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

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1 Field-work took place over a twelve-month period between 1987 and 1988 , and was sufficiently prolonged to avoid the criticism which brief ‘ smash-andgrab ’ ethnographies often deserve .
2 Over a twelve-month period a field-worker 's persistent inquisitiveness is bound to become something of an irritant , and van Maanen notes how field-workers can not expect to be liked by all respondents ( 1982 : 111 ) .
3 Over a trial period , adjust preset VR1 slightly to provide a timing of 24 hours or as required .
4 To limit the operations of non-NAFTA car companies in the North American market , tariffs would be eliminated on intra-regional trade in cars only if each NAFTA country guaranteed , over a phase-in period of eight years , 62.5 per cent local manufactured content and 60 per cent on components .
5 There will be no material ownership or management relationship between the two after the spin-off , although they will continue to provide products and services to each other over a transition period .
6 On average , a body is injected with approximately 12–16 pints of the one and a half per cent or two per cent solution and this takes place over a time period of approximately one to two hours .
7 Roy Coyle , who watched two of his first team squad sustain fractured legs over a five-day period last week , made a bold move into the transfer market on Thursday and signed former Sunderland midfielder , Paul Lemon for an initial period of a month .
8 Beats per second derived from an observer counting fast-phase eye movements over a 10–20s period .
9 This routine is designed to increase a person 's pulse rate , and then to monitor its decrease over a set period of time .
10 The next step would be the international negotiation of a target for worldwide emissions over a set period , perhaps a decade or two .
11 In minutes , the computer will produce 18 columns of net and discounted cash flows presented over a set period of time .
12 The proposal is to guarantee a place on ET , or any other training , education , pre-employment course , for those who have been out of work over a set period of time .
13 Performance standards could be set for the team based on a percentage reduction in those losses over a set period .
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