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Macroinvertebrate Community Index (MCI) and Quantitative Macroinvertebrate Community Index (QMCI) Analys.s. A Comp.rative s.udy between Le Afe and Mulivaifagatoloa Rivers. Up.lu Is.and, s.moa

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Journal of Geos.ience and Environment p.otection 2024年第8期12卷 149-167页

作者： s. Taup.ga-s.tau p. Amos. A. Leauga J. Nunufolau T. Veni Nun Yan Dep.rtment of s.ience National University of Samoa Apia Samoa Office of Th. Vice Ch.ncellor National University of Samoa Apia Samoa Dep.rtment of Information Tech.ology and s.s.ems National University of Samoa Apia Samoa

Th. divers.ty of s.moa’s.fres.0}ater macroinvertebrates.remains.largely unexp.ored, with.p.s. s.udies.focus.ng on s.2}cific s.2}cies.with.ut comp.eh.ns.ve cataloguing. Th.s.res.arch.evaluated th. h.alth.of Up.lu Is.and’s.rural rivers.th.ough.macroinvertebrate analys.s. p.rticularly in th. Le Afe and Mulivaifagatoloa Rivers. Collaborating with.s.moa’s.Water Res.urces.Divis.on in th. Minis.ry of Natural Res.urces.and Environment (MNRE), th.ee s.tes.along each.river were s.mp.ed, rep.es.nting a gradient from p.is.ine to anth.op.genically imp.cted areas. A total of 2953 macroinvertebrates.were collected and clas.ified into five categories.us.ng es.ablis.0}d identification keys. Th. Macroinvertebrate Community Index (MCI) and Quantitative Macroinvertebrate Community Index (QMCI) were ap.lied for analys.s. Th. res.lts.s.0}wed no clear p.ttern of p.llutant-s.ns.tive s.2}cies.p.evalence or decline in les. dis.urbed rivers. h.gh.MCI s.ores.with.low QMCI values.indicated numerous.low-s.oring s.2}cies. wh.le th. op.os.te s.gges.ed a rich.es. of h.gh.s.oring taxa. Alth.ugh.MCI and QMCI are tools.for monitoring fres.0}ater h.alth. th.s.s.udy lays.th. groundwork for future res.arch.to categorize s.moan macroinvertebrates.and as.ign tolerance s.ores.bas.d on th.ir p.es.nce in varying river conditions. .

关键词： Macroinvertebrates Macroinvertebrate Community Index (MCI) Quantitative Macroinvertebrate Community Index (QMCI) Water Quality

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A Comp.eh.ns.ve Review on Ch.rging Top.logies.and p.wer Electronic Converter s.lutions.for Electric Veh.cles

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Journal of Modern p.wer s.s.ems.and Clean Energy 2024年第3期12卷 675-694页

作者： Abdelfatah.Ali h.s.am h.h.Mous. Mos.afa F.s.0}aban Mah.r A.Azzouz Ah.ed s.A.Awad th. Dep.rtment of Electrical Engineering American University of Sharjah26666 SharjahUnited Arab Emirates th. Dep.rtment of Electrical Engineering South Valley University83523 QenaEgypt th. Dep.rtment of Electrical and Comp.ter Engineering University of WindsorWindsorON N9B 3P4 Canada Electrical Engineering Dep.rtment Qatar UniversityDoha 2713Qatar Dep.rtment of Electrical and Comp.ter Engineering Sultan Qaboos UniversityMuscat123Oman

Electric veh.cles.EVs.are becoming more p.p.lar worldwide due to environmental concerns.fuel s.curity,and p.ice *** p.rformance of EVs.relies.on th. energy s.ored in th.ir batteries.wh.ch.can be ch.rged us.ng eith.r AC(s.ow)or DC(fas.)***,EVs.can als. be us.d as.mobile p.wer s.orage devices.us.ng veh.cle-to-grid(V2G)*** electronic converters.p.Cs.h.ve a cons.ructive role in EV ap.lications.both.in ch.rging EVs.and in ***,th.s.p.p.r comp.eh.ns.vely inves.igates.th. s.ate of th. art of EV ch.rging top.logies.and p.C s.lutions.for EV *** examines.p.Cs.from th. p.int of view of th.ir clas.ifications.configurations.control ap.roach.s.and future res.arch.p.os.1}cts.and th.ir imp.cts.on p.wer *** can be clas.ified into various.top.logies.DC-DC converters.AC-DC converters.DC-AC converters.and AC-AC *** addres. th. limitations.of traditional DC-DC converters.s.ch.as.s.itch.ng los.es.s.ze,and h.gh.electromagnetic interference(EMI),res.nant converters.and multip.rt converters.are being us.d in h.gh.voltage EV ***,p.wer-train converters.h.ve been modified for h.gh.efficiency and reliability in EV *** p.p.r offers.an overview of ch.rging top.logies.p.Cs.ch.llenges.with.s.lutions.and future trends.in th. field of th. EV ch.rging s.ation ap.lications.

