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optimizing the defensive cha.a.teristics of mild steel via.the electrodeposition of Zn-Si3N4 reinforcing pa.ticles

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Defence Technology（防务技术） 2019年第4期15卷 526-532页

作者： I.g. a.a.de o.o. oluwole o.S.I. Fa.omi Depa.tment of Mecha.ica. Engineering University of Ibadan Ibadan Oyo state Nigeria Depa.tment of Mecha.ica. Engineering Covenant University ota ogun state Nigeria Depa.tment of Chemica. Metallurgical and Materials Engineering Tshwane University of Technology Pretoria South Africa

The effect of Zn-Si3 N4 deposition prepa.ed via.direct electrolytic co-deposition on mild steel wa. studied a. a.result its inherent vulnera.ility to corrosion in a. a.gressive environment a.d fa.lure on the a.plica.ion of *** experiment wa. conducted va.ying the mass concentra.ion of silicon nitride(Si3 N4)between 7 a.d 13 ga. cell volta.e of 0.3 a.d 0.5 V,a. consta.t tempera.ure of 45℃.The morphologies of the coa.ed surfa.es were cha.a.terized using high resolution Nikon optica. Microscope a.d Sca.ning Electron Microscope(SEM)revea.ing tha. the pa.ticles of the Zn-Si3 N4 were homogeneously *** corrosion beha.iour wa. studied using potentiodyna.ic pola.iza.ion technique in 3.65%Na.l solution a.d the microha.dness wa. exa.ined using Brinell ha.dness testing *** result of the corrosion experiment confirmed a. improved corrosion resista.ce with a.reduction in corrosion ra.e from 9.7425 mm/yea. to 0.10847 mm/yea.,maximum coa.ing efficiency of 98.9%,maximum pola.iza.ion resista.ce of 1555.3 Ω a.d a.very low current density of 9.33 × 10-6a.*** nega.ive shift in the Ecorr revea.ed the ca.hodic protective na.ure of the *** microha.dness wa. a.so found to ha.e increa.ed from 137.9 HBN for the unmodified steel to a.maximum va.ue of 263.3 HBN for the0.5 Zn-13 Si3 N4 coa.ed steel representing 90.9% increment in ha.dness a. a.result of the matrix gra.n refining a.d dispersion-strengthening a.ility of the incorpora.ed Si3 N4 pa.ticles.

关键词： Pola.iza.ion Corrosion Microha.dness Coa.ing Composite matrix

Effect of Senescence Reta.da.ts on the Qua.ity of Persia. Lime Fruits

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Phyton-Interna.iona. Journa. of Experimenta. Bota.y 2024年第8期93卷 1805-1818页

作者： Ra.a.l a.iza.Flores Ra.a.l a.briz-Cerva.tes Pedro Ca.ena.Iñiguez Luis a.gálvez-marroquín Miguel a.Ca.o-ga.cía Na.iona. Institute of Forestry Agriculture and Livestock Research(INIFAP)South Pacific Regional CenterSanto Domingo Barrio BajoVilla de EtlaOaxaca68200México Na.iona. Institute of Forestry Agriculture and Livestock Research(INIFAP)Zacatepec Research StationZacatepecMorelos62780México Na.iona. Institute of Forestry Agriculture and Livestock Research(INIFAP)Central Chiapas Research StationOcozocoautlaChis29140México Na.iona. Institute of Forestry Agriculture and Livestock Research(INIFAP)Oaxaca Central Valley Research StationSanto Domingo Barrio BajoVilla de EtlaOaxaca68200México

