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Exa.t solutions for ma.netohydrodyna.ic na.ofluids flow a.d hea. tra.sfer over a.permea.le a.isymmetric ra.ia.ly stretching/shrinking sheet

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Chinese Physics B 2024年第2期33卷 108-114页

作者： U.S.ma.a.a.eshwa. G.P.Va.itha.L.m.Pérez Ema. H.aly I.Pop depa.tment of Studies in ma.hema.ics Davangere UniversityShivagangothriDavangereIndia depa.ta.ento de F´ısica FACIUniversidad de Tarapac´aCasilla 7DAricaChile depa.tment of ma.hema.ics Faculty of EducationAin Shams UniversityRoxyCairoEgypt depa.tment of ma.hema.ics Babes-Bolyai University400084 Cluj-NapocaRomania

We report on the ma.netohydrodyna.ic impa.t on the a.isymmetric flow of a._(2)O_(3)/Cu na.opa.ticles suspended in H_(2)O pa.t a.stretched/shrinked *** the use of pa.tia. differentia. equa.ions a.d the corresponding thermophysica. cha.a.teristics of na.opa.ticles,the physica. flow process is *** resulta.t nonlinea. system of pa.tia. differentia. equa.ions is converted into a.system of ordina.y differentia. equa.ions using the suita.le simila.ity *** tra.sformed differentia. equa.ions a.e solved *** of the ma.netic pa.a.eter,solid volume fra.tion a.d stretching/shrinking pa.a.eter on momentum a.d tempera.ure distribution ha.e been a.alyzed a.d interpreted *** skin friction a.d Nusselt number were a.so *** a.dition,existence of dua. solution wa. deduced for the shrinking sheet a.d unique solution for the stretching ***,a._(2)O_(3)/H_(2)O na.ofluid flow ha. better therma. conductivity on compa.ing with Cu/H_(2)O ***,it wa. found tha. the first solutions of the strea. a.e sta.le a.d physica.ly rea.iza.le,wherea. those of the second ones a.e unsta.le.

关键词： ma.netohydrodyna.ic na.ofluid stretching/shrinking sheet a.isymmetric flow a.alytica. solution suction/injection

Viscoela.tic potentia. flow insta.ility theory of Rivlin-Ericksen electrified fluids of cylindrica. interfa.e

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Journa. of Ocea. Engineering a.d Science 2024年第4期9卷 311-316页

作者： d.m.mosta.a depa.tment of ma.hema.ics College of ScienceQassim UniversityPO Box 6644Buraidah 51452Saudi Arabia depa.tment of ma.hema.ics Faculty of EducationAin Shams UniversityRoxyCairoEgypt

a.linea. electrohydrodyna.ic Kelvin-Helmholtz insta.ility of the interfa.e between two viscoela.tic Rivlin-Ericksen fluids enclosed by two concentric horizonta. cylinders ha. been studied via.the viscoela.tic potentia. flow *** dispersion equa.ion of complex coefficients for a.ymmetric disturba.ce ha. been obta.ned by using norma. mode *** sta.ility criteria.a.e a.alyzed theoretica.ly a.d illustra.ed *** ima.ina.y pa.t of growth ra.e is plotted versus the wa.e *** influences of dyna.ic viscoela.tic,uniform velocities,Reynolds number,electric field,dyna.ic viscosity,density fluids ra.io,dielectric consta.t ra.io a.d inner fluid fra.tion on the sta.ility of the system a.e *** study finds its significa.ce in Ocea. pipelines to tra.sfer oil or ga. such a. Ea.tern Siberia.Pa.ific Ocea. oil pipeline.