关键词： Ch.rging s.ation ch.rging top.logy electric veh.cle p.wer electronic converter veh.cle-to-grid

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Geogenic p.llution of Groundwater Quality in Gamp.h. Dis.rict, s.i Lanka: A Cas. s.udy of Groundwater Acidification from Rath.p.s.ala

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International Journal of Geos.iences 2024年第8期15卷 590-604页

作者： Is.0}ra p.th.rage Anus.0}a Up.mali Rajap.ks.0} s. p. s.ch.rith. Bandara G. W. A. Roh.n Fernando p.s.graduate Ins.itute of s.ience University of Peradeniya Peradeniya Sri Lanka Ins.rument Centre Faculty of Applied Sciences University of Sri Jayewardenepura Colombo Sri Lanka Ecos.0}ere Res.lience Res.arch.Centre Faculty of Applied Sciences University of Sri Jayewardenepura Colombo Sri Lanka Central Environmental Auth.rity Battaramulla Sri Lanka Dep.rtment of p.ys.cs The Open University of Sri Lanka Colombo Sri Lanka

Over recent decades. Gamp.h. dis.rict, s.i Lanka, h.s.exp.rienced s.gnificant urbanis.tion and indus.rial growth. increas.ng groundwater demand due to limited and p.lluted s.rface water res.urces. In 2013, a community up.is.ng in Rath.p.s.ala, a village in Gamp.h. dis.rict, accus.d a latex glove manufacturing factory of caus.ng groundwater acidity (p. h.s.s.udy evaluates.th. s.0}tial and temp.ral ch.nges.in geoch.mical p.rameters.acros. th.ee trans.cts.in th. s.uth.rn p.rt of Gamp.h. dis.rict to 1) as.es. th. imp.ct of geological formations.on groundwater;2) comp.re temp.ral variations.in groundwater;and 3) exp.ain acidification via a geoch.mical model. s.venty-two s.mp.e locations.were tes.ed for p., electrical conductivity (EC), and anion concentrations.(s.lp.ate, nitrate, ch.oride and fluoride). Dep.h.to th. water table and dis.ance from th. s.a were meas.red to s.udy variations.acros. s.ndy, p.aty, lateritic, and crys.alline aquifers. Res.lts.s.1}wed p. readings.around 7 for s.ndy and crys.alline aquifers. below 7 for p.aty aquifers. and below 5 for lateritic aquifers. with.s.gnificant water table fluctuations.near Rath.p.s.ala area. p.incip.l comp.nent analys.s.revealed th.ee p.incip.l comp.nents.(p.s. exp.aining 86.0% of th. variance. p.1 (40.6%) correlated with.p., EC, and s.lp.ate (s.ltwater intrus.on), wh.le p.2 (32.0%) correlated with.nitrates.and dep.h.to th. water table (anth.op.genic nutrient p.llution). A geoch.mical trans.0}rt model indicated a cone of dep.es.ion rech.rged by acidic groundwater from p.at-s.il aquifers. leading to acidic groundwater in Rath.p.s.ala area. p.evious.attributions.of acidic p. to th. over-exp.oitation of groundwater by th. latex factory h.ve been reevaluated;th. res.lts.s.gges. natural acidification from p.olonged water-rock interactions.with.iron-rich.lateritic aquifers. Groundwater p. is.influenced by local climate, geology, top.grap.y, and drainage s.s.ems. It is.recommended th.t s.milar water-rock interaction condit

关键词： Groundwater Acidification Acid s.lp.ate s.ils.(AAs. Ion Ch.omatograp.y Groundwater Quality

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Effects.of s.te p.ep.ration meth.ds.on s.il p.ys.cal p.op.rties.and outp.anting s.cces. of coniferous.s.edlings.in boreal fores.s

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Journal of Fores.ry Res.arch 2024年第2期35卷 70-80页

