Search results for "HRT"

showing 10 items of 22 documents

The influence of the anatase nanoparticles boundaries on the titania activity performance

2014

Metal oxides structures, formed by ordered self-assembling of crystalline nanoparticles aggregates, are attracting growing attention in fields such as catalysis or solar cells. The properties of these structures are influenced not only by their morphology and nanoparticles composition but also by the assembled particles boundaries. In order to determine the influence of these boundaries on the structures properties, the present investigation has been devoted to study the characteristics of anatase nanoparticles boundaries in titania aggregates prepared by TiCl4 hydrolysis at low temperature. Proton magic angle spinning nuclear magnetic resonance and high resolution transmission electron mic…

AnataseHRTEMDopantChemistryinter-particles electron transfer [Anatase nanoparticles boundaries]Inorganic chemistryNanoparticleCatalysisCatalysisAmorphous solidChemical engineering4-Methoxybenzyl alcohol partial oxidationMagic angle spinningPhysical and Theoretical ChemistryHigh-resolution transmission electron microscopyMesoporous materialAnatase nanoparticles boundaries: inter-particles electron transferAmorphous titaniaJournal of Catalysis 309: 97-104 (2014)
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Anatase nanoparticles boundaries resulting from titanium tetrachloride hydrolysis

2017

An important factor that governs solar energy transformation into electrical or chemical energy, when using nanoparticles-based devices, is the spatial location of traps limiting electron transport. Evidences have been presented indicating that the electron diffusion is strongly influenced by nanoparticle boundaries, whose characteristics depend on the particles preparation. In the present work we have studied the role of hydrated excess proton structures in the formation of anatase nanoparticles boundaries in samples prepared by TiCl4 hydrolysis at low temperature and strong acidic conditions. The samples, constituted by anatase nanocrystals but, mainly, by amorphous titania, are studied b…

AnataseMaterials scienceInorganic chemistryNanoparticle02 engineering and technology010402 general chemistry01 natural sciencesCatalysisTitania particles agglomerationchemistry.chemical_compoundNMR spectroscopyTitanium tetrachlorideHRTEM techniqueHigh-resolution transmission electron microscopyTitania preparationSolvationGeneral Chemistry021001 nanoscience & nanotechnology0104 chemical sciencesAmorphous solidNanocrystalchemistryChemical engineeringRutile0210 nano-technologyTiCl4 hydrolysisAmorphous layersCatalysis Today
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L’uso del hrTSH nel follow up del microcarcinoma tiroideo in pazienti sottoposti a tiroidectomia totale

2004

CARCINOMA DELLA TIROIDE hrTSHSettore MED/13 - Endocrinologia
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A Parallel Approach to HRTF Approximation and Interpolation Based on a Parametric Filter Model

2017

[EN] Spatial audio-rendering techniques using head-related transfer functions (HRTFs) are currently used in many different contexts such as immersive teleconferencing systems, gaming, or 3-D audio reproduction. Since all these applications usually involve real-time constraints, efficient processing structures for HRTF modeling and interpolation are necessary for providing real-time binaural audio solutions. This letter presents a parametric parallel model that allows us to perform HRTF filtering and interpolation efficiently from an input HRTF dataset. The resulting model, which is an adaptation from a recently proposed modeling technique, not only reduces the size of HRTF datasets signific…

Computer scienceparallel filters02 engineering and technologySolid modelingbinaural synthesisTransfer functionTECNOLOGIA ELECTRONICA030507 speech-language pathology & audiology03 medical and health sciencesgraphic processing unit (GPU)0202 electrical engineering electronic engineering information engineeringCIENCIAS DE LA COMPUTACION E INTELIGENCIA ARTIFICIALhead-related transfer function (HRTF) modelingComputer visionElectrical and Electronic EngineeringAdaptation (computer science)Parametric statisticsbusiness.industryApplied MathematicsTeleconferenceBinaural synthesis020206 networking & telecommunicationsFilter (signal processing)interpolationInterpolationGraphic processing unit (GPU)Signal ProcessingHead-related transfer function (HRTF) modelingParallel filtersArtificial intelligence0305 other medical sciencebusinessAlgorithmInterpolation
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Ovarian tissue cryopreservation and transplantation in menopause: new perspective of therapy in postmenopausal women and the importance of ethical an…

