715 research outputs found
Efeito da doença "enfezamento vermelho" em caracteres agronômicos do milho (Zea mays L.) cultivado sob diferentes sistemas no município de Itumbiara, Goiás.
Smooth tensionful higher-codimensional brane worlds with bulk and brane form fields
Completely regular tensionful codimension-n brane world solutions are
discussed, where the core of the brane is chosen to be a thin codimension-(n-1)
shell in an infinite volume flat bulk, and an Einstein-Hilbert term localized
on the brane is included (Dvali-Gabadadze-Porrati models). In order to support
such localized sources we enrich the vacuum structure of the brane by the
inclusion of localized form fields. We find that phenomenological constraints
on the size of the internal core seem to impose an upper bound to the brane
tension. Finite transverse-volume smooth solutions are also discussed.Comment: 1+14 pages, 2 figures; section 2.3 improved, typos corrected and
references added. Published versio
Comportamento interfacial de compósitos de poli(Tereftalato de Etileno) reciclado (PETr) com fibras de bagaço de cana.
bitstream/CNPDIA-2009-09/11893/1/CT96_2008.pd
Extração e caracterização da fibra de camalote (Eichhornia crassipes (Mart)) proveniente do pantanal.
Extração e caracterização de fibras de tucum (Bactris glaucescens drude) provenientes do pantanal.
Interfacial behaviour of composites of recycled poly(ethylene terephthalate) and sugar cane bagase fibers.
Localized gravity and mass hierarchy in D=6 with the Gauss-Bonnet term
We obtain the localized gravity on the intersection of two orthogonal
non-solitonic or solitonic 4-branes in D=6 in the presence of the Gauss-Bonnet
term. The tension of the intersection is allowed to exist unlike the case
without the Gauss-Bonnet term. We show that gravity could be confined to the
solitonic 4-branes for a particular choice of the Gauss-Bonnet coupling. If the
extra dimensions are compactified with the orbifold
symmetry, the mass hierarchy between the Planck scale and the weak scale can be
explained by putting our universe at the TeV intersection of positive tension
located at the orbifold fixed point.Comment: Latex file of 12 page
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