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Understa.ding the corrosion a.d bio-corrosion beha.iour of Ma.nesium composites – a.critica. review

Journa. of Ma.nesium a.d a.loys 2024年第3期12卷 890-939页

作者： Prithivira.a. Sek.0} S.k.Pa.igra.i Depa.tment of Mecha.ica. Engineering Indian Institute of Technology MadrasChennai600036India a.plied Ma.nesium Resea.ch Center Center of Excellence in Materials and Manufacturing for Futuristic MobilityIndian Institute of Technology MadrasChennai600036India

Rea.ising the potentia. of Ma.nesium(Mg),severa. globa.ly lea.ing ventures ha.e invested in the Mg industry,but their rela.ively poor corrosion resista.ce is a.never ending sa.a.till *** corrosion a.d bio-corrosion beha.iour of Mg ha. ga.ned resea.ch a.tention a.d still rema.ns a.hot topic in the a.plica.ion of a.tomobile,a.rospa.e a.d biomedica. *** intrinsic high electrochemica. na.ure of Mg limits their utiliza.ion in diverse *** scena.io ha. prompted the development of Mg composites with a. a.m to a.hieve superior corrosion a.d bio-corrosion *** present review enlightens the influence of gra.n size(GS),seconda.y pha.e,texture,type of ma.rix a.d reinforcement on the corrosion a.d bio-corrosion beha.iour of Mg ***,the corrosion a.d bio-corrosion beha.iour of Mg composites ma.ufa.tured by prima.y a.d seconda.y processing routes a.e ***,the comprehensive corrosion a.d bio-corrosion mecha.isms of these Mg composites a.e ***,the individua. role of GS,texture a.d corrosive medium on corrosion a.d bio-corrosion beha.iour of Mg composites a.e cla.ified a.d *** cha.lenges encountered,una.swered issues in this field a.e expla.ned in deta.l a.d a.cordingly the scope for future resea.ch is *** review is presented from ba.ic concrete ba.k.round to a.va.ced corrosion mecha.isms with a. a.m of crea.ing interest a.ong the rea.ers lik. students,resea.chers a.d industry experts from va.ious resea.ch ***,the corrosion a.d bio-corrosion beha.iour of Mg composites a.e critica.ly reviewed for the first time to:(i)contribute to the body of k.owledge,(ii)foster resea.ch a.d development,(iii)ma.e brea.through,a.d(iv)crea.e life cha.ging innova.ions in the field of Mg composite corrosion.

关键词： Corrosion Bio corrosion Ma.nesium a.loys Ma.nesium composites Ma.nesium impla.ts.

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Long Term X-Ra. Spectra. Va.ia.ions of the Seyfert-1 Ga.a.y Mrk.279

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Resea.ch in a.tronomy a.d a.trophysics 2024年第6期24卷 307-314页

作者： k.a.hila.Ra.jeev Misra.Sa.ithri H.Ezhik.de k.Jeena Depa.tment of Physics Providence Women’s CollegeUniversity of CalicutKerala 673009India Inter-University Centre for a.tronomy a.d a.trophysics(IUCa.) PB No.4GaneshkhindPune 411007India Depa.tment of Physics a.d Electronics CHRIST(Deemed to be University)Hosur Main RoadBangalore 560029India

We present the results from a.long term X-ra. a.a.ysis of Mrk.279 during the period 2018–*** use da.a.from multiple missions–a.troSa.,NuSTa. a.d XMM-Newton,for the *** X-ra. spectrum ca. be modeled a. a.double Comptoniza.ion a.ong with the presence of neutra. Fe k.line emission,a. a.l *** determined the source’s X-ra. flux a.d luminosity a. these different *** find significa.t va.ia.ions in the source’s flux *** a.so investiga.e the va.ia.ions in the source’s spectra. components during the observa.ion *** find tha. the photon index a.d hence the spectra. sha.e follow the va.ia.ions only over longer time *** probe the correla.ions between fluxes of different ba.ds a.d their photon indices,a.d found no significa.t correla.ions between the pa.a.eters.

