Abstract: A pulp-filter arrangement (1) comprises a rotatable drum (10) and a non-rotating valve arrangement (30). The rotatable drum (10) has a cylindrical water-permeable pulp-supporting shell (14), a plurality of drain pipes (16) and a rotating hollow shaft (18). The plurality of drainpipes (16) connects the rotating hollow shaft (18) with a collecting channel (22) situated radially directly inside the cylindrical water-permeable pulp-supporting shell (14). The non-rotating valve arrangement (30) is disposed within the rotating hollow shaft (18) for sealing off the rotating hollow shaft (18) from a radially inner outlet (24) of the drain pipes (16) when respective radially inner outlet (24) is situated within a sealed zone. The non-rotating valve arrangement (30) is further arranged to, in a transition zone immediately following the sealed zone, open a throttled passage between the rotating hollow shaft (18) and the radially inner outlet (24).

Abstract: A computer node (100) connected to a network (N) is associated with a collection of data files (F1, . . . , Fm) adapted to be supplied to user terminals (T1, T2) for playback/display therein. The node (100) receives user requests (R) from user terminals (T1, T2) via a request input interface (110). Each request (R) identifies a requested data file (F1) in the collection of data files (F1, . . . , Fm). In response to and based on each such request (R), a control unit (120) derives at least two basic request components (r1, r2, r3). Each basic request component (r1, r2, r3) reflects a respective set of features characterizing specific aspects of a playback/display capacity of the user terminal (T1) from which the user request (R) was originated. Based on the at least two basic request components (r1, r2, r3), the control unit (120) also executes a playback/display capacity algorithm containing at least two consecutive steps.