Abstract: The invention relates to a method and an assembly having a lamp which radiates UV light, radiating the UV light in a main propagation direction, wherein at least one surface which is permanently illuminated by the UV light of the lamp when the lamp is switched on has a region coated with a material which absorbs UV radiation, the shape and dimensions of the coated region being selected such that all the UV radiation impinging on the illuminated surface with an irradiation intensity above a limit value impinges on the coated region.

Abstract: A lamp having a UV light source arranged in a housing and a light exit opening, wherein the housing has at least one further flow-through opening which is connected to the light exit opening via a flow channel, and the light exit opening connects an interior space of the housing to an exterior space in a flow-through manner.

Abstract: The invention is directed to a system for preventing or minimizing the spread of viruses, and to the prevention or minimization of the spread of viruses in indoor air, including one or more radiation sources (10) in a room which divide the room into smaller segments using UV-C light walls, a sensor system for detecting a movement or a presence of one or more persons (P) in the room, and a controller (16) that is designed to at least partially switch the one or more radiation sources (10) on or off as a function of at least the presence of the person (P).

Abstract: The present invention relates to a method for the preparation of a strain-adapted vaccine specific for a bacterial strain, comprising the steps of: (a) genetically engineering a bacterial strain obtained from a subject, wherein said genetic engineering comprises introducing a nucleic acid molecule encoding a fusion protein, wherein the fusion protein comprises a bacterial membrane protein fused to at least one affinity tag, (b) growing the genetically engineered bacterial strain obtained in step (a) in solution, (c) isolating membrane vesicles from the growth culture of step (b) by affinity purification using the affinity tag, and (d) formulating the membrane vesicles isolated in step (c) into a strain-adapted vaccine. The present invention further relates to a nucleic acid molecule encoding a fusion protein comprising a bacterial membrane protein fused to at least one affinity tag and a kit comprising said fusion protein.