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Inhibiting soil loss and runoff from small plots induced by an individual freeze-thaw cycle using three rangeland species

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International Soil and Water Conservation Research 2020年第3期8卷 228-236页

作者： Milad Hatefi Seyed Hamidreza Sadeghi Reza Erfanzadeh morteza Behzadfar Department of Watershed Management Engineering Faculty of Natural ResourcesTarbiat Modares UniversityIran Department of Rangeland Management Faculty of Natural ResourcesTarbiat Modares UniversityNoorIran

This study investigated the role of three rangeland species *** trichophorum,Medicago sativa,and Lolium prenne on mitigating of effects of a freeze-thaw(FT)cycle on runoff generation and soil loss from small experimental *** plots(0.5×0.5m)were prepared in three replicates for control(i.e.,under a FT cycle only)and treatments(i.e.,individually planted with the study species and subject to a FT cycle).The treated plots were then placed at a slope of 20%and subjected to simulated rainfall with intensity of 70 mm h-1 and 30 min *** results of the study showed a significant effect(P<0.05)of the plants on controlling runoff and soil loss after a FT ***,the detrimental effects of the FT cycle due to performance of ice lenses and formation of an active melting layer in the soil surface were ameliorated by the presence of litter on the soil and root-binding effect of the *** to runoff increased by 54,111 and 10%,runoff volume decreased by 27,68 and 0.4%and soil loss changed by-34,-62,and+6.5%in the plots planted with ***,*** and ***,*** results of the current study indicated that *** had the maximum benefit on reducing runoff and soil loss from the plots undergoing a FT cycle.

关键词： Biological measures Frosted soil Plant binding effects Soil hydrology

Investigation of Poly(ether-b-amide)/Nanosilica Membranes for CO_2/CH_4 Separation

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Chinese Journal of Polymer Science 2014年第4期32卷 402-410页

作者： Ehsan Seddigh morteza Azizi Ehsan Shirzaei Sani Davod Mohebbi-Kalhori Department of Chemical Engineering University of Sistan and Baluchestan

The results of molecular dynamics （MD） simulations on transport process of CO2 and CH4 gases in poly（ether-b- amide）（PEBAX）/nanosilica membranes are discussed. The diffusion coefficients for CH4 and CO2 gases at 6 cases with different amounts of nanosilica loading in the simulation boxes are presented. The results show that diffusion coefficients for CO2 gas in all cases are larger than those for the CH4 one. Moreover 10% nanosilica loading case shows maximum effects on diffusion coefficients and improves them by more than 68% and 157% for CO2 and CH4 gases, respectively. Additionally, the results of 3-D Cartesian trajectories and displacements curves are presented and the jumping attempt of CO2 is significantly more than that of CH4. Due to the rubbery state of PEBAX membranes in ambient temperature, the results confirm that channel lifetimes are very short and then back diffusion is not observed for this polymer.

关键词： Gas separation Polymeric membrane Molecular dynamics Diffusion coefficient.

Classification of Krasner Hyperfields of Order 4

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Acta Mathematica Sinica,English Series 2020年第8期36卷 889-902页

作者： Mahdeyeh IRANMANESH morteza JAFARPOUR Hossien AGHABOZORGI Jian Ming ZHAN Department of Mathematics Vali-e-Asr University of RafsanjanRafsanjanIran Department of Mathematics Hubei University for NationalitiesEnshi 445000P.R.China

In this paper,first we introduce n-polygroups and characterize 2-polygroups of order 4 up to *** using 2-polygroups we introduce 2-Krasner hyperfields and we show that there exactly exists one 2-Krasner hyperfield of order ***,we propose a hyperfield of order 4 which is not as a quotient hyperfield F/***,some programs written in MATLAB which are based on obtained results compute the number of polygroups,weak polygroups and Krasner hyperfields of order4 up to isomorphism.

