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Geoscience Frontiers 2015年第1期6卷 39-48页

作者： S.Monna A.Argnani G.B.Cimini F.Frugoni C.Montuori Istituto nazionale di Ceofisica e Vulcanologia Istituto di Scienze Marine-consiglio nazionale delle ricerche

Geophysical studies point to a complex tectonic and geodynamic evolution of the Alboran Basin and Gulf of Cadiz. Tomograpbic images show strong seismic waves velocity contrasts in the upper mantle. The high velocity anomaly beneath the Alboran Sea recovered by a number of studies is now a well estab- lished feature. Several geodynamic reconstructions have been proposed also on the base of these images. We present and elaborate on restllts coming from a recent tomography study which concentrates on both the Alboran and the adjacent Atlantic region. These new results, while they confirm the existence of the fast anomaly below the Alboran region, also show interesting features of the lithosphere-asthenosphere system below the Atlantic. A high velocity body is imaged roughly below the Horseshoe Abyssal plain down to sub-lithospheric depths. This feature suggests either a possible initiation or relic subduction. Pronounced low velocity anomalies pervade the upper mantle below the Atlantic region and separate the lithospheres of the two regions. We also notice a strong change of the upper mantle velocity structure going from south to north across the Gorringe Bank. This variation in structure could be related to the different evolution in the opening of the central and northern Atlantic oceans.

关键词： Affica-lberia plate margin Teleseismic tomography Velocity anomaly Mantle upwelling Lithospheric subduction

Protein Domains Involved in Assembly in the Endoplasmic Reticulum Promote Vacuolar Delivery when Fused to Secretory GFP, Indicating a Protein Quality Control Pathway for Degradation in the Plant Vacuole

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Molecular Plant 2008年第6期1卷 1067-1076页

作者： Ombretta Foresti Francesca De Marchis Maddalena de Virgilio Eva M. Klein Sergio Arcioni Michele Bellucci Alessandro Vitale Istituto di Biologia e Biotecnologia Agraria Consiglio Nazionale delle Ricerche via Bassini 15 20133 Milano Italy EU Istituto di Genetica Vegetale Consiglio Nazionale delle Ricerche via della Madonna Alta 130 06128 Perugia Italy EU

The correct folding and assembly of newly synthesized secretory proteins are monitored by the protein quality control system of the endoplasmic reticulum （ER）. Through interactions with chaperones such as the binding protein （BiP） and other folding helpers, quality control favors productive folding and sorts for degradation defective proteins. A major route for quality control degradation identified in yeast, plants, and animals is constituted by retrotranslocation from the ER to the cytosol and subsequent disposal by the ubiquitin/proteasome system, but alternative routes involving the vacuole have been identified in yeast. In this study, we have studied the destiny of sGFP418, a fusion between a secretory form of GFP and a domain of the vacuolar protein phaseolin that is involved in the correct assembly of phaseolin and in BiP recognition of unassembled subunits. We show that sGFP418, despite lacking the phaseolin vacuolar sorting signal, is delivered to the vacuole and fragmented, in a process that is inhibited by the secretory traffic inhibitor brefeldin A. Moreover, a fusion between GFP and a domain of the maize storage protein γ-zein involved in zein polymerization also undergoes post-translational fragmentation similar to that of sGFP418. These results show that defective secretory proteins with permanently exposed sequences normally involved in oligomerization can be delivered to the vacuole by secretory traffic. This strongly suggests the existence of a plant vacuolar sorting mechanism devoted to the disposal of defective secretory proteins.

关键词： Endoplasmic reticulum protein degradation protein traffic vacuole.

