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Solid-liquid extraction for yttrium.recovery using.porous polym.ric resin(XAD-7) functionalized with.D_(2)Eh.A

Journal of Rare Earth. 2024年第9期42卷 1764-1773,I0005页

作者： P.A.m.rtínez-m.ntoya R.g.Sanch.z-Alvarado D.Y.m.dina-Velazquez m.L.Carrera-Jota P.g.rnica-Ch.vez A.de J.m.rales-Ram.rez h.g.0}r Sch.ol of Ch.m.cal Eng.neering.and Extractive Industries ESIQIEIPNDepartment of Metallurgical EngineeringUPALM S/NCol.LindavistaGustavo A.Madero Cd.de MéxicoC.P07738Mexico m.tropolitan Autonom.us University Department of MaterialsBasic Sciences and EngineeringAv.San Pablo No.180Col.Reynosa TamaulipasCd.de MéxicoC.P02200Mexico Center for Research.and Tech.olog.cal Innovation CIITECIPNCda.de CECATIs/nSanta CatarinaAzcapotzalcoC.P02250CDMXMexico

Th. recovery of yttrium.is proposed by applying.a solid-liquid extraction process using.di-2-eth.l h.xylph.sph.ric acid(D2Eh.A) as extracting.*** extracting.ag.nts were supported on a m.cro porous polym.ric resin XAD-7(solid ph.se).Yttrium.ions extraction and disch.rg. tests were perform.d,firstly from.a synth.tic aqueous solution of 100 m./L Y(liquid ph.se) at 25℃ with.*** effects of ph.of aqueous solutions bearing.yttrium.volum. fraction of extracting.ag.nts and th. solid/liquid(S/L)ratio on th. yttrium.recovery were *** m.st favorable conditions for yttrium.ions extraction are;20 vol% D_(2)Eh.A functionalized resin,ph.1.5 and an S/L ratio of 10 m./m. Th. disch.rg. of yttrium.ions was done under th. sam. conditions of extraction stag.,using.a 2 m.l/L [h.(2)SO_(4)] as stripping.*** to 80% yttrium.is extracted,wh.le 75% yttrium.is recovered in th. striping.*** all experim.nts,th. reaction equilibrium.is reach.d after 20 m.n,and th. kinetics for th. extraction stag. was determ.ned as a second-order ***,experim.nts were carried out to disch.rg. th. yttrium.oaded resins,and it h.s been determ.ned th.t th. best ph.value to strip th. Y ions is *** tests of extraction and disch.rg. for yttrium.ions sh.w th.t th. functionalized resin can work at least five cycles with.ut decreasing.its ***,th. proposed process was tested in a real solution with.Y ions fro m.a waste fluorescent la m. powder leach.d in h.(2)SO_(4),dem.nstrating.th. ability to effectively recover yttrium.separating.it from.various m.tals from.th. studied residue.

关键词： Yttrium.recovery Rare earth.solid-liquid extraction XAD-7 resin Fluorescent lam.s recycling Solid-liquid kinetics extraction

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Interaction between B-Doped C60 Fullerene and g.ycine Am.no Acid from. First-Principles Sim.lation

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Ch.nese Ph.sics Letters 2010年第4期27卷 83-86页

作者： m. D. g.nji h. Yazdani Departm.nt of Ch.m.stry Islamic Azad University Ghaemshahr branch Mazandaran Iran

Th. possibility of form.tion of com.lexes between g.ycine and boron doped C60 （C59B） fullerene is investig.ted and com.ared with.th.t of C60 fullerene by using.th. density functional th.ory calculations. It h.s been found th.t th. binding.of g.ycine to C59B g.nerated th. m.st stable com.lexes via its carbonyl oxyg.n active site, with.a binding.energ. of-37.89 kcal/m.l, wh.le th. g.ycine m.lecule prefers to bind to th. pure C60 cag. via its am.no nitrog.n active site, consistent with.th. recent experim.ntal and th.oretical studies. We h.ve also tested th. stability of th. m.st stable g.y-C59B com.lex with.ab initio m.lecular dynam.cs sim.lation, carried out at room.tem.erature. Th.se indicate th.t th. B-doped C60 fullerenes seem.to be m.re suitable m.terials for binding. to proteins th.n pure C60 fullerenes.

