Search results for "78"

showing 10 items of 1163 documents

Bone-Healing Pattern on the Surface of Titanium Implants at Cortical and Marrow Compartments in Two Topographic Sites: an Experimental Study in Rabbi…

2018

This study evaluates the bone-healing patterns on the surface of titanium implants at the cortical and marrow compartments of bicortically-installed implants in the diaphysis and metaphysis of rabbit tibiae. In 27 New Zealand rabbits, two implants, one for each macro-design and with equal resorbable blasted media (RBM) implant surfaces, were randomly implanted in the diaphysis or metaphysis of each tibia. The flaps were sutured to allow submerged healing. The animals were sacrificed after two, four, or eight weeks, with nine weeks used for the period of healing. Ground sections were prepared and analyzed. No statistically significant differences were found between the two groups for newly f…

implant macro-designmedicine.medical_treatment02 engineering and technologyBone healingMetaphysislcsh:TechnologyArticleOsseointegration03 medical and health sciences0302 clinical medicinemedicineGeneral Materials ScienceTibiaDental implantlcsh:Microscopylcsh:QC120-168.85dental implantlcsh:QH201-278.5Chemistrylcsh:Tosseointegration030206 dentistryAnatomy021001 nanoscience & nanotechnologyanimal studyDiaphysisAppositionmedicine.anatomical_structurelcsh:TA1-2040bicortical stabilizationlcsh:Descriptive and experimental mechanicsImplantlcsh:Electrical engineering. Electronics. Nuclear engineering0210 nano-technologylcsh:Engineering (General). Civil engineering (General)lcsh:TK1-9971Materials
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La tipografía en la Plantificación de la imprenta? de Antonio Bordazar y en De numis hebraeosamaritanis, impreso por Benito Monfort: dos paradigmas d…

2018

impreso por Benito Monfort: dos paradigmas del libro valenciano del siglo XVIII CarrereUNESCO::CIENCIAS DE LAS ARTES Y LAS LETRAS:CIENCIAS DE LAS ARTES Y LAS LETRAS [UNESCO]Alberto 121 1320211-5808 9678 Archivo de arte valenciano 513825 2018 99 6869546 La tipografía en la Plantificación de la imprenta? de Antonio Bordazar y en De numis hebraeosamaritanisdos paradigmas del libro valenciano del siglo XVIII Carrere [impreso por Benito Monfort]
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La evolución energética del sector español de baldosas cerámicas

2014

espanolEl presente texto analiza como ha ido evolucionando el consumo y la eficiencia energetica de la industria espanola de baldosas ceramicas durante el siglo XX, y explora las posibilidades que se le plantean en el siglo XXI. Durante el pasado siglo este sector industrial acometio tres transiciones radicales al pasar de los combustibles tradicionales de biomasa a los hidrocarburos liquidos (fueloleo y gasoleo), y posteriormente a los gaseosos, principalmente gas natural. Aunque la informacion que permite evaluar de manera fiable la eficiencia energetica real en las plantas de fabricacion no es facil de obtener, los datos disponibles indican que se ha llegado a una elevada eficiencia con …

industria cerámicaceramic industrybiomasseficiencia energéticaconsumo energéticoWelfare economicsEficiència industrialIndustrial and Manufacturing Engineeringlcsh:TP785-869biomasalcsh:Clay industries. Ceramics. GlassCarbon oxideMechanics of Materialsenergy consumptionPolitical scienceCeràmicaCeramics and Compositesemisiones de dióxido de carbonocarbon dioxide emissionsCeramic industryEnergy sourceenergy efficiency
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Efectos de las consultas boca a boca en redes sociales en la compra de cosméticos en Ecuador.

2022

Las redes sociales han reestructurado el paradigma de la comunicación en el marketing. Investigaciones recientes demuestran que la conducta de consultar reseñas está adquiriendo un rol fundamental en la decisión de compra de los consumidores. En este contexto, el presente estudio desarrolló un marco de investigación para determinar la cadena de relación entre influencia social, credibilidad percibida del boca a boca, adopción del boca a boca e intención de compra aplicada a la industria cosmética del Ecuador. A través de una muestra de 406 consumidores y la aplicación del método de análisis de ecuaciones estructurales, los resultados evidencian el vínculo existente entre las variables plant…

