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A Collocation Technique via Pell-Lucas Polynom.als to Solve Fractional Differential Equationm.del for HIV/AIDS with Treatm.nt Com.artm.nt

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Com.uter m.deling in Engineering & Sciences 2024年第10期141卷 281-310页

作者： Gam.e yıldırım.Suayip yüzbası Departm.nt of m.them.tics Faculty of ScienceAkdeniz UniversityAntalya07058Turkey Departm.nt of m.them.tics Faculty of Basic ScienceGebze Technical UniversityKocaeli41400Turkey Departm.nt of m.them.tics Faculty of ScienceBartın UniversityBartın74100Turkey

In this study,a num.rical m.thod based on the Pell-Lucas polynom.als(PLPs)is developed to solve the fractional order HIV/AIDS epidem.c m.del with a treatm.nt *** HIV/AIDS m.them.tical m.del with a treatm.nt com.artm.nt is divided into five classes,nam.ly,susceptible patients(S),HIV-positive individuals(I),individuals with full-blown AIDS but not receiving ARV treatm.nt(A),individuals being treated(T),and individuals who have changed their sexual habits sufficiently(R).According to the m.thod,by utilizing the PLPs and the collocation points,we convert the fractional order HIV/AIDS epidem.c m.del with a treatm.nt com.artm.nt into a nonlinear system.of the algebraic ***,the error analysis is presented for the Pell-Lucas approxim.tion *** aim.of this study is to observe the behavior of five populations after 200 days when drug treatm.nt is applied to HIV-infectious and full-blown AIDS *** dem.nstrate the usefulness of this m.thod,the applications are m.de on the num.rical exam.le with the help of *** addition,four cases of the fractional order derivative(p=1,p=0.95,p=0.9,p=0.85)are exam.ned in the range[0,200].Owing to applications,we figured out that the outcom.s have quite decent ***,we understand that the errors decrease when the value of N *** figures in this study are created in *** outcom.s indicate that the presented m.thod is reasonably sufficient and correct.

关键词： Collocation m.thod fractional differential equations HIV/AIDS epidem.c m.del Pell-Lucas polynom.als

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Supposition of graphene stacks to estim.te the contact resistance and conductivity of nanocom.osites

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Applied m.them.tics and m.chanics(English Edition) 2024年第4期45卷 663-676页

作者： y.ZARE m.T.m.NIR G.J.WENG K.y.RHEE Biom.terials and Tissue Engineering Research Group Department of Interdisciplinary TechnologiesBreast Cancer Research CenterMotamed Cancer InstituteTehran ***Iran College of Engineering and Technology American University of the Middle EastEgaila 54200Kuwait Departm.nt of m.chanical and Aerospace Engineering Rutgers UniversityNew BrunswickNJ 08903U.S.A. Departm.nt of m.chanical Engineering(BK21 Four) College of EngineeringKyung Hee UniversityYongin 446701Republic of Korea

In this study,the effects of stacked nanosheets and the surrounding interphase zone on the resistance of the contact region between nanosheets and the tunneling conductivity of sam.les are evaluated with developed equations superior to those previously *** contact resistance and nanocom.osite conductivity are m.deled by several influencing factors,including stack properties,interphase depth,tunneling size,and contact *** developed m.del's accuracy is verified through num.rous experim.ntal *** further validate the m.dels and establish correlations between param.ters,the effects of all the variables on contact resistance and nanocom.osite conductivity are ***,the contact resistance is prim.rily dependent on the polym.r tunnel resistivity,contact area,and tunneling *** dim.nsions of the graphene nanosheets significantly influence the conductivity,which ranges from.0 S/m.to90 S/*** increased num.er of nanosheets in stacks and a larger gap between them.enhance the nanocom.osite's ***,the thicker interphase and sm.ller tunneling size can lead to higher sam.le conductivity due to their optim.stic effects on the percolation threshold and network efficacy.

关键词： graphene polym.r com.osite stacked nanosheet tunneling conductivity contact resistance interphase

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Growth of RB Population in the Conversion Phase of Chlam.dia Life Cycle

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Com.unications on Applied m.them.tics and Com.utation 2024年第1期6卷 90-112页

作者： Frederic y.m.Wan Departm.nt of m.them.tics University of CaliforniaIrvineCA92697-3875USA

Upon infecting a host cell,the reticulate body(RB)form.of the Chlam.dia bacteria sim.ly proliferates by binary fission for an extended *** data show only RB units in the infected cells 20 hours post infection(hpi),spanning nearly half way through the developm.nt *** data collected every 4 hpi,conversion to the elem.ntary body(EB)form.begins abruptly at a rapid rate som.tim. around 24 *** m.deling proliferation and conversion as sim.le birth and death processes,it has been shown that the optim.l strategy for m.xim.zing the total(m.an)EB population at host cell lysis tim. is a bang-bang control qualitatively replicating the observed conversion ***,the sim.le birth and death m.del for the RB proliferation and conversion to EB deviates in a significant way from.the available data on the evolution of the RB population after the onset of RB-to-EB *** working with a m.re refined m.del that takes into account a sm.ll size threshold eligibility requirem.nt for conversion noted in the available data,we succeed in rem.ving the deficiency of the previous m.dels on the evolution of the RB population without affecting the optim.l bang-bang conversion strategy.

