检索结果-南通市图书馆

Seismotectonics of Southern Calabria Terrane(South Italy)

Journal of Mountain Science 2022年第11期19卷 3148-3162页

作者： Vincenzo TRIPODI anna gervasi Mario LA ROCCA Federica LUCA Francesco MUTO National Research Council of Italy(CNR)—Research Institute for Geo-Hydrological Protection(IRPI) Rende 87036Italy National Institute of Geophysics and Volcanology(INGV) National Earthquake Observatory SectionRoma 00143Italy Department of Biology Ecology and Earth Science(DiBEST)University of CalabriaRende 87036Italy

Seismic data of earthquakes recorded during the last 40 years in southern Calabria have been compared with geological data in order to obtain a seismotectonic picture of the area. We sought for any possible correlation between the main regional tectonic structures, the distribution of earthquake hypocentres and the focal mechanism of earthquakes with magnitude(Ml)≥*** of historical and recent seismicity and analysis of geological structures allowed to define the main shear strips on a regional scale. More than 2600 earthquakes with 1.5 ≤ Ml ≤ 4.5 have been considered. The focal mechanisms of earthquakes with Ml≥3 have been compared with the kinematics of known faults and used to give insight on the current active stress field. From the analysis carried out it was possible to expand the cognitive framework regarding the activity of the main tectonic structures present in the area. This study also served to identify areas of high seismicity which do not correspond to any evidence of tectonic structures on the surface, and areas where recognized tectonic structures have not shown any seismicity during the last decades. These cases could be the subject of future investigation in order to correctly assess the seismic hazard in *** task is important in the context of seismic hazard evaluation and mitigation.

关键词： Calabria Seismicity Tectonics Earthquakes

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

Scattering and absorption imaging of a highly fractured fluid-filled seismogenetic volume in a region of slow deformation

引用

Geoscience Frontiers 2020年第3期11卷 989-998页

作者： Ferdinando Napolitano Luca De Siena anna gervasi Ignazio Guerra Roberto Scarpa Mario La Rocca Dipartimento di Fisica“E.R.Caianiello” Universita Degli Studi di SalernoVia Giovanni Paolo IIFiscianoSA84084Italy Institute of Geosciences Johannes Gutenberg University MainzJ.-J.-Becher-Weg 21MainzD-55128Germany University of Aberdeen School of GeosciencesGeology and Petroleum GeologyMeston BuildingKing’s CollegeAberdeenScotlandAB243UEUK Dipartimento di Biologia Ecologia e Scienze Della TerraUniversit a Della CalabriaPonte P.BucciArcavacata di RendeCS87036Italy Istituto Nazionale di Geofisica e Vulcanologia Sezione di Rende(CS)Ponte P.BucciArcavacata di RendeCS87036Italy

Regions of slow strain often produce swarm-like sequences,characterized by the lack of a clear mainshockaftershock *** comprehension of their underlying physical mechanisms is challenging and still *** used seismic recordings from the last Pollino swarm(2010-2014) and nearby to separate and map seismic scattering(from P peak-delays) and absorption(from late-time coda-wave attenuation) at different frequencies in the Pollino range and ***-scattering and high-absorption anomalies are markers of a fluid-filled fracture volume extending from SE to NW(1.5-6 Hz) across the *** increasing frequency,these anomalies approximately cover the area where the strongest earthquakes occurred from the sixteenth century until *** our interpretation,the NW fracture propagation ends where carbonates of the Lucanian Apennines begin,as marked by a high-scattering and low-absorption *** the highest frequency(12 Hz) the anomalies widen southward in the middle of the range,consistently marking the faults active during the recent Pollino *** results suggest that fracture healing has closed small-scale fractures across the SE faults that were active in the past centuries,and that the propagation of fluids may have played a crucial role in triggering the 2010-2014 Pollino *** that the fluid propagation ended at the carbonates barrier in the NW direction,fractures opened new paths to the South,favoring the nucleation of the last Pollino ***,the recently active faults in the middle of the seismogenic volume are marked by a high-scattering and highabsorption *** work provides evidence that attenuation parameters may track shape and dynamics of fluid-filled fracture networks in fault areas.

