Abstract: A sintered friction material, in which a content of a copper component is 0.5 mass % or less, is provided. The sintered friction material includes a titanate and a metal material other than copper, as a matrix. A content of the metal material other than copper is 10.0 volume % to 34.0 volume %. A method for manufacturing a sintered friction material is provided. The method includes a mixing step of mixing raw materials containing a titanate and a metal material other than copper, a molding step of molding the raw materials mixed in the mixing step, and a sintering step of sintering, at 900° C. to 1300° C., a molded product molded in the molding step. In the sintered friction material, the titanate and the metal material other than copper form a matrix, and a content of the metal material other than copper is 10.0 volume % to 34.0 volume %.

Abstract: This portable apparatus comprises a housing having a circuit built-in, and an input key, an ultraviolet receptive opening and a display, which are combined with the housing as one body. An ultraviolet sensor is provided in the interior of the ultraviolet receptive opening. This portable apparatus comprises means for receiving characteristic data about a characteristic of a user's skin against a suntan from the input key and measurement data about an ultraviolet ray quantity from the ultraviolet sensor, for predicting a user's suntanned skin condition from these data, and for generating image data for displaying an image about the prediction of user's suntanned skin condition. The image, which is based on image data generated by this means, is displayed on the display, making it possible for the user to confirm the user's skin condition.

Abstract: This portable apparatus comprises a housing having a circuit built-in, and an input key, an ultraviolet receptive opening and a display, which are combined with the housing as one body. An ultraviolet sensor is provided in the interior of the ultraviolet receptive opening. This portable apparatus comprises means for receiving characteristic data about a characteristic of a user's skin against a suntan from the input key and measurement data about an ultraviolet ray quantity from the ultraviolet sensor, for predicting a user's suntanned skin condition from these data, and for generating image data for displaying an image about the prediction of user's suntanned skin condition. The image, which is based on image data generated by this means, is displayed on the display, making it possible for the user to confirm the user's skin condition.