1,324 research outputs found
Accuracy of New CT Scanner in the Diagnosis of Coronary In-Stent Restenosis [Response]
No full textComment on: D. Andreini, G. Pontone, S. Mushtaq, A.L. Bartorelli, E. Bertella, D. Trabattoni, P. Montorsi, S. Galli, C. Foti, A. Annoni et al., Coronary in-stent restenosis: assessment with CT coronary angiography. Radiology 2012 Nov; 265(2):410-7. J. Ding, M. Li, G. Sun, Accuracy of new CT scanner in the diagnosis of coronary in-stent restenosis. Radiology. 2013 Apr; 267(1):315-6
Reply
No full textComment on: D. Andreini, G. Pontone, S. Mushtaq, A.L. Bartorelli, E. Bertella, L. Antonioli, A. Formenti, S. Cortinovis, F. Veglia, A. Annoni, et al., A long-term prognostic value of coronary CT angiography in suspected coronary artery disease, JACC Cardiovasc Imaging. 2012 Jul; 5(7):690-701.
P. Goncalves, M.M. Garcia-Garcia, Prognostic value of coronary CT angiography, JACC Cardiovasc Imaging. 2013 Jan; 6(1):127-8
Specchi della Collezione Andreini, nn. 70 e 71
No full textDue specchi etruschi della raccolta Andreini, acquistati nel 1731 da Gian Gastone dei medic
Simple tests and mechanical model for masonry materials at high temperatures
No full textAn experimental procedure for tests on specimens made of several materials is performed to detect the mechanical properties depending from temperature. About 200 cylindrical specimens of several materials (clay, lightweight concrete, aerate autoclaved concrete, mortar) are tested from 20°C to 700°C. The free thermal strain and the decay of axial strength are determined; proposals for the stress-strain curves and the secant modulus of elasticity in function of temperature are illustrated.
The data base from tests are able to calculate the collapse domains (bending moment - axial force - time of exposure to nominal fire) which represent a simple model for the assessment of masonry panel sections subjected to fire action
Simple Tests and Mechanical Model for Masonry Materials at High Temperatures
No full textAn experimental procedure for tests on specimens made of several materials is performed to detect the mechanical properties depending from temperature. About 200 cylindrical specimens of several materials (clay, lightweight concrete, aerate autoclaved concrete, mortar) are tested from 20°C to 700°C. The free thermal strain and the decay of axial strength are determined; proposals for the
stress-strain curves and the secant modulus of elasticity in function of temperature are illustrated. The data base from tests are able to calculate the collapse domains (bending moment - axial force - time of exposure to nominal fire) which represent a simple model for the assessment of masonry panel sections subjected to fire action
Behaviour of masonry walls subjected to fire: experimental tests and analytical model
No full textExperimental tests on blocks for masonry walls made by several materials are performed to detect the compressive strength depending from temperature: about 400 cylinders - diameter D=100 mm height H=200 mm - are tested from 20°C to 700°C of clay, lightweight concrete, aerate autoclaved concrete, calcium silicate. The data base from tests has been used to calculate the collapse domains (bending moment - axial force – time of exposure on fire). A numerical example shows the applicability of the proposed method
Categorie dello "spirito" nella Cina pre-buddhista
No full textEsame del complesso insieme di nozioni che concorrono a definire la concezione dello spirito e degli spiriti nella Cina antic
Il Saggio e l’"insegnamento senza parole” nel Laozi Daodejing
No full textCarisma e autorità del saggio secondo il Laozi Daodejing, il classico della tradizione daoista: la non-azione, il silenzio
Consolidamento sismico di un edificio in c.a. a pilotis anni’60 con setti in c.a. e colonne di presidio in acciaio
No full textThe reinforcement of a r.c. building for council housing estate dated back to the early 60’s has been achieved by
using SCC walls and steel columns at the ground floor, preceded by temporary brick pillars for structural
deficiency to vertical loads. The shape of the building is rectangular with size of 37 m x 11 m and a height of 16 m,
supported by r.c. columns whose section is about 25cm x 25cm and 30cm x 35cm, made up of material with poor
mechanical properties. At the ground level, the lateral load bearing capacity is assured by the clay unit walls of
both stairwells together with the poor load capacity of the columns. The SCC walls have been realized first by
placing steel columns on both sides of the existing pillars and, after removal of the temporary brick piers, by
merging the steel columns in the cast of the new walls. The load bearing condition of clay units outer walls of the
upper floors and of the stairwells are assessed with a 2-D plate model. Foundations have been reinforced to
transmit the collapse performances of the wall and the top of the wall has been connected to the upper floor in order
to receive the shear force
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