Model Mathematics

\frac{d}{d time} (E) = k2 ENa + k4 EH + k6 ENH4 - (k1 Na E + k3 H E + k5 NH4 E)

\frac{d}{d time} (ENa) = k1 E Na + k14 ENa_- (k2 ENa + k13 ENa)

\frac{d}{d time} (EH) = k3 H E + k16 EH_- (k4 EH + k15 EH)

\frac{d}{d time} (ENH4) = k5 NH4 E + k18 ENH4_- (k6 ENH4 + k17 ENH4)

\frac{d}{d time} (E_) = k8 ENa_+ k10 EH_+ k12 ENH4_- (k7 Na_E_+ k9 H_E_+ k11 NH4_E_)

\frac{d}{d time} (ENa_) = k7 E_Na_+ k13 ENa - (k8 ENa_+ k14 ENa_)

\frac{d}{d time} (EH_) = k9 H_E_+ k15 EH - (k10 EH_+ k16 EH_)

\frac{d}{d time} (ENH4_) = k11 NH4_E_+ k17 ENH4 - (k12 ENH4_+ k18 ENH4_)

W = \frac{H_}{H_+ KH} k13 = 2.41E0 W k14 = 2.41E0 W k15 = (4.8E-1) W k16 = (4.8E-1) W k17 = 2.41E0 W k18 = 2.41E0 W