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i.fluence of ceri.m i.ns on structure-dependent mag.eti. properti.s of Ba-Sr M-type hexaferri.e nanocrystals

Journal of Rare Earths 2024年第2期42卷 364-372,I0005页

作者： Ram A.Pawar Suni. M.Patang. P.M.Di.0}e Sher Si.g. Meena Abdullah g.l-Sehemi.Mehboobali.Panni.ara Santosh S.Jadhav Department of Physi.s ArtsCommerce and Science CollegeAhmednagar413711MaharashtraIndia Department of Physi.s Shri Krishna MahavidyalayaGunjotiDistOsmanabad413606MaharashtraIndia Padmashri.Vi.he Pati. Colleg. of Arts Science and CommercePravaranagarA/P.Loni(Kd)Tal.RahataDistAhmednagar413713MaharashtraIndia Soli. State Physi.s Di.i.i.n Bhabha Atomic Research CentreMumbai400085MaharashtraIndia Department of Chemi.try King Khalid UniversityAbha61413Saudi Arabia Department of Physi.s D.S.M's ArtsCommerce and Science CollegeJintur431509MaharashtraIndia

The present study i. a systemati. effort to i.vesti.0}te the structure-sensi.i.e mag.eti. parameters of Ce^(3+) substi.uted Ba-Sr hexaferri.e nanocrystals chemi.ally formulated as Ba_(0.5)Sr_(0.5)Ce_(x)Fe_(12-x)O_(19) where x=0.0-0.2 wi.h Δx=*** hexaferri.e powders were prepared usi.g.the sol-g.l self-i.0}i.i.n route and structurally characteri.ed by means of powder X-ray di.fracti.n and Fouri.r transform i.frared *** creati.n of the M-type hexaferri.e phase wi.hi. the synthesi.ed samples was revealed from the Ri.tveld refi.ement of the X-ray *** occurrence of a secondary phase of CeO_(2) was revealed wi.hi. the hexaferri.es for the substi.uti.n,x> *** refi.ed X-ray di.fracti.n data were uti.i.ed to compute the latti.e parameters,X-ray densi.y,and latti.e parameter *** crystal structure plotted from the refi.ed XRD data reveals the occupancy of the i.ns at di.ferent latti.e *** XPS data of the hexaferri.e were analyzed to confi.m the oxi.ati.n states of the consti.uent *** nanocrystalli.e nature of the hexaferri.es was revealed from the crystalli.e si.es calculated usi.g.Scherer's *** analysi. of FTi. spectra confi.ms that only a fracti.n of Ce^(3+)accommodated i. the latti.e and the remai.i.g.Ce content resi.e i. the form of the CeO_(2) *** morpholog. of the hexaferri.es was analyzed from the FESEM profi.es of the ferri.e *** mag.eti. behavi.r study was performed by analyzi.g.the Curi. temperature,hysteresi. loops,and hyperfi.e i.teracti.ns by means of suscepti.i.i.y,V.S.M,and Mossbauer spectroscopy,*** hexaferri.es wi.h i.creasi.g.coerci.i.y,decreasi.g.saturati.n mag.eti.ati.n,and decreasi.g.Curi. temperature are reported i. the *** substi.uted Ce^(3+)i.ns i.hi.i. the g.ai. g.owth and create latti.e i.perfecti.ns g.vi.g.ri.e to hexaferri.es wi.h tuned mag.eti. parameters sui.able for di.ferent appli.ati.ns.

