For the past three decades the quantity of petroleum (both oil and oil plus gas) found per foot of drilling effort in the United States for any given year can be expressed as a secular decrease of about 2 percent per year combined with an inverse function of drilling effort for that year. Extrapolation of energy costs and gains from petroleum drilling and extraction indicates that drilling for ...

On a preliminary screening, substantial leishmanicidal activity was observed for the petroleum ether and alkaloidal extracts of the stem bark of Unonopsis buchtienii, the alkaloids and sterols isolated from these were studied. Of the alkaloids, liriodenine exhibited the highest activity against Leishmania major and L donovani (IC100 = 3.12 micrograms/mL). On the other hand, O-methylmoschatoline...

Effective and careful research has been performed by the Section of Mechanics Teaching and Research, Southwest Petroleum University on the content, status, student characteristics of the non-mechanical and non-civil-engineering engineering mechanics course system. Reform ideas and measures, which are also applicable to other common colleges, have been suggested in the course content and course ...

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...

Anthropogenic forces, such as petroleum spills and the incomplete combustion of fossil fuels, have caused an accumulation of petroleum hydrocarbons in the environment. The accumulation of petroleum and its derivatives now constitutes an important environmental problem. Biocatalysis introduces new ways to improve the development of bioremediation strategies. The recent application of molecular t...

The Fiji Platform developed as an island arc in the Tertiary. Extensional and transpressional tectonics have deformed the fill of extensive sedimentary basins within the Platform. These basins commonly contain over 3 km of stratified deposits. Five deep petroleum-exploration wells were drilled between 1980 and 1982, but all were dry. There remain reasonable prospects, however, because none of t...

One of the aims of micropaleontological studies is to unravel the geological history of the surface of the earth in a manner that can be achieved as reliably, in relatively quick time and at the same time be economically be reasonable. Oil companies, who invest hugely in this high risk business of oil exploration, have undoubtedly gained much from micropaleontological studies. This is because o...

The petroleum compounds were photocatalytically remediated from water using graphene (G)titanium oxide (TiO2) nanocomposite material in visible light radiation. The G-TiO2 nanocomposite was synthesized using sol-gel technique, and its structural & morphological properties were studied using scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), part...

There have been several recent studies of the Japanese oil industry, but they have all focused on the impact of the abolition of the Tokusekiho, the Provisional Law relating to the Importation of Specified Petroleum Products, that restricted the importation of specified petroleum products to limited number of companies. The Tokusekiho, was abolished at the end of March 1996. However, despite th...

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...