| 单词 | pyridine |
| 例句 | However, a panel of 12 experts said in January no definitive cause had been found, but they ruled out pyridine and concluded it was possible a disease or parasite new to UK waters was responsible. North Yorkshire Council backs calls for shellfish die-off public inquiry 2023-05-19T04:00:00Z Previous research, supported by the fishing industry, had suggested the deaths could have been due to the chemical pyridine, possibly from dredging in the mouth of the River Tees. Whitby fishermen call for answers over shellfish deaths 2023-02-24T05:00:00Z Measures should include "thorough sampling and testing for chemical pollutants such as pyridine," it said. Shellfish deaths: Environment, Food and Rural Affairs Committee calls for investigation 2023-02-01T05:00:00Z Research last year by academics, backed by the fishing industry, suggested the industrial pollutant pyridine, possibly from dredging at the mouth of the River Tees, as a potential cause. Scientists say pollution not cause of UK mass crab deaths 2023-01-20T05:00:00Z A report suggested algae was to blame - but the fishermen fear the deaths were linked to the release of the chemical pyridine as a result of dredging in the River Tees in October. Fishermen begin legal campaign over dead shellfish 2022-08-31T04:00:00Z What are the hybridizations, electron domain geometries, and molecular geometries about the nitrogen atoms in pyridine and in the pyridinium ion? Chemistry 2019-02-14T00:00:00Z However, the panel of 12 experts said in January no definitive cause had been found, but they ruled out pyridine and concluded it was possible a disease or parasite new to UK waters was responsible. Whitby fishermen call for answers over shellfish deaths 2023-02-24T05:00:00Z "We know from the stats that the level of pyridine found in crustaceans off the North East coast is 70 times higher than that found in Cornwall," he said. Redcar councillors call for reinvestigation into shellfish deaths 2022-07-18T04:00:00Z “We just could not find evidence for high levels of pyridine in the coastal sea water,” said Lancaster University environmental chemist Crispin Halsall, who worked on the report. Scientists say pollution not cause of UK mass crab deaths 2023-01-20T05:00:00Z As well as considering a judicial review, the fishermen want the mayoral authority to test extensively for pyridine before new dredging work, for an offshore wind development, begins in September. Fishermen begin legal campaign over dead shellfish 2022-08-31T04:00:00Z But Tim Deere-Jones found Environment Agency data which showed quantities of the chemical pyridine were more than 70 times higher in some crab samples. Expert disputes North East coast shellfish deaths findings 2022-02-05T05:00:00Z Snyder’s exposome, for instance, showed relatively low exposure to pyridine, apparently because the paint in his house lacks this common antifungal additive. Take a Deep Breath and Say Hi to Your Exposome 2018-09-28T04:00:00Z Tim Deere-Jones, a marine pollution researcher was commissioned to investigate by Whitby Fishermen's Association, and found quantities of the chemical pyridine were more than 70 times higher in some crab samples. Redcar councillors call for reinvestigation into shellfish deaths 2022-07-18T04:00:00Z The gas is believed to be chloromethyl pyridine, a chemical used to manufacture pesticides and insecticides. Delhi gas leak: 200 schoolgirls in hospital - BBC News 2017-05-06T04:00:00Z "Government scientists carried out extensive testing for chemicals and other pollutants, including pyridine, but concluded a naturally occurring algal bloom was the most likely cause," an official said. Fishermen begin legal campaign over dead shellfish 2022-08-31T04:00:00Z The BBC asked Defra why pyridine levels were more than 70 times higher in one North East sample, how Defra ruled that out as a cause and why dogs had been getting sick on beaches. Expert disputes North East coast shellfish deaths findings 2022-02-05T05:00:00Z These fire-produced substances are called, from their origin, the 'pyridine series.' Health, Happiness, and Longevity Health without medicine: happiness without money: the result, longevity 2012-03-22T02:00:38.537Z Reference will be made later on to the effects of nicotine and pyridine on the human system. Tobacco Leaves Being a Book of Facts for Smokers 2011-09-12T02:00:31.107Z The crystallized anthracene is then removed by a centrifugal separator and the process of solution in the pyridine bases is repeated. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" Another coal-tar product, viz. the pyridine base referred to in the last chapter, has been recently employed for washing anthracene with great success. Coal and What We Get from It A. Werner determined the molecular weights of mercurous, cuprous and silver bromides, iodides and chlorides in pyridine solution, and obtained results pointing to the formula HgCl, etc. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 1 "Calhoun" to "Camoens" Most of these are of a basic character, and belong to the pyridine and the quinoline series. