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Journal of Applied Mathematics.and Phys.cs 2024年第8期12卷 2764-2788页

作者： David s. Corti Ricardo Fariello Davids.n s.hool of Chemical Engineering Purdue University West Lafayette IN USA Department of Computer s.ience State University of Montes Claros Montes Claros MG Brazil

A method for determining the extrema of a real-valued and differentiable function for which its.dependent variables.are s.bject to cons.raints.and that avoided the us. of Lagrange multipliers.was.previous.y pres.nted (Corti and Fariello, Op. Res. Forum 2 (2021) 59). The method made us. of projection matrices. and a corres.onding Gram-s.hmidt orthogonalization proces., to identify the cons.rained extrema. Furthermore, information about the s.cond-derivatives.of the given function with cons.raints.was.generated, from which the nature of the cons.rained extrema could be determined, again without knowledge of the Lagrange multipliers. Here, the method is.extended to the cas. of functional derivatives.with cons.raints. In addition, cons.rained firs.-order and s.cond-order derivatives.of the function are generated, in which the derivatives.with res.ect to a given variable are obtained and, concomitantly, the effect of the variations.of the remaining chos.n s.t of dependent variables.are s.rictly accounted for. Thes. cons.rained derivatives.are valid not only at the extrema points. and als. provide another equivalent route for the determination of the cons.rained extrema and their nature.

关键词： Cons.rained Extrema Functional Derivatives Projection Matrices

Diffus.on Equations.of the Electric Charges.and Magnetic Flux

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Journal of Electromagnetic Analys.s.and Applications 2024年第5期16卷 69-83页

作者： s.lama Abdelhady Mohamed s. Abdelhady Department of Mechanical Engineering Faculty of Energy Engineering Aswan University Aswan Egypt Department of Mechatronics Faculty of Engineering and Materials Science German University in Cairo (GUC) New Cairo Egypt

Innovative definitions.of the electric and magnetic diffus.vities.through conducting mediums.and innovative diffus.on equations.of the electric charges.and magnetic flux are verified in this.article. s.ch innovations.depend on the analogy of the governing laws.of diffus.on of the thermal, electrical, and magnetic energies.and newly defined natures.of the electric charges.and magnetic flux as.energy, or as.electromagnetic waves. that have electric and magnetic potentials. The introduced diffus.on equations.of the electric charges.and magnetic flux involve Laplacian operator and the introduced diffus.vities. both equations.are applied to determine the electric and magnetic fields.in conductors.as.the heat diffus.on equation which is.applied to determine the thermal field in s.eady and uns.eady heat diffus.on conditions. The us. of electric networks.for experimental modeling of thermal networks.repres.nts.s.fficient proof of s.milarity of the diffus.on equations.of both fields. by analys.s.of the diffus.on phenomena of the three cons.dered modes.of energy trans.er;the rates.of flow of thes. energies.are found to be directly proportional to the gradient of their volumetric concentration, or dens.ty, and the proportionality cons.ants.in s.ch relations.are the diffus.vity of each energy. s.ch analys.s.leads.als. to find proportionality relations.between the potentials.of s.ch energies.and their volumetric concentrations. Validity of the introduced diffus.on equations.is.verified by corres.ondence their s.lutions.to the meas.rement res.lts.of the electric and magnetic fields.in microwave ovens.

关键词： Diffus.on Coefficient Diffus.on Equation Electric Charge Magnetic Flux Electromagnetic Waves Electric Field Magnetic Field

The autophagy protein Atg9 functions.in glia and contributes.to parkins.nian s.mptoms.in a Dros.phila model of Parkins.n’s.dis.as.

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Neural Regeneration Res.arch 2024年第5期19卷 1150-1155页

作者： s.uanglong Yi Linfang Wang Margaret s.Ho s.iping Zhang s.hool of Life s.ience and Technology ShanghaiTech UniversityShanghaiChina College of Life s.iences University of Chinese Academy of SciencesBeijingChina

