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Climate migrants’survival threatened by“C”shaped anthropic barriers

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Integrative Zoology 2020年第1期15卷 32-39页

作者： luca BUTIKOFER Weihong JI Roberto SACCHI Marco MANGIACOTTI School of Natural and Computational Sciences Massey UniversityNew Zealand Department of Earth and Environmental Science University of Pavia PaviaItaly

Despite studies on range shifts being abundant,the problem of dispersal barriers limiting climate migrants’movement is yet to be fully included into any modeling *** this reason,we introduce a novel concept whereby the interplay of range shifts and dispersal barriers of a particular spatial configuration can threaten the persistence of populations under a climate change *** named this concept“C-trap,”based on the topographic shape of such *** elaborating on the theoretical features of C-traps,we provide a simple method that combines environmental data and future climate projections to locate them *** use this method to determine where high C-trap densities have the potential to further threaten the conservation of endangered,endemic animals across the world’s terrestrial realm,in a climate change *** methodology detected potential C-traps for the study system,with areas of high density mostly located in east Europe,south Asia and North ***,finer-scale analyses are required to assess the magnitude of the threat *** barriers add an additional dimension to range shift studies and can ultimately prevent otherwise successful climate migrants from tracking their climatic *** methodology presented here is simple and flexible enough to be adapted to a wide range of taxa and locations as well as the fast development of range shift ***,we encourage researchers to include the effects of anthropogenic dispersal barriers in range shifts models and in the planning of effective conservation strategies with reference to climate change.

关键词： anthropogenic climate change land cover range shift trap

Numerical Model for the Characterization of Retro-reflective Materials Behavior in an Urban Street Canyon

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Journal of Thermal Science 2018年第5期27卷 456-462页

作者： VALLATI Andrea MAURI luca COLUCCI Chiara DE LIETO VOLLARO Roberto Department of DIAEE Sapienza University of Rome Department of Mechanical Engineering University of Roma Tre

In this work, a preliminary numerical model of the behavior of retro-reflective materials used as envelope coatings on street canyon buildings facades has been tested. Retro-reflective materials have a surface finish that allows to reflect the solar radiation back in the same direction of the incident radiation. In the last years this kind of materials has been studied as buildings envelope coating for their potentials in the reduction of the UHI effect. As a matter of fact, the angular dependence of their optical-radiative response would help to mitigate the phenomenon of radiative entrapment due to the urban fabric environment. For this reason, an urban canyon was selected as the most common urban architecture to perform the analysis. A virtual retroreflective material has been simulated considering its response as almost diffusive but in the same direction of the incident radiation. The assessment of the energy advantages of the adoption of a virtual retro-reflective material as envelope coating is investigated by means of a numerical model developed in MATLAB and based on the Gebhart factors theory. The final purpose of the numerical model is the evaluation of the surfaces solar loads by a comparison between perfectly diffusive materials and RR materials used as fa？ades coating.

关键词： retro-reflective materials numerical model Gebhart factors radiative trapping urban street canyon

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

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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

Desertification risk,economic resilience and social issues:From theory to practice

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Chinese Journal of Population,Resources and Environment 2020年第2期18卷 155-163页

作者： Gianluca Egidi luca Salvati Department of Agricultural and Forestry Sciences(DAFNE) Tuscia UniversityVia San Camillo de LellisI-01100 ViterboItaly Department of Economics and Law University of MacerataVia Armaroli 43I-62100 MacerataItaly

Land degradation and early forms of desertification in both advanced economies and emerging countries reflect complex socio-environmental processes driven by multiple interactions between biophysical and socioeconomic forces across different spatial *** present study investigates desertification risk,land degradation,and socio-demographic dynamics through the lens of“resilience,”adopting complex adaptive systems(CAS)*** resilience of socio-environmental systems exposed to land degradation is defined as the capacity of a regional economy to respond to crises and reorganize by making changes to preserve functions,structure,and feedback,and to promote future development *** reviewing the socioeconomic resilience of local socio-ecological systems exposed to land degradation,this study achieves a better comprehension of the multifaceted processes that lead to a higher risk of desertification and the intimate relationship with underlying population trends and demographic dynamics.A comprehensive approach based on resilience thinking was formulated to review both environmental and socio-demographic issues at the landscape scale,and provide a suitable foundation for sustainability science and regional development policies.

