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Modeling viscosity of methane,nitrogen,and hydrocarbon gas mixtures at ultra-high pressures and temperatures using group method of data handling and gene expression programming techniques

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Chinese Journal of Chemical Engineering 2021年第4期34卷 431-445页

作者： Farzaneh rezaei Saeed Jafari Abdolhossein hemmati-Sarapardeh Amir h.Mohammadi Department of Petroleum Engineering Shahid Bahonar University of KermanKermanIran Institute of research and Development Duy Tan UniversityDa Nang 550000Vietnam Faculty of Environment and Chemical Engineering Duy Tan UniversityDa Nang 550000Vietnam Institut de recherche en Genie Chimique et Petrolier(IrGCP) Paris CedexFrance Discipline of Chemical Engineering School of EngineeringUniversity of KwaZulu-NatalHoward College CampusKing George V AvenueDurban 4041South Africa

Accurate gas viscosity determination is an important issue in the oil and gas *** approaches for gas viscosity measurement are timeconsuming,expensive and hardly possible at high pressures and high temperatures(hPhT).In this study,a number of correlations were developed to estimate gas viscosity by the use of group method of data handling(GMDh)type neural network and gene expression programming(GEP)techniques using a large data set containing more than 3000 experimental data points for methane,nitrogen,and hydrocarbon gas *** is worth mentioning that unlike many of viscosity correlations,the proposed ones in this study could compute gas viscosity at pressures ranging between 34 and 172 MPa and temperatures between 310 and 1300 ***,a comparison was performed between the results of these established models and the results of ten wellknown models reported in the *** absolute relative errors of GMDh models were obtained 4.23%,0.64%,and 0.61%for hydrocarbon gas mixtures,methane,and nitrogen,*** addition,graphical analyses indicate that the GMDh can predict gas viscosity with higher accuracy than GEP at hPhT ***,using leverage technique,valid,suspected and outlier data points were ***,trends of gas viscosity models at different conditions were evaluated.

关键词： Gas Viscosity high pressure high temperature Group method of data handling Gene expression programming

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Evaluation of the Electroslag remelting Process in Medical Grade of 316LC Stainless Steel

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Journal of Materials Science & Technology 2009年第5期25卷 592-596页

作者： S.Ahmadi h.Arabi A.Shokuhfar A.rezaei Institute of Advanced Technologies for Metallic Materials Tarbiat Modares University Center of Excellence of Advanced Materials and Processing(CEAMP) Department of Metallurgy and Materials Science and EngineeringIran University of Science&Technology(IUST) Department of Material Science Faculty of Mechanical EngineeringK.N.Toosi University of Technology

This study is focused on the effects of electroslag remelting by prefused slag （CaO, Al2O3, and CaF2） on macrostructure and reduction of inclusions in the medical grade of 316LC （316LVM） stainless steel. Analysis of the obtained results indicated that for production of a uniform ingot structure during electroslag remelting, shape and depth of the molten pool should be carefully controlled. high melting rates led to deeper pool depth and interior radial solidification characteristics, while decrease in the melting rates caused more reduction of nonmetallic inclusions. Large shrinkage cavities formed during the conventional casting process in the primary ingots were found to be the cause of the fluctuation in the melting rate, pool depth and extension of equiaxed crystals zone.

关键词： Ultra clean steel Electroslag radial solidification remelting Prefused slag Vertical solidification

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Ni catalysts supported on nanocrystalline magnesium oxide for syngas production by CO_2 reforming of Ch_4

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Journal of Natural Gas Chemistry 2011年第2期20卷 198-203页

作者： Fereshteh Meshkani Mehran rezaei Catalyst and Advanced Materials research Laboratory Chemical Engineering Department Faculty of Engineering University of Kashan Institute of Nanoscience and Nanotechnology University of Kashan

CO2 reforming of methane （CDrM） was carried out over MgO supported Ni catalysts with various Ni loadings. The preparation of MgO supported Ni catalysts via surfactant-assisted precipitation method led to the formation of a nanocrystalline carrier for nickel catalysts. The synthesized samples were characterized by XrD, N2 adsorption-desorption, h2 chemisorption, TPr, TPO and SEM techniques. It was found that the high catalytic activity and stability of the prepared catalysts could be attributable to high dispersion of reduced Ni species and basicity of support surface. In addition, the effect of feed ratio, nickel loading and GhSV on the catalytic performance of CDrM over the catalysts were investigated.