2023

Menopausal transition entails a progressive decrease in hormone production by the ovaries that lead to important physical and psychological changes that could significantly affect quality of life. Hormone replacement therapy (HRT) administered from the onset of menopausal symptoms usually improves quality of life and life expectancy. Nevertheless, it is not risk-free. Ovarian tissue cryopreservation (OTC) has been investigated as a potential new strategy for delaying menopause and/or to avoid HRT. This review analyzes the critical points of HRT to assess whether OTC and subsequent reimplantation can affect postmenopausal management. We assessed available randomized clinical trials in PubMed…

CryopreservationCounselingTransplantationEstrogen Replacement TherapyEstrogensGuidelinesHormone replacement therapy (HRT)Settore MED/40 - Ginecologia E OstetriciaPostmenopauseOvarian tissue cryopreservation (OTC)Medicolegal viabilityQuality of LifeHumansOsteoporosisFemaleMenopause
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Circolazione e sviluppo di un modello metodologico. La critica testuale delle fonti giuridiche romane fra Otto Gradenwitz e Salvatore Riccobono

2018

La ricerca delle interpolazioni, cominciata con la Scula culta, viene ripresa in Germania alla fine del XIX secolo. Fra quanti misero a punto un metodo storico-critico per lo studio delle fonti giuridiche romane va menzionato anche Gradenwitz, che – insieme ad altri studiosi tedeschi – sarebbe stato uno dei maestri di Riccobono. La prima produzione scientifica di Riccobono, che si riconosce nel nuovo indirizzo storico-critico affermatosi in Germania, si avvale dei metodi appresi dai maestri tedeschi. Lungo questo solco, tuttavia, comincia l’elaborazione di un metodo più raffinato, che distingue fra interpolazioni formali e interpolazioni sostanziali e recupera gradualmente altri strumenti d…

Die Suche nach Interpolationen begonnen im Humanismus wird in Deutschland im späten 19. Jh. wieder aufgenommen. Unter denen die eine historisch-kritische Methode für das Studium der römischen Quellen erarbeiten ist auch Gradenwitz zu nennen der – mit anderen deutschen Gelehrten – einer der Lehrer Riccobonos werden sollte. Die frühen Arbeiten Riccobonos der sich in der neuen Deutschland beherrschenden historisch-kritischen Richtung wiederfand bediente sich der bei den deutschen Lehrern erworbenen Methoden. In dieser Linie beginnt freilich die Erarbeitung einer differenzierteren Methode die zwischen formalen und sachlichen Interpolationen unterscheidet und Schritt für Schritt weitere Instrumente nutzbar macht. Mit dem Ausbruch des Ersten Weltkriegs ist eine Wendung zu noch größerer Selbständigkeit gegenüber den methodischen Modellen aus Deutschland zu beobachten in der mit der Zeit auch nationalistisch geprägte Momente Gewicht erlangt zu haben scheinen. Eine Untersuchung der späteren Arbeiten Riccobonos zeigt wie die neue Methode sich perfekt zu seinen politischen Aktivitäten fügt. In dieser Linie vertritt Riccobono eine ununterbrochene Entwicklung des römischen Rechts von der Republik bis zu den modernen Gesetzbüchern. Als der Faschismus sich die nationalistischen Anliegen zu eigen macht und Riccobono sich ohne Zögern an Aktivitäten des Regimes beteiligt stehen seine methodologischen Positionen bereits in Verbindung mit der Herausstellung eines kaiserlichen Rom das – über italienische Glossatoren und Kommentatoren – der Moderne ein substantiell nicht von außerrömischen Elementen getrübtes juristisches Erbe hinterlassen hat.Settore IUS/18 - Diritto Romano E Diritti Dell'Antichita'
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Nitrous oxide from integrated fixed-film activated sludge membrane bioreactor: Assessing the influence of operational variables

