Now showing items 11402-11421 of 78880

  • Biocombustibles i crisi alimentària. Paradoxes de les polítiques energètiques. 

    Batet Miracle, Lluís; Velo García, Enrique (2008-11)
    Article
    Open Access
  • Biocompatibility and drug release behavior of scaffolds prepared by coaxial electrospinning of poly(butylene succinate) and polyethylene glycol 

    Llorens, E.; Ibañez, H; Valle Mendoza, Luis Javier del; Puiggalí Bellalta, Jordi (2015-04-01)
    Article
    Restricted access - publisher's policy
    Scaffolds constituted by electrospun microfibers of poly(ethylene glycol) (PEG) and poly(butylene succinate) (PBS) were studied. Specifically, coaxial microfibers having different core-shell distributions and compositions ...
  • Biocomposites using waste whole chicken feathers and thermoplastic matrices 

    Carrillo Navarrete, Fernando; Rahhali, Ahmed; Cañavate Ávila, Francisco Javier; Colom Fajula, Xavier (Sage, 2013-10)
    Article
    Restricted access - publisher's policy
    This study deals with the preparation and characterization of thermoplastic composites using polypropylene, high-density polyethylene and polylactic acid matrices and including whole chicken feathers as reinforcement. The ...
  • Biocompounds from rapeseed oil industry co-stream as active ingredients for skin care applications 

    Rivera Rodríguez, Diana Marcela; Rommi, Katariina; Macedo Fernandes, Margarida Maria; Lantto, Raija; Tzanov, Tzanko (2015-10-01)
    Article
    Open Access
    OBJECTIVE: Despite the great number of substances produced by the skincare industry, very few of them seem to truly have an effect on the skin. Therefore, given the social implications surrounding physical appearance, the ...
  • Bioconcrete- a sustainable substitute for concrete? 

    Gonsalves, Gayle Maria (Universitat Politècnica de Catalunya, 2011-06)
    Master thesis
    Open Access
    Today the application of concrete is rapidly increasing worldwide; it is already the most used manmade material in the world as it is relatively cheap and its basic ingredients (sand/ gravel/ water) are readily available. ...
  • Bioconstrucció, alternativa a la construcció actual? 

    Munar Gomila, Joan (Universitat Politècnica de Catalunya, 2011-02)
    Master thesis
    Open Access
    Inicialment, aquest treball fi de màster intenta fer una aproximació als principis o fonaments d’un moviment sorgit a Alemanya conegut allà amb el nom de baubiologie i introduït a l’Estat espanyol com biologia de la ...
  • Biodegradabilidad de efluentes textiles tratados con técnicas de oxidación electroquímica 

    Vilaseca i Vallvé, Ma. Mercè (Maria Mercè); Gutiérrez Bouzán, Mª Carmen; Crespi Rosell, Martin (Instituto de Investigación Textil y Cooperación Industrial, 2003-01)
    Article
    Open Access
    La oxidación electroquímica de efluentes textiles es un método eficaz para la eliminación del color, especialmente cuando el agua residual contiene colorantes reactivos. Sin embargo, antes de la aplicación industrial de ...
  • Biodegradabilidad de la materia orgánica natural del agua y efecto del ozono 

    Rodríguez Vidal, Francisco Javier; Pérez Serrano, Antonio; Orozco Barrenetxea, Carmen; González Delgado, Mª Nieves; Ibeas Reoyo, Mª Victoria (Fundación para el Fomento de la Ingeniería del Agua, 2000-09)
    Article
    Open Access
    En el presente trabajo se estudia la biodegradabilidad de la materia orgánica natural del agua (MON), constituída fundamentalmente por las sustancias húmicas (ácidos fúlvicos y húmicos), y la influencia del tratamiento de ...
  • Biodegradabilidad, toxicidad y acumulación del colorante acido azul omegacromo en la trucha arco iris "Salmo Gairdneri". 

    Riva Juan, Mª del Carmen; Vilaseca i Vallvé, Ma. Mercè (Maria Mercè); Crespi Rosell, Martin (Instituto de Investigación Textil y Cooperación Industrial, 1988-01)
    Article
    Open Access
    Se estudia el impacto ambiental producido por el colorante de tintura Azul Omegocromo B. Se determina: su biodegradabilidad en condiciones aerobias, su toxicidad en la trucha arco iris "Salmo gairdnen" en condiciones agudas ...
  • Biodegradabilidat aeròbia i anaeròbia de la matèria orgànica acumulada en aiguamolls per depurar aigua 

