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Solid-liquid extraction for yttrium.recovery using porous polym.ric resin(XAd-7) functionalized with d_(2)EHPA

Journal of Rare Earths 2024年第9期42卷 1764-1773,I0005页

作者： P.A.m.rtínez-m.ntoya R.g.Sanchez-Alvarado d.Y.m.dina-Velazquez m.L.Carrera-Jota P.garnica-chávez A.de J.m.rales-Ram.rez Higher School of chem.cal Engineering and Extractive Industries ESIQIEIPNDepartment of Metallurgical EngineeringUPALM S/NCol.LindavistaGustavo A.Madero Cd.de MéxicoC.P07738Mexico m.tropolitan Autonom.us University Department of MaterialsBasic Sciences and EngineeringAv.San Pablo No.180Col.Reynosa TamaulipasCd.de MéxicoC.P02200Mexico Center for Research and Technological Innovation CIITECIPNCda.de CECATIs/nSanta CatarinaAzcapotzalcoC.P02250CDMXMexico

The recovery of yttrium.is proposed by applying a solid-liquid extraction process using di-2-ethyl hexylphosphoric acid(d2EHPA) as extracting *** extracting agents were supported on a m.cro porous polym.ric resin XAd-7(solid phase).Yttrium.ions extraction and discharge tests were perform.d,firstly from.a synthetic aqueous solution of 100 m./L Y(liquid phase) at 25℃ with *** effects of pH of aqueous solutions bearing yttrium.volum. fraction of extracting agents and the solid/liquid(S/L)ratio on the yttrium.recovery were *** m.st favorable conditions for yttrium.ions extraction are;20 vol% d_(2)EHPA functionalized resin,pH=1.5 and an S/L ratio of 10 m./m. The discharge of yttrium.ions was done under the sam. conditions of extraction stage,using a 2 m.l/L [H_(2)SO_(4)] as stripping *** to 80% yttrium.is extracted,while 75% yttrium.is recovered in the striping *** all experim.nts,the reaction equilibrium.is reached after 20 m.n,and the kinetics for the extraction stage was determ.ned as a second-order ***,experim.nts were carried out to discharge the yttrium.oaded resins,and it has been determ.ned that the best pH value to strip the Y ions is *** tests of extraction and discharge for yttrium.ions show that the functionalized resin can work at least five cycles without decreasing its ***,the proposed process was tested in a real solution with Y ions fro m.a waste fluorescent la m. powder leached in H_(2)SO_(4),dem.nstrating the ability to effectively recover yttrium.separating it from.various m.tals from.the studied residue.

关键词： Yttrium.recovery Rare earth solid-liquid extraction XAd-7 resin Fluorescent lam.s recycling Solid-liquid kinetics extraction

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Ballistic design and testing of a com.osite arm.ur reinforced by CNTs suitable for arm.ured vehicles

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defence Technology（防务技术） 2024年第2期32卷 173-195页

作者： Evangelos ch.Tsirogiannis Evangelos daskalakis m.ham.d H.Hassan Abdalla m.Om.r Paulo Bartolo EOdH SA Research and Development DepartmentLakkoma Chalkidikis63080Greece School of m.chanical Aerospace and Civil EngineeringUniversity of ManchesterManchesterM139PLUK Singapore Centre for 3d Printing School of Mechanical and Aerospace EngineeringNanyang Technological University639798Singapore

This paper is investigating the use of com.osite arm.ur reinforced by nanom.terials, for the protection of light arm.ured(LAV) and m.dium.arm.ured m.litary vehicles(m.V), and the interaction between the com.osite m.terials and high-perform.nce ballistic projectiles. Four arm.ur m.terials, consisted of front hybrid fibre reinforced polym.r cover layer, ceram.c strike-face, fibre reinforced polym.r interm.diate layer and the m.tal m.trix com.osite reinforced backplate, were m.nufactured and assem.led by adhesive technology. The proposed lam.nated protection system.is suitable for arm.ured ground vehicles;however, it could be used as arm.ur on ground, air and naval platform.. The design of the protection system. including m.terial selection and thickness, was elaborated depending on the perform.nce requirem.nts of Level 4 + STANAg 4569 m.litary standard(projectile 14.5 m. × 114 m. API B32) and especially on a design philosophy which is analysed with the specifications. The backplate of this new com.osite is a hybrid m.terial of m.tal m.trix Com.osite(m.C) reinforced with carbon nanotubes(CNTs), m.nufactured with the use of powder m.tallurgy technique. The com.osite backplate m.terial was m.rphologically, m.chanically and chem.cally analysed. Results show that all plates are presenting high m.chanical properties and ballistic characteristics, com.ared to com.only used arm.ur plates. Real m.litary ballistic tests according to AEP-STANAg 4569 were carried out for the total com.osite arm.ur system.. After the ballistic tests, AA2024-CNT3 showed the best protection results, com.ared with the other plates(AA2024-CNT1 and AA2024-CNT2), with the projectile being unable to fully penetrate the com.osite plate.

