Search results for "IPM"

showing 10 items of 1361 documents

PORTI DEL SUD. 2. 1 AUGUSTA E IL SUO PORTO

2012

Viene illustrata la suscettività del porto di Augusta, insieme con le difficoltà attuali a fungere da porto di transshipment, nel quadro di un disegno territoriale esteso alla intera isola di Sicilia e ancora all'esterno

Settore ICAR/20 - Tecnica E Pianificazione Urbanisticatransshipment Sicilia infrastrutture portuali infrastrutture dei trasportiSettore ICAR/14 - Composizione Architettonica E Urbana
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Assessing the environmental impact exerted by roads in “operative” conditions - a Highway case-study

2014

Settore ING-IND/11 - Fisica Tecnica Ambientaleroadside equipmentenvironmental impacttransportation system.guardrail
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PMRs Utilizing Non–Pressure-Driven Membrane Techniques

2018

In the present chapter it is shown how photocatalytic membrane reactors utilizing membrane processes, which are not pressure driven, can exploit various mechanisms to obtain a substantial improvement of the process. The fundamentals of this particular type of membrane reactors are reviewed including the effects of the most important parameters and the methods and rules of coupling photocatalysis and membrane separation. The survey of the studies on photocatalytic membrane reactors (PMRs) utilizing pervaporation, dialysis, membrane contactors and membrane distillation offers the opportunity of discussing the advantages with respect to PMRs adopting pressure driven membrane processes. Indeed,…

Settore ING-IND/24 - Principi Di Ingegneria ChimicaMaterials scienceMembrane reactorFoulingbusiness.industrySettore ING-IND/25 - Impianti ChimiciDialysiMembrane distillationMembrane distillationequipment and suppliesphotocatalytic membranes photocatalysis photocatalytic membrane reactorsMembrane technologyMembranePervaporationMembrane reactorsSettore CHIM/07 - Fondamenti Chimici Delle TecnologiePervaporationProcess engineeringbusinessMembrane contactor
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Signal to Noise Ratio of Silicon Photomultipliers: a study in the Continuous Wave Regime

2014

We report on Signal to Noise Ratio measurements carried out, in the continuous wave regime, at different bias voltages, frequencies and temperatures, on a novel class of silicon photomultipliers fabricated in planar technology on silicon p-type substrate. Signal to Noise Ratio has been measured as the ratio of the photogenerated current, filtered and averaged by a lock-in amplifier, and the Root Mean Square deviation of the same current. The measured noise takes into account the shot noise, resulting from the photocurrent and the dark current. We have also performed a comparison between our SiPMs and a photomultiplier tube in terms of Signal to Noise Ratio, as a function of the temperature …

Settore ING-INF/02 - Campi ElettromagneticiSettore ING-INF/01 - Elettronicasipm snr photomultiplier noise silicon
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Rateless Codes Performance Analysis in Correlated Channel Model for GEO Free Space Optics Downlinks

2012

Settore ING-INF/03 - TelecomunicazioniFree Space Optics (FSO) technologies for satellite communications offer several advantages: wide bandwidth high rate capability immunity to electromagnetic interference and small equipment size. Thus they are suitable for inter-satellite links deep space communications and also for high data rate ground-to-satellite/satellite-to-ground communications. Nevertheless FSO links suffer impairments that cause power signal degradation at the receiver. Scattering and absorption cause power signal attenuations predictable by suitable deterministic models. Optical turbulence causes random irradiance fluctuations which can generate signal fading events and can thereby only be predicted by statistical models. Attenuation and fading events can corrupt FSO links and so it would be recommended to add mitigation error codes on the communication link. FSO channel can be described as an erasure channel: fading events can cause erasure errors. We have identified in rateless codes (RCs) a suitable solution to be employed in FSO links. RCs do not need feedback and they add a redundant coding on the source data that allows the receiver to recover the whole payload despite erasure errors. We implemented two different of rateless codes: Luby Transform (LT) and Raptor. We analyzed their performances on a simulated turbulent GEO FSO downlink (1 Gbps - OOK modulation) at a 106 μm wavelength and for different values of zenith angles. Assuming a plane-wave propagation and employing Hufnagel-Valley we modeled the downlink using: 1) a temporal correlated channel model based on Gamma-Gamma probability distribution and 2) an irradiance covariance function that we converted on a time function using Taylor frozen eddies hypothesis. Our new channel model is able to simulate irradiance fluctuations at different turbulence conditions as it will be shown in the full paper. We will also report performance results of LT and Raptor codes at overhead range varying between 0 and 50% and for different values of source packets.Settore ING-INF/01 - Elettronica
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e-Fair: Aggregation in e-Commerce for Exploiting Economies of Scale

