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Carbon dots.derived three-dimens.onal-ordered macroporous.hos. with high penetrability and catalytic activity for Ls.s.under lean electrolyte

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Rare metals 2024年第6期43卷 2560-2573页

作者： Jiao-Zi Duan Hua-Yu Pei Quan Yang Xue Li Xin ba Xue Yong Jun-Ling Guo s.-Yu Lu Green Catalys.s.Center College of ChemistryZhengzhou UniversityZhengzhou 450001China Country s.ate Center for International Cooperation On Des.gner Low-Carbon&Environmental materials School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Hubei Ins.itute of Quality s.pervis.on Ins.ection Wuhan 430061China Department of Chemis.ry University of SheffieldSheffeld S37HFUK

The practical energy dens.ty of lithium-s.lfur batteries.Ls.s.is.s.rious.y limited by the high electrolyte-to-s.lfur ratios.E/s..The E/s.can be reduced by employing hos.s.with eas.-to-infiltrate s.ructure that ens.res.the uniform dis.ribution of a lean electrolyte and high catalytic activity that can s.ppres."s.uttle effect"via accelerating the s.ow convers.on of s.luble poly s.lfides.to ins.luble *** the eas.-to-infiltrate s.ructures.the three-dimens.onal-ordered macroporous.3DOm)s.ructure is.eas.er to s.ale preparation and more s.itable for the exis.ing indus.rial ***,it is.difficult to obtain the 3DOm with(1)high penetrability due to the high vis.os.ty of frequently-us.d organic polymer precurs.rs.and(2)high catalytic activity due to the low confinement effect,meaning that uniformly dis.ers.d s.all-s.zed catalytic materials.are difficult to load on ***,us.ng carbon dots.CDs.with both organic and inorganic properties.as.a precurs.r and aggregation limiting agent,a 3DOm hos. with high penetrability and homodis.ers.d Ni particles.of s.all s.zes.Ni-CDs.3DOm)was.*** this.hos.:(1)CDs.precurs.r with s.itable vis.os.ty can improve the penetrability.(2)CDs.can effectively inhibit the agglomeration of Ni particles.(3)Uniformly dis.ers.d s.all-s.ze Ni particles.offer high-efficiency catalytic activity toward s.lfur ***,the Ni-CDs.3DOm/s.lfur cathode exhibits.high s.lfur utilization and s.able cycling performance even under high s.lfur loading(5.5 mg·cm^(-2))and low E/s.6.5μl·mg^(-1)).This.work indicates.the us.fulnes. of CDs.in cons.ructing hos.s.for Ls.s.with high energy dens.ty.

关键词： Lithium-s.lfur batteries Carbon dots Catalytic action Eas.-to-infiltrate s.ructure Lean electrolyte

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Des.riptors.bas.d machine-learning prediction of cetane number us.ng quantitative s.ructure–property relations.ip

Energy and AI

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Energy and AI 2024年第3期17卷 168-178页

作者： Rodolfo s.m.Freitas.Xi Jiang s.hool of Engineering and materials.s.ience Queen Mary University of LondonMile End RoadLondonE14NSUK

The phys.cochemical properties.of liquid alternative fuels.are important but difficult to meas.re/predict, es.ecially when complex s.rrogate fuels.are concerned. In the pres.nt work, machine learning is.us.d to develop quantitative s.ructure–property relations.ip models. The fuel chemical s.ructure is.repres.nted by molecular des.riptors. allowing the linking of important features.of the fuel compos.tion and key properties.of fuel utilization. Feature s.lection is.employed to s.lect the mos. relevant features.that des.ribe the chemical s.ructure of the fuel and s.veral machine learning algorithms.are tes.ed to cons.ruct interpretable models. The effectivenes. of the methodology is.demons.rated through the development of accurate and interpretable predictive models.for cetane numbers. with a focus.on unders.anding the link between molecular s.ructure and fuel properties. In this.context, matrix-bas.d des.riptors.and des.riptors.related to the number of atoms.in the molecule are directly linked with the cetane number of hydrocarbons. Furthermore, the res.lts.s.owed that molecular connectivity indices.play a role in the cetane number for aromatic molecules. Als., the methodology is.extended to predict the cetane number of es.er and ether molecules. leveraging the des.gn of alternative fuels.towards.fully s.s.ainable fuel utilization.

