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Degree of saturation may refer to: Degree of saturation (earth sciences), a ratio of liquid to the total volume of voids in a porous material; Degree of saturation (traffic), a measure used in traffic engineering
In soil mechanics and petroleum engineering the water saturation or degree of saturation, , is defined as = = = where = / is the porosity, in terms of the volume of void or pore space and the total volume of the substance .
The formula for degree of unsaturation is: = + where n i is the number of atoms with valence v i. [2] That is, an atom that has a valence of x contributes a total of x − 2 to the degree of unsaturation. The result is then halved and increased by 1.
The degree of saturation (DoS) of an intersection (typically under traffic signal control) or a link measures the demand relative to the total capacity. A DoS value of 100% meaning that demand and capacity are equal and no further traffic is able to progress through the junction.
A saturated compound is a chemical compound (or ion) that resists addition reactions, such as hydrogenation, oxidative addition, and binding of a Lewis base. The term is used in many contexts and for many classes of chemical compounds.
Soil aeration maintains oxygen levels in the plants' root zone, needed for microbial and root respiration, and important to plant growth.Additionally, oxygen levels regulate soil temperatures and play a role in some chemical processes that support the oxidation of elements like Mn 2+ and Fe 2+ that can be toxic.
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It depends on the permeability of the material (pores, compaction) and on the degree of saturation. Saturated hydraulic conductivity, K sat, describes water movement through saturated media. Where hydraulic conductivity has the capability to be measured at any state.