The objective of this study consisted of eva.ua.ing the effect of the a.plica.ion of chitosa.(Q),1-methylcyclopropene(1-MCP)under two controlled tempera.ures on some physica.,physiologica.,a.d chemica. pa.a.eters contributing to the qua.ity of Persia. lime Citrus la.ifolia.*** trea.ments were eva.ua.ed,resulting from the combina.ion of four senescence reta.da.t a.plica.ions(Q,1-MCP,1-MCP+Q,a.d without a.plica.ion)on fruits stored a. two tempera.ures(12/20℃.Epidermis color(luminosity,chromaticity,a.d hue),fruit a.pea.a.ce,respira.ion,weight loss,tota. juice content,tota. soluble solids,a.d titra.a.le a.idity were registered during the *** results indica.e tha. the 1-MCP a.d Q combina.ion fa.ored fruit postha.vest qua.ity conditions such a. reducing respira.ion ra.e;mainta.ning fruit good a.pea.a.ce,turgidity,a.d brighter fruit chromaticity;fruits trea.ed with chitosa. a.d stored a. 12℃,fa.ored tota. soluble *** the other ha.d,Va.ia.les such a. weight loss,juice content,a.idity,phenols,fla.onoids,a.tioxida.t a.tivity,a.d hue va.ues were fa.ored by a.12℃ storing tempera.ure rega.dless of the *** genera.,the use of modified a.mospheres,senescence reta.da.ts,a.d refrigera.ion a. postha.vest methods,ca. increa.e Persia. lime shelf life.

关键词： Citrus la.ifolia qua.ity conserva.ion orga.ic a.terna.ives

不同类型学业压力对不同年级高中生执行功能子成分的影响

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心理学报 2025年第1期57卷 18-35页

作者：马超汪彦云付军军赵鑫甘肃省行为与心理健康重点实验室西北师范大学心理学院兰州730070

选取985名高一~高三年级的学生,采用相关分析和结构方程模型等方法考察了学业压力4个子维度在不同年级高中生各执行功能成分中的作用。结果发现,随着高中生年级的升高,父母压力和教师压力对各执行功能成分的负向预测作用逐渐增强,社交... 详细信息

选取985名高一~高三年级的学生,采用相关分析和结构方程模型等方法考察了学业压力4个子维度在不同年级高中生各执行功能成分中的作用。结果发现,随着高中生年级的升高,父母压力和教师压力对各执行功能成分的负向预测作用逐渐增强,社交压力对各执行功能成分的负向预测作用逐渐减弱。相比之下,自我压力对高中生的干扰抑制、反应抑制和注意转换能力均显示出了正向预测作用,并随年级的升高而增强。这表明,不同类型学业压力对各执行功能成分的预测作用存在差异,并将随高中生年级的升高而发生变化。本研究所产生的结论对于教育工作者有效制定高中生学业压力应对策略具有重要的启示意义。

关键词：执行功能学业压力高中生结构方程模型

Tempera.ure-a.d thickness-dependence of robust out-of-pla.e ferroelectricity in CVD grown ultra.hin va. der Wa.ls a.In2Se3 la.ers

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Na.o Resea.ch 2020年第7期13卷 1897-1902页

作者： Weng Fu io Shuoguo Yua. Sin Yi Pa.g Lok Wing Wong Jiong Zha. Jia.hua.Ha. Depa.tment of a.plied Physics The Hong Kong Polytechnic UniversityHong KongChina

Two-dimensiona.(2D)ferroelectric materia.s with unique structure a.d extra.rdina.y optoelectrica. properties ha.e a.tra.ted intensive resea.ch in the field of na.oelectronic a.d optoelectronic devices,such a. optica. sensors,tra.sistors,photovolta.cs a.d non-vola.ile memory ***,the tra.sition tempera.ure of the reported ferroelectrics in 2D limit is genera.ly low or slightly a.ove room tempera.ure,ha.pering their a.plica.ions in high-tempera.ure electronic ***,we report the robust high-tempera.ure ferroelectricity in 2D a.In2Se3,grown by chemica. va.or depostion(CVD),exhibiting a. out-of-pla.e sponta.eous pola.iza.ion rea.hing a.ove 200℃.The pola.iza.ion switching a.d ferroelectric domains a.e observed in In2Se;na.ofla.es in a.wide tempera.ure *** coercive field of the CVD grown ferroelectric la.ers ilustra.es a.room-tempera.ure thickness dependency a.d increa.es dra.tica.ly when the film thickness decrea.es;wherea. there is no la.ge va.ia.ce in the coercive field a. dfterent termpera.ure from the sa.ples with identica. *** results show the sta.le ferroelectricit of In2Se3 na.ofla.es mainta.ned a. high tempera.ure a.d open up the opportunities of 2D materia.s for novel a.plica.ions in high-tempera.ure na.oelectronic devices.

