The phrase 'improve their activity' is correct and usable in written English.
You can use it to talk about activities that need to be improved such as someone's behavior, performance, or daily rituals. For example: The children were asked to improve their activity in the classroom by being more attentive.
In addition, borate activation in the presence of an aluminum scavenger did not improve their activity, presumably due to ligand transfer from Hf to Al during catalytic reaction, and Hf-complex without aminopyridinato ligand was inactive [34].
Kong et al. reported that doping is one of possible methods to improve their activity [28].
Scientists can introduce new genes and sets of genes, allowing organisms to make novel proteins, or alter existing genes to improve their activity in the cell.
Sulfation of these biphase catalysts does not improve their activity and stability as that of the single phase anatase TiO2 catalyst.
Environmental enrichment (EE) replicates mind-body therapy by providing complex housing to laboratory animals to improve their activity levels, behavior, and social interactions.
Recent advances have focused on applying directed evolution to a variety of enzymes, such as epoxide hydrolase, glyphosate N-acetyltransferase, xylanase and phosphotriesterase, in order to improve their activity, selectivity, stability and solubility.
In a context of high competitiveness, companies have to improve their activities in terms of excellence but also of nature.
Effects of high intensity pulsed electric field treatment were further investigated on antioxidant peptides to improve their activities.
Covalent immobilization of the enzymes onto insoluble supports not only permits their reusability and easy separation of enzymes from the product but also, if properly performed, may improve their activities, stability and hence reduces the cost of process.
In fact, to improve their activities, synthetic analogs of oleanolic acid have been developed and actually are under clinical evaluation as anti-tumoral therapeutic agents for hematologic malignancies.