关键词： Rivlin-Ericksen fluid Cylindrica. flow Viscoela.tic potentia. flow Electrohydrodyna.ics sta.ility

Numerica. ca.cula.ion of Z-sca. mea.urements for nonlinea. media.with la.ge pha.e shift

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Optoelectronics Letters 2024年第3期20卷 177-182页

作者： m.d.Zida. a.a.la.ham depa.tment of Physics Atomic Energy Commission of SyriaP.O.Box 6091DamascusSyria

We ha.e reported the cha.a.teristics of a.Z-sca. for the poly(a.a.eylylidene-a.ylene)(da.a. polymer, a. nonlinea. medium with a.la.ge nonlinea. pha.e shift using continuous-wa.e(CW) la.er bea.. It ha. been verified tha. the Fresnel diffra.tion model is a.plica.le for a.alyses of Z-sca. mea.urements with da.a.polymer a. high la.er power. It wa. found tha. Z-sca. curves with pea.-to-va.ley fea.ures a.pea. a. the a.plied light intensity increa.es in the ca.e of a.la.ge nonlinea. pha.e shift. The Z-sca. experiments were ca.ried out using a.CW la.er to verify the theoretica. ca.cula.ions in the ca.e of a.la.ge nonlinea. pha.e shift model. Our results show good a.reements between the experimenta. da.a.a.d the proposed theoretica. models.

关键词： nonlinea. pha.e media

Enha.cement of coercivity,permea.ility,a.d dielectric properties of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites for memory a.d high frequency devices

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Journa. of Ra.e Ea.ths 2024年第6期42卷 1128-1135,I0005页

作者： I.Sa.da. m.d.Hossa.n m.S.Sikder m.N.I.Kha. m.R.Ra.ma. Physics discipline Khulna UniversityKhulna9208Bangladesh depa.tment of Physics Khulna University of Engineering&TechnologyKhulna9203Bangladesh depa.tment ofComputer Science a.d Engineering Northern University of Business&Technology KhulnaKhulna9100Bangladesh ma.eria. Science division Atomic Energy CentreDhaka1000Bangladesh

Spinel cubic ferrites ha.e huge a.plica.ions in me mory a.d high frequency *** the improvement of these modern devices,the ma.netic coercivity,permea.ility,a.d dielectric properties of a.ferrite a.e the importa.t *** a.ticle focuses on improving the ma.netic coercivity,ma.netic permea.ility,a.d 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,a.d *** X-ra. diffra.tion(XRd),Fourier tra.sform infra.ed spectroscopy(FTIR),field emission sca.ning electron microscopy(FESEm),energy dispersive X-ra.(EdX),vibra.ing sa.ple ma.netometer(VSm),a.d a. impeda.ce a.alyzer were used to cha.a.terize the structura.,ma.netic,a.d dielectric properties of the *** XRd pa.terns indica.e the forma.ion of spinel cubic structure of the sa.ples with a.seconda.y pea.(EuFeO_(3))for Eu doped *** densities a.d porosities of the sa.ples follow a. inverse trend,where the doped sa.ples’la.tice pa.a.eters a.e increa.ed with the increment of ra.e ea.th Eu *** FTIR a.alysis a.so proves the spinel cubic pha.e of the *** a.era.e gra.n size of the ferrites is obta.ned via.FESEm ima.es,a.d it is increa.ed from 121 to 198 *** a.alysis confirms tha. doping of the Eu content a.so cha.ges 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 sa.ples is grea.er tha. tha. of the mother a.loy(x=0.00).The EdX study shows tha. there is no impurity conta.ina.ion in the *** permea.ility a.d dielectric mea.urements show a. improved qua.ity fa.tor of the Eu-doped sa.ples with low ma.netic a.d dielectric *** dependent resistivity a.d impeda.ce a.alysis a.so show the improved *** the observed properties of the sa.ples,a.l the investiga.ed ferrites might be strong ca.dida.es for potentia. a.plica.ions in memory devices,ma.netic sensors,a.d high frequency a.plica.ions.

关键词： Ferrites Ra.ee a.ths Coercivity Permea.ility EdX Resistivity

Highly toxic a. begets more a.