关键词： Polling Seismic attenuation Scattering Fluids Fractures Healing

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

Incidence, risk factors, and outcome of BK polyomavirus infection after kidney transplantation

引用

World Journal of Clinical Cases 2019年第3期7卷 270-290页

作者： Evaldo Favi Carmelo Puliatti Rajesh Sivaprakasam Mariano Ferraresso Federico Ambrogi Serena Delbue Federico gervasi Ilaria Salzillo Nicholas Raison Roberto Cacciola Renal Transplantation Fondazione IRCCS Ca’Granda Ospedale Maggiore Policlinico Renal Transplantation Barts Health NHS Trust Royal London Hospital Department of Clinical Sciences and Community Health University of Milan Department of Biomedical Surgical and Dental Sciences University of Milan MRC Centre for Transplantation King’s College London

BACKGROUND Polyomavirus-associated nephropathy is a leading cause of kidney allograft failure. Therapeutic options are limited and prompt reduction of the net state of immunosuppression represents the mainstay of treatment. More recent application of aggressive screening and management protocols for BK-virus infection after renal transplantation has shown encouraging results. Nevertheless,long-term outcome for patients with BK-viremia and nephropathy remains obscure. Risk factors for BK-virus infection are also *** To investigate incidence, risk factors, and outcome of BK-virus infection after kidney *** This single-centre observational study with a median follow up of 57(31-80) mo comprises 629 consecutive adult patients who underwent kidney transplantation between 2007 and 2013. Data were prospectively recorded and annually reviewed until 2016. Recipients were periodically screened for BK-virus by plasmaquantitative polymerized chain reaction. Patients with BK viral load ≥ 1000 copies/mL were diagnosed BK-viremia and underwent histological assessment to rule out nephropathy. In case of BK-viremia, immunosuppression was minimized according to a prespecified protocol. The following outcomes were evaluated: patient survival, overall graft survival, graft failure considering death as a competing risk, 30-d-event-censored graft failure, response to treatment,rejection, renal function, urologic complications, opportunistic infections, newonset diabetes after transplantation, and malignancies. We used a multivariable model to analyse risk factors for BK-viremia and *** BK-viremia was detected in 9.5% recipients. Initial viral load was high(≥ 10000 copies/mL) in 66.7% and low(< 10000 copies/mL) in 33.3% of these ***-associated nephropathy was diagnosed in 6.5% of the study population. Patients with high initial viral load were more likely to experience sustained viremia(95% vs 25%, P < 0.00001), nephropathy(92.

关键词： Polyomavirus BK virus Kidney transplantation Outcome Risk factors Immunosuppression Human leukocyte antigen Rejection Cytomegalovirus Ethnicity

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

国际投资对中国经济发展的影响

国际投资对中国经济发展的影响

引用

作者： Raffaele gervasi 华东理工大学

学位级别：硕士

在我的硕士学位论文的选题中,我将研究的焦点聚焦在中国吸引外国直接投资和其对中国经济发展的影响方面,并重点研究了一些在中国投资的意大利公司。为了理解中国目前状况和收集中国长期内的经济现象,我首先研究了中国通过开放政策从封... 详细信息

在我的硕士学位论文的选题中,我将研究的焦点聚焦在中国吸引外国直接投资和其对中国经济发展的影响方面,并重点研究了一些在中国投资的意大利公司。为了理解中国目前状况和收集中国长期内的经济现象,我首先研究了中国通过开放政策从封闭向以市场为导向的转换时期的中国经济,通过分析主要的数据,如GDP、进出口、劳工成本、汇率等等,我更详细深入的理解了中国的经济结构。在论文中我分析了过去30多年的外国直接投资流入中国的情况,并侧重研究了外国直接投资流入的来源,如大多数投资在哪些省份,以及哪些是外国直接投资签订合同的主要部门。然后我研究了签订合同的外商直接投资的主要类型,重点关注了市场经济下这方面上的相关规章制度。在接下来的部分,我分析了一些在中国投资并开展生产和销售的意大利公司。在这个部分,我总结了他们在中国投资的目前和未来的策略,我尽可能的采访了他们其中的一些管理人员之一。最后一部分,我谈到了自己对中国经济形势的意见,并尽量收集了中国未来可能的经济现象。在整个过程中,我主要通过三个渠道收集资料：书本和杂志,网络信息,采访以及有关统计局的相关数据,然后用定性的方法进行详细阐述。最后我想感谢在我的论文写作期间,花了大量时间给我精心指导的导师杨逢珉教授。

关键词： FDI 中国资本流入意大利增长率

来源：

同方学位论文库评论