List of Articles SECA

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  1 - Analysis of Effective Factors on Technology Selection and Ranking of Nitrogen Oxide Emission Reduction Technologies (Case study: Iranian Thermal Power Plants)
  Shirin Azizi Reza Radfar Reza Radfar Ali Rajab zadeh Ghatari
  10.30495/jest.2021.52018.5059
  Background and Objectives: Thermal power plants with significant consumption of fossil fuels play a major role in the production of air pollutants. Nitrogen oxides are among these pollutants. So far, none of Iran's thermal power plants have been equipped with technologi More

  Background and Objectives: Thermal power plants with significant consumption of fossil fuels play a major role in the production of air pollutants. Nitrogen oxides are among these pollutants. So far, none of Iran's thermal power plants have been equipped with technologies to reduce and control nitrogen oxide emissions. Considering the necessity of reducing pollutants caused by fuel combustion in the country's power plants, and imposing excessive social costs due to the excessive emission of pollutants, this article aims to provide a solution to analyze the factors affecting the selection of reducing technologies. Nitrogen oxides with the origin of power plant activities and also their prioritization and selection with the approach of investing in technologies to reduce the emission of this pollutant in Iran's thermal power plants has been done.Material and Methodology: In this research, first, with the widespread knowledge of the researches conducted in this field, the existing technologies in the world and also the most important criteria influencing their effectiveness have been identified and in the next step, in order to adapt these criteria to the conditions of Iran, Fuzzy Delphi technique was used to finalize the criteria. In order to weigh the criteria and then rank the existing technologies, the new SECA ranking technique is used.Findings: The results showed that IFGR technology, OFA, Flameless Combustion, LNB and FR(Fuel reburning) were the first to fifth priority of technology selection,  respectively.Discussion and Conclusion: The sum of these technological assessments will help to create more suitable and sustainable environmental conditions and less vulnerability of ecological systems. Manuscript profile
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  2 - Simulation of Leaky Wave Antenna with Cosecant Squared Pattern Using Genetic Algorithm
  Farnoosh Heidari Zahra Adelpoure Naser Parhizgar
  Realizing a cosecant-squared pattern is a challenging research area due to its widespread use in air-surveillance radar systems wherein the radiation characteristics of the tracking antenna play a significant role in accurate tracking of the targets. However, little res More

  Realizing a cosecant-squared pattern is a challenging research area due to its widespread use in air-surveillance radar systems wherein the radiation characteristics of the tracking antenna play a significant role in accurate tracking of the targets. However, little research has been performed on realizing a cosecant-squared pattern in leaky-wave antennas (LWAs). In this paper, the authors present a synthesis procedure for realizing a cosecant-squared pattern in LWAs using optimization. To achieve the cosecant-squared pattern, the antenna is divided into sections each with an appropriate length, periodicity, and leakage rate. The length of the sections is determined such that all the sections have the same directivity. Moreover, following the appropriate layout for the beam pointing angle of the sections, the periodicity of the sections is obtained. The objective then is to determine the values of the leakage rate. This objective is achieved using optimization, which in this study is a genetic algorithm. To this end, through defining a proper cost function, the objectives are determined following the proposed optimization procedure. The procedure is described within a substrate integrated waveguide (SIW) LWA. A prototype of the antenna is fabricated and measured. Apart from the good agreement between the simulation and the measurement results, the proposed synthesis procedure can provide a target pattern with low ripples in the shaped region (≤ 2 dB) and a low level of side lobes (≤ -18 dB), making the antenna suitable for air-surveillance radar systems. Manuscript profile
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  3 - A meshless technique for nonlinear Volterra-Fredholm integral equations via hybrid of radial basis functions
  Jinoos Nazari Homa Almasieh
  In this paper, an effective technique is proposed to determine thenumerical solution of nonlinear Volterra-Fredholm integralequations (VFIEs) which is based on interpolation by the hybrid ofradial basis functions (RBFs) including both inverse multiquadrics(IMQs), hyperb More

