The phrase "at longer intervals" is correct and usable in written English.
It can be used to describe a situation in which something occurs less frequently or at greater lengths of time than before. For example, "We have decided to hold board meetings at longer intervals, so instead of once a month, we will now meet once every two months."
African lungfishes surface for air about every 30 minutes or, in some cases, at longer intervals.
(There are packages for the child's second year, as well, but at longer intervals).
In contrast, prime borrowers with adjustable-rate mortgages enjoy fixed rates for five or seven years, with interest rates raised at longer intervals after that.
Under a proposed rehabilitation program, Boonen will see a psychiatrist once a week to begin, then at longer intervals as needed over the next year.
In addition, rotations generally occur at longer intervals than the typical product cycle so that engineers can see and learn from the results of their work.
But to allow batch transfers and cut down the connection latency, a resident database is available which can be synchronized with the remote database at longer intervals.
The poorer sub-Saharan migrants who cannot afford a full-package smuggling, try to meander along the routes by the little means they have, fragmenting their journeys at the 'migration hubs' at longer interval [ 7, 9].
They also suggest that testing women negative for high-risk HPV at longer interval and strictly following-up women who are HPV positive could be an effective strategy for cervical cancer screening.
A differential in the slope might be produced by a single mechanism with a temporal decay curve that yielded strong linkage of dots at very short intervals and weak linkage at much longer intervals.
Results revealed that mistaken identifications of the tattooed filler increased significantly at the longer retention intervals, while recall for the misinformation decreased at the longer intervals.
I tried, gently, to wake him, standing self-consciously at the side of his bed, calling: "Grandpa, it's Alex" at ever longer intervals, but he wouldn't stir.
