Example sentences of "have be shown to be " in BNC.

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1 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 .
2 Often , both in America and in Britain , hostile takeovers have been shown to be reckless , mistaken and damaging .
3 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 .
4 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 .
5 β-Thromboglobulin levels have been shown to be elevated in various types of vascular disease .
6 The festivals have been shown to be relatively successful by some indicators .
7 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 .
8 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 .
9 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 .
10 Generally it is helpful to carry out these discussions with managers from sites who have been shown to be performing well ( at least above average ) in the relevant activity .
11 the recommendations have been shown to be readily accepted both by line and functional management ;
12 Hotel leisure facilities have been shown to be a worthwhile investment in that they can :
13 But to the anorexic , that last phrase is a contradiction in terms : autonomy and femininity have been shown to be irreconcilable .
14 He said he was not satisfied that the fire had been started deliberately , let alone who might have started it and that the scientific evidence was ‘ underlined by a number of assumptions which have been shown to be totally false ’ .
15 Certainly almost all of the characters that Burdon lists have been shown to be of selective importance either in clover or in some related species , though sometimes under very specialized circumstances .
16 Now , it turns out , they could n't be : in both Italy and Japan , the guardians of democracy have been shown to be enmeshed in corruption .
17 Liposomes , which in clinical trials have been shown to be non-toxic and non-immunogenic , may be safer than viral vectors which have the inherent risks of immunogenicity , replication and transmission .
18 However , head size , birth weight , and intelligence have been shown to be inversely and linearly associated with maternal phenylalanine concentrations , again without any obvious threshold in effect .
19 Five of the nine infants have been shown to be deleted from part of the Duchenne muscular dystrophy gene ( table II ) .
20 Pairs of sentences that have a coherent semantic relation have been shown to be more rapidly processed than pairs in which the relation is less distinct [ Just & carpenter , 1978 ] .
21 However , n-gram techniques have been shown to be less effective for the present project than word-lookup methods , as they fail to exploit letter-level constraints to the same extent [ Wells , 1989 ] .
22 Psychological theories of semantics have been shown to be important , since the human information processing system is the best example of a language processing system , and that such theories attempt to produce cognitive models that should be computationally implementable .
23 And since this means that at least 20 per cent of the captive-bred animals ( with no experience of the wild ) have been shown to be able to hunt for themselves , find shelter from the freezing conditions and evade predators for more than a month , Bob Oakleaf of the Wyoming Game and Fish Department considers the release a success .
24 In this instance health reports specify the pathogens which have been shown to be absent from the animals .
25 After about seventy-two hours of sleep loss , " it is impossible to prevent subjects from obtaining brief " microsleeps " " which ( when EEG measures are made ) have been shown to be indistinguishable from brief periods of natural sleep .
26 On the one hand , in genetic terms , the physical or biological differences between groups defined as ‘ races ’ have been shown to be trivial .
27 In the spirit of this observation , however , it is not enough to argue that Marx 's views have been shown to be false by the continuing development of capitalist socialisation .
28 Furthermore , disadvantaged groups , both within our society and in developing countries , have been shown to be at high risk from gestational diabetes .
29 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 .
30 In humans , gangliosides have been shown to be potentially effective in various central and peripheral nervous system disorders .
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