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What is heart rate variability (HRV)?

Oura reports that heart rate variability (HRV) measures the variation in heartbeat timing, reflecting stress levels and ...
GEN

Where Variability Becomes a Problem for Cell-Free Expression

Cell-free expression (CFE) systems are a staple of biomanufacturing, but their variability–even when identical protocols are followed–can affect qualitative assessments of genetic components. The ...
insider.si.edu

Measuring Quasar Variability with Pan-STARRS1 and SDSS

https://urldefense.proofpoint.com/v1/url?u=http://adsabs.harvard.edu/abs/2014ApJ...784...92M&k=di ZKtJPqj4jWksRIF4bjkw%3D%3D%0A&r ...