Search results for "Lytic"

showing 10 items of 11146 documents

Adsorption and Activation of Water on Cuboctahedral Rhodium and Platinum Nanoparticles

2017

Rh and Pt are widely used as the components in heterogeneous catalysts for multiple industrial applications. Because the metals are typically in the form of nanoparticles in real catalysts, it is important to carefully select models for the computational prediction of the catalytic properties. Here we report a first-principles study on the water activation, an important step in numerous catalytic reactions, using the finite-size Rh and Pt nanoparticle models and compare them to the extended surface models. We show that regardless of the model, adsorption and activation of water is practically identical for both metals, whereas the dissociation is energetically more favorable on Rh. The expe…

ta221Inorganic chemistryOxidemetalsNanoparticlechemistry.chemical_element02 engineering and technology010402 general chemistryPlatinum nanoparticles01 natural sciencesDissociation (chemistry)catalytic reactionsRhodiumCatalysisMetalchemistry.chemical_compoundAdsorptionplatinummetal nanoparticlesmetallitPhysical and Theoretical Chemistrywater activationta116ta114Chemistry021001 nanoscience & nanotechnologycatalytic properties0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsGeneral Energyadsorptionkatalyysivisual_artvisual_art.visual_art_mediumnanoparticlesnanohiukkasetadsorptio0210 nano-technologyThe Journal of Physical Chemistry C
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A Cluster Analysis Approach to Profile Men and Women’s Volley Positions in Professional Tennis Matches (Doubles)

2021

(1) Background: Tennis ball tracking technology allows the aquirement of novel and reliable data about several performance indicators, such as volley positions. This information is key to understand match dynamics in doubles tennis and to better help preparing players for the demands they will face in match play. As such, the purpose of this study was to describe and compare the different types of volley positions in men’s and women’s doubles professional tennis. (2) Methods: Ball tracking data were collected for 46 women (Billie Jean King Cup) and 96 men’s doubles matches (Davis Cup). The variables used were the distance to the net, the distance to the centre of the court and the height of…

tacticsGeography Planning and DevelopmentTJ807-830match analysisManagement Monitoring Policy and LawTD194-19501 natural sciencesRenewable energy sources010104 statistics & probability03 medical and health sciences0302 clinical medicineStatisticsanalyticsGE1-3500101 mathematicsEnvironmental effects of industries and plantsRenewable Energy Sustainability and the Environment030229 sport sciencesBall trackingEnvironmental sciencesMatch analysisMatch playTennis ballRacquet SportsTracking (education)racquet sportsPsychologySustainability
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Effect of oil lamination between plasticized starch layers on film properties

2016

International audience; To reduce the hygroscopic character of biodegradable starch-based films, rapeseed oil was incorporated by lamination (starch-oil-starch 3-layers technique). The lipid lamination followed by starch solution casting step induced an emulsion type structure of dried films. Composite films are more opalescent and glossier than fatty free starch films. For all the films, structure is heterogeneous in the cross-section only. Adding fat induced a twice decrease of the tensile strength. Thermal gravimetry analysis did not show differences between films with and without oil. Lipid reduced the moisture absorption particularly at higher RH as well as the surface swelling index, …

tensileMaterials scienceWater-vapor barrierStarchSurface PropertiesMechanical-propertiesPermeabilityAnalytical Chemistrylaw.inventionContact angleFatty Acids Monounsaturatedchemistry.chemical_compoundOxygen permeability0404 agricultural biotechnologylawPlasticizersCoatingsPolymer chemistryLaminationUltimate tensile strength[SDV.IDA]Life Sciences [q-bio]/Food engineeringmedicinePlant OilsRapeseed oilBehaviorEnergyProteinWheat starchPlasticizer[ SDV.IDA ] Life Sciences [q-bio]/Food engineeringWaterStructureStarch04 agricultural and veterinary sciencesGeneral Medicine040401 food scienceEdible filmsSurfacechemistryChemical engineeringEmulsionInterfacial energyEmulsionsSwellingmedicine.symptomPermeabilitiesFood Science
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Understanding the White-Emitting CaMoO4 Co-Doped Eu3+, Tb3+, and Tm3+ Phosphor through Experiment and Computation

2019

In this article, the synthesis by means of the spray pyrolysis method, of the CaMoO4 and rare-earth cation (RE3+)-doped CaMoO4:xRE3+ (RE3+ = Eu3+, Tb3+, and Tm3+; and x = 1, 2, and 4% mol) compounds, is presented. The as-synthesized samples were characterized using X-ray diffraction, Rietveld refinement, field emission scanning electron microscopy (FE-SEM), Raman spectroscopy, and photoluminescence (PL) spectroscopy. To complement and rationalize the experimental results, first-principles calculations, at the density functional theory level, have been performed to analyze the band structure and density of states. In addition, a theoretical method based on the calculations of surface energie…

terbium compoundsMaterials scienceTm3+lightingAnalytical chemistryfield emission microscopes02 engineering and technology010402 general chemistry01 natural sciencesSpray pyrolysiseuropium compoundsTb3+White-Emitting CaMoO4Physical and Theoretical Chemistrydensity functional theorycalcium compoundscomputation theoryenamelsPhosphor021001 nanoscience & nanotechnologyred phosphorselectronic structureCo-Doped Eu3+0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsESTRUTURA ELETRÔNICAGeneral Energyphotoluminescence spectroscopylight emissionphosphors0210 nano-technologyspray pyrolysisCo dopedscanning electron microscopy
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Chemical composition of the essential oil of Elaeoselinum asclepium (L.) Bertol subsp. meoides (Desf.) Fiori (Umbelliferae) collected wild in Central…