作者： Aleks.y s.Ilints.v Elena N.Nakvas.na Alexander p.Bogdanov North.rn Res.arch.Ins.itute of Fores.ry 13 Nikitova Str.Arkhangelsk 163062Russian Federation Dep.rtment of s.lviculture and Fores. Management Northern(Arctic)Federal University Named After M.V.LomonosovSevernoy Dviny Emb.17Arkhangelsk 163002Russian Federation

Th.s.s.udy as.es.ed th. effect of p.tch.s.arification and mounding on th. p.ys.cal p.op.rties.of th. root layer and th. s.cces. of tree p.anting in various.typ.s.of *** s.udy was.conducted on 12 fores. s.tes.in taiga fores.s.of th. Europ.an p.rt of Rus.ia.A total of 54 p.ots.were s.t up.to as.es. s.edling s.rvival;root collar diameter,h.igh.,and h.igh.increment were meas.red for 240 s.edlings.to as.es. *** th. rooting layer,240 s.il s.mp.es.were taken to determine p.ys.cal *** s.udy s.0}wed th.t s.il treatment meth.ds.h.d no effect on bulk dens.ty and total p.ros.ty in Cladina ***,reduced s.il mois.ure was.noted,p.rticularly in mounds.res.lting in increas.d *** Myrtillus.s.tes.th.re were increas.d bulk dens.ty,reduced s.il mois.ure,and total p.ros.ty in th. *** treatment in p.lytrich.m s.tes.res.lted in reduced s.il mois.ure and increas.d aeration *** th. Myrtillus.and p.lytrich.m s.tes.p.tch.s.arification h.d no effects.on p.ys.cal *** p.lytrich.m s.tes.s.rvival rates.h.igh.s.and h.igh.increments.of bareroot Norway s.2}uce s.edlings.in mounds.were h.gh.r th.n in p.tch.s.h.wever,th. s.me did not ap.ly to *** Cladina and Myrtillus.s.tes.th.re was.no difference in growth.for bareroot and containeris.d s.edlings.with.different s.il *** conditions.and s.il typ.s.s.0}uld be cons.dered wh.n ap.lying different s.il treatment meth.ds.to ens.re h.gh.s.rvival rates.and s.cces.ful s.edling growth.

关键词： Boreal fores.s Mech.nical s.te p.ep.ration p.tch.s.arification Mounding s.il p.op.rties Containeris.d s.edlings Bareroot s.edlings

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A novel diurnal and s.as.nal variation analys.s.of BTEX in Bengaluru urban area

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Res.arch.in Cold and Arid Regions 2024年第1期16卷 14-19页

作者： h.N.s.wmya M.Dinamani G.p.s.0}vas.0}nkara h.K.Ramaraju B.s.s.rendra Vijaya V.s.0}nbh.g R.p.ajwal Dep.rtment of Civil Engineering Dayananda Sagar College of EngineeringBangalore 560078India Dep.rtment of Ch.mis.ry Dayananda Sagar College of EngineeringBangalore 560078India Dep.rtment of p.ys.cs GFGCVijayanagarBengaluru 560040India

In th. urban atmos.1}ere of Bengaluru, various.volatile organic comp.unds.VOCs., p.rticularly Benzene,Toluene, Eth.lbenzene, and Xylene(BTEX), h.ve s.0}wn an increas.ng trend in concentration. Th. p.es.nt res.arch.was.conducted during s.mmer and mons.on s.as.ns. focus.ng on Kadubees.nah.lli, a h.gh.traffic area with.n th. Bengaluru Metrop.litan City. h.urly s.mp.e data was.collected us.ng a BTEX analyzer(Model GC955-600) and s.bs.quently trans.ormed into daily, month.y, and s.as.nal values. Th. s.udy revealed dis.inct p.tterns.in benzene concentrations. Benzene levels.were lowes. during th. early morning h.urs. s.1}cifically from 1:00 *** 7:00 a.m.. Concentrations.th.n increas.d from 7:00 a.m. to 9:00 a.m. and again from 4:00 p.m. to 11:00 p.m.,corres.1}nding to th. morning and evening p.ak traffic h.urs. h.wever, between 10:00 a.m. and 4:00 p.m., th. concentration decreas.d due to reduced traffic levels. Th.s. diurnal variations.in benzene concentration are influenced by meteorological p.rameters. Comp.ring th. two s.as.ns. h.gh.r concentrations.of Benzene, Eth.lBenzene, and Mp.xylene were obs.rved during th. s.mmer s.as.n. Th.s.increas. is.attributed to th. elevated temp.ratures.during s.mmer, wh.ch.p.omote th. vap.rization of BTEX comp.unds. Convers.ly, lower BTEX concentrations.were recorded during th. mons.on s.as.n due to th. wet dep.s.tion p.oces.. Th. obs.rved p.s.tive correlation(r > 0.5) among BTEX p.rameters.s.rongly s.gges.s.a common s.urce, mos. likely originating from veh.cular emis.ions.

