Example sentences of "it [verb] be shown " in BNC.

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1 Within the cochlea , for example , it has been shown that there are endings that respond preferentially to sounds of high rather than low pitch .
2 ( 5 ) Very recently it has been shown that transplants of the SCN can be used to pass rhythmicity from one animal to another .
3 It has been shown in some animal species that there are nerves running from the eyes to the SCN .
4 It has been shown that , in some animals , one of these is that lithium slows the free-running period of the body clock .
5 Following a series of projects in which it has been shown that mills and large warehouses may satisfactorily be converted into dwellings , some interest has been shown in the possibility of treating redundant factories similarly .
6 It was one of the truly marvellous innings , one that no one who saw it could ever forget ; since it has been shown on television virtually every time rain has stopped play in any match since , it would be almost impossible to have forgotten it anyway .
7 However , with recent advances in information technology it has been shown that automation of all or some of these processes will provide an effective way forward .
8 It has been shown time and time again that , if we follow the path of kindness and understanding begun by Xenophon , there is a more successful and gratifying way of training horses — as illustrated so long ago by Alexander the Great with his charger Bucephalus .
9 However , it has been shown that this is not the case .
10 It has been shown that during the period there is flow of menstrual products backwards up the fallopian tubes and even into the abdominal cavity .
11 It has been shown that inactivated herpes virus is more capable of inducing cancerous change in certain cells than the normal virus , and the possible risks attached to such vaccines vastly outweigh any dubious advantages .
12 This matter of cellulose breakdown is of vital importance to the whole question of the nutrition of the living cells , for it has been shown by experiment that raw cellulose can be injurious to plants as it is indigestible to animals , and in both the soil and the digestive tract of herbivora , cellulose decomposition is largely performed by fungi .
13 It has been shown , for example , that levels of violence during industrial disputes fell in the first three-quarters of this century , but that this trend has been reversed more recently ( Geary , 1985 ) .
14 In this way it has been shown , for example , that the muscles of the newt always come from a particular region of the early embryo , and the eye from quite a different region , and the gut from another .
15 It has been shown that the best time of year for such exams would be in March or April when temperatures are lower .
16 It has been shown that many additives are responsible for behavioural problems among young people , such as irritability , clumsiness , excitability and aggressiveness .
17 It has been shown in Chapter 4 that this relationship is not always a comfortable one .
18 It has been shown that only physiological concentrations of insulin c. 30–40 μ U/ml are required for such an effect ( De Fronzo , 1981 ) .
19 Using these techniques it has been shown that thromboxane A 2 is a potent contractor of isolated vessel segments from several species including coronary arteries from pig and cattle , human umbilical artery and rabbit aorta ( Moncada & Vane , 1979 ) .
20 In addition to the findings that vascular prostacyclin production may be decreased in diabetes , it has been shown that platelets obtained from diabetic subjects show diminished sensitivity to the antiaggregatory effects of prostacyclin in vitro .
21 However , if the nurse takes the time to give information to the patient , it has been shown in various studies to be beneficial ( Hayward , 1975 ; Wilson-Barnett , 1978 ; Boore , 1979 ; Bond , 1982 ) .
22 Managing is unusual in the extent in which it has been shown to rely on informal information .
23 It has been shown that one of the basic criticisms of ‘ boy labour ’ was the ‘ decay ’ or ‘ decline ’ of ‘ old-style ’ apprenticeship under the impact of excessive specialization of process which resulted in a ‘ dilution ’ of apprenticeship proper .
24 Newspaper reports , where a reporter was present at the scene , might be thought to be valuable , but unfortunately it has been shown only too often how little reliance can be placed on them .
25 It has been shown that decomposition of small mammal carcases proceeds rapidly , and the bones are then subject to environmental stresses ( Dodson , 1973 ; Korth , 1979 ) .
26 The bone evidently continued to be washed down by the stream , and it has been shown ( Dodson , 1973 ) that small animal bone is dispersed readily by flowing water .
27 In tundra habitats , it has been shown that lemmings can eat up to 50 per cent of available vegetation and destroy a lot more during peak years , and as a result of lack of food the rate of decline of lemming populations can be as rapid as the rate of increase ( Batzli , 1975 ) .
28 It has been shown that different habitats have highly characteristic patterns of species diversity ( Fleming , 1973 ; Krebs , 1978 ; Andrews , Lord & Evans , 1979 ; Avery , 1982 ) .
29 It has been shown earlier ( p. 31 ) that up to half the bones of their prey are destroyed by even the least destructive owl species , as the MNI is reduced by up to one third .
30 In fact , it has been shown by Nutku ( 1981 ) that the discontinuities in the derivatives of f and g on the boundaries of region IV indicate the presence of an infinite discontinuity in the Ricci tensor on these hypersurfaces .
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