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Table 1 Characteristics of the factors in DOE

From: Modeling the dependence of respiration and photosynthesis upon light, acetate, carbon dioxide, nitrate and ammonium in Chlamydomonas reinhardtiiusing design of experiments and multiple regression

Factor Type Unit x min /M 1 x max /M 2
Light intensity Continuous μmolphotons.m-2.s-1 0 200
Acetate concentration Continuous g.L-1 0 1
CO2 concentration Ordinal (2 M) % 0.035 1.5
Nitrate concentration Continuous mM 0 20
Ammonium concentration Continuous mM 0 15
  1. M, modality; x min and x max , minimal and maximal values of the working range (for continuous variables); M1 and M2, 2 modalities of CO2 concentration.