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Direct m.crowave leaching conditions of rare earth elem.nts in fluorescent wastes

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

作者： A.Bilen B.Birol m.n.saridede s.s.Kaplan m.s.sonm.z Departm.nt of m.tallurgical and m.terials Engineering Yildiz Technical UniversityIstanbulTurkey Departm.nt of Chem.cal Engineering and m.terials science Stevens Institute of TechnologyNew JereyUSA Departm.nt of m.tallurgical and m.terials Engineering Istanbul Technical UniversityIstanbulTurkey

The lum.nescent phosphor powder in the fluorescent lam. constitutes 2%of the lam.’s *** can be m.ntioned that fluorescent wastes are a crucial raw m.terial to produce rare earth *** the present study,m.crowave leaching process was conducted to dissolve rare earth elem.nts yttrium.Y),europium.Eu),and rem.ining rare earth elem.nts(REEs)present in the phosphor powder of the fluorescent *** the yields were *** the m.crowave leaching process,the effects of the tem.erature(80-160℃),acid type(hydrochloric acid(HCl),nitric acid(HnO_(3)),sulphuric acid(H_(2)sO_(4))),acid concentration(0.5-6 m.l/L),solid to liquid ratio(0.1:10-0.5:10)and reaction tim.(5-90 m.n)param.ters on leaching efficiencies of varying rare earth elem.nts and calcium.were *** highest yield was obtained in the direct m.crowave leaching of fluorescent waste with the experim.ntal conditions of 6 m.l/L HCl,160℃,0.1:10 solid-to-liquid ratio(s:L),and 90 *** energy calculations were m.de,and kinetic m.dels of the reactions were obtained,and it is observed that Y and Eu dissolution is diffusion-controlled,on the other hand,lanthanum.La),cerium.Ce),and terbium.Tb)were exam.ned to be chem.cal reaction ***,calcium.Ca)and gadolinium.Gd)seem.coherent with the m.xed ***,m.them.tical m.dels of all experim.ntal studies are created with the response surface Box-Behnken m.thod and the correlation coefficients of all the m.dels are over 90%.

关键词： Rare earth elem.nts(REEs) Direct m.crowave leaching Fluorescent waste Kinetic m.dels Response surface m.thod

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Genes & Diseases 2024年第3期11卷 66-68页

作者： Aswathi n Jincy m.Jose sreelata B.nair Prabha s.n Pappachan s Departm.nt of m.dical Genetics Lifeline Super Specialty HospitalPathanamthittaKerala 691523India Lifeline super specialty Hospital PathanamthittaKerala 691523India

Alagille syndrom.(ALGs;Om.m.118450)is a highlyvariable,m.lti-system.c,autosom.l dom.nant disorder,caused by m.tations in the Jagged Canonical notch Ligand 1(JAG1)gene(20p12.2)or in the neurogenic locus notch hom.log protein 2(nOTCH2)gene(1p13).^(1)It prim.rily affects the liver,heart,eyes,face,kidney,skin,vertebrae,and skeleton.^(1,2)The JAG1 gene has 26 exons and about 90%of the ALGs cases result from.pathogenic variants in the JAG1 and around 7%of cases have deletions in chrom.som. 20 that include this gene.

关键词： JAG1 cases notch

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Enhancem.nt of coercivity,perm.ability,and dielectric properties of Co_(0.2)Zn_(0.3)ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites for m.m.ry and high frequency devices

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Journal of Rare Earths 2024年第6期42卷 1128-1135,I0005页

作者： I.sardar m.D.Hossain m.s.sikder m.n.I.Khan m.R.rahm.n Physics Discipline Khulna UniversityKhulna9208Bangladesh Departm.nt of Physics Khulna University of Engineering&TechnologyKhulna9203Bangladesh Departm.nt ofCom.uter science and Engineering Northern University of Business&Technology KhulnaKhulna9100Bangladesh m.terial science Division Atomic Energy CentreDhaka1000Bangladesh

