Exempel på methane

• If methane is a causal mechanism, the repetition of the negative carbon excursions could be accounted for by multiple releases of methane.

• If the biosphere emits less methane when cooler, the feedback would be stabilizing.

• The same can also be said of near-stoichiometric fuel-air mixtures with very insensitive fuels such as methane.

• The methane content in the mixtures varied from 2 to 10 % according to the latest estimations for this molecule in the satellite's atmosphere.

• The release of methane from gas hydrate sources is also an unsatisfactory explanation.

• This alternative process does not restrict the methane's age to 430 years, because clathrate hydrates can preserve methane of ancient origin for long time periods.

• A comparison of systems for measuring methane emissions from sheep.

• This includes, in particular, polar solvents like ammonia, hydrocyanic acid, and methanol, and possibly non-polar compounds such as methane and ethane.

• Even from the surface, the analysis would be difficult because of the low methane concentrations.

• Most of them utilize hydrogen and carbon dioxide to produce methane and water.

• However, if the irradiation process could be responsible for prebiotic chemistry, the likely starting material would be methane.

• Samples were cultured under aerobic, anaerobic, methane aerobic and methane anaerobic conditions.

• One species did demonstrate greater methane production following anaerobic washing after two days of incubation.

• They transform simple substances such as acetate and methanol into methane.

• In the present study, landfill is treated as a reactor for enhanced generation of methane gas.