Example sentences of "been shown to be " in BNC.
Next page| No | Sentence |
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| 1 | ‘ but invariably , even when we have needed to correct or update details in our reports , the sad fact remains that the overall portrait of horror has been shown to be true and if anything , understated . ’ |
| 2 | This respect for authority has appeared throughout the examples given , but it has also been shown to be a respect within certain limits . |
| 3 | Yet since 1987 , the level of child sexual abuse diagnosed in Cleveland has been shown to be no higher than elsewhere in the country , and an increasing number of people locally take the view that she should be treated in the same way as myself — allowed to return to work as a paediatrician in Cleveland , but restricted from working in child abuse for the time being . |
| 4 | Again he is taking over precisely the ‘ modern ’ definitions and oppositions , between the normal and pathological , the natural and unnatural , etc. , which have been shown to be both confused and ideological in the narrow sense . |
| 5 | The idea of the unchanging east was widespread in eighteenth- and nineteenth-century thought and it seems that Marx accepted this view , although it has subsequently been shown to be misleading . |
| 6 | Often , both in America and in Britain , hostile takeovers have been shown to be reckless , mistaken and damaging . |
| 7 | In these experiments , two kinds of learning have been shown to be possible in a nervous system with fixed cell numbers and connections , by altering the effectiveness of synapses . |
| 8 | It was generally believed that there was some animosity between ‘ Lenny ’ and Herbert von Karajan , although this has never been shown to be true , so the atmosphere in the Philharmonie was electric . |
| 9 | By using chromatofocusing techniques and enzyme assays , the enzymes involved in the biocontrol action of Trichoderma have been shown to be chitinases. glucanases and proteases . |
| 10 | ( The selenium analogue of has recently been shown to be a semiconductor . ) |
| 11 | Mental handicap can also be reduced in cases where the likelihood of having a mentally handicapped child has been shown to be higher . |
| 12 | Thirdly , the only course of action if some form of handicap is detected , is to have an abortion , as the handicap has already been shown to be present in the foetus . |
| 13 | So the results of this trial will be of enormous benefit to mothers as in future they will be offered a treatment which has been shown to be effective . |
| 14 | However , the sophisticated methodology of land-use planning , as well as the policy instruments of the programme , have recently been shown to be very fragile and unable to prevent large areas of land previously left uncultivated ( because of susceptibility to erosion ) , being once more put under the plough . |
| 15 | Some authorities maintained that it was the first time a single drug had been shown to be useful in controlling psychotic patients . |
| 16 | The presence of at least some specialist assistance has been shown to be essential for raising the standards of the whole team . |
| 17 | This may be important as weight loss with accompanying reduction of blood pressure in obese non-diabetic hypertensives has been shown to be accompanied by reduced levels of plasma renin activity and aldosterone ( Tuck et al , 1981 ) . |
| 18 | Serum triglyceride levels are generally unaltered in both short- and long-term studies ( Dodson et al , 1985 ) , providing unrefined carbohydrate is used , as opposed to refined carbohydrate which has been shown to be hypertriglyceridaemic in some studies ( Reaven , 1980 ) . |
| 19 | β-Thromboglobulin levels have been shown to be elevated in various types of vascular disease . |
| 20 | Since the late eighteenth century , there had developed the ‘ perfectionist doctrine ’ which claimed that ‘ government of the people by the people ’ was most appropriate , but according to Bryce , this had now been shown to be wrong . |
| 21 | The festivals have been shown to be relatively successful by some indicators . |
| 22 | The trick will be to distil these desirable attributes from the new arrangements and to discard the harmful elements ; once they have been shown to be so . |
| 23 | Some techniques , such as cost analysis and cost minimisation analysis , proceed on the basis that the alternatives under consideration have been shown to be equivalent in effectiveness . |
| 24 | Alternatively anaerobic digestion of the slurry by bacteria at a temperature of about 35°C has been shown to be effective in alleviating odour emission . |
| 25 | For example , brief counselling by general practitioners has been shown to be as effective as benzodioazepine tranquillizers for patients with minor affective disorders of recent onset ( Catalan et al. 1984b ) . |
| 26 | Cannabis Teenagers often insist that cannabis is harmless , but it has been shown to be a high risk for certain users . |
| 27 | Prediction has been shown to be difficult , if not dangerous , when one thinks of all those worthy , well-written , sincerely felt , and critically-supported books that remain unread ( see Manning , 1969 ; Avery , 1972 ) , and those obvious , apparently superficial and mundane pot-boilers that gain young readers ' affections . |
| 28 | Supposition abounds not least because the custom has been shown to be much older than the legend to which its origin is attributed . |
| 29 | The remedies of the homoeopathic materia medica have not , as has happened to their orthodox counterparts , had to be abandoned , as one after another they have lost their efficacy or have been shown to be too toxic to be used safely . |
| 30 | Contrary to the official establishment line on fluoride , this substance has never been shown to be essential for body function , and its role in protecting teeth from dental caries is extremely doubtful . |