Example sentences of "over a [adj] [noun] period in " in BNC.
Next page| No | Sentence |
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| 1 | The 30 second commercial is a variation on the successful launch advertising and is scheduled over a two month period in England and Wales . |
| 2 | Individual faecal excretions were collected over a four day period in 500 ml polythene clip top containers . |
| 3 | This study was designed to compare the efficacy and safety of oral fluticasone propionate with prednisolone over a four week period in the treatment of active colitis . |
| 4 | The aim of this study was to examine the pattern of acquisition of H pylori infection over a 21 year period in a group of 141 adults who had blood samples and serum stored in 1969 , 1978 , and 1990 . |
| 5 | By measuring H pylori antibody titres in serum samples collected and stored between 1969 and 1990 , we aimed at describing the pattern of acquisition of H pylori infection over a 21 year period in an adult population and thereby to determine the explanation for the higher prevalence of H pylori antibody with increasing age found in Western society . |