关键词： nanocrystalline MgO nickel catalyst dry reforming syngas

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Theoretical Study of 13C Chemical Shifts Structures of Some ortho-Substituted 3-Anilino-2-nitrobenzo[b]thiophenes and 2-Anilino-3-nitrobenzo[b]thiophenes and Comparison with Experimental

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Chinese Journal of Chemistry 2011年第2期29卷 237-242页

作者： Mahdi rezaei Sameti Department of Physical Chemistry Faculty of Science Malayer University Malayer 65157 Iran

13C NMr chemical shifts have been calculated for structures of some substituted 3-anilino-2-nitrobenzo- [b]thiophenes （2o） and 2-anilino-3-nitrobenzo[b]thiophenes （3o） derivatives containing Oh, Nh2, OMe, Me, Et, h, F, Cl and Br. The molecular structures were fully optimized using B3LYP/6-31G（d,p）. The calculation of the 13C shielding tensors employed the GAUSSIAN 03 implementation of the gauge-including atomic orbital （GIAO） and continuous set of gauge transformations （CSGT） by using 6-311 ＋＋G（d,p） basis set at density functional levels of theories （DFT）. The isotropic and the anisotropy parameters of chemical shielding for all compounds are calculated. The predicted 13C chemical shifts are derived from equation δ=σ0＋σ where δ is the chemical shift, σ is the absolute shielding, and σ0 is the absolute shielding of the standard TMS. Excellent linear relationships have been observed between experimental and calculated 13C NMr chemical shifts for all derivatives.

关键词： DPT 13C NMr chemical shifts GIAO/CSGT

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A novel method for thermodynamic study on binding of copper ion with Alzheimer’s amyliod β peptide

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Chinese Science Bulletin 2009年第6期54卷 1037-1042页

作者： BEhBEhANI G. rezaei Chemistry Department Imam Khomeini International University

The interaction of Cu2+ with the first 16 residues of the Alzheimer's amyliod β peptide, Aβ (1-16), was studied by employing isothermal titration calorimetry at ph 7.2 and 37℃ in aqueous solution. The Gholamreza rezaei Behbehani (GrB) solvation model was used to reproduce the enthalpies of Cu2++ Aβ(1-16) interaction over the whole Cu2+ concentrations. The binding parameters recovered from the solvation model were attributed to the structural change of Aβ (1-16) due to the metal ion interaction. It was found that there is a set of two identical and non interacting binding sites for Cu2+ ions. The molar enthalpy of binding is Δh=27.895 kJ/mol. The association binding constants are 1.895 μM-1 and 1.891 μM-1 for the first and second binding sites respectively.

关键词：阿尔茨海默氏症铜离子热力学等温滴定量热法相互作用肽结合位点摩尔焓

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Gamma-ray shielding properties of concrete with different percentages of lead

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Nuclear Science and Techniques 2012年第4期23卷 215-218页

作者： D.rezaei-Ochbelagh S.Azimkhani h. Gasemzadeh Mosavinejad Department of Physics Faculty of Sciences University of Mohaghegh ArdabiliP.O.Box 179ArdebilIslamic Republic of Iran Department of Civil Engineering Engineering Faculty the University of GuilanRashtIslamic Republic of lran

In this work,concrete with different percentage leads was used to study gamma-ray shielding properties. The gamma-rays from ^(137)Cs and ^(60)Co sources were detected by Nal(Tl) detector and analyzed by multi-analyzer. Linear attenuation coefficients and compressive strength(kg/cm2) of concrete specimens were *** show that the concrete at the 90% weight ratio of lead to cement can be suitable for shielding gamma-ray.

