Avaliação da pureza genética em sementes de milho utilizando marcadores microssatélites.

bitstream/CNPMS/16183/1/Circ_30.pd

Prevenção e tratamento de doenças dos caprinos.

Apresentação; Algumas orientações sobre as doenças dos caprinos; Como prevenir e tratar as doenças dos caprinos; Umbiqueira; Como evitar a umbigueira; Boqueira; Como tratar a boqueira; Caroço; Como tirar o caroço; Verminose; Como evitar a verminose; Piolhos; Como tratar os piolhos; Caspa do ouvido; Como tratar a caspa do ouvido; Bicheira; Evite a bicheira na criação cuidando sempre das feridas que aparecem nos animais; Bexiga; Cuidados necessários; Outros cuidados para evitar doenças nas criações.bitstream/item/210385/1/Prevencao-e-tratamento-de-doencas-dos-caprinos.pd

Características do perfil empreendedor no desempenho organizacional: o caso da BioClone no Proeta.

Projeto/Plano de Ação: 04.09.02.015

Quantum criticality in inter-band superconductors

In fermionic systems with different types of quasi-particles, attractive interactions can give rise to exotic superconducting states, as pair density wave (PDW) superconductivity and breached pairing. In the last years the search for these new types of ground states in cold atom and in metallic systems has been intense. In the case of metals the different quasi-particles may be the up and down spin bands in an external magnetic field or bands arising from distinct atomic orbitals that coexist at a common Fermi surface. These systems present a complex phase diagram as a function of the difference between the Fermi wave-vectors of the different bands. This can be controlled by external means, varying the density in the two-component cold atom system or, in a metal, by applying an external magnetic field or pressure. Here we study the zero temperature instability of the normal system as the Fermi wave-vectors mismatch of the quasi-particles (bands) is reduced and find a second order quantum phase transition to a PDW superconducting state. From the nature of the quantum critical fluctuations close to the superconducting quantum critical point (SQCP), we obtain its dynamic critical exponent. It turns out to be $z=2$ and this allows to fully characterize the SQCP for dimensions $d \ge 2$.Comment: 5 pages, 1 figur

Asymmetric superconductivity in metallic systems

Different types of superfluid ground states have been investigated in systems of two species of fermions with Fermi surfaces that do not match. This study is relevant for cold atomic systems, condensed matter physics and quark matter. In this paper we consider this problem in the case the fermionic quasi-particles can transmute into one another and only their total number is conserved. We use a BCS approximation to study superconductivity in two-band metallic systems with inter and intra-band interactions. Tuning the hybridization between the bands varies the mismatch of the Fermi surfaces and produces different instabilities. For inter-band attractive interactions we find a first order normal-superconductor and a homogeneous metastable phase with gapless excitations. In the case of intra-band interactions, the transition from the superconductor to the normal state as hybridization increases is continuous and associated with a quantum critical point. The case when both interactions are present is also considered.Comment: new enlarged version, new title, 7 pages, 7 figure

"Fingerprinting" molecular de linhagens de milho.

bitstream/item/25657/1/Com-92.pd