Para entender Micorrizas Asbusculares.

bitstream/CNPA/18310/1/DOC156.pd

Marcadores moleculares como ferramentas para estudos de genética de plantas.

bitstream/CNPA/18326/1/DOC147.pd

Métodos de predição do comportamento de populações de melhoramento.

Algodão; Melhoramento genéticobitstream/CNPA/19713/1/DOC108.PD

Strong spin-orbit splitting on Bi surfaces

Using first-principles calculations and angle-resolved photoemission, we show that the spin-orbit interaction leads to a strong splitting of the surface state bands on low-index surfaces of Bi. The dispersion of the states and the corresponding Fermi surfaces are profoundly modified in the whole surface Brillouin zone. We discuss the implications of these findings with respect to a proposed surface charge density wave on Bi(111) as well as to the surface screening, surface spin-density waves, electron (hole) dynamics in surface states, and to possible applications to the spintronics.Comment: 4 pages 2 figure

Aplicabilidade de marcadores SSR em estudos genéticos em Gossypium Mustelinun Miers.

bitstream/CNPA/20279/1/COMTEC345.pd

Optical spin pumping of modulation doped electrons probed by a two-color Kerr rotation technique

We report on optical spin pumping of modulation electrons in CdTe-based quantum wells with low intrinsic electron density (by 10^10 cm^{-2}). Under continuous wave excitation, we reach a steady state accumulated spin density of about 10^8 cm^{-2}. Using a two-color Hanle-MOKE technique, we find a spin relaxation time of 34 ns for the localized electrons in the nearly unperturbed electron gas. Independent variation of the pump and probe energies demonstrates the presence of additional non-localized electrons in the quantum well, whose spin relaxation time is substantially shorter