J Förster Fernandez

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The aim of this study was to identify the clinical features of Legionnaires' disease, sudden outbreaks of which demand a quick and flexible clinical approach, particularly with regard to diagnosis and therapy. A prospective and comparative study based on a clinical protocol was performed during an outbreak of Legionnaires' disease in Alcoy, Spain. The(More)
M. A. Garcia, E. Fernandez Pinel, J. de la Venta, A. Quesada, V. Bouzas, J. F. Fernández, J. J. Romero, M. S. Martín González, and J. L. Costa-Krämer Dpto. Física de Materiales, Universidad Complutense de Madrid, Madrid 28040, Spain Instituto de Cerámica y Vidrio, CSIC, Madrid 28049, Spain Instituto de Magnetismo Aplicado, Universidad Complutense de Madrid,(More)
We proposed the term photoeducation in 1988(1) to integrate the basic concepts of sun protection in one word: why, how, when, and how much one should protect the skin from the harmful effects of ultraviolet radiation (UVR). Subsequent use of the word expanded the concept further, emphasizing the positive and negative role of sunlight in man and nature.
We propose a simple algorithm for generating normally distributed pseudorandom numbers. The algorithm simulates N molecules that exchange energy among themselves following a simple stochastic rule. We prove that the system is ergodic, and that a Maxwell-like distribution that may be used as a source of normally distributed random deviates follows in the(More)
J. Chaboy,1,2 R. Boada,1,2 C. Piquer,1,2 M. A. Laguna-Marco,3 M. García-Hernández,3 N. Carmona,4 J. Llopis,4 M. L. Ruíz-González,5 J. González-Calbet,5 J. F. Fernández,6 and M. A. García6 1Instituto de Ciencia de Materiales de Aragón, Consejo Superior de Investigaciones Científicas, Universidad de Zaragoza, 50009 Zaragoza, Spain 2Departamento de Física de(More)
A. Serrano,1 E. Fernandez Pinel,2 A. Quesada,2,3 I. Lorite,4 M. Plaza,1 L. Pérez,1 F. Jiménez-Villacorta,3,5 J. de la Venta,1 M. S. Martín-González,6 J. L. Costa-Krämer,6 J. F. Fernandez,4 J. Llopis,1 and M. A. García1,4,* 1Dpto. Física de Materiales, Universidad Complutense de Madrid, 28040 Madrid, Spain 2Instituto de Magnetismo Aplicado, UCM, Las Rozas,(More)
Few examples of magnetic systems displaying a transition to pure dipolar magnetic order are known to date. As was recently shown, within the newly discovered class of single-molecule magnets, quite attractive examples of dipolar magnetism may be found. The molecular cluster spins and thus their dipolar interaction energy can be quite high, leading to(More)
J. F. Fernández, A.C. Casballero, M. Villegas, D. García 2, I. Gobernado-Mitre , J. C. Merino , J. M. Pastor 2,3 1 Electroceramic Department, Instituto de Cerámica y Vidrio (CSIC). Cantoblanco, 28049 Madrid, SPAIN 2 Center for Automotive Research and Development (CIDAUT), Technological Park of Boecillo, 47151 Valladolid, Spain s/n 28049 Madrid, SPIN 3 Dpto.(More)
We have performed Monte Carlo simulations of interacting dipoles that relax through quantum tunneling. We aim to mimic tunneling experiments on crystals of magnetic clusters, such as Fe(8), at very low temperatures. Accordingly, we allow spin flips only if the corresponding energy change is less than some 2 delta h(hf). Time evolutions of the dipolar field(More)
We report the first example of a transition to long-range magnetic order in a purely dipolarly interacting molecular magnet. For the magnetic cluster compound Mn6O4Br4(Et2dbm)6, the anisotropy experienced by the total spin S = 12 of each cluster is so small that spin-lattice relaxation remains fast down to the lowest temperatures, thus enabling dipolar(More)