198 research outputs found
In situ localization of three cDNA sequences associated with the later stages of aposporic embryo sac development of Brachiaria brizantha.
GID1 expression is associated with ovule development of sexual and apomictic plants.
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Previous issue date: 2018-05-15bitstream/item/176818/1/10.1007-s00299-017-2230-0.pd
Genetic transformation of Brachiaria brizantha cv. Marandu by biolistics.
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GenetictransformationofBrachiariabrizanthacv.pdf: 1969975 bytes, checksum: 15dfa9e19124eb5269852ad139ad19fb (MD5)
Previous issue date: 2018-06-12bitstream/item/178487/1/Genetic-transformation-of-Brachiaria-brizantha-cv-.pd
Avaliação da estrutura dos segmentos basais de Brachiaria brizantha para utilização na transformação genética via biobalística.
bitstream/CENARGEN/29402/1/bp173.pd
Viral reinfection affecting bulb production in garlic after seven years of cultivation under field conditions.
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MeloFilhoetalViralReinfection...2006.pdf: 230271 bytes, checksum: f03196838e7a796b2c3aacb0c8b5ca6a (MD5)
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Viral reinfection affecting bulb production in garlic after seven years of cultivation under field conditions.
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ID278821.pdf: 230271 bytes, checksum: f03196838e7a796b2c3aacb0c8b5ca6a (MD5)
Previous issue date: 2007-01-16bitstream/item/178115/1/ID-27882-1.pd
Energy Relaxation in Nonlinear One-Dimensional Lattices
We study energy relaxation in thermalized one-dimensional nonlinear arrays of
the Fermi-Pasta-Ulam type. The ends of the thermalized systems are placed in
contact with a zero-temperature reservoir via damping forces. Harmonic arrays
relax by sequential phonon decay into the cold reservoir, the lower frequency
modes relaxing first. The relaxation pathway for purely anharmonic arrays
involves the degradation of higher-energy nonlinear modes into lower energy
ones. The lowest energy modes are absorbed by the cold reservoir, but a small
amount of energy is persistently left behind in the array in the form of almost
stationary low-frequency localized modes. Arrays with interactions that contain
both a harmonic and an anharmonic contribution exhibit behavior that involves
the interplay of phonon modes and breather modes. At long times relaxation is
extremely slow due to the spontaneous appearance and persistence of energetic
high-frequency stationary breathers. Breather behavior is further ascertained
by explicitly injecting a localized excitation into the thermalized array and
observing the relaxation behavior
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