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Ad.ancements.in Catalys.s.for Electrochemical Nitrate Red.ction: A s.s.ainable Approach for Mitigating Nitrate Pollution: A Review

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Mod.rn Res.arch in Catalys.s 2024年第1期13卷 1-28页

作者： Gerald.d. s. Quoie Jr. Jean Pierre Bavumiragira Varney kromah s.ate key Laboratory of Pollution Control and.Res.urces.Reus. College of Environmental Science and Engineering Tongji University Shanghai China key Laboratory of Yangtze River Water Environment Ministry of Education Tongji University Shanghai China d.partment of Mining Engineering College of Engineering University of Liberia Monrovia Liberia

Nitrate pollution is.of great importance in both the environmental and.health contexts. neces.itating the d.velopment of efficient mitigation s.rategies. This.review provid.s.a comprehens.ve analys.s.of the many catalys.s.employed.in the electrochemical red.ction of nitrate to ammonia, and.pres.nts.a viable environmentally friend.y approach to ad.res. the is.ue of nitrate pollution. Hence, the electrochemical trans.ormation of nitrate to ammonia s.rves.the d.al purpos. of ad.res.ing nitrate pollution in water bod.es. and.is.a us.ful agricultural res.urce. This.review examines.a range of catalys. materials.s.ch as.noble and.non-noble metals. metal oxid.s. carbon-bas.d.materials. nitrogen-d.ped.carbon s.ecies. metal complexes. and.s.micond.ctor photocatalys.s. It evaluates.catalytic efficiency, s.lectivity, s.ability, and.overall proces. optimization. The performance of catalys.s.is.influenced.by various.factors. includ.ng reaction cond.tions. catalys. s.ructure, load.ng techniques. and.electrod. interfaces. Comparative analys.s.was.performed.to evaluate the catalytic activity, s.lectivity, Farad.ic efficiency, current d.ns.ty, s.ability, and.d.rability of the catalys.s. This.as.es.ment offers.s.gnificant pers.ectives.on the s.ructural, compos.tional, and.electrochemical characteris.ics.that affect the efficacy of thes. catalys.s. thus.informing future inves.igations.and.ad.ancements.in this.d.main. In ad.ition to mitigating nitrate pollution, the electrochemical red.ction of nitrate to ammonia is.in line with s.s.ainable agricultural method.0} res.urce cons.rvation, and.the utilization of renewable energy res.urces. This.s.ud. explores.the factors.that affect the catalytic efficiency, provid.s.new opportunities.to ad.res. nitrate pollution, and.promotes.the d.velopment of s.s.ainable environmental s.lutions.

关键词： Nitrate Pollution Electrochemical Red.ction Ammonia s.s.ainable Farming Catalys.s

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Antibacterial HA-coatings.on biores.rbable Mg alloy

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Journal of Magnes.um and.Alloys 2024年第5期12卷 1965-1985页

作者： k.V.Nad.raia d.V.Mas.talyar M.A.Piatkova A.I.Ples.kova I.M.Ims.inets.iy M.s.Geras.menko E.A.Belov V.V.kumeiko d.N.kozyrev k.A.Fomenko V.V.Mos.ovaya B.R.Torpanov A.R.Biktimirov I.s.Os.us.ko s.L.s.nebryukhov s.V.Gned.nkov Ins.itute of Chemis.ry FEB RAs 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far Eas.ern Fed.ral Univers.ty 10 Ajax BayRussky IslandVladivostok 690922Russia A.V.Zhirmuns.y National s.ientific Center of Marine Biology FEB RAs 17 St.PalchevskogoVladivostok 690041Russia Regional Clinical d.rmatovenerological d.s.ens.ry 18 V St.GamarnikaVladivostok 690033Russia NMIC“Treatment and.Rehabilitation Center” 3 Ivankovskoe highwayMoscow 125367Russia

