Now showing items 1-20 of 42

  • Aggregate expansivity due to sulfied oxidation - I. Reaction system and rate model 

    Casanova Hormaechea, Ignasi; Agulló Fité, Luís; Aguado de Cea, Antonio (Aggregate expansivity due to sulfied oxidation - I. Reaction system and rate model, 1996)
    Article
    Open Access
    Oxidation and hydration of sulfides in aggregate materials can yield to expansive reactions that affect the durability of concrete. This process is, in principle, independent from the potential alkali-aggregate reactivity, ...
  • Amorphous carbon modified nano-sized tungsten carbide as a gas diffusion electrode catalyst for the oxygen reduction reaction 

    Liu, Zhiwei; Li, Ping; Zhai, Fuqiang; Wan, Qi; Volinsky, Alex A.; Qu, Xuanhui (2015-01-01)
    Article
    Open Access
    Nanostructured tungsten carbide with high surface area and containing amorphous carbon is prepared by a low temperature combustion synthesis method. The nanostructured tungsten carbide is used as the catalyst in a gas ...
  • Aromatic stacking interactions govern catalysis in aryl-alcohol oxidase 

    Ferreira, Patricia; Hernández-Ortega, Aitor; Lucas, Fatima; Carro, Juan; Herguedas, Beatriz; Borrelli, Kenneth W.; Guallar, Víctor; Martínez, Angel T.; Medina, Milagros (FEBSPress, 2015-02-23)
    Article
    Open Access
    Aryl-alcohol oxidase (AAO, EC 1.1.3.7) generates H2O2 for lignin degradation at the expense of benzylic and other π system-containing primary alcohols, which are oxidized to the corresponding aldehydes. Ligand diffusion ...
  • Asymmetric sulfoxidation by engineering the heme pocket of a dye-decolorizing peroxidase 

    Linde, Dolores; Cañellas, Marina; Coscolín, Cristina; Davó-Siguero, Irene; Romero, Antonio; Lucas, Fátima; Ruiz-Dueñas, Francisco J.; Guallar, Víctor; Martínez, Ángel T. (Royal Society of Chemistry, 2016-05-23)
    Article
    Open Access
    The so-called dye-decolorizing peroxidases (DyPs) constitute a new family of proteins exhibiting remarkable stability. With the aim of providing them new catalytic activities of biotechnological interest, the heme pocket ...
  • Avocado seed: A comparative study of antioxidant content and capacity in protecting oil models from oxidation 

    Segovia Gómez, Francisco José; Hidalgo Lopez, Gádor-Indra; Villasante, Juliana; Ramis Juan, Xavier; Almajano Pablos, María Pilar (2018-09-21)
    Article
    Open Access
    Increasingly, consumers want products containing little or no synthetic compounds. Avocado seeds, which are a residue of the food industry, could be used to obtain extracts with high antioxidant power. In the present study, ...
  • Bioadsorció de Pb(II) mitjançant pell de taronja químicament modificada 

    Fortes Hernández, Sandra (Universitat Politècnica de Catalunya, 2016-05)
    Bachelor thesis
    Restricted access - author's decision
  • Comportament a alta temperatura d'aliatges de titani per aplicacions en el sector aeroespacial 

    Margalef Solé, Josep (Universitat Politècnica de Catalunya, 2017-10)
    Bachelor thesis
    Open Access
    En aquest treball s’estudien els fenòmens d’oxidació que tenen lloc en l’aliatge de titani Ti-6Al-4V quan és sotmet a tractaments tèrmics cíclics a elevades temperatures, per tal de simular condicions en servei que pot ...
  • Computer-aided laccase engineering: toward biological oxidation of arylamines 

    Santiago, Gerard; de Salas, Felipe; Lucas, Fatima; Monza, Emanuele; Acebes, Sandra; Martinez, Ángel T.; Camarero, Susana (ACS Publications, 2016-07-08)
    Article
    Open Access
    Oxidation of arylamines, such as aniline, is of high industrial interest and laccases have been proposed as biocata-lysts to replace harsh chemical oxidants. However, the reaction is hampered by the redox potential of the ...
  • Corn starch and gelatin-based films added with guabiroba pulp for application in food packaging 

    Malherbi, Naiane Miriam; Schmitz, Ana Camila; Grando, Remili Cristiani; Bilck, Ana Paula; Velasco Perero, José Ignacio (Elsevier Ltd, 2019-03-01)
    Article
    Restricted access - publisher's policy
    The guabiroba pulp (GP) has natural antioxidant compounds, such as phenolic compounds and ascorbic acid. The aim of this work was to produce an active biodegradable film based on blends of gelatin (GEL) and corn starch ...
  • Degradation and mineralization of Bisphenol A by the photo fenton process 

    Navarro Jordà, Marina; Graells Sobré, Moisès; Pérez Moya, Montserrat (2014)
    Conference lecture
    Open Access
    Bisphenol A (BPA; 2,2-bis (4-hydroxyphenyl) propane) is an industrial organic chemical basically used in the plastics industry as a monomer for producing epoxy resins and polycarbonates [1,2]. It is also a well-known endocrine ...
  • Effect of Neem (Azadirachta indica L.) on lipid oxidation in raw chilled beef patties 

