12,936 research outputs found
La légère : rédowa pour piano / par G. Alfieri
No full textTitre uniforme : Alfieri, G. (18..-18.. ; compositeur). Compositeur. [La légère. Piano]Piano, Musique de -- +* 1800......- 1899......+:19e siècle:Redowas (piano) -- +* 1800......- 1899......+:19e siècle
Der Morgen-Polka : pour le piano / par G. Alfieri
No full textTitre uniforme : Alfieri, G. (18..-18.. ; compositeur). Compositeur. [Der Morgen-Polka. Piano]Polkas (piano) -- +* 1800......- 1899......+:19e siècle:Piano, Musique de -- +* 1800......- 1899......+:19e siècle
Pindemonte e Alfieri nelle lettere di Byron e William Parsons
No full textAnalisi delle figure di Alfieri e di Pindemonte attraverso le lettere e i diari di William Parsons e di G.G. Byro
Lutero e il concetto moderno di libertà
Full text linkIl saggio sostiene la riconducibilità del concetto di libertà in Lutero al "paradigma moderno": l'autorità secolare è completamente desacralizzata, la sua unica funzione è il mantenimento dell'ordine anche tramite la violenza. Il ruolo dell'autorità è tutto interno al male che affligge inevitabilmente il mondo dopo la caduta. Ma appunto perciò l'autorità secolare non ha nessun ruolo nell'ambito della fede e della coscienza. Qui non esiste altra autorità che quella di Dio, la quale abolisce se stessa in un atto di amore gratuito. Con ciò si fonda la piena sovranità spirituale della coscienza del singolo, che è il findamento del concetto moderno di libertà
The Principle: From a Computational Model to Clinical Validation
No full textIn the early phase of the clinical experience with the Alfieri technique, we were confronted with several unanswered questions in search for an urgent answer. While the technique seemed to be reliable and easy to apply in different settings, the clinical and pathophysiological consequences of creating a double-orifice valve were unknown. The main questions were concerning the hemodynamics of a double-orifice valve: How much the double-orifice configuration affects diastolic transmitral flow? How is the transmitral flow after a symmetric vs. asymmetric double-orifice repair? Are Doppler derived hemodynamics a reliable method to assess transmitral flow dynamics? What is the risk of leaflet tear? What is the risk of generating mitral stenosis when a ring is added to the Alfieri technique? Is turbulent flow associated with higher risk of thromboembolism
Metal functionally graded gyroids: additive manufacturing, mechanical properties, and simulation
No full textFunctionally graded materials raise considerable interest in the biomedical research. In particular, gyroid structures are suitable for bone tissue engineering applications, allowing to emulate the porosity of the inner part of the bone. In this frame, the mechanical properties of 17–4 PH steel gyroids made by additive manufacturing have been investigated. Three design methods have been implemented, i.e., thickness graded, size graded, and uniform, to address the lack of knowledge in the area of stainless-steel scaffolds aiming at providing a map of the mechanical properties. Compressive mechanical properties absorbed energy and absorption efficiency have been found for the aforementioned design methods. Furthermore, defects and collapse behavior have been analyzed: imperfections have been detected in the thin-walled areas of the graded samples. Nevertheless, under given conditions, the graded samples have mechanical properties comparable to those of uniform ones, exhibiting a controlled layer-by-layer collapse mechanism and consequent weight reduction. The Gibson-Ashby models have been implemented, and the calibration coefficients have been compared with other research works. A FEM-based numerical model has been proposed to reproduce the mechanical properties of the mentioned structures finding critical issues in the representation of defects. In this frame, the resulting Gibson Ashby calibration coefficients are in good agreement with the literature and reveal the graded samples have a bending-dominating behavior sustaining larger strains than the uniform case, giving the ground for high energy absorption applications. Furthermore, the FEM analyses are in good agreement with the literature providing a reliable tool to further investigate the metal functionally graded gyroid field
THz SPECTROSCOPY OF THE STATE OF OO and O
No full textAuthor Institution: Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109; I. Physikalisches Institut, Universitat zu Koln, Zulpicher Str. 77, Koln, GermanySubmillimeter-wave rotational spectra of OO and O in the state have been detected in a new static discharge cell useful for studying rare isotopologues of transient molecules. Rotational transition frequencies of both species have been measured through 1.6 THz, to better than 1 part in , allowing precise determination of molecular constants. The first measurements with our static discharge cell provide a check on the isotopic predictions in the state
Structural changes of synthetic paulingite (Na,H-ECR-18) upon dehydration and CO2 adsorption
Full text linkFunding: EPSRCThe structure of dehydrated calcined ECR-18, synthetic paulingite, topology type PAU, unit cell composition Na132H28Si512Al160O1344, has been determined by Rietveld refinement against synchrotron X-ray powder diffraction data. Upon dehydration the symmetry of Na,H-ECR-18 changes from Im3m to I 43m, with a corresponding decrease of cubic unit cell a parameter from 34.89412(1) A to 33.3488(3) A. This occurs as the framework distorts to afford closer coordination of Na+ cations by framework O atoms in 8-ring window sites of the seven cage types present. Na+ cations in 8R sites block the access of N2 molecules to the internal pore space at 77 K but CO2 adsorption at 308 K is observed, and is postulated to occur via a 'trapdoor' mechanism. In situ PXRD during CO2 adsorption at pressures up to 10 bar show reversible broadening of diffraction peaks that is attributed to local crystallographic strain.Peer reviewe
US Army Centrifuge: Progressive collapse testing of a 4-story reinforced concrete structure at 1/18-Scale
No full textA 1/18-scale model of a 4-story reinforced concrete structure was tested at 18 g in the US Army Centrifuge to support the development of computational modeling of progressive collapse of multi-story buildings. The model structure was 4 bays long and 3 bays wide with column spacing about 33 cm in each directions and story height of 20.3 cm. Three columns around one corner at the 1st story were explosively removed while the model was spinning in the centrifuge at 18 g. The column removal resulted in complete collapse the bays above those columns but collapse did not progress to the rest of the structure
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