The phrase "a duration less than" is correct and usable in written English.
It can be used when specifying a time period that is shorter than a certain amount.
Example: "The project must be completed in a duration less than three weeks to meet the deadline."
Alternatives: "a time shorter than" or "a period less than".
At the inlet, a passive and conservative tracer was injected having a duration less than 2%% of the nominal detention time and represented by a square step input.
(4) From the remaining, those samples having a duration less than 0.1 seconds were rejected, to get the final set of vowel "aa" samples for analysis. .
Here it is shown that this restriction can be eliminated, by using a process known as cepstral inversion, when the direct cepstrum has a duration less than τ and cepstral aliasing is insignificant.
However, if a period of active to quiescent transitions (a period without firing) has a duration less than the average time difference between two spikes then this interval does not separate an avalanche into two.
We showed that IOA was low for seizures with a duration less than 30 sec.
In addition, four publications had a slightly shorter follow-up time with a duration less than three years.
Leaky accumulation with a time constant τ ≈ −0.24 s would result in short trials (with a stimulus duration less than a quarter of a second) being essentially unimpaired, while long duration trials would be more strongly impaired.
Importantly, the duration of the relationship does not bias these conclusions since the scale of differences between preferences and actual partners' characteristics do not differ between a sub-sample including only couples with a relationship duration less than the median value and a sub-sample including only couples with a relationship duration equal or superior to 3 years (all p>0.19).
Because lidocaine is an anesthetic agent with a short duration (less than 1 h) [ 25], cerebellar functions should be restored after diffusion and metabolism of the agent.
Seven patients had an early disease, defined as a disease duration less than three years since the occurrence of Raynaud's phenomenon.
Those disturbances are independently associated with a sleep duration less than 6 hours, and sleep medication use, respectively.
