Example sentences of "these are [vb pp] by [adj] [noun] " in BNC.

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1 These are characterised by internal company training and promotion systems , complex wage hierarchies , as well as greater job security , since most jobs are insulated from the direct effects of competitive forces in the external labour market .
2 If a sizeable proportion of these are characterised by extreme ambivalence , even hostility , it throws into question many assumptions about this form of community care as preferable to ( say ) residential care .
3 These are listed by mathematical topic , and grouped together into levels according to their difficulty .
4 A variety of white leaf marks is found in natural populations and these are represented by multiple alleles at a single locus .
5 El Salvador has a school population aged four to twelve of two million , but only 600,000 of these are served by public sector schools .
6 Being aware of the ( external ) divergence between these cultures and ‘ mainstream ’ culture , they are anxious to avoid imposing what they call ‘ crude mainstream stereotypes ’ on to the interpretation of these internal systems : they want to get access to what the patterns of behaviour mean internally and how these are perceived by in-group members .
7 Normally courses in three subjects are taken in the first year and , commonly , these are followed by second courses in at least two of the subjects in the second year .
8 These are followed by floating leaves borne on long stalks ; these leaves being slightly darker than the juvenile ones , sometimes undulated and with a prominent midrib bearing four to five parallel veins .
9 The distribution of the hoards does not correspond with either population or wealth , in as much as these are revealed by documented figures such as the Ship Money Assessment of 1636 .
10 Many factors may be responsible , but 99% of these are caused by poor pond husbandry .
11 T n tracts of T 9 GCA 9 persist for a relatively long time adds further weight to the suggestion that these are caused by ligand-induced alterations in local DNA structure , rendering it more susceptible to attack by this nuclease .
12 These are treated by ultraviolet light after the reaction .
13 These are marked by lusty singing and strong rhythms and reflect very much the extrovert nature of the worshippers .
14 The strong nonthermal radio continuum emission from the centre shows that there is a large flux of synchrotron electrons at the centre , and if these are accompanied by relativistic protons , the inner 300pc of the Galaxy should be a powerful γ -ray source on account of the large column density of molecular gas there .
15 These are accompanied by handsome systems of mouldings and mosaics spelling out the station names .
16 These are manifested by hot-spring sinters , silica veins and associated hydrothermal alteration .
17 Then we drove to the Bayeux Military Cemetery which is divided into plots , these are identified by Roman numerals , each plot divided into rows with alphabetical letters , and the graves by numbers in each row .
18 When many of these are taken by one person it is still useful for him or her to ensure that the separate responsibilities are kept in balance — and essential if the work is to be of use to other teachers .
19 Unusually there are two modern shopping complexes , the VICTORIA AND BROADMARSH CENTRES and these are linked by pedestrianised streets to traditional shops and fine arcades .
20 These are complemented by numerous diagrams of great clarity and relevance to the accompanying text .
21 These are surrounded by hostile forces , vulnerable to shelling and dependent for most necessities on UN aid .
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