Chemical Composition of Volatile Compounds in Propolis from the Northeast Region of Pará State, Brazil.

Propolis is a balsamic product obtained from vegetable resins by exotic Africanized bees L., transported and processed by them, originating from the activity that explores and maintains these individuals. Because of its vegetable and natural origins, propolis is a complex mixture of different compound classes; among them are the volatile compounds present in the aroma.

Modeling and simulation of pulsatile blood flow with a physiologic wave pattern.

This article presents a computational fluid dynamics (CFD) model to analyze pulsatile blood flow in a human artery. The model assumes the vessel as being a straight wall tube, and the blood flow is considered to be incompressible, Newtonian, and axisymmetric. Physiologically realistic resting conditions were adopted for the simulation tests.