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Multiphase cooperation for multilevel strain accommodation in a single-crystalline BiFeo3 thin film

chinese Physics B 2024年第9期33卷 57-66页

作者： Wooseon choi Bumsu Park Jaejin Hwang Gyeongtak Han Sang-Hyeok Yang Hyeon Jun Lee Sung Su Lee Ji Young jo Albina Y.Borisevich Hu Young Jeong Sang Ho oh Jaekwang Lee Young-Min Kim Department of Energy Science Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Samsung Electronics Hwaseong 18448Republic of Korea Department of Physics Pusan National UniversityBusan 46241Republic of Korea LG Energy Solution Daejeon 34122Republic of Korea Department of Materials Science and Engineering Kangwon National UniversityRepublic of Korea School of Materials Science and Engineering Gwangju Institute of Science and Technology(GIST)Gwangju 61005Republic of Korea center for Nanophase Materials Sciences Oak Ridge National LaboratoryTN 37831USA Graduate School of Semiconductor Materials and Devices Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea Department of Energy Engineering KENTECH Institute for Energy Materials and DevicesKorea Institute of Energy Technology(KENTECH)Naju 58330Republic of Korea

The functionalities and diverse metastable phases of multiferroic BiFeo3(BFo)thin films depend on the misfit *** mixed phase-induced strain relaxation in multiphase BFo thin films is well known,it is unclear whether a singlecrystalline BFo thin film can accommodate misfit strain without the involvement of its ***,understanding the strain relaxation behavior is key to elucidating the lattice strain–property *** this study,a correlative strain analysis based on dark-field inline electron holography(DIH)and quantitative scanning transmission electron microscopy(STEM)was performed to reveal the structural mechanism for strain accommodation of a single-crystalline BFo thin *** nanoscale DIH strain analysis results indicated a random combination of multiple strain states that acted as a primary strain relief,forming irregularly strained *** STEM-based bond length measurement of the corresponding strained nanodomains revealed a unique strain accommodation behavior achieved by a statistical combination of multiple modes of distorted structures on the unit-cell *** globally integrated strain for each nanodomain was estimated to be close to􀀀1.5%,irrespective of the nanoscale strain states,which was consistent with the fully strained BFo film on the SrTio3 *** functional theory calculations suggested that strain accommodation by the combination of metastable phases was energetically favored compared to single-phase-mediated *** discovery allows a comprehensive understanding of strain accommodation behavior in ferroelectric oxide films,such as BFo,with various low-symmetry polymorphs.

关键词： BiFeo_(3) scanning transmission electron microscopy electron holography multiferroic material strain mapping

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Size-dependent activity of Fe-N-doped mesoporous carbon nanoparticles towards oxygen reduction reaction

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Green carbon 2024年第2期2卷 221-230页

作者： Yilun Zhao Zhengbin Tian Wenquan Wang Xiaohui Deng jo-chi Tseng Guanghui Wang Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266101China Shandong Energy Institute Qingdao 266101China Qingdao New Energy Shandong Laboratory Qingdao 266101China University of chinese Academy of Sciences Beijing 100049China Japan Synchrotron Radiation Research Institute Hyogo 679-5198Japan

The rational design of Fe–N–c catalysts that possess easily accessible active sites and favorable mass transfer,which are usually determined by the structure of catalyst supports,is crucial for the oxygen reduction reaction(oRR).In this study,an oleic acid-assisted soft-templating approach is developed to synthesize size-controlled nitrogen-doped carbon nanoparticles(ranging from 130 nm to 60 nm and 35 nm,respectively)that feature spiral mesopores on their surface(SMcs).Next,atomically dispersed Fe–Nx sites are fabricated on the size-tunable SMcs(Fe1/SMc-x,where x represents the SMc size)and the size-dependent activity toward oRR is *** is found that the catalytic performance of Fe1/SMcs is significantly influenced by the size of SMcs,where the Fe1/SMc-60 catalyst shows the highest oRR activity with a half-wave potential of 0.90 V *** in KoH electrolyte,indicating that the gas-liquid-solid three-phase interface on the Fe1/SMc-60 enhances the accessibility of Fe–Nx *** addition,when using Fe1/SMc-60 as the cathode catalyst in aqueous zinc-air batteries(ZABs),it delivers a higher open-circuit voltage(1.514 V),a greater power density(223 mW cm^(−2)),and a larger specific capacity/energy than Pt/c-based *** results further highlight the potential of Fe1/SMc60 for practical energy devices associated with oRR and the importance of size-controlled synthesis of SMcs.

关键词： Soft-templating approach Size-dependent activity Fe-N-c catalyst oxygen reduction reaction Zinc-air battery

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The role of surface functionalization of silica nanoparticles for bioimaging

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journal of Innovative optical Health Sciences 2016年第4期9卷 11-26页

作者： Maria c.Gomes Angela cunha Tito Trindade joão P.c.Tome QoPNA University of Aveiro 3810-193 AveiroPortugal cIcEco and Department of chemistry University of Aveiro 3810-193 AveiroPortugal cESAM and Department of Biology University of Aveiro 3810-193 AveiroPortugal centro de Quimica Estrutural Instituto Superior Tecnico Universidade de LisboaAv.Rovisco Pais1049-001 LisboaPortugal Department of organic and Macromolecular chemistry Ghent University B-9000 Gent Belgium

Among the several types of inorganic nanoparticles available,silica nanoparticles(SNP)have earned their relevance in biological applications namely,as bioimaging *** fact,uorescent SNP(FSNP)have been explored in this-eld as protective nanocarriers,overcoming some limitations presented by conventional organic dyes such as high photobleaching rates.A crucial aspect on the use of uorescent SNP relates to their surface properties,since it determines the extent of interaction between nanoparticles and biological systems,namely in terms of colloidal stability in water,cellular recognition and internalization,tracking,biodistribution and speci-city,among ***,it is imperative to understand the mechanisms underlying the interaction between biosystems and the SNP surfaces,making surface functionalization a relevant step in order to take full advantage of particle *** versatility of the surface chemistry on silica platforms,together with the intrinsic hydrophilicity and biocompatibility,make these systems suitable for bioimaging applications,such as those mentioned in this review.

关键词： Fluorescent silica nanoparticles bioimaging surface functionalization nanoparticlecell interactions.

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Faujasite zeolite decorated with cobalt ferrite nanoparticles for improving removal and reuse in Pb^2+ions adsorption

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chinese journal of chemical Engineering 2020年第7期28卷 1884-1890页

作者： Elaine c.Paris joão o.D.Malafatti Henrique c.Musetti Alexandra Manzoli Alessandra Zenatti Márcia T.Escote Nanotechnology National Laboratory for Agriculture(LNNA) Embrapa InstrumentaçãoXV de Novembro St.145213560-970 São CarlosSPBrazil Department of chemistry Federal University of São CarlosRod.Washington Luizkm 23513565-905 São CarlosSPBrazil Regional Integrated University of High Uruguay and Missions(URI) Sete de Setembro Ave.162199709-910ErechimRSBrazil Federal University of ABc(UFABc) Avenida dos Estados5001Santo AndréSPBrazil

Water pollution caused by heavy metals ions has been gaining attention in recent years,increasing the interest in the development of methodologies for their efficient removal focusing on the adsorption process for these *** current challenge faced by adsorption processes is the adequate adsorbent immobilization for removal and ***,the present work aimed at producing a faujasite zeolite nanocomposite decorated with cobalt ferrite nanoparticles for Pb^2+ions adsorption in an aqueous medium improving magnetic removal and *** a result,a high surface area(434.4 m^2·g^-1)for the nanocomposite and an 18.93 emu·g^-1 saturation magnetization value were obtained,indicating magnetic removal in a promising material for adsorption *** nanocomposite regeneration capacity evaluated by magnetic recovery after 24 h suspension presented a high Pb^2+ion adsorptive capacity(98.4%)in the first *** 98%of the Pb^2+ions were adsorbed in the second *** this way,the synthesized faujasite:cobalt ferrite nanocomposite reveals itself as a promising alternative in adsorption processes,aiming at a synergic effect of FAU zeolite high adsorptive activity and the cobalt ferrite nanoparticles magnetic activity,allowing for adsorbent recovery from the aqueous medium via magnetic force and successive adsorptive cycles.

关键词： Faujasite zeolite Adsorption cobalt ferrite Nanoparticles Magnetic nanocomposite

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An Adaptive Load Stepping Algorithm for Path-Dependent Problems Based on Estimated convergence Rates

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computer Modeling in Engineering & Sciences 2017年第3期113卷 325-342页

作者： M.T.c.Araújo Fernandes c.o.cardoso W.J.Mansur civil Engineering Department/coPPE/Federal University of Rio de Janeiro Ilha do FundaoP.B.6850621945-970 Rio de JaneiroRJBrazil Petrobras/cenpes Av.Horácio Macedo950Ilha do Fundao21941-915 Rio de JaneiroRJBrazil civil Engineering Department/coPPE/Federal University of Rio de Janeiro Ilha do FundaoP.B.6850621945-970 Rio de JaneiroRJBrazil

A new adaptive(automatic)time stepping algorithm,called RcA(Rate of convergence Algorithm)is *** new algorithm was applied in nonlinear finite element analysis of path-dependent *** step size is adjusted by monitoring the estimated convergence rate of the nonlinear iterative *** RcA algorithm is relatively simple to implement,robust and its performance is comparable to,and in some cases better than,the automatic load incrementaion algorithm existent in commercial *** about the convergence rate of nonlinear iterative processes,an estimation of the rate and a study of the parameters of the RcA algorithm are *** show the capacity of the algorithm to adjust the increment size,detailed discussions based on results for different limit load analyses are *** results obtained by RcA algorithm are compared with those by ABAQUS?,one of the most powerful nonlinear FEA(Finite Element Analysis)commercial software,in order to verify the capability of RcA algorithm to adjust the increment size along nonlinear analyses.

关键词： Rate of convergence nonlinear automatic load incrementation limit load

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BiDiBlast:comparative Genomics Pipeline for the Pc

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Genomics, Proteomics & Bioinformatics 2010年第2期8卷 135-138页

作者： joo M.G.c.F. de Almeida centro de Recursos Microbiológicos(cREM) Departamento de Ciências da VidaFaculdade de Ciências e TecnologiaUniversidade Nova de LisboaQuinta da Torre2829-516 CaparicaPortugal

Bi-directional BLAST is a simple approach to detect, annotate, and analyze candidate orthologous or paralogous sequences in a single go. This procedure is usually confined to the realm of customized Perl scripts, usually tuned for UNIX-like environments. Porting those scripts to other operating systems involves refactoring them, and also the installation of the Perl programming environment with the required libraries. To overcome these limitations, a data pipeline was implemented in Java. This application submits two batches of sequences to local versions of the NcBI BLAST tool, manages result lists, and refines both bi-directional and simple hits. Go Slim terms are attached to hits, several statistics are derived, and molecular evolution rates are estimated through PAML. The results are written to a set of delimited text tables intended for further analysis. The provided graphic user interface allows a friendly interaction with this application, which is documented and available to download at http：//***/course/***？id=2079 or https：//***/projects/bidiblast/ under the GNU GPL license.

关键词： comparative genomics molecular evolution sequence batch processing annotation transfer

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Impaired T-cell differentiation in diabetic foot ulceration

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cellular & Molecular Immunology 2017年第9期14卷 758-769页

作者： joão Moura joão Rodrigues Marta Gonçalves cláudia Amaral Margarida Lima Eugénia carvalho center for Neuroscience and cell Biology(cNc) University of Coimbra3004-517 CoimbraPortugal Hospital de Santo Antonio(HSA) Centro Hospitalar do Porto(CHP)4099-001 PortoPortugal Unidade Multidisciplinar de Investigação Biomédica(UMIB/IcBAS/UP) PortoPortugal Department of Geriatrics University of Arkansas for Medical Sciences(UAMS)Little RockAR 72202USA Arkansas children's Hospital Research Institute(AcHRI) Little RockAR 72202USA

Foot ulceration is one of the most debilitating complications associated with diabetes,but its cause remains poorly *** studies have been undertaken to understand healing kinetics or find possible therapies to enhance ***,few studies have been directed at understanding the immunological alterations that could influence wound healing in *** this study,we analysed the T-cell receptor(TcR)repertoire diversity in TcR-αβ^(+)T *** also analysed the distribution and phenotype of T cells obtained from the peripheral blood of healthy controls and diabetic individuals with or without foot *** results showed that diabetic individuals,especially those with foot ulcers,have a significantly lower naive T-cell number and a poorer TcR-Vβrepertoire *** also showed that the reduced TcR-Vβrepertoire diversity in diabetic individuals was mainly owing to the accumulation of effector T cells,the major source of tumour necrosis factor-αproduction,which was even more pronounced in patients with acute foot ***,the expression of several inflammatory chemokine receptors was significantly reduced in diabetic *** conclusion,effector T-cell accumulation and TcR repertoire diversity reduction appear to precede the development of foot *** finding may open new immunological therapeutic possibilities and provide a new prognostic tool in diabetic wound care.

关键词： diabetes T-cells T-cell repertoire diversity wound healing

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Best practices for electrochemical characterization of supercapacitors

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journal of Energy chemistry 2023年第5期80卷 265-283,I0007页

作者： joão Pedro Aguiar dos Santos Fernando cesar Rufino joǎo IYutaka ota Rodolfo cFernandes Rafael Vicentini cesar JBPagan Leonardo Morais Da Silva Hudson Zanin Brazilian Renewable Energies Center for Innovation on New EnergiesSchool of Electrical and Computer EngineeringUniversity of CampinasSP 13083-852Brazil School of Electrical and computer Engineering University of CampinasSP 13083-852Brazil Department of chemistry Laboratory of Fundamental and Applied ElectrochemistryFederal University of Jequitinhonha e Mucuri's ValleyRodovia MGT 367km 5835000Alto da Jacuba39100-000 DiamantinaMGBrazil

We discuss here essential aspects of the experimental supercapacitors characterization by a series of well-known electrochemical *** are motivated by a considerable number of publications that misreport procedures and *** often conceal or neglect essential information about the electrochemical analytical apparatus used and its *** lack of such information may lead researchers,especially inexperienced ones,to misunderstand the procedures and ***,the misled electrochemical equipment configuration favors misinterpretation of data and low reproducibility *** paper aims to highlight these issues and clarify *** explain fundamental concepts of some electrochemical analytical methods,such as cyclic voltammetry,galvanostatic charge-discharge,single potential step chronoamperometry,and electrochemical impedance spectroscopy,focusing on the supercapacitor *** configurations of electrical parameters are presented and discussed to highlight the effects of incorrect setup and uncover misleading *** discuss how the electrochemical setup and data analyses matter in reliable data results for the supercapacitor.

关键词： Supercapacitor Electrochemical instrumentation Electrochemical methods Electrochemistry

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The Role of Logistics’ Information and communication Technologies in Promoting competitive Advantages of the Firm

The Role of Logistics’ Information and Communication Techno...

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2007战略管理国际会议

作者： Susana Garrido azevedo joo Ferreira joo Leito School of Management University of Beira Interior School of Economics University of Beira Interior

With the rapid growth of technologies,our economic society and life are changing significantly in the 21 st *** way to capture their competitive advantage has become the most important issue for enterprises in the rapidly changing and uncertain business *** researches have pointed out that the adoption of technology is the most important tool for enterprises to keep their competitive *** survival of an enterprise in the age of knowledge-baSed economy depends on how to improve their technological capability.

关键词： IcT Logistics and competitiveness

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Sensors Applied to Plant Breeding: Leaf Reflectance Indices (LRIs) and Resistance to Anthracnose in capsicum annuum L. var. annuum

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Advances in Remote Sensing 2024年第1期13卷 1-17页

作者： Rosimara Barboza Bispo Maria Do Socorro Bezerra Araújo Antônio André da Silva Alencar cláudia Pombo Sudré Rosana Rodrigues Plant Breeding Laboratory Darcy Ribeiro North Fluminense State University Campos dos Goytacazes Brazil Plant Breeding Laboratory University of the State of Mato Grosso Cáceres Brazil

The present work investigated the efficiency of leaf reflectance indices in the identification of capsicum annuum L. var. annuum resistant to anthracnose in the fruit. Twenty-five F5:6 families originating from contrasting parents were assessed;the parents were accession UENF 2285 (susceptible to anthracnose) and accession UENF 1381, a hot pepper resistant to anthracnose in the fruit. The experiment was carried out in an experimental field in campos dos Goytacazes, Rio de Janeiro, Brazil, between May and october of 2021. The treatments were arranged in a randomized block design, with three replications and five plants per plot. Fifteen LRIs were estimated using a cI-710 portable mini leaf spectrometer. The assessments covered all plant growth after flowering, and a total of six assessments were performed at 15-days intervals, beginning at 35 and ending 120 days after flowering (DAFs). Analysis of variance in a split-plot scheme was performed, as were tests of mean groupings and principal components analysis (PcA). The best period for evaluating leaf reflectance indices in c. annuum var. annuum is 120 days after flowering. The leaf reflectance indices PRI, cNDVI and ctr2 stood out as effective in distinguishing between resistant and susceptible genotypes.

关键词： Phenotyping Bell Pepper cI-710 colletotrichum scovillei

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