  In this paper, an effective technique is proposed to determine thenumerical solution of nonlinear Volterra-Fredholm integralequations (VFIEs) which is based on interpolation by the hybrid ofradial basis functions (RBFs) including both inverse multiquadrics(IMQs), hyperbolic secant (Sechs) and strictly positive definitefunctions. Zeros of the shifted Legendre polynomial are used asthe collocation points to set up the nonlinear systems. Theintegrals involved in the formulation of the problems areapproximated based on Legendre-Gauss-Lobatto integration rule.This technique is so convenience to implement and yields veryaccurate results compared with the other basis. In addition aconvergence theorem is proved to show the stability of thistechnique. Illustrated examples are included to confirm thevalidity and applicability of the proposed method. The comparisonof the errors is implemented by the other methods in referencesusing both inverse multiquadrics (IMQs), hyperbolic secant (Sechs)and strictly positive definite functions. Manuscript profile
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  4 - Identification and Prioritization of SOx Emission Reduction Technologies Case study:Iranian Thermal Power Plants
  Shirin Azizi reza radfar Hanieh Nikomaram ali Rajabzadeh
  Thermal power plants play a major role in the production of air pollutants, with significant consumption of fossil fuels. Sulfur oxides are among these pollutants.So far, none of Iran's thermal power plants have been equipped with technologies to reduce and control sulf More

  Thermal power plants play a major role in the production of air pollutants, with significant consumption of fossil fuels. Sulfur oxides are among these pollutants.So far, none of Iran's thermal power plants have been equipped with technologies to reduce and control sulfur oxide emissions. Due to the necessity of reducing pollutants caused by fuel combustion in power plants of the country, and imposing high social costs due to the excessive emission of pollutants,This paper seeks to play an effective role in managing the emission of this pollutant by presenting a strategy to prioritize and select sulfur oxide-lowering technology with an investment approach in Iranian thermal power plants. . In this study, fuzzy Delphi technique was used to select the criteria for effective investment in technology and Simultaneous evaluation of criteria and alternatives (SECA)was used to rank SOx-lowering technologies. The results showed that dry scrubber technologies, regenerable process, corona discharge, sorbent injection process and absorption technology were the first to fifth priority of of technology selection, respectively. Manuscript profile
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  5 - Analysis of strain and stress in composite layered plate using shear deformation theory and secant function
  Iman Najimi Saeed Jafari Mehrabadi Peyman Yousefi
  The increasing applications of compound materials in various industries, including aerospace, shipbuilding, micro and macro dimensions have, So researcher special attention to the design of these structures. In this study, static analysis of a rectangular plate with the More

  The increasing applications of compound materials in various industries, including aerospace, shipbuilding, micro and macro dimensions have, So researcher special attention to the design of these structures. In this study, static analysis of a rectangular plate with the special case of high order correction of shear deformation was investigated by considering the, secant function in spatial change field. In this study, the relation between the changes and the Hamilton's principle has been achieved by forming the different energy term of the system. To solving the governing equations, the Navier - stokes equations are implemented using sinusoidal and sinusoidal functions and considering the boundary conditions of the system. By solving the equations, the deflection values of the plates are calculated according to the changes in the system parameters and the obtained results are compared with the results contained in the validated literature and the accuracy of them is sufficient. In conclusion, the bounded analysis with the help of secant functions is very close to the responses obtained from similar researches and in certain cases we can use these functions. Manuscript profile
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  6 - Investigating relative water content, electrolyte leakage, phenolic compounds and activity of phenylalanine ammonia-lyase and tyrosine ammonia-lyase enzymes in triticale leaves treated with sodium chloride and calcium chloride
  Malihe Jahani Mohammad Reza Hadi Mojtaba Jafarinia Sedighe Jahani
  10.30495/zisti.2023.1981463.1157
  Introduction: Considering the increasing number of saline lands due to water scarcity, it seems necessary to investigate ways to increase tolerance to salinity stress. Also, in order to overcome the negative effect of salinity stress, the use of calcium ion supplement i More

