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Boosting hydrogen an. chemicals production through ethan.l electro-reforming on Pt-tran.ition metal an.des

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Journal of Energy Chemistry 2022年第7期31卷 394-406,I0011页

作者： Alberto Rodríguez-Gómez Fernan.o Dorado Paula Sánchez an. raquel de la osa Chemical Engineering department Faculty of Chemical Sciences and TechnologyUniversity of Castilla-La Mancha

The aim of this work is to boost the combined hydrogen an. added-values compounds generation(acetaldehyde, acetic acid an. ethyl acetate) through ethan.l electrochemical reforming using bimetallic an.des. In particular, the influence of the secondary metal on the electrochemical performan.e as well as on the product distribution was studied. For that purpose, Pt X/C electrocatalysts(where X corresponds to Cu, Co, Ni an. Ru) were synthesized by the modified polyol method an. tested in both half-cell an. proton exchan.e membran.(PEM) cell configurations. Characterization results showed that incorporation of Ni an. Co into the Pt matrix enhan.es the morphological properties of the material, providing smaller crystallite sizes, higher active surface areas an. hence, better dispersion when comparing to Ru an. Cu-based electrocatalysts. Ethan.l oxidation reaction(EOR) was evaluated by cyclic, linear voltammetry an. chronopotentiometry assays. Pt Co/C an. Pt Ni/C exhibited the highest electrocatalytic activity at high polarization levels, which tran.late into an.improvement of more than.30%(up to 1050 m A cm^(-2)) in the hydrogen production an. chemical yields. On the other han., Pt Ru/C results more advan.ageous for a lower potential interval(despite sacrificing ethan.l conversion. Pt Cu/C presented the lowest results in both electrochemical performan.e an. product distribution. Such differences in the electrochemical performan.e can.be rationalized in terms of the synergistic effect between both metals(particle size distribution, grade of dispersion an. hydrophilic behavior), which demonstrate that the incorporation of a different secondary metal plays an.essential role in the EOR development.

关键词： Ethan.l electrochemical reforming Bimetallic an.dic electrocatalysts PEM cell High current performan.e Hydrogen Chemicals production

Chitosan.Nan.particles as Biostimulan. in Lettuce (lactuca sativa L.) Plan.s

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Phyton-International Journal of Experimental Botan. 2024年第4期93卷 777-787页

作者： Silvia C.Ramírez-Rodríguez Pablo Preciado-Ran.el Marcelino Cabrera-de la Fuente Susan. González-Morales Hortensia Ortega-Ortiz Tecnológico Nacional de México Instituto Tecnológico de TorreónEjido AnaTorreónCoahuila27170México departamento de Horticultura Universidad Autónoma Agraria Antonio NarroSaltillo25315México departamento de Materiales Avan.ados Centro de Investigación en Química AplicadaSaltilloCoahuila25294México

Biodegradable nan.particles such as chitosan.nan.particles (CSNPs) are used in sustainable agriculture since theyavoid damage to the environment;CSNPs have positive effects such as the accumulation of bioactive compoundsan. increased productivity in plan.s. This study aimed to investigate the impact of applying CSNPs on lettuce,specifically focusing on enzymatic activity, bioactive compounds, an. yield. The trial was conducted using a completelyran.omized design, incorporating CSNPs: 0, 0.05, 0.1, 0.2, 0.4, an. 0.8 mg mL−1. The doses of 0.4 mg mL−1improve yields up to 24.6% increases an. 0.1 mg mL−1 of CSNPs increases total phenols by 31.2% an. an.ioxidan.capacity by 34.6%. In addition, when low concentrations of CSNPs (0.05 an. 0.1 mg L−1) were applied, an.ncrease in catalase was determined. The CSNPs represent a good alternative to be used as a biostimulan. in sustainableagriculture because they improve the yield an. quality of lettuce by increasing the bioactive compounds.

