单词 kerogen 释义 BETA

Examples ofkerogen

Dictionary> Examples ofkerogenkerogenisn’t in the Cambridge Dictionary yet. You can help!Add a definitionSearch in vain for explanations about the left-handed chirality of molecules inkerogen, for how oxygen came to dominate the atmosphere and a runaway greenhouse effect was avoided.From theCambridge English CorpusThe main product of this hydrolysis, acetylene, may have undergone a series of condensation reactions, which may have produced a variety of hydrocarbons, including petroleum andkerogen.From theCambridge English CorpusIn fact, its pyrolizate matches the pyrolysis products of meteoritickerogen, while subtle but important chemical differences have been found in comparison with a coal or lignin pyrolizate.From theCambridge English CorpusKerogenassemblages of ten selected organic-rich samples (including the sample representing the uppermost black shale) were isolated using non-oxidative palynological maceration with hydrochloric and hydrofluoric acids.From theCambridge English CorpusThis organic matter occurs both in solvent soluble and insoluble (kerogen) fractions.From theCambridge English CorpusThis suggests that small amounts ofkerogenmay be used as a biomarker for silicified filamentous features composed primarily of oxide minerals.From theCambridge English CorpusFor quantitative palynofacies analyses, each countablekerogencomponent was counted, up to 200 specimens.From theCambridge English CorpusFrom this specific behaviour, coal can be defined as akerogen.From theCambridge English CorpusIn pristine chondrites, we demonstrate that the kerogen's maturity is related to the temperature of the metamorphism peak2,3.From theCambridge English CorpusThe hydrocarbons may have undergone radiation processing, which may have transformed them into a mixture of aromatic hydrocarbons and evenkerogen.From theCambridge English CorpusAll of these results suggest that meteoritickerogenshould have a chemical structure recalling that of coal and certain terrestrial types of kerogen.From theCambridge English CorpusWe interpret these black dots as being the degradation products of algal cells composed of organic matter, probably of akerogennature.From theCambridge English CorpusIn this sample, otherkerogencomponents are very rare relative to the amount of black organic particles.From theCambridge English CorpusOrganic carbon isotopic compositions were measured for thekerogenfraction.From theCambridge English CorpusMeteoritickerogenrepresents about 80 % of the organic matter present in a carbonaceous chondrite and is characterized by the fact that it is completely insoluble in any solvent.From theCambridge English CorpusKerogenis insoluble macromolecular organic matter, operationally defined as the organic residue left after acid demineralization of a rock.From theCambridge English CorpusPreserved biogenic carbon, orkerogen, can no longer be identified with optical microscopy.From theCambridge English Corpus

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