نتایج جستجو برای: petroleum oil
تعداد نتایج: 149714 فیلتر نتایج به سال:
Parts of oil spills reach Iranian coastline along the Persian Gulf in the form of tar balls and scattered oilpatches. There are many published reports regarding oil spills reaching northern coasts of the Persian Gulf,but none report on the content of heavy metals associated with petroleum in sediments and plants ofcontaminated areas. This research was conducted to determine and map petroleum- r...
BACKGROUND Many patients depend on moisturisers issued by public health services in the management of atopic dermatitis (AD). METHODS In a randomised controlled trial of patients with mild to moderate AD, aged 1-12 years, study 1 compared aqueous cream v. liquid paraffin (fragrance-free baby oil) as a soap substitute, all patients using emulsifying ointment as moisturiser, and study 2 compare...
The rapid depletion in world petroleum reserves and uncertainty in petroleum supply due to political and economical reasons, as well as, the sharp escalations in the petroleum prices have stimulated the search for alternatives to petroleum fuels. The situation is very grave in developing countries like India which imports 70% of the required fuel, spending 30% of her total foreign exchange earn...
Emissions from two biofuels, a soy-based biodiesel and an animal-based biodiesel, were measured and compared to emissions from a distillate petroleum fuel oil. The three fuels were burned in a small (3.5x10 Btu/hr) firetube boiler designed for use in institutional, commercial, and light industrial applications. Emissions were measured for carbon monoxide (CO), carbon dioxide (CO2), oxides of ni...
ports’ activities could result in oil spills occurrences and oil pollution in different ways including the discharges of ships’ oily wastes, discharges of oily ballast water and leaks at oil terminals. in this paper, using the results of the analyses of the hydrocarbon compounds in the samples collected from the sediments in the anzali port in the caspian sea in iran, the levels of oil pollutio...
The use of petroleum based products is very widespread in our modern society. Automobiles are powered by gasoline, homes are heated with oil and industrial and manufacturing activities derive energy from various hydrocarbon fuels. The transport of petroleum products by sea, rail, tanker trucks and pipelines is common and unavoidable. Releases of petroleum hydrocarbons to the environment occur d...
Buried hydrocarbon deposits, such as liquid petroleum, represent an abundant source of reduced carbon for microbes. It is not surprising therefore that many organisms have adapted to an oily, anaerobic life deep underground, often at high temperatures and pressures, and that those organisms have had, and in some cases continue to have, an effect on the quality and recovery of the earth’s dimini...
Liquid ultrasonic flow meters (LUFMs) continue to gain popularity in petroleum measurement with the promise of high accuracy and low maintenance. These are favorable features, but because of the high volume and value of petroleum products, buyers and sellers must have a high level of confidence in the accuracy of measurement. This assurance in custody transfer measurement is gained by adherence...
Rockets and Feathers? Petroleum Product Price Movements “Shooting up like a rocket, drifting downward like a feather in the wind,” or so goes the perception of petroleum product prices. This became the focus of public attention world over in 2008, when the international price of oil surged in the first six months, only to fall dramatically to a third of its peak value in the following five mont...
Microbial bioremediation of petroleum wastewater by phenol-degrading-bacteria holds promise in circumventing the issue of petroleum-spill related pollution. Herein, biodegradation of petroleum wastewater samples collected from oil refinery site was carried out in a fluidized bed bioreactor by Ca-alginate immobilized biomass of phenol-degrading strains of Bacillus cereus (AKG1 MTCC9817 and AKG2 ...
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