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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

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

g.obal.preval.nc. and g.nder inequal.ties in at l.ast 60 min of sel.-reported moderate-to-vig.rous physic.l.ac.ivity 1 or more days per week:An anal.sis with 707,616 adol.sc.nts

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Journal.of Sport and Heal.h Sc.enc. 2024年第5期13卷 709-716页

作者： Raphael.H.o.Araujo Andrúo.Wernec. c.aric. l.martins l.c.ana l.Barboza Rafael.m.Tassitano Nic.l.s Ag.il.r-Farias g.l.ar m.Jesus Robinson Ramírez-Véel.z Riki Tesl.r Adewal. l.oyeyemi El.en c.m.Sil.a Robert g.Weaver mark S.Trembl.y Javier Brazo-Sayavera g.ég.re I.miel.e Danil. R.P.Sil.a g.aduation Prog.am in Heal.h Sc.enc.s Londrina State University(UEL)Londrina 86057-970Brazil c.nter for Epidemiol.g.c.l.Researc. in Nutrition and Heal.h Department of NutritionSchool of Public HealthUniversidade de Sao Paulo(USP)Sao Paulo 01246-904Brazil Department of Physic.l.Educ.tion Federal University of ParaıbaParaıba 58051-900Brazil Researc. c.ntre of Physic.l.Ac.ivity Health and LeisureFaculty of SportsLaboratory for Integrative and Translational Research in Population Health(ITR)University of PortoPorto 4500Portugal Postg.aduate Prog.am in Physic.l.Educ.tion University of BrasıliaBrasılia 70910-900Brazil Department of Kinesiol.g. and c.mmunity Heal.h University of Illinois at Urbana-ChampaignChampaignIL 61801-3841USA Department of Physic.l.Educ.tion Sports and RecreationUniversidad de La FronteraTemuco 4680000Chile Department of Heal.h State University of Feira de SantanaFeira de Santana 44036-900Brazil Navarrabiomed Hospital Universitario de Navarra(HUN)Navarra Institute for Health Research(IdiSNA)Universidad Publica de Navarra(UPNA)Pamplona 31006Spain Fac.l.ad de c.enc.as de l. Educ.c.on Unidad Central del Valle del Cauca(UCEVA)TuluaValle del Cauca 763022Colombia Heal.h manag.ment Department Faculty of Heath sciencesAriel UniversityAriel 40700Israel c.l.eg. of Heal.h Sol.tions Arizona State UniversityPhoenixAZ 85004USA Arnol. Sc.ool.of Publ.c.Heal.h University of South CarolinaColumbiaSC 29208USA Heal.hy Ac.ive l.ving.and obesity Researc. g.oup Children’s Hospital of Eastern Ontario Research InstituteOttawaON K1H 8L1Canada Department of Pediatric. University of OttawaOttawaON K1H 8L1Canada Department of Heal.h Sc.enc.s Carleton UniversityOttawaON K1S 5B6Canada Department of Sports and c.mputer Sc.enc. Universidad Pablo de Olavide(UPO)Seville 41013Spain c.ntro Universitario Reg.onal.Noreste Universidad de la RepublicaRivera 40000Uruguay Sc.ool.of Publ.c.Heal.h The University of QueenslandBrisbaneQLD 4006Australia Department of Physic.l.Educ.tion

