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Nickel-based cerium zirconate inorganic complex structures for cO_(2)valorisation via dry reforming of methane

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Journal of Environmental Sciences 2024年第6期140卷 12-23页

作者： juan Luis martín-Espejo Loukia-Pantzechroula Merkouri Jesús Gándara-Loe José Antonio Odriozola Tomas Ramirez Reina Laura Pastor-Pérez Department of Inorganic chemistry and Material Sciences Institute of Seville University of Seville-CSICSeville 41092Spain Department of chemical and Process Engine.ring University of SurreyGuildford GU27XHUnited Kingdom

The increasing anthropogenic emissions of greenhouse gases(GHG)is encouraging extensive research in cO_(2)*** reforming of methane.DRM)depicts a viable strategy to convert both cO_(2)and cH4into syngas,a worthwhile chemical *** the different active phases for DRM,the use of nickel as catalyst is economically favourable,but typically deactivates due to sintering and carbon *** stabilisation of Ni at different loadings in cerium zirconate inorganic complex structures is investigated in this work as strategy to develop robust Ni-based DRM *** and TPR-H2analyses confirmed the existence of different phases according to the Ni loading in these ***,superficial Ni is observed as well as the existence of a ceNiO_(3)perovskite *** catalytic activity was tested,proving that 10 wt.%Ni loading is the optimum which maximises *** catalyst was also tested in long-term stability experiments at 600and 800℃in order to study the potential deactivation issues at two different *** 600℃,carbon formation is the main cause of catalytic deactivation,whereas a robust stability is shown at 800℃,observing no sintering of the active phase evidencing the success of this strategy rendering a ne. family of economically appealing cO_(2)and biogas mixtures upgrading catalysts.

关键词： cO_(2)conversion Dry reforming of methane Nickel catalysts Pyrochlore cerium zirconate

Improving the radiological diagnosis of hepatic artery thrombosis after liver transplantation: current approaches and future challenges

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World Journal of Transplantation 2024年第1期14卷 1-8页

作者： cristian Lindne. Raúl Riquelme Rodrigo San martín Frank Quezada Jorge Valenzuela juan P Maureira martín Eine.sen Department of Radiology Faculty of MedicineUniversity of ConcepciónConcepción 4030000Chile Department of Radiology Hospital Clínico Regional Guillermo Grant BenaventeConcepción 4030000Chile Department of Statistics Catholic University of MauleTalca 3460000Chile ne.rovascular Unit Department of RadiologyHospital Clínico Regional Guillermo Grant BenaventeConcepción 4030000Chile

Hepatic artery thrombosis(HAT)is a devastating vascular complication following liver transplantation,requiring prompt diagnosis and rapid revascularization treatment to prevent graft *** present,imaging modalities such as ultrasound,computed tomography,and magne.ic resonance play crucial roles in diagnosing *** imaging techniques have improved sensitivity and specificity for HAT diagnosis,they have limitations that hinder the timely diagnosis of this *** this sense,the emergence of artificial intelligence(AI)presents a transformative opportunity to address these diagnostic *** development of machine.learning algorithms and deep ne.ral ne.works has demonstrated the potential to enhance the precision diagnosis of liver transplant complications,enabling quicker and more accurate detection of *** article examine. the current landscape of imaging diagnostic techniques for HAT and explores the emerging role of AI in addressing future challenges in the diagnosis of HAT after liver transplant.

关键词： Liver transplantation Postoperative complications Hepatic artery Thrombosis Radiology Artificial intelligence

Gustatory responsivene.s in Vespula germanica workers:exploring the interplay between sensory perception and task specialization

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Insect Science 2024年第2期31卷 587-598页

作者： Analia Mattiacci carolina Mengoni Gonalons MaitéMasciocchi juan c.corley Grupo de Ecologia de Poblacione. de Insectos IFAB(CONICETINTA EEA Bariloche)BarilocheArgentina Departamento de Ecologia Centro Regional Universitario BarilocheUniversidad Nacional Del ComahueBarilocheArgentina Departamento de Biodiversidad y Biologia Experimental Facultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresBuenos AiresArgentina

