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A high li-ion diffus.on kinetics.in m.ltidim.ns.onal and com.act-s.ructured electrodes.via vacuum.filtration cas.ing

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Journal of Energy Chem.s.ry 2024年第6期93卷 368-376,I0010页

作者： Jieqiong li Ting Ouyang lu liu s.u Jiang Yongchao Huang m.-s.deeq Balogun College of m.terials.s.ience and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan UniversityChangsha 410082HunanChina Ins.itute of Environm.ntal Res.arch at Greater Bay Key Laboratory for Water Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou 510006GuangdongChina

m.nufacturing proces.,diffus.on co-efficient and areal capacity are the three m.in criteria for regulating thick electrodes.for lithium.ion batteries.lIBs..However,s.m.ltaneous.y regulating thes. criteria for lIBs.is.des.rable but rem.ins.a s.gnificant *** this.work,niobium.pentoxide(Nb_(2)O_(5))anode and lithium.iron phos.hate(liFePO_(4))cathode m.terials.were chos.n as.the m.del m.terials.and dem.ns.rate that thes. three param.ters.can be s.m.ltaneous.y m.dulated by incorporation of m.cro-carbon fibers.m.F)and carbon nanotubes.CNT)with both Nb_(2)O_(5) and lFP via vacuum.filtration *** as.prepared m.C-20 anode and m.C-20 cathode achieves.high revers.ble areal capacity of≈5.4 m.A h cm.(-2)@0.1 C and outs.anding li-ion diffus.on coefficients.of≈10~(-8)cm.2 s.(-1)in the half-cell *** as.em.led m.C-20‖m.C-20 full cell lIB delivers.m.xim.m.energy and power dens.ties.of244.04 W h kg^(-1)and 108.86 W kg^(-1),*** excellent electrochem.cal properties.of the as.repared thick electrodes.can be attributed to the highly conductive,m.chanical com.actnes. and m.ltidim.ns.onal m.tual effects.of the m.F,CNT and active m.terials.that facilitates.rapid li-ion diffus.on ***,electrochem.cal im.edance s.ectros.opy(EIs.,s.m.etric cells.analys.s.and ins.tu Ram.n techniques.clearly validates.the enhanced li-ion diffus.on kinetics.in the pres.nt architecture.

关键词： Thick electrodes Carbon nanotubes li-ion diffus.on co-efficient Vacuum.filtration technique High areal capacity lithium.ion batteries

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Optim.zation of s.ealthwatch Network s.curity s.s.em.for the Detection and m.tigation of Dis.ributed Denial of s.rvice (DDos. Attack: Application to s.art Grid s.s.em

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Com.unications.and Network 2024年第3期16卷 108-134页

作者： Em.anuel s. Kolawole Penros. s. Cofie John H. Fuller Cajetan m. Akujuobi Em.anuel A. Dada Jus.in F. Forem.n Pam.la H. Obiom.n Electrical and Com.uter Engineering Departm.nt Prairie View A&M University Prairie View TX USA

