摘要:
The invention relates to the use of special ascorbic acid derivatives for dyeing keratinous fibers or as a direct dye for producing an agent for dyeing keratinous fibers, and to methods for dyeing keratinous fibers, especially human hair.
摘要:
The invention relates to a method for optically sensing a chromatographic specimen (3), wherein a specimen plate (2) having the specimen (3) is illuminated with light of a first illuminating device (13) and the light emitted by the specimen plate (2) is sensed by an optical detector device (15) that senses in cells or over an area, and wherein a second illuminating device (14) is preferably first activated in a preparation step. In a subsequent first measurement step, the specimen plate (2) is displaced in a first displacement direction in relation to the detector device (15) and illuminated by means of the first illuminating device (13), and a first measurement image of the specimen plate (2) is recorded. In a second measurement step following the first measurement step, the specimen plate (2) is displaced in a second displacement direction in relation to the detector device (15) and illuminated by means of the second illuminating device (14), and a second measurement image of the specimen plate (2) is recorded. The invention further relates to a device (1) for performing said method.
摘要:
The invention relates to the use of α-amino acid derivatives for improving the solubility of poorly soluble substances in water or aqueous solutions and to mixtures and preferred preparations.