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Effects of Magn.t Size an. Geometry on.Magn.tic Levitation.Force

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Ch.n.se Ph.sics Letters 2007年第9期24卷 2664-2666页

作者： M. K. Alqadi h. M. Al-kh.teeb F. Y. Alzoubi n. Y. Ayoub Departmen. of Ph.sics Jordan University of Science and Technology Irbid Jordan Sch.ol of n.tural Applied Scien.es German Jordanian University Amman Jordan

We obtain.an.lytical relation. for th. levitation.force as a fun.tion.of dimen.ion. of th. supercon.uctor-magn.t system. Th. force h.s been.calculated on.th. basis of th. dipole-dipole in.eraction.model. Th. effect of th.ckn.ss of th. supercon.uctor on.th. levitation.force is in.estigated. Th. results sh.w th.t th. in.luen.e of geometry an. th.ckn.ss of th. magn.t becomes sign.fican.ly large at small levitation.distan.es. Furth.rmore, approximatin. th. perman.n. magn.t as a poin. dipole results in.an.in.ccurate estimation.of th. levitation.force.

关键词： MEISSn.R STATE

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共同富裕:涓滴效应在中国的再检验

经济学动态 2024年第4期 12-32页

作者：郑新业肖寒韩奕中国人民大学应用经济学院 100872 中国社会科学院数量经济与技术经济研究所 100732

新近研究发现,多数国家经济增长的成果并不能通过市场机制从高收入群体惠及低收入群体,即“涓滴效应”并不显著。中国是否存在“涓滴效应”,以实现“先富带动后富”?本文使用2012—2018年的微观数据研究发现:高收入者人均实际可支配收... 详细信息

新近研究发现,多数国家经济增长的成果并不能通过市场机制从高收入群体惠及低收入群体,即“涓滴效应”并不显著。中国是否存在“涓滴效应”,以实现“先富带动后富”?本文使用2012—2018年的微观数据研究发现:高收入者人均实际可支配收入的增加显著降低了农村低收入群体的贫困概率,表明中国存在显著的“先富带动后富”现象。机制研究表明,财政转移支付和国有企业在其中起着关键作用:政府通过建立亲贫财政体系,在不盲目扩张债务的前提下将来自高收入者的税收转化为对低收入者的转移支付和公共服务,从而带动低收入者脱贫;为电力、铁路交通、通信网络提供基础设施的国有企业通过提供服务满足高收入者的需求进行盈利,同时以提供普遍服务或降价的方式为低收入群体提供基础设施,保证其获得基础设施接入的权利,从而带动低收入者脱贫。本文为理解我国“先富带动后富”的机制和实现共同富裕的路径提供了新的思考和证据。

关键词：共同富裕涓滴效应减贫中央转移支付国有企业

Advan.ed Oxidation.Wastewater Treatmen. of 3 LPS of an.Avocado Sauce Compan.,at Morelia,Mich.acan.Mexico

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Journ.l of En.iron.en.al Scien.e an. En.in.erin.(A) 2024年第5期13卷 151-155页

作者： Alfon.o Espitia-Cabrera Fran.isco Javier Barrón.San.os JoséL.Mén.ez-An.on.o h.ctor M.Alemán.Vásquez Omar G.Color-Vázquez San.amien.o y Plan.ación.Ambien.al Azcapotzalco CDMX 02200México En.rgy Departmen. Metropolitan Autonomous University Azcapotzalco CampusCDMX 02200Mexico En.iron.en.al System En.in.erin. Departmen. Environmental Engineering AcademyNational School of Biological SciencesNational Polytechnic InstituteCiudad de MéxicoCDMX 07738México Plan.a Con.eladora y Empacadora n.cion.l Morelia 58190MichoacánMéxico

Th.s paper describes th. wastewater treatmen. of 3 liters per secon. of capacity of disch.rges of capacity,from th. avocado wash.d,as well as th. production.of avocado *** were pretreated with.a grease an. oil trap an. con.ain.d small amoun.s of oil an. grease,dissolved an. total solids,organ.c matter an. trace of organ.c an. in.rgan.c compoun.s from th. vitamin. an. min.rals of *** treatmen. train.is located in.an.small surface an. th. train.is in.egrated with.coagulation.in.lin. with.alumin. in.a static mixer,rapid filtration.in.two steps,double advan.ed oxidation.with.ozon. an. h.terocyclic ph.tocatalysis with.a n.n.film of zin. oxide as,ph.tocatalyzer an. fin.l adsorption.of refractory compoun.s with.activated *** treated wastewater meets th. en.iron.en.al regulation.to urban.sewerage disch.rges of th. city,accordin. to th. results of a Mexican.Certified Laboratory.

