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Na.ozyme ca.a.ysis in a.crowded environment:The impa.t of diffusion a.d surfa.e shielding

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Na.o Resea.ch 2024年第7期17卷 5795-5800页

作者： Va.ily g.Pa.ferov Juewen Liu Depa.tment of Chemistry Waterloo Institute for NanotechnologyWaterlooOntario N2L 3G1Canada

Na.ozymes a.e widely used in va.ious a.plica.ions a. na.osized ca.a.ysts for repla.ing *** a.cura.e estima.ion of the ca.a.ytic a.tivity of na.ozymes in rea. conditions is *** this a.ticle,for the first time,we systema.ica.ly studied the effect of ma.romolecula. molecules co-existing in the rea. system on the oxidoreducta.e(peroxida.e,oxida.e,a.d ca.a.a.e)-mimicking na.ozymes ma.e of a.gold na.opa.ticle core a.d a.pla.inum shell,Prussia. Blue,Mn_(2)O_(3) a.d CoO *** were ma.e with horsera.ish *** distinguished two ma.n mecha.isms of the nega.ive impa.t of ma.romolecules on na.ozyme ca.a.ysis—slowed diffusion a.d surfa.e shielding of *** the first mecha.ism is typica. for enzymes,the second one is specific only for *** the mecha.isms is essentia. for developing a.proa.hes to reduce the una.oida.le impa.t of ma.romolecules for va.ious a.a.ytica. a.d biomedica. a.plica.ions.

关键词： molecula. crowding biosensors na.opa.ticles

The effect of slime a.cumula.ed in a.long-term opera.ing Ua.B using crude glycerol to trea. S-rich wa.tewa.er

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Journa. of Environmenta. Sciences 2024年第1期135卷 353-366页

作者： Xudong Zhou Eva.Fernández-Pa.a.ios a.toni DDora.o Ja.ier La.uente Xa.ier ga.isa.s david ga.riel Key La.ora.ory of Urba. Polluta.t Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China gENOCOV Resea.ch group Department of ChemicalBiological and Environmental EngineeringEscola d’EnginyeriaUniversitat Autònoma de Barcelona08193 BellaterraSpain Depa.tment of Mining Industrial and ICT EngineeringUniversitat Politècnica de CatalunyaAvinguda de les Bases de Manresa 61-7308242 ManresaSpain

a. up-flow a.a.robic sludge bla.ket(Ua.B)rea.tor ta.geting sulfa.e reduction wa. opera.ed under a.consta.t TOC/S-SO2-4ra.io of 1.5±0.3 g C/g S for 639 da.s using crude glycerol a. ca.bon source.a.fila.entous a.d fluffy floccula.t ma.eria.,na.ely slime-like substa.ces(SLS),wa. gra.ua.ly a.cumula.ed in the biorea.tor a.ter the cea.e of metha.ogenic *** a.cumula.ion of SLS wa. followed by a.decrea.e in the remova. efficiencies a.d a.deteriora.ion in the *** cha.a.teristics of SLS were investiga.ed to explore the ca.ses of its forma.ion a.d the effect of SLS on the Ua.B *** showed tha. glycerol fermenta.ion a.d sulfa.e reduction processes ta.ing pla.e in the rea.tor were ma.nly a.complished in the bottom pa.t of the Ua.B rea.tor,a. the sludge concentra.ion in the bottom wa. *** a.cumula.ion of SLS in the Ua.B rea.tor ca.sed sludge flota.ion tha. further led to bioma.s wa.hout,which decrea.ed the sulfa.e a.d glycerol remova. *** a.tivity tests performed with gra.ula. sludge(gS),slime-covered gra.ula. sludge(SCgS)a.d SLS showed tha. there wa. no difference between gS a.d SLS in the mecha.ism of glycerol fermenta.ion a.d sulfa.e ***,the specific sulfa.e reduction ra.e of gS wa. higher tha. tha. of SLS,while SLS showed a.higher glycerol fermenta.ion ra.e tha. tha. of *** different ra.es in gS a.d SLS were a.tributed to the higher rela.ive a.unda.ces of fermenta.ive microorga.isms found in SLS a.d higher rela.ive a.unda.ces of sulfa.e reducing ba.teria.SRB)found in gS.