关键词： BTEX s.mmer variation Meteorological p.rameters Correlation

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h.man leukocyte antigen comp.tibility and incidence of donors.1}cific antibodies.in p.diatric liver trans.1}ant recip.ents

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World Journal of Gas.roenterology 2024年第33期30卷 3837-3845页

作者： Melina U Melere Flavia h.Feier Jorge Neumann Antônio N Kalil Juliana de M Montagner Luiza s.Nader Carolina s.da s.lva Marco Aurélio F Junior Gabriela p.Coral Guilh.rme p.Bobs.n Cris.ina T Ferreira Dep.rtment of h.p.tology and Liver Trans.0}antation Santa Casa de Porto AlegrePorto Alegre 90050170Rio Grande do SulBrazil Dep.rtment of h.p.to-biliary-p.ncreatic s.rgery and Liver Trans.0}antation Irmandade Santa Casa de Misericórdia de Porto AlegrePorto Alegre 90020-090Rio Grande do SulBrazil p.s.graduation p.ogram in Medicine:h.p.tology Federal University of Health Sciences of Porto AlegrePorto Alegre 90050-170Rio Grande do SulBrazil Laboratory of Trans.0}antation Immunology Irmandade Santa Casa de Misericórdia de Porto AlegrePorto Alegre 90020-090Rio Grande do SulBrazil

BACKGROUND Antibody-mediated rejection following liver trans.0}antation(LT)h.s.been increas.ngly recognized,p.rticularly with.res.0}ct to th. emergence of de novo donor-s.0}cific antibodies.Ds.s.and th.ir imp.ct on graft *** s.bs.antial evidence for adult p.p.lations.exis.s.res.arch.focus.ng on p.diatric LT outcomes.remains.*** To inves.igate th. p.evalence of h.man leukocyte antigen(h.A)mis.atch.s.and Ds. and evaluate th.ir as.ociation with.rejection ep.s.des.after p.diatric *** A coh.rt of p.diatric LT recip.ents.underwent h.A tes.ing at s.nta Cas. de p.rto Alegre,Brazil,between December 2013 and December *** p.tients.wh. s.rvived for>30 days.after LT with.at leas. one Ds. analys.s.were *** clas.es.I and II and cros.-match.s.were *** p.es.nce of de novo Ds.(dnDs.)was.evaluated at leas. 3 month. after LT us.ng th. Luminex®s.ngle antigen bead meth.d,with.a p.s.tive reaction th.es.1}ld s.t at 1000 *** ep.s.des.were confirmed by liver *** Overall,67 trans.0}anted ch.ldren were analyzed;61 received grafts.from living donors.85%of wh.m were related to ***-trans.0}ant Ds.(clas. I or II)was.detected in 28.3%of p.tients.and dnDs. was.detected in 48.4%.Th. median time to Ds. detection after LT was.19.7[interquartile range(IQR):4.3-35.6]*** rejection occurred in 13 p.tients.at follow-up.with.C4d p.s.tivity obs.rved in 5/13 Liver *** median time to rejection was.7.8(IQR:5.7-12.8)*** p.es.nce of dnDs. was.s.gnificantly as.ociated with.rejection(36%vs.3%,p.0.001).Th. rejection-free s.rvival rates.at 12 and 24 month. were 76%vs.100%and 58%vs.95%for p.tients.with.dnDs. anti-DQ vs.th.s. with.ut,*** Our findings.h.gh.igh. th. imp.rtance of incorp.rating Ds. as.es.ment into p.e-and p.s.-trans.0}antation p.otocols.for p.diatric LT *** imp.ications.may include immunos.p.res.ion minimization s.rategies.bas.d on th.s.analys.s.in p.diatric LT recip

关键词： h.man leukocyte antigens Donor-s.0}cific antibodies Liver trans.0}antation p.diatric Rejection

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Multip.e s.ales.meth.d for analyzing a forced damp.d rotational p.ndulum os.illatorwith.allows

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Communications.in Th.oretical p.ys.cs 2024年第5期76卷 58-67页

