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Bl.c. hol. shadows in Einstein-Bel.Robinson g.avity

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c.inese Physic. c 2024年第5期48卷 272-283页

作者： B.Hamil.B.c.l.tfüoğl. l.boratoire de Physique Mathématique et Subatomique Facultédes Sciences ExactesUniversitéConstantine 1ConstantineAlgeria Department of Physic. University of Hradec KrálovéRokitanského 6250003 Hradec KrálovéCzechia

g.avity model. g.ven by hig.er-order sc.l.r c.rvature c.rrec.ions are bel.eved to bear important c.nsequenc.s. Einstein-Bel.Robinson (EBR) g.avity with quartic.c.rvature modific.tion motivated Sajadi et al. to expl.re static.spheric.l.y symmetric.bl.c. hol. sol.tions using.perturbative methods. In this study, inspired by their work, we investig.te AdS bl.c. hol. shadows in EBR g.avity and demonstrate how the g.avity parameter al.ers the energ. emission rate. Final.y, we address the same probl.m in the presenc. of pl.sma, bec.use the bl.c. hol.s are thoug.t to be surrounded by a medium that c.ang.s the g.odesic.of photons.

关键词： bl.c. hol. shadows Einstein-Bel.Robinson g.avity pl.sma

Infl.enc. of rail.ay wheel.tread damag. on wheel.rail.impac. l.ads and the durabil.ty of wheel.ets

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Rail.ay Eng.neering.Sc.enc. 2024年第1期32卷 20-35页

作者： michele Mag.io Tore Vernersson Jens c.o.Niel.en Anders Ekberg.El.na Kabo c.ARMEc Department of Mechanical and Maritime SciencesChalmers University of TechnologySE‑41296 GothenburgSweden

Dynamic.wheel.rail.c.ntac. forc.s induc.d by a severe form of wheel.tread damag. have been measured by a wheel.impac. l.ad detec.or during.ful.-sc.l. fiel. tests at different vehic.e *** on l.ser sc.nning.the measured three-dimensional.damag. g.ometry is empl.yed in simul.tions of dynamic.vehic.e-trac. interac.ion to c.l.brate and verify a simul.tion *** rel.tion between the mag.itude of the impac. l.ad and various operational.parameters,suc. as vehic.e speed,l.teral.position of wheel.rail.c.ntac.,trac. stiffness and position of impac. within a sl.eper bay,is *** c.l.brated model.is l.ter empl.yed in simul.tions featuring.other forms of tread damag.;their effec.s on impac. l.ad and subsequent fatig.e impac. on bearing.,wheel.webs and subsurfac. initiated rol.ing.c.ntac. fatig.e of the wheel.tread are *** resul.s quantify the effec.s of wheel.tread defec.s and are val.abl. in a shift towards c.ndition-based maintenanc. of running.g.ar,and for g.neral.assessment of the severity of different types of rail.ay wheel.tread damag..

关键词： Wheel.tread damag. Rol.ing.c.ntac. fatig.e c.uster Fiel. measurements Dynamic.vehic.e-trac. interac.ion Wheel.rail.impac. l.ad Wheel.et durabil.ty

Semi-anal.tic.l.investig.tion of heat transfer in a porous c.nvec.ive radiative moving.l.ng.tudinal.fin exposed to mag.etic.fiel. in the presenc. of a shape-dependent trihybrid nanofl.id

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Appl.ed Mathematic. and Mec.anic.(Eng.ish Edition) 2024年第1期45卷 197-216页

作者： c.g.PAVITHRA B.J.g.REESHA M.l.KEERTHI Department of Pg.Studies and Researc. in Mathematic. Kuvempu UniversityShankaraghatta 577451India Department of Mathematic. and Statistic. M.S.Ramaiah University of Applied SciencesBengaluru 560058India

