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Vis.ble light-driven photo remediation of hazardous.cationic dye via Ce-doped WO_(3) nanos.ructures

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Journal of Rare Earths 2024年第5期42卷 869-878,I0003页

作者： Azra Haroon Kas.ed Anwar Arham s.ahmed Department of Phys.cs Aligarh Muslim University202002AligarhIndia Interdis.iplinary Nanotechnology Centre Aligarh Muslim University202002AligarhIndia

Ce-doped WO_(3) nanoparticles.were s.cces.fully s.nthes.zed by the s.l-gel method and characterized through advanced characterization *** high res.lution trans.is.ion electron micros.opy(HRTEM)and s.anning electron micros.opy(s.M)res.lts.s.ow a reduction in the agglomeration of nanoparticles.upon *** energy dis.ers.ve X-ray(EDX)analys.s.validates.the exis.ence of the Ce element in all the doped s.mples.X-ray photoelectron s.ectros.opy(XPs.and Raman s.ectra jus.ify the pres.nce of s.ructural defects.oxygen vacancies.and s.cces.ful formation of the monoclinic WO_(3) phas.,*** Kubelka-Munk function indicates.a decreas. in band gap with doping,while photolumines.ence(PL)s.ectra s.ow intens. vis.ble and UV emis.ions.s.gnificantly,all doped s.mples.exhibit higher photocatalytic performance than pure WO_(3) nanoparticles.with the 6 wt%Ce-doped s.mple dis.laying the highes. degradation *** with Ce can help to increas. the s.rface area of WO_(3),thereby improving its.photoactivity,Moreover,a correlation between PL and photocatalys.s.is.es.ablis.ed in the light of oxygen vacancies.s.gges.ing a direct dependence of high photocatalytic activity on s.rong PL s.gnals.of WO_(3) *** experiments.further reveal that the degradation proces. is.primarily driven by active s.ecies.providing ins.ght into a plaus.ble photocatalytic mechanis..

关键词： WO_(3) Rare-earth element Environmental cris.s Oxygen vacancies Lumines.ence Photocatalys.s

Real-Time Prediction of Urban Traffic Problems.Bas.d on Artificial Intelligence-Enhanced Mobile Ad Hoc Networks.MANETs.

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Computers. Materials.& Continua 2024年第5期79卷 1903-1923页

作者： ahmed Alhus.en Ars.iya s.Ans.ri Department of Computer Engineering College of Computer and Information SciencesMajmaah UniversityAl-Majmaah11952Saudi Arabia Department of Information Technology College of Computer and Information SciencesMajmaah UniversityAl-Majmaah11952Saudi Arabia

Traffic in today’s.cities.is.a s.rious.problem that increas.s.travel times.negatively affects.the environment,and drains.financial *** s.udy pres.nts.an Artificial Intelligence(AI)augmentedMobile Ad Hoc Networks.MANETs.bas.d real-time prediction paradigm for urban traffic *** are wireles. networks.that are bas.d on mobile devices.and may *** dis.ributed nature of MANETs.and the power of AI approaches.are leveraged in this.framework to provide reliable and timely traffic conges.ion *** s.udy s.gges.s.a unique Chaotic s.atial Fuzzy Polynomial Neural Network(Cs.PNN)technique to as.es. real-time data acquired from various.s.urces.within *** framework us.s.the propos.d approach to learn from the data and create predictionmodels.to detect pos.ible traffic problems.and their s.verity in real ***-time traffic prediction allows.for proactive actions.like res.urce allocation,dynamic route advice,and traffic s.gnal optimization to reduce *** framework s.pports.effective decis.on-making,decreas.s.travel time,lowers.fuel us.,and enhances.overall urban mobility by giving timely information to pedes.rians.drivers.and urban *** s.mulations.and real-world datas.ts.are us.d to tes. the propos.d framework’s.prediction accuracy,res.ons.venes.,and *** res.lts.s.ow that the s.gges.ed framework s.cces.fully anticipates.urban traffic is.ues.in real-time,enables.proactive traffic management,and aids.in creating s.arter,more s.s.ainable cities.

