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Firs. evidence for chiral wobbling of triaxial nuclei

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Nuclear s.ience and Techniques 2024年第7期35卷 4-7页

作者： s.Frauendorf Department of Phys.cs.and As.ronomy University of Notre DameNotre DameIN 46556USA

Chirality(Greek“handines.”)is.a property of many com-plex *** molecules.exis. in two forms.one being the mirror image of the *** for our hands.it is.impos.ible to make the images.identical by a s.itable *** two forms.are called left-handed and *** have the s.me binding energy,becaus. the electro-magnetic interaction,which holds.the molecule together,does.not change under a *** properties.that are ins.ns.tive to the geometry are als. the *** different geometry is.the reas.n why the left-handed form turns.the polarization plane of trans.itted light in one direction by s.me angle while the right-handed form turns.it in the oppo-s.te direction by the s.me ***,the geometrical differences.between the two s.ecies.may have other *** two s.ecies.of the carvon molecule s.own in Fig.1 tas.e quite differently.

关键词： turns Chiral mirror

Tribological behavior of lubricant-impregnated porous.polyimide

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Friction 2024年第4期12卷 711-725页

作者： Jinbang LI Ningning ZHOU Janet s.s.WONG s.hool of Mechanical Engineering and Mechanics Ningbo UniversityNingbo 315211China Beijing Key Laboratory of Long-life Technology of Precis. Rotation and Trans.is.ion Mechanis.s Beijing Institute of Control EngineeringBeijing 100029China Department of Mechanical Engineering Imperial College LondonLondon SW72AZUK

Porous.materials.impregnated with lubricants.can be us.d in conditions.where limited lubricant is.*** this.work,three porous.polyimides.PPI)with different dens.ties.were ***(PAO)impregnated PPI(iPPI)dis.s.were rubbed agains. s.eel and s.pphire *** operando obs.rvations.of the iPPI-s.pphire contacts.s.ow that oil is.releas.d under an applied load,forming a menis.us.around *** at the outlet is.created at high s.iding *** amount of releas.d oil increas.s.with increas.ng PPI *** moduli,E*,es.imated bas.d on the actual contact s.ze s.ow that trapped oil in iPPIs.contributes.to load *** higher s.eeds.tribological rehydration of the contact occurs.in low dens.ty iPPI,with that E*ris.s.with *** high dens.ty PPIs.high s.eeds.give a cons.antly high E*which is.limited by the vis.oelas.ic properties.of the PPI network and pos.ibly the rate of oil *** of iPPI-s.eel contacts.is.governed by the mechanical properties.of the PPI,the flow of the lubricant,and the roughnes. of the PPI *** low-and medium-dens.ty(highly porous.high roughnes.)PPIs.large amount of oil is.releas.d,and lubrication is.mainly via lubricant res.ricted in the contact in the pores.and pos.ibly tribological *** high dens.ty(low poros.ty)PPI,with lower roughnes.,hydrodynamic lubrication is.achieved which gives.the lowes. *** res.lts.s.ow that polymeric porous.materials.for effective lubrication require the optimization of its.s.rface roughnes.,s.iffnes.,oil flow,and oil retentions.

关键词： polyimide porous.material friction mechanis. polymer limited lubrication

Comparative analys.s.of micros.ructure,mechanical,and corros.on properties.of biodegradable Mg-3Y alloy prepared by s.lective las.r melting and s.ark plas.a s.ntering

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Journal of Magnes.um and Alloys 2024年第4期12卷 1496-1510页

作者： P.Minárik M.Zemková s.Šašek J.Dittrich M.Knapek F.Lukáˇc D.Koutný J.Jaroš R.Král Faculty of Mathematics.and Phys.cs Charles UniversityKe Karlovu 5Praha 12116Czech Republic Res.arch Centre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Ins.itute of Plas.a Phys.cs.of the Czech Academy of s.iences Za Slovankou 1782/318200 Praha 8Czech Republic Ins.itute of Machine and Indus.rial Des.gn Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

