Abstract: The present disclosure relates to an arrangement (6) for controlling an entrance hole (2) of a beehive (1) of a beehive with bees, comprising a closure element (11) for at least partially closing the entrance hole (2). According to the present disclosure, the arrangement (6) comprises at least one identification unit (5) arrangeable or arranged on a queen bee (4), a reading unit (7) for reading out the at least one identification unit (5), wherein the reading unit (7) or at least one antenna unit (8) of the reading unit (7) is arrangeable or arranged at the entrance hole (2), and an actuation unit (12), in particular coupled with the reading unit (7), for actuating the closure element (11). Moreover, the present disclosure relates to a method for controlling an entrance hole (2) of a beehive (1).

Abstract: The invention relates to an arrangement (6) for controlling an entrance hole (2) of a beehive (1) of a beehive with bees, comprising a closure element (11) for at least partially closing the entrance hole (2). According to the invention, the arrangement (6) comprises at least one identification unit (5) arrangeable or arranged on a queen bee (4), a reading unit (7) for reading out the at least one identification unit (5), wherein the reading unit (7) or at least one antenna unit (8) of the reading unit (7) is arrangeable or arranged at the entrance hole (2), and an actuation unit (12), in particular coupled with the reading unit (7), for actuating the closure element (11). Moreover, the invention relates to a method for controlling an entrance hole (2) of a beehive (1).

Abstract: A method of making a structure having an optimized sterical shape of a material 4 comprises the steps of forming a pre-form 1 of the structure of the material 4, setting geometric boundary conditions for the material 4 being in a state in which it is able to rearrange under the influence of internal tensions in the volume of the pre-form 1 so that the material rearranges itself into the structure in a self-organized way, and transferring the rearranged material 4 into a state in which the rearrangement of the material 4 is conserved.

Abstract: An apparatus for transporting and inverting core frame parts of a nuclear reactor includes a cross beam. A horizontal shaft is supported on the cross beam. A flexion and torsion-resistant basket is disposed below the cross beam for receiving a core frame part. A bearing pivotably supports the basket on the horizontal shaft. Pulleys are attached to opposite sides of the basket at right angles relative to the shaft. Positioning drives are seated at the cross beam and deflection rollers are adjustably attached to the positioning drives. Flexible tension members each lead from a respective one of the pulleys to a respective one of the positioning drives and to a respective one of the deflection rollers. The tension members are prestressed relative to the bearing for the basket.