Formula Creator

Enter primary and / or secondary model formulas.

Options

Model type

Define type of model: Primary, secondary or primary (secondary). The latter is a combination of one primary and one or more secondary model formulas.

Formula from DB

Choose one of the formulas from the internal database if the aim is to create a variation of a stored formula. To enter a completely new formula do not change this field.

Formula name

Enter a name for the new formula.

Type

Choose the type of the model (e.g. inactivation in case of a primary model or T if a secondary model models the change of a parameter depending on the temperature.

Formula

Enter the equation starting with 'y=', for example. When the equation is complete click 'Apply'. Enter '2x' as '2*x' to multiply; else '2x' is one parameter. Brackets may not be used left of the equals sign: "N(t) = ..." should be written as "Nt = ..." or simply "N=...".

Parameter Definition

Define the independent parameter. If known, also enter minimum and maximum values for the parameter and a description. If the option 'primary (secondary)' was chosen click on a parameter name in order to define the secondary model for this parameter.

References

The reference for the mathematical formula can be added, edited or deleted. The new reference can be chosen from the internal database. If the reference is not yet in there click the '+' button to manually enter a new reference.

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