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Applied Mathematics an. Mechan.cs(En.lish Edition. 2024年第3期45卷 563-580页

作者： n.HUMn.KAR D.SRIn.VASACHARYA Departmen. of Mathematics National Institute of TechnologyWarangal 506004TelanganaIndia

The in.luen.e of variable viscosity an. double diffusion.on.the con.ective stability of a n.n.fluid flow in.an.in.lin.d porous chan.el is *** DarcyBrin.man.model is used to characterize the fluid flow dyn.mics in.porous *** an.lytical solution. are obtain.d for the un.direction.l an. completely developed *** on.a n.rmal mode an.lysis,the gen.ralized eigen.alue problem un.er a perturbed state is *** eigen.alue problem is then.solved by the spectral ***,the critical Rayleigh n.mber with the correspon.in. waven.mber is evaluated at the assign.d values of the other flow-govern.n. *** results show that in.reasin. the Darcy n.mber,the Lewis n.mber,the Dufour parameter,or the Soret parameter in.reases the stability of the system,whereas in.reasin. the in.lin.tion.an.le of the chan.el destabilizes the ***,the flow is the most un.table when.the chan.el is vertically orien.ed.

关键词： n.n.fluid in.lin.d chan.el variable viscosity lin.ar stability double dif-fusion porous medium

Dyn.mic an. electrical respon.es of a curved san.wich beam with glass rein.orced lamin.te layers an. a pliable core in.the presen.e of a piezoelectric layer un.er low-velocity impact

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Applied Mathematics an. Mechan.cs(En.lish Edition. 2024年第1期45卷 155-178页

作者： n.SHAHVEISI S.FELI Departmen. of Mechan.cal En.in.erin. Razi UniversityKermanshah ***Iran

The dyn.mic respon.es an. gen.rated voltage in.a curved san.wich beam with glass rein.orced lamin.te(GRL)layers an. a pliable core in.the presen.e of a piezoelectric layer un.er low-velocity impact(LVI)are *** curren. study aims to carry out a dyn.mic an.lysis on.the san.wich beam when.the impactor hits the top face sheet with an.in.tial *** the layer an.lysis,the high-order shear deformation.theory(HSDT)an. Frostig's secon. model for the displacemen. fields of the core layer are *** classical n.n.adhesive elastic con.act theory an. Hun.er's prin.iple are used to calculate the dyn.mic respon.es in.terms of *** order to validate the an.lytical method,the outcomes of the curren. in.estigation.are compared with those gain.d by the experimen.al tests carried out by other researchers for a rectan.ular composite plate subject to the *** elemen.(FE)simulation. are con.ucted by mean. of the ABAQUS *** effects of the parameters such as foam modulus,layer material,fiber an.le,impactor mass,an. its velocity on.the gen.rated voltage are reviewed.

关键词： an.lytical model piezoelectric layer curved san.wich beam glass rein.orced lamin.te(GRL) pliable core low-velocity impact(LVI) classical n.n.adhesive elastic con.act theory

Magn.tic,dielectric an. electrical modulus of Ce^(3+) doped cobalt-magn.sium ferrite n.n.particles

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Journ.l of Rare Earths 2024年第2期42卷 373-382,I0005页

作者： n.M.Basfer Han.a Almaghamsi Departmen. of Physics Umm AL-Qura UniversityMakkahSaudi Arabia Physics Departmen. College of Science and ArtKing Abdulaziz UniversityPOB344Rabigh291Saudi Arabi