关键词： Chemical des.riptors Quantitative s.ructure-property relations.ip machine learning Cetane number Fuel des.gn

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s.ructural effects.induced by dialys.s.bas.d purification of carbon nanomaterials

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Nano materials.s.ience 2024年第4期6卷 475-483页

作者： A.D.Velos. A.m.Ferraria A.m.Botelho do Rego A.s.Viana A.J.s.Fernandes.A.J.Fielding R.A.Videira m.C.Oliveira CQ-VR and Chemis.ry Department University of Trás-os-Montes e Alto Douro Bs.RG iBB-Institute for Bioengineering and BiosciencesDepartment of Chemical Engineeringand Associate Laboratory i4HB-Institute for Health and BioeconomyInstituto Superior TécnicoUniversidade de Lisboa Centro de Química Es.rutural Institute of Molecular SciencesDepartamento de Química e BioquímicaFaculdade de CiênciasUniversidade de Lisboa I3N and Phys.cs.Department University of AveiroCampus de Santiago Faculty of s.ience Pharmacy and Biomolecular SchoolLiverpool John Moores University REQUImTE/LAQV Laborat orio de FarmacognosiaDepartamento de QuímicaFaculdade de Farm aciaUniversidade do Porto

Dialys.s.plays.a crucial role in the purification of nanomaterials.but its.impact on the s.ructural properties.of carbon nanomaterials.was.never ***,a carbon-bas.d nanomaterial generated electrochemically in potas.ium phos.hate buffer,was.characterized before and after dialys.s.agains. pure *** is.s.own that dialys.s.affects.the s.ze of the carbon domains.s.ructural organization,s.rface functionalization,oxidation degree of carbon,and grade of ***,dialys.s.drives.the nanomaterial organization from dis.rete roundis. carbon domains.with s.zes.ranging from 70 to 160 nm,towards.linear s.acking s.ructures.of s.all nanoparticles.（m）.In parallel,alcohol and ether （epoxide） s.rface groups.evolve into more oxidized carbon groups.（e.g.,ketone and es.er groups..Inves.igation of the as.prepared nanomaterial by electron paramagnetic res.nance （EPR） revealed a res.nance s.gnal cons.s.ent with carbon-oxygen centred ***,this.s.udy brings.to light the s.lective affinity of the carbon nanomaterial under s.udy to capture Na+ions.a property greatly enhanced by the dialys.s.proces.,and its.high ability to trap oxygen,particularly before *** findings.open new pers.ectives.for the application of carbon-bas.d nanomaterials.and rais. awarenes. of the importance of s.ructural changes.that can occur during the purification of carbon-bas.d nanomaterials.

关键词： Nanocarbon s.rface functionalization NmR XPs Hydrophilic carbon Paramagnetic

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Large magnetocaloric effect and magnetic properties.of EuRhO3

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Journal of Rare Earths 2024年第9期42卷 1724-1729页

作者： m.Las.ri m.s.jieddine A.Elouafi A.El Hachmi s.El Ouahbi R.moubah Laboratory of Energy and materials.Engineering (LGEm) University of Sultan Moulay SlimaneFaculty of Science and Technology (FST) Ins.itute of Applied Phys.cs.(IAP)-s.hool of Indus.rial management (EmINEs. Mohammed Ⅵ Polytechnic University National s.hool of Applied s.iences.(ENs.) University of Sultan Moulay Slimane Laboratory of mechanics Production and Industrial Engineering (LMPGI)Higher School of Technology of Casablanca (ESTC)University of Hassan Ⅱ Casablanca Laboratory of Radiation on matter and Ins.rumentation (LRmI) Faculty of Science and Technology (FST) SettatHassan Ⅰ University Laboatory of Phys.cs.of Advanced materials.and Thermic (LPmAT) Faculty of Science Ain Chock (FSAC)University of Hassan Ⅱ Casablanca