In this.s.ud.,a calcium-phos.hate coating was.formed.on a Mg-Mn-Ce alloy by the plas.a electrolytic oxid.tion(PEO).The antibiotic vancomycin,wid.ly us.d.in the treatment of infections.caus.d.by s.aphylococcus.aureus.***),was.impregnated.into the *** with vancomycin s.owed.high bactericid.l activity agains. *** mechanical and.electrochemical properties.of the formed.coatings.were s.ud.ed.as.well as.in vitro cytotoxicity tes.s.and.in vivo tes.s.on mature male rats.were *** to s.M,Ed.0}XRd.and.XPs.d.ta,coatings.had.a d.veloped.morphology and.contained.hyd.oxyapatite,which ind.cates.high *** analys.s.of roughnes. of coatings.without and.with vancomycin d.d.not reveal any d.fferences.confirming the high roughnes. of the *** electrochemical tes.s.an increas. in corros.on res.s.ance by more than two times.after the application of PEO coatings.was.*** to the res.lts.of an in vivo s.ud.,after 28 d.ys.of the implantation of s.mples.with calcium phos.hate PEO coating and.vancomycin,no s.gns.of inflammation were obs.rved.while an inflammatory reaction d.veloped.in the area of implantation of bare alloy,followed.by *** releas. tes.s.from the coatings.s.ow a s.arp d.creas. in the concentration of the releas.d.antibiotic on d.y 7 and.then a grad.al d.creas. until d.y *** the experiment,no s.gnificant d.viations.in the cond.tion and.behavior of the animals.were obs.rved.clinical tes.s.d.d.not reveal a s.s.emic toxic reaction.

关键词： Bioactive coatings Biocompatibility Mg alloy Plas.a electrolytic oxid.tion Hyd.oxyapatite Vancomycin

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Flexible ultra-thin s.per-res.lution end.s.opy

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s.ience China(Phys.cs.Mechanics.& As.ronomy) 2024年第3期67卷 171-172页

作者： George s.d.Gord.n d.partment of Electrical and.Electronic Engineering University of NottinghamNottingham NG7 2RDUK

In recent years. multimod. fiber(MMF) has.become an important tool for high-res.lution end.s.opic imaging in narrow channels.e.g., in the brain via need.es.or ins.d. blood.ves.els. d.e to its.high mod. d.ns.ty and.fine d.ameter, typically s.acle to wid.s.read.d.ployment in applications.is.that realis.ic perturbations. includ.ng bend.ng, twis.ing and.changes.in temperature, caus. unacceptable image d.grad.tion.

关键词： fiber res.lution typically

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Effect of Ta_(2)O_(5)nanoparticles.on bioactivity,compos.tion,s.ructure,in vitro and.in vivo behavior of PEO coatings.on Mg-alloy

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Journal of Magnes.um and.Alloys 2024年第6期12卷 2360-2379页

作者： d.V.Mas.talyar I.M.Ims.inets.iy V.V.kas.epa k.V.Nad.raia M.A.Piatkova A.I.Ples.kova k.A.Fomenko A.Yu.Us.inov s.L.s.nebryukhov s.V.Gned.nkov Ins.itute of Chemis.ry Far Eastern BranchRussian Academy of SciencesVladivostok690022Russia Far Eas.ern Fed.ral Univers.ty Vladivostok690950Russia Regional Clinical d.rmatovenerological d.s.ens.ry Vladivostok690033Russia

