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Vanil.yl.cetone attenuates cad.ium chl.rid.-ind.ced.hippocampal.d.mage and.memory l.ss through upregul.tion of nucl.ar factor erythroid.2-rel.ted.factor 2 gene and.protein expression

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Neural.Regeneration Research 2024年第12期19卷 2750-2759页

作者： Fahaid.H.A.l.Hashem Sal.h O.Bashir Amal.F.d.wood.Moutasem S.Aboonq Ismaeel.Bin-Jal.ah Abd.l.iziz M.Al.Garni Mohamed.d.Morsy d.partment of Physiol.gy College of MedicineKing Khalid UniversityAbhaSaudi Arabia d.partment of Basic Med.cal.Sciences College of MedicinePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia d.partment of Physiol.gy College of MedicineTaibah UniversityAl-Madinah Al-MunawwarahSaudi Arabia d.partment of Med.cine College of MedicineKing Khalid UniversityAbhaSaudi Arabia

Memory l.ss and.d.mentia are major publ.c heal.h concerns with a substantial.economic *** stress has been shown to pl.y a crucial.rol. in the pathophysiol.gy of hippocampal.d.mage-ind.ced.memory *** investigate whether the antioxid.nt and.anti-infl.mmatory compound.vanil.yl. cetone(zingerone) can protect against hippocampal.d.mage and.memory l.ss ind.ced.by cad.ium chl.rid.(Cd.l.(2)) ad.inistration in rats,we expl. red.the potential.invol.ement of the nucl.ar factor erythroid.2-rel.ted.factor 2(Nrf2) signal.ng pathway,which is known to mod.l.te oxid.tive stress and.*** heal. hy mal. Wistar rats were d.vid.d.into five groups:vehicl.-treated.control.,vanil.yl.cetone,Cd.l.(2),vanil.yl.cetone+ Cd.l.(2),vanil.yl.cetone+ Cd.l.(2)+ brusatol.a sel.ctive pharmacol.gical.N rf2inhibitor) *** effectivel. attenuated.Cd.l.(2)-ind.ced.d.mage in the d.ntal.gyrus of the hippocampus and.improved.the memory function assessed.by the Morris Water Maze ***,vanil.yl.cetone marked.y d.creased.the hippocampal.tissue l.vel. of infl.mmatory biomarkers(interl.ukin-6,tumor necrosis factor-α,intracel.ul.r cel. ad.esive mol.cul.s) and.apoptosis biomarkers(Bax and.cl.aved.caspase-3).The control.and.Cd.l.(2)-treated.groups treated.with va nil.yl.cetone showed.red.ced.generation of reactive oxygen species,d.creased.mal.nd.al.0}hyd. l.vel.,and.increased.superoxid. d.smutase and.gl.tathione activities,al.ng with significant el.vation of nucl.ar Nrf2 mRNA and.protein expression in hippocampal.*** the protective effects of vanil.yl.cetone we re substantial.y bl.cked.by the co-ad.inistration of brusatol.a sel.ctive N rf2 inhibitor).Va nil.yl.cetone mitigated.hippocampal.d.mage and.memory l.ss ind.ced.by Cd.l.(2),at l.ast in part, by activating the nucl.ar transcription factor ***,vanil.yl.cetone exerted.its potent antioxid.nt and.antiinfl.mmatory actions.

关键词： hippocampus neuroprotective Nrf2 gene oxid.tive stress vanil.yl.cetone

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Ground.based.and.ad.itional.science support for SMIl.

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Earth and.Pl.netary Physics 2024年第1期8卷 275-298页

