2,803 research outputs found
Perfect category-graded algebras
In a perfect category every object has a minimal projective resolution. We
give a criterion for the category of modules over a categorygraded algebra to
be perfect.Comment: A sufficient condition is replaced by a criterion. Several references
added. 17 page
Renormalized coordinate approach to the thermalization process
We consider a particle in the harmonic approximation coupled linearly to an
environment. modeled by an infinite set of harmonic oscillators. The system
(particle--environment) is considered in a cavity at thermal equilibrium. We
employ the recently introduced notion of renormalized coordinates to
investigate the time evolution of the particle occupation number. For
comparison we first present this study in bare coordinates. For a long ellapsed
time, in both approaches, the occupation number of the particle becomes
independent of its initial value. The value of ocupation number of the particle
is the physically expected one at the given temperature. So we have a Markovian
process, describing the particle thermalization with the environment. With
renormalized coordinates no renormalization procedure is required, leading
directly to a finite result.Comment: 16 pages, LATEX, 2 figure
Avaliação do teor de inibidor de tripsina de kunitz e de isoflavonas em grãos de soja germinados da cultivar BRS 213.
Determinação do inibidor de tripsina de kunitz em soja crua e tratada de cultivares brasileiras.
Produção animal em sistema intensivo de pastagens de Panicum maximum cv. Tânzania.
O objetivo foi avaliar os ganhos de peso por animal e por área em pastos de capim-tanzânia no perÃodo das águas, sob dois nÃveis de fertilidade (NFB V% = 40-50, P = 4-8 mg/l e K = 60-80 mg/l e NFA V% = 50-70, P = 8-12 mg/l e K = 80-100 mg/l) e dois nÃveis de adubação nitrogenada (150 e 300 kg de N/ha/ano)
- …