• Thermal degradation of type I collagen from bones 

      Lambri, Melania Lucila; Giordano, E. D.; Bozzano, P. B.; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid; Recarte Callado, Vicente Upna Orcid (Tech Science Press, 2016)   Artículo / Artikulua  OpenAccess
      The denaturation processes of collagen in the temperature range between 450 K and 670 K are revealed through studies performed on cow rib bones by means of mechanical spectroscopy, differential scanning calorimetry, ...
    • Thermally induced structural transitions between single-crystalline states in the first hybrid compound combining Keggin-type clusters with metal-cyclam complexes: from two-dimensional covalent assemblies to discrete molecular species 

      Fernández Navarro, Leticia; Iturrospe, Amaia; Reinoso, Santiago Upna Orcid; Artetxe, Beñat; Ruiz Bilbao, Estíbaliz; San Felices, Leire; Gutiérrez Zorrilla, Juan M. (ACS, 2020)   Artículo / Artikulua  OpenAccess
      A hydrothermal reaction between the monolacunary polyoxometalate [SiW11O39]8-, a copper(II) salt, and 1,4,8,11-tetraazacyclotetradecane (cyclam) affords the first example of a hybrid compound combining metal complexes of ...
    • Thermostructural behavior in a series of lanthanide-containing polyoxotungstate hybrids with copper(II) complexes of the tetraazamacrocycle cyclam: a single-crystal-to-single-crystal transformation study 

      Martín Caballero, Jagoba; Artetxe, Beñat; Reinoso, Santiago Upna Orcid; San Felices, Leire; Vitoria, Pablo; Larrañaga, Aitor; Vilas, José Luis; Gutiérrez Zorrilla, Juan M. (ACS Publications, 2019)   Artículo / Artikulua  OpenAccess
      A series of 14 isostructural [Cu(cyclam)](2)[{Cu(cyclam)}4{(a-GeW11O39)Ln(H2O)-(OAc)(12)].18H(2)O (1-Ln, where Ln = La Lu; cyclam = 1,4,8,11-tetraazacyclotetradecane) polyoxometalate-based hybrids reported herein represent ...
    • Three-dimensional printing of acrylonitrile butadiene styrene microreactors for photocatalytic applications 

      Cabrera Barrios, Aarón; Pellejero, Ismael Upna Orcid; Oroz Mateo, Tamara; Salazar, Cristina; Navajas León, Alberto Upna Orcid; Fernandez Acevedo, Claudio; Gandía Pascual, Luis Upna Orcid (ACS, 2020)   Artículo / Artikulua  OpenAccess
      Miniaturization is a key aspect for many technological applications and the use of microreactors is an excellent solution for the intensification of chemical processes for a variety of applications. However, standard ...
    • Thrust actuator with passive restoration force for wide gap magnetic bearings 

      Royo, Isaac Upna Orcid; Beato López, Juan Jesús Upna Orcid; Castellano Aldave, J. C.; Gómez Polo, Cristina Upna Orcid (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      Active thrust magnetic bearings provide an axial force to balance the moving parts of machines. However, most devices produce null or unbalancing passive forces. Furthermore, reported designs usually feature very small ...
    • Titania-triethanolamine-kaolinite nanocomposites as adsorbents and photocatalysts of herbicides 

      Ferreira, Ana Vera de Toledo Piza Figueiredo; Barbosa, Lorrana Vietro; Souza, Suelen Delfino de; Ciuffi, Katia J.; Vicente, Miguel Ángel; Trujillano, Raquel; Korili, Sophia A. Upna Orcid; Gil Bravo, Antonio Upna Orcid; Faria, Emerson H. de (Elsevier, 2021)   Artículo / Artikulua  OpenAccess
      Kaolinite-titania adsorbents/photocatalysts were prepared by functionalizing a kaolinite with titanium(IV) triethanolaminate isopropoxide by the sol–gel route. These materials were characterized by various techniques and ...
    • Topologies for semicontinuous Richter–Peleg multi-utilities 

      Bosi, Gianni; Estevan Muguerza, Asier Upna Orcid; Raventós Pujol, Armajac Upna Orcid (Springer, 2020)   Artículo / Artikulua  OpenAccess
      The present paper gives a topological solution to representability problems related to multi-utility, in the field of Decision Theory. Necessary and sufficient topologies for the existence of a semicontinuous and finite ...
    • Tough and functional cross-linked bioplastics from sheep wool keratin 

      Fernández-d'Arlas Bidegáin, Borja Upna Orcid (Nature Research, 2019)   Artículo / Artikulua  OpenAccess
      Novel bioplastic flms derived from wool keratins were prepared by protein solution in an alkaline mild oxidative method that splits disulphide (-S-S-) bonds. The native structure of the keratin macromolecules was partially ...
    • Tryptophan levels as a marker of auxins and nitric oxide signaling 

      López Gómez, Pedro Upna Orcid; Smith, Edward N.; Bota, Pedro; Cornejo Ibergallartu, Alfonso Upna Orcid; Urra Rodríguez, Marina; Buezo Bravo, Javier Upna; Morán Juez, José Fernando Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      The aromatic amino acid tryptophan is the main precursor for indole-3-acetic acid (IAA), which involves various parallel routes in plants, with indole-3-acetaldoxime (IAOx) being one of the most common intermediates. ...
    • Tunability of hybrid silica xerogels: surface chemistry and porous texture based on the aromatic precursor 

