The Propose of this paper is to introduce a new model for crude oil fouling in preheat trains of crude distillation unit. The experimental results of Australian light crude oil with the tube side surface temperatures between 200-260 oC and fluid velocity ranged 0.25 to 0.4m/s were used. The activation energy of chemical reaction depends on the surface temperature has been calcula...

The need of heavy and unconventional crude oil as an energy source is increasing day by day, so does the importance of petroleomics: the pursuit of detailed knowledge of heavy crude oil. Crude oil needs techniques with ultra-high resolving capabilities to resolve its complex characteristics. Therefore, ultra-high resolution mass spectrometry represented by Fourier transform ion cyclotron resona...

Abstract: This paper discusses two topics. At first, it uses continuous wavelet (Morlet) transform, coherency, and phase angle analysis to study the effect of mean volatility in OPEC Crude Oil prices, WTI crude oil prices, Brent Crude oil prices and Iran’s crude oil prices on The Iran’s REER. To this end, the monthly data of the variables for years 2003 to 2012 is used. Coherency analysis rev...

The major oil industry upstream activities include the exploration, drilling, extraction, pipelines installation, and production of crude oil. In this paper, we develop a mathematical model to plan for theseoperations as a crude oil supply chain network design problem.The proposed multi-period mixed integer linear programming model entails both strategic (e.g., facility location and allocation)...

in general, energy prices, such as those of crude oil, are affected by deterministic events such as seasonal changes as well as non-deterministic events such as geopolitical events. it is the non-deterministic events which cause the prices to vary randomly and makes price prediction a difficult task. one could argue that these random changes act like noise which effects the deterministic variat...

The main purpose of this paper is to evaluate the effect of crude oil price on global fertilizer prices in both the mean and volatility. The endogenous structural breakpoint unit root test, the autoregressive distributed lag (ARDL) model, and alternative volatility models, including the generalized autoregressive conditional heteroskedasticity (GARCH) model, Exponential GARCH (EGARCH) model, an...

the present study investigated the isolation and identification of biosurfactant producing bacteria from iranian oil wells. the biosurfactant production of bacteria isolates was evaluated and confirmed using hemolysis and emulsification tests. the biodegradation of crude oil was studied using gc and hplc analysis. a total of 45 strains have been isolated. these strains showed less than a 40 mn ...

We study uniform spanning forest measures on innnite graphs, which are weak limits of uniform spanning tree measures from nite subgraphs. These limits can be taken with free (FSF) or wired (WSF) boundary conditions. Pemantle (1991) proved that the free and wired spanning forests coincide in Z d and that they give a single tree ii d 6 4. In the present work, we extend Pemantle's alternative to g...

I recall an Indian proverb saying that, as all rivers find the same ocean, so too do all paths reach the same source. Perhaps this is a fitting analogy for the World Social Forum (WSF), the fourth of which was recently held in Mumbai India from the 16th 21st of January. For as each of the over 130,000 droplets arrived by plane, train, rickshaw, bicycle and by foot, they began self-organising in...

in this research the effects of crude oil on morphological and physiological characterization ofthe cyanobacterium microchaete tenera isc13 were investigated. isolated cyanobacterium treated with different oil concentrations (control, 1, 2.5, 5 and 7%) in carbonless bg110 medium. morphological characteristics such as morphology of filament, cellular shapes and sizes, relative position of hetero...