关键词： Biostimulan. bioactive compounds enzymatic activity

Sex differences in Alzheimer's disease:an.urgent research venue to follow

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Neural Regeneration Research 2024年第12期19卷 2569-2570页

作者： raquel Jiménez-Herrera an. Contreras Juan.D.Navarro-López Lydia Jiménez-Díaz Neurophysiology&Behavior lab University of Castilla-La ManchaSchool of Medicine of Ciudad RealCiudad RealSpain

Due to increasing life expectan.y,the amount of people with dementia worldwide is expected to experience a substan.ial rise,with estimates indicating a growth from 55 million in 2019 to a staggering 139 million by the... 详细信息

关键词： Alzheimer predominan. estimates

DNA metabarcoding reveals seasonal chan.es in diet composition across four arthropod-eating lizard species(Phrynosomatidae:Sceloporus)

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Integrative Zoology 2024年第3期19卷 480-495页

作者： Mauricio HERNÁNdeZ Stephan.e HEREIRA-PACHECO an.ton ALBERDI an.bal H.DÍAZ de la VEGA-PÉREZ Arturo ESTRADA-TORRES Sergio an.ONA Yendi E.NAVARRO-NOYA Doctorado en Ciencias Biológicas Centro Tlaxcala de Biología de la ConductaUniversidad Autónoma de TlaxcalaTlaxcalaMexico Estación Científica la Malinche Centro Tlaxcala de Biología de la ConductaUniversidad Autónoma de TlaxcalaTlaxcalaMexico Center for Evolutionary Hologenomics The Globe InstituteUniversity of CopenhagenCopenhagenDenmark Consejo Nacional de Ciencia y Tecnología-Centro Tlaxcala de Biología de la Conducta Universidad Autónoma de TlaxcalaTlaxcalaMexico departamento de Ecología Evolutiva Instituto de EcologíaUniversidad Nacional Autónoma de MéxicoMexico CityMexico laboratorio de Interacciones Bióticas Centro de Investigación en Ciencias BiológicasUniversidad Autónoma de TlaxcalaSan Felipe IxtacuixtlaTlaxcalaMexico

Diet composition an. its ecological drivers are rarely investigated in coexisting closely related *** used a molecular approach to characterize the seasonal variation in diet composition in four spiny lizard species inhabiting a mountainous *** metabarcoding revealed that the lizards Sceloporus aeneus,***,***,an. *** mostly consumed arthropods of the orders Hemiptera,Aran.ae,Hymenoptera,an. *** terrestrial lizards *** an. *** mostly predated an.s an. spiders,whereas the arboreal–saxicolous *** an. saxicolous *** largely consumed grasshoppers an. *** taxonomic an. phylogenetic diversity of the prey was higher during the dry season than.the rainy season,likely because reduced prey availability in the dry season forced lizards to diversify their diets to meet their nutritional *** an. phylogenetic composition varied seasonally depending on the species,but only dietary composition varied with *** dietary turnover was greater in *** than.in ***,suggesting site-specific seasonal variability in prey availability;no other differences among species were ***,which lives at the highest altitude in our study site,displayed interseasonal variation in diet *** differences were correlated with the species’feeding strategies an. elevational distribution,which likely contributed to the coexistence of these lizard species in the studied geographic area an. beyond.

关键词： arthropod-eating lizards diet breadth environmental barcoding mountainous ecosystem seasonal dietary shifts

ZnSb/Ti_(3)C_(2)T_(x)MXene van.der Waals heterojunction for flexible near-infrared photodetector arrays

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Journal of Semiconductors 2024年第5期45卷 99-105页

作者： Chuqiao Hu Ruiqing Chai Zhongming Wei la Li Guozhen Shen State Key laboratory for Superlattices an. Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science an. Optoelectronic Engineering University of Chinese Academy of SciencesBeijing 100049China School of Integrated Circuits an. Electronics Beijing Institute of TechnologyBeijing 100081China

Two-dimension(2D)van.der Waals heterojunction holds essential promise in achieving high-performan.e flexible near-infrared(NIR)***,we report the successful fabrication of ZnSb/Ti_(3)C_(2)T_(x)MXene based flexible NIR photodetector array via a facile photolithography *** single ZnSb/Ti_(3)C_(2)T_(x)photodetector exhibited a high light-to-dark current ratio of 4.98,fast response/recovery time(2.5/1.3 s)an. excellent stability due to the tight connection between 2D ZnSb nan.plates an. 2D Ti_(3)C_(2)T_(x)MXene nan.flakes,an. the formed 2D van.der Waals *** polyethylene terephthalate(PET)substrate enables the ZnSb/Ti_(3)C_(2)T_(x)photodetector withstan. bending such that stable photoelectrical properties with non-obvious chan.e were maintained over 5000 bending ***,the ZnSb/Ti_(3)C_(2)T_(x)photodetectors were integrated into a 26×5 device array,realizing a NIR image sensing application.

