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Zaragoza, Spain

The University of Zaragoza, sometimes referred to as Saragossa University is a university located in Zaragoza, in the Aragon region of Spain. Founded in 1542, it is one of the oldest universities in Spain, with a history dating back to the Roman period. The university has over 40,000 students in its 22 faculties. The university is the only public university in the region. Its activity is spread along the three provinces of Aragon, with teaching campuses and research centres in Huesca, Teruel and Zaragoza. Wikipedia.

New fossil discoveries in the middle Cambrian of Spain have considerably expanded our knowledge of the temporal and spatial distribution of some major clades of echinoderms including sucocystid cinctans, isorophid edrioasteroids, cothurnocystid stylophorans, ctenocystoids, and a new group of blastozoans ("eocystitids"). Because many of these taxa appear close to the beginning of the middle Cambrian, it seems likely that their origins must be placed in the early Cambrian. These results, based on articulated specimens provided from Echinoderm Lagerstätten, agree with the hidden diversity provided from isolated ossicles from other Gondwanan areas. © 2010 Geological Society of America. Source

Garcia-Vidal F.J.,Autonomous University of Madrid | Martin-Moreno L.,University of Zaragoza | Ebbesen T.W.,University of Strasbourg | Kuipers L.,FOM Institute for Atomic and Molecular Physics
Reviews of Modern Physics | Year: 2010

This review provides a perspective on the recent developments in the transmission of light through subwavelength apertures in metal films. The main focus is on the phenomenon of extraordinary optical transmission in periodic hole arrays, discovered over a decade ago. It is shown that surface electromagnetic modes play a key role in the emergence of the resonant transmission. These modes are also shown to be at the root of both the enhanced transmission and beaming of light found in single apertures surrounded by periodic corrugations. This review describes both the theoretical and experimental aspects of the subject. For clarity, the physical mechanisms operating in the different structures considered are analyzed within a common theoretical framework. Several applications based on the transmission properties of subwavelength apertures are also addressed. © 2010 The American Physical Society. Source

Roubeau O.,University of Zaragoza
Chemistry - A European Journal | Year: 2012

One-dimensional coordination FeII polymers constructed through triple N1,N2-1,2,4-triazole bridges form a unique class of spin-crossover materials, the synthetic versatility of which allows tuning the spin-crossover properties, the design of gels, films, liquid crystals, and nanoparticles and single-particle addressing. This Minireview provides the first complete overview of these very attractive switchable materials and their most recent developments. The spin-crossover toolbox: A complete and concise overview of all the spin-crossover [Fe(Rtrz)3][A]x systems reported is provided (Rtrz is a 4-substituted-1,2,4-triazole; A=monovalent anion). The structural and magneto-optical properties of these one-dimensional coordination polymers are summarised, as well as their implementation into other phases of matter or nanostructured objects. The most relevant and recent developments based on this very attractive class of switchable materials are highlighted. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

Laguna-Bercero M.A.,University of Zaragoza
Journal of Power Sources | Year: 2012

New and more efficient energy conversion systems are required in the near future, due in part to the increase in oil prices and demand and also due to global warming. Fuel cells and hybrid systems present a promising future but in order to meet the demand, high amounts of hydrogen will be required. Until now, probably the cleanest method of producing hydrogen has been water electrolysis. In this field, solid oxide electrolysis cells (SOEC) have attracted a great interest in the last few years, as they offer significant power and higher efficiencies compared to conventional low temperature electrolysers. Their applications, performances and material issues will be reviewed. © 2011 Elsevier B.V. All rights reserved. Source

Falvello L.R.,University of Zaragoza
Angewandte Chemie - International Edition | Year: 2010

The understanding of the hydrogen bond, an interaction that appears in diverse environments and exercises widely varying functions, continues to expand with the report of a neutron diffraction analysis of a complex displaying an O-H···Pt hydrogen bond with unligated water as the donor. What is known about hydrogen bonding so far provides a broad context for this new result. Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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