| Late eluting aromatic fractions composed predominantly of bicyclic and polycyclic aromatic compounds, namely alkyl-napthalenes and alkylindenes. |
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| Where structural features permit, bicyclic and polycyclic compounds may be formed. |
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| Hypericin, a polycyclic quinone obtained from plants of the genus Hypericum, has been shown to be a promising photosensitizer. |
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| Chemical mutagens are classified as alkylating agents, cross-linking agents, and polycyclic aromatic hydrocarbons. |
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| The Cornell team worked with sand contaminated with phenanthrene, a polycyclic aromatic hydrocarbon typically found in coal tar. |
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| Church air was found to be considerably higher in carcinogenic polycyclic hydrocarbons than air beside roads travelled by 45,000 vehicles daily. |
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| Chert fragments are likely to be polycyclic but originally derived from obducted deep-sea strata. |
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| The new targets relate to a number of chemicals including benzene, carbon monoxide and polycyclic aromatic hydrocarbons. |
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| Chronic exposure to polycyclic aromatic compounds in dusts produced at the plant was suggested as a possible factor in the disease excesses. |
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| Burning buildings can produce carbon monoxide, nitrous oxides, polycyclic aromatic hydrocarbons and volatile organic and sulphurated compounds. |
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| Biodiesel reduces emissions of unburned hydrocarbons, carbon monoxide, sulfates, polycyclic aromatic hydrocarbons, nitrated polycyclic aromatic hydrocarbons and particulates. |
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| Some structural, petrological and isotopic evidence suggests multi-stage and possibly polycyclic metamorphic evolution of the granulites of the Eastern Ghats belt. |
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| The pervasively and multiply deformed polycyclic high-grade metamorphic rocks make it difficult to reconstruct the original evolutionary history of the Mozambique belt. |
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| The molecules, called polycyclic aromatic hydrocarbons, are common in interstellar space, and many believe they were among the raw materials for life. |
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| She said other researchers had shown that these ultrafine particles can carry toxic chemicals such as quinones and polycyclic aromatic hydrocarbons. |
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| Degradation of the polycyclic aromatic hydrocarbon fluorene is retarded in a Scots pine ectomycorrhizosphere. |
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| Benzo Pyrene and polycyclic aromatic hydrocarbons were found in Dwr Cymru water at a property near Merthyr Tydfil. |
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| The bioflavonoid galangin blocks aryl hydrocarbon receptor activation and polycyclic aromatic hydrocarbon-induced pre-B cell apoptosis. |
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| Synthetic fragrances known as polycyclic musks are added to soap, shampoo, deodorant, cleaning agents, cosmetics, and other consumer products. |
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| It contains phenolic, aromatic, heterocyclic, and polycyclic organics, and inorganics including cyanides, sulfides, ammonium and ammonia. |
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| The most toxic parts are the small aromatic solvents and the complex sheets of cyclic structures called polycyclic aromatic hydrocarbons. |
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| Unidentified infrared emissions in interstellar space are not caused by polycyclic aromatic hydrocarbons, new research indicates. |
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| However this polycyclic pattern was in contrast with the normal pattern observed for the northern population, in which spawning is complete and nonrepetitive. |
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| Contaminants that are found in the tissues of marine mammals include heavy metals, such as mercury and lead, but also organochlorides and polycyclic aromatic hydrocarbons. |
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| Organisms capable of utilizing benzene, toluene, ethylbenzene, xylenes, alkanes, and polycyclic aromatic hydrocarbons have been isolated and described. |
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| The 2000 worldwide use of polycyclic musks is approximately 4,000 tons. |
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| The professor is engaged in the production of high molecular weight, planar, partially poorly soluble and sublimable and ionic polycyclic hydrocarbons. |
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| Each diastereomer was independently reacted with a second alkenyl anion which lead to the isolation of the same polycyclic compound after the cascade reaction took place. |
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| The new laboratories, at Geel, in Belgium, will test for heavy metals, mycotoxins and polycyclic aromatic hydrocarbons, all key food health concerns. |
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| Polycyclic aromatic hydrocarbons are known carcinogens and have been linked to developmental problems. |
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| Polycyclic aromatic hydrocarbons have already been linked to lower IQs, anxiety, depression and attention deficit disorder. |
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| Polycyclic aromatic hydrocarbons are a class of organic compounds having two or more fused aromatic ring structures each based on the structure of benzene. |
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| Polycyclic aromatic hydrocarbons are a class of multiphasic organic compounds composed of two or more fused aromatic rings. |
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