检索结果-南通市图书馆

Assessment of slow deformations and landslide modelling in the urban area through a multi-methodological approach

Journal of earth Science 2024年

作者： Fabio Ietto Massimo Conforti Cristiano Tolomei Federico Cella Giuseppe Cianflone Università degli Studi della Calabria， dipartimento di Biologia， ecologia e scienze della Terra (diBeST)， Via P.Bucci， Cubo 15B， 87036 Consiglio Nazionale Ricerche (CNR)， Istituto di Ricerca per la Protezione Idrogeologica (IRPI)， Via Cavour INGV-Istituto Nazionale di Geofisica e Vulcanologia， Via di Vigna Murata 605 Università di Camerino， scuola di scienze e tecnologia， Sez.Geologia， Via Gentile III da Varano 27

Slow-moving landslides are widespread in the Mediterranean area， causing damage to the exposed facilities and economic losses in many countries. The recognition of slow-moving landslides in urban areas is always a difficult task to deal with because the presence of buildings， infrastructures， and human activities usually conceals the morphological signs of these landslide activities. So， in the last decades， numerous researchers have shown new methodologies to deepen the studies of similar instability phenomena. The present research is based on an integrated approach to investigate the landslide boundaries， type of movement， failure surface depth， and vulnerability state of buildings in Rota Greca village (Calabria region， southern Italy) affected by a slow-moving landslide. For this purpose， multi-source data were acquired through geological and geomorphological surveys， recognition of landslide-induced damage on the built environment， subsurface investigations (e.g.， continuous drill boreholes， Standard Penetration Test， Rock Quality Designation index and inclinometer monitoring)， laboratory tests (direct shear tests on undisturbed samples)， geophysical survey， and InSAR-derived map of deformation rates. The complete integration of multi-source data allowed for the construction of reliable landslide modelling with relative geotechnical properties. In addition， the cross-comparison between surface deformation data by SAR images and severity damage level collected on the exposed buildings enabled to obtain the vulnerability map of the built area. In particular， the achieved goals highlighted two failure surfaces at about -13 and -25 m depth， causing a high vulnerability value for the buildings allocated in the central portion of the Rota Greca village. The knowledge acquired by the multi-approach can be used to manage and implement appropriate landslide risk mitigation strategies， providing helpful advice and best practices to state-run organisations and stakeholder

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Ionic Interactions in Molecular and Liquid States ofPolyvalent Metal Halides

引用

Journal of Materials Science & Technology 1999年第4期15卷 303-306页

作者： M.P.Tosi(Instituto Nazionale di Fisica della Materia and Classe di scienze, scuola Normate Superiore,I-56126 Pisa, Italy)e-mail: tosim@bib.sns.it Institute Nazionale di Fisica della Materia and Classe di scienze Scuola Normale Superiore I-56126 Pisa Italy

Progress in the development of phenomenological models for the microscoplc interactions in the halides of polyvalent metals is reviewed, with main attention to neutral and ionized molecular states and to the melts of these materials. The following physical problems are discussed: (1)bond bending in the molecules of the alkaline-earth halides, (2) binding of molecular dimers and halogen transfer reactions relevant to the melts of trivalent metal halides, (3) stability of molecular ions in liquid mixtures of polyvalent metal halides and alkali halides, and (4) stabilityof molecular ions and reduced-valence states in molten cryolite under addition of sodium metal.

关键词： Cl NaF Ionic Interactions in Molecular and Liquid States ofPolyvalent Metal Halides Rev

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Kinetic Density Functional Theory: A Microscopic Approach to Fluid Mechanics

引用

Communications in Theoretical Physics 2014年第10期61卷 596-606页

作者： Umberto Marini Bettolo Marconi Simone Melchionna scuola di scienze e Tecnologie Università di CamerinoVia Madonna delle Carceri62032CamerinoINFN PerugiaItaly Istituto Processi Chimico-Fisici Consiglio Nazionale delle RicercheItaly

In the present paper we give a brief summary of some recent theoretical advances in the treatment of inhomogeneous fluids and methods which have applications in the study of dynamical properties of liquids in situations of extreme confinement, such as nanopores, nanodevices, etc. The approach obtained by combining kinetic and density functional methods is microscopic, fully self-consistent and allows to determine both configurational and flow properties of dense fluids. The theory predicts the correct hydrodynamic behavior and provides a practical and numerical tool to determine how the transport properties are modified when the length scales of the confining channels are comparable with the size of the molecules. The applications range from the dynamics of simple fluids under confinement, to that of neutral binary mixtures and electrolytes where the theory in the limit of slow gradients reproduces the known phenomenological equations such as the Planck–Nernst–Poisson and the Smolochowski equations. The approach here illustrated allows for fast numerical solution of the evolution equations for the one-particle phase-space distributions by means of the weighted density lattice Boltzmann method and is particularly useful when one considers flows in complex geometries.

