Location: The Physics of Physiology - Example 8: Membrane ion channels @ ca0ee1a16a2b / FAIRDO BG example 3.9.cellml

Author:
David Nickerson <david.nickerson@gmail.com>
Date:
2024-01-11 18:03:04+13:00
Desc:
Initial documentation to use in making an exposure
Permanent Source URI:
https://models.physiomeproject.org/workspace/af4/rawfile/ca0ee1a16a2b93fbefe9ea6de72d5d0a6b254eed/FAIRDO BG example 3.9.cellml

<?xml version='1.0' encoding='UTF-8'?>
<model name="BG6" xmlns="http://www.cellml.org/cellml/1.1#" xmlns:cellml="http://www.cellml.org/cellml/1.1#">
    <!-- The Nernst-Planck equation-->
    <units name="dim">
        <unit units="dimensionless"/>
    </units>
    <units name="mol_per_s">
        <unit units="mole"/>
        <unit exponent="-1" units="second"/>
    </units>
    <units name="per_mol">
        <unit exponent="-1" units="mole"/>
    </units>
    <units name="C_per_mol">
        <unit units="coulomb"/>
        <unit exponent="-1" units="mole"/>
    </units>
    <units name="J_per_mol">
        <unit units="joule"/>
        <unit exponent="-1" units="mole"/>
    </units>
    <units name="J_per_C">
        <unit units="joule"/>
        <unit exponent="-1" units="coulomb"/>
    </units>
    <component name="main">
        <variable initial_value="0" name="t" units="second"/>
        <variable initial_value="9.64853321e4" name="F" units="C_per_mol"/>
        <variable initial_value="2578.73058" name="RT" units="J_per_mol"/>
        <!-- R=8.31446262 J/mol/K, T=310.15 K, -->
        <!-- State variables-->
        <variable initial_value="3" name="q_i_1" units="mole"/>
        <variable initial_value="0" name="q_i_2" units="mole"/>
        <variable initial_value="0" name="q_e_m" units="coulomb"/>
        <variable name="v_i_m" units="mol_per_s"/>
        <variable name="u_i_1" units="J_per_mol"/>
        <variable name="u_i_2" units="J_per_mol"/>
        <variable initial_value="-0.080" name="u_e_m" units="J_per_C"/>
        <variable name="u_f_m" units="J_per_mol"/>
        <variable name="u_r_m" units="J_per_mol"/>
        <variable name="u_nernst" units="J_per_C"/>
        <variable initial_value="1" name="z_q" units="dim"/>
        <!-- Constitutive parameters-->
        <variable initial_value="20" name="K_q_i_1" units="per_mol"/>
        <variable initial_value="20" name="K_q_i_2" units="per_mol"/>
        <variable initial_value="10" name="kappa_i_m" units="mol_per_s"/>
        <!-- Conservation laws-->
        <math xmlns="http://www.w3.org/1998/Math/MathML">
            <apply>
                <eq/>
                <apply>
                    <diff/>
                    <bvar>
                        <ci>t</ci>
                    </bvar>
                    <ci>q_i_1</ci>
                </apply>
                <apply>
                    <minus/>
                    <ci>v_i_m</ci>
                </apply>
            </apply>
            <apply>
                <eq/>
                <apply>
                    <diff/>
                    <bvar>
                        <ci>t</ci>
                    </bvar>
                    <ci>q_i_2</ci>
                </apply>
                <ci>v_i_m</ci>
            </apply>
            <apply>
                <eq/>
                <apply>
                    <diff/>
                    <bvar>
                        <ci>t</ci>
                    </bvar>
                    <ci>q_e_m</ci>
                </apply>
                <apply>
                    <times/>
                    <apply>
                        <minus/>
                        <ci>z_q</ci>
                    </apply>
                    <ci>F</ci>
                    <ci>v_i_m</ci>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>u_f_m</ci>
                <apply>
                    <plus/>
                    <ci>u_i_1</ci>
                    <apply>
                        <times/>
                        <ci>z_q</ci>
                        <ci>F</ci>
                        <ci>u_e_m</ci>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>u_r_m</ci>
                <ci>u_i_2</ci>
            </apply>
            <!-- Constitutive relations-->
            <apply>
                <eq/>
                <ci>u_i_1</ci>
                <apply>
                    <times/>
                    <ci>RT</ci>
                    <apply>
                        <ln/>
                        <apply>
                            <times/>
                            <ci>K_q_i_1</ci>
                            <ci>q_i_1</ci>
                        </apply>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>u_i_2</ci>
                <apply>
                    <times/>
                    <ci>RT</ci>
                    <apply>
                        <ln/>
                        <apply>
                            <times/>
                            <ci>K_q_i_2</ci>
                            <ci>q_i_2</ci>
                        </apply>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>v_i_m</ci>
                <apply>
                    <times/>
                    <ci>kappa_i_m</ci>
                    <apply>
                        <minus/>
                        <apply>
                            <exp/>
                            <apply>
                                <divide/>
                                <ci>u_f_m</ci>
                                <ci>RT</ci>
                            </apply>
                        </apply>
                        <apply>
                            <exp/>
                            <apply>
                                <divide/>
                                <ci>u_r_m</ci>
                                <ci>RT</ci>
                            </apply>
                        </apply>
                    </apply>
                </apply>
            </apply>
            <apply>
                <eq/>
                <ci>u_nernst</ci>
                <apply>
                    <times/>
                    <apply>
                        <divide/>
                        <ci>RT</ci>
                        <apply>
                            <times/>
                            <ci>z_q</ci>
                            <ci>F</ci>
                        </apply>
                    </apply>
                    <apply>
                        <ln/>
                        <apply>
                            <divide/>
                            <apply>
                                <times/>
                                <ci>K_q_i_2</ci>
                                <ci>q_i_2</ci>
                            </apply>
                            <apply>
                                <times/>
                                <ci>K_q_i_1</ci>
                                <ci>q_i_1</ci>
                            </apply>
                        </apply>
                    </apply>
                </apply>
            </apply>
        </math>
    </component>
</model>