Abstract: A storage battery system includes a rechargeable storage battery and a solid heat storage portion. The solid heat storage portion is made of a heat storage material that reversibly undergoes a phase transition with absorption and release of a latent heat between a solid phase and a solid phase at a certain phase transition temperature. The heat storage material causes a solid phase to solid phase state phase transition when a temperature of the storage battery reaches the phase transition temperature to maintain the temperature of the storage battery at the phase transition temperature.

Abstract: A heat storing system includes: a heat source that emits heat to a first thermal medium; and a heat storing unit. The heat storing unit includes a heat storing body container housing a heat storing body, and a thermal medium container housing a liquid phase thermal medium. The heat storing body stores or emits heat in accordance with phase change of the heat storing body. The heat storing unit is configured to conduct a cold heat emission mode in which the liquid phase thermal medium and a cooling medium exchange heat in the thermal medium container to evaporate the thermal medium such that cold heat is emitted to the cooling medium.

Abstract: A composite heat storage material includes a heat storage material and an inorganic material. The heat storage material is made of a strongly correlated electron material that stores and dissipates heat via solid-solid phase transition. The inorganic material is different from the material of the heat storage material. The heat storage material and the inorganic material are mixed. The composite heat storage material can have characteristics of both the heat storage material and the inorganic material.

Abstract: A heat storage unit or a heat storage system is a heat storage unit including: a heat storage portion having a first material with a strongly correlated electron system material; and a heat conduction portion having a second material higher in a thermal conductivity than the first material and being in contact with the heat storage portion. The heat storage unit may have a laminated structure in which the heat storage portion and the heat conduction portion are alternately laminated on each other. For example, a metal-insulator phase transition material or a transition metal oxide may be used as the strongly correlated electron system material. The second material may be metal or ceramics.

Abstract: A heat storage system has a heat source that generates heat and radiates the heat to a first heat medium and a heat storage body that stores heat. The heat storage body changes to a first phase in a solid state when a temperature of the heat storage body is lower than or equal to a phase transition temperature, and changes to a second phase in a solid state when a temperature of the heat storage body exceeds the phase transition temperature. The heat storage body stores or radiates heat due to a phase transition between the first phase and the second phase. A heat storage mode in which the heat storage body stores heat of the first heat medium and a heat radiation mode in which the heat storage body radiates the heat stored in the heat storage body to a heat transfer target are switchable.

Abstract: An energy management system is applied to a vehicle having a first power source, a first converter, an electricity storage part, and a second power source. The energy management system has a second converter, a heat storage part, a mode switching part, and a controller. The mode switching part switches between a heat storage mode and a heat radiation mode. The heat storage part changes to a first phase in a solid state when a temperature of the heat storage part is lower than or equal to a phase transition temperature, and changes to a second phase in a solid state when a temperature of the heat storage part exceeds the phase transition temperature. The controller controls the operations of the second converter and the mode switching part based on at least one of an electricity storage condition of the electricity storage part and a conversion condition of the first converter.

Abstract: A heat storing system includes: a heat source that emits heat to a first thermal medium; and a heat storing unit. The heat storing unit includes a heat storing body container housing a heat storing body, and a thermal medium container housing a liquid phase thermal medium. The heat storing body stores or emits heat in accordance with phase change of the heat storing body. The heat storing unit is configured to conduct a cold heat emission mode in which the liquid phase thermal medium and a cooling medium exchange heat in the thermal medium container to evaporate the thermal medium such that cold heat is emitted to the cooling medium.

Abstract: A visible-light-responsive photocatalyst powder includes a tungsten oxide powder. The tungsten oxide powder has color whose a* is ?5 or less, b* is ?5 or more, and L* is 50 or more when the color of the powder is expressed by an L*a*b* color system. Further, the tungsten oxide powder has a BET specific surface area in a range of 11 to 820 m2/g.

Abstract: A heat exchanger has (i) a first passage in which a first fluid flows, (ii) a heat storage body that is thermally connected to the first passage and stores a warm heat or a cold heat, and (iii) a second passage that is thermally connected to both of the first passage and the heat storage body, the second passage in which a second fluid flows. The heat storage body changes to a first phase in a solid state when a temperature of the heat storage body is lower than or equal to a phase transition temperature, and changes to a second phase in a solid state when the temperature of the heat storage body exceeds the phase transition temperature. The heat storage body stores or dissipates heat depending on a phase transition between the first phase and the second phase.

Abstract: In one embodiment, a hydrophilic member includes a substrate having a surface and particles existing at least on the surface of the substrate. The particles are constituted of at least one selected from tungsten oxide particles and tungsten oxide composite particles. The substrate surface on which the particles exist has an arithmetic mean roughness Ra in the range of 1 nm to 1000 nm with a reference length of 100 ?m, and exhibits hydrophilicity independently of light.