The W3C Data Catalog Vocabulary,Version 2:Rationale,Design Principles,and Uptake

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Data Intelligence 2024年第2期6卷 457-487页

作者： Riccardo Albertoni David Browning Simon Cox Alejandra N.Gonzalez-Beltran Andrea Perego Peter Winstanley Istituto di Matematica Applicata e Tecnologie Informatiche"Enrico Magenes" Consiglio Nazionale delle Ricerche(IMATI-CNR)GenoaItaly Independent Consultant United Kingdom LandandWater CSiROMelbourneAustralia Scientific Computing Rutherford Appleton LaboratoryScience and Technology Facilities CouncilHarwell Cam-pusOx110QXUnited Kingdom European Parliament Luxembourg Semantic Arts Fort CollinsCO80524USA

DCAT is an RDF vocabulary designed to facilitate interoperability between data catalogs published on the *** its first release in 2014 as a W3C Recommendation,DCAT has seen a wide adoption across communities and domains,particularly in conjunction with implementing the FAIR data principles(forfindable,accessible,interoperable and reusable data).These implementation experiences,besides demonstrating the fitness of DCAT to meet its intended purpose,helped identify existing issues and ***,over the last few years,additional requirements emerged in data catalogs,given the increasing practice of documenting not only datasets but also data services and *** paper illustrates the new version of DCAT,explaining the rationale behind its main revisions and extensions,based on the collected use cases and requirements,and outlines the issues yet to be addressed in future versions of DCAT.

关键词： Data Catalogs Interoperability Discoverability FAIR data

Parallel Molecular Dynamics with Irregular Domain Decomposition

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Communications in Computational Physics 2011年第9期10卷 1071-1088页

作者： Mauro Bisson Massimo Bernaschi Simone Melchionna Department of Computer Science University of Rome"Sapienza"Italy Istituto Applicazioni Calcolo Consiglio Nazionale delle RicercheRomeItaly Institute of Material Sciences and Engineering ´Ecole Polytechnique F´ed´erale de LausanneSwitzerland CNR-ipcf Istituto Processi Chimico-FisiciConsiglio Nazionale delle RicercheRomeItaly

The spatial domain of Molecular Dynamics simulations is usually a regular box that can be easily divided in subdomains for parallel *** efforts aimed at simulating complex biological systems,like the blood flow inside arteries,require the execution of Parallel Molecular Dynamics(PMD)in vessels that have,by nature,an irregular *** those cases,the geometry of the domain becomes an additional input parameter that directly influences the outcome of the *** this paper we discuss the problems due to the parallelization of MD in complex geometries and show an efficient and general method to perform MD in irregular domains.

关键词： Molecular dynamics irregular domain decomposition parallel algorithms hemodynamics

1991-2020 climate normal in the European Alps:focus on high-elevation environments

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Journal of Mountain Science 2023年第8期20卷 2149-2163页

作者： NIGRELLI Guido CHIARLE Marta Istituto di Ricerca per la Protezione Idrogeologica Consiglio Nazionale delle RicercheTorino 10135Italy

Alps are an important geographical area of the European continent and,in this area,temperature increase is most ***,the 1991-2020 climate normal in the Alps has still not been thoroughly *** to fill this gap with a focus on high-elevation environments,minimum and maximum daily air temperature acquired by 23 automatic weather station were *** results show that the mean annual values of minimum and maximum temperature for the 1991-2020 climate normal in the Alps are-2.4℃ and 4.4℃,respectively,with a warming rate of 0.5℃/10 *** mean annual temperature comparison between 1961-1990 and 1971-2000,1961-1990 and 1981-2010,1961-1990 and 1991-2020 climate normal show an increase of 0.3℃,0.5℃ and 0.9℃,*** results also confirm that seasonal and annual temperatures are rising through the whole Alpine arc,mainly in summer and *** work highlights that annual minimum and maximum temperature do not seem to be affected by a positive elevation-dependent ***,a positive elevation-dependent warming in the maximum values of the annual minimum temperature was *** anthropogenic emissions maintain the trend of the last decades,the expected mean annual temperature of the 2001-2030 climate normal is-0.2℃,with an increase of 0.5℃ if compared to the 1991-2020 climate normal and with an increase of 1.5℃ if compared to the 1961-1990 climate *** study highlights the warming rate that is now present in the European Alps,provides indications on the warming rate that will occur in the coming years and highlights the importance of carrying out investigations that consider not only the last 30-year climate normal,but also the most recent 30-year climate normal by comparing them with each other.