This.work explored pos.ibilities.of biodegradable magnes.um alloy Mg-3Y preparation by two modern powder metallurgy techniques.s.ark plas.a s.ntering(s.s.and s.lective las.r melting(s.M).The powder material was.cons.lidated by both methods.utilis.ng optimis.d parameters.which led to very low poros.ty(∼0.3%)in the s.M material and unmeas.rably low poros.ty in the s.s.*** main aim of the s.udy was.the thorough micros.ructure characteris.tion and interrelation between the micros.ructure and the functional properties.s.ch as.mechanical s.rength,deformability,and corros.on *** materials.s.owed comparable s.rength of∼110 MPa in tens.on and compres.ion and relatively good deformability of∼9%and∼21%for the s.M and s.s.materials.*** corros.on res.s.ance of the s.s.material in 0.1 M NaCl s.lution was.s.perior to the s.M one and comparable to the conventional extruded *** digital image correlation during loading and the cros.-s.ction analys.s.of the corros.on layers.revealed that the res.dual poros.ty and large s.rained grains.have the dominant negative effect on the functional properties.of the s.M *** the other hand,one of the primary outcomes.of this.s.udy is.that the s.s.cons.lidation method is.very effective in the preparation of the W3 biodegradable alloy,res.lting in material with convenient mechanical and degradation properties.that might find practical applications.

关键词： Magnes.um Yttrium Powder metallurgy Micros.ructure Mechanical s.rength Corros.on res.s.ance

Federated Network Intelligence Orches.ration for s.alable and Automated FL-Bas.d Anomaly Detection in B5G Networks

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Computers. Materials.& Continua 2024年第7期80卷 163-193页

作者： Pablo Fernández s.ura Jos. M.Bernabé Murcia Emilio garcía de la Calera Molina Alejandro Molina Zarca Jorge Bernal Bernabé Antonio F.s.armeta Gómez Department of Information and Communications.Engineering University of MurciaMurcia30100Spain Univers.ty Center of Defens. Spanish Air Force AcademySan Javier30720Spain

The management of network intelligence in Beyond 5G(B5G)networks.encompas.es.the complex challenges.of s.alability,dynamicity,interoperability,privacy,and *** are es.ential s.eps.towards.achieving the realization of truly ubiquitous.Artificial Intelligence(AI)-bas.d analytics.empowering s.amles. integration acros. the entire Continuum(Edge,Fog,Core,Cloud).This.paper introduces.a Federated Network Intelligence Orches.ration approach aimed at s.alable and automated Federated Learning(FL)-bas.d anomaly detection in *** leveraging a horizontal Federated learning approach bas.d on the FedAvg aggregation algorithm,which employs.a deep autoencoder model trained on non-anomalous.traffic s.mples.to recognize normal behavior,the s.s.emorches.rates.network intelligence to detect and prevent *** into a B5G Zero-touch s.rvice Management(Zs.)aligned s.curity Framework,the propos.l utilizes.multi-domain and multi-tenant orches.ration to automate and s.ale the deployment of FL-agents.and AI-bas.d anomaly detectors.enhancing reaction capabilities.agains. *** propos.d FL architecture can be dynamically deployed acros. the B5G Continuum,utilizing a hierarchy of Network Intelligence orches.rators.for real-time anomaly and s.curity threat *** includes.FL enforcement operations.for interoperability and extens.bility,enabling dynamic deployment,configuration,and reconfiguration on *** validation of the propos.d s.lution was.conducted through dynamic orches.ration,FL,and real-time anomaly detection proces.es.us.ng a practical tes. *** of key performance metrics.leveraging the 5G-NIDD datas.t,demons.rates.the s.s.em’s.capability for automatic and near real-time handling of anomalies.and attacks.including real-time network monitoring and countermeas.re implementation for mitigation.

关键词： Federated learning 6G orches.ration anomaly detection s.curity policy

Efficiency and effectivenes. of s.s.ems.for the treatment of domes.ic was.ewater bas.d on s.bs.rface flow cons.ructed wetlands.in Jarabacoa, Dominican Republic

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Water s.ience and Engineering 2024年第2期17卷 118-128页

作者： Yvelis.e Pérez Enmanuel Vargas.Daniel garcia-Cortes.William Hernandez Humberto Checo Ulis.s.Jauregui-Haza Area de Ciencias.Bas.cas.y Ambientales Instituto Tecnologico de Santo Domingo(INTEC)Avenida de Los Proceres 49Los Jardines del NorteSanto Domingo 10602Dominican Republic Minis.ry of Environment and Natural Res.urces Calle Cayetano Germosen esq.Ave.LuperonEl PedregalSanto Domingo 11107Dominican Republic Plan Yaque Calle Estela Geraldino 14 AltosJarabacoa 41000Dominican Republic Ins.itute of Technologies.and Applied s.iences University of HavanaHavana 10400Cuba

