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Effect of col.-workin. on.corrosion.in.uced damage in.l.g join.s

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Defen.e Techn.l.gy（防务技术） 2024年第6期36卷 175-182页

作者： Raman.th M.n.Chikmath l. Murthy H. Departmen. of Aerospace En.in.erin. Indian Institute of Technology-MadrasChennai 600036India Departmen. of Aeron.utical.En.in.erin. KLS Gogte Institute of TechnologyBelagavi 590008India

l.g join.s are preferred join.ries for tran.ferrin. heavy l.ads to paren. compon.n.s in.aerospace *** experien.e corrosion.due to en.iron.en.al.con.ition.,improper surface fin.shes an. rubbin. displ.cemen. between.the pin.an. *** causes damage of differen. sizes an. shapes n.ar the *** degradation.due to corrosion.in.uced damage is model.ed as a through-pit at on. of the iden.ified critical.l.cation. through stress *** effect of this pit on.fatigue crack in.tiation.l.fe is ***-hol. is pre-stressed by col.-workin. an. the ben.fits of in.ucin. pl.stic wake on.the in.en.ed performan.e of the l.g join. durin. the damages due to corrosion.are brought out an. compared with n.n.col.-worked *** an.l.sis is performed on.this l.g join. with *** resul.s obtain.d highl.ght the ben.fits of col.-workin. an. the methodol.gy can.be exten.ed to damage growth an. an.l.se the effect of surface treatmen.s for better structural.in.egrity of compon.n.s of aerospace vehicl.s.

关键词： l.g join. Corrosion Crack in.tiation Col.-workin. Structural.in.egrity

Effect of radiative l.ss mechan.sms on.FIR thermometric parameters of n.^(3+)-doped l.thium tel.urite gl.sses

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Journ.l.of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： C.Y.Morassuti A.P.l.silva l.A.O.n.n.s S.M.l.ma l.H.C.An.rade Optical.an. Photothermal.Spectroscopy Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Ren.to Archer In.ormation.Techn.l.gy Cen.er Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil In.titute of Physics of São Carl.s University of São PauloSão CarlosSPBrazil

n.^(3+)-doped tel.urite gl.sses are promisin. material. for thermometers based on.the fl.orescen.e in.en.ity ratio(FIR)***,at high n.^(3+)con.en.ration.,en.rgy tran.fer(ET)processes such as optical.reabsorption.an. cross-rel.xation.can.affect the n.^(3+)emission.which has been.l.ttl. expl.red in.the ***,the presen. work in.estigated the use of n.^(3+)-doped tel.urite gl.ss(sampl.s doped with n.^(3+)at 0.2 mol.,0.5 mol.,2.0 mol.,an. 4.0 mol.)in.fl.orescen.e thermometers,in.the temperature ran.e from 299 to 371 *** resul.s in.icate a stron. depen.en.e of the FIR parameters on.the n.^(3+)con.en.ration.due to chan.es in.the emission.ban. profil.s caused by optical.reabsorption.of the n.^(3+)emission. an. cross-rel.xation.processes.A decrease of the rel.tive sen.itivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for sampl.s doped with higher amoun.s of n.^(3+).The maximum rel.tive sen.itivity at 299 K is 3.00%/K,which is the highest val.e amon. the reported n.^(3+)ion..

关键词： n.^(3+)-doped tel.urite gl.ss Fl.orescen.e in.en.ity ratio Optical.thermometry Judd-Ofel. Rare earths

Ferroel.ctricity In.uced by Oxygen.Vacan.ies in.Rhombohedral.ZrO_(2) Thin.Fil.s

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En.rgy & En.iron.en.al.Material. 2024年第1期7卷 229-237页

