Search results for "Porte"

showing 10 items of 1894 documents

Catalytic applications of TiO2

2021

Abstract The use of TiO2 as heterogeneous catalyst and/or active support for metals or other oxides is here reported. Many reactions of industrial relevance involve, in fact, titania-based catalysts, among them, NOx abatement, Fischer–Tropsch and water–gas shift, Deacon and Claus processes, hydrodesulfurizations and hydrogenations, selective reductions and selective oxidations. This chapter aims to discuss the main applications of TiO2, in its different forms, as effective support or catalyst for thermocatalytic and photo-thermocatalytic reactions, focusing on the role of its structural and physicochemical properties on the catalytic performance (activity, selectivity, stability).

supported metalsTitaniaChemistryselective catalytic reductionHeterogeneous catalysisCombinatorial chemistryCatalysisCatalysisstrong metal and support interactionMetal oxidesSettore CHIM/07 - Fondamenti Chimici Delle TecnologieSelectivityActive supportNOx
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Silica powder obtained by sol-gel method as a support of organometallic vanadium catalyst for ethylene polymerization

2004

Sol-gel technique was employed to obtain the silica-type powder, which after modification procedure was applied as asupport of organometallic catalytic system for ethylene polymerization. The powder product was synthesized using hydrolysis and condensation of TEOS, catalyzed by ammonia. Obtained material and a reference support (commercial silica Davisil) were characterized to determine their particle size distributions, BET surface area, pore volume and diameter. Gas-phase adsorption of vanadium catalyst on analyzed support materials as well as adsorption from the solution in hexane were carried out. Both carrier materials were thermally pretreated prior catalytic systems syntheses and the…

supported vanadium catalystsol-gel techniquesilica supportsupport porous structureethylene polymerizationPolimery
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Determination of glyphosate and its metabolite aminomethylphosphonic acid in fruit juices using supported-liquid membrane preconcentration method wit…

2005

Abstract The application of supported-liquid membrane (SLM) technique for effective extraction of N -(phosphonomethyl)glycine (glyphosate) and its primary metabolite aminomethylphosphonic acid (AMPA) from juices (orange, grapefruit, apple and blackcurrant) in combination with HPLC-UV detection after derivatization with p -toluenesulphonyl chloride (TsCl) is presented. The influence of various parameters such as the composition of acceptor phase, flow-rate, concentration of analytes, on the performance of extraction procedure, was studied. It was shown that by appropriate manipulation of SLM parameters the level of detection could be significantly improved. The influence of SLM conditions on…

supported-liquid membrane extractionMetaboliteGlycineOrganophosphonatesTetrazolesaminomethylphosphonic acidfruit juiceBiochemistryHigh-performance liquid chromatographyChlorideAnalytical ChemistryBeveragesTosyl Compoundschemistry.chemical_compoundglyphosatemedicineSample preparationAminomethylphosphonic acidDerivatizationChromatography High Pressure LiquidChromatographyOrganic ChemistryPrimary metaboliteMembranes ArtificialIsoxazolespesticidesGeneral MedicinechemistryFruitGlyphosateCalibrationSpectrophotometry UltravioletHPLCmedicine.drugJournal of Chromatography A
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Nutrition et protection de la vigne par la symbiose mycorhizienne à arbuscule

2021

National audience; La vigne, comme la majorité des espèces de plante d’intérêt agronomique, forme une symbiosemutualiste avec les Champignons Mycorhiziens à Arbuscules (CMA). En contrepartie deproduits issus de la photosynthèse, les CMA soutiennent leur(s) plante(s) hôte(s) dansl’acquisition de nutriments et la lutte contre leur(s) pathogène(s). En tant que biofertilisants, cessymbiontes obligatoires représentent une alternative de choix à l’égard des pratiques agricolesconventionnelles pour le développement d’une agriculture, et notamment d’une viticulturedurable. Les échanges entre les deux partenaires sont permis par la mise en place de structuresfongiques spécialisées appelées arbuscule…

symbiose mycorhizienne[SDE] Environmental Sciencesmicroscopie[SDE]Environmental Sciencesvignetransparisationtransporteurs
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From “Strategic Fit” to Synergy Evaluation in M&A Deals

2012

The aim of this paper is to grasp the processes underlying the genesis and assessment of synergies in M&A deals. We proceed to an in-depth scrutiny of the foundations of synergies using Porter’s model of the value chain. A discernment of the nature of synergies and the mode of their emergence is helpful to clarify to what extent and under which boundary conditions it is appropriate to apply the DCF or the real option techniques for evaluating each type of synergy. Combining both financial tools, the methodology suggested for evaluating the synergies is able to: evaluate projects of M&As, orient the selection of target firms and the definition of the premium of acquisition, and drive…

synergy M&ampmerger; acquisition; synergy; Porter’s value chain; evaluationevaluationA evaluation methodmerger; acquisition; synergy; Porter’s value chain; evaluation;acquisitionsynergySettore SECS-P/08 - Economia e Gestione delle ImpresePorter’s value chainmerger
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Six points à retenir sur les déterminants de la "juste" portion [expertise pour Nestlé]