  Introduction: Considering the increasing number of saline lands due to water scarcity, it seems necessary to investigate ways to increase tolerance to salinity stress. Also, in order to overcome the negative effect of salinity stress, the use of calcium ion supplement in the growth environment is very useful and practical to improve the stress factor.Objective: The purpose of this research was to investigate relative water content, electrolyte leakage, amount of mineral elements, antioxidant capacity, phenolic compounds and activity of phenylalanine ammonia-lyase and tyrosine ammonia-lyase enzymes in leaves of triticale (x Triticosecale Wittmack) treated with sodium chloride and calcium chloride.Materials and methods: This experiment was conducted as a completely randomized design with 3 replications in controlled greenhouse conditions. One-week-old seedlings were exposed with sodium chloride doses (0, 50, 100 and 150 mmol L-1) and calcium chloride doses (0, 6 and 10 mmol L-1) for 5 weeks and then some physio-morphological and biochemical characteristics including leaf number and surface, relative water content, ion leakage, contents of phenolic compounds (anthocyanin, total phenol, total flavonoid, total flavonol), enzymes activity (phenylalanine ammonia-lyase, tyrosine ammonia-lyase, glutathione reductase, glutathione S-transferase), antioxidant capacity and amount of mineral elements (sodium, potassium, calcium) were measured in leaves.Results: The results showed that salt stress significantly decreased the number and surface of leaves, relative water content, activity of glutathione reductase enzyme, the amount of potassium and calcium in leaves, but increased ion leakage, the contents of phenolic compounds, activity of phenylalanine ammonia-lyase, tyrosine ammonia-lyase and glutathione S-transferase enzymes, antioxidant capacity and sodium content in leaves. While the addition of calcium to saline environment increased the number and surface area of leaves, relative water content, activity of glutathione reductase enzyme, the amount of potassium and calcium in leaves, but decreased ion leakage, the contents of phenolic compounds, activity of phenylalanine ammonia-lyase, tyrosine ammonia-lyase and glutathione S-transferase enzymes, antioxidant capacity and sodium content in leaves.Conclusion: Calcium reduced the harmful effects of salinity stress in leaves of triticale plant, so adding calcium to salty soils can be a simple, practical and economic solution to deal with salinity stress and increase soil productivity and a step towards to provide sustainable agriculture. Manuscript profile
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  7 - Pattern Synthesis of Substrate Integrated Waveguide Leaky-Wave Antennas Using Optimization Algorithm
  Farnoosh Heidari Zahra Adelpour Naser Parhizgar
  In the modern era, the antennas with cosecant squared pattern play a significant role in radar applic­ations. These applications are used to cover an airspace to search for targets and estimate their height. In this article, a method is proposed for the synthesis of More

  In the modern era, the antennas with cosecant squared pattern play a significant role in radar applic­ations. These applications are used to cover an airspace to search for targets and estimate their height. In this article, a method is proposed for the synthesis of cosecant squared pattern using leaky wave antenna. The principal mechanism in the leaky wave antennae is wave attenuation due to power leakage while the wave propagates through the structure. Thus, by controlling the leakage and phase constants along the length of the structure, one can synthesize the desired radiation patterns. We have used the genetic algorithm to optimize the leakage constant and obtain the desired cosecant squared pattern In the range of 10 to 30 degrees. Conformity in simulation results and measured results indicates accuracy in the design process. The proposed method obtains the desired pattern with a ripple of less than 2 dB in the designated area and side lobe level less than -18 dB, which makes the antenna suitable for radar applications. Manuscript profile
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  8 - یک روش ترکیبی جدید گرادیان مزدوج مبتنی بر معادله سکانت برای حل مسائل بهینه سازی مقیاس بزرگ
  نصیرو صلیحو Mathew Odekunle Mohammed Waziri Abubakar Halilu
  انواع زیادی از الگوریتم های گرادیان مزدوج وجود دارد. به منظور بهره گیری از ویژگی های جذاب روش های لیو و استوری (LS) و  سکانت مزدوج (CD) و روش گرادیان مزدوج ، ما ترکیبی از این روش ها که در آن پارامتر به عنوان ترکیبی محدب محاسبه می شود و به ترتیب پارامتر گرادیان (برو More

  انواع زیادی از الگوریتم های گرادیان مزدوج وجود دارد. به منظور بهره گیری از ویژگی های جذاب روش های لیو و استوری (LS) و  سکانت مزدوج (CD) و روش گرادیان مزدوج ، ما ترکیبی از این روش ها که در آن پارامتر به عنوان ترکیبی محدب محاسبه می شود و به ترتیب پارامتر گرادیان (بروزرسانی) از معادله Secant بدست آمده است را پیشنهاد می کنیم. الگوریتم جهت  نزول را ایجاد می کند و هنگامی که فشردگی تگرار می شود جهت شرایط مناسب نزول را برآورده می کند. گزارش نتایج عددی نشان دهنده کارایی روش ما است.طرح محاسباتی ترکیبی عملکرد بهتری دارد یا قابل مقایسه با الگوریتم گرادیان مزدوج  شناخته شده است. همچنین نشان می دهد که روش ما در سطح جهانی با استفاده از شرایط ولف قوی همگراست. Manuscript profile
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  9 - Effect of vermicompost and mycorrhiza fungi on yield and growth of milk thistle and antioxidant system activity.
  Foroozan Nikkah Naeeni Ali Reza Ladan Moghadam Pezhman Moradi Mehdi Rezaei Vahid Abdoosi
  10.30495/ijpp.2017.533560
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  10 - نقش توانمندسازی اقتصادی در راهبرد اقتصاد مقاومتی در کشورهای در حال توسعه
  احمد جعفری صمیمی کورش اعظمی
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  11 - Growth Responses of Secale cereale and S. ceremont to Priming Treatments under Salinity Stress
  Seyed Morteza Araghi Shahri Ghasem Ali Dianati Tilaki Behzad Behtari Mohammad Ali Alizadeh
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  12 - Comparative Effects of Hydropriming and Halopriming on Germination Performance of Secale montanum Guss. under Salinity Stress
  Seyed Morteza Araghi Shahri Ghasem Ali Dianati Tilaki Behzad Behtari Mohammad Ali Alizadeh
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  13 - Effects of Selection on Genetic Parameters of Secale montanum Based on Seed Storage Protein Marker
  Parvin Salehi Shanjani Ali Ashraf Jafari Roya Hoseinzadeh
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  14 - The effect of different levels of salinity and drought on germination charactirictics of Secale montanum in early growth stages
  P. Gholami J. Ghorbani Sh. Ghaedi
  Using rangeland species resistant to drought and salinity is essentioal for reform and development of rangelands. Secale montanum species is an important grass for pasture and forage production. Considering the importance of this species in the rangelands and, lack of r More

