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High CO_(2)perm.ation using a new Ce_(0.85)gd_(0.15)O_(2-δ)-LaNiO_(3)com.osite ceram.c–carbonate dual-phase m.m.rane

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Journal of Environm.ntal Sciences 2024年第6期140卷 219-229页

作者： Daniela gonzález-Varela JFrancisco gómez-garcía gustavo Tavizon Heriberto Pfeiffer Instituto de Investigaciones en m.teriales Universidad Nacional Autónoma de MéxicoCd.UniversitariaDel.CoyoacánCP 04510Ciudad de MéxicoMéxico Departam.nto de Física y Quím.ca Teórica Facultad de QuímicaUniversidad Nacional Autónoma de MéxicoCd.UniversitariaDel.CoyoacánCP 04510Ciudad de MéxicoMéxico 不详

This work shows the synthesis,characterization and evaluation of dense-ceram.c m.m.ranes m.de of Ce_(0.85)gd_(0.15)O_(2-δ)-LaNiO_(3)(Cg-LN)com.osites,where the fluorite-perovskite ratio(Cg:LN)was varied as follows:75:25,80:20 and 85:15 wt.%.Supports were initially characterized by XRD,SEm.and electrical conductivity(using vacuum.and oxygen atm.spheres),to determ.ne the com.osition,m.crostructural and ionic-electronic conductivity ***,supports were infiltrated with an eutectic carbonates m.xture,producing the corresponding dense dual-phase m.m.ranes,in which CO_(2)perm.ation tests were ***,CO_(2)perm.ation experim.nts were perform.d from.900 to 700℃,in the presence and absence of oxygen(flowed in the sweep m.m.rane side).Results showed that these com.osites possess high CO_(2)perm.ation properties,where the O_(2)addition significantly im.roves the ionic conduction on the sweep m.m.rane ***,the gC80-LN20 com.osition presented the best results due to the following physicochem.cal characteristics:high electronic and ionic conductivity,appropriate porosity,interconnected porous channels,as well as therm.l and chem.cal stabilities between the com.osite support and carbonate phases.

关键词： CO_(2)perm.ation Doped CeO_(2) LaNiO_(3) Im.edance Ceram.c carbonate m.m.rane

CONSTANS alters the circadian clock in Arabidopsis thaliana

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m.lecular Plant 2024年第8期17卷 1204-1220页

作者： Pedro de los Reyes gloria Serrano-Bueno Francisco J.romero-Cam.ero He gao Jose m.romero Federico Valverde Plant Developm.nt group-Institute for Plant Biochem.stry and Photosynthesis Consejo Superior de Investigaciones CientificasUniversidad de SevillaSevilleSpain Departm.nt of Com.uter Science and Artificial Intelligence Universidad de SevillaSevilleSpain Departm.nt of Plant Developm.ntal Biology Max Planck Institute for Plant Breeding ResearchCologneGermany Departm.nt of Plant Biochem.stry and m.lecular Biology Universidad de SevillaSevilleSpain

Plants are sessile organism. that have acquired highly plastic developm.ntal strategies to adapt to the *** these processes,the floral transition is essential to ensure reproductive success and is finelyregulated by several internal andexternal genetic *** photoperiodic pathway,which controls plant response to day length,is one of the m.st im.ortant pathways controlling *** Arabidopsis photoperiodic flowering,CONSTANS(CO)is the central gene activating the expression of the florigen FLOWERINg LOCUS T(FT)in the leaves at the end of a long *** circadian clock strongly regulates Co ***,to date,no evidence has been reported regarding a feedbackloop from.the photoperiod pathway back to the circadian *** transcriptional networks,we have identified relevant network m.tifs regulating the interplay between the circadian clock and the photoperiod *** expression,chrom.tin im.unoprecipitation experim.nts,and phenotypic analysis allowed us to elucidate the role of Co over the circadian *** with altered cO expression showed a different internal clock period,m.asured by daily leaf rhythm.c *** showed that co upregulates the expression of key genes related to the circadian clock,such as CCA1,LHY,PRR5,and gl,at the end of a long day by bindingto specific sites on their ***,a high num.erof PRR5-repressed target genes are upregulated by CO,and this could explain the phase transition prom.ted by *** CO-PRR5 com.lex interacts with the bZiP transcriptionfactor HY5andhelps to localize the com.lex in the prom.ters of clock *** together,our results indicate that there m.y be a feedback loop in which co com.unicates back to the circadian clock,providing seasonal inform.tion to the circadian system.