关键词：混凝土试件屏蔽性能 γ-射线铅射线检测抗压强度分析仪探测器

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Benzene degradation in waste gas by photolysis and photolysis-ozonation： experiments and modeling

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Frontiers of Environmental Science & Engineering 2016年第6期10卷 103-112页

作者： Fariba Mahmoudkhani Maryam rezaei Vahid Asili Mahsasadat Atyabi Elena Vaisman Cooper h. Langford Alex De Visscher Department of Chemical and Petroleum Engineering Centre for Environmental Engineering Research and Education (CEERE) Schulich School of Engineering University of Calgary 2500 University Drive NW Calgary Alberta T2N 1N4 Canada Department of Chemistry Faculty of Science University of Calgary 2500 University Drive NW Calgary Alberta T2N 1N4 Canada Present address: Institute for resources Environment and Sustainability University of British Columbia 2202 Main Hall Vancourer BC V6T 1Z4 Canada

The degradation of benzene, a carcinogenic air pollutant, was studied in a gas-phase photochemical reactor with an amalgam lamp emitting ultraviolet light at 185 and 254 nm. Efficient benzene degradation （〉70%） was possible for benzene mass flow rates of up to 1.5 ***1. Adding ozone allowed benzene mass flow rates of up to 5 m ***-1 tobe treated with the same efficiency. In terms of energy consumption, ozone doubles the efficiency of the process. A comprenenslve mecnanisnc simulation model was developed incorporating a chemical kinetics model （62 reactions involving 47 chemical species）, a material balance model incorporating diffusion and flow, a flow velocity model,and a light field model. The model successfully predicted the efficiency of the reactor, generally within 20%, which indicates that the model is sound, and can be used for feasibility studies. The prediction of the reactor efficiency in the presence of ozone was less successful, with systematically overestimated efficiency. Condensation of reaction products in the reactor is thought to be the mare cause of model inaccuracy. Both experimental .data and model predictions show that there is a synergistic effect between ozonation and ultraviolet degradation.

关键词： Photolysis OzoneBenzene Waste gas Simulation Synergism

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CO_2 reforming of methane over nickel catalysts supported on nanocrystalline MgAl_2O_4 with high surface area

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Journal of Natural Gas Chemistry 2012年第2期21卷 200-206页

作者： Narges hadian Mehran rezaei Zeinab Mosayebi Fereshteh Meshkani Institute of Nanoscience and Nanotechnology University of Kashan Catalyst and Advanced Materials research Laboratory Chemical Engineering Department Faculty of Engineering University of Kashan

In this paper dry reforming of methane （DrM） was carried out over nanocrystalline MgAl2O4-supported Ni catalysts with various Ni loadings. Nanocrystalline MgAl2O4 spinel with high specific surface area was synthesized by a co-precipitation method with the addition of pluronic P123 triblock copolymer as surfactant, and employed as catalyst support. The prepared samples were characterized by X-ray diffraction （XrD）, N2 adsorption, h2 chemisorption, temperature-programmed reduction （TPr）, temperature-programmed oxidation （TPO）, temperature- programmed desorption （TPD） and transmission and scanning electron microscopies （TEM, SEM） techniques. The obtained results showed that the catalyst support has a nanocrystalline structure （crystal size： about 5 nm） with a high specific surface area （175 m2 g-1） and a mesoporous structure. Increasing in nickel content decreased the specific surface area and nickel dispersion. The prepared catalysts showed high catalytic activity and stability during the reaction. SEM analysis revealed that whisker type carbon deposited over the spent catalysts and increasing in nickel loading increased the amount of deposited carbon. The nickel catalyst with 7 wt% of nickel showed the highest catalytic activity.

