Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Alkenone> ?p ?o. }
Showing items 1 to 32 of
32
with 100 items per page.
- Alkenone abstract "Alkenones are highly resistant organic compounds (ketones) produced by phytoplankton of the class Prymnesiophyceae. The exact function of the alkenones remains under debate.Coccolithophoroids, for instance Emiliania huxleyi, respond to changes in water temperature by altering the production of long-chain unsaturated alkenones in the structure of their cell. At higher temperatures, more of the di-unsaturated molecules are produced than tri-unsaturated [Prahl and Wakeham]. The molecules are resistant to diagenesis, and can be recovered from sediments up to 110 million years old.The ambient water temperature in which the organisms dwelt can be estimated from ratio of their unsaturated alkenones (C37-C39) that are preserved in marine sediments. The modified Unsaturation Index of “di” versus “tri” unsaturated C37 alkenone is calculated according to the following relationship from [Prahl and Wakeham], which is modified after the original Unsaturation Index from [Brassell et al.] that included the tetra-unsaturated alkenone:UK′37 = C37:2/(C37:2 + C37:3)The Unsaturation Index can then be used to estimate the water temperature according to the following experimental relationship [Prahl and Wakeham]:T [°C] = (UK′37 - 0.039)/0.034".
- Alkenone thumbnail Alkenone-37-3-2D-skeletal.png?width=300.
- Alkenone wikiPageID "4299233".
- Alkenone wikiPageRevisionID "571997720".
- Alkenone hasPhotoCollection Alkenone.
- Alkenone subject Category:Ketones.
- Alkenone subject Category:Paleoclimatology.
- Alkenone type Abstraction100002137.
- Alkenone type Chemical114806838.
- Alkenone type Compound114818238.
- Alkenone type Ketone114926294.
- Alkenone type Ketones.
- Alkenone type Material114580897.
- Alkenone type Matter100020827.
- Alkenone type OrganicCompound114727670.
- Alkenone type Part113809207.
- Alkenone type PhysicalEntity100001930.
- Alkenone type Relation100031921.
- Alkenone type Substance100019613.
- Alkenone comment "Alkenones are highly resistant organic compounds (ketones) produced by phytoplankton of the class Prymnesiophyceae. The exact function of the alkenones remains under debate.Coccolithophoroids, for instance Emiliania huxleyi, respond to changes in water temperature by altering the production of long-chain unsaturated alkenones in the structure of their cell. At higher temperatures, more of the di-unsaturated molecules are produced than tri-unsaturated [Prahl and Wakeham].".
- Alkenone label "Alcénone".
- Alkenone label "Alkenon".
- Alkenone label "Alkenone".
- Alkenone sameAs Alcénone.
- Alkenone sameAs Alkenon.
- Alkenone sameAs m.0bvvfx.
- Alkenone sameAs Q2832237.
- Alkenone sameAs Q2832237.
- Alkenone sameAs Alkenone.
- Alkenone wasDerivedFrom Alkenone?oldid=571997720.
- Alkenone depiction Alkenone-37-3-2D-skeletal.png.
- Alkenone isPrimaryTopicOf Alkenone.