关键词： ga.a.ies:Seyfert ga.a.ies:individua.(Mrk.335) X-ra.s:ga.a.ies

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a.plica.ility limits of the Da. test in pla.tic bonded explosives

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Defence Technology（防务技术） 2024年第6期36卷 64-70页

作者： Ma.tin k.nzel Jindrich k.cera.Jiri Pa.hma. OZM Resea.ch Bliznovice 32Hrochuv Tynec 53862Czech Republic Institute of Energetic Ma.eria.s Faculty of Chemical TechnologyUniversity of PardubiceStudentska 95Pardubice 53210Czech Republic

The Disc a.celera.ion e Xperiment(Da.)is one of the most recent experimenta. methods of performa.ce cha.a.teriza.ion of new energetic ma.eria.s.a.cylindrica. explosive cha.ge a.celera.es a.thin meta.lic disc a.d its velocity is mea.ured continuously using photonic Doppler *** detona.ion velocity is mea.ured *** Da. test ca. be used to obta.n the Cha.ma.-Jouguet(CJ)detona.ion pressure a.d to describe detona.ion products expa.sion using reduced a.ount of explosive.a.series of Da. tests wa. performed a. va.ious cha.ge dia.eters a.d disc thick.esses with Semtex 1 a.pla.tic bonded explosive a.d sensitized *** Da.-lik. eva.ua.ion wa. a.so a.plied to previously mea.ured da.a.of Semtex 1a.a.d a.IX-1 *** optimum disc thick.ess is determined by the disc to explosive ma.s ra.io of *** repea.a.ility of the Semtex 1 a.detona.ion pressure results is a.out four times lower compa.ed to the pressed a.d liquid explosives.

关键词： Flyer pla.e Detona.ion pressure Photonic Doppler velocimetry Semtex

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Effect of orga.ic component(ta.tra.e) a.dition on cerium nitra.e's a.ility to inhibit corrosion of mild steel in Na.l solution

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Journa. of Ra.e Ea.ths 2024年第10期42卷 1995-2002页

作者： Mina.shi k.unda. Chha.a.Sha.ma.a.k.Singh Depa.tment of a.plied Science a.d Engineering Indian Institute of Technology RoorkeeSaharanpur CampusSaharanpurU.247001India Depa.tment of Pulp a.d Pa.er Technology India. Institute of Technology Roork. Saharanpur CampusSaharanpurU.p247001India

Cerium ta.tra.e(CeTa.),produced in this study by precipita.ing cerium nitra.e with pota.sium sodium ta.tra.e(k.a.a.),wa. exa.ined a. a.corrosion *** loss tests show inhibition efficiency of 71.7% with Ce(NO_(3))_(3) a.d 88.7% with CeTa. inhibitor for one-month exposure to mild steel in 7 g/L Na.l *** inhibition efficiency drops to 28.6% with the fo rmer a.d rema.ns a.ound 8 7% with the la.ter inhibitor a.ter six months of *** results from electrochemica. testing indica.e tha. the inhibition efficiency decrea.es by a.ding cerium ***,the cerium ta.tra.e inhibitor demonstra.es a.nea.ly consta.t inhibition efficiency for up to 30 d,i.e.,≈90%.Electrochemica. impeda.ce spectroscopy(EIS) performed in these ca.es shows the following results:(ⅰ) with cerium nitra.e,a.film of iron a.d cerium oxide,which on prolonged exposure diminishes,a.d(ⅱ) with cerium ta.tra.e,the forma.ion of a.bimeta.lic film(Fe-ta.tra.e-Ce) a.d a.mixture of cerium hydroxide a.d iro n oxide tha. protects steel for a.longer *** inferences a.e ba.ed on the a.a.yses of sca.ning electron microscopy/energydispersive X-ra. a.a.ysis(SEM/EDa.),X-ra. diffra.tion(XRD),Fourier tra.sform infra.ed spectroscopy(FTIR),X-ra. photoelectron(XPS),a.d Ra.a. spectroscopy results.

关键词： Cerium ta.tra.e Cerium nitra.e Corrosion inhibition Mild steel Inhibitor film cha.a.teriza.ion Ra.e ea.ths

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a.new route to wea. force sensing beyond SQL:Squeezed ma.nons in ca.ity ma.nomecha.ics

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Science China.Physics,Mecha.ics & a.tronomy) 2024年第10期67卷 166-167页

作者： S.k.Özdemir Depa.tment of Engineering Science a.d Mecha.ics and Materials Research Institute(MRI)The Pennsylvania State UniversityUniversity ParkPA 16802USA

Qua.tum mecha.ics imposes limits on mea.urement a.cura.y through qua.tum noise which typica.ly ha. two components:First is the shot noise origina.ing from va.uum fluctua.ions a.d referred to a. the imprecision *** is ... 详细信息

关键词： qua.tum typica.ly va.uum

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Hybrid Pra.rie Dog a.d Beluga.Wha.e Optimiza.ion a.gorithm for Multi-Objective Loa. Ba.a.ced-Ta.k.Scheduling in Cloud Computing Environments

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China.Communica.ions 2024年第7期21卷 307-324页

作者： k.Ra.ya.Senthilselvi a.othi Depa.tment of Computer Science a.d Engineering SRM Institute of Science and TechnologyRamapuramChennaiTamil Nadu 600089India

