Search results for "techniques"

showing 10 items of 4426 documents

Diffuse soil CO2 degassing from Linosa island

2014

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Volcano monitoringLineamentGeochemistrysoil degassingfluid geochemistryCO2lcsh:QC851-999Instruments and techniques; Soil degassing; Volcano monitoring; GeophysicsSequential Gaussian simulationSoil co2 fluxFlux (metallurgy)Soil degassingGeomorphologygeographygeography.geographical_feature_categoryRiftlcsh:QC801-809Instruments and techniquesSettore GEO/08 - Geochimica E VulcanologiaTectonicslcsh:Geophysics. Cosmic physicsGeophysicsVolcanoLinosaSoil CO_2 fluxlcsh:Meteorology. ClimatologyGeologyChannel (geography)
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Influence of soil surface sealing and hydrophobicity on water infiltration

Nella tesi viene affrontato lo studio dell’impatto dei fenomeni di sealing superficiale e di idrofobicità sui processi di infiltrazione dell’acqua nel suolo. A tal fine vengono utilizzati diversi tipi di esperimenti infiltrometrici che consentono di determinare le modificazioni delle proprietà idrauliche del suolo indotte da questi due fenomeni permettendo di valutare così le loro ripercussioni negative sui processi idrologici. The thesis aims at investigating the effects of soil sealing and hydrophobicity on the water infiltration process. Different field infiltrometric techniques are applied at this end due to their ability to characterize modifications of soil hydraulic properties that d…

WDPTHydraulic conductivityHydrophobicityMEDRepellency indexSoil water repellencyCrustInfiltrometer techniqueWater infiltrationSurface sealing; Crust; Hydrophobicity; Soil water repellency; Water infiltration; Infiltrometer techniques; BEST; Minidisk infiltrometer; Hydraulic conductivity; Sorptivity; WDPT; MED; Repellency index; LeachingMinidisk infiltrometerLeachingSorptivitySettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliSurface sealingBEST
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Comparison of higher order aberrations measured by NIDEK OPD-Scan dynamic skiascopy and Zeiss WASCA Hartmann-Shack aberrometers.

2008

<h4>PURPOSE</h4><p>To compare the measurement of wavefront aberrations in non-cyclopleged human eyes with Hartmann-Shack and dynamic skiascopy wavefront analyzers.</p> <h4>METHODS</h4><p>Eighty eyes of 40 healthy young adults (19 men, 21 women; mean age 20.8±2.5 years) with refractive errors ranging from +1.50 to –9.75 diopters (D) sphere and up to 1.75 D cylinder (mean spherical equivalent refraction –2.12±2.69 D) were examined with the Zeiss/Meditec WASCA and NIDEK OPD-Scan wavefront analyzers and with the Nippon SRW5000 binocular, open-field autorefractor without the instillation of antimuscarinic agents. Three measurements were taken with each s…

WavefrontAdultMalegenetic structuresbusiness.industrymedicine.medical_treatmentReproducibility of ResultsClinical settingsDiagnostic Techniques OphthalmologicalRefraction OcularRefractive Errorseye diseasesOphthalmologyAberrations of the eyeOpticsRefractive surgerymedicineOptometryHumansSurgeryFemalebusinessNatural stateMathematicsWavefront analysisJournal of refractive surgery (Thorofare, N.J. : 1995)
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Pyrosequencing vs. culture-dependent approaches to analyze lactic acid bacteria associated to chicha, a traditional maize-based fermented beverage fr…

2015

The diversity of lactic acid bacteria (LAB) associated with chicha, a traditional maize-based fermented alcoholicbeverage from Northwestern Argentina, was analyzed using culture-dependent and culture-independent approaches.Samples corresponding to 10 production steps were obtained from two local producers at Maimará(chicha M) and Tumbaya (chicha T). Whereas by culture-dependent approach a few number of species(Lactobacillus plantarum and Weissella viridescens in chicha M, and Enterococcus faecium and Leuconostocmesenteroides in chicha T) were identified, a higher quantitative distribution of taxa was found in both beveragesby pyrosequencing. The relative abundance of OTUs was higher in chic…

