With plain tube heat exchangers, flow separations can occur which stimulate the pipes to ski. This in turn leads to material fatigue. By attaching 120 degrees offset triangular ribs, which extend in the longitudinal direction of the tubes, the detachment points can be fixed symmetrically on the tube.....
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A novel treatment of Alzheimer´s disease based on an antibody against the NITRATED form of Amyloid-beta42, thus avoiding the side effects that have been observed in other approaches.
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The invention concerns an energy storage device with at least one electrochemical cell. The cell includes a negative electrode and a positive electrode in contact with an electrolyte that includes a lead salt in an acidic solution.
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