关键词： Air temperature trend Climate normal Climate change High mountain climate Alps

Optical absorption of (Ag-Au)133(SCH3)52 bimetallic monolayer-protected clusters

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Progress in Natural Science:Materials International 2016年第5期26卷 467-476页

作者： Alessandro Fortunelli Mauro Stener CNR-ICCOM Consiglio Nazionale delle Ricerche Dipartimento di Scienze Chimiche e Farmaceutiche Università di Trieste

The evolution of the optical absorption spectrum of bimetallic Ag-Au monolayer-protected clusters(MPC)obtained by progressively doping Ag into the experimentally known structure of Au133(SR)52was predicted via rigorous time-dependent density-functional theory(TDDFT) calculations. In addition to monometallic Au133(SR)52and Ag133(SR)52species, 5 different(Ag-Au)133(SCH3)52homotops were considered with varying Ag content and site positioning, and their electronic structure and optical response were analyzed in terms of Projected Density Of States(PDOS), the induced or transition electron density, and Transition Component Maps(TCM) at selected excitation energies. It was found that Ag doping led to the effects rather different from those encountered in bare metal clusters. And it was also observed that Ag doping could produce structured spectral features, especially in the 3–4 eV range but also in the optical region if Ag atoms were located in the sub-staple region, as rationalized by the accompanying electronic analysis. Additionally, Au doping into the staples of Ag-rich MPC also gave rise to a more homogeneous induced electron density. These findings show the great sensitivity of the electronic response of MPC nanoalloy systems to the exact location of the alloying sites.

关键词： Nanoalloys Gold nanomolecules Electronic excited states Homotops Transition electron density

Unfolding the structural stability of nanoalloys via symmetry-constrained genetic algorithm and neural network potential

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npj Computational Materials 2022年第1期8卷 1135-1145页

作者： Shuang Han Giovanni Barcaro Alessandro Fortunelli Steen Lysgaard Tejs Vegge Heine Anton Hansen Department of Energy Conversion and Storage Technical University of DenmarkFysikvej2800Kgs.LyngbyDenmark CNR-ICCOM&ipcf Consiglio Nazionale delle Ricerchevia G.Moruzzi 156124PisaItaly

The structural stability of nanoalloys is a challenging research subject due to the complexity of size,shape,composition,and chemical *** genetic algorithm is a popular global optimization method that can efficiently search for the ground-state nanoalloy ***,the algorithm suffers from three significant limitations:the efficiency and accuracy of the energy evaluator and the algorithm’s *** we describe the construction of a neural network potential intended for rapid and accurate energy predictions of Pt-Ni nanoalloys of various sizes,shapes,and *** further introduce a symmetry-constrained genetic algorithm that significantly improves the efficiency and viability of the algorithm for realistic size *** combination of the two allows us to explore the space of homotops and compositions of Pt-Ni nanoalloys consisting of up to 4033 atoms and quantitatively report the interplay of shape,size,and composition on the dominant chemical ordering patterns.

关键词： structure symmetry constrained

Fractal characteristics of far-field diffraction patterns for two-dimensional Thue-Morse quasicrystals

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Optoelectronics Letters 2011年第5期7卷 346-349页

作者：阳明仰周骏 L Petti S De Nicola P Mormile Institute of Photonics Faculty of Science Ningbo University Istituto di Cibernetica "E. Caianiello" del consiglio nazionale delle ricerche Via Campi Flegrei 34 Istituto nazionale di Ottica del consiglio nazionale delle ricerche Via Campi Flegrei 34 Istituto di Cibernetica"E. Caianiello"del consiglio nazionale delle ricerche Via Campi Flegrei 34

We report a numerical method to analyze the fractal characteristics of far-field diffraction patterns for two-dimensional Thue-Morse (2-D TM) structures. The far-field diffraction patterns of the 2-D TM structures can be obtained by the numerical method, and they have a good agreement with the experimental ones. The analysis shows that the fractal characteristics of far-field diffraction patterns for the 2-D TM structures are determined by the inflation rule, which have potential applications in the design of optical diffraction devices.