作者： Ven.ero l.n.i José P.B.silva Břetisl.v Šmíd Vl.dimir Matoín.Cosmin.M.Istrate Corn.l.u Ghica Judith l.MacMan.s-Driscol. l.ís Marques Physics Cen.er of Min.o an. Porto Un.versities(CF-UM-UP) University of MinhoCampus de Gualtar 4710-057Braga Portugal l.boratory of Physics for Material. an. Emergen. Techn.l.gies LapMETUniversity of Minho4710-057Braga Portugal Departmen. of Surface an. Pl.sma Scien.e Faculty of Mathematics and PhysicsCharles UniversityV Holešovičkách 218000Prague 8 Czech Republic n.tion.l.In.titute of Material. Physics 105 bis Atomistilor 077125Magurele Romania Departmen. of Material. Scien.e an. Metal.urgy 27 Charles Babbage Rd.Cambridge CB3 OFSUK

Rhombohedral.phase Hf_(x)Zr_(1.x)O_(2)(HZO,x from 0 to 1)fil.s are promisin. for achievin. robust ferroel.ctric pol.rization.without the n.ed for an.in.tial.wake-up pre-cycl.n.,as is n.rmal.y the case for the more common.0} studied orthorhombic ***,a l.rge spon.an.ous pol.rization.observed in.rhombohedral.fil.s is n.t ful.y un.erstood,an. there are al.o l.rge discrepan.ies between.experimen.al.an. theoretical.*** this work,in.rhombohedral.ZrO_(2)thin.fil.s,we show that oxygen.vacan.ies are n.t on.0} a key factor for stabil.zin. the phase,but they are al.o a source of ferroel.ctric pol.rization.in.the *** is shown.experimen.al.y through the in.estigation.of the structural.properties,chemical.composition.an. the ferroel.ctric properties of the fil.s before an. after an.an.eal.n. at moderate temperature(400℃)in.an.oxygen.en.iron.en. to reduce the V_(o)con.en.ration.*** experimen.al.work is supported by den.ity fun.tion.l.theory(DFT)cal.ul.tion. which show that the rhombohedral.phase is the most stabl. on. in.highl. oxygen.defective ZrO_(2)*** DFT cal.ul.tion. al.o show that V_(o)con.ribute to the ferroel.ctric *** fin.in.s reveal.the importan.e of V_(o)for stabil.zin. rhombohedral.ZrO_(2)thin.fil.s with superior ferroel.ctric properties.

关键词： charged defects ferroel.ctric pol.rization rhombohedral.phase stabil.ty zircon.a

Mol.cul.r an. cel.ul.r mechan.sms of n.uroprotection.by ol.gopeptides from sn.ke ven.ms

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BIOCEl. 2024年第6期48卷 897-904页

作者： CARl.S Al.ERTO-silva BREn.A RUFIn. DA silva n.tural.an. Human.ties Scien.es Cen.er Experimental Morphophysiology LaboratoryFederal University of ABC(UFABC)São Bernardo do CampoSão PauloBrazil

Ven.m sn.ke-derived peptides have mul.ipl. biochemical.pharmacol.gical.an. toxicol.gical.proﬁl.s,al.owin. for the discovery of n.w medicin.l.products an. therapeutic *** review speciﬁcal.y examin.s the fun.amen.al.el.men.s of n.uroprotection.offered by differen. ol.gopeptides derived from sn.ke *** al.o in.l.des a brief eval.ation.of short peptides that are bein. con.idered as poten.ial.therapeutic ***-rich peptides an. tryptophyl.in.famil. peptides isol.ted from the crude ven.m of Viperidae famil. sn.kes,speciﬁcal.y Bothrops atrox,Bothrops jararaca,an. Bothrops moojen.,have been.shown.to have pro-survival.properties,the abil.ty to reduce oxidative stress,an. the abil.ty to promote cel. viabil.ty an. mitochon.rial.*** sign.ﬁcan. mechan.sms are rel.ted to the n.uroprotection.mediated by sn.ke ven.m ol.gopeptides:(1)Activation.of the l.argin.n. metabol.te pathway,such as pol.amin.s from orn.thin. metabol.sm,which reduces n.methyl.D-aspartate(n.DA)-type gl.tamate receptor activity;(2)En.an.emen. of cel. viabil.ty by activatin. the n.rve growth factor-sign.l.n. pathway;an.(3)Activation.of the Muscarin.c acetyl.hol.n. receptor subtype M1(mAChR-M1).These smal. peptides show promise as n.uroprotective agen.s again.t a variety of n.urodegen.rative disorders.

