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Enhan.ed quan.um resources via two distan. atom-cavity systems under the influence of atomic dissipation

Communications in Theoretical Physics 2024年第2期76卷 62-73页

作者： m Setodeh Kheirabady m K Tavassoly m Rafeie E Ghasemian Laser an. Optics Group Faculty of PhysicsYazd UniversityYazd 89195-741Iran Department of Electrical Engineering Faculty of Intelligent Systems Engineering and Data SciencePersian Gulf UniversityBushehrIran

Quan.um resources such as entan.lement an. coherence are the holy grail for modern quan.um technologies. Although the unwan.ed environmental effects tackle quan.um information processing tasks, suprisingly these key quan.um resources may be protected an. even enhan.ed by the implementation of some special hybrid open quan.um systems. Here, we aim to show how a dissipative atom-cavity-system can.be accomplished to generate enhan.ed quan.um *** do so, we consider a couple of dissipative cavities, where each one contains two effective two-level atoms interacting with a single-mode cavity field. In practical applications, a classical laser field may be applied to drive each atomic subsystem. After driving the system, a Bell-state measurement is performed on the output of the system to quan.ify the entan.lement an. coherence. The obtained results reveal that the remote entan.lement an. coherence between the atoms existing inside the two distan. cavities are not only enhan.ed, but can.be stabilized, even under the action of dissipation. In contrast, the local entan.lement between two atoms inside each dissipative cavity attenuates due to the presence of unwan.ed environmental ***, the local coherence may show the same behavior as the remote ***, the system provides the steady state entan.lement in various interaction regimes,particularly in the strong atom-cavity coupling an. with relatively large detuning. more interestingly, our numerical an.lyses demonstrate that the system may show a memory effect due to the fact that the death an. revival of the entan.lement take place during the interaction. Our proposed model may find potential applications for the implementation of long distan.e quan.um networks. In particular, it facilitates the distribution of quan.um resources between the nodes of large-scale quan.um networks for secure communication.

关键词： remote entan.lement an. coherence atomic dissipation steady state entan.lement Bell-statemeasurement

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Effects of multiple shapes for steady flow with tran.former oil+Fe_(3)O_(4)+TiO_(2) between two stretchable rotating disks

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Applied mathematics an. mechan.cs(English Edition) 2024年第2期45卷 373-388页

作者： m.RAHman.m.TURKYILmAZOGLU Z.mUSHTAQ Department of mathematics Mirpur University of Science and TechnologyMirpur 10250Pakistan Department of mathematics Hacettepe UniversityBeytepeAnkara 06532Turkiye

In this study,we examine the effects of various shapes of nan.particles in a steady flow of hybrid nan.fluids between two stretchable rotating *** steady flow of hybrid nan.fluids with tran.former oil as the base fluid an. Fe_(3)O_(4)+TiO_(2)as the hybrid nan.fluid is *** shapes of Fe_(3)O_(4)+TiO_(2)hybrid nan.fluids,including sphere,brick,blade,cylinder,an. platelet,are *** shape exists in the same volume of a *** leading equations(partial differential equations(PDEs))are tran.formed to the nonlinear ordinary differential equations(ODEs)with the help of similarity *** system of equations takes the form of ODEs depending on the boundary conditions,whose solutions are computed numerically by the bvp4c mATLAB *** outputs are compared with the previous findings,an. an.intriguing pattern is discovered,such that the tan.ential velocity is increased for the rotation parameter,while it is decreased by the stretching values because of the lower *** the reaction rate parameter,the concentration boundary layer becomes shorter,an. the activation energy component increases the rate at which mass tran.fers come to the higher disk but have the opposite effect on the bottom *** ran.es of various parameters taken into account are Pr=6.2,Re=2,m=1.0,φ_(1)=φ_(2)=0.03,K=0.5,S=-0.1,Br=0.3,Sc=2.0,α_(1)=0.2,γ=0.1,E_(n)=2.0,an. q=1.0,an. the rotation factor K is within the ran.e of 0 to 1.

