Example sentences of "have been known [prep] [adj] [noun] " in BNC.
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| 1 | It has been known for many years that damage to the left hemisphere is more likely to affect language ability than damage to the right , suggesting that the left hemisphere is very important for language . |
| 2 | For example , it is still commonplace in cartoons to show cavemen and dinosaurs together , despite the fact that it has been known for many years that dinosaurs were extinct long before the evolution of ‘ cavemen ’ . |
| 3 | It has been known for many years that rich clusters contain a lot of gas and dark matter , but Ponman and Bertram 's result shows that these features apply more generally . |
| 4 | It has been known for many years that neurons , like other cells , can be maintained alive and well under such conditions for periods of many days or even weeks , provided they are kept warm , aerated and well fed with glucose and other essential molecules . |
| 5 | It has been known for many years that recycling used materials helps make great savings , but it was not until recently that it was realised how much good that it could do for the environment . |
| 6 | The latter phenomenon has been known for some time , Zwaardemaker recording several ‘ cancelling pairs ’ as far back as 1875 , which included : |
| 7 | The powerful hydrogen bonding capacity of fluoride , discussed by John Emsley , has been known for some time , but its potential for interfering with the vitally important hydrogen bonds between biomolecules has only recently begun to receive attention . |
| 8 | It has been known for some time that eyes give out bioelectric signals — the retina has a positive charge , the cornea is negative . |
| 9 | Segmentation is not an innovation in woodturning , and has been known for some time . |
| 10 | It has been known for some time that the majority of fibres from the left and right eyes converge upon single cells in the visual cortex of the cat and monkey ( Hubel and Wiesel , 1967 ) . |
| 11 | Although the link between social deprivation and road accident casualty rates has been known for some time , the scale of the problem has not been assessed either nationally or locally . |
| 12 | Is not the Minister aware that it has been known for some time that four times as many women as men suffer the chronic pain that comes from the loss of movement in and the fracture of hip joints ? |
| 13 | It has been known for some time that the inactive form of ALDH2 is present in about 50% of Japanese and Chinese and is associated with high acetaldehyde concentrations , an exaggerated flush response to alcohol , and seems to protect against alcoholism . |
| 14 | It has been known for some time that versatile plastics could be made from vegetable matter but production costs have been prohibitive . |
| 15 | It has been known for some time that the Inland Revenue has been taking a close interest in the marketing practices of livestock farmers in parts of Wales and the West Country . |
| 16 | It has been known for some years now that records of the electricity activity of the brain during sleep — by electrodes attached to the scalp , face and neck — confirm that different types of sleep exist . |
| 17 | The site has been known to many antiquaries from the eighteenth century onwards ; Gordon recorded that the circuit of the walls was still conspicuous , a description which conflicts with the almost contemporary report of that other noted antiquarian of Hadrian 's Wall , John Horsley , who wrote that the Roman site was almost entirely levelled and under the plough . |
| 18 | Formerly known as managing clerks , this body of employees has been known as legal executives since 1963 when the Institute of Legal Executives was established . |
| 19 | Sir , as has been known in other cases before you , there have been many |
| 20 | Luminescence has been known in geological materials since 1604 , when the alchemist Cascierolo described light emission from barite . |
| 21 | The result of the application to the Court of Appeal on 4 November 1991 might have been different if the true position had been known to that court . |
| 22 | Although the general distribution of earthquakes around the world had been known for many years , it was only with the establishment of a comprehensive network of seismographic stations to monitor underground nuclear weapons testing in the early 1960s that a detailed global picture emerged ( Fig. 2.10 ) . |
| 23 | The existence of the tape , had been known for two-and-a-half years , as copies were sent anonymously to newspapers . |
| 24 | The problems of the system under which the starter operates a lever had been known for some years , but the Jockey Club and the course executive failed to replace it , the report added . |
| 25 | It had been known for some time that relations between Stephenson and Villa were strained because of the player 's insistence on living in his home-town of Newcastle , and several clubs , keen to secure him , were watching the situation closely . |
| 26 | The squinch had been known for some time and was used in Persia , Turkestan , Armenia and Asia Minor . |
| 27 | That was after the war ; during the war itself she had been known as just M , wherever she went . |
| 28 | In that year comparisons of Eliot with Pound were stimulated , and exacerbated , by the publication of what were called the ‘ drafts and transcripts ’ of The Waste Land ; that is to say , the heterogeneous packet of typescripts and manuscripts which Eliot had dumped on Pound in Paris , out of which Pound had helped Eliot to extricate the poem that for forty years had been known under that title . |
| 29 | Projectile weapons had been known from Roman times , but much of the technology was redeveloped during the crusades . |
| 30 | Although they have been known for many years their evolutionary position is still hotly debated . |