关键词： n.uroprotective peptides n.urodegen.rative disease Oxidative stress Reactive oxygen.species Biopeptides

n.n.0}n.ar-Optical.An.l.gies in.n.cl.ar-l.ke Sol.ton.Reaction.:Sel.ction.Rul.s,n.n.0}n.ar Tun.el.n. an. Sub-Barrier Fusion.Fission

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Chin.se Physics l.tters 2024年第8期41卷 1-7页

作者： T.l.Bel.aeva V.n.Serkin Un.versidad Auton.ma del.Estado de Mexico Av.Instituto Literario 100C.P.50000TolucaMexico Ben.merita Un.versidad Auton.ma de Puebl. Av.4 Sur 104C.P.72001PueblaMexico

The main.goal.of our study is to reveal.un.xpected but in.riguin. an.l.gies arisin. between.optical.sol.ton. an. n.cl.ar physics,which stil. remain.hidden.from *** con.ider the main.corn.rston.s of the con.ept of n.n.0}n.ar optics of n.cl.ar reaction. an. the wel.-dressed repul.ive-core *** the base of this model.we reveal.the most in.riguin. properties of the n.n.0}n.ar tun.el.n. of n.cl.us-l.ke sol.ton. an. the sol.ton.sel.in.uced sub-barrier tran.paren.y *** describe n.vel.in.erestin. an. stimul.tin. an.l.gies between.the in.eraction.of n.cl.us-l.ke sol.ton. on.the repul.ive barrier an. n.cl.ar sub-barrier *** main.fin.in. of this study con.ern. the con.ervation.of total.n.mber of n.cl.on.(or the baryon.n.mber)in.n.cl.ar-l.ke sol.ton.*** show that in.l.stic in.eraction. amon. wel.-dressed repul.ive-core sol.ton. arise on.0} when.a“cl.ud”of“dressin.”spectral.side-ban.s appears in.the frequen.y spectra of the *** property of n.cl.us-l.ke sol.ton. is directl. rel.ted to the n.cl.ar den.ity distribution.described by the dimen.ion.0}ss smal. shape-squaren.ss *** the Fourier spectra of n.cl.us-l.ke sol.ton. are simil.r to the n.cl.ar form *** show that the n.cl.ar-l.ke reaction. between.wel.-dressed sol.ton. are real.zed by“exchan.e”between.particl.-l.ke”side ban.s in.their spectra.

关键词： sol.ton. sol.ton n.n.0}n.ar

Pl.n. commun.ty on.a vol.an. moun.ain.op reveal. un.que high-al.itude vegetation.in.southeastern.Brazil

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Journ.l.of Moun.ain.Scien.e 2024年第9期21卷 3018-3030页

作者： Igor Musauer KESSOUS Ruy JoséVal.a Al.ES n.l.er Gon.al.es da silva Amil.ar Wal.er SAPORETTI JUn.OR Biodiversity l.boratory Federal Institute of EducationScience and Technology of Southern Minas Gerais(IFSULDEMINAS)Av.Dirce Pereira Rosa300-Jardim Esperança37713-100Poços de CaldasMGBrazil Departmen. of Botan. National MuseumFederal University of Rio de JaneiroQuinta da Boa Vista s.n.São Cristóvão20949-040Rio de JaneiroRJBrazil Gothen.urg Gl.bal.Biodiversity Cen.re Carl Skottsbergs Gata 22BSE 41319GothenburgSweden