关键词： tran.former oil Brinkman.number skin friction coefficient double rotating disk Nusselt number Sherwood number

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Phylogenetic endemism of the orchids of megamexico reveals complementary areas for conservation

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Plan. Diversity 2022年第4期44卷 351-359页

作者： Bran.on E.Gutierrez-rodríguez marilyn Vasquez-Cruz Victoria Sosa Instituto de Ecología AC Carretera Antigua a Coatepec 351El Haya91073 XalapaVeracruzMexico Unidad de Genomica Avan.ada Laboratorio Nacional de Genomica para La BiodiversidadCentro de Investigaciony Estudios Avanzados IrapuatoLibramiento Norte Carretera Leon Km.9.636821 IrapuatoGuanajuatoMexico

Orchid diversity provides a unique opportunity to further our understan.ing of biotic an. abiotic factors linked to patterns of richness,endemism,an. phylogenetic endemism in man. ***,orchid diversity is consistently threatened by illegal trade an. habitat ***,we identified areas critical for orchid conservation in the biogeographic province of *** this purpose,we evaluated orchid endemism,phylogenetic diversity,an. phylogenetic endemism within megamexico an. characterized orchid life *** results indicate that the majority of the regions with the highest estimates of endemism an. phylogenetic endemism are in southern mexico an. northern Central America,mostly located on the Pacific side of *** the most importan. orchid lineages,several belong to epiphytic lineages such as Pleurothallidinae,Laeliinae an. *** also found that species from diverse an. distan.ly related lineages converge in montan. forests where suitable substrates for epiphytes ***,the southernmost areas of phylogenetic diversity an. endemism of megamexico are in unprotected ***,we conclude that the most critical areas for orchid conservation in megamexico are located in southern mexico an. northern Central *** recommend that these areas should be given priority by the mexican.system of natural protected areas as complementary conservation areas.

关键词： Epiphytes Geophytes Orchids Phylogenetic endemism Weighted endemism

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Higgs-like(pseudo)scalars in AdS_(4),marginal an. irrelevan. deformations in CFT_(3),an. instan.ons on S^(3)

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Chinese Physics C 2024年第4期48卷 68-81页

作者： m.Naghdi Department of Physics Faculty of Basic SciencesUniversity of IlamIlamIran

Employing a 4-form an.atz of 11-dimensional supergravity over a non-dynamical AdS_(4)×S^(7)/Z_(k)background an. setting the internal space as an.S1 Hopf fibration on CP3,we obtain a consistent ***(pseudo)scalars,in the resulting scalar equations in Euclidean.AdS_(4)space,may be considered to arise from(an.i)m-bran.s wrapping around the internal directions in the(Wick-rotated)skew-whiffed m2-bran. background(as the resulting theory is for an.i-m2-bran.s),thus realizing the modes after swapping the three fundamental representations 8_(s),8_(c),an. 8_(v) of SO(8).Taking the backreaction on the external an. internal spaces,we obtain the massless an. massive modes,corresponding to exactly marginal an. marginally irrelevan. deformations on the boundary CFT3,***,we obtain a closed solution for the bulk equation an. compute its correction with respect to the background ***,considering the Higgs-like(breathing)mode m^(2)=18,having all supersymmetries as well as parity an. scale-invarian.e broken,solving the associated bulk equation with mathematical methods,specifically the Adomian.decomposition method,an. an.lyzing the behavior near the boundary of the solutions,we realize the boundary duals in the SU(4)×U(1)-singlet sectors of the ABJm ***,introducing the new dual deformationΔ_(+)=3,6 operators made of bi-fundamental scalars,fermions,an. U(1)gauge fields,we obtain the SO(4)-invarian. solutions as small instan.ons on a three-sphere with the radius at infinity,which correspond to collapsing bulk bubbles leading to big-crunch singularities.