关键词： Ba-Sr hexaferri.e Ce^(3+)substi.uti.n XPS Saturati.n mag.eti.ati.n Coerci.i.y M?ssbauer spectroscopy

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Harmoni.s i. the Squi.rel Cag. i.ducti.n Motor Analyti. Calculati.n-Part Ⅰ: Di.ferenti.l Leakag., Attenuati.n, Asynchronous Parasi.i. Torques

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中国电工技术学会电机与系统学报(英文) 2023年第4期7卷 320-329页

作者： g.Kovács g.nz Electri. Works 1095 BudapestHungary

The mag.eti. fi.ld g.nerated i. the ai. g.p of the cag. asynchronous machi.e and the harmoni.s of the mag.etomoti.e forces creati.g.that mag.eti. fi.ld, as well as the related di.ferenti.l leakag., attenuati.n, asynchronous parasi.i. torques have been di.cussed i. g.eat detai. i. the li.erature, but always separately, for a long.ti.e. However, systemati.ati.n of the phenomenon sti.l awai.s. Therefore, i. i. worth summari.i.g.the completeness of the phenomena i. a si.g.e study – wi.h a new approach at the same ti.e-i. order to reveal the relati.nshi.s between them. The role of rotor slot number i. emphasi.ed much more than before. An exi.ti.g. commonly used, but sti.l i.practi.al basi. fi.0}re has been modi.i.d to more clearly demonstrate the response of the rotor for the harmoni.s of the stator. The need to treat di.ferenti.l leakag., asynchronous parasi.i. torques and attenuati.n tog.ther wi.l be demonstrated: new formula for asynchronous parasi.i. torque i. deri.ed;the long.used characteri.ti. curves for di.ferenti.l leakag. and attenuati.n used separately so far was merg.d i.to one, correct curve i. order to provi.e a correct desi.0} g.i.e for the eng.neers.

关键词： Asynchronous parasi.i. torque Attenuati.n Di.ferenti.l leakag. Squi.rel cag. i.ducti.n motor Wi.di.g.harmoni.s

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Uncertai.ty of Cli.ate Response to Natural and Anthropog.ni. Forci.g. Due to Di.ferent Land Use Scenari.s

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Advances i. Atmospheri. Sci.nces 2011年第5期28卷 1215-1232页

作者： Alexey V.ELi.EEV i.0}r i.MOKHOV A. M. Obukhov i.sti.ute of Atmospheri. Physi.s Russian Academy of Sciences3 Pyzhevsky 119017 Moscow Russia

The *** i.sti.ute of Atmospheri. Physi.s,Russi.n Academy of Sci.nces （i.P RAS） cli.ate model （CM） of i.termedi.te complexi.y i. extended by a spati.lly expli.i. terrestri.l carbon cycle *** experi.ents wi.h the i.P RAS CM are performed forced by the reconstructi.ns of anthropog.ni. and natural forci.g. for the 16th to the 20th centuri.s and by combi.ed SRES （Speci.l Report on Emi.si.n Scenari.s） A2-LUH （Land Use Harmoni.ati.n） anthropog.ni. scenari.s for the 21st ***,the i.pact of uncertai.ty i. land-use scenari.s on results of si.ulati.ns wi.h a coupled cli.ate-carbon cycle model i. *** si.ulati.ns of the model reali.ti.ally reproduced hi.tori.al chang.s i. carbon cycle *** the i.P RAS CM,cli.ate warmi.g.reproduced i. the 20th and 21st centuri.s enhanced terrestri.l net pri.ary producti.n but terrestri.l carbon uptake was suppressed due to an overcompensati.g.i.crease i. soi. *** year 2100,the si.ulati.ns the model forced by di.ferent land use scenari.s di.erg.d markedly,by about 70 Pg.（C） i. terms of bi.mass and soi. carbon stock but they di.fered only by about 10 ppmv i. terms of atmospheri. carbon di.xi.e content.

关键词： terrestri.l carbon cycle cli.ate model anthropog.ni. scenari.s uncertai.ty i. projecti.ns

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Analysi. of parti.ulate behavi.r i. porous medi.

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Appli.d Mathemati.s and Mechani.s(Eng.i.h Edi.i.n) 2008年第4期29卷 511-516页

作者： Hani.i.Si.yam M.H.Hamdan Department of Mathemati.s and Physi.s College of Arts and SciencesQatar UniversityP.O.Box 2713DohaQatar Department of Mathemati.al Sci.nces University of New BrunswickP.O.Box 5050Saint JohnNew BrunswickCanada

i. thi. work, we analyze the behavi.r of the parti.le phase i. the flow of a parti.le-laden mi.ture throug. a porous medi.m. An attempt i. made to model the di.fusi.n and di.persi.n processes, and to quanti.y the devi...

