water balance


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balance

 [bal´ans]
an instrument for weighing.
equilibrium (def. 1).
acid-base balance see acid-base balance.
analytical balance a balance used in the laboratory, sensitive to variations of the order of 0.05 to 0.1 mg.
fluid balance see fluid balance.
negative balance a state in which the amount of water or an electrolyte excreted from the body is greater than that ingested.
nitrogen balance see nitrogen balance.
positive balance a state in which the amount of water or an electrolyte excreted from the body is less than that ingested.
water balance fluid balance.
zero balance a state in which the amount of water or an electrolyte excreted from the body is exactly equal to that ingested; see equilibrium (def. 1).

water balance

A state of equilibrium in which the fluid intake from water and other beverages and foods equals fluid losses in the gastrointestinal tract, urine, sweat and other secretions.

water balance

A state of equilibrium in which the fluid intake from water and other beverages, and foods equals fluid lost in the urine, GI tract, sweat, and other secretions. See Water.
References in periodicals archive ?
where [DELTA]S is the water balance, SF is snowfall rate, RF is rainfall rate, EV is the evapotranspiration, QS is surface run-off and QB means subsurface run-off, conceptually including groundwater run-off But it was shown in (Voss et al., 2013) that the groundwater changes are not taken into consideration properly in land data assimilation models and that TWS berger senses groundwater level variations.
This heterogeneity is directly reflected in changes of evapotranspiration, which, associated with increases in temperature, generate higher atmospheric demand (Lemos Filho et al., 2010) impacting the water balance and agroclimatic zoning.
In the Jinsha River basin, impacts of climate changes and human activities on runoff were analyzed by four quantitative methods, that is, rainfall-runoff relationship, slope variation, double mass curve, and water balance method.
As noticed in Figure 2, there is a strong dependency between the water balance [r.sub.d] and the dimensionless voltage signal [E.sub.w] /[E.sub.w0] [9].
Table 1.Net recharge on the basis of Inflow and outflow factors for water balance
TABLE 2: Average annual hydrologic parameters associated with soil water balance calculations at the control site and eight test sites, 2000-2012
In this sense, the decrease in water balance of cut flowers in association with a lower water uptake and high water loss during vase period.
What is worse is that water can move into a berry through the skin.(3), (4) Thus, the berry water balance is tilted toward increased cracking incidence.
To help fight wrinkles, uneven skin tone and creases that make skin look older, the three-piece range contains the secret ingredient, Polynesian kopara--a highly purified marine extract from the Polynesian island of Moorea.This exopolysaccharide is naturally rich in essential minerals (potassium, sodium, magnesium and cal cium) and helps maintain a healthy skin water balance, while protecting the body from pollutants that lead to aging skin when blended with other ingredients.
The check dam pond water balance indicates the volume of spilled water, potential water to percolate into the soil, and the amount of water to be stored in the pond.