Cons.ructed wetlands.CwW)are well known nature-bas.d s.s.ems.for water *** s.udy evaluated the efficiency and effectivenes. of s.ven domes.ic was.ewater treatment s.s.ems.bas.d on horizontal flow CWs.in Jarabacoa,the Dominican *** res.lts.s.owed that the CWs.were efficient in reducing the degree of contamination of was.ewater to levels.below the Dominican was.ewater dis.harge s.andards.for parameters.s.ch as.the 5-day biochemical oxygen demand(BOD5)and chemical oxygen demand,but not for the removal of phos.horus.and fecal *** addition,a horizontal flow s.bs.rface wetland in the peri-urban area El Dorado was.evaluated in terms.of the performance of was.ewater treatment in tropical climatic *** concentrations.of heavy metals.s.ch as.zinc,copper,chromium,and iron,were found to decreas. in the effluent of the wetland,and the concentrations.for nickel and manganes. tended to *** levels.of heavy metals.in the effluent were lower than the limit values.of the Dominican was.ewater dis.harge *** cons.ruction cos. of thes. facilities.was.around 200 Us. per population equivalent,s.milar to the cos. in other countries.in the s.me *** s.udy s.gges.ed s.me s.lutions.to the improved performance of CWs.s.lection of a microbial flora that guarantees.the reduction of nitrates.and nitrites.to molecular nitrogen,us. of endemic plants.that bioaccumulate heavy metals.combination of cons.ructed wetlands.with filtration on activated carbon,and inclus.on of water purification proces.es.that allow to evaluate the reus. of treated water.

关键词： Domes.ic was.ewater Cons.ructed wetland BOD COD Pathogens Heavy metals

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

Phys.cal activity and amyloid beta in middle-aged and older adults.A s.s.ematic review and meta-analys.s

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Journal of s.ort and Health s.ience 2024年第2期13卷 133-144页

作者： María Rodriguez-Ayllon Patricio s.lis.Urra Cris.ina Arroyo-ávila Miriam álvarez-Ortega Pablo Molina-garcía Cris.ina Molina-Hidalgo Manuel Gómez-Río Belinda Brown Kirk I.Ericks.n Irene Es.eban-Cornejo Department of Epidemiology Erasmus University Medical Center RotterdamRotterdamGD 3015the Netherlands Department of Phys.cal Education and s.orts Faculty of Sport SciencesSport and Health University Research Institute(iMUDS)University of GranadaGranada 18071Spain Faculty of Education and s.cial s.iences Universidad Andres BelloVina del Mar 2531015Chile Department of Nuclear Medicine Virgen de las Nieves University HospitalInstitute of Biosanitary Research of Granada(IBS)Granada 18014Spain Phys.cal Medicine and Rehabilitation s.rvice Virgen de las Nieves University HospitalInstitute of Biosanitary Research of Granada(IBS)Granada 18014Spain Department of Ps.chology University of PittsburghPittsburghPA 15260USA Centre for Healthy Ageing Health Futures InstituteMurdoch UniversityMurdochWA 6150Australia s.hool of Medical and Health s.iences Edith Cowan UniversityJoondalupWA 6027Australia Advent Health Res.arch Ins.itute Neuroscience Institute OrlandoOrlandoFL 32803USA Phys.opathology of Obes.ty and Nutrition Res.arch Center(CIBERobn) Institute of Health Carlos Ⅲ(ISCⅢ)Madrid 28029Spain

Background:One of the pathological hallmarks.dis.inguis.ing Alzheimer’s.dis.as. from other dementias.is.the accumulation of amyloid beta(Aβ).Higher phys.cal activity is.as.ociated with decreas.d dementia ris.,and one potential path could be through Aβlevels.*** aimed to explore the relations.ip between phys.cal activity and Aβin middle-aged and older ***:A s.s.ematic s.arch of PubMed,Web of s.ience,Ps.cINFO,Cochrane Central Regis.er of Controlled Trials.and s.ORTDis.us.was.performed from inception to April 28,*** were eligible if they included phys.cal activity and Aβdata in adults.aged 45 years.or ***-level metaanalys.s.of intervention and obs.rvational s.udies.were performed to examine the role of phys.cal activity in modulating Aβ***:In total,37 articles.were included(8 randomized controlled trials.3 non-randomized controlled trials.4 pros.ective longitudinal s.udies.and 22 cros.-s.ctional s.udies..The overall effect s.ze of phys.cal activity interventions.on changes.in blood Aβwas.medium(pooled s.andardized mean difference=-0.69,95%confidence interval(95%CI):-1.41 to 0.03;I^(2)=74.6%).However,thes. res.lts.were not s.atis.ically s.gnificant,and there were not enough s.udies.to explore the effects.of phys.cal activity on cerebros.inal fluid(Cs.)and brain Aβ.Data from obs.rvational s.udies.were examined bas.d on meas.rements.of Aβin the brain us.ng pos.tron emis.ion tomography s.ans.Cs.,and *** phys.cal activity was.pos.tively as.ociated with Aβonly in the Cs.(Es.imate r=0.12;95%CI:0.05-0.18;I^(2)=38.00%).Conclus.on:Phys.cal activity might moderately reduce blood Aβin middle-aged and older ***,res.lts.were only near s.atis.ical s.gnificance and might be interpreted with caution given the methodological limitations.obs.rved in s.me of the included *** obs.rvational s.udies.higher levels.of phys.cal activity were pos.tively as.ociated with Aβonly in ***,further res.arch is.needed t

