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The measurement was originally used by the Danish biochemist S.P.L. Sørensen to represent the hydrogen ion concentration, expressed in equivalents per litre, of an aqueous solution: pH = -log[H+] (in expressions of this kind, enclosure of a chemical symbol within square brackets denotes that the concentration of the symbolized species is the quantity being considered).
The total content of phenols in samples was expressed in equivalents of GA (mg) in a gram of dried plant material.
The SAR values for each water sample were calculated using the following equation (Richards 1954): {text{SAR}} = frac{{{text{Na}}^{{sqrt {frac{{{text{Ca}}^{2 + } + {text{Mg}}^{2 + } }}{2}} }}; (4 where the concentrations are reported in equivalents per million.
The peroxide index measures the initial oxidation of the fresh oil or the rancidity grade in equivalents of active oxygen per unit mass of oil, allowing for oxidation detection before organoleptic detection.
The concentrations of any constituent in equivalents per million (milligram equivalent per kilogram) are computed by multiplying its concentrations in parts per million by the reciprocal of the combining weight.
The combined concentrations (in equivalents) of the major cations Ca, K, Mg, and Na therefore provide a useful proxy of conductivity and the concentration of total dissolved solids [See Additional file 2, Fig. S3].
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The idea that both sides were engaged in equivalent hysteria became a theme of commentary.
Similar striatal volumes have been reported in equivalent strains [21].
INCX and IATP were expressed in equivalent densities in CPCeP and NRCM.
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