Predição de estruturas e modelagem molecular de BIP (Binding Protein da soja (Glycine max L. (Merrill) usando biologia computacional.

xSuplemento. Edição dos resumos do 43º Congresso Nacional de Genética

Produtividade de cultivares de soja em função do manejo do solo na reforma do canavial.

JIPE 2013

Scalar models for the generalized Chaplygin gas and the structure formation constraints

The generalized Chaplygin gas model represents an attempt to unify dark matter and dark energy. It is characterized by a fluid with an equation of state $p = - A/\rho^\alpha$. It can be obtained from a generalization of the DBI action for a scalar, tachyonic field. At background level, this model gives very good results, but it suffers from many drawbacks at perturbative level. We show that, while for background analysis it is possible to consider any value for $\alpha$, the perturbative analysis must be restricted to positive values of $\alpha$. This restriction can be circumvented if the origin of the generalized Chaplygin gas is traced back to a self-interacting scalar field, instead of the DBI action. But, in doing so, the predictions coming from formation of large scale structures reduce the generalized Chaplygin gas model to a kind of quintessence model, and the unification scenario is lost, if the scalar field is the canonical one. However, if the unification condition is imposed from the beginning as a prior, the model may remain competitive. More interesting results, concerning the unification program, are obtained if a non-canonical self-interacting scalar field, inspired by Rastall's theory of gravity, is imposed. In this case, an agreement with the background tests is possible.Comment: Latex file, 25 pages, 33 figures in eps format. New section on scalar models. Accepted for publication in Gravitation&Cosmolog

Mineralogia e química de um Latossolo câmbico desenvolvido de rocha pelítica do grupo Bambuí, MG.

Foram realizados analises quimica e mineralogica das fracoes argila e silte de amostras de um perfil de solo com tres camadas distintas: uma superficies xantizada, uma camada de subsuperficie vermelha e um horizonte C apresentado variegados amarelos e vermelhos. Os minerais de maior ocorrencia sao caulinita, mica/vermiculita e goethita. A cor do solo esta relacionada a proporcao hematita/goethita (determinada pela espectroscopia Mossbauer). A substituicao isomorfica de ferro por aluminio na goethita aumenta uniformemente, de 20 a 40 mol%, da base para o topo de perfil; SiO2 decresce uniformemente e ha, ainda, uma tendencia de o Fe 2+ ser continuamente oxidado, na medida em que mica se transforma em vermiculita. O aparecimento de hematita na camada vermelha nao pode ser explicado quantitativamente pela hipotese de que os silicatos sejam a unica fonte de ferro, a menos que haja uma consideravel reducao de volume de camada siltosa amarela do horizonte C para as camadas vermelhas do horizonte B. Os dados sugerem uma transformacao reversivel goethita hematita, em resposta as condicoes ambientais

Production and quality of forage cane based on variety, row spacing and time of harvest.

The aim of the current study was