关键词： Kinetic theory dynamical density functional theory electrokinetics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Climatic and anthropogenic factors explain the variability of Fagus sylvatica treeline elevation in fifteen mountain groups across the Apennines

引用

Forest ecosystems 2020年第1期7卷 51-63页

作者： Giuliano Bonanomi Maurizio Zotti Valentina Mogavero Gaspare Cesarano Luigi Saulino Angelo Rita Giulio Tesei Marina Allegrezza Antonio Saracino emilia Allevato dipartimento di Agraria Universitàdi Napoli Federico Ⅱvia Università10080055 PorticiNAItaly scuola di scienze Agrarie ForestaliAlimentari e AmbientaliUniversitàdella BasilicataViale dell’Ateneo Lucano 1085100 PotenzaItaly dipartimento di scienze Agrarie Alimentari e AmbientaliUniversitàPolitecnica delle Marchevia Brecce Bianche60100 AnconaItaly.

Background:Fagus sylvatica forms the treeline across the Apennines mountain range,with an average elevation of 1589 *** studies evidenced that the current position of the treeline in the Apennines is heavily depressed as a result of a complex interaction between climatic factors and the past human *** this study we correlated treeline elevation in the fifteen major mountain groups in the Apennines with selected climatic,geomorphological,and human disturbance variables in order to investigate in detail the site-specific features affecting the current treeline ***:Treeline elevation was lowest in the North Italy(Apuan Alps),while the highest treeline was found in Central Italy(Simbruini).An absolute maximum treeline elevation of *** exceeding *** found on 13 mountain peaks in Central and Southern ***,treeline elevation was largely lower on warmer south-facing slopes compared to northern slopes,with values several hundred meters lower in the Gran Sasso and *** the causes of this pattern are still unknown,we argue that treeline elevation on southfacing slopes may be limited by the combination of climatic constraints(*** drought)and human *** of a pervasive anthropogenic effect depressing treeline elevation was found in the North(Apuan Alps)Central(Gran Sasso,Velino-Sirente,Sibillini)and Southern part of Apennines(Pollino).By contrast,treeline elevation of the Laga,Simbruini,and Orsomarso mountain groups appears less affected by past anthropogenic ***,we recorded in the several mountain groups(***,Marsicani and Pollino)the coexistence of very depressed treelines just a few kilometers away from much higher treelines,among the highest ever recorded for ***:Finally,we argue that *** treeline across the Apennines is locally shaped both by the interaction of low temperatures experienced by the species in its earli

关键词： Anthropogenic impact Latitudinal gradient Mean annual temperature Population density Summer drought Winter temperature

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Rhynchophorus ferrugineus attack affects a group of compounds rather than rearranging Phoenix canariensis metabolic pathways

引用

Journal of Integrative Plant Biology 2016年第4期58卷 388-396页

作者： Antonio Giovino Federico Martinelli Sergio Saia Consiglio per la Ricerca in Agricoltura e l'analisi dell'economia agraria(CReA) Unita di ricerca per il recupero e la valorizzazione delle Specie Floricole Mediterranee(CREA-SFM)90011 Bagheria(PA)Italy dipartimento di scienze Agrarie e Forestali(SAF) University of PalermoViale delle ScienzeEdif.490128 PalermoItaly Istituto euromediterraneo di Scienza e tecnologia(IeMeST) Via E.Amari 12390139 PalermoItaly