  Using rangeland species resistant to drought and salinity is essentioal for reform and development of rangelands. Secale montanum species is an important grass for pasture and forage production. Considering the importance of this species in the rangelands and, lack of research on its resistant to drought and salinity, this study was carried out to investigate the amount of resistance to drought and salinity stress and effects of these two stresses on the germination, radicle length and Plumule length of Secale montanum. To create different potentials of drought stress and salinity poly etanol glycol (PEG 6000) and NaCl were used, respectively. This study was performed on completely randomized design with 4 replications and 5 drought treatments including (0, 0.2, 0.4, 0.6, 0.8 MP of PEG 6000 solutions) and (0, 50, 100, 150, 200 and 300 mM of NaCl). Results showed a significant effect of salinity and drought stress on seed germination indices. The percentage of germination, seed germination rate and plumule and radicle length, seed vigor, significantly reduced under both stresses. an�(eF�u�uan>چه و طول ساقه­چه گونه مذکور مورد بررسی قرار گرفته است. برای ایجاد تنش شوری از کلرید سدیم (NaCl) و برای اعمال تنش­های خشکی مختلف از پلی­اتیلن گلیکول (PEG6000) استفاده شد. طرح آزمایشی به صورت طرح کاملاً تصادفی با آرایش فاکتوریل در چهار تکرار و پنج سطح شوری (شاهد، 50 ، 100، 150، 200 و 300 میلی­مولار) و همچنین پنج سطح خشکی (شاهد (صفر)، 2/0-، 4/0-، 6/0- و 8/0- مگاپاسکال) بوده است. نتایج آنالیز واریانس نشان داد که تیمارهای شوری و خشکی بر درصد جوانه­زنی، سرعت جوانه­زنی، طول ریشه­چه، طول ساقه­چه و بنیه بذر اثر معنی­داری داشتند، به طوری که با افزایش تنش شوری و خشکی درصد جوانه­زنی، سرعت جوانه­زنی، طول سـاقه­چه و طول ریشه­چه کاهش یافتند.   Manuscript profile
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  15 - Allelopathical weed control in potato (Solanum tuberosum L.)
  A. jahedi
  Application of allelopathic plants for the control of weeds in many crops has been proved. This field study was conducted for two years (2001-2002) at Hamadan agricultural research center. Experiments were a factorial design based on randomized complete block with 8 tre More

  Application of allelopathic plants for the control of weeds in many crops has been proved. This field study was conducted for two years (2001-2002) at Hamadan agricultural research center. Experiments were a factorial design based on randomized complete block with 8 treatments and 4 replications. Three crops (Brassica napus, Vicea sativa, Secal cereal) as allelopathical crops were cultivated by alone, double and treble at autumn season and as green manure, mixed with soil at spring, and then a week after, potato (Agria) was planted in plots. Results showed that, there were significant differences in all measured parameters include of fresh weight of cover crops (g/m2 ), fresh weight of weeds  (g/m2 ), number of weeds per square meter and potato yield (t/ha). S. cereal treatment has the highest fresh weight between cover crops. All of treatments could reduce number and weight in weeds at comparison with check treatments (without cover crop). Yield of potato increased by 40% in top treatment (S. cereal) in comparison with check treat. The final results revealed that, the allelophathical plants as cover crops, before potato, not only increases yield, but also decrease weed population in potato field without usage of herbicides. Manuscript profile