influencia socialadopción del eWOMStrategy and ManagementConsumidoresPublicidad boca a boca//vocabularies.unesco.org/thesaurus/concept1545 [http]IntentionCosmeticsMercadeo en Internet//id.loc.gov/authorities/subjects/sh85067189 [http]Social mediaSocial influencePreferencias de los consumidoresWord-of-mouth advertising//id.loc.gov/authorities/subjects/sh91001924 [http]AdvertisingManagement of Technology and InnovationConsumidor//vocabularies.unesco.org/thesaurus/concept5657 [http]Influencia socialMarketingCosmeticosintención de compraM31 MarketingConsumer behaviourCredibilidad percibida del eWOMComercio electrónico//id.loc.gov/authorities/subjects/sh85033139 [http]eWOM en redes socialesAdopción del eWOMIntenciónIntención de compraPersuasion (Psychology)//id.loc.gov/authorities/subjects/sh96008434 [http]Internet marketingRelaciones socialesInternet personalitiesEconomics and EconometricsPersuasión (Psicología)Medios socialesElectronic commerceComportamiento del consumidorOnline social networks in businessPublicidad//vocabularies.unesco.org/thesaurus/concept6377 [http]//vocabularies.unesco.org/thesaurus/concept1532 [http]ShoppingRedes de informaciónMercadeo//id.loc.gov/authorities/subjects/sh87006429 [http]Information networksComercializaciónBusiness and International ManagementCompraCompras//id.loc.gov/authorities/subjects/sh85100175 [http]Redes sociales en línea en los negociosCosméticos//id.loc.gov/authorities/subjects/sh85121778 [http]//id.loc.gov/authorities/subjects/sh2015001935 [http]//vocabularies.unesco.org/thesaurus/concept12431 [http]UNESCO::CIENCIAS ECONÓMICAS//id.loc.gov/authorities/subjects/sh95005028 [http]//vocabularies.unesco.org/thesaurus/concept17089 [http]Consumer behavior//id.loc.gov/authorities/subjects/sh2015001634 [http]Purchasingcredibilidad percibida del eWOMConsumers' preferences//id.loc.gov/authorities/subjects/sh85031496 [http]Social relationshipsConsumersInfluenciadoresFinance//id.loc.gov/authorities/subjects/sh94006574 [http]
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The technological evolution of the Castellón ceramic tile district: the contribution of the frit, glaze and colour industry

2008

[EN]: The industrial district of Castellón is characterized by a great dynamism based on technological innovation, both product and process, the origins of which are to be found on its providers, the machinery industry and the frit, glaze and colours industry. In this paper the current situation of the frit, glaze and colour industry is analyzed, accounting also for the situation of its main European competitor in Italy. The formation and development of the industry is also described in relation to the industrial district and the innovation system where it belongs, together with the R&D activity, the innovation activity, and the main technological milestones that have made it become the wor…

innovation systemInnovation systemCerámicadistrito industrialGlazesDistrito industrialindustrial districtTechnological innovationIndustrial and Manufacturing Engineeringglazeslcsh:TP785-869Art i indústriaCeramic tileslcsh:Clay industries. Ceramics. Glasstechnological innovationMechanics of Materialsinnovación tecnológicaIndustrial districtCeràmicaCeramics and CompositesEsmaltesInnovación tecnológicasistema de innovaciónSistema de innovaciónesmaltesBoletín de la Sociedad Española de Cerámica y Vidrio
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Easy Method for the Transformation of Levulinic Acid into Gamma-Valerolactone Using a Nickel Catalyst Derived from Nanocasted Nickel Oxide

2019

Different nickel catalysts have been tested for the transformation of levulinic acid into &gamma

inorganic chemicalsMaterials scienceHydrogenValerolactonechemistry.chemical_element02 engineering and technology010402 general chemistrylcsh:Technology01 natural sciencesArticleHydrothermal circulationCatalysischemistry.chemical_compoundLevulinic acidNickelotorhinolaryngologic diseasesLevulinic acidheterocyclic compoundsGeneral Materials ScienceNanocastinglcsh:Microscopylcsh:QC120-168.85lcsh:QH201-278.5lcsh:Torganic chemicalsNickel oxideNon-blocking I/O021001 nanoscience & nanotechnology0104 chemical sciencesgamma-ValerolactoneNickelHydrothermal reactionChemical engineeringchemistrylcsh:TA1-2040lcsh:Descriptive and experimental mechanicslcsh:Electrical engineering. Electronics. Nuclear engineeringHigh temperature waterlcsh:Engineering (General). Civil engineering (General)0210 nano-technologylcsh:TK1-9971Materials
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Highly Active Co3O4-Based Catalysts for Total Oxidation of Light C1–C3 Alkanes Prepared by a Simple Soft Chemistry Method: Effect of the Heat-T…