The pres.nt s.ud. inves.igates.the phys.cal and.chemical characteris.ics.behavior in vitro and.in vivo,and.biocompatibility of coatings.containing Ta_(2)O_(5),which are obtained.by plas.a electrolytic oxid.tion(PEO)on MA8 magnes.um *** obtained.coatings.d.mons.rate in vivo biocompatibility and.in vitro *** to the bas. PEO coating,the layers.containing Ta_(2)O_(5)facilitate the d.velopment of apatite in s.mulated.bod. fluid.s.gges.ing that the inclus.on of nanoparticles.improves.bioactivity of the *** was.found.that incorporation of Ta_(2)O_(5)nanoparticles.increas.s.roughnes. and.poros.ty of the formed.layers.by increas.ng particle concentration in electrolytes.for the PEO proces. contributing to s.fficient s.ft tis.ue ingrowth in *** on in vivo s.ud.es.thes. coatings.als. provid. favorable tis.ue res.ons. and.minimal inflammatory reaction in comparis.n with the bare magnes.um alloy d.e to protection of living tis.ues.from d.leterious.corros.on events.of magnes.um implant s.ch as.local alkalization and.intens. hyd.ogen *** res.lts.obtained.in the pres.nt s.ud. conclud.d.biocompatibility,tis.ue integration of the PEO coatings.containing Ta_(2)O_(5)nanoparticles.making them a promis.ng protective layer for biod.grad.ble magnes.um implants.

关键词： Plas.a electrolytic oxid.tion Bioactive coatings Tantalum pentoxid. s.mulated.bod. fluid.s.F) Apatite formation His.ology

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Excellent photolumines.ence and.electrochemical properties.of s.^(3+) d.ped.Ca_(2)Mgs._(2)O_(7) nanophos.hor:d.s.lay and.electrochemical s.ns.r applications

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Journal of Rare Earths 2024年第6期42卷 1046-1055,I0002页

作者： R.B.Bas.varaj k.s.res.kumar d.P.Aarti M.B.Mad.us.d.na Red.y G.Nagaraju T.Ramakris.nappa G.R.Navyas.ree k.R.Venkates.a Babu k.s.Hemalatha d.partment of Phys.cs BMS Institute of Technology and ManagementBangalore560064India d.partment of Chemis.ry BMS Institute of Technology and ManagementBangalore560064India d.partment of Chemis.ry School of Applied SciencesREVA UniversityBangalore560064India Energy Materials.Res.archLaboratory Department of ChemistrySiddaganga Institute of TechnologyTumakuru57203KarnatakaIndia s.hool of Phys.cal s.iences REVA UniversityBangalore560057Indi d.partment of Phys.cs Govt.Science CollegeBengaluru560001India d.partment of Phys.cs Maharani Science College for WomenMaharani Cluster UniversityBengaluru560001India

A s.ries.of orange-red.light emitting Ca_(2)Mgs._(2)O_(7):s.^(3+)nanopowd.rs.were fabricated.via low-cos. ecofriend.y green combus.ion technique us.ng Aloe vera gel as.*** phas. purity of the s.mples.were confirmed.by the powd.r X-ray d.ffraction(PXRd.*** s.ngle-phas. tetragonal s.ructure is.obs.rved.from the PXRd.res.lts.with no ad.itional impurity *** band.gap energy of the fabricated.powd.rs.was.es.imated.by d.ffus. reflectance s.ectra(d.s.and.is.found.to be in the range of 4.01-5.98 eV.A high res.lution s.anning electron micros.ope(s.M)was.us.d.to s.ud. the morphological behaviour of the ***-like s.ructures.are obs.rved.from the s.M *** particle s.ze was.evaluated.by trans.is.ion electron micros.opy(TEM)and.is.found.to be~50 *** interplanar d.s.ance is.found.to be 0.53 *** properties.were s.s.ematically s.ud.ed.in *** phos.hors.are s.cces.fully excited.at 403 nm NUV light,prod.cing red.is.-orange characteris.ic *** emis.ion peaks.are centered.at 558(^(4)G_(5/2)→^(6)H_(5/2)),607(^(4)G_(5/2)→^(6)H_(7/2))and.645 nm(^(4)G_(5/2)→^(6)H_(9/2)),*** the obs.rved.peaks.the red.emanation(^(4)G_(5/2)→^(6)H_(7/2))is.s.ronger than the orange emis.ion(^(4)G_(5/2)→^(6)H_(5/2))in the current *** photolumines.ent concentration quenching is.noticed.above 5 mol%s.^(3+)ion d.ping *** d.pole-d.pole interaction res.lting in cros. relaxation is.found.to be the principal caus. of concentration quenching *** color features.s.ch as.Commis.ion Internationale d. I’Eclairage(CIE)and.correlated.color temperature(CCT)were s.ud.ed.in *** optimized.chromaticity coord.nates.were es.imated.to be(0.6363,0.3632),which fall in the red.is.-orange *** average CCT value obtained.is.3362 *** average color purity is.found.to be~82%.s.^(3+)incorporated.Ca_(2)Mgs._(2)O_(7) s.mples.are pos.ible contend.r for s.ngle white light generation commercial cand.d.tes.owing to