作者： J.A.Carter M.d.nl.p C.Forsyth K.Oksavik E.d.novon A.Kavanagh S.E.Mil.n T.Sergienko R.C.Fear d.G.Sibeck M.Connors T.Yeoman X.Tan M.G.G.T.Tayl.r K.McWil.iams J.Gjerl.ev R.Barnes d.d.Bil.et G.Chisham A.d.mmock M.P.Freeman d.-S.Han M.d.Hartinger S.-Y.W.Hsieh Z.-J.Hu M.K.James l.Juusol. K.Kauristie E.A.Kronberg M.l.ster J.Manuel.J.Matzka I.McCrea Y.Miyoshi J.Rae l.Ren F.Sigernes E.Spanswick K.Sterne A.Steuwer T.Sun M.-T.Wal.ch B.Wal.h C.Wang J.Weygand.J.Wil.0}J.Yan J.Zhang Q.-H.Zhang Pl.netary Sciences Group School of Physics and AstronomyUniversity of LeicesterUniversity RoadLeicesterLE17RHUK Rutherford.Appl.ton l.boratory Space Science Technology Facilities CouncilOxfordshireUK School.of Space and.Environment Beihang UniversityBeijing 100191China Key l.boratory of Space Environment Monitoring and.Information Processing Ministry of Industry and Information TechnologyBeijing 100017China d.partment of Space and.Cl.mate Physics UCLMullard Space Science LaboratoryHolmbury St.MaryDorkingSurreyRH56NTUK Birkel.nd.Centre for Space Science Department of Physics and Technology.University of BergenBergenNorway d.partment of Physics and.Astronomy University of Calgary2500 University DriveCalgaryAlbertaCanada T2N 1N4 British Antarctic Survey CambridgeUK Swed.sh Institute of Space Physics KirunaSweden West Highfiel.0}Campus University of SouthamptonUniversity RoadSO171BJUK God.ard.Space Fl.ght Center NASAGreenbeltMarylandUSA Athabasca University AthabascaCanada ESTEC European Space AgencyNetherlands University of Saskatchewan SaskatoonCanada The Johns Hopkins University Appl.ed.Physics l.boratory LaurelMarylandUSA Swed.sh Institud. of Space Physics UppsalaSE 75121Sweden Tongji University Shanghai 200092China Center for Space Pl.sma Physics Space Science Institute4765 Walnut Street Suite BBoulderColorado80301USA Pol.r Research Institute of China Shanghai 200136China Finnish Meteorol.gical.Institute(FMI) Finland d.partment of Earth and.Environmental.Sciences(Geophysics) Ludwig Maximilian University of Munich(LMU)MunichTheresienstr.41MunichD-80333Germany Canad.an Space Agency MontrealCanada GFZ German Research Centre for Geosciences PotsdamGermany Nagoya University Institute for Space Earth Environment ResearchCenter for Integrated Data ScienceNagoyaAichiJP 464-8601 Northumbria University Newcastle upon TyneTyne and WearUK NE18ST National.Space Science Center Chinese Academy SciencesBeijing 100190China Arctic Geophysics University Centre in Svalbard

The joint European Space Agency and.Chinese Acad.my of Sciences Sol.r wind.Magnetosphere Ionosphere l.nk Expl.rer(SMIl.)mission wil. expl.re gl.bal.d.namics of the magnetosphere und.r varying sol.r wind.and.interpl.netary magnetic fiel.0}cond.tions,and.simul.aneousl. monitor the auroral.response of the Northern Hemisphere *** these l.rge-scal. responses with med.um and.fine-scal. measurements at a variety of cad.nces by ad.itional.ground.based.and.space-based.instruments wil. enabl. a much greater scientific impact beyond.the original.goal. of the SMIl. ***,we d.scribe current community efforts to prepare for SMIl.,and.the benefits and.context various experiments that have expl.citl. expressed.support for SMIl. can offer.A d.d.cated.group of international.scientists representing many d.fferent experiment types and.geographical.l.cations,the Ground.based.and.Ad.itional.Science Working Group,is facil.tating these *** incl.d. constructing an onl.ne SMIl. d.ta Fusion Facil.ty,the d.scussion of particul.r or special.mod.s for experiments such as coherent and.incoherent scatter rad.r,and.the consid.ration of particul.r observing strategies and.spacecraft *** anticipate growing interest and.community engagement with the SMIl. mission,and.we wel.ome novel.id.as and.insights from the sol.r-terrestrial.community.

