Mathematics, 17.02.2022 05:40 alaynajk04
Active oxygen and free radicals are believed to be exacerbating factors in causing cell injury and aging in living tissue (see citation below). Researchers are therefore interested in understanding the protective role of natural antioxidants. In the study of one such antioxidant (Hsian-tsao leaf gum), the antioxidation activity of the substance has been found to depend on concentration in the following way: dA(c) /dc = k{L − A(c)} A(0) = 0. In this equation, the dependent variable A is a quantitative measure of antioxidant activity at concentration c. The constant L represents a limiting or equilibrium value of this activity, and k a positive rate constant. a. Let B(c) = A(c) - L and reformulate the given initial value problem in terms of this new dependent variable, B. b. Solve the initial value problem for B(c) and then determine the quantity A(c). c. Determine the concentration at which 95% of the limiting antioxidation activity is achieved.
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Active oxygen and free radicals are believed to be exacerbating factors in causing cell injury and a...
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