ABSTRACT
O objetivo deste estudo foi avaliar a ocorrência da infecção pelo vírus Maedi-Visna em ovinos criados nas microrregiões de Botucatu, Campinas, Piedade e São Paulo do Estado de São Paulo. As amostras de soro sanguíneo foram colhidas de 226 ovinos e foi realizada a técnica de imunodifusão em gel de ágar para a detecção de anticorpos antivírus Maedi-Visna e verificou-se que nenhuma das amostras testadas foi sororeagente. Dessa forma, faz-se necessário um estudo mais amplo no estado, a fim de se confirmar a baixa ocorrência e importância da enfermidade no estado.
Survey for antibodies against maedi-visna virus in sheep in the regions of Botucatu, Campinas, São Paulo and Piedade, state of São Paulo, Brazil. The purpose of the study was to evaluate the occurrence of infection with maedi-visna virus in sheep raised in the regions of Botucatu, Campinas, Piedade and São Paulo, state of São Paulo, Brazil, that showed symptoms of the disease. Blood serum samples collected from 226 sheep were submitted to the agar gel immunodiffusion technique for detection of antibodies against maedi-visna virus, and none of the samples tested was serum reactive. In conclusion, the maedi-visna virus has low frequency in animals raised in the regions studied.
Subject(s)
Animals , Infections/microbiology , Lentivirus/pathogenicity , Virology , SheepABSTRACT
The potency and versatility of a numerical procedure based on the generalized multipole technique (GMT) are demonstrated in the context of full-vector electromagnetic interactions for general incidence on arbitrarily shaped, geometrically composite, highly elongated, axisymmetric perfectly conducting or dielectric objects of large size parameters and arbitrary constitutive parameters. Representative computations that verify the accuracy of the technique are given for a large category of problems that have not been considered previously by the use of the GMT, to our knowledge. These problems involve spheroids of axial ratios as high as 20 and with the largest dimension of the dielectric object along the symmetry axis equal to 75 wavelengths; sphere-cone-sphere geometries; peanut-shaped scatterers; and finite-length cylinders with hemispherical, spherical, and flat end caps. Whenever possible, the extended boundary-condition method has been used in the process of examining the applicability of the suggested solution, with excellent agreement being achieved in all cases considered. It is believed that the numerical-scattering results presented here represent the largest detailed three-dimensional precise modeling ever verified as far as expansion functions that fulfill Maxwell's equations throughout the relevant domain of interest are concerned.