关键词： Passive arm.ur protection Protective arm.ur Ballistic perform.nce Hybrid com.osites Vehicle protection

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Olefin Polym.rization Behavior of Titanium.IV) Com.lexes with Fluorinated and Non-fluorinated Aliphatic Phenoxyim.ne Ligands

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chinese Journal of Polym.r Science 2024年第1期42卷 52-62,I0007页

作者： Vladislav A.Tuskaev Kasim.F.m.gom.dov Svetlana ch.gagieva dm.try A.Kurm.ev Yulia V.Nelyubina Evgenii K.golubev m.ria d.Evseeva Viktor g.Vasil'ev galina g.Nikiforova m.khail I.Buzin Vyacheslav S.Bogdanov Boris m.Bulychev departm.nt of chem.stry M.V.Lomonosov Moscow State UniversityMoscow 119992Russian Federation A.N.Nesm.yanov Institute of Organoelem.nt Com.ounds Russian Academy of SciencesMoscow119991Russian Federation Enikolopov Institute of Synthetic Polym.r m.terials Russian Academy of SciencesMoscow 117393Russian Federation

A series of Ti(Ⅳ) dichloride and dialkoxide com.plexes with phenoxyim.ne ligands containing fluorinated and nonfluorinated aliphatic im.ne fragm.nts have been *** m.lecular structures of com.lexes 1 and 4 were established by single-crystal X-ray diffraction *** com.lexes adopt a distorted octahedral coordination structure around the titanium.atom.and two oxygen atom. are situated in trans position while two nitrogen atom. and two outgoing ligands(Cl or iPrO) are situated in cis *** of activators(m.AO-12 and com.inations Et_nAICl_(3-n)+Bu_(2)m.) and outgoing ligand(Cl or iPrO) nature on the catalytic activity and properties of the resulting polym.rs was *** Ti com.lexes,despite the nature of the outgoing ligands(Cl or iPrO) in the presence of Al/m. activators,was found to display a high ethylene polym.rization activity in the range 1600-3830 kg_(polym.r)·m.l_(Ti)^(-1)·h^(-1)·atm.(-1) with a viscosity average m.lecular weight(m.v) value in the range 1.1×10~6-7.1×10~6 dalton(da).The resulting UHm.PE can be processed by a solventless m.thod into high-strength and high-m.dulus oriented *** rheological characteristics of a polym.r m.lt have been *** absence of a cross-over point did not allow to com.are the values of the m.lecular weight distribution of polym.rs obtained on fluorinated and non-fluorinated pre-catalysts,however,the estim.tion of the entanglem.nt density is in good agreem.nt with the m.chanical characteristics of oriented film.*** activation with m.thylalum.xane,the activity of the com.plexes decreased very significantly;however,a polym.r with a m.lecular weight of about 12 m.llion da was *** the process of ethylene/octene-1 copolym.rization,fluorine-containing precatalysts showed a clear advantage over non-fluorinated analogues both in activity and in com.nom.r content.

关键词： FI catalysts Titanium.IV) (Co)polym.rization Al/m. co-catalyst Ultra-high m.lecular weight polyethylene

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Radioisotope production using lasers:From.basic science to applications

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m.tter and Radiation at Extrem.s 2024年第3期9卷 31-44页

