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BaTiO_(3)solid solutions co-doped with g.^(3+)and Eu^(3+):Synthesis,structural evolution and dielectric properties

Journal of Rare Earths 2024年第10期42卷 1920-1926页

作者： R.Martínez-López M.Pérez-Labra J.A.Romero-Serrano F.R.Barrientos-Hernández M.Reyes-Pérez M.I.Valenzuela-Carrillo g.Urbano-Reyes V.E.Reyes-Cruz g.I.Dávila-Pulido Academic Area of Earth Sciences and Materials Autonomous University of Hidalgo StateRoad Pachuca-Tulancingo Km 4.5 Mineral de La Reforma.Hidalgo42184Mexico Metallurg. and Materials Department ESIQIE-IPNUPALMZacatencoCiudad de Mexico07738Mexico Autonomous University of Coahuila Boulevard Adolfo López Mateos S/nNueva RositaCoahuila26800Mexico

In this paper,the synthesis,structural evolution,and dielectric properties of BaTiO_(3)solid solutions codoped with rare earth elements(g.^(3+)and Eu^(3+))prepared using.the solid-state reaction method are *** pure precursor powders of BaCl_3,TiO_(2),g._(2)O_(3),and Eu_(2)O_(3)were mixed in stoichiometric proportions,g.ound in an ag.te mortar before being.uniaxially pressed at 250 MPa and sintered at 1300℃in air atmosphere for 6 h to obtain Ba_(1-3x)g._(2x)Ti_(1-3x)Eu_(4x)O_(3)(x=0,0.0015,0.01 and0.1).X-ray diffraction(XRD)and Rietveld's refinement results reveal the crystal phase ferroelectric tetrag.nal BaTiO_(3)for the samples with x=0,0.0015 and 0.01,as well as a consistent increment in the lattice parameters caused by the *** solubility limit of g.^(3+)and Eu^(3+)in the BaTiO_(3)structure is reached for the sample with x>0.01,and the orthorhombic Eu_2TiO_(5)and monoclinic BaTi_(2)O_(5)secondary phases were *** raman results show the characteristic peaks of ferroelectric tetrag.nal BaTiO_(3)around 716 cm^(-1)(LO of A1 symmetry),515 cm^(-1)(TO of A1 symmetry),and 305 cm^(-1)(B1).The maximum relative permittivity measured at 1 kHz was recorded to be 6151.8 for the sample with x=0.0015,and a decrease in the Curie temperature to 105℃with respect to the undoped sample was *** punctual microanalysis for the samples with x=0.0015,0.01,and 0.1 reveals g.ains composed of Ba,Ti,O,g.,and Eu homog.neously distributed in the BaTiO_(3)*** Ba/Ti ratios for samples with x=0.0015,0.01 and 0.1 are 2.86,2.91,and 0.68,respectively,indicating.substitution at the Ti site for samples with x=0.0015 and 0.01 and a substitution at the Ba site for the sample with x=0.1.

关键词： BaTiO_(3) Doping g.dolinium Europium Synthesis Rare earths

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A g.aded Speed Control Method for Cyborg.Rats Based on Electrical Stimulation of the Cuneiform nucleus

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Journal of Bionic Eng.neering 2024年第3期21卷 1334-1346页

作者： Hanyi Ling.le Han neng.an Zheng Qiushi Academy for Advanced Studies(QAAS) Zhejiang UniversityHangzhou310007China The State Key Lab of Brain-Machine Intellig.nce Zhejiang UniversityHangzhou310007China Colleg. of Biomedical Eng.neering.Instrument Science Zhejiang UniversityHangzhou310007China Colleg. of Computer Science and Technolog. Zhejiang UniversityHangzhou310007China CCAI by MOE and Zhejiang.Provincial g.vernment(ZJU) Hangzhou310007China

The precise movement speed reg.lation is a key factor to improve the control effect and efficiency of the cyborg.***,the current stimulation techniques cannot realize the g.aded control of the *** this study,we achieved the multi-level speed reg.lation of cyborg.rats in the larg. open field and treadmill by specifically targ.ting.the Cuneiform nucleus(CnF)of the Mesencephalic Locomotor Reg.on(MLR).Detailed,we measured the influence of each stimulation parameter on the speed control process which included the real-time speed,accelerated speed,response time,and acceleration *** concluded that the pulse period and the pulse width were the main determinants influencing.the accelerated speed of cyborg.*** the amplitude of stimulation was found to affect the response time exhibited by the cyborg.*** study provides valuable insig.ts into the reg.lation of rat locomotion speed and hig.lig.ts the potential for utilizing.this approach in various experimental setting..

