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Strain (biology), variants of biological organisms; Strain (chemistry), a chemical stress of a molecule; Strain (injury), an injury to a muscle; Strain (mechanics), a measure of deformation; Filtration, separating fluids from solids by passing through a filter; Percolation, of fluids through porous materials; Psychological stress
In biology, a strain is a genetic variant, a subtype or a culture within a biological species. Strains are often seen as inherently artificial concepts, characterized by a specific intent for genetic isolation. [ 1 ]
In mechanics, strain is defined as relative deformation, compared to a reference position configuration. Different equivalent choices may be made for the expression of a strain field depending on whether it is defined with respect to the initial or the final configuration of the body and on whether the metric tensor or its dual is considered.
A strain is an acute or chronic soft tissue injury that occurs to a muscle, tendon, or both. The equivalent injury to a ligament is a sprain . [ 1 ] Generally, the muscle or tendon overstretches and partially tears, under more physical stress than it can withstand, often from a sudden increase in duration, intensity, or frequency of an activity.
The Strain is an American horror drama television series that aired on FX from July 13, 2014, to September 17, 2017. [1] It was created by Guillermo del Toro and Chuck Hogan , based on their novel trilogy of the same name .
Allylic strain, or A 1,3 strain is closely associated to syn-pentane strain. An example of allylic strain can be seen in the compound 2-pentene. It's possible for the ethyl substituent of the olefin to rotate such that the terminal methyl group is brought near to the vicinal methyl group of the olefin. These types of compounds usually take a ...
Cannabis strains is a popular name to refer to plant varieties of the monospecific genus Cannabis sativa L..They are either pure or hybrid varieties of the plant, which encompasses various sub-species C. sativa, C. indica, and C. ruderalis.
The concept of strain is used to evaluate how much a given displacement differs locally from a rigid body displacement. [1] [8] [9] One of such strains for large deformations is the Lagrangian finite strain tensor, also called the Green-Lagrangian strain tensor or Green–St-Venant strain tensor, defined as