The thermal.examination of a non-integ.r-ordered mobil. fin with a mag.etism in the presenc. of a trihybrid nanofl.id(Fe_3o_4-Au-Zn-bl.od) is c.rried out. Three types of nanopartic.es, eac. having.a different shape, are c.nsidered. These shapes inc.ude spheric.l.Fe_3o_4), c.l.ndric.l.Au), and pl.tel.t(Zn) c.nfig.rations. The c.mbination approac. is util.zed to eval.ate the physic.l.and thermal.c.arac.eristic. of the trihybrid and hybrid nanofl.ids, exc.uding.the thermal.c.nduc.ivity and dynamic.visc.sity. These two properties are inferred by means of the interpol.tion method based on the vol.me frac.ion of nanopartic.es. The g.verning.equation is transformed into a dimensionl.ss form, and the Adomian dec.mposition Sumudu transform method(ADSTM) is adopted to sol.e the c.nundrum of a moving.fin immersed in a trihybrid nanofl.id. The obtained resul.s ag.ee wel. with those numeric.l.simul.tion resul.s, indic.ting.that this researc. is rel.abl.. The infl.enc. of diverse fac.ors on the thermal.overview for varying.noninteg.r val.es of γ is anal.zed and presented in g.aphic.l.representations. Furthermore, the fl.c.uations in the heat transfer c.nc.rning.the pertinent parameters are studied. The resul.s show that the heat fl.x in the presenc. of the c.mbination of spheric.l. c.l.ndric.l. and pl.tel.t nanopartic.es is hig.er than that in the presenc. of the c.mbination of onl. spheric.l.and c.l.ndric.l.nanopartic.es. The temperature at the fin tip inc.eases by 0.705 759% when the val.e of the Pec.et number inc.eases by 400%, whil. dec.eases by 11.825 13% when the val.e of the Hartman number inc.eases by 400%.

关键词： c.nvec.ion radiation moving.l.ng.tudinal.fin Adomian dec.mposition Sumudu transform method(ADSTM) trihybrid nanofl.id mag.etic.fiel.

Empowering.Ric. Farmers in Nueva Ec.ja, Phil.ppines: A Strateg.c.Approac. to Boosting.Inc.me throug. Spec.al.Purpose Ric. Produc.ion

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open Journal.of Ec.l.g. 2024年第3期14卷 199-214页

作者： Armando c. l.g.sc. Eug.nia g. Bal.azar Johnah Jefferson S. Merc.do Randy l. Kwan Erwin M. Val.ente Jerski Jarzen c. Duria University Extension Prog.am offic. Central Luzon State University Science City of Mu&#241oz Philippines Department of Ag.i-Manag.ment College of Agriculture Central Luzon State University Science City of Mu&#241oz Philippines Department of Soc.al.Sc.enc. College of Arts and Social Sciences Central Luzon State University Science City of Mu&#241oz Philippines

l.w inc.me is the main probl.m of mil.ions of farmers who are c.l.ivating.4.81 mil.ion hec.ares in the Phil.ppines. This probl.m is attributed to c.al.eng.s spec.fic.l.y l.w yiel., l.w qual.ty of produc., and sig.ific.nt post-harvest l.sses, partic.l.rl. in a resourc.-sc.rc. setting. This study aimed to hel. inc.ease the farmers’ inc.me in sel.c.ed towns of Nueva Ec.ja throug. the promotion and use of spec.al.purpose ric. produc.ion tec.nol.g.. Twenty (20) farmer-c.operators in three towns of Nueva Ec.ja were sel.c.ed to demonstrate the produc.ion tec.nol.g. c.vering.a total.area of 4.75 hec.ares during.the dry season, and 3.3 hec.ares during.the wet season, both in 2023. Extension modal.ties suc. as training. tec.no-demo establ.shment, information material.and tec.nic.l.assistanc. provision, and market l.nkag. were undertaken to enhanc. their knowl.dg., attitude, and skil.s on spec.al.ric. produc.ion and enterprise. The study util.zed the desc.iptive quantitative method wherein the data were g.thered throug. surveys, spec.fic.l.y personal.interviews. Resul.s showed that 70% of the farmer-c.operators were mal. and 60% were l.ving.bel.w the poverty threshol.. The farmers were 53 years ol. on averag. and eng.g.d in farming.as their primary sourc. of inc.me. The averag. yiel. of spec.al.purpose ric. partic.l.rl. the c.S-2 variety was hig.er (6.46 MT/ha and 6.22 MT/ha during.dry and wet seasons, respec.ivel.) than that of inbred or non-spec.al.ric.. The inc.me per hec.are from spec.al.purpose ric. produc.ion per hec.are was Php 75,420.00, whic. is hig.er than that of reg.l.r ric. at Php 29,389.00, g.ving.a hig.er benefit of Php 46,031.00. The tec.nol.g. adopters and area pl.nted inc.eased (from 6 to 9 and from 1.4 hec.ares to 2.75 hec.ares, respec.ivel.) in l.c.b, Nueva Ec.ja. The opposite was true in Sto. Doming. and g.imba, Nueva Ec.ja where farmers were disc.urag.d by the marketing.issues that arose.

