slovodefinícia
escherichia
(encz)
escherichia, n:
escherichia
(wn)
escherichia
n 1: a genus of enteric bacteria
podobné slovodefinícia
escherichia
(encz)
escherichia, n:
escherichia coli
(encz)
Escherichia coli,Escherichia coli [eko.] RNDr. Pavel Piskač
escherichia coli
(czen)
Escherichia coli,Escherichia coli[eko.] RNDr. Pavel Piskač
Escherichia coli
(gcide)
Indole \In"dole\, Indol \In"dol\([i^]n"d[=o]l), n. [Indigo + -ol
of phenol.] (Chem., Physiol. Chem.)
A white, crystalline substance, C8H7N, obtained from blue
indigo, and almost all indigo derivatives, by a process of
reduction; chemically, it is 2,3-benzopyrrole, a bicyclic
heterocyclic compound, having a benzene ring fused to a
pyrrole ring. It is also formed from proteinaceous matter,
together with skatol, by putrefaction, and by fusion with
caustic potash, and is present in human excrement, as well as
in the intestinal canal of some herbivora. It is produced in
rich growth media by the intestinal bacterium {Escherichia
coli}.
[1913 Webster +PJC]Exponential \Ex`po*nen"tial\, a. [Cf. F. exponentiel.]
1. Pertaining to exponents; involving variable exponents; as,
an exponential expression; exponential calculus; an
exponential function.
[1913 Webster]

2. changing over time in an exponential manner, i. e.
increasing or decreasing by a fixed ratio for each unit of
time; as, exponential growth; exponential decay.
[PJC]

Note:

Exponential growth is characteristic of bacteria and other
living populations in circumstances where the conditions
of growth are favorable, and all required nutrients are
plentiful. For example, the bacterium Escherichia coli
in rich media may double in number every 20 minutes until
one of the nutrients becomes exhausted or waste products
begin to inhibit growth. Many fascinating thought
experiments are proposed on the theme of exponential
growth. One may calculate, for example how long it would
take the progeny of one Escherichia coli to equal the
mass of the known universe if it multiplied unimpeded at
such a rate. The answer, assuming the equivalent of
10^80 hydrogen atoms in the universe, is less than three
days. Exponential increases in a quantity can be
surprising, and this principle is often used by banks to
make investment at a certain rate of interest seem to be
very profitable over time.

Exponential decay is exhibited by decay of radioactive
materials and some chemical reactions (first order
reactions), in which one-half of the initial quantity of
radioactive element (or chemical substance) is lost for
each lapse of a characteristic time called the
half-life.
[PJC]

Exponential curve, a curve whose nature is defined by means
of an exponential equation.

Exponential equation, an equation which contains an
exponential quantity, or in which the unknown quantity
enters as an exponent.

Exponential quantity (Math.), a quantity whose exponent is
unknown or variable, as a^x.

Exponential series, a series derived from the development
of exponential equations or quantities.
[1913 Webster]
escherichia
(wn)
escherichia
n 1: a genus of enteric bacteria
escherichia coli
(wn)
Escherichia coli
n 1: a species of bacterium normally present in intestinal tract
of humans and other animals; sometimes pathogenic; can be a
threat to food safety [syn: Escherichia coli, E. coli]
genus escherichia
(wn)
genus Escherichia
n 1: a genus of bacteria

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