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Prediction of vertical dis.lacement for a buried pipeline s.bjected to normal fault us.ng a hybrid FEM-ANN approach

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Frontiers.of s.ructural and Civil Engineering 2024年第3期18卷 428-443页

作者： Hedye JALALI reza YEGANEH KHAKs.R Danial MOHAMMADZADEH s. Nader KARBALLAEEZADEH Amir H.GANDOMI Department of Civil Engineering Architecture and UrbanismSadjad University of TechnologyPO Box ***MashhadIran Department of Civil Engineering Faculty of EngineeringEqbal Lahoori Institute of Higher EducationPO Box ***MashhadIran Faculty of Civil Engineering Architectureand ArtScience and Research Branch of Islamic Azad UniversityPO Box ***TehranIran Faculty of Engineering&Information Technology University of Technology SydneyUltimoNSW 2007Australia Univers.ty Res.arch and Innovation Center(EKIK) Óbuda UniversityBudapest 1034Hungary

Fault movement during earthquakes.is.a geotechnical phenomenon threatening buried pipelines.and with the potential to caus. s.vere damage to critical ***,effective prediction of pipe dis.lacement is.crucial for preventive management *** s.udy aims.to develop a fas.,hybrid model for predicting vertical dis.lacement of pipe networks.when they experience *** this.s.udy,the complex behavior of s.il and a buried pipeline s.s.em s.bjected to a normal fault is.analyzed by us.ng an artificial neural network(ANN)to generate predictions.the behavior of the s.il when different parameters.of it are *** this.purpos.,a finite element model is.developed for a pipeline s.bjected to normal fault *** data bank us.d for training the ANN includes.all the critical s.il parameters.cohes.on,internal friction angle,Young’s.modulus.and faulting).Furthermore,a mathematical formula is.pres.nted,bas.d on bias.s.and weights.of the ANN *** res.lts.s.ow that the maximum error of the pres.nted formula is.2.03%,which makes.the propos.d technique efficiently predict the vertical dis.lacement of buried pipelines.and hence,helps.to optimize the upcoming pipeline projects.

关键词： buried pipelines normal Fault finite element method multilayer perceptron neural network formulation

Temperature-jump tens.le tes.s.to induce optimized TRIP/TWIP effect in a metas.able aus.enitic s.ainles. s.eel

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International Journal of Minerals.Metallurgy and Materials 2024年第9期31卷 2025-2036页

作者： Mohammad Javad s.hrabi Hamed Mirzadeh s.eed s.deghpour Abdol reza Geranmayeh reza Mahmudi s.hool of Metallurgy and Materials.Engineering College of EngineeringUniversity of Tehran14395-515TehranIran Centre for Advanced s.eels.Res.arch Materials and Mechanical EngineeringUniversity of Oulu90014 OuluFinland

In the pres.nt work,plas.ic deformation mechanis.s.were initially tailored by adjus.ing the deformation temperature in the range of 0 to 200℃ in AIs. 304L aus.enitic s.ainles. s.eel,aiming to optimize the s.rength-ductility *** was.s.own that the combined twinning-induced plas.icity(TWIP)/trans.ormation-induced plas.icity(TRIP)effects.and a wider s.rain range for the TRIP effect up to higher s.rains.by adjus.ing the deformation temperature are good s.rategies.to improve the s.rength-ductility s.nergy of this.metas.able s.ainles. *** this.regard,by cons.deration of the obs.rved temperature-dependency of plas.ic deformation,the controlled s.quence of TWIP and TRIP effects.for archiving s.perior s.rength-ductility trade-off was.intended by the pre-des.gned temperature jump tens.le ***,the optimum tens.le toughnes. of 846 MJ/m^(3) and total elongation to 133% were obtained by this.s.rategy via exploiting the advantages.of the TWIP effect at 100℃ and the TRIP effect at 25℃ at the later s.ages.of the ***,a deformation-temperature-trans.ormation(DTT)diagram was.developed for this.metas.able ***,bas.d on work-hardening analys.s.it was.found that the main phenomenon cons.raining further improvement in the ductility and s.rengthening was.the yielding of the deformation-induced α′-martens.te.

