712 research outputs found

    Instruções para a criação do besouro africano Onthophagus gazella em laboratório.

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    Onthophagus gazella; Besouro africano; Criação; Laboratório; Inseto; Entomologia.bitstream/item/138761/1/COT-33.pdfCNPGC

    Desenvolvimento de um programa integrado de controle dos nematodeos e a mosca-dos-chifres, na região dos cerrados. fase 3. potencial de onthophagus gazella no enterrio de fezes bovinas.

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    Onthophagus gazella; Solo; Microbiologia.bitstream/item/137591/1/PESQ-EM-ANDAMENTO-42.pdfCNPGC

    On the Coupling between Helium Settling and Rotation-Induced Mixing in Stellar Radiative Zones: II- Application to light elements in population I main-sequence stars

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    In the two previous papers of this series, we have discussed the importance of t he μ\mu-gradients due to helium settling on rotation-induced mixing, first in a n approximate analytical way, second in a 2D numerical simulation. We have found that, for slowly rotating low mass stars, a process of ``creeping paralysis" in which the circulation and the diffusion are nearly frozen may take place below the convective zone. Here we apply this theory to the case of lithium and beryll ium in galactic clusters and specially the Hyades. We take into account the rota tional braking with rotation velocities adjusted to the present observations. We find that two different cells of meridional circulation appear on the hot side of the "lithium dip" and that the "creeping paralysis" process occurs, not dir ectly below the convective zone, but deeper inside the radiative zone, at the to p of the second cell. As a consequence, the two cells are disconnected, which ma y be the basic reason for the lithium increase with effective temperature on thi s side of the dip. On the cool side, there is just one cell of circulation and t he paralysis has not yet set down at the age of the Hyades; the same modelisatio n accounts nicely for the beryllium observations as well as for the lithium ones .Comment: 13 printed pages, 10 figures. ApJ, in press (April 20, 2003

    Exigências da legislação ambiental para a implantação de agroindústrias.

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    bitstream/item/156626/1/DOC-116-corrigido.pd

    Epidemiologia dos nematódeos gastrintestinais em bovinos de corte nos cerrados e o controle estratégico no Brasil.

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    Prevalência das espécies. OPG e imunidade adquirida. Larvas na pastagem. Hipobiose. Mortalidade de animais. Integração entre os helmintos do abomaso. Anorexia. Faixa etária, prejuízos e controle. Custo/Benefício.bitstream/item/104809/1/Epidemiologia-dos-nematoideos-gastrintestinais.pd

    Gauge Invariant Effective Potential for Abelian Maxwell-Chern-Simons Systems

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    We investigate the effective potential for Abelian Maxwell--Chern--Simons systems. The calculations follow an alternate approach, recently proposed as a gauge invariant formulation of the effective potential, constructed in terms of a gauge invariant order parameter. We compare the results with another investigation, obtained within a standard route of calculating the effective potential.Comment: 10 pages. Revtex. To appear in Phys. Rev.

    Gauge Invariance in Chern-Simons Systems

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    We show explicitly that the question of gauge invariance of the effective potential in standard scalar electrodynamics remains unchanged despite the introduction of the Chern-Simons term. The result does not depend on the presence of the Maxwell term in the Chern-Simons territory.Comment: 10 pages, Plain Tex, DF/UFPB-14/9
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