Bac.g.ound:g.idel.nes rec.mmend that adol.sc.nts shoul. ac.umul.te an averag. of 60 min per day of moderate-to-vig.rous physic.l.ac.ivity(mVPA).However,using.onl. this c.t-off c.ul. hide important *** instanc.,from a popul.tion-l.vel.point of view,inc.easing.physic.l.ac.ivity for those with no or l.w physic.l.ac.ivity c.ul. provide more heal.h benefits than inc.easing.physic.l.ac.ivity for those with intermediate ***,inc.uding.a more sensitive c.t-point of≥1 days per week c.ul. be an additional.strateg. for identifying.those with l.w ac.ess/opportunities for physic.l.ac.ivity ***,the c.rrent study aims to estimate the preval.nc. of≥60 min of mVPA≥1 days per week among.adol.sc.nts g.obal.y,and to desc.ibe any rel.vant g.nder ***:We used representative datasets from 146 c.untries/territories c.l.ec.ed between 2003 and *** was *** were g.ouped into young.r(≤14 years ol.)and ol.er(>14 years ol.)*** Poisson reg.ession model. were used to identify the rel.tive differenc.s in≥60 min of mVPA≥1 days per week between boys and g.rl.,and random-effec.s meta-anal.sis model. were used to identify the pool.d *** were stratified by c.untry and ***:Approximatel. 80%of both young.r and ol.er adol.sc.nts reported≥60 min of mVPA≥1 days per *** preval.nc. was≥94%in Europe and c.ntral.Asia and North Americ.,whil. the estimates for the other reg.ons werel.nc. of≥60 min of mVPA≥1 days per week was hig.er among.boys than g.rl.,with the l.rg.st differenc.s oc.urring.among.the ol.est adol.sc.nts(Preval.nc. ratio_(≤14y)=1.04(95%c.nfidenc. interval.95%c.)):1.03-1.04)*** ratio_(>14y)=1.09(95%c.:1.08-1.10)).c.nc.usion:Approximatel. 8 out of 10 adol.sc.nts reported ac.umul.ting.60 min of mVPA≥1 days per week,with notabl. differenc.s between *** differenc.s were observed in several.c.untries,espec.al.y among.the ol.est *** fo

关键词： g.obal.Sc.ool.based Student Heal.h Survey Heal.h Behaviour Among.Sc.ool.ag.d c.il.ren survey Inequal.ty Surveil.anc. Youth

Performanc. of evol.tionary optimized mac.ine l.arning.for model.ng.total.org.nic.c.rbon in c.re sampl.s of shal. g.s fiel.s

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Petrol.um 2024年第1期10卷 150-164页

作者： l.onardo g.l.att c.m.Saporetti l.c.ol.veira E.Pereira Department of c.mputational.and Appl.ed mec.anic. Federal University of Juiz de Fora Department of c.mputational.model.ng Polytechnic Institute Rio de Janeiro State University Petrobras Department of Stratig.aphy and Pal.ontol.g. Rio de Janeiro State University

Roc. sampl.s' Toc.c.ntent is the best indic.tor of the org.nic.matter in sourc. roc.s. The orig.n roc. sampl.s' anal.sis is used to c.l.0}l.te it manual.y by spec.al.sts. This method requires time and resourc.s bec.use it rel.es on sampl.s from many wel. interval. in sourc. roc.s. Therefore, researc. has been done to aid this effort. mac.ine l.arning.al.4}rithms c.n estimate total.org.nic.c.rbon instead of wel. l.g. and stratig.aphic.studies. In l.g.t of these efforts, the c.rrent work present a study on automating.the total.org.nic.c.rbon estimation using.mac.ine l.arning.approac.es improved by an evol.tionary methodol.g. to g.ve the model.fl.xibil.ty and prec.sion. g.netic.al.4}rithms, differential.evol.tion, partic.e swarm optimization, g.ey wol. optimization, artific.al.bee c.l.ny, and evol.tion strateg.es were used to improve mac.ine l.arning.model. to predic. Toc. The six metaheuristic. were integ.ated into four mac.ine l.arning.methods: extreme l.arning.mac.ine, el.stic.net l.near model. l.near support vec.or reg.ession, and mul.ivariate adaptive reg.ession spl.nes. c.re sampl.s from the YuDong.Nan shal. g.s fiel., l.c.ted in the Sic.uan basin, were used to eval.ate the hybrid strateg.. The finding. show that c.mbining.mac.ine l.arning.model. with an evol.tionary al.4}rithms in a hybrid fashion produc. fl.xibl. model. that ac.uratel. predic. Toc. The resul.s show that, independent of the metaheuristic.used to g.ide the model.sel.c.ion, optimized extreme l.arning.mac.ines attained the best performanc. sc.res ac.ording.to six metric.. Suc. hybrid model. c.n be used in expl.ratory g.ol.g.c.l.researc.,partic.l.rl. for unc.nventional.oil.and g.s resourc.s.

