An apparatus and methods for disambiguating data elements transmitted by exception over a multi-path, multi-tiered communications network of nodes from at least one originating node to a destination node. The invention provides a method to inhibit the function of the drug efflux pump of Pseudomonas aeruginosa, comprising modifying any amino acid residue selected from 100th to 109th or 311th to 320th amino acid residues in the amino acid sequence of mature OprM protein. An in-cylinder flame velocity is then calculated from the combustion period. The lower end of the bushing member is extended below the support members and provided with an annular groove for receiving an o-ring for holding the bushing member in a fixed position. In addition to mapping to each triggering outcome with a outcome, each outcome can be mapped to a game enhancement parameter. It is provided that a second absolute pressure sensor is located outside the flow path, which is designed to provide a second pressure signal as a function of an operating pressure outside the flow path and which is connected to the evaluation circuit for enabling a differential pressure between the first and second pressure signals to be determined.