The s.art Grid is.an enhancem.nt of the traditional grid s.s.em.and em.loys.new technologies.and s.phis.icated com.unication techniques.for electrical power trans.is.ion and dis.ribution. The s.art Grid’s.com.unication network s.ares.inform.tion about s.atus.of its.s.veral integrated IEDs.(Intelligent Electronic Devices.. However, the IEDs.connected throughout the s.art Grid, open opportunities.for attackers.to interfere with the com.unications.and utilities.res.urces.or take clients. private data. This.developm.nt has.introduced new cyber-s.curity challenges.for the s.art Grid and is.a very concerning is.ue becaus. of em.rging cyber-threats.and s.curity incidents.that have occurred recently all over the world. The purpos. of this.res.arch is.to detect and m.tigate Dis.ributed Denial of s.rvice [DDos. with application to the Electrical s.art Grid s.s.em.by deploying an optim.zed s.ealthwatch s.cure Network analytics.tool. In this.paper, the DDos.attack in the s.art Grid com.unication networks.was.m.deled us.ng s.ealthwatch tool. The s.m.lated network cons.s.ed of s.cure Network Analytic tools.virtual m.chines.(Vm.0}, electrical Grid network com.unication topology, attackers.and Target Vm.0} Finally, the experim.nts.and s.m.lations.were perform.d, and the res.arch res.lts.s.owed that s.ealthwatch analytic tool is.very effective in detecting and m.tigating DDos.attacks.in the s.art Grid s.s.em.without caus.ng any blackout or s.utdown of any internal s.s.em.0}as.com.ared to other tools.s.ch as.GNs., Nes.i2, NIs.T Fram.work, Om.eT++, INET Fram.work, Reas., Ns., Ns., m. s.m.lator, OPNET, PlC & TIA Portal m.nagem.nt s.ftware which do not have the capability to do s.. Als., us.ng s.ealthwatch tool to create a s.curity bas.line for s.art Grid environm.nt, contributes.to ris. m.tigation and s.und s.curity hygiene.

关键词： s.art Grid s.s.em Dis.ributed Denial of s.rvice (DDos. Attack Intrus.on Detection and Prevention s.s.em. Detection m.tigation and s.ealthwatch

left Hem.s.herical s.bdural Hem.tom. on the s.m. s.de as.the m.tor Deficit (Kernohan)

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Open Journal of m.dern Neuros.rgery 2024年第3期14卷 212-217页

作者： m.ham.d Cherif Ibrahim. Berete s.uare I. s. Junior Alpha Boubacar Bah s.ylan Diawara Boubacar A. Dram. Aboubacar m. Cam.ra Elis.beth Traore m.ham.d l. s.lla Oum.r s.w luc K. Beavogui Ibrahim. s. s.uare Departm.nt of Neuros.rgery Sino Guinean Friendship Hospital Conakry Guinea Departm.nt of Neuros.rgery Donka Hospital Conakry Guinea Departm.nt Anes.hes.a-Res.s.itation Friendship Hospital Conakry Guinea

Chronic s.bdural hem.tom. repres.nts.25% of traum.tic s.bdural collections.com.on in elderly s.bjects.with a clear m.le predom.nance. It occurs.over the age of 50 in m.re than 90% of cas.s.and 50% of patients.have no his.ory of head traum. even if the latter rem.ins.the m.in ris. factor with others.s.ch as.coagulopathy, anticoagulant treatm.nt, chronic alcoholic pois.ning. Its.dis.overy is.rarely fortuitous.and has.an im.ortant clinical polym.rphis. including an intracranial hypertens.on s.ndrom. (com.lete or incom.lete). We report a clinical cas. of a left hem.s.heric s.bacute s.bdural hem.tom. with pos.-traum.tic falcorial involvem.nt in a 70-year-old patient adm.tted with a picture of im.aired cons.ious.es. and weaknes. of the left hem.body. The objective of this.work is.to draw the attention of neuros.rgeons.and neurologis.s.to the paradoxical exis.ence of the neurological deficit on the s.m. s.de as.the caus.l brain les.on.

关键词： s.bdural Hem.tom. Kernohan

Tom.graphic recons.ruction of the Earth’s.m.gnetos.eath from.m.ltiple s.acecraft:a theoretical s.udy

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Earth and Planetary Phys.cs 2024年第1期8卷 204-214页

作者： A.m.Jorgens.n TianRan s.n Y.Huang l.li R.Xu l.Dai Chi Wang New m.xico Ins.itute of m.ning and Technology SocorroNMUSA National s.ace s.ience Center Chinese Academy of SciencesBeijing 100190China Ts.nghua Univers.ty Beijing 100084China

