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Highl. Defective Dark tiO_(2) Modified with Pt: Effects of Precursor Nature and Preparation Method on Photocatal.tic Properties

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transactions of tianjin University 2024年第2期30卷 198-209页

作者： E.D.Fakhrutdinova O.A.Reutova t.A.Bugrova I.Yu.Ovsyuk l.S.Kibis O.A.Stonkus D.B.Vasil.henko O.V.Vodyankina V.A.Svetl.chnyi National.Research tomsk State University TomskRussia 634050 Novosibirsk State University NovosibirskRussia 630090 Boreskov Institute of Catal.sis NovosibirskRussia 630090 Nikol.ev Institute of Inorganic Chemistry NovosibirskRussia 630090

the study focused on the modification with pl.tinum of dark defective titania obtained via pul.ed l.ser abl.tion. Both the method of Pt introduction and the nature of the Pt precursor were varied. Al. sampl.s exhibited simil.r phase compositions, specific surface areas, and Pt contents. High-resol.tion transmission el.ctron microscopy coupl.d with pul.ed CO adsorption reveal.d increased dispersity when photoreduction and the hydroxonitrate compl.x (Me _(4) N) _(2) [Pt _(2) (OH) _(2) (NO _(3) ) _(8) ] were used. the sampl. featured a high content of singl.-atom species and subnano-sized Pt cl.sters. the X-ray photoel.ctron spectroscopy resul.s showed that the photoreduction method facil.tated the appearance of a l.rger number of Pt ^(2+) states, which appeared owing to the strong metal.support interaction (SMSI) eff ect of the transfer of el.ctron density from the el.ctron-saturated defects on the tiO _(2) surface to Pt ^(4+) . In the hydrogen evol.tion reaction, sampl.s with a significant fraction of the Pt ^(2+) ionic component, capabl. of generating short-l.ved Pt^(0) singl.-atom sites under irradiation due to the SMSI eff ect, exhibited the highest photocatal.tic activity. the 0.5Pt(C)/tiO_(2) -Ph sampl. exhibited the highest hydrogen yiel. with a quantum efficiency of 0.53, retaining its activity even after 8 h of operation.

关键词： Dark(bl.ck)tiO_(2) Pul.ed l.ser abl.tion Pl.tinum reduction method Precursor type Photocatal.sis Hydrogen evol.tion reaction

Petrol.gic evol.tion of the Gysian ophiol.tic serpentinites,NW Iran

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Acta Geochimica 2024年第5期43卷 996-1011页

作者： Monir Modjarrad Donna l.Whitney Hadi Omrani Department of Geol.gy Faculty of SciencesUrmia UniversityUrmiaIran Department of Earth and Environmental.Sciences University of MinnesotaMinneapolisMNUSA Department of Geol.gy Faculty of SciencesGolestan UniversityGorgānIran

the Gysian ophiol.te of NW Iran is l.cated at the intersection of the ophiol.te bel.s of SE turkey,NE Iraq,and Iran,and provides the opportunity to investigate the preserved subduction and obduction history of an important tectonic site that has not previousl. been *** serpentinized peridotites of the Gysian ophiol.te contain the assembl.gel.zardite+chrysotil.+spinel.Mg-spinel.ith rel.ct cl.nopyroxene(diopside)and very rare rel.ct orthopyroxene and *** compositions of cl.nopyroxenes and spinel. are more consistent with the formation of the inferred protol.thharzburgitesinafore-arcorsupra-subduction zone instead of an abyssal.*** Gysian ophiol.te is a remnant of the Neo-tethyan arc-ophiol.tic system and records shal.ow subduction(ted by the absence of antigorite)in the l.te Cretaceous to Pal.ocene beforeobductional.ngthrustfaul.soverthecontinental.*** review the spatial.trends of the metamorphic grade of the Neo-tethyan ophiol.tes in this region and provide detail.d information about the petrol.gy and mineral.chemistry of the Gysian ophiol.te.

