The phrase "a time scale of three" is correct and usable in written English.
It can be used when referring to a specific duration or measurement of time, often in contexts like project planning or scientific studies.
Example: "The experiment was conducted over a time scale of three weeks to ensure accurate results."
Alternatives: "a duration of three" or "a period of three".
Thats how the first improbably combinations of complicated organic molecules could have occurred on a time scale of billion of years.
This may imply that the association of dissimilar polymers by the specific interaction is a very slow rate process on a time scale of thousand minutes.
Pulses were administered at 0.5 Hz and their duration was as brief as possible, in order to diminish light disruptions to the ants (see SI-2), as well as to reduce bleaching which we measure to be negligible on a time scale of five hours (see SI-3).
The proposed control methodology uses an hour-ahead regulating power plan in a time scale of five minutes to compensate the real time active power imbalances in the power system.
The SPI was calculated for a time scale of six months (ending in May) in a year corresponding to the growth period of common crops (wheat) in the study area (Vergni and Todisco 2011).
At the Soufrière Hills Volcano, Montserrat, a time scale of six months was chosen for hazard and risk assessment during the volcanic emergency (Sparks and Aspinall 2004), this period being long enough for authorities to make and implement mitigation plans but judged short enough by the science assessment team for making useful hazards forecasts.
Complete regulation of C-MYC expression by doxycycline was previously observed to have a time scale of four days [22], [26].
Laboratory tests were considered in the analysis if performed in a time scale of two months around the first visit.
Long-term environmental stability could also be obtained with a time scale of several hundred to a thousand hours [2, 3].
