Background and Objective: Increasing industrial activities associated with the production of pollutants, including heavy metals, is one of the main causes of water and soil pollution. Mineral activities are one of the human activities that cause pollution of the natural resources such as soil. Method: In this study, the zoning concentration of copper as soil contamination around Meyduk copper mine was investigated. The direction samples were taken according to the situation of surrounding villages. Systematic sampling of 360 samples had been collected through the directions. Measuring the concentration of sample was done using atomic absorption method in the laboratory. To indicate the degree of soil pollution with heavy metals, Muller’ s geoaccumulation index was used. Finally, in order to estimate the normal concentration of Cu and pollution of soil, Kriging method was used. Results: Results showed that the maximum amount of Cu concentration is 697. 5 mg/kg and the minimum is 6. 35 mg/kg. The Cu concentration trend in direction D was more than direction M due to the direction of local dominant wind. Discussion and Conclusion: By receding from location of mine, the overall trend of Cu concentration decreased. This indicated the role of mine activities on soil pollution.

The purpose of this research is Impact use of education model based on mobile learning environments on Social peresence and teaching peresence for Smart schools students in mathematical lesson. in this research goal, a combination research method was used. In this research we have been used some semi-experimental with pre-test and post-test design with control group. research statistical society are including all girl students are studying in Tehran Smart schools. For testing we have been used respected model volume with using of fast step cluster sampling way between Tehran Smart schools with suitable volume so that finally with pay attention to the resulted test decrease, 15 people have been settled in test group and 15 people in control group. Test group have been settled under provided education by researcher via mobile learning management system. That have been designed based on given model. For studying first and second we were used it by Multivaraite covariance analysis. Results was an indication of that using this sample at all dimensions of social and teaching presence in testing group had more increase than control group. Moreover, total score of social and teaching presence have been increased tangibly more than control group score on prosecution stage.