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4 results on '"Bettelli, Giuseppe"'

1. Geological record of fluid flow and seismogenesis along an erosive subducting plate boundary

Author

Vannucchi, Paola, Remitti, Francesca, and Bettelli, Giuseppe

Subjects
Plate tectonics -- Research, Subduction zones (Geology) -- Research, Environmental issues, Science and technology, Zoology and wildlife conservation, Research
Abstract

Author(s): Paola Vannucchi (corresponding author) [1]; Francesca Remitti [2]; Giuseppe Bettelli [2] Tectonic erosion of the overriding plate by the downgoing slab is believed to occur at half the Earth's [...]

Published
2008
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2. Geological record of fluid flow and seismogenesis along an erosive subducting plate boundary

Author

Vannucchi, Paola, Remitti, Francesca, and Bettelli, Giuseppe

Subjects
Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Tectonic erosion of the overriding plate by the downgoing slab is believed to occur at half the Earth's subduction zones (1,2). In situ investigation of the geological processes at active [...]

Published
2008

3. Mechanisms of subduction accretion as implied from the broken formations in the Apennines, Italy

Author

Vannucchi, Paola and Bettelli, Giuseppe

Subjects
Pennine Chain -- Natural history, Subduction zones (Geology), Folds (Geology), Earth sciences
Abstract

Mesoscale structural analysis of the Ligurian broken formations of the Northern Apennines and the regional occurrence of subduction-related structures indicate polyphase folding as the mechanism responsible for progressive disruption. The evidence for direct correlation between regionally extensive noncylindrical folds and tectonic disruption has a strong bearing on determining how the Ligurian accretionary prism evolved. For example, the block-in-matrix structure of the Ligurian tectonic melanges is produced through extension developed along fold limbs in a compressive stress field, as expected from offscraping and intraprism deformation. The model implied by the mesoscale and macroscale analyses of the Ligurian tectonic melanges provides one mechanism of accretion reconciling two deformation styles, i.e., stratal disruption and folding, commonly seen in ancient accretionary prisms. Furthermore, this model could be relevant in active accretionary prisms, especially in the intraprism part, where the seismic and drilling data are sparse. Keywords: Northern Apennines, broken formations, folding, accretion.

Published
2002

4. The Long-term Prognostic Significance of Repeated Blood Pressure Measurements in the Elderly

Author

Alli, Claudio, Avanzini, Fausto, Bettelli, Giuseppe, Colombo, Fabio, Torri, Valter, and Tognoni, Gianni

Subjects
Blood pressure -- Measurement, Aged -- Care and treatment, Health
Abstract

Background: In young and middle-aged people, both systolic (SBP) and diastolic (DBP) blood pressure have a continuous, strong, and independent relationship with subsequent cardiovascular morbidity and mortality. These relationships are not well documented in older people and, until now, studies in the elderly do not provide homogeneous results on the importance of DBP compared with SBP as a cardiovascular risk factor. Objective: To determine whether SBP and DBP are independent indicators of mortality risk in the elderly. Design: An observational prospective cohort study to analyze the long-term prognostic significance of repeated SBP and DBP measurements in the elderly. Patients and Methods: A total of 3858 outpatients 65 years or older (mean age [SD], 72.9 [4.9] years, 43.5% men) were selected randomly by 444 Italian National Health Service general practitioners in 1983. The population was followed up for 10 years. Crude and adjusted incidence rates of total and cardiovascular mortality were analyzed for classes of SBP and DBP based on the values recorded at the 2 initial visits 1 week apart and those measured during the first 12 months of follow-up. Results: During the 10-year follow-up, 74 patients (1.9%) were lost to follow-up and 1561 (41.3%) died, 709 (45.4% of all deaths) from cardiovascular causes. A positive continuous, graded, strong, and independent association was observed with both total (P [is less than] .001) and cardiovascular (P [is less than] .001) mortality for SBP but not for DBP. The pattern was similar in both sexes, in persons younger and older than 75 years, regardless of preexisting cardiovascular diseases, and whether they had been receiving antihypertensive treatment at baseline. There was no J-shaped mortality curve in the subjects with the lowest SBP and DBP. Conclusions: These findings suggest that SBP, but not DBP, is a strong, positive, continuous, independent indicator of mortality risk in the elderly and should be stressed much more than DBP in the diagnosis and treatment of hypertension in this age group. Arch Intern Med. 1999;159:1205-1212

Published
1999

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