Abstract: Specific activity of radionuclides contained in the shielding composite building materials and building components, which are based on aggregates, cement and water or on aggregates and epoxy resin, is for radionuclide Ra-226 lower than 5 Bq/kg, for radionuclide Th-228 lower than 5 Bq/kg, and for radionuclide K-40 lower than 50 Bq/kg. Aggregates and mineral compounds of cement may be formed by materials from Paleozoic geological formations.

Abstract: The invention concerns a device for generation of ion network for water treatment in tanks, especially for reduction of cloud and for stabilization of water surfaces, where the device is arranged on a floating body equipped with a drive for initiation of mutual motion of the floating body and water, whereas the floating body is equipped with an ejector and at least one source of electrolytically and/or photocatalytically treated water connected with an outlet (9) that leads into ejection and/or ejected water of an ejector. Eventually, an inlet of chemical agents (11) and/or an inlet of biological agents (12), an inlet of oxidation agent (13) or an inlet of air (14) lead into ejection and/or ejected water of the ejector.

Abstract: The invention relates to an accelerator pedal module for controlling the power of a driving engine having a pedal lever held rotatably about a pivot axis by means of a pivot connection on a bearing block, which pedal lever can be made to strike an associated bearing block stop by at least one pedal lever stop. In the region of the pedal lever stop and/or the bearing block stop, elasticities are present such that during a relative rotary motion executed about the pivot axis between the pedal lever and the bearing block to establish the pivot connection, the pedal lever stop slides past the bearing block stop because of elastic deformations and after springing back engages the bearing block stop from behind.

Abstract: The invention relates to an accelerator pedal module for controlling the power of a driving engine having a pedal lever held rotatably about a pivot axis by means of a pivot connection on a bearing block, which pedal lever can be made to strike an associated bearing block stop by at least one pedal lever stop. In the region of the pedal lever stop and/or the bearing block stop, elasticities are present such that during a relative rotary motion executed about the pivot axis between the pedal lever and the bearing block to establish the pivot connection, the pedal lever stop slides past the bearing block stop because of elastic deformations and after springing back engages the bearing block stop from behind.