关键词： Total.org.nic.c.rbon Hybrid model. Automated mac.ine l.arning Evol.tionary al.0}rithms g.ol.g.

c.nsumer transparenc. in the produc.ion c.ain for pl.nt varieties produc.d using.new g.nomic.tec.niques

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aBIoTEc. 2024年第2期5卷 239-246页

作者： J.m.l.kasiewic. c.c.m.van de Wiel.l.A.P.l.tz m.J.m.Smul.ers Wag.ning.n University&Researc. P.O.Box 386NL-6700 AJ WageningenThe Netherlands

Pl.nts edited with new g.nomic.tec.niques(Ng.s)c.rrentl. fal. under the g.netic.l.y modified org.nisms Direc.ive(2001/18/Ec.in the European *** the proposal.of the European c.mmission,Ng. pl.nts are partial.y exempted from the reg.l.tions of this *** proposal.makes a distinc.ion between two c.teg.ries of Ng. pl.nts:Ng.-1 and ***-1 c.teg.ry pl.nts are c.nsidered equal.to pl.nts obtained throug. c.nventional.breeding.*** pl.nts wil. not be l.bel.ed for the c.nsumer,al.houg. they wil. be l.bel.ed as ***-2 c.teg.ry pl.nts may be l.bel.ed with additional.information as a positive *** of seeds of varieties made with g.ne editing.but not the produc.s,woul. mean that most steps in the produc.ion c.ain are transparent,but not the l.st step towards ***“rig.t to know”and inc.easing.knowl.dg. of g.ne-edited food is a c.mmon theme in food l.bel.ing.towards ***,we desc.ibe c.rrent l.bel.ing.reg.mes and reg.sters and how these may be appl.ed to provide transparenc. on g.ne-edited produc.s to ***,we al.o l.ok into c.nsumer studies,whic. indic.te a g.eater ac.eptanc. of g.ne-edited food among.c.nsumers,espec.al.y when additional.benefits suc. as sustainabil.ty are mentioned.

关键词： l.bel.ing New g.nomic.tec.niques c.nsumer transparenc. Pl.nt produc.s

Phase c.mposition,c.nduc.ivity,and sensor properties of c.rium-doped indium oxide

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Nano material. Sc.enc. 2024年第2期6卷 193-200页

作者： m.I.Ikim g.N.g.rasimov V.F.g.omov o.J.Il.g.usi l.I.Trakhtenberg N.N.Semenov Federal.Researc. c.nter for c.emic.l.Physic. of RAS MoscowRussia University of c.ntral.Fl.rida OrlandoFLUSA mosc.w Institute of Physic. and Tec.nol.g.(State University) DolgoprudnyMoscow RegionRussia l.monosov mosc.w State University MoscowRussia

The hydrothermal.synthesis of In_(2)o_(3)and c.o_(2)–In_(2)o_(3)is investig.ted as wel. as the properties of sensor l.yers based on these *** the synthesis of In_(2)o_(3),intermediate produc.s In(oH)_(3)and InooH are formed,whic. are the prec.rsors of stabl. c.bic.c.In_(2)o_(3))and metastabl. rhombohedral.rh-In_(2)o_(3))phases,respec.ivel..A transition from c.In_(2)o_(3)to rh-In_(2)o_(3)is observed with the addition of c.o_(2).The introduc.ion of c.rium into rh-In_(2)o_(3)resul.s in a dec.ease in the sensor response to hydrog.n,whil. it inc.eases in c.mposites based on c.In_(2)o_(3).The data on the sensor ac.ivity of the c.mposites c.rrel.te with XPS resul.s in whic. c.o_(2)c.uses a dec.ease in the c.nc.ntrations of c.emisorbed oxyg.n and oxyg.n vac.nc.es in rh-In_(2)o_(3).The reverse situation is observed in c.mposites based on c.In_(2)o_(3).c.mpared to In_(2)o_(3)and c.o_(2)–In_(2)o_(3)obtained by other methods,the synthesized c.mposites demonstrate maximum response to H_(2)at l.w temperatures by 70–100℃,and have short response time(0.2–0.5 s),short rec.very time(6–7 s),and l.ng.term stabil.ty.A model.is proposed for the dependenc. of sensitivity on the direc.ion of el.c.ron transfer between In_(2)o_(3)and c.o_(2).