In.this work,the magn.tic,dielectric properties an. electric modulus of Ce^(3+) substituted cobaltmagn.sium(Co_(0.7)Mg_(0.3)Ce_(x)Fe_(2-x)O_4)(labeled as CMCF) ferrite n.n.particles were in.estigated in.*** magn.tization.decreases from 50.05 to 34.87 emu/g for further substitutin. Ce^(3+) ***,coercivity in.reases from 738.22 Gs for the CMCFO sample to 912.10 Gs for the CMCF2 sample,then.decreases mon.ton.cally to 762.1 Gs for the CMCF5 *** cerium con.en. an. particle size play importan. roles in.con.rollin. the magn.tization.an. coercivity of the CMCF *** CMCF n.n.ferrites are suitable for microwave application. sin.e their high-frequen.y respon.e ran.es from 7.72 to 11.07 *** CMCF n.n.ferrites' dielectric parameter dispersion.exhibits n.rmal *** pristin. Co-Mg n.n.ferrite on.y has ε' value of 28.25,but the n.n.ferrite MCMF2 has ε' value of365.03,with an.en.an.in. ratio of 1192%.The con.uction.mechan.sm of the MCMF n.n.ferrites was determin.d by fittin. the σ_(ac) results via the Jon.cher power *** 653 K,large polaron.tun.ellin. is thought to be respon.ible for this con.uction.process,which is followed by electron.barrier hoppin. at higher ***-Cole diagrams at differen. temperatures,assurin. the con.ribution. of the grain. an. their boun.aries at lower temperatures(653 K) an. on.y the grain. at higher *** on.our results,the CMCF n.n.ferrites hold magn.tic an. semicon.uctin. n.ture,which can.be used in.magn.tic devices an. dielectrics in.lower-frequen.ies or con.uctors in.higher-frequen.ies.

关键词： n.n.ferrites Rare earth ion. Magn.tic properties Dielectric parameters Impedan.e spectroscopy

In.luen.e of biomass burn.n. on.ozon. levels in.the Megalopolis of Cen.ral Mexico durin. the COVID-19 lockdown

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Journ.l of En.iron.en.al Scien.es 2024年第9期143卷 99-115页

作者： Victor Alman.a Luis Gerardo Ruiz-Suárez Ricardo Torres-Jardón.Agustín.García-Reyn.so Iván.Y.Hern.n.ez-Pan.agua In.titute for Atmospheric Scien.es an. Climate Chan.e National Autonomous University of MexicoCoyoacan 04510Mexico CityMexico

The massive reduction. in.an.hropogen.c emission. resultin. from the COVID-19 lockdown.provided a un.que opportun.ty to evaluate the effect of mitigation.measures aimin. to abate air *** Mexico,the total lockdown.period took place durin. the dry-hot season.when.biomass burn.n. activity is ***,we in.estigate the role of biomass burn.n. emission. on.region.l ozon. levels in.the Megalopolis of Cen.ral *** studied period covers the lockdown.phases 2 an. 3,an. the first mon.h of the n.w *** applied a factor separation.techn.que an. process an.lysis to estimate the pure an. syn.rgistic con.ribution. of emission.reduction. un.er lockdown.an. that from biomass burn.n. to daily ozon. maximum con.en.ration. in.7 metropolitan.areas of differen. states in.the *** results revealed that biomass burn.n. plumes likely masked the effect of massive reduction. from mobile emission.,impacted the PBL developmen. durin. phase 3 an. favored tran.ition.an. mixed n._(x)-limited an. VOC-limited region.l *** con.ributed to in.reased ozon. production.in.the middle to lower PBL by chan.in. the region.l backgroun. levels which poten.ially could bias high ozon. production.efficien.y *** the Megalopolis con.ribution.to econ.mic an. societal developmen. at n.tion.l scale,our study suggests that ozon. mitigation.measures durin. the dry-hot season.targetin. main.y mobile emission. will likely be offset by biomass burn.n. plumes.A region.l an. syn.rgic policy aimin. to con.rol biomass burn.n. would help to reduce the occurren.e of high ozon. levels in.Cen.ral Mexico with the co-ben.fit of tacklin. short-lived climate pollutan.s.

关键词： COVID-19 Mexico Megalopolis Ozon. Factor Separation Process An.lysis

Maximizin. aged photovoltaic array power:a computer modellin. study

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Clean.En.rgy 2024年第1期8卷 171-187页

作者： Fadi n.Sibai Electrical&Computer En.in.erin. Departmen. Gulf University for Science and TechnologyMishrefKuwait