Abstract: In one embodiment, an aqueous dispersion liquid contains at least one particles selected from tungsten oxide particles and tungsten oxide composite particles. A mean primary particle diameter (D50) of the particles is in the range of 1 nm to 400 nm. In the aqueous dispersion liquid, concentration of the particles is in the range of 0.1 mass % to 40 mass %, and pH is in the range of 1.5 to 6.5. The aqueous dispersion liquid excels in dispersibility of particles and capable of maintaining good liquidity for a long period.

Abstract: Provided is a composition which maintains apigenin stably. The present invention provides the composition containing apigenin at 3 ppm or more and dibutylhydroxytoluene, wherein the mass ratio of the content of apigenin relative to the content of dibutylhydroxytoluene is 1 or greater, or the pH value is less than 7. Also provided is a method for preparing an apigenin-containing composition, the method including combining 3 ppm or more of apigenin with dibutylhydroxytoluene so that the mass ratio of the content of apigenin relative to the content of dibutylhydroxytoleune is 1 or greater, or including adjusting the ph of the composition to a value less than 7.

Abstract: In one embodiment, a hydrophilic member includes a substrate having a surface and particles existing at least on the surface of the substrate. The particles are constituted of at least one selected from tungsten oxide particles and tungsten oxide composite particles. The substrate surface on which the particles exist has an arithmetic mean roughness Ra in the range of 1 nm to 1000 nm with a reference length of 100 ?m, and exhibits hydrophilicity independently of light.

Abstract: In one embodiment, an antiviral material includes at least one microparticles selected from tungsten oxide microparticles and tungsten oxide composite microparticles. The microparticles have an inactivation effect R of 1 or more expressed by [R=log C?log A], when there is evaluated a virus titer by inoculating on a specimen to which the microparticles are adhered, at least one virus selected from a low pathogenic avian influenza virus (H9N2), a high pathogenic avian influenza virus (H5N1) and a swine influenza virus, and irradiating the specimen with visible light having a wavelength of 380 nm or more and illuminance of 6000 lx. for 24 hours.

Abstract: In one embodiment, an aqueous dispersion liquid contains at least one particles selected from tungsten oxide particles and tungsten oxide composite particles. A mean primary particle diameter (D50) of the particles is in the range of 1 nm to 400 nm. In the aqueous dispersion liquid, concentration of the particles is in the range of 0.1 mass % to 40 mass %, and pH is in the range of 1.5 to 6.5. The aqueous dispersion liquid excels in dispersibility of particles and capable of maintaining good liquidity for a long period.

Abstract: In one embodiment, an antiviral material includes at least one microparticles selected from tungsten oxide microparticles and tungsten oxide composite microparticles. The microparticles have an inactivation effect R of 1 or more expressed by [R=log C?log A], when there is evaluated a virus titer by inoculating on a specimen to which the microparticles are adhered, at least one virus selected from a low pathogenic avian influenza virus (H9N2), a high pathogenic avian influenza virus (H5N1) and a swine influenza virus, and irradiating the specimen with visible light having a wavelength of 380 nm or more and illuminance of 6000 1× for 24 hours.

Abstract: In one embodiment, an aqueous dispersion liquid contains at least one particles selected from tungsten oxide particles and tungsten oxide composite particles. A mean primary particle diameter (D50) of the particles is in the range of 1 nm to 400 nm. In the aqueous dispersion liquid, concentration of the particles is in the range of 0.1 mass % to 40 mass %, and pH is in the range of 1.5 to 6.5. The aqueous dispersion liquid excels in dispersibility of particles and capable of maintaining good liquidity for a long period.

Abstract: In one embodiment, an aqueous dispersion liquid contains at least one particles selected from tungsten oxide particles and tungsten oxide composite particles. A mean primary particle diameter (D50) of the particles is in the range of 1 nm to 400 nm. In the aqueous dispersion liquid, concentration of the particles is in the range of 0.1 mass % to 40 mass %, and pH is in the range of 1.5 to 6.5. The aqueous dispersion liquid excels in dispersibility of particles and capable of maintaining good liquidity for a long period.

Abstract: In one embodiment, an aqueous dispersion liquid contains at least one particles selected from tungsten oxide particles and tungsten oxide composite particles. A mean primary particle diameter (D50) of the particles is in the range of 1 nm to 400 nm. In the aqueous dispersion liquid, concentration of the particles is in the range of 0.1 mass % to 40 mass %, and pH is in the range of 1.5 to 6.5. The aqueous dispersion liquid excels in dispersibility of particles and capable of maintaining good liquidity for a long period.

Abstract: In one embodiment, an antiviral material includes at least one microparticles selected from tungsten oxide microparticles and tungsten oxide composite microparticles. The microparticles have an inactivation effect R of 1 or more expressed by [R=logC?logA], when there is evaluated a virus titer by inoculating on a specimen to which the microparticles are adhered, at least one virus selected from a low pathogenic avian influenza virus (H9N2), a high pathogenic avian influenza virus (H5N1) and a swine influenza virus, and irradiating the specimen with visible light having a wavelength of 380 nm or more and illuminance of 6000 1× for 24 hours.