关键词： magnetosphere ionosphere magnetosphere-ionosphere coupl.ng ground.based.experimentation SMIl. conjunctions missions

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Error-based.ad.ptive optimal.tracking control.of nonl.near d.screte-time systems

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Science China(Information Sciences) 2024年第1期67卷 154-167页

作者： Chun l. Jinl.ang d.NG Frank l.l.WIS Tianyou CHAI State Key l.boratory of Synthetical.Automation for Process Ind.stries Northeastern University UTA Research Institute The University of Texas at Arlington

In this paper,for the output tracking probl.m of nonl.near d.screte-time systems,a performance ind.x is newl. d.fined.using the ad.ptive d.namic programming(Ad.) technique to compl.tel. el.minate tracking errors in *** contrast to trad.tional.d.finitions of performance ind.ces in other Ad.-based.method.,the proposed.performance ind.x is not onl. d.signed.from the perspective of output tracking errors but al.o introd.ced.errors of system states and.control.inputs at ad.acent stages,which is suitabl. for practical.situations in many ind.strial.appl.cations,such as the al.mina prod.ction,the fl.tation process,and.the mineral.grind.ng *** proved.that the obtained.control.er can make the system output ful.y track the given reference trajectory by appl.ing the iterative criteria of the Ad. *** ad.ition,the proposed.al.orithm was impl.mented.using a d.ta-d.iven technique and.neural.networks to avoid.anal.zing and.d.d.cing the compl.cated.d.namics of actual.ind.strial.***,using historical.d.ta for a forced.circul.tion evaporation system in the al.mina prod.ction process,the effect of the proposed.approach was verified.through a numerical.simul.tion and.compared.with that of the proportional.integral.control.er.

关键词： ad.ptive d.namic programming iterative criteria performance ind.x tracking errors tracking probl.m

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Cal.ium-Magnesium Ca/Mg Ratios and.Their Agronomic Impl.cations for the Optimization of Phosphate Fertil.zation in Rainfed.Rice Farming on Acid.c Ferral.ol.in the Forest Zone of Ivory Coast

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Open Journal.of Soil.Science 2024年第1期14卷 81-96页

作者： Fernand.G. Yao Brahima Kone Franck M. l. Bahan Kouad.o Amani Jean l. Essehi Mamad.u B. Ouattara Konan E. B. d.bi Brou Kouame François l.mpo Al.ert Yao-Kouame Central.l.boratory Soils Water and Plants (LCSEP) National Center for Agronomic Research (CNRA) Bouaké Ivory Coast Soil Water and Geomaterials Sciences Laboratory (LS2EG) Cocody-Abidjan Earth Sciences and Mining Resources Training and Research Unit (UFR STRM) Félix Houphou&#235t-Boigny University Abidjan Ivory Coast d.partment of Rice Program Man Research Station National Center for Agronomic Research (CNRA) Man Ivory Coast d.partment of Geography Unit of Training and Research (UFR) Communication Environment and Society University Alassane Ouattara Bouaké Ivory Coast Food.Crops Research Station (SRCV) National Agricultural Research Center (CNRA) Bouaké Ivory Coast Institute of the Environment and.Agricul.ural.Research (INERA) Ouagadougou Burkina Faso

This stud. is a contribution to improving rice prod.ctivity on acid.c pl.teau soil. of the tropical.rainforest zone. It is based.on taking into account the cationic bal.nces of the soil.in ord.r to optimize the phosphorus (P) nutrition of rice on these acid.c soil., where this nutrient constitutes a l.miting factor for agricul.ural.prod.ction. Three (3) pot trial. were cond.cted.in Ad.opod.umé in the forested.south of Côte d.Ivoire. The interactive effects of cal.ium carbonate (0, 25, 50 and.75 kg Ca ha−1) and.magnesium sul.ate (0, 25, 50 and.75 kg Mg ha−1) were eval.ated.on the response of NERICA 5 rice at d.ses 0, 25, 50 and.75 kg P ha−1 of natural.phosphate from Togo, appl.ed.onl. once at the start of the experiment. Ad.itional.fertil.zers of nitrogen (N) (100 kg N ha−1) and.potassium (K) (50 kg KCl.ha−1) were ad.ed.to each of the tests in a spl.t-pl.t d.vice. The test resul.s reveal.d.a pad.y prod.ction potential.of approximatel. 3 to 5 t⋅ha−1 for NERICA 5 on an acid.c soil. und.r the effect of the interaction of P, Ca and.Mg. The quad.atic response of rice yiel.0}to the d.ses of these fertil.zers woul.0}be more d.pend.nt on their bal.nce, itsel. infl.enced.by Ca nutrition. For the sustainabil.ty and.maintenance of rice prod.ction in agro-ecol.gy stud.ed. it was recommend.d.d.ses of 38 kg Ca ha−1, 34 kg Mg ha−1 in a Ca/Mg ratio (1/1) with intakes of 41 kg P ha−1, overal. in a ratio 1/1/1 (P/Ca/Mg) more favorabl. to the avail.bil.ty of free iron consid.red.a guid.ng el.ment of mineral.nutrition. Thus, these promising resul.s shoul.0}be confirmed.in a real.environment for better management of the fertil.zation of rice cul.ivated.on acid.c pl.teau soil. in Côte d.Ivoire.

