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Highly electroactive N–Fe hydrothermal carbons and carbon nanotubes for the oxygen reduction reaction

journal of Energy Chemistry 2020年第11期29卷 260-270页

作者： R.G.Morais N.rey-Raap j.L.Figueiredo M.F.R.Pereira Associate Laboratory LSRE-LCM Departamento de Engenharia QuimicaFaculdade de EngenhariaUniversidade do PortoR.Dr.Roberto Frias s/n4200-465PortoPortugal

Glucose-derived carbons were prepared by hydrothermal carbonization of glucose followed by carbonization or activation to obtain carbon materials with different microporosities. These microporous carbons and carbon nanotubes(CNTs) were functionalized with melamine and/or iron(Ⅱ) phthalocyanine(FePc)following three different methodologies:(i) Functionalization with melamine via thermal treatment,(ii)incorporation of the lowest amount of FePc reported in the literature via incipient wetness impregnation followed by thermal treatment and(iii) functionalization with melamine followed by Fe Pc *** chemical and textural characterization of the prepared materials and their electrochemical assessment allowed to understand the role of microporosity in the incorporation of FePc and its effect on the oxygen reduction reaction(ORR). It was observed that FePc was preferentially incorporated inside the porous structure, especially in samples with more developed microporosity. However, functionalization with melamine modified the textural properties and the surface chemistry, favoring the incorporation of FePc on the surface. Regarding the electrochemical performance, the presence of FePc greatly enhanced the electroactivity of the microporous catalysts. An onset potential of 0.88 V and a four-electron pathway were obtained for glucose-derived carbons, whereas the limiting current densities and kinetic current densities rose by 126% and 222%, respectively, in comparison to the base sample. Notwithstanding, the highest electrochemical activity was observed for the sample prepared with CNTs, due to the synergy between the active metal centers and their highly graphitic carbon structure. The electrochemical parameters of CNTFeP csurpass the commercial Pt/C. The half-wave potential is 40 mV higher, the limiting current density increases by 17%, and a negligible production of by-products(< 1%) was observed.

关键词： Iron(Ⅱ)phthalocyanine Hydrothermal carbons Carbon nanotubes Oxygen reduction reaction Electrocatalysis

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comLocal adaptation to distinct elevational cores contributes to current elevational divergence of two Aquilegia vulgaris subspecies

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journal of Plant Ecology 2015年第3期8卷 273-283页

作者： jesús M.Bastida Pedro j.rey julio M.Alcántara Departamento de Biología Animal Biología Vegetal y EcologíaUniversidad de JaénJaén E-23071Spain

Aims Phenotypic plasticity and local adaptation of populations at their distributional limits are crucial to understand species colonization and persistence in novel or marginal environments,as well as spe-cies divergence and niche width *** assess the contri-bution of these processes to shape current elevational limits and determine elevational phenotypic divergence between two subspe-cies of Aquilegia vulgaris(*** and nevadensis).Methods We conducted sowing and transplant experiments considering four elevations throughout the current elevational range of *** in southern Iberian *** were designed to explore,on the one hand,local adaptation through three components of performance(germination,survival and growth)and,on the other hand,the phenotypic differentiation and/or plasticity associated to local *** populations per subspecies(three from the elevational core and one from the elevational boundary)were used as seed *** of local adaptation and phenotypic differentiation are examined in the context of the‘centre-periphery’*** Findings Central populations of both subspecies performed better at their local elevations while marginal populations were maladapted,confirming the hypothesis and contributing to explain the current elevational segregation of these *** of glandular pubescence and germination timing seem to be related to local adaptation,through phenotypic differentiation between subspe-cies or *** widespread *** showed signals of adaptive plasticity in the timing of germination while it was not the case in the endemic ***.

关键词： Iberian Aquilegia local adaptation phenotypic plasticity centre-periphery hypothesis elevational divergence germination timing

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Plant performance and morphofunctional differentiation in response to edaphic variation in Iberian columbines: cues for range distribution?

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journal of Plant Ecology 2014年第4期7卷 403-412页

作者： jesús M.Bastida Pedro j.rey julio M.Alcántara Departamento de Biología Animal Biología Vegetal y EcologíaUniversidad de JaénParaje Las Lagunillas s/n.E-23071 JaénSpain

Aims Experimental studies of the response to environmental variation of closely related taxa are needed to understand the mechanisms underly-ing phenotypic divergence,habitat segregation and range span within a radiating *** explored the magnitude of phenotypic differenti-ation and adaptive plasticity in relation to edaphic variation and its sig-nificance for habitat segregation and range span in Iberian *** We performed a common garden experiment varying soil type(cal-careous ***)and depth(rocky-shallow ***)with two pairs of widespread and narrowly distributed subspecies of Iberian columbines:Aquilegia vulgaris(*** and nevadensis)and Aquilegia pyrenaica(*** and cazorlensis).We com-pared tolerance to edaphic variation,trait differentiation and adaptive plasticity of 10 morpho-functional traits between species and distri-bution ***,we obtained estimates of the competitive environment faced by each taxon in two to four populations per *** Findingsresults partially support hypotheses of higher competitive ability and tolerance to edaphic variation in widespread than in narrow endemic *** the species level,the widely distributed taxon was the most tolerant to edaphic *** species,no consistent pattern emerged since the population from the most widespread subspecies was the most tolerant in *** but not in *** were differentiated in many traits at species and range ***,the pattern of differentiation does not fully support the hypothesis of higher specialization and stress toler-ance in narrow *** plasticity was generally low,the results support the hypothesis of adaptive plasticity in widespread but not in restricted taxa at least at species *** differences(adaptive plasticity and competitive ability among others)may have contributed to phenotypic divergence and edaphic niche segregation,as well as to differen

