• Article
  

  Research facilities and highlights at the Centro Nacional de Aceleradores (CNA) 

  Gómez Camacho, Joaquín José; García López, Francisco Javier; Guerrero Sánchez, Carlos; López Gutiérrez, José María; García-Tenorio García-Balmaseda, Rafael; Santos Arévalo, Francisco Javier; Chamizo, E.; Ferrer Fernández, Francisco Javier; Jiménez Ramos, María del Carmen; Balcerzyk, Marcin; Fernández Martínez, Begoña (Springer, 2021)

  The Centro Nacional de Aceleradores is a user-oriented accelerator facility in Seville, Spain. Its main facilities are a ...

• Article
  

  Dispersion analysis of periodic structures in anisotropic media: application to liquid crystals 

  Alex Amor, Antonio; Palomares Caballero, Ángel; Mesa Ledesma, Francisco Luis; Quevedo Teruel, Óscar; Padilla, Pablo (IEEE Computer Society, 2022)

  This paper presents an efficient method to compute the dispersion diagram of periodic and uniform structures with generic ...

• Article
  

  On the use of 210Pb-based records of sedimentation rates and activity concentrations for tracking past environmental changes 

  Abril Hernández, José María (Elsevier, 2022)

  Lead-210 from natural atmospheric fallout is widely used in multidisciplinary studies to date recent sediments. Some of ...

• Article
  

  Simulation-Assisted Efficient Computation of the Dispersion Diagram of Periodic Structures: A comprehensive overview with applications to filters, leaky-wave antennas and metasurfaces 

  Mesa Ledesma, Francisco Luis; Valerio, Guido; Rodríguez Berral, Raúl; Quevedo Teruel, Óscar (IEEE Computer Society, 2021)

  A hybrid method that combines the results of a commercial simulator with analytical postprocessing is discussed and used ...

• Article
  

  Study of forward and backward modes in double-sided dielectric-filled corrugated waveguides 

  Castillo Tapia, Pilar; Mesa Ledesma, Francisco Luis; Yakovlev, Alexander B.; Valerio, Guido; Quevedo Teruel, Óscar (MDPI, 2021)

  This work studies the propagation characteristics of a rectangular waveguide with aligned/ misaligned double-sided ...

• Article
  

  Assessment of natural radioactivity levels and radiation exposure in new building materials in Spain 

  Más Balbuena, José Luis; Caro Ramírez, J. R.; Hurtado Bermúdez, Santiago José; Leiva Fernández, Carlos (Oxford University Press, 2021)

  Novel building materials were manufactured and analyzed for 226Ra, 232Th and 40K using an HPGe gamma-ray spectrometer. The ...

• Article
  

  Cross-Polarization Control in FSSs by Means of an Equivalent Circuit Approach 

  Molero, Carlos; Alex Amor, Antonio; Mesa Ledesma, Francisco Luis; Palomares Caballero, Ángel; Padilla, Pablo (IEEE Computer Society, 2021)

  This paper presents an efficient equivalent circuit approach (ECA), based on a Floquet modal expansion, for the study of ...

• Article
  

  Dispersion analysis of twist-symmetric dielectric waveguides 

  Castillo Tapia, Pilar; Gassen, Kwinten van; Chen, Qiao; Mesa Ledesma, Francisco Luis; Sipus, Zvonimir; Quevedo Teruel, Óscar (MDPI, 2021)

  We propose a circular twist-symmetric dielectric waveguide that is polarization-selective. In the practical implementation ...

• Article
  

  Exploring the potentials of the multi-modal equivalent circuit approach for stacks of 2-D aperture arrays 

  Alex Amor, Antonio; Mesa Ledesma, Francisco Luis; Palomares Caballero, Ángel; Molero, Carlos; Padilla, Pablo (IEEE Computer Society, 2021)

  Many frequency-selective surface (FSS) structures are based on the use of a single periodic array of slot/apertures in a ...