2017

In recent years, many new and interesting models of successful online business have been developed, including competitive models such as auctions, where the product price tends to rise, and group-buying, where users cooperate obtaining a dynamic price that tends to go down. We propose the e-fair as a business model for social commerce, where both sellers and buyers are grouped to maximize benefits. e-Fairs extend the group-buying model aggregating demand and supply for price optimization as well as consolidating shipments and optimize withdrawals for guaranteeing additional savings. e-Fairs work upon multiple dimensions: time to aggregate buyers, their geographical distribution, price/quant…

Settore ING-INF/03 - Telecomunicazionie-fair assignment transshipment aggregation optimization
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The liability of the shipmaster in early modern law: comparative (and practice-oriented) remarks

2017

This article deals with the liability of the shipmaster in early modern law in civil and common law, focusing on the approach of Italian and (to a lesser extent) also Iberian courts on the one hand, and on that of common law courts (mostly the King's Bench) on the other. The practice-oriented approach is deliberate: the article seeks to understand what the actual position of the carrier was, not how did learned jurists classify it. Once distinguished practice from dogmatic elaborations (especially for the civil law), this work then proceeds to compare the rules applicable in the two different legal systems. Common law courts imposed strict liability on the shipmaster, for it qualified the c…

Settore IUS/19 - Storia Del Diritto Medievale E ModernoLaw courtsfault and culpa levissimashipmaster liabilityshipmaster
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I Tesori delle Chiese di Gratteri

2005

Si analizzano le suppellettili liturgiche e i parati sacri ancora custoditi nelle chiese di Gratteri mettendoli a confronto con la produzione siciliana coeva The liturgical furnishings and sacred equipments still preserved in the churches of Gratteri are analyzed, comparing them with the coeval Sicilian production

Settore L-ART/04 - Museologia E Critica Artistica E Del RestauroSicily Gratteri liturgical furnishing sacred equipmentsSicilia Gratteri suppellettili liturgiche parati sacriSettore L-ART/02 - Storia Dell'Arte Moderna
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Carbohydrate assimilation profiles of the first Italian Candida dubliniensis clinical isolates recovered from an HIV-infected individual.

2001

A total of six Candida dubliniensis isolates were obtained during 1 year of monitoring by monthly swabs from the oral cavity of an asymptomatic human immunodeficiency virus-infected individual in Catania, Italy. To the authors' knowledge, this constitutes the first recovery of C. dubliniensis from a human in Italy. Our identification procedure was based on colony color on CHROMagar Candida and carbohydrate assimilation profiles obtained by two commercial systems: API ID 32C and API 20C AUX. Karyotyping by pulsed-field gel electrophoresis confirmed the phenotypic identification. The biocodes obtained with API 20C AUX and with API ID 32C were 6172134 and 7142140015, respectively, for all six …

Settore MED/07 - Microbiologia E Microbiologia ClinicaGenotypeHuman immunodeficiency virus (HIV)HIV InfectionsOral cavitymedicine.disease_causeMicrobiologyMicrobiologyFirst isolateCandidiasis OralHiv infectedGenotypemedicineHumansCandida albicansAssimilation profileMolecular BiologyCandidabiologyHIVGeneral MedicineFungi imperfectibacterial infections and mycosesequipment and suppliesbiology.organism_classificationCorpus albicansAIDSPhenotypeItalyCandida dubliniensiKaryotypingCarbohydrate MetabolismCandida dubliniensisResearch in microbiology
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Resistance to disinfection of a polymicrobial association contaminating the surface of elastomeric dental impressions.

2009

The aim of this study was to evaluate the ability to resist disinfection of a polymicrobial association contaminating the surface of dental impressions obtained with two different elastomers: a polyether (Impregum) and an addition-polymerized silicone (Elite). Impressions were contaminated with a mixture of three biofilm-forming microorganisms (Staphylococcus aureus, Pseudomonas aeruginosa and Candida albicans) and disinfected immediately after contamination, or after microbial layers were allowed to develop during a six-hour storage. Two commercial disinfectants were tested: MD 520 containing 0.5% glutaraldehyde and Sterigum Powder without glutaraldehyde. Residual contamination was recover…

Settore MED/07 - Microbiologia E Microbiologia ClinicaStaphylococcus aureusPolyether Addition-polymerized silicone Glutaraldehyde Quaternary ammonium compounds DisinfectionDental Impression MaterialsColony Count MicrobialDental DisinfectantsDisinfectionQuaternary Ammonium CompoundsResins SyntheticSettore MED/28 - Malattie OdontostomatologicheGlutaralBiofilmsCandida albicansMaterials TestingPseudomonas aeruginosaSilicone ElastomersEquipment Contamination
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