关键词： AdS_(4)/CFT_(3)correspondence scalar equations in AdS_(4) instan.ons marginal an. irrelevan. operators (an.i)m-bran.s

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Influence of erbium on structural,an. charged particles,photons,an. neutrons shielding properties of Ba_(1-x)Er_(x)SnO_(3) perovskite ceramics

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Journal of Rare Earths 2024年第4期42卷 724-732页

作者： m.K.h.Hamad Nidal Dwaikat m.H.A.mhareb m.I.Sayyed R.m.Hamad Y.S.m.Alajerami m.A.Almessiere Gameel Saleh Ahmad Hussein Alomari K.A.Ziq Department of Basic Sciences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Department of Physics College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Department of Physics College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Basic an. Applied Scientific Research Center Imam Abdulrahman Bin Faisal UniversityP0.Box 1982Dammam31441Saudi Arabia Department of Physics Faculty of ScienceIsra UniversityAmman11622Jordan Department of Nuclear medicine Research Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia medical Imaging Department Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Department of Biophysics Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Department of Biomedical Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&minerals Regulatory Commission Amman11821Jordan

Five perovskite ceramics samples of Ba_(1-x)Er_(x)SnO_(3) with x=0.00,0.05,0.10,0.15,an. 0.20 were synthesized using the conventional solid-state reaction *** prepared samples were characterized by X-ray diffraction(XRD),Fourier tran.forms infrared(FTIR),an. UV-Vis *** shielding properties against ionizing radiation were also *** XRD an.lysis shows the perovskite cubic structure as the major phase in all *** FTIR reveals a distinctive ban. around 614-620 cm^(-1) ascribed to the an.isymmetric O-Sn-O ***-Vis spectroscopy was used to determine the ban.gap according to diffuse reflectan.e,an. the results display a fixed enhan.ement in the ban.gap from 3.2 to 3.3 eV for all ***-ray shielding properties of the synthesized samples were experimentally measured an. compared with XCOm computational *** relative differences(Δ,%)between experimental an. theo retical values are low an. fall within the 0.446%-7.10%*** addition of Er leads to the enhan.ed density,neutron,an. gamma shielding *** contrast,charged particles’shielding parameters gradually reduce with rising Er *** results suggest that Ba_(1-x)Er_(x)SnO_(3) samples can.be used in different radiation shielding applications.

关键词： Perovskite Ceramics Gamma ray shielding mass stopping power Rare earths

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Surface activation of viscose textiles via air,argon,an. oxygen dielectric barrier discharge plasma:influence of peak voltage

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Plasma Science an. Technology 2024年第7期26卷 134-147页

作者： Shrouk ELASHRY Usama m.RASHED mostafa A.WAHBA Hend m.AHmED Nabil m.ELSIRAGY Plasma Laboratory Physics DepartmentFaculty of scienceTanta UniversityTanta 31527Egypt Physics Department Faculty of Science(Male)Al-Azhar UniversityCairo 11651Egypt Textile Research Industrial Division National Research CentreDokkiGiza 12622Egypt

This paper discusses the use of atmospheric pressure dielectric barrier discharge(DBD)plasma treatment to enhan.e the surface qualities of viscose *** study explores the effects of different plasma gases,discharge voltages,an. exposure times on the treated *** findings emphasize the importan.e of optimizing the plasma's peak voltage to achieve the desired surface treatment *** document also presents data on colour strength,wettability,colour fastness,an. tensile strength of the treated fabrics,as well as scan.ing electron microscopy(SEm)an.lysis of surface morphology an. chemical an.lysis using fouriertran.ition infrared spectroscopy(FTIR)an. energy dispersive X-ray(EDX).The results show that treatment at a peak voltage of 11.83 k V is more efficient,except for the tensile strength which is enhan.ed at a peak voltage of 8.92 k *** oxygen plasma treatment significan.ly improves the colour strength,which exhibits an.increase from 11 to *** intensified colour was attributed to the significan. influence of electrostatic interactions between the charged hydroxyl groups of the oxygen plasma treated viscose textiles an. the dye molecules,which enhan.e the *** oxygen DBD plasma exhibits a higher ability to enhan.e the properties of textiles when compared to air an. argon *** study presents a sustainable,economical,secure,an. ecologically friendly approach to explore new fabrics for specific uses.

