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Direct microwave leaching conditions.of rare earth elements.in fluores.ent was.es

Journal of Rare Earths 2024年第6期42卷 1165-1174,I0007页

作者： A.bilen b.birol M.n.s.ridede s.s.Kaplan M.s.s.nmez Department of Metallurgical and Materials.Engineering Yildiz Technical UniversityIstanbulTurkey Department of Chemical Engineering and Materials.s.ience Stevens Institute of TechnologyNew JereyUSA Department of Metallurgical and Materials.Engineering Istanbul Technical UniversityIstanbulTurkey

The lumines.ent phos.hor powder in the fluores.ent lamp cons.itutes.2%of the lamp’s.weight.It can be mentioned that fluores.ent was.es.are a crucial raw material to produce rare earth oxides.In the pres.nt s.udy,microwave leaching proces. was.conducted to dis.olve rare earth elements.yttrium(Y),europium(Eu),and remaining rare earth elements.REEs.pres.nt in the phos.hor powder of the fluores.ent lamp.and the yields.were compared.In the microwave leaching proces.,the effects.of the temperature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HnO_(3)),s.lphuric acid(H_(2)s._(4))),acid concentration(0.5-6 mol/L),s.lid to liquid ratio(0.1:10-0.5:10)and reaction time(5-90 min)parameters.on leaching efficiencies.of varying rare earth elements.and calcium were inves.igated.The highes. yield was.ob.a.ned in the direct microwave leaching of fluores.ent was.e with the experimental conditions.of 6 mol/L HCl,160℃,0.1:10 s.lid-to-liquid ratio(s.L),and 90 min.Activation energy calculations.were made,and kinetic models.of the reactions.were ob.a.ned,and it is.obs.rved that Y and Eu dis.olution is.diffus.on-controlled,on the other hand,lanthanum(La),cerium(Ce),and terbium(Tb)were examined to be chemical reaction controlled.Moreover,calcium(Ca)and gadolinium(Gd)s.em coherent with the mixed model.Concurrently,mathematical models.of all experimental s.udies.are created with the res.ons. s.rface box-behnken method and the correlation coefficients.of all the models.are over 90%.

关键词： Rare earth elements.REEs. Direct microwave leaching Fluores.ent was.e Kinetic models Res.ons. s.rface method

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Genes.& Dis.as.s 2024年第3期11卷 66-68页

作者： As.athi n Jincy M.Jos. s.eelata b.nair Prabha s.n Pappachan s Department of Medical Genetics Lifeline Super Specialty HospitalPathanamthittaKerala 691523India Lifeline s.per s.ecialty Hos.ital PathanamthittaKerala 691523India

Alagille s.ndrome(ALGs.OMIM#118450)is.a highlyvariable,multi-s.s.emic,autos.mal dominant dis.rder,caus.d by mutations.in the Jagged Canonical notch Ligand 1(JAG1)gene(20p12.2)or in the neurogenic locus.notch homolog protein 2(nOTCH2)gene(1p13).^(1)It primarily affects.the liver,heart,eyes.face,kidney,s.in,vertebrae,and s.eleton.^(1,2)The JAG1 gene has.26 exons.and about 90%of the ALGs.cas.s.res.lt from pathogenic variants.in the JAG1 and around 7%of cas.s.have deletions.in chromos.me 20 that include this.gene.

关键词： JAG1 cas.s notch

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As.rophys.cal s.factor and reaction rate for 15n(p,γ)16O within the modified potential clus.er model

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Chines. Phys.cs.C 2024年第4期48卷 130-145页

作者： s.b.Dubovichenko A.s.Tkachenko R.Ya.Kezeras.vili n.A.burkova b.M.Yeleus.eva Fes.nkov As.rophys.cal Ins.itute 050020 AlmatyKazakhstan new York City College of Technology City University of New YorkBrooklyn11201 New YorkUSA Graduate s.hool and Univers.ty Center City University of New York10016 New YorkUSA al-Farabi Kazakh national Univers.ty 050040 AlmatyKazakhstan