关键词： Sludge flota.ion gra.ula. sludge Slime-like substa.ces glycerol fermenta.ion Sulfa.e reduction Remova. efficiency

Ma.nesium oxide(MgO)na.oa.sorbents in wa.tewa.er trea.ment:a.comprehensive review

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Journa. of Ma.nesium a.d a.loys 2024年第5期12卷 1709-1773页

作者： H.C.S.Perera.V.guruna.tha.a. a.oop Singh M.M.M.g.P.g.Ma.tila.a.g.Da. Sa.deep a.ya Depa.tment of Physics Khalifa UniversityAbu Dhabi12788United Arab Emirates Postgra.ua.e Institute of Science University of PeradeniyaPeradeniyaSri Lanka Depa.tment of Huma.ities a.d Sciences Guru Nanak Institutions Technical CampusIbrahimpatnamHyderabad501506India Centre for globa. Hea.th Resea.ch Saveetha Medical College and HospitalsSaveetha Institute of Medical and Technical SciencesChennai602105Tamil NaduIndia Depa.tment of Physics University of JammuJammu and Kashmir180006India

Wa.tewa.er conta.ina.ion by hea.y meta.s a.d synthetic dyes presents a.significa.t environmenta. cha.lenge,necessita.ing effective a.d susta.na.le sepa.a.ion *** review a.ticle provides a.deta.led exa.ina.ion of ma.nesium oxide(MgO)na.opa.ticles a. a. innova.ive na.oa.sorbent for wa.tewa.er trea.ment,with a.specific focus on hea.y meta. a.d dye *** review comprehensively explores va.ious a.pects of MgO na.opa.ticles,including their structura. cha.a.teristics a.d synthesis *** a.ticle delves into the morphology a.d crysta.logra.hic a.ra.gement of MgO na.opa.ticles,offering insights into their structura. *** the complexity of a.sorption processes,the review identifies a.d a.a.yzes pa.a.eters influencing the a.sorption efficiency of MgO na.opa.ticles,such a. tempera.ure,pH,conta.t time,initia. concentra.ion,a.d co-existing *** interpla. between these pa.a.eters a.d the a.sorption ca.a.ility of MgO na.opa.ticles empha.izes the importa.ce of optimizing opera.iona. ***,the review a.sesses va.ious synthesis methods for MgO na.opa.ticles,including sol-gel,hydrotherma.,precipita.ion,green synthesis,solvotherma.,a.d templa.e-a.sisted *** discusses the a.va.ta.es,limita.ions,a.d resulting na.opa.ticle cha.a.teristics of ea.h method,ena.ling rea.ers to gra.p the implica.ions of synthesis processes on a.sorption *** comprehensive review consolida.es current insights into the effectiveness of MgO na.opa.ticles a. a.potent na.oa.sorbent for removing hea.y meta.s a.d dyes from wa.tewa.er covering a.wide spectrum of a.pects rela.ed to MgO ***,there is a.need to investiga.e the use of MgO in the trea.ment of a.tua. wa.tewa.er or river wa.er,in order to levera.e its cost-effectiveness a.d high efficiency for pra.tica. wa.er trea.ment a.plica.ions in rea.-time.

关键词： MgO na.opa.ticles Na.oa.sorbent Wa.tewa.er trea.ment Hea.y meta.s Dye sepa.a.ion a.sorption Synthesis methods

a.a.ysis of the discrete conta.t cha.a.teristics ba.ed on the greenwood-Willia.son model a.d the loca.iza.ion principle

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Friction 2024年第5期12卷 1042-1056页

作者： a.a.ta.iya.a.Ya.OVENKO Irina.g.gORYa.HEVA Ishlinsky Institute for Problems in Mecha.ics Ra. Moscow119526Russia

The conta.t of a.rigid body with nomina.ly fla. rough surfa.e a.d a. ela.tic ha.f-spa.e is *** solve the conta.t problem,the greenwood-Willia.son sta.istica. model a.d the loca.iza.ion principle a.e *** developed conta.t model a.lows us to investiga.e the surfa.e a.proa.h a.d the rea. conta.t a.ea.with ta.ing into a.count the a.perities *** is shown tha. the mutua. influence of a.perities cha.ges not only conta.t cha.a.teristics a. the ma.rosca.e,but a.so the conta.t pressure distribution a. the *** follows from the results,the inclusion in the conta.t model of the effect of the mutua. influence of a.perities is especia.ly significa.t for studying the rea. conta.t a.ea.a. well a. the conta.t cha.a.teristics a. high a.plied *** results ca.cula.ed a.cording to the proposed a.proa.h a.e in a.good a.reement with the experimenta.ly observed effects,i.e.,the rea. conta.t a.ea.sa.ura.ion a.d the a.ditiona. complia.ce exha.stion.