The cloud computing technology is utilized for a.hieving resource utiliza.ion of remoteba.ed virtua. computer to fa.ilita.e the consumers with ra.id a.d a.cura.e ma.sive da.a.*** utilizes on-dema.d resource provisioning,but the necessita.ed constra.nts of ra.id turna.ound time,minima. execution cost,high ra.e of resource utiliza.ion a.d limited ma.espa. tra.sforms the Loa. Ba.a.cing(LB)process-ba.ed Ta.k.Scheduling(TS)problem into a. NP-ha.d optimiza.ion *** this pa.er,Hybrid Pra.rie Dog a.d Beluga.Wha.e Optimiza.ion a.gorithm(HPDBWOa.is propounded for precise ma.ping of ta.k. to virtua. ma.hines with the due objective of a.dressing the dyna.ic na.ure of cloud *** ca.a.ility of HPDBWOa.helps in decrea.ing the SLa.viola.ions a.d Ma.espa. with optima. resource *** is modelled a. a.scheduling stra.egy which utilizes the merits of PDOa.a.d BWOa.for a.ta.ning rea.tive decisions ma.ing with respect to the process of a.signing the ta.k. to virtua. resources by considering their priorities into *** a.dresses the problem of pre-convergence with wellba.a.ced explora.ion a.d exploita.ion to a.ta.n necessita.ed Qua.ity of Service(QoS)for minimizing the wa.ting time incurred during TS *** further ba.a.ced explora.ion a.d exploita.ion ra.es for reducing the ma.espa. during the ta.k.a.loca.ion with complete a.a.eness of VM *** results of the proposed HPDBWOa.confirmed minimized energy utiliza.ion of 32.18% a.d reduced cost of 28.94% better tha. a.proa.hes used for *** sta.istica. investiga.ion of the proposed HPDBWOa.conducted using a.OVa.confirmed its effica.y over the benchma.k.d systems in terms of throughput,system,a.d response time.

关键词： Beluga.Wha.e Optimiza.ion a.gorithm(BWOa. cloud computing Improved Hopcroft-k.0}p a.gorithm Infra.tructure a. a.Service(Ia.S) Pra.rie Dog Optimiza.ion a.gorithm(PDOa. Virtua. Ma.hine(VM)

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a.gresome-a.grepha.y tra.sition process:geting closer to the functiona. roles of HDa.6 a.d Ba.3

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Neura. Regenera.ion Resea.ch 2024年第6期19卷 1181-1182页

作者： Ha.en k.rschgen Christia. Behl The a.topha.y La. Institute of PathobiochemistryUniversity Medical Center of the Johannes Gutenberg University MainzMainzGermany

Misfolding of proteins a. well a. their a.grega.ion is a.ma.or driver of a.e-rela.ed neurodegenera.ive ***,cells ha.e evolved sophistica.ed protein qua.ity control *** the ubiquitin-protea.ome-system(UPS)a.d the a.top... 详细信息

关键词： closer system tra.sition

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Na.iga.ing Ma.k.t Choices: Understa.ding Ca.rot Ma.k.t Outlet Selection a.ong Sma.lholder Fa.mers in k.nya

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a.ricultura. Sciences 2024年第6期15卷 676-703页

作者： Hilla.y k.protich Ngeno Ngenoh Eva.s Osca. a.uya.Inga.ia.Hilla.y k. Bett Sta.e Depa.tment for Crop Development a.d a.ricultura. Resea.ch Ministry of Agriculture Livestock Fisheries and Cooperatives Nairobi Kenya Depa.tment of a.ricultura. Economics a.d a.ribusiness Ma.a.ement Egerton University Egerton Kenya Brook.yn Economic Consulting Limited Nairobi Kenya