关键词： Wastewater primary treatmen. rapid filter performan.e static mixer

A four parameter cubic equation.of state with.temperature depen.en. covolume parameter

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Ch.n.se Journ.l of Ch.mical En.in.erin. 2019年第5期27卷 1132-1148页

作者： Pradn.a n.P.Gh.derao Vish.an.th.h. Dalvi Moh.n.n.rayan Departmen. of Ph.sics Institute of Chemical TechnologyMumbai 400019India Departmen. of Ch.mical En.in.erin. Institute of Chemical TechnologyMumbai 400019India

A four-parameter, Gh.derao–Dalvi–n.rayan.2 cubic equation.of state(GDn. CEOS), is presen.ed wh.ch.in.orporates th. followin.: 1. Th. experimen.al value of th. critical compressibility factor h.s been.used as a fixed in.ut parameter for calculation.;2. All th. parameters(a, b, c, d) of CEOS are temperature depen.en. fun.tion. in.th. subcritical region.an. are temperature in.epen.en. fun.tion. in.th. supercritical region.an.;3. A n.w α fun.tion.is in.roduced with.two compoun. specific parameters wh.ch.are estimated by match.n. saturated vapor pressure at two fixed temperature poin.s Tr= 0.5, 0.7. Our formalism en.bles us to cast th.ee of th. four parameters of th. CEOS as a fun.tion.of th. remain.n. parameter. Th. proposed CEOS is used to predict properties of 334 pure compoun.s, in.ludin. saturated vapor pressure an. liquid den.ity, compressed liquid den.ity, h.at capacities at th. con.tan. pressure an. volume, en.h.lpy of vaporization. soun. velocity. To calculate th.rmodyn.mic properties of a pure compoun., th. presen. CEOS require th. critical temperature, th. critical pressure, th. Pitzer’s acen.ric factor, th. critical compressibility factor, an. two parameters of th. alph. fun.tion. Th. saturated liquid den.ity prediction. for pure fluids are very accurate wh.n.compared with.GDn.(Gh.derao–Dalvi–n.rayan.1),MPR(Modified Pen.–Robin.on., an. PT(Patel–Teja) equation. of state. Un.ike MPR EOS, th. proposed temperature depen.en. covolume parameter b in.th. presen. work satisfies all th. con.train.s men.ion.d in.th. literature to avoid th.rmodyn.mic in.on.isten.ies at th. extreme temperature an. pressure. Usin. van.der Waals on.-fluid mixin. rule, th. presen. CEOS is furth.r used to predict bubble pressure an. th. vapor mole fraction.of bin.ry mixtures.

关键词： Ph.se equilibria Th.rmodyn.mic properties Vapor-liquid equilibria Th. cubic equation of state Covolume parameter Supercritical region

En.an.ed termin.tion.of zin. an. cadmium ion. from wastewater employin. plain.an. ch.tosan.modified mxen.s: syn.h.sis, ch.racterization.an. adsorption.performan.e

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In.luen.e of alloyin. elemen.s on.microstructure an. microh.rdn.ss of Mg-Sn.Zn.based alloys

Green.Ch.mical En.in.erin. 2024年第3期5卷 339-347页

作者： n.ood R.Azeez Suh.ib S.Salih.Moh.mmed Kadh.m h.rith.n.Moh.mmed Tush.r K.Gh.sh Departmen. of Ch.mical En.in.erin. College of Engineering University of Tikrit Departmen. of En.iron.en.al Scien.e College of Energy and Environmental Science Al-Karkh University of Science Departmen. of n.clear Scien.e & En.in.erin. In.titute University of Missouri-Columbia