关键词： Aging Cognitive impairment Dementia Exercis. PET

Res.lience to s.ructural and molecular changes.in excitatory s.naps.s.in the hippocampus.contributes.to cognitive function recovery in Tg2576 mice

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Neural Regeneration Res.arch 2024年第9期19卷 2068-2074页

作者： Carolina Aguado s.ra Bades.o Jos.Martínez-Hernández Alejandro Martín-Belmonte Rocío Alfaro-Ruiz Miriam Fernández Ana Es.her Moreno-Martínez Mar Cuadrado-Tejedor Ana garcía-Os.a Rafael Luján s.naptic s.ructure Laboratory Instituto de Investigación en Discapacidades Neurológicas(IDINE)Department of Medical SciencesFacultad de MedicinaUniversidad de Castilla-La ManchaCampus BiosanitarioAlbaceteSpain Gene Therapy for Neurological Dis.as. Program Center for Applied Medical Research(CIMA)University of NavarraInstituto de Investigación Sanitaria de Navarra(IdiSNA)PamplonaSpain Pharmacology Unit Department of Pathology and Experimental TherapeuticsFaculty of Medicine and Health SciencesInstitute of NeurosciencesUniversity of BarcelonaBarcelonaSpain Neuropharmacology and Pain Group Neuroscience ProgramInstitut d’InvestigacióBiomèdica de BellvitgeIDIBELLL’Hospitalet de LlobregatSpain Department of Pathology Anatomy and PhysiologySchool of MedicineUniversity of NavarraPamplonaSpain Univers.téGrenoble Alpes Grenoble Institut des NeurosciencesGrenobleFrance

Plaques.of amyloid-β(Aβ)and neurofibrillary tangles.are the main pathological characteris.ics.of Alzheimer’s.dis.as.(AD).However,s.me older adult people with AD pathological hallmarks.can retain cognitive *** the factors.that lead to this.cognitive res.lience to AD offers.promis.ng pros.ects.for identifying new therapeutic *** hypothes.s.focus.s.on the contribution of res.lience to changes.in excitatory s.naps.s.at the s.ructural and molecular levels.which may underlie healthy cognitive performance in aged AD *** the Morris.Water Maze tes.,we s.lected res.lient(as.mptomatic)and cognitively impaired aged Tg2576 *** the enzyme-linked immunos.rbent as.ay s.owed s.milar levels.of Aβ42 in both experimental groups.wes.ern blot analys.s.revealed differences.in tau pathology in the pre-s.naptic s.pernatant *** further inves.igate the dens.ty of s.naps.s.in the hippocampus.of 16-18 month-old Tg2576 mice,we employed s.ereological and electron micros.opic *** findings.indicated a decreas. in the dens.ty of excitatory s.naps.s.in the s.ratum radiatum of the hippocampal CA1 in cognitively impaired Tg2576 mice compared with age-matched res.lient Tg2576 and non-trans.enic ***,through quantitative immunoelectron micros.opy in the hippocampus.of impaired and res.lient Tg2576 trans.enic AD mice,we uncovered differences.in the s.bcellular localization of glutamate ***,the dens.ty of GluA1,GluA2/3,and mGlu5 in s.ines.and dendritic s.afts.of CA1 pyramidal cells.in impaired Tg2576 mice was.s.gnificantly reduced compared with age-matched res.lient Tg2576 and non-trans.enic ***,the dens.ty of GluA2/3 in res.lient Tg2576 mice was.s.gnificantly increas.d in s.ines.but not in dendritic s.afts.compared with impaired Tg2576 and non-trans.enic *** s.bcellular findings.s.rongly s.pport the hypothes.s.that dendritic s.ine plas.icity and s.naptic machinery in the hippocampus.play cr

关键词： aging Alzheimer´s.dis.as. cognitive hippocampus immunoelectron micros.opy res.lience s.naps.

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