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Neura. Regenera.ion Resea.ch 2024年第9期19卷 1871-1872页

作者： merc m.Kemeh Noel d.La.o Gusta. H.Ca.lson School of Chemistry a.d Biochemistry Clark UniversityWorcesterMAUSA

a.zheimer’s disea.e(a.)is the most common form of dementia.the 7th lea.ing ca.se of dea.h *** the tissue level,a. is cha.a.terized by the presence of extra.ellula. a.yloid pla.ues tha. a.e comprised prima.ily of the a.yloid-βpeptide(a.),a.d by intra.eurona. neurofibrilla.y ta.gles composed of *** genetics of ea.ly-onset a. a.d longitudina. bra.n-ima.ing studies of la.e-onset a. indica.e tha. extra.ellula. a.deposition,in genera.,precedes neurofibrilla.y ta.gle forma.ion in neurons(hampel et a..,2021;Young-Pea.se et a..,2023).

关键词： a. ta. a.zheimer dea.h

The multi-impurity system in CdSe na.opla.elets:electronic structure a.d thermodyna.ic properties

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Communica.ions in Theoretica. Physics 2024年第3期76卷 165-173页

作者： d a.Ba.hda.a.ya. V a.Ha.utynya. E m Ka.a.ya. H a.Sa.kisya. Russia.-a.menia. University H Emin 1230051YerevanArmenia Institute of a.plied Problems of Physics 25 Nersisyan St0014YerevanArmenia

This pa.er theoretica.ly studies the impurity sta.es a.d the effects of impurity concentra.ion a.d configura.ion on the optica.,electrica.,a.d sta.istica. properties of CdSe na.opla.elets(NPLs).a. ima.e cha.ge-ba.ed model of electron-impurity intera.tion is *** cha.ge-ca.rier energy spectra.a.d corresponding wa.e functions depending on the impurity number a.d configura.ion a.e *** electron binding energies a.e ca.cula.ed for different NPL *** is shown tha. the ima.e cha.ge-ba.ed intera.tion potentia. tha. a.ises due to the dielectric consta.ts misma.ch is much stronger tha. the intera.tion potentia. tha. does not ta.e such a.misma.ch into ***,it is demonstra.ed tha. the binding energies a.e increa.ing with the number of *** ca.cula.e the ca.onica. pa.tition function using the energy levels of the electron,which in turn is used to obta.n the mea. energy,hea. ca.a.ity,a.d entropy of the non-intera.ting electron *** thermodyna.ic properties of the non-intera.ting electron ga. tha. depend on the geometric pa.a.eters of the NPL,impurity number,configura.ion,a.d tempera.ure a.e studied.

关键词： na.opla.eletes thermodyna.ic properties impurity sta.es

Predictor-corrector Fdm a.alysis of mHd da.cy-Forchheimer flow of a.micropola. fluid with viscous dissipa.ion a.d heterogeneoushomogeneous

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Propulsion a.d Power Resea.ch 2024年第2期13卷 257-272页

作者： d.Thenmozhi m.Eswa.a.Ra. depa.tment of ma.hema.ics Saveetha School of EngineeringSIMATSChennaiTamilnaduIndia

This resea.ch delves into a. intrica.e explora.ion ofﬂuid dyna.ics within hea. tra.sfer systems,with a.speciﬁc focus on enha.cing our understa.ding a.d improving system efﬁ*** a.sophistica.ed ma.hema.ica. model,the study incorpora.es micropola.ﬂuid dyna.ics,micro rota.iona. effects,la.ina.ﬂow cha.a.terized by the da.cy-Forchheimer model,inertia.effects,a.d chemica. rea.tions within a.hea. tra.sfer system fea.uring bounda.y la.er *** ma.hema.ica. fra.ework consists of pa.tia. differentia. equa.ions(PdEs),a.d the study utilizes a.va.ced numerica. techniques,including the(PC4-Fdm)Predictor-Corrector Finite difference method a.d the shooting method,to solve these govern-ing *** inclusion of qua.tized mesh points a.d a.alysis of convergence using 4th orderﬁnite difference methods enha.ces the precision of the obta.ned *** pa.a.-eters a.e scrutinized to dra. mea.ingful *** heterogeneous pa.a.eter revea.s a. increa.ing trend inﬂuid concentra.ion,while the homogeneous pa.a.eter indica.es a.collision effect lea.ing to a.decrea.e inﬂuid *** Eckert number,a.socia.ed with viscous dissipa.ion,exhibits a.correla.ion with decrea.edﬂuid tempera.ure a.d increa.edﬂuid *** rota.ion pa.a.eters suggest a.pa.a.lel increa.e inﬂuid velocity a.d a.ma.gina. decrea.e inﬂuid ***,the da.cy-Forchheimer pa.a.eter,reﬂective of inertia. effects,showca.es a. increa.e inﬂuid tempera.ure a.d decrea.e in velocity in the convection *** the industria. implica.ions,the study underscores the signiﬁca.ce of convection hea. tra.sfer systems in the context of ***ﬁndings offer va.ua.le insights for optimizing hea.ing a.d cooling processes in diverse industria. a.plica.ions,ra.ging from power pla.ts to wa.te hea. recovery units a.d pha.ma.eutica. industries.ª2024 The *** services by Elsevier *** beha.f of Kea. Communica.ions ***.

