Example sentences of "[n mass] over a [adj] period " in BNC.

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1 The Commission approved on Dec. 17 , 1989 , for the third framework programme , its key technology research and development initiative , a budget of 5,700 million ECU over a five-year period of which one-third was to be for research into information technology .
2 A stability test involves the accumulation of a substantial amount of data over a prolonged period of time and may require the production of reports at several stages of the test .
3 The accumulation of data over a long period of time is a situation that lends itself well to the use of a microcomputer .
4 The only way that we could definitely ascertain the extent of the increase in recorded crime which is due to changes in reporting and/or recording practices would be if there were available victimization data over a long period .
5 He says on a 500-acre farm the cost of an innocent error in completing the complicated forms might be a loss of more than £100,000 over a two-year period and assured bankruptcy for the farmer concerned .
6 In a prospective study of general practice prescribing involving more than 40 000 people over a 2-year period , Skegg et al. ( 1983 ) found that only three in a thousand of those who had received psychotropics went on to take an overdose of the drugs within the following 12 months .
7 An important aspect would be a study of the progress of a sample of young people over a long period .
8 Escobar , accused of responsibility for the murder of hundreds of people over a 10-year period , including a Justice Minister , an Attorney General , at least one presidential candidate [ see p. 36844 ] and 107 passengers aboard a domestic flight [ see p. 37041 ] , was not expected to stand trial for at least a year .
9 As compared with the more usual situation in which we only know the activity of people over a short period , such data raise some challenging statistical and econometric problems .
10 When the first giraffes began to stretch their necks to reach the leaves of trees , they were choosing a new habit that would guide the future development of their species over a vast period of time .
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