关键词： Population dynamics Ecosystem functioning Socio-ecological resilience Complex adaptive systems Interpretative framework

Toward forest ‘‘sprawl'':monitoring and planning a changing landscape for urban sustainability

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Journal of Forestry Research 2016年第1期27卷 175-184页

作者： luca Salvati Carlotta Ferrara Anastasios Mavrakis Andrea Colantoni Consiglio per la Ricerca in Agricoltura e l'analisi dell'Economia Agraria (CREA) Via della Navicella 2-400184 Rome Italy Department of Agriculture Forests Nature and Energy (DAFNE) Viale dell'Agricoltura 02015 Cittaducale (RI)Italy Department of Economic and Regional Development Institute of Urban Environment and Human ResourcesPanteion University 136 Syngrou Avenue 17671 AthensGreece Dipartimento di Science e Tecnologie per l'Agricoltura le Foreste la Natura e l'Energia Universith degli Studi di Viterbo Via S. Camillo de Lellis snc O1100 Viterbo Italy

The present study analyzes the structure and dynamics of the forest landscape in a peri-urban area （Rome, Italy） during the city＇s expansion from 1949 to 2008 using landscape metrics and change detection anal- ysis of digital maps of the area （1500 km2）. While urban settlements increased continuously from 6.5 to 27.5 % of the study area, woodlands changed less clearly, with a moderate increase （from 11.2 to 11.9 % of the total area） and a higher fragmentation as a consequence of Rome＇s expansion. The structure of forest landscape changed along the urban-to-rural gradient with patch size increasing with the distance to the inner city in 1949 and substantial landscape homogeneity in 2008. The indicators proposed in this study inform dedicated measures for conserving forest and maintaining landscape diversity. Measures adopted in Rome＇s forestation plan to counteract woodlandfragmentation were analyzed and discussed. Based on the complex landscape dynamics found for Rome, an inte- grated multiscale planning approach targeting forest con- servation is considered a key contribution to urban sustainability.

关键词： Landscape ecology Urban form Forestationplan Rome Mediterranean region

Analyses of BioVOCs variation related to vegetation predominance in the Natural Park of Ampezzo Dolomites, UNESCO world heritage area of Dolomites

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Journal of Forestry Research 2013年第3期24卷 439-448页

作者： luca Raveane Francesco Tisato Ilena Isak Pietro Traldi National Council of Researches ISTM Corso Stati Uniti n°435127 Padova Italy National Council of Researches -ICIS Corso Stati Uniti n°435127 Padova Italy

The determination of emitted Biogenic Volatile Compounds （BioVOCs） profile via Field Air Analysis （FAA） - Solid Phase Micro Extraction （75μm Carboxen/PDMS portable field sampler） was performed using GC-MS. The six sampling sites located in the Natural Park of Ampezzo Dolomites, part of the UNESCO＇s World Heritage List, are characterized by different predominating vegetation. The ubiquitous compound hexanal was chosen as internal standard, in order to compare the amounts of the different compound in the different sites. The main terpenes identified were α-pinene, 13-pinene, 6-3-carene and d-limonene, while 1,8 cineole was the highest abundant oxygenated terpene. In the site next the＇national road a higher amount of benzene derivatives （ben- zene, toluene, o-xylene, p-xylene and ethylbenzene） were observed. In the site relatively close to the road a marked decrease of benzene deriva- tives was observed. In the sites close to conifers （i.e. Fir, Pine and Larch） the terpenic content observed was higher than in the site close to the mixed forest （mainly large-leaf and some conifers）. Some terpenes were observed also in the high-quote meadow site, although of lower abun- dance than in the other sites. The highest abundance of terpenes was ob- served in the Pinus cerebra （Swiss Pine） site.

