In this study, two units of production of synthesis GAS has been stimulated into 2 forms of natural GAS complex reforming and DRY reforming. they have been examined from technical and economical views. The product from this process is synthesis GAS by the unit ratio of Hydrogen and Carbon Monoxide (H2/CO =1) which is used in Arak petrochemical complex for producing 2EH. For producing this synthesis GAS in 900C (reactor temperature) and 15 bar of total pressure, the ratio of feeding parts into reforming reactor for total input carbon (methane and other hydrocarbon) and Carbon dioxide GAS and water vapor in representation [CH4 + equivalent carbon in other hydrocarbons: CO2: H2O] for complex reforming equals [1: 2.5: 2.15], and for DRY reforming equals [1: 1: 0.33]. The Result of mentioned simulation clarifies the percentage of saving fuel GAS, Electrical Energy, water and Carbon dioxide in DRY reforming to complex reforming. In this study, operational conditions and costs of energy and materials are the same real costs in production unit of synthesis GAS in Arak petrochemical complex. By comparing the results out of the two simulated units it is shown that the total operational costs of the current unit will decrease more than twice in case of changing to DRY reforming.

RF receive and transmit non-homogeneity is one of the most effective causes of image non-uniformity in MRI images and is considered as an important source of error in quantitative studies. Part of this non-homogeneity is a characteristic of RF coils and part of it, is due to the interaction of RF field with the body being imaged. In this study, RF field non-homogeneity of a volume head coil is measured in human brain (In vivo) as well as in water and oil phantoms, using a method which was proposed by this group formerly. Comparing the results shows that RF non-homogeneity in water phantom is more than its value in oil phantom. It was also shown that it was even more than its value in human brain In vivo conditions. Non uniformity pattern shows that in both In vivo and water phantom cases, standing wave effect is dominant under our experimental conditions which may cause over-estimating in real magnitudes of Rf non-homogeneity and imaging effective parameters, such that, should has been considered in designing of MRI related phantoms.