Permafrost thaw can alter the soil environment through changes in soil moisture, frequently resulting in soil saturation, a shift to anaerobic decomposition, and changes in the plant community. These changes, along with thawing of previously frozen organic material, can alter the form and magnitude of greenhouse gas production from permafrost ecosystems. We synthesized existing methane (CH4 ) a...

Chlorella protothecoides, a lipid-producing microalga, was grown heterotrophically and autotrophically in separate reactors, the off-gases exiting the former being used to aerate the latter. Autotrophic biomass productivity with the two-reactor association, 0.0249gL(-1)h(-1), was 2.2-fold the value obtained in a control autotrophic culture, aerated with ambient air. Fatty acid productivity was ...

supercritical carbon dioxide (sc-co2) was used as solvent to synthesize oleyl oleate as an analog of jojoba oil from oleic acid and oleyl alcohol with high conversion (100%) of the acid into ester in a short time of 100 min. utilizing a low cost solid catalyst, p-toluenesulfonic acid monohydrate (ptsa), the esterification reaction was performed, without any prior preparation step, in a flow mod...

In this study, transportation-induced carbon footprint values before and after the consolidation projects in two areas with similar agricultural characteristics were calculated. The IPCC Tier 1 method recommended by (Intergovernmental Panel on Climate Change) was used to calculate footprint. Furthermore, effects of changes road lengths routes these Land Consolidation (LC) fuel consumption tract...

Switchgrass (Panicum virgatum L.) is being evaluated as a bioenergy crop for the northern Great Plains. Field measurements of CO2, CH4, and N2O flux are needed to estimate the net greenhouse gas (GHG) balance of this biofeedstock. The study objective was to determine effects of recommended Nitrogen (N) fertilization (67 kg ha 1 of N applied) and unfertilized switchgrass on growing season soil-a...

The effect of cultivar on sterol composition of tomato (Solanum lycopersicum L.) seed oil from three industrial cultivars (Principe Borghese, Rebelion F1 and San Marzano) grown in Calabria Region (Southern Italy) was investigated. Sterol composition is presented both as percentage on the total sterol content (%) and as an absolute value (mg/kg). Rebelion F1 produced the worst seed oil in terms ...

Segura, J.C., Ouellette C., Feddes J.J.R., Fasenko G.M. and Zuidhof M.J. 2006. Development of a metabolic calorimeter system to measure heat production of domestic avian embryos during incubation. Canadian Biosystems Engineering/Le génie des biosystèmes au Canada 48: 4.1 4.6. A metabolic calorimeter system was developed to facilitate collection of metabolic data from 24 embryos within an incuba...