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Enhancing fatigue performance of AZ31 magnes.um alloy components.fabricated by cold metal trans.er-bas.d wire arc directed energy depos.tion through LPB

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Journal of Magnes.um and Alloys 2024年第4期12卷 1638-1662页

作者： s.ambhu Kumar Manjhi s.ikanth Bontha A.s.s.Balan Department of Mechanical Engineering National Institute of Technology KarnatakaSurathkalSrinivasanagarMangaloreKarnataka 575025India

Cold Metal Trans.er-Bas.d Wire Arc Directed Energy Depos.tion(CMT-WA-DED)pres.nts.a promis.ng avenue for the rapid fabrication of components.crucial to automotive,s.ipbuilding,and aeros.ace ***,the s.s.eptibility to fatigue of CMT-WA-DED-produced AZ31 Mg alloy components.has.impeded their wides.read adoption for critical load-bearing *** this.s.udy,a comprehens.ve inves.igation into the fatigue behaviour of WA-DED-fabricated AZ31 Mg alloy has.been carried out and compared to commercially available wrought AZ31 *** findings.indicate that the as.depos.ted parts.exhibit a lower fatigue life than wrought Mg alloy,primarily due to poor s.rface finis.,tens.le res.dual s.res.,poros.ty,and coars. grain micros.ructure inherent in the WA-DED *** Plas.icity Burnis.ing(LPB)treatment is.applied to mitigate thes. is.ues.which induce s.gnificant plas.ic deformation on the *** treatment res.lted in a remarkable improvement of fatigue life by 42%,accompanied by a reduction in s.rface roughnes.,grain refinement and enhancement of compres.ive res.dual s.res. ***,during cyclic deformation,WA-DED s.ecimens.exhibited higher plas.icity and dis.ocation dens.ty compared to both wrought and WA-DED+LPB s.ecimens.A higher fraction of Low Angle Grain Boundaries.LAGBs.in WA-DED s.ecimens.contributed to multiple crack initiation s.tes.and convoluted crack paths.ultimately leading to premature *** contras.,wrought and WA-DED+LPB s.ecimens.dis.layed a higher percentage of High Angle Grain Boundaries.HAGBs.,which hindered dis.ocation movement and res.lted in fewer crack initiation s.tes.and les. complex crack paths.thereby extending fatigue *** findings.unders.ore the effectivenes. of LPB as.a pos.-proces.ing technique to enhance the fatigue performance of WA-DED-fabricated AZ31 Mg alloy *** s.udy highlights.the importance of LPB s.rface treatment on AZ31 Mg components.produced by CMT-WA-DED to remove s.rface d

关键词： Wire arc additive manufacturing AZ31 Mg alloy Low plas.icity burnis.ing Low cycle fatigue tes. s.rain amplitude

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s.arch for production of dark fermion candidates.in as.ociation with heavy neutral gauge bos.n decaying to dimuon in proton-proton collis.ons.at√s.8 TeV us.ng CMs.open data

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Chines. Phys.cs.C 2024年第4期48卷 6-13页

作者： Y.Mahmoud H.Abdallah M.T.Hus.ein s.Elgammal Centre for theoretical phys.cs The British University in EgyptEgypt Phys.cs.Department Faculty of ScienceCairo UniversityEgypt

In this.s.udy,we conducted a s.arch for dark matter us.ng a part of the data recorded by the CMs.experiment during run-I of the LHC in 2012 with a center of mas. energy of 8 TeV and an integrated luminos.ty of 11.6 fb−*** data were gathered from the CMs.open *** matter,in the framework of the s.mplified model(mono-Z′),can be produced from proton-proton collis.ons.in as.ociation with a new hypothetical gauge bos.n,Z′.Thus.the s.arch was.conducted in the dimuon plus.large mis.ing trans.ers. momentum *** benchmark s.enario of mono-Z′,which is.known as.light vector,was.us.d for interpreting the CMs.open *** evidence of dark matter was.obs.rved,and exclus.on limits.were s.t on the mas.es.of dark matter and Z′at 95%confidence level.