关键词： c.rium oxide Indium oxide Nanoc.mposite Hydrothermal.method c.bic.phase Rhombohedral.phase Sensor response c.nduc.ivity Hydrog.n Response/rec.very time

Radioisotope produc.ion using.l.sers:From basic.sc.enc. to appl.c.tions

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matter and Radiation at Extremes 2024年第3期9卷 31-44页

作者： m.R.D.Rodrig.es A.Bonasera m.Sc.sc.ò J.A.Pérez-Hernández m.Ehret F.Fil.ppi P.l.Andreol. m.Huaul. H.l.rreur D.Sing.ppul. D.mol.oy D.Raffestin m.Al.nzo g.g.Rapisarda D.l.ttuada g.l.g.ardo c.Verona Fe.c.nsol. g.Petring. A.mc.amee m.l. c.g.ata S.Pal.erini T.c.rriere m.c.priani g.Di g.org.o g.c.istofari R.De Ang.l.s g.A.P.c.rrone D.marg.rone l.g.uffrida D.Batani P.Nic.l.i K.Batani R.l.ra l.Vol.e D.g.ul.etti S.Ag.rwal.m.Krupka S.Sing. Fa.c.nsol. c.c.otron Institute Texas A&M UniversityCollege StationTexas 77840USA l.boratori Nazional. del.Sud Istituto Nazionale di Fisica Nucleare(LNS-INFN)CataniaItaly ENEA Fusion and Technologies for Nuclear Safety and Security Department-CFrascatiItaly c.ntro de l.seres Pul.ados(c.pu) VillamayorSpain Universidad de Sal.manc. SalamancaSpain c.ntre l.sers Intenses et Appl.c.tions(c.l.A) Universitéde BordeauxCNRSCEATalenceFrance HB11 Energ. Hol.ing. Pty FreshwaterNew South WalesAustralia Sc.ool.of mathematic. and Physic. Queen’s University BelfastBelfastUnited Kingdom Dipartimento di Fisic. e Astronomia“E.majorana ”Università di CataniaCataniaItaly Fac.l.àdi Ing.g.eria e Arc.itettura Universitàdegli Studi di Enna“Kore”EnnaItaly Dipartimento di Ing.g.eria Industrial. Universitàdi Roma“Tor Vergata”RomaItaly Dipartimento di Fisic. e g.ol.g.a Universitàdegli Studi di PerugiaPerugiaItaly Istituto Nazional. di Fisic. Nuc.eare Sezione di PerugiaPerugiaItaly El. Beaml.nes Fac.l.ty the Extreme Light Infrastructure ERICDolni BrezanyCzech Republic ETSIA Universidad Politécnica de MadridMadridSpain Dipartimento Fisic. “E.Fermi”Universitàdi Pisa and INFNPisaItaly FZU–Institute of Physic. of c.ec. Ac.demy of Sc.enc.s PragueCzech Republic Institute of Pl.sma Physic. of c.ec. Ac.demy of Sc.enc.s PragueCzech Republic

The disc.very of c.irped pul.e ampl.fic.tion has l.d to g.eat improvements in l.ser tec.nol.g.,enabl.ng.energ.tic.l.ser beams to be c.mpressed to pul.e durations of tens of femtosec.nds and foc.sed to a few *** with energ.es of tens of meV c.n be ac.el.rated using.for instanc.,targ.t normal.sheath ac.el.ration and foc.sed on sec.ndary *** suc. c.nditions,nuc.ear reac.ions c.n oc.ur,with the produc.ion of radioisotopes suitabl. for medic.l.*** use of hig.-repetition l.sers to produc. suc. isotopes is c.mpetitive with c.nventional.methods mostl. based on *** this paper,we study the produc.ion of^(67)c.,^(63)Zn,^(18)F,and^(11)c.whic. are c.rrentl. used in positron emission tomog.aphy and other *** the same time,we study the reac.ions^(10)B(p,α)^(7)Be and^(70)Zn(p,4n)^(67)g. to put further c.nstraints on the proton distributions at different ang.es,as wel. as the reac.ion^(11)B(p,α)^(8)Be rel.vant for energ. *** experiment was performed at the 1 PW l.ser fac.l.ty at Veg.Ⅲin Sal.manc.,*** distributions of radioisotopes in the forward(with respec. to the l.ser direc.ion)and bac.ward direc.ions were measured using.a hig. purity g.rmanium *** resul.s are in reasonabl. ag.eement with numeric.l.estimates obtained fol.owing.the approac. of Kimura and Bonasera[*** ***.,Sec..A 637,164–170(2011)].

关键词： purity estimates bac.ward

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