2021

Membres du comité d'experts ayant participé à la réflexion :Sandrine Monnery-Patris ; Pascale Hebel ; Ghislain Grodard ; Thibaut de Saint Pol et Marie-Josèphe Amiot-Carlin Référence interne : EAPP; Nestlé a initié une réflexion avec un comité d'experts pluridisciplinaires indépendants pour identifier et comprendre les déterminants de la portion, levier essentiel, mais complexe, pour réguler la prise alimentaire.La synthèse de leurs réflexions s’articule en 6 points clés, soutenus par une analyse de la littérature scientifique, qui sont : • Une portion ni normée, ni injonctive• Une portion réaliste• Une portion personnalisée• Une portion associée à l’hédonisme• Une portion qui intègre les as…

taille de portionhédonismealimentation[SDV.AEN] Life Sciences [q-bio]/Food and Nutritionsociologiesignaux internesChoix alimentairefaimComportement du consommateurrassasiement[SDV.AEN]Life Sciences [q-bio]/Food and Nutrition
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Engineering new tools for automated fabrication of molecular thin films and study of their electrical properties

2019

Resumen en castellano El propósito de esta tesis, titulada “Ingeniería de nuevas herramientas para la automatización. Fabricación de películas delgadas moleculares y Estudio de sus propiedades eléctricas”, es el desarrollo de algunas plataformas faltantes en el Instituto de Ciencia Molecular (ICMol) para llevar acabo el estudio de propiedades eléctricas de materiales moleculares e integrarlos en dispositivos electrónicos. Los objetivos específicos son: i) la nanoestructuración de materiales moleculares novedosos como los polipéptidos, las redes metal orgánicas bidimensionales (2D MOFs, two dimentional metal organic frameworks), polímeros de coordinación que presenten bi-estabilidad de espín…

tecnología de materialesUNESCO::FÍSICA::Electrónica ::Otras:FÍSICA::Electrónica ::Transporte de electrones [UNESCO]UNESCO::FÍSICA::Electrónica ::Transporte de electronestransporte de electrones:FÍSICA::Electrónica ::Otras [UNESCO]propiedades de materiales
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Análisis de la respuesta biomecánica, percepción del esfuerzo y confort en función del soporte plantar: termoconformable vs control durante un test d…

2020

En las últimas décadas se ha incrementado el número de corredores/as recreativos/as y competitivos/as en todo el mundo debido a los numerosos beneficios que conlleva la carrera a nivel físico, psicológico y social. Sin embargo, este incremento también ha supuesto en un aumento en la incidencia de lesiones en las extremidades inferiores. Entre las estrategias empleadas por los corredores/as para reducir la incidencia de lesiones durante la carrera está la utilización de soportes plantares. Además de los soportes prefabricados genéricos y los personalizados, surgen nuevos soportes como los termoconformables, los cuales pueden adaptarse a la ergonomía del pie calentándose por el propio usuario…

termoconformablepercepción confortfatigasoporte plantar:CIENCIAS TECNOLÓGICAS [UNESCO]impactos de aceleraciónUNESCO::FÍSICAbiomecánicapercepción esfuerzorecreativosUNESCO::CIENCIAS TECNOLÓGICAStermografía:CIENCIAS MÉDICAS [UNESCO]carreraplantilla:FÍSICA [UNESCO]presión plantarUNESCO::CIENCIAS MÉDICAS
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Psicothema

2014

Resumen tomado de la publicación Características psicométricas de la versión española del Cuestionario sobre la Práctica en Imaginación en el Deporte. Antecedentes: la presente investigación describe las características psicométricas de la versión española del cuestionario sobre la práctica en imaginación en el deporte que evalúa funciones cognitivas y motivacionales del uso de la imaginación. Método: el estudio se realizó en una muestra de 361 deportistas (234 hombres y 127 mujeres) con una media de edad de 24.29 ± 7.76 años. Los deportistas competían en 31 modalidades a nivel regional, nacional o internacional. Resultados: un análisis confirmatorio inicial representando un modelo de cinco…

test cognitivovalidezimaginaciónpsicometríadeportelengua española
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E-Sports y brecha de género: la percepción de las profesionales españolas

2019

The present paper aims to identify the causes of under-representation of women in E-sports. According to a genre perspective, interest in videogames at the amateur level is quite similar. However, in its professional level, female participation becomes very limited. The fact that physical effort is irrelevant (a requirement for ?traditional sports?) could be considered a variable that would negatively affect greater to equality in the conditions of access and participation of women in electronic sports. Against any predictions, the data on the presence of women are elocuent: few women, with much lower wages than men to remunerate same skills, and a general complaint by the female profession…

the data on the presence of women are elocuent: few womenhas been focused on the technique of content analysis from a netnographic perspective. It has been spotlighted by the analysis of the testimonies made at the ?Womenfemale participation becomes very limited. The fact that physical effort is irrelevant (a requirement for ?traditional sports?) could be considered a variable that would negatively affect greater to equality in the conditions of access and participation of women in electronic sports. Against any predictionsorganized by the Movistar´s Riders club. In addition to content analysisVideojuegoRocío The present paper aims to identify the causes of under-representation of women in E-sports. According to a genre perspectiveE-sports and Unicorns? Conferenceinterest in videogames at the amateur level is quite similar. HoweverUNESCO::SOCIOLOGÍAfew women [the data on the presence of women are elocuent]in its professional leveldesigualdad de génerowith much lower wages than men to remunerate same skillsand a general complaint by the female professionals of frequent situations of ?suffocating pressure? during competitions. The methodologygender inequality 139 148La percepción de las profesionales españolas Moldes Farelo [1137-7038 8537 Arxius de sociologia 525290 2019 40 7038148 E-sports y brecha de género]1137-7038 8537 Arxius de sociologia 525290 2019 40 7038148 E-sports y brecha de género: La percepción de las profesionales españolas Moldes Farelothree in-depth interviews have been conducted industria videojuegosE-sportsVideo game industrysporting eventsMujeres:SOCIOLOGÍA [UNESCO]within the framework of the campaign ? MynameMygamedeporte espectáculoSociología del deporteEmpleo de las mujeresSociologíawith a qualitative nature
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