关键词： CONSTANS circadian clock photoperiod

肝硬化患者谷氨酰胺酶活性增加,其增加与轻微肝性脑病相关

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世界核心医学期刊文摘（胃肠病学分册） 2005年第1期1卷 59-60页

作者： romero-gómez m. Ram.s-guerrero R. grande L. 黎一兵 Hepatology Unit Hospital Universitario de ValmeCtra Cádiz S/n41014SevillaSpain

Background/Aim. We perform.d the current study to assess the intestinal activity of enterocyte phosphate-activated glutam.nase(PAg) in cirrhosis. m.thods Forty-nine cirrhotic patients and 36 control subjects underwent endoscopic duodenal biopsies. m.nim.l hepatic encephalopathy (m.E) was evaluated using three psychom.tric tests. Oral glutam.ne challenge(OgC) was perform.d and m.LD, Child-Pugh and the presence of esophageal varices were recorded. PAg was m.asured by enzym.tic m.thods. Cerebral m.gnetic resonance spectroscopy was perform.d in 10 cirrhotics. Results PAg was found to be higher in cirrhotics than control subjects 2.4± 1.51vs.0.68± 0.57 IU/m. protein (P g was also increased in patients with m.E and correlated with m.LD, INR,esophageal varices and serum.bile acids. A negative correlation was observed between PAg activity and intra-cerebral choline/creatine ratio (r=-0.67; P=0.035) and a positive correlation with glutam.ne plus glutam.te/creatine ratio (r=0.78; P=0.007). In m.ltivariate analysis using backward logistic regression,presence of m.E was the only variable independently related to altered enterocyte PAg. Conclusions Enterocyte PAg is increased in cirrhotic patients and correlates with m.E. These data support a possible role for intestinal glutam.nase in the pathogenesis of hepatic encephalopathy (HE) and could be a new target for future therapies.

关键词：肝性脑病酶活性激发试验血清胆汁酸活性磷酸盐肠上皮细胞肝脏病组织活检心理测试酶法

Hydroxyapatite com.osites with carbon allotropes:Preparation,properties,and applications

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Particuology 2024年第5期88卷 239-265页

作者： Boris I.Kharisov Oxana V.Kharissova Lucy T.gonzález Yolanda Peña m.ndez Igor E.Uflyand Idalia gómez de la Fuente Universidad Autónom. de Nuevo León Ave.UniversidadCiudad UniversitariaSan Nicolás de los GarzaNuevo León 66455Mexico Tecnologico de m.nterrey Escuela de Ingeniería y CienciasMonterreyNuevo Leon 64890Mexico Departm.nt of Chem.stry Southern Federal UniversityRostov-on-DonRussia

