Example sentences of "persist for many [noun] " in BNC.

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1 Activity-dependent synaptic potentiation occurs within milliseconds and can persist for many hours in the anaesthetised animal or in the in vitro hippocampal slice preparation , and for days when induced in the freely moving animal .
2 It would persist for many generations .
3 It can persist for many years .
4 We found that chronic constipation in young children can persist for many years .
5 Once a ridge has developed , it often persists for many weeks .
6 It 's a help , but not a complete solution to the problem because once chlorine has been released in the stratosphere , it persists for many years and goes on destroying ozone .
7 More surprisingly , sometimes a trough develops at about the same position , 15 degrees upstream of the mountains : and this pattern also persists for many days or weeks .
8 The process of separation and demarcation was not a rapid one , and considerable ambiguity in the use of the term ‘ farrier ’ and ‘ farriery ’ persisted for many years after the establishment of the College , reflecting the degree to which the occupation of farrier and veterinarian overlapped .
9 The solvents persist for many years , and can take a long time to be degraded or removed ; the good news is that , unlike some other forms of pollution , spillages of volatile organochlorines are apparently becoming rarer as awareness of the consequences of poor practice increases .
10 The rash may be barely visible , and may only be present for a few days , or it may be widespread and obvious and persist for many weeks .
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