List of Articles

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  1 - Investigating the Effectiveness of the Combined Method of Hierarchical Analysis and SWAT in the Assessment of Firefighting Management in the Fields of Natural Resources of Fars Province (Case Study: Shiraz City)
  Hosein Gharedaghi Zahra Makoolati
  20.1001.1.29810930.1402.1.2.6.4
  Introduction: Identifying the most important factors of fire crisis in the fields of natural resources is of great importance. The purpose of this research is to identify and evaluate the most important influencing factors in dealing with fire in the fields of national More

  Introduction: Identifying the most important factors of fire crisis in the fields of natural resources is of great importance. The purpose of this research is to identify and evaluate the most important influencing factors in dealing with fire in the fields of national resources (forests and rangeland) of Shiraz city by using the combined method of multi-criteria decision making and SWOT. Materials and Methods: The studied area is pastures and forests of Shiraz city. The research sample in this study consists of 20 officials and experts of the General Directorate of Natural Resources and Watershed Management of Fars Province, 4 members of the academic staff of the University and Natural Resources Research Center of Fars Province, 5 members of the Board of Directors of Fars Natural Resources Users Cooperatives and there are a total of 29 people who were randomly selected from the target population of the research. The research questionnaire was prepared using experts' opinions. Results and Discussion: The results showed that the number of 8 points of internal strength was compared to 9 points of internal weakness. The sum of the internal factors is equal to 2.42, which indicates that the upcoming weaknesses will prevail over its strengths. The number of 9 external opportunities against 9 external threats was identified and examined. Given that the sum of external factors in this research is equal to 2.7, which indicates that the upcoming opportunities will overcome its threats. Conclusion: According to the obtained score, a conservative strategy(so) should be implemented, which aims to preserve and maintain the existing situation and use the strengths and overcome the weaknesses. The results of the hierarchical analysis showed that among the strengths, the coordination between the responsible bodies in firefighting, among the weaknesses is the criterion of lack of credit, among the opportunities is also the criterion of the development of facilities and equipment for firefighting, among the threats. The criterion of reducing the belonging of forest dwellers to nearby areas was proposed as a priority in the management of fire fighting. Manuscript profile
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  2 - Flood Potential Evaluation of the Meandering Karkheh River Reach Using the Local Flood Hazard Index
  َAli Liaghat Reza Afshinsharifan
  20.1001.1.29810930.1402.1.2.2.0
  Introduction: Meanders are one of the important geomorphological-hydrological forms, and in terms of the spatial displacements they carry out in the limits of the flood plains, they change the morphological dimensions of the river bed and flood plains. Due to their high More

  Introduction: Meanders are one of the important geomorphological-hydrological forms, and in terms of the spatial displacements they carry out in the limits of the flood plains, they change the morphological dimensions of the river bed and flood plains. Due to their high dynamics, these phenomena also cause major issues and problems in the boundaries of formation. Often, the presence of meanders shows the potential of the river for the occurrence of maximum discharges. In this research, areas with high flood potential in the meandering path of the Karkheh River have been identified using the local flood risk index (LFH). Materials and Methods: In this study, using the LFH index, the flood potential of the meandering paths of Karkheh River was evaluated. LFH is an index that is used to evaluate the potential of flood risk along the meandering path of the river. This index is computed using coefficients and morphological parameters of the catchment (roughness of the basin, drains density, roughness coefficient, elongation coefficient, etc. ) and meander geometric factors (meander length, meander curvature, arc angle, channel width, etc. ). Results and Discussion: The bank full flow rates were estimated using the length of the meander at 44 certain sections in the Karkheh River. results show that in the sections with the increasing meander lengths, flow rate will also be increased. In other words, high flow rates have passed through the large meander arcs. In these 44 sections, the highest discharge belongs to arch 41 with 2521 meters length (the longest arch) and 342.9 CMS flow. the distance of this arch from paypol station is 102.777 km. Also the lowest discharge belongs to arch 7 with 600 meters length (the shortest arch) and 25.88 CMS flow. the distance of arch 7 from paypol station is 15.6 km Conclusion: In overall, computed LFH indices show low flood potential in the Meandering Karkheh River Reach. This result is justified due to drainage density and total lengths of waterways per unit area in the Karkheh river basin. the values of LFH in 18 sections are negative that indicates low flood potential. In contrast, the same values are positive in 26 sections with high flood potential. Manuscript profile
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  3 - Investigating the Effects of Dam Failure in the Downstream Lands Case Study: (Tangab Dam Of Firozabad)
  ALIREZA غلامیGHOLAMI EHSAN SOHRABI SHEKOFTI
  20.1001.1.29810930.1402.1.2.1.9
  Introduction: The safety management of dams and structures in the first step requires the evaluation of the actual conditions in the rivers. In Iran, due to being located in a dry and semi-arid climate, special attention has been paid to dam construction in economic dev More

