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        1 - Investigating the impact of complexity and economic growth on carbon dioxide emissions
        Mohammad Arrekesh Salmasi seyedkamal sadeghi
        The purpose of this article is to investigate the relationship between the Environmental Couzens Curve (EKC) and the Economic Complexity Index (ECI) as a differentiating element of the production volume for Iran. To investigate the relationship between the variables of More
        The purpose of this article is to investigate the relationship between the Environmental Couzens Curve (EKC) and the Economic Complexity Index (ECI) as a differentiating element of the production volume for Iran. To investigate the relationship between the variables of the Vector Error Correction Model (VECM) for the period of 1389-1399 Dynamic least squares, modified least squares, collinearity test and Johanson test were used. In order to investigate the factors affecting the emission of carbon dioxide gas, the traditional variables shown by the environmental Kuznets curve data of 1389-1399 have been used. These variables include GDP per capita, urban population, electricity consumption (kilowatt hours per capita). ), foreign direct investment, import and export of goods and services (percentage of gross domestic product) which was prepared from Iran Statistics Center, Environmental Organization and Central Bank. Mann (2009) was used. The research results show that economic complexity has no effect on carbon dioxide emissions, but increasing production and energy consumption and increasing exports and decreasing imports are effective on carbon dioxide emissions. Also, between increasing per capita income, capital No significant relationship was found between direct foreign investment and carbon dioxide emissions. According to the research results, it is suggested to use renewable energy in production and export and import laws should be based on reducing environmental risks. Manuscript profile
      • Open Access Article

        2 - The effects of US sanctions on the production of carbon dioxide greenhouse gases in Iran
        fateme ahmadi
        In 2019, Iran ranked eighth in the world in terms of the amount of carbon dioxide produced and polluting the earth, and higher than England, France, Italy, Canada, Turkey, Mexico, Indonesia, etc. But the environmental realities of Iran are even more terrible than these More
        In 2019, Iran ranked eighth in the world in terms of the amount of carbon dioxide produced and polluting the earth, and higher than England, France, Italy, Canada, Turkey, Mexico, Indonesia, etc. But the environmental realities of Iran are even more terrible than these statistics. Because by calculating the destruction of surface and underground water, forests and pastures, this country is facing a much deeper crisis. Iran has a very fragile environmental situation and is at the forefront of the fight against global warming. This vast country is located in the desert belt and dry and crisis-stricken region of the Middle East and between war-torn countries such as Afghanistan, Iraq and Syria. With the destruction of underground water resources and the forests and pastures of the region and the increase in the use of fossil fuels, irreparable damage has been done to the region's environment. In such a situation, economic sanctions against Iran make the situation worse. This issue has not received much attention from politicians and even environmentalists. How will the air on the planet become hotter and more polluted with the sanctions on Iran, and its smoke will reach the eyes of all the people of the world, including the embargoing countries? Manuscript profile
      • Open Access Article

        3 - Application of electrospun nanofibers for gaseous pollutants adsorption
        hanieh shaki
        Carbon dioxide is the most important greenhouse gas that is released in large quantities into the atmosphere. Excess carbon dioxide in the atmosphere is a problem for earth and increase the temperature and creates problems that affect human existence, such as severe tor More
        Carbon dioxide is the most important greenhouse gas that is released in large quantities into the atmosphere. Excess carbon dioxide in the atmosphere is a problem for earth and increase the temperature and creates problems that affect human existence, such as severe tornadoes, storms, floods, droughts and acid rain. The largest source of outdoor CO2 is fossil fuel combustion, which are the main source of energy used to meet human energy demand now and in the near future. In recent years, nanofiber membranes have been highly regarded as pollutant adsorbents compared to conventional adsorbents, they have properties such as porous structure, high specific surface area, high penetration flux and selectivity, low pressure drop, high flexibility and targeted adsorption. So, electrospun nanofiber membranes have excellent potential for adsorption and separation of carbon dioxide from the air. In addition to the extremely high surface to volume ratio, modified electrospun nanofibers have different functional groups that improve their performance. Therefore, electrospun nanofiber membranes have excellent potential for adsorption and separation of carbon dioxide from the air Manuscript profile
      • Open Access Article

        4 - Investigating the impact of complexity and economic growth on carbon dioxide emissions
        seyedkamal sadeghi Mohammad Arrekesh Salmasi
        Sadeghi SeyyedKamal Arrekesh Salmasi Mohammad Abstract The purpose of this article is to investigate the relationship between the Environmental Couzens Curve (EKC) and the Economic Complexity Index (ECI) as a differentiating element of the production volume f More
        Sadeghi SeyyedKamal Arrekesh Salmasi Mohammad Abstract The purpose of this article is to investigate the relationship between the Environmental Couzens Curve (EKC) and the Economic Complexity Index (ECI) as a differentiating element of the production volume for Iran. To investigate the relationship between the variables of the Vector Error Correction Model (VECM) for the period of 2019-2020 Dynamic least squares, modified least squares, collinearity test and Johanson test were used. In order to investigate the factors affecting the emission of carbon dioxide gas, the traditional variables shown by the environmental Kuznets curve data of 1389-1399 have been used. These variables include GDP per capita, urban population, electricity consumption (kilowatt hours per capita), foreign direct investment, import and export of goods and services (percentage of gross domestic product) which was prepared from Iran Statistics Center, Environmental Organization and Central Bank... to obtain economic complexity (ECI) from the model proposed by Hidalgo and House Mann (2009) was used. The research results show that economic complexity has no effect on carbon dioxide emissions, but increasing production and energy consumption and increasing exports and decreasing imports are effective on carbon dioxide emissions. Also, between increasing per capita income, capital No significant relationship was found between foreign direct investment and carbon dioxide emissions. According to the research results, it is suggested to use renewable energy in production and export and import laws should be based on reducing environmental risks. Manuscript profile