Vector: |
(english) A mathematical entity having a magnitude and a direction in space. |
Velocity: |
(english) A vector quantity equal to the rate that position changes with time. |
Weight: |
(english) The force on an object resulting from gravity. |
Yield stress: |
(english) A material loaded beyond its yield stress, no longer exhibits linear elastic behavior. Metals, particularly mild steel, generally have a very well defined yield stress compared to other materials. Yield stress is sometimes called yield strength. |
Yield strain: |
(english) A material deformed beyond its yield strain, no longer exhibits linear elastic behavior. See yield stress. |
Advanced wastewater treatment |
(Environmental Engineering) The removal of any dissolved or suspended contaminants beyond secondary treatment, often this is the removal of the nutrients nitrogen and/or phosphorus. |
Aerobes |
(Environmental Engineering) Organisms which require molecular oxygen as an electron acceptor for energy production. See anaerobes. |
Aerobic process |
(Environmental Engineering) A process which requires molecular oxygen. |
Alcohol |
(Environmental Engineering) An organic compound with one or more hydroxyl "-OH" groups. |
Aldehyde |
(Environmental Engineering) An organic compound with a carbonyl at one end of a hydrocarbon group. |