Gamma_pH_4p: this function of secondary growth model describe the...

In Ghayabh/predictive-microbiology: bacterialgrowth Package

Description

this function of secondary growth model describe the evolution of the square root of the maximum specific growth rate (sqrtmumax) as a function of pH, This is a symetric cardinal pH model developped by Rosso & al.in 1995 with four parameters (pHmin, pHopt, pHmax,muopt)

Usage

Gamma_pH_4p(pH, pHmin, pHmax, pHopt, muopt)

Arguments

pH	pH #a number
pHmin	minimal groMh pH #a number
pHmax	Maximal growth pH #a number
pHopt	Optimal growth pH #a number
muopt	Optimal growth rate # a number

Details

\begin{equation}\begin{aligned} &\text { "cpm_pH_4p" <- as.formula(sqrtmumax }^{\sim} \text { sqrt }≤ft(((\mathrm{pH}>\text { > } \text { pHmin }) \&(\mathrm{pH}<\mathrm{pHmax})) \text { * muopt } *(\mathrm{pH}-\mathrm{pHmin})^{*}(\mathrm{pH}-\mathrm{pHmax}) / \mathrm{(pH}\right.\\ &\text { pHmin) }≤ft.^{*}(\mathrm{pH}-\mathrm{pHmax})-(\mathrm{pH}-\mathrm{pHopt})^{\wedge} 2\right) \end{aligned}\end{equation}

Value

mumax #maximum growth rate # a number

Examples

Gamma_pH_4p(5,4,9,7,0.5)

Ghayabh/predictive-microbiology documentation built on Nov. 14, 2020, 7:54 p.m.