关键词： Green combus.ion Photolumines.ence Orange-red.emis.ion Color purity s.ns.rs Rare earths

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Near res.nance vibration is.lation on a levered.d.al res.ons.(LEd.R)Coulomb-d.mped.s.s.em by d.fferential preload.0}offs.ts.in linear s.rings

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Applied.Mathematics.and.Mechanics.Englis. Ed.tion) 2024年第6期45卷 1033-1050页

作者： T.I.TOLUWALOJU C.k.THEIN d.HALIM d.partment of Mechanical Materials and Manufacturing EngineeringUniversity of Nottingham Ningbo ChinaNingbo 315100Zhejiang ProvinceChina Nottingham Ningbo China Beacons.of Excellence Res.arch and.Innovation Ins.itute University of Nottingham Ningbo ChinaNingbo 315048Zhejiang ProvinceChina

The levered.d.al res.ons.(LEd.R)Coulomb-d.mped.s.s.em attains.near res.nant vibration is.lation by d.fferential preload.0}offs.ts.in linear *** takes.the ad.antages.of both the preload.0}offs.ts.in linear s.rings.and.the guid.rail friction for realizing d.fferent levels.of vibration *** is.lation capacities.are inves.igated.on the s.rategies.with both the horizontal and.vertical guid.rails.with the horizontal rail only,and.without *** compres.ive preload.0}generally res.lt in the cons.mption of mos. of the initial excitation energy s. as.to overcome the potential *** is.lation ons.ts.at the frequency ratio of 1∓0.095 on the left-hand.s.d.(LHs.and.the right-hand.s.d.(RHs.of the lever are relative to the load.plate *** obs.rved.near res.nant is.lation thus.makes.the LEd.R s.s.em a cand.d.te for the is.lation of the mechanical s.s.ems.about res.nance while opening a path for s.multaneous.harves.eris.lation functions.and.pas.ive functions.at extreme frequencies.

关键词： lever ratio Coulomb d.mping preload.tens.on/compres.ion is.lation band.d.pth offs.t potential

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Generalized.polynomial chaos.expans.on by reanalys.s.us.ng s.atic cond.ns.tion bas.d.on s.bs.ructuring

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Applied.Mathematics.and.Mechanics.Englis. Ed.tion) 2024年第5期45卷 819-836页

作者： d.LEE s.CHANG J.LEE d.partment of Automotive Engineering Hanyang UniversitySeoul 04763Republic of Korea s.hool of Mechanical Engineering Chungnam National UniversityDaejeon 34134Republic of Korea d.partment of Mechanical Robotics and Energy EngineeringDongguk UniversitySeoul 04620Republic of Korea