WeissellaCHICHAOtras Ciencias BiológicasLactococcusPopulationDIVERSITYArgentinaColony Count MicrobialPYROSEQUENCINGMicrobiologyPolymerase Chain ReactionZea maysMicrobiologyCiencias BiológicasBeveragesLACTIC ACID BACTERIALactobacillalesRNA Ribosomal 16SLactic acid bacteriaLeuconostoceducationDiversityeducation.field_of_studybiologyISR RAPD PROFILESfood and beveragesGeneral MedicineBiodiversitySequence Analysis DNAbiology.organism_classificationBacterial Typing TechniquesRandom Amplified Polymorphic DNA TechniqueLeuconostoc mesenteroidesSettore AGR/16 - MICROBIOLOGIA AGRARIAFermentationChichabacteria16S rRNA SEQUENCINGPediococcusIdentification by molecular techniques High-throughput sequencing (HTS)HIGH-TROUGHPUT SEQUENCING (HTS)CIENCIAS NATURALES Y EXACTASLactobacillus plantarumFood ScienceEnterococcus faeciumInternational journal of food microbiology
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Characterization of sourdough lactic acid bacteria based on genotypic and cell-wall protein analyses

2003

Abstract Aims: To evaluate the effectiveness of two independent methods in differentiating a large population of lactic acid bacteria (LAB) isolated from wheat flours and sourdoughs and to correlate eventual differences/similarities among strains with their geographical origin and/or process parameters. Methods and Results: One hundred fifty strains belonging to Lactobacillus spp. and Weissella spp., plus eight type strains, one for each species, and two unidentified isolates, were characterized by randomly amplified polymorphic DNA (RAPD) and SDS-PAGE of cell-wall proteins. The RAPD analysis separated the eight type strains but did not always assign all the strains of a species to the same…

WeissellaGenotypeMicroorganismBiologyApplied Microbiology and BiotechnologyMicrobiologychemistry.chemical_compoundBacterial ProteinsCell WallLactobacillusGenotypeHumansTypingFood scienceLactic AcidTriticumfood and beveragesGeneral MedicineBreadbiology.organism_classificationLactic acidRAPDBacterial Typing TechniquesRandom Amplified Polymorphic DNA TechniqueLactobacilluschemistrybatteri lattici tipizzazione biodiversitàFermentationElectrophoresis Polyacrylamide GelBacteriaBiotechnology
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Wickerhamomyces sylviae f.a., sp. nov., an ascomycetous yeast species isolated from migratory birds.

2013

In the present work, we investigated the phylogenetic position and phenotypic characteristics of eight yeast isolates collected from migratory birds on the island of Ustica, Italy. A phylogenetic analysis based on the D1/D2 region of the large-subunit rRNA gene showed that all isolates clustered as a single separate lineage within the Wickerhamomyces clade. They exhibited distinct morphological and physiological characteristics and were clearly separated from their closest relatives, Wickerhamomyces lynferdii, Wickerhamomyces anomalus and Wickerhamomyces subpelliculosus, in blastn searches. On the basis of the isolation source, physiological features and molecular strain typing carried out …

Wickerhamomyces anomalusLineage (evolution)Molecular Sequence DataWickerhamomyces; Birds; YeastZoologyMinisatellite RepeatsBiologyWickerhamomyceMicrobiologyBirdsWickerhamomycesBirdPhylogeneticsBotanyRibosome SubunitsAnimalsDNA FungalMycological Typing TechniquesEcology Evolution Behavior and SystematicsPhylogenyIslandsPhylogenetic treeFungal geneticsDNAGeneral MedicineSequence Analysis DNARibosomal RNARibosome Subunits Large EukaryoticDNA FingerprintingYeastRAPDRandom Amplified Polymorphic DNA TechniqueFungalAnimal Migration; Animals; Birds; DNA Fingerprinting; DNA Fungal; Islands; Italy; Minisatellite Repeats; Molecular Sequence Data; Mycological Typing Techniques; Random Amplified Polymorphic DNA Technique; Ribosome Subunits Large Eukaryotic; Saccharomycetales; Sequence Analysis DNA; PhylogenyItalySaccharomycetalesLargeEukaryoticAnimal MigrationSequence AnalysisSettore AGR/16 - Microbiologia AgrariaInternational journal of systematic and evolutionary microbiology
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Searching the most appropriate sample pretreatment for the elemental analysis of wines by inductively coupled plasma-based techniques.