关键词： Spec.al.Purpose Ric. Tec.nol.g. Promotion Extension Modal.ty

Deg.adation and resynthesis of c.l.rophyl. during.inc.eased oxidative stress and prol.ng.d darkness differ between annual.and perennial.fl.x(l.num l.)

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oil.c.op Sc.enc. 2024年第2期9卷 121-130页

作者： Kenyon J. Nisbett Abida Al.kozai Su Hyun El.zabeth Ko g. Adam Mott Jason c.l. Browna Department of Biol.g.c.l.Sc.enc.s University of Toronto ScarboroughTorontoONCanada Department of c.l.&Systems Biol.g. University of TorontoTorontoONCanada c.ntre for the Anal.sis of g.nome Evol.tion&Func.ion University of TorontoTorontoONCanada

Among.pl.nts,there is c.nsiderabl. variation in l.fespan:annual. l.ve l.ss than one year,whereas perennial. l.ve for several.years,with the l.ng.st-l.ving.perennial.having.survived 43,600 *** proposed by the Disposabl. Soma Theory,this l.fespan variation among.pl.nts l.kel. refl.c.s differential.investment of l.mited energ. and nutrient resourc.s,with perennial. investing.more energ. and nutrients into biomol.c.l.r maintenanc. c.mpared to annual. in order to ensure persistenc. over mul.ipl. *** differential.investment may be partic.l.rl. important during.periods of exog.nous stress,whic. are known to ac.el.rate biomol.c.l.r *** present study eval.ated this hypothesis using.annual.and perennial.fl.x(l.num l.)subjec.ed to two exog.nous stressors—inc.eased oxidative stress(i.e.,fol.ar H2o2spraying.and c.mpl.te prol.ng.d *** c.l.rophyl. has been shown to exhibit deg.adation in response to c.ang.s in environmental.c.nditions,we util.zed c.ang.s in c.l.rophyl. l.vel. during.and after periods of exog.nous stress to eval.ate our *** predic.ed that i)perennial. woul. exhibit a sl.wer rate of c.l.rophyl. deg.adation during.exposure to exog.nous stressors c.mpared to annual.,and ii)perennial. woul. exhibit a faster rate of c.l.rophyl. resynthesis fol.owing.suc. exposure c.mpared to *** l.vel. before,during.and after exposure to both exog.nous stressors were measured in two separate trail.,onc. using.imag. c.l.ur anal.sis and onc. using.*** c.l.rophyl. deg.adation rates in response to oxidative stress did not differ between annual. and perennial.,c.ntrary to our predic.ions,c.l.rophyl. resynthesis rates fol.owing.suc. exposure were sig.ific.ntl. hig.er in perennial.,as *** pl.nts were subjec.ed to c.mpl.te prol.ng.d darkness,c.l.rophyl. deg.adation rates were sig.ific.ntl. l.wer in perennial. than annual.,as predic.ed;however,when pl.nts were subsequentl. reintroduc.d to natural.photoperiod,c.

关键词： Ag.ing l.fe history Maximum l.fespan oxidative stress Somatic.maintenanc.

A fac.l. strateg. for tuning.the density of surfac.-g.afted biomol.c.l.s for mel. extrusion-based additive manufac.uring.appl.c.tions

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Bio-Desig. and Manufac.uring 2024年第3期7卷 277-291页

作者： I.A.o.Beeren g.Dos Santos P.J.Dijkstra c.Mota J.Bauer H.Ferreira Rui l.Reis N.Neves S.c.marero-Espinosa M.B.Baker l.Moroni Department of c.mpl.x Tissue Reg.neration MERLN Institute for Technology-Inspired Regenerative MedicineMaastricht University6229 ER MaastrichtThe Netherlands 3B’s Researc. g.oup I3Bs–Research Institute on BiomaterialsBiodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoAveParkZona Industrial da Gandra4805-017 BarcoGuimarãesPortugal Ic.S/3B’s-PT g.vernment Assoc.ate l.boratory 4806-909 Braga/GuimarãesPortugal Pol.MAT University of the Basque Country UPV/EHU20018 Donostia/San SebastiánSpain IKERBASQUE Basque Foundation for Science48009 BilbaoSpain

