Abstract: The present invention relates to an organic electroluminescent device comprising a substrate, an organic electroluminescent element, and a photocatalyst layer, wherein the organic electroluminescent element includes: a first conductive layer provided on the substrate; an organic electroluminescent layer provided on the first conductive layer; and a second conductive layer provided on the organic electroluminescent layer, wherein the photocatalyst layer covers all or part of a light-emitting region of the organic electroluminescent element, and contains a photocatalyst and a co-catalyst, and wherein an absolute value of the difference (|R1?R2|) between the refractive index (R1) of the photocatalyst and the refractive index (R2) of the co-catalyst at a wavelength of 589 nm is 0 to 0.35.

Abstract: The present invention relates to an organic electroluminescent device comprising a substrate, an organic electroluminescent element, and a photocatalyst layer, wherein the organic electroluminescent element includes: a first conductive layer provided on the substrate; an organic electroluminescent layer provided on the first conductive layer; and a second conductive layer provided on the organic electroluminescent layer, wherein the photocatalyst layer covers all or part of a light-emitting region of the organic electroluminescent element, and contains a photocatalyst and a co-catalyst, and wherein an absolute value of the difference (|R1-R2|) between the refractive index (R1) of the photocatalyst and the refractive index (R2) of the co-catalyst at a wavelength of 589 nm is 0 to 0.35.

Abstract: The device of the present invention contains a recording unit on which a plurality of words having possibilities of being misheard are recorded in a state of being classified on the basis of highness and lowness of the possibilities, a question output unit that outputs, by voice sound, a question sentence containing at least one of the words having possibilities of being misheard, an input unit that receives input of a response to the question sentence, a determining unit that determines at least whether the hearing ability of a respondent is decreased or not on the basis of the content of the response input into the input unit, and a result output unit that outputs a determination result determined by the determining unit.

Abstract: One object of the present invention is to provide a hearing test provision system capable of causing a person who has decreased hearing ability to be aware of the state in a natural way and, in consequence, capable of promoting the sale of hearing aids. The present invention contains a product presenting unit that presents products, an operating unit with which a product is selected from products presented on the product presenting unit, a database that records hearing aid affinity information which indicates affinity between a product selected by the operating unit and a hearing aid, a determining unit that determines whether to perform a hearing test on the basis of at least the hearing aid affinity information, and a hearing test conducting unit that conducts a hearing test on the basis of a determination result from the determining unit.

Abstract: An electric household appliance remote monitoring system including a smart tap to which one or two or more power plugs of electric equipment can be inserted, an electric household appliance incorporating a smart tap function, and a server is provided. The smart tap includes voltage waveform measuring means and/or current waveform measuring means and communication means. The server has a function of judging an operation state of each piece of connected electric equipment based on the voltage waveform and/or the current waveform received from the smart tap and, when detecting abnormality of the electric equipment, transmitting the detection to an external network.