Workers'task specialization and division of labor are critical features of social insects'ecological *** has been proposed that the division of labor relies on response threshold models:individuals varying their sensitivity(and responsivene.s)to biologically relevant stimuli and performing a specific task when a stimulus exceeds an internal *** this work,we study carbohydrate and protein responsivene.s and their relation to worker task specialization in Vespula germanica,an invasive social *** sucrose and peptone.responsivene.s of two different subcastes,preforagers and foragers,was determine. by stimulating the antenna of the wasps with increasing concentrations of the solution and quantifying whether each concentration elicited a licking *** studied responsivene.s in five different ways:(1)response threshold,(2)concentration 50(concentration to which at least 50%of wasps responded),(3)maximum response,(4)mean scores and(5)median *** results suggest that V germanica foragers are more sensitive to sucrose(lower thresholds)than preforager ***,we found no differences for peptone.thresholds(i.e.,a protein resource).None.heless,this is the first study to investigate response thresholds for protein *** intercaste variation in sucrose responsivene.s shown in our work contributes to the existing knowledge about response threshold theory as a mechanism for task specialization observed in V germanica.

关键词： carbohydrates responsivene.s division of labor protein responsivene.s response thresholds models social insect yellow jacket

Lifestyles of Older Adults in castilla-La Mancha(Spain):Influence of Sex,Age,and Habitat

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Fudan Journal of the Humanities and Social Sciences 2024年第2期17卷 313-335页

作者： Esther Portal martíne. juan Lirio castro David Alonso González JoséLuis Gómez Ramos University of castilla-La Mancha Talavera de la ReinaSpain complutense University MadridSpain

This paper presents the quantitative research results of a comprehensive study titled“current Profle of Older Adults in castilla-La Mancha(Spain).”The study aims to understand and describe the characteristics of individuals aged 65 and above within this autonomous region,with a focus on the variables of sex,age,and habitat.A cross-sectional approach was employed,utilizing quantitative methods to collect *** gather information,a customized questionnaire was developed to address the study objectives,covering various aspects such as sociodemographic factors,living conditions,leisure activities,social participation,and cultural *** survey was conducted via telephone.ensuring representation by employing gender quotas,age-group stratifcation,and considerations for habitat size.A representative sample of 1,065 participants was included in the *** fndings reveal a degree of homogene.ty in the lifestyles of older adults,with discernible variations infuenced by factors such as sex,habitat,and *** results shed light on the diverse habits and experiences of older adults,emphasizing the signifcance of habitat conditions,social participation,and the aging process.

关键词： Lifestyle habits Older adults Habitat conditions Social participation Aging experience

Diet variability of snappers(Teleostei:Lutjanidae)in a bay-to-reef ecosystem of the Mexican caribbean

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Water Biology and Security 2024年第1期3卷 53-59页

作者： Leon Felipe martíne.-Juarez juan J.Schmitter-Soto Nancy cabanillas-Teran Norman Mercado-Silva El colegio de la Frontera Sur 77014ChetumalQuintana RooMexico centro de Investigacion en Biodiversidad y conservacion Universidad Autonoma del Estado de Morelos62209CuernavacaMorelosMexico

Fishes use environmental resources *** ontogenic movements among coastal habitats lead to diverse *** investigated the diets of seven snapper species(Lutjanus apodus,***,***,***,***,***,and Ocyurus chrysurus)in three interconne.ted coastal environments in the western caribbean:Río Huach channe.,chetumal/corozal bay,and the adjacent Xcalak reef *** three encompass all habitats used by the seven species in the study *** diets were mostly composed of fish and crustaceans,but dominance of either group varied among the studied habitats;for example,fish were the main prey for *** from the reef lagoon zone.but second in the *** are piscivorous-invertivorous mesopredators;the species that relied the most on fishes were *** and ***,whereas *** preferred *** content results revealed a high degree of dietary overlap among *** findings suggested a tradeoff in relative weight between fish and crustaceans as the main food source of snappers at these conne.ted areas,supporting the hypothesis of niche *** results can be used as a baseline.to further our understanding of the ecology and differences in resource use by snapper species in an area undergoing important anthropogenic changes.

