The phrase "a useful quantity of" is correct and usable in written English.
It can be used when referring to an amount of something that is beneficial or helpful in a particular context.
Example: "In order to conduct the experiment successfully, we need a useful quantity of the reagent."
Alternatives: "an adequate amount of" or "a sufficient quantity of".
We show that a useful quantity to calibrate the degree of cooperation is the Shannon entropy.
Nevertheless, as shown in Table 2, odds ratios for the 90th versus the 10th percentile may be estimated as a useful quantity to express the strength of the association with disease.
The effective dose is a useful quantity for comparison among different sources of ionising radiation, such as that from DXA and QCT or DXA and natural background radiation.
Thus, CRO is a useful quantity for ion competition estimation.
Storing an automotively useful quantity of hydrogen in a container the size of a car's gas tank requires enormous compression and expensive composite materials.
A useful quantity related to the flow of charge is current density, the flow of current per unit area.
Acceptability of the TES intervention was measured on a 0 10 point scale (higher scores corresponding to greater acceptability) using 5 indicators: how interesting, how useful, quantity of new information, how easy to understand, and how satisfied.
Briefly, the QALY is a useful measure of health benefit because it simultaneously captures both quantity and quality gains or losses [ 12].
The company's goal isn't to create weird goats; they're merely a means of producing useful quantities of spider silk, a simple substance created eons ago by natural evolution.
This chapter presents that advances in biomaterial technologies and tissue engineering strategies to produce clinically useful quantities of cells for use in tissue and organ replacement surgery have grown alongside an enhanced understanding of urothelial cell biology and the physiology of the urinary bladder.