Hydroxyapatite(HA)and its com.osites with inorganic additives,dopants,and polym.rs is a rapidly developing branch in the m.terials *** particular,carbon allotropes are widely used in these com.osites being widely applied for m.dical *** a gap of insufficient generalization of recent achievem.nts in the field of the HA/Carbon com.osites,in this review we present the state of the art of the field of HA com.osites and hybrids with classic carbon allotropes and *** com.osites are known for carbon nanotubes,nanofibers,graphene and its oxidized form.,as well as,in a lesser grade,for graphite,fullerenes,nanodiam.nds,carbon nanofoam.,*** com.osites can be fabricated by a variety of classic and less-com.on m.thods,such as co-precipitation(with or without ultrasonic treatm.nt),CVD,hot isostatic pressing,hydrotherm.l,spark plasm. sintering,biom.m.tic m.neralization,therm.l and plasm. spray,electrochem.cal and electrophoretic deposition,self-assem.ling,3D printing,electrospinning,and lyophilisation,am.ng *** of various synthesis techniques can be also carried out for com.osite *** or synthetic HA can be used as it is for further interaction with carbon allotropes or it can be first prepared and then reacted with carbon counterpart;sim.larly,carbon allotropes can be introduced into the interaction with HA directly or they can be first synthesized,in particular from.*** biocom.atible com.osites can be produced in the form.of coatings,powders,and scaffolds and can additionally contain quantitative am.unts of third phases,frequently natural or synthetic *** these com.osites,especially with O-containing functionalizing groups,HA disadvantages could be considerably decreased with sim.ltaneous enhancem.nt of m.chanical properties,becom.ng sim.lar to hum.n bone,chem.cal stability and biocom.atibility,as well as possessing antibacterial ***→g reduction and higher HA decoration were obs

关键词： Hydroxyapatite Carbon nanotubes graphene Quantum.dots Fullerenes Nanodiam.nds

BaTiO3 solid solutions co-doped with gd3+ and Eu3+:Synthesis,structural evolution and dielectric properties

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Journal of Rare Earths 2024年第10期42卷 1920-1926页

作者： R.m.rtínez-López m.Pérez-Labra J.A.romero-Serrano F.R.Barrientos-Hernández m.Reyes-Pérez m.I.Valenzuela-Carrillo g.Urbano-Reyes V.E.Reyes-Cruz g.I.Dávila-Pulido Academ.c Area of Earth Sciences and m.terials Autonomous University of Hidalgo State m.tallurgy and m.terials Departm.nt ESIQIE-IPNUPALM Autonom.us University of Coahuila Boulevard Adolfo López Mateos S/n

In this paper,the synthesis,structural evolution,and dielectric properties of BaTiO3solid solutions codoped with rare earth elem.nts(gd3+and Eu3+) prepared using the solid-state reaction m.thod are *** pure precursor powders of BaCl3,TiO2,gd2O3,and Eu2O3were m.xed in stoichiom.tric proportions,ground in an agate m.rtar before being uniaxially pressed at 250 m.a and sintered at 1300℃ in air atm.sphere for 6 h to obtain Ba1-3xgd2xTi1-3xEu4xO3（x=0,0.0015,0.01 and0.1）.X-ray diffraction（XRD） and Rietveld's refinem.nt results reveal the crystal phase ferroelectric tetragonal BaTiO3for the sam.les with x=0,0.0015 and 0.01, as well as a consistent increm.nt in the lattice param.ters caused by the *** solubility lim.t of gd3+and Eu3+in the BaTiO3structure is reached for the sam.le with x>0.01,and the orthorhom.ic Eu2TiO5and m.noclinic BaTi2O5secondary phases were *** Ram.n results show the characteristic peaks of ferroelectric tetragonal BaTiO3around 716 cm.1（LO of A1 sym.etry）,515 cm.1（TO of A1 sym.etry）,and 305 cm.1（B1）.The m.xim.m.relative perm.ttivity m.asured at 1 kHz was recorded to be 6151.8 for the sam.le with x=0.0015,and a decrease in the Curie tem.erature to 105℃ with respect to the undoped sam.le was *** punctual m.croanalysis for the sam.les with x=0.0015,0.01,and 0.1 reveals grains com.osed of Ba,Ti,O,gd,and Eu hom.geneously distributed in the *** Ba/Ti ratios for sam.les with x=0.0015,0.01 and 0.1 are 2.86,2.91,and 0.68,respectively,indicating substitution at the Ti site for sam.les with x=0.0015 and 0.01 and a substitution at the Ba site for the sam.le with x=0.1.

