خلاصه ماشینی:
Based on the results of the regression analysis, the nine following factors affecting socio-economic development have the greatest impact on reducing the value of ecosystem services in the region, respectively: the increase in the number of roads, number of employees, population, public vehicles, non-agricultural income, value of industrial assets, number of immigrants, size of agricultural plots, and GDP.
The economic factors studied in this research include the degree of trade openness, the share of industry in the GDP, investment in physical capital, population density, the percentage of urbanization and democracy, which is in the form of an economic model and its estimation is based on the dynamic spatial panel approach.
The inference of DSDM in equation )1( should be based on the expression of the partial derivative and the calculation of direct, indirect, and total effects The geographical area of this research is the countries of the Middle East and North Africa region )MENA( including 19 countries, Iran, Algeria, Bahrain, Djibouti, Egypt, Iraq, Jordan, Kuwait, Lebanon, Libya, Morocco, Oman, Occupied Palestine, Qatar, Saudi Arabia, Syria, Tunisia, UAE, and Yemen The economic factors studied in this research include the degree of trade openness, the share of industry in the GDP, investment in physical capital, population growth, the percentage of urbanization and democracy.
The purpose of this study is to use nanobubbles to supply oxygen to the aeration reactor in the activated sludge process and to evaluate its performance in terms of increasing the efficiency of wastewater treatment, reducing energy consumption, reducing the amount of excess sludge and its impact on environmental factors.