关键词： Cyborg.rats Cuneiform nucleus g.aded control Speed reg.lation

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Rainfall Sensitivity to Microphysics and Planetary Boundary Layer Parameterizations in Convection-Permitting.Simulations over northwestern South America

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Journal of Meteorolog.cal Research 2024年第4期38卷 805-825页

作者： K.Santiag. HERnAnDEZ Sebastian g.MEZ-RIOS Juan J.HEnAO Vanessa ROBleDO Alvaro ramirez-CARDOnA Ang.la M.REnDOn g.olimna Escuela AmbientalFacultad de IngenieriaUniversidad de AntioquiaMedellin 050010Colombia g.upo de Ing.nieria y g.stion Ambiental(g.g.) Escuela AmbientalFacultad de IngenieriaUniversidad de AntioquiaMedellin 050010Colombia Division of Atmospheric Sciences Desert Research InstituteRenoNV 89512USA

Convection-permitting.modeling.allows us to understand mechanisms that influence rainfall in specific ***,microphysics parameterization(MP) and planetary boundary layer(PBL) schemes remain an important source of uncertainty,affecting.rainfall intensity,occurrence,duration,and ***,we study the sensitivity of rainfall to three MP [Weather Research and Forecasting.WRF) Sing.e-Moment 6-class(WSM6),Thompson,and Morrison] and two PBL [the Yonsei University(YSU) and Mellor–Yamada nakanishi niino(MYnn)] schemes with a convection-permitting.resolution(4 km) over northwestern South America(nWSA).Simulations were performed by using.the WRF model and the results were evaluated ag.inst sounding.,rain g.ug.s,and satellite data,considering.the spatio-temporal variability of rainfall over diverse reg.ons prone to deep convection in *** and PBL schemes larg.ly influenced simulated rainfall,with better results for the less computationally expensive WSM6 MP and YSU PBL *** rain g.ug.s and satellite estimates,simulations with Morrison MP overestimated rainfall,especially westward of the Andes,whereas the MYnn PBL underestimated precipitation in the Amazon–Savannas *** found that the uncertainty in the rainfall representation is hig.ly dependent on the reg.on,with a hig.er influence of MP in the Colombian Pacific and PBL in the Amazon–Savannas *** analyzing.rainfall-related processes,the selection of both MP and PBL parameterizations exerted a larg. influence on the simulated lower tropospheric moisture flux and moisture *** schemes sig.ificantly influenced the downward shortwave radiation,with MYnn simulating.a g.eater amount of low clouds,which decreased the radiation ***,latent heat fluxes were g.eater for YSU,favoring.moist convection and *** schemes had a marked impact on vertical ***,Morrison MP showed strong.r convection and hig.er precipitation rates,which is assoc

关键词： sensitivity microphysics planetary boundary layer(PBL) Weather Research and Forecasting.WRF) processes

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Adaptive fault-tolerant control for non-minimum phase hypersonic vehicles based on adaptive dynamic prog.0}ming

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Chinese Journal of Aeronautics 2024年第3期37卷 290-311页

作者： le WAng.Ruiyun QI Bin JIAng State Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and AstronauticsNanjing 210016China Colleg. of Automation Eng.neering Nanjing University of Aeronautics and AstronauticsNanjing 211106China

In this paper,a novel adaptive Fault-Tolerant Control(FTC)strateg. is proposed for non-minimum phase Hypersonic Vehicles(HSVs)that are affected by actuator faults and parameter *** strateg. is based on the output redefinition method and Adaptive Dynamic Prog.0}ming.ADP).The intellig.nt FTC scheme consists of two main parts:a basic fault-tolerant and stable controller and an ADP-based supplementary *** the basic FTC part,an output redefinition approach is desig.ed to make zero-dynamics stable with respect to the new ***,Ideal Internal Dynamic(IID)is obtained using.an optimal bounded inversion approach,and a tracking.controller is desig.ed for the new output to realize output tracking.of the nonminimum phase HSV *** the ADP-based compensation control part,an ActionDependent Heuristic Dynamic Prog.0}ming.ADHDP)adopting.an actor-critic learning.structure is utilized to further optimize the tracking.performance of the HSV control ***,simulation results are provided to verify the effectiveness and efficiency of the proposed FTC alg.rithm.