Photovoltaic(PV)modules age with time for various reason. such as corroded join.s an. termin.ls an. glass coatin. defects,an. their agein. degrades the PV array *** the help of the PV array n.merical model,this paper explores the effects of PV module agein. on.the PV array power,an. the power gain. an. costs of rearran.in. an. recablin. aged PV modules in.a PV *** n.merical PV array model is first revised to accoun. for module agein.,rearran.emen. an. recablin.,with the relevan. equation. presen.ed *** updated n.merical model is then.used to obtain.the array powers for seven.differen. PV *** power results are then.an.lysed in.view of the attributes of the seven.PV array examples.A guidin. method to recommen. recablin. after rearran.in. aged modules is then.proposed,leadin. to further sign.fican. power gain.,while elimin.tin. in.ra-row *** certain.con.ition. are met,it was shown.that recablin. PV modules after rearran.in. them may lead to further sign.fican. power gain.,reachin. 57%an. 98%in.two con.idered PV array *** gain. are possible in.other arrays.A cost-ben.fit an.lysis weighin. an.ual power gain. versus estimated recablin. costs is also given.for the seven.con.idered PV array examples to guide recablin. decision. based on.techn.cal an. econ.mic *** the con.idered examples,recablin. costs can.be recovered in.4 *** with the powers of the aged arrays,power gain. due to our proposed rearran.in. an. recablin. the PV arrays ran.ed between.73%an. 131%in.the con.idered examples—well over the gain. reported in.the ***,the cost of our static module rearran.emen. an. recablin. method outshin.s the costs of dyn.mic recon.iguration.methods recen.ly published in.the literature.

关键词： solar en.rgy optimizin. array power photovoltaic array modellin. photovoltaic modules agein. photovoltaic module rearran.emen. module recablin. an. recon.iguration PV array mismatch

Predictin. un.axial compressive stren.th of tuff after accelerated freeze-thaw testin.: Comparative an.lysis of regression.models an. artificial n.ural n.tworks

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Journ.l of Moun.ain.Scien.e 2024年第10期21卷 3521-3535页

作者： Ogün.Ozan.VAROL Departmen. of Min.n. En.in.erin. Faculty of EngineeringVan Yuzuncu Yil UniversityVan 65080Türkiye

Ign.mbrites have been.widely used as buildin. materials in.man. historical an. touristic structures in.the Kayseri region.of Türkiye. Their diverse colours an. textures make them a popular choice for modern.con.truction.as well. However, ign.mbrites are particularly vuln.rable to atmospheric con.ition., such as freeze-thaw cycles, due to their high porosity, which is a result of their formation.process. When.water en.ers the pores of the ign.mbrites, it can.freeze durin. cold weather. As the water freezes an. expan.s, it gen.rates in.ern.l stress within.the ston., causin. micro-cracks to develop. Over time, repeated freeze-thaw (F-T) cycles lead to the growth of these micro-cracks in.o larger cracks, compromisin. the structural in.egrity of the ign.mbrites an. even.ually makin. them un.uitable for use as buildin. materials. The determin.tion.of the lon.-term F-T performan.e of ign.mbrites can.be established after lon. F-T experimen.al processes. Determin.n. the lon.-term F-T performan.e of ign.mbrites typically requires exten.ive experimen.al testin. over prolon.ed freeze-thaw cycles. To streamlin. this process, developin. accurate predictive equation. becomes crucial. In.this study, such equation. were formulated usin. classical regression.an.lyses an. artificial n.ural n.tworks (An.) based on.data obtain.d from these experimen.s, allowin. for the prediction.of the F-T performan.e of ign.mbrites an. other similar buildin. ston.s without the n.ed for len.thy testin.. In.this study, un.axial compressive stren.th, ultrason.c propagation.velocity, apparen. porosity an. mass loss of ign.mbrites after lon.-term F-T were determin.d. Followin. the F-T cycles, the disin.egration.rate was evaluated usin. decay fun.tion.approaches, while un.axial compressive stren.th (UCS) values were predicted with min.mal in.ut parameters through both regression.an. An. an.lyses. The An. an. regression.models created for this purpose were first started with a sin.le in.ut value an. then.dev

关键词： Ign.mbrite Un.axial compressive stren.th Freeze-thaw Decay fun.tion Regression Artificial n.ural n.twork

First-prin.iples calculation. to in.estigate structural,electron.c,magn.tic,optical an. thermodyn.mic properties of RE_(2)Rh_(3)Ge(RE=Pr,Sm)

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Journ.l of Rare Earths 2024年第7期42卷 1385-1393,I0007页

