1,049 research outputs found

    Seismic amplification effects induced by ancient shallow cavities underneath the urban area of the historical city center of Chieti, Italy

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    Anthropogenic cavities excavated just beneath the walkable floor (about 1–6 m depth) are present in many ancient urban centres, particularly in Europe and along the Mediterranean basin. The oldest caves are Roman constructions and have been used for different purposes over time (i.e., water storage, secret pathways, shelters against sieges, and wars). For this reason, Seismic Microzonation (SM) studies performed in urban areas must consider the presence of these holes in the subsoil, with their effects predicted through numerical simulations of local seismic response on the surface. In this study, we investigate the seismic effects of ancient anthropogenic cavities in Chieti city centre (Italy) through the cavity amplification factor (CAF). A parametric study was carried out on several different dynamic subsoil models. We define CAF as the ratio between the Acceleration Spectral Intensities on the surface and at the bedrock calculated in the period range of 0.1–0.5 s. The 2-dimensional parametric simulations were performed adopting the soil equivalent linear constitutive law by varying: (1) shear wave velocity values of subsoil, (2) cavity dimensions, (3) cavity depths, (4) cavity lining shear wave velocity values. The CAF plots were calculated on the surface for cavity sizes (width x height) varying from 4 × 5 m to 7 × 9 m. Our study demonstrates that CAF values are relevant only in the period range of 0.1–0.5 s. In particular, results show that: (1) CAF values vary from 1% to 15%; (2) the maximum CAF is felt away from the cavity axis at a distance equal to about 1.5 times the cavity width (L); (3) the maximum difference in CAF values at the surface is equal to 40% within a horizontal distance from the cavity axis ranging from 6 to 14 m. Finally, the case study of the city centre of Chieti (Abruzzo Region) is considered to show how to draw CAF maps for microzonation purposes

    First observations of oophagy in a wild population of the sand boa (Eryx jaculus)

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    The sand boa Eryx jaculus (Linnaeus, 1758) is found in the southern Balkans, Middle East and North Africa (Sindaco et al., 2013). Only recently The presence of this species has been confirmed in Italy, in a small area of southern Sicily (Insacco et al., 2015). Knowledge of the sand boa in Sicily is limited with few data on geographical distribution, morphology, and habitat (Insacco et al., 2015; Faraone et al., 2017). Even at a global scale the biology of this species is little known due to its secretive habits (Tokar & Obst, 1993)

    Freedom of Self-Determination in Planning: The Case of Travellers & Gypsies of England

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    The main question of the thesis was to understand the extent to which the English planning system facilitated freedom of self-determination. The inquiry focused on the Irish Traveller and English Gypsy (T&G) groups because of their current state of freedoms in planning compared with larger society. The thesis measures capacity for self-determination through the extent that critical characteristics related to lifestyle choices are allowed equally across all groups and explored at various scales ranging from the intimate to the European. The T&G have been focused on in literature and practical reflection from a range of disciplines bringing forward key aspects of their marginalization and perspectives on barriers and effects of their limited freedoms. This research utilizes a cross disciplinary approach including: ethnographic, legal, economic, neurological, planning and urban design to generate a complex picture of the tensions and pressures within and outside these communities. This perspective established a starting point for addressing equality in planning. Initial pilot studies served to tie together background studies and inform a methodology for research and analysis. These generated an approach to case studies field research in situations that ranged from evictions to long term residents without tenure to relocation due to the London Olympic Games. The research delivered a new understanding on the contemporary condition of T&G in England and their continued capacity to adapt to changing contexts in order to maintain the crucial qualities to being a Traveller and Gypsy. That is, their capacity to make culturally relevant decisions critical to perpetuating membership within their respective communities defines them in their various cultural contexts. This methodology is transferrable to the study of other minority groups in their particular situation of loss of freedoms. The approach is also informed by practical reflection to balance literature and field work across applicable fields through the research stages. Finally the research outcomes contributed to developing an operational methodology that was used to derive a local product of engagement. In this third stage of field work testing the operational methodology proved beneficial to overcoming land use conflict and facilitating access to these freedoms

    Petrology and regional implications of Early Cretaceous Alkaline Lamprophyres in the Ligure-Maremmano Group (Southern Tuscany, Italy): an outline.

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    Major geological and petrological features of igneous rocks within the Late Jurassic-Early Cretaceous Ligure-Maremmano Group (Southern Tuscany) are examined and related to an extensional geodynamic environment. Mineral assemblage, texture, characteristics of occurrence and whole-rock chemistry suggest that the rocks belong to the lamprophyre clan and point to an alkaline lamprophyric affinity. These rocks have been interpreted as a product of within-plate magmatism, possibly related to extension during a late stage of the Ligurian ocean development. An age of about 110 Ma (Albian) has been found. This age represents a lower limit for the beginning of the compressional Alpine deformations in this area

    Genomewide linkage scan of schizophrenia in a large multicenter pedigree sample using single nucleotide polymorphisms

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    A genomewide linkage scan was carried out in eight clinical samples of informative schizophrenia families. After all quality control checks, the analysis of 707 European-ancestry families included 1615 affected and 1602 unaffected genotyped individuals, and the analysis of all 807 families included 1900 affected and 1839 unaffected individuals. Multipoint linkage analysis with correction for marker-marker linkage disequilibrium was carried out with 5861 single nucleotide polymorphisms (SNPs; Illumina version 4.0 linkage map). Suggestive evidence for linkage ( European families) was observed on chromosomes 8p21, 8q24.1, 9q34 and 12q24.1 in nonparametric and/or parametric analyses. In a logistic regression allele-sharing analysis of linkage allowing for intersite heterogeneity, genomewide significant evidence for linkage was observed on chromosome 10p12. Significant heterogeneity was also observed on chromosome 22q11.1. Evidence for linkage across family sets and analyses was most consistent on chromosome 8p21, with a one-LOD support interval that does not include the candidate gene NRG1, suggesting that one or more other susceptibility loci might exist in the region. In this era of genomewide association and deep resequencing studies, consensus linkage regions deserve continued attention, given that linkage signals can be produced by many types of genomic variation, including any combination of multiple common or rare SNPs or copy number variants in a region. Molecular Psychiatry (2009) 14, 786-795; doi:10.1038/mp.2009.11; published online 17 February 2009</p

    Guida pratica per la lotta alla Varroa jacobsoni Oudemans

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    A cura della Regione Campania - Reg. CEE 122/97- Azione A/
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