hysteresis

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Related to Hysteresis loss: Hysteresis loop

hysteresis

 [his-tĕ-re´sis]
1. the failure of coincidence of two associated phenomena, such as that exhibited in the differing temperatures of gelation and of liquefaction of a reversible colloid.
2. a phenomenon exhibited by a physical system in which the system's response to an outside influence depends not only on the instantaneous magnitude of the influence but also on the system's previous history, as when a material undergoing cyclical loading exhibits a loss of energy between cycles of loading and unloading.
3. in cardiac pacing terminology, the number of pulses per minute below the programmed pacing rate that the heart must drop in order to cause initiation of pacing; it can be programmed in by a pulse generator.

hys·ter·e·sis

(his'ter-ē'sis),
1. Failure of either one of two related phenomena to keep pace with the other; or any situation in which the value of one depends on whether the other has been increasing or decreasing.
2. The lag of a magnetic effect behind its cause. Synonym(s): magnetic inertia
3. The temperature differential that exists when a substance, such as reversible hydrocolloid, melts at one temperature and solidifies at another.
4. The basis of a type of cooperativity observed in many enzyme-catalyzed reactions in which the degree of cooperativity is associated with a slow conformational change of the enzyme. Compare: allosterism, cooperativity.
5. The nonlinear nature of the pressure-volume curve of the lung in which transpulmonary pressure at a given volume during inflation is less than the transpulmonary pressure at the same volume during exhalation.
[G. hysterēsis, a coming later]

hysteresis

/hys·te·re·sis/ (his″tĕ-re´sis) [Gr.]
1. a time lag in the occurrence of two associated phenomena, as between cause and effect.
2. in cardiac pacemaker terminology, the number of pulses per minute below the programmed pacing rate that the heart must drop in order to cause initiation of pacing.

hysteresis

[his′tərē′sis]
Etymology: Gk, hysterein, to be late
1 a lagging or retardation of one of two associated phenomena or a failure to act in unison.
2 the influence of the previous condition or treatment of the body on its subsequent response to a given force, as in the elastic property of a lung. At any given lung volume the elastic recoil pressure within the airways during expiration is less than that which exists at the same lung volume during inspiration.

hys·ter·e·sis

(his'tĕr-ē'sis)
1. Failure of either one of two related phenomena to keep pace with the other; or any situation in which the value of one depends on whether the other has been increasing or decreasing.
2. The lag of a magnetic effect behind its cause.
3. The temperature differential that exists when a substance melts at one temperature and solidifies at another.
4. A type of cooperativity in enzyme-catalyzed reactions in which the degree of cooperativity is associated with a slow conformational change of the enzyme.
Compare: allosterism
[G. hysterēsis, a coming later]

hys·ter·e·sis

(his'tĕr-ē'sis)
Failure of either one of two related phenomena to keep pace with the other; or any situation in which the value of one depends on whether the other has been increasing or decreasing.
[G. hysterēsis, a coming later]

hysteresis (histerē´sis),

n a physical phenomenon whereby a material such as a reversible hydrocolloid passes from a solid to a gel state at one temperature and a gel to a solid state at another.

hysteresis

the failure of coincidence of two associated phenomena, such as that exhibited in the differing temperatures of gelation and of liquefaction of a reversible colloid.
References in periodicals archive ?
The output responses evaluated included the cell nucleation density, bulk density, compression hysteresis loss, Shore A hardness, and tensile strength.
Typically, a lower bulk density is associated with a lower hysteresis loss and a lower hardness, which is desirable.
In this paper hysteresis loss of the CW-IPM machine was estimated using experimental data provided in [10, 24, 29].
This characteristic makes the permanent set and the hysteresis loss unfavorably large.
The Tg rises, the Young's modulus increases and the hysteresis loss becomes large because of dodecamethylene carbonate blocks.
Hysteresis Loss and Hysteresis Loss Ratio Versus Number of cycles
Hysteresis loss and hysteresis loss ratio of all the samples were measured over a number of cycles, strain rates, and strain levels to investigate their behavior.
the total hysteresis loss per unit volume in a deformation cycle is given by
Substituting Equation 31 into Equation 35 with a simplifying assumption (m = 1, n = 1) of nonlinear function of stress-strain rate and extension or retraction time, we find that the hysteresis loss for a complete cycle is
This enhanced filler-polymer interaction leads to reduced hysteresis loss and heat build-up under dynamic deformation, while all other in-robber properties remain nearly unchanged (ref.
Comparing with conventional polymers, tan [sigma] of SAV-1 increased at 0[degrees]C, but decreased at 60-100[degrees]C, meaning improved heat build up and decreased hysteresis loss at high temperature.
As to the studies of mechanism of friction of rubber on ice, it has been reported that the relationship between Schallamach wave appearing and high friction[7,8] and at relatively low temperature or high sliding velocity, the hysteresis loss for nondirect source affecting friction[9], on the other hand the viscoelastic properties directly affecting friction at low sliding velocity[10], and the softness of rubber compound affecting high frictions[8,9,11] were discovered.