All of these places, the magazine reports, conform to data that shows the preponderance of urban growth taking place outside the old urban cores. But in its sweeping claim of a âgreat suburbanization,â the report seems to sidestep a central question: What is a suburb, anyway?
Oxygen saturation (symbol SO2) is a relative measure of the amount of oxygen that is dissolved or carried in a given medium.It can be measured with a dissolved oxygen probe such as an oxygen sensor or an optode in liquid media, usually water. The standard unit of oxygen saturation is percent (%).n medicine, oxygen saturation refers to oxygenation, or when oxygen molecules (O 2) enter the tissues of the body. In this case blood is oxygenated in the lungs, where oxygen molecules travel from the air and into the blood.
In a stable body of water with no stratification, dissolved oxygen will remain at 100% air saturation. 100% air saturation means that the water is holding as many dissolved gas molecules as it can in equilibrium.At equilibrium, the percentage of each gas in the water would be equivalent to the percentage of that gas in the atmosphere â i.e. its partial pressure Â¹Â³.ust as low dissolved oxygen can cause problems, so too can high concentrations. Supersaturated water can cause gas bubble disease in fish and invertebrates Â¹Â². Significant death rates occur when dissolved oxygen remains above 115%-120% air saturation for a period of time.