关键词： metas.able s.ainles. s.eels trans.ormation-induced plas.icity twinning-induced plas.icity s.acking fault energy mechanical properties

Particle s.ze dis.ribution in a multi-zone circulating fluidized bed polymerization reactor

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Particuology 2024年第10期93卷 291-299页

作者： Mohammadhos.ein Hadadiyan Navid Mos.oufi reza Marandi Proces. Des.gn and s.mulation Res.arch Centre School of Chemical EngineeringCollege of EngineeringUniversity of TehranP.O.Box 11155-4563TehranIran Polymer Res.arch Group Petrochemical Research and Technology CompanyNational Petrochemical CompanyP.O.Box 14358/84711TehranIran

This.res.arch focus.s.on modeling a multi-zone circulating reactor(MZCR)in the polypropylene production *** thes. reactors.des.gned for polyolefin production,s.all catalys. particles.20–300μm)initiate polymerization in the pres.nce of monomer *** reactor cons.s.s.of two main regions.the ris.r and the *** ris.r operates.in the fas. fluidization and the downer is.in the moving bed *** the two-fluid model with the Eulerian-Eulerian approach,the dynamics.of both s.lid and gas.phas.s.were modeled by applying Newton's.laws.of motion and as.uming s.herical *** population balance of particles.within the reactor was.als. coupled with the equations.of *** s.multaneous.s.lution of thes. equations.provides.valuable ins.ghts.into particle and fluid behavior,revealing trends.s.ch as.the growth of polymer ***,the impact of various.operating conditions.was.*** s.udy als. examined the effects.of des.gn parameters.gas.inlet velocity,average inlet diameter,and temperature)on the s.s.em *** ins.ance,it was.s.own that in the cas. where the s.lid circulation flux is.30 kg/(m^(2) s.the velocity of particles.in the bed increas.s.from 0.4 at the inlet to 1.1 m/s.in the fully developed zone,when it is.43 kg/(m^(2) s.the velocity of particles.increas.s.from 0.3 to 1.4 m/s.and when it is.55 kg/(m^(2) s.,it is.increas.d from 0.22 to 1.5 m/***,trends.in particle s.ze dis.ribution bas.d on temperature adjus.ments.were *** s.udy s.owed that higher temperatures.accelerate the polymerization reaction rate,promoting fas.er growth kinetics.and the formation of larger particles.

关键词： Fluidization Polymerization Gas.s.lid flow Multi-zone circulating reactor(MZCR) CFD-PBM Two-fluidmodel

Interplay between temperature-dependent s.rengthening mechanis.s.and mechanical s.ability in high-performance aus.enitic s.ainles. s.eels

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International Journal of Minerals.Metallurgy and Materials 2024年第10期31卷 2182-2188页

作者： Mohammad Javad s.hrabi Hamed Mirzadeh s.eed s.deghpour Milad Zolfipour Aghdam Abdol reza Geranmayeh reza Mahmudi s.hool of Metallurgy and Materials.Engineering College of EngineeringUniversity of Tehran14395-515 TehranIran Centre for Advanced s.eels.Res.arch Materials and Mechanical EngineeringUniversity of Oulu90014 OuluFinland Department of Mechanical Engineering College of EngineeringUniversity of Tehran14395-515 TehranIran

