Given the complexity of modelling acidification, including calculation of pHBC at changing values of pH, and the amount of experimental data required to do it mechanistically, an alternative approach may be useful--to measure the soil's pH buffer curve using appropriate conditions and then to use the empirical curve
The [beta] function is an empirical curve
based only on two parameters (arch depth and molar width), it does not take the rest of the dental landmarks into consideration and it has no respect for asymmetry because it is a symmetrical function.
Phillips' empirical curve
became famous almost instantaneously, despite it being a "rush job" (Phillips, cited by Blyth, 1975, p.
As previously mentioned, the empirical curve
3) and, in the absence of first-principles calculation methods, has to be represented by empirical curves
In order to make the hydraulic system heat calculations more manageable, some fluid power companies have conducted extensive tests and reduced results to empirical curves