Abstract: The invention relates to a composition containing catechins found in green tea, to pharmaceutical compositions and medical devices comprising the composition and to the use of these compositions and medical devices in the treatment of coronavirus infections, especially infection with SARS-CoV-2.

Abstract: A power dual-band rotary joint simultaneously operating on two frequency bands. A and is made up of a couple of transducers, each between two rectangular waveguides, respectively operating, on bands A and B, and a nested coaxial waveguide. The nested coaxial waveguide is made up of two concentric cylindric waveguides. The transducers are conceived in such a way that only modes with azimuthal symmetry are excited. The nested coaxial waveguide dimensions are chosen so that, on band B, the TM01 mode can propagate in the circular waveguide delimited by the internal surface of the smaller cylinder. The external surface of the smaller cylinder is the internal conductor of the coaxial working on band A, while the internal surface of the bigger cylinder is the external conductor of the same coaxial. The two transducers are connected through the nested waveguide.

Abstract: Disclosed is a multiplexer that can be easily reconfigured, in the sense that the number of channels can be reduced or expanded by replacing the filters with suitable reactive loads and vice-versa. Although such loads are easy to manufacture, they are designed in such a way that the electrical characteristics of the remaining reconfigurable multiplexer maintains unaltered and additional tuning is not required. The present solution allows reducing both costs and losses of the branch by eliminating the circulators, although maintaining part of their flexibility.