2020

In the present study, the chemical composition of the essential oils from flowers and leaves of Elaeoselinum asclepium(L.) Bertol subsp. meoides(Desf.) Fiori collected in Central Sicily was evaluated by GC and GC-MS. The main volatile components of the flowers were alpha-phellandrene (42.5%), terpinolene (15.7%), p-cymene (11.6%) and beta-phellandrene (10.2%), whereas the ones of the leaves were p-cymene (44.0%), alpha-pinene (13.2%), alpha-phellandrene (11.0%), beta-phellandrene (10.2%) and beta-pinene (9.2%). Furthermore, the antibacterial and antifungal activities against some microorganisms infesting historical art craft were determined. The essential oil from leaves (EL) showed to be p…

terpinoleneApiaceaep-CymenebiologyOrganic ChemistryElaeoselinum asclepiumPlant ScienceElaeoselinum asclepium subsp. meoidesbiology.organism_classificationAntimicrobialBiochemistryantibacterial and antifungal activityAnalytical Chemistrylaw.inventionElaeoselinum asclepium subsp. meoideschemistry.chemical_compoundp-cymenechemistrylawvolatile componentsα-phellandreneBotanyChemical compositionEssential oilApiaceaeNatural Product Research
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Densities, Refractive Indices, and Derived Excess Properties of the Binary Systems Toluene + Isooctane and Methylcyclohexane + Isooctane and the Tern…

2000

This paper reports mesurements of the densities and refractive indices of the binary systems toluene + isooctane and methylcyclohexane + isooctane and the ternary systems tert-butyl alcohol (TBA) + toluene + isooctane and tert-butyl alcohol (TBA) + methylcyclohexane + isooctane over the entire range of composition at 298.15 K. Excess molar volumes and changes of refractive indices were evaluated from the experimental data obtained. These derived properties were fitted to variable-degree polynomials. The experimental values of physical properties were compared with the values estimated by different methods.

tert-Butyl alcoholTernary numeral systemGeneral Chemical EngineeringButanolAnalytical chemistryAlcoholGeneral ChemistryToluenechemistry.chemical_compoundMolar volumechemistryOrganic chemistryBinary systemMethylcyclohexaneJournal of Chemical & Engineering Data
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Il primo concorso per il Palazzo di Giustizia a Roma del 1884. Ricostruzione critica del progetto di Ernesto Basile

2019

1. Breve descrizione dell’oggetto di studio Il concorso del Palazzo di Giustizia di Roma si svolge in quattro fasi svolte tra il 1884 e il 1887. Il progetto per il primo concorso, del 1884, redatto dall’allora giovanissimo Ernesto Basile (Palermo 1857-1932), rivela una grande perizia progettuale che trasforma il complesso programma funzionale in un austero edificio in stile neofiorentino. I disegni originari dell’opera, non realizzata, conservati presso la Dotazione Basile del Dipartimento di Architettura dell’Università di Palermo, sono stati oggetto di studio propedeutico alle fasi di analisi, interpretazione e ricostruzione congetturale del modello digitale. 2. Stato dell’arte e riferime…

the spatiality of the great vestibule• elaboration of axonometric and perspective view• choice of interpretation criteria in case of project incongruitiethe vaulted arcades.the space of the main courtyard which Basile outlines in a sketch• elaboration of analytical drawings (modular functional compositional volumetric schemes)• modular study and flat vectorization• application of rendering techniques consistent with the available information. 4. Objectives pursued and achieved Conjectural reconstruction achieved the following results: • formulation of analytical documents which show how the planimetric and altimetric articulation are perfectly consistent with the functional program• definition of the level of uncertainty1. Brief description of the object of study The competition of the Palace of Justice in Rome takes place in four phases between 1884 and 1887. The project for the first competition in 1884 drawn up by the then very young Ernesto Basile (Palermo 1857-1932) reveals a great deal of design expertise that transforms the complex functional program into an austere building in neo-florentine style. The original drawings of the building not realized kept in the Basile Endowment of the Department of Architecture of the University of Palermo have been the subject of preliminary study to the phases of analysis interpretation and conceptual reconstruction of the digital model. 2. State of the art and main bibliographical references The conjectural reconstruction on the basis of drawings and archival documents is a well-established and codified practice thanks to various disciplinary contributions at national and international level. See: F. I. Apollonio Classification Schemes for Visualization of Uncertainty in Digital Hypothetical Reconstruction in M. Sander P. Mieke P. Kuroczyński M. Ioannides 3D Research Challenges in Cultural Heritage II Cham (CH) 2016. G. Antista M. Cannella Ricostruire. Architettura - Storia – Rappresentazione Palermo 2015. For studies related to the examinated project see: E. Mauro E. Sessa I disegni della Collezione Basile Roma 2015. E. Sessa Ernesto Basile. Dall'eclettismo Classicista al Modernismo Palermo 2002. 3. Definition of the methodologies adopted in the research Methodological phases: • historical analysi• survey of the original drawings and dimensional verification of the flat scanSettore ICAR/17 - Disegno• construction of perspective views deduced from the original drawings that highlight: the volumetric hierarchy and the function of the bugnate in the scanning of the masonry ma• three-dimensional modeling
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Effect of thermal annealing on the luminescence of defective ZnO nanoparticles synthesized by pulsed laser ablation in water

