Abstract: The purpose of the present disclosure is to provide a computer, an information processing method, and a network system by which information relating to a trend of a mental or physical state of a subject can be acquired more easily than before. Provided is a computer including: a memory configured to store first data obtained from a strand of hair acquired from a subject and second data obtained from a specimen acquired from the subject, the specimen being different in acquisition time from the strand of hair; and a processor configured to generate a trend of a mental or physical state of the subject based on the first data and the second data.

Abstract: The present invention relates to a small fuel cell and a small fuel cell stack each allowing for improved output. Conventionally, in a direct methanol fuel cell, carbon dioxide gas produced at an anode electrode side is exhausted together with a methanol aqueous solution. From the methanol aqueous solution, the carbon dioxide gas is separated, and then the methanol aqueous solution is reused as fuel. In this case, a liquid-gas separation device needs to be provided additionally, which results in a large fuel cell with an increased weight, disadvantageously. The present invention is made to solve such a problem by providing a fuel cell including a first unit cell having a cathode electrode, an electrolyte membrane, an anode electrode, and an anode collector layer in this order; and one or more spacers arranged on the anode collector layer.

Abstract: There is provided a fuel cell including a membrane electrode assembly having a cathode electrode, an electrolyte membrane, and an anode electrode in this order, and an anode collector layer. The anode collector layer includes a pair of first walls provided along two opposite sides. The membrane electrode assembly is fitted between the first walls such that the anode electrode faces the anode collector layer. A fuel cell layer employing the fuel cells is also provided. Preferably, the fuel cell further includes a pair of second walls formed on the pair of first walls.

Abstract: An advertisement data server includes: an URL database storing URLs different for different products and information on whether each product has been sold or not; a URL comparing unit, when accessed by a terminal, for making reference to the URL database for determining whether the corresponding product has been sold or not; an image data transmitting unit for transmitting an advertisement image to the terminal for display if the product has been sold; a time calculating unit for calculating the time period in which the advertisement image is displayed on the terminal; and a refund amount calculating unit for calculating, based on the product, the time of display of the advertisement image and on the information stored in the URL database, an amount to be returned to the owner of the terminal on behalf of viewing the advertisement image.