Abstract: Method and flotation vessel for removing contaminants from aqueous fibrous suspension. The method includes damming up fibrous suspension at a head level above a bottom of flotation vessel, and forming a bubble flow via gas bubbles rising counter to gravity in dammed fibrous suspension, such that fibrous suspension is carried counter to ascending direction of bubble flow and contaminants are deposited on gas bubbles. Accepts, discharged in cleaned form, are carried counter to bubble flow, and contaminants and bubbles are discharged in thickened flotation foam. A flow cross-section of flotation vessel transverse to bubble flow is formed straight on at least 80% of at least one side wall, and length of side wall is at least 1.5 times greater than width of end wall. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: A circuit arrangement (1000, 2000), preferably for a coupling network component of a network node in a packet-switching data network, is disclosed which has a wide parallelization of the data packet signal by means of shift registers (60), so that it is possible to operate internally with a greatly reduced operating speed. In particular, an arrangement of the components on a single semiconductor wafer (3000, 4000) permits an especially wide bus (20), which can be constructed extremely advantageously with a surface-optimized floor plan (3000, 4000).