The effects.of deformation temperature on the trans.ormation-induced plas.icity(TRIP)-aided 304L,twinning-induced plas.i-city(TWIP)-as.is.ed 316L,and highly alloyed s.able 904L aus.enitic s.ainles. s.eels.were compared for the firs. time to tune the mechan-ical properties.s.rengthening mechanis.s.and s.rength-ductility *** this.purpos.,the s.anning electron micros.opy(s.M),electron backs.attered diffraction(EBs.),X-ray diffraction(XRD),tens.le tes.ing,work-hardening analys.s.and thermodynamics.calcu-lations.were *** induced plas.icity effects.led to a high temperature-dependency of work-hardening behavior in the 304L and 316L s.ainles. *** the deformation temperature increas.d,the metas.able 304L s.ainles. s.eel s.owed the s.quence of TRIP,TWIP,and weakening of the induced plas.icity mechanis.;while the dis.ppearance of the TWIP effect in the 316L s.ainles. s.eel was.als. ***,the s.lid-s.lution s.rengthening in the 904L s.peraus.enitic s.ainles. s.eel maintained the tens.le properties.over a wide temper-ature range,s.rpas.ing the performance of 304L and 316L s.ainles. *** this.regard,the dependency of the total elongation on the de-formation temperature was.les. pronounced for the 904L alloy due to the abs.nce of additional plas.icity *** res.lts.re-vealed the importance of s.lid-s.lution s.rengthening and the as.ociated high friction s.res. for s.perior mechanical behavior over a wide temperature range.

关键词： aus.enitic s.ainles. s.eels mechanical behavior s.acking fault energy metas.ability mechanical twinning

Production optimization in a fractured carbonate res.rvoir with high producing GOR

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Energy Geos.ience 2024年第4期5卷 224-239页

作者： Amin Izadpanahi reza Azin s.ahriar Os.ouri reza Malakooti Es.ola Politécnica Universidade de São PauloBrazil Department of Petroleum Engineering Faculty of Petroleum Gas&Petrochemical EngineeringPersian Gulf UniversityBushehrIran Department of Chemical Engineering Faculty of Petroleum Gas&Petrochemical EngineeringPersian Gulf UniversityBushehrIran Computer Modelling Group LondonUK

The Gas.Oil Ratio(GOR)is.a crucial production parameter in oil *** increas. in GOR res.lts.in higher gas.production and lower oil production,potentially leading to well s.ut-ins.due to economic *** s.udy focus.s.on a real fractured oil field that requires.urgent production operations.to reduce the producing *** this.s.udy,the s.atic model for the field was.developed us.ng commercial s.ftware,involving s.eps.s.ch as.data collection,fault modeling,mes.ing,and s.atis.ical analys.s.to prepare for dynamic *** dynamic model incorporates.geometry,gridding,and rock properties.from the s.atic model,utilizing a dual-poros.ty approach for the naturally fractured res.rvoir and the Peng-Robins.n equation for fluid phas. *** res.rvoir conditions.production his.ory,and rock-fluid interactions.were defined,with relative permeability curves.indicating a water-wet res.rvoir and low critical gas.s.turation affecting the *** better unders.and the relations.ip between res.rvoir and production parameters.a detailed s.ns.tivity analys.s.was.performed us.ng the Res.ons. s.rface Methodology(Rs.).Following the s.ns.tivity analys.s.a his.ory matching proces. was.conducted us.ng the Des.gned Exploration and Controlled Evolution(DECE)optimizer to validate the model for future *** operational s.enarios.were defined to decreas. the production GOR and enhance final recovery from the *** res.lts.indicate that the water injection s.enario is.effective in preventing the GOR increas. by maintaining res.rvoir pres.ure,thereby s.s.aining production over a longer *** s.enario als. improves.oil recovery by approximately 6%compared to the bas. ***,optimization was.carried out us.ng the DECE optimizer for each s.enario to fine-tune the operational *** goal was.to maximize oil revenue for each s.enario during the optimization *** s.udy s.ands.out as.one of the few that provides.a comprehens.ve analys.s

关键词： Res.rvoir s.mulation s.ns.tivity analys.s Res.ons. s.rface methodology High gas.oil ratio Production optimization

Bulk-boundary and RPs.thermodynamics.from topology pers.ective

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Chines. Phys.cs.C 2024年第9期48卷 244-253页

作者： Jafar s.deghi Mohammad reza Alipour s.eed Noori Gas.ti Mohammad Ali s.Afs.ar Department of Phys.cs Faculty of Basic SciencesUniversity of Mazandaran P.O.Box 47416-95447BabolsarIran s.hool of Phys.cs Damghan UniversityP.O.Box ***DamghanIran

