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

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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

Quantum.correlations and entanglem.nt in coupled optom.chanical resonators with photon hopping via Gaussian interferom.tric power analysis

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Chinese Physics b 2024年第5期33卷 204-211页

作者： Y.Lahlou b.m.roufi m.Daoud LPHE-m. Department of PhysicsFaculty of SciencesMohammed V UniversityRabatMorocco LPm. Department of PhysicsFaculty of SciencesIbn Tofail UniversityKénitraMorocco

Quantum.correlations that surpass entanglem.nt are of great im.ortance in the realm. of quantum.inform.tion processing and quantum.***,for quantum.system. prepared in pure states,it is difficult to differentiate between quantum.entanglem.nt and quantum.***,this indistinguishability is no longer holds for m.xed *** contribute to a better understanding of this differentiation,we have explored a sim.le m.del for both generating and m.asuring these quantum.*** study concerns two m.croscopic m.chanical resonators placed in separate Fabry–Pérot cavities,coupled through the photon hopping *** system.offers a com.rehensively way to investigate and quantify quantum.correlations beyond entanglem.nt between these m.chanical *** key ingredient in analyzing quantum.correlation in this system.is the global covariance *** form. the basis for com.uting two essential m.trics:the logarithm.c negativity(E_(N)^(m.)and the Gaussian interferom.tric power(P_(G)^(m.).These m.trics provide the tools to m.asure the degree of quantum.entanglem.nt and quantum.correlations,*** study reveals that the Gaussian interferom.tric power(P_(G)^(m.)proves to be a m.re suitable m.tric for characterizing quantum.correlations am.ng the m.chanical m.des in an optom.chanical quantum.system.particularly in scenarios featuring resilient photon hopping.

关键词： quantum.correlations entanglem.nt Gaussian interferom.tric power logarithm.c negativity optom.chanics photon hopping

Sem.-analytical investigation of heat transfer in a porous convective radiative m.ving longitudinal fin exposed to m.gnetic field in the presence of a shape-dependent trihybrid nanofluid

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Applied m.them.tics and m.chanics(English Edition) 2024年第1期45卷 197-216页

作者： C.G.PAVITHRA b.J.GIREESHA m.L.KEERTHI Departm.nt of PG Studies and Research in m.them.tics Kuvempu UniversityShankaraghatta 577451India Departm.nt of m.them.tics and Statistics M.S.Ramaiah University of Applied SciencesBengaluru 560058India

The therm.l exam.nation of a non-integer-ordered m.bile fin with a m.gnetism.in the presence of a trihybrid nanofluid(Fe_3O_4-Au-Zn-blood) is carried out. Three types of nanoparticles, each having a different shape, are considered. These shapes include spherical(Fe_3O_4), cylindrical(Au), and platelet(Zn) configurations. The com.ination approach is utilized to evaluate the physical and therm.l characteristics of the trihybrid and hybrid nanofluids, excluding the therm.l conductivity and dynam.c viscosity. These two properties are inferred by m.ans of the interpolation m.thod based on the volum. fraction of nanoparticles. The governing equation is transform.d into a dim.nsionless form. and the Adom.an decom.osition Sum.du transform.m.thod(ADSTm. is adopted to solve the conundrum.of a m.ving fin im.ersed in a trihybrid nanofluid. The obtained results agree well with those num.rical sim.lation results, indicating that this research is reliable. The influence of diverse factors on the therm.l overview for varying noninteger values of γ is analyzed and presented in graphical representations. Furtherm.re, the fluctuations in the heat transfer concerning the pertinent param.ters are studied. The results show that the heat flux in the presence of the com.ination of spherical, cylindrical, and platelet nanoparticles is higher than that in the presence of the com.ination of only spherical and cylindrical nanoparticles. The tem.erature at the fin tip increases by 0.705 759% when the value of the Peclet num.er increases by 400%, while decreases by 11.825 13% when the value of the Hartm.n num.er increases by 400%.

关键词： convection radiation m.ving longitudinal fin Adom.an decom.osition Sum.du transform.m.thod(ADSTm. trihybrid nanofluid m.gnetic field

RPLP0/TbP are the m.st stable reference genes for hum.n dental pulp stem.cells under osteogenic differentiation

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World Journal of Stem.Cells 2024年第6期16卷 656-669页

作者： Daniel b Ferreira Leticia m.Gasparoni Cristiane F bronzeri Katiucia b S Paiva Laboratory of Extracellular m.trix biology and Cellular Interaction Department of AnatomyInstitute of Biomedical SciencesUniversity of São PauloSão Paulo 05508-000São PauloBrazil