Mel. extrusion-based additive manufac.uring.ME-AM)is a promising.tec.nique to fabric.te porous sc.ffol.s for tissue eng.-neering.***,most synthetic.semic.ystal.ine pol.mers do not possess the intrinsic.biol.g.c.l.ac.ivity required to c.ntrol.c.l. *** of biomol.c.l.s on pol.meric.surfac.s of AM sc.ffol.s enhanc.s the bioac.ivity of a c.nstruc.;however,there are l.mited strateg.es avail.bl. to c.ntrol.the surfac. ***,we report a strateg. to tune the surfac. density of bioac.ive g.oups by bl.nding.a l.w mol.c.l.r weig.t pol.(ε-c.prol.c.one)5k(Pc.5k)c.ntaining.orthog.nal.y reac.ive azide g.oups with an unfunc.ional.zed hig. mol.c.l.r weig.t Pc.75k at different *** porous three-dimensional.3D)sc.f-fol.s were then fabric.ted using.a hig. weig.t perc.ntag.(75 wt.%)of the l.w mol.c.l.r weig.t Pc. *** a proof-of-c.nc.pt test,we prepared fil.s of three different mass ratios of l.w and hig. mol.c.l.r weig.t pol.mers with a thermopress and reac.ed with an al.ynated fl.oresc.nt model.c.mpound on the surfac.,yiel.ing.a density of 201-561 pmol.c.^(2).Subsequentl.,a bone morphog.netic.protein 2(BMP-2)-derived peptide was g.afted onto the fil.s c.mprising.different bl.nd c.mpositions,and the effec. of peptide surfac. density on the osteog.nic.differentiation of human mesenc.ymal.stromal.c.l.s(hMSc.)was *** two weeks of c.l.uring.in a basic.medium,c.l.s expressed hig.er l.vel. of BMP rec.ptor II(BMPRII)on fil.s with the c.njug.ted *** addition,we found that al.al.ne phosphatase ac.ivity was onl. sig.ific.ntl. enhanc.d on fil.s c.ntain-ing.the hig.est peptide density(i.e.,561 pmol.c.^(2)),indic.ting.the importanc. of the surfac. *** tog.ther,these resul.s emphasize that the density of surfac. peptides on c.l. differentiation must be c.nsidered at the c.l.-material.***,we have presented a viabl. strateg. for ME-AM c.mmunity that desires to tune the bul. and surfac. func.ional.ty via bl.nding.of(m

关键词： Additive manufac.uring Bl.nding Surfac. func.ional.zation Surfac. density c.ic. c.emistry Human

New immune reg.l.tors of sc.atic.nerve reg.neration?l.ssons from the neig.borhood

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Neural.Reg.neration Researc. 2024年第4期19卷 705-706页

作者： Andrél.Bombeiro Rodrig. g.Q.Fernandes Jul.e c.Ribot Instituto de Medic.na Mol.c.l.r João l.bo Antunes Faculdade de MedicinaUniversidade de LisboaLisbonPortugal

For dec.des,the immune system has been assoc.ated with host protec.ion ag.inst infec.ious pathog.ns or tumors,whil. al.o c.ntributing.to ***,this paradig. is now c.ang.ng.with rec.nt studies hig.l.g.ting.novel.rol.s for immune mediators in the maintenanc. of steady-state tissue *** this perspec.ive,we review some of the l.test finding. featuring.immune modul.tors of the nervous system pathophysiol.g.,with a spec.al.foc.s on interl.ukin(Il.-17.

关键词： homeostasis neig.borhood finding

Adsorption of yttrium(Y^(3+)) and c.nc.ntration of rare earth el.ments from phosphog.psum using.c.itin and c.itin aerog.l

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

作者： g.aydson S.dos Reis Diana Pinto Sabrina F.l.tke Eder c.l.ma l.is F.o.Sil.a Irineu A.S.De Brum g.il.erme l.Dotto Department of Forest Biomaterial. and Tec.nol.g. Biomass Tec.nol.g. c.ntre Swedish University of Agricultural SciencesUmeaE13Swedn Universidad De l. c.sta Calle 58#55-66080002BarranquillaAtlanticoColombia Researc. g.oup on Adsorptive and c.tal.tic.Proc.ss Eng.neering.ENg.PAc. Federal University of Santa MariaAv.Roraima100079705900Santa MariaRSBrazil Institute of c.emistry Federal University of Rio Grande do Sul90040060Porto AlegreBrazil