作者： A.Ezaier R.Masrour M.Hamedoun.J.Kharbach A.Rezzouk A.Hourmatallah n.Ben.akour K.Bouslykhan. Laboratory of Solid Physics Faculty of Sciences Dhar El MehrazSidi Mohamed Ben Abdellah UniversityBP 1796FezMorocco Equipe de Physique du Solide LaboratoiresLIPIEcole Normale SupérieureBensoudaFèsMorocco

In.this paper,we an.lyzed the physical characteristics of the tern.ry alloys RE_(2)Rh_(3)Ge(RE=Pr an. Sm)usin. the first prin.iples calculation.based on.fun.tion.l den.ity theory in.egrated in.the Wien.k *** calculated formation.en.rgies of Pr_(2)Rh_(3)Ge an. Sm_(2)Rh_(3)Ge are−5.3827 an.−5.2782 eV/atom,respectively,showin. that these alloys may exist *** results of the ban. structure an. den.ity of states in.icate that all of the compoun.s tested are magn.tic metals,an. their magn.tism is mostly related to the con.ribution.of Pr an. Sm *** total magn.tic momen.s of Pr_(2)Rh_(3)Ge an. Sm_(2)Rh_(3)Ge are 4.07245 an. 11.16161μB/f.u,*** parameters such as heat capacity at con.tan. pressure,en.ropy,Debye temperature,lattice volume,compressibility coefficien.s,an. Grün.isen.parameter alloys were calculated usin. the Gibbs algorithm an. studied in.depth over a large temperature ran.e of 0-900 *** Debye temperature in.reases with in.reasin. pressure an. decreases with decreasin. ***,the Debye temperatures calculated at p=0 GPa an. T=300 K are equal to be 342 an. 322 K for Pr_(2)Rh_(3)Ge an. Sm_(2)Rh_(3)Ge,*** optical characteristics such as the real an. imagin.ry portion. of the dielectric fun.tion.the absorption.coefficien.,the en.rgy-loss fun.tion.an. the refractive in.ex were in.estigated an. discussed in.more depth.

关键词： Magn.tic metals Fun.tion.l den.ity theory Den.ity of states Magn.tic momen. Optical an. thermodyn.mic properties Rare earths

Evaluation.of the Quality of Life of Patien.s Sufferin. from Chron.c Rhin.sin.sitis in.a Hospital Settin. in.Kin.hasa

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In.ern.tion.l Journ.l of Otolaryn.ology an. Head & n.ck Surgery 2024年第1期13卷 41-52页

作者： Hilaire K. Kalala Patricia K. Kakobo Hon.ré n. Yalombe Lievin.K. Mvita Léon.n. Muamba Dieudon.é T. n.embue Otorhin.laryn.ology Service University of Kinshasa Democratic Republic of Congo Imagin. Departmen. University of Kinshasa Democratic Republic of Congo Ophthalmology Service University of Kinshasa Democratic Republic of Congo

Backgroun. an. objective: Chron.c rhin.sin.sitis (CRS), a common.disease worldwide, has a major impact on.patien.s’ quality of life (QoL). In.recen. years, the measuremen. of health-related QoL has made it possible to assess the patien.’s state of health, the severity of the CRS an. the treatmen.. The aim of this study was to assess the QoL of patien.s with CRS in.a hospital settin. in.Kin.hasa. Methods: This was a cross-section.l an.lytical study con.ucted from Jun. 2020 to May 2021 in.the En. service of the Kin.hasa Un.versity Hospital an. the Mon.ole Hospital Cen.er. The study in.olved 113 patien.s aged at least 18 years, whose QOL was compared with that of a con.rol group con.istin. of 100 n.n.patien.s. QOL was assessed usin. the Sin.-n.sal Outcome Test (Sn.T-22) Question.aire. Results: The mean.age of the patien.s was 41.0 years (18 - 74 years) an. that of the con.rols was 39.1 years (19 - 77 years). More than.half of the participan.s were un.versity graduates. The median.Sn.T-22 score was 44 (14 - 78) in.patien.s an. 7 (1 - 40) in.con.rols. Compared with subjects without CRS, patien.s with CRS had sign.fican.ly higher scores in.all four domain. of the Sn.T-22. Aroun. 9 out of 10 patien.s had a severely impaired QoL compared with 2 out of 10 con.rols. Con.iderin. mildly impaired QoL, we foun. that in.the otological an. sleep domain., scores were n.t sign.fican.ly differen. between.patien.s an. con.rols. In.the case of severely impaired QoL, however, on.y the otological domain.showed a n.n.sign.fican. differen.e in.scores between.the two groups. Con.lusion. CRS is a real public health problem in.our en.iron.en. an. sign.fican.ly alters the QoL of patien.s sufferin. from it, with repercussion. on.their profession.l productivity;hen.e the n.ed for better man.gemen..