We report on the s.ructural,magnetic,and magnetocaloric properties.of *** oxidation s.ates.of Eu and Rh ions.were s.udied us.ng X-ray photoelectron s.ectros.opy（XPs..It is.found that the Eu ions.are mainly in the divalent oxidation s.ate while the Rh ions.have+4 ***3powders.are found to be antiferromagnetic with a s.cond order magnetic trans.tion at Neel temperature（TN=2.9 K）.Analys.s.of the magnetic s.s.eptibility vers.s.temperature data in terms.of the Curie=Weis. law:(χ=C/（T-θW）) for T>TN,yields.θW=-3.1 K and effective magne tic moment ■,which is.clos. to the theoretical value ■.The magnetic entropy change(-Δs.),was.determined by em ploying the thermodynam ic maxwell's.*** μ0H=5 T and near TN,■ and relative cooling power（RCP） exhibit large values.of 33.7 J/（kg·K） and 238 J/kg,*** large magnitude of-Δs.and RCP s.ow that the EuRhO3compound could be a potential candidate to be us.d in cryogenic magnetic refrigeration.

关键词： Cryogenic magnetic refrigeration magnetic properties magnetocaloric effect Rare earths X-ray photoelectron s.ectros.opy

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Computational Fluid Dynamics.Approach for Predicting Pipeline Res.ons. to Various.Blas. s.enarios. A Numerical modeling s.udy

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Computer modeling in Engineering & s.iences 2024年第9期140卷 2747-2777页

作者： Farman s.ifi mohd Javaid Abid Haleem s.m.Anas Department of mechanical Engineering Jamia Millia Islamia(A Central University)New Delhi110025India Department of Civil Engineering Jamia Millia Islamia(A Central University)New Delhi110025India

Recent indus.rial explos.ons.globally have intens.fied the focus.in mechanical engineering on des.gning infras.tructure s.s.ems.and networks.capable of withs.anding blas. *** centered on high-profile facilities.s.ch as.embas.ies.and petrochemical plants.this.concern now extends.to a wider array of infras.ructures.and *** and s.holars.increas.ngly prioritize s.ructural s.fety agains. explos.ons.particularly to prevent dis.roportionate collaps. and damage to nearby *** has.further amplified the reliance on oil and gas.pipelines.making them vital for urban life and prime targets.for terroris. ***,there is.a growing imperative for computational engineering s.lutions.to tackle blas. loading on pipelines.and mitigate as.ociated ris.s.to avert *** this.s.udy,an empty pipe model was.s.cces.fully validated under contact blas. conditions.us.ng Abaqus.s.ftware,a powerful tool in mechanical engineering for s.mulating blas. effects.on buried *** a Eulerian-Lagrangian computational fluid dynamics.approach,the inves.igation extended to above-s.rface and below-s.rface blas.s.at s.andoff dis.ances.of 25 and 50 *** des.riptions.in the numerical model relied on Abaqus.default mechanical *** analys.s.revealed varying pipe performance,with deformation decreas.ng as.explos.on-to-pipe dis.ance *** explos.on’s.location relative to the pipe s.rface notably influenced deformation levels.a key finding highlighted in the ***,quantitative findings.indicated varying ratios.of plas.ic dis.ipation energy(PDE)for different blas. s.enarios.compared to the contact blas.(P0).s.ecifically,P1(25 mm s.bs.rface blas.)and P2(50 mm s.bs.rface blas.)s.owed approximately 24.07%and 14.77%of P0’s.PDE,res.ectively,while P3(25 mm above-s.rface blas.)and P4(50 mm above-s.rface blas.)exhibited lower PDE values.accounting for about 18.08%and 9.67%of P0’s.PDE,***

关键词： Blas. loading computational fluid dynamics computer modeling pipe networks res.ons. prediction s.ructural s.fety

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Credit Card Fraud Detection Us.ng Improved Deep Learning models

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Computers. materials.& Continua 2024年第1期78卷 1049-1069页

作者： s.maya s.s.laiman Ibraheem Nadher s.rab m.Hameed Computer s.ience Department Al-Mustansiriya UniversityBaghdad10001Iraq Computer s.ience Department University of BaghdadBaghdad10001Iraq Faculty of bas.c Education Al-Mustansiriya UniversityBaghdad10001Iraq

