The purpose of this study is to investigate the relationship between the reflection of soccer via medium and its popularity among Esteghlal and Perspolis fans which attend stadiums during the leagues’ play.With regard to the nature of the research topic and particularly the volume and width of its design the most appropriate method for doing this research is a survey study.The subjects of this research are Esteghlal and Perspolis fanswhich attend Azadi stadium during the matches of these two teams. Since the main location of the matches between these the two teams is Azadi stadium, and during the plays the stadium isfull, as a result the subjects included the major capacity of the stadium which consisted 100, 000 people. Sampling was random. Inurement of this research was a questionnaire with 38 questions. According to the research results there is a meaningful relationship between watching soccer on television and the popularity of it among the fans of Esteghlal and Perspolis. Additionally there is meaningful relationship between using the medium and getting information about the matches’ schedules.However, watching satellite programs or studying the sports newspapers and internet sites have no effect on the popularity of soccer among its fans. Moreover, not only watching 90 programs has no role in peoples’ interest in soccer, but it is proved that the education of fans has no role in their going to stadiums. Finally the research results show that there is a meaningful relationship between using the medium and popularity of soccer among fans of these two teams.

Giving a condition for the amenability of groups, Rosenblatt and Willis first introducedthe concept of configuration. In this paper, we investigate the relationship between ping-pong lemma and configuration sets, and show that only one configuration set is enough to ensure that several elements in a group generates a free subgroup of that group. Using only one two-sided configuration sets, we give, in a sense, a generalization of this result to polycyclic or FC-groups. Finiteness and paradoxical decompositions of groups, are other properties which can be characterized with only one configuration set.

In this survey we highlight the relations between some subgroup embedding properties that characterise groups in which normality is a transitive relation in certain universes of groups with some finiteness properties.

Background. Oxygen transport to tissue after an acute ischemia is strongly important.  Fluorocarbon liquids are able to facilitated the oxygen transport. An animal experiment was designed to study the effect of FC-34 in acute brain ischemia.Methods. The left common carotid arteries were ligated in three groups of anesthetized animals for 30 minutes to obtain acute brain edema. The animals were subjected to received 15 ml/kg saline (group 1), 10% monitol (group 2) or FC-43 (group 3). All animals were recovered, and they monitored for two weeks. The electrolytes, BUN, and creatinine were measured before (all animals) and after two weeks (survived animals). Pathological investigation was obtained by light and electron microscope via pathological process. Findings. The group 1 animals were died during first five days, but one and four animals were survived by two weeks in groups 2 & 3 respectively (P<0.05). The pathological determinations indicate less cellular damages in group 3. No significant differences were detected in potassium, calcium, BUN, and creatinine before and after the experiment.Conclusion. The particle size and oxygen solubility in FC-43 is the major factors for better oxygen transport in ischemic tissues.

The limited availability of fossil fuels, the technical challenges associated with existing vehicles, and their emissions, have made the study of efficient energy converters and clean fuels a top priority for research centers and automobile companies worldwide. Using a hybrid or non-hybrid FC system conventional vehicles can address some of their existing problems. Therefore, this study investigates a Polymer Electrolyte Membrane FC (PEMFC) system for vehicle applications. Modeling is performed using MATLAB software. According to the specifications of real-world samples, system components including stack, hydrogen and air humidifier, air compressor, humidifier pump, and cooling pump are modeled. The results indicate that 14% of the power generated by the FC stack is consumed by the peripheral components. In the basic state at a current density of j=0.7 A/cm2, the total efficiency of the system is 48.15%, while the net efficiency is 34.3%. By fully condensing the water vapor exiting the stack and using it to humidify the reactors, the need for an additional water tank is eliminated. For j<0.047 A/cm2, the stack cannot provide sufficient power for the system components, necessitating an auxiliary energy source, such as a battery, to start operation.