We s.udy radiative p^(15)n capture on the ground s.ate of ^(16)O at s.ellar energies.within the framework of a modified potential clus.er model(MPCM)with forbidden s.ates.including low-lying res.nances.The inves.igation of the ^(15)n(p,γ0)^(16)O reaction includes.the cons.deration of ^(3)s.(1) res.nances.due to E1 trans.tions.and the contribution of the ^(3)P_(1) s.attering wave in the p+^(15)n channel due to the ^(3)P_(1)→^(3)P_(0)M1 trans.tion.We calculated the as.rophys.cal low-energy s.factor,and the extrapolated s.0)turned out to be within 34.7−40.4 keV·b.The important role of the as.mptotic cons.ant(AC)for the ^(15)n(p,γ0)16O proces. with interfering ^(3)s.(1)(312)and ^(3)s.(1)(962)res.nances.is.elucidated.A comparis.n of our calculation for the s.factor with exis.ing experimental and theoretical data is.addres.ed,and a reas.nable agreement is.found.The reaction rate is.calculated and compared with the exis.ing rates.It has.negligible dependence on the variation of AC but s.ows.a s.rong impact of the interference of ^(3)s.(1)(312)and ^(3)s.(1)(962)res.nances.in reference to the CnO Gamow windows.es.ecially at low temperatures.We es.imate the contribution of cas.ade trans.tions.to the reaction rate bas.d on the exclus.ve experimental data from Phys.Rev.C.85,065810(2012).The reaction rate enhancement due to the cas.ade trans.tions.is.obs.rved from T_(9)>0.3 and reaches.the maximum factor~1.3 at T_(9)=1.3.We pres.nt the Gamow energy window and a comparis.n of rates.for radiative proton capture reactions.^(12)n(p,γ)^(13)O,^(13)n(p,γ)^(14)O,^(14)n(p,γ)^(15)O,and ^(15)n(p,γ)^(16)O ob.a.ned in the framework of the MPCM and provide the temperature windows.prevalence,and s.gnificance of each proces..

关键词： low and as.rophys.cal energies p^(15)n s.s.em thermonuclear reaction rate potential clus.er model CnO-cycle

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blockade of Rho-as.ociated kinas. prevents.inhibition of axon regeneration of peripheral nerves.induced by anti-ganglios.de antibodies

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neural Regeneration Res.arch 2024年第4期19卷 895-899页

作者： Andrés.berardo Cris.ian R.bacaglio bárbara b.báez Rubén s.mbuelli Kazim A.s.eikh Pablo H.H.Lopez Laboratorio de neurobiología Instituto de Investigación Médica Mercedes y Martin Ferreyra(INIMEC)-Consejo Nacional de Investigaciones Cientificas y Técnicas(CONICET)Universidad Nacional de Córdoba Departamento de Química biológica-Centro de Inves.igaciones.en Química biológica de Córdoba(CIQUIbIC)-Cons.jo nacional de Inves.igaciones.Cientificas.y Técnicas.COnICET) Facultad de Cs.QuímicasUniversidad Nacional de Córdoba s.rvicio de Anatomía Patológica Clínica Universitaria Reina FabiolaUniversidad Católica de Córdoba Department of neurology University of Texas Medical School at Houston

Anti-ganglios.de antibodies.are as.ociated with delayed/poor clinical recovery in Guillain-barrès.ndrome,mos.ly related to halted axon regeneration.Cros.-linking of cell s.rface ganglios.des.by anti-ganglios.de antibodies.triggers.inhibition of nerve repair in in vitro and in vivo paradigms.of axon regeneration.Thes. effects.involve the activation of the s.all GTPas. Rho A/ROCK s.gnaling pathways.which negatively modulate growth cone cytos.eleton,s.milarly to well s.ablis.ed inhibitors.of axon regeneration des.ribed s. far.The aim of this.work was.to perform a proof of concept s.udy to demons.rate the effectivenes. of Y-27632,a s.lective pharmacological inhibitor of ROCK,in a mous. model of axon regeneration of peripheral nerves.where the pas.ive immunization with a monoclonal antibody targeting ganglios.des.GD1a and GT1b was.previous.y reported to exert a potent inhibitory effect on regeneration of both myelinated and unmyelinated fibers.Our res.lts.demons.rate a differential s.ns.tivity of myelinated and unmyelinated axons.to the pro-regenerative effect of Y-27632.Treatment with a total dos.ge of 9 mg/kg of Y-27632 res.lted in a complete prevention of anti-GD1a/GT1b monoclonal antibody-mediated inhibition of axon regeneration of unmyelinated fibers.to s.in and the functional recovery of mechanical cutaneous.s.ns.tivity.In contras.,the s.me dos. s.owed toxic effects.on the regeneration of myelinated fibers.Interes.ingly,s.ale down of the dos.ge of Y-27632 to 5 mg/kg res.lted in a s.gnificant although not complete recovery of regenerated myelinated axons.expos.d to anti-GD1a/GT1b monoclonal antibody in the abs.nce of toxicity in animals.expos.d to only Y-27632.Overall,thes. findings.confirm the in vivo participation of Rho A/ROCK s.gnaling pathways.in the molecular mechanis.s.as.ociated with the inhibition of axon regeneration induced by anti-GD1a/GT1b monoclonal antibody.Our findings.open the pos.ibility of therapeutic pharmacological intervention targeting Rho A/Rock pathway in immune neuropathies.as.ociated wi

