Abstract: The invention relates to a method for operating a fuel cell system, wherein the fuel cell system is controlled in accordance with a system-specific digital twin (14) that represents the fuel cell system. According to the invention, the digital twin (14) controls the fuel cell system in at least two different active operating states (16, 18) of the fuel cell system.

Abstract: An ammunition box that is intended to equip a magazine of a gun turret. The box is substantially parallelepipedic and comprises a pivoting handle formed by two arms that are articulated on the side walls and are connected by a grip allowing the extraction and transportation of the box. The handle comprises a protuberance disposed in the vicinity of at least one of the articulated arms and in the vicinity of its pivot pin on the walls, which protuberance is intended to engage with at least one guide groove provided on the magazine of the turret. A further aim of the invention is a magazine capable of receiving such a box.

Abstract: A method of inserting guilloche patterns in a document, each guilloche pattern being capable of encoding variable alphanumeric data ensuring a different aspect at each guilloche pattern so as to render said document secure using an operation of determining an insertion intensity of each guilloche pattern previously generated on the basis of a mid-gray level of the document near said guilloche pattern. A device for implementing this insertion method. The method further provides for extracting guilloche patterns from a secure document likely to be degraded by determining a contrast card of at least one portion of the secure document that includes the guilloche patterns, identifying, on this contrast card an optimal percolation trajectory, and extracting the optimal percolation trajectory, said trajectory corresponding to the guilloche pattern.

Abstract: An ammunition box that is intended to equip a magazine of a gun turret. The box is substantially parallelepipedic and comprises a pivoting handle formed by two arms that are articulated on the side walls and are connected by a grip allowing the extraction and transportation of the box. The handle comprises a protuberance disposed in the vicinity of at least one of the articulated arms and in the vicinity of its pivot pin on the walls, which protuberance is intended to engage with at least one guide groove provided on the magazine of the turret. A further aim of the invention is a magazine capable of receiving such a box.

Abstract: A method of inserting guilloche patterns in a document, each guilloche pattern being capable of encoding variable alphanumeric data ensuring a different aspect at each guilloche pattern so as to render said document secure using an operation of determining an insertion intensity of each guilloche pattern previously generated on the basis of a mid-gray level of the document near said guilloche pattern. A device for implementing this insertion method. The method further provides for extracting guilloche patterns from a secure document likely to be degraded by determining a contrast card of at least one portion of the secure document that includes the guilloche patterns, identifying, on this contrast card an optimal percolation trajectory, and extracting the optimal percolation trajectory, said trajectory corresponding to the guilloche pattern.

Abstract: The invention is based on a fuel cell device which is provided to be operated with a natural gas, having a fuel cell unit (12) and an anode gas processor (14) arranged upstream of the fuel cell unit (12), which anode gas processor is provided to prepare the natural gas for use in the fuel cell unit (12) and which comprises a desulfurization unit (18), which is provided to desulfurize the natural gas, an oxidation unit (20), which is provided to perform partial oxidation, and a reformer unit (22), which is provided to produce at least one fuel gas. It is proposed that the fuel cell device comprise a recirculation unit (16), which is provided to supply at least a proportion of an anode waste gas from the fuel cell unit (12) to the fuel cell device (10).

Abstract: The invention is based on a fuel cell device which is provided to be operated with a natural gas, having a fuel cell unit (12) and an anode gas processor (14) arranged upstream of the fuel cell unit (12), which anode gas processor is provided to prepare the natural gas for use in the fuel cell unit (12) and which comprises a desulfurization unit (18), which is provided to desulfurize the natural gas, an oxidation unit (20), which is provided to perform partial oxidation, and a reformer unit (22), which is provided to produce at least one fuel gas. It is proposed that the fuel cell device comprise a recirculation unit (16), which is provided to supply at least a proportion of an anode waste gas from the fuel cell unit (12) to the fuel cell device (10).

Abstract: A fuel cell device having a fuel cell unit (12) which has at least one anode (14) and at least one cathode (16), having at least one anode gas processor (18) which has at least one first heat exchanger (20), and having at least one cathode gas processor (22) which has at least one second heat exchanger (24). The at least one first heat exchanger (20) and the at least one second heat exchanger (24) each take a helical form.