关键词： surfa.e roughness ela.ticity greenwood-Willia.son model loca.iza.ion principle a.perity intera.tion

Numerica. simula.ion of three dimensiona. concrete printing ba.ed on a.unified fluid a.d solid mecha.ics formula.ion

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Frontiers of Structura. a.d Civil Engineering 2024年第4期18卷 491-515页

作者： Ja.is REINOLD Koussa. Da.DOUCH günther MESCHKE Institute for Structura. Mecha.ics Ruhr University BochumBochum 44801Germany

Deforma.ion control constitutes one of the ma.n technologica. cha.lenges in three dimensiona.(3D)concrete printing,a.d it presents a.cha.lenge tha. must be a.dressed to a.hieve a.precise a.d relia.le construction ***-ba.ed informa.ion of the expected deforma.ions a.d stresses is required to optimize the construction process in a.socia.ion with the specific properties of the concrete *** this work,a.novel thermodyna.ica.ly consistent finite stra.n constitutive model for fresh a.d ea.ly-a.e 3D-printa.le concrete is *** model is then used to simula.e the 3D concrete printing process to a.sess la.er sha.es,deforma.ions,forces a.ting on substra.e la.ers a.d prognoses of possible structura. colla.se during the la.er-by-la.er *** constitutive formula.ion is ba.ed on a.multiplica.ive split of the deforma.ion gra.ient into ela.tic,a.ing a.d viscopla.tic pa.ts,in combina.ion with a.hyperela.tic potentia. a.d considering evolving ma.eria. properties to a.count for structura. buildup or *** a.va.ta.e of this model is the stress-upda.e-scheme,which is simila. to tha. of sma.l stra.n pla.ticity a.d therefore ena.les a. efficient integra.ion with existing ma.eria. *** constitutive model uses the pa.ticle finite element method,which serves a. the simula.ion fra.ework,a.lowing for modeling of the evolving free surfa.es during the extrusion *** a.a.yses of three printed la.ers a.e used to crea.e deforma.ion plots,which ca. then be used to control the deforma.ions during 3D concrete *** study offers further investiga.ions,on the structura. level,focusing on the potentia. structura. colla.se of a.3D printed concrete *** ca.a.ility of the proposed model to simula.e 3D concrete printing processes a.ross the sca.es—from a.few printed la.ers to the sca.e of the whole printed structure—in a.unified fa.hion with one constitutive formula.ion,is demonstra.ed.

关键词： pa.ticle finite element method 3D concrete printing multiplica.ive split a.ditive ma.ufa.turing ela.toviscopla.ticity

Control system design for a.pressure-tube-type supercritica. wa.er-cooled nuclea. rea.tor via.a.higher order sliding mode method

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Nuclea. Science a.d Techniques 2024年第1期35卷 145-154页

作者： M.Ha.ipour g.R.a.sa.ifa. Depa.tment of Nuclea. Engineering Faculty of PhysicsUniversity of IsfahanIsfahan 81746-73441Iran

Nuclea. power pla.ts exhibit non-linea. a.d time-va.ia.le ***,designing a.control system tha. sets the rea.tor power a.d forces it to follow the desired loa. is complica.ed.a.supercritica. wa.er rea.tor(SCWR)is a.fourth-genera.ion conceptua. *** a. SCWR,the non-linea. dyna.ics of the rea.tor require a.controller ca.a.le of control-ling the *** this study,a.pressure-tube-type SCWR wa. controlled during rea.tor power ma.euvering with a.higher order sliding mode,a.d the rea.tor outgoing stea. tempera.ure a.d pressure were controlled *** a. SCWR,the tempera.ure,pressure,a.d power must be ma.nta.ned a. a.setpoint(desired va.ue)during power *** point kinetics equa.ions with three groups of dela.ed neutrons were used in the ***-order a.d cla.sic sliding mode controllers were sepa.a.ely ma.ufa.tured to control the pla.t a.d were compa.ed with the PI controllers speci-fied in previous *** controlled pa.a.eters were rea.tor power,stea. tempera.ure,a.d ***,for these pa.a.eters,the PI controller ha. certa.n insta.ilities in the presence of *** cla.sic sliding mode controller ha. a.higher a.cura.y a.d sta.ility;however its ma.n dra.ba.k wa. the cha.tering *** wa. highly a.cura.e a.d sta.le a.d ha. a.sma.l computa.iona. *** rea.ity,it followed the desired va.ues without oscilla.ions a.d cha.tering.

关键词： Supercritica. wa.er nuclea. rea.tor Higher order sliding mode controller Stea. tempera.ure Stea. pressure Point kinetics model

a.meta.olic signa.ling role for a.ginine in liver ca.cer

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Life Meta.olism 2024年第1期3卷 1-3页

作者： david Sokolov Luca. B.Sulliva. Huma. Biology Division Fred Hutchinson Cancer CenterSeattleWA 98109United States

In a.dition to their ca.onica. roles in biosynthetic pa.hwa.s,meta.olites ca. be a.tive pa.ticipa.ts in oncogenic signa.-ling,but our understa.ding of these signa.ling mecha.isms is *** a.recent a.ticle published in Cell,Mossma.n et *** a.novel signa.ling role for a.cumula.ed a.ginine in hepa.o-cellula. ca.cinoma.HCC)media.ed by the RNa.splicing fa.tor a.d tra.scriptiona. modifier RNa.binding protein 39(RBM39).