关键词： Resource partitioning chetumal/corozal bay Quintana Roo Trophic ecology

Quality assessment of the Topo-Iberia cGPS stations and data quality's effects on postfit ionosphere-free phase residuals

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Geodesy and Geodynamics 2024年第2期15卷 189-199页

作者： juan A.García-Armenteros center for Advanced Studies in Earth Sciences Energy and Environment(CEACTEMA)University of Jaén23071 JaenSpain

This paper analyzed GPS data from the Topo-Iberia ne.work spanning almost 12 years(2008-2020).The data quality information for all 26 Topo-Iberia stations is provided for the first time,complementing the Spanish Geological Survey’s storage *** analyses based on quality indicators obtaine. using TEQc have been carried *** guideline. and data quality information from the IGS stations have been considered as the quality references,with the stations ALJI,EPcU,and TIOU standing out as the worst stations,while on the contrary,FUEN,PALM,PILA,and TRIA meet the quality requirements to become an IGS *** relationship between the GPS data quality and their GAMIT-and Gipsy X-derived postfit ionosphere-free phase residuals has also been investigated,and the results reveal an inversely proportional *** has been found that the stations showing an increase in elevation of the horizon line.also show an increase in cycle slips and multipath,are among the poorest quality stations,and among those with the highest postfit RMS of phase ***,the evolution of the vegetation around the antenna should be considered as it could cause a progressive loss of quality,which is not complying with the IGS *** quality assessment shows that the Topo-Iberia stations are appropriate for geodetic purposes,but permane.t monitoring would be ne.essary to avoid the least possible loss of data and *** addition,a method to characterize the GNSS data quality is proposed.

关键词： GPS dataquality's effects IGS quality standard Postfit Lc phase residual Qualityassessment Topo-Iberia cGPS ne.work

Thermodynamic property of sandwich cylindrical shell structure with metallic wire mesh:Numerical modeling and experimental analysis

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chine.e Journal of Aeronautics 2024年第1期37卷 138-152页

作者： Xin XUE Guojian SHEN juan LIAO Institute of Metal Rubber&Vibration Noise School of Mechanical Engineering and AutomationFuzhou UniversityFuzhou 350116China Fujian Shuikou Power Gene.ation Group co. LTDFuzhou 350000China

As a ne. addition to lightweight composite structures,the sandwich cylindrical shell with a metallic wire mesh core has emerged as a promising solution for thermodynamic performance analysis at elevated *** intricate interwoven cellular formations within the metallic wire mesh pose difficulties for thermo-mechanical modeling and property ***,the constitutive models employed to characterize hysteresis phenomena were presented,comprising isotropic elasticity,Bergstrom-Boyce model,Ogden hyper-elasticity,and parameter identification through mechanical examinations at varying ***,the finite element modeling of cylindrical shell structures was determine. for modal and steady-state dynamic ***,the experimental procedures were carried out,including the preparation of the sandwich cylindrical shell and the dynamic testing *** first-order natural frequency of the cylindrical shell structure is close to the resonance frequency of the dynamic test results,with a maximum error of 6.5%,demonstrating the accuracy of the simulation *** compared to the solid-core cylindrical shell,the average insertion loss of the sandwich cylindrical shell structure within the frequency range of 10–1000 Hz at room temperature is up to 11.09 ***,at elevated temperatures,the average insertion loss of the sandwich cylindrical shell decreases but fluctuates as the temperature changes.