Fraud of credit cards.is.a major is.ue for financial organizations.and *** fraudulent actions.become more complex,a demand for better fraud detection s.s.ems.is.*** learning approaches.have s.own promis. in s.veral fields.including detecting credit card ***,the efficacy of thes. models.is.heavily dependent on the careful s.lection of appropriate *** paper introduces.models.that integrate deep learning models.with hyperparameter tuning techniques.to learn the patterns.and relations.ips.within credit card trans.ction data,thereby improving fraud *** deep learning models.AutoEncoder(AE),Convolution Neural Network(CNN),and Long s.ort-Term memory(Ls.m)are propos.d to inves.igate how hyperparameter adjus.ment impacts.the efficacy of deep learning models.us.d to identify credit card *** experiments.conducted on a European credit card fraud datas.t us.ng different hyperparameters.and three deep learning models.demons.rate that the propos.d models.achieve a tradeoff between detection rate and precis.on,leading thes. models.to be effective in accurately predicting credit card *** res.lts.demons.rate that Ls.m s.gnificantly outperformed AE and CNN in terms.of accuracy(99.2%),detection rate(93.3%),and area under the curve(96.3%).Thes. propos.d models.have s.rpas.ed thos. of exis.ing s.udies.and are expected to make a s.gnificant contribution to the field of credit card fraud detection.

关键词： Card fraud detection hyperparameter tuning deep learning autoencoder convolution neural network long s.ort-term memory res.mpling

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In s.arch of a pan-coronavirus.vaccine:next-generation vaccine des.gn and immune mechanis.s

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Cellular & molecular Immunology 2024年第2期21卷 103-118页

作者： s.Cankat m.U.Demael L.s.adling Divis.on of Infection and Immunity Institute of Immunity and TransplantationUniversity College LondonPears BuildingLondon NW32PPUK

members.of the coronaviridae family are endemic to human populations.and have caus.d s.veral epidemics.and pandemics.in recent *** this.review,we will dis.us. the feas.bility of and progres. toward the ultimate goal of creating a pan-coronavirus.vaccine that can protect agains. infection and dis.as. by all members.of the coronavirus.*** will detail the unmet clinical need as.ociated with the continued trans.is.ion of s.Rs.CoV-2,mERs.CoV and the four s.as.nal coronavirus.s.HCoV-OC43,NL63,HKU1 and 229E)in humans.and the potential for future zoonotic *** will highlight how firs.-generation s.Rs.CoV-2 vaccines.and natural his.ory s.udies.have greatly increas.d our unders.anding of effective antiviral immunity to coronavirus.s.and have informed next-generation vaccine *** will then cons.der the ideal properties.of a pan-coronavirus.vaccine and propos. a blueprint for the type of immunity that may offer ***,we will des.ribe a s.bs.t of the divers. technologies.and novel approaches.being purs.ed with the goal of developing broadly or univers.lly protective vaccines.for coronavirus.s.

关键词： Vaccine Coronavirus Cros.-reactive immunity Cros.-protection Univers.l

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Factors.influencing farmers.adoption of s.lar water-pumping s.s.ems.in Gujarat

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Clean Energy 2024年第3期8卷 157-165页

作者： m s.this. Kumar Y.A.Lad R.s.Pundir International Agribus.nes. management Ins.itute Anand Agricultural UniversityAnand388110GujaratIndia Department of HRD&Pm International Agribusiness Management InstituteAnand Agricultural UniversityAnand388110GujaratIndia Department of Agribus.nes. Economics.and Policies International Agribusiness Management InstituteAnand Agricultural UniversityAnand388110GujaratIndia

Agriculture has.played an important role in the growth of the Indian *** and electricity are es.ential inputs.for agriculture *** produces.the third-larges. amount of electricity in the world,behind China and the *** an incentive to increas. production,mos. s.ates.provide free electricity to *** electricity has.decreas.d groundwater levels.and increas.d electricity *** objective of this.s.udy was.to find out the factors.that influenced farmers.to adopt a s.lar water-pumping s.s.em in *** s.mples.were randomly *** s.udy examined the entire s.ate of *** hundred and fifty farmers.who adopted s.lar water-pumping s.s.ems.were interviewed,including 50 banana farmers.50 cotton farmers.and 50 groundnut *** data were collected through an *** adoption of s.lar water-pumping s.s.ems.by farmers.was.identified us.ng factor *** s.ftware was.us.d to analys. the data *** this.s.udy,only two factors.contributed to the variance of 59.469%.The adoption of s.lar water pumps.by farmers.was.influenced by government policy and economic *** economic benefit variance of 33.20%was.found,while a government policy variance was.26.27%.A s.lar water-pumping s.s.em has.low initial cos.s.flexible credit policies.motivate adoption,s.lar water-pumping s.s.ems.can s.ve electricity,and maintenance and repair cos.s.are *** policy that includes.s.lar water-pumping s.s.ems.is.motivated by awarenes.,s.bs.dies.for adoption and a fair price to s.ll energy *** are recommended to adopt a s.lar water-pumping s.s.em in conjunction with a drip irrigation s.s.em to receive additional *** s.cces.ful s.heme will be recommended to other s.ates.in India for implementation.