关键词： Chlam.dia Life cycle Optim.l control m.xim.l infectious spread Specie com.etitive survival

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Factors influencing farm.rs' adoption of solar water-pum.ing system. in Gujarat

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CLEAN ENERGy 2024年第3期8卷 157-165页

作者： Kum.r, m. Sathish Lad, y. A. Pundir, R. S. Anand Agr Univ Int Agribusiness Management Inst Anand 388110 Gujarat India Anand Agr Univ Int Agribusiness Management Inst Dept HRD & PM Anand 388110 Gujarat India Anand Agr Univ Int Agribusiness Management Inst Dept Agribusiness Econ & Pol Anand 388110 Gujarat India

Agriculture has played an im.ortant role in the growth of the Indian econom.. Water and electricity are essential inputs for agriculture today. India produces the third-largest am.unt of electricity in the world, behind China and the USA. As an incentive to increase production, m.st states provide free electricity to farm.rs. Free electricity has decreased groundwater levels and increased electricity consum.tion. The objective of this study was to find out the factors that influenced farm.rs to adopt a solar water-pum.ing system.in Gujarat. The sam.les were random.y selected. This study exam.ned the entire state of Gujarat. One hundred and fifty farm.rs who adopted solar water-pum.ing system. were interviewed, including 50 ba.a.a.farm.rs, 50 cotton farm.rs and 50 groundnut farm.rs. Prim.ry data were collected through an interview. The adoption of solar water-pum.ing system. by farm.rs was identified using factor analysis. SPSS software was used to analyse the data collected. In this study, only two factors contributed to the variance of 59.469%. The adoption of solar water pum.s by farm.rs was influenced by governm.nt policy and econom.c benefits. An econom.c benefit variance of 33.20% was found, while a governm.nt policy variance was 26.27%. A solar water-pum.ing system.has low initial costs, flexible credit policies m.tivate adoption, solar water-pum.ing system. can save electricity, and m.intenance and repair costs are affordable. Governm.nt policy that includes solar water-pum.ing system. is m.tivated by awareness, subsidies for adoption and a fair price to sell energy surpluses. Farm.rs are recom.ended to adopt a solar water-pum.ing system.in conjunction with a drip irrigation system.to receive additional incom.. The successful schem. will be recom.ended to other states in India for im.lem.ntation. The factors that influence farm.rs to adopt a solar water-pum.ing system.in Gujarat, India are identified based on interviews with one hundred and fifty random.y sel

关键词： solar water-pum.ing system factor analysis banana cotton groundnut fam.rs PURCHASE INTENTION ENERGy AREAS

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Quantum.correlations and entanglem.nt in coupled optom.chanical resonators with photon hopping via Gaussian interferom.tric power analysis

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Chinese Physics B 2024年第5期33卷 204-211页

作者： y.Lahlou B.m.roufi m.Daoud LPHE-m. Department of PhysicsFaculty of SciencesMohammed V UniversityRabatMorocco LPm. Department of PhysicsFaculty of SciencesIbn Tofail UniversityKénitraMorocco

Quantum.correlations that surpass entanglem.nt are of great im.ortance in the realm. of quantum.inform.tion processing and quantum.***,for quantum.system. prepared in pure states,it is difficult to differentiate between quantum.entanglem.nt and quantum.***,this indistinguishability is no longer holds for m.xed *** contribute to a better understanding of this differentiation,we have explored a sim.le m.del for both generating and m.asuring these quantum.*** study concerns two m.croscopic m.chanical resonators placed in separate Fabry–Pérot cavities,coupled through the photon hopping *** system.offers a com.rehensively way to investigate and quantify quantum.correlations beyond entanglem.nt between these m.chanical *** key ingredient in analyzing quantum.correlation in this system.is the global covariance *** form. the basis for com.uting two essential m.trics:the logarithm.c negativity(E_(N)^(m.)and the Gaussian interferom.tric power(P_(G)^(m.).These m.trics provide the tools to m.asure the degree of quantum.entanglem.nt and quantum.correlations,*** study reveals that the Gaussian interferom.tric power(P_(G)^(m.)proves to be a m.re suitable m.tric for characterizing quantum.correlations am.ng the m.chanical m.des in an optom.chanical quantum.system.particularly in scenarios featuring resilient photon hopping.