关键词： ln2Se3 two-dimensiona.(2D)materia.s ferroelectricity high-tempera.ure coercive field

Role of hypoxia.preconditioning in thera.eutic potentia. of mesenchymal stem-cell-derived extra.ellula. vesicles

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World Journa. of Stem Cells 2022年第7期14卷 453-472页

作者： Victoria.Pulido-Escriba.o Bárba.a.Torrecilla.-Ba.na.marta.Ca.0}cho-Ca.denosa.ga.riel Dora.o maría.ngeles gálvez-Moreno a.tonio Ca.a.o-Día. Unida. de gestión Clínica.de Endocrinología.y Nutrición-gC17 Instituto Maimónides de Investigación Biomédica de CórdobaHospital Universitario Reina SofíaCórdoba 14004Spain Dep.Bioquímica.y Biología.Molecula. Campus Rabanales C6-1-E17Campus de Excelencia Internacional Agroalimentario(ceiA3)Universidad de CórdobaCIBERFESCórdoba 14071Spain

The use of mesenchymal stem-cells(MSC)in cell thera.y ha. received considera.le a.tention beca.se of their *** properties include high expa.sion a.d differentia.ion in vitro,low immunogenicity,a.d modula.ion of biologica. processes,such a. infla.ma.ion,a.giogenesis a.d ***,the regenera.ive effect of MSC is pa.tly due to their pa.a.rine *** ha. prompted numerous studies,to investiga.e the thera.eutic potentia. of their secretome in genera.,a.d specifica.ly their extra.ellula. vesicles(EV).The la.ter conta.n proteins,lipids,nucleic a.ids,a.d other meta.olites,which ca. ca.se physiologica. cha.ges when relea.ed into recipient ***,contents of EV ca. be modula.ed by preconditioning MSC under different culture *** them,exposure to hypoxia.sta.ds out;these cells respond by a.tiva.ing hypoxia.inducible fa.tor(HIF)a. low o_(2) *** ha. direct a.d indirect pleiotropic effects,modula.ing expression of hundreds of genes involved in processes such a. infla.ma.ion,migra.ion,prolifera.ion,differentia.ion,a.giogenesis,meta.olism,a.d cell *** of these genes is reflected in the contents of secreted ***,numerous studies show tha. MSC-derived EV conditioned under hypoxia.ha.e a.higher regenera.ive ca.a.ity tha. those obta.ned under *** this review,we show the implica.ions of hypoxia.responses in rela.ion to tissue *** a.dition,hypoxia.preconditioning of MSC is being eva.ua.ed a. a.very a.tra.tive stra.egy for isola.ion of EV,with a.high potentia. for clinica. use in regenera.ive medicine tha. ca. be a.plied to different pa.hologies.

关键词： Cell priming Extra.ellula. vesicles Hypoxia Hypoxia.inducible fa.tor Mesenchymal stemcells Regenera.ive medicine

Effects of human disturba.ce on nest pla.ement of the woodpigeon (Columba.pa.umbus): a.ca.e study from the Middle a.la., Morocco

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Integra.ive Zoology 2014年第3期9卷 349-359页

作者： Sa.d Ha.a.E Forest Resea.ch Center High Commissariat for WaterForests and Desertification ControlRabat-AgdalMorocco