关键词： Aquilegia habitat differentiation phenotypic divergence phenotypic plasticity endemism

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BRANCHING RATIOS OF φ（2S） AND xc0,1,2

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Chinese Physics C 2016年第10期40卷 794-795页

作者： j.j. Herngndez-rey S. Navas C. Patrignani IFIC Valencia University of Granada Bologna Univ. INFN

Since 2002, the treatment of the branching ratios of the φ（2S） and Xc0,1,2 has undergone an important restructuring. When measuring a branching ratio experimentally, it is not always possible to normalize the number of events observed in the corresponding decay mode to the total number of particles produced. Therefore, the experimenters sometimes report the number of observed decays with respect to another decay mode of the same or another particle in the relevant decay chain. This is actually equivalent to measuring combinations of branching fractions of several decay modes.

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Complex patterns of environmental niche evolution in Iberian columbines (genus Aquilegia, ranunculaceae)

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journal of Plant Ecology 2015年第5期8卷 457-467页

作者： Rafael jaime julio M.Alcántara jesús M.Bastida Pedro j.rey Departamento de Biología Animal Biología Vegetal y EcologíaUniversidad de JaénCampus Las Lagunillass/n.Jaén E-23071Spain

Aims This study explores the patterns of niche differentiation in a group of seven closely related columbines(genus Aquilegia,ranunculaceae)from the Iberian *** of these columbines are subject to complex patterns of divergent selection across environ-ments,which partly explain the taxonomic structure of the *** suggests the hypothesis that niche divergence must have occurred along the process of diversification of the *** We used maxEnt to build environmental niche models of seven subspecies belonging to the three species of Aquilegia present in the Iberian *** these models,we compared the envi-ronmental niches through two different approaches:ENmtools and multivariate *** FindingsmaxEnt distributions conformed closely to the actual distribution of the study *** methods failed to uncover any clear patterns of niche differentiation or conservatism in Iberian *** analyses indicate the existence of dif-ferentiation along altitudinal gradients and along a gradient of climatic conditions determined by the summer precipitation and ***,climatic conditions related to winter tem-perature and precipitation,as well as soil properties,were equally likely to show conservatism or *** complex patterns of niche evolution we found suggest that Iberian Columbines have not been significantly constrained by forces of niche conservatism,so they could respond adaptively to the fast and profound climate changes in the Iberian Peninsula through the glacial cycles of the Pleistocene.

关键词： Aquilegia ecological niche modelling niche divergence niche conservatism evolution maxEnt ENmTools

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Experimental test of a building thermal system for preventive maintenance based on thermoeconomic analysis

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Energy Storage and Saving 2024年第1期3卷 42-51页

作者： I.Prol-Godoy A.Picallo-Perez j.M.Sala-Lizarraga j.rey-Martínez Research group ENEDI Department of Thermal EngineeringUniversity of the Basque Country(UPV/EHU)Bilbao48013Spain Research Group Termotecnia University of ValladolidValladolid47002Spain

An analysis of the sectorial structure of energy consumption shows that residential and tertiary sector buildings are the third-highest consumers,responsible for 29.5%of a city’s final energy *** Building Quality Control Laboratory of the Basque Government aims to promote quality,innovation,and sustainability in *** accomplish this goal,it has constructed an experimental facility with different energy generation technologies and a very versatile control system for testing different energy systems and operation *** this study,we tested a facility for supplying domestic hot water and heating for a multi-family house by means of a condensing boiler and an aerothermal heat pump(together with the corresponding control).This installation could reproduce the thermal demands required to be satisfied by the generation equipment through a programmed operation of the installation based on real ***,this installation was analyzed using thermoeconomics(TE)to solve problems unable to be solved using traditional energy analyses based on the First Law of *** problems include:(1)Determining the costs of the products of the installation based on physical criteria,(2)detecting the places where losses actually occur,evaluating their costs,and proposing cost-effective improvements,and(3)diagnosing issues in the *** a result,this paper suggests a solution to the preventive maintenance problems confronting the technical maintenance personnel for thermal installations in buildings by applying TE knowledge and using real data collected from sensors.

