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Unveiling the controversial mechanism of reversible Na storage in TiO2 nanotube arrays： Amorphous versus anatase TiO2

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Nano Research 2017年第8期10卷 2891-2903页

作者： federico bella Ana B. Munoz-Garcia Giuseppina Meligrana Andrea Lamberti Matteo Destro Michele Pavone Claudio Gerbaldi GAME Lab CHENERGY Group Department of Applied Science and Technology - DISAT Politecnico di Torino Corso Duca degli Abruzzi 24 10129 Torino Italy Department of Chemical Sciences University of Naples Fedefico II Via Cintia 21 University Campus of Monte Sant'Angelo 80126 Napoli Italy MPMNT Group Department of Applied Science and Technology - DISAT Politecnico di Torino Corso Duca degli Abruzzi 24 10129 Torino Italy LITHOPS S.r.l. Strada del Portone 61 10137 Torino Italy

Due to their inherent safety, low cost, and structural stability, TiO2 nanostructures represent a suitable choice as anode materials in sodiumion batteries. In the recent years, various hypotheses have been proposed regarding the actual mechanism of the reversible insertion of sodium ions in the TiO2 structure, and previous reports are often controversial in this respect. Interestingly, when tested as binder- and conducting additive-free electrodes in laboratory-scale sodium cells, amorphous and crystalline （anatase） TiO2 nanotubular arrays obtained by simple anodic oxidation exhibit peculiar and intrinsically different electrochemical responses. In particular, after the initial electrochemical activation, anatase TiO2 shows excellent rate capability and very stable long-term cycling performance with larger specific capacities, and thus a clearly superior response compared with the amorphous counterpart. To obtain deeper insight, the present materials are thoroughly characterized by scanning electron microscopy and ex situ X-ray diffraction, and the insertion of sodium ions in the TiO2 bulk phases is systematically modeled by density functional theory calculations. The present results may contribute to the development of more systematic screening approaches to identify suitable active materials for highly efficient sodium-based energy storage systems.

关键词： sodium battery TiO2 nanotube array anode modeling insertion mechanism

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Improved Lattice Boltzmann Without Parasitic Currents for Rayleigh-Taylor Instability

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Communications in Computational Physics 2010年第3期7卷 423-444页

作者： Daniele Chiappini Gino bella Sauro Succi federico Toschi Stefano Ubertini University of Rome Tor Vergata Via del Politecnico 1I-00133RomeItaly IAC-CNR Viale del Policlinico 137I-00161RomeItaly Department of Physics and Department of Mathematics and Computer Science Eindhoven University of Technology5600 MB EindhovenThe Netherlands University of Naples Parthenope Isola C4-Centro DirezionaleI-80143NaplesItaly

Over the last decade the Lattice Boltzmann Method (LBM) has gained significant interest as a numerical solver for multiphase flows. However most of the LBvariants proposed to date are still faced with discreteness artifacts in the form of spurious currents around fluid-fluid interfaces. In the recent past, Lee et al. have proposeda new LB scheme, based on a higher order differencing of the non-ideal forces, whichappears to virtually free of spurious currents for a number of representative *** this paper, we analyze the Lee method and show that, although strictly speaking, itlacks exact mass conservation, in actual simulations, the mass-breaking terms exhibita self-stabilizing dynamics which leads to their disappearance in the long-term evolution. This property is specifically demonstrated for the case of a moving droplet atlow-Weber number, and contrasted with the behaviour of the Shan-Chen model. Furthermore, the Lee scheme is for the first time applied to the problem of gravity-drivenRayleigh-Taylor instability. Direct comparison with literature data for different values of the Reynolds number, shows again satisfactory agreement. A grid-sensitivitystudy shows that, while large grids are required to converge the fine-scale details, thelarge-scale features of the flow settle-down at relatively low resolution. We concludethat the Lee method provides a viable technique for the simulation of Rayleigh-Taylorinstabilities on a significant parameter range of Reynolds and Weber numbers.

关键词： Lattice-Boltzmann multiphase parasitic currents Rayleigh-Taylor Instability

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Touristic urbanization and greening of coastal dune fields:A long-term assessment of a temperate sandy barrier of Argentina

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Journal of Geographical Sciences 2025年第1期 206-230页

作者： GARZO Pedro Andrés DADON José Roberto ISLA federico Ignacio Instituto de Investigaciones Marinas y Costeras (IIMyC-CONICET/UNMDP) Instituto de Geología de Costas y del Cuaternario Dr.Enrique J.Schnack (IGCC-CIC/UNMDP) Universidad de Buenos Aires Facultad de Arquitectura Dise?o y Urbanismo Centro de Investigaciones Gestión de Espacios Costeros (GEC-FADU/UBA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)

Dune barrier systems represent highly sought-after coastal landscapes for tourism and urban development around the world. However, a century ago, they were considered hazardous environments due to their great dynamic nature. As a result, stabilization practices were considered necessary. The systematic introduction of fast-growing exotic trees helped stabilize the sand, making it easier for tourism urbanization to take place, but also leading to erosion processes. This paper aims to assess long-term changes in vegetation cover over a large temperate barrier in Argentina. This complex region includes urban resorts, afforestation zones, and protected areas. A GIS-based geospatial analysis was conducted using a large satellite database(> 350 images), and the future evolution of the vegetation was modeled. The results revealed two primary spatiotemporal patterns associated with a gradual expansion of vegetation cover, accompanied by a concurrent reduction in sandy areas. In 1986, the dune area comprised 75% more surface than vegetation, whereas in 2021, it represented 60% less than vegetation. Furthermore, the 2050 scenario suggests a potential 40% reduction of dunes in certain areas. It is necessary to enhance management actions aimed at maintaining dune mobility and ensuring local and regional sediment balance. Long-term management strategies must focus on restoring native plant communities and controlling invasive species, and avoiding new dune fixation initiatives based on the introduction of exotic species.

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Algebro-geometrical orientifold and IR dualities

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Communications in Theoretical Physics 2023年第12期75卷 44-56页

作者： federico Manzoni Mathematics and Physics Department Roma TreVia della Vasca Navale 84RomeItaly INFN Roma Tre section Physics DepartmentVia della Vasca Navale 84RomeItaly

Orientifold projections are an important ingredient in the geometrical engineering of Quantum Field ***,an orientifold can break down the superconformal symmetry and no new superconformal fixed points are admitted(scenario Ⅱ);nevertheless,in some cases,dubbed scenarios Ⅰ and Ⅲ orientifold,a new IR fixed point is achieved and,for scenario Ⅲ examples,some still not fully understood IR duality seems to *** we give an algebro-geometrical point of view of orientifold for toric varieties and we propose the existence of relevant operators that deform the starting oriented Conformal Field Theory triggering a *** briefly discuss a possible holographic description of this flow.

关键词： non-perturbative orientifold IR dualities toric geometry RG flow

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γγ interactions with KLOE

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Chinese Physics C 2010年第6期34卷 795-800页

作者： federico Nguyen INFN Sezione 'Roma TRE'

Studies of γγ interactions are performed with the KLOE detector, without tagging of the outgoing e^＋e^-. The data sample is from an integrated luminosity of 240 pb^-1. It was collected at the φ-factory DAONE with e^＋e^- beams colliding at √s ≌1 GeV, below the φ resonance peak. We present preliminary results concerning the observation of the γγ→η process and the evidence for γγ→π^0π^0 production at low π^0π^0 invariant masses.

关键词： e^+e^- collisions pseudoscalar meson width π pair production

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Colored bicycle lanes and intersection treatments:International overview and best practices

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Journal of Traffic and Transportation Engineering(English Edition) 2021年第3期8卷 399-420页

作者： federico Autelitano Felice Giuliani Department of Engineering and Architecture University of ParmaParma 43124Italy

The use of colored pavements for bicycle facilities represents an interesting strategy for supporting the implementation of a high-quality cycling network. The distinctive coloration of dedicated lanes, tracks or shared paths provides a clearly delineated route, making the infrastructure more attractive as well as legible and intuitive, especially through intersections and junctions. The additional emphasis resulting from the coloring enhances a change in the road users' behavior, but its safety effectiveness seems to be particularly related to several site-specific contextual features. Although some of these benefits are well established and multiple applications of colored pavements are widespread around the world, most of cycling design standards and guides, which are usually written only in the language of the country that drafted them and are often difficult to find, completely lack in technical recommendations and concepts regarding the use of color for cycling ***, based on an extensive worldwide literature search from more than 80 official design guidelines, manuals and standards and 50 scientific articles, the authors have structured a guided overview of the state of the art/practice concerning the use of color for bike facilities at the international level, including the latest innovative and experimental schemes. The review is not intended to be a summary of manuals, but is conceived as a decision-makers' and designers' tool for a rational planning, construction, maintenance and management of colored cycling infrastructures, able to favor a cultural and technical interchange. After a first section in which the main locations where to use colored surfaces were highlighted(corridor or spot treatments), the commonly used colors(red, green and blue) have been identified, explaining the hierarchical and/or combined reasons(regulatory and legal limitations, visual-perceptual aspects and application/maintenance requirements) behind this choice. Final

关键词： Road engineering Colored pavement Bike facility Cycling infrastructure Conflict point Safety

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Ion channels in neurodevelopment:lessons from the Integrin-KCNB1 channel complex

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Neural Regeneration Research 2023年第11期18卷 2365-2369页

作者： Alessandro Bortolami federico Sesti Department of Neuroscience and Cell Biology Robert Wood Johnson Medical SchoolRutgers UniversityWest PiscatawayNJUSA

Ion channels modulate cellular excitability by regulating ionic fluxes across biological *** mutations in ion channel genes give rise to epileptic disorders that are among the most frequent neurological diseases affecting millions of individuals *** are trigge red by an imbalance between excitatory and inhibitory ***,pathogenic mutations in the same allele can give rise to loss-of-function and/or gain-of-function va riants,all able to trigger ***,certain alleles are associated with brain malformations even in the absence of a clear electrical *** body of evidence argues that the underlying epileptogenic mechanisms of ion channels are more diverse than originally *** focusing on ion channels in prenatal cortical development have shed light on this apparent *** picture that emerges is that ion channels play crucial roles in landmark neurodevelopmental processes,including neuronal migration,neurite outgrowth,and synapse ***,pathogenic channel mutants can not only cause epileptic disorders by alte ring excitability,but further,by inducing morphological and synaptic abnormalities that are initiated during neocortex formation and may persist into the adult brain.

关键词： developmental and epileptic encephalopathies epilepsy K+channel KCNB1 Kv2.1 neurodevelopment potassium channel

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Tuning of frictional properties in torsional contact by means of disk grading

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Friction 2022年第5期10卷 787-802页

作者： Gianluca COSTAGLIOLA federico BOSIA Nicola M PUGNO Civil Engineering Institute Ecole Polytechmique Federale de LausamneLausanne 1015Switzerland Department ofApplied Science and Technology Politecnico di TorinoCorso Duca degli Abruzzi 24Torino 10129Italy Laboratory for BioinspiredBionicNanoMeta Materials&MechanicsDepartment of CivilEnvironmental and Mechanical EngineeringUniversity of TrentoTrento 38123Italy School of Engineering and Materials Science Queen Mary University of LondonLondon EI 4NSUK

The contact of two surfaces in relative rotating motion occurs in many practical applications,from mechanical devices to human joints,displaying an intriguing interplay of effects at the onset of sliding due to the axisymmetric stress *** and numerical models have been developed for some typical configurations,but work remains to be done to understand how to modify the emergent friction properties in this *** this paper,we extend the two-dimensional(2D)spring-block model to investigate friction between surfaces in torsional *** investigate how the model describes the behavior of an elastic surface slowly rotating over a rigid substrate,comparing results with analytical calculations based on energy *** show that an appropriate grading of the tribological properties of the surface can be used to avoid a non-uniform transition to sliding due to the axisymmetric configuration.

关键词： friction torsion numerical simulations grading

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Temperature-and vacancy-concentration-dependence of heat transport in Li_(3)ClO from multi-method numerical simulations

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npj Computational Materials 2022年第1期8卷 197-205页

作者： Paolo Pegolo Stefano Baroni federico Grasselli SISSA—Scuola Internazionale Superiore di Studi Avanzati 34136TriesteItaly CNR-Istituto Officina dei Materiali SISSA34136TriesteItaly COSMO—Laboratory of Computational Science and Modelling IMXÉcole Polytechnique Fédérale de Lausanne1015LausanneSwitzerland

Despite governing heat management in any realistic device,the microscopic mechanisms of heat transport in all-solid-state electrolytes are poorly known:existing calculations,all based on simplistic semi-empirical models,are unreliable for superionic conductors and largely overestimate their thermal *** this work,we deploy a combination of state-of-the-art methods to calculate the thermal conductivity of a prototypical Li-ion conductor,the Li_(3)ClO *** leveraging ab initio,machine learning,and force-field descriptions of interatomic forces,we are able to reveal the massive role of anharmonic interactions and diffusive defects on the thermal conductivity and its temperature dependence,and to eventually embed their effects into a simple rationale which is likely applicable to a wide class of ionic conductors.

关键词： transport conductivity eventually

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Forecasting Zonda Wind Occurrence with Vertical Sounding Data

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Advances in Atmospheric Sciences 2022年第1期39卷 161-177页

作者： federico OTERO Diego C.ARANEO Instituto Argentino de Nivología Glaciología y Ciencias Ambientales(IANIGLA)CCT Mendoza-CONICET Av.Ruiz Leal s/n.Parque Gral.San MartínMendoza 5500Argentina

Zonda wind is a typical downslope windstorm over the eastern slopes of the Central Andes in Argentina,which produces extremely warm and dry conditions and creates substantial socioeconomic *** aim of this work is to obtain an index for predicting the probability of Zonda wind *** Principal Component Analysis(PCA)is applied to the vertical sounding data on both sides of the *** the use of a binary logistic regression,the PCA is applied to discriminate those soundings associated with Zonda wind events from those that are not,and a probabilistic forecasting tool for Zonda occurrence is *** index is able to discriminate between Zonda and non-Zonda events with an effectiveness close to 91%.The best model consists of four variables from each side of the *** an eventbased statistical perspective,the probability of detection of the mixed model is above 97%with a probability of false detection lower than 7%and a missing ratio below 1%.From an alarm-based perspective,models exhibit false alarm rate below 7%,a missing alarm ratio lower than 1.5%and higher than 93%for the correct alarm *** zonal component of the wind on both sides of the Andes and the windward temperature are the key variables in class *** vertical structure of Zonda wind includes two wind maximums and an unstable lapse rate at midlevels on the lee side and a wind maximum at 700 h Pa accompanied by a relatively stable layer near the mountain top.

关键词： Zonda wind foehn downslope windstorm forecasting

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