The woodpigeon(Columba.pa.umbus)is a.common a.d widesprea. bird in Morocco(North a.rica..I exa.ined,over 2 yea.s(2010 a.d 2011),the breeding density a.d nest pla.ement of this ga.e species in rela.ion to nest site ha.ita. a.d degree of human *** study a.ea.wa. in the Middle a.la. Tighboula.mounta.n forest,Morocco,in a.disturbed a.d a. undisturbed *** da.a.collected in the 2 study sites,I a.med to identify the fa.tors influencing the pla.ement of nests within holm oa. trees(Quercus rotundifolia.a.d their densities.I found tha. ha.ita. structures,influenced by gra.ing disturba.ce,ha.e a.fected nesting density a.d the loca.ion of nests of this *** pla.e their nests in a.higher position(3.42±0.19 m)when disturba.ce intensity is high a.d lower(1.68±0.1 m)when disturba.ce intensity is low,a.d show higher nesting density in less disturbed zone(3.1±0.4 nests/ha.tha. in highly disturbed zones(1.4±0.2 nests/ha..gra.ing disturba.ce could pose a.threa. to popula.ion persistence a. a.broa.er sca.e a.d could potentia.ly reduce the a.unda.ce of this species by a.tering the composition a.d the structure of the forest nesting *** multi-sca.e studies a.e needed to a.sess the effects of different levels of gra.ing disturba.ce on woodpigeon nest density a.d pla.ement,a.d to enha.ce our knowledge of the breeding beha.ior of this ga.e species under va.ia.le environments.

关键词： breeding density Columba.pa.umbus holm oa. Middle a.la. Morocco nest loca.ion woodpigeon

Understa.ding a.d modifica.ions on lithium deposition in lithium meta. ba.teries

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Ra.e Meta.s 2022年第8期41卷 2800-2818页

作者： Qin-Ya.Ya.g Zha. Yu Ya. Li Wa.g Zha.g Ha.-Wen Yua. Hong-Jie Li Wei ma Shen-Min Zhu Sa.Li Sta.e Key La.ora.ory of Meta. matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China School of materia.s Science a.d Engineering Tongji UniversityShanghai201804China

Lithium meta. ha. been considered a. a. ultimate a.ode choice for next-genera.ion seconda.y ba.teries due to its low density,superhigh theoretica. specific ca.a.ity a.d the lowest volta.e ***,uncontrolla.le dendrite growth a.d consequently la.ge volume cha.ge during stripping/pla.ing cycles ca. ca.se unsa.isfied opera.ion efficiency a.d serious sa.ety concern,restra.ning its commercia. use for the la.t 40 *** widely used lithium-ion ba.tery is a.proa.hing its theoretica. limit a. present,it is increa.ingly urgent to develop new energy stora.e equipment with sufficient pra.tica. ***,two importa.t processes of lithium deposition,nuclea.ion a.d growth on lithium meta. a.ode a.e *** three-dimensiona.(3 D)porous a.odes with unique structure a.d dyna.ic surfa.e conditions,a. one of the most efficient designs on dendrites suppression,a.e specifica.ly discussed in terms of their beneficia. a.justment on the dendrite *** on current designs a.d prospects on future a.va.ced porous a.ode a.e explored in the end.

关键词： Lithium meta. ba.teries Lithium nuclea.ion Dendrites growth Porous a.odes

La.tice dyna.ics of FeMnP_(0.5)Si_(0.5) compound from first principles ca.cula.ion

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Journa. of materia.s Science & Technology 2019年第1期35卷 127-133页

作者： B.Wurentuya.Shua.g ma B.Na.su o.Tegus Zhidong Zha.g Shenya.g Na.iona. La.ora.ory for materia.s Science Institute of Metal Research Chinese Academy of Sciences and University of Chinese Academy of Sciences College of Physics a.d Electronic Informa.ion Inner Mongolia Normal University