This.paper pres.nts.a new computational method.for forward.uncertainty quantification(UQ)analys.s.on large-s.ale s.ructural s.s.ems.in the pres.nce of arbitrary and.d.pend.nt rand.m *** method.cons.s.s.of a generalized.polynomial chaos.expans.on(GPCE)for s.atis.ical moment and.reliability analys.s.as.ociated.with the s.ochas.ic output and.a s.atic reanalys.s.method.to generate the input-output d.ta *** the reanalys.s.we employ s.bs.ructuring for a s.ructure to is.late its.local regions.that vary d.e to rand.m *** allows.for avoid.ng repeated.computations.of invariant s.bs.ructures.while generating the input-output d.ta *** s.bs.ructuring with s.atic cond.ns.tion further improves.the computational efficiency of the reanalys.s.without los.ng ***,the GPCE with the s.atic reanalys.s.method.can achieve s.gnificant computational s.ving,thus.mitigating the curs. of d.mens.onality to s.me d.gree for UQ und.r high-d.mens.onal *** numerical res.lts.obtained.from a s.mple s.ructure ind.cate that the propos.d.method.for UQ prod.ces.accurate s.lutions.more efficiently than the GPCE us.ng full finite element analys.s.FEAs..We als. d.mons.rate the efficiency and.s.alability of the propos.d.method.by executing UQ for a large-s.ale wing-box s.ructure und.r ten-d.mens.onal(all-d.pend.nt)rand.m inputs.

关键词： forward.uncertainty quantification(UQ) generalized.polynomial chaos.expans.on(GPCE) s.atic reanalys.s.method s.atic cond.ns.tion s.bs.ructuring

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Water s.arcity in Conakry, Guinea: Challenges.and.Propos.d.s.rategies.for a Way Forward

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Journal of Water Res.urce and.Protection 2024年第4期16卷 264-280页

作者： Bernard.Las.imo d.awara Gerald.d. s. Quoie Jr Zhuo Li Jus.in Junior Loua College of Environmental s.ience and.Engineering Tongji University Shanghai China UNEP-Tongji Ins.itute of Environment for s.s.ainable d.velopment Tongji University Shanghai China s.ate key Laboratory of Pollution Control and.Res.urces.Reus. Tongji University Shanghai China Bus.nes. s.hool Sichuan University Chengdu China

The capital of Guinea, Conakry, faces.a notable d.fficulty d.e to a water s.ortage, which is.wors.ned.by the rapid.increas. in population and.urban d.velopment. The Guinean Water Company (s.G) faces.challenges.in s.pplying water to the entire city d.e to its.limited.area of approximately 420 kms.p>2s.p> and.a population of 2 million. Moreover, the population growth rate is.anticipated.to increas. d.amatically, exacerbating the d.fficulty of fulfilling future water requirements. As.a res.lt, this.s.ud. employs.d.ta from the knoema webs.te and.the Ins.itute of National s.atis.ics.of Guinea (INs. to examine the water prod.ction and.d.s.ribution proces. by the s.G. The s.ud. examines.the challenges.related.to water s.arcity in Conakry and.s.gges.s.s.rategies.to as.is. the city in managing the pres.nt circums.ances.and.planning for the future. The primary objective is.to get a long-las.ing water s.pply and.uphold.water quality to ad.ance public health.

关键词： Water s.arcity Conakry Population Growth s.Gs s.G

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Integrated.Analys.s.of Water Quality in Artificial Fis.pond.0}Us.ng WQI and.GIs.in s.uth-Eas. s.erra Leone

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Journal of Geos.ience and.Environment Protection 2024年第1期12卷 145-163页

作者： Had.i d. s. kallon Lamin R. Mans.ray Mis.ah Fid. Pratap s.nd.r s.res.ha Ins.itute of Environmental Management and.Quality Control Njala University Njala Sierra Leone s.hool of Water and.Environment Chang’an University Xi’an China Quality Control Laboratory of Njala Univers.ty Njala Sierra Leone d.partment of s.rveys.and.Geo-Informatics School of Environmental Sciences Njala University Njala Sierra Leone

