284 research outputs found
Síndrome De Transfusão Feto-fetal: Neurodesenvolvimento De Lactentes Tratados Com Cirurgia A Laser
To assess the neurodevelopmental functions of survivors of twin-twin transfusion syndrome (TTTS) treated by fetoscopic laser coagulation (FLC), during the first year of life, comparing them to a control group; and to verify the influence of specific variables on neurodevelopment. Method: This was a prospective, longitudinal study. The sample comprised 33 monochorionic diamniotic twins who underwent FLC for treatment of TTTS and 22 full-term infants of single-fetus pregnancies. Bayley Scales of Infant and Toddler Development Screening Test were used for evaluation. Prenatal, perinatal and postnatal information were obtained. Results: There was an increased frequency of infants in the TTTS group with inadequate performance compared to the control group. The identified variables (fetal donor, low economic income and cardiorespiratory disease) negatively impacted expressive communication and fine motor skills. Conclusion: Although through follow-up is recommended in all TTTS survivors, particular attention is required for the high-risk group as defined in this study. © 2016, Associacao Arquivos de Neuro-Psiquiatria. All rights reserved.74430731
DEGRADABILIDADE in vitro DA PROTEÍNA DE ESPÉCIES ARBÓREAS DO SEMI-ÁRIDO BRASILEIRO
This experiment was carried out to
evaluate the protein degradability in vitro of arboreal
plants from Brazilian semi-arid. The plants tested were
angico (Anadenanthera colubrina), algaroba (Prosopis
juliflora), espinheiro (Acacia glomerosa), juazeiro
(Ziziphus joazeiro) and soybean meal, which had crude
protein values of 22,5 16,0, 22,0, 19,0 and 38,0%,
respectively. Samples (60 mg) were incubated with
McDougal (8 ml) and inoculated ruminal fluid (2 ml).
Aliquots (1 ml) were taking after 0, 6, 12, 24, 36 and 48
hours for analysis of ammonia, soluble protein and
microbial protein. Soybean meal and the algaroba
showed larger ammonia production and concentration
of soluble protein compared to the other treatments.
Soybean meal also displayed higher values for microbial
protein. The treatment with angico was the one that
displayed closed values towards soybean in regard to
microbial protein, in spite of showing lesser ammonia
production. The largest value of potential degradability
66,47%, was observed for the treatment with soybean
meal, followed by the algaroba 46,27% and of the angico
45,20. Very low degradability was observed for the
espinheiro and juazeiro, 19,16 e16,63%, respectively.
Among the studied plants the angico and the algaroba
were better sources of protein.O experimento teve como objetivo avaliar
a degradabilidade in vitro da proteína de plantas
arbóreas do semi-árido brasileiro e do farelo de soja.
As plantas utilizadas foram angico (Anadenanthera
colubrina), algaroba (Prosopis juliflora), espinheiro
(Acacia glomerosa), juazeiro (Ziziphus joazeiro) e o
farelo de soja, com valores de proteína bruta de 22,5
16,0, 22,0, 19,0 e 38,0%, respectivamente. Amostras
de cada planta (60 mg) foram incubadas em 8 ml de
meio tampão de McDougal, com adição de 2 ml de
inóculo ruminal. Nos tempos 0, 6, 12, 24, 36 e 48 horas
após a incubação foi retirada uma alíquota de 1,0 ml
para análise de amônia, proteína solúvel e proteína
microbiana. O farelo de soja e a algaroba
proporcionaram maiores produção de amônia e
concentração de proteína solúvel em relação aos outros
alimentos, sendo que o farelo de soja apresentou maior
valor de proteína microbiana. O tratamento com o
angico foi o que mais se aproximou à soja com relação
ao valor de proteína microbiana, apesar da sua menor
produção de amônia. O maior valor de degradabilidade
potencial 66,47 %, foi observado no tratamento com
farelo de soja, seguidos dos tratamentos da algaroba
46,27% e angico 45,20%. Foram observados valores
de degradabilidade muito baixos para o espinheiro e
juazeiro, 19,16 e 16,63%, respectivamente. O angico e
a algaroba apresentaram-se como melhores fontes de
proteína entre as plantas avaliadas
Numerical simulation of strongly nonlinear and dispersive waves using a Green-Naghdi model
We investigate here the ability of a Green-Naghdi model to reproduce strongly
nonlinear and dispersive wave propagation. We test in particular the behavior
of the new hybrid finite-volume and finite-difference splitting approach
recently developed by the authors and collaborators on the challenging
benchmark of waves propagating over a submerged bar. Such a configuration
requires a model with very good dispersive properties, because of the
high-order harmonics generated by topography-induced nonlinear interactions. We
thus depart from the aforementioned work and choose to use a new Green-Naghdi
system with improved frequency dispersion characteristics. The absence of dry
areas also allows us to improve the treatment of the hyperbolic part of the