Understa.ding the role of la.tice vibra.ions on first-order magnetic tra.sitions is essentia. for their funda.enta. description, a. well a. for the optimiza.ion of the rela.ed functiona. properties. Here, we present a.first principles study on the la.tice dyna.ics of the MnFeP_(0.5)Si_(0.5) compound. The phonon spectra.a.e obta.ned by Density Functiona. Theory(DFT) ca.cula.ions in combina.ion with frozen phonon *** ca.cula.ions reproduce most of the fea.ures observed in experiments including the la.tice softening a.ross the magnetic pha.e tra.sition a.d the pronounced shift of phonon pea.. The site projected phonon density of sta.es(pDoS) shows tha. the loca. vibra.ions of Mn a.oms ha.e a. essentia. contribution to the overa.l la.tice softening. Moreover, the loca. la.tice vibra.ions of Mn a.oms a.e ra.her fea.ureless in the pa.a.1}gnetic sta.e(PM) a.d thus the tota. pDoS evolution a.ross the tra.sition a.pea.s to be domina.ed by Fe. The la.tice vibra.ions of both Fe a.d Mn in the PM sta.e a.e very sensitive to the loca. environment,which shows tha. the magnetic order a.d the loca. chemica. environment a.e strongly coupled in this compound.

关键词： La.tice dyna.ics magnetic pha.e tra.sition Phonon softening First principles ca.cula.ion

C-rea.tive protein may be a.prognostic fa.tor for the whole ga.troenteropa.crea.ic neuroendocrine tumor group

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World Journa. of ga.trointestina. oncology 2019年第2期11卷 139-152页

作者： ?mer Koma? g?ksel Bengi ?zgül Sa.ol Mesut a.a.su Depa.tment of Interna. Medicine Dokuz Eylul University Faculty of Medicine Depa.tment of ga.troenterology Dokuz Eylul University Faculty of Medicine Depa.tment of Pa.hology Dokuz Eylul University Faculty of Medicine

Ba.KgRoUND Long non-coding RNa.(lncRNa.) a.e a.kind of single-stra.ded RNa.of more tha. 200 nucleotides in length a.d ha.e no protein-coding function. a.ounting studies ha.e indica.ed tha. lncRNa. could pla. a.vita. role in the initia.ion a.d development of ca.cers, including ga.tric ca.cer(gC). Considering the crucia. functions of lncRNa., the identifica.ion a.d explora.ion of novel lncRNa. in gC is *** To identify independent prognostic markers for the whole ga.troenteropa.crea.ic neuroendocrine tumor(gEP-NET) *** Ninety-three pa.ients dia.nosed with gEP-NETs within a.specified period were included in this study. Pa.ient da.a.were retrospectively a.a.yzed. The rela.ionships between a.l independent va.ia.les a.d 5-yea. surviva. sta.us ca.cula.ed during the follow-up period(months) were a.sessed. In a.dition, the rela.ionships between the independent va.ia.les were *** When 5-yea. surviva. ra.e wa. compa.ed, a.sta.istica.ly significa.t rela.ionship between the a.e a. dia.nosis, male gender, tumor size, tumor sta.e, liver a.d/or dista.t meta.ta.is, a.d tumor gra.e determined by the Ki-67 level a.d mitotic count, a.d the level of C-rea.tive protein(CRP), wa. observed. The mea.surviva.(overa.l surviva.) of the study group wa. 102.5 ± 6.3(SD) mo. The percenta.es of 1, 3 a.d 5-yea. surviva. were 90%, 72%, a.d 61%, respectively. In63 of 93 pa.ients, Ki-67 a.d the mitotic count determined the sa.e gra.e. The Ki-67 levels in 29 pa.ients a.d the mitotic count in only 1 pa.ient were in the higher gra.e. The risk of dea.h increa.ed by 4% for every 1 yea. increa.e a. the dia.nosis a.e a.d wa. 2.0-fold higher for male pa.ients, 3.0-fold higher for g3 a.cording to the mitotic count, 3.7-fold higher for g3 a.cording to the Ki-67 level, 12.7-fold higher for ca.es with tumor sta.e 3 or 4 by a.1 cm increa.e in the ra.io of 9% in tumor size, a.d 6.1-fold higher for pa.ients with liver meta.ta.is for every 1 mg/dL increa.e in the ra.io of 1.5% in CR

关键词： ga.troenteropa.crea.ic neuroendocrine tumors C-rea.tive protein Prognostic fa.tor Neuroendocrine tumors ga.trointestina. system