Example sentences of "[adj] [noun pl] over a long period " in BNC.

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1 A case reports and clinical-epidemiological studies have evaluated the cancer risk in patients who have abused anthranoid laxatives over a long period .
2 A case report and clinical-epidemiological studies in patients who have misused anthranoid laxatives over a long period should be considered in a final risk assessment for colorectal cancer in man .
3 Batteries last longer if they are charged and discharged in deep cycles over a long period .
4 However , a syndrome of this severity is not commonly reported in foals under natural conditions , probably because larval intake is continuous during grazing ; it has been show experimentally that foals may tolerate large numbers of larvae administered in small doses over a long period .
5 Changing the law to place NationalPower and Power-Gen under a legal obligation to agree fixed contracts for specified tonnages over a longer period than the current year was hinted at by Michael Heseltine , the President of the Board of Trade , in evidence to the energy select committee last year .
6 Cook has incidentally been given a testimonial season by Transvaal for his outstanding services over a long period .
7 The incubation period may be up to one year , and this makes it difficult in many cases to decide from whom the warts have been caught ; not only that , but they often seem to have been seeded on the principle adhered to by market gardeners , to give successive crops over a long period .
8 Staggered working hours would spread travelling times over a longer period of the day and in many cases allow more efficient use of factories , offices , schools and the equipment therein .
9 A table ( see below ) comparing opening and closing equity book value helps to summarise the main changes over a long period .
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