Search results for "Equipment"

showing 10 items of 1271 documents

Energy Efficient Resource Allocation for Wireless Power Transfer Enabled Collaborative Mobile Clouds

2016

In order to fully enjoy high rate broadband multimedia services, prolonging the battery lifetime of user equipment is critical for mobile users, especially for smartphone users. In this paper, the problem of distributing cellular data via a wireless power transfer enabled collaborative mobile cloud (WeCMC) in an energy efficient manner is investigated. WeCMC is formed by a group of users who have both functionalities of information decoding and energy harvesting, and are interested for cooperating in downloading content from the operators. Through device-to-device communications, the users inside WeCMC are able to cooperate during the downloading procedure and offload data from the base sta…

ScheduleenergiatehokkuusComputer Networks and CommunicationsComputer sciencewireless power transfer02 engineering and technology7. Clean energyBase station0203 mechanical engineeringresources allocation0202 electrical engineering electronic engineering information engineeringWirelessResource managementElectrical and Electronic Engineeringenergy efficiencyta113collaborative mobile cloudscontent distributionta213business.industryQuality of service020206 networking & telecommunications020302 automobile design & engineeringEnergy consumptionUser equipmentMobile telephonybusinessComputer networkEfficient energy useIEEE Journal on Selected Areas in Communications
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Pressure induced enhancement of the magnetic ordering temperature in rhenium(IV) monomers

2016

Materials that demonstrate long-range magnetic order are synonymous with information storage and the electronics industry, with the phenomenon commonly associated with metals, metal alloys or metal oxides and sulfides. A lesser known family of magnetically ordered complexes are the monometallic compounds of highly anisotropic d-block transition metals; the ‘transformation' from isolated zero-dimensional molecule to ordered, spin-canted, three-dimensional lattice being the result of through-space interactions arising from the combination of large magnetic anisotropy and spin-delocalization from metal to ligand which induces important intermolecular contacts. Here we report the effect of pres…

ScienceQCondensed Matter::Strongly Correlated ElectronsQDequipment and suppliesArticle
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Persistence of wild Streptococcus thermophilus strains on wooden vat and during the manufacture of a traditional Caciocavallo type cheese

2012

The present work was undertaken to evaluate the influence of the wooden dairy plant equipment on the microbiological characteristics of curd to be transformed into Caciocavallo Palermitano cheese. Traditional raw milk productions were performed concomitantly with standard cheese making trials carried out in stainless steel vat inoculated with a commercial starter. Milk from two different farms (A and B) was separately processed. The wooden vat was found to be a reservoir of lactic acid bacteria (LAB), while unwanted (spoilage and/or pathogenic) microorganisms were not hosted or were present at very low levels. All microbial groups were numerically different in bulk milks, showing higher lev…

Settore AGR/19 - Zootecnica SpecialeStreptococcus thermophilusWeissellaLactococcusFood spoilageStreptococcus thermophiluMicrobiologyStarterCheeseRNA Ribosomal 16SLactobacillusAnimalsStreptococcus thermophilusLeuconostocFood scienceBacteriabiologyLactic acid bacteria biodiversityWooden dairy plant equipmentfood and beveragesGeneral MedicineRaw milk“Pasta filata” cheesebiology.organism_classificationWoodDairyingMilkLactic acid bacteria biodiversity; “Pasta filata” cheese; Streptococcus thermophilus; Wooden dairy plant equipmentFood MicrobiologySettore AGR/16 - Microbiologia AgrariaFood ScienceInternational Journal of Food Microbiology
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The Cozzo Disi mine (Casteltermini, Sicily, Italy) a multi-disciplinary approach to record, study, preserve and develop the mining heritage in Sicily

2015

Cozzo Disi was one of the main sulphur mines in Italy, but after the closure and more than 10 years of desertion, urgent works are now necessary to save it from vandalism and flooding. This big mine contains geological and mineralogical peculiarities, so uncommon to be sometimes unique: this is the case of the “Grandi Garbere” at 3rd level, majestic karst cavities, containing magnificent selenite crystals documented by old miners. The possibility to have a “Sicilian Naica” attracted a multi-disciplinary underground task-force, now exploring the mine underground, in order to inspect old works and their good-safety conditions, and to achieve the rooms/caves of “Grandi Garbere”. This extraordi…

Settore GEO/04 - Geografia Fisica E Geomorfologiamine Grandi Garbere Sicilian Naica hydrogen sulfide equipment.
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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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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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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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