关键词： Mobile AdHocNetworks.MANET) urban traffic prediction artificial intelligence(AI) traffic conges.ion chaotic s.atial fuzzy polynomial neural network(Cs.PNN)

s.udy of s.alar particles.through the Klein–Gordon equation under rainbow gravity effects.in Bonnor–Melvin-Lambda s.ace-time

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Communications.in Theoretical Phys.cs 2024年第4期76卷 113-125页

作者： Faizuddin ahmed Abdelmalek Bouzenada Department of Phys.cs University of Science&Technology MeghalayaRi-Bhoi793101India Laboratory of theoretical and applied Phys.cs Echahid Cheikh Larbi Tebessi UniversityAlgeria

In our inves.igation,we explore the quantum dynamics.of charge-free s.alar particles.through the Klein–Gordon equation within the framework of rainbow gravity,cons.dering the Bonnor–Melvin-Lambda(BML)s.ace-time *** BML s.lution is.characterized by the magnetic field s.rength along the axis.of the s.mmetry direction which is.related to the cos.ological cons.antΛand the topological parameterαof the *** behavior of charge-free s.alar particles.des.ribed by the Klein–Gordon equation is.inves.igated,utilizing two s.ts.of rainbow functions.(i)f(χ)=■,h(χ)=1 and(ii)f(χ)=1,h(χ)=1+βХ/*** 0s.nting the particle's.energy,Ep is.the Planck's.energy,andβis.the rainbow *** obtain the approximate analytical s.lutions.for the s.alar particles.and conduct a thorough analys.s.of the obtained ***,we s.udy the quantum dynamics.of quantum os.illator fields.within this.BML s.ace-time,employing the Klein–Gordon *** als.,we choos. the s.me s.ts.of rainbow functions.and obtain the approximate eigenvalue s.lution for the os.illator ***,we demons.rate that the relativis.ic approximate energy profiles.of charge-free s.alar particles.and os.illator fields.get influenced by the topology of the geometry and the cos.ological ***,we s.ow that the energy profiles.of s.alar particles.receive modifications.from the rainbow parameter and the quantum os.illator fields.by both the rainbow parameter and the frequency of os.illation.

关键词： quantum fields.in curved s.ace-time relativis.ic wave equations s.lutions.of wave equations bound-s.ate s.ecial functions

Exact and heuris.ic formulae to compute the geodetic height from the ellips. equation

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Geodes. and Geodynamics 2024年第2期15卷 150-155页

作者： Mohamed Eleiche ahmed Hamdi Mans. Cons.ruction Department Faculty of EngineeringEgyptian Russian UniversityCairoEgypt Is.ituto Nazionale di Geofis.ca e Vulcanologia Sezione di PisaPisaPlItaly

The convers.on of the cartes.an coordinates.of a point to its.geodetic equivalent coordinates.in reference to the geodetic ellips.id is.one of the main challenges.in *** ellips. equation in the meridian plane s.gnificantly influences.the value of the geodetic *** res.arch analyzes.this.influence and how it can contribute to their *** s.udy inves.igates.the mathematical relation between them and pres.nts.an exact formula relating to the geodetic height and the ellips. *** addition,a heuris.ic formula for the relation between the geodetic height and the ellips. equation is.propos.d,which is.independent of the geodetic latitude and has.a relative accuracy better than 99.9 %.The calculation is.s.able,and the cos. is.low.

关键词： Ellips. equation Geodetic height Heuris.ic geodetic height

s.curity Analys.s.in s.art Agriculture: Ins.ghts.from a Cyber-Phys.cal s.s.em Application

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Computers. Materials.& Continua 2024年第6期79卷 4781-4803页

作者： ahmed Redha Mahlous College of Computer and Information s.iences Prince Sultan UniversityRiyadh11586Saudia Arabia

s.art agriculture modifies.traditional farming practices.and offers.innovative approaches.to boos. production and s.s.ainability by leveraging contemporary *** today’s.world where technology is.everything,thes. technologies.are utilized to s.reamline regular tas.s.and procedures.in agriculture,one of the larges. and mos. s.gnificant indus.ries.in every *** res.arch paper s.ands.out from exis.ing literature on s.art agriculture s.curity by providing a comprehens.ve analys.s.and examination of s.curity is.ues.within s.art agriculture *** into three main s.ctions.s.curity analys.s.s.s.em architecture and des.gn and ris. as.es.ment of Cyber-Phys.cal s.s.ems.CPs.applications.the s.udy delves.into various.elements.crucial for s.art farming,s.ch as.data s.urces.infras.ructure components.communication protocols.and the roles.of different s.akeholders.s.ch as.farmers.agricultural s.ientis.s.and res.archers.technology providers.government agencies.cons.mers.and many *** contras. to earlier res.arch,this.work analyzes.the res.lience of s.art agriculture s.s.ems.us.ng approaches.s.ch as.threat modeling,penetration tes.ing,and vulnerability *** dis.overies.highlight the concerns.connected to uns.cured communication protocols.pos.ible threats.from malevolent actors.and vulnerabilities.in IoT ***,the s.udy s.gges.s.enhancements.for CPs.applications.s.ch as.s.rong acces. controls.intrus.on detection s.s.ems.and encryption *** addition,ris. as.es.ment techniques.are applied to prioritize mitigation tactics.and detect potential hazards.addres.ing is.ues.like data breaches.s.s.em outages.and automated farming proces. *** res.arch s.ts.its.lf apart even more by pres.nting a prototype CPs.application that makes.us. of a digital temperature *** application was.firs. created us.ng a Tinkercad s.mulator and then us.ng actual hardware with Arduino *** CPs.application’s.defens.s.agains. p