关键词： Experimental essay Energy savings in thermal systems Thermoeconomics Thermoeconomic costs Diagnosis

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SPECTROSCOPY OF MESONS CONTAINING TWO HEAVY QUARKS

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Chinese Physics C 2016年第10期40卷 785-793页

作者： S. Eidelman C. Hanhart B.K. Heltsley j.j. hernandez-rey R.E. Mitchell S. Navas C. Patrignani Budker Inst. and Novosibirsk State Univ. Forschungszentrum jiilich Cornell Univ. Univ. Valencia-CSIC Indiana Univ. Univ. Granada Bologna Univ. INFN

A golden age for heavy quarkonium physics dawned at the turn of this century, initiated by the confluence of exciting advances in quantum chromodynamics （QCD） and an explosion of related experimental activity. The subsequent broad spectrum of breakthroughs, surprises, and continuing puzzles had not been anticipated. In that period, the BESII program concluded only to give birth to BESIII; the B-factories and CLEO-c flourished; quarkonium production and polarization measurements at HERA and the Tevatron matured; and heavyion collisions at RHIC opened a window on the deconfinement regime. Recently also ATLAS, CMS and LHCb started to contribute to the field. For an extensive presentation of the status of heavy quarkonium physics, the reader is referred to several reviews [1-8]. This note focuses on experimental developments in heavy quarkonium spectroscopy with very few theoretical comments. Some other comments on possible theoretical interpretations of the states not predicted by the quark model are presented in the mini-review on non qq-states.

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Kinetic and morphology study of alginate-vineyard pruning waste biocomposite vs. non modified vineyard pruning waste for dye removal

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journal of Environmental Sciences 2015年第12期27卷 158-167页

作者： Xanel Vecino Rosa Devesa-rey Salvador Villagrasa jose M.Cruz Ana B.Moldes Chemical Engineering Department School of Industrial Engineering (EEI)University of VigoCampus As Lagoas-Marcosende Defense University Center Naval AcademyUniversity of Vigo Materials Engineering Department School of Industrial Engineering (EEI)University of VigoCampus As Lagoas-Marcosende

In this work a comparative bioadsorption study between a biocomposite consisting of hydrolysed vineyard pruning waste entrapped in calcium alginate spheres and non entrapped vineyard residue was carried *** have demonstrated that the biocomposite based on lignocellulose-calcium alginate spheres removed 77.3% of dyes,while non entrapped lignocellulose eliminated only removed 27.8% of colour *** experimental data were fitted to several kinetic models（pseudo-first order,pseudo-second order,Chien-Clayton model,intraparticle diffusion model and Bangham model）; being pseudo-second order the kinetic model that better described the adsorption of dyes onto both *** addition,a morphological study（roughness and shape） of alginate-vineyard biocomposite was established under extreme conditions,observing significant differences between hydrated and dehydrated alginate-vineyard *** techniques used to carry out this morphological study consisted of scanning electron microscopy（SEM）,perfilometry and 3D surface analysis.

关键词： Immobilized alginate-vineyard Dyes Kinetic studies Roughness Spherical shape

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Fundamental CRISPR-Cas9 tools and current applications in microbial systems

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Synthetic and Systems Biotechnology 2017年第3期2卷 219-225页

作者： Pingfang Tian jia Wang Xiaolin Shen justin Forrest rey Qipeng Yuan Yajun Yan College of Life Science and Technology Beijing University of Chemical TechnologyBeijing 100029China State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China College of Engineering The University of GeorgiaAthensGA 30602USA

Derived from the bacterial adaptive immune system,CRISPR technology has revolutionized conventional genetic engineering methods and unprecedentedly facilitated strain *** this review,we outline the fundamental CRISPR tools that have been employed for strain *** tools include CRISPR editing,CRISPR interference,CRISPR activation and protein *** further characterize the CRISPR technology,we present current applications of these tools in microbial systems,including model-and non-model industrial ***,we point out the major challenges of the CRISPR tools when utilized for multiplex genome editing and sophisticated expression *** address these challenges,we came up with strategies that place emphasis on the amelioration of DNA repair efficiency through CRISPR-Cas9-assisted ***,multiple promising research directions were proposed,mainly focusing on CRISPR-based construction of microbial ecosystems toward high production of desired chemicals.

关键词： CRISPR-Cas9 CRISPR interference CRISPR activation DNA repair Homologous recombination

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Using emotions for the development of human-agent societies

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Frontiers of Information Technology & Electronic Engineering 2016年第4期17卷 325-337页

作者： j.A.RINCON j.BAjO A.FERNANdez V.jULIAN C.CARRASCOSA Department of Computer Systems and Computation Universitat Politecnica de Valencia Departamento de Inteligencia Artificial Universidad Politecnica de Madrid Centre for Intelligent Information Technologies Universidad Rey Juan Carlos

Human-agent societies refer to applications where virtual agents and humans coexist and interact transparently into a fully integrated environment. One of the most important aspects in this kind of applications is including emotional states of the agents(humans or not) in the decision-making process. In this sense, this paper presents the applicability of the jaCalIVE(jason Cartago implemented intelligent virtual environment) framework for developing this kind of society. Specifically, the paper presents an ambient intelligence application where humans are immersed into a system that extracts and analyzes the emotional state of a human group. A social emotional model is employed to try to maximize the welfare of those humans by playing the most appropriate music in every moment.

关键词： Multi-agent systems Virtual environments Emotional agents

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