The phrase "activity of water" is correct and usable in written English.
It is typically used in scientific contexts, particularly in chemistry and food science, to describe the availability of water in a substance for chemical reactions or microbial growth.
Example: "The activity of water in this food product is crucial for determining its shelf life and stability."
Alternatives: "water activity" or "availability of water".
Therefore, the present study aimed to isolate and evaluate the potentially active substances or fractions with potential pharmacological activity of water hyacinth.
Currently active programs exist in biocatalysis/applied enzymology, ligand binding and the activity of water, and the synthesis of novel donors of nitric oxide.
New correlations were proposed for seawater: vapor pressure, thermal conductivity and activity of water.
The use of isothermal TGA with Knudsen-like cells allows determination of the thermodynamic activity of water, aW.
Mutual diffusion and activity of water in hardened and unhardened gelatin is measured by step-change gravimetric sorption methods.
Results show that the composition of ultimate hydration products are controlled by concentration of KH2PO4 and MgO, activity of water and pH value of solution.
Controlling the activity of water in the reactant streams is critical both to the design of fuel cell systems and to the useable life of membrane separators.
Results suggest that alcohol molecules with a smaller alkyl group or a greater number of hydroxyl groups are more effective at lowering the activity of water.
The objective was to test the hypothesis that the activity of water is the key parameter in water-weakening of chalk.
The relaxation rate constant is between 1.0 and 5.1 × 105s−1 and is increased as the sorbed concentration or the vapour activity of water increases.
In the presence of a suitable acceptor, they catalyze acyltransfer reactions (such as alcoholysis, aminolysis, or perhydrolysis) much faster than hydrolysis even in aqueous media with a high thermodynamic activity of water (aW).