2016

This work concerns ZnO nanoparticles (NPs), with sizes of tens of nm, produced by ablation with a pulsed Nd:YAG laser of a Zn plate in H2O. TEM images evidence the formation of nanoparticles with sizes of tens of nm. Moreover, HRTEM images and Raman spectra show that the distance between the crystalline planes and the vibrational modes are consistent with ZnO nanocrystal in wurtzite structure. Their optical properties are characterized by two emission bands both excited above the energy gap (3.4 eV): the first at 3.3 eV is associated with excitons recombination, the second at 2.2 eV is proposed to originate from a singly ionized oxygen vacancy. The green emission is independent of water pH,…

thermal annealingMaterials scienceLaser ablationPhotoluminescenceZnO nanoparticleBand gapAnalytical chemistryNanotechnology02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciences0104 chemical sciencessymbols.namesakeNanocrystalsymbolslaser ablationoxygen vacanciephotoluminescence0210 nano-technologyHigh-resolution transmission electron microscopyRaman spectroscopyLuminescenceWurtzite crystal structure
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High Frequency Data Acquisition System for Modelling the Impact of Visitors on the Thermo-Hygrometric Conditions of Archaeological Sites: A Casa di D…

2018

[EN] The characterization of the microclimatic conditions is fundamental for the preventive conservation of archaeological sites. In this context, the identification of the factors that influence the thermo-hygrometric equilibrium is key to determine the causes of cultural heritage deterioration. In this work, a characterization of the thermo-hygrometric conditions of Casa di Diana (Ostia Antica, Italy) is carried out analyzing the data of temperature and relative humidity recorded by a system of sensors with high monitoring frequency. Sensors are installed in parallel, calibrated and synchronized with a microcontroller. A data set of 793,620 data, arranged in a matrix with 66,135 rows and …

thermo-hygrometric balanceFrequency dataContext (language use)010501 environmental scienceslcsh:Chemical technologyLogistic regressionrelative humidity01 natural sciencesBiochemistryArticleAnalytical ChemistryThermo-hygrometric balanceContinuous monitoringVisitorsvisitors; temperature; relative humidity; thermo-hygrometric balance; continuous monitoring; preventive conservationlcsh:TP1-1185Relative humidityElectrical and Electronic EngineeringInstrumentation0105 earth and related environmental sciencesEnvironmental humidity010401 analytical chemistryContinuous monitoringTemperatureClimatic variablestemperatureRelative humiditypreventive conservationvisitorsArchaeologyAtomic and Molecular Physics and Opticscontinuous monitoring0104 chemical sciencesFISICA APLICADAEnvironmental scienceThermal balancePreventive conservation
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Interactive Tools for the Preservation, Dissemination and Study of Silk Heritage—An Introduction to the SILKNOW Project

2018

Silk was a major factor for progress in Europe, mostly along the Western Silk Road’s network of production and market centers. The silk trade also allowed for the exchange of ideas and innovations, having impacts at economic, technical, functional, cultural and symbolic levels. However, silk has today become a seriously endangered heritage. Although many European specialized museums are devoted to its preservation, they usually lack the size and resources to take advantage of state-of-the-art digital technologies. The aim of this paper is twofold; firstly, we introduce SILKNOW, an interdisciplinary project that has been recently funded by the H2020 Programme of the European Union in order t…

thesaurusArchitectural engineeringComputer Networks and CommunicationsNeuroscience (miscellaneous)silk heritage02 engineering and technologyinteractive toolslcsh:Technology01 natural sciencesOrder (exchange)0202 electrical engineering electronic engineering information engineeringmedia_common.cataloged_instanceEuropean unionlcsh:SciencePatrimoni culturalmedia_commonlcsh:T010401 analytical chemistry020207 software engineering0104 chemical sciencesComputer Science ApplicationsHuman-Computer InteractionSILKvirtuallcsh:QBusinessMultimodal Technologies and Interaction
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