equations. This leads to very satisfying results for the demanding benchmarks
under consideration
Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth ages
Microbial and fermentation profiles, losses and chemical composition of silages of buffel grass harvested at different cutting heights
Consistency analysis of a nonbirefringent Lorentz-violating planar model
In this work analyze the physical consistency of a nonbirefringent
Lorentz-violating planar model via the analysis of the pole structure of its
Feynman propagators. The nonbirefringent planar model, obtained from the
dimensional reduction of the CPT-even gauge sector of the standard model
extension, is composed of a gauge and a scalar fields, being affected by
Lorentz-violating (LIV) coefficients encoded in the symmetric tensor
. The propagator of the gauge field is explicitly evaluated
and expressed in terms of linear independent symmetric tensors, presenting only
one physical mode. The same holds for the scalar propagator. A consistency
analysis is performed based on the poles of the propagators. The isotropic
parity-even sector is stable, causal and unitary mode for .
On the other hand, the anisotropic sector is stable and unitary but in general
noncausal. Finally, it is shown that this planar model interacting with a
Higgs field supports compactlike vortex configurations.Comment: 11 pages, revtex style, final revised versio
Measurements of long-range near-side angular correlations in TeV proton-lead collisions in the forward region
Two-particle angular correlations are studied in proton-lead collisions at a
nucleon-nucleon centre-of-mass energy of TeV, collected
with the LHCb detector at the LHC. The analysis is based on data recorded in
two beam configurations, in which either the direction of the proton or that of
the lead ion is analysed. The correlations are measured in the laboratory
system as a function of relative pseudorapidity, , and relative
azimuthal angle, , for events in different classes of event
activity and for different bins of particle transverse momentum. In
high-activity events a long-range correlation on the near side, , is observed in the pseudorapidity range . This
measurement of long-range correlations on the near side in proton-lead
collisions extends previous observations into the forward region up to
. The correlation increases with growing event activity and is found
to be more pronounced in the direction of the lead beam. However, the
correlation in the direction of the lead and proton beams are found to be
compatible when comparing events with similar absolute activity in the
direction analysed.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-040.htm
Study of the production of and hadrons in collisions and first measurement of the branching fraction
The product of the () differential production
cross-section and the branching fraction of the decay () is
measured as a function of the beauty hadron transverse momentum, ,
and rapidity, . The kinematic region of the measurements is and . The measurements use a data sample
corresponding to an integrated luminosity of collected by the
LHCb detector in collisions at centre-of-mass energies in 2011 and in 2012. Based on previous LHCb
results of the fragmentation fraction ratio, , the
branching fraction of the decay is
measured to be \begin{equation*} \mathcal{B}(\Lambda_b^0\rightarrow J/\psi
pK^-)= (3.17\pm0.04\pm0.07\pm0.34^{+0.45}_{-0.28})\times10^{-4},
\end{equation*} where the first uncertainty is statistical, the second is
systematic, the third is due to the uncertainty on the branching fraction of
the decay , and the
fourth is due to the knowledge of . The sum of the
asymmetries in the production and decay between and
is also measured as a function of and .
The previously published branching fraction of , relative to that of , is updated.
The branching fractions of are determined.Comment: 29 pages, 19figures. All figures and tables, along with any
supplementary material and additional information, are available at
https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-032.htm
Evidence for the strangeness-changing weak decay
Using a collision data sample corresponding to an integrated luminosity
of 3.0~fb, collected by the LHCb detector, we present the first search
for the strangeness-changing weak decay . No
hadron decay of this type has been seen before. A signal for this decay,
corresponding to a significance of 3.2 standard deviations, is reported. The
relative rate is measured to be
, where and
are the and fragmentation
fractions, and is the branching
fraction. Assuming is bounded between 0.1 and
0.3, the branching fraction would lie
in the range from to .Comment: 7 pages, 2 figures, All figures and tables, along with any
supplementary material and additional information, are available at
https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-047.htm
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