  Introduction: The safety management of dams and structures in the first step requires the evaluation of the actual conditions in the rivers. In Iran, due to being located in a dry and semi-arid climate, special attention has been paid to dam construction in economic development programs. Therefore, it is necessary to consider safety issues and points before building dams. The purpose of this research is to determine the flood trends caused by the dam failure and also the zoning of the flood caused by the failure in the downstream of the dam. Materials and Methods: This research is located in Tangab dam, 13 kilometers northwest of Firozabad city (Kwar-Firoozabad route), which is located on the Firozabad river. This river is the most important branch of Mond river.. In order to carry out this research, firstly, the studies related to the determination of the dam failure parameter, the determination of the failure shape and the time required to create the failure sections, and then the calculations of the flood discharge and the total discharge using 4 experimental methods including Crick-Patrick, America's water and soil protection, reclamation The lands of America, Singh and Storason were done and the results were modeled with HEC-RAS software. Results and Discussion: Based on the results obtained from the estimation of the flood discharge resulting from the dam failure based on the mentioned 4 experimental methods, it was found that the estimated discharge based on the two water and soil protection methods and the creek method was very close (30309 and 30270 cubic meters per second) to So that the difference in this amount is very small. This difference in flood trends and zoning is also very small. The amount of land under flood in both methods is 140 hectares of agricultural lands, 0.5 hectares of industrial lands and 90 hectares of lands in the river area. In the method of Singh and Storason, compared to the other three methods, it shows a lower discharge, according to this method, 133 hectares of agricultural lands are under flood and 84 hectares are in industrial areas. According to this method, industrial lands are not flooded. In the American land reclamation method, compared to the other three methods, it shows a larger discharge equal to 33914 cubic meters per second, as a result of which 161 hectares of agricultural lands, 1 hectare of industrial lands and 100 hectares in the river are flooded. Conclusion: The results of this research showed that the American land reclamation method is better than the other mentioned methods because it has estimated more flow in flood calculation. An important result of flood zoning resulting from the breaking of Tangab dam is that the urban area of Firozabad is safe from this flood and the villages are not flooded as far as the studied area is concerned. Based on the obtained results, it can be concluded that the result of the possible failure of the dam, based on this research, the flood caused by the failure of the dam, except for 1 hectare of the industrial sector, which is a very small area, will cause damage only to agricultural lands. Manuscript profile
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  4 - Design and simulation of grid-connected hybrid solar-wind power plants to reduce carbon gas emissions in the 30th parallel north
  Amirali Ghahramani8 saman tashakor
  20.1001.1.29810930.1402.1.2.5.3
  Introduction: Renewable energy is one of the vital components in reducing carbon emissions and mitigating climate change. The use of renewable energy sources such as solar, wind, hydro, biomass, and geothermal provides energy without greenhouse gas effects on the planet More

  Introduction: Renewable energy is one of the vital components in reducing carbon emissions and mitigating climate change. The use of renewable energy sources such as solar, wind, hydro, biomass, and geothermal provides energy without greenhouse gas effects on the planet. This study examines the efficiency solar-wind hybrid power plant on the 30th parallel north was studied by simulating energy production in the form of three power generation designs with a nominal capacity of 7 MWh from the solar-wind hybrid power plant in four cities of Cairo, Houston, Chongqing, and Shiraz. The study was conducted using PVsyst, SAM, and Transys software. Materials and Methods: By simulating and analyzing the following three proposed plans in each city and comparing them, it is possible to reach the most efficient range of the power distribution ratio of the combined solar-wind power plant. First plan) 25% of the total power of the power plant is from solar energy and 75% of the total power of the power plant is from wind energy. Second plan) 50% of the total power of the power plant is from solar energy and 50% of the total power of the power plant is from wind energy. Third plan) 75% of the total power of the power plant is from solar energy and 25% of the total power of the power plant is from wind energy. By examining the amount of annual energy injected into the network, the amount and effect of using renewable resources in reducing carbon gas production is analyzed and calculated. Results and Discussion: In addition to providing energy, the combined power plant will increase the reliability factor and preserve non-renewable resources and reduce greenhouse gases. All three software can be used in power plant simulation and analysis and the results are in good agreement. Conclusion: The first design is approximately 30% more efficient than the second design and 85% more than the third design. Shiraz with the production of 48466 megawatts per year reduced carbon dioxide emissions by 23651.408 tons, in Cairo with the production of 45799 megawatts per year the carbon dioxide emissions decreased by 25189.45 tons, Houston with the production of 40979 megawatts per year reduced the carbon dioxide emissions by 15203.209 tons. Manuscript profile
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  5 - Tracking Dust Centers on the Common Border of Iran and Iraq in ten-year period of 2012-2022
  AliAsghar Mirzaei Nowroozani Ali Nik ahd AliEisa Alshoveyli
  20.1001.1.29810930.1402.1.2.3.1
  Introduction: Particulate matter enters the atmosphere mainly from arid and semi-arid regions where annual precipitation is very low and a large amount of alluvial sediments have accumulated over long periods of time. In fact, deserts and dried up lakes that have turned More

