100 research outputs found
RNAi: uma estratégia a ser explorada para a indução de resistência a viroses em tomateiro.
bitstream/item/152688/1/edicao20-inoueNagata.pd
Dinâmica populacional da mosca-branca, Bemisia tabaci Gennadius, 1889 (Hemiptera: Aleyrodidae), em tomate plantado sob sistema de cultivo orgânico e convencional.
siRNA biogenesis and advances in topically applied dsRNA for controlling virus infections in tomato plants.
this study provides critical information for the development of novel tools against plant viruses; strengths and limitations inherent to the systems are discussed
Dinâmica populacional da mosca-branca, Bemisia tabaci Gennadius, 1889 (Hemiptera:Aleyrodidae), em tomate plantado sob sistema de cultivo orgânico e convencional.
bitstream/CENARGEN/29380/1/bp164.pd
Magnetic properties of the distorted diamond chain at T=0
We explore, at T=0, the magnetic properties of the antiferromagnetic
distorted diamond chain described by the Hamiltonian {\cal H}
= \sum_{j=1}^{N/3}{J_1 ({\bi S}_{3j-1} \cdot {\bi S}_{3j}
+ {\bi S}_{3j} \cdot {\bi S}_{3j+1})
+ J_2 {\bi S}_{3j+1} \cdot {\bi S}_{3j+2}
+ J_3 ({\bi S}_{3j-2} \cdot {\bi S}_{3j}
+ {\bi S}_{3j} \cdot {\bi S}_{3j+2})}
\allowbreak - H \sum_{l=1}^{N} S_l^z with , which well
models with , and azurite . We employ the physical
consideration, the degenerate perturbation theory, the level spectroscopy
analysis of the numerical diagonalization data obtained by the Lanczos method
and also the density matrix renormalization group (DMRG) method. We investigate
the mechanisms of the magnetization plateaux at and , and
also show the precise phase diagrams on the plane
concerning with these magnetization plateaux, where
and is the saturation magnetization. We also calculate the magnetization
curves and the magnetization phase diagrams by means of the DMRG method.Comment: 21 pages, 29 figure
Physicochemical and toxicity investigation of chitosan-based dsRNA nanocarrier formation.
Thus, the present study is focused on the chitosan-dsRNA interactions and the physicochemical properties of the dsRNA-loaded nanoparticles, including cytotoxicity and hemolysis assays. dsRNA molecules homologous to a partial genome of the phytopathogenic tomato mosaic virus (ToMV) were used as the model virus. The combination of chitosan's antimicrobial properties and its delivery capability provides a potential for ds-RNA-nanoparticles to deliver dsRNA as a tool for virus disease control in crops
Staggered dimer order in S=1/2 quantum spin ladder system with four spin exchange
We study the S=1/2 quantum spin ladder system with the four-spin exchange,
using density matrix renormalization group method and an exact diagonalization
method. Recently, the phase transition in this system and its universality
class are studied. But there remain controversies whether the phase transition
is second order type or the other type and the nature of order parameter. There
are arguments that the massless phase appears. But this does not agree with our
previous result. Analyzing DMRG data, we try a new approach in order to
determine a phase which appears after the phase transition. We find that the
edge state appears in the open boundary condition, investigating excitation
energies of states with higher magnetizations.Comment: Submitted to Phys. Rev. B, (REVTeX4
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