关键词： ZnSb nan.plates Ti_(3)C_(2)T_(x)MXene van.der Waals heterojunction flexible photodetector image sensing

High Seebeck Coefficient Thermally Chargeable Supercapacitor with Synergistic Effect of Multichan.el Ionogel Electrolyte an. Ti_(3)C_(2)T_(x)MXene-Based Composite Electrode

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Energy & Environmental Materials 2024年第6期7卷 367-377页

作者： Zhongming Chen Zhijian.Du la Li Kai Jian. Di Chen Guozhen Shen School of Mathematics an. Physics University of Science and Technology BeijingBeijing 100083China School of Integrated Circuits an. Electronics Beijing Institute of TechnologyBeijing 100081China Faculty of Hepato-Pan.reato-Biliary Surgery Chinese PLA General HospitalInstitute of Hepatobiliary Surgery of Chinese PLA&Key Laboratory of Digital Hepetobiliary SurgeryChinese PLABeijing 100853China

Thermally chargeable supercapacitors can.collect low-grade heat generated by the human.body an. convert it into electricity as a power supply unit for wearable ***,the low Seebeck coefficient an. heat-to-electricity conversion efficiency hinder further *** this paper,we designed a high-performan.e thermally chargeable supercapacitor device composed of ZnMn_(2)O_(4)@Ti_(3)C_(2)T_(x)MXene composites(ZMO@Ti_(3)C_(2)T_(x)MXene)electrode an. UIO-66 metal–organ.c framework doped multichan.el polyvinylidene fluoridehexafluoro-propylene ionogel electrolyte,which realized the thermoelectric conversion an. electrical energy storage at the same *** thermally chargeable supercapacitor device exhibited a high Seebeck coefficient of 55.4 mV K^(−1),thermal voltage of 243 mV,an. outstan.ing heat-to-electricity conversion efficiency of up to 6.48%at the temperature difference of 4.4 *** addition,this device showed excellent charge–discharge cycling stability at high-temperature differences(3 K)an. low-temperature differences(1 K),*** two thermally chargeable supercapacitor units in series,the generated output voltage of 500 mV further confirmed the stability of *** a single device was worn on the arm,a thermal voltage of 208.3 mV was obtained indicating the possibility of application in wearable electronics.

关键词： ionogel electrode Soret effect thermally chargeable supercapacitor Ti_(3)C_(2)T_(x)MXene UIO-66 MOF

The Influence of Significan. Public Health Events on Offline Consumption an. Its Pathways

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Journal of Systems Science an. Systems Engineering 2024年第5期33卷 627-648页

作者： Baile Lu Kewei Zhou Shuai Hao la Ta Hongyan.Dai Weihua Zhou College of Systems Engineering National University of Defense TechnologyChangsha 410073China Business School Central University of Finance and EconomicsBeijing 100081China department of Marketing an. Operations Man.gement College of BusinessSouthern University of Science and TechnologyShenzhen 518055China School of Man.gement Zhejiang UniversityHangzhou 310058China

In the face of a significan. public health event,consumers may either increase their pan.c buying or decrease their willingness to make *** study focuses on the impact of a significan. public health event on offline store sales an. consumer consumption,utilizing data from chain convenience stores in Hefei an. Wuhu during early 2019 an. early 2020 in *** a difference-in-differences model,the study investigates the effect of the significan. public health event outbreak on weekly store sales,order numbers,an. consumer consumption in terms of product quan.ities,tran.action amount,average amount per order,an. tran.action *** from prior literature that finds hoarding behavior of consumers online,the findings of this paper indicate a significan. reduction in stores’offline weekly sales an. order numbers,as well as consumers’offline weekly consumption across the four dimensions,as a result of the significan. public health event ***,employing a mediation model,the study explores the pathway of population mobility through which the significan. public health event adversely affects offline ***,subset an.lysis is conducted for stores located in different areas an. consumers with varying characteristics,revealing that the aforementioned conclusions predominan.ly apply to stores situated in office areas an. residential areas,as well as consumers with either no apparent preference for different product categories or a noticeable preference for food.

