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. 2022 Oct 12;22(1):253–269. doi: 10.1007/s10237-022-01645-7

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Fig. 19 — Velocity variations of the mucus layer using profiles (c) and (d) affected by zero shear stress on the upper bound of the mucus layer for different breakdown exponent parameters with α = 0.05 and β₁ = 0.05 a t/T = 1/8, b t/T = 2/8, c t/T = 3/8, d t/T = 5/8 (recovery stroke of profile (d))