The phrase "a gradation in the" is correct and usable in written English.
It can be used when discussing variations, levels, or degrees within a particular context or subject.
Example: "There is a gradation in the quality of the products offered by different manufacturers."
Alternatives: "a variation in the" or "a spectrum in the".
Some of these are placed within quotation marks, others sound like direct quotations but omit the quotation marks; presumably this difference indicates a gradation in the author's confidence in their relative reliability.
In this work, the colloidal approach was used to promote a gradation in the composition of a cermet, based on the mixture of stainless steel and Ti(C,N) during powder consolidation into a bulk part.
From the electron paramagnetic resonance of a Cu2+ probe ion implanted in these materials it was determined that the variation in the compressive moduli with Bloom indices results from a gradation in the relative weightings of two discrete coordination configurations.
A gradation in the size of compound granules (Fig. 3e h) was detected from periphery to the centre of the endosperm.
There is therefore a gradation in the progress of the disease that can be identified according to a timeline that shows the morphostructural modification as a late event, preceded by functional alteration [ 4].
An experimental study in rats has suggested a gradation in the magnitude of the action of NSAID upon the fetal ductus, as the constrictive effect dose-dependent (Momma et al., 1984).
When we examined the performance quartiles, there was not as much of a gradation in gender proportion except the 4th quartile among the 6MWD performance quartiles compared to that seen in the CET-Tend of performance quartiles.
For all of these genes, there was a gradation in expression that was the inverse of that seen in the up-regulated set (Additional file 7: Figure S3).
This confirmed that NKX2-5Y191C aNKX2-5ΔHDΔHD physinteractnteract with chromatin (Kaur et al., 2013) and suggests that a gradation in chromatin tethering correlates with the apparent severity of the NKX2-5 mutation (WT>Y191C>ΔHD>paGFP).
Rowland notes that Cott is here reviewing Thayer's theory and "reinforcing the view that a gradation in shading would act to eliminate the effects of ventral shadowing".
The axial column of Aerosteon does not suggest a clean partitioning based on the number or size of pneumatic spaces, but rather a gradation in pleurocoel form that extends from the anterior cervical vertebrae through the distal caudal vertebrae.