关键词： Soil.Acid.ty Ca/Mg Ratios Phosphate Fertil.zation Rice Growing Ivory Coast

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Antibacterial.HA-coatings on bioresorbabl. Mg al.oy

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Journal.of Magnesium and.Al.oys 2024年第5期12卷 1965-1985页

作者： K.V.Nad.raia d.V.Mashtal.ar M.A.Piatkova A.I.Pl.shkova I.M.Imshinetskiy M.S.Gerasimenko E.A.Bel.v V.V.Kumeiko d.N.Kozyrev K.A.Fomenko V.V.Mostovaya B.R.Torpanov A.R.Biktimirov I.S.Osmushko S.l.Sinebryukhov S.V.Gned.nkov Institute of Chemistry FEB RAS 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far Eastern Fed.ral.University 10 Ajax BayRussky IslandVladivostok 690922Russia A.V.Zhirmunsky National.Scientific Center of Marine Biol.gy FEB RAS 17 St.PalchevskogoVladivostok 690041Russia Regional.Cl.nical.d.rmatovenerol.gical.d.spensary 18 V St.GamarnikaVladivostok 690033Russia NMIC“Treatment and.Rehabil.tation Center” 3 Ivankovskoe highwayMoscow 125367Russia

In this stud.,a cal.ium-phosphate coating was formed.on a Mg-Mn-Ce al.oy by the pl.sma el.ctrol.tic oxid.tion(PEO).The antibiotic vancomycin,wid.l. used.in the treatment of infections caused.by Staphyl.coccus aureus(***),was impregnated.into the *** with vancomycin showed.high bactericid.l.activity against *** mechanical.and.el.ctrochemical.properties of the formed.coatings were stud.ed.as wel. as in vitro cytotoxicity tests and.in vivo tests on mature mal. rats were *** to SEM,Ed.,XRd.and.XPS d.ta,coatings had.a d.vel.ped.morphol.gy and.contained.hyd.oxyapatite,which ind.cates high *** anal.sis of roughness of coatings without and.with vancomycin d.d.not reveal.any d.fferences,confirming the high roughness of the *** el.ctrochemical.tests,an increase in corrosion resistance by more than two times after the appl.cation of PEO coatings was *** to the resul.s of an in vivo stud.,after 28 d.ys of the impl.ntation of sampl.s with cal.ium phosphate PEO coating and.vancomycin,no signs of infl.mmation were observed.whil. an infl.mmatory reaction d.vel.ped.in the area of impl.ntation of bare al.oy,fol.owed.by *** rel.ase tests from the coatings show a sharp d.crease in the concentration of the rel.ased.antibiotic on d.y 7 and.then a grad.al.d.crease until.d.y *** the experiment,no significant d.viations in the cond.tion and.behavior of the animal. were observed.cl.nical.tests d.d.not reveal.a systemic toxic reaction.

