Exploració per tema "Synchrotron radiation"

Ara es mostren els items 5-18 de 18

    • Identification of reaction compounds in micrometric layers from gothic paintings using combined SR-XRD and SR-FTIR 

      Salvadó Cabré, Nativitat; Buti Papiol, Salvador; Nicholson, J; Emerich, H; Labrador, A; Pradell Cara, Trinitat (2009-07)
      Article
      Accés restringit per política de l'editorial
      Synchrotron radiation X-ray diffraction ( -SR-XRD) and Fourier transform infrared spectroscopy ( -SRFTIR) are used in the non-destructive identification of reaction and aging compounds from micrometric ancient painting ...

    • Isothermal crystallization kinetics of poly(4-hydroxybutyrate) biopolymer 

      Keridou, Ina; Valle Mendoza, Luis Javier del; Funk, Lutz; Turon, Pau; Yousef, Ibraheem; Franco García, María Lourdes; Puiggalí Bellalta, Jordi (Multidisciplinary Digital Publishing Institute (MDPI), 2019-08-01)
      Article
      Accés obert
      Thermal properties and crystallization kinetics of poly(4-hydroxybutyrate) (P4HB) have been studied. The polymer shows the typical complex melting behavior associated to different lamellar populations. Annealing processes ...

    • Kinetics and crystallization path of a Fe-based metallic glass alloy 

      Duarte, Maria Jazmin; Kostka, Aleksander; Crespo Artiaga, Daniel; Jiménez Rodríguez, José Antonio; Dippel, A. C.; Renner, Frank U.; Dehm, G. (2017-04-01)
      Article
      Accés obert
      The thermal stability and the quantification of the different transformation processes involved in the overall crystallization of the Fe50Cr15Mo14C15B6 amorphous alloy were investigated by several characterization techniques. ...

    • Micro infrared spectroscopy discrimination capability of compounds in complex matrices of thin layers in real sample coatings from artworks 

      Beltran Sanchidrian, Victòria; Salvadó Cabré, Nativitat; Buti Papiol, Salvador; Cinque, Gianfelice (2015-01)
      Article
      Accés obert
      The presence of coating on manufactures either to protect them from the environment, or to give them specific properties—as well as simply to change their aspect—has been shown to be a constant practise throughout history. ...

    • New insights on blue pigments used in 15th century paintings by synchrotron radiation-based micro-FTIR and XRD 

      Salvadó Cabré, Nativitat; Buti Papiol, Salvador; Garcia Aranda, Miguel A.; Pradell Cara, Trinitat (2014-05-06)
      Article
      Accés obert
      The blue pigments used on altarpieces in 15th Century in Catalonia and Crown of Aragon are principally the azurite mineral. To a lesser extent lapis lazuli, also of mineral origin and occasionally, in the background areas, ...

    • Non-isothermal crystallization kinetics of poly(4-hydroxybutyrate) biopolymer 

      Keridou, Ina; Valle Mendoza, Luis Javier del; Funk, Lutz; Turon, Pau; Franco García, María Lourdes; Puiggalí Bellalta, Jordi (2019-08-05)
      Article
      Accés obert
      The non-isothermal crystallization of the biodegradable poly(4-hydroxybutyrate) (P4HB) has been studied by means of differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). In the first case, Avrami, ...

    • Numerical modelling of the cooling system at alba synchrotron radiation facility to understand its performance 

      Escaler Puigoriol, Francesc Xavier; Prieto Moline, María Montserrat; Quispe Flores, Marcos; Kjeldsen, Morten; De la Torre Rodriguez, Oscar (American Society of Mechanical Engineers (ASME), 2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The ALBA Synchrotron Light Source in Barcelona (Spain) requires a reliable, stable and adequate cooling system for its optimal operation. The current design with four long and intricate consumption lines with a ring type ...

