Abstract: An anode inlet unit for a split fuel cell stack or two fuel cell stacks having two anode inlets. The anode inlet unit has particular application for a small vehicle that requires less power. In one embodiment, the anode inlet unit only includes three injectors. Two of the injectors provide flow control for the hydrogen gas to the two anode inlets to provide the desired turn-down ratio. For a split stack design, the two injectors may provide flow-shifting where the injection of hydrogen gas into the sub-stacks is alternated. The other injector injects a small amount of hydrogen into the cathode side of the fuel cell stack at system start-up to quickly increase the operating temperature of the system. Additionally, two valves can be provided in the unit that receive a flow of air to purge the anode side of the stack for system shut-down.

Abstract: A continuous process to oxychlorinate olefins and aromatics is described, comprising the conversion of olefins and aromatics as component (a) with oxygen and hydrogen chloride as component (b) in the presence of a solid cuprous/cupric salt catalyst in a reactor, characterized in that components (a) and (b) are fed separately from each other in spatial terms into reaction zones and regeneration zones of the reactor, where the reaction zone shows a higher concentration of the catalyst in its oxidized form at the solids entry point than at the solids exit point, and the regeneration zone shows a higher concentration of the catalyst in its reduced form at the solids entry point than at its solids exit point, and where component (a) is fed into the reaction zones and component (b) is fed into the regeneration zones.

Abstract: A method and a device for measuring dimensions of gaps and hollow spaces in motor vehicle body construction use a filler element which is introduced in a gap or a hollow space to be measured. The filler element is coupled to an ultrasonic testing device for accurately and consistently measuring the gap or hollow space.

Abstract: A method and a device for measuring dimensions of gaps and hollow spaces in motor vehicle body construction use a filler element which is introduced in a gap or a hollow space to be measured. The filler element is coupled to an ultrasonic testing device for accurately and consistently measuring the gap or hollow space.

Abstract: Measurement device for quantitatively detecting constituents of a pulp/fluid mixture for paper and/or cardboard production. The device includes at least one radiation source for irradiating the mixture in a number of definite, different wavelength ranges. The device also includes at least one sensor for measuring the intensity of radiation that has been influenced by the mixture, and at least one set of measurement electronics. Each sensor detects only one of the definite, different wavelength ranges of the radiation at a particular time.

Abstract: Process and measurement device for quantitatively detecting constituents of a pulp/fluid mixture for paper and/or cardboard production. The device includes at least one radiation source for irradiating the mixture in a number of definite, different wavelength ranges. The device also includes at least one sensor for measuring the intensity of radiation that has been influenced by the mixture, and at least one set of measurement electronics. Each sensor detects only one of the definite, different wavelength ranges of the radiation at a particular time. The process includes irradiating the mixture with at least one radiation source, the irradiation occurring in a number of definite, different wavelength ranges; and measuring the intensity of radiation that has been influenced by the mixture by at least one sensor. Each sensor detects only one of the definite, different wavelength ranges of the radiation at a particular time.

Abstract: A joint endoprosthesis has a first implant component which can be attached to a first epiphysis, and a second implant component which can be attached to a second epiphysis of two epiphyses forming a joint, with the first implant component and the second implant component each having articular surfaces for the formation of a swivel joint, and with a sliding piece being provided that in addition enables a rotational movement and a translational movement of the epiphyses with respect to each other.

Abstract: A process is disclosed for determining the vibration characteristics of a body by modal analysis. The body is made to vibrate at different frequencies and optical interference images of the body are recorded for the different frequencies. The interference images are analyzed on the basis of a mathematical/physical model, in view of the vibration characteristics at predetermined points, and the thus obtained information about the vibration characteristics of said points is subjected to a modal analysis.