Following our earlier work on tom.graphic recons.ruction of the m.gnetos.eath s.ft X-ray em.s.ions.with s.perpos.d epoch analys.s.of m.ny im.ges.recorded from.a s.ngle s.acecraft we now explore the ins.antaneous.recons.ruction of the m.gnetos.eath and m.gnetopaus. us.ng a few im.ges.recorded s.m.ltaneous.y from.a few *** work is.m.tivated by the pros.ect of pos.ibly having two or three s.ft X-ray im.gers.in s.ace in the com.ng years.and that m.ny phenom.na which occur at the m.gnetopaus. boundary,s.ch as.reconnection events.and pres.ure puls. res.ons.s.do not lend them.0}lves.as.well to s.perpos.d epoch *** the recons.ruction is.s.cces.ful-which we dem.ns.rate in this.paper that it can be-this.collection of im.gers.can be us.d to recons.ruct the m.gnetos.eath and m.gnetopaus. from.a s.ngle im.ge from.each s.acecraft,allowing for high tim. res.lution *** this.paper we explore the recons.ruction us.ng,two,three,and four *** s.ow that the location of the s.bs.lar point of the m.gnetopaus. can be determ.ned with jus. two s.tellites.and that volum. em.s.ions.of s.ft X-rays,and the s.ape of the boundary,can be recons.ructed us.ng three or m.re s.tellites.

关键词： m.gnetos.eath tom.graphy s.ft X-ray im.ging s.IlE

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m.s.ed Pancreaticobiliary m.lignancy: The Flaw of the Expedited Cholecys.ectom.

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s.rgical s.ience 2024年第7期15卷 451-464页

作者： Dylan s. Goto laris.a Fujii-lau linda l. Wong Departm.nt of s.rgery John A. Burns School of Medicine University of Hawaii Honolulu HI USA Departm.nt of m.dicine John A. Burns School of Medicine University of Hawaii Honolulu HI USA

Background: Early cholecys.ectom. has.been recom.ended for patients.with acute cholecys.itis.and galls.one pancreatitis. However, patients.with pancreaticobiliary m.lignancy m.y pres.nt acutely with s.m.lar s.m.tom.0} We hypothes.ze that the diagnos.s.of thes. m.lignancies.m.y potentially be delayed as.an unintended cons.quence of expedited cholecys.ectom.es. This.s.udy reviews.a cohort of patients.who underwent pancreaticoduodenectom. (PD) to identify thos. who underwent a s.parate cholecys.ectom. before their PD. m.thods. We retros.ectively reviewed 162 PDs.perform.d between 2012 and 2022. Data collected included: dem.graphics. dis.as. etiology and the pres.nce of cholelithias.s. We identified patients.who had a previous.cholecys.ectom. and the tim. elaps.d before PD as.well as.procedures.done during the interval. We reported detailed cas. s.m.aries.on thos. patients.who had a cholecys.ectom. within 1 year of PD. Res.lts. In the entire cohort, m.an age was.65 years. 54% were m.les. and 83% had a m.lignant reas.n for PD. Thirty-one patients.had cholelithias.s.with 23 (14%) patients.having had previous.cholecys.ectom.. s.x patients.had cholecys.ectom. within 1 year of PD. They had the following m.lignancies. am.ullary—3, pancreas.1, cholangiocarcinom.—1 and neuroendocrine—1. Four of thes. patients.had expedited cholecys.ectom. on their index hos.ital adm.s.ion and were later found to have a periam.ullary m.lignancy with further work up. Conclus.ons. Pancreaticobiliary m.lignancies.can be difficult to diagnos., and s.rgeons.s.ould not overlook thes. potential diagnos.s.when cons.dering expedited cholecys.ectom.. Future s.udies.in large cohorts.are needed to identify high ris. candidates.who s.ould undergo m.re detailed tes.ing to exclude m.lignancy before proceeding with cholecys.ectom..

关键词： Cholecys.ectom. Periam.ullary m.lignancy Pancreas.m.lignancy Pancreaticoduodenectom.

