The phrase "sporadic intervals" is correct and usable in written English.
It can be used to describe occurrences that happen irregularly or at unpredictable times.
Example: "The rainfall in the region occurs at sporadic intervals, making it difficult to predict the weather."
Alternatives: "irregular intervals" or "occasional intervals."
However, at seemingly sporadic intervals -- usually around the time of a scheduled visit to the school by district officials -- students might be handed a suspension for minor offenses.
Along with George Antheil, Lamarr tweaked radio frequencies at sporadic intervals between transmission and reception, creating a system in which messages could not be easily intercepted.
Bill payers could see the lights fade at sporadic intervals for a total of nine hours during the winter of 2015-16 as the National Grid seeks to balance out supply and demand in the system.
Mount Taftān, a massive cone reaching 13,261 feet (4,042 metres) in southeastern Iran, emits gas and mud at sporadic intervals.
I expect similar "metadata muddying" networks to spring up for voice calls; maybe they'll onion-route calls a la Tor, maybe they'll just be apps that cause your phone to make encrypted calls with no actual content to other phones in the network at sporadic intervals, so that large quantities of fake metadata gets mixed in with the real stuff.
Right now most patients must go to the doctor and wait to be tested at sporadic intervals, making it hard to detect if there's a spike in blood pressure in the moment when it becomes critical, and even harder to tell if someone is suffering from sleep apnea, as that is something that happens while the person is asleep.
There is a CpG island upstream of this cluster which contains a 4-kb CpG-sporadic interval.
Of the CpG related miR genes, 50 locate within CpG islands and 9 closely flank CpG islands with a <600-bp CpG-sporadic interval; an additional 70 miR genes are near CpG islands with a 0.6 ~ 10-kb CpG-sporadic interval.
In addition, our noise titration results reveal pronounced transient heartbeat chaos precipitated by sporadic RR interval spikes, which are intrinsic to the abnormal cardiac dynamics in CHF (Fig. 5C).
Our results identified circadian-dependent heartbeat chaos which was linked to the HF component (respiratory sinus arrhythmia, RSA [32]) in young/elderly subjects, and transient heartbeat chaos which was linked to sporadic RR interval spikes.
But rather than sending out an immediate alert to your friends letting them know that you'd like some help, the site instead sends them sporadic Email digests at intervals they've set.