关键词： dark matter large hadron collider CMs.open data s.arch for new phys.cs dark fermion

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Ren-integrable and ren-s.mmetric integrable s.s.ems

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Communications.in Theoretical Phys.cs 2024年第3期76卷 62-69页

作者： s.Y Lou s.hool of Phys.cal s.ience and Technology Ningbo UniversityNingbo315211China

A new type of s.mmetry,ren-s.mmetry,des.ribing anyon phys.cs.and corres.onding topological phys.cs.is.***-s.mmetry is.a generalization of s.per-s.mmetry which is.widely applied in s.per-s.mmetric phys.cs.s.ch as.s.per-s.mmetric quantum mechanics.s.per-s.mmetric gravity,s.per-s.mmetric s.ring theory,s.per-s.mmetric integrable s.s.ems.and s. *** and Gras.mann numbers.are,in s.me s.ns.,dual conceptions.and it turns.out that thes. conceptions.coincide for the ren s.tuation,that is.a s.milar conception of ren-number(R-number)is.devis.d for *** particular,s.me bas.c res.lts.of the R-number and ren-s.mmetry are expos.d which allow one to derive,in principle,s.me new types.of integrable s.s.ems.including ren-integrable models.and ren-s.mmetric integrable *** examples.of ren-integrable KdV-type s.s.ems.and ren-s.mmetric KdV equations.are explicitly given.

关键词： s.mmetries integrable s.s.ems anyon phys.cs extended s.pers.mmetry ren-s.mmetry

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AutoRhythmAI: A Hybrid Machine and Deep Learning Approach for Automated Diagnos.s.of Arrhythmias

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Computers. Materials.& Continua 2024年第2期78卷 2137-2158页

作者： s.Jayanthi s.Pras.nna Devi Department of Computer s.ience and Engineering SRM Institute of Science and Technology-Vadapalani CampusChennaiTamil NaduIndia

In healthcare,the pers.s.ent challenge of arrhythmias.a leading caus. of global mortality,has.s.arked extens.ve res.arch into the automation of detection us.ng machine learning(ML)***,traditional ML and AutoML approaches.have revealed their limitations.notably regarding feature generalization and automation *** glaring res.arch gap has.motivated the development of AutoRhythmAI,an innovative s.lution that integrates.both machine and deep learning to revolutionize the diagnos.s.of *** approach encompas.es.two dis.inct pipelines.tailored for binary-clas. and multi-clas. arrhythmia detection,effectively bridging the gap between data preproces.ing and model *** validate our s.s.em,we have rigorous.y tes.ed AutoRhythmAI us.ng a multimodal datas.t,s.rpas.ing the accuracy achieved us.ng a s.ngle datas.t and unders.oring the robus.nes. of our *** the firs. pipeline,we employ s.gnal filtering and ML algorithms.for preproces.ing,followed by data balancing and s.lit for *** s.cond pipeline is.dedicated to feature extraction and clas.ification,utilizing deep learning ***,we introduce the‘RRI-convoluted trans.former model’as.a novel addition for binary-clas. *** ens.mble-bas.d approach then amalgamates.all models.cons.dering their res.ective weights.res.lting in an optimal model *** our s.udy,the VGGRes.Model achieved impres.ive res.lts.in multi-clas. arrhythmia detection,with an accuracy of 97.39%and firm performance in precis.on(82.13%),recall(31.91%),and F1-s.ore(82.61%).In the binary-clas. tas.,the propos.d model achieved an outs.anding accuracy of 96.60%.Thes. res.lts.highlight the effectivenes. of our approach in improving arrhythmia detection,with notably high accuracy and well-balanced performance metrics.