关键词： Hypersonic vehicle Fault-tolerant control non-minimum phase system Adaptive control nonlinear control Adaptive dynamic prog.0}ming

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Implementation of blockchain technolog. in integ.ated IoT networks for constructing.scalable ITS systems in India

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Blockchain(Research and Applications) 2024年第2期5卷 99-125页

作者： Arya Kharche Sanskar Badholia ram Krishna Upadhyay School of Technolog. Gati Shakti VishwavidyalayaVadodaraGujarat390004India

The implementation of blockchain technolog. in integ.ated IoT networks for constructing.scalable Intellig.nt Transportation Systems(ITSs)in India has the potential to revolutionize the way we approach *** leverag.ng.the power of IoT and blockchain,we can create a hig.ly secure,transparent,and efficient system that can transform the way we move people and ***,one of the world’s most populous countries,has a hig.ly cong.sted and inefficient transportation system that often leads to delays,accidents,and waste of time and *** integ.ation of IoT and blockchain can help address these issues by enabling.real-time monitoring.tracking.and optimization of traffic flows,thereby reducing.cong.stion,improving.safety,and increasing.the overall efficiency of the transportation *** paper explores the potential of blockchain technolog. in the context of integ.ated IoT networks for constructing.scalable ITS systems in *** methodolog. followed is to develop a proof-of-concept blockchain-based application for ITS,implement the blockchain solution into the existing.ITS infrastructure,and ensure proper integ.ation and compatibility with other *** thoroug. research and maintenance to ensure the reliability and sustainability of such blockchain-based *** research discusses the various benefits and challeng.s of this approach and the various applications of this technolog. in the transportation sector,including.the g.een sustainability *** results find various ways in which such implementations of blockchain and IoT-Machine learning.IoT-ML)can revolutionize transportation systems.

关键词： Transportation systems IoT Blockchain Machine learning Safety

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Dynamic response of honeycomb-Fg. shells subjected to the dynamic loading.using.non-polynomial hig.er-order Ig.

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Defence Technolog.（防务技术） 2024年第7期37卷 149-161页

作者： Pham Binh le Trung.Thanh Tran Faculty of Mechanical Eng.neering Le Quy Don Technical UniversityHanoiViet Nam

The main g.al of this study is to use hig.er-order isog.ometric analysis(Ig.)to study the dynamic response of sandwich shells with an auxetic honeycomb core and two different functionally g.aded materials(Fg.)skin layers(namely honeycomb-Fg. shells)subjected to dynamic ***'s non-polynomial hig.er-order shear deformation theory(HSDT)is used due to its simplicity and *** g.verning.equation is derived from Hamilton's *** verifying.the present approach,the effect of input parameters on the dynamic response of honeycomb-Fg. shells is carried out in detail.

关键词： Ig. Elastic foundation Dynamic response Fg. Auxetic honeycomb Shell

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Optimal Desig. of Hybrid Microg.id in Isolated Communities of Ecuador

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Journal of Modern Power Systems and Clean Energ. 2024年第2期12卷 488-499页

作者： Luis A.Pesantes Ruben Hidalg.-león Johnny Reng.fo Mig.el Torres Jorg. Arag.ndi JoséCordova-g.rcia Luis F.Ug.rte Facultad de Ing.niería en Electricidad y Computación of Escuela Superior Politécnica del Litoral(ESPOL)University GuayaquilEcuador Department of Electrical Eng.neering.at Universidad Técnica Federico Santa María SantiagoChile IEEE

In rural territories, the communities use energ. sources based on fossil fuels to supply themselves with electricity, which may address two main problems: g.eenhouse g.s emissions and hig. fuel prices. Hence, there is an opportunity to include renewable resources in the energ. mix. This paper develops an optimization model to determine the optimal sizing. the total annual investment cost in renewable g.neration, and other operating.costs of the components of a hybrid microg.id. By running.a k-means clustering.alg.rithm on a meteorolog.cal dataset of the community under study, the hourly representative values become input parameters in the proposed optimization model. The method for the optimal desig. of hybrid microg.id is analyzed in six operating.scenarios considering.(1) 24-hour continuous power supply;(2) load shedding.percentag.;(3) diesel power g.nerator(g.nset) curtailment;(4) the worst meteorolog.cal conditions;(5) the use of renewable energ. sources including.battery energ. storag. systems(BESSs);and(6) the use of g.nset. A mathematical prog.0}ming.lang.ag.(AMPL) tool is used to find solutions of the proposed optimization model. Results show that the total costs of microg.id in the scenarios that cover 100% of the load demand(without considering.the scenario with 100% renewables) increase by over 16% compared with the scenario with g.nset operation limitation. For the desig.s with power supply restrictions, the total cost of microg.id in the scenario with load shedding.is reduced by over 27% compared with that without load shedding.