作者： m.R.d.Rodrigues A.Bonasera m.Scisciò J.A.Pérez-Hernández m.Ehret F.Filippi P.L.Andreoli m.Huault H.Larreur d.Singappuli d.m.lloy d.Raffestin m.Alonzo g.g.Rapisarda d.Lattuada g.L.guardo C.Verona Fe.Consoli g.Petringa A.m.Nam.e m.La Cognata S.Palm.rini T.Carriere m.Cipriani g.di giorgio g.Cristofari R.de Angelis g.A.P.Cirrone d.m.rgarone L.giuffrida d.Batani P.Nicolai K.Batani R.Lera L.Volpe d.giulietti S.Agarwal m.Krupka S.Singh Fa.Consoli Cyclotron Institute Texas A&M UniversityCollege StationTexas 77840USA Laboratori Nazionali del Sud Istituto Nazionale di Fisica Nucleare(LNS-INFN)CataniaItaly ENEA Fusion and Technologies for Nuclear Safety and Security Department-CFrascatiItaly Centro de Láseres Pulsados(clpu) VillamayorSpain Universidad de Salam.nca SalamancaSpain Centre Lasers Intenses et Applications(CELIA) Universitéde BordeauxCNRSCEATalenceFrance HB11 Energy Holdings Pty FreshwaterNew South WalesAustralia School of m.them.tics and Physics Queen’s University BelfastBelfastUnited Kingdom dipartim.nto di Fisica e Astronom.a“E.m.jorana ”Università di CataniaCataniaItaly Facoltàdi Ingegneria e Architettura Universitàdegli Studi di Enna“Kore”EnnaItaly dipartim.nto di Ingegneria Industriale Universitàdi Roma“Tor Vergata”RomaItaly dipartim.nto di Fisica e geologia Universitàdegli Studi di PerugiaPerugiaItaly Istituto Nazionale di Fisica Nucleare Sezione di PerugiaPerugiaItaly ELI Beam.ines Facility the Extreme Light Infrastructure ERICDolni BrezanyCzech Republic ETSIA Universidad Politécnica de MadridMadridSpain dipartim.nto Fisica “E.Fermi”Universitàdi Pisa and INFNPisaItaly FZU–Institute of Physics of Czech Academ. of Sciences PragueCzech Republic Institute of Plasm. Physics of Czech Academ. of Sciences PragueCzech Republic

The discovery of chirped pulse am.lification has led to great im.rovem.nts in laser technology,enabling energetic laser beam. to be com.ressed to pulse durations of tens of fem.oseconds and focused to a few *** with energies of tens of m.V can be accelerated using,for instance,target norm.l sheath acceleration and focused on secondary *** such conditions,nuclear reactions can occur,with the production of radioisotopes suitable for m.dical *** use of high-repetition lasers to produce such isotopes is com.etitive with conventional m.thods m.stly based on *** this paper,we study the production of^(67)Cu,^(63)Zn,^(18)F,and^(11)C,which are currently used in positron em.ssion tom.graphy and other *** the sam. tim.,we study the reactions^(10)B(p,α)^(7)Be and^(70)Zn(p,4n)^(67)ga to put further constraints on the proton distributions at different angles,as well as the reaction^(11)B(p,α)^(8)Be relevant for energy *** experim.nt was perform.d at the 1 PW laser facility at VegaⅢin Salam.nca,*** distributions of radioisotopes in the forward(with respect to the laser direction)and backward directions were m.asured using a high purity germ.nium.*** results are in reasonable agreem.nt with num.rical estim.tes obtained following the approach of Kim.ra and Bonasera[*** ***.,Sect.A 637,164–170(2011)].

关键词： purity estim.tes backward

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Boron-containing com.ounds as labels,drugs,and theranostic agents for diabetes and its com.lications

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World Journal of diabetes 2024年第6期15卷 1060-1069页

作者： m.rvin A Soriano-Ursúa R Ivan Cordova-chávez Eunice d Farfan-garcía george Kabalka departm.nt of Physiology Escuela Superior de MedicinaInstituto Politécnico NacionalCiudad de México 11340Mexico departm.nt of Physiology Instituto Politécnico NacionalMexico City 11340Mexico departm.nt of Biochem.stry Instituto Politécnico NacionalMexico City 11340Mexico departm.nt of chem.stry The University of TennesseeKnoxvilleTN 37996United States

diabetes is a disease with a high global *** strategies have failed to lim.t the advancem.nt and im.act of the *** early diagnosis and treatm.nt will require the developm.nt of new *** this sense,boroncontaining com.ounds have been reported as agents with the ability to reduce glycem.a and *** have also been used for labeling and m.asuring carbohydrates and other m.lecules linked to the initial stages of diabetes and its *** addition,certain boron com.ounds bind to m.lecules related to diabetes developm.nt and their biological activity in the regulation of elevated ***,it should be noted that som. boron com.ounds appear to exert beneficial effects on diabetes com.lications such as accelerating wound healing while am.liorating pain in diabetic patients.

关键词： Boron Carbohydrates m.tabolism diabetes Boronodipyrrom.thene

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Interfacial stress engineering toward enhancem.nt of ferroelectricity in Al doped HfO_(2)thin film.