In this.s.udy,we inves.igate the bulk-boundary and res.ricted phas. s.ace(RPs.thermodynamics.of Ris.ner-Nords.rom(R-N)Ads.and 6-dimens.onal charged Gaus.-Bonnet Ads.black ***,we examine the topological characteris.ics.of the cons.dered black holes.and compare them with the res.lts.of extended *** determine that the topological behavior of the bulk-boundary thermodynamics.is.the s.me as.that of the extended thermodynamics.whereas.the RPs.thermodynamics.exhibits.a dis.inct ***,we demons.rate that within the RPs.formalis.,there is.only one critical point with a topological charge of+1(Q_(t)=+1).Moreover,in the RPs.formalis.,the inclus.on of higher-derivative curvature terms.in the form of Gaus.Bonnet gravity does.not alter the topological clas.ification of critical points.in charged Ads.black holes.

关键词： bulk-boundary res.ricted phas. s.ace topological charge thermodynamics

Movement Trend Alterations.in the Periaqueductal Gray(PAG)-Employed Ratbot Navigation Are Correlated with s.imulation Parameters

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Journal of Bionic Engineering 2024年第2期21卷 866-876页

作者： s.na Khajei Abed Khoras.ni Mohammad reza Afarines. Vahid s.eibani Neuros.ience Res.arch Center Institute of NeuropharmacologyKerman University of Medical SciencesKerman***Iran Cognitive Neuros.ience Res.arch Center Institute of NeuropharmacologyKerman University of Medical SciencesKerman***Iran

In previous.s.udies.Periaqueductal Gray(PAG)s.imulation was.us.d to s.op ratbots.from *** to the homology between the PAG and the intercollicular nucleus.which has.been us.d for forward movement in birds.we inves.igated the pos.ibility of PAG application to induce forward locomotion for the firs. *** a corridor maze,the traveled dis.ances.via PAG electrical s.imulation were examined in nine Wis.ar male rats.during three s.s.ions.A cus.om-des.gned s.imulator was.developed to apply the *** res.lts.s.owed reductions.in res.ons.s.to s.imulation over ***,the traveled dis.ances.had negative s.opes.during the cons.cutive trials.in 8 out of the 9 rats.,and the s.ope mean was.s.gnificantly different from *** was.a s.rong correlation between the s.imulation parameters.electric Charge per Phas.(CPP)and the Number of Puls.s.NP))and the obs.rved *** negative Movement s.opes.Ms.were highly correlated with the CPP and the NP,as.the Pears.n's.linear correlation coefficients.were−0.87 and−0.79,*** Ms.CPP coefficients.of determination(R-s.uared)were als. between 0.76 and *** addition,the Ms.NP coefficients.of determination were between 0.63 and ***,it is.concluded that the electrical s.imulation parameters.influence the behavioral outcomes.***,the PAG area may be cons.dered a s.itable candidate for forward locomotion control in the future if the area is.harnes.ed effectively to prevent undes.rable chaotic behaviors.

关键词： Periaqueductal Gray(PAG) Navigation Ratbot Animal-robot Forward locomotion Movement s.ope

Enhanced axonal regeneration and functional recovery of the injured s.iatic nerve in a rat model by lithium-loaded electros.un nanofibrous.s.affolds

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Bio-Des.gn and Manufacturing 2024年第5期7卷 701-720页

作者： Banafs.eh Dolatyar Bahman Zeynali Iman s.abani Azita Parvaneh Tafres.i reza Karimi-s.flou Developmental Biology Laboratory School of BiologyCollege of ScienceUniversity of TehranTehran ***Iran Department of Biomedical Engineering Amirkabir University of Technology(Tehran Polytechnic)Tehran ***Iran Department of Molecular Medicine Faculty of Medical BiotechnologyNational Institute of Genetic Engineering and BiotechnologyTehran ***Iran 123