关键词： porous medi. dusty g.ses parti.le behavi.r

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Proton-neutron symplecti. model descri.ti.n of ^(20)Ne

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Chi.ese Physi.s C 2022年第4期46卷 141-149页

作者： H.g.g.nev Joi.t i.sti.ute for Nuclear Research DubnaRussia

A mi.roscopi. descri.ti.n of the low-lyi.g.posi.i.e-pari.y rotati.nal bands i. ^(20)Ne i. g.ven wi.hi. the framework of the symplecti.-based proton-neutron shell-model approach provi.ed by the proton-neutron symplecti. model(PNSM).For thi. purpose,a model Hami.toni.n i. *** i.cludes an alg.brai. i.teracti.n lyi.g.i. the envelopi.g.alg.bra of the Sp(12,R)dynami.al g.oup of the PNSM,whi.h i.troduces both hori.ontal and verti.al mi.i.g. of di.ferent SU(3)i.reduci.le representati.ns wi.hi. the Sp(12,R)i.reduci.le collecti.e space of ^(20)Ne.A g.od overall descri.ti.n i. obtai.ed for the exci.ati.n energ.es of the g.ound and fi.st two exci.ed β bands,i.cludi.g.the g.ound state i.traband B(E2)quadrupole collecti.i.y and the known i.terband B(E2)transi.i.n probabi.i.i.s between the low-lyi.g.collecti.e states,wi.hout uti.i.i.g.an effecti.e charg..

关键词： proton-neutron symplecti. model shell-model states collecti.e states i.^(20)Ne

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Esti.ati.g.costs of salvag. log.i.g.for larg.-scale burned forest lands: A case study on Turkey's Medi.erranean coast

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Journal of Forestry Research 2021年第5期32卷 1899-1909页

作者： Neşe g.lci Faculty of Forestry Kahramanmaras Sutcu Imam University46100 KahramanmarasTurkey

Di.ferent forest fi.es causi.g.di.ferent deg.ees of effects occur i. fi.e-sensi.i.e forests due to vari.us reasons such as cli.ate *** as well as harmful aspects of forest fi.es are a multi.di.ci.li.ary research *** i.formati.n systems(g.S)and remote sensi.g.RS)methods offer a number of benefi.s for researchers and operators i. the fi.ld of forest fi.e *** present study analyses ti.ber pri.i.g.based on forest contractor demands of post-salvag. log.i.g.*** effect of ti.ber obtai.ed from compartment uni.s on producers’pri.i.g.poli.y was *** forest fi.e area(2500 ha)located i. Antalya i. Turkey was selected as the mai. study *** parameters(aspect,slope and slope posi.i.n),stand types(di.meter class and crown closure),and burn severi.y were analyzed tog.ther usi.g.g.S and R software packag.s.A multi.li.ear reg.essi.n model(R^(2)=0.752)demonstrated that factors that had the most i.pact on pri.i.g.were slope posi.i.n,aspect,stand ag.,crown closure and burn *** model can be used to esti.ate salvag. log.i.g.pri.es i. Calabri.n pi.e(Pi.us bruti. Ten.)stands wi.h si.i.ar *** admi.i.trators and contractors may readi.y address the uni. pri.e of ti.ber by esti.ati.g.approxi.ate costs i. a g.ven forest area for whi.h they are g.i.g.to *** wi.l help reduce operati.nal planni.g.ti.es of harvesti.g.procedures i. burned stands.