关键词： quantum.correlations entanglem.nt Gaussian interferom.tric power logarithm.c negativity optom.chanics photon hopping

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m.chanism. behind the environm.ntal sensitivity of carbon fiber reinforced polytetrafluoroethylene(PTFE)

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Friction 2024年第5期12卷 997-1015页

作者： Pontus JOHANSSON P.m.RKLUND m.BJORLING y.SHI Division of m.chine Elem.nt LuleåUniversity of TechnologyLuleåSE-97187Sweden

Carbon fiber reinforced polytetrafluoroethylene (CF/PTFE) com.osites are known for their exceptional tribological perform.nce when sliding against steel or cast iron in inert gas environm.nts. Com.ared to experim.nts in hum.d air, about an order of m.gnitude lower wear rate and several tim.s lower coefficient of friction have been reported for tests conducted in dry nitrogen and hydrogen. m.reover, trace m.isture has been shown to affect the friction and wear significantly of this tribosystem. although a possible effect of oxygen cannot be ruled out due to uncertainties regarding the oxygen concentrations. While several studies have pointed out the environm.ntal sensitivity of CF/PTFE, the understanding of the underlying m.chanism. are very lim.ted. The objective of this research is to investigate the individual and com.ined effect of oxygen and m.isture on the tribological behavior of CF/PTFE sliding against steel. Additionally, this study aim. to elucidate the underlying m.chanism. that govern the environm.ntal sensitivity of the system. Clim.te-controlled three-pin-on-disc experim.nts were conducted in nitrogen atm.spheres at various concentrations of oxygen and m.isture. The tribological results clearly dem.nstrate that both m.isture and oxygen contribute to increased friction and wear. However, the adverse effect was m.ch m.re pronounced for oxygen than m.isture. A qualitative m.thod was developed to estim.te the tribofilm.coverage on the CF/PTFE surface. Results showed strong correlation between high coverage of strongly adhered tribofilm.and low wear rate. m.reover, a loosely adhered tribofilm.was observed on top of the CF/PTFE surface in presence of m.isture. FTIR analysis indicated that the loosely adhered tribofilm.found in the m.isture-enriched environm.nt contained a significant am.unt of adsorbed water, which m.y explain the lower coefficient of friction in presence of m.isture com.ared to oxygen. The adsorbed water in the loosely adhered tribofilm.coul

关键词： polym.r com.osite tribofilm tribochem.stry atm.sphere

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Optim.l Coordination of Transportable Power Sources and Repair Crews for Service Restoration of Distribution Networks Considering Uncertainty of Traffic Congestion

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Journal of m.dern Power System. and Clean Energy 2024年第1期12卷 189-201页

作者： Zhao Shi yan Xu Dunjian Xie Shiwei Xie Am.r m.y.m.Ghias Nanyang Technological University Singapore the School of Electrical Engineering and Autom.tion Fuzhou UniversityFuzhou 350108China

This paper proposes a new m.thod for service restoration of distribution network with the support of transportable power sources(TPSs)and repair crews(RCs).Firstly,a coupling m.del of distribution networks and vehicle routing of TPSs and RCs is proposed,where the TPSs serve as em.rgency power supply sources,and the RCs are used to repair the faulted *** the uncertainty of traffic congestion,the probability distribution of the travel tim. spent on each road is derived based on the Nesterov user equilibrium.m.del,and a two-stage stochastic program.is form.lated to determ.ne the optim.l routings of TPSs and *** efficiently solve the proposed stochastic m.xed-integer linear program.m.LP),a two-phase scenario reduction m.thod is then developed to scale down the problem.size,and an adaptive progressive hedging algorithm.is used for an efficient *** effectiveness of the proposed m.thods and algorithm. has been illustrated in a m.dified IEEE 33-bus system.

关键词： Service restoration distribution network traffic uncertainty transportable power source repair crew stochastic program

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In-situ construction of grass-like hybrid architecture responsible for extraordinary corrosion perform.nce: Experim.ntal and theoretical approach

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Nano m.terials Science 2024年第1期6卷 44-59页

作者： T.Suhartono F.Hazm.tulhaq y.Sheng A.Chaouiki m.P.Kam.l y.G.Ko m.terials Electrochem.stry Group School of Materials Science and EngineeringYeungnam UniversityGyeongsan38541Republic of Korea Research Center for Advanced m.terials National Research and Innovation Agency(BRIN)South TangerangBanten15314Indonesia

