摘要:
An ultraviolet radiation detector 10, detecting an ultraviolet radiation transmitted through or reflected from a measurement sample 15 from a light beam including at least the ultraviolet radiation, is characterized by spectral means 19 for spectrally splitting the ultraviolet radiation from the light beam and photodetection means 20 for detecting the ultraviolet radiation spectrally split by the spectral means 19, the photodetection means 20 including a photoelectric surface detecting only the ultraviolet radiation and formed of an element selected from In, Ga, N, Al, O and Cs.
摘要:
An ultraviolet radiation detector 10, detecting an ultraviolet radiation transmitted through or reflected from a measurement sample 15 from a light beam including at least the ultraviolet radiation, is characterized by spectral means 19 for spectrally splitting the ultraviolet radiation from the light beam and photodetection means 20 for detecting the ultraviolet radiation spectrally split by the spectral means 19, the photodetection means 20 including a photoelectric surface detecting only the ultraviolet radiation and formed of an element selected from In, Ga, N, Al, O and Cs.
摘要:
A skin substitute membrane includes a surface on one side including a groove-shaped depressed portion and a planar portion, the depressed portion having a cross section having a chamfered V-letter shape, the surface having an arithmetic mean roughness Sa of more than or equal to 10 μm to less than or equal to 50 μm. The depressed portion has a width of more than or equal to 50 μm to less than or equal to 500 μm and a depth of more than or equal to 30 μm to less than or equal to 150 μm. A spectral transmittance for light of more than or equal to 290 nm to less than or equal to 400 nm in wavelength is more than or equal to 50% and less than or equal to 100%.
摘要:
A method and apparatus for evaluating an ultraviolet radiation protection effect in a measurement sample is used for evaluating SPF (Sun Protection Factor). First, a temporal change of the spectral transmission spectrum in the measurement sample within a predetermined light wavelength range at predetermined wavelength intervals is measured. Second, a correlation between a light irradiating time and minimal erythema doses by predetermined lime intervals based on the temporal change of the spectral transmission spectrum is set. Third a predicted in vitro SPF in the measurement sample using a time until an accumulated minimal erythema dose that is obtained as a time integration of the minimal erythema doses based on the correlation obtained in the second step reaches 1 MED (Minimum Erythema Dose) is calculated.
摘要:
An evaluation method for evaluating the ultraviolet protection effect of a measurement sample applied on a substrate includes a first step of measuring, at predetermined wavelength intervals, a change over time of a spectral transmission spectrum of the measurement sample within a predetermined wavelength range by irradiating light from a light source that includes ultraviolet light, visible light, and infrared light under a predetermined irradiation condition; a second step of establishing, based on the change over time of the spectral transmission spectrum, a correlation between a light irradiation time and an erythema effective dose per unit time, which is obtained by dividing an erythema effective dose of the measurement sample by an erythema effective dose per 1 MED; and a third step of calculating an in vitro rSPF predictive value for the measurement sample on the basis of a time until a cumulative erythema effective dose, which is obtained through time integration based on the correlation, reaches 1 MED.
摘要:
A skin substitute membrane includes a surface on one side including a groove-shaped depressed portion and a planar portion, the depressed portion having a cross section having a chamfered V-letter shape, the surface having an arithmetic mean roughness Sa of more than or equal to 10 μm to less than or equal to 50 μm. The depressed portion has a width of more than or equal to 50 μm to less than or equal to 500 μm and a depth of more than or equal to 30 μm to less than or equal to 150 μm. A spectral transmittance for light of more than or equal to 290 nm to less than or equal to 400 nm in wavelength is more than or equal to 50% and less than or equal to 100%.
摘要:
An evaluating method for evaluating an ultraviolet radiation protection effect in a measurement sample includes a first step of measuring a temporal change of the spectral transmission spectrum in the measurement sample within a predetermined wavelength range at predetermined wavelength intervals by irradiating with light including ultraviolet radiation from a light source under a predetermined light irradiating condition, a second step of setting a correlation between a light irradiating time and minimal erythema doses by predetermined time intervals based on the temporal change of the spectral transmission spectrum obtained in the first step, and a third step of calculating a predicted in vitro SPF in the measurement sample using a time until an accumulated minimal erythema dose that is obtained as a time integration of the minimal erythema doses based on the correlation obtained in the second step reaches 1 MED.
摘要:
An evaluation method for evaluating the ultraviolet protection effect of a measurement sample applied on a substrate includes measuring, at predetermined wavelength intervals, a change over time of a spectral transmission spectrum of the measurement sample within a predetermined wavelength range by irradiating light from a light source that includes ultraviolet light, visible light, and infrared light under a predetermined irradiation condition; establishing, based on the change over time of the spectral transmission spectrum, a correlation between a light irradiation time and an erythema effective dose per unit time, which is obtained by dividing an erythema effective dose of the measurement sample by an erythema effective dose per 1 MED; and calculating an in vitro rSPF predictive value for the measurement sample on the basis of a time until a cumulative erythema effective dose, which is obtained through time integration based on the correlation, reaches 1 MED.
摘要:
A skin substitute membrane includes a surface on one side including a groove-shaped depressed portion and a planar portion, the depressed portion having a cross section having a chamfered V-letter shape, the surface having an arithmetic mean roughness Sa of more than or equal to 10 μm to less than or equal to 50 μm. The depressed portion has a width of more than or equal to 50 μm to less than or equal to 500 μm and a depth of more than or equal to 30 μm to less than or equal to 150 μm. A spectral transmittance for light of more than or equal to 290 nm to less than or equal to 400 nm in wavelength is more than or equal to 50% and less than or equal to 100%.
摘要:
A magnesium aluminometasilicate coated composite powder which comprises magnesium aluminometasilicate, or magnesium aluminometasilicate and at least one other powder coated on a surface of a core powder and which is usable in, for example, a skin treatment agent, decodorant, and oral composition.