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

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1 Erm so therefore I would say in er theory er my understanding would be that yes we could know whatever you wanted to know about particular fields like every two o'clock over a period of a year or whatever .
2 The forecaster would search past time-series of data for consistent evidence of : * seasonal variations ( which are for instance marked in the case of holiday or toy sales ) over a period of a year .
3 In South Glamorgan , over a period of a year , a 15-year-old male took 15 cars and was involved in six house burglaries , one handling offence and six thefts .
4 This trial is the first to prospectively follow elemental diet or prednisolone induced remission in adult patients over a period of a year .
5 He admitted ten charges of possessing and supplying cannabis and speed over a period of a year .
6 The weights are determined from the results of the annual Family Expenditure Survey which covers about 7,000 households selected from all parts of the UK : each member of the household over sixteen years of age is asked to provide information on his or her spending behaviour over a period of a fortnight and also to describe any longer-term expenditures .
7 The Survey was based on an examination of the book application forms ( commonly referred to as ‘ call-slips ’ ) submitted by readers over a period of a fortnight .
8 These long-term priming effects are explained , within the logogen model , by assuming that after threshold has been reached activation dies down rapidly at first over a period of a second or so , but does not quite reach the normal resting level : there follows a long period during which there is very slow decay of residual activation — a period measured in hours or even days .
9 So , taking account of the polonium , local people relying mainly on local milk , meat and vegetables could expect doses over a period of a couple of years of about 4 to 15 rems ; more incidentally , than people at Hiroshima within 2 km of the bomb .
10 In each case a small working party met within SHHD over a period of a number of months .
11 He said it would change and tone a man in three five-minute sessions over a period of a week .
12 The next part of the treatment is to ask him to visualize such a situation over a period of a week or two while , at the same time , trying to refrain from the sexual act itself — although kissing and caressing his partner , whether in bed or not , is to be encouraged .
13 Another case study of an elderly lady in poor health who slept very little , by Ray Meddis and associates , found that her sleep was light and fitful and , over a period of a week , she only achieved one night 's proper sleep .
14 Holding that the dismissals were fair , the tribunal said that , whilst it accepted that the union did not specifically accept what was proposed by the company , it concluded that , by its continuing and sustained silence over a period of a month , the union had agreed to the compulsory redundancies being handled in the way the company had proposed .
15 Begin by exercising moderately for 5–10 minutes per day , and build up gradually over a period of a month .
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