  Introduction: Particulate matter enters the atmosphere mainly from arid and semi-arid regions where annual precipitation is very low and a large amount of alluvial sediments have accumulated over long periods of time. In fact, deserts and dried up lakes that have turned into small deserts due to climate change can be considered dust production centers. Iraq is one of the countries that is often affected by dust storms. The purpose of this research is to track, zone and identify dust centers in the border provinces of Iraq and Iran in a ten-year period. Materials and Methods: In order to carry out this research, a 60 km wide area along the Iran-Iraq common border was selected from Maysan and Wasit provinces located in Iraq (about 300 km along the common border). After performing pre-processing on the images (atmospheric and radiometric corrections) using the relevant algorithms, high errors and then using the normalized vegetation index (NDVI) to classify the earth surface phenomena, separately based on the threshold values of these Indexes were categorized. Results and Discussion: Spatial distribution includes three classes a) water areas which are related to areas covered with water, rivers, marshes and wetlands b) bare soil which includes areas without vegetation such as stony areas, uncultivated agricultural lands Sand fields and sand fields and c) Vegetation which includes areas covered with forests, pastures and agricultural lands were categorized and finally the areas prone to dust generation were determined and their area was determined Conclusion: Be made In general, the results of this study with other similar studies in the countries of Iran, Iraq and Saudi Arabia show the effects of drought and the expansion of desert lands and the drying of wetlands, marshes and rivers and the loss of vegetation and the bareness of the land without any cover. It is pasture, forest and agriculture. Due to the large area of deserts, they can be considered the center of growth and zoning of dust storms, and to deal with dust storms, methods such as moistening the soil, biological and mechanical methods such as mulching are performed. Manuscript profile
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  6 - Simultaneous Removal of Copper And Lead Metal Ions From Polluted Water Using Polymer Membrane Modified With Amorphous Silica Nanoparticles
  Bahareh Kamyabmoghadas Nadia Tamimi
  20.1001.1.29810930.1402.1.2.4.2
  Introduction: Heavy metals are one of the main water pollution in environmental problems. There are various methods to remove these pollutions, one of the best methods in this field is membrane processes. The purpose of this research is to remove heavy metals because th More

  Introduction: Heavy metals are one of the main water pollution in environmental problems. There are various methods to remove these pollutions, one of the best methods in this field is membrane processes. The purpose of this research is to remove heavy metals because they are toxic and have many harmful effects on the health of living organisms and the environment. For this purpose, modified polymer membranes were used, which can remove a large percentage of copper and lead ions dissolved in water at the same time. Materials and Methods: In this research, polyether sulfone polymer, N-dimethylacetamide solvent and amorphous silica nanoparticles were used as modifiers. The parameters of the experiment were polymer weight percentage (22-18-14%), nanoparticles weight percentage (0.0-0.1-0.2 weight percent of polymer) and pressure (12-17-22 bar). Results and Discussion: The optimal conditions obtained were 22% polymer membrane, 2% additives at 12 bar pressure, and the result of the test in these conditions was the removal of 74% and 82% of lead and copper, respectively. From the prepared membranes, Fourier transmission infrared spectroscopy (FTIR), scanning electron photography (SEM) and thermometric analysis (TGA) tests were performed. In FTIR analysis, peaks related to functional groups were determined. By examining the SEM test, the presence of silica nanoparticles in the polymer membrane was determined, and the TGA analysis in the modified membrane confirmed the increase in the thermal resistance of the membranes. Conclusion: According to the results obtained from the TGA test, it was found that the membrane modified with silica nanoparticles causes more delay in the degradation time, and the thermal resistance of the membranes modified with silica nanoparticles increases more, as a result, the presence of silica nanoparticles increases the stability of the membrane. According to the comparison and examination of the FT-IR test related to pure nanoparticles, pure polymer membrane and membranes with nanoparticles, in addition to identifying the peaks of the functional group of polyether sulfone polymer, the presence of the peak of silica nanoparticles in the modified membranes was also determined. that the presence of silica nanoparticles inside polyether sulfone polymer membranes was established. Manuscript profile