Common use of Numerical information Clause in Contracts

Numerical information. The basic numerical information shall be the effective resistance of the entire breath (Reff) and the effective resistance during inspiration (ReffIn) and expiration (ReffEx). For clinical purposes the values shall be expressed as common logarithmic values LReff, LReffIn and LReffEx, where LReff = lg (Reff), LReffIn = lg (ReffIn) and LReffEx = lg (ReffEx). For easier practical use, clinical data should be given as LReff = lg(10Reff), LReffin = lg (10ReffIn) etc. Derivation of effective resistance: Effective resistance is an important term in electricity, where voltage is generally measured as “effective voltage”, which is the root mean square (RMS) of voltage. In rhinomanometry effective resistance is calculated as where w is the value Δ P or where ∆Peff and eff are the effective pressure loss and volume flux over the complete respiratory cycle.