2017

The influence of the main operational variables on N2O emissions from an Integrated Fixed Film Activated Sludge University of Cape Town membrane Bioreactor pilot plant was studied. Nine operational cycles (total duration: 340 days) were investigated by varying the value of the mixed liquor sludge retention time (SRT) (Cycles 1–3), the feeding ratio between carbon and nitrogen (C/N) (Cycles 4–6) and simultaneously the hydraulic retention time (HRT) and the SRT (Cycles 7–9). Results show a huge variability of the N2O concentration in liquid and off-gas samples (ranged from 10−1μg N2O-N L−1to 103μg N2O-N L−1). The maximum N2O concentration (1228 μg N2O-N L−1) in the off-gas sa…

Environmental EngineeringDenitrificationHydraulic retention timeHRT0208 environmental biotechnologySRTchemistry.chemical_elementUCT-IFAS-MBRBioengineering02 engineering and technology010501 environmental sciencesMembrane bioreactorWaste Disposal Fluid01 natural sciencesBioreactorsBioreactorWaste Management and Disposal0105 earth and related environmental sciencesNitrous oxideSewageSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleRenewable Energy Sustainability and the EnvironmentChemistryEnvironmental engineeringGeneral MedicinePulp and paper industryAnoxic watersNitrogen020801 environmental engineeringActivated sludgeDenitrificationAerationC/NBioresource Technology
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Valutazione della riduzione della distensibilità delle vie aeree in relazione alla gravità del quadro di broncopneumopatia cronica ostruttiva mediant…

2008

HRTC BPCO bronchiSettore MED/10 - Malattie Dell'Apparato Respiratorio
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Photochemical Synthesis of Water-Soluble Gold Nanorods: The Role of Silver Ions in Assisting Anisotropic Growth

2009

The role of Ag+ ions in the ultraviolet-driven photochemical synthesis of Au nanorods (NRs) in aqueous surfactant mixtures has been investigated in order to elucidate the mechanism that drives anisotropic nanoparticle growth. The samples, grown in the presence of varying amounts of Ag+ ions for scheduled irradiation times, have been characterized by ultraviolet−visible−near infrared (UV−vis−NIR) absorption spectroscopy, analytical transmission electron microscopy (ATEM), inductively coupled plasma atomic emission spectroscopy (ICP-AES), and extended X-ray absorption fine structure (EXAFS) measurements. Moreover, the time evolution of size and shape distribution has been investigated by stat…

HRTEMAbsorption spectroscopyGeneral Chemical EngineeringsurfactantAnalytical chemistryNanoparticlePhotochemistryAu-nanorodtransmission electron microscopyphotochemical synthesiMaterials ChemistrysilverX-ray absorption spectroscopyAqueous solutionExtended X-ray absorption fine structureChemistrynanoparticleX-ray absorption spectroscopyGeneral ChemistrygoldnanorodChemical stateEXAFSAu-nanoparticleInductively coupled plasma atomic emission spectroscopyNanorod
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Synthetic individual binaural audio delivery by pinna image processing

2014

Purpose – The purpose of this paper is to present a system for customized binaural audio delivery based on the extraction of relevant features from a 2-D representation of the listener’s pinna. Design/methodology/approach – The most significant pinna contours are extracted by means of multi-flash imaging, and they provide values for the parameters of a structural head-related transfer function (HRTF) model. The HRTF model spatializes a given sound file according to the listener’s head orientation, tracked by sensor-equipped headphones, with respect to the virtual sound source. Findings – A preliminary localization test shows that the model is able to statically render the elevation of a vi…

Headphonebusiness.product_categoryReferenceGeneral Computer ScienceComputer scienceBinauralSpeech recognitionAuditory localizationImage processingTransfer functionTheoretical Computer Science3D audio; human computer interactionPsychoacousticsRepresentation (mathematics)Headphonesbiology3D audio; human computer interaction; Auditory localization; Binaural; Headphones; HRTF; Pinna; References; Spatial soundSpatial soundSettore INF/01 - InformaticaOrientation (computer vision)PinnaComputer Science (all)3D audio; Auditory localization; Binaural; Headphones; HRTF; Pinna; References; Spatial soundReferencesbiology.organism_classification3D audioHRTFhuman computer interactionPinnabusinessBinaural recordingHeadphones
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