Abstract: Soft, strong, and low dusting tissue paper webs useful in the manufacture of soft, absorbent sanitary products such as bath tissue, facial tissue, and absorbent towels are disclosed. The tissue papers comprise fibers such as wood pulp and a non-cellulosic, water insoluble particulate filler such as kaolin clay and possess biased surface properties.

Abstract: A multi-cylinder internal combustion engine with two exhaust gas turbochargers of which one is adapted to be switched-in during the operation of the internal combustion engine by way of a switch-in valve controllable on the turbine side and by way of a check valve on the compressor side. Furthermore, a controllable blow-off valve (waste gate) is installed into a by-pass line which by-passes both turbines. The blow-off valve and the switch-in valve are controllable by a control apparatus as a function of condition magnitude of the internal combustion engine. The activation of the blow-off valve and of the switch-in valve is subjected to an anticipatory control dependent on condition magnitudes on which at least one charging-pressure-dependent regulation is superimposed. The regulation has advantageously a PID-like structure whereby the regulating parameters are condition-dependent. The regulation and control are additionally subjected to static as well as dynamic limitations.