Zin. an. cadmium pollutan.s cause a sign.fican. en.iron.en.al effect th.t can.ot be ign.red. Due to th.ir con.iderable amoun. in.an.aqueous en.iron.en., in.ustries are seekin. suitable adsorben.s th.t are en.iron.en.ally frien.ly an. in.xpen.ive for removin. metals from wastewater before disposin. of th.m in.surface waters. Th.s research.employed origin.l MXen.(MX) an. ch.tosan.modified MXen.(CSMX) to extract zin.(Zn.Ⅱ)) an. cadmium(Cd(Ⅱ)) metal ion. from water-based solution.. Th. composite material produced was an.lyzed usin. tech.0}ques such.as X-ray Diffraction.XRD), Scan.in. Electron.Microscopy(SEM), Fourier Tran.form In.rared Spectroscopy(FTIR), an. Brun.uer-Emmett-Teller(BET). Th. effects of con.act duration. p h.of th. solution. an. in.tial con.en.ration.of metal ion. on.th. adsorption.process of Zn.Ⅱ) an. Cd(Ⅱ) on.o both.MX an. CSMX composites were in.estigated. MX an. prepared CSMX composite presen.ed a h.gh.adsorption.capacity for both.studied h.avy metals, wh.ch.were 91.55 an. 73.82 mg/g for Zn.Ⅱ) an. Cd(Ⅱ) on.o MX, 106.84 an. 93.07 mg/g for Cd(Ⅱ) an. Zn.Ⅱ) on.o CSMX composite, respectively. Furth.rmore, th. maximum competitive adsorption.capacities for Zn.Ⅱ) on.o MX an. CSMX composites are 77.29 an. 93.47 mg/g, an. for are Cd(Ⅱ)60.30 an. 79.66 mg/g, respectively. h.n.e, th. removal capacities for both.sin.le an. competitive metal ion. were superior to CSMX composite. h.wever, th. adsorption.capacities after five successive regen.ration.sequen.es were on.y dropped by 13.2% for Zn.Ⅱ) an. 17.4% for Cd(Ⅱ) on.o th. CSMX composite compared to th. first cycle. Th.se results con.irm th.t both.metals could be efficien.ly termin.ted from wastewater, wh.ch.makes th. prepared CSMX composite a favorable can.idate adsorben. in.practical application..

关键词： Adsorption Ch.tosan MXen. Zn.II) Cd(II) Wastewater

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Tran.action. of n.n.errous Metals Society of Ch.n. 2010年第12期20卷 2246-2252页

作者： W. L. Ch.n. S. PARK W. n. TAn. B. S. YOU B. h. KOO Sch.ol of n.n. ＆ Advan.ed Materials En.in.erin. Changwon National University Changwon 641-773 South Korea Ligh. Metals Research.Group Korea Institute of Materials Science （KIMS） Changwon 641-831 South Korea

Th. ph.se evolution.in.（88%-91%）Mg-8%Sn.l%Zn.X （X=A1, Mn.an./or Ce） system was an.lyzed via CALPh.D meth.d an. simulation. were used in.precise selection.of th. ch.mical composition. Th. in.luen.e of th. addition.of differen. alloyin. elemen.s such.as A1, Mn.an. Ce on.th. microstructure an. microh.rdn.ss of Mg-8%Sn.l%Zn.based alloys was in.estigated. Combin.d addition.of A1 an. Mn.sh.ws features distin.t from separate addition.of A1 or Mn. Addition. of l%AI an. l%Mn.to base alloy result in.th. formation.of massive A1-Mn.ph.se in.a-Mg matrix grain.. Addition.of Ce elemen. can.refme th. secon. eutectic precipitates an. form in.ermetallic compoun.s with.Sn. Fin. rod-like Sn.Ce ph.se presen.s main.y on.th. grain.boun.aries an. plays a role in.in.ibitin. grain.growth. Th. effects of alloyin. elemen.s on.Vickers microh.rdn.ss an. in.en.ation.size effect of base alloy were examin.d.

关键词： magn.sium alloys alloyin. elemen.s CALPh.D meth.d h.rdn.ss in.en.ation.size effect

伊尔加兹山脉冰缘地貌发育和土壤形成及其气候的影响(土耳其黑海西岸)

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Journ.l of Geograph.cal Scien.es 2024年第3期34卷 543-570页

作者： DEDE Volkan.DEn.IZ Orh.n.DEMIRAG TURAn.in.i TüRKES Murat SEn.L h.seyin.SERIn.Son.r Departmen. of Geograph. Ardahan UniversityArdahan75002Türkiye Departmen. of Soil Scien.e an. Plan. n.trition Faculty of AgricultureOndokuz Mayıs UniversitySamsun55139Türkiye Departmen. of Geograph. Faculty of Human and Social SciencesSamsun UniversitySamsun55080Türkiye Cen.er for Climate Ch.n.e an. Policy Studies Boğaziçi Universityİstanbul34342Türkiye Faculty of Agriculture Department of Soil Science and Plant NutritionIsparta University of Applied SciencesIsparta32200Türkiye In.titute of Social Scien.es İstanbul Universityİstanbul34119Türkiye

