Search results for " Opera"
showing 10 items of 3606 documents
Aprovechamiento de las calizas en el Paleolítico medio del Abrigo de la Quebrada (Chelva, Valencia)
2012
Se estudian las cadenas operativas líticas realizadas sobre calizas del nivel III del yacimiento del Paleolítico medio del Abrigo de la Quebrada (Chelva, Valencia). Se caracterizan las calizas locales e identifican las fuentes de aprovisionamiento. Asimismo, se comparan los distintos sistemas operativos utilizados para tallar este material con los de las otras materias primas (sílex y cuarcita), para evaluar el grado de similitud y diferencia en la gestión de esta materia prima. Los datos apuntan a una importante variabilidad y un cierto predominio de un sistema expeditivo. FFI 2008-01200/FISO HAR 2008-04273-E/HIST HAR2011-24878 We approach the chaînes opératoires of limestones found in lev…
Construction of quality indicators based on pre-established goals: application to a colombian public university
2020
This study creates indicators of adequacy and excellence based on multiple-criteria decision-making (MCDM) methods and fuzzy logic. The calculation of indicators presents two main difficulties: The nature of the data (numerical, interval, and linguistic values are mixed) and the objective of each criterion (which does not have to reach either the maximum or the minimum). A method is proposed, based on similarity measures with predetermined ideals, that is capable of overcoming these difficulties to provide easy-to-interpret information about the quality of the alternatives. To illustrate the usefulness of this proposed method, it has been applied to data collected from students across nine …
Determining the effects of Eugenol on the bond strength of resin-based restorative materials to dentin : a meta-analysis of the literature
2020
Este artículo se encuentra disponible en la siguiente URL: https://www.mdpi.com/2076-3417/10/3/1070/htm Este artículo pertenece al número especial " Permanent and long-term biodegradable biomaterials". The aim of this study was to determine whether the residual presence of eugenol in coronal dentin may compromise the bond strength of resin-based restorative materials. A search was performed on MEDLINE/Pubmed, Scopus, and by hand search for relevant papers. No restriction was applied for language and publication date. The studies selected for analysis tested specimens with reduced size (micro-shear bond strength ( SBS) and micro-tensile bond strength ( TBS)) of adhesive systems and resin-bas…
Agenti biologici in ambienti di lavoro non sanitari.
2008
Le Linee Guida su rischi specifici redatte dalla Società Italiana di Medicina del Lavoro offrono ai Medici Competenti di tutto il territorio nazionale la possibilità di orientarsi nell'approccio alla sorveglianza sanitaria rivolta a lavoratori esposti a rischi specifici. Il presente volume affronta la problematica del rischio biologico nei vari contesti lavorativi estranei al comparto della Sanità.
Browsing the information highway while driving: three in-vehicle touch screen scrolling methods and driver distraction
2012
Distraction effects of three alternative touch screen scrolling methods for searching music tracks on a mobile device were studied in a driving simulation experiment with 24 participants. Page-bypage scrolling methods with Buttons or Swipe that better facilitate resumption of visual search following interruptions were expected to lead to more consistent in-vehicle glance durations and thus, on less severe distraction effects than Kinetic scrolling. As predicted, Kinetic scrolling induced decreased visual sampling efficiency and increased visual load compared to Swipe, increased experienced workload compared to both Buttons and Swipe, as well as decreased lane keeping accuracy compared to ba…
TiO2 Nanostructures for Photoelectrocatalytic Degradation of Acetaminophen
2019
[EN] Advanced oxidation processes driven by renewable energy sources are gaining attention in degrading organic pollutants in waste waters in an efficient and sustainable way. The present work is focused on a study of TiO2 nanotubes as photocatalysts for photoelectrocatalytic (PEC) degradation of acetaminophen (AMP) at different pH (3, 7, and 9). In particular, different TiO2 photocatalysts were synthetized by stirring the electrode at different Reynolds numbers (Res) during electrochemical anodization. The morphology of the photocatalysts and their crystalline structure were evaluated by field emission scanning electron microscopy (FESEM) and Raman confocal laser microscopy (RCLM). These a…
Abitare sostenibile: territorio, ambiente, habitat. Il caso di Mulhouse.
2009
A Strapiombo sul Brembo, Recupero delle Ex Legler a Brempate di Sopra
2011
Recarsi agli ex stabilimenti Legler è comprendere un territorio, il Bergamasco, sintesi di molti flagelli geografici nazionali, segni di disastri socioeconomici e antropologici di un paese depresso. Paesaggi bellissimi, variegati e complessi, falciati da prostituzioni finanziarie, amministrazioni, imprenditori del mattone, e, non ultimi, noi architetti. Disgregazione culturale, crisi del lavoro, villette a schiera, disordine, fabbriche e fabbrichette, industrie dismesse, abbandono.
Accuracy of Transient Elastography in Assessing Fibrosis at Diagnosis in Naïve Patients With Primary Biliary Cholangitis: A Dual Cut-Off Approach
2021
Background & aims Liver fibrosis holds a relevant prognostic meaning in primary biliary cholangitis (PBC). Non-invasive fibrosis evaluation using vibration-controlled transient elastography (VCTE) is routinely performed. However, there is limited evidence on its accuracy at diagnosis in PBC. We aimed to estimate the diagnostic accuracy of VCTE in assessing advanced fibrosis at disease presentation in PBC. Approach & results We collected data from 167 consecutive treatment-naive PBC patients who underwent liver biopsy(LB) at diagnosis at six Italian centers. VCTE examinations were completed within 12 weeks of LB. Biopsies were scored by two blinded expert pathologists, according to Ludwig sy…
Valutazione metodologica della contaminazione microbica dell’aria in sala operatoria: campionamento attivo e campionamento passivo
2010
OBIETTIVI: Valutazione della qualità microbiologica dell’aria nelle sale operatorie dell’A.O.U.P. “P. Giaccone” di Palermo mediante metodi di campionamento attivo e passivo. MATERIALI: Nel secondo semestre del 2009 sono stati effettuati campionamenti di aria in 20 sale operatorie (10 a flusso laminare e 10 a flusso turbolento) sia in condizioni di attività sia in condizioni di riposo. I punti di prelievo per il campionamento attivo sono stati: 1) il centro stanza 2) il VCCC; per il campionamento passivo 1) centro stanza 2) fondo stanza. Sono stati monitorati i seguenti parametri: carica batterica totale (CBT), carica micetica totale (CMT), Staphilococcus aureus ed Indice Microbico Aria (IMA…