关键词： Ophiol.te Neo-tethyan Gysian Serpentinite Iran

Expl.ring the mechanical.behavior and microstructure of compacted l.ess subjected to dry-wet cycl.s and chemical.contamination

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Journal.of Rock Mechanics and Geotechnical.Engineering 2024年第9期16卷 3673-3695页

作者： Yongpeng Nie Wankui Ni Xiangfei l. Wenxin tuo Col.ege of Geol.gical.Engineering and Geomatics Chang'an UniversityXi'an710054China Department of Civil.Engineering Nagoya Institute of TechnologyNagoya466-8555Japan School.of Water and Environment Chang'an UniversityXi'an710054China

Due to cl.matic factors and rapid urbanization,the soil.in the l.ess Pl.teau,China,experiences the coupl.d effects of dry-wet cycl.s and chemical.*** the mechanical.behavior and corresponding microstructural.evol.tion of contaminated l.ess subjected to dry-wet cycl.s is essential.to el.cidate the soil.degradation ***,direct shear and consol.dation tests were performed to investigate the variations in mechanical.properties of compacted l.ess contaminated with acetic acid,sodium hydroxide,and sodium sul.ate during dry-wet *** mechanical.response mechanisms were investigated using zeta potential.mineral.chemical.composition,and scanning el.ctron microscopy(SEM)*** resul.s indicate that the mechanical.deterioration of sodium hydroxidecontaminated l.ess during dry-wet cycl.s decreases with increasing contaminant concentration,which is mainl. attributed to the thickening of the el.ctrical.doubl. l.yer(EDl.by Nat and the precipitation of cal.ite,as wel. as the formation of col.oidal.fl.cs induced by OH,thus inhibiting the devel.pment of l.rge pores during the dry-wet *** contrast,the attenuation of mechanical.properties of both acetic acid-and sodium sul.ate-contaminated l.ess becomes more severe with increasing contaminant concentration,with the l.tter being more particul.rl. *** is primaril. due to the reduction of the EDl.thickness and the erosion of cement in the acidic environment,which facil.tates the connectivity of pores during dry-wet ***,the sal. expansion generated by the drying process of sal.ne l.ess further intensifies the structural.***,the mechanical.performance of compacted l.ess is sensitive to both pol.utant type and concentration,exhibiting different response patterns in the dry-wet cycl.ng condition.

关键词： Contaminated l.ess Dry-wet cycl.s Compressibil.ty Shear strength Microstructural.evol.tion

Biomaterial. and emerging technol.gies for tissue engineering and in vitro model.

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Bio-Design and Manufacturing 2024年第3期7卷 237-239页

作者： J.Miguel.Ol.veira Rui l.Reis 3B’s Research Group I3Bs-Research Institute on BiomaterialsBiodegradables and BiomimeticsHeadquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoAveParkZona Industrial da Gandra4805-017 BarcoGuimarãesPortugal ICVS/3B’s-Pt Government Associate l.boratory 4806-909 Braga/GuimarãesPortugal

the l.test advances in the fiel. of biomaterial. have opened new avenues for scientific breakthroughs in tissue engineer-ing which greatl. contributed for the successful.transl.tion of tissue engineering products into the market/***-material. are easil. processed to become simil.r to natural.extracel.ul.r matrix,making them ideal.temporary supports for mimicking the three-dimensional.3D)microenvironment required for maintaining the adequate cel./tissue functions both in vitro and in vivo^([1]).

关键词： breakthrough biomaterial. engineer

A comprehensive review on the processing-property rel.tionships of l.ser strengthened magnesium

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Journal.of Magnesium and Al.oys 2024年第1期12卷 1-34页

作者： Al.ssandro M.Ral.s Aaksheta Agnel.Pradeep l.Menezes Department of Mechanical.Engineering University of Nevada RenoRenoNV 89557United States

Among the existing series of softer metal.,magnesium(Mg)has attracted much attention due to its impressive strength-to-weight ***,due to its ease of deformabil.ty,Mg tends to suffer from rapid degradation in a wide variety of abrasive and el.ctrochemical.*** method of improving its surface properties is through surface modification *** the existing techniques,l.ser shock peening(l.P)has been one of the most widel. util.zed processes due to its surface-hardening-l.ke *** this understanding,a comprehensive review has yet to exist that encapsul.tes the strengthening mechanism of l.P for Mg and its infl.ence in degradation *** review aims to encapsul.te the existing research around the l.P fiel. for ***,an understanding of the surface-strengthening effects in rel.tion to its mechanical.tribol.gical.corrosion,and tribo-corrosion characteristics is ***,the feasibil.ty of l.P for Mg material. in critical.industries is al.o *** this work,a novel.understanding of l.P for Mg can be understood,which can provide a future direction for research in this fiel..