关键词： Predictor-corrector micropola.ﬂuid ma.netohydrodyna.ics(mHd) Viscous dissipa.ion Homogeneous-heterogeneous

Interfa.ia. engineering through lea. binding using crown ethers in perovskite sola. cells

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Journa. of Energy Chemistry 2024年第5期92卷 263-270页

作者： Sun-Ju Kim YeonJu Kim Ra.esh Kuma. Chituma.la.Ga.oung ham Tha.h-da.h Nguyen Joonkyung Ja.g Hyojung Cha.Jova.a.milić Jun-Ho Yum Kevin Sivula.Ji-Youn Seo depa.tment of Na.o Fusion Technology Pusan National UniversityBusan 46241Republic of Korea La.ora.ory for molecula. Engineering of Optoelectronic Na.oma.eria.s Institute of Chemical Sciences and EngineeringÉcole Polytechnique Fédérale de Lausanne(EPFL)1015 LausanneSwitzerland depa.tment of Energy Convergence a.d Clima.e Cha.ge Kyungpook National UniversityDaegu 41566Republic of Korea depa.tment of Hydrogen a.d Renewa.le Energy Kyungpook National UniversityDaegu 41566Republic of Korea a.olphe merkle Institute University of FribourgCH-1700 FribourgSwitzerland

In the doma.n of perovskite sola. cells(PSCs),the impera.ive to reconcile impressive photovolta.c performa.ce with lea.-rela.ed issue a.d environmenta. sta.ility ha. driven innova.ive *** study pioneers a. a.proa.h tha. not only rectifies lea. lea.a.e but a.so pla.es pa.a.ount importa.ce on the a.ta.nment of rigorous interfa.ia. *** ethers,nota.ly benzo-18-crown-6-ether(B18C6),were stra.egica.ly integra.ed a. the perovskite-hole tra.sport ma.eria. *** ethers exhibit a.dua. role:efficiently sequestering a.d immobilizing Pb^(2+)ions through host-guest complexa.ion a.d simulta.eously esta.lishing a.robust interfa.ia. pa.siva.ion *** crown ether ca.dida.es,guided by density functiona. theory(dFT)ca.cula.ions,demonstra.ed proficiency in binding Pb2+ions a.d optimizing interfa.ia. *** devices incorpora.ing these ma.eria.s a.hieved exceptiona. power conversion efficiency(PCE),nota.ly 21.7%for B18C6,underscoring their effica.y in lea. binding a.d interfa.ia. *** techniques,including time-of-flight seconda.y ion ma.s spectrometry(ToF-SImS),ultra.iolet photoelectron spectroscopy(UPS),time-resolved photoluminescence(TRPL),a.d tra.sient a.sorption spectroscopy(Ta.),unequivoca.ly a.firmed Pb^(2+)ion ca.ture a.d suppression of non-ra.ia.ive ***,these PSCs ma.nta.ned efficiency even a.ter enduring 300 h of exposure to 85%rela.ive *** resea.ch underscores the tra.sforma.ive potentia. of crown ethers,simulta.eously a.dressing lea. binding a.d stringent interfa.ia. pa.siva.ion for susta.na.le PSCs poised to commercia.ize a.d a.va.ce renewa.le energy a.plica.ions.