This resea.ch delves into the hurdles a.d stra.egies a.med a. a.gmenting the ma.k.t involvement of sma.lholder ca.rot fa.mers in Na.uru County, k.nya. Employing a.Multinomia. Logit (MNL) model, it scrutinizes the fa.tors influencing the selection of ma.k.ting outlets a.ong ca.rot fa.mers. The findings unveil tha. a.significa.t ma.ority (81%) of surveyed fa.mers a.tively pa.ticipa.e in diverse ma.k.t outlets, encompa.sing the fa.m ga.e, clea.ing point, loca. ma.k.t, externa. ma.k.t, a.d export ma.k.t. Nota.ly, pivota. buyers include a.grega.ors, brok.rs, wholesa.ers, reta.lers, a.d consumers, with tra.sa.tions predomina.tly occurring a. the fa.m level. a.ditiona.ly, the a.a.ysis discerns substa.tia. influences of socio-economic cha.a.teristics, experientia. fa.tors, a.d geogra.hica. proximity on fa.mers’ choices of ma.k.t outlets. Specifica.ly, gender, a.e, la.d size, fa.ming experience, a.d dista.ce to ma.k.ts emerge a. critica. determina.ts. Moreover, the study delves into the exa.ina.ion of ma.k.t ma.gins a.ong the ca.rot va.ue cha.n, shedding light on the potentia. profita.ility of ca.rot fa.ming in the region. Rema.k.0}ly, higher a.era.e gross ma.gins a.e identified in export a.d externa. ma.k.ts, signa.ing lucra.ive prospects for fa.mers ta.geting these segments. However, dispa.ities in profit distribution between fa.mers a.d tra.ers underscore the necessity for interventions to ensure equita.le va.ue distribution throughout the va.ue cha.n. These findings underscore the impera.ive for ta.lored interventions to ta.k.e cha.lenges a.d foster inclusive a.ricultura. development. Stra.egies such a. fa.mer orga.iza.ions, contra.ting, a.d vertica. integra.ion a.e a.voca.ed to enha.ce ma.k.t a.cess a.d profita.ility for sma.lholder ca.rot fa.mers. Thus, this study enriches our comprehension of the dyna.ics within ca.rot va.ue cha.ns a.d provides va.ua.le insights for policyma.ers a.d development pra.titioners a.ming to uplift rura. livelihoods a.d bolster food security.

关键词： Ma.k.t Outlet Selection Sma.lholder Fa.mers Multinomia. Logit Model Determina.ts Ca.rot Va.ue Cha.n

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One-Pot Green Synthesis of 1, 4-Dihydropyridine Deriva.ives Using Polyindole TiO2 Na.oca.a.yst by Solvent Free Method

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Open Journa. of Composite Ma.eria.s 2024年第3期14卷 109-123页

作者： Deepa. Ba.a.a.eb Pha.a.e Sa.ja. k. Sha.ma.Ba.ra. Tripa.hi Sonia.Cha.a. Sriva.ta.a Depa.tment of Chemistry JECRC University Jaipur India S. S. Ja.n Subodh PG College Jaipur India

This study used a.Polyindole in combina.ion with TiO2 na.oca.a.yst a. a. efficient heterogeneous ca.a.yst to ca.ry out a.multi-component Ha.tzsch rea.tion involving different a.oma.ic a.dehydes with methyl a.etoa.eta.e, a.d a.ueous a.monium to crea.e 1,4-dihydropyridine deriva.ives under solvent free condition a. a.bient tempera.ure. a.broa. ra.ge of a.dehydes a.d methyl a.etoa.eta.es, ra.ging from heteroa.oma.ic to polya.oma.ic one, with high level of functiona. group tolera.ce ca. be used to provide the desired products possessing releva.t medicina. moiety in high yields. This technology ha. prospective a.va.ta.es over current protocols, including the utiliza.ion of a.chea., sta.le, recycla.le, a.d sa.e ca.a.yst, quick.r rea.tion times with higher yields a.d simple product isola.ion.

关键词： TiO2 Na.oca.a.yst Green Synthesis Surfa.e Morphology

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Qua.tifica.ion of Structura.ly a.ert Muta.enic Impurities in Meropenem Trihydra.e Drug Substa.ce by Liquid Chroma.ogra.hy with High Resolution Ma.s Spectrometer (LC-HRMS)

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a.erica. Journa. of a.a.ytica. Chemistry 2024年第3期15卷 119-133页

作者： a.wa. Sula.ma. k. Ra.a.rishna.Reddy Vunda.illi Ja.a.eesh k.ma. Hema.t k.ma. Sha.ma REVa.University Bangalore India Qua.ity Division Aurobindo Pharma Limited Hyderabad India a.L Resea.ch Centre-II Analytical Research Department Aurobindo Pharma Limited Hyderabad India

Potentia. muta.enic impurities in a.tive Pha.ma.eutica. Ingredient, Meropenem Trihydra.e were a.sessed a.d a.novel a.a.ytica. method for their qua.tifica.ion wa. developed a.d va.ida.ed. This Liquid Chroma.ogra.hic method using High Resolution Ma.s Spectrometer (LC-HRMS) technique is proved to be suita.le for simulta.eous qua.tifica.ion of a.l ten identified impurities with required specificity, sensitivity, resolution, precision, a.cura.y, a.d other method cha.a.teristics a. per ICH Guidelines. The a.cepta.le limit of less tha. 2.9 μg/g wa. considered for eva.ua.ions, ba.ed on drug substa.ce dosa.e a.d dura.ion of trea.ment. The method sta.ds most sensitive with a.Limit of Detection of 0.35 μg/g, considering the cha.lenge full a.cepta.ce criteria.a. per current regula.ory sta.da.ds.

关键词： Muta.enic Impurities LC-HRMS Meropenem Trihydra.e Method Va.ida.ion

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