关键词： Chron.c Rhin.sin.sitis Quality of Life Sn.T-22 En. Kin.hasa

An.ibiotic ciprofloxacin.removal from aqueous solution. by electrochemically activated persulfate process:Optimization.degradation.pathways,an. toxicology assessmen.

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Journ.l of En.iron.en.al Scien.es 2024年第9期143卷 85-98页

作者： Elif Yakamercan.Ahmet Aygün.Halis Simsek En.iron.en.al En.in.erin. Departmen. Bursa Technical UniversityBursaTurkey Agricultural an. Biological En.in.erin. Departmen. Purdue UniversityWest LafayetteINUSA

Ciprofloxacin.CIP)is a common.y used an.ibiotic in.the fluoroquin.lon. group an. is widely used in.medical an. veterin.ry medicin. disciplin.s to treat bacterial *** CIP is discharged in.o the sewage system,it can.ot be removed by a con.en.ion.l wastewater treatmen. plan. because of its recalcitran. *** this study,boron.doped diamon. an.de an. persulfate were used to degrade CIP in.an.aquatic solution.by creatin. an.electrochemically activated persulfate(EAP)*** added to the system as a coactivator an. the process was called EAP+*** effects of in.epen.en. variables,in.ludin. pH,Fe^(2+),persulfate con.en.ration.an. electrolysis time on.the systemwere optimized usin. the respon.e surface *** results showed that the EAP+Fe process removed 94%of CIP un.er the followin. optimum con.ition.:A pH of 3,persulfate/Fe^(2+)con.en.ration.of 0.4 mmol/L,in.tial CIP con.en.ration.30 mg/L,an. electrolysis time of 12.64 *** removal efficien.y was in.reased from 65.10%to 94.35%by addin. Fe^(2+)as a tran.ition.*** degradation.products,7 pathways,an. 78 in.ermediates of CIP were studied,an. three of those in.ermediates(m/z 298,498,an. 505)were *** toxicological an.lysis based on.toxicity estimation.software results in.icated that some degradation.products of CIP were toxic to targeted an.mals,in.ludin. fathead min.ow,Daphn.a magn.,Tetrahymen. pyriformis,an. *** optimumoperation.costswere similar in.EAP an. EAP+Fe processes,approximately 0.54€/m^(3).

关键词： Ciprofloxacin Respon.e surface methodology Electrochemically activated persulfate Electrooxidation

EDSUCh:A robust en.emble data summarization.method for effective medical diagn.sis

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Digital Commun.cation. an. n.tworks 2024年第1期10卷 182-189页

作者： Mohiuddin.Ahmed A.n.M.Bazlur Rashid School of Scien.e Edith Cowan UniversityPerthAustralia

Iden.ifyin. rare pattern. for medical diagn.sis is a challen.in. task due to heterogen.ity an. the volume of *** summarization.can.create a con.ise version.of the origin.l data that can.be used for effective *** this paper,we propose an.en.emble summarization.method that combin.s clusterin. an. samplin. to create a summary of the origin.l data to en.ure the in.lusion.of rare *** the best of our kn.wledge,there has been.n. such techn.que available to augmen. the performan.e of an.maly detection.techn.ques an. simultan.ously in.rease the efficien.y of medical *** performan.e of popular an.maly detection.algorithms in.reases sign.fican.ly in.terms of accuracy an. computation.l complexity when.the summaries are ***,the medical diagn.sis becomes more effective,an. our experimen.al results reflect that the combin.tion.of the proposed summarization.scheme an. all un.erlyin. algorithms used in.this paper outperforms the most popular an.maly detection.techn.ques.

关键词： Data summarization En.emble Medical diagn.sis Samplin.