The phrase "a defined fraction" is correct and usable in written English.
It can be used in contexts where you are specifying a particular fraction that has been clearly identified or established.
Example: "In the equation, we need to multiply the variable by a defined fraction to achieve the desired result."
Alternatives: "a specified fraction" or "a particular fraction".
We therefore isotopically labeled a defined fraction (10%) of either ammonium or nitrate and quantified the relative amount of 15N label in the final biomass.
Each CFB is modeled using a very simple structure in which the reacting gas is only in contact with a defined fraction of the well mixed solids.
Would these Elizabeth Warren haters suggest that some Cherokee who's only 1/325th Cherokee is somehow not worthy of being Cherokee?" What Keene is referring to is the increasing practice of tribal nations to move away from blood quantum, where a potential tribal member must show a defined fraction of Indian blood, toward what's known as descendancy enrollment.
This approach used a restriction enzyme and a size selection step to generate and sequence a defined fraction of a large genome.
To consistently melt a defined fraction of DNA, a series of constant extension experiments was performed.
Together, these species occupy a defined fraction of the intracellular space and make it unavailable to other molecules.
Thus, it is possible to produce a semisolid slurry with a well defined fraction of solid using technical Mg alloys with very low contents of eutectics like the AZ31 MgAl3Zn1), AZ61 (MgandZn1) alloysloys with rare earths.
Nevertheless, since many lowly expressed genes are already known to have important regulatory functions [ 25- 27] this may also hold true for a not yet defined fraction of the alternative isoforms we detected via normalized libraries.
We discuss here alternative strategies that enable cells to re-create their own microenvironment in vitro, using carbohydrate-based macromolecules as culture media additives that create an excluded volume effect at defined fraction volume occupancies.
We defined fraction 4 6 as buoyant membrane fractions enriched in caveolae and proteins associated with caveolae.
A line measure had previously been obtained by diluting the methylene blue stain in defined fractions.
