• Real elements and p-nilpotence of finite groups 

  Ballester Bolinches, Adolfo; Esteban Romero, Ramón; Ezquerro Marín, Luis Miguel  (Aracne, 2016)   Artículo / Artikulua  

  Our first main result proves that every element of order 4 of a Sylow 2-subgroup S of a minimal non-2-nilpotent group G, is a real element of S. This allows to give a character-free proof of a theorem due to Isaacs and ...

• Uniformly convergent expansions for the generalized hypergeometric functions p –1Fp and pFp 

  López García, José Luis ; Pagola Martínez, Pedro Jesús ; Karp, D. B. (Taylor & Francis, 2020)   Artículo / Artikulua

  We derive a convergent expansion of the generalized hypergeometric function p−1 F p in terms of the Bessel functions 0 F 1 that holds uniformly with respect to the argument in any horizontal strip of the complex plane. We ...

• A combination of a vibrational electromagnetic energy harvester and a giant magnetoimpedance (GMI) sensor 

  Beato López, Juan Jesús ; Royo, Isaac ; Algueta-Miguel, Jose M. ; Gómez Polo, Cristina (MDPI, 2020)   Artículo / Artikulua  

  An energy harvesting device combined with a giant magnetoimpedance (GMI) sensor is presented to analyze low frequency vibrating systems. An electromagnetic harvester based on magnetic levitation is proposed for the electric ...

• On the performances of trend and change-point detection methods for remote sensing data 

  Militino, Ana F. ; Moradi, Mohammad Mehdi; Ugarte Martínez, María Dolores  (MDPI, 2020)   Artículo / Artikulua  

  Detecting change-points and trends are common tasks in the analysis of remote sensing data. Over the years, many different methods have been proposed for those purposes, including (modified) Mann-Kendall and Cox-Stuart ...

• Decomposition and arrow-like aggregation of fuzzy preferences 

  Raventós Pujol, Armajac ; Campión Arrastia, María Jesús ; Induráin Eraso, Esteban  (MDPI, 2020)   Artículo / Artikulua  

  We analyze the concept of a fuzzy preference on a set of alternatives, and how it can be decomposed in a triplet of new fuzzy binary relations that represent strict preference, weak preference and indifference. In this ...

• Experimental evaluation of distortion in amplitude modulation techniques for parametric loudspeakers 

  San Martín Murugarren, Ricardo ; Tello, Pablo; Valencia Leoz, Ana; Marzo Pérez, Asier  (MDPI, 2020)   Artículo / Artikulua  

  Parametric loudspeakers can generate a highly directional beam of sound, having applications in targeted audio delivery. Audible sound modulated into an ultrasonic carrier will get self-demodulated along the highly directive ...

• Analysis of singular one-dimensional linear boundary value problems using two-point Taylor expansions 

  Ferreira González, Chelo ; López García, José Luis ; Pérez Sinusía, Ester  (University of Szeged (Hungría), 2020)   Artículo / Artikulua  

  We consider the second-order linear differential equation (x2 − 1)y'' + f (x)y′ + g(x)y = h(x) in the interval (−1, 1) with initial conditions or boundary conditions (Dirichlet, Neumann or mixed Dirichlet–Neumann). The ...

• Comparative performance of coke oven gas, hydrogen and methane in a spark ignition engine 

  Ortiz Imedio, Rafael; Ortiz, A.; Urroz Unzueta, José Carlos; Diéguez Elizondo, Pedro; Gorri, D.; Gandía Pascual, Luis; Ortiz, I. (Elsevier, 2020)   Artículo / Artikulua

  In this study, coke oven gas (COG), a by-product of coke manufacture with a high volumetric percentage of H2 and CH4, has been identified as auxiliary support and promising energy source in stationary internal combustion ...

• 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 ; Artetxe, Beñat; Ruiz Bilbao, Estíbaliz; San Felices, Leire; Gutiérrez Zorrilla, Juan M. (ACS, 2020)   Artículo / Artikulua

  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 ...

• Zeolite synthesis from aluminum saline slag waste 

  Yoldi Sangüesa, María; Fuentes Ordóñez, Edwin Gustavo; Korili, Sophia A.; Gil Bravo, Antonio  (Elsevier, 2020)   Artículo / Artikulua

  This work describes the synthetic procedures developed to obtain zeolite X (NaX), zeolite A (LTA) and sodalite (SOD) using aluminum saline slag waste (AlSSW) as aluminum source in a two-step hydrothermal method involving ...

• Bayesian inference in multivariate spatio-temporal areal models using INLA: analysis of gender-based violence in small areas 

  Vicente, G.; Goicoa Mangado, Tomás ; Ugarte Martínez, María Dolores  (Springer, 2020)   Artículo / Artikulua  

  Multivariate models for spatial count data are currently receiving attention in disease mapping to model two or more diseases jointly. They have been thoroughly studied from a theoretical point of view, but their use in ...