The red palm weevil（RPW; Rhynchophorus ferrugineus） is spreading worldwide and severely harming many palm species. However, most studies on RPW focused on insect biology, and little information is available about the plant response to the attack. In the present experiment, we used metabolomics to study the alteration of the leaf metabolome of Phoenix canariensis at initial（1^（st） stage） or advanced（2^（nd） stage）attack by RPW compared with healthy（unattacked） *** leaf metabolome significantly varied among treatments. At the 1^（st） stage of attack, plants showed a reprogramming of carbohydrate and organic acid metabolism; in contrast, peptides and lipid metabolic pathways underwent more changes during the 2^（nd） than 1^（st） stage of attack. enrichment metabolomics analysis indicated that RPW attack mostly affected a particular group of compounds rather than rearranging plant metabolic pathways. Some compounds selectively affected during the 1^（st） rather than 2^（nd） stage（e.g. phenylalanine; tryptophan; cellobiose;xylose; quinate; xylonite; idonate; and iso-threonate; cellobiotol and arbutine） are upstream events in the phenylpropanoid,terpenoid and alkaloid biosynthesis. These compounds could be designated as potential markers of initial RPW attack. However,further investigation is needed to determine efficient early screening methods of RPW attack based on the concentrations of these molecules.

关键词： early detection Mediterranean environment metabolomics palms plant borer

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

electromagnetic chirality induced by graphene inclusions in multilayered metamaterials

引用

Photonics Research 2014年第5期2卷 121-125页

作者： Carlo Rizza elia Palange Alessandro Ciattoni dipartimento di Scienza e Alta tecnologia Universitàdell’Insubriavia Valleggio 1122100 ComoItaly Consiglio Nazionale delle Ricerche CNR-SPIN67100 Coppito L’AquilaItaly dipartimento di scienze fisiche e chimiche Universitàdi L’Aquilavia Vetoio67100 Coppito L’AquilaItaly

We theoretically investigate the electromagnetic response of a novel class of multilayered metamaterials obtained by alternating graphene sheets and dielectric layers,the whole structure not exhibiting a plane of reflection symmetry along the stacking *** show that the electromagnetic response of the structure is characterized by a magneto-electric coupling described by an effective chiral *** the intrinsic tunability of graphene–light coupling,we prove that one can tune both the dielectric and the chiral electromagnetic response by varying the graphene chemical potential through external voltage gating.

关键词： parameter. dielectric chiral

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Inactivation of Staphylococcus aureus by the synergistic action of charged and reactive plasma particles

引用

Plasma Science and Technology 2020年第8期22卷 160-166页

作者： espedito VASSALLO Matteo PeDRONI Tiziana SILVeTTI Stefano MORANdi Milena BRASCA CNR Istituto per la Scienza e Tecnologia dei PlasmiVia R.Cozzi 5320125 MilanItaly CNR Istituto di Scienze delle Produzioni AlimentariVia G.Celoria 220133 MilanItaly

In this paper,a low-pressure capacitively coupled plasma discharge sustained in an argonoxygen mixture was studied in order to evaluate its properties in terms of inactivation of Staphylococcus *** plasma parameters as electron temperature and plasma density were measured by the Langmuir probe(Ne≈1015 m^-3,Te≈1.5 eV),while the neutral atom density was in the range of 1021 m^-*** the plasma phase,oxygen radicals were taken as reference of the reactive species with antimicrobial activity,and oxygen spectral lines,over a range of plasma process parameters,were investigated by the optical emission *** plasma conditions were found,and a count reduction of 4 log in a few minutes of the bacterium proves the potentiality of an industrial grade plasma reactor as a sterilization agent.

关键词： Staphylococcus aureus capacitively coupled plasma bacteria decontamination

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hybridized electronic states between CdSe nanoparticles and conjugated organic ligands： A theoretical and ultrafast photo-excited carrier dynamics study

引用

Nano Research 2018年第1期11卷 142-150页

作者： Tersilla Virgili Arrigo Calzolarit Inma Suarez Lopez Alice Ruini Alessandra Catellani1 Barbara Vercelli Francesco Tassone IFN -CNR c o dipartimento di Fisica Politecnico di Milano 20132 Milano Italy Istituto Nanoscienze CNR-NANO-S3 Via Campi 213/A I-41125 Modena Italy dipartimento di scienze Fisiche Informatiche e Matematiche Universit# di Modena e Reggio Emilia Via Campi 213/a I-41125 Modena Italy Istituto di Chimica della Materia Condensata e di Tecnologie per I'energia ICMATE-CNR SS di Milano Via Cozzi 53 20125 Milano Italy Center for Nano Science and Technology @Polimi Istituto Italiano di Tecnologia Via Pascoli 70/3 20133 Milano Italy

