penetration (in cell biology)
Action of entering or passing through a cell membrane.
Ability or power to enter or pass through a cell membrane.
perceived environment
perceived risk
See subjective environment ...
market penetration The extent to which an activity or measure is actually implemented compared to all potential uses or markets.
Penetration of water into a medium, for instance the soil.
Influent
The stream of water that enters any system or treatment unit.
The penetration of a substance into or through another substance or medium is absorption.
Acid Rain ...
The penetration of water through the ground surface into sub-surface soil or the penetration of water from the soil into sewer or other pipes through defective joints, connections, or manhole walls.
Infiltration Gallery ...
Resistant to penetration by fluids or roots.
impoverishment ( soil)
The process or the result of making the soil less productive.
Absorption: The penetration of atoms, ions, or molecules into the bulk mass of a substance.
Dermal Absorption/Penetration- Process by which a chemical penetrates the skin and enters the body as an internal dose.
Dermal Exposure- Contact between a chemical and the skin.
A direct push system used to measure lithology based on soil penetration resistance.
Suspended solids in water reduce light penetration in the water column, can clog the gills of fish and invertebrates, and are often associated with toxic contaminants because organics and metals tend to bind to particles.
Absorption is refers to the process of the penetration of one material into another; adsorption to the action of one material being collected on another's surface. [Crutzen, Paul J. and Graedel, T.E.
Cone Penterometer Testing (CPT): A direct push system used to measure lithology based on soil penetration resistance.
Impervious: The quality or state of being impermeable; resisting penetration by water or plant roots. Impervious ground cover like concrete and asphalt affects quantity and quality of runoff.
Soil cone penetrometer is used to measure soil resistance to penetration, which indicates soil strength.
Measurement of soil strength with a soil cone penetrometer.
soil. Also see percolation. 2) the penetration of water from
the soil into sewer or other pipes through defective joints,
connections or manhole walls.
In marine ecosystems it is much thinner than the deeper aphotic zone (below the level of effective light penetration), typically reaching 30 m in coastal waters but extending to 100-200 m in open ocean waters.
infiltration. 1) The gradual flow or movement of water into and through (to percolate or pass through) the pores of the soil. Also see percolation. 2) the penetration of water from the soil into sewer or other pipes through defective joints, ...
Generally, x rays have lower energies than gamma rays, but like gamma rays, x rays can penetrate into the body. Sometimes lead or concrete may be used as a shielding material to reduce the penetration of x rays.
 See also: Water, Air, Condition, Organic, Organism
  
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