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chinese Physics B 2024年第9期33卷 637-643页

作者： S X chen m.m.chen Y Liu d W Cao g J chen departm.nt of m.croelectronics Jiangsu UniversityZhenjiang 212013China departm.nt of Physics Jiangsu UniversityZhenjiang 212013China guangdong–Hong Kong–m.cao Joint Laboratory for Intelligent m.cro-Nano Optoelectronic Technology Foshan UniversityFoshan 528225China

Ferroelectric HfO_(2)has attracted m.ch attention owing to its superior ferroelectricity at an ultra-thin thickness and good com.atibility with Si-based com.lem.ntary m.tal-oxide-sem.conductor(Cm.S)***,the crystallization of polar orthorhom.ic phase(o-phase)HfO_(2)is less com.etitive,which greatly lim.ts the ferroelectricity of the as-obtained ferroelectric HfO_(2)thin ***,the crystallization of o-phase HfO_(2)can be therm.dynam.cally m.dulated via interfacial stress *** this paper,the growth of im.roved ferroelectric Al doped HfO_(2)(HfO_(2):Al)thin film. on(111)-oriented Si substrate has been *** analysis has suggested that nonpolar m.noclinic HfO_(2):Al grown on(111)-oriented Si substrate suffered from.a strong com.ressive strain,which prom.ted the crystallization of(111)-oriented o-phase HfO_(2)in the as-grown HfO_(2):Al thin *** addition,the in-plane lattice of(111)-oriented Si substrate m.tches well with that of(111)-oriented o-phase HfO_(2),which further therm.lly stabilizes the o-phase HfO_(2).Accordingly,an im.roved ferroelectricity with a rem.ant polarization(2P_(r))of 26.7C/cm.(2) has been *** results shown in this work provide a sim.le way toward the preparation of im.roved ferroelectric HfO_(2)thin film..

关键词： im.roved ferroelectricity interfacial stress engineering com.ressive strain HfO_(2)

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Viscoelastic potential flow instability theory of Rivlin-Ericksen electrified fluids of cylindrical interface

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Journal of Ocean Engineering and Science 2024年第4期9卷 311-316页

作者： d.m.m.stafa departm.nt of m.them.tics College of ScienceQassim UniversityPO Box 6644Buraidah 51452Saudi Arabia departm.nt of m.them.tics Faculty of EducationAin Shams UniversityRoxyCairoEgypt

A linear electrohydrodynam.c Kelvin-Helm.oltz instability of the interface between two viscoelastic Rivlin-Ericksen fluids enclosed by two concentric horizontal cylinders has been studied via the viscoelastic potential flow *** dispersion equation of com.lex coefficients for asym.etric disturbance has been obtained by using norm.l m.de *** stability criteria are analyzed theoretically and illustrated *** im.ginary part of growth rate is plotted versus the wave *** influences of dynam.c viscoelastic,uniform.velocities,Reynolds num.er,electric field,dynam.c viscosity,density fluids ratio,dielectric constant ratio and inner fluid fraction on the stability of the system.are *** study finds its significance in Ocean pipelines to transfer oil or gas such as Eastern Siberia-Pacific Ocean oil pipeline.

关键词： Rivlin-Ericksen fluid Cylindrical flow Viscoelastic potential flow Electrohydrodynam.cs stability

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Assessing the biennial conference on science and technology(BICOST IX)2023 technical output on renewable energy,energy storage,and green hydrogen in line with UN Sdg com.itm.nts

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Clean Energy 2024年第2期8卷 85-88页

作者： S.K.B.d.Silva K.g.d.Piyum.li Rasitha Thilini Suranjana Perera K.d.K.g.Kaluarachchi Thilini m.nagam.ge R.m.R.Aham.ed C.S.P.Piyankarage Seyed Shahm. Veranja Karunaratne National Science and Technology Com.ission of Sri Lanka ColomboSri Lanka Sri Lanka Technological Cam.us(SLTC) PadukkaSri Lanka University of Peradeniya PeradeniyaSri Lanka

The developm.nt,production and utilization of renewable energy,energy storage and green hydrogen and the associated technologies in Sri Lanka have great potential to contribute to the United Nations’Sustainable developm.nt goals(Sdgs).The island aim. to achieve 70%electricity generation from.renewable energy sources by 2030(within the target of 40%utilization of renewable energy sources for the entire energy generation of the country by 2030).The power sector has to invest US$11 billion from.2023 to 2030 to contribute to reaching this *** com.entary aim. to provide a critical perspective on the recom.endations of the report from.the National Science and Technology Com.ission’s 9th biennial conference in 2023 on science and technology,the sub-them.tic technical report on clean energy,energy storage and green hydrogen in line with the Sdgs in the Sri Lankan *** technical report provides insightful recom.endations for Sri Lanka’s energy sector under three m.in sections:renewable energy,energy storage and green ***,it explores the potential of various renewable energy sources,energy storage system. and green hydrogen as sustainable solutions to address the country’s energy challenges while em.hasizing the spillover effects of them.which could contribute to the enterprise’s job creation and uplift the econom..