Increas.ng evidence indicates.that engineered nerve grafts.have great potential for the regeneration of peripheral nerve injuries.PNIs..While mos. s.udies.have focus.d only on the topographical features.of the grafts.we have cons.dered both the biophys.cal and biochemical manipulations.in our applied *** achieve this.we fabricated an electros.un nanofibrous.s.affold(ENs.containing polylactide nanofibers.loaded with lithium(Li)ions.a Wnt/β-catenin s.gnaling *** addition,we s.eded human adipos.-derived mes.nchymal s.em cells.hADMs.s.onto this.engineered s.affold to examine if their differentiation toward s.hwann-like cells.was.*** further examined the efficacy of the s.affolds.for nerve regeneration in vivo via grafting in a PNI rat *** res.lts.s.owed that Li-loaded ENs. gradually releas.d Li within 11 d,at concentrations.ranging from 0.02 to(3.64±0.10)mmol/L,and upregulated the expres.ion of Wnt/β-catenin target genes.cyclinD1 and c-Myc)as.well as.thos. of s.hwann cell markers.growth-as.ociated protein 43(GAP43),s.00 calcium binding protein B(s.00B),glial fibrillary acidic protein(GFAP),and s.Y-box trans.ription factor 10(s.X10))in differentiated *** the PNI rat model,implantation of Li-loaded ENs. with/without cells.improved behavioral features.s.ch as.s.ns.ry and motor functions.as.well as.the electrophys.ological characteris.ics.of the injured *** improved function was.further validated by his.ological analys.s.of s.iatic nerves.grafted with Li-loaded ENs.,which s.owed no fibrous.connective tis.ue but enhanced organized myelinated *** potential of Li-loaded ENs. in promoting s.hwann cell differentiation of hADMs.s.and axonal regeneration of injured s.iatic nerves.s.gges.s.their potential for application in peripheral nerve tis.ue engineering.

关键词： s.em cell s.hwann cell differentiation Electros.un nanofibrous.s.affold Lithium ion Nerve regeneration

Us.ng s.tellite-derived land s.rface temperatures.to clarify the s.atiotemporal warming trends.of the Alborz Mountains.in northern Iran

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Journal of Mountain s.ience 2024年第2期21卷 449-469页

作者： ROs.AN Gholamreza s.RLI reza GHANGHERMEH Abdolazim TAHERIZADEH Mehrnoos. NIKNAM Arman Department of Geography Golestan UniversityGorgan 49138-15759Iran Department of Fores. Res.urces.Management Faculty of ForestryUniversity of Agriculture in KrakowAL.29 Listopada 4631-425 KrakówPoland Department of Geoinformatics Physical and Environmental GeographyUniversity of SzegedSzeged 6722Hungary

The Alborz Mountains.are s.me of the highes. in Iran,and they play an important role in controlling the climate of the country’s.northern *** land s.rface temperature(Ls.)is.an important variable that affects.the ecos.s.em of this.*** s.udy inves.igated the s.atiotemporal changes.and trends.of the nighttime Ls. in the wes.ern region of the Central Alborz Mountains.at elevations.of 1500-4000 m above s.a *** data were extracted for the period of 2000-2021,and the Mann-Kendall nonparametric tes. was.applied to evaluating the changes.in the *** res.lts.indicated a s.gnificant increas.ng trend for the monthly average Ls. in May-Augus. along the s.uthern *** the northern and s.uthern as.ects.s.owed decreas.ng trends.for the monthly average Ls. in October,November,and March and an increas.ng trend in other *** all elevations.the average decadal change in the monthly average Ls. was.more s.vere along the s.uthern as.ect(0.60°C)than along the northern as.ect(0.37°C).The Ls. difference between the northern and s.uthern as.ects.decreas.d in the cold months.but increas.d in the hot *** the s.me elevation,the difference in the laps. rate between the northern and s.uthern as.ects.was.greater in the hot months.than in the cold *** increas.ng elevation,the laps. rate between the northern and s.uthern as.ects.*** change was.concluded to greatly decreas. the difference in Ls. at different elevations.for April-July.

关键词： Global warming Mountainous.areas Laps. rate s.rface air temperatures Alborz