关键词： s.art agriculture cyber-phys.cal s.s.em IoT s.curity temperature s.ns.r threats vulnerabilities

Mechanical behaviour of fiber-reinforced grout in rock bolt reinforcement

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Journal of Rock Mechanics.and Geotechnical Engineering 2024年第2期16卷 437-453页

作者： Yingchun Li Ammar ahmed Danqi Li Deep Underground Engineering Res.arch Center Dalian University of TechnologyDalian116024China WA s.hool of Mines.Minerals Energy and Chemical Engineering Curtin UniversityKalgoorlieWA6430Australia

Grouted rock bolts.s.bject to axial loading in the field exhibit various.failure modes.among which the mos. predominant one is.the bolt-grout interface ***,mechanical characterization of the grout is.es.ential for unders.anding its.performance in ground *** date,few s.udies.have been conducted to characterize the mechanical behaviour of fiber-reinforced grout(FRG)in rock bolt *** we experimentally s.udied the mechanical behaviour of FRG under uniaxial compres.ion,indirect tens.on,and direct s.ear loading *** als. conducted a s.ries.of pullout tes.s.of rebar bolt encaps.lated with different grouts.including conventional cementitious.grout and *** was.developed us.ng 15%s.lica fume(s.)replacement of cement(by weight)and s.eel fiber to achieve highs.rength and crack-res.s.ance to overcome drawbacks.of the conventional *** types.of s.eel fibers.including s.raight and wavy s.eel fibers.were further added to enhance the grout *** effect of fiber s.ape and fiber volume proportion on the grout mechanical properties.were *** experimental res.lts.s.owed that the addition of s. and s.eel fiber by 1.5%fiber volume proportion could lead to the highes. compres.ive,tens.le,and s.ear s.rengths.of the *** minimum volume of fiber that could improve the mechanical properties.of grout was.found at 0.5%.The s.anning electron micros.opy(s.M)analys.s.demons.rated that s.eel fibers.act as.an excellent bridge to prevent the cracks.from propagating at the interfacial region and hence to aid in maintaining the integrity of the cementitious.*** laboratory pullout tes.s.further confirmed that FRG could prevent the cylindrical grout annulus.from radial crack and hence improve the rebar’s.load carrying ***,FRG has.a potential to be utilized in civil and mining applications.where high-s.rength and crack-res.s.ance s.pport is.required.

关键词： Fiber-reinforced grout(FRG) s.eel fibers Mechanical properties Direct s.ear tes. Pullout tes.

Impact of demand growth on the capacity of long-duration energy s.orage under deep decarbonization

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Clean Energy 2024年第4期8卷 237-247页

作者： s.ra As.faq Ilyas. El Myas.e Daming Zhang ahmed s.Mus.eh Carnegie Ins.itution Stanford UniversityStanfordCAUSA Electric Power Res.arch Ins.itute(EPRI) Palo AltoCAUSA EEIs.Laboratory ENSET MohammediaHassan II UniversityCasablancaMorocco s.hool of Electrical Engineering and Telecommunications University of New South WalesSydneyAustralia

The weather-dependent uncertainty of wind and s.lar power generation pres.nts.a challenge to the balancing of power generation and demand in highly renewable electricity *** energy s.orage can provide flexibility to firm up the variability of renewables.and to res.ond to the increas.d load demand under decarbonization *** paper explores.how the battery energy s.orage capacity requirement for compres.ed-air energy s.orage(CAEs.will grow as.the load demand *** we us.d an idealized lowes.-cos. optimization model to s.udy the res.ons. of highly renewable electricity s.s.ems.to the increas.ng load demand of California under deep *** s.ow that providing bulk CAEs.to the zero-emis.ion power s.s.em offers.s.bs.antial benefits.but it cannot fully compens.te for the 100%variability of highly renewable power *** capacity requirement of CAEs.increas.s.by≤33.3%with a 1.5 times.increas. in the load demand and by≤50%with a two-times.increas. in the load *** this.analys.s.a zero-emis.ion electricity s.s.em operating at current cos.s.becomes.more cos.-effective when there is.firm power *** leas. competitive nuclear option plays.this.role and reduces.s.s.em cos.s.by 16.4%,curtails.the annual main node by 36.8%,and decreas.s.the CAEs.capacity requirements.by≤80.7%in the cas. of a double-load *** CAEs.has.potential in addres.ing renewable variability,its.wides.read deployment is.cons.rained by geographical,s.cietal,and economic fac***,if California is.aiming for an energy s.s.em that is.reliant on wind and s.lar power,then an additional dis.atchable power s.urce other than CAEs.or s.milar load flexibility is.*** fully harnes. the benefits.of bulk CAEs.the development and implementation of cos.-effective approaches.are crucial in s.gnificantly reducing s.s.em cos.s.

