检索结果-南通市图书馆

Belt-Parallel Shortening in the Northern Apennines and Seismotectonic Implications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Geosciences 2015年第8期6卷 938-961页

作者： Marcello Viti Enzo Mantovani Daniele Babbucci Caterina Tamburelli Nicola Cenni massimo baglione Vittorio D’Intinosante Dipartimento di Scienze Fisiche della Terra e dell’Ambiente Università degli Studi di Siena Siena Italy Dipartimento di Fisica ed Astronomia Università degli Studi di Bologna Bologna Italy Settore Sismica Regione Toscana Firenze Italy

Major seismic activity in the Northern Apennines concentrates in few zones, distributed in a peculiar way. It is argued that such context may be plausibly explained as an effect of belt-parallel?shortening, which has caused oroclinal bending of the longitudinal ridges formed during the Late Miocene to Lower Pliocene evolutionary phase. The main effects of this process, developed since the upper Pliocene, have mainly affected the outer sectors of the belt. The major seismic sources have generated in the zones where different oroclinal bendings of adjacent ridges have produced extensional/transtensional deformation. In the inner side of the Northern Apennines, belt parallel shortening has occurred at a lower rate. The main effects have resulted from the shortening of the?Albano-Chianti-Rapolano-Cetona ridge. In particular, the proposed tectonic setting may account?for the moderate seismic activity that occurs in the Firenze, Elsa, Pesa, Siena and Radicofani basins.

关键词： Northern Apennines Seismotectonics Oroclinal Bending

Generation of Back-Arc Basins as Side Effect of Shortening Processes: Examples from the Central Mediterranean

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Geosciences 2014年第10期5卷 1062-1079页

作者： Enzo Mantovani Marcello Viti Daniele Babbucci Caterina Tamburelli Nicola Cenni massimo baglione Vittorio D’Intinosante Dipartimento di Scienze Fisiche della Terra e dell’Ambiente Università degli Studi di Siena Siena Italy Dipartimento di Scienze Biologiche Geologiche e Ambientali Università degli Studi di Bologna Bologna Italy Ufficio Prevenzione Sismica Regione Toscana Firenze Italy

The evolution of the Mediterranean area since the Oligocene-Lower Miocene has been driven by the convergence of the surrounding plates. This implies that the observed deformation pattern in that region must be the most convenient shortening pattern, i.e. the one controlled by the minimum action principle. To understand why the fulfilment of such condition has required a complex spatio-temporal distribution of major tectonic events, such as uplift, lateral displacement and bending of orogenic belts, consumption of large lithospheric domains and formation of back arc basins, it may be very useful to take into account a basic tectonic concept, which helps to identify the process that can minimize the resistance of tectonic forces. Such concept starts from the fact that the most convenient consumption process is the one that involves low buoyancy oceanic lithosphere (Tethyan domains). However, such process is highly favoured where the oceanic lithosphere is stressed by vertical forces, a situation that develops when orogenic wedges are forced to over thrust and load the oceanic domain to be consumed. This interpretation can provide plausible and coherent explanations for the complex pattern of the observed deformations. In this view, the generation of back arc basins is taken as a side effect of an extrusion process, as suggested by numerical and mechanical experiments.

关键词： Central Mediterranean Extrusion Tectonics Back-Arc Basins

Present Tectonic Setting and Spatio-Temporal Distribution of Seismicity in the Apennine Belt

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Geosciences 2015年第4期6卷 429-454页

In previous papers, we have argued that a close connection may exist between the discontinuous northward displacement of the Adria plate and the spatio-temporal distribution of major earthquakes in the?periAdriatic?regions?[1]-[3]. In particular, five seismic sequences are tentatively recognized in the post 1400 A.D. seismic history, each characterized by a progressive migration of major shocks along the eastern (Hellenides, Dinarides), western (Apennines) and northern (Eastern Southern Alps) boundaries of Adria. In this work, we describe an attempt at gaining insights into the short-term evolution of the strain field that underlies the migration of seismicity in the Apennine belt. The results of this study suggest that seismicity in the study area is mainly conditioned by the fact that the outer (Adriatic) sector of the Apennine belt, driven by the Adria plate, is moving faster than the inner (Tyrrhenian) belt. This kinematics is consistent with the observed Pleistocene deformation pattern and the velocity field inferred by GPS data. The spatio-temporal distribution of major shocks during the last still ongoing seismic sequence (post 1930) suggests that at present the probability of next major shocks is highest in the Northern Apennines. Within this area, we suggest that seismic hazard is higher in the zones located around the outer sector of the Romagna-Marche-Umbria units (RMU), since that wedge is undergoing an accelerated relative motion with respect to the inner Apennine belt. This hypothesis may also account for the pattern of background seismicity in the Northern Apennines. This last activity might indicate that the Upper Tiber Valley fault system is the most resisted boundary sector of the RMU mobile wedge, implying an higher probability of major earthquakes.