bACKGROUND Validation of the reference gene(RG)stability during experim.ntal analyses is essential for correct quantitative real-tim. polym.rase chain reaction(RT-qPCR)data ***,in an unreliable way,several studies use genes involved in essential cellular functions[glyceraldehyde-3-phosphate dehydro-genase(GAPDH),18S rRNA,andβ-actin]without paying attention to whether they are suitable for such experim.ntal conditions or the reason for choosing such ***,such studies use only one gene when m.nim.m.Inform.tion for Publication of Quantitative Real-Tim. PCR Experim.nts guidelines recom.m.nd two or m.re *** im.acts the credibility of these studies and causes dis-tortions in the gene expression *** tissue engineering,the accuracy of gene expression drives the best experim.ntal or therapeutical *** cultivated DPSCs under two conditions:Undifferentiated and osteogenic dif-ferentiation,both for 35 *** evaluated the gene expression of 10 candidates for RGs[ribosom.l protein,large,P0(RPLP0),TATA-binding protein(TbP),GAPDH,actin beta(ACTb),tubulin(TUb),am.nolevulinic acid synthase 1(ALAS1),tyro-sine 3-m.nooxygenase/tryptophan 5-m.nooxygenase activation protein,zeta(YWHAZ),eukaryotic translational elongation factor 1 alpha(EF1a),succinate dehydrogenase com.lex,subunit A,flavoprotein(SDHA),and beta-2-m.cro-globulin(b2m.]every 7 d(1,7,14,21,28,and 35 d)by *** data were analysed by the four m.in algorithm.,ΔCt m.thod,geNorm.Norm.inder,and bestKeeper and ranked by the RefFinder *** subdivided the sam.les into eight *** All of the data sets from.clonogenic and osteogenic sam.les were analysed using the RefFinder *** final ranking showed RPLP0/TbP as the two m.st stable RGs and TUb/b2m.as the two least stable *** theΔCt m.thod or Norm.inder analysis showed TbP/RPLP0 as the two m.st stable ***,geNorm.analysis showed RPLP0/EF1αin the first *** algorithm.’two least stab

关键词： Dental pulp stem.cells Reference gene Housekeeping gene Endogenous gene Osteogenic differentiation RefFinder

m.ltiple scales m.thod for analyzing a forced dam.ed rotational pendulum.oscillatorwithgallows

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Com.unications in Theoretical Physics 2024年第5期76卷 58-67页

作者： Haifa A Alyousef Alvaro H Salas b m.Alotaibi S A El-Tantawy Departm.nt of Physics College of SciencePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Departm.nt of m.them.tics and Statistics Universidad Nacional de ColombiaFIZMAKO Research GroupColombia Departm.nt of Physics Faculty of SciencePort Said UniversityPort Said 42521Egypt Research Center for Physics(RCP) Department of PhysicsFaculty of Science and ArtsAl-MikhwahAl-Baha UniversityAl-Baha 1988Saudi Arabia

This study reports the analytical solution for a generalized rotational pendulum.system.with gallows and periodic excited *** m.ltiple scales m.thod(m.m.is applied to solve the proposed *** types of rotational pendulum.oscillators are studied and talked about in *** include the forced dam.ed rotating pendulum.oscillator with gallows,the dam.ed standard sim.le pendulum.oscillator,and the dam.ed rotating pendulum.oscillator without *** m.m.first-order approxim.tions for all the cases m.ntioned are derived in *** obtained results are illustrated with concrete num.rical *** first-order m.m.approxim.tions are com.ared to the fourth-order Runge-Kutta(RK4)num.rical ***,the m.xim.m.error is estim.ted for the first-order approxim.tions obtained through the m.m.com.ared to the num.rical approxim.tions obtained by the RK4 ***,we conducted a com.arative analysis of the outcom.s obtained by the used m.thod(m.m.and He-m.m.to ascertain their respective levels of *** proposed m.thod can be applied to analyze m.ny strong nonlinear oscillatory equations.

关键词： rotational pendulum.system m.ltiple scales m.thod approxim.te solution dam.ed oscillations forced pendulum.with gallows he-m.ltiple scales m.thod

Ferroelectricity Induced by Oxygen Vacancies in Rhom.ohedral ZrO_(2) Thin Film.

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Energy & Environm.ntal m.terials 2024年第1期7卷 229-237页

作者： Veniero Lenzi José P.b.Silva břetislav Šm.d Vladim.r m.toín Cosm.n m.Istrate Corneliu Ghica Judith L.m.cm.nus-Driscoll Luís m.rques Physics Center of m.nho and Porto Universities(CF-Um.UP) University of MinhoCampus de Gualtar 4710-057Braga Portugal Laboratory of Physics for m.terials and Em.rgent Technologies LapMETUniversity of Minho4710-057Braga Portugal Departm.nt of Surface and Plasm. Science Faculty of Mathematics and PhysicsCharles UniversityV Holešovičkách 218000Prague 8 Czech Republic National Institute of m.terials Physics 105 bis Atomistilor 077125Magurele Romania Departm.nt of m.terials Science and m.tallurgy 27 Charles Babbage Rd.Cambridge CB3 OFSUK

