Sentence examples for ratios of methane from inspiring English sources

Carbon isotope ratios of methane, ethane, and propane can also be used to identify the genesis of natural gases (Lin et al. 2011).

Methane partial pressure, methane total flow rate, as well as the flow ratios of methane to argon and methane to hydrogen (reducing gas) were the parameters systematically varied.

The original plan of the researchers was to analyze the carbon isotope ratios of methane on Mars to get insight on whether that gas could be biologically produced.

Exactly 217 of these samples contained detected methane and ethane, and of those samples, approximately 72% (156 samples) displayed ratios of methane to ethane greater than 1000.

As described previously, ratios of methane to ethane can be used as an initial tool to evaluate possible differences between hydrocarbon gas sources (Bernard et al. 1976; Schoell 1980).

An oxygen uptake of 21 mmol m−2 day−1 would correspond to a methane consumption rate of 10.5 mmol m−2 day−1 based on the stoichiometric ratios of methane to sulfide (1 1) and of sulfide to oxygen (1 2).

Based on the statistical data from Dai (1992), the carbon isotope ratio of methane should be −32 to −36 ‰.

If this is true, the hydrogen isotope ratio of methane in geological samples would be useless as a tracer to deduce the origin of methane.

The lower carbon isotope ratio of methane and the lower C1/(coefficientficonstitutetitute a contradiction with the higher maturity of source rocks.

The simulation results revealed that increasing the ratio of methane to oxygen in the feed leads to lower methane conversion but higher C2 selectivity.

The average worldwide tropospheric mixing ratio of methane has increased by 11% from 1.52 parts per million by volume (ppmv) in January 1978 to 1.684 ppmv in September 1987, for an increment of 0.016 ± 0.001 ppmv per year.