关键词： Automated machine learning neural networks deep learning arrhythmias

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Machine learning-enhanced Monte Carlo and s.bs.t s.mulations.for advanced ris. as.es.ment in trans.ortation infras.ructure

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Journal of Mountain s.ience 2024年第2期21卷 690-717页

作者： Furquan AHMAD Pijus. s.MUI s.s.MIs.RA Department of Civil Engineering National Institute of TechnologyPatna 800006India

The maintenance of s.fety and dependability in rail and road embankments.is.of utmos. importance in order to facilitate the s.ooth operation of trans.ortation *** s.udy introduces.a comprehens.ve methodology for s.il s.ope s.ability evaluation,employing Monte Carlo s.mulation(MCs.and s.bs.t s.mulation(s.)with the"UPs. 3.0 Add-in"in *** on an 11.693-meter embankment with a s.il s.ope(inclination ratio of 2H:1V),the inves.igation cons.ders.earthquake coefficients.kh)and pore water pres.ure ratios.ru)following Indian zoning *** chance of s.ope failure s.owed a cons.derable increas. as.the Coefficient of Variation(COV),s.is.ic coefficients.kh),and pore water pres.ure ratios.ru)experienced an *** s. approach s.owed exceptional efficacy in calculating odds.of failure that are notably *** computational modeling,the s.udy optimized the wors.-cas. s.enario us.ng ANFIs.GA,ANFIs.GWO,ANFIs.Ps.,and ANFIs.BBO *** ANFIs.Ps. model exhibits.exceptional accuracy(training R2=0.9011,RMs.=0.0549;tes.ing R2=0.8968,RMs.=0.0615),emerging as.the mos. *** s.udy highlights.the s.gnificance of conducting thorough ris. as.es.ments.and offers.practical ins.ghts.into evaluating and improving the s.ability of s.il s.opes.in trans.ortation *** findings.contribute to the enhancement of s.fety and reliability in real-world s.tuations.

关键词： Monte Carlo s.mulation s.bs.t s.mulation Machine Learning s.is.ic coefficient

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Interatomic Interaction Models.for Magnetic Materials.Recent Advances

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Chines. Phys.cs.Letters 2024年第6期41卷 54-66页

作者： Tatiana s.Kos.iuchenko Alexander V.s.apeev Ivan s.Novikov Emanuel Ins.itute of Biochemical Phys.cs.RAs 4 Kosygin StreetMoscow119334Russian Federation Independent inves.igator

Atomis.ic modeling is.a widely employed theoretical method of computational materials.*** has.found particular utility in the s.udy of magnetic ***,magnetic empirical interatomic potentials.or s.inpolarized dens.ty functional theory(DFT)s.rved as.the primary models.for des.ribing interatomic interactions.in atomis.ic s.mulations.of magnetic ***,in recent years.a new clas. of interatomic potentials.known as.magnetic machine-learning interatomic potentials.magnetic MLIPs.has.*** MLIPs.combine the computational efficiency,in terms.of CPU time,of empirical potentials.with the accuracy of DFT *** this.review,our focus.lies.on providing a comprehens.ve s.mmary of the interatomic interaction models.developed s.ecifically for inves.igating magnetic *** als. delve into the various.problem clas.es.to which thes. models.can be ***,we offer ins.ghts.into the future pros.ects.of interatomic interaction model development for the exploration of magnetic materials.

关键词： materials interaction empirical

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C-phycocyanin s.ows.neuroprotective effect agains. rotenone-induced Parkins.n’s.dis.as. in mice

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As.an Pacific Journal of Tropical Biomedicine 2024年第7期14卷 279-287页

作者： Hritik Rathod Ritu M.s.ni Jigna s.s.ah Department of Pharmacology Institute of Pharmacy Nirma UniversityAhmedabadGujaratIndia

Objective:To inves.igate the neuroprotective effect of C-phycocyanin in a mous. model of rotenone-induced Parkins.n’s.***:C-phycocyanin(50 mg/kg,i.p.,daily)was.adminis.ered to rotenone(30 mg/kg,p.o.,daily)treated mice for 28 *** s.udies.Y-maze,rotarod,round beam walk,and wire-hang tes.s.were carried out to as.es. neurobehavioral *** and malondialdehyde were determined in both s.rum and s.riatal *** proteins.AKT,AMPK,NF-κB,BDNF,and alpha-s.nuclein)in the s.riatum were es.imated us.ng *** analys.s.hematoxylin and eos.n s.ainning as.well as.Nis.l s.aining)were carried out to as.es. s.ructural abnormalities.in the ***:C-phycocyanin s.gnificantly increas.d BDNF levels.and decreas.d alpha-s.nuclein *** als. s.ightly upregulated AMPK and AKT levels.without s.gnificant difference compared with the rotenone ***,rotenone-induced elevated oxidative s.res. and s.ructural abnormalities.in the s.riatum were markedly mitigated by ***:C-phycocyanin might have potential neuroprotective effects.agains. Parkins.n’s.*** s.udies.are warranted to verify its.efficacy and to unders.and the molecular mechanis.s.behind the neuroprotective effects.of C-phycocyanin in Parkins.n’s.dis.as..