2008

Different sample preparation methods were evaluated for the simultaneous multielement analysis of wine samples by inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS). Microwave-assisted digestion in closed vessel, thermal digestion in open reactor, and direct sample dilution were considered for the determination of Li, Be, Na, Mg, Al, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Y, Mo, Cd, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Tl, Pb, and Bi in 12 samples of red wine from Valencia and Utiel-Requena protected designation of origin. ICP-MS allows the determination of 17 elements in most…

WinebiologyChemistryAnalytical chemistryWineGeneral Chemistrybiology.organism_classificationDecompositionChemistry Techniques AnalyticalMass SpectrometryTrace ElementsElemental analysisInductively coupled plasma atomic emission spectroscopySample preparationInductively coupled plasmaGeneral Agricultural and Biological SciencesMicrowavesValenciaInductively coupled plasma mass spectrometryJournal of agricultural and food chemistry
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La cultura ci salverà? Processi di touristification a base culturale nel centro storico di Palermo

2023

Negli ultimi tre decenni la cultura ha avuto un ruolo chiave nella costruzione delle politiche urbane, divenendo uno strumento decisivo nella definizione delle strategie di sviluppo economico e nell’accesso alla competizione globale che caratterizzano l’attuale regime di neoliberismo urbano (Miles e Paddison 2005). Anche nel sud Europa la cosiddetta rigenerazione a base culturale ha rappresentato e continua ancora oggi a rappresentare una vera e propria ortodossia urbana, che trova nel turismo tanto una ragione di esistenza quanto un campo di attuazione. In particolare, negli ultimi anni i centri storici di molte città sudeuropee sono stati oggetto di trasformazioni profonde in cui pratiche…

Within this framework Palermo and its historic center are no exception. The epicenter of these processes is represented here by the Kalsa district which since the early 2000s has been placed at the center of a precise strategy of culturally-based renewal called to drive the city's tourist renaissance (Vinci 2008). The culmination of this path came in 2018 when Palermo was named the Italian capital of culture and chosen as the venue for Manifesta one of the most prestigious traveling biennales of contemporary art. However the exponential increase in tourist arrivals in the last three years came to a halt with the outbreak of the pandemic which showed with unprecedented evidence the contradictions of the development strategies pursued in the historic center and the marks they leave on the territories. While this sudden interruption seems to offer an opportunity to radically rethink urban and cultural policies and find new curbs to the conditions of overtourism in which the historic centers of South European cities and beyond find themselves it could also prove to be an accelerator of the dynamics of commodification of these spaces representing the revival of tourism an easy escape route in times of crisis. The objective of this contribution is to critically explore the urban and social transformations that have crossed the Kalsa district of Palermo from the 2000s to the present using qualitative and quantitative techniques (analysis of statistical data in-depth interviews critical discourse analysis ...) with particular reference to the role that culture has played in these processes. While it is impossible to prefigure post-pandemic scenarios we will examine documents and discourses that trace possible development directions for South European cities and their historic centers.Settore ICAR/21 - UrbanisticaSettore M-GGR/01 - Geografia
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User-oriented evaluation of mechanical single-channel axial pipettes.

2013

Hand tools should be designed so that they are comfortable to use, fit the hand and are user-oriented. Six different manual, single-channel axial pipettes were evaluated for such objective outcomes as muscular activity, wrist postures and efficiency, as well as for subjective outcomes concerning self-assessed features of pipette usability and musculoskeletal strain. Ten experienced laboratory employees volunteered for the study. The results showed that light and short pipettes with better tool comfort resulted in reduced muscular activity and perceived musculoskeletal strain when they were compared with a long and heavy pipette. There were no differences in the efficiency between the differ…

Wrist JointEngineeringCumulative Trauma DisordersSurface PropertiesPhysical Therapy Sports Therapy and RehabilitationHuman Factors and ErgonomicsEfficiencyPersonal SatisfactionHand toolFingersIsometric ContractionTask Performance and AnalysisHumansUser orientedSafety Risk Reliability and QualityEngineering (miscellaneous)Man-Machine SystemsSimulationArthrometry Articularbusiness.industryClinical Laboratory TechniquesElectromyographyWork (physics)PipetteHand InjuriesUsabilityta3142Equipment DesignHandCumulative trauma disorderOccupational DiseasesForearmLaboratory PersonnelCross-Sectional StudiesAttitudeNew product developmentFemaleErgonomicsbusinessCommunication channelApplied ergonomics
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Science case study and scientific simulations for the enhanced X-ray Timing Polarimetry mission, eXTP

2022

The X-ray astronomy mission eXTP (enhanced X-ray Timing Polarimetry) is designed to study matter under extreme conditions of density, gravity and magnetism. Primary goals are the determination of the equation of state (EoS) of matter at supranuclear density, the physics in extremely strong magnetic fields, the study of accretion in strong-field gravity (SFG) regime. Primary targets include isolated and binary neutron stars, strong magneticfield systems like magnetars, and stellar-mass and supermassive black holes. In this paper we report about key observations and simulations with eXTP on the primary objectives involving accretion under SFG regimes and determination of NS-EoS.

X-raymethods and techniquesdense matterSettore FIS/05 - Astronomia E AstrofisicaaccretionNeutron starBlack HoleAstronomical instrumentation
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