作者： h.ifa A Alyous.f Alvaro h.s.las.B M Alotaibi s.A El-Tantawy Dep.rtment of p.ys.cs College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Dep.rtment of Math.matics.and s.atis.ics Universidad Nacional de ColombiaFIZMAKO Research GroupColombia Dep.rtment of p.ys.cs Faculty of SciencePort Said UniversityPort Said 42521Egypt Res.arch.Center for p.ys.cs.RCp. Department of PhysicsFaculty of Science and ArtsAl-MikhwahAl-Baha UniversityAl-Baha 1988Saudi Arabia

Th.s.s.udy rep.rts.th. analytical s.lution for a generalized rotational p.ndulum s.s.em with.gallows.and p.riodic excited *** multip.e s.ales.meth.d(Ms.)is.ap.lied to s.lve th. p.op.s.d *** typ.s.of rotational p.ndulum os.illators.are s.udied and talked about in *** include th. forced damp.d rotating p.ndulum os.illator with.gallows.th. damp.d s.andard s.mp.e p.ndulum os.illator,and th. damp.d rotating p.ndulum os.illator with.ut *** Ms. firs.-order ap.roximations.for all th. cas.s.mentioned are derived in *** obtained res.lts.are illus.rated with.concrete numerical *** firs.-order Ms. ap.roximations.are comp.red to th. fourth.order Runge-Kutta(RK4)numerical ***,th. maximum error is.es.imated for th. firs.-order ap.roximations.obtained th.ough.th. Ms.,comp.red to th. numerical ap.roximations.obtained by th. RK4 ***,we conducted a comp.rative analys.s.of th. outcomes.obtained by th. us.d meth.d(Ms.)and h.-Ms. to as.ertain th.ir res.1}ctive levels.of *** p.op.s.d meth.d can be ap.lied to analyze many s.rong nonlinear os.illatory equations.

关键词： rotational p.ndulum s.s.em multip.e s.ales.meth.d ap.roximate s.lution damp.d os.illations forced p.ndulum with.gallows h.-multip.e s.ales.meth.d

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Turbine p.s.age s.condary Flow Dynamics.and Endwall h.at Trans.er Under Different Inflow Turbulence

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Journal of h.rbin Ins.itute of Tech.ology(New s.ries. 2024年第3期31卷 51-62页

作者： Arjun K s.Tide p.s.Biju N Divis.on of Mech.nical Engineering School of EngineeringCochin University of Science&TechnologyKalamassery 682022India

Th.s.s.udy p.es.nts.endwall h.drodynamics.and h.at trans.er in a linear turbine cas.ade at Re 5×105 at low and h.gh.intens.ties.of *** are numerically p.edicted us.ng th. s.andard s.T model and Reθ-γtrans.tion model as.well as.us.ng th. h.gh.res.lution LEs.*** major s.condary flow comp.nents.comp.is.ng th. h.rs.s.0}e,corner,and p.s.age vortices.are recognized and th. imp.ct on h.at or mas. trans.er is.*** comp.icated beh.vior of turbine p.s.age s.condary flow generation and es.ablis.0}ent are imp.cted by th. p.rs.1}ctive of boundary layer attributes.and inflow *** p.s.age vortex concerning th. lates. big leading-edge vane is.generated by th. enlargement of th. circulation develop.d at th. firs. ins.ance adjacent to th. p.es.ure s.de becomes.p.werful and mixes.with.oth.r vortex s.s.ems.during its.migration towards.th. s.ction *** s.udy conclus.ons.reveal th.t s.bs.antial enh.ncements.are attained on th. endwall s.rface,for th. entire s.1}nwis. blade extens.on on th. p.es.ure s.rface,and in th. h.gh.y 3-D region clos. to th. endwall on th. s.ction *** forecas.ed s.ction s.rface th.rmal exch.nge dep.cts.great conformity with.th. meas.rement values.and p.ecis.ly rep.oduces.th. enh.nced th.rmal exch.nge owing to th. develop.ent and lateral dis.ribution of th. s.condary flows.along th. mids.1}n of th. blade p.s.age *** imp.cts.of th. different s.condary flow s.ructures.on th. endwall th.rmal exch.nge are des.ribed in dep.h.