关键词： Perovskite sola. cells Interfa.ia. pa.siva.ion Crown ether ma.eria.s Sta.ility

modula.ion of oxida.ive da.a.e a.d genotoxicity of biosynthesized zinc oxide na.opa.ticles via.supplementa.ion with modified cinna.a.dehyde-loa.ed chitosa. na.opa.ticles in mice

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Food Science a.d Huma. Wellness 2024年

作者： mosa.d a.a.del-Wa.ha. a.iza.a.El-Nekeety a.ma. S.Sa.ma. Zeina. K.hamza.Engy m.a.l Soher E.aly Wenyi Ka.g depa.tment of Food Toxicology & Conta.ina.ts， Na.iona. Resea.ch Centre Dokki， Cairo， Egypt Genetic a.d Cytology depa.tment， Na.iona. Resea.ch Centre Dokki， Cairo， Egypt depa.tment of Fa.s a.d Oils， Na.iona. Resea.ch Centre Dokki， Cairo， Egypt Na.iona. R & d Center for Edible Fungus Processing Technology， Hena. University Joint Interna.iona. Resea.ch La.ora.ory of Food & medicine Resource Function Functiona. Food Engineering Technology Resea.ch Center Henan

Synthesis of zinc oxide na.opa.ticles (Zn-NPs) via.green method is a. outsta.ding a.terna.ive to conventiona./regula. methods; however， the sa.ety or toxicity of the biosynthesized ZnO-NPs in vivo is not fully explored. This study wa. conducted to eva.ua.e the protective efficiency of cinna.a.dehyde-loa.ed chitosa. na.opa.ticles (Cin@CSNPs) a.a.nst oxida.ive da.a.e a.d genotoxicity of zinc oxide na.opa.ticles (ZnO-NPs) in mice. ZnO-NPs were biosynthesized using the extra.t of fresh lea.es of mentha.pulegium L. Cin wa. extra.ted from cinna.on essentia. oil， a.d wa. loa.ed into chitosa. na.opa.ticle (Cin@CSNPs). Both ZnO-NPs， Cin@CSNPs a.d CSNPs were cha.a.terized. The in vitro relea.e of Cin@CSNPs wa. determined. In the biologica. study， 6 groups of ma.e Ba.b/c mice were trea.ed by ga.a.e for 3 weeks a. follows， control group， the group received ZnO-NPs (25 mg/kg b.w)， the groups received Cin@CSNPs a. low dose (50 mg/kg b.w) or high dose (100 mg/kg b.w)， a.d the groups received ZnO-NPs plus Cin@CSNPs a. the two tested doses. Blood a.d tissue sa.ples were collected for different biochemica.， genetica. a.d histologica. studies. The pa.ticle size of ZnO-NPs， CSNPs， a.d Cin@CSNPs were (20.78 ± 2.6)， (170.0 ± 3.7)， a.d (218.23 ± 2.9) nm， a.d ξ-potentia. were (32.7 ± 4.6)， (8.32 ± 0.27) a.d (4.8 ± 0.21)， respectively. ZnO-NPs disturbed the biochemica. a.d oxida.ive stress indices， a.P， CEa. TNF-α， chromosoma. a.erra.ions in soma.ic a.d germ cells， a.d sperm a.norma.ity a.ong with severe pa.hologica. cha.ges in the hepa.ic， rena.， a.d testicula. tissues. Cin@CSNPs improved significa.tly a.l the pa.a.eters tested a.d the histologica. picture in a.dose-dependent. Therefore， the biosynthesized ZnO-NPs exhibit oxida.ive da.a.e a.d genotoxicity， a.d Cin@CSNPs ha.e potentia. protective effects a.a.nst the risks of ZnO-NPs a.d ma. be a.promising tool to overcome the cha.lenges of using Cin in food a.d pha.ma.eutica.s a.plica.ions.

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