关键词： Seismotectonics Seismic Hazard GPS Apennines Mediterranean

Phase diagram of muonium hydride:the significant effect of dimensionality

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2024年第2期76卷 182-187页

作者： Jieru Hu massimo Boninsegni Department of Physics University of Alberta State Key Laboratory of Precision Spectroscopy East China Normal University

We carry out a theoretical investigation of the low-temperature phase diagram of muonium hydride in two dimensions,using numerical simulations.It is shown that the phase diagram of this substance is qualitatively different in two and three dimensions.Specifically,while in three dimensions it is essentially identical to that of parahydrogen,i.e.,only displaying a single(crystalline)phase.In two dimensions it is very similar to that of^(4)He,with an equilibrium liquid phase that turns superfluid at a temperature as high as~2.2 K,and crystallizes under applied pressure.This is a well-described case of a continuous-space condensed matter system whose ground state equilibrium phase is qualitatively altered by dimensional reduction.

关键词： quantum fuids and solids quantum Monte Carlo phase diagrams

Portal hypertension in patients with nonalcoholic fatty liver disease:Current knowledge and challenges

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

World Journal of Gastroenterology 2024年第4期30卷 290-307页

作者： Anita Madir Ivica Grgurevic Emmanuel A Tsochatzis massimo Pinzani Department of Gastroenterology Hepatology and Clinical NutritionUniversity Hospital DubravaZagreb 10000Croatia School of Medicine University of ZagrebZagreb 10000Croatia Faculty of Pharmacy and Biochemistry University of ZagrebZagreb 10000Croatia UCL Institute for Liver and Digestive Health Royal Free Hospital and University College LondonLondon NW32PFUnited Kingdom

Portal hypertension(PH)has traditionally been observed as a consequence of significant fibrosis and cirrhosis in advanced non-alcoholic fatty liver disease(NAFLD).However,recent studies have provided evidence that PH may develop in earlier stages of NAFLD,suggesting that there are additional pathogenetic mechanisms at work in addition to liver fibrosis.The early development of PH in NAFLD is associated with hepatocellular lipid accumulation and ballooning,leading to the compression of liver sinusoids.External compression and intraluminal obstacles cause mechanical forces such as strain,shear stress and elevated hydrostatic pressure that in turn activate mechanotransduction pathways,resulting in endothelial dysfunction and the development of fibrosis.The spatial distribution of histological and functional changes in the periportal and perisinusoidal areas of the liver lobule are considered responsible for the pre-sinusoidal component of PH in patients with NAFLD.Thus,current diagnostic methods such as hepatic venous pressure gradient(HVPG)measurement tend to underestimate portal pressure(PP)in NAFLD patients,who might decompensate below the HVPG threshold of 10 mmHg,which is traditionally considered the most relevant indicator of clinically significant portal hypertension(CSPH).This creates further challenges in finding a reliable diagnostic method to stratify the prognostic risk in this population of patients.In theory,the measurement of the portal pressure gradient guided by endoscopic ultrasound might overcome the limitations of HVPG measurement by avoiding the influence of the pre-sinusoidal component,but more investigations are needed to test its clinical utility for this indication.Liver and spleen stiffness measurement in combination with platelet count is currently the best-validated non-invasive approach for diagnosing CSPH and varices needing treatment.Lifestyle change remains the cornerstone of the treatment of PH in NAFLD,together with correcting the components of metabolic syndrome,using nonselective

关键词： Non-alcoholic fatty liver disease Portal hypertension Mechanotransduction Endothelial dysfunction Hepatic venous pressure gradient

In vivo polydopamine coating of Rhodobacter sphaeroides for enhanced electron transfer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第2期17卷 875-881页

作者： Rossella Labarile Danilo Vona Maria Varsalona Matteo Grattieri Melania Reggente Roberto Comparelli Gianluca M.Farinola Fabian Fischer Ardemis A.Boghossian massimo Trotta Istituto per i Processi Chimico Fisici Consiglio Nazionale delle RicercheBari 70126Italy Dipartimento di Chimica Universitàdegli Studi di BariBari 70126Italy Institute of Chemical Sciences and Engineering(ISIC) Ecole Polytechnique Fédérale de Lausanne(EPFL)Lausanne 1015Switzerland Institute of Life Technologies HES-SO Valais-Wallis1950 SionSwitzerland Institute for Renewable Energy HES-SO Valais-Wallis1950 SionSwitzerland