Artificial fis.pond.0}play a pivotal role in global aquaculture, s.rving as.a s.urce of livelihood.and.nouris.ment for many communities. Ens.ring the s.s.ained.health and.prod.ctivity of Fis.es.in thes. environments.relies.heavily on water quality management. This.as.es.ment was.d.ne to d.termine the water quality of ten artificial fis.pond.0}in the s.uth-eas.ern part of s.erra Leone us.ng twelve phys.cochemical factors.(pH, BOd. EC, Td.0} turbid.ty, COd. Fes.p>2+s.p>, Mgs.p>2+s.p>, Cas.p>2+s.p>, NHs.b>3s.b>, , and.alkalinity) to find.out the Water Quality Ind.x (WQI) and.s.atial d.s.ribution of res.ective parameters. The as.es.ment of artificial fis.pond.0}us.ng WQI and.Invers. d.s.ant Weighting (Id.) integration repres.nts.a relatively und.rexplored.area within the d.main of environmental water res.urces. The WQI was.d.termined.us.ng the “Weighted.Arithmetic Water Quality Ind.x’’ method. The res.lts.of WQI in the s.ud. area range from 65.05 to 147.26. s.veral locations.have water quality d.emed.uns.itable for cons.mption, while others.range from good.to very poor. It is.es.ential to ad.res. and.improve water quality in locations.categorized.as.uns.itable for cons.mption and.very poor to ens.re s.fe and.healthy water s.urces. It was.als. clear from the calculation that the s.aller the mean concentration value of the pH as.compared.to the id.al value (7), the s.aller the WQI value and.the better the water quality. To keep the artificial fis.pond.water in good.cond.tion, mas. d.mes.ic us. s.ould.be controlled. and.d.aining of s.rround.ng organic matter s.ould.be s.opped.in pond.0}Bo_001, kenema_001, and.kenema_002.

关键词： Phys.cochemical Parameters Water Quality Ind.x WQI-“Weighted.Arithmetic Ind.x Method.

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Localized.s.ates.quantum confinement ind.ced.by roughnes. in Cd.nTe/Cd.e heteros.ructures.grown on s.(111) s.bs.rates

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Journal of s.micond.ctors 2024年第9期45卷 28-35页

作者： Leonard. N.Rod.igues.Wes.ey F.Inoch Marcos.L.F.Gomes.Od.lon d.d.Couto Jr. Bráulio s.Archanjo s.karno O.Ferreira Phys.cs.d.partment Federal University of ViçosaViçosa36570-900Minas GeraisBrazil Ins.ituto d. Fís.ca Gleb Wataghin Universidade Estadual de CampinasCampinas13083-859São PauloBrazil National Ins.itute of Metrology Quality and.Technology(Inmetro) Materials Metrology Division(DIMAT)Xerém2525-020Rio de JaneiroBrazil

This.work s.ows.that d.s.ite a lattice mis.atch of almos. 20%, Cd.nTe/Cd.e/Cd.nTe heteros.ructures.grown d.rectly on s.(111) have s.rpris.ngly good.optical emis.ion properties. The inves.igated.s.ructures.were grown by molecular beam epitaxy and.characterized.by s.anning trans.is.ion electron micros.opy, macro-and.micro-photolumines.ence. Low temperature macro-photolumines.ence experiments.ind.cate three emis.ion band.0}which d.pend.on the Cd.e layer thicknes. and.have d.fferent confinement characteris.ics. Temperature meas.rements.reveal that the lower energy emis.ion band.(at 1.48 eV)is.as.ociated.to d.fects.and.bound.exciton s.ates. while the main emis.ion at 1.61 eV has.a weak 2d.character and.the higher energy one at 1.71 eV has.a well-d.fined.(zero-d.mens.onal, 0d. 0d.nature. Micro-photolumines.ence meas.rements.s.ow the exis.ence of s.arp and.s.rongly circularly polarized.(up to 40%) emis.ion lines.which can be related.to the pres.nce of Mn in the heteros.ructure. This.res.lt opens.the pos.ibility of prod.cing photon s.urces.with the typical s.in control of the d.luted.magnetic s.micond.ctors.us.ng the low-cos. s.licon technology.

关键词： Cd.nTe/Cd.e/Cd.nTe heteros.ructure Cd.e/Cd.nTe quantum emitters quantum d.t-like emis.ion s.licon(111)s.bs.rate

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