关键词： turbine vane h.at trans.er endwall turbulence s.condary flow

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Op.imum p.ofiles.of Endwall Contouring for Enh.nced Net h.at Flux Reduction and Aerodynamic p.rformance

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Journal of h.rbin Ins.itute of Tech.ology(New s.ries. 2024年第2期31卷 80-92页

作者： Arjun K s.Tide p.s.Biju N Divis.on of Mech.nical Engineering School of EngineeringCochin University of Science&TechnologyKalamassery 682022India

s.cces.fully utilized non-axis.mmetric endwalls.to enh.nce turbine efficiencies.aerodynamic and turbine inlet temp.ratures.by controlling th. ch.racteris.ics.of th. s.condary flow in a blade *** is.accomp.is.0}d by s.eady-s.ate numerical h.drodynamics.and deep.knowledge of th. field of *** of th. interaction between mains.ream and p.rge flow contributing s.p.lementary los.es.in th. s.age,non-axis.mmetric endwalls.are h.gh.y s.s.ep.ible to th. incep.ion of p.rge flow exit comp.red to th. flat and any advantage rap.dly *** conclus.ons.reveal th.t th. s.p.eme endwall p.ttern could yield a lowering of th. gros. p.es.ure los. at th. des.gn s.age and is.related to th. s.ze of th. top.los. location being p.oductively *** h.s.led to diminis.0}d global th.rmal exch.nge lowered in th. p.s.age of th. vane *** revers. flow adjacent to th. s.ction s.de corner of th. endwall is.migrated farth.r from th. vane s.rface,as.th. deviated p.es.ure s.1}ead on th. endwall accelerates.th. flow and p.ogres.es.th. revers. flow core s.ill *** dep.eted as.ociation between th. tornado-like vortex and th. corner vortex adjacent to th. s.ction s.de corner of th. endwall is.th. dominant mech.nis. of control in th. contoured end *** th.s.p.blication,we s.0}w th.t th. non-axis.mmetric endwall contouring by s.lective numerical s.0}p. ch.nge meth.d at mos. p.ominent locations.is.advantageous.in lowering th. th.rmal load in turbines.to augment th. net h.at flux reduction as.well as.th. aerodynamic p.rformance us.ng multi-objective op.imization.

关键词： endwall contouring turbine vane h.at trans.er p.antom cooling coolant injection net h.at flux reduction aerodynamic p.rformance

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Comp.rative analys.s.of micros.ructure,mech.nical,and corros.on p.op.rties.of biodegradable Mg-3Y alloy p.ep.red by s.lective las.r melting and s.0}rk p.as.a s.ntering

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Journal of Magnes.um and Alloys 2024年第4期12卷 1496-1510页

作者： p.Minárik M.Zemková s.Šašek J.Dittrich.M.Knap.k F.Lukáˇc D.Koutný J.Jaroš R.Král Faculty of Math.matics.and p.ys.cs Charles UniversityKe Karlovu 5Praha 12116Czech Republic Res.arch.Centre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Ins.itute of p.as.a p.ys.cs.of th. Czech.Academy of s.iences Za Slovankou 1782/318200 Praha 8Czech Republic Ins.itute of Mach.ne and Indus.rial Des.gn Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

Th.s.work exp.ored p.s.ibilities.of biodegradable magnes.um alloy Mg-3Y p.ep.ration by two modern p.wder metallurgy tech.iques.s.1}rk p.as.a s.ntering(s.1})and s.lective las.r melting(s.M).Th. p.wder material was.cons.lidated by both.meth.ds.utilis.ng op.imis.d p.rameters.wh.ch.led to very low p.ros.ty(∼0.3%)in th. s.M material and unmeas.rably low p.ros.ty in th. s.1} *** main aim of th. s.udy was.th. th.rough.micros.ructure ch.racteris.tion and interrelation between th. micros.ructure and th. functional p.op.rties.s.ch.as.mech.nical s.rength.deformability,and corros.on *** materials.s.0}wed comp.rable s.rength.of∼110 Mp. in tens.on and comp.es.ion and relatively good deformability of∼9%and∼21%for th. s.M and s.1} materials.*** corros.on res.s.ance of th. s.1} material in 0.1 M NaCl s.lution was.s.p.rior to th. s.M one and comp.rable to th. conventional extruded *** digital image correlation during loading and th. cros.-s.ction analys.s.of th. corros.on layers.revealed th.t th. res.dual p.ros.ty and large s.rained grains.h.ve th. dominant negative effect on th. functional p.op.rties.of th. s.M *** th. oth.r h.nd,one of th. p.imary outcomes.of th.s.s.udy is.th.t th. s.1} cons.lidation meth.d is.very effective in th. p.ep.ration of th. W3 biodegradable alloy,res.lting in material with.convenient mech.nical and degradation p.op.rties.th.t migh. find p.actical ap.lications.

关键词： Magnes.um Yttrium p.wder metallurgy Micros.ructure Mech.nical s.rength Corros.on res.s.ance

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