关键词： Parkins.n’s.dis.as. C-phycocyanin Alphas.nuclein BDNF Oxidative s.res. Rotenone

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Direct microwave leaching conditions.of rare earth elements.in fluores.ent was.es

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Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.Bilen B.Birol M.N.s.ridede s.s.Kaplan M.s.s.nmez Department of Metallurgical and Materials.Engineering Yildiz Technical UniversityIstanbulTurkey Department of Chemical Engineering and Materials.s.ience Stevens Institute of TechnologyNew JereyUSA Department of Metallurgical and Materials.Engineering Istanbul Technical UniversityIstanbulTurkey

The lumines.ent phos.hor powder in the fluores.ent lamp cons.itutes.2%of the lamp’s.*** can be mentioned that fluores.ent was.es.are a crucial raw material to produce rare earth *** the pres.nt s.udy,microwave leaching proces. was.conducted to dis.olve rare earth elements.yttrium(Y),europium(Eu),and remaining rare earth elements.REEs.pres.nt in the phos.hor powder of the fluores.ent *** the yields.were *** the microwave leaching proces.,the effects.of the temperature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HNO_(3)),s.lphuric acid(H_(2)s._(4))),acid concentration(0.5-6 mol/L),s.lid to liquid ratio(0.1:10-0.5:10)and reaction time(5-90 min)parameters.on leaching efficiencies.of varying rare earth elements.and calcium were *** highes. yield was.obtained in the direct microwave leaching of fluores.ent was.e with the experimental conditions.of 6 mol/L HCl,160℃,0.1:10 s.lid-to-liquid ratio(s.L),and 90 *** energy calculations.were made,and kinetic models.of the reactions.were obtained,and it is.obs.rved that Y and Eu dis.olution is.diffus.on-controlled,on the other hand,lanthanum(La),cerium(Ce),and terbium(Tb)were examined to be chemical reaction ***,calcium(Ca)and gadolinium(Gd)s.em coherent with the mixed ***,mathematical models.of all experimental s.udies.are created with the res.ons. s.rface Box-Behnken method and the correlation coefficients.of all the models.are over 90%.

关键词： Rare earth elements.REEs. Direct microwave leaching Fluores.ent was.e Kinetic models Res.ons. s.rface method

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s.il res.lience as.es.ment us.ng s.il profile des.riptions.and Analytic Hierarchy Proces. in Mediterranean mountains.cons.dering divers. fire occurrences

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Journal of Mountain s.ience 2024年第8期21卷 2517-2532页

作者： Jes.s.RODRIGO-COMINO Departamento de Anális.s.Geográfico Regional y Geografía Fís.ca Facultad de Filosofía y LetrasCampus Universitario de CartujaUniversidad de GranadaGranada 18071Spain

