772 research outputs found
Efetividade de fixação de nitrogênio de estirpes nativas de rizobio associadas a Arachis pintoi isoladas de solos de cerrado.
Metabolic engineering of fatty acids from soybean seeds.
Edição do Congress of the Brazilian Biotechnology Society, Florianópolis, 2013
Expression, purification and analysis of the anti-HIV Cyanovirin-N produced in transgenic soybeans seeds.
Edição do Congress of the Brazilian Biotechnology Society, Florianópolis, 2013
Recombinant proteins in plants.
Edição do Congress of the Brazilian Biotechnology Society, Florianópolis, 2013
The Role of Heating and Enrichment in Galaxy Formation
We show that the winds identified with high-redshift low-mass galaxies may
strongly affect the formation of stars in more massive galaxies that form
later. With 3D realizations of a simple linear growth model we track gas
shocking, metal enrichment, and cooling, together with dark halo formation. We
show that outflows typically strip baryonic material out of collapsing
intermediate mass halos, suppressing star formation. More massive halos can
trap the heated gas but collapse late, leading to a broad bimodal redshift
distribution, with a larger characteristic mass associated with the lower
redshift peak. This scenario accounts for the observed bell-shaped luminosity
function of early type galaxies, explains the small number of Milky Way
satellite galaxies relative to Cold Dark Matter models predictions, and
provides a possible explanation for the lack of metal poor G-dwarfs in the
solar neighborhood and the more general lack of low-metallicity stars in
massive galaxies relative to ``closed-box'' models of chemical enrichment.
Intergalactic medium heating from outflows should produce spectral distortions
in the cosmic microwave background that will be measurable with the next
generation of experiments.Comment: 19 pages, 12 figures, accepted to ApJ, models refined and minor
revisions mad
Diferentes volumes e tempos de centrifugação do gradiente de percoll não afetam a qualidade espermática e o desenvolvimento embrionário de embriões bovinos produzidos in vitro.
Partial resistance to Bean golden mosaic virus in a transgenic common bean (Phaseolus vulgaris L.) line expressing a mutated rep gene.
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