The phrase "active primarily at" is correct and usable in written English.
You can use it to describe the main time or context in which something operates or functions effectively.
Example: "The species is active primarily at night, making it difficult to observe during the day."
Alternatives: "most active during" or "predominantly active at".
CAF-1 deposits a specific histone variant in nucleosomes that is active primarily at the time of DNA synthesis (replicative or repair), suggesting that IR might cause similar defects in DNA and chromatin structure.
Furthermore, the ratios of the metabolite levels between homozygotes (i.e., variant/variant:wild type/wild type) became much smaller as benzene air concentrations increased above 0.1 ppm, suggesting that CYP2E1 1054C–T is active primarily at higher concentrations.
Richard Owen, a young conductor previously active primarily in Europe, has been engaged as music director.
The Canadian pop music duo was active primarily between 1998 and 2005, releasing four full-length albums during that time.
During spontaneous breathing, both the thyroarytenoid and cricothyroid muscles are active – thyroarytenoid muscle activity occurring primarily at the end of inspiration.
Therefore, it could be inferred that this catalyst is becoming less stable at higher temperature and increasing NBE concentration reduces the activity primarily, because the active site gets blocked with NBE.
He had an active general surgery practice primarily at Methodist Hospital, Brooklyn.
Unlike FH and SDH, mutations in IDH1 and 2 are somatic heterozygous missense mutations that occur primarily at the active arginine residues that are critical for isocitrate binding (IDH1: R140; IDH2: R172, R140; Table 1) (Parsons et al., 2008; Dang et al., 2009; Mardis et al., 2009; Yan et al., 2009).
Type 4 NOX stands out as it represents the quantitatively most abundant isoform, is constitutively active, and primarily regulated at the gene expression level.
As a crepuscular animal, it is most active during the dusk and dawn hours, feeding primarily at dusk. it also is active and eats during the hours of dawn, though to a lesser extent.
In Drosophila, SMC1 and Nipped-B are co-localized at multiple locations on the chromosomes, primarily at the promoter regions of active genes [58].
