Примери за alkane

• In this derivation the parameters were adjusted to produce accurate room-temperature enthalpies of vaporization and vapor pressures or densities of a set of solvated alkanes.

• Utilizing methanol and ethanol as the primary organic precursors, catalytic reaction products observed include alkanes, branched-phenyl compounds, carboxylic acids, and methyl-esters.

• The effects of species and sampling time on alkane concentrations were significant, accounting for 0.912 and 0.067 of the total variance, respectively.

• Two methods were developed to dose the even chain alkanes that were used as external markers.

• However, there is little published information on the effects of herbage species and animal live weight on faecal alkane recovery rates.

• The effect of live weight on alkane recovery should be evaluated before further evaluation of other factors.

• Typically, the site variance for odd-chain alkanes was smaller than for even-chain alkanes.

• In the present experiment, the effect of sampling site on the alkane patterns was significant while the site variance varied depending on individual alkanes.

• Using a least-squares optimization procedure to estimate botanical composition based on the alkanes of plant cuticular wax.

• However, few reports were found to evaluate the effects of herbage species and live weight of sheep on faecal alkane recoveries.

• Faecal recoveries of alkanes in equids do not appear to show the same influence of carbon chain length that has been observed in ruminant studies.

• For odd-chain alkanes, the site variance declined as the carbon-chain length increased.

• Faecal recoveries of the alkanes of plant cuticular waxes in penned and in grazing sheep.

• As would be expected, the alkane concentrations in faeces were about twice those in the herbage species offered to the wethers.

• The response factors for each alkane were calculated from peak areas and the known concentrations with linear calibration curve method.