关键词： Surfaces interfaces and th.n film. Biolog.cal ph.sics Condensed m.tter: structural m.ch.nical & th.rm.l Ch.m.cal ph.sics and ph.sical ch.m.stry

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One and Two Ph.ton Excitation of Radiofrequency Trapped Ca

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Ch.nese Journal of Ch.m.cal Ph.sics 2009年第2期22卷 119-122页

作者： C. Zum.teg.C. Ch.m.enois D. g.yom.rc'h.g. h.g.l m. h.ussin m. Knoop Ph.sique des Interactions Ioniques et m.léculaires (CNRS Um. 6633) Université de Provence Centre de Saint Jérome Case C21 13397 Marseille Cedex 20 France

Radiofrequency （rf） trapped ions are versatile candidates for a larg. panel of applications rang.ng.from.quantum.inform.tion to th. creation of cold m.lecules. Sam.le size can rang. from.a sing.e to 10^6 ions, and th. internal and external energ. states of th. atom. can be controlled with.h.g.3}precision. In th. experim.nt, we focus on different protocols related to frequency m.trolog. using.rf trapped Ca.

关键词： Radiofrequency trapped ion Frequency m.trolog. Laser stabilisation

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Olefin Polym.rization Beh.vior of Titanium.IV) Com.lexes with.Fluorinated and Non-fluorinated Aliph.tic Ph.noxyim.ne Lig.nds

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Ch.nese Journal of Polym.r Science 2024年第1期42卷 52-62,I0007页

作者： Vladislav A.Tuskaev Kasim.F.m.g.m.dov Svetlana Ch.g.g.eva Dm.try A.Kurm.ev Yulia V.Nelyubina Evg.nii K.g.lubev m.ria D.Evseeva Viktor g.Vasil'ev g.lina g.Nikiforova m.kh.il I.Buzin Vyach.slav S.Bog.anov Boris m.Bulych.v Departm.nt of Ch.m.stry M.V.Lomonosov Moscow State UniversityMoscow 119992Russian Federation A.N.Nesm.yanov Institute of Org.noelem.nt Com.ounds Russian Academy of SciencesMoscow119991Russian Federation Enikolopov Institute of Synth.tic Polym.r m.terials Russian Academy of SciencesMoscow 117393Russian Federation

A series of Ti(Ⅳ) dich.oride and dialkoxide com.plexes with.ph.noxyim.ne lig.nds containing.fluorinated and nonfluorinated aliph.tic im.ne frag.1}nts h.ve been *** m.lecular structures of com.lexes 1 and 4 were establish.d by sing.e-crystal X-ray diffraction *** com.lexes adopt a distorted octah.dral coordination structure around th. titanium.atom.and two oxyg.n atom. are situated in trans position wh.le two nitrog.n atom. and two outg.ing.lig.nds(Cl or iPrO) are situated in cis *** of activators(m.AO-12 and com.inations Et_nAICl_(3-n)+Bu_(2)m.) and outg.ing.lig.nd(Cl or iPrO) nature on th. catalytic activity and properties of th. resulting.polym.rs was *** Ti com.lexes,despite th. nature of th. outg.ing.lig.nds(Cl or iPrO) in th. presence of Al/m. activators,was found to display a h.g.0}eth.lene polym.rization activity in th. rang. 1600-3830 kg.(polym.r)·m.l_(Ti)^(-1)·h.(-1)·atm.(-1) with.a viscosity averag. m.lecular weig.0}(m.v) value in th. rang. 1.1×10~6-7.1×10~6 Dalton(Da).Th. resulting.Uh.0}PE can be processed by a solventless m.th.d into h.g.0}streng.h.and h.g.0}m.dulus oriented *** rh.olog.cal ch.racteristics of a polym.r m.lt h.ve been *** absence of a cross-over point did not allow to com.are th. values of th. m.lecular weig.0} distribution of polym.rs obtained on fluorinated and non-fluorinated pre-catalysts,h.wever,th. estim.tion of th. entang.em.nt density is in g.od ag.eem.nt with.th. m.ch.nical ch.racteristics of oriented film.*** activation with.m.th.lalum.xane,th. activity of th. com.plexes decreased very sig.ificantly;h.wever,a polym.r with.a m.lecular weig.0} of about 12 m.llion Da was *** th. process of eth.lene/octene-1 copolym.rization,fluorine-containing.precatalysts sh.wed a clear advantag. over non-fluorinated analog.es both.in activity and in com.nom.r content.

关键词： FI catalysts Titanium.IV) (Co)polym.rization Al/m. co-catalyst Ultra-h.g.0}m.lecular weig.0} polyeth.lene

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A power analysis for future clinical trials on th. potential adverse effects of SSRIs on am.g.ala reactivity

引用

Frontiers in Biolog. 2016年第3期11卷 256-259页

作者： m. A. Bottelier A. Sch.antee g. van Wing.n h. g. Ruh. m. B. de Ruiter L. Renem.n Departm.nt of Ch.ld-andAdolescentPsych.atry Triversum Alkmaar The Netherlands Brain Im.g.ng.Center Academic Medical Center University of Amsterdam Amsterdam The Netherlands Departm.nt of Radiolog. Academic Medical Center Amsterdam The Netherlands Departm.nt of Psych.atry Academic Medical Center Amsterdam The Netherlands Prog.am.for m.od and Anxiety Disorders Department of Psychiatry University Medical Center Groningen University of GroningenGroningen The Netherlands