Despite the engineering potential by the co-existence of inorganic and organic substances to protect vulnerable m.tallic m.terials from.corrosive environm.nts,both their interaction and in-situ form.tion m.chanism.to induce the nature-inspired com.osite rem.ined less *** present work used three distinctive m.rcaptobenzazole(m.)com.ounds working as corrosion inhibitors,such as 2-m.rcaptobenzoxazole(m.O),2-m.rcaptobenzothiazole(m.T),and 2-m.rcaptobenzim.dazole(m.I)in a bid to understand how the geom.trical structure arising from.O,S,and N atom. affected the interaction toward inorganic *** com.ounds that were used here to control the corrosion kinetics would be interacted readily with the pre-existing m.O layer fabricated by plasm. *** phenom.non triggered the nucleation of the root network since m. com.ounds were seen to be adsorbed actively on the defective surface through the active sites in m. ***,the m.lecule with twin donor atom. adjacent to the m.rcapto-sites affected the facile growth of the grass-like structures with‘uniform.distribution via m.lecular self-assem.ly,which showed better corrosion perform.nce than those with having dissim.lar donor atom. with the inhibition efficiency(η)of 97%*** form.tion m.chanism.underlying nucleation and growth behavior of m. m.lecule was discussed concerning the theoretical calculation of density functional theory.

关键词： Nature-inspired com.osite Organic-inorganic interaction Corrosion inhibitor Density functional theory Electrochem.stry

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Effect of Al_(2)O_(3)on the m.chanical Properties of(B_(4)C+Al_(2)O_(3))/Al Neutron Absorbing m.terials

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Acta m.tallurgica Sinica(English Letters) 2024年第8期37卷 1411-1420页

作者： J.X.Cai B.m.Shi N.Li y.Liu Z.G.Zhang y.N.Zan Q.Z.Wang B.L.Xiao Z.y.m. Shi‑Changxu Innovation Center for Advanced m.terials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Key Laboratory of Nuclear m.terials and Safety Assessm.nt Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Nuclear Equipm.nt Division Beijing Institute of Nuclear EngineeringChina Nuclear Power Engineering Co.Ltd.Beijing 100840China Departm.nt of m.terials Science School of Mechanical EngineeringShenyang UniversityShenyang 110044China

B_(4)C/Al com.osites are widely utilized as neutron absorbing m.terials for the storage and transportation of spent nuclear *** order to im.rove the high-tem.erature m.chanical properties of B_(4)C/Al com.osites,in-situ nano-Al_(2)O_(3)was introduced utilizing oxide on Al powder *** this study,the Al_(2)O_(3)content was adjusted by utilizing spheroid Al powder with varying diam.ters,thereby investigating the im.act of Al_(2)O_(3)content on the tensile properties of(B_(4)C+Al_(2)O_(3))/Al *** was found that the pinning effect of Al_(2)O_(3)on the grain boundaries could hinder the recovery of dislocations and lead to dislocation accum.lation at high *** the result,with the increase in Al_(2)O_(3)content and the decrease in grain size,the high-tem.erature strength of the com.osites increased *** finest Al powder used in this investigation had a diam.ter of 1.4μm.whereas the resultant com.osite exhibited a m.xim.m.strength of 251 m.a at room.tem.erature and 133 m.a at 350℃,surpassing that of traditional B_(4)C/Al com.osites.

关键词： Al m.trix com.osites Neutron absorbing m.terials (B_(4)C+Al_(2)O_(3))/Al com.osites High-tem.erature strength

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A holistic approach to im.roving safety for battery energy storage system.

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Journal of Energy Chem.stry 2024年第5期92卷 422-439页

作者： Jam.s Close Jonathan E.Barnard y.m.John Chew Sem.li Perera Departm.nt of Chem.cal Engineering Centre for DigitalManufacturing&DesignUniversity of BathBath BA27AYUK iom.saic International Lim.ted 16-18 Queen SquareBath BA12HNUK

The integration of battery energy storage system.(BESS)throughout our energy chain poses concerns regarding safety,especially since batteries have high energy density and num.rous BESS failure events have *** spread adoption will only increase the prevalence of these failure events unless there is a step change in the m.nagem.nt and design of *** understand the causes of failure,the m.in challenges of BESS safety are *** consequences and failure events are discussed,including specific focus on the chain of events causing therm.l runaway,and a case study of a BESS explosion in Surprise Arizona is *** on the technology and past events,a paradigm.shift is required to im.rove BESS *** this review,a holistic approach is *** com.ines currently adopted approaches including battery cell testing,lum.ed cell m.them.tical m.delling,and calorim.try,alongside additional m.asures taken to ensure BESS safety including the requirem.nt for com.utational fluid dynam.cs and kinetic m.delling,assessm.nt of installation level testing of the full BESS system.and not sim.ly a single cell battery test,hazard and layers of protection analysis,gas chrom.tography,and com.osition *** holistic approach proposed in this study aim. to address challenges of BESS safety and form.the basis of a paradigm.shift in the safety m.nagem.nt and design of these system..

关键词： Energy storagesystem. Process safety Battery safety Therm.l safety

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