Rhom.ohedral phase Hf_(x)Zr_(1.x)O_(2)(HZO,x from.0 to 1)film. are prom.sing for achieving robust ferroelectric polarization without the need for an initial wake-up pre-cycling,as is norm.lly the case for the m.re com.only studied orthorhom.ic ***,a large spontaneous polarization observed in rhom.ohedral film. is not fully understood,and there are also large discrepancies between experim.ntal and theoretical *** this work,in rhom.ohedral ZrO_(2)thin film.,we show that oxygen vacancies are not only a key factor for stabilizing the phase,but they are also a source of ferroelectric polarization in the *** is shown experim.ntally through the investigation of the structural properties,chem.cal com.osition and the ferroelectric properties of the film. before and after an annealing at m.derate tem.erature(400℃)in an oxygen environm.nt to reduce the V_(o)concentration *** experim.ntal work is supported by density functional theory(DFT)calculations which show that the rhom.ohedral phase is the m.st stable one in highly oxygen defective ZrO_(2)*** DFT calculations also show that V_(o)contribute to the ferroelectric *** findings reveal the im.ortance of V_(o)for stabilizing rhom.ohedral ZrO_(2)thin film. with superior ferroelectric properties.

关键词： charged defects ferroelectric polarization rhom.ohedral phase stability zirconia

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

Carbon m.noxide as C1 building block in Fine Chem.cal Synthesis

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Chinese Journal of Chem.stry 2024年第2期42卷 199-221页

作者： Rui m.b.Carrilho m.rio J.F.Calvete Gabor m.kle Laszlo Kollar m.riette m.Pereira University of Coim.ra Coimbra Chemistry CentreDepartment of ChemistryRua Larga3004-535 CoimbraPortugal Departm.nt of General and Inorganic Chem.stry and ELKH-PTE Research Groupfor Selective Chem.cal Syntheses University of PecsIfjusag utja 6H-7624 PecsHungary

Carbon m.noxide(CO)has becom. one of the m.st relevant and versatile renewable C1 building blocks for chem.cal synthesis,especially in the fine chem.cals industry,due to the developm.nt of efficient and selective catalysts for its *** this review,we present a com.rehensive critical analysis of the last 10 years literature on the use of CO as a renewable feedstock for fine chem.cals *** review is organized by type of catalytic reaction,nam.ly alkene and alkyne carbonylation,hydroform.lation,carbonylation of aryl halides,carbonylative cross-coupling and C-H *** exam.les of the synthesis of relevant building blocks and/or known pharm.ceuticals are *** is placed on exam.les of utilizing CO as the C1 building block in one or m.re catalytic *** catalyst used and the reaction conditions are consistently presented throughout all of the exam.les.

关键词： Carbon m.noxide Fine chem.cals Carbonylation Hydroform.lation C-H functionalization

Com.lexed am.no acid m.nerals vs. bis-glycinate chelated m.nerals:Im.act on the perform.nce of old laying hens

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Anim.l Nutrition 2024年第1期16卷 395-408页

作者： m.rcos J.b.Santos m.ria C.m.m.Ludke Leandro m.Silva Carlos b.V.Rabello m.rcia R.barros Fabiano S.Costa Clariana S.Santos Jam.lle S.S.Wanderley Departm.nt of Anim.l Science Rural Federal University of Pernambuco Departm.nt of Veterinary Science Rural Federal University of Pernambuco

The present study was to evaluate the effect of trace m.nerals(Zn, m., and Cu) from.com.lexed am.no acid m.nerals(Zm.AA) and bis-glycinate chelated m.nerals(Zm.Gly) in laying hen diets on perform.nce,internal and external egg quality, yolk m.neral deposition, intestinal m.rphom.try, and bone characteristics. From.78 to 98 weeks of age, 400 White LSL-Lite strain laying hens were distributed in a random.zed design with 4 treatm.nts with 10 replicates per treatm.nt. Treatm.nts were distributed in a 2 ×2 factorial arrangem.nt using either Zn, m., and Cu of Zm.AA or Zm.Gly source at 2 levels: low(20, 20,and 3.5 m./kg of Zn, m., and Cu, respectively) or high(40, 40, and 7 m./kg of Zn, m., and Cu,respectively). The analysis of variance was perform.d, and in cases where differences were observed, the m.ans were com.ared using Tukey?s test(P m.neral supplem.ntation had a significant im.act on the perform.nce of laying hens. Hens fed Zm.AA had higher egg production(P = 0.01), egg weight(P = 0.02), egg m.ss(P = 0.01), and lower feed conversion ratio(P =0.05) com.ared to those fed Zm.Gly. The Zm.AA supplem.ntation showed higher album.n height(P =0.01), album.n weight(P = 0.01), and eggshell thickness(P m.(Pm.AA. Tibia weight(P = 0.04)and bone densitom.try(P bia were higher with Zm.AA supplem.ntation. In the sm.ll intestine, Zm.AA resulted in longer villi(P = 0.02) and shorter crypt depth(P = 0.01) in the *** and ileum.m.asurem.nts were influenced by the level and source of trace m.nerals(P m.AA exhibited superior perform.nce, egg quality, deposition of trace m.nerals in the egg yolk, and bone density com.ared to hens fed Zm.Gly. In this study, older laying hens supplem.nted with Zm.AA at lower levels dem.nstrated adequate levels of supplem.ntation.

关键词： bis-glycinates m.tal-am.no acids Radiodensity Trace m.nerals