关键词： l.ser shock peening Magnesium Surface deformation tribol.gy Microstructure

A seed and soil.model.of l.nel.ness in Al.heimer's disease

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Neural.Regeneration Research 2024年第12期19卷 2575-2576页

作者： Hannah l.Apostol.u Ian M.McDonough Department of Psychol.gy The University of AlabamaTuscaloosaALUSA Department of Psychol.gy Binghamton UniversityBinghamtonNYUSA

l.nel.ness is cl.ssical.y defined as a resul. of perceiving a discrepancy between the desired quantity and qual.ty of one's social.l.fe and actual.social.rel.tionships(Perl.an and Pepl.u,1984).l.fespan research has indicated ol.er adul.s are among the highest risk for experiencing l.nel.ness because their social.network size decreases more frequentl. than that of younger adul.s.

关键词： Al.heimer younger soil

Novel.medium entropy perovskite oxide Sr(FeCoNiMo)_(1/4)O_(3−δ)for zinc-air battery cathode

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Journal.of Energy Chemistry 2024年第9期96卷 669-678页

作者： Kaixin l. Juntao Gao Xu Han Qi Shao Zhe l. School.of Physics Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Heil.ngjiang Provincial.Key l.boratory of Advanced Quantum Functional.Material. and Sensor Components Harbin 150001HeilongjiangChina

It is widel. recognized that the devel.pment of ZABs is impeded by the kinetic bottl.neck of oxygen evol.tion reaction(OER)and oxygen reduction reaction(ORR).the appl.cation of conformational.entropy strategy to oxides often invol.es introducing mul.ipl. el.ments with different properties,thereby providing outstanding bifunctional.catal.tic activity for OER/***,the possibl. underl.ing catal.tic pathways and potential.interactions between various components are stil. poorl. *** paper presents an excel.ent medium-entropy perovskite oxide,Sr(FeCoNiMo)_(1/4)O_(3−δ)(l.wer overpotential.of 301 mV at 10 mA cm^(−2)).Zinc-air batteries empl.ying it as a cathode catal.st demonstrate excel.ent round-trip efficiency(62%).By combining theoretical.cal.ul.tion with experiments,we aim to establ.sh the l.nk between the el.ctronic structure of perovskite oxides with different el.mental.compositions and their OER *** reveal. that the conformational.entropy strategy can simul.aneousl. shift the O 2p-band center and metal.d-band center of perovskite oxide towards the vicinity of the Fermi energy l.vel.thereby triggering a more favorabl. l.ttice oxygen-participated mechanism(l.M)during the OER *** outcomes of this work provide crucial.insights into the rol. of conformational.entropy strategies in oxygen catal.sis and offer potential.avenues for constructing efficient and stabl. el.ctrocatal.sts.

关键词： Sr(FeCoNiMo)_(1/4)O_(3−δ) Bifunctional.catal.st Medium entropy l.M Rechargeabl. zinc-air batteries

Spark Pl.sma Sintering of Mg-based Al.oys:Microstructure,Mechanical.Properties,Corrosion Behavior,and tribol.gical.Performance

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Journal.of Magnesium and Al.oys 2024年第2期12卷 405-442页

作者： Al.ssandro M.Ral.s Mohammadreza Daroonparvar Pradeep l.Menezes Department of Mechanical.Engineering University of Nevada RenoRenoNV89557United States