关键词： (semi)hypergroup n-polygroup Krasner hyperfield isomorphism

A predictive equation for residual strength using a hybrid of subset selection of maximum dissimilarity method with Pareto optimal multi-gene genetic programming

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Geoscience Frontiers 2021年第5期12卷 342-354页

作者： Hossien Riahi-Madvar Mahsa Gholami Bahram Gharabaghi Seyed morteza Seyedian Department of Water Engineering Faculty of AgricultureVali-e-Asr University of RafsanjanRafsanjanIran Department of Civil Engineering Faculty of EngineeringBu-Ali Sina UniversityHamedanIran School of Engineering University of GuelphGuelphOntario N1G 2W1Canada Department of Water Engineering Faculty of AgricultureGhonbad Kavous UniversityGhonbad KavousIran

More accurate and reliable estimation of residual strength friction angle(/r)of clay is crucial in many geotechnical engineering applications,including riverbank stability analysis,design,and assessment of earthen dam slope ***,a general predictive equation for/r,with applicability in a wide range of effective parameters,remains an important research *** goal of this study is to develop a more accurate equation for/r using the Pareto Optimal Multi-gene Genetic Programming(POMGGP)approach by evaluating a comprehensive dataset of 290 experiments compiled from published literature databases worldwide.A new framework for integrated equation derivation proposed that hybridizes the Subset Selection of Maximum Dissimilarity Method(SSMD)with Multi-gene Genetic Programming(MGP)and Pareto-optimality(PO)to find an accurate equation for/r with wide range *** final predictive equation resulted from POMGGP modeling was assessed in comparison with some previously published machine learning-based equations using statistical error analysis criteria,Taylor diagram,revised discrepancy ratio(RDR),and scatter *** on the results,the POMGGP has the lowest uncertainty with U95=2.25,when compared with Artificial Neural Network(ANN)(U95=2.3),Bayesian Regularization Neural Network(BRNN)(U95=2.94),Levenberg-Marquardt Neural Network(LMNN)(U95=3.3),and Differential Evolution Neural Network(DENN)(U95=2.37).The more reliable results in estimation of/r derived by POMGGP with reliability 59.3%,and resiliency 60%in comparison with ANN(reliability=30.23%,resiliency=28.33%),BRNN(reliability=10.47%,resiliency=10.39%),LMNN(reliability=19.77%,resiliency=20.29%)and DENN(reliability=27.91%,resiliency=24.19%).Besides the simplicity and ease of application of the new POMGGP equation to a broad range of conditions,using the uncertainty,reliability,and resilience analysis confirmed that the derived equation for/r significantly outperformed other existing machine learning

关键词： Earth slopes Friction angle Maximum dissimilarity Multi-gene genetic programming Pareto-optimality Residual strength

Targetry of MoO_3 on a copper substrate for the no-carrier-added ^(94m)Tc production via ^(94)Mo(p,n)^(94m)Tc reaction

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Nuclear Science and Techniques 2009年第1期20卷 22-26页

作者： SADEGHI Mahdi KAKAVAND Tayeb AREF morteza SARABADANI Parvin Agricultural Medical & Industrial Research School Physics Department Zanjan University

94mTc was produced via natMo(p, xn)94mTc reaction. Deposition of MoO3 on Cu substrate was carried out via two special sedimentation methods for the production of 94mTc. The 533 mg of MoO3, 600 μL of collodium (nitrocellulose) and 3 mL of acetone were used to prepare a MoO3 layer of 11.69 cm2 and 45.81 mg·cm-2. Also, a MoO3 layer was prepared by 533 mg of MoO3, 71.188 mg of methylcellulose and 4 mL of water. The targets were checked by SEM and thermal shock test.

关键词：放射性核同位素 ^94mTc 原子核

Trasfugen:Traffic assignment of urban network by an approximation fuzzy genetic algorithm

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International Journal of Modeling, Simulation, and Scientific Computing 2018年第4期9卷 209-229页

作者： Mahdi Kherad Hamed Vahdat-Nejad morteza Araghi Department of Computer Engineering University of Birjand Avini Blvd Birjand 97175Iran Department of Civil Engineering University of Birjand Birjand 97175Iran

This paper proposes the Trasfugen method for traffic assignment aimed at solving the user equilibrium *** this end,the method makes use of a genetic algorithm.A fuzzy system is proposed for controlling the mutation and crossover rates of the genetic algorithm,and the corrective strategy is exploited for handling the equilibrium problem *** the model,an approximation algorithm is proposed for obtaining the paths between the origin–destination pairs in the demand *** the traditional deterministic algorithm that has exponential time complexity,this approximation algorithm has polynomial time complexity and is executed much ***,the Trasfugen method is applied to the urban network of Tehran metropolitan and the efficiency is *** comparing the results obtained from the proposed model with those obtained from the conventional traffic assignment method,namely,the Frank–Wolfe method;it is shown that the proposed algorithm,while acting worse during the initial iterations,achieves better results in the subsequent ***,it prevents the occurrence of local optimal points as well as early/premature convergence,thus producing better results than the Frank–Wolfe algorithm.