Th. main.aims of th. curren. study are to determin. th. morph.logical features of th. periglacial lan.forms(n.n.sorted step,mud circle,ston. earth.circle,th.fur,an. con.eliturbation.located on.th. Ilgaz Moun.ain.,examin. th. ph.sicoch.mical an. min.ralogical properties with.pedological processes of th. soils,an. assess of th. effects of climatic con.ition. con.rollin. th. developmen. of *** Ilgaz Moun.ain.(2587 m a.s.l.),located in.th. Western.Black Sea Region.with.n.th. An.tolian.Moun.ain.,are importan. in.terms of periglacial lan.forms(mud circles,ston. earth.circles,th.furs,n.n.sorted steps,n.n.sorted stripes,con.eliturbation.deposits,an. block curren.s).Th. descriptive statistics of 123 periglacial lan.forms measured by fieldworks were *** distribution.of freezin. an. th.win. in.th. Ilgaz Moun.ain. th.ough.ut th. year was evaluated,an. it was foun. th.t freezin. takes place between.December an. March.freezin.-th.win. takes place in.April,May,October an. n.vember,an. th.win. takes place between.Jun. an. *** to soil properties,organ.c matter con.en. ch.n.es from 1.88%to 12.72%in.n.n.sorted step soils,wh.le it is between.2.03%an. 12.24%in.ston. earth.circle *** organ.c matter is observed to be close to con.eliturbation.deposits at lower ratios compared to n.n.sorted steps,ston. earth.circles an. mud *** soil reaction. on.ston. earth.circles an. n.n.sorted steps vary between.sligh.ly acidic an. sligh.ly *** th. oth.r h.n.,soil samples taken.from th. mud circles are differen. from th.se taken.from th. n.n.sorted steps an. ston. earth.*** soil reaction.is acidic,an. ph.ch.n.es between.4.86 an. *** lime con.en. also varies between.2.81%an. 32.08%,with.an.average of 12.02%.Th. texture properties of soils are domin.n.ly loam an. clay loam,as in.th. n.n.sorted steps,ston. earth.circles,an. mud *** th.ir min.ralogical properties,th. XRD study was carried out to determin. th. primer min.ral

关键词： periglacial lan.forms soil formation climate effect Ilgaz Moun.ain. Türkiye

Effect of Reactivity of Quick Lime on.th. Properties of h.drated Lime Sorben. for SO_2 Removal

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Journ.l of Materials Scien.e & Tech.0}logy 2009年第3期25卷 329-332页

作者： h.G. Sh.n.h. Kim Y.n. Kim h.S. Lee Departmen. of Materials Scien.e an. En.in.erin. Seoul National University Material An.lysis Team Korea Testing Laboratory Sch.ol of Materials Scien.e an. En.in.erin. Pusan National University

Th. h.dration.of quick lime an. th. sulfation.of h.drated lime were carried out for verification.of relation.h.p between.th. reactivity of quick lime an. th. properties of h.drated lime as a sorben.. Th. effect of reactivity of quick lime was in.estigated with.th. ch.n.e of calcin.tion.temperature an. time. Results obtain.d sh.wed th.t th. temperature rise durin. th. h.dration.of quick limes varied from 31 to 69℃ with.th. variation.of calcin.tion.temperature an. time. Th. specific surface area an. th. sulfation.ability of h.drated lime prepared by h.dration.of quick lime sh.wed a proportion.l relation.h.p with.th. reactivity of quick lime. Th. h.drated lime wh.ch.was prepared by h.dration.of quick lime calcin.d at 1100℃ h.d th. h.gh.st reactivity an. sh.wed 41.53 m^2/g of th. specific surface area, 0.16 cm^3/g of th. pore volume an. 87% of th. removal efficien.y for SO2 removal,

关键词： Reactivity Quick lime h.drated lime Calcin.tion h.dration Sorben.

Sol-Gel Syn.h.sized Adsorben.s for Metal Separation

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Tsin.h.a Scien.e an. Tech.0}logy 2006年第2期11卷 233-240页

作者： L. L. Tavlarides J. S. Lee K. h. n.m n. Agarwal Departmen. of Ch.mical En.in.erin. an. Materials Scien.e Syracuse University Syracuse NY 13244 USA

A series of organ.-ceramic adsorben.s h.ve been.syn.h.sized by a sol-gel processin. tech.0}que for metal ion.extraction. Th.se adsorben.s gen.rally h.ve sign.fican.ly h.gh.metal uptake capacities, good ph.sical-ch.mical stabilities, an. well-design.d pore geometries compared to oth.r pre-existin. metalch.latin. ceramic-based adsorben.s. Th.s work describes th. syn.h.sis an. evaluation.of pyrazole an. calix[4]aren. crown.adsorben.s for selective separation.of platin.m, palladium, an. gold an. cesium ion., respectively, from solution.. Th.se materials exh.bit mesoporous properties with.h.gh.surface areas an. pore volumes. Th. sol-gel syn.h.sis startin. with.precursor silan.s an. titan.a results in.gel particles of desired pore ch.racteristics an. h.gh.capacity an. stability. Ch.racterization.studies, such.as adsorption.isoth.rms, breakth.ough.curves for fixed bed operation. an. material stability, sh.w promisin. results for application. to metal sepation.

关键词： metal separation organ.-ceramic adsorben. calixaren. sol-gel syn.h.sis mesoporous