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  2. Bacterial motility - Wikipedia

    en.wikipedia.org/wiki/Bacterial_motility

    Swarming motility is a rapid (2–10 μm/s) and coordinated translocation of a bacterial population across solid or semi-solid surfaces, [61] and is an example of bacterial multicellularity and swarm behaviour. Swarming motility was first reported in 1972 by Jorgen Henrichsen.

  3. Motility - Wikipedia

    en.wikipedia.org/wiki/Motility

    Motile marine animals are commonly called free-swimming, [10] [11] [12] and motile non-parasitic organisms are called free-living. [13] Motility includes an organism's ability to move food through its digestive tract. There are two types of intestinal motility – peristalsis and segmentation. [14]

  4. Mannitol motility medium - Wikipedia

    en.wikipedia.org/wiki/Mannitol_motility_medium

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  5. Twitching motility - Wikipedia

    en.wikipedia.org/wiki/Twitching_motility

    Twitching motility is a form of crawling bacterial motility used to move over surfaces. Twitching is mediated by the activity of hair-like filaments called type IV pili which extend from the cell's exterior, bind to surrounding solid substrates, and retract, pulling the cell forwards in a manner similar to the action of a grappling hook.

  6. Life table - Wikipedia

    en.wikipedia.org/wiki/Life_table

    Life table" primarily refers to period life tables, as cohort life tables can only be constructed using data up to the current point, and distant projections for future mortality. Life tables can be constructed using projections of future mortality rates, but more often they are a snapshot of age-specific mortality rates in the recent past, and ...

  7. Late-life mortality deceleration - Wikipedia

    en.wikipedia.org/wiki/Late-life_mortality...

    In gerontology, late-life mortality deceleration is the disputed theory that hazard rate increases at a decreasing rate in late life rather than increasing exponentially as in the Gompertz law. Late-life mortality deceleration is a well-established phenomenon in insects, [ 1 ] which often spend much of their lives in a constant hazard rate ...

  8. Force of mortality - Wikipedia

    en.wikipedia.org/wiki/Force_of_mortality

    Thus the force of mortality at these ages is zero. The force of mortality μ(x) uniquely defines a probability density function f X (x). The force of mortality () can be interpreted as the conditional density of failure at age x, while f(x) is the unconditional density of failure at age x. [1]

  9. Actuarial notation - Wikipedia

    en.wikipedia.org/wiki/Actuarial_notation

    A life table (or a mortality table) is a mathematical construction that shows the number of people alive (based on the assumptions used to build the table) at a given age. In addition to the number of lives remaining at each age, a mortality table typically provides various probabilities associated with the development of these values.