Release of volatiles in oil emulsion systems containing various fat contents was determined using purge-and-trap dynamic headspace/gas chromatography. Oil emulsions were prepared using 0, 0.5, 1, 2, 4, or 8% oil, and a standard mixture was prepared using hydrocarbons, aldehydes, ketones, and alcohols. Fat content in oil emulsions reduced the volatility of added volatile standards, and the amoun...

During tertiary miscible gas injection direct contact between gas and oil can be prevented by water surrounding residual oil. The principal aim of our study is to assess the importance of this waterblocking phenomenon in multicomponent gas injection. We study this process using a multicomponent porescale model. Light components in the gas dissolve in the water and diffuse through the water to r...

The process of hydraulic fracturing for recovery of oil and natural gas uses large amounts of fresh water and produces a comparable amount of wastewater, much of which is typically transported by truck. Truck transport of water is an expensive and energy-intensive process with significant external costs including roads damages, and pollution. The integrated development plan (IDP) is the industr...

The chemical composition of the essential oil of Etlingera yunnanensis rhizomes and its contact and repellent activities against Tribolium castaneum (Herbst) and Liposcelis bostrychophila (Badonnel) were investigated. The essential oil obtained from E. yunnanensis rhizomes with hydrodistillation was performed by gas chromatography-flame ionization detection and gas chromatography-mass spectrome...

A comparative study was done on the dry oils isolated from the leaves and stem portions of Corchrus olitorius (Linn.) growing in Saudi Arabia. Oils were obtained by column chromatography and analysed by Gas Chromatography (GC), Gas Chromatography/Mass Spectrometry (GC/MS) and 13C NMR spectroscopy. The investigation led to the identification of 22 components in leaves oil while as 23 components ...

the fruit essential oil of ferula gummosa boiss., umbelliferae, which has been used as an antiepileptic remedy in iranian traditional medicine, was evaluated for anticonvulsant activity against experimental seizures. the essential oil had no effect against seizures induced by maximal electroshock. however, it protected mice against pentylenetetrazole-induced tonic seizures. the protective dose ...

Approximately 1.5 billion tyres are produced each year which will eventually enter the waste stream representing a major potential waste and environmental problem. However, there is growing interest in pyrolysis as a technology to treat tyres to produce valuable oil, char and gas products. The most common reactors used are fixed-bed (batch), screw kiln, rotary kiln, vacuum and fluidised-bed. Th...

In the fall of 2016, a field study was conducted in the Uinta Basin Utah to improve information on oil and natural gas well pad pneumatic controllers (PCs) and emission measurement methods. A total of 80 PC systems at five oil sites (supporting six wells) and three gas sites (supporting 12 wells) were surveyed, and emissions data were produced using a combination of measurements and engineering...

This study proposed a novel way for global greenhouse gas reduction through reusing China's waste oil to produce biofuels. Life cycle greenhouse gas mitigation potential of aviation bio-kerosene and biodiesel derived from China's waste oil in 2010 was equivalent to approximately 28.8% and 14.7% of mitigation achievements on fossil-based CO2 emissions by Annex B countries of the Kyoto Protocol i...

In this study, we evaluated on a comparative basis the dietary effect between eicosapentaenoic acid (C20:5, EPA)- containing soyphospholipid and soyphospholipid without EPA when added at 5% or 10% level by weight in soybean oil as the dietary oil on the proportions of lipid components in serum of rats. Rats were taken in five groups. One group was fed 20% soybean oil. Two groups received soybea...