Abstract: A method of determining the total body fat of a person comprising measuring a subcutaneous fat thickness at four points on the person's body, located in the right anterior part of the left mid-thigh, in the left anterior part of the right mid-thigh, in the right dorsal part navel level and in the left dorsal part at navel level, respectively, and determining a first estimate of the person's total body fat as a function of these measurements.

Abstract: A method of determining the total body fat of a person comprises the steps in which a subcutaneous fat thickness is measured at four points on the person's body, located in the right anterior part of the left mid-thigh, in the left anterior part of the right mid-thigh, in the right dorsal part navel level and in the left dorsal part at navel level, respectively, and a first estimate of the person's total body fat is then determined as a function of these measurements.

Abstract: An ultrasonic percussion device uses an ultrasonic generator attached to one end of a wire by a linking assembly which includes a radially elastically deformable sleeve (7) receiving the end of the wire and provided with a conical flared section (7B); a hole (8) provided in a member (9) integral with the generator and into which the sleeve is able to be introduced, the conical section (7B) of the sleeve (7) coming into contact with a complementary conical wall (8B) provided in the hole, and a clamping element (10) able to cooperate by screwing with the member (9) and to act against the sleeve (7); the device is particularly useful for destroying atheromata in clogged arteries.

Abstract: Ultrasonic process and apparatus for monitoring and measuring the evolution with time of physico-chemical and biological phenomena. There is plunged into the medium or media (4) to be monitored a bar (3) into which ultrasound (2) is injected in order to collect secondary echoes (F2, F3) due to numerous reflections from the lateral surface of the bar (3) brought into contact with the medium (4), one of the secondary echoes (F2) is selected and the evolution with time of the amplitude of this echo is recorded, this representing the evolution of the medium being monitored, in particular the setting of concrete or the polymerization of a resin.