3,127 research outputs found
AGLAIA: un dispositivo elettromedicale per il rilievo dei suoni polmonari
No full textIn questo lavoro si è progettato e realizzato
un innovativo dispositivo elettromedicale,
denominato "Aglaia", che si avvale delle tecnologie elettroniche
ed informatiche più avanzate e che in maniera
non invasiva e non fastidiosa per il paziente, tramite
la sola acquisizione e post-elaborazione tridimensionale
(3-D) dei suoni polmonari, consente un monitoraggio
altamente affidabile della funzionalità respiratoria
con lo scopo sia di prevenire patologie acute, che
Aglaia consente di rilevare allo stato incipiente o addirittura
latente, sia di verificare in tempo reale l'efficacia
di una terapia curativa di patologie in atto a carico
dell'apparato respiratorio.
Grazie ad una specifica sensoristica di rilevamento,
composta da sensori acustici e/o di vibrazione applicati
attraverso una fascia elastica indossabile o, alternativamente,
applicati singolarmente tramite nastri adesivi,
Aglaia consente un efficace acquisizione, un'accurata
elaborazione ed una dettagliata visualizzazione di
tutti i possibili suoni respiratori, eliminando la soggettività
d'interpretazione dei suddetti suoni prelevati tramite
stetoscopio.In this paper we have designed, realized
and tested an innovative, low-cost, electronic
medical device, named "Aglaia", which is a completely
new technological tool designed for the non-invasive
continuous real-time monitoring of breathing functions.
It diagnoses respiratory pathologies by the electronic
three dimensional (3-D) auscultation of lung sounds
and performing a correlation between lung sounds and
diseases. Both incipient and advanced respiratory
pathologies are detected.Thanks to its specific sensors,
which can be applied to the body chest with a wearable
elastic band or attached separately with adhesive
tape, Aglaia allows the effective auscultation, the accurate
processing and the detailed visualization (temporal
and frequency graphs) of any lung sound. When
using a simple stethoscope, the recognition and differentiation
of lung sounds depends on the individual's
hearing abilities, experience and skilfulness; then, the
auscultation and interpretation of sounds performed
by means of electronic stethoscope has a consistent
subjective component. Aglaia goes beyond the stethoscope
both to automatically process the acquired
signal (thereby removing subjectivity) and to perform
3-D auscultation by placing sensors all over the thorax
Un dispositivo intelligente per la prevenzione di patologie polmonari
No full textLa sopravvivenza di pazienti sottoposti a terapia intensiva è spesso legata alla ventilazione meccanica, una tecnica che supplisce a gravi insufficienze respiratorie ma che può riservare rischi anche letali. E’ possibile ridurre drasticamente tali rischi tramite un appropriato monitoraggio della meccanica respiratoria. Risultano, allo scopo, necessari dispositivi elettromedicali dedicati, innovativi ed intelligenti
A imagem de Alessandro Baricco no Brasil
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Estudos da Tradução, Florianópolis, 2013.Com a intenção de delinear o modo pelo qual o escritor italiano Alessandro Baricco se inseriu no sistema literário brasileiro e os caminhos percorridos pelos seus livros traduzidos, esta dissertação dá voz às experiências tradutórias de seus tradutores. A inserção de Bariccono Brasil tem seu início em 1997, através de uma proposição da Profa. Dra. Roberta Barni à editora Iluminuras da tradução de Oceano Mare. A partir daí, outras sete obras foram publicadas no Brasil, sendo três delas traduzidas por Roberta Barni e as outras quatro por quatro tradutores diferentes. De um lado, considera-se o tradutor como figura principal namediação entre culturas, e, de outro, se analisa a realidade desta figuradentro do sistema literário, sua invisibilidade, seus limites e o exercíciode sua profissão. A pesquisa conta, ainda, com críticas e resenhas referentes ao autor italiano publicadas em jornais consagrados no Brasil, considerando estas como parte constituinte da imagem de Baricco refletida em território nacional. Abstract : Intending to delineate the way the Italian writer Alessandro Baricco has been inserted in the Brazilian literary system and the paths his translated books have followed, this thesis gives voice to the translating experiences of his translators. Baricco's insertion in Brazil began in 1997, through a personal project of Dr. Roberta Barni, with her translation of Oceano Mare. Since then, seven other of his works have been published in Brazil, three of which were translated by Roberta Barni and the other four by four different translators. On the one hand,the translator is considered as the main figure in mediation betweencultures and, on the other, this figure's reality is analyzed within theliterary system: its invisibility, its limits and its professional practice. Criticisms and reviews of this Italian author published in well established Brazilian newspapers are also considered, with the understanding that they are part of Baricco's image reflected here
Progetto e realizzazione di un dispositivo elettromedicale miniaturizzato per il monitoraggio non invasivo della saturazione in ossigeno dell’emoglobina nel sangue
No full textIn questo lavoro si è progettato e realizzato un dispositivo elettromedicale per il monitoraggio non
invasivo della saturazione in ossigeno dell’emoglobina nel sangue (transmission pulse oxymeter), con l’obiettivo di
miniaturizzare il dispositivo e rendere più accurata la misura. Questo è stato possibile impiegando un particolare
circuito integrato, il PSoC, una famiglia di system on chip che integrano due array programmabili – uno analogico ed
uno digitale – in grado di conferire al dispositivo la massima semplicità di impiego ed elevata immunità al rumore.
