By Laurent Simon, Juan Ospina

ISBN-10: 1118947258

ISBN-13: 9781118947258

This ebook presents recommendations for 2- and third-dimensional linear types of controlled-release platforms. It gains real-world purposes are taken from used to aid illustrate the equipment in Cartesian, cylindrical and round coordinate platforms. It covers the modeling of drug-delivery platforms and gives mathematical instruments to judge and construct controlled-release units. It contains classical and analytical recommendations to unravel boundary-value difficulties regarding - and 3-dimensional partial differential equations. It offers distinct examples, case stories and step by step analytical options to proper difficulties utilizing renowned computational software program.

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Additional info for Closed-form Solutions for Drug Transport through Controlled-Release Devices in Two and Three Dimensions

Example text

We multiply both sides of Eq. 32) Therefore, The final solution is given by Eq. 28) with An defined by Eq. 32). 2 shows the concentration profile for the following values: Ri = 1, R0 = 2, H = 4, c0 = 0 and ci = 1. , N = 15) are used in the series. 998. 4 SUMMARY The method of multiplicative separation of variables was applied to solve Laplace’s equation in cylindrical coordinates. As some boundary conditions were not homogeneous, it was necessary to use an appropriate change of variables before implementing the separation process.

The concentration is 1∕2 at the center of the sphere and can be determined at any position along the radius. 8 shows the profile when r = 1∕2 (See Eq. 2)). Assuming that the surface of the sphere is maintained at a constant concentration u(R, ????) = 1, a three-dimensional surface plot should produce a perfect sphere because the function is 1 for any value of ????. If u(R, ????) is selected such that u(R, ????) = 1 + 2 sin(????), the concentration at the boundary depends on ????, which would result in a deformed sphere.

Lecommandoux, S. (2010). A simple method to achieve high doxorubicin loading in biodegradable polymersomes. J Control Release, 147(3), 428–435. , & Debnath, L. (2007). ). Boston: Birkhäuser. Zill, D. , Wright, W. , & Cullen, M. R. (2013). ). Boston, MA: Brooks/Cole, Cengage Learning. 1 GOVERNING STEADY-STATE TRANSPORT EQUATIONS Poly (lactide-co-glycolide) (PLG) scaffold systems have been used to facilitate localized and sustained delivery of growth factors that contribute to tissue regeneration.