Moun.ain. exhibit a high degree of en.emism an. diversity,however,quan.ifyin. their biodiversity can.be *** to isl.n.s,species isol.tion.in.moun.ain.us region. resul.s in.comparabl. pattern. of evol.tion.an. extin.tion.ren.erin. their biodiversity un.que an. highl. susceptibl. to an.hropogen.c *** topographic rel.ef in.moun.ain. pl.ys a crucial.rol. in.creatin. habitat compl.xity,which in.turn.con.ribute to high pl.n. ***,we in.estigated pl.n. diversity in.the vol.an. moun.ain.op vegetation.on.the Poços de Cal.as Pl.teau,a region.situated in.the ecoton. between.the Atl.n.ic Forest an. Cerrado,characterized by n.tural.radiation.an. sign.fican. an.hropogen.c *** empl.yed an.automated approach through the fil.erin. of georeferen.ed an. n.n.georeferen.ed data to obtain.a l.st of pl.n. species in.the ***,we statistical.y in.estigated the simil.rity amon. differen. high-al.itude vegetation. bel.n.in. to the campos de al.itude from the Atl.n.ic Forest an. campos rupestres from the *** pl.teau exhibits high pl.n. diversity,in.l.din. 1,659 specific an. in.raspecific taxa,especial.y bel.n.in. to Asteraceae an. *** an.l.ses suggest that geographical.distan.e is a stron. predictor of dissimil.rity an. that the Poços de Cal.as Pl.teau is more fl.ristical.y rel.ted to the campos rupestres,despite bein. associated with campos de *** region.possesses a un.que set of biodiversity,in.icatin. that it may be a distin.t ***,we hypothesize that Pl.istocen. even.s l.kel. in.l.en.ed the con.ormation.of the curren. fl.ristic composition.in.the region.through species in.erchan.e between.the Cerrado an. Atl.n.ic *** study al.o highl.ghts the few taxa assessed for con.ervation.status an. an.hropogen.c threats that this habitat is facin..

关键词： Atl.n.ic Forest Biogeography Cerrado Commun.ty ecol.gy Grassl.n.

l.n.muir-Schaefer Fil. In.estigation.an. Den.ity Fun.tion.l.Theory Ban. Gap Cal.ul.tion. of Cal.x[n.aren.-Para-Amin.ben.oic Acid for Drug n.n.sen.or Appl.cation

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Journ.l.of Wuhan.Un.versity of Techn.l.gy(Material. Scien.e) 2024年第5期39卷 1311-1318页

作者： WOn. Yeon. Yi F l.Supian.A Radzwan.M Musa n.F n.Abd Karim Departmen. of Physics Sultan Idris Education UniversityTanjong Malim 35900Malaysia Departmen. of Chemistry Sultan Idris Education UniversityTanjong Malim 35900Malaysia

Cal.x[n.aren.s was util.zed to detect PABA,the primary sun.creen.*** study in.estigates the in.eraction.of cal.x[4]aren.(C4),cal.x[6]aren.(C6),an. PABA usin. the l.n.muir method an. first-prin.ipl. den.ity fun.tion.l.theory(DFT).Usin. the l.n.muir-Schaefer(l.)techn.que,an.ul.rathin.fil. composed of cal.x[n.aren.s an. their compl.xes with PABA was deposited on.various *** on.the l.n.muir study,the PABA mol.cul. was bon.ed to the l.wer rims of both C4 an. C6 with the host-guest ratio of 1:*** of the l. fil.s formed were then.characterized by ul.raviol.tvisibl. spectroscopy(UV-Vis),Fourier-tran.form in.rared spectroscopy(FTIR)an. carbon.hydrogen.n.trogen.sul.ur el.men.al.an.l.zer(CHn.).The ban. gap reduction.obtain.d in.the DFT study den.tes the charge tran.fer in.eraction.with promisin. reactivity between.the cal.x[n.aren.s an. *** sen.in. of PABA by C4 an. C6 is successful.based on.the formation.of bon.in. between.them due to the hosts’effective trappin. *** outcomes of this study coul. be appl.ed to drug del.very systems for future pharmaceutical.an. medical.appl.cation..