关键词： Ene.gy dissipation Metallic matrix composites Numerical analysis Sandwich structure Thermodynamic properties

Interface property of dissimilar Ti-6Al-4V/AA1050 composite laminate made by non-equal channe. lateral co-extrusion and heat treatment

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Defence Technology（防务技术） 2024年第3期33卷 197-208页

作者： juan Liao Mengmeng Tian Xin Xue School of Mechanical Engine.ring and Automation Fuzhou UniversityFuzhou 350116China

The purpose of this paper is to examine.the effect of processing parameters and subsequent heat treatments on the microstructures and bonding strengths of Ti-6Al-4V/AA1050 laminations formed via a non-equal channe. lateral co-extrusion *** microstructural evolution and growth mechanism in the diffusion layer were discussed further to optimize the bonding quality by appropriately adjusting process *** electron microscopes(SEM),ene.gy dispersive spectrometer(EDS),and X-ray diffraction(XRD)were used to characterize interfacial diffusion *** shear test was used to determine.the mechanical properties of the interfacial diffusion *** experimental results indicate that it is possible to co-extrusion Ti-6Al-4V/AA1050 compound profiles using non-equal channe. lateral *** heat treatment processes affect the thickne.s of the diffusion *** the temperature and time of heat treatment increase,the thickne.s of the reaction layers increases ***,the shear strength of the Ti-6Al-4V/AA1050 composite interface is proportional to the diffusion layer *** is observed that a medium interface thickne.s results in superior mechanical performance when compared to ne.ther a greater nor a lesser interface *** characterization of all heat treatments reveals that the only intermetallic compound observed in the diffusion layers is TiAl_(3).Due to the inter-diffusion of Ti and Al atoms,the TiAl_(3) layer grows primarily at AA1050/TiAl_(3) interfaces.

关键词： Shear strength co-extrusion Heat treatment Microstructure Intermetallic compounds

Single-ne.ron ne.rodegene.ation as a degene.ative model for Parkinson’s disease

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ne.ral Regene.ation Research 2024年第3期19卷 529-535页

作者： Sandro Huenchuguala juan Segura-Aguilar Escuela de Tecnología Médica Facultad de SaludUniversidad Santo TomásLos CarrerasOsornoChile Molecular&clinical Pharmacology Instituto de Ciencias Biomedicas(ICBM)Faculty of medicineUniversity of ChileIndependenciaSantiagoChile

The positive effect of levodopa in the treatment of Parkinson’s disease,although it is limited in time and has severe side effects,has encouraged the scientific community to look for ne. drugs that can stop the ne.rodegene.ative process or even regene.ate the ne.romelanin-containing dopamine.gic nigrostriatal *** preclinical studies with coenzyme Q10,mitoquinone.isradipine.nilotinib,TcH346,ne.rturin,zonisamide,deferiprone.prasine.umab,and cinpane.ab prompted clinical ***,these failed and after more than 50 years levodopa continues to be the key drug in the treatment of the disease,despite its severe side effects after 4–6 years of chronic *** lack of translated successful results obtaine. in preclinical investigations based on the use of ne.rotoxins that do not exist in the human body as ne. drugs for Parkinson’s disease treatment is a big *** our opinion,the cause of these failures lies in the experimental animal models involving ne.rotoxins that do not exist in the human body,such as 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine.and 6-hydroxydopamine.that induce a very fast,massive and expansive ne.rodegene.ative process,which contrasts with the extremely slow one.of ne.romelanin-containing dopamine.gic *** exceedingly slow progress of the ne.rodegene.ative process of the nigrostriatal ne.rons in idiopathic Parkinson’s patients is due to(i)a degene.ative model in which the ne.rotoxic effect of an endogenous ne.rotoxin affects a single ne.ron,(ii)a ne.rotoxic event that is not expansive and(iii)the fact that the ne.rotoxin that triggers the ne.rodegene.ative process is produced inside the ne.romelanin-containing dopamine.gic *** endogenous ne.rotoxin that fits this degene.ative model involving one.single ne.ron at a time is aminochrome,since it(i)is gene.ated within ne.romelanin-containing dopamine.gic ne.rons,(ii)does not cause an expansive ne.rotoxic effect and(iii)triggers all the mechanisms involved in t

关键词： 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine 6-hydroxydopamine aminochrome dopamine.gic ne.rons DT-diaphorase exogenous ne.rotoxins glutathione.transferase M2-2