关键词： incomplete ca.cer

Simula.ion of the SMILE Soft X-ra. Ima.er response to a.southwa.d interpla.eta.y ma.netic field turning

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Ea.th a.d Pla.eta.y Physics 2024年第1期8卷 39-46页

作者： a.drey Sa.sonov gra.iella.Bra.dua.di-Ra.mont Steven Semba. a.drew Rea. david Sibeck Lutz Ra.ta.tter Mulla.d Spa.e Science La.ora.ory University College LondonDorking RH56NTUK Leicester University Leicester LE17RHUK godda.d Spa.e Flight Center National Aeronautics and Space AdministrationGreenbeltMD 20771USA

The Sola. wind Ma.netosphere Ionosphere Link Explorer(SMILE)Soft X-ra. Ima.er(SXI)will shine a.spotlight on ma.netopa.se dyna.ics during ma.netic *** simula.e a. event with a.southwa.d interpla.eta.y ma.netic field turning a.d produce SXI count ma.s with a.5-minute integra.ion *** ma.ing a.sumptions a.out the ma.netopa.se sha.e,we find the ma.netopa.se sta.doff dista.ce from the count ma.s a.d compa.e it with the one obta.ned directly from the ma.netohydrodyna.ic(MHD)*** root mea. squa.e devia.ions between the reconstructed a.d MHD sta.doff dista.ces do not exceed 0.2 RE(Ea.th ra.ius)a.d the ma.ima. difference equa.s 0.24 RE during the 25-minute interva. a.ound the southwa.d turning.

关键词： ma.netopa.se ma.netic reconnection sola. wind cha.ge excha.ge southwa.d interpla.eta.y ma.netic field numerica. modeling Sola. wind Ma.netosphere Ionosphere Link Explorer(SMILE) Soft X-ra. Ima.er

Finite control set model predictive control of three-port converter for interfa.ing a.PV-ba.tery energy stora.e system to a.three-pha.e sta.d-a.one a. system

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CLEa. ENERgY 2024年第2期8卷 73-84页

作者： Preeti, ga.ga.hetty a. Ka.thikeya., a.ba.a.a. Na.l Inst Technol Ka.na.a.a Dept Elect & Elect Engn Surathkal 575025 India

This pa.er proposes a.multiport bidirectiona. non-isola.ed converter topology tha. provides a.va.ta.es in terms of simulta.eous multiple opera.ions, single-sta.e conversion, high power density a.d reduced power losses due to the lower number of switches. The proposed multiport converter uses a.centra.ized non-linea. controller known a. a.finite control set model predictive controller to ma.a.e the flow of power between different ports. It dea.s with the pa.a.lel opera.ion of photovolta.c a.d ba.tery energy stora.e systems for sta.d-a.one a.terna.ing current (a.) systems. The converter connects the lower volta.e ba.tery to the photovolta.c port using a.bidirectiona. buck/boost converter a.d the photovolta.c port is linked to the sta.d-a.one a. loa. through a.three-pha.e full-bridge inverter. Ea.h leg of the three-pha.e converter will a.t a. a.bidirectiona. direct current (DC)/DC converter a. well a. a. inverter simulta.eously. Only six switches ma.a.e the power tra.sfer between a.l the connected ports of photovolta.c-ba.tery energy stora.e system linked to the sta.d-a.one a. loa.. The proposed multiport converter is ma.hema.ica.ly modelled a.d controlled by a.finite control set model predictive controller. The system is va.ida.ed in simula.ion (1-kW ra.ing) a.d experimenta. environment (200-W ra.ing). The ha.dwa.e prototype is developed in the la.ora.ory a.d the controller is implemented on the field-progra.ma.le ga.e a.ra. boa.d. Two independent ca.e studies a.e ca.ried out to va.ida.e the effica.y of the system. The first scena.io is for a.cha.ge in sola. irra.ia.ce, while the second scena.io is for a.cha.ge in the output loa.. a.multiport bidirectiona. non-isola.ed converter topology for a.PV-ba.tery energy stora.e system provides a.va.ta.es in terms of simulta.eous multiple opera.ions, single-sta.e conversion, high power density a.d reduced power losses. The proposed converter is va.ida.ed through simula.ion (1-kW sca.e) a.d experiment (200-W sca.e). gra.hica. a.

关键词： multiport converter DC/a. converter DC/DC converter finite control set model predictive controller (FCSMPC) PV-BESS three-pha.e converter DC-DC CONVERTER RENEWa.LE ENERgY