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Scaling Properties of Field-Induced Superdiffusion in Continuous Time Random Walks

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Communications in Theoretical Physics 2014年第10期61卷 514-520页

作者： R.Burioni G.Gradenigo A.Sarracino A.Vezzani A.Vulpiani dipartimento di fisica e Scienza della Terra Università degli Studi di Parma and INFNGruppo Collegato di Parmaviale G.P.Usberti 7/A43126 ParmaItaly Kavli Institute for Theoretical Physics Institut de Physique Théorique CEA SaclayF-91191 Gif-sur-Yvette CedexFrance Laboratoire de Physique Théorique et Modèles Statistiques CNRS et Université Paris-Sud 1191405 Orsay CedexFrance ISC-CNR and dipartimento di fisica Università Sapienzap.le A.Moro 200185 RomaItaly Laboratoire de Physique Théorique de la Matière Condensée CNRSUniversité Paris 64 Place Jussieu75255 Paris CedexFrance Centro S3 CNR-NanoscienzeVia Campi 213A41125 ModenaItaly dipartimento di fisica Università Sapienza and ISC-CNRp.le A.Moro 200185 RomaItaly

We consider a broad class of Continuous Time Random Walks(CTRW) with large fluctuations effects in space and time distributions: a random walk with trapping, describing subdiffusion in disordered and glassy materials,and a L′evy walk process, often used to model superdiffusive effects in inhomogeneous materials. We derive the scaling form of the probability distributions and the asymptotic properties of all its moments in the presence of a field by two powerful techniques, based on matching conditions and on the estimate of the contribution of rare events to power-law tails in a field.

关键词： anomalous diffusion CTRW L′evy walks

Assessment of earthquake location uncertainties for the design of local seismic networks

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Earthquake Science 2024年第5期37卷 415-433页

作者： Antonio Fuggi Simone Re Giorgio Tango Sergio Del Gaudio Alessandro Brovelli Giorgio Cassiani Isamgeo Italia S.r.l. Gallarate 21013Italy STOGIT S.p.A. UnitàGiacimentiCrema 26013Italy dipartimento di Geoscienze Universitàdegli Studi di PadovaPadova 35131Italy

The ability to estimate earthquake source locations,along with the appraisal of relevant uncertainties,is paramount in monitoring both natural and human-induced *** this purpose,a monitoring network must be designed to minimize the location errors introduced by geometrically unbalanced *** this study,we first review different sources of errors relevant to the localization of seismic events,how they propagate through localization algorithms,and their impact on *** then propose a quantitative method,based on a Monte Carlo approach,to estimate the uncertainty in earthquake locations that is suited to the design,optimization,and assessment of the performance of a local seismic monitoring *** illustrate the performance of the proposed approach,we analyzed the distribution of the localization uncertainties and their related dispersion for a highly dense grid of theoretical hypocenters in both the horizontal and vertical directions using an actual monitoring network *** results expand,quantitatively,the qualitative indications derived from purely geometrical parameters(azimuthal gap(AG))and classical detectability *** proposed method enables the systematic design,optimization,and evaluation of local seismic monitoring networks,enhancing monitoring accuracy in areas proximal to hydrocarbon production,geothermal fields,underground natural gas storage,and other subsurface *** approach aids in the accurate estimation of earthquake source locations and their associated uncertainties,which are crucial for assessing and mitigating seismic risks,thereby enabling the implementation of proactive measures to minimize potential *** an operational perspective,reliably estimating location accuracy is crucial for evaluating the position of seismogenic sources and assessing possible links between well activities and the onset of seismicity.