2021

9 figures, 2 tables.

inorganic chemicalsTechnologyInorganic chemistryTotal oxidationcobalt oxidechemistry.chemical_elementalkane oxidationpropaneHeterogeneous catalysissurface oxygen vacanciesMethaneArticleCatalysischemistry.chemical_compoundPropaneAlkane oxidationSurface oxygen vacanciesPropanetotal oxidationvolatile organic compoundsGeneral Materials ScienceReactivity (chemistry)Volatile organic compoundsCobalt oxideAlkanechemistry.chemical_classificationHeterogeneous catalysisEthaneMicroscopyQC120-168.85methaneTQH201-278.5ethaneEngineering (General). Civil engineering (General)TK1-9971heterogeneous catalysischemistryDescriptive and experimental mechanicsMixed oxideElectrical engineering. Electronics. Nuclear engineeringTA1-2040cobalt oxide; total oxidation; alkane oxidation; heterogeneous catalysis; volatile organic compounds; propane; ethane; methane; surface oxygen vacanciesCobaltMethaneMaterials; Volume 14; Issue 23; Pages: 7120
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Eco-friendly cavity-containing iron oxides prepared by mild routes as very efficient catalysts for the total oxidation of VOCs

2018

Iron oxides (FeOx) are non-toxic, non-expensive and environmentally friendly compounds, which makes them good candidates for many industrial applications, among them catalysis. In the present article five catalysts based on FeOx were synthesized by mild routes: hydrothermal in subcritical and supercritical conditions (Fe-HT, Few200, Few450) and solvothermal (Fe-ST1 and Fe-ST2). The catalytic activity of these catalysts was studied for the total oxidation of toluene using very demanding conditions with high space velocities and including water and CO2 in the feed. The samples were characterized by X-ray diffraction (XRD), scanning and high-resolution transmission electron microscopy (SEM and…

iron oxideMaterials scienceTotal oxidationIron oxide02 engineering and technologyMetalurgia010402 general chemistrylcsh:Technology01 natural sciencesMild preparation routesArticleHydrothermal circulationCatalysischemistry.chemical_compoundX-ray photoelectron spectroscopytotal oxidationVolatile organic compounds (VOC)Iron oxideGeneral Materials Sciencelcsh:MicroscopyPorosityHigh-resolution transmission electron microscopylcsh:QC120-168.85lcsh:QH201-278.5lcsh:Tcavities021001 nanoscience & nanotechnologyTolueneQuímica inorgánicavolatile organic compounds (VOC)Supercritical fluid0104 chemical scienceschemistryChemical engineeringlcsh:TA1-2040mild preparation routeslcsh:Descriptive and experimental mechanicslcsh:Electrical engineering. Electronics. Nuclear engineeringlcsh:Engineering (General). Civil engineering (General)0210 nano-technologylcsh:TK1-9971
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Design and Realization of a Bidirectional Full Bridge Converter with Improved Modulation Strategies

2020

In this paper a Full-Bridge Converter (FBC) for bidirectional power transfer is presented. The proposed FBC is an isolated DC-DC bidirectional converter, connected to a double voltage source&mdash

isolated DC-DC bidirectional converterComputer Networks and CommunicationsComputer science020209 energylcsh:TK7800-836002 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici7. Clean energySettore ING-INF/01 - Elettronicafull-bridge converterlaw.inventionFull bridge converterlaw0202 electrical engineering electronic engineering information engineeringElectronic engineeringMaximum power transfer theoremElectrical and Electronic EngineeringTransformerfull-bridge converter; isolated DC-DC bidirectional converter; phase shift modulation; supercapacitorssupercapacitors020208 electrical & electronic engineeringlcsh:Electronicsphase shift modulationHardware and ArchitectureControl and Systems EngineeringSignal ProcessingVoltageElectronics
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Conflict, Evolution, Hegemony, and the Power of the State

2013

In a model of evolution driven by conflict between societies more powerful states have an advantage. When the influence of outsiders is small we show that this results in a tendency to hegemony. In a simple example in which institutions differ in their “exclusiveness” we find that these hegemonies will be inefficiently “extractive” in the sense of having inefficiently high taxes, high compensation for state officials, and low welfare.

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