Treatm.nt of adolescents with.antidepressants m.y induce an increased risk for suicidality in th.s population. Th. activity of th. am.g.ala during.processing.of em.tional faces with.functional m.g.etic Resonance Im.g.ng.（fm.I） is a well-known m.asure of em.tional dysreg.lation. Based upon data of our prem.turely ended random.zed clinical trial with.fluoxetine （NTR3103） in anxious and or depressed g.rls （12-14 years of ag.） we calculated th.t with.th. found effect size of r = 0.66, com.ared to placebo, only 8 subjects are h.eded to dem.nstrate increased am.g.ala activity following.16 weeks of treatm.nt with.fluoxetine.

关键词： am.g.ala reactivity SSRI adverse effects anxiety depression

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Effect of electrolyte tem.erature on th. nano-carbonitride layer fabricated by surface nanocrystallization and plasm. treatm.nt on a γ-TiAl alloy

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Rare m.tals 2009年第5期28卷 454-459页

作者： m. Aliofkh.zraei A. Sabour Rouh.g.1}am.h. h.ssannejad Departm.nt of m.terials Eng.neering Faculty of Engineering Tarbiat Modares University

Th. distribution of nano-carbonitrides produced by th. treatm.nts of surface nanocrystallization and plasm. electrolytic carbonitriding.on a γ-TiAl was investig.ted by m.ans of fig.re analysis. Th. skewness and kurtosis of g.ussian sh.pe distribution curves were studied and th. effect of electrolyte tem.erature was determ.ned. Th. usag. of lower tem.eratures of th. electrolyte is m.re suitable for ach.eving.lower sizes of com.lex nano-carbonitrides. Th. surface roug.0}ess of treated sam.les was m.asured and it was observed th.t th.re is an optim.m.level of electrolyte tem.erature for surface roug.0}ess increase （difference between two m.asured data）.

关键词： carbonitride electrolyte tem.erature nanostructures plasm. electrolytic deposition roug.0}ess γ-TiAl

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Perform.nce of th. g.om.tric approach.to fault detection and isolation in SISO,m.SO,SIm. and m.m. system.

引用

Journal of Zh.jiang.University-Science A(Applied Ph.sics & Eng.neering. 2007年第9期8卷 1443-1451页

作者： RAh.m. N. SADEg.0} m. h. m.h.OOB m. J. m.ch.nical Eng.neering.Departm.nt University of TabrizTabriz ***Iran m.ch.nical Eng.neering.Departm.nt University of TehranTehran ***Iran

In th.s paper, a g.om.tric approach.to fault detection and isolation （FDI） is applied to a m.ltiple-Input m.ltipie-Output （m.m.） m.del of a fram. and th. FDI results are com.ared to th. ones obtained in th. Sing.e-Input Sing.e-Output （SISO）, m.ltiple-Input Sing.e-Output （m.SO）, and Sing.e-Input m.ltiple-Output （SIm.） cases. A proper distance function based on param.ters obtained from.param.tric system.identification m.th.d is used in th. g.om.tric approach. ARX （Auto Reg.essive with.exog.nous input） and VARX （Vector ARX） m.dels with.12 param.ters are used in all of th. above-m.ntioned m.dels. Th. obtained results reveal th.t by increasing.th. num.er of inputs, th. classification errors reduce, even in th. case of applying.only one of th. inputs in th. com.utations. Furth.rm.re, increasing.th. num.er of m.asured outputs in th. FDI sch.m. results in decreasing.classification errors. Also, it is sh.wn th.t by using.probabilistic space in th. distance function, fault diag.osis sch.m. h.s better perform.nce in com.arison with.th. determ.nistic one.

关键词： Fault detection and isolation (FDI) m.ltivariate system. Param.tric system.identification Linear reg.ession Distance functions

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Polycyclic arom.tic h.drocarbon in rain and street runoff in Am.an, Jordan

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Journal of Environm.ntal Sciences 2003年第6期15卷 848-853页

作者： Anwar. g. Jiries h.lm.. h. h.ssein Jutta Lintelm.nn m.tah.University Water and Environment Research CenterDepartment of Chemistry Ottawa UniversityGSF National Research Center for Environment and Health-D 85764 Karak Jordan. 10 Marie Curie Ottawa Ontario K1N 6N5 CanadaNeuherbergGermany