关键词： Traffic assignment equilibrium problem soft computing Tehran network.

Solar thermal simulation and applications in greenhouse

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Information Processing in Agriculture 2018年第1期5卷 83-113页

作者： morteza Taki Abbas Rohani Mostafa Rahmati-Joneidabad Department of Agricultural Machinery and Mechanization Ramin Agriculture and Natural Resources University of KhuzestanMollasaniIran Department of Biosystems Engineering Faculty of AgricultureFerdowsi University of MashhadIran Department of Horticultural Science Faculty of AgricultureRamin Agriculture and Natural Resources University of KhuzestanMollasaniIran

In this study,a comprehensive review focusing on key strategies of energy saving technologies based on simulation of heat and mass transfer and also artificial intelligent for climate controlling is *** the brief and concise assessment of existing greenhouse systems in terms of their role in total energy consumption;effective shape and structure,energy-efficient and new technologies are analyzed in detail for potential utilization in greenhouses for notable reductions in energy consumption and also go toward the *** technologies considered within the scope of this research are mainly renewable and sustainable based solutions such as photovoltaic(PV)modules,solar thermal(T)collectors,hybrid PV/T collectors and systems,phase change material(PCM)and underground based heat storage techniques,energy-efficient heat pumps,alternative facade materials for better thermal insulation and power *** findings from the research clearly reveal that up to 70%energy saving can be achieved through appropriate retrofit of conventional *** of solar greenhouses in Europe is more popular than *** some countries in Asia such as Iran,it is very restrict to invest on renewable projects because of cheap fossil *** it is recommended beside of investments by private investors,the Iranian government should also invest in the extension of solar energy in greenhouse by setting up a specialized agency or contracting *** should target the modeling and design the best shape of solar greenhouse for all agricultural areas to receive the maximum solar radiation and decrease the need of fossil fuels.

关键词： Agricultural greenhouse Sustainability Heat and mass transfer Modeling and simulation

Calculation and Simulation of Evapotranspiration of Applied Water

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Journal of Integrative Agriculture 2012年第3期11卷 489-501页

作者： Richard L Snyder Shu Geng morteza Orang Sara Sarreshteh Department of Land Air and Water Resources University of California Davis CA 95616 USA School of Environment and Energy Shenzhen Graduate School Peking University Shenzhen 518055 P.R.China Department of Plant Sciences University of California Davis CA 95616 USA California Department of Water Resources Division of Statewide Integrated Water Management Water Use and Efficiency SacramentoCA 94236 USA

The University of California, Davis and the California Department of Water Resources have developed a weather generator application program “SIMETAW” to simulate weather data from climatic records and to estimate reference evapotranspiration （ETo） and crop evapotranspiration （ETc） with the generated simulation data or with observed data. A database of default soil depth and water holding characteristics, effective crop rooting depths, and crop coefficient （Kc） values to convert ETo to ETc are input into the program. After calculating daily ETc, the input and derived data are used to determine effective rainfall and to generate hypothetical irrigation schedules to estimate the seasonal and annual evapotranspiration of applied water （ETaw）, where ETaw is the net amount of irrigation water needed to produce a crop. in this paper, we will discuss the simulation model and how it determines ETaw for use in water resources planning.

关键词： weather generator water balance crop water requirements water resource planning crop coefficient

On Some Properties of c-Frames

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Journal of Mathematical Research with Applications 2017年第4期37卷 466-476页

作者： morteza RAHMANI Young Researchers and Elite Club Ilkhchi Branch Islamic Azad University

In this paper we discuss about c-frames, namely continuous frames. Since, cframes are generalizations of discrete frames, we generalize some results of discrete frames to continuous version. We explain some results about relations of projections in Hilbert spaces and c-frames to characterize these frames. Also, we will specify(precisely) the synthesis and frame operators of Bochner integrable c-frames. Finally, we classify Hilbert-Schmidt operators by c-frames and express some new identities for Parseval c-frames.

关键词： Banach space Hilbert space frame c-frame Parseval c-frame Bochner measurable