关键词： Ti.ber extracti.n Forest fi.es Stumpag. sale Cost esti.ati.n Sustai.abi.i.y Crown fi.e

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Corrosi.n of Alloy Steel i. 30% Ethylene g.ycol Soluti.n and CrO_4^(2-) Under Hydrodynami. Condi.i.n

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Journal of i.on and Steel Research i.ternati.nal 2013年第6期20卷 82-87页

作者： M Ni.nejad Khomami.i.Danaee A A Attar M Peykari Abadan Faculty of Petroleum Eng.neeri.g Petroleum University of Technology619-63187-14331Abadan Iran

The electrochemi.al behavi.r of steel alloy i. 30%ethylene g.ycol-water soluti.n at di.ferent soluti.n rotati.g.speeds was i.vesti.0}ted by polari.ati.n curves and AC i.pedance *** results obtai.ed showed that corrosi.n rate di. not chang. si.0}i.i.antly at di.ferent rotati.g.*** effect of chromate as the i.hi.i.or was studi.d and hi.0} i.hi.i.i.n effi.i.ncy was *** was found that surface passi.ati.n occurred i. the presence of the *** i.hi.i.i.g.effect of the chromate was explai.ed on the basi. of the competi.i.e adsorpti.n between the i.org.ni. ani.ns and the ag.ressi.e Cl-and the adsorpti.n i.otherm basi.ally obeys the Lang.ui. adsorpti.n *** parameters for i.hi.i.or adsorpti.n were determi.ed and results reveal that the adsorpti.n process i. spontaneous.

关键词： hydrodynami. ethylene g.ycol corrosi.n adsorpti.n chromate

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i.hnofabri. analysi. of bathyal chalks:the Mi.cene i.g.i. Formati.n of the Andaman and Ni.obar i.lands,i.di.

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Journal of Palaeog.og.aphy 2021年第4期10卷 494-508页

作者： Bhawani.i.g. g.Desai School of Petroleum Technolog. Pandit Deendayal Energy UniversityGandhinagarGujaratIndia

i. the Bay of Beng.l,the Andaman and Ni.obar i.lands represent part of the Burma-Sunda-Java subducti.n *** i.lands are composed of sedi.ents rang.ng.i. ag. from Jurassi. to Recent,represented by ophi.li.es,flysch sedi.ents,along.wi.h deep mari.e sedi.ents scraped off from the subducti.g.*** strati.0}aphi. successi.n that overli.s meta-sedi.entary and ophi.li.e sui.es consi.ts of turbi.i.e and non-turbi.i.e sequences,along.wi.h thi.k-bedded nannofossi. *** present study descri.es i.hnofabri.s of chalks from the i.g.i. Formati.n(Early to Mi.dle Mi.cene).These chalks are hi.0}ly to moderately bi.turbated and compri.e several levels of ferrug.ni.ed layers as weak di.conti.ui.y *** studi.d secti.n shows the recurri.g.occurrence of i.hnotaxa belong.ng.to Asterosoma,Chondri.es,Cladi.hnus,Ophi.morpha,Palaeophycus,Planoli.es,Taeni.i.m,Thalassi.oi.es,and *** are represented by Bi.turbati.n i.di.es varyi.g.between Bi.2 to Bi.5,represented by(a)li.0}t coloured trace fossi.s i. dark sedi.ent(Li. i.hnofabri.)and(b)dark coloured trace fossi.s i. li.0}t sedi.ent(Di. i.hnofabri.).i.hnofabri. analysi. sug.ests multi.le coloni.ati.n,complex ti.ri.g.and multi.ayer *** Li. i.hnofabri. exposed at Kalapathar reveals three ti.rs,a di.erse shallow ti.r and a moderately low di.erse mi.dle and deep *** the Lacam Poi.t Secti.n,i. contrast,the Li. i.hnofabri. i. represented by condensati.n of the ti.rs and the absence of shallow *** Di. i.hnofabri. at the Kalapathar Secti.n seems to be more expanded and i. represented by four ti.rs wi.h extensi.e *** analysi. supports deposi.i.n of the chalk sedi.ents i. a lower bathyal paleoenvi.onment and sug.ests that org.ni. matter,pore water,and bottom-water oxyg.nati.n were the mai. controlli.g.***,the i.hnofabri. analysi. of the EarlyMi.dle Mi.cene i.g.i. Formati.n g.ves fi.st-hand i.formati.n reg.rdi.g.the poorly known chalk faci.s of the Andaman and Ni.obar i.lan

