provided is a compound which allows realization of a lubricant having high adsorbability and a high covering property with respect to a magnetic disk, particularly a carbon protective film. A perfluoropolyether compound in accordance with an aspect of the present invention has a naphthyl group or a phenoxyphenyl group at any one of terminals thereof.

Abstract: Provided is a compound with which a lubricant having excellent adhesion to a magnetic disk, particularly to a protective layer can be provided. A perfluoropolyether compound in accordance with one aspect of this invention has a structure in which two perfluoropolyethers are bonded to each other through an aliphatic ether, the aliphatic ether including a carbon atom to which a primary alcohol is bonded.

Abstract: An object of an aspect of the present invention is to provide: a lubricant excellent in adsorbability on the surface of a magnetic disk and in contamination resistance; and a magnetic disk which uses the lubricant and which is excellent in durability. The lubricant in accordance with an aspect of the present invention contains a fluoropolyether compound having, at a terminal thereof, a hydroxyalkenyl group or a hydroxyalkynyl group.

Abstract: Provided are a magnetic disk and, in particular, a compound which makes it possible to realize a lubricant having excellent heat resistance and solubility in a fluorine-based solvent. A perfluoropolyether compound in accordance with an aspect of the present invention has, in hydrocarbon groups at both terminals thereof, five or six hydroxyl groups in total.

Abstract: Provided is a compound which allows realization of a lubricant having high adsorbability and a high covering property with respect to a magnetic disk, particularly a carbon protective film. A perfluoropolyether compound in accordance with an aspect of the present invention has a naphthyl group or a phenoxyphenyl group at any one of terminals thereof.

Abstract: Provided is a lubricant solution capable of being applied to a magnetic disk without use of a fluorine solvent. A lubricant solution in accordance with an aspect of the present invention includes: water; and a perfluoropolyether compound that satisfies Expression (I) below: NOH/(Mn/1500)?2??(1), where NOH represents the number of hydroxyl groups per molecule of the perfluoropolyether compound and Mn represents a number average molecular weight of the perfluoropolyether compound.

Abstract: Provided is a compound with which a lubricant having excellent adhesion to a magnetic disk, particularly to a protective layer can be provided. A perfluoropolyether compound in accordance with one aspect of this invention has a structure in which two perfluoropolyethers are bonded to each other through an aliphatic ether, the aliphatic ether including a carbon atom to which a primary alcohol is bonded.

Abstract: Provided are a lubricant that is highly resistant to contamination and highly thermally stable, a lubricant that is highly durable and highly heat resistant, and a magnetic disk. A fluoropolyether compound contains perfluoropolyether groups, end groups each containing at least one hydroxyl group, and a linking group that is comprised of a C4-C14 hydrocarbon group and that contains at least one hydroxyl group.

Abstract: An object of an aspect of the present invention is to provide: a lubricant excellent in adsorbability on the surface of a magnetic disk and in contamination resistance; and a magnetic disk which uses the lubricant and which is excellent in durability. The lubricant in accordance with an aspect of the present invention contains a fluoropolyether compound having, at a terminal thereof, a hydroxyalkenyl group or a hydroxyalkynyl group.

Abstract: This accelerator play measurement device measures the play opening of an accelerator pedal of a vehicle, and includes: an accelerator actuator for operating the accelerator pedal; a vehicle speed sensor for detecting the vehicle speed of the vehicle; a first measurement unit for calculating a provisional play opening on the basis of a change in vehicle speed detection value from the vehicle speed sensor when the accelerator actuator has been driven and the accelerator pedal opening degree has been increased at a first speed from a fully-closed opening degree; and a second measurement unit for detecting the play opening on the basis of a change in vehicle speed detection value when the accelerator actuator has been driven and the accelerator pedal opening degree has been increased at a second speed higher than the first speed from the fully-closed opening degree to close to the provisional play opening.

Abstract: This accelerator play measurement device measures the play opening of an accelerator pedal of a vehicle, and includes: an accelerator actuator for operating the accelerator pedal; a vehicle speed sensor for detecting the vehicle speed of the vehicle; a first measurement unit for calculating a provisional play opening on the basis of a change in vehicle speed detection value from the vehicle speed sensor when the accelerator actuator has been driven and the accelerator pedal opening degree has been increased at a first speed from a fully-closed opening degree; and a second measurement unit for detecting the play opening on the basis of a change in vehicle speed detection value when the accelerator actuator has been driven and the accelerator pedal opening degree has been increased at a second speed higher than the first speed from the fully-closed opening degree to close to the provisional play opening.

Abstract: The driving support ECU performs a steering control for changing a steering angle in such a manner that an own vehicle travels along a target path. When a state in which holding state information does not satisfy a first condition continues for a first time threshold or more, the ECU starts a first alert and continues the steering control. The holding state information includes information indicative of a steering torque and represents a holding state of a steering handle by a driver. When a state in which the holding state information does not satisfy a second condition for a second time threshold or more after the first alert is started, the ECU starts a deceleration control. The second condition is a condition satisfied when the holding state information indicates that the driver holds the steering handle more firmly than when the holding state information satisfies the first condition.

Abstract: Provided are a lubricant that is highly resistant to contamination and highly thermally stable, a lubricant that is highly durable and highly heat resistant, and a magnetic disk. A fluoropolyether compound contains perfluoropolyether groups, end groups each containing at least one hydroxyl group, and a linking group that is comprised of a C4-C14 hydrocarbon group and that contains at least one hydroxyl group.

Abstract: The driving support ECU performs a steering control for changing a steering angle in such a manner that an own vehicle travels along a target path. When a state in which holding state information does not satisfy a first condition continues for a first time threshold or more, the ECU starts a first alert and continues the steering control. The holding state information includes information indicative of a steering torque and represents a holding state of a steering handle by a driver. When a state in which the holding state information does not satisfy a second condition for a second time threshold or more after the first alert is started, the ECU starts a deceleration control. The second condition is a condition satisfied when the holding state information indicates that the driver holds the steering handle more firmly than when the holding state information satisfies the first condition.

Abstract: A biological signal measuring system includes a sensor and a biological signal measuring apparatus configured to calculate a blood refill time of a living tissue of a subject. The sensor includes a pressure applying portion configured to apply pressure on the living tissue, a light emitter configured to emit light toward the living tissue, a light receiver configured to receive reflected light or transmitted light from the living tissue, a first light transmitting member made of a light transmitting material and having one side contacting the light emitter and the other side arranged to contact the subject, a second light transmitting member made of a light transmitting material and having one side contacting the light receiver and the other side arranged to contact the subject, and a light blocking member configured to block light between the light emitter and the light receiver.

Abstract: A process for preparing a low-molecular weight fluoropolyether containing an acid fluoride by decomposing a triflate or trifluoroacetate of a fluoropolyether having a hydroxyl group in the presence of a Lewis acid.

Abstract: Disclosed is a fluoropolyether compound comprising a C4-10 aliphatic hydrocarbon chain present in the middle of the fluoropolyether compound and at least two perfluoropolyethers.