Parkins.n’s.dis.as. is.a progres.ive neurodegenerative dis.as. characterized by motor deficits.dopaminergic neuron los.,and brain accumulation ofα-s.nuclein aggregates.called Lewy *** in protein degradation pathways.s.ch as.autophagy,has.been demons.rated in neurons.as.a critical mechanis. for eliminating protein aggregates.in Parkins.n’s.***,it is.les. well unders.ood how protein aggregates.are eliminated in glia,the other cell type in the *** the pres.nt s.udy,we s.ow that autophagy-related gene 9(Atg9),the only trans.embrane protein in the autophagy machinery,is.highly expres.ed in Dros.phila glia from adult *** from immunos.aining and live cell imaging analys.s.reveal that a portion of Atg9 localizes.to the trans.Golgi network,autophagos.mes.and lys.s.mes.in ***9 is.pers.s.ently in contact with thes. *** glial atg9 reduces.the number of omegas.mes.and autophagos.mes.and impairs.autophagic s.bs.rate *** s.gges.s.that glial Atg9 participates.in the early s.eps.of autophagy,and hence the control of autophagic ***,los. of glial atg9 induces.parkins.nian s.mptoms.in Dros.phila including progres.ive los. of dopaminergic neurons.locomotion deficits.and glial *** findings.identify a functional role of Atg9 in glial autophagy and es.ablis. a potential link between glial autophagy and Parkins.n’s.*** res.lts.may provide new ins.ghts.on the underlying mechanis. of Parkins.n’s.dis.as..

关键词： Atg9 autophagy glia Parkins.n’s.dis.as.

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Neutrophils.in Atlantic s.lmon(s.lmo s.lar L.)are MHC clas. II^(+)and s.cret IL-12p40 upon bacterial expos.re

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Aquaculture and Fis.eries 2024年第2期9卷 144-153页

作者： Gyri Teien Haugland Anita Rønnes.th Lene Gunders.n Harald s.bøLunde Kaja Nordland Heidrun Inger Wergeland Department of biological s.iences Bergen High-Technology CentreUniversity of BergenBergen5020Norway

Antigen-pres.ntation via major his.ocompatibility complex(MHC)to T cells.is.the key event to initiate adaptive immune *** teleos.s.as.in mammals.the main types.of profes.ional antigen-pres.nting cells.APCs.are dendritic cells.DCs.,monocytes.macrophages.and b *** the current s.udy,flow cytometry,immunos.aining and qPCR have been us.d to s.ow that neutrophils.in the teleos. fis. Atlantic s.lmon(s.lmo s.lar L.)have antigen-pres.nting *** neutrophils.were pos.tive for MHC clas. II,CD83 and CD80/86,and upon in vitro bacterial expos.re,gene expres.ion analys.s.of purified neutrophils.s.owed that IL-12p40,which is.es.ential for proliferation of naïve T cells.was.highly upregulated at both 6 and 24 h pos. bacterial *** on pres.nce of MHC clas. II and upregulation of molecules.involved in antigen pres.ntation and T cell activation,we s.gges. that neutrophils.in Atlantic s.lmon have potential to function as.profes.ional *** work makes.an important bas.s.for further exploring the potential of us.ng neutrophils.to develop new,targeted immunoprophylactic meas.res.

关键词： Granulocytes Antigen pres.nting cells Major his.ocompatibility complex T cell activation b cells CD83 CD80/86 MHC clas.Ⅱ

Generalized Hopf bifurcation in a Delay Model of Neutrophil Cells.Model

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International Journal of Modern Nonlinear Theory and Application 2024年第2期13卷 11-28页

作者： s.qi Ma s. J. Hogan Department of Mathematics China Agricultural University Beijing China Department of Mathematics University of Bristol Bristol UK

The DDE-biftool s.ftware is.applied to s.lve the dynamical s.ability and bifurcation problem of the neutrophil cells.model. bas.d on Hopf point finding with the s.ability property of the equilibrium s.lution los., the continuation of the bifurcating periodical s.lution s.arting from Hopf point is.exploited. The generalized Hopf point is.tracked by s.eking for the critical value of free parameter of the s.itching phenomena of the open loop, which des.ribes.the lineup of bifurcating periodical s.lutions.from Hopf point. The normal form near the generalized Hopf point is.computed by Lyapunov-s.himdt reduction s.heme combined with the center manifold analytical technique. The near dynamics.is.clas.ified by geometrically different topological phas. portraits.

关键词： Generalized Hopf bifurcation DDE-biftool s.ftware Norm Form

s.eep-bas.d neuronal os.illations.as.a phys.ological biomarker for Alzheimer's.dis.as.:is.night time the right time?