    • Optimal Sample Preparation for the Analysis of Micrometric Heterogeneous Samples 

      Beltran Sanchidrian, Victòria; Salvadó Cabré, Nativitat; Buti Papiol, Salvador; Cinque, Gianfelice; Wehbe, Katia; Pradell Cara, Trinitat (2015-05-29)
      Article
      Accés obert
      Precise microanalytical techniques are essential in many fields such as cultural heritage materials, showing complex layered microstructures containing a wide range of materials of diverse nature and hardness. Noninvasive ...

    • Performance of high-temperature superconducting REBCO coated conductors under synchrotron irradiation for future circular colliders 

      Krkotic, Patrick; Traver Ramos, Oriol; Tagdulang, Nikki; Calatroni, Sergio; O'Callaghan Castellà, Juan Manuel; Pont Montaner, Montserrat (Institute of Physics (IOP), 2023-10-01)
      Article
      Accés obert
      The influence of medium-to-high energy synchrotron radiation (SR) (˜10–100 keV) produced by the ALBA Synchrotron Light Source on state-of-the-art REBCO coated conductors (CCs) has been studied to assess the feasibility of ...

    • Polyamorphic transitions in Ce-based metallic glasses by synchrotron radiation 

      Duarte Correa, María Jazmín; Bruna Escuer, Pere; Pineda Soler, Eloi; Crespo Artiaga, Daniel; Garbarino, Gaston; Verbeni, Roberto; Zhao, Kun; Wang, Wei Hua; Romero Castro, Aldo Humberto; Serrano Gutiérrez, Jorge (2011-12-01)
      Article
      Accés obert
      We report here on a polyamorphic-phase transition upon application of pressure on a Ce-based metallic glass, Ce70Al10Ni10Cu10, investigated by x-ray diffraction and inelastic x-ray scattering. This alloy is found to display ...

    • Preparation of nanocomposites of poly(epsilon-caprolactone) and multi-walled carbon nanotubes by ultrasound micro-molding. Influence of nanotubes on melting and crystallization 

      Olmo Osuna, Cristian; Amestoy, Hegoi; Casas, Maria Teresa; Martinez, Juan Carlos; Franco García, María Lourdes; Sarasua, Jose-Ramon; Puiggalí Bellalta, Jordi (2017-08-01)
      Article
      Accés obert
      Ultrasound micro-molding technology was successfully applied to prepare nanocomposites based on a poly(e-caprolactone) (PCL) matrix and multi-walled carbon nanotubes (MWCNTs). Optimization of processing parameters (i.e. ...

    • Structure, mechanical properties and nanocrystallization of (FeCoCrNi)-(B,Si) high-entropy metallic glasses 

      Panahi, Seyedeh Leila; Fornell, Jordina; Popescu, Catalin; Pineda Soler, Eloi; Sort Viñas, Jordi; Bruna Escuer, Pere (2022-02)
      Article
      Accés obert
      New high-entropy metallic glasses were produced by adding B and Si to the Fe25Co25Cr25Ni25 high entropy alloy. Extremely hard materials were obtained by inducing structural relaxation and nanocrystallization in the ...

    • Synchrotron radiation studies on even-odd and odd-even nylons 

      Franco García, María Lourdes; Puiggalí Bellalta, Jordi; Ricart López, Albert; Morales Gámez, Laura Teresa; Soto, David (IOP PUBLISHING LTD., 2009-09-08)
      Article
      Accés obert
      Aliphatic polyamides derived from odd diamine or odd dicarboxylic acid units cannot adopt a conventional sheet structure when molecular chains have an all trans conformation. However, typical fiber diffraction patterns of ...

    • Thermally induced structural transitions of nylon 4 9 as a new example of even-odd polyamides 

      Olmo Osuna, Cristian; Casas Becerra, María Teresa; Martínez Guil, Juan Carlos; Franco García, María Lourdes; Puiggalí Bellalta, Jordi (2018-02-16)
      Article
      Accés obert
      Crystalline morphology and structure of nylon 4 9 have been studied by means of optical and transmission electron microscopies, and X-ray diffraction. Rhombic crystals were characteristic of crystallization from glycerin ...