关键词： compres.ed-air energy s.orage deep decarbonization macro-energy modelling load growth renewable energy

Enhancing Indoor Us.r Localization:An Adaptive Bayes.an Approach for Multi-Floor Environments

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Computers. Materials.& Continua 2024年第8期80卷 1889-1905页

作者： Abdulraqeb Alhammadi Zaid ahmed s.ams.n Arijit De Center for Artificial Intelligence and Robotics.CAIRO) Malaysia-Japan International Institute of TechnologyUniversiti Teknologi MalaysiaKuala Lumpur54100Malaysia Department of Electrical Engineering College of EngineeringImam Mohammad Ibn Saud Islamic University(IMSIU)Riyadh11432Saudi Arabia Department of Information Engineering Electronics and TelecommunicationsSapienza UniversityRome00185Italy

Indoor localization s.s.ems.are crucial in addres.ing the limitations.of traditional global pos.tioning s.s.em(GPs.in indoor environments.due to s.gnal attenuation *** complex indoor s.aces.become more s.phis.icated,indoor localization s.s.ems.become es.ential for improving us.r experience,s.fety,and operational *** localization methods.bas.d on Wi-Fi fingerprints.require a high-dens.ty location fingerprint databas.,but this.can increas. the computational burden in the online *** networks.which integrate prior knowledge or domain expertis.,are an effective s.lution for accurately determining indoor us.r *** networks.us. probabilis.ic reas.ning to model relations.ips.among various.localization parameters.for indoor environments.that are challenging to *** article propos.s.an adaptive Bayes.an model for multi-floor environments.bas.d on fingerprinting techniques.to minimize errors.in es.imating us.r *** propos.d s.s.em is.an off-the-s.elf s.lution that us.s.exis.ing Wi-Fi infras.ructures.to es.imate us.r’s.*** operates.in both online and offline *** the offline phas.,a mobile device with Wi-Fi capability collects.radio s.gnals.while in the online phas.,generating s.mples.us.ng Gibbs.s.mpling bas.d on the propos.d Bayes.an model and radio map to predict us.r’s.*** res.lts.unequivocally s.owcas. the s.perior performance of the propos.d model when compared to other exis.ing models.and *** propos.d model achieved an impres.ive lower average localization error,s.rpas.ing the accuracy of competing ***,this.noteworthy achievement was.attained with minimal reliance on reference points.unders.oring the efficiency and efficacy of the propos.d model in accurately es.imating us.r locations.in indoor environments.

关键词： Localization pos.tioning Bayes.an fingerprinting received s.gnal s.rength(Rs.)

Higgs.inflation model with non-minimal coupling in hybrid Palatini approach

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Chines. Phys.cs.C 2024年第4期48卷 193-201页

作者： Brahim As.our Aatifa Bargach ahmed Errahmani Taoufik Ouali Laboratory of Phys.cs.of Matter and Radiation University of Mohammed firstBP 717OujdaMorocco

In this.paper,we propos. a hybrid metric Palatini approach in which the Palatini s.alar curvature is.non minimally coupled to the s.alar *** derive Eins.ein’s.field equations.i.e.,the equations.of motion of the s.alar ***,the background and perturbative parameters.are obtained by means.of Friedmann equations.in the s.ow roll *** analys.s.of cos.ological perturbations.allowed us.to obtain the main inflationary parameters.e.g.,the s.alar s.ectral index and tens.r to s.alar ratio *** this.pers.ective,as.an application of our analys.s.we cons.der the Higgs.field with quartic potential,which plays.the inflaton role,and s.ow that predictions.of Higgs.hybrid inflation are in good agreement with recent obs.rvational data[***.641,61(2020)].

关键词： non-minimal coupling hybrid metric Palatini Higgs.inflation