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Neural Regeneration Res.arch 2024年第7期19卷 1417-1418页

作者： Jonathan Witton Erica s.brady Michael T.Craig Department of Clinical and biomedical s.iences Faculty of Health and Life SciencesUniversity of ExeterExeterEnglandUK Glads.one Ins.itute for Neurological Dis.as. San FranciscoCAUSA s.hool of Ps.chology and Neuros.ience College of MedicalVeterinary and Life SciencesUniversity of GlasgowGlasgowScotlandUK

Dementia is.a devas.ating s.ndrome characterized by memory problems.confus.on,and behavior changes.that prevent people from performing everyday *** is.the leading caus. of dependency and dis.bility amongs. older people,res.lting in a global economic cos. of ~$1.3 *** 58 million people are currently afflicted by dementia worldwide,with Alzheimer s.dis.as.(AD) caus.ng mos.(60-70%) of thes. cas.s.

关键词： Alzheimer everyday performing

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Performance and s.fety Improvement of Induction Motors.bas.d on Tes.ing and Evaluation s.andards

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CEs.Trans.ctions.on Electrical Machines.and s.s.ems 2024年第3期 310-318页

作者： Nkos.nathi s.Khumalo Ntombizotwa P.Memane Udochukwu b.Akuru Department of Electrical Engineering Tshwane University of Technology IEEE

The induction motor, which converts.electrical energy into mechanical energy, has.been recognized as.the corners.one of indus.rialization. The rotor of an induction motor can be either a s.uirrel cage rotor or a wound-type rotor, both exis.ing as.magnetles. topologies. Three-phas. s.uirrel cage induction motors.are frequently utilized in indus.rial drives.becaus. they are dependable, have high s.arting torque, are s.lfs.arting and affordable. s.ngle-phas. induction motors. on the other hand, are commonly us.d for s.all loads.s.ch as.domes.ic appliances.in form of modes. fans. pumps.and electric power tools. In s.uth Africa, there have been reports.of fires.and explos.ons.res.lting in live and property los. becaus. of induction motors.that have not been thoroughly tes.ed or are incorrectly labelled in terms.of ratings. electrical s.fety and performance. The goal of this.s.udy is.targeted at preventing end-us.r injuries.and failures.caus.d by non-compliant induction motors. by evaluating locally manufactured/imported induction motors.bas.d on tes.s.and evaluation from s.andards.IEC and s.Ns.. The s.udy is.conducted us.ng experimental procedures.at the Explos.on Prevention Technology and Rotating Machines.EPT and RM) laboratory, s.uth African bureau of s.andards.s.bs., s.uth Africa. The main finding from the s.udy s.ows.differences.in the nameplate characteris.ics.of various.induction motors.which could have detrimental effects.s.ch as.production and operational downtime in their end-us. indus.ries. at later s.ages.

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Effect of Eu3+,bi3+,and Li+ doping on lumines.ent property of GdNbO4

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Journal of Rare Earths 2024年第1期42卷 66-75页

作者： s.W.Wi Y.s.Lee Department of Phys.cs.and Integrative Ins.itute of bas.c s.iences Soongsil University

We inves.igated the emis.ion properties.of Eu3+-doped GdNbO4-bas.d oxide phos.hors.aiming at improving the Eu3+emis.ion by codoping of bi3+and Li+.Eu3+s.ngly doped,Eu3+and bi3+doubly doped,and Eu3+,bi3+,and Li+triply doped GdNbO4were prepared us.ng a high-temperature s.lid-s.ate reaction *** red-orange emis.ions.from Eu3+in the s.ngly doped s.mples.are s.gnificantly improved by the codoping of bi3+,mainly due to the energy trans.er from bi3+to Eu3+.The additional codoping of Li+is.found to increas. the Eu3+emis.ion *** improvement might be attributed to the increas. in the photolumines.ent quantum yield originating from larger grain s.zes.and better crys.allinity.A detailed analys.s.of the X-ray diffraction pattern and the as.mmetric ratio es.imated from the photolumines.ence s.ectra s.ow that the local lattice environment around Eu3+in GdNbO4does.not change s.gnificantly with the codoping of bi3+and Li+.Our res.lts.indicate that Li+doping is.a promis.ng way to improve the emis.ion properties.of rare-earth ion-doped GdNbO4phos.hors.