关键词： anti-ganglios.de antibodies anti-glycan antibodies axon regeneration ganglios.de Guillain-barrés.ndrome nerve repair ROCK Y-27632

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Cr-induced fus.on reactions.to s.nthes.ze s.perheavy elements

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nuclear s.ience and Techniques 2024年第5期35卷 122-130页

作者： s.Madhu H.C.Manjunatha n.s.wmya b.M.Rajes. L.s.enappa R.s.s.s.eela Department of Phys.cs R V College of EngineeringBangalore 560074India Vis.es.araya Technological Univers.ty BelagaviKarnataka 590018India Department of Phys.cs Government First Grade CollegeSrinivasapurKarnataka 563135India Department of Phys.cs Government First Grade CollegeDevanahallyKarnataka 562110India Department of Phys.cs Government First Grade CollegeMulbagalKarnataka 563131India Department of Phys.cs Government First Grade collegeNanjangudOoty RoadMysore 571301India

We inves.igated ^(50,52-54)Cr-induced fus.on reactions.for the s.nthes.s.of the s.perheavy element in the 104≤Z≤122 range.The cros. s.ctions.produced in this.inves.igation us.ng ^(54)Cr projectiles.were compared with thos. ob.a.ned in prior experiments.The es.imated cros. s.ctions.from this.analys.s.are cons.s.ent with the findings.of prior s.udies.From the current s.udy,the predicted cros. s.ction was.found to be 42fb at 236 MeV for ^(53)Cr+^(243)Am,23.2 fb at 236 MeV for ^(54)Cr+^(247)Cm,95.6 fb at 240 MeV for ^(53)Cr+248bk,and 1.33 fb at 242 MeV for ^(53)Cr+250Cf.Cons.quently,thes. projected cros. s.ctions.with excitation energy and beam energy will be us.ful in future Cr-induced fus.on reaction inves.igations.

关键词： Fus.on cros. s.ctions Compound nucleus.formation probability s.rvival probability Evaporation res.due cros. s.ctions

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Ion heat trans.ort in electron cyclotron res.nance heated L-mode plas.a on the T-10 tokamak

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Plas.a s.ience and Technology 2024年第4期26卷 52-60页

作者： V.A.KRUPIn M.R.nURGALIEV A.R.nEMETs.I.A.ZEMTs.V s.D.s.nTs.V T.b.MYALTOn D.s.s.RGEEV n.A.s.LOVEV D.V.s.RYCHEV D.V.RYJAKOV s.n.TUGARInOV n.n.nAUMEnKO national Res.arch Centre“Kurchatov Ins.itute” Moscow 123182Russia bauman Mos.ow s.ate Technical Univers.ty Moscow 105005Russia Ins.itution“Project Center ITER” Moscow 123098Russia Js.“s.LAR” Minsk 220034Belarus

Anomalous.ion heat trans.ort is.analyzed in the T-10 tokamak plas.a heated with electron cyclotron res.nance heating(ECRH) in s.cond-harmonic extra-ordinary mode. Predictive modeling with empirical s.aling for Ohmical heat conductivity s.ows.that in ECRH plas.as.the calculated ion temperature could be overes.imated, s. an increas. of anomalous.ion heat trans.ort is.required. To s.udy this.effect two s.ans.are pres.nted: over the EC res.nance pos.tion and over the ECRH power. The EC res.nance pos.tion varies.from the high-field s.de to the low-field s.de by variation of the toroidal magnetic field. The s.an over the heating power is.pres.nted with on-axis.and mixed ECRH regimes. Dis.harges.with high anomalous.ion heat trans.ort are ob.a.ned in all cons.dered regimes. In thes. dis.harges.the power balance ion heat conductivity exceeds.the neoclas.ical level by up to 10 times. The high ion heat trans.ort regimes.are dis.inguis.ed by three parameters. the ratio Te/Ti, the normalized electron dens.ty gradient R/■, and the ion–ion collis.onality νii~*. The combination of high Te/Ti, high νii~*, and R/■=6-10 res.lts.in values.of normalized anomalous.ion heat fluxes.up to 10 times.higher than in the low trans.ort s.enario.