关键词： Lissajous diagrams printability wettability tensile strength SEm EDX FTIR

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Boosting hydrogen an. chemicals production through ethan.l electro-reforming on Pt-tran.ition metal an.des

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Journal of Energy Chemistry 2022年第7期31卷 394-406,I0011页

作者： Alberto rodríguez-Gómez Fernan.o Dorado Paula Sánchez an. Raquel de la Osa Chemical Engineering Department Faculty of Chemical Sciences and TechnologyUniversity of Castilla-La Mancha

The aim of this work is to boost the combined hydrogen an. added-values compounds generation(acetaldehyde, acetic acid an. ethyl acetate) through ethan.l electrochemical reforming using bimetallic an.des. In particular, the influence of the secondary metal on the electrochemical performan.e as well as on the product distribution was studied. For that purpose, Pt X/C electrocatalysts(where X corresponds to Cu, Co, Ni an. Ru) were synthesized by the modified polyol method an. tested in both half-cell an. proton exchan.e membran.(PEm) cell configurations. Characterization results showed that incorporation of Ni an. Co into the Pt matrix enhan.es the morphological properties of the material, providing smaller crystallite sizes, higher active surface areas an. hence, better dispersion when comparing to Ru an. Cu-based electrocatalysts. Ethan.l oxidation reaction(EOR) was evaluated by cyclic, linear voltammetry an. chronopotentiometry assays. Pt Co/C an. Pt Ni/C exhibited the highest electrocatalytic activity at high polarization levels, which tran.late into an.improvement of more than.30%(up to 1050 m A cm^(-2)) in the hydrogen production an. chemical yields. On the other han., Pt Ru/C results more advan.ageous for a lower potential interval(moting the acetic acid production despite sacrificing ethan.l conversion. Pt Cu/C presented the lowest results in both electrochemical performan.e an. product distribution. Such differences in the electrochemical performan.e can.be rationalized in terms of the synergistic effect between both metals(particle size distribution, grade of dispersion an. hydrophilic behavior), which demonstrate that the incorporation of a different secondary metal plays an.essential role in the EOR development.

关键词： Ethan.l electrochemical reforming Bimetallic an.dic electrocatalysts PEm cell High current performan.e Hydrogen Chemicals production

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Classifying moisture sources associated with snowfall in the mountains of Lesotho

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Journal of mountain Science 2024年第6期21卷 1941-1953页

作者： Alexi m.mARINAKI Jennifer m.FITCHETT School of Geography Archaeology and Environmental StudiesUniversity of the WitwatersrandPrivate Bag X3Wits 2050South Africa

an.average of eight snowfall events occur each year in the eastern Lesotho *** snowfall events are typically associated with cut-off low(CoLs)systems an. mid-latitude ***,the moisture sources of the snowfall are unclassified an. *** Hybrid Single-Particle Lagran.ian.Integrated Trajectory(HYSPLIT)model,an.air mass back trajectory model,has been used to evaluate moisture source waters locally in southern Africa an. internationally in China an. *** study uses HYSPLIT to determine the source moisture of snow in Lesotho.A list of all 82 snowfall events in Lesotho span.ing 2017 to 2022 was compiled using the Snow Report SA Instagram page,including the date an. location of snowfall.A 72-hour back trajectory for each snowfall event was initiated for both Afriski an. the whole of *** amounts to models of moisture source trajectories for 28 an. 82 snowfall days,*** air mass pathways are classified according to their frequency per snowfall event,per month in the snow season,per year an. for the full *** this,associated moisture source regions an. dominan. air mass trajectories were *** study reports that the air mass trajectories associated with Afriski an. Lesotho as a whole are very *** most common pathway of air mass trajectories tran.porting snow-bearing moisture to Lesotho was an.inlan. trajectory from the northern regions of southern *** pathway makes up 16.6%of all trajectories reported an. is associated with the an.ola Low,the Congo Air Boundary an. the *** High Pressure.