Formation of densely packed thin films of semiconductor nanocrystals is advantageous for the exploitation of their unique optoelectronic properties for real-world applications. Here we investigate the fundamental role of the structure of the bridging ligand on the optoelectronic properties of the resulting hybrid film. In particular, we considered hybrid films formed using the same CdSe nanocrystals and two organic ligands that have the same bidentate dithiocarbamate bInding moiety, but differ in their bridging structures, one bridged by ethylene, the other by phenylene that exhibits conjugation. Based on the results of photo- excited carrier dynamics experiments combined with theoretical calculations on the electronic states of bridged CdSe layers, we show that only the phenylene- based ligand presents a strong hybridization of the molecular HOMO state with CdSe layers, that is a marker of formation of an effective bridge. We argue that this hybridization spread favors the hopping of photo-excited carriers between nanocrystals, which may explain the reported larger photo-currents in phenylene-based hybrid films than those observed in ethylene-based ones.

关键词： hybrid layer-by-layer film ultrafast spectroscopy CdSe nanoparticles molecular orbitals density functional theory

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Size contrast of Pt nanoparticles formed on neighboring domains within suspended and supported graphene

引用

Nano Research 2018年第3期11卷 1589-1598页

作者： Dario Roccella Matteo Amati Hikmet Sezen Rosaria Brescia Luca Gregoratti Universita degli Studi di Genova - Facolta di scienze Matematiche Fisiche e Naturali Viale Benedetto XV Genova 3-16132 Italy elettra - Sincrotrone Trieste S.C.p.A. in Area Science Park SS 14-Km 163.5 Trieste 34149 Italy electron Microscopy Facility Istituto Italiano di Tecnologia (liT) via Morego 30 Genova 16163 Italy

The relatively small size of thin （one or few layers） graphene flakes makes it extremely difficult to study the behavior of suspended graphene by characterization techniques other than the electron microscopies. Herein, we exploited the capability of spatially resolved photoemission in combination with high resolution transmission electron microscopy to investigate the interaction of thermally evaporated Pt atoms on suspended and supported graphene. Spectroscopic and microscopic analyses reveal that the nucleation of nanometer- sized Pt particles in these two regions exhibit different trends. While only small nanometer-sized islands are present on the supported graphene, relatively larger clusters of islands were also found on the suspended flakes. The X-ray photoemission C ls core levels acquired after the Pt deposition show an increase in the number of vacancies in the graphene sheets.

关键词： graphene X-ray photoemissionspectroscopy scanning photoelectron microscop nanoparticles platinum suspended films

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

electrical probing of carrier separation in InAs/InP/GaAsSb core-dualshell nanowires

引用

Nano Research 2020年第4期13卷 1065-1070页

作者： Sedighe Salimian Omer Arif Valentina Zannier Daniele ercolani Francesca Rossi Zahra Sadre Momtaz Fabio Beltram Sefano Roddaro Francesco Rossella Lucia Sorba NeST Istituto Nanoscienze-CNR and Scuola Normale SuperiorePiazza S.Silvestro 121-56127 PisaItaly IMeM-CNR Institute Parco Area delle Scienze 37/A43124 ParmaItaly Department of Physics"e.Fermi" Universita di PisaLargo Pontecorvo 31-56127 PisaItaly

We investigate the tunnel coupling between the outer p-type GaAsSb shell and the n-type InAs core in catalyst-free InAs/lnP/GaAsSb core-dualshell *** present a device fabrication protocol based on wet-etching processes on selected areas of the nanostructures that enables multiple configurations of measurements in the same nanowire-based device(***-shell,core-core and core-shell).Low-temperature(4.2 K)transport in the shell-shell configuration in nanowires with 5 nm-thick InP barrier reveals a weak negative differential ***,when the InP barrier thickness is increased to 10 nm,this negative differential resistance is fully *** electrical resistance between the InAs core and the GaAsSb shell,measured in core-shell configuration,is significantly higher with respect to the resistance of the InAs core and of the GaAsSb *** field effect,applied via a back-gate,has an opposite impact on the electrical transport in the core and in the shell *** results show that electron and hole free carriers populate the InAs and GaAsSb regions respectively and indicate InAs/InP/GaAsSb core-dualshell nanowires as an ideal system for the investigation of the physics of interacting electrons and holes at the nanoscale.

关键词： core-dualshell nanowires charge carrier separation semiconductor nanowires nanoelectronics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：