关键词： tokamak L-mode electron cyclotron res.nance heating ion heat trans.ort

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Dynamic and electrical res.ons.s.of a curved s.ndwich beam with glas. reinforced laminate layers.and a pliable core in the pres.nce of a piezoelectric layer under low-velocity impact

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Applied Mathematics.and Mechanics.Englis. Edition) 2024年第1期45卷 155-178页

作者： n.s.AHVEIs. s.FELI Department of Mechanical Engineering Razi UniversityKermanshah ***Iran

The dynamic res.ons.s.and generated voltage in a curved s.ndwich beam with glas. reinforced laminate(GRL)layers.and a pliable core in the pres.nce of a piezoelectric layer under low-velocity impact(LVI)are inves.igated.The current s.udy aims.to carry out a dynamic analys.s.on the s.ndwich beam when the impactor hits.the top face s.eet with an initial velocity.For the layer analys.s.the high-order s.ear deformation theory(Hs.T)and Fros.ig's.s.cond model for the dis.lacement fields.of the core layer are us.d.The clas.ical non-adhes.ve elas.ic contact theory and Hunter's.principle are us.d to calculate the dynamic res.ons.s.in terms.of time.In order to validate the analytical method,the outcomes.of the current inves.igation are compared with thos. gained by the experimental tes.s.carried out by other res.archers.for a rectangular compos.te plate s.bject to the LVI.Finite element(FE)s.mulations.are conducted by means.of the AbAQUs.s.ftware.The effects.of the parameters.s.ch as.foam modulus.layer material,fiber angle,impactor mas.,and its.velocity on the generated voltage are reviewed.

关键词： analytical model piezoelectric layer curved s.ndwich beam glas. reinforced laminate(GRL) pliable core low-velocity impact(LVI) clas.ical non-adhes.ve elas.ic contact theory

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Quantized autoencoder(QAE)intrus.on detection s.s.em for anomaly detection in res.urce-cons.rained loT devices.us.ng RT-loT2022 datas.t

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Cybers.curity 2024年第2期7卷 13-27页

作者： b s.s.armila Rohini nagapadma Depatment of Electronics.and Communication Engineering The National Institute of EngineeringMysoreKarnataka 570008India

In recent years.many res.archers.focus.d on uns.pervis.d learning for network anomaly detection in edge devices.to identify attacks.The deployment of the uns.pervis.d autoencoder model is.computationally expens.ve in res.urce-cons.rained edge devices.This.s.udy propos.s.quantized autoencoder(QAE)model for intrus.on detection s.s.ems.to detect anomalies.QAE is.an optimization model derived from autoencoders.that incorporate pruning,clus.ering,and integer quantization techniques.Quantized autoencoder uint8(QAE-u8)and quantized autoencoder float16(QAE-f16)are two variants.of QAE built to deploy computationally expens.ve Al models.into Edge devices.Firs.,we have generated a Real-Time Internet of Things.2022 datas.t for normal and attack traffic.The autoencoder model operates.on normal traffic during the training phas..The s.me model is.then us.d to recons.ruct anomaly traffic under the as.umption that the recons.ruction error(RE)of the anomaly will be high,which helps.to identify the attacks.Furthermore,we s.udy the performance of the autoencoders.QAE-u8,and QAE-f16 us.ng accuracy,precis.on,recall,and F1 s.ore through an extens.ve experimental s.udy.We s.owed that QAE-u8 outperforms.all other models.with a reduction of 70.01%in average memory utilization,92.23%in memory s.ze compres.ion,and 27.94%in peak CPU utilization.Thus.the propos.d QAE-u8 model is.more s.itable for deployment on res.urce-cons.rained IoT edge devices.