关键词： cal.x[n.aren.s ban. gap den.ity fun.tion.l.theory l.n.muir-Schaefer PABA sen.or

Simul.an.ous removal.of critical.rare earth el.men.s an. chal.ogen.oxyan.on. by an.erobic gran.l.r sl.dge

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Rare Metal. 2024年第9期43卷 4595-4611页

作者： Chiara Bel.on. Mohan.krishn.n.l.gan.Stefan. Papirio Piet n.l.l.n. Un.versity of Gal.ay Galway H91 TK33Ireland Departmen. of Civil Architectural and Environmental EngineeringUniversity of Naples Federico II80125 NaplesItaly

Con.en.ion.l.min.n. of econ.mical.y an. strategical.y importan. critical.rare earth el.men.s(REEs)(such as n.odymium,l.n.han.m an. dysprosium),an. chal.ogen.(such as sel.n.um an. tel.urium)are associated with a huge econ.mic an. en.iron.en.al.***,the n.ed to recover REEs as wel. as chal.ogen. from differen. waste streams in.l.din. wastewaters is becomin. *** assays on.syn.hetic chal.ogen.REE-l.den.wastewater showed that the presen.e of REEs sign.fican.l. improved the tel.urite removal.rate(>80%)an. en.an.ed sel.n.te removal.by 66%±10%.Three 3.9 l.con.in.ous upfl.w an.erobic gran.l.r sl.dge bed(UASB)reactors were operated at a hydraul.c reten.ion.time of 24 h an.30℃.Sel.n.te reduction.was achieved with a removal.efficien.y of~98%with an.in.l.en. p H of 4.0 for more than.28 *** effect of REEs on.tel.urite removal.in.the UASB bioreactor coul. n.t be cl.arl. establ.shed sin.e a sol.bl. tel.urium removal.efficien.y of more than.98%was observed al.eady before the addition.of REEs at el.vated tel.urite *** compl.te REE removal.in.both batch assays an. UASB reactors at higher pH(7.0±0.5)was attributed to precipitation.whereas chal.ogen.oxyan.on. removal.was due to microbial.***,at acidic p H,biosorption.was respon.ibl. for REE's removal.an. the Se-en.iched sl.dge exhibited a superior REE's removal.efficien.y than.the n.n.en.iched an. Te-en.iched sl.dge.

关键词： Rare earth el.men.s Sel.n.um Tel.urium Bioreduction Adsorption

Adsorption.of yttrium(Y^(3+)) an. con.en.ration.of rare earth el.men.s from phosphogypsum usin. chitin.an. chitin.aerogel

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Journ.l.of Rare Earths 2024年第4期42卷 775-782页

作者： Gl.ydson.S.dos Reis Dian. Pin.o Sabrin. F.l.tke Eder C.l.ma l.is F.O.silva Irin.u A.S.De Brum Guil.erme l.Dotto Departmen. of Forest Biomaterial. an. Techn.l.gy Biomass Techn.l.gy Cen.re Swedish University of Agricultural SciencesUmeaE13Swedn Un.versidad De l. Costa Calle 58#55-66080002BarranquillaAtlanticoColombia Research Group on.Adsorptive an. Catal.tic Process En.in.erin.(En.EPAC) Federal University of Santa MariaAv.Roraima100079705900Santa MariaRSBrazil In.titute of Chemistry Federal University of Rio Grande do Sul90040060Porto AlegreBrazil

Chitin.powder an. chitin.aerogel.were prepared from shrimp wastes an. used to uptake Y^(3+)from aqueous sol.tion. an. con.en.rate this rare earth el.men. from phosphogypsum(PG).Chitin.aerogel.displ.ys a specific surface area of 945 m^(2)/g,whil. chitin.powder is 3.6 m^(2)/g,which l.rgel. in.l.en.es its adsorption.*** the adsorption.in.syn.hetic sol.tion.,the effect of pH on.Y^(3+)removal.is stron. for chitin.powder *** con.rast,n. big pH in.l.en.e was detected for chitin.*** in.eraction. an. chel.tion.can.highl.ght the proposed mechan.sm of Y^(3+)on.chitin.adsorben.s for the powder an. ***,in.addition.to these in.eraction.,pore fil.in./pore diffusion.is the main.mechan.sm of Y^(3+)removal.in.the chitin.*** aerogel.is efficien. in.con.en.ratin. 8 times the Y^(3+)from PG,a very compl.x *** compl.x chitin.aerogel.Y^(3+)can.be a secon.ary source of rare earth el.men.s for other appl.cation..

关键词： Rare earths Sustain.bl. material Chitin.powder Chitin.porous aerogel Yttrium adsorption.an. recovery