Example sentences of "have [been] shown that [art] " in BNC.
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| 1 | It has been shown that a potency of a homoeopathic remedy has a higher viscosity than a straight dilution , without succussion , of the same remedy repeated the same number of times , suggesting that large molecules are present in the potency which do not occur in the straight dilution . |
| 2 | Although most foods contain potassium , especially potatoes and green vegetables , it has been shown that a high proportion of elderly people select a diet low in potassium ( Davies , 1981 ) . |
| 3 | It has been shown that a number of older women remain ‘ active initiators ’ as in earlier life , rather than becoming ‘ passive responders ’ , even when being cared for ( Evers , 1983 ) . |
| 4 | It has been shown that a broadened serological response occurs after immunization of HIV-infected individuals and that T-cell responses increase drastically . |
| 5 | It has been shown that a single instruction is sufficient ( in theory ) for a general-purpose computer ( Van der Poel 1956 ) ; however , instead of a theoretically sufficient instruction set , what we require is an instruction set which provides a practical set of operations in which applications can be programmed . |
| 6 | It has been shown that a 573 bp fragment of the histone H1 proximal promoter region is sufficient to drive efficient transcription of a reporter gene in F9 cells ( 15 ) . |
| 7 | Most importantly , it has been shown that a positive school ethos and high staff morale will increase pupils ' involvement in school activities and combat a lack of motivation . |
| 8 | It has been shown that the best time of year for such exams would be in March or April when temperatures are lower . |
| 9 | In particular , it has been shown that the proper time between the collision and the subsequent singularity is inversely proportional to the square root of the amplitudes of the impulsive components of the approaching waves . |
| 10 | In the Bell-Szekeres solution , it has been shown that the hypersurface on which the opposing waves mutually focus each other is a Cauchy horizon rather than a curvature singularity . |
| 11 | It has been shown that the human conscience is a product of civilisation , and its existence the responsibility of the human race . |
| 12 | In fact , more generally it has been shown that the most important single cause of violence in labour disputes in the USA during the early years of the twentieth century , involving at least 700 deaths and several thousand serious injuries , was the denial of union recognition for purposes of collective bargaining ( Taft and Ross , 1979 ) . |
| 13 | It has been shown that the structural dimensions of collective bargaining vary greatly between industrialised countries , since they reflect the distinctive economic and social contexts in which they are embedded . |
| 14 | In split-brain patients it has been shown that the left hemisphere retains language function , the right does not . |
| 15 | Some work has been done on monkeys with restricted visual cortex ablations ( Mohter and Wurtz 1977 ; Weiskrantz and Cowey 1970 ) and , in these , it has been shown that the ability to detect light flashes and make saccadic eye movements to fixate stimuli within the blind field is retained . |
| 16 | It has been shown that the horizontal gradient of vertical disparity between the images in the two eyes also contains information about the fixation distance . |
| 17 | Recently , it has been shown that the injection of wheat germ agglutinin ( WGA ) coupled to labels such as colloidal gold or HRP produces effective labelling of cells lining the amniotic cavity ( 24 ) , It is likely that other high molecular weight molecules which will bind to epiblast or ectoderm cells , such as other lectins or perhaps antibodies ( see Chapter 2 , Section 4 ) , may prove suitable labels for selectively marking these cells or cells lining other cavities in the embryo . |
| 18 | Elsewhere , it has been shown that the closure of village schools can often trigger a rapid decline in rural services ( Lee 1960 ) . |
| 19 | More recently , it has been shown that the aim of preservation has been somewhat relaxed , and some attention has been given to non-agricultural uses of green belts , particularly for recreation ( Hebbert and Gault 1978 ) . |
| 20 | Once it has been shown that the matter in question always reacts in the same way under fixed conditions , a theory can be devised to explain its behaviour . |
| 21 | It has been shown that the Upper Freshwater Bed of the Cromer Forest Bed dates probably from an early interglacial , but there is no sign of a marine transgression in the bed although it covers the middle part of the interglacial , when such a transgression would be expected . |
| 22 | In particular , it has been shown that the conditions for a voting procedure to be strategy proof ( i.e. , no one has an incentive to vote strategically ) are equivalent to the Arrow conditions . |
| 23 | It has been shown that the development of pre-school provision has a very marked effect on later offending . |
| 24 | It has been shown that the ratio of the flow time of a polymer solution t to that of the pure solvent t o is effectively equal to the ratio of their viscosity if the densities are equal . |
| 25 | It has been shown that the development of ascites is also common in acute liver failure , and has been related to the presence of severe portal hypertension . |
| 26 | The number of strands in the tight junctions may correlate inversely with the permeability of the epithelium and it has been shown that the crypt tight junctions have fewer strands than the villous junctions . |
| 27 | It has been shown that the therapeutic hypochlorhydria which is the primary action of these drugs is associated with increased gastric bacterial growth , reduction of nitrate to nitrite , and increased concentration of carcinogenic N-nitroso compounds in the gastric juice . |
| 28 | It has been shown that the perinuclear antineutrophil cytoplasmic antibody indirect immunofluorescence test may help to differentiate between Crohn 's disease and ulcerative colitis in inflammatory bowel disease patients . |
| 29 | For melanoma , it has been shown that the de novo expression of ICAM-1 correlates with an increased risk of metastasis . |
| 30 | The dose of 40 mg omeprazole once daily is higher than that recommended for peptic ulcer therapy , but is regularly used in reflux oesophagitis , while a duration of five days was chosen because it has been shown that the effect of omeprazole on gastric acid and serum gastrin stabilises after three days of treatment . |