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Pages 152-157

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From page 152...
... An ingestion of, inhalation of, or direct contact with radionucli~des deposits energy from radioactive decays into bodily tissues. This absorbed dose is multiplied by a weighting factor dependent on the type of radiation to calculate an equivalent dose.
From page 153...
... The Delaware Basin formed in a Permian sea and was gradually Flee with thick, extensive layers of sediments and evaporite deposits. Dewey Lake Red Beds youngest of the Ochoan series of rocks, consisting of thin beds of clay, silt, and sandy sentiments, red in color.
From page 154...
... human intrusion inadvertent creation of a radiation pathway by human actions. hydraulic conductivity-capacity for a porous medium to conduct water; defined formally as the volume of water at the existing kinematic viscosity that will move in unit time under a unit hydraulic gradient through a unit area measured at right angles to the direction of flow through a porous material.
From page 155...
... Ostwald's step rule rule stating that an unstable phase passes through successive steps of increasing stability as it becomes a final stable phase. parameter algebraic symbol representative of a well defined physical quantity with a numerical value.
From page 156...
... retardation factor in solute-transport analysis, a parameter that describes the ratio of the net apparent velocity of the concentration of a particular chemical species to the velocity of a nonreactive species (or of water)
From page 157...
... waterfloodin~technique used in the secondary recovery of petroleum and gas whereby water is injected into a petroleum or gas reservoir so that the pressure of the water expels the petroleum or gas. water table surface in an unconfined ground-water system at which the pressure is atmospheric, in the field environment defined by the levels at which water stands in wells that penetrate the saturated zone just far enough to hold standing water.

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