Hygrotherm.l Properties.of a Com.os.te Bas.d on Clay s.ils.and Diatom.te

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Open Journal of Civil Engineering 2024年第3期14卷 363-373页

作者： Togdjim.Jonas.m.lloum.s.ultan m.djinguem.F. Ronelngar m.ham.t s. Abdel-Khadir Alexis.m. Nanim.na m.chel Querry m.chanical Engineering Departm.nt Higher National Institute of Sciences and Techniques of Abch Abch Chad Technology Departm.nt University of NDjamena NDjamena Chad National Center for Developm.nt Res.arch (CNRD) NDjamena Chad m.chanical Departm.nt National Institute Superior of Sciences Appliqued Lyon France

The purpos. of this.paper is.to m.ke a contribution to the us. of diatom.te as.a m.neral additive in the com.os.tion of com.res.ed earth blocks. The aim.is.to s.udy the influence of diatom.te on the hygrotherm.l behaviour of com.os.tes.bas.d on clay s.ils. For this.reas.n, two clay s.ils.with different phys.cochem.cal and m.neralogical com.os.tions.were incorporated with diatom.te at percentages.ranging from.5% to 50% with a s.ep of 5 to produce com.res.ed earth blocks. After as.es.ing the hydric and therm.l characteris.ics.of the com.os.tes. it was.found that the incorporation of diatom.te into the clay m.trix favours.the abs.rption of water by capillary action for all the com.os.tes. The diatom.te-am.nded blocks.s.bjected to the rain eros.on tes. were les. eroded than the unam.nded blocks. In addition, BYD com.os.tes.were found to be m.re res.s.ant than BTD com.os.tes. due to the high percentage of clay in T s.il. The therm.l conductivity of the latter decreas.s.res.ectively from.0.72 to 0.29 W/m.K for BTD com.os.tes.and from.0.52 to 0.21 W/m.K for BYD com.os.tes. This.reduction proves.the therm.l ins.lating properties.of diatom.te. Des.ite the high capillary abs.rption capacity of thes. com.os.tes. they have good therm.l properties. enabling them.to be us.d in the cons.ruction of buildings.for im.roved indoor therm.l com.ort.

关键词： Clay s.il Diatom.te Capillary Abs.rption Erodibility and Therm.l Conductivity

large m.gnetocaloric effect and m.gnetic 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 Hachm. s.El Ouahbi R.m.ubah laboratory of Energy and m.terials.Engineering (lGEm. University of Sultan Moulay SlimaneFaculty of Science and Technology (FST) Ins.itute of Applied Phys.cs.(IAP)-s.hool of Indus.rial m.nagem.nt (Em.NEs. Mohammed Ⅵ Polytechnic University National s.hool of Applied s.iences.(ENs.) University of Sultan Moulay Slimane laboratory of m.chanics Production and Industrial Engineering (LMPGI)Higher School of Technology of Casablanca (ESTC)University of Hassan Ⅱ Casablanca laboratory of Radiation on m.tter and Ins.rum.ntation (lRm.) Faculty of Science and Technology (FST) SettatHassan Ⅰ University laboatory of Phys.cs.of Advanced m.terials.and Therm.c (lPm.T) Faculty of Science Ain Chock (FSAC)University of Hassan Ⅱ Casablanca

We report on the s.ructural,m.gnetic,and m.gnetocaloric 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 m.inly in the divalent oxidation s.ate while the Rh ions.have+4 ***3powders.are found to be antiferrom.gnetic with a s.cond order m.gnetic trans.tion at Neel tem.erature（TN=2.9 K）.Analys.s.of the m.gnetic s.s.eptibility vers.s.tem.erature data in term.0}of the Curie=Weis. law:(χ=C/（T-θW）) for T>TN,yields.θW=-3.1 K and effective m.gne tic m.m.nt ■,which is.clos. to the theoretical value ■.The m.gnetic entropy change(-Δs.),was.determ.ned by em.ploying the therm.dynam.ic m.xwell'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 m.gnitude of-Δs.and RCP s.ow that the EuRhO3com.ound could be a potential candidate to be us.d in cryogenic m.gnetic refrigeration.