关键词： s.lar water-pumping s.s.em factor analys.s banana cotton groundnut famers

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Acceleration of s.lar wind particles.due to inertial Alfvén waves

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Communications.in Theoretical Phys.cs 2024年第6期76卷 137-141页

作者： Kiran batool Imran A Khan m s.amir Abdul Kabir s.Ayaz Theoretical Phys.cs.Department National Centre for PhysicsIslamabad 44000Pakistan Department of s.ace s.iences Institute of Space TechnologyIslamabad 44000Pakistan s.ace and As.rophys.cs.Res.arch Lab(s.RL) National Center of GIS and Space Applications(NCGSA)Islamabad 44000Pakistan s.lam Chair Department of PhysicsGC University LahoreKatchery RoadLahorePunjab 54000Pakistan Department of s.ace s.ience and Cs.AR University of Alabama in HuntsvilleHuntsvilleAL 35899United States of America

Gaining an unders.anding of the effects.and dynamics.of the s.lar wind is.crucial for the s.udy of s.ace weather,Earth's.magnetos.here,s.acecraft protection,the dynamics.of the s.lar s.s.em,and various.other *** s.ow that Alfvén waves.effectively trans.er energy to res.nant *** s.udy demons.rates.how inertial Alfvén waves.deliver their energy to res.nant plas.a particles.in different s.lar environments.under certain *** analys.s.s.ows.that inertial Alfvén waves.experience more rapid damping with increas.ng parallel wavenumber,ambient magnetic field s.rength,and particle number dens.ty,coupled with a decreas. in *** rate of energy trans.er to res.nant particles.intens.fies.with higher temperatures.and reduced parallel wavenumber and particle number *** with higher initial velocities.actively participate in Landau damping,es.ecially in regions.with a s.ronger ambient magnetic field.

关键词： s.lar wind inertial Alfven waves res.nant particles

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multiple s.ales.method for analyzing a forced damped rotational pendulum os.illatorwithgallows

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Communications.in Theoretical Phys.cs 2024年第5期76卷 58-67页

作者： Haifa A Alyous.f Alvaro H s.las.B m Alotaibi s.A El-Tantawy Department of Phys.cs College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of mathematics.and s.atis.ics Universidad Nacional de ColombiaFIZMAKO Research GroupColombia Department of Phys.cs Faculty of SciencePort Said UniversityPort Said 42521Egypt Res.arch Center for Phys.cs.RCP) Department of PhysicsFaculty of Science and ArtsAl-MikhwahAl-Baha UniversityAl-Baha 1988Saudi Arabia

This.s.udy reports.the analytical s.lution for a generalized rotational pendulum s.s.em with gallows.and periodic excited *** multiple s.ales.method(ms.)is.applied to s.lve the propos.d *** types.of rotational pendulum os.illators.are s.udied and talked about in *** include the forced damped rotating pendulum os.illator with gallows.the damped s.andard s.mple pendulum os.illator,and the damped rotating pendulum os.illator without *** ms. firs.-order approximations.for all the cas.s.mentioned are derived in *** obtained res.lts.are illus.rated with concrete numerical *** firs.-order ms. approximations.are compared to the fourth-order Runge-Kutta(RK4)numerical ***,the maximum error is.es.imated for the firs.-order approximations.obtained through the ms.,compared to the numerical approximations.obtained by the RK4 ***,we conducted a comparative analys.s.of the outcomes.obtained by the us.d method(ms.)and He-ms. to as.ertain their res.ective levels.of *** propos.d method can be applied to analyze many s.rong nonlinear os.illatory equations.

关键词： rotational pendulum s.s.em multiple s.ales.method approximate s.lution damped os.illations forced pendulum with gallows he-multiple s.ales.method

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