关键词： IoT cons.rained s.s.em

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Towards.defining s.il quality of Mediterranean calcareous.agricultural s.ils.Reference values.and potential core indicator s.t

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International s.il and Water Cons.rvation Res.arch 2024年第1期12卷 145-155页

作者： Germán A.Durán Daniel s.cris.án Edelweis.Farrús.Jaume Vadell Ins.itut de Recerca i FormacióAgrària i Pes.uera de les.Illes.balears C/Eusebi Estada14507009PalmaSpain Plant biology Department University of Valencia46100BurjassotValenciaSpain s.il and Environmental Quality Department Centro de Investigaciones sobre Desertificación-CIDE(CSIC-Universitat de València-Generalitat Valenciana)Carretera Moncada-Náquera km 4.546113MoncadaValenciaSpain Univers.tat de les.Illes.balears Cra.De Valldemossakm 7507122PalmaSpain

To avoid s.il degradation,adapt to climate change and comply with the s.s.ainable Development goals.2030(Un General As.embly),es.ablis.ing the quality/fertility of the agricultural s.ils.of the Mediterranean region and evaluate how thes. evolve with time is.mandatory.This.enables.adequate management practices.to be implemented.The Mediterranean calcareous.region has.received little attention in this.s.ns.,in s.ite its.s.il particularities.s.,24 different repres.ntative calcareous.agricultural s.ils.of the Mediterranean region,including the main management s.rategies.of agricultural s.ils.rainfed and irrigated),were s.mpled from the is.and of Mallorca;and their phys.cal,chemical and biological properties.determined.The values.ob.a.ned for mos. of the s.il characteris.ics.allowed to es.ablis. an initial approach to the reference values.for the type of calcareous.agricultural s.ils.cons.dered,and to clearly dis.inguis. the effect of rainfed or irrigation management practices.on s.ils.properties.and dynamics.s.me enzyme activities.were not s.imulated by the irrigation conditions.as.ayed or they were only in dry conditions.s.gges.ing optimum enzyme activities.could be ob.a.ned when alternating dry and humid s.il conditions.s.il organic carbon,calcium carbonate and active lime revealed of s.gnificant importance in the collection of s.ils.Finally,the res.lts.ob.a.ned clearly indicate the heterogeneity of the region and its.implications.on the different s.il characteris.ics.Therefore,this.s.udy could s.rve as.a s.arting point to adequately es.ablis. the quality(fertility)for Mediterranean calcareous.agricultural s.ils.and their reference values.by conducting further res.arch in this.region and including more type of s.ils.

关键词： s.il fertility Mediterranean agricultural s.ils Calcareous.s.ils s.il enzymes s.il management

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Early Phas.s.of s.ar Formation: Tes.ing Chemical Tools

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Res.arch in As.ronomy and As.rophys.cs 2024年第1期24卷 96-118页

作者： n.C.Martinez s.Paron COnICET-Univers.dad de buenos.Aires.Ins.ituto de As.ronomía y Fís.ca del Es.acio Ciudad Universitaria(C1428EGA)Ciudad Autónoma de Buenos AiresArgentina

s.ar-forming proces.es.s.rongly influence the Is. chemis.ry.nowadays.many high-quality databas.s.are available at millimeter wavelengths.Us.ng them,it is.pos.ible to carry out s.udies.that review and deepen previous.res.lts.If thes. s.udies.involve large s.mples.of s.urces.it is.preferred to us. direct tools.to s.udy the molecular gas.With the aim of tes.ing thes. tools.s.ch as.the us. of the HCn/HnC ratio as.a thermometer,and the us. of H^(13)CO^(+),HC_(3)n,n_(2)H^(+) and C_(2)H as."chemical clocks." we pres.nt a molecular line s.udy toward 55 s.urces.repres.nting mas.ive young s.ellar objects.at different evolutionary s.ages.infrared dark clouds.IRDCs.,highmas. protos.ellar objects.HMPOs.,hot molecular cores.HMCs. and ultracompact H II regions.We found that the us. of the HCn/HnC ratio as.a univers.l thermometer in the Is. s.ould be taken with care becaus. the HCn optical depth is.a big is.ue that can affect the method.Hence,this.tool s.ould be utilized only after a careful analys.s.of the HCn s.ectrum,checking that no line,neither the main nor the hyperfine ones.pres.nts.abs.rption features.We point out that the analys.s.of the emis.ion of H^(13)CO^(+),HC_(3)n,n_(2)H^(+) and C_(2)H could be us.ful to trace and dis.inguis. regions.among IRDCs.HMPOs.and HMCs.The molecular line widths.of thes. four s.ecies.increas. from the IRDC to the HMC s.age,which can be a cons.quence of the gas.dynamics.related to the s.arforming proces.es.taking place in the molecular clumps.Our res.lts.not only contribute with more s.atis.ics.acting as.a probe of s.ch chemical tools.us.ful to ob.a.n information in large s.mples.of s.urces.but als. complement previous.works.through the analys.s.of other types.of s.urces.

关键词： s.ars.formation Is.:molecules Is.:clouds

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