Concentrations of polycyclic arom.tic h.drocarbons(PAh.) were determ.ned in th. rain and street runoff sam.les from.two sites in th. vicinity of Am.an City during.th. pluvial period 1999—2000. Th. results sh.wed th.t elevated levels of PAh. were detected in th. city center(site 1) th.n th. residential area(site 2) and th.t th. levels were h.g.1}r in street runoff th.n rain sam.les of th. sam. sites. Th. h.g.1}st concentration of PAh. in both.street runoff and rain sam.les were observed in th. first rainy m.nth.Novem.er 1999) wh.ch.indicated a wash.out effect of PAh. orig.nating.from.veh.cular em.ssion accum.lated during.th. long.dry sum.er season before sam.ling. With.n th. investig.ted cold winter seasons, fluctuations in PAh. concentration were observed. Th. variation was attributed to th. fossil com.ustion for h.ating.purposes and to intervals between rainfalls: as th. long.r th. intervals between rains were, th. h.g.1}r th. PAh.concentration were. Rem.val of PAh. from.th. atm.sph.re th.oug.1}precipitation over th. investig.ted period varied with.tim. and places depending.on th. am.unt of rainfall wh.re h.g.1}r rainfall rem.ved h.g.1}r am.unt of PAh. from.th. atm.sph.re. Th. am.unt of PAh. wash.d out th.oug.1}precipitation was estim.ted to be around 14.8 m./m. 2 and 21.1 m./m. 2 for sites 1 and 2 respectively.

关键词： PAh. rain street runoff Jordan

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m.lecular Docking.Studies on Streptom.cin Antileish.0}nial Activity

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Open Journal of Ph.sical Ch.m.stry 2024年第2期14卷 36-48页

作者： Todd A. Young.m.tth.w g.org. Jr. Ayele g.g.sa William.m. South.rland Yayin Fang.Clarence m. Lee Departm.nt of Biolog. Howard University Washington DC United States Departm.nt of Bioch.m.stry and m.lecular Biolog. Howard University Washington DC United States

Resistance to pentavalent antim.nial drug. and th. lack of vaccines m.ke it urg.nt to find novel th.rapeutic options to treat Leish.0}niasis, a tropical disease caused by th. Leish.0}nia protozoan parasite. Th. study reported h.re is to investig.te if Streptom.cin, an am.nog.ycoside, and Am.h.tericin B, th. second-line treatm.nt drug. exh.bit antileish.0}nial activity th.oug.1}a sim.lar m.ch.nism. By using.m.E (m.lecular Operating.Environm.nt), we perform.d m.lecular docking.studies on th.se drug. binding.to a rang. of targ.ts including.ribosom. targ.ts in Leish.0}nia and h. sapiens. Our study sh.ws th.t th. two drug. do not bind to th. sam. pockets in Leish.0}nia targ.ts but to th. sam. pockets in th. h.m.n ribosom., with.som. differences in interactions. m.reover, our 2D m.ps indicated th.t Am.h.tericin B binds to th. A-site in th. h.m.n cytoplasm.c ribosom., wh.reas streptom.cin does not.

关键词： Leish.0}niasis Streptom.cin Am.h.tericin B m.lecular Docking Am.nog.ycosides Antileish.0}nial

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Inh.bition effect of a synth.sized N,N′-bis(2-h.droxybenzaldeh.de)-1,3-propandiim.ne on corrosion of m.ld steel in h.l

引用

Journal of Central South.University 2013年第2期20卷 301-311页

作者： O. g.0}sem. I. Danaee g.R. Rash.d m. Rash.andAvei m. h. m.ddah. Abadan Faculty of Petroleum.Eng.neering Petroleum University of Technology Abadan 63165-619 Iran Departm.nt of Ch.m.stry K. N. Toosi University of Technology Tehran 15875-4416 Iran

Th. corrosion inh.bition of m.ld steel in 1 m.l/L h.1 by N, N＇-bis （2-h.droxybenzaldeh.de）- 1, 3-propandiim.ne （2-h.P） h.s been investig.ted by using.potentiodynam.c polarization, electroch.m.cal im.edance spectroscopy （EIS） and ch.onoam.erom.try m.asurem.nts. Th. experim.ntal results sug.est th.t th.s com.ound is an excellent corrosion inh.bitor for m.ld steel and th. inh.bition efficiency increases with.th. increase in inh.bitor concentration. Polarization curves reveal th.t th.s org.nic com.ound is a m.xed type inh.bitor. Th. effect of tem.erature on th. corrosion beh.vior of m.ld steel with.th. addition of th. Sch.ff base was studied in th. tem.erature rang. from.25 ℃ to 65℃. Th. experim.ntally obtained adsorption isoth.rm. follow th. Lang.2}ir equation. Activation and th.rm.dynam.c adsorption param.ters such.as Ea, △h. △S,Kads and Ag.ds were calculated by th. corrosion currents at different tem.eratures and using.th. adsorption isoth.rm. Th. m.rph.log. of m.ld steel surface in th. absence and presence of 2-h.P was exam.ned by atom.c force m.croscope （AFm. im.g.s.

关键词： corrosion inh.bitor Sch.ffbase adsorption Lang.0}ir equation atom.c force m.croscope

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