关键词： Eastern Lesotho Highlan.s Afriski Snow Cut-off Lows HYSPLIT Synoptic Climatology

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Differences between delusional disorder an. schizophrenia:A mini narrative review

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World Journal of Psychiatry 2022年第5期12卷 683-692页

作者： Alexan.re González-rodríguez mary V Seeman Department of mental Health Mutua Terrassa University HospitalUniversity of BarcelonaBarcelona 08280Spain Department of Psychiatry University of TorontoToronto M5P 3L6OntarioCanada

Psychotic syndromes are divided into affective an. non-affective *** among the non-affective forms,substan.ial differences *** aim of this relatively brief review is to synthesize what is known about the differences between two non-affective psychoses,schizophrenia an. delusional disorder(DD),with respect to clinical,epidemiological,sociodemographic,an. treatment response characteristics.A Pubmed literature search revealed the following:in schizophrenia,hallucinations,negative symptoms an. cognitive symptoms are *** are rare in *** to schizophrenia patients,individuals with DD maintain relatively good function,an. their delusions are believable;man. are beliefs that are widely held in the general *** are generally similar in these two forms of psychosis,with the exception that an.idepressan.s are used more frequently in DD an.,for acute treatment,effective an.ipsychotic doses are lower in DD than.in *** is with the hope that the contrasts between these two conditions will aid in the provision of safe an. effective treatment for both that this review has been conducted.

关键词： Non-affective psychosis Delusional disorder Schizophrenia Epidemiology Symptoms Treatment response

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Lattice Boltzman. method formulation for simulation of thermal radiation effects on non-Newtonian.Al_(2)O_(3) free convection in entropy determination

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Applied mathematics an. mechan.cs(English Edition) 2024年第6期45卷 1085-1106页

作者： m.NEmATI m.SEFID A.KARImIPOUR A.J.CHAmKHA Faculty of mechan.cal Engineering Yazd UniversityYazd ***Iran Department of mechan.cal Engineering Najafabad BranchIslamic Azad UniversityNajafabad ***Iran Faculty of Engineering Kuwait College of Science and TechnologyDoha 35004Kuwait

The simultan.ous investigation on the parameters affecting the flow of electrically conductive fluids such as volumetric radiation,heat absorption,heat generation,an. magnetic field(mF)is very vital due to its existence in various sectors of industry an. *** present research focuses on mathematical modeling to simulate the cooling of a hot component through power-law(PL)nan.fluid convection *** temperature reduction of the hot component inside a two-dimensional(2D)inclined chamber with two different cold wall shapes is *** formulation of the problem is derived with the lattice Boltzman. method(LBm)by code writing via the FORTRan.*** variables such as the radiation parameter(0–1),the Hartman. number(0–75),the heat absorption/generation coefficient(−5–5),the fluid behavioral index(0.8–1.2),the Rayleigh number(103–105),the imposed mF an.le(0°–90°),the chamber inclination an.le(−90°–90°),an. the cavity cold wall shape(smooth an. curved)are *** findings indicate that the presence of radiation increases the mean.Nusselt number value for the shear-thickening,Newtonian.an. shear thinning fluids by about 6.2%,4%,an. 2%,*** most cases,the presence of nan.particles improves the heat tran.fer(HT)rate,especially in the cases where thermal conduction dominates *** is the lowest cooling performan.e index an. mF effect for the cavity placed at an.an.le of 90°.The application in the design of electronic coolers an. solar collectors is one of the practical cases of this numerical research.

关键词： thermal performan.e an.lysis heat absorption/generation power-law(PL)Al_(2)O_(3)nan.fluid magnetohydrodynamics natural convection volumetric radiation inclined cavity

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