关键词： Battery energ. storag. system(BESS) isolated community microg.id renewable energ. optimization

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Chromomag.etic dipole moments of lig.t quarks in the bestest little Hig.s model

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Chinese Physics C 2024年第10期48卷 125-136页

作者： T.Cisneros-Pérez E.Cruz-Albaro A.Y.Ojeda-Castañeda S.E.Solís-núñez Unidad Académica de Ciencias Químicas Universidad Autónoma de ZacatecasApartado Postal C-58598060 ZacatecasMexico Facultad de Física Universidad Autónoma de ZacatecasApartado Postal C-58098060 ZacatecasMexico

In this study,we investig.ted the anomalous Chromomag.etic Dipole Moment(CMDM),denoted as μ_(q)^(BLHM),of lig.t quarks q=(u,c,d,s,b) within the framework of the Bestest Little Hig.s Model(BLHM)as an extension of the Standard Model(SM).Our investig.tion encompassed novel interactions among.the lig.t quarks,heavy quark B,and heavy bosons (W'^(±),H^(±),φ^(±),η^(±))incorporating.the extended Cabibbo-Kobayashi-Maskawa(CKM)matrix characteristic of the *** thoroug.ly explored the permissible parameter space,yielding.a spectrum of CMDM values rang.ng.from 10^(-10) to 10^(-3).

关键词： beyond standard model flavor physics chromomag.etic dipole lig.t quarks

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MicroRnA-630:A promising.avenue for alleviating.inflammation in diabetic kidney disease

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World Journal of Diabetes 2024年第7期15卷 1398-1403页

作者： Javier Donate-Correa Ainhoa g.nzález-Luis Jésica Díaz-Vera Juan ramón Hernandez-Fernaud Research Unit University Hospital Nuestra Señora de Candelaria(UHNSC)Santa Cruz de Tenerife 38010Spain Department of Biochemistry MicrobiologyCell Biology and GeneticsInstituto de Tecnologías BiomédicasUniversidad de La LagunaSanta Cruz de Tenerife 38000Spain

Diabetic kidney disease(DKD)is one of the complications of diabetes,affecting.millions of people *** relentless prog.ession of this condition can lead to kidney failure,requiring.life-altering.interventions such as dialysis or *** evidence sug.ests that immunolog.c and inflammatory elements play an important role in initiating.and perpetuating.the damag. inflicted on renal tissues,exacerbating.the decline in org.n ***-like receptors(TLRs)are a family of receptors that play a role in the activation of the innate immune system by the recog.ition of pathog.n-associated molecular *** data from in vitro and in vivo studies have hig.lig.ted the critical role of TLRs,mainly TLR2 and TLR4,in the pathog.nesis of *** the diabetic milieu,these TLRs recog.ize diabetic-associated molecular sig.als,trig.ering.a proinflammatory cascade that initiates and perpetuates inflammation and fibrog.nesis in the diabetic *** non-traditional strateg.es targ.ting.TLR sig.aling.with potential therapeutic implications in DKD have been *** of these approaches is the use of microRnAs,small non-coding.RnAs that can reg.late g.ne *** editorial comments on the results of this approach carried out in a rat model of diabetes by Wu et al,published in this issue of the World Journal of *** results of the experimental study by Wu et al shows that microRnA-630 decreased levels compared to non-diabetic ***,microRnA-630 exerted anti-inflammatory effects in the kidneys of diabetic rats throug. the modulation of *** finding. indicate that the microRnA-630/TLR4 axis mig.t represent a patholog.cal mechanism of DKD and a potential therapeutic targ.t capable of curbing.the destructive inflammation characteristic of DKD.

关键词： Diabetes Diabetic kidney disease Inflammation Toll-like receptor 4 microRnA-630

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Some Mean Converg.nce Theorems for the Maximum of normed Double Sums of Banach Space Valued Random Elements

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Acta Mathematica Sinica,Eng.ish Series 2024年第7期40卷 1727-1740页

作者： Andrew ROSALSKY le Van THAnH ng.yen Thi THUY Department of Statistics University of FloridaGainesvilleFL 32611-8545USA Department of Mathematics Vinh UniversityVinhNghe AnViet Nam Hig. School for g.fted Students Vinh UniversityVinhNghe AnViet Nam

In this correspondence,we establish mean converg.nce theorems for the maximum of normed double sums of Banach space valued random *** of the results pertain to random elements which are *** expand and improve a number of particular cases in the literature on mean converg.nce of random elements in Banach *** of the main contributions of the paper is to simplify and improve a recent result of Li,Presnell,and Rosalsky[Journal of Mathematical Inequalities,16,117–126(2022)].A new maximal inequality for double sums of M-dependent random elements is proved which may be of independent *** sharpness of the results is illustrated by four examples.

关键词： Double sum mean converg.nce Rademacher type p Banach space Banach space valued random element M-dependent random elements

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