Respiratory Distress Syndrome. Respiratory distress syndrome of the newborn, also called hyaline membrane disease, is the most common cause of respiratory distress in premature infants, correlating with structural and functional lung immaturity. The pathophysiology is complex.
Orange juice with pulp is a heterogeneous mixture. The pulp is not uniformly distributed throughout the juice, often settling at the bottom of the jug, resulting in regions with distinctly different properties.
Heterogeneous mixtures have at least two visible phases. Most of the time this is obvious when you look at the material, you can see differences in color or texture. An example of this is granite, breakfast cereal with milk, and wood. Some mixtures are more subtle, milk scatters light and thus must contain solid particles as well as the liquid water.