关键词： Solid phase microExtraction organic volatile compound Terpene plant emission mass spectrometry gas chromatography.

NGM282: a step forward in the nonalcoholic steatohepatitis treatment landscape?

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Hepatobiliary Surgery and Nutrition 2018年第6期7卷 484-486页

作者： luca Valenti Valerio Nobili Internal Medicine and Metabolic Diseases Fondazione IRCCS Ca’Granda Ospedale Policlinico MilanoDepartment of Pathophysiology and TransplantationUniversitàdegli Studi di MilanoMilanItaly Hepatology Gastroenterology and Nutrition UnitIRCCS“Bambino Gesù”Children’s HospitalRomeItaly Department of Pediatric University“La Sapienza”RomeItaly

Nonalcoholic fatty liver disease(NAFLD)is becoming the leading cause of liver disease worldwide,and the prevalence is still increasing,especially during the developmental age(1-3).NAFLD is defined in the presence of increased hepatic fat content not explained by at risk alcohol intake,and is epidemiologically associated with obesity,insulin resistance and metabolic disorders.

关键词： NAFLD intake hepatic

Lower Continental Crusts Involved in the Alpine Orogeny:New Insight from the Santa Lucia Nappe Metasediments(Corsica,France)

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Acta Geologica Sinica(English Edition) 2024年第4期98卷 904-920页

作者： Chiara FRASSI Maria DI ROSA luca PANDOLFI Michele MARRONI Dipartimento di Scienze della Terra Universitàdi PisaVia Santa Maria 5356126 PisaItaly Istituto di Geoscienze e Georisorse IGG-CNRVia Moruzzi50124 PisaItaly

In the Alpine Corsica(France),the Santa Lucia Nappe represents a peculiar unit preserving the unique relicts of Paleozoic lower to medium continental *** consists of composite basement affected by Permian granulite facies metamorphic conditions unconformably covered by a Late Cretaceous clastic sequence(Tomboni Conglomerate and Tralonca Flysch)affected by polyphase deformation and *** this work,we present a new reconstruction of the deformation events registered by the Tralonca Flysch during the Alpine *** D1 phase was testified by rare isoclinal *** D2 phase produced a continuous foliation and a map-scale sheath-fold with a top-to-W sense of *** D3 phase produced E-verging non-cylindrical folds and S3 crenulation cleavage that is not associated to metamorphic *** present the first temperature-pressure-deformation(P-T-d)path for the Tralonca Flysch,demonstrating that the Santa Lucia Nappe underwent accretion and then first stage exhumation in the Alpine wedge during the D1 phase with pressure and temperature peaks both occurred under blueschist metamorphic *** D2 phase occurred at lower pressure-temperature conditions during a second stage *** pressure-temperaturedeformation path is comparable with those of the Lower Units(i.e.,the subducted continental units of Alpine Corsica)suggesting a common geodynamic history.

关键词： blueschist-facies metamorphism P-T-d path Santa Lucia Nappe Corsica Alpine orogeny

Building mass to prevent non-alcoholic fatty liver disease?

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Hepatobiliary Surgery and Nutrition 2019年第2期8卷 173-176页

作者： Serena Pelusi luca Valenti Department of Pathophysiology and Transplantation Università degli Studi di MilanoMilan Italy Translational Medicine Department of Transfusion Medicine and HematologyFondazione IRCCS Ca’Granda Ospedale Maggiore Policlinico MilanoMilanItaly

While increased adiposity,generally estimated by high body mass index(BMI)is the major risk factor for non-alcoholic fatty liver disease(NAFLD),several studies have now reported an association between low skeletal muscle mass and this condition(1,2).In particular,sarcopenia has been associated with NAFLD in the general population,and with disease severity in patients who underwent liver biopsy(3-5).

关键词： NAFLD liver skeletal