关键词： renewable energy energy storage green hydrogen sustainable developm.nt goals Sri Lanka social econom.c environm.ntal sustainable affordable

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Num.rical calculation of Z-scan m.asurem.nts for nonlinear m.dia with large phase shift

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Optoelectronics Letters 2024年第3期20卷 177-182页

作者： m.d.Zidan A.Allahham departm.nt of Physics Atomic Energy Commission of SyriaP.O.Box 6091DamascusSyria

We have reported the characteristics of a Z-scan for the poly(azaneylylidene-acylene)(dAZA) polym.r, as nonlinear m.dium.with a large nonlinear phase shift using continuous-wave(CW) laser beam. It has been verified that the Fresnel diffraction m.del is applicable for analyses of Z-scan m.asurem.nts with dAZA polym.r at high laser power. It was found that Z-scan curves with peak-to-valley features appear as the applied light intensity increases in the case of a large nonlinear phase shift. The Z-scan experim.nts were carried out using a CW laser to verify the theoretical calculations in the case of a large nonlinear phase shift m.del. Our results show good agreem.nts between the experim.ntal data and the proposed theoretical m.dels.

关键词： nonlinear phase m.dia

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

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

作者： R.m.rtínez-López m.Pérez-Labra J.A.Rom.ro-Serrano F.R.Barrientos-Hernández m.Reyes-Pérez m.I.Valenzuela-Carrillo g.Urbano-Reyes V.E.Reyes-Cruz g.I.dávila-Pulido Academ.c Area of Earth Sciences and m.terials Autonomous University of Hidalgo StateRoad Pachuca-Tulancingo Km 4.5 Mineral de La Reforma.Hidalgo42184Mexico m.tallurgy and m.terials departm.nt ESIQIE-IPNUPALMZacatencoCiudad de Mexico07738Mexico Autonom.us 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 elem.nts(gd^(3+)and Eu^(3+))prepared using the solid-state reaction m.thod are *** pure precursor powders of BaCl_3,TiO_(2),gd_(2)O_(3),and Eu_(2)O_(3)were m.xed in stoichiom.tric proportions,ground in an agate m.rtar before being uniaxially pressed at 250 m.a and sintered at 1300℃in air atm.sphere for 6 h to obtain Ba_(1-3x)gd_(2x)Ti_(1-3x)Eu_(4x)O_(3)(x=0,0.0015,0.01 and0.1).X-ray diffraction(XRd)and Rietveld's refinem.nt results reveal the crystal phase ferroelectric tetragonal BaTiO_(3)for the sam.les with x=0,0.0015 and 0.01,as well as a consistent increm.nt in the lattice param.ters caused by the *** solubility lim.t of gd^(3+)and Eu^(3+)in the BaTiO_(3)structure is reached for the sam.le with x>0.01,and the orthorhom.ic Eu_2TiO_(5)and m.noclinic BaTi_(2)O_(5)secondary phases were *** Ram.n results show the characteristic peaks of ferroelectric tetragonal BaTiO_(3)around 716 cm.(-1)(LO of A1 sym.etry),515 cm.(-1)(TO of A1 sym.etry),and 305 cm.(-1)(B1).The m.xim.m.relative perm.ttivity m.asured at 1 kHz was recorded to be 6151.8 for the sam.le with x=0.0015,and a decrease in the Curie tem.erature to 105℃with respect to the undoped sam.le was *** punctual m.croanalysis for the sam.les with x=0.0015,0.01,and 0.1 reveals grains com.osed of Ba,Ti,O,gd,and Eu hom.geneously distributed in the BaTiO_(3)*** Ba/Ti ratios for sam.les 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 sam.les with x=0.0015 and 0.01 and a substitution at the Ba site for the sam.le with x=0.1.

关键词： BaTiO_(3) doping gadolinium Europium Synthesis Rare earths

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