Abstract: The invention relates to a glazing including a glass sheet, one surface of which is covered with a conductive layer. Said glass sheet comprises, at a nonzero distance from the conductive layer, a periodic pattern of conductive elements that is suitable for increasing, for a predetermined frequency, the transmission of radiofrequency electromagnetic waves. Said periodic pattern is selected so as to have a transmission zero at a frequency of between substantially half and substantially double the frequency to be amplified.

Abstract: The invention relates to a glazing including a glass sheet, one surface of which is covered with a conductive layer. Said glass sheet comprises, at a nonzero distance from the conductive layer, a periodic pattern of conductive elements that is suitable for increasing, for a predetermined frequency, the transmission of radiofrequency electromagnetic waves. Said periodic pattern is selected so as to have a transmission zero at a frequency of between substantially half and substantially double the frequency to be amplified.

Abstract: The invention relates to a surface suitable for filtering a plurality of frequency bands, said surface including a set of separate identical basic conductive units (31) that are reproduced in a periodic arrangement on a dielectric substrate (10). The basic unit includes: a tripole consisting of three identical segments (12) that extend radially from a center (14); and two arms (32) that extend symmetrically from an intermediate point of each segment, said intermediate point being located at a common distance (Db) from the center (14) for each of the segments (12). The general directions of both arms form an angle of approximately 120° and define an arrowhead pointed toward the outside, wherein the arms (32) corresponding to two separate segments (12) do not intersect.

Abstract: The invention relates to a surface suitable for filtering a plurality of frequency bands, said surface including a set of separate identical basic conductive units (31) that are reproduced in a periodic arrangement on a dielectric substrate (10). The basic unit includes: a tripole consisting of three identical segments (12) that extend radially from a center (14); and two arms (32) that extend symmetrically from an intermediate point of each segment, said intermediate point being located at a common distance (Db) from the center (14) for each of the segments (12). The general directions of both arms form an angle of approximately 120° and define an arrowhead pointed toward the outside, wherein the arms (32) corresponding to two separate segments (12) do not intersect.

Abstract: A process and device for continuously measuring the quantity of particles spended in a liquid, which exist in at least two different physical states, such as detached or attached within the paper pulp. A separation assembly separates the particles into divisions depending on their size, and the separation assembly is continuously fed with liquid via an input pipe. A measuring and processing assembly has two channels or ducts coming from the separation assembly and are provided with translucent windows. A measurement and capture unit illuminates the windows, and at least two cameras located opposite each of the respective windows are synchronized with the illumination unit to capture, at regular intervals, an image of the windows. A system for digitizing the captured images and processing them to determine the quantity of particles for each physical states is forwarded to an output unit in a digital or analog form.