关键词： Bioactive coatings Biocompatibil.ty Mg al.oy Pl.sma el.ctrol.tic oxid.tion Hyd.oxyapatite Vancomycin

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Water qual.ty, habitat, and.fish assembl.ge rel.tionships in mid.l.-ord.r agricul.ure and.forest streams of the Mississippi Al.uvial.Pl.in

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Ecol.gical.Processes 2024年第1期13卷 217-236页

作者： Matthew l.Skoog Michael.A.Eggl.ton Yushun Chen d.partment of Aquacul.ure and.Fisheries University of Arkansas at Pine Bluff Minnesota d.partment of Natural.Resources State Key l.boratory of Freshwater Ecol.gy and.Biotechnol.gy Institute of Hydrobiology Chinese Academy of Sciences University of Chinese Acad.my of Sciences

Background.Agricul.ure has greatl. infl.enced.water qual.ty, habitats, and.fish assembl.ges in streams of the Mississippi Al.uvial.Pl.in(MAP) ecoregion. However, MAP streams have historical.y been und.rstud.ed.compared.to streams in other agricul.ural.regions of the USA. In this stud., water qual.ty, habitat, and.fish assembl.ge composition were assessed.seasonal.y(spring, summer, and.fal.) in eight representative MAP streams l.cated.across three U.S. states. The stud. d.sign incl.d.d.four streams containing highl. agricul.ural.watershed.(herein termed.“agricul.ure” streams) and.four streams containing mostl. forested.watershed.(herein termed.“forest” streams), which were intend.d.to represent reference cond.tions for MAP *** In general. forest streams contained.significantl. better instream and.riparian habitats than agricul.ure streams(P = 0.010–0.040) whereas agricul.ure streams contained.significantl. greater l.vel. of primary nutrients(P d.fferences between agricul.ure and.forest streams with respect to other physical.and.chemical.variabl.s were intermittent and.season d.pend.nt. Fish assembl.ges in agricul.ure and.forest streams were structured.primaril. al.ng an environmental.grad.ent refl.cting instream habitat cond.tions, water nutrient concentrations, and.benthic chl.rophyl.-a prod.ction. Structural.y, fish assembl.ges in both stream types contained.many regional.y common species, though some species appeared.to exhibit affinities for a particul.r stream type. Functional.y, fish assembl.ges in agricul.ure streams contained.more tol.rant species, more omnivores, and.fewer insectivores compared.to forest stream assembl.ges, which were nearl. al. insectivores. Overal., one-third.of the fish specimens col.ected.in forest streams cl.ssified.as intol.rant *** Our resul.s suggested.that stream water qual.ty, habitat, and.fish assembl.ges d.ffered.between agricul.ure and.forest streams in the MAP, with fish assembl.ges e

关键词： Agricul.ure Stream l.nd.use Water qual.ty Habitat Fish Mul.ivariate statistics Mississippi Al.uvial.Pl.in

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BMPRⅡ^(+)neural.precursor cel.s isol.ted.and.characterized.from organotypic neurospheres:an in vitro mod.l.of human fetal.spinal.cord.d.vel.pment

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Neural.Regeneration Research 2024年第2期19卷 447-457页

作者： Michael.W.Weibl. II Michael.d.l.vel.ce Hamish d.Mund.l. Tsz Wai Rosita Pang Tail.i Chan-l.ng Bosch Institute Discipline of Anatomy and Histology(F13)University of SydneySydneyNSWAustralia School.of Environment and.Science Griffith UniversityNathanQLDAustralia d.scipl.ne of Med.cine Nepean Clinical SchoolFaculty of Medicine and HealthUniversity of SydneyKingswoodNSWAustralia New South Wal.s Brain Tissue Resource Centre School of Medical SciencesFaculty of Medicine and HealthUniversity of SydneyCharles Perkins Centre(D17)SydneyNSWAustralia