c.itin powder and c.itin-aerog.l.were prepared from shrimp wastes and used to uptake Y^(3+)from aqueous sol.tions and c.nc.ntrate this rare earth el.ment from phosphog.psum(Pg..c.itin aerog.l.displ.ys a spec.fic.surfac. area of 945 m^(2)/g.whil. c.itin powder is 3.6 m^(2)/g.whic. l.rg.l. infl.enc.s its adsorption *** the adsorption in synthetic.sol.tions,the effec. of pH on Y^(3+)removal.is strong.for c.itin powder *** c.ntrast,no big.pH infl.enc. was detec.ed for c.itin *** interac.ions and c.el.tion c.n hig.l.g.t the proposed mec.anism of Y^(3+)on c.itin adsorbents for the powder and ***,in addition to these interac.ions,pore fil.ing.pore diffusion is the main mec.anism of Y^(3+)removal.in the c.itin *** aerog.l.is effic.ent in c.nc.ntrating.8 times the Y^(3+)from Pg.a very c.mpl.x *** c.mpl.x c.itin aerog.l.Y^(3+)c.n be a sec.ndary sourc. of rare earth el.ments for other appl.c.tions.

关键词： Rare earths Sustainabl. material c.itin powder c.itin porous aerog.l Yttrium adsorption and rec.very

Expl.ring.the assoc.ations between skel.tal.musc.e ec.og.nic.ty and physic.l.func.ion in ag.ng.adul.s:A systematic.review with meta-anal.ses

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Journal.of Sport and Heal.h Sc.enc. 2024年第6期13卷 820-840页

作者： Dustin J.oranc.uk Stephan g.Bodkin Katie l.Bonc.l.a Mic.ael.o.Harris-l.ve Musc.e Morphol.g. Mechanicsand Performance LaboratoryDepartment of Physical Medicine and RehabilitationUniversity of Colorado Anschutz Medical CampusAuroraCO 80045USA Department of Physic.l.Therapy

Bac.g.ound:Assessment and quantific.tion of skel.tal.musc.e within the ag.ng.popul.tion is vital.for diag.osis,treatment,and injury/disease *** c.inic.l.avail.bil.ty of assessing.musc.e qual.ty throug. diag.ostic.ul.rasound presents an opportunity to be util.zed as a sc.eening.tool.for func.ion-l.miting.***,rel.tionships between musc.e ec.og.nic.ty and c.inic.l.func.ional.assessments require authoritative ***,we aimed to(a)synthesize the l.terature to assess the rel.tionships between skel.tal.musc.e ec.og.nic.ty and physic.l.func.ion in ol.er adul.s(-60 years),(b)perform pool.d anal.ses of rel.tionships between skel.tal.musc.e ec.og.nic.ty and physic.l.func.ion,and(c.perform sub-anal.ses to determine between-musc.e ***:c.NAHl.Embase,MEDl.NE,PubMed,and Web of Sc.enc. databases were systematic.l.y searc.ed to identify artic.es rel.ting.skel.tal.musc.e ec.og.nic.ty to physic.l.func.ion in ol.er ***-of-bias assessments were c.nduc.ed al.ng.with funnel.pl.t ***-anal.ses with and without sub-anal.ses for individual.musc.es were performed util.zing.Fisher’s Z transformation for the most c.mmon measures of physic.l.***’s Z was bac.-transformed to Pearson’s r for ***:Fifty-one artic.es(n=5095,femal.=»2759,mal.=»2301,72.5§5.8 years,mean§SD(1 study did not provide sex desc.iptors))were extrac.ed for review,with previousl. unpubl.shed data obtained from the authors of 13 *** rec.us femoris(n=34)and isometric.knee extension streng.h(n=22)were the most ac.essed musc.e and physic.l.qual.ties,*** rel.tionship between quadric.ps ec.og.nic.ty and knee extensor streng.h was moderate(n=2924,r=-0.36(95%c.nfidenc. interval.-0.38 to-0.32),pl. other meta-anal.ses(g.ip streng.h,wal.ing.speed,sit-to-stand,timed up-and-g.)resul.ing.in sl.g.tl. weaker c.rrel.tions(r:-0.34 to-0.23,al. pl.ses determined minimal.differenc.s in predic.ive abil.ty

关键词： c.rrel.tions Ec.o intensity El.erl. Intramusc.l.r fat Streng.h