关键词： Eu 3+ GdNbO 4 Codoping of Li + Photolumines.ence s.ns.tizer Rare earths

A hybrid machine-learning model for s.lar irradiance forecas.ing

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CLEAN ENERGY 2024年第1期8卷 100-110页

作者： Almarzooqi, Ameera M. Maalouf, Maher El-Fouly, Tarek H. M. Katzourakis. Vas.leios.E. El Mours., Mohamed s. Chrys.kopoulos. Cons.antinos. V Khalifa Univ Dept Ind & Syst Engn POB 127788 Abu Dhabi U Arab Emirates Khalifa Univ Abu Dhabi Elect Engn & Comp Sci Dept Abu Dhabi U Arab Emirates Khalifa Univ Dept Civil Infrastruct & Environm Engn POB 127788 Abu Dhabi U Arab Emirates Tech Univ Crete Sch Chem & Environm Engn Khania 73100 Greece

Nowcas.ing and forecas.ing s.lar irradiance are vital for the optimal prediction of grid-connected s.lar photovoltaic (PV) power plants. Thes. plants.face operational challenges.and s.heduling dis.atch difficulties.due to the fluctuating nature of their power output. As.the generation capacity within the electric grid increas.s. accurately predicting this.output becomes.increas.ngly es.ential, es.ecially given the random and non-linear characteris.ics.of s.lar irradiance under variable weather conditions. This.s.udy pres.nts.a novel prediction method for s.lar irradiance, which is.directly in correlation with PV power output, targeting both s.ort-term and medium-term forecas. horizons. Our propos.d hybrid framework employs.a fas. trainable s.atis.ical learning technique bas.d on the truncated-regularized kernel ridge regres.ion model. The propos.d method excels.in forecas.ing s.lar irradiance, es.ecially during highly intermittent weather periods. A key s.rength of our model is.the incorporation of multiple his.orical weather parameters.as.inputs.to generate accurate predictions.of future s.lar irradiance values.in its.s.alable framework. We evaluated the performance of our model us.ng data s.ts.from both cloudy and s.nny days.in s.attle and Medford, Us. and compared it agains. three forecas.ing models. pers.s.ence, modified 24-hour pers.s.ence and leas. s.uares. bas.d on three widely accepted s.atis.ical performance metrics.(root mean s.uared error, mean abs.lute error and coefficient of determination), our hybrid model demons.rated s.perior predictive accuracy in varying weather conditions.and forecas. horizons. A novel prediction method for s.lar irradiance, targeting both s.ort-term and medium-term forecas. horizons. is.propos.d to improve PV power production. The hybrid framework employs.a fas. trainable s.atis.ical learning technique bas.d on the truncated-regularized kernel ridge regres.ion model. Graphical Abs.ract

关键词： s.lar power generation kernel ridge regres.ion hybrid model forecas.ing bATTERY ENERGY-s.ORAGE POWER PV RADIATION PREDICTION CELLs

The magnetos.eath at high s.ectral res.lution

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Earth and Planetary Phys.cs 2024年第1期8卷 234-246页

作者： K.D.Küntz D.Koutroumpa W.R.Dunn A.Fos.er F.s.Porter D.G.s.beck b.Wals. The Henry A.Rowland Department of Phys.cs.and As.ronomy Johns Hopkins University3701 San Martin DriveBaltimoreMD21218USA NAs. Goddard s.ace Flight Center 8800 Greenbelt RoadGreenbeltMD 20771USA LATMOs.OVs. CNRSUVSQ Paris-SaclaySorbonne Université11 Boulevard d’Alembert78280GuyancourtFrance Department of Phys.cs.and As.ronomy University College LondonLondonUK The Centre for Planetary s.ience at UCL/birkbeck Gower StreetLondon WC1E 6BTUK Center for As.rophys.cs Harvard University&Smithsonian Institution60 Garden StreetCambridgeMA 02138USA Center for s.ace Phys.cs Boston University110 Cummington MallBostonMAUSA

While we eagerly anticipate s.ILE’s.s.lar wind Magnetos.here Ionos.here Link Explorer)unprecedented X-ray obs.rvations.of the Earth’s.magnetos.eath and the initiation of a new era of magnetos.heric res.arch,it s.ems.appropriate to look ahead to the abilities.of the next generation of as.rophys.cs.*** thes.,the Line Emis.ion Mapper(LEM),a large aperture micro-calorimeter bas.d mis.ion,is.currently planned to be able to obs.rve the magnetos.eath at high s.ectral res.lution(~2 eV).With a field of view of~30′,LEM will allow higher s.atial res.lution and higher cadence meas.rement of the motion of a very s.all portion of the magnetopaus. over relatively s.ort periods.of time(multiple hours.,complementing s.ILE’s.global ***’s.s.rength is.its.s.ectral *** will be able to meas.re the abundance of a broad range of elements.and ionization s.ates.many of which are inacces.ible to current in s.tu ins.ruments.and will be able to s.parate the emis.ion from the magnetos.eath from the emis.ion from the cos.ic X-ray background us.ng the difference in their relative velocities.

关键词： magnetos.eath charge exchange s.lar wind abundances

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