The phrase "altered either by" is correct and usable in written English.
It can be used when discussing changes made to something by one or more agents or factors.
Example: "The data can be altered either by user input or by automated processes."
Alternatives: "modified by" or "changed through".
For some, however, astrology is not an exact science like astronomy but merely indicates trends and directions that can be altered either by divine or by human will.
In this case, the feed could be altered either by removing O2 at the cost of an additional unit operation, or by increasing the amount of inert gas (i.e., N2).
Meanwhile, BV-2 cells pretreated with C60 COOH showed increased phosphorylation of Drp1 at Serine637 compared with LPS-treated control cells (Fig. 4a); however, protein levels of total Drp1 and other mitochondrial fission and fusion factors, such as Fis1, Mfn1, Mfn2, and Opa1, were not significantly altered either by LPS stimulation or C60 COOH pretreatment (Fig. 4a, b).
Shelley was particularly interested in "the fragility of individual identity" and often depicted "the way a person's role in the world can be cataclysmically altered either by an internal emotional upheaval, or by some supernatural occurrence that mirrors an internal schism".
Peak leg blood flow was not altered, either by rhEpo or by hypoxia (Fig. 6E).
Otocysts were left intact or altered either by ligation of the vestibular labyrinth or by resection of the endolymphatic sac.
Furthermore, mesothelial function is likely altered either directly or indirectly by the exposure of the lung to asbestos fibers.
In the kidney, the expression of several genes known as markers of kidney injury and cell regeneration was significantly altered, either up or downregulated, by OTA.
DCPA may regulate HIF-1α expression by altering either the stability of HIF-1α protein, or by inhibiting its mRNA levels.
A novel methodology for electrode kinetic studies is proposed by altering either the amplitude, ESW, or the frequency, f, of a Square wave voltammetry (SWV) experiment.
Although seemingly unrelated, they will all influence sales by altering either how convenient, attractive, or normal (CAN) it is to purchase a healthy target food.
