Related Experiment Video
Updated: Aug 12, 2026

Models and Methods to Evaluate Transport of Drug Delivery Systems Across Cellular Barriers
Published on: October 17, 2013
Transport in finite size systems: An exit time approach
P. Castiglione1, M. Cencini, A. Vulpiani
1Dipartimento di Fisica, Universita "La Sapienza," and INFM, Unita di Roma 1, P.le A. Moro 2, I-00185, Roma, Italy.
Abstract:
In the framework of chaotic scattering we analyze passive tracer transport in finite systems. In particular, we study models with open streamlines and a finite number of recirculation zones. In the nontrivial case with a small number of recirculation zones a description by means of asymptotic quantities (such as the eddy diffusivity) is not appropriate. The nonasymptotic properties of dispersion are characterized by means of the exit time statistics, which shows strong sensitivity on initial conditions. This yields a probability distribution function with long tails, making impossible a characterization in terms of a unique typical exit time. (c) 1999 American Institute of Physics.
More Related Videos
Related Concept Videos
Transport Number
Fast Reactions
One-Compartment Open Model for Extravascular Administration: Zero-Order Absorption Model
Zero-order absorption maintains a steady rate irrespective of the amount of drug left to be absorbed, making it a constant process. In the...
One-Compartment Open Model for Extravascular Administration: First-Order Absorption Model
Two-Compartment Open Model: Extravascular Administration
The absorption exponent (ka) indicates the speed at which the drug is...
Reynolds Transport Theorem