关键词： network design earthquake localization detectability localization uncertainties local seismic network

Microscopic insight into the single step growth of in-plane heterostructures between graphene and hexagonal boron nitride

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Nano Research 2019年第3期12卷 675-682页

作者： Thanh Hai Nguyen Daniele Perilli Mattia Cattelan Hongsheng Liu Francesco Sedona Neil A. Fox Cristiana di Valentin Stefano Agnoli Department of Chemical Science University of Padova Via Francesco Marzolo 1 35131 Padova Ita dipartimento di Scienza dei Materiali Universita di Milano-Bicocca via R. Cozzi 55 20125 Milano Italy School of Chemistry University of Bristol Cantocks Close Bristol BS81TS UK

Graphene-h-BN hybrid nanostructures are grown in one step on the Pt(111) surface by ultra-high vacuum chemical vapor deposition using a single precursor,the dimethylamino borane *** varying the deposition conditions,different nanostructures ranging from a fully continuous hybrid monolayer to well-separated Janus nanodots can be *** growth starts with heterogeneous nucleation on morphological defects such as Pt step edges and proceeds by the addition of small clusters formed by the decomposition of the dimethylamino borane *** tunneling microscopy measurements indicate that a sharp zigzag in-plane boundary is formed when graphene grows aligned with the Pt substrate and consequently with the h-BN layer as *** graphene is rotated by 30°,the graphene armchair edges are seamlessly connected to h-BN zigzag *** is confirmed by a thorough density functional theory (DFT) *** resolved photoemission spectroscopy (ARPES) data suggests that both h-BN and graphene present the typical electronic structure of self-standing non-interacting materials.

关键词： graphene h-BN heterostructures seanning tunneling microscopy density functional theory (DFT)

Extra food provisioning does not affect behavioral lateralization in nestling lesser kestrels

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Current Zoology 2023年第1期69卷 66-75页

作者： Camilla Soravia Angelo Bisazza Jacopo G.Cecere diego Rubolini Centre for Evolutionary Biology(M092) University of Western Australia35 Stirling HighwayPerthWA 6009Australia Department of General Psychology University of Padovavia Venezia 8Padova I-35131Italy padova Neuroscience Center University of PadovaVia Orus 2/BPadova I-35129Italy ISPRA—The Italian Institute for Environmental Protection and Research via CàFornacetta 9Ozzano dell’EmiliaBologna I-40064Italy dipartimento di Scienze e Politiche Ambientali Universitàdegli Studi di Milanovia Celoria 26MilanoI-20133Italy Istituto di Ricerca Sulle Acque IRSA-CNRVia del Mulino 19Brugherio I-20861Italy

Costs and benefits of brain lateralization may depend on environmental *** evidence indicates that the development of brain functional asymmetries is adaptively shaped by the environmental conditions experienced during early *** availability early in life could act as a proxy of the environmental conditions encountered during adulthood,but its potential modulatory effect on lateralization has received little *** increased food supply from egg laying to early nestling rearing in a wild population of lesser kestrels Falco naumanni,a sexually dimorphic raptor,and quantified the lateralization of preening behavior(head turning direction).As more lateralized individuals may perform better in highly competitive contexts,we expected that extra food provisioning,by reducing the level of intra-brood competition for food,would reduce the strength of *** found that extra food provisioning improved nestling growth,but it did not significantly affect the strength or direction of nestling *** addition,maternal body condition did not explain variation in nestling *** of extra food provisioning,the direction of lateralization differed between the sexes,with female nestlings turning more often toward their *** findings indicate that early food availability does not modulate behavioral lateralization in a motor task,suggesting limited phenotypic plasticity in this trait.

关键词： development laterality preening raptor sex-differences

A Comparison between Abraham and Minkowski Momenta

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Journal of Modern Physics 2016年第3期7卷 320-328页

作者： Massimo Testa dipartimento di fisica Università degli Studi di Roma “La Sapienza” INFN—Sezione di Roma IPiazzale A. Moro 2 Roma Italy

In this paper I compare the Abraham and the Minkowski forms for the momentum pertaining to an electromagnetic wave inside a dielectric or a magnetic material. The discussion is based on a careful treatment of the surface charges and currents and of the forces acting on them. While in the dielectric case the Abraham momentum is certainly more appealing from the physical point of view, for a magnetic material it suggests an interpretation in terms of magnetic charges and related magnetic currents. The Minkowski momentum for magnetic non conducting materials, on the contrary, has a natural interpretation in terms of an amperian model, in which the dynamics is determined by the Lorentz force acting on bulk and surface electric currents.