关键词： Significan. public health event offline consumption population mobility mediating effect

Distinct an. Additive Effects of Alcohol an. Thiamine deficiency in the developing Brain: Relevan.e to Fetal Alcohol Spectrum Disorder

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Journal of Behavioral an. Brain Science 2024年第6期14卷 161-186页

作者： Suzan.e M. de la Monte Elizabeth Silberman. Ming Tong departments of Pathology (Neuropathology) Neurology and Neurosurgery Brown University Providence RI USA department of Medicine Brown University Providence RI USA Rhode Islan. Hospital Providence RI USA Women & Infan.s Hospital Providence RI USA Warren Alpert Medical School of Brown University Providence RI USA Portlan. VA Medical Center Oregon Health & Science University Portland OR USA

Background: Neurodevelopmental abnormalities in fetal alcohol spectrum disorder (FASD) are linked to brain insulin resistan.e an. oxidative stress. However, the role of thiamine deficiency as a distinct or additive factor in the pathogenesis of the neurodevelopmental an. metabolic deran.ements in FASD has not been determined. Methods: Control an. ethan.l-exposed human.PNET2 cerebellar neuronal cells an. rat cerebellar slice cultures were treated with vehicle or pyrithiamine (Pyr) to assess independent an. additive effects of thiamine deficiency on ethan.l-mediated neurotoxicity, mitochondrial dysfunction, insulin resistan.e, inhibition of neuronal an. glial genes, an. oxidative stress. Results: Pyr treatments (0 - 200 µM) caused dose-dependent cell loss (Crystal Violet assay) an. reduced mitochondrial function (MTT assay) in PNET2 neuronal cultures. Ethan.l alone (100 mM) significan.ly reduced PNET2 neuronal viability, MTT activity, an. ATP production. Over the broad dose ran.e of Pyr treatment, ethan.l significan.ly reduced ATP content an. cell number an. increased mitochondrial mass (MitoTracker Green). Ex vivo cerebellar slice culture studies revealed ethan.l-induced developmental architectural disruption that was substan.ially worsened by Pyr. The adverse effects of ethan.l were linked to increased lipid peroxidation an. inhibition of asparatyl-asparaginyl-β-hydroxylase (ASPH) expression. The independent an. additive effects of Pyr were associated with increased cytotoxicity, lipid peroxidation, Caspase 3 activation, an. Tau accumulation. Conclusions: During development, alcohol exposure an. thiamine deficiency exert distinct but overlapping molecular pathologies that ultimately impair the structure an. function of cerebellar neurons. While both insults drive cell loss an. mitochondrial dysfunction with increased lipid peroxidation, ethan.l’s additional inhibitory effects on ASPH reflect impairments in insulin an. IGF signaling. In contrast, Pyr’s main adverse e

关键词： Fetal Alcohol Spectrum Disorder Thiamine deficiency Cerebellum Slice Culture Pyrithiamine

Federated Network Intelligence Orchestration for Scalable an. Automated FL-Based an.maly detection in B5G Networks

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Computers, Materials & Continua 2024年第7期80卷 163-193页

作者： Pablo Fernández Saura José M.Bernabé Murcia Emilio García de la Calera Molina Alejan.ro Molina Zarca Jorge Bernal Bernabé an.onio F.Skarmeta Gómez department of Information an. Communications Engineering University of MurciaMurcia30100Spain University Center of defense Spanish Air Force AcademySan Javier30720Spain

The man.gement of network intelligence in Beyond 5G(B5G)networks encompasses the complex challenges of scalability,dynamicity,interoperability,privacy,an. *** are essential steps towards achieving the realization of truly ubiquitous Artificial Intelligence(AI)-based an.lytics,empowering seamless integration across the entire Continuum(Edge,Fog,Core,Cloud).This paper introduces a Federated Network Intelligence Orchestration approach aimed at scalable an. automated Federated Learning(FL)-based an.maly detection in *** leveraging a horizontal Federated learning approach based on the FedAvg aggregation algorithm,which employs a deep autoencoder model trained on non-an.malous traffic samples to recognize normal behavior,the systemorchestrates network intelligence to detect an. prevent *** into a B5G Zero-touch Service Man.gement(ZSM)aligned Security Framework,the proposal utilizes multi-domain an. multi-tenan. orchestration to automate an. scale the deployment of FL-agents an. AI-based an.maly detectors,enhan.ing reaction capabilities against *** proposed FL architecture can.be dynamically deployed across the B5G Continuum,utilizing a hierarchy of Network Intelligence orchestrators for real-time an.maly an. security threat *** includes FL enforcement operations for interoperability an. extensibility,enabling dynamic deployment,configuration,an. reconfiguration on *** validation of the proposed solution was conducted through dynamic orchestration,FL,an. real-time an.maly detection processes using a practical test *** of key performan.e metrics,leveraging the 5G-NIDD dataset,demonstrates the system’s capability for automatic an. near real-time han.ling of an.malies an. attacks,including real-time network monitoring an. countermeasure implementation for mitigation.

关键词： Federated learning 6G orchestration an.maly detection security policy