关键词： Diffraction patterns Fractals Interferometry Two dimensional

From unstructured texts to semantic story maps

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International Journal of Digital Earth 2023年第1期16卷 234-250页

作者： Valentina Bartalesi Gianpaolo Coro Emanuele Lenzi Pasquale Pagano NicolòPratelli Istituto di Scienza e Tecnologie dell’Informazione‘A.Faedo’del consiglio nazionale delle ricerche PisaItaly

Digital maps greatly support storytelling about territories,especially when enriched with data describing cultural,societal,and ecological aspects,conveying emotional messages that describe the territory as a *** maps are interactive online digital narratives that can describe a territory beyond its map by enriching the map with text,pictures,videos,and other multimedia *** paper presents a semi-automatic workflow to produce story maps from textual documents containing territory *** expertfirst assembles one territory-contextual document containing text and ***,automatic processes use natural language processing and Wikidata services to(i)extract key concepts(entities)and geospatial coordinates associated with the territory,(ii)assemble a logically-ordered sequence of enriched story-map events,and(iii)openly publish online story maps and an interoperable Linked Open Data semantic knowledge base for event exploration and inter-story correlation *** workflow uses an Open Science-oriented methodology to publish all processes and *** our workflow,we produced story maps for the value chains and territories of 23 rural European areas of 16 *** numerical evaluation,we demonstrated that territory experts considered the story maps effective in describing their territories,and appropriate for communicating with citizens and stakeholders.

关键词： Story maps semantic web ontology natural language processing narratives e-infrastructures virtual research environments

Litchi-derived platinum groupmetal-free electrocatalysts for oxygen reduction reaction and hydrogen evolution reaction in alkalinemedia

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SusMat 2023年第2期3卷 248-262页

作者： Seyed Ariana Mirshokraee Mohsin Muhyuddin Roberto Lorenzi Giorgio Tseberlidis Carmelo Lo Vecchio Vincenzo Baglio Enrico Berretti Alessandro Lavacchi Carlo Santoro Department of Materials Science University of Milano-BicoccaMilanoItaly Istituto di Tecnologie Avanzate per l’Energia“Nicola Giordano”(ITAE) Consiglio Nazionale delle Ricerche(CNR)Via Salita S.MessinaItaly Istituto di Chimica Dei Composti OrganoMetallici(ICCOM) Consiglio Nazionale Delle Ricerche(CNR)Sesto FiorentinoFirenzeItaly

Within the framework of the circular economy,the waste litchi’s skins were upgraded and transformed into electrocatalysts for oxygen reduction reaction(ORR)and hydrogen evolution reaction(HER).The waste litchi’s skins were pyrolyzed,activated,and then used as carbon support for fabricating metal–nitrogen–carbons(M–N–Cs)which belong to a promising class of platinum group metal-free *** activated char was functionalized with transition metal(Fe,Ni,and Co)-phthalocyanine(Pc)in monometallic and bimetallic fashion by subjecting it to a thermal treatment at 600 and 900◦*** samples functionalized at 900℃ showed higher performance for HER due to the formation of metal nanoparticles,whereas the samples functionalized at 600℃ showed higher performance for ***,sample Ni–Co 900 had an overpotential of−0.38 V for HER,while the sample Fe 600 was the most active electrocatalyst for ORR by demonstrating the onset potential of∼0.9 V(a half-wave potential of∼0.81 V)with the least production of unwanted peroxide anion.

关键词： circular economy hydrogen evolution reaction oxygen reduction reaction PGM-free electrocatalyst