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The fraction of water held back in the aquifer is known as specific retention. Thus it can be said that porosity is the sum of specific yield and specific retention. Specific yield of soils differ from each other in the sense that some soil types have strong molecular attraction with the water held in their pores while others have less.
These properties are storativity (S), specific storage (S s) and specific yield (S y). According to Groundwater , by Freeze and Cherry (1979), specific storage, S s {\displaystyle S_{s}} [m −1 ], of a saturated aquifer is defined as the volume of water that a unit volume of the aquifer releases from storage under a unit decline in hydraulic head.
The specific heat of pure water is ~ 1 calorie per gram, the specific heat of dry soil is ~ 0.2 calories per gram, hence, the specific heat of wet soil is ~ 0.2 to 1 calories per gram (0.8 to 4.2 kJ per kilogram). [90] Also, a tremendous energy (~584 cal/g or 2442 kJ/kg at 25 °C) is required to evaporate water (known as the heat of ...
Pores (the spaces that exist between soil particles) provide for the passage and/or retention of gasses and moisture within the soil profile.The soil's ability to retain water is strongly related to particle size; water molecules hold more tightly to the fine particles of a clay soil than to coarser particles of a sandy soil, so clays generally retain more water. [2]
Many circuit courts have said that law enforcement can hold your property for as long as they want. D.C.’s high court decided last week that’s unconstitutional.
Real estate investment trusts (REITs) own, operate, or finance income-generating real estate. REITs allow individuals to invest in various types of real estate without having to directly own or ...
The fourth-quarter pre-tax average yield of 4.93% for the fixed maturity portfolio was up 45 basis points compared with last year. The average pre-tax yield for the total of purchased taxable and ...
Specific surface area (SSA) is a property of solids defined as the total surface area (SA) of a material per unit mass, [1] (with units of m 2 /kg or m 2 /g). Alternatively, it may be defined as SA per solid or bulk volume [ 2 ] [ 3 ] (units of m 2 /m 3 or m −1 ).