Within the past ten years,spark pl.sma sintering(SPS)has become an increasingl. popul.r process for Mg *** the SPS process,interparticl. diffusion of compressed particl.s is rapidl. achieved due to the concept of Joul. *** to traditional.and additive manufacturing(AM)techniques,SPS gives unique control.of the structural.and microstructural.features of Mg *** doing so,their mechanical.tribol.gical.and corrosion properties can be *** great advancements in this fiel. have been made,these pieces of knowl.dge are scattered and have not been contextual.zed into a singl. *** motivation of this work is to address this scientific gap and to provide a groundwork for understanding the basics of SPS manufacturing for *** do so,the existing body of SPS Mg l.terature was first surveyed,with a focus on their structural.formation and degradation *** was found that successful.Mg SPS fabrication highl. depended on the processing temperature,particl. size,and particl. *** addition of metal.and ceramic composites al.o affected their microstructural.features due to the Zener pinning *** degradative environments,their performance depends on their structural.features and whether they have secondary phased *** industrial.appl.cations,SPS'd Mg was found to have great potential.in biomedical.hydrogen storage,battery,automotive,and recycl.ng *** prospects to advance the fiel. incl.de using Mg as a doping agent for crystal.ite size refinement and using bul. metal.ic Mg-based gl.ss powders for amorphous SPS *** these findings,the interactions of mul.i-composites on the processing-structure-property rel.tionships of SPS Mg is not wel. *** total.this work wil. provide a useful.direction in the SPS fiel. and serve as a mil.stone for future Mg-based SPS manufacturing.

关键词： Spark pl.sma sintering Magnesium al.oys Nanocrystal.ine tribol.gy Mechanical.properties Corrosion

Assessment of mol.cul.r markers and marker-assisted sel.ction for drought tol.rance in barl.y(Hordeum vul.are l.)

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Journal.of Integrative Agricul.ure 2024年第1期23卷 20-38页

作者： Akmaral.Baidyussen Gul.ira Khassanova Maral.Utebayev Satyval.y Jatayev Rystay Kushanova Shol.an Khal.ayeva Aigul.Amangel.iyeva Raushan Yerzhebayeva Kul.ashBul.tova Carl. Schramm Peter Anderson Col.n l.D.Jenkins Kathl.en l.ool. Yuri Shavrukov Facul.y of Agronomy S.Seifullin Kazakh AgroTechnical Research UniversityAstana 010000Kazakhstan A.I.Barayev Research and Production Centre of Grain Farming Shortandy 021601Kazakhstan Kazakh Research Institute of Agricul.ure and Pl.nt Growing AlmalybakAlmaty District 040909Kazakhstan Col.ege of Science and Engineering Biological SciencesFlinders UniversityAdelaideSA 5042Australia

this review updates the present status of the fiel. of mol.cul.r markers and marker-assisted sel.ction(MAS),using the exampl. of drought tol.rance in *** accuracy of sel.cted quantitative trait l.ci(Qtl.),candidate genes and suggested markers was assessed in the barl.y genome *** common strategies are described for mol.cul.r marker devel.pment,candidate gene identification and verification,and their possibl. appl.cations in MAS to improve the grain yiel. and yiel. components in barl.y under drought *** strategies are based on the fol.owing five principl.s:(1)Mol.cul.r markers are designated as genomic‘tags’,and their‘prediction’is strongl. dependent on their distance from a candidate gene on genetic or physical.maps;(2)pl.nts react differentl. under favourabl. and stressful.conditions or depending on their stage of devel.pment;(3)each candidate gene must be verified by confirming its expression in the rel.vant conditions,e.g.,drought;(4)the mol.cul.r marker identified must be val.dated for MAS for tol.rance to drought stress and improved grain yiel.;and(5)the smal. number of mol.cul.r markers real.zed for MAS in breeding,from among the many studies targeting candidate genes,can be expl.ined by the compl.x nature of drought stress,and mul.ipl. stress-responsive genes in each barl.y genotype that are expressed differential.y depending on many other factors.

关键词： barl.y candidate genes drought tol.rance gene verification via expression grain yiel. marker-assisted sel.ction(MAS) mol.cul.r markers quantitative trait l.ci(Qtl.) strategy for MAS