Tutti i dispositivi analogici e digitali necessari per il condizionamento del segnale acquisito da un sensore ottico sono
presenti internamente al chip. A tal fine è stato sufficiente configurare - tramite un apposito software di sviluppo, la
funzione svolta dai vari blocchi interni, potendo scegliere fra molteplici applicazioni.In this paper a new medical device for the non invasive monitoring of the oxygen saturation in the blood has been designed, realized and tested to obtain an ultra-small device having a very high noise immunity. This goal has been reached by using a particular Integrated Circuit, the PsoC, a Programmable System on Chip which integrates two programmable array, one analog and one digital, to obtain a device with a very large capabilities. In fact, it has been necessary only to configurate, by an appropriate software, the function of the different internal blocks choosing among the numerous applications
La maturità di Alessandro Fei del Barbiere, in bilico tra Maniera e Riforma
No full textThis article studies the mature career of the Florentine painter Alessandro Fei del Barbiere (1537-1592), beginning with the rediscovery of the 'Ascension' altarpiece formerly in the Albizi Chapel in the destroyed church of San Pier Maggiore, Florence. Studying this painting and others recorded in 1584 by the biographer Raffaello Borghini, such as the two altarpieces for Santa Maria delle Grazie and the Madonna dell'Umiltà in Pistoia, the author reconstructs a body of works showing how in the 1580s Fei gradually went beyond the archaic style of his apprenticeship - he had been trained by Ridolfo del Ghirlandaio and Pierfrancesco Foschi, but was also marked by the Maniera of Vasari - evolving towards naturalism in both mimesis and pictorial handling. In Florence, his development partly parallels that of Santi di Tito and his circle, but Fei was also influenced by a probable sojourn during the early part of that decade in Rome, where he could have been inspired by Girolamo Muziano and the painters working for Pope Gregory XIII. Among other proposals, the author suggests that the artist was responsible for decorating the chancel of Fiesole Cathedral (c. 1584-1589), which consisted of an altarpiece, only rarely discussed by scholars, and a cycle of frescoes hitherto attributed to Nicodemo Ferrucci
Tra socialdemocrazie e Perestrojka. Le relazioni internazionali del Pci attraverso le carte di Alessandro Natta
No full textThis essay reconstructs the foreign policy of the Italian Communist Party during the four
years of Alessandro Natta’s secretariat (1984-1988) through largely original archival documentation,
from the Alessandro Natta Fonds of the Historical Archive of the Chamber of
Deputies. Natta’s papers are also cross-referenced with those kept in the PCI Archive at the
Gramsci Foundation. The author analyses the relationship that the PCI establishes with
Gorbachev’s Perestroika, Deng’s China, and European social democracies during the last
years of the Cold War
Volta Alessandro
No full textThe New Dictionary of Scientific Biography (extension and updating of the Dictionary of Scientific Biography) is one of the most substantial reference works in the field of the history of science. An up-to-date overview on Alessandro Volta's science with new perspectives offered by the author. Information and critical analysis is also provided on the main secondary literature produced on this main protagonist of enlightenment science after the 1976 entry "Volta Alessandro" in the Dictionary of Scientific Biography
Coherent perfect absorption and transparency in lossy and loss/gain metasurface-embedding structures
No full textIn this paper we report about the possibility to control a strong signal beam with a much weaker control beam, resorting to the linear optical phenomena known as coherent perfect absorption and transparency (CPA and CPT). First, analytical formulas for CPA and CPT in a realistic yet prototypical configuration of a substrate-backed optically conducting surface (graphene, metallic metasurface...) are reported. Maximal optical control can be achieved by only imposing the conditions for CPA, since CPT is always present in this system. Secondly, we observe that the performance of passive two-port devices as optical switches is always limited by fundamental energy conservation constraints. Meanwhile, we outline how a hybrid gain/loss optical device reminiscent of parity-time symmetric objects can overcome such limitation, enabling the realization of ideal full optical control
"Muy señor nuestro Alessandro Varaldo". La ricognizione del mondo spagnolo e portoghese per riscoprire un autore italiano di successo ma dimenticato
No full textWho is Alessandro Varaldo (1876-1953)? This first analysis about what was said, adapted and translated of Varaldo’s work in the Iberian Peninsula and South America, maybe the only areas outside Italy where some traces of Italian author can be found, is a chance to go along his literary paths that overtook two temporal barriers (1900 and 1950), although it has not overtaken the oblivion’s threshold.Questa è una prima ricognizione di ciò che è stato detto, adattato e tradotto di Alessandro Varaldo (1876-1953) nella Penisola iberica e in Sud America, che si sospetta siano gli unici territori stranieri dove si riesca a ritracciare qualcosa dell’autore italiano, ed è un’occasione per ripercorrerne la traiettoria letteraria che ha superato due transenne temporali come il 1900 e il 1950 ma non quella della dimenticanza
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