Abstract: It is an object of the present invention to provide an activated carbon having a high mechanical strength and an excellent filtration capacity for trihalomethanes. An activate carbon in which a pore volume A of pores with a size of 1.0 nm or less, of pore volumes calculated by the QSDFT method from a nitrogen desorption isotherm, is 0.23 cc/g or more and 0.25 cc/g or less, a pore volume B of pores with a size of 1.5 nm or more and 2.5 nm or less, of pore volumes calculated by the QSDFT method from the nitrogen desorption isotherm, is more than 0.12 cc/g and 0.19 cc/g or less, and the activated carbon has a specific surface area of 1000 m2/g or more and 1200 m2/g or less.

Abstract: A radio wave environment measurement device includes: a multi-copter type unmanned flight vehicle configured to move in midair; a polyhedron attached to an airframe of the multi-copter type unmanned flight vehicle, the polyhedron having a plurality of surfaces; and an antenna provided on each of the plurality of surfaces of the polyhedron.

Abstract: A radio wave environment analyzer includes a memory that holds location information on a radio transmitter disposed in a target area where a moving body is present and location information on a reference point at which a radio wave from the radio transmitter is received, and a processor that obtains (i) a first reception intensity of the radio wave at the reference point when the moving body is present at an initial location and (ii) a plurality of second reception intensities of the radio wave at the reference point respectively corresponding to cases where the moving body is present at a plurality of movement locations. The processor selects one or more locations out of the plurality of movement locations to execute a simulation of a radio wave environment in the target area, based on the first reception intensity and the plurality of second reception intensities.

Abstract: A throughput estimation system according to the present invention comprises, in a space in which a first communication device that generates a beacon is installed, a radio wave receiver having a plurality of antennas that receive the beacon transmitted from the first communication device, and a processor that processes a reception measurement result from the radio wave receiver. On the basis of beacon reception power received by each of the plurality of antennas and the number of the plurality of antennas that detected the beacon, the processor estimates the throughput between the first communication device and a second communication device assumed to be installed in the vicinity of the site at which the beacon was received within the space.

Abstract: A radio wave measurement method used in a transmitter and a receiver, includes transmitting a radio wave from the transmitter, receiving the radio wave by the receiver through a scatterer, measuring, a plurality of times, reception qualities of the radio waves received by the reception antenna of the main reception surface and received respectively by the reception antennas of the plurality of sub-reception surfaces while changing a position of the receiver, and determining a position of the receiver when the reception quality of the radio wave corresponding to the reception antenna of the main reception surface and the reception qualities of the radio waves corresponding to the plurality of sub-reception surfaces satisfy a predetermined condition as a measurement position used for derivation of a material constant of the scatterer.

Abstract: A radio wave environment measurement device includes: a multi-copter type unmanned flight vehicle configured to move in midair; a polyhedron attached to an airframe of the multi-copter type unmanned flight vehicle, the polyhedron having a plurality of surfaces; and an antenna provided on each of the plurality of surfaces of the polyhedron.

Abstract: A radio wave environment analyzer includes a memory that holds location information on a radio transmitter disposed in a target area where a moving body is present and location information on a reference point at which a radio wave from the radio transmitter is received, and a processor that obtains (i) a first reception intensity of the radio wave at the reference point when the moving body is present at an initial location and (ii) a plurality of second reception intensities of the radio wave at the reference point respectively corresponding to cases where the moving body is present at a plurality of movement locations. The processor selects one or more locations out of the plurality of movement locations to execute a simulation of a radio wave environment in the target area, based on the first reception intensity and the plurality of second reception intensities.

Abstract: A radio wave measurement method used in a transmitter and a receiver, includes transmitting a radio wave from the transmitter, receiving the radio wave by the receiver through a scatterer, measuring, a plurality of times, reception qualities of the radio waves received by the reception antenna of the main reception surface and received respectively by the reception antennas of the plurality of sub-reception surfaces while changing a position of the receiver, and determining a position of the receiver when the reception quality of the radio wave corresponding to the reception antenna of the main reception surface and the reception qualities of the radio waves corresponding to the plurality of sub-reception surfaces satisfy a predetermined condition as a measurement position used for derivation of a material constant of the scatterer.

Abstract: The present invention is directed to an oral composition having an improved ability to incorporate fluoride ions into tooth enamel and an enhanced remineralization effect.

Abstract: The present invention relates to an oral composition showing increased adsorption performance of an oil-soluble medicinal ingredient such as glycyrrhetinic acid and tocopherol to the gums and oral mucosa. The invention relates to an oral composition comprising the following ingredients (A), (B), (C), and (D): (A) 0.01 mass % or more and 2.5 mass % or less of one or more oil-soluble medicinal ingredients selected from the group consisting of glycyrrhetinic acid, tocopherol, and a tocopherol derivative; (B) 4 mass % or more and 30 mass % or less of a higher alcohol having 12 or more and 22 or less carbon atoms comprising (b1) cetanol and (b2) stearyl alcohol; (C) 0.

Abstract: The present invention relates to an oral composition having improved ability of incorporating fluoride ions into tooth enamel and an enhanced remineralization effect. That is, the present invention provides an oral composition comprising an ingredient (A): 0.005 mass % or more and 2 mass % or less, in terms of fluorine atoms, of one or more fluoride ion-supplying compounds selected from the group consisting of sodium fluoride, ammonium fluoride, potassium fluoride, sodium monofluorophosphate, and tin fluoride; an ingredient (B): 4 mass % or more and 30 mass % or less of a higher alcohol having 12 or more and 22 or less carbon atoms comprising (b1) cetanol and (b2) stearyl alcohol; an ingredient (C): 0.

Abstract: The present invention relates to an oral composition showing increased adsorption performance of an oil-soluble medicinal ingredient such as glycyrrhetinic acid and tocopherol to the gums and oral mucosa. The invention relates to an oral composition comprising the following ingredients (A), (B), (C), and (D): (A) 0.01 mass % or more and 2.5 mass % or less of one or more oil-soluble medicinal ingredients selected from the group consisting of glycyrrhetinic acid, tocopherol, and a tocopherol derivative; (B) 4 mass % or more and 30 mass % or less of a higher alcohol having 12 or more and 22 or less carbon atoms comprising (b1) cetanol and (b2) stearyl alcohol; (C) 0.