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" Bush concluded, therefore, that pyridine and not nicotine is the toxic factor in tobacco smoke. Tobacco Leaves Being a Book of Facts for Smokers 2011-09-12T02:00:31.107Z The crude anthracene cake is purified by treatment with the higher pyridine bases, the operation being carried out in large steam-jacketed boilers. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" In 1881 there was introduced into medicine the first of a group of antipyretics derived from coal-tar bases of the pyridine series. Coal and What We Get from It Several of these, notably pyridine, phenol and nitrobenzene, cause considerable swelling and gelatinisation of the fibres, but without solution. Researches on Cellulose 1895-1900 The crude anthracene is brought up to 50 or 60, sometimes to 80%, by washing with solvent naphtha, or more efficiently with the higher boiling portion of the pyridine bases. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" Both nicotine and its derivative pyridine as well as the tarry oils resulting from tobacco distillation are strong and effective disinfectants; and formaldehyde, one of the most powerful germicides known, is so formed. Tobacco Leaves Being a Book of Facts for Smokers 2011-09-12T02:00:31.107Z The substances ordinarily used to denature alcohol are wood alcohol and pyridine, the latter compound having a very offensive odor. An Elementary Study of Chemistry The salts of pyridine were shown by McKendrick and Dewar to act as febrifuges in 1881, but they have not hitherto found their way into pharmacy. Coal and What We Get from It As stated it is soluble in certain of the ordinary solvents of the cellulose esters, e.g. chloroform, acetic acid, nitrobenzene, pyridine, and phenol. Researches on Cellulose 1895-1900 This reagent is added until the acid reaction has just disappeared and a faint smell of pyridine is perceived. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" This is not exactly the case with the higher groups of alkaloids—the derivatives of pyridine and quinoline. Scientific American Supplement, No. 623, December 10, 1887 Indeed, Ladenberg has recently succeeded in obtaining benzol as an alteration product from pyridine, in certain reactions. Scientific American Supplement, No. 415, December 15, 1883 The three hydrocarbons are comparable with the three bases, which may be regarded as derived from them in the same manner that pyridine is derived from benzene— Benzene ... Coal and What We Get from It The ``general'' mixture consists of 100 litres of spirit, and 5 litres of wood spirit or 1/2 litre of pyridine. The Project Gutenberg Encyclopedia Volume 1 of 28 In smoking, some of the nicotine is decomposed, forming pyridine, picoline, and other poisonous alkaloids. Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics On the other hand, a cigar produces but little pyridine, but more of the less active collidine. The Art of Living in Australia ; together with three hundred Australian cookery recipes and accessory kitchen information by Mrs. H. Wicken Conine, on oxidation, yields chiefly butyric acid, but among the products of oxidation has been found the pyridine carboxylic acid before referred to. Scientific American Supplement, No. 415, December 15, 1883 The nitrobenzene acts only as an oxidizing agent; the amido-group of the aniline is converted into a group containing carbon, hydrogen, and nitrogen, i.e. the pyridine group. Coal and What We Get from It By acting upon meconic acid with ammonia, comenamic acid is formed, and this latter, when heated with zinc dust, yields pyridine. Scientific American Supplement, No. 415, December 15, 1883 This latter base has been shown to be a hydrogen addition product of pyridine, C5H5N. Scientific American Supplement, No. 415, December 15, 1883 This pyridine to which reference has just been made has lately been brought forward as a remedy for asthma. The Art of Living in Australia ; together with three hundred Australian cookery recipes and accessory kitchen information by Mrs. H. Wicken Heated with bromine water to 120°C. it decomposes into bromoform, carbon dioxide, nitrogen, and pyridine. Scientific American Supplement, No. 415, December 15, 1883 When heated with concentrated sulphuric acid, it is oxidized to pyridine. Scientific American Supplement, No. 415, December 15, 1883 The study of the decomposition products of the cinchona alkaloids especially points quite distinctly to the probable existence in quinine of a hydrogen addition product of pyridine, in combination with a methyl-quinoline group. Scientific American Supplement, No. 415, December 15, 1883 In a pipe, according to Vold and Eulenburg, the tobacco yields a very much larger proportion of volatile bases, especially of the very volatile and stupefying pyridine. The Art of Living in Australia ; together with three hundred Australian cookery recipes and accessory kitchen information by Mrs. H. Wicken And Professor See, the eminent French physician, believes that the pyridine is the relieving agent. The Art of Living in Australia ; together with three hundred Australian cookery recipes and accessory kitchen information by Mrs. H. Wicken |
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