| Limits for combustion in low O2 redefine paleoatmospheric predictions for the Mesozoic. | |
| | |
MedLine Citation:
|
PMID: 18755974 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Several studies have attempted to determine the lower limit of atmospheric oxygen under which combustion can occur; however, none have been conducted within a fully controlled and realistic atmospheric environment. We performed experimental burns (using pine wood, moss, matches, paper, and a candle) at 20 degrees C in O2 concentrations ranging from 9 to 21% and at ambient and high CO2 (2000 parts per million) in a controlled environment room, which was equipped with a thermal imaging system and full atmospheric, temperature, and humidity control. Our data reveal that the lower O2 limit for combustion should be increased from 12 to 15%. These results, coupled with a record of Mesozoic paleowildfires, are incompatible with the prediction of prolonged intervals of low atmospheric O2 levels (10 to 12%) in the Mesozoic. |
| | |
Authors:
|
C M Belcher; J C McElwain |
Related Documents
:
|
14756934 - The role of flow experience in cyber-game addiction. 20035064 - Contraction-by-contraction vo2 and computer-controlled pump perfusion as novel techniqu... 6198984 - Microregional blood flow and high energy phosphates under conditions of high o2 supply ... 813584 - Oxygen consumption changes with stored blood infusions. 21346114 - Effects of body mass on physiological and anatomical parameters of mature salmon: evide... 11108164 - Evaluation of coronary blood flow reserve by 13n-nh3 positron emission computed tomogra... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Science (New York, N.Y.) Volume: 321 ISSN: 1095-9203 ISO Abbreviation: Science Publication Date: 2008 Aug |
Date Detail:
|
Created Date: 2008-08-29 Completed Date: 2008-09-12 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0404511 Medline TA: Science Country: United States |
Other Details:
|
Languages: eng Pagination: 1197-200 Citation Subset: IM |
Affiliation:
|
School of Biology and Environmental Science, University College Dublin (UCD), Belfield, Dublin 4, Ireland. claire.belcher@ucd.ie |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Atmosphere* Bryophyta Extinction, Biological Fires* Oxygen* Paper Temperature Time Wood |
| Chemical | |
Reg. No./Substance:
|
7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Weak interplate coupling by seamounts and repeating M approximately 7 earthquakes.
Next Document: Field experiments with transformed plants reveal the sense of floral scents.