Recent advances in coupling light-harvesting microorganisms with electronic components have led to a new generation of biohybrid devices based on microbial photocatalysts.These devices are limited by the poorly conductive interface between phototrophs and synthetic materials that inhibit charge transfer.This study focuses on overcoming this bottleneck through the metabolically-driven encapsulation of photosynthetic cells with a bio-inspired conductive polymer.Cells of the purple non sulfur bacterium Rhodobacter sphaeroides were coated with a polydopamine(PDA)nanoparticle layer via the self-polymerization of dopamine under anaerobic conditions.The treated cells show preserved light absorption of the photosynthetic pigments in the presence of dopamine concentrations ranging between 0.05–3.5 mM.The thickness and nanoparticle formation of the membrane-associated PDA matrix were further shown to vary with the dopamine concentrations in this range.Compared to uncoated cells,the encapsulated cells show up to a 20-fold enhancement in transient photocurrent measurements under mediatorless conditions.The biologically synthesized PDA can thus act as a matrix for electronically coupling the light-harvesting metabolisms of cells with conductive surfaces.

关键词： bioelectronics photosynthetic bacteria purple bacteria electron transfer polydopamine biophotovoltaics

Polydopamine-coated photoautotrophic bacteria for improving extracellular electron transfer in living photovoltaics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2024年第2期17卷 866-874页

作者： Melania Reggente Charlotte Roullier Mohammed Mouhib Patricia Brandl Hanxuan Wang Stefano Tacconi Francesco Mura Luciana Dini Rossella Labarile massimo Trotta Fabian Fischer Ardemis A.Boghossian Institute of Chemical Sciences and Engineering(ISIC) Ecole Polytechnique Fédérale de Lausanne(EPFL)Lausanne 1015Switzerland Department of Biology and Biotechnology Charles Darwin Sapienza University of RomeRome 00185Italy Research Center on Nanotechnology Applied for Engineering of Sapienza(CNIS) University of Rome SapienzaRome 00185Italy CNR-IPCF Consiglio Nazionale delle Ricerche–Istituto per i Processi Chimico Fisici Bari 70126Italy Institute of Life Technologies HES-SO Valais-WallisSion 1950Switzerland Institute for Renewable Energy HES-SO Valais-WallisSion 1950Switzerland

Living photovoltaics are microbial electrochemical devices that use whole cell–electrode interactions to convert solar energy to electricity.The bottleneck in these technologies is the limited electron transfer between the microbe and the electrode surface.This study focuses on enhancing this transfer by engineering a polydopamine(PDA)coating on the outer membrane of the photosynthetic microbe Synechocystis sp.PCC6803.This coating provides a conductive nanoparticle shell to increase electrode adhesion and improve microbial charge extraction.A combination of scanning electron microscopy(SEM),transmission electron microscopy(TEM),UV–Vis absorption,and Raman spectroscopy measurements were used to characterize the nanoparticle shell under various synthesis conditions.The cell viability and activity were further assessed through oxygen evolution,growth curve,and confocal fluorescence microscopy measurements.The results show sustained cell growth and detectable PDA surface coverage under slightly alkaline conditions(pH 7.5)and at low initial dopamine(DA)concentrations(1 mM).The exoelectrogenicity of the cells prepared under these conditions was also characterized through cyclic voltammetry(CV)and chronoamperometry(CA).The measurements show a three-fold enhancement in the photocurrent at an applied bias of 0.3 V(vs.Ag/AgCl[3 M KCl])compared to non-coated cells.This study thus lays the framework for engineering the next generation of living photovoltaics with improved performances using biosynthetic electrodes.

关键词： biophotovoltaics bioelectronics photosynthetic bacteria cyanobacteria polydopamine adherence

Analysis of the COVID-19, Outbreak in Brazil Using Topological Weighted Centroid: An Intelligent Geographic Information System Approach

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Data Analysis and Information Processing 2024年第2期12卷 248-266页

作者： Masoud Asadi-Zeydabadi Marina Mizukoshi massimo Buscema Giulia Massini Weldon Lodwick Department of Physics University of Colorado Denver Colorado USA Institute of Mathematics and Statistics Federal University of Goi&#225s Goiania Goi&#225s Brazil Semeion Research Center Rome Italy Department of Mathematical and Statistical Sciences University of Colorado Denver Colorado USA

This study used Topological Weighted Centroid (TWC) to analyze the Coronavirus outbreak in Brazil. This analysis only uses latitude and longitude in formation of the capitals with the confirmed cases on May 24, 2020 to illustrate the usefulness of TWC though any date could have been used. There are three types of TWC analyses, each type having five associated algorithms that produce fifteen maps, TWC-Original, TWC-Frequency and TWC-Windowing. We focus on TWC-Original to illustrate our approach. The TWC method without using the transportation information predicts the network for COVID-19 outbreak that matches very well with the main radial transportation routes network in Brazil.

