A blood alcohol concentration (BAC) or blood alcohol level (BAL) reflects the amount of alcohol in the body. Food, type and quantity of beverage, weight, sex, and rate of elimination determine the BAC after the consumption of alcohol.
The process of oxygen transfer in the gills of a fish is a good example of the benefits of countercurrent exchange. As oxygen poor blood meets an opposed flow of oxygen rich water, the oxygen begins to diffuse out of the water and into the blood stream.
GENERAL CHARACTERISTICS. A pyroclastic flow is a fluidized mixture of solid to semi-solid fragments and hot, expanding gases that flows down the flank of a volcanic edifice.UMICE FLOWS. Pumice flows are pumice-rich pyroclastic flows derived from the collapse of an eruption column. The lowermost part of the eruption column is called the gas thrust region. Here, the density of the eruption column is greater than the density of the surrounding air.