Exploració per tema "Fibers"

Ara es mostren els items 1-20 de 27

    • A facile and green method to hydrophobize films of cellulose nanofibrils and silica by laccase-mediated coupling of nonpolar colloidal particles 

      Cusola Aumedes, Oriol; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa; Rojas, Orlando J. (2014-10-01)
      Article
      Accés restringit per política de l'editorial
      Hydrophobic particles based on dodecyl 3,4,5-trihydroxybenzoate (LG) were coupled onto the surface of cellulose nanofibrils (CNFs) and silica by treatment with a multicomponent colloidal system (MCS) derived from the ...

    • A novel enzymatic approach to nanocrystalline cellulose preparation 

      Beltramino, Facundo; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa; Valls Vidal, Cristina (2018-06-01)
      Article
      Accés obert
      In this work, conditions for an enzymatic pretreatment prior to NCC isolation from cotton linter were assessed. Different cellulase doses and reaction times were studied within an experimental design and NCC were obtained. ...

    • Assessment of the natural fiber reinforced bio-polyethylene composites flexural macro and micromechanical properties 

      Tarrés Farrés, Joaquim Agustí; Ardanuy Raso, Mònica (2022-10-12)
      Article
      Accés obert
      One of the most common load modes is flexure. The paper measures and models the flexural strength and modulus of a bio-polyethylene reinforced with thermos-mechanical fibers from corn stover. Moreover, the authors use ...

    • Bending fatigue of macrosynthetic fibre reinforced concrete: experimental program and preliminary constitutive equation 

      Martinello Carlesso, Debora; Fuente Antequera, Albert de la (2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The use of fibre reinforced concrete (FRC) elements without traditional reinforcement is increasing in applications for which the structure is exposed to cyclic loadings, such as pavements, bridge deck overlays and offshore ...

    • Computational modeling of electromechanical propagation in the helical ventricular anatomy of the heart 

      Marcé Nogué, Jordi; Fortuny Anguera, Gerard; Ballester Rodés, Manel; Carreras Costa, Francesc; Roure Fernández, Francisco (Elsevier, 2013-07-31)
      Article
      Accés obert
      The classical interpretation of myocardial activation assumes that the myocardium is homogeneous and that the electrical propagation is radial. However, anatomical studies have described a layered anatomical structure ...

    • Corona plasma modification of polyamide 66 for the design of textile delivery systems for cosmetic therapy 

      Labay, Cédric Pierre; Canal Arias, José María; Navarro Sentanyes, Antonio; Canal Barnils, Cristina (2014)
      Article
      Accés restringit per política de l'editorial
      Cosmetic and medical applications of technical textiles are a research expanding field. One of the added values of these new materials would be that they are suitable to contain and release active ingredients in a controlled ...

    • Criterios y alternativas para la evaluación de la tenacidad en hormigones con fibras de acero 

      Zerbino, Raúl; Gettu, Ravindra; Agulló Fité, Luís; Aguado de Cea, Antonio (Colegio de Ingenieros de Caminos, Canales y Puertos, 2003)
      Article
      Accés obert
      Los Hormigones Reforzados con Fibras (HRF) constituyen una de las innovaciones mas relevantes en el campo de los hormigones especiales. La presencia del refuerzo provoca una sustancial modificación de la respuesta mecánica ...

    • Design of a prototype for the in situ forming of a liquid infused preform (ISFLIP) process 

      Juan Muñoz, Jaime; Salán Ballesteros, Maria Núria; Silva, Arlindo; Tornero, José Antonio (2020-01)
      Article
      Accés obert
      The world is changing and demanding stronger, lighter and more versatile materials. Taking advantage of the full potential of these materials also requires versatile manufacturing processes. The in situ forming of a liquid ...

    • Development of polymeric hollow fiber membranes containing catalytic metal nanoparticles 

      Macanás de Benito, Jorge; Ouyang, Lu; Bruening, Merlin L.; Muñoz Tapia, Maria; Remigy, Jean-Christophe; Lahitte, Jean-François (2010-10-31)
      Article
      Accés obert
      Metal nanoparticles (MNPs) have unique physico-chemical properties advantageous for catalytic applications which differ from bulk material. However, the main drawback of MNPs is their insufficient stability due to a high ...

    • Effect of solvent choice on the self-assembly properties of a diphenylalanine amphiphile stabilized by an ion pair 

      Mayans Tayadella, Enric; Ballano Ballano, María Gema; Sendros, Javier; Font Bardia, Mercè; Campos López, Josefina de Lourdes; Puiggalí Bellalta, Jordi; Cativiela, Carlos; Alemán Llansó, Carlos (2017-07-19)
      Article
      Accés restringit per política de l'editorial
      A diphenylalanine (FF) amphiphile blocked at the C terminus with a benzyl ester (OBzl) and stabilized at the N terminus with a trifluoroacetate (TFA) anion was synthetized and characterized. Aggregation of peptide molecules ...

