Abstract: The invention relates to a radiographic device and method of servoing an X-ray source (800) in a radiography device comprising a MOS-type image sensor (810) with pixels provided with separate read and refreshment commands, respectively, in which, during a radiography operation, read commands of a plurality of image sensor pixels are called repeatedly, while maintaining a source of X-rays power-supplied, so as to establish, in response to each reading, at least one image acquisition characteristic, and in which the emission of X-rays is interrupted when the image acquisition characteristic corresponds to a preset image acquisition characteristic.

Abstract: The invention relates to a radiographic device and method of servoing an X-ray source (800) in a radiography device comprising a MOS-type image sensor (810) with pixels provided with separate read and refreshment commands, respectively, in which, during a radiography operation, read commands of a plurality of image sensor pixels are called repeatedly, while maintaining a source of X-rays power-supplied, so as to establish, in response to each reading, at least one image acquisition characteristic, and in which the emission of X-rays is interrupted when the image acquisition characteristic corresponds to a preset image acquisition characteristic.

Abstract: A spinning-twisting machine with a hollow spindle, particularly for the production of fancy yarns, includes a drawing frame for an assembly of fibers. A drawing roller is contained in the drawing frame and it is notched at spaced locations around its circumferential surface for suppressing, locally and temporarily, the nip between a pair of drawing rollers. An assembly of fibers is passed between the drawing rollers and then through a hollow spindle where a covering yarn is wrapped around the assembly of fibers. Take-up cylinders draw the combined fancy yarn through the spindle at a peripheral speed greater than the speed of feed rollers supplying the assembly of fibers to the drawing rollers.