a one dimensional dynamic model for a riser reactor in a fluidized bed catalytic cracking unit (fccu) for gasoil feed has been developed in two distinct conditions, one for industrial fccu and another for fccu using various frequencies of microwave energy spaced at the height of the riser reactor (fccu-mw). in addition, in order to increase the accuracy of component and bulk diffusion, instanta...

the changes in todays world organization, to the extent that instability can be characterized with the most stable organizations called this afternoon. if you ever change management component, an additional value to the organization was considered, today, these elements become the foundation the organization is survival. the definition of the entrepreneur to identify opportunities to exploit a...

today, the route for economic development in most countries is the same as international open competitive economy. economic institutes well known that supportive public economy belonged on the past and they may compete in the global economy. it is obvious that if they have no competitive potency or not familiar with competition technique, they may be devastated. banking system aims to collect t...

Although carpet has a very long history in Iran, the purpose of this article is to study one of the most important periods of Persian art history before the Safavid, Turkomani Period; and one of the most important ways to know these period carpets is the reports of European tourists, especially the Venetian merchantschr('39') from Tabriz, pointing to the beautiful rugs of the Blue Mosque and th...

for a given riemannian manifold (m,g),it is an interesting question to study the existence of a conformal diffemorphism (also called as a conformal transformation) f : m ! m such that the metric g? = fg has one of the following properties: (i)(m; g?) has constant scalar curvature. (ii)(m; g?) is an einstein manifold.

an investigation into oral interaction in language classes: a conversation analytic point of view the aim of this thesis is to analyze the interaction between language teachers and students in english language institutes. this work is done in the context of yasuj city. learning another language, which is in most cases english, involves many variables. one of these variables is the linguistic...

The greatest reputation of Iranian handmade carpets is after the beauty of its design, its brightness, its durability and its longevity. Some of these carpets, which are a valuable treasure of the art of this border, are kept in museums and collections that are surrounded by conditions Non-normative acts cause serious damage, and sometimes even damage to them. Air pollutants are very numerous ...

 Logo designing is one of basic and scientific topics of graphics which interconnects to other parts of graphics by its own intrinsic characteristics. Instant and visual relationship of these logos with addressees conveys their spiritual and concise interior behind attractive exterior. Mysteries hidden in Persian carpet make it last and eloquently depict the cultures, traditions, cheers an...

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...