    • El rastro invisible y tóxico de billones de colillas 

      Belzagui Elder, Francisco; Gutiérrez Bouzán, María Carmen (2021-02-14)
      Article
      Accés obert
      ¿Sabía que anualmente se fuman 6 billones de cigarrillos? ¿Y que 4,5 billones de colillas terminan en el medio ambiente? ¡Son más de 8 millones por minuto! Es bien sabido que fumar tiene un impacto en la salud de los ...

    • Estudi relatiu a l'efecte de la incorporació de fibres sintètiques polimèriques d'alt mòdul elàstic en el formigó projectat per via humida 

      Canals i Llopart, Guillem (Universitat Politècnica de Catalunya, 2002-09)
      Tesina
      Accés obert
      El formigó és el material més extensament utilitzat en l’àmbit de la construcció gràcies a les seves excel·lents propietats que el converteixen en el material econòmicament i funcional més viable. Amb l’objectiu d’ampliar ...

    • Física textil: propiedades físicas para caracterizar la calidad de las fibras textiles 

      Carrera Gallissà, Enric (2017-06-23)
      Llibre
      Accés obert
      Física textil. Propiedades físicas para caracterizar la calidad de las fibras textiles, es un material docente diseñado para el seguimiento de la asignatura “Materiales para el diseño de productos textiles” del Grado en ...

    • Gap soliton in a waveguide array with a saturating defocusing nonlinearity 

      Gaizzuskas, E; Savickas, A.; Staliunas, Kestutis (2014-03-01)
      Article
      Accés restringit per política de l'editorial
      We investigate radiation of the solitary waves in the first band gap of the waveguide array with a defocusing nonlinearities of different types (Kerr nonlinearity and saturating nonlinearity). We confirm recent findings ...

    • Hybrid microfibers based on polylactic acid/hydroxypropyl-methyl-cellulose loaded with curcumin 

      Papadaki, Nafsika (Universitat Politècnica de Catalunya, 2023-01-26)
      Projecte Final de Màster Oficial
      Accés obert
      En aquest estudi s'ha preparat una matriu polimèrica basada en microfibres obtingudes mitjançant la tècnica d'electrospinning. Les microfibres es caracteritzen per la composició d'àcid polilàctic (PLA, polímer hidròfob) ...

    • Investigation of mid-term network migration scenarios comparing multi-band and multifiber deployments 

      Shariati, Mohammad Behnam; Sayyad Khodashenas, Pouria; Rivas Moscoso, José Manuel; Ben Ezra, Shalva; Klonidis, Dimitrios; Jiménez, Felipe; Velasco Esteban, Luis Domingo; Tomkos, Ioannis (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      We compared two different mid-term migration scenarios for core network capacity scaling, realized using either multi-band or multi-fiber systems. We show, under realistic assumptions of current costs, that the multi-fiber ...

    • Laccase-mediated coupling of nonpolar chains for the hydrophobization of lignocellulose 

      García Ubasart, Jordi; Vidal Lluciá, Teresa; Torres López, Antonio Luis; Rojas, Orlando J. (2013-04-09)
      Article
      Accés restringit per política de l'editorial
      We investigate the use of laccase enzymes to couple short nonpolar chains containing aromatic groups onto flax fibers and nanofibrillated cellulose (NFC) with different lignin contents. Trametes villosa, Pycnoporus ...

    • Mechanical and chemical recycling of end-of-live clothes 

      Therache, Tom (Universitat Politècnica de Catalunya, 2021-06-22)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      La OMS estima que el 20% de la contaminación industrial del agua proviene de la fabricación textil, que libera colorantes y otros productos químicos en las vías navegables de los países fabricantes. El reciclaje textil se ...

    • Microplane model M7f for fiber reinforced concrete 

      Caner, Ferhun Cem; Bažant, Zdeněk Pavel; Wendner, Roman (2013-06)
      Article
      Accés restringit per política de l'editorial
      Model M7f is a new model for fiber reinforced concretes under static and dynamic loads, which features two kinds of improvement over the earlier versions: (1) It is built on M7, a new, greatly improved, microplane model ...

    • Microplane model M7for fiber reinforced concrete 

      Caner, Ferhun Cem; Bažant, Zdeněk Pavel; Wendner, Roman (2013-06-01)
      Article
      Accés restringit per política de l'editorial
      Model M7f is a new model for fiber reinforced concretes under static and dynamic loads, which features two kinds of improvement over the earlier versions: (1) It is built on M7, a new, greatly improved, microplane model ...