4,338 research outputs found
CMF 056: genótipo de mamoeiro com potencial para cultivo no Ceará.
Disponivel no site da Embrapa Agroindustria Tropical
Avaliação de genótipos de feijão-de-corda sob infecção simultânea por "cowpea aphid-borne mosaic virus" e "cucumber mosaic virus".
Avaliacao genotipos feijao-de-corda sob infeccao simultanea;tem se intensificado, no Estado do Ceara, a infeccao simultanea em feijao-de-corda, Vigna unguiculata(L.)Walp., pelo Potyvirus CpAMV e pelo Cucumovirus CMV, que afetam drasticamente o rendimento da cultura nas principaisregioes produtoras.Visando solucionar o problema, executou-se um trabalho em campo no municipio de Brejo Santo, CE; adotou-se o delineamentoem blocos completos casualizados com quatro repeticoes;coletaram-se amostras de plantas infectadas de cada parcela para exame em laboratorioe os dados para as variaveis...bitstream/CNPAT-2010/4777/1/Bp-025.pd
Desempenho de linhagens de feijão-de-corda sob condição de sequeiro.
Desempenho de linhagens de feijao-de-corda sob condicao de sequeirabitstream/CNPAT-2010/5402/1/Pa-050.pd
Equation of state and transport processes in self--similar spheres
We study the effect of transport processes (diffusion and free--streaming) on
a collapsing spherically symmetric distribution of matter in a self--similar
space--time. A very simple solution shows interesting features when it is
matched with the Vaidya exterior solution. In the mixed case (diffusion and
free--streaming), we find a barotropic equation of state in the stationary
regime. In the diffusion approximation the gravitational potential at the
surface is always constant; if we perturb the stationary state, the system is
very stable, recovering the barotropic equation of state as time progresses. In
the free--streaming case the self--similar evolution is stationary but with a
non--barotropic equation of state.Comment: 9 pages, 2 figure
Identificacao de fontes de resistencia a xanthomonas vignicola, agente causal da mancha bacteriana do Caupi.
Abstract; Introducao; Material e Metodos; Resultados e Discussao; Conclusoes.bitstream/CNPAT-2010/6362/1/Bp-028.pd
More Discriminants with the Brezing-Weng Method
The Brezing-Weng method is a general framework to generate families of
pairing-friendly elliptic curves. Here, we introduce an improvement which can
be used to generate more curves with larger discriminants. Apart from the
number of curves this yields, it provides an easy way to avoid endomorphism
rings with small class number
Reação de genótipos de feijão-de-corda ao ataque da cigarrinha-verde, no Estado do Ceará.
Abstract; Introducao; Material e metodos; Resultados e discussao; Conclusoes.bitstream/CNPAT-2010/6363/1/Bp-030.pd
Production of Charged Higgs Bosons in a 3-3-1 Model at the CERN LHC
We perform a study of the charged Higgs production from an model with right-handed neutrinos, postulating a
custodial symmetry which reduces the number of free parameters in the scalar
potential. We compute the cross sections for charged scalars for typical and
new production modes. One of the new neutral gauge bosons,
, affects some production cross sections distinguishing the model
from other Standard Model extensions like, for example, the Minimal
Supersymmetric Standard Model and general two Higgs doublets models. The
interplay between the Higgs sector of the model and that gauge
boson enhances substantialy all the production rates of the lightest charged
Higgs boson, , at hadron colliders compared to the MSSM. We found
that a large portion of the parameters space can be probed at the LHC running
at 14 TeV center-of-mass energy in the associated production channel in the low luminosity run stage of the
experiment.Comment: 30 pages, 20 figures, accepted for publication in Phys. Rev.
Self-similar and charged spheres in the diffusion approximation
We study spherical, charged and self--similar distributions of matter in the
diffusion approximation. We propose a simple, dynamic but physically meaningful
solution. For such a solution we obtain a model in which the distribution
becomes static and changes to dust. The collapse is halted with damped mass
oscillations about the absolute value of the total charge.Comment: 15 pages, 7 figure
The Kinematically Measured Pattern Speeds of NGC 2523 and NGC 4245
We have applied the Tremaine-Weinberg continuity equation method to derive
the bar pattern speed in the SB(r)b galaxy NGC 2523 and the SB(r)0/a galaxy NGC
4245 using the Calcium Triplet absorption lines. These galaxies were selected
because they have strong inner rings which can be used as independent tracers
of the pattern speed. The pattern speed of NGC 2523 is 26.4 6.1 km
s kpc, assuming an inclination of 49.7 and a distance
of 51.0 Mpc. The pattern speed of NGC 4245 is 75.5 31.3 km s
kpc, assuming an inclination of 35.4 and a distance of 12.6
Mpc. The ratio of the corotation radius to the bar radius of NGC 2523 and NGC
4245 is 1.4 0.3 and 1.1 0.5, respectively. These values place the
bright inner rings near and slightly inside the corotation radius, as predicted
by barred galaxy theory. Within the uncertainties, both galaxies are found to
have fast bars that likely indicate dark halos of low central concentration.
The photometric properties, bar strengths, and disk stabilities of both
galaxies are also discussed.Comment: Accepted for publication in The Astronomical Journal, 11 figures, 2
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