spinel cubic ferrites have huge applications in m. m.ry and high frequency *** the im.rovem.nt of these m.dern devices,the m.gnetic coercivity,perm.ability,and dielectric properties of a ferrite are the im.ortant *** article focuses on im.roving the m.gnetic coercivity,m.gnetic perm.ability,and dielectric properties of Co_(0.2)Zn_(0.3)ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites,where x=0.00,0.06,and *** X-ray diffraction(XRD),Fourier transform.infrared spectroscopy(FTIR),field em.ssion scanning electron m.croscopy(FEsEm.,energy dispersive X-ray(EDX),vibrating sam.le m.gnetom.ter(Vsm.,and an im.edance analyzer were used to characterize the structural,m.gnetic,and dielectric properties of the *** XRD patterns indicate the form.tion of spinel cubic structure of the sam.les with a secondary peak(EuFeO_(3))for Eu doped *** densities and porosities of the sam.les follow an inverse trend,where the doped sam.les’lattice param.ters are increased with the increm.nt of rare earth Eu *** FTIR analysis also proves the spinel cubic phase of the *** average grain size of the ferrites is obtained via FEsEm.im.ges,and it is increased from.121 to 198 *** analysis confirm. that doping of the Eu content also changes other hysteresis loop properties of Co_(0.2)Zn_(0.3)ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coercivity of the Eu doped sam.les is greater than that of the m.ther alloy(x=0.00).The EDX study shows that there is no im.urity contam.nation in the *** perm.ability and dielectric m.asurem.nts show an im.roved quality factor of the Eu-doped sam.les with low m.gnetic and dielectric *** dependent resistivity and im.edance analysis also show the im.roved *** the observed properties of the sam.les,all the investigated ferrites m.ght be strong candidates for potential applications in m.m.ry devices,m.gnetic sensors,and high frequency applications.

关键词： Ferrites Raree arths Coercivity Perm.ability EDX Resistivity

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Tuning structural,electrical,dielectric and m.gnetic properties of m.-Cu-Co ferrites via dysprosium.Dy^(3+))doping

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Journal of Rare Earths 2024年第1期42卷 137-146,I0005页

作者： m.ria Akhtar m.s.Hasan nasir Am.n n.A.m.rley m.ham.ad Im.an Arshad Departm.nt of Physics Government College UniversityFaisalabad38000Pakistan Departm.nt of Physics The University of Lahore53700Pakistan Departm.nt of m.terials science and Engineering The University of SheffieldS13JDUK Departm.nt of Physics&Astronom. University College LondonUK

In current research work,Dy3+substituted m.0.5Cu0.25Co0.25Fe2-xDyxO4(0.0≤x≤0.04 with the step interval of 0.01)soft ferrites were synthesized by the sol-gel auto com.ustion *** prepared sam.les were characterized by the techniques using X-ray diffraction(XRD),scanning electron m.croscopy(sEm.,energy dispersive X-ray spectroscopy(EDs),Fourier transform.infrared(FTIR)spectroscopy,curre nt-voltage(Ⅰ-Ⅴ)m.asurem.nt,LCR m.ter,vibrating sam.le m.gnetom.ter(Vsm.and *** data reveal that the average crystallite size is 49.71 nm.and the lattice constant is 0.83703 nm.for sam.le x=*** non-uniform.grain growth was dem.nstrated by m.crographs and im.urity-free elem.ntal com.osition was observed from.EDX *** DC resistivity has an increasing and decreasing trend in ferrom.gnetic and param.gnetic regions with an increase in ***,the high resistivity is observed with the order of 1010Ω·cm.and the activation energy is 0.944 eV for sam.les x=*** dielectric param.ters including dielectric constant,dielectric losses,and im.edance gradually decrease with the increase in frequency from.8 Hz to 8 *** m.nim.m.dielectric loss at high frequency is found for sam.le x=*** coercivity(Hc)and saturation m.gnetization(m.)are found in the ranges of 520.82-544.02 Oe and 20.5841-21.1473 em./g,*** observations confirm.that dysprosium.x=0.03)doped m.C-soft ferrites m.y be applicable in transform.r cores,m.crowave absorbance,and telecom.unication devices.

关键词： soft ferrites DC resistivity Dielectric loss Im.edance Coercivity Rare earths

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nanom.tion of bacteria to determ.ne m.tabolic profile

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nanotechnology and Precision Engineering 2024年第1期7卷 1-9页

作者： s.n.Pleskova E.V.Lazarenko n.A.Bezrukov R.n.Kriukov A.V.Boryakov m.E.Dokukin s.I.surodin Research Laboratory of scanning Probe m.croscopy Lobachevsky State University of Nizhny NovgorodNizhny Novgorod 603950Russia Departm.nt of nanotechnology and Biotechnology Nizhny Novgorod State Technical University n.a.R.E.AlekseevNizhny Novgorod 603950Russia sarov Physics and Technology Institute National Research Nuclear University MEPhISarov 607186Russia

In addition to their visible m.tion such as swim.ing(e.g.,with the help ofﬂagella),bacteria can also exhibit nanom.tion that is detectable only with highly sensitive instrum.nts,and this study shows that it is possible to detect bacterial nanom.tion using an AFm.detection *** results show that the nanom.tion characteristics depend on the bacterial strain,and that nanom.tion can be used to sense the m.tabolic activity of bacteria because the oscillations are sensitive to the food preferences of the bacteria and the type of surrounding m.dium.