    Ouerfelli, Manel; Villasante, Juliana; Ben Kâab, Leila Bettaieb; Almajano Pablos, María Pilar (2019-08-01)
    Article
    Open Access
    The aim of this study was to determine the total polyphenol content, radical scavenging and antimicrobial activities of Azadirachta indica (A. indica) and to evaluate their effect on shelf-life stability of raw beef patties ...
  • Eliminación del herbicida cianazina en agua mediante métodos de oxidación avanzada 

    Cairol Esteller, Albert (Universitat Politècnica de Catalunya, 2009-06-18)
    Master thesis (pre-Bologna period)
    Open Access
    Aquest projecte pretén contribuir a millorar la qualitat de l’aigua contaminada amb l’herbicida Cianazina que té una gran aplicació en l’agricultura actual. A l’actualitat hi ha un elevat número d’estudis que tracten de ...
  • Elucidating the chemical nature of laccase-modified alkyl gallates 

    Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (Universidade de Aveiro, 2018)
    Conference lecture
    Restricted access - publisher's policy
    In the present work we investigated the chemical changes undergone by enzyme-oxidized lauryl gallate (LG, dodecyl 3,4,5,-trihydroxybenzoate) by using Fourier transform infrared (FTIR) spectroscopy, and an oxidation mechanism ...
  • Entwicklung von Platin-MMC Elektrodenwerkstoffen für Zündkerzen 

    Yedra Cardona, Lluís (Universitat Politècnica de Catalunya / Universität Saarlandes, 2008)
    Master thesis (pre-Bologna period)
    Restricted access - confidentiality agreement
  • Estudi de la interacció metall-suport en catalitzadors Au/CeO2 a través de les reaccions d'oxidació de CO i CO-PrOx per a la purificació d'hidrogen 

    Urrich Subinas, Aitor (Universitat Politècnica de Catalunya, 2017-09)
    Open Access
    L’hidrogen, en un món on cada vegada s’utilitzen menys recursos amb contingut de carboni, es perfila com a actor principal en el marc energètic, i cada vegada serà més explotat com a al·limentació en les PEMFC (Polymer ...
  • Estudio de la aplicación de procesos de oxidación avanzada a aguas contaminadas 

    Terán Solíz, Mery Cristga (Universitat Politècnica de Catalunya, 2016-01-11)
    Bachelor thesis
    Open Access
    S'ha detectat tant en aigües residuals com en aigües de consum diverses substàncies conegudes com a contaminants emergents. Dins d'aquestes es troba la sulfaquinoxalina, que és una sulfamida emprada com a antibiòtic, ...
  • Heterogeneous Fenton-like oxidation of p-hydroxybenzoic acid using Fe/CeO2-TiO2 catalyst 

    Hammedi, Tijani; Triki, Mohamed; Alvarez, Mayra G; Llorca Piqué, Jordi; Ghorbel, Abdelhamid; Ksibi, Zouhaier; Medina Mena, Francisco (2019-04-01)
    Article
    Restricted access - publisher's policy
    This paper is built on the Fenton-like oxidation of p-hydroxybenzoic acid (p–HBZ) in the presence of H2O2 and 3%Fe supported on CeO2-TiO2 aerogels under mild conditions. These catalysts were deeply characterized by X-ray ...
  • Improving selective thermal emission properties of three-dimensional macroporous silicon through porosity tuning 

    Garin Escriva, Moises; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; Marquier, F.; Arnold, C.; Greffet, J.-J. (American Institute of Physics, 2008-08-27)
    Article
    Restricted access - publisher's policy
    We present a theoretical and experimental study on the effect of progressive porosity increase, through multiple oxidation/oxide removal steps, upon the optical characteristics in threedimensional macroporous silicon. ...
  • Increased conductivity of a hole transport layer due to oxidation by a molecular nanomagnet 

    Cheylan, Stephanie; Puigdollers i González, Joaquim; Bolink, Henk J.; Coronado Miralles, Eugenio; Voz Sánchez, Cristóbal; Alcubilla González, Ramón; Badenes Guia, Gonçal (American Institute of Physics, 2008-05-14)
    Article
    Restricted access - publisher's policy
    Thin film transistors based on polyarylamine poly?N,N?-diphenyl-N,N ?bis?4-hexylphenyl?- ?1,1?biphenyl?-4,4?-diamine ?pTPD? were fabricated using spin coating in order to measure the mobility of pTPD upon oxidation. ...
  • Influence of cyclic thermal treatments on the oxidation behavior of Ti-6Al- 2Sn-4Zr-2Mo alloy 

    Fargas Ribas, Gemma; Roa Rovira, Joan Josep; Sefer, B.; Mateo García, Antonio Manuel (2018-11-01)
    Article
    Restricted access - publisher's policy
    Ti-6Al-2Sn-4Zr-2Mo is one of the most common titanium alloys for aerospace industry. This alloy experiences oxidation phenomenon at elevated temperatures. In the present study, cyclic thermal treatments were performed in ...