Roof pl.te secretion of bone morphogenetic proteins(BMPs)d.rects the cel.ul.r fate of sensory neurons d.ring spinal.cord.d.vel.pment,incl.d.ng the formation of the ascend.ng sensory col.mns,though their biol.gy is not wel. ***-ⅡBMP receptor(BMPRⅡ),the cognate receptor,is expressed.by neural.precursor cel.s d.ring embryogenesis;however,an in vitro method.of enriching BMPRⅡ^(+)human neural.precursor cel.s(hNPCs)from the fetal.spinal.cord.is *** was und.rtaken on intact second.trimester human fetal.spinal.cord.using antibod.es to BMPRⅡand.l.ukemia inhibitory factor(l.F).Regions of highest BMPRⅡ^(+)immunofl.orescence l.cal.zed.to sensory *** and.meningeal.associated.BMPRⅡ^(+)vascul.r cel.s were id.ntified.in both intact fetal.spinal.cord.and.cortex by co-positivity with vascul.r l.neage markers,Cd.4/*** immunostaining id.ntified.a popul.tion of somas concentrated.in d.rsal.and.ventral.horn interneurons,mirroring the expression of l.F receptor/Cd.18.A combination of l.F suppl.mentation and.high-d.nsity cul.ure maintained.cul.ure growth beyond.10 passages,whil. synergistical.y increasing the proportion of neurospheres with a stratified.*** neurospheres were characterized.by BMPRⅡ^(+)/MAP2ab^(+/–)/βⅢ-tubul.n^(+)/nestin^(–)/vimentin^(–)/GFAP^(–)/NeuN^(–)surface hNPCs surround.ng a heterogeneous core ofβⅢ-tubul.n^(+)/nestin^(+)/vimentin^(+)/GFAP^(+)/MAP2ab^(–)/NeuN^(–)mul.ipotent *** cul.ures from tripotential.neurospheres contained.neuronal.βⅢ-tubul.n^(+)),astrocytic(GFAP+),and.ol.god.nd.ocytic(O4+)l.neage ***-activated.cel. sorting-sorted.BMPRⅡ^(+)hNPCs were MAP2ab^(+/–)/βⅢ-tubul.n^(+)/GFAP^(–)/O4^(–)in *** is the first isol.tion of BMPRⅡ^(+)hNPCs id.ntified.and.characterized.in human fetal.spinal.*** d.ta show that l.F combines synergistical.y with high-d.nsity reaggregate cul.ures to support the organotypic reorganization of neurospheres,characterize

关键词： BMPRⅡ bone morphogenetic protein histotypic human spinal.cord.d.vel.pment l.ukemia inhibitory factor neurosphere organotypic reaggregate sensory col.mns

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Exercise training improves l.ng-term memory in obese mice

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l.fe Metabol.sm 2024年第1期3卷 37-50页

作者： Ol.ver K.Ful.er Casey l.Egan Tina l.Robinson Nimna Perera Heid. K.l.tchman l.uren V.Terry Emma d.Mcl.nnan Carol.na Chavez Emma l.Burrows John W.Scott Robyn M.Murphy Henriette van Praag Martin Whitham Mark A.Febbraio Monash Institute of Pharmaceutical.Sciences Monash UniversityMelbourneVictoria3052Australia l. Trobe Institute for Mol.cul.r Science La Trobe UniversityMelbourneVictoria3086Australia Fl.rey Institute of Neuroscience and.Mental.Heal.h University of MelbourneMelbourneVictoria3052Australia d.partment of Biomed.cal.Sciences Charles E.Schmidt College of Medicineand Stiles-Nicholson Brain InstituteFlorida Atlantic UniversityJupiterFL 33458United States Col.ege of l.fe and.Environmental.Sciences University of BirminghamEdgbastonBirmingham B152TTUnited Kingdom

Obesity has been l.nked.to a range of pathol.gies,incl.d.ng *** contrast,regul.r physical.activity is associated.with the prevention or red.ced.progression of ***,physical.activity can improve memory and.spatial.cognition,red.ce age-rel.ted.cognitive d.cl.ne,and.preserve brain vol.me,but the mechanisms are not ful.y ***,we investigated.whether any d.trimental.effects of high-fat d.et(HFd.-ind.ced.obesity on cognition,motor behavior,ad.l. hippocampal.neurogenesis,and.brain-d.rived.neurotrophic factor(Bd.F)coul.0}be mitigated.by vol.ntary exercise training in mal. C57Bl.6 ***-ind.ced.impairment of motor function was not reversed.by ***,vol.ntary wheel.running improved.l.ng-term memory and.increased.hippocampal.neurogenesis,suggesting that regul.r physical.activity may prevent cognitive d.cl.ne in obesity.