      Rosales Reina, Beatriz; Cruz Quesada, Guillermo Upna Orcid; Padilla-Postigo, Nataly; Irigoyen-Razquin, Marian; Alonso-Martínez, Ester; López Ramón, María Victoria; Espinal Viguri, Maialen Upna Orcid; Garrido Segovia, Julián José Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      The interest in new materials with specific properties has increased because they are essential for the environmental and technological needs of our society. Among them, silica hybrid xerogels have emerged as promising ...
    • Tuning the photocatalytic performance through magnetization in Co-Zn ferrite nanoparticles 

      Cervera Gabalda, Laura María Upna; Zielinska-Jurek, Anna; Gómez Polo, Cristina Upna Orcid (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      In this work, the link between the photocatalytic performance of Co-Zn ferrite nanoparticles and the net magnetic moment is analyzed. CoxZn1-xFe2O4 nanoparticles (0 ≤ x ≤ 1) were synthesized by co-precipitation method and ...
    • Two-level resolution of relative risk of dengue disease in a hyperendemic city of Colombia 

      Adin Urtasun, Aritz Upna Orcid; Martínez Bello, Daniel Adyro; López Quílez, Antonio; Ugarte Martínez, María Dolores Upna Orcid (Public Library of Science, 2018)   Artículo / Artikulua  OpenAccess
      Risk maps of dengue disease offer to the public health officers a tool to model disease risk in space and time. We analyzed the geographical distribution of relative incidence risk of dengue disease in a high incidence ...
    • UiO-66 MOF-Derived Ru@ZrO2 catalysts for photo-thermal CO2 hydrogenation 

      Almazán, Fernando; Lafuente, Marta; Echarte Villeras, Amaya; Imizcoz Aramburu, Mikel; Pellejero, Ismael Upna Orcid; Gandía Pascual, Luis Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      The use of metal–organic frameworks (MOFs) as templates or precursors in the manufacture of heterogeneous catalysts is highly attractive due to the transfer of MOFs’ inherent porosity and homogeneous metallic distribution ...
    • Understanding blood oxygenation in a microfluidic meander double side membrane contactor 

      Malankowska, Magdalena; Julian, Ignacio; Pellejero, Ismael Upna Orcid; Rho, Hoon Suk; Schlautmann, Stefan; Tiggelaar, Roald M.; Pina, María del Pilar; Gardeniers, Han; Mallada, Reyes (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      Lung disease is one of the most important causes of high morbidity in preterm infants. In this work, we study a simple and easy to fabricate microfluidic device that demonstrates a great potential for blood oxygenation. A ...
    • Understanding the formation of Al13 and Al30 polycations to the development of microporous materials based on Al13-and Al30-PILC montmorillonites: a review 

      Cardona, Yaneth Upna Orcid; Gil Bravo, Antonio Upna Orcid; Korili, Sophia A. Upna Orcid (Elsevier, 2021)   Artículo / Artikulua  OpenAccess
      Hydrolysis of aluminum cations (Al3+), the third most abundant metal in the Earth’s crust, is considered relevant in many academic fields, including materials science and chemical engineering. AlIII -polycations and ...
    • Uniform approximations of the first symmetric elliptic integral in terms of elementary functions 

      Bujanda Cirauqui, Blanca Upna Orcid; López García, José Luis Upna Orcid; Pagola Martínez, Pedro Jesús Upna; Palacios Herrero, Pablo Upna Orcid (Springer, 2022)   Artículo / Artikulua  OpenAccess
      We consider the standard symmetric elliptic integral RF(x, y, z) for complex x, y, z. We derive convergent expansions of RF(x, y, z) in terms of elementary functions that hold uniformly for one of the three variables x, y ...
    • The uniform asymptotic method "saddle point near an end point" revisited 

      López García, José Luis Upna Orcid; Pagola Martínez, Pedro Jesús Upna; Palacios Herrero, Pablo Upna Orcid (Elsevier, 2024)   Artículo / Artikulua  OpenAccess
      We continue the program initiated in [López & all, 2009–2011] to simplify asymptotic methods for integrals: in this paper we revise the uniform method ‘‘saddle point near an end point’’. We obtain a more systematic version ...
    • Uniform convergent expansions of integral transforms 

      López García, José Luis Upna Orcid; Palacios Herrero, Pablo Upna Orcid; Pagola Martínez, Pedro Jesús Upna (American Mathematical Society, 2021)   Artículo / Artikulua  OpenAccess
      Several convergent expansions are available for most of the special functions of the mathematical physics, as well as some asymptotic expansions [NIST Handbook of Mathematical Functions, 2010]. Usually, both type of ...
    • Uniform convergent expansions of the error function in terms of elementary functions 

      Ferreira González, Chelo Upna; López García, José Luis Upna Orcid; Pérez Sinusía, Ester Upna Orcid (Springer, 2023)   Artículo / Artikulua  OpenAccess
      We derive a new analytic representation of the error function erfz in the form of a convergent series whose terms are exponential and rational functions. The expansion holds uniformly in z in the double sector | arg (±z) ...
    • Uniform convergent expansions of the Gauss hypergeometric function in terms of elementary functions 

      Ferreira González, Chelo Upna; López García, José Luis Upna Orcid; Pérez Sinusía, Ester Upna Orcid (Taylor & Francis, 2018)   Artículo / Artikulua  OpenAccess
      We consider the hypergeometric function 2F1(a, b; c; z) for z ∈ C \ [1,∞). For Ra ≥ 0, we derive a convergent expansion of 2F1(a, b; c; z) in terms of the function (1 − z)−a and of rational functions of z that is uniformly ...

      El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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