6,464 research outputs found
Programas de controle das mastites causadas por microrganismos contagiosos e do ambiente
Este trabalho foi elaborado com o objetivo de apresentar os conceitos em que se baseiam os programas de controle da mastite, em uso na maioria das indĂşstrias leiteiras desenvolvidas. Foram abordados os fundamentos dos programas de controle, as caracterĂsticas dos patĂłgenos mais comuns, os fatores relacionados Ă ocorrĂŞncia da doença e a sĂntese do programa de controle. Destina-se prioritariamente a mĂ©dicos veterinários e estudantes, embora outros profissionais e produtores interessados no tema possam tambĂ©m usá-lo.bitstream/item/81916/1/Programas-de-controle-das-mastites.pd
Rinite atrĂłfica dos suĂnos: alternativas de controle.
bitstream/item/59363/1/CUsersPiazzonDocuments3.pd
Controle integrado de mastite bovina.
bitstream/item/132469/1/Livro-Controle-integrado-da-mastite-bovina.pd
Efficiency of Brownian Motors
The efficiency of different types of Brownian motors is calculated
analytically and numerically. We find that motors based on flashing ratchets
present a low efficiency and an unavoidable entropy production. On the other
hand, a certain class of motors based on adiabatically changing potentials,
named reversible ratchets, exhibit a higher efficiency and the entropy
production can be arbitrarily reduced.Comment: LaTeX 209, 6 pages, 7 postscript figures, uses psfi
Homeopatia: uma opção de tratamento da mamite bovina
bitstream/item/82580/1/Homeopatia-uma-opcao.pd
Renormalized Equilibria of a Schloegl Model Lattice Gas
A lattice gas model for Schloegl's second chemical reaction is described and
analyzed. Because the lattice gas does not obey a semi-detailed-balance
condition, the equilibria are non-Gibbsian. In spite of this, a self-consistent
set of equations for the exact homogeneous equilibria are described, using a
generalized cluster-expansion scheme. These equations are solved in the
two-particle BBGKY approximation, and the results are compared to numerical
experiment. It is found that this approximation describes the equilibria far
more accurately than the Boltzmann approximation. It is also found, however,
that spurious solutions to the equilibrium equations appear which can only be
removed by including effects due to three-particle correlations.Comment: 21 pages, REVTe
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