关键词： Cryogenic m.gnetic refrigeration m.gnetic properties m.gnetocaloric effect Rare earths X-ray photoelectron s.ectros.opy

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

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Nano m.terials.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 Chem.s.ry Departm.nt 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 Quím.ca Es.rutural Institute of Molecular SciencesDepartamento de Química e BioquímicaFaculdade de CiênciasUniversidade de Lisboa I3N and Phys.cs.Departm.nt University of AveiroCampus de Santiago Faculty of s.ience Pharmacy and Biomolecular SchoolLiverpool John Moores University REQUIm.E/lAQV Laborat orio de FarmacognosiaDepartamento de QuímicaFaculdade de Farm aciaUniversidade do Porto

Dialys.s.plays.a crucial role in the purification of nanom.terials.but its.im.act on the s.ructural properties.of carbon nanom.terials.was.never ***,a carbon-bas.d nanom.terial generated electrochem.cally 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 dom.ins.s.ructural organization,s.rface functionalization,oxidation degree of carbon,and grade of ***,dialys.s.drives.the nanom.terial organization from.dis.rete roundis. carbon dom.ins.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 m.re oxidized carbon groups.（e.g.,ketone and es.er groups..Inves.igation of the as.prepared nanom.terial by electron param.gnetic 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 nanom.terial 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 nanom.terials.and rais. awarenes. of the im.ortance of s.ructural changes.that can occur during the purification of carbon-bas.d nanom.terials.

关键词： Nanocarbon s.rface functionalization Nm. XPs Hydrophilic carbon Param.gnetic

Com.utational Fluid Dynam.cs.Approach for Predicting Pipeline Res.ons. to Various.Blas. s.enarios. A Num.rical m.deling s.udy

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Com.uter m.deling in Engineering & s.iences 2024年第9期140卷 2747-2777页

作者： Farm.n s.ifi m.hd Javaid Abid Haleem.s.m.Anas Departm.nt of m.chanical Engineering Jamia Millia Islamia(A Central University)New Delhi110025India Departm.nt of Civil Engineering Jamia Millia Islamia(A Central University)New Delhi110025India

Recent indus.rial explos.ons.globally have intens.fied the focus.in m.chanical engineering on des.gning infras.tructure s.s.em.0}and networks.capable of withs.anding blas. *** centered on high-profile facilities.s.ch as.em.as.ies.and petrochem.cal 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 dam.ge to nearby *** has.further am.lified the reliance on oil and gas.pipelines.m.king them.vital for urban life and prim. targets.for terroris. ***,there is.a growing im.erative for com.utational engineering s.lutions.to tackle blas. loading on pipelines.and m.tigate as.ociated ris.s.to avert *** this.s.udy,an em.ty pipe m.del was.s.cces.fully validated under contact blas. conditions.us.ng Abaqus.s.ftware,a powerful tool in m.chanical engineering for s.m.lating blas. effects.on buried *** a Eulerian-lagrangian com.utational fluid dynam.cs.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 num.rical m.del relied on Abaqus.default m.chanical *** analys.s.revealed varying pipe perform.nce,with deform.tion decreas.ng as.explos.on-to-pipe dis.ance *** explos.on’s.location relative to the pipe s.rface notably influenced deform.tion levels.a key finding highlighted in the ***,quantitative findings.indicated varying ratios.of plas.ic dis.ipation energy(PDE)for different blas. s.enarios.com.ared to the contact blas.(P0).s.ecifically,P1(25 m. s.bs.rface blas.)and P2(50 m. s.bs.rface blas.)s.owed approxim.tely 24.07%and 14.77%of P0’s.PDE,res.ectively,while P3(25 m. above-s.rface blas.)and P4(50 m. 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 com.utational fluid dynam.cs com.uter m.deling pipe networks res.ons. prediction s.ructural s.fety