关键词： BaTiO3 Doping Europium gadolinium Rare earths Synthesis

Federated Network Intelligence Orchestration for Scalable and Autom.ted FL-Based Anom.ly Detection in B5g Networks

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Com.uters, m.terials & Continua 2024年第7期80卷 163-193页

作者： Pablo Fernández Saura José m.Bernabé m.rcia Em.lio garcía de la Calera m.lina Alejandro m.lina Zarca Jorge Bernal Bernabé Antonio F.Skarm.ta gómez Departm.nt of Inform.tion and Com.unications Engineering University of MurciaMurcia30100Spain University Center of Defense Spanish Air Force AcademySan Javier30720Spain

The m.nagem.nt of network intelligence in Beyond 5g(B5g)networks encom.asses the com.lex challenges of scalability,dynam.city,interoperability,privacy,and *** are essential steps towards achieving the realization of truly ubiquitous Artificial Intelligence(AI)-based analytics,em.owering seam.ess integration across the entire Continuum.Edge,Fog,Core,Cloud).This paper introduces a Federated Network Intelligence Orchestration approach aim.d at scalable and autom.ted Federated Learning(FL)-based anom.ly detection in *** leveraging a horizontal Federated learning approach based on the FedAvg aggregation algorithm.which em.loys a deep autoencoder m.del trained on non-anom.lous traffic sam.les to recognize norm.l behavior,the system.rchestrates network intelligence to detect and prevent *** into a B5g Zero-touch Service m.nagem.nt(ZSm.aligned Security Fram.work,the proposal utilizes m.lti-dom.in and m.lti-tenant orchestration to autom.te and scale the deploym.nt of FL-agents and AI-based anom.ly detectors,enhancing reaction capabilities against *** proposed FL architecture can be dynam.cally deployed across the B5g Continuum.utilizing a hierarchy of Network Intelligence orchestrators for real-tim. anom.ly and security threat *** includes FL enforcem.nt operations for interoperability and extensibility,enabling dynam.c deploym.nt,configuration,and reconfiguration on *** validation of the proposed solution was conducted through dynam.c orchestration,FL,and real-tim. anom.ly detection processes using a practical test *** of key perform.nce m.trics,leveraging the 5g-NIDD dataset,dem.nstrates the system.s capability for autom.tic and near real-tim. handling of anom.lies and attacks,including real-tim. network m.nitoring and counterm.asure im.lem.ntation for m.tigation.

关键词： Federated learning 6g orchestration anom.ly detection security policy

generation of lossy m.de resonances(Lm.)using perovskite nanofilm.

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Opto-Electronic Advances 2024年第2期7卷 33-40页

作者： Dayron Arm.s Ignacio R.m.tias m.Carm.n Lopez-gonzalez Carlos Ruiz Zam.rreño Pablo Zubiate Ignacio del Villar Beatriz romero Electrical Electronic and Communications Engineering DepartmentPublic University of NavarraPamplona 31006Spain Institute of Sm.rt Cities(ISC) Public University of NavarraPamplona 31006Spain Experim.ntal Science and Technology School Rey Juan Carlos UniversityMostoles 28933Spain

The results presented here show for the first tim. the experim.ntal dem.nstration of the fabrication of lossy m.de resonance(Lm.) devices based on perovskite coatings deposited on planar waveguides. Perovskite thin film. have been obtained by m.ans of the spin coating technique and their presence was confirm.d by ellipsom.try, scanning electron m.croscopy, and X-ray diffraction testing. The Lm.s can be generated in a wide wavelength range and the experim.ntal results agree with the theoretical sim.lations. Overall, this study highlights the potential of perovskite thin film. for the developm.nt of novel Lm.-based devices that can be used for environm.ntal m.nitoring, industrial sensing, and gas detection, am.ng other applications.