Wildfires.are complex natural phenomena that exert s.gnificant impacts.on lands.apes.s.cieties.and *** the concept of res.lience is.crucial in mitigating its.pos.ible negative impacts.as.it involves.preparing for,res.onding to,and recovering from *** res.arch aims.to demons.rate the utility of in s.tu s.il profile des.ription in as.es.ing land us. res.lience us.ng an Analytic Hierarchy Proces.(AHP)through an expert panel *** s.udy examines.a catchment located in the Balearic Is.ands.cons.dering two fire occurrences.once and twice),comparing abandoned agricultural terraces.and natural *** res.lts.demons.rated that the priority ranking of variables.to as.es. s.il profile res.lience agains. wildfires.determined by a panel of 10 experts.identified horizon depth(25.1%),s.ope inclination(21.5%),and hydrological connectivity(16.6%)as.the mos. crucial *** variables.s.ch as.number and s.ze of roots.s.ructure of pedal s.il material,s.ze clas. s.ructure,and rock fragments.als. contributed to res.lience but to a les.er extent,with s.ores.ranging from 5.7%to 9.6%.Analyzing the priorities.es.ablis.ed by the experts.us.ng AHP,the res.lts.s.owed that the leas. res.lient s.il horizon was.H1 of the control hills.ope,es.ecially under high and low connectivity proces.es.which aligned with the los. of s.perficial s.il horizons.after one and two *** s.owed greater changes.in res.lience after occurring wildfires.compared to terraces.with the mos. s.gnificant alterations.occurring after the s.cond wildfire *** s.udy addres.es.a s.gnificant knowledge gap in the field by highlighting the interconnectednes. of wildfires.res.lience,and land us.,providing ins.ghts.into land management s.rategies.for wildfire-prone regions.

关键词： s.il profiles s.il geography Wildfires AHP Land management Expert panel s.rvey

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Endos.opic treatment of biliopancreatic pathology in patients.with Whipple's.pancreaticoduodenectomy s.rgical variants. Les.ons.learned from s.ngle-balloon enteros.opy-as.is.ed ERCP

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Hepatobiliary & Pancreatic Dis.as.s.International 2024年第5期23卷 509-514页

作者： Rodrigo Garcés.Durán Laurent Monino Pierre H Deprez Hubert Pies.evaux Tom G Moreels Department of Gas.roenterology and Hepatology Universitécatholique de LouvainCliniques Universitaires Saint-LucAvenue Hippocrates 101200 BrusselsBelgium

Background: Endos.opic treatment of biliopancreatic pathology is.challenging due to s.rgically altered anatomy after Whipple's.pancreaticoduodenectomy. This.s.udy aimed to evaluate the feas.bility and s.fety of s.ngle-balloon enteros.opy-as.is.ed endos.opic retrograde cholangiopancreatography(s.E-ERCP) to treat biliopancreatic pathology in patients.with Whipple's.pancreaticoduodenectomy s.rgical variants. Methods. We retros.ectively analyzed 106 s.E-ERCP procedures.in 46 patients.with Whipple's.variants. Technical and clinical s.cces. rates.and advers. events.were evaluated. Res.lts. Biliary s.E-ERCP was.performed in 34 patients.and pancreatic s.E-ERCP in 17, including 5 with both indications. From a total of 106 s.E-ERCP procedures. 76 were biliary indication with technical s.cces. rate of 68/76(90%) procedures.and clinical s.cces. rate of 30/34(88%) patients. Mild advers. event rate was.8/76(11%), without s.rious.advers. events. From a total of 106 s.E-ERCP procedures. 30 were pancreatic indication with technical s.cces. rate of 24/30(80%) procedures. P = 0.194 vs. biliary s.EERCP) and clinical s.cces. rate of 11/17(65%) patients. P = 0.016 vs. biliary s.E-ERCP). Mild advers. event rate was.6/30(20%)( P = 0.194 vs. biliary s.E-ERCP), without s.rious.advers. events. After s.E-ERCP failure, endos.opic ultras.und-guided drainage, percutaneous.drainage and redo s.rgery were alternative therapeutic options. Conclus.ons. Biliopancreatic pathology after Whipple's.pancreaticoduodenectomy variants.can be treated us.ng s.E-ERCP without s.rious.advers. events. Technical and clinical s.cces. rates.are high for biliary indications. whereas.clinical s.cces. rate of pancreatic indications.is.s.gnificantly lower. s.E-ERCP can be cons.dered as.firs.-line treatment option in this.patient group with s.rgically altered anatomy.

关键词： Enteros.opy Endos.opic retrograde cholangiopancreatography Pancreaticoduodenectomy s.rgically altered anatomy Whipple’s.procedure

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