Example sentences of "been shown [prep] [be] [adj] [prep] " in BNC.
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| 1 | The presence of at least some specialist assistance has been shown to be essential for raising the standards of the whole team . |
| 2 | 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 . |
| 3 | Some authorities maintained that it was the first time a single drug had been shown to be useful in controlling psychotic patients . |
| 4 | To this end , two companies , Hoechst , whose product Trental ( oxpentifylline ) had recently been shown to be useful in the treatment of chronic venous ulceration , and Perstorp Pharma whose new product , Iodosorb ointment ( cadexomer iodine ) , useful in the treatment of infected ulcers , had recently been promoted , were contacted . |
| 5 | The technique has been adapted to suit the format of text recognition data , and has been shown to be effective as a means of identifying correct words from alternative candidates . |
| 6 | These drugs have been shown to be effective against all stages of lungworms with a consequent amelioration of clinical signs . |
| 7 | 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 . |
| 8 | Recently , a non-peptide substance P antagonist ( CP 96345 ) has been shown to be effective in animal models of pain and inflammation . |
| 9 | Non-mydriatic fundal photography is useful for detecting retinopathy in patients with diabetes and has been shown to be effective in identifying previously unrecognised retinopathy when used in the community . |
| 10 | So , this has been shown to be effective in moderating the toxic events which occur in grand negative shock . |
| 11 | Recombinant interferon alfa has been shown to be effective in some patients with chronic hepatitis C. There are now 13 published randomised controlled trials of interferon alfa ( dose : 1–10 MU ) in chronic non-A , non-B hepatitis . |
| 12 | In this study nifedipine plus diuretic lowered blood pressure more effectively than propranolol plus diuretic , which has previously been shown to be effective in black hypertensive patients . |
| 13 | At the same time anti-diarrhoeal efficacy is maintained , since a dose of even 1 mg has been shown to be effective in a randomised double blind study of acute diarrhoea in adults . |
| 14 | The confounding factors were patients ' characteristics that had been shown to be predictive of increased perinatal risk . |
| 15 | Colorectal tumour cell lines may also express receptors specific for gastrin , and gastrin has been shown to be mitogenic to certain colorectal cancer cell lines in vitro and in transplantable tumours in vivo . |
| 16 | But this general expectation has already been shown to be misleading in his approach to the monastic life of the community at Canterbury . |
| 17 | In experimental animals , gangliosides have been shown to be protective in a number of conditions including anoxic ischaemia , models of Parkinson 's disease , central nervous system trauma , autoimmune neurological disease , and peripheral nerve injury . |
| 18 | Endoscopic treatment has been shown to be beneficial in bleeding patients . |
| 19 | The creatine kinase increase in all nine infants has been shown to be due to the muscle isoenzyme . |
| 20 | 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 . |
| 21 | 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 . |
| 22 | As the plaintiff had not been shown to be guilty of contributory negligence , he was entitled to recover damages , on the grounds of negligence . |
| 23 | This may be important as lithocholic acid has been shown to be genotoxic in in vitro studies . |
| 24 | Such elements are relatively poorly characterized , but different structural features such as acidic regions with amphipathic helices , glutamine-rich , proline-rich , and serine/threonine-rich domains have been shown to be involved in activation of transcription ( 36,64–66 ) . |
| 25 | In other systems , far upstream and/or downstream sequences of tissue-specific genes or gene families have been shown to be involved in position-independent , copy number-dependent expression of associated genes in transgenic mice . |
| 26 | Stored serum from this time has subsequently been shown to be negative for antibody to hepatitis c ( riba assay , chiron corporation ) . |
| 27 | Although the mechanism by which dowsing works is not understood , the method has been shown to be capable of accurately locating buried archaeological features . |
| 28 | Salmon have been shown to be capable of the necessary olfactory discrimination , but the most direct evidence that they use their sense of smell comes from experiments , of the kind first performed by W. J. Wisby and A. D. Hasler , in which the salmon 's olfactory sense was impaired . |
| 29 | Antibody L2 has been shown to be specific for the C-terminus of amidated gastrins , 109–21 for the C-terminus of Gly-extended gastrins , and , antibody L289 for the C-terminus of progastrin . |
| 30 | In this instance health reports specify the pathogens which have been shown to be absent from the animals . |