关键词： COVID-19 Topological Weighted Centroid (TWC) Algorithms TWC-Original TWC-Frequency and TWC-Windowing

Epidemiology and risk factors for mortality in critically ill patients with pancreatic infection

维普期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Intensive Medicine 2024年第1期4卷 81-93页

作者： Marie Dejonckheere massimo Antonelli Kostoula Arvaniti Koen Blot Ben CreaghBrown Dylan Wde Lange Jan De Waele Mieke Deschepper Yalim Dikmen George Dimopoulos Christian Eckmann Guy Francois massimo Girardis Despoina Koulenti Sonia Labeau Jeffrey Lipman Fernando Lipovestky Emilio Maseda Philippe Montravers Adam Mikstacki JoseArtur Paiva Cecilia Pereyra Jordi Rello JeanFrancois Timsit Dirk Vogelaers Stijn Blot the Abdominal Sepsis Study(AbSeS)group on behalf of the Trials Group of the European Society of Intensive Care Medicine Department of Internal Medicine and Pediatrics Faculty of Medicine and Health SciencesGhent UniversityGhentBelgium Department of Anesthesiology Intensive Care and Emergency MedicineFondazione Policlinico Universitario A.Gemelli IRCCSRomeItaly UniversitàCattolica del Sacro Cuore RomeItaly Intensive Care Unit Papageorgiou University Affiliated HospitalThessaloníkiGreece Department of Epidemiology and Public Health SciensanoIxellesBelgium Surrey Perioperative Anaesthetic Critical Care Collaborative Research Group(SPACeR) Royal Surrey County HospitalGuildfordUK Department of Clinical and Experimental Medicine University of SurreyGuildfordUK Department of Intensive Care Medicine University Medical Center UtrechtUniversity UtrechtUtrechtthe Netherlands Department of Intensive Care Medicine Ghent University HospitalGhentBelgium Data Science Institute Ghent University HospitalGhentBelgium Department of Anesthesiology and Reanimation Cerrahpasa School of MedicineIstanbul University-CerrahpasaIstanbulTurkey rd Department of Critical Care “EVGENIDIO”HospitalNational and Kapodistrian University of AthensAthensGreece Department of General Visceral and Thoracic SurgeryKlinikum Hannoversch-MuendenGoettingen UniversityGöttingenGermany Division of Scientific Affairs-Research European Society of Intensive Care MedicineBrusselsBelgium Anesthesia and Intensive Care Department University Hospital of ModenaModenaItaly UQ Centre for Clinical Research Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia nd Critical Care Department Attikon University HospitalAthensGreece Department of Nursing Faculty of EducationHealth and Social WorkUniversity College GhentGhentBelgium Jamieson Trauma Institute The University of QueenslandBrisbaneQLDAustralia Nimes University Hospital University of MontpellierNimesFrance Critical Care Department Hospital of the Interamerican Open University(UAI)Buenos AiresArgentina Surgical Critical Care Department of AnesthesiaHospital Universitario

Background:The AbSeS-classification defines specific phenotypes of patients with intra-abdominal infection based on the(1)setting of infection onset(community-acquired,early onset,or late-onset hospital-acquired),(2)presence or absence of either localized or diffuse peritonitis,and(3)severity of disease expression(infection,sepsis,or septic shock).This classification system demonstrated reliable risk stratification in intensive care unit(ICU)patients with intra-abdominal infection.This study aimed to describe the epidemiology of ICU patients with pancreatic infection and assess the relationship between the components of the AbSeS-classification and mortality.Methods:This was a secondary analysis of an international observational study(“AbSeS”)investigating ICU patients with intra-abdominal infection.Only patients with pancreatic infection were included in this analysis(n=165).Mortality was defined as ICU mortality within 28 days of observation for patients discharged earlier from the ICU.Relationships with mortality were assessed using logistic regression analysis and reported as odds ratio(OR)and 95%confidence interval(CI).Results:The overall mortality was 35.2%(n=58).The independent risk factors for mortality included older age(OR=1.03,95%CI:1.0 to 1.1 P=0.023),localized peritonitis(OR=4.4,95%CI:1.4 to 13.9 P=0.011),and persistent signs of inflammation at day 7(OR=9.5,95%CI:3.8 to 23.9,P<0.001)or after the implementation of additional source control interventions within the first week(OR=4.0,95%CI:1.3 to 12.2,P=0.013).Gramnegative bacteria were most frequently isolated(n=58,49.2%)without clinically relevant differences in microbial etiology between survivors and non-survivors.Conclusions:In pancreatic infection,a challenging source/damage control and ongoing pancreatic inflammation appear to be the strongest contributors to an unfavorable short-term outcome.In this limited series,essentials of the AbSeS-classification,such as the setting of infection onset,diffuse peritonitis,and severity of disease expression,

关键词： Pancreatic infection Intensive care unit Mortality Intra-abdominal infection Sepsis