• Article
  

  On the Benefits of Glide Symmetries for Microwave Devices 

  Quevedo Teruel, Óscar; Chen, Qiao; Mesa Ledesma, Francisco Luis; Fonseca, Nelson J. G.; Valerio, Guido (IEEE Computer Society, 2021)

  The presence of glide symmetries in periodic structures can introduce beneficial modifications in their electromagnetic ...

• Article
  

  Experiences from a case study of multi-model application to assess the behaviour of pollutants in the Dnieper–Bug Estuary 

  Monte, Luigi; Hakanson, Lars; Periáñez Rodríguez, Raúl; Laptev, Gennady; Zhelezniak, Mark; Maderich, Vladimir; Angeli, Giacomo; Kashebutsky, Vladimir (Elsevier, 2006)

  The present paper describes the results of the application of four state-of-the-art models to predict the concentrations ...

• Article
  

  Assessment of state-of-the-art models for predicting the remobilisation of radionuclides following the flooding of heavily contaminated areas: the case of Pripyat River floodplain 

  Monte, Luigi; Periáñez Rodríguez, Raúl; Kivva, Sergey; Laptev, Gennady; Angeli, Giacomo; Barros, Haydn (Elsevier, 2006)

  The performances of models are assessed to predict the wash-off of radionuclides from contaminated flooded areas. This ...

• Article
  

  A rapid response model for simulating radioactivity dispersion in the Strait of Gibraltar 

  Periáñez Rodríguez, Raúl; Pascual Granged, Arturo José (Springer, 2007)

  GISPART (GIbraltar Strait PARticle Tracking model) is a three-dimensional particle-tracking code that simulates the ...

• Article
  

  Chemical and oil spill rapid response modelling in the Strait of Gibraltar–Alborán Sea 

  Periáñez Rodríguez, Raúl (Elsevier, 2007)

  A numerical model that simulates the dispersion of contaminants, including oil spills, in the Strait of Gibraltar–Alboran ...

• Article
  

  Modeling of 226Ra behavior in a Spanish estuary affected by the phosphate industry 

  Periáñez Rodríguez, Raúl; Absi, Abdeslam; Villa Alfageme, María; Moreno González, Helena Patricia; Manjón Collado, Guillermo (Springer, 2007)

  The Odiel and Tinto rivers, southwest Spain, form a fully mixed estuary. An industrial area that includes a complex dedicated ...

• Article
  

  A particle-tracking model for simulating pollutant dispersion in the Strait of Gibraltar 

  Periáñez Rodríguez, Raúl (Elsevier, 2004)

  A particle-tracking model to simulate the dispersion of contaminants in the Strait of Gibraltar has been developed. The ...

• Article
  

  On the sensitivity of a marine dispersion model to parameters describing the transfers of radionuclides between the liquid and solid phases 

  Periáñez Rodríguez, Raúl (Elsevier, 2004)

  The sensitivity of a marine dispersion model for non-conservative radionuclides, pre viously developed and validated for ...

• Article
  

  Self-cleaning in an estuarine area formerly affected by 226Ra anthropogenic enhancements 

  Absi, Abdeslam; Villa Alfageme, María; Moreno González, Helena Patricia; Manjón Collado, Guillermo; Periáñez Rodríguez, Raúl (Elsevier, 2004)

  The estuary of the Odiel River has been affected by both direct discharges of phosphogypsum (radium enriched industrial ...

• Article
  

  Testing the behaviour of different kinetic models for uptake/release of radionuclides between water and sediments when implemented in a marine dispersion model 

  Periáñez Rodríguez, Raúl (Elsevier, 2004)

  Three kinetic models for adsorption/release of 137Cs between water and sediments have been tested when they are included ...

• Article
  

  The dispersion of 137Cs and 239,240Pu in the Rhone River plume: a numerical model 

  Periáñez Rodríguez, Raúl (Elsevier, 2004)

  A numerical three dimensional model to simulate the transport of Cs and Pu by the Rhone River plume has been developed. ...

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