Abstract: This invention concerns a method for preparing an aqueous solution of perfumes or like substances. This method includes mixing in an aqueous medium an active base and saponins or their equivalents. In the resulting solution the perfume is contained in micro-reservoirs which, after being applied to the skin, provide a prolonged olfactory action without modification of the initial scent. This invention is particularly applicable in the perfume industry and in cosmetology.

Abstract: The object of the invention is to propose a novel biomarker for stress states, which biomarker is highly meaningful and capable of enabling quantitative measurements to be made of stress levels. To do this, it has been found, surprisingly, that the air at the end of a person's breathing out, known as “alveolar” air, contains fluorine compounds when that person has been subjected to various stress states. More precisely, the present invention provides components based on fluorine compounds, in particular fluorinated chloroalkanes, used as biomarkers of stress states.

Abstract: The invention concerns an image acquisition apparatus comprising a UV radiation source (29) capable of making fluorescent supports (1) whereof the images are to be acquired, a window (21) transparent to UV and visible light, typically rectangular, for receiving an image support to be acquired, a linear sensor (31) whereof the length is preferably substantially equal to the width of the window receiving a support and means (23) driving the sensor and, preferably the UV radiation source parallel to one of the edges of the window (21) receiving an image support. The invention is mainly applicable to image acquisition for revealing a chemical or physical phenomenon. The invention is mainly applicable to planar chromatography or layer chromatography.

Abstract: The object of the invention is to propose a novel biomarker for stress states, which biomarker is highly meaningful and capable of enabling quantitative measurements to be made of stress levels. To do this, it has been found, surprisingly, that the air at the end of a person's breathing out, known as “alveolar” air, contains fluorine compounds when that person has been subjected to various stress states. More precisely, the present invention provides components based on fluorine compounds, in particular fluorinated chloroalkanes, used as biomarkers of stress states.