A time-release drug capsule is ingested and settles in the gastrointestinal system. Once inside the body, the capsule slowly released to the body through a diffusion-limited process. Assume the drug carrier is a spherical bead of gelatinous material that can pass through the body without disintegrating. A water soluble drug (species A) is uniformly dissolved within the gel, and has an initial concentration of 50 mg/cm’. Consider a limiting case where the drug is immediately consumed once it reaches the surface of the capsule. a) Define a coordinate system and simplify the differential equation for mass transfer of the drug in terms of concentration c,. State all simplifying assumptions. b) Write the boundary conditions and initial conditions necessary to solve the differential equation. Note: the differential equation does not need to be solved.

A time-release drug capsule is ingested and settles in the gastrointestinal system. Once inside the body, the capsule slowly released to the body through a diffusion-limited process. Assume the drug carrier is a spherical bead of gelatinous material that can pass through the body without disintegrating. A water soluble drug (species A) is uniformly dissolved within the gel, and has an initial concentration of 50 mg/cm’. Consider a limiting case where the drug is immediately consumed once it reaches the surface of the capsule. a) Define a coordinate system and simplify the differential equation for mass transfer of the drug in terms of concentration c,. State all simplifying assumptions. b) Write the boundary conditions and initial conditions necessary to solve the differential equation. Note: the differential equation does not need to be solved.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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