equilibrium

[e″kwĭ-lib´re-um]

1. harmonious adjustment of different elements or parts; called also balance.

2. a state of chemical balance in the body, reached when the tissues contain the proper proportions of various salts and water. See also acid-base balance and fluid balance.

3. sense of equilibrium.

dynamic equilibrium the condition of balance between varying, shifting, and opposing forces that is characteristic of living processes.

e·qui·lib·ri·um

(ē'kwi-lib'rē-ŭm),

1. The condition of being evenly balanced; a state of repose between two or more antagonistic forces that exactly counteract each other.
See also: equilibrium constant.

2. In chemistry, a state of apparent repose created by two reactions proceeding in opposite directions at equal speed; in chemical equations, sometimes indicated by two opposing arrows (⇄) instead of the equal sign.
See also: equilibrium constant. Synonym(s): dynamic equilibrium

[L. aequilibrium, a horizontal position, fr. aequus, equal, + libra, a balance]

Farlex Partner Medical Dictionary © Farlex 2012

equilibrium

Imaging
An MRI term for a state of balance between two opposing forces or divergent spheres of influence.

equilibrium

A state of constancy in a system; a population might be in static equilibrium–no pasa nada–ie, no births or deaths, or in dynamic equilibrium–ie, same numbers of births and deaths; the state to which a system evolves–eg, sustained periodic oscillations. See Chemical equilibrium, Linkage equilibrium, Sedimentation equilibrium Neurology A state of balance in the body, where forces are appropriately offset by counterforces. Cf Dizziness, Equilibrium, Vertigo Orthopedics A state of biomechanical homeostasis that enables persons to know where their bodies are in the environment and to maintain a desired position. See Fixed point equilibrium.

e·qui·lib·ri·um

(ē'kwi-lib'rē-ŭm)

1. The condition of being evenly balanced; a state of repose between two or more antagonistic forces that exactly counteract each other.

2. chemistry A state of apparent repose created by two reactions proceeding in opposite directions at equal speed; in chemical equations, sometimes indicated by two opposing arrows (↔) or (⇌).
Synonym(s): dynamic equilibrium.

[L. aequilibrium, a horizontal position, fr. aequus, equal, + libra, a balance]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

e·qui·lib·ri·um

(ē'kwi-lib'rē-ŭm)

Condition of being evenly balanced; a state of repose between two or more antagonistic forces that exactly counteract each other.

[L. aequilibrium, a horizontal position, fr. aequus, equal, + libra, a balance]

Medical Dictionary for the Dental Professions © Farlex 2012

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References in periodicals archive

Table 1 Concentrations of compounds at the thermodynamic equilibrium of the Si-O-H-C-N system in the temperature range from 1 to 70[degrees]C Compound [H.sub.4]Si[O.sub.4] [H.sub.2]Si [O.sub.4.sup.-2] Concentration, mol/l 2.85E-05 1.28E-13 Compound [H.sub.3]Si [H.sub.3]Si [O.sub.3.sup.+] [O.sub.4.sup.-] Concentration, mol/l 3.24E-10 8.80E-09 Compound His[O.sub.3.sup.-] Si[O.sub.2.sup.*] Concentration, mol/l 1.35E-08 9.52E-06 Compound Si[O.sub.2] Concentration, mol/l 2.00E-01 Table 2 The ranges of variations of the parameters of the system S-O-H-C-N, in which a solid Si[O.sub.2] phase is formed Parameter Concentration Concentration Concentration Si[(O[C.sub.2] [H.sub.2]O N[H.sub.4]OH [H.sub.5]).sub.4] Value range 0 ...

THERMODYNAMIC OF OBTAINING OF MONODISPERSE PARTICLES SI[O.sub.2] BY TETRAETHOXYSILANE HYDROLYSIS IN THE SI-O-H-C-N SYSTEM

Ramaswamy, "Modeling biomass gasification using thermodynamic equilibrium approach," Applied Biochemistry and Biotechnology, vol.

Analysis of hydrogen generation through thermochemical gasification of coconut shell using thermodynamic equilibrium model considering char and tar

On the correction to Saha's formula for small deviations from thermodynamic equilibrium. Proc.

Liquid Metallic Hydrogen II. A critical assessment of current and primordial helium levels in the sun

It is because the measurements were misinterpreted using the erroneous assumption that soil samples reach thermodynamic equilibrium in pressure cell apparatus.

Plant wilting can be caused either by the plant or by the soil

through the densification that continues as a polymer approaches its thermodynamic equilibrium below the glass transition temperature, [T.sub.g].

Concurrent physical aging and degradation of crosslinked coating systems in accelerated weathering

If the liquid phase already exists (in stable thermodynamic equilibrium) between the two solid bodies, and the distance H is steadily increased (as in the experiments reported in Maeda et al., 2003), the width of the liquid bridge will steadily decrease (as the stable equilibrium configuration corresponds to smaller values of D : see Figures 2 and 4), until, at some critical value of H, the bridge will break (as the existence of the liquid phase becomes energetically unfavourable).

On the thermodynamic stability of liquid capillary bridges

However, for the present work we decided just to consider the thermodynamic equilibrium and neglect the effect of other phenomena.

A method for assessing the choice of polymeric materials for specific applications

It then shows how the method of fluctuating hydrodynamics can be extended to deal with hydrodynamic fluctuations in fluids that are not in thermodynamic equilibrium. While fluctuations in equilibrium fluids are generally short ranged unless the system is close to a critical point, fluctuations in nonequilibrium fluids are always spatially long ranged.

Hydrodynamic Fluctuations in Fluids and Fluid Mixtures

Under conditions of thermodynamic equilibrium, the quantitative methods of analysis we describe below are applicable.

Hybridization isotherms of DNA microarrays and the quantification of mutation studies