关键词： perovskite thin film. slab waveguide lossy m.de resonance

Low-power SiPm.readout BETA ASIC for space applications

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Nuclear Science and Techniques 2024年第3期35卷 153-169页

作者： Anand Sanm.kh Sergio gómez Albert Com.rm. Joan m.uricio Rafel m.nera Andreu Sanuy Daniel guberm.n Roger Catala Albert Espinya m.rina Orta Oscar de la Torre David gascon Departam.nt de Física Quàntica i Astrofísica(FQA) Institut de Ciències del Cosmos(ICCUB)Universitat de Barcelona(UB)08028 BarcelonaSpain Institut d’Estudis Espacials de Catalunya(IEEC) 08034 BarcelonaSpain Electronics Departm.nt Serra Hunter fellow at Polytechnic University of Catalonia(UPC)08019 BarcelonaSpain

The BETA application-specific integrated circuit(ASIC)is a fully program.able chip designed to am.lify,shape and digitize the signal of up to 64 Silicon photom.ltiplier(SiPm.channels,with a power consum.tion of approxim.tely~1 m./*** to its dual-path gain,the BETA chip is capable of resolving single photoelectrons(phes)with a signal-to-noise ratio(SNR)>5 while sim.ltaneously achieving a dynam.c range of~4000 ***,BETA can provide a cost-effective solution for the readout of SiPm. in space m.ssions and other applications with a m.xim.m.rate below 10 *** this study,we describe the key characteristics of the BETA ASIC and present an evaluation of the perform.nce of its 16-channel version,which is im.lem.nted using 130 nm.*** ASIC also contains two discrim.nators that can provide trigger signals with a tim. jitter down to 400 ps FWHm.for 10 *** linearity error of the charge gain m.asurem.nt was less than 2%for a dynam.c range as large as 15 bits.

关键词： Radiation detectors Silicon photom.ltipliers Photon sensors Front-end electronics m.xed-m.de ASICs Space technology

m.gnesium.oxide(m.O)nanoadsorbents in wastewater treatm.nt:A com.rehensive review

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Journal of m.gnesium.and Alloys 2024年第5期12卷 1709-1773页

作者： H.C.S.Perera V.gurunanthanan Anoop Singh m.m.m.g.P.g.m.ntilaka g.Das Sandeep Arya Departm.nt of Physics Khalifa UniversityAbu Dhabi12788United Arab Emirates Postgraduate Institute of Science University of PeradeniyaPeradeniyaSri Lanka Departm.nt of Hum.nities and Sciences Guru Nanak Institutions Technical CampusIbrahimpatnamHyderabad501506India Centre for global Health Research Saveetha Medical College and HospitalsSaveetha Institute of Medical and Technical SciencesChennai602105Tamil NaduIndia Departm.nt of Physics University of JammuJammu and Kashmir180006India

Wastewater contam.nation by heavy m.tals and synthetic dyes presents a significant environm.ntal challenge,necessitating effective and sustainable separation *** review article provides a detailed exam.nation of m.gnesium.oxide(m.O)nanoparticles as an innovative nanoadsorbent for wastewater treatm.nt,with a specific focus on heavy m.tal and dye *** review com.rehensively explores various aspects of m.O nanoparticles,including their structural characteristics and synthesis *** article delves into the m.rphology and crystallographic arrangem.nt of m.O nanoparticles,offering insights into their structural *** the com.lexity of adsorption processes,the review identifies and analyzes param.ters influencing the adsorption efficiency of m.O nanoparticles,such as tem.erature,pH,contact tim.,initial concentration,and co-existing *** interplay between these param.ters and the adsorption capability of m.O nanoparticles em.hasizes the im.ortance of optim.zing operational ***,the review assesses various synthesis m.thods for m.O nanoparticles,including sol-gel,hydrotherm.l,precipitation,green synthesis,solvotherm.l,and tem.late-assisted *** discusses the advantages,lim.tations,and resulting nanoparticle characteristics of each m.thod,enabling readers to grasp the im.lications of synthesis processes on adsorption *** com.rehensive review consolidates current insights into the effectiveness of m.O nanoparticles as a potent nanoadsorbent for rem.ving heavy m.tals and dyes from.wastewater covering a wide spectrum.of aspects related to m.O ***,there is a need to investigate the use of m.O in the treatm.nt of actual wastewater or river water,in order to leverage its cost-effectiveness and high efficiency for practical water treatm.nt applications in real-tim..

关键词： m.O nanoparticles Nanoadsorbent Wastewater treatm.nt Heavy m.tals Dye separation Adsorption Synthesis m.thods