    Coma Homs, Laura (Universitat Politècnica de Catalunya, 2011-02-17)
    Minor thesis
    Open Access
    El present treball estudia la topologia dels sòlids acumulats a aiguamolls construïts de flux subsuperficial i la seva potencial biodegradabilitat per via aeròbia i anaeròbia, en una planta pilot que consta de tres línies ...
  • Biodegradabilitat de la matèria orgànica d'aiguamolls construïts per depurar 

    Vaello Somoza, Núria (Universitat Politècnica de Catalunya, 2006-05)
    Minor thesis
    Open Access
  • Biodegradabilty properties of solids accumulated in a full scale subsurface flow constructed wetland 

    García Serrano, Joan; Baqué, Ferran; Puigagut Juárez, Jaume; Llorens Ribes, Esther (IWA, 2008)
    Conference report
    Restricted access - publisher's policy
  • Biodegradable aromatic copolyesters made from bicyclic acetalized galactaric acid 

    Lavilla Aguilar, Cristina; Alla Bedahnane, Abdelilah; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Benito, Elena; García Martín, Maria de Gracia; Galbis Pérez, Juan Antonio; Muñoz Guerra, Sebastián (2012-08-15)
    Article
    Restricted access - publisher's policy
    Random poly(hexamethylene terephthalate-co-galactarate) s and poly(dodecamethylene terephthalate-co-galactarate) s copolyesters covering the whole range of compositions were obtained with weight-average molecular weights ...
  • Biodegradable copolyesters of poly(hexamethylene terephthalate) containing bicyclic 2,4:3,5-di-O-methylene-D-glucarate units 

    Japu, Cristina; Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon; Alla Bedahnane, Abdelilah; García Martín, Maria de Gracia; Galbis Pérez, Juan Antonio; Muñoz Guerra, Sebastián (2014-11-01)
    Article
    Restricted access - publisher's policy
    A set of copolyesters (PHTxGluxy) with compositions ranging between 90/10 and 50/50 in addition to the parent homopolyesters poly(hexamethylene terephthalate) (PHT) and PHGlux, are prepared by the melt polycondensation of ...
  • Biodegradable Poly(Ester Amide)s: Synthesis and Applications 

    Rodríguez Galán, Rafael Alfonso; Franco García, María Lourdes; Puiggalí Bellalta, Jordi (Nova Publishers, 2011)
    Part of book or chapter of book
    Open Access
  • Biodegradation of leather tanned with inorganic salts 

    Bacardit Dalmases, Anna; Jorba, Montse; Font Vallès, Joaquim; Shendrik, Alexander; Ollé Otero, Lluís (2011-04-14)
    Article
    Restricted access - publisher's policy
    This paper aims to evaluate the physical, chemical and biological processes associated with the deterioration of leather tanned with inorganic salts. The samples of leather were exposed during eight months to outdoor ...
  • Biodegradation of wet-white leather 

    Ollé Otero, Lluís; Jorba Rafart, Montse; Font Vallès, Joaquim; Shendrik, Alexander; Bacardit Dalmases, Anna (2011)
    Article
    Restricted access - publisher's policy
    This paper deals with the study of the physical, chemical and biological processes associated with the deterioration of wet-white leather. The samples of leather were exposed for eight months to outdoor weathering and ...
  • Biodiesel from microalgae 

    Aullón Alcaine, Anna (Universitat Politècnica de Catalunya, 2010-02)
    Master thesis (pre-Bologna period)
    Open Access
    In this project we will travel back in time to the nineteenth century to discover the inventor of the diesel engine, Rudolf Diesel, and his renewable fuel vision that is only now being realized. Biodiesel has received ...
  • Biodiesel production using supercritical methanol/carbon dioxide mixtures in a continuous reactor 

    Maçaira, José; Santana Scotelari de Souza, Aline; Recasens Baxarías, Francisco Javier; Larrayoz Iriarte, María Angeles (Elsevier Science Ltd., 2011-03-01)
    Article
    Restricted access - publisher's policy
    Fatty acid methyl esters (biodiesel) were produced by the transesterification of triglycerides with compressed methanol (critical point at 240 C and 81 bar) in the presence of solid acids as heterogeneous catalyst (SAC-13). ...
  • Biodigestores de bajo coste para climas andinos 

    Poggio, Davide; Paiva Prado, Margot; Ferrer Martí, Ivet; Velo García, Enrique (2009-11-09)
    Article
    Open Access
    En el Altiplano Andino existe una alta demanda de biodigestores anaeróbicos por parte de los pequeños productores ganaderos, a causa del escaso acceso a combustibles limpios y a fertilizantes eficientes, y a la abundancia ...