The phrase "altered by addition of" is correct and usable in written English.
It can be used when describing a change or modification that has occurred due to the inclusion of something additional.
Example: "The final design was altered by addition of new features that improved functionality."
Alternatives: "modified through the inclusion of" or "changed by the incorporation of".
This reaction mechanism can be altered by addition of sodium fluoride to the supporting electrolyte.
On the other hand, the composition of the core could be altered by addition of other metals.
For the exponential feeding strategy, culture performance was not altered by addition of optimal precursor concentrations, whereas sialic acid contents increased 1.43-fold compared to the control.
The mass transfer pathway may be altered by addition of CO2 to the polymer solution before spraying, resulting in greater and more uniform porosity.
Importantly, the DGC activity of these variant proteins was not altered by addition of cyclic GMP (Supplementary Figure S4).
IL-1α enhanced the release of the gelatinases, and this release was not significantly altered by addition of dibutyryl-cGMP.
Direct and indirect observations tend to support the stepwise mutation model at microsatellite loci (Schlötterer and Tautz 1992; Weber and Wong 1993; Thuillet et al. 2002), by which their sequence is altered by addition or deletion of one repeat at a time.
As a result the bulk rheological properties of intestinal mucus were little altered by the addition of low concentrations of alginate.
We altered T2/Onc by addition of the carp ß-actin promoter [33], which has been used extensively to drive constitutive and ubiquitous expression in fish species [34].
Taken together, we speculate that the cross-linking density of nanocomposite hydrogel was not significantly altered by the addition of 1 2 wt % of Laponite.
This morphology was not altered by the addition of 25 ng/mL of FGFs 4 or 8.
