Tres enfermedades transmitidas por garrapatas

183 casos de babesiosis diagnosticados mediante la visualización del parásito en frotis de sangre procedente de la oreja y teñida con colorante de Wright fueron observados en una clínica de Orense (noroeste de España) durante el período comprendido entre el l de enero de 1991 y el 31 de diciembre de 1992. Concomitantemente, en 19 casos se observaron mórulas de Ehrlichia canis y en otro caso se diagnosticó enfermedad canina de Lyme mediante inmunofluorescencia indirecta. En el presente trabajo se quiere resaltar, en primer lugar, la periodicidad con que se presenta la babesiosis,a juzgar por los datos obtenidos en los dos años de estudio, puesto que no se observa un aumento de casos en las épocas de primavera y otoño-invierno y una presencia escasa o nula en los meses de julio y agosto, época en la cual hemos observado un mayor nivel de parasitación por garrapatas en los perros. Asimismo se complementa el trabajo con un estudio hemático, bioquímico y de orina en perros diagnosticados de babesiosis y se describen dos casos que murieron en la clínica, diagnosticados de babesiosis, de los cuales se tomaron muestras para estudio histopatológico de hígado, pulmón, corazón, bazo, ganglios linfáticos y riñones.183 cases of babesiosis diagnosed by means of visualization of the parasite in blood smears taken from the ear and dyed with Wright solution, were observed in a Veterinary clinic in Orense (northwest Spain) during the periodJanuary 1,1991 to December 31, 1992. Simultaneously, Ehrlichia canis were observed in 19 cases and in another case Lyme disease was diagnosed by means of indirect immunofluorescence. This paper primarily intends to emphasize the periodicity with which babesiosis appears judging by the data obtained in the two years study, based on an in crease in cases during spring-autumn and winter seasons, and a slight or non existant appearance during the months of July and August, the season in which a higher level of ticks parasitation is observed in dogs. Equally this paper is complemented by hematic, biochemical and urine analyses of the dogs diagnosed with babesiosis as well as the description of two cases, which died in the Hospital, also diagnosed a babesiosis. From these two later cases, we took part of the liver, lung, heart, spleen, lymphatic and kidney for histopathology study

One-dimensional relativistic dissipative system with constant force and its quantization

For a relativistic particle under a constant force and a linear velocity dissipation force, a constant of motion is found. Problems are shown for getting the Hamiltoninan of this system. Thus, the quantization of this system is carried out through the constant of motion and using the quantization of the velocity variable. The dissipative relativistic quantum bouncer is outlined within this quantization approach.Comment: 11 pages, no figure

Dynamical study of spinodal decomposition in heavy ion collisions

Nuclei undergo a phase transition in nuclear reactions according to a caloric curve determined by the amount of entropy. Here, the generation of entropy is studied in relation to the size of the nuclear system.Comment: 4 pages, 2 figures, Contributed paper for the 5th Latin American Symposium on High Energy Physics: V-SILAFAE (2004

Azimuthal dependence of the density distribution in outer galactic discs accreting intergalactic flows

AIMS. The amplitude and scaleheight of the Galactic gas disc density are not axisymmetric against expectations in a self-gravity axisymmetric disc. However, this lopsidedness can be explained in terms of intergalactic accretion flows, which produce non-axisymmetric pressure on the disc. This mechanism could be also responsible for the formation of a warp. METHODS. We analytically derive the relationship between the disc density and the self-gravity and external pressure. RESULTS. The same scenario of accretion as we proposed years ago to explain the formation of the warp explains the azimuthal dependence of the density and its scaleheight, with minimum/maximum in the positions of maximum amplitude of the warp (phi=95 deg. and 275 deg.), as expected from its pressure distribution.Comment: 4 pages, accepted to be published in A&A-letter