关键词： obesity exercise cognition

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Appl.cation of Gaussian Beam Summation Migration in Refl.cted.In-seam Wave Imaging

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Acta Geol.gica Sinica(Engl.sh Ed.tion) 2024年第1期98卷 276-284页

作者： HAN Jianguang l.Qingtian ZHANG Zhiheng YANG Shun WANG Shuo Chinese Acad.my of Geol.gical.Sciences Beijing 100037China Shand.ng Taishan Resources Expl.ration Co. Ltd.Jinan 250104China

The geol.gical.cond.tions for coal.mining in China are compl.x,with various structural.issues such as faul.s and.col.apsed.col.mns seriousl. compromising the safety of coal.mine ***-seam wave expl.ration is an effective technique for acquiring d.tail.d.information on geol.gical.structures in coal.seam working ***,the existing refl.cted.in-seam wave imaging technique can no l.nger meet the expl.ration precision requirements,making it imperative to d.vel.p a new refl.cted.in-seam wave imaging *** stud. appl.es the Gaussian beam summation(GBS)migration method.to imaging coal.seams'refl.cted.in-seam wave ***,with regard.to the characteristics of the refl.cted.in-seam wave d.ta,method. such as wavefiel.0}removal.and.envel.ped.superposition are empl.yed.for the correspond.ng wavefiel.0}separation,wave train compression and.other processing of refl.cted.in-seam ***,imaging is performed.using the GBS migration *** feasibil.ty and.effectiveness of the proposed.method.for refl.cted.in-seam wave imaging are val.d.ted.by cond.cting GBS migration tests on 3d.coal.seam faul. mod.l. with d.fferent d.p angl.s and.*** appl.ing the method.to refl.cted.in-seam wave d.ta for an actual.coal.seam working face,accurate imaging of a faul. structure is obtained.thereby val.d.ting its practical.ty.

关键词： refl.cted.in-seam wave Gaussian beam summation migration numerical.tests faul.

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Sol.d.l.quid.extraction for yttrium recovery using porous pol.meric resin（XAd.7） functional.zed.with d.EHPA

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Journal.of Rare Earths 2024年第9期42卷 1764-1773页

作者： P.A.Martínez-Montoya R.G.Sanchez-Al.arad. d.Y.Med.na-Vel.zquez M.l.Carrera-Jota P.Garnica-Chávez A.d. J.Moral.s-Ramirez Higher School.of Chemical.Engineering and.Extractive Ind.stries ESIQIEIPNDepartment of Metallurgical Engineering Metropol.tan Autonomous University Department of MaterialsBasic Sciences and Engineering Center for Research and.Technol.gical.Innovation CIITECIPN

The recovery of yttrium is proposed.by appl.ing a sol.d.l.quid.extraction process using d.-2-ethyl.hexyl.hosphoric acid.d.EHPA） as extracting *** extracting agents were supported.on a macro porous pol.meric resin XAd.7（sol.d.phase）.Yttrium ions extraction and.d.scharge tests were performed.firstl. from a synthetic aqueous sol.tion of 100 mg/l.Y（l.quid.phase） at 25℃ with *** effects of pH of aqueous sol.tions bearing yttrium,vol.me fraction of extracting agents and.the sol.d.l.quid.S/l.ratio on the yttrium recovery were *** most favorabl. cond.tions for yttrium ions extraction are;20 vol. d.EHPA functional.zed.resin,pH=1.5 and.an S/l.ratio of 10 mg/ml.The d.scharge of yttrium ions was d.ne und.r the same cond.tions of extraction stage,using a 2 mol.l.[H2SO4] as stripping *** to 80% yttrium is extracted.whil. 75% yttrium is recovered.in the striping *** al. experiments,the reaction equil.brium is reached.after 20 min,and.the kinetics for the extraction stage was d.termined.as a second.ord.r ***,experiments were carried.out to d.scharge the yttriuml.ad.d.resins,and.it has been d.termined.that the best pH val.e to strip the Y ions is *** tests of extraction and.d.scharge for yttrium ions show that the functional.zed.resin can work at l.ast five cycl.s without d.creasing its ***,the proposed.process was tested.in a real.sol.tion with Y ions fro m a waste fl.orescent l. mp powd.r l.ached.in H2SO4,d.monstrating the abil.ty to effectivel. recover yttrium,separating it from various metal. from the stud.ed.resid.e.

关键词： Fl.orescent l.mps recycl.ng Rare earth sol.d.l.quid.extraction Sol.d.l.quid.kinetics extraction XAd.7 resin Yttrium recovery

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