نتایج جستجو برای: oil resources
تعداد نتایج: 402688 فیلتر نتایج به سال:
The Hubbert model assumes that the worldwide production of crude oil will follow a bell-shaped curve. Oil prices are expected to increase, or even to spike up, at or after the production peak. However, the Hubbert model provides no description of price trends. We also lack historical data that can be used as a guide, since so far there have been no cases of a complete, worldwide depletion of a ...
This work describes the tribochemical evaluation of vegetable oil based antiwear additive obtained through chemical modification. The Sulfur was incorporated using a chemical reaction of epoxidized vegetable oil and common thiols, resulting in formation of a hydroxy thioether derivative of vegetable oils. The synthesis retains the vegetable oil structure, eliminates poly-unsaturation in the mol...
Extraction and transportation of mineral resources today presents an increasing social problem, leading to environmental damage and the violation of human rights. In addition to economic and social controversies as well as political problems (such as corruption amongst state and local authorities), it caused population displacement on a large scale. The social costs of oil production illustrate...
How are events surrounding the latest Iraq war shaping the future global political economy of oil? The saliency of Iraq’s oil resources suggests a trend towards intensified great-power competition to dominate energy-rich provinces and transportation corridors. Yet, the nature of the oil trade, Iraq’s insurrection, and Sino-American economic interdependence indicate barriers to unilateral attemp...
The problem of degradation of agricultural residues from palm oil industry is increasing due to its expansion. Lignocelloulosic waste from these industry represent large amount of unutilized resources, this is due to their high lignin content. Since white rot fungi are capable of degrading lignin, its potential for the degradation of lignocelloulosic waste from palm oil industry was accessed. T...
Education, Benefitting from Oil Revenues, and Sustainable Development A. Ansari, Ph.D. To assess the status of Iranian educational system within a special conceptual framework of economic development, a number of existing documents related to the expenditure of oil revenues on education were critically reviewed. The results show that within any economic framework in which sustainable deve...
In addition to external oiling, marine oil spills may affect vertebrate animals through degradation of habitat; alterations in food web structure; and contamination of resources by toxic compounds, including polycyclic aromatic hydrocarbons. These processes are not well understood for vertebrates breeding and foraging in terrestrial ecosystems affected by oil, such as coastal marshes that were ...
“Financial system” enforces long and stable restrictions through assigning numerical limitations on the fundamental indices of budget. After such restrictions are formed, the determined quantities are not changeable during the relevant time period and such determined quantities would be the guideline for the execution of financial policies. By being dependent on oil revenues in an unbalanced m...
Oil and gas as the non-renewable resources are considered very valuable for the countries with petroleum economics. These resources are not only diffused equally around the world, but also they are common in some places which their neighbors often come into conflicts. Consequently, it is vital for those countries to manage their resource utilization. Lately, game theory was applied in conflict ...
North American Natural Gas Supply Forecast: The Hubbert Method Including the Effects of Institutions
In this article, the U.S. and southern Canadian natural gas supply market is considered. An important model for oil and natural gas supply is the Hubbert curve. Not all regions of the world are producing oil or natural gas following a Hubbert curve, even when price and market conditions are accounted for. One reason is that institutions are affecting supply. We investigate the possible effects ...
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