• Reeb’s theorem and periodic orbits for a rotating Hénon–Heiles potential 

  Lanchares, Víctor; Pascual, Ana Isabel; Iñarreta, Manuel; Salas, José Pablo; Palacián Subiela, Jesús Francisco ; Yanguas Sayas, Patricia  (Springer, 2019)   Artículo / Artikulua

  We apply Reeb’s theorem to prove the existence of periodic orbits in the rotating Hénon– Heiles system. To this end, a sort of detuned normal form is calculated that yields a reduced system with at most four non degenerate ...

• Optimizing the removal of nitrate by adsorption onto activated carbon using response surface methodology based on the central composite design 

  Taoufik, Nawal; Elmchaouri, Abdellah; Korili, Sophia A.; Gil Bravo, Antonio  (Taylor & Francis, 2020)   Artículo / Artikulua

  This study sheds light on the adsorption process for the removal of nitrate ions from synthetic aqueous solutions. This contaminant pose a potential risk to the environment and can cause health effects including cancers ...

• Effect of Cu substitution on the magnetic and magnetic induction heating response of CdFe₂O₄ spinel ferrite 

  Ghasemi, R.; Echeverría Morrás, Jesús ; Pérez de Landazábal Berganzo, José Ignacio ; Beato López, Juan Jesús ; Naseri, M.; Gómez Polo, Cristina (Elsevier, 2020)   Artículo / Artikulua

  In this work, a comparative study of the effect of Cu on the structural, magnetic and magnetic induction heating response in CdFe2O4 spinel is presented. The ceramic nanoparticles (Cu1−xCdxFe2O4; 0 ≤ x ≤ 1) were synthesized ...

• Progress and perspectives on pillared clays applied in energetic and environmental remediation processes 

  Gil Bravo, Antonio ; Vicente, Miguel Ángel (Elsevier, 2020)   Artículo / Artikulua

  Pillared interlayered clays (PILCs) are materials that show a two-dimensional layered porous structure with properties that could be interesting alternatives to zeolites and other microporous solids. Some of the properties ...

• Zn-Ti-Al layered double hydroxides synthesized from aluminum saline slag wastes as efficient drug adsorbents 

  Santamaría Arana, Leticia ; López Aizpún, María; García Padial, Marcos; Vicente, Miguel Ángel; Korili, Sophia A.; Gil Bravo, Antonio  (Elsevier, 2020)   Artículo / Artikulua

  This work reports the synthesis of Zinc-Titanium-Aluminum (ZnTiAl) layered double hydroxides (LDH) with various proportions of Al[sbnd]Ti and a Zn/(Al[sbnd]Ti) molar ratio of 3:1 by the co-precipitation method. Two series, ...

• Topologies for semicontinuous Richter–Peleg multi-utilities 

  Bosi, Gianni; Estevan Muguerza, Asier ; Raventós Pujol, Armajac  (Springer, 2020)   Artículo / Artikulua

  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 ...

• Effect of the acid activation on a layered titanosilicate AM-4: the fine-tuning of structural and physicochemical properties 

  Timofeeva, Maria N.; Kalashnikova, Galina O.; Shefer, Kristina I.; Mel'gunova, Elena A.; Panchenko, Valentina N.; Nikolaev, Anatoliy I.; Gil Bravo, Antonio  (Elsevier, 2020)   Artículo / Artikulua

  In this work we investigated the microporous layered titanosilicate AM-4 (Aveiro-Manchester material number 4) of a synthetic analogous the mineral Lintisite having edge-shared brookite-type TiO6 chains. The objective of ...

• Orness for real m-dimensional interval-valued OWA operators and its application to determine a good partition 

  Miguel Turullols, Laura de ; Paternain Dallo, Daniel ; Lizasoain Iriso, María Inmaculada ; Ochoa Lezaun, Gustavo ; Bustince Sola, Humberto  (Taylor & Francis, 2019)   Artículo / Artikulua

  Ordered Weighted Averaging (OWA) operators are a profusely applied class of averaging aggregation functions, i.e. operators that always yield a value between the minimum and the maximum of the inputs. The orness measure ...

• Separación electrostática de una emulsión de glicerina en biodiésel con aplicación de varios voltajes y distancias entre electrodos 

  Huangal, Sebastian; Cieza, Jaime L.; Gil Bravo, Antonio  (Centro de Información Tecnológica, 2019)   Artículo / Artikulua  

  Con el propósito de aplicar una tecnología limpia y de bajo consumo energético en la separación de emulsiones, se construyó un separador electrostático de 1,0 dm3. Se utilizaron electrodos de cobre rectangulares. Para los ...

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