关键词： i.hnofabri. Nannofossi. ooze Chalk Bathyal Bay of Beng.l Mi.cene

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Revi.w of research and appli.ati.n of evaporati.e cooli.g.i. preservati.n of fresh ag.i.ultural produce

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i.ternati.nal Journal of Ag.i.ultural and Bi.log.cal Eng.neeri.g 2014年第5期7卷 85-102页

作者： M.C.Ndukwu S.i.Manuwa Department of Ag.i.ultural and Bi.-resources Eng.neeri.g Michael Okpara University of AgricultureUmudike Umuahia Abia StateNigeria Department of Ag.i.ultural Eng.neeri.g Federal University of Technology AkureP.M.B.704 AkureOndo StateNigeria

Extensi.e revi.w of evaporati.e coolers for the preservati.n of fresh ag.i.ultural produce i. some countri.s was *** of the desi.0}s employ mai.ly di.ect evaporati.e cooli.g.methods whi.h are si.ple but wi.h lower thermal performance,and can only be used for short term storag. of ag.i.ultural produce wi.h moderate respi.atory *** i.to novel technolog.es i. evaporati.e cooli.g.systems whi.h can i.prove the cooli.g.performances,such as membrane ai. treatments,dew poi.t type and heat pi.e type heat exchang.r i. i.di.ect/di.ect evaporati.e cooli.g.appli.ati.n,and thei. feasi.i.i.i.s i. ag.i.ultural storag. are ei.her absent or *** ki.ds of materi.ls especi.lly ag.i.ultural resi.ues have been used for ai. water contact i. evaporati.e cooli.g.i. di.ferent cli.ates,but most of the analyses focused on effect of ai. flow rate and pad thi.kness on the cooli.g.effecti.eness,and the energ. effi.i.ncy and evaporati.n loss of these materi.ls i. most cases were not evaluated or *** paper hi.0}li.0}ts the prospects and constrai.ts of commerci.li.ati.n and marketi.g.of evaporati.e coolers i. some developi.g.countri.s,and the g.neral weakness i. researches and the ways forward i. new area of research and development are concluded.

关键词： ag.i.ultural products evaporati.e cooli.g passi.e coolers acti.e coolers pad materi.ls

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i.fluence Researches of Fused Calci.m Hexalumi.ate Amount on Metal Corrosi.n Resi.tance of Alumi.a Refractori.s

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Chi.a's Refractori.s 2016年第1期25卷 1-6页

作者： Vladi.i. V. PRi.ACHENKO Valeri. V. MARTYNENKO i.i.a g. SHULi. Lyudmi.a N. ZOLOTUKHi.A Andrey B. KOVALYOV PJSC "The Ukrai.i.n Research i.sti.ute of Refractori.s named after A.S. Berezhnoy" Kharki. 61024 Ukraine

Calci.m hexalumi.ate i. one from such perspecti.e materi.ls. i. i. characteri.ed by hi.0} refractori.ess （ above 1 830 ~C ） , as well as properti.s stabi.i.y i. reduci.g.atmosphere, hi.0} alkali. and slag.resi.tance, low thermal conducti.i.y and wettabi.i.y by molten metals. i. thi. work i.fluence researches of fused calci.m hexalumi.ate materi.l addi.i.e i. amount of 5%, 15% amt 25% on the mai. properti.s of alumi.a refractori.s were carri.d out. i. i. establi.hed that, the refractori.s contai.i.g.the addi.i.e of 25% calci.m hexalumi.ate materi.l are characteri.ed by the hi.0}est properti.s, sli.0}tly i.preg.ated wi.h metal melt and the hi.0}est metal corrosi.n resi.tance. The alumi.a purg.ng.plug. fi.r blowi.g.of metal wi.h calci.m hexalumi.ate materi.l addi.i.e are produced and i.tended to one metallurg.cal plant of Ukrai.e for carryi.g.out tests.

关键词： calci.m hexalumi.ate alumi.a refracto-ri.s metal resi.tance purg.ng.plug.

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