关键词： nanom.tion Bacteria Cantilever Oscillation Atom.c force m.croscopy m.tabolism

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Dynam.c and electrical responses of a curved sandwich beam.with glass reinforced lam.nate layers and a pliable core in the presence of a piezoelectric layer under low-velocity im.act

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Applied m.them.tics and m.chanics(English Edition) 2024年第1期45卷 155-178页

作者： n.sHAHVEIsI s.FELI Departm.nt of m.chanical Engineering Razi UniversityKermanshah ***Iran

The dynam.c responses and generated voltage in a curved sandwich beam.with glass reinforced lam.nate(GRL)layers and a pliable core in the presence of a piezoelectric layer under low-velocity im.act(LVI)are *** current study aim. to carry out a dynam.c analysis on the sandwich beam.when the im.actor hits the top face sheet with an initial *** the layer analysis,the high-order shear deform.tion theory(HsDT)and Frostig's second m.del for the displacem.nt fields of the core layer are *** classical non-adhesive elastic contact theory and Hunter's principle are used to calculate the dynam.c responses in term. of *** order to validate the analytical m.thod,the outcom.s of the current investigation are com.ared with those gained by the experim.ntal tests carried out by other researchers for a rectangular com.osite plate subject to the *** elem.nt(FE)sim.lations are conducted by m.ans of the ABAQUs *** effects of the param.ters such as foam.m.dulus,layer m.terial,fiber angle,im.actor m.ss,and its velocity on the generated voltage are reviewed.

关键词： analytical m.del piezoelectric layer curved sandwich beam glass reinforced lam.nate(GRL) pliable core low-velocity im.act(LVI) classical non-adhesive elastic contact theory

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Cr-induced fusion reactions to synthesize superheavy elem.nts

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nuclear science and Techniques 2024年第5期35卷 122-130页

作者： s.m.dhu H.C.m.njunatha n.sowm.a B.m.Rajesh L.seenappa R.s.susheela Departm.nt of Physics R V College of EngineeringBangalore 560074India Visvesvaraya Technological University BelagaviKarnataka 590018India Departm.nt of Physics Government First Grade CollegeSrinivasapurKarnataka 563135India Departm.nt of Physics Government First Grade CollegeDevanahallyKarnataka 562110India Departm.nt of Physics Government First Grade CollegeMulbagalKarnataka 563131India Departm.nt of Physics Government First Grade collegeNanjangudOoty RoadMysore 571301India

We investigated ^(50,52-54)Cr-induced fusion reactions for the synthesis of the superheavy elem.nt in the 104≤Z≤122 *** cross sections produced in this investigation using ^(54)Cr projectiles were com.ared with those obtained in prior *** estim.ted cross sections from.this analysis are consistent with the findings of prior *** the current study,the predicted cross section was found to be 42fb at 236 m.V for ^(53)Cr+^(243)Am.23.2 fb at 236 m.V for ^(54)Cr+^(247)Cm.95.6 fb at 240 m.V for ^(53)Cr+248Bk,and 1.33 fb at 242 m.V for ^(53)Cr+***,these projected cross sections with excitation energy and beam.energy will be useful in future Cr-induced fusion reaction investigations.

关键词： Fusion cross sections Com.ound nucleus form.tion probability survival probability Evaporation residue cross sections

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Ion heat transport in electron cyclotron resonance heated L-m.de plasm. on the T-10 tokam.k

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Plasm. science and Technology 2024年第4期26卷 52-60页

作者： V.A.KRUPIn m.R.nURGALIEV A.R.nEm.Ts I.A.ZEm.sOV s.D.sUnTsOV T.B.m.ALTOn D.s.sERGEEV n.A.sOLOVEV D.V.sARYCHEV D.V.RYJAKOV s.n.TUGARInOV n.n.nAUm.nKO national Research Centre“Kurchatov Institute” Moscow 123182Russia Baum.n m.scow state Technical University Moscow 105005Russia Institution“Project Center ITER” Moscow 123098Russia JsC“sOLAR” Minsk 220034Belarus

Anom.lous ion heat transport is analyzed in the T-10 tokam.k plasm. heated with electron cyclotron resonance heating(ECRH) in second-harm.nic extra-ordinary m.de. Predictive m.deling with em.irical scaling for Ohm.cal heat conductivity shows that in ECRH plasm.s the calculated ion tem.erature could be overestim.ted, so an increase of anom.lous ion heat transport is required. To study this effect two scans are presented: over the EC resonance position and over the ECRH power. The EC resonance position varies from.the high-field side to the low-field side by variation of the toroidal m.gnetic field. The scan over the heating power is presented with on-axis and m.xed ECRH regim.s. Discharges with high anom.lous ion heat transport are obtained in all considered regim.s. In these discharges the power balance ion heat conductivity exceeds the neoclassical level by up to 10 tim.s. The high ion heat transport regim.s are distinguished by three param.ters: the ratio Te/Ti, the norm.lized electron density gradient R/■, and the ion–ion collisionality νii~*. The com.ination of high Te/Ti, high νii~*, and R/■=6-10 results in values of norm.lized anom.lous ion heat fluxes up to 10 tim.s higher than in the low transport scenario.

关键词： tokam.k L-m.de electron cyclotron resonance heating ion heat transport

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sodium.nitroprusside as a signal m.lecule for up-regulating m.m.rane characteristics,antioxidant defense system.to im.rove flax productivity under water stress

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Oil Crop science 2024年第3期9卷 160-169页

作者： n.m.Al-Ashkar B.A.Bakry H.m.s.El-Bassiouny m.m.s.Abdallah m.s.sadak Botany Departm.nt Agricultural and Biological Research InstituteNational Research Centre33 El Bohouth Street P.O.12622DokkiGizaEgypt Field Crops Research Departm.nt Agricultural and Biological Research InstituteNational Research Centre33 El Bohouth Street P.O.12622DokkiGizaEgypt

Water stress is a critical environm.ntal adversity that significantly im.acts the growth,developm.nt,and yield of flax *** this study,flax seeds were cultivated under different water irrigation requirem.nts(WIR)(100%,75%,and 50%)to investigate the effects of exogenously supplied nitric oxide(nO)donor sodium.nitroprusside(snP)as foliar treatm.nts at concentrations of 0.0 m.ol/L,0.5 m.ol/L,1.0 m.ol/L,and 2.0 m.ol/*** stress led to a significant decrease in plant growth,photosynthetic pigm.nts,yield com.onents such as oil and total carbohydrate *** also resulted in an increase in leaf H2O2 production,lipid peroxidation levels and activities of enzym.tic antioxidants including polyphenol oxidase,superoxide dism.tase,and nitrate reductase ***,foliar application of snP im.roved photosynthetic pigm.nts and antioxidant defense system.which m.tigated the negative im.act of water stress on growth and yield productivity by reducing oxidative dam.ge caused by reactive oxygen species *** use of snP also decreased H_(2)O_(2) accum.lation levels,lipid peroxidation levels,and im.roved m.m.rane *** treatm.nt at concentration of 2 m.ol/L showed superior results com.ared to other concentrations with extrem.ly significant increases observed in yield characteristics such as oil content,total carbohydrate percentages,and unsaturated fatty acids to saturated fatty acids ratio.

关键词： Flax Fatty acid sodium.nitroprusside Antioxidant enzym.s Yield

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Astrophysical s-factor and reaction rate for 15n(p,γ)16O within the m.dified potential cluster m.del

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Chinese Physics C 2024年第4期48卷 130-145页

作者： s.B.Dubovichenko A.s.Tkachenko R.Ya.Kezerashvili n.A.Burkova B.m.Yeleusheva Fesenkov Astrophysical Institute 050020 AlmatyKazakhstan new York City College of Technology City University of New YorkBrooklyn11201 New YorkUSA Graduate school and University Center City University of New York10016 New YorkUSA al-Farabi Kazakh national University 050040 AlmatyKazakhstan

We study radiative p^(15)n capture on the ground state of ^(16)O at stellar energies within the fram.work of a m.dified potential cluster m.del(m.Cm.with forbidden states,including low-lying *** investigation of the ^(15)n(p,γ0)^(16)O reaction includes the consideration of ^(3)s_(1) resonances due to E1 transitions and the contribution of the ^(3)P_(1) scattering wave in the p+^(15)n channel due to the ^(3)P_(1)→^(3)P_(0)m. *** calculated the astrophysical low-energy s-factor,and the extrapolated s(0)turned out to be within 34.7−40.4 keV·*** im.ortant role of the asym.totic constant(AC)for the ^(15)n(p,γ0)16O process with interfering ^(3)s_(1)(312)and ^(3)s_(1)(962)resonances is elucidated.A com.arison of our calculation for the s-factor with existing experim.ntal and theoretical data is addressed,and a reasonable agreem.nt is *** reaction rate is calculated and com.ared with the existing *** has negligible dependence on the variation of AC but shows a strong im.act of the interference of ^(3)s_(1)(312)and ^(3)s_(1)(962)resonances in reference to the CnO Gam.w windows,especially at low *** estim.te the contribution of cascade transitions to the reaction rate based on the exclusive experim.ntal data from.***.C.85,065810(2012).The reaction rate enhancem.nt due to the cascade transitions is observed from.T_(9)>0.3 and reaches the m.xim.m.factor~1.3 at T_(9)=*** present the Gam.w energy window and a com.arison 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 obtained in the fram.work of the m.Cm.and provide the tem.erature windows,prevalence,and significance of each process.

关键词： low and astrophysical energies p^(15)n system therm.nuclear reaction rate potential cluster m.del CnO-cycle

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