关键词： Abraham-Minkowski Controversy Forces on dielectric and Magnetic Materials Snell’s Law

The spin-isospin decomposition of the nuclear symmetry energy from low to high density

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Chinese Physics C 2020年第5期44卷 114-118页

作者： Wenmei Guo M.Colonna V.Greco U.Lombardo H.-JSchulze Department of Physics Anhui Normal UniversityWuhu 241000China Laboratori Nazionali del Sud(infn) Via S.Sofia 6295123 CataniaItaly dipartimento di fisica e Astronomia Via S.Sofia 6495123 CataniaItaly infn Sezione di CataniaVia S.Sofia 6295123 CataniaItaly

The energy per particle BA in nuclear matter is calculated up to high baryon density in the whole isospin asymmetry range from symmetric matter to pure neutron *** results,obtained in the framework of the Brueckner-Hartree-Fock approximation with two-and three-body forces,confirm the well-known parabolic dependence on the asymmetry parameterβ=(N?Z)/A(β^2 law)that is valid in a wide density *** investigate the extent to which this behavior can be traced back to the properties of the underlying interaction,aside from the mean field approximation,the spin-isospin decomposition of BA is *** indications suggest that theβ^2 law could be violated at higher densities as a consequence of the three-body *** raises the problem that the symmetry energy,calculated according to theβ^2 law as a difference between BA in pure neutron matter and symmetric nuclear matter,cannot be applied to neutron *** should return to the proper definition of the nuclear symmetry energy as a response of the nuclear system to small isospin imbalance from the Z=N nuclei and pure neutron matter.

关键词： symmetry energy nuclear interaction spin-isospin decomposition nuclear matter

In-Medium Nucleon-Nucleon Cross Section

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Chinese Physics Letters 1996年第6期13卷 420-423页

作者： CAI Yan-huang SONG Hong-qiu U.Lombardo China Center of Advanced Science and Technology(World Laboratory) P.O.Box 8730Beijing 100080 Institute of Nuclear Research Chinese Academy of SciencesShanghai 201800 infn Sezion and dipartimento di fisica 57 Corso Italia95129 CataniaItaly

Within the framework of Brueckner-Hartree-Fock method,the in-medium nucleonnucleon(NN)cross section is *** base our investigation on a separable Paris potential for the NN interaction and a continuous choice for the single particle *** is found that the in-medium cross section is strongly modified by medium *** particular,with increasing of nuclear density,the cross sections *** indicates a proper treatment of the density dependence of the in-medium NN cross sections is important.

关键词： spectrum. effect. cross

Three-body Rearrangement Effect on Single Particle Properties in Nuclear Matter

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2006年第1期 7-8页

作者： Zuo Wei U. Lombardo 不详 dipartimento di fisica Universita di Catania and INFN-LNS Catania Italy.

Indoor Radon Concentrations in Dwellings of Ischia Island

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Journal of Environmental Protection 2013年第8期4卷 37-39页

作者： Mariagabriella Pugliese Maria Quarto Filomena Loffredo Agostino Mazzella Vincenzo Roca 1dipartimento di fisica Università di Napoli Federico II Naples Italy 2Istituto Nazionale di fisica Nucleare (infn) Sezione di Napoli Naples Italy dipartimento di fisica Università di Napoli Federico II Naples Italy Liceo Statale Ischia Naples Italy

Indoor radon concentration measurements were performed in dwellings of Ischia island (South Italy) using commercial E-Perm devices in LST configuration. The average concentrations in the dwellings were found to vary from 125 to 865 Bq/m3 with an average of 354 ± 176 Bq/m3. This value is higher than Italian National average that is 75 Bq/m3 and Campanian average that is 95 Bq/m3. Correlation between indoor radon concentration measurements and floor level of monitored room was also studied.

关键词： Radon E-Perm Floor Level