The phrase "a relative quantity of" is correct and usable in written English.
It can be used when discussing measurements or comparisons that are not absolute but rather in relation to something else.
Example: "In this experiment, we measured a relative quantity of the substance to determine its effectiveness compared to the control group."
Alternatives: "a comparative amount of" or "a proportional quantity of".
Threshold cycle numbers for the various PCRs were compared to the appropriate standard curve to calculate a relative quantity of starting cDNA for each housekeeping gene and each target gene within each individual sample tested.
So, x ij represents a relative quantity of minor alleles of samples.
These values represent a relative quantity of water and fat in the volume of interest.
The genes analyzed were expressed at a relative quantity of ≥1 in miR-1 null vs wild-type hearts based on their FPKM (upper).
Genes used for this analysis were expressed at a relative quantity of ≥1 based on FPKM in miR-1 null vs wild-type hearts.
DOI: http://dx.doi.org/10.7554/eLife.01323.027 10.7554/eLiFigure23.028 Figure 4 figure supplement 1. MicroRNA target enrichment analysis of genes that were expressed at a relative quantity of ≥1 in the miR-1 null vs wild-type hearts.
(a d) Relative quantities of human IL-1β (a) human IL-6 (b) human CCL-2 (c) and human GM-CSF (d) mRNA were measured by real-time QPCR analysis in human bronchial epithelial BEAS-2B cells.
This can be either a relative quantity, for example, determining the level of heteroplasmy for a particular mitochondrial allele, or an absolute quantity, for example, measuring gene expression.
The void index is a relative quantity measuring the position of the current void ratio of a clay against the void ratios of the clay at two specific vertical effective stresses (i.e., σv′ = 100 kPa and σv′ = 1000 kPa).
The combiner phase is always a relative quantity, thus without loss of generality we may select θ1=0 always.
Fig. 5 The net ecosystem exchange (NEE) plotted over (a) the relative quantity of pioneer trees (in terms of stem count) in the forest (PFT 4 and 8) and (b) the basal area of all trees in the forest.