关键词： dry reforming nickel catalysts magnesium aluminate

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Energy supply for water electrolysis systems using wind and solar energy to produce hydrogen: a case study of Iran

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Frontiers in Energy 2019年第3期13卷 539-550页

作者： Mostafa rezaei Ali MOSTAFAEIPOUr Mojtaba QOLIPOUr Mozhgan MOMENI Industrial Engineering Department Yazd UniversityYazd ***Iran

Due to acute problems caused by fossil fuels that threaten the environment, conducting research on other types of energy carriers that are clean and renewable is of great importance. Since in the past few years hydrogen has been introduced as the future fuel, the aim of this study is to evaluate wind and solar energy potentials in prone areas of Iran by the Weibull distribution function (WDF) and the Angstrom-Prescott (AP) equation for hydrogen production. To this end, the meteorological data of solar radiation and wind speed recorded at 10 m height in the time interval of 3 h in a five-year period have been used. The findings indicate that Manjil and Zahedan with yearly wind and solar energy densities of 6004 (kWh/m2) and 2247 0cWh/m2), respectively, have the greatest amount of energy among the other cities. After examining three different types of commercial wind turbines and photovoltaic (PV) systems, it becomes clear that by utilizing one set of Gamesa G47 turbine, 91 kg/d of hydrogen, which provides energy for 91 car/week, can be produced in Manjil and will save about 1347 L of gasoline in the week. Besides, by installing one thousand sets of X21-345 PV systems in Zahedan, 20 kg/d of hydrogen, enough for 20 cars per week, can be generated and 296 L of gasoline can be saved. Finally, the rETScreen software is used to calculate the annual CO2 emission reduction after replacing gasoline with the produced hydrogen.

关键词： wind energy solar energy water electrolysis hydrogen production Weibull distribution function (WDF) Angstrom丒Prescott (AP) equation

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Dietary supplementation with branchedchain amino acids enhances milk production by lactating sows and the growth of suckling piglets

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Journal of Animal Science and Biotechnology 2022年第6期13卷 1857-1870页

作者： reza rezaei Ana San Gabriel Guoyao Wu Department of Animal Science Texas A&M UniversityCollege StationTX 77843USA Ajinomoto Co. Inc1-15-1 KyobashiChuokuTokyo 104-8315Japan

Background:Under current dietary regimens,milk production by lactating sows is insufficient to sustain the maximal growth of their *** precursors of glutamate and glutamine as well as substrates and activators of protein synthesis,branched-chain amino acids(BCAAs)have great potential for enhancing milk production by ***:Thirty multiparous sows were assigned randomly into one of three groups:control(a corn-and soybean meal-based diet),the basal diet+1.535%BCAAs;and the basal diet+3.07%*** ratio(g/g)among the supplemental L-isoleucine,L-leucine and L-valine was 1.00:2.56:*** were made isonitrogenous by the addition of appropriate amounts of *** sows had free access to drinking water and their respective *** number of live-born piglets was standardized to 9 per sow at d 0 of lactation(the day of parturition).On d 3,15 and 29 of lactation,body weights and milk consumption of piglets were measured,and blood samples were obtained from sows and piglets 2 h and 1 h after feeding and nursing,***:Feed intake did not differ among the three groups of *** of asparagine,glutamate,glutamine,citrulline,arginine,proline,BCAAs,and many other amino acids were greater(Phe plasma of BCAA-supplemented sows and their piglets than those in the control *** with the control,dietary supplementation with 1.535%and 3.07%BCAAs increased(Prations of free and protein-bound BCAAs,glutamate plus glutamine,aspartate plus asparagine,and many other amino acids in milk;milk production by 14%and 21%,respectively;daily weight gains of piglets by 19%and 28%,respectively,while reducing preweaning mortality rates by 50%and 70%,***:Dietary supplementation with up to 3.07%BCAAs enhanced milk production by lactating sows,and the growth and survival of their piglets.

关键词： Branched-chain amino acids Lactation Milk synthesis Milk yield Neonatal growth Sow

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