The phrase "activity is based on" is correct and usable in written English.
It can be used to indicate the foundation or underlying principles of a particular activity or process.
Example: "The success of the project is largely due to the fact that the activity is based on thorough research and analysis."
Alternatives: "activity relies on" or "activity is grounded in".
The assay for detection of caspase activity is based on the ability of the active enzyme to cleave the chromophore p-nitroanilide (pNA) from the labeled substrate DEVD-pNA.
Our current understanding on how IL-2 induces antitumoral activity is based on its ability to (re-) activate the suppressed tumour-specific immune responses by upregulation of proinflammatory cytokines, expansion of CD4+ cells and mainly by enhancement of natural killer cell activity and induction of a Th1 immune response (Henney et al, 1981).
"There are whole villages on the outskirts of Cairo and elsewhere where the bulk of economic activity is based on trafficking in women and forced marriages," said Zahra Radwan of US-based rights group Global Fund for Women.
Relative activity is based on the activity before incubation.
Much of the local economic activity is based on coffee growing.
Changes in Sea Level - This activity is based on real data.
Much of this activity is based on recent scientific research showing that the brain is developing into late adolescence.
The main economic activity is based on petroleum exploration, drilling, production, refining, and research.
My research activity is based on a new pharmacological approach for treating obstructive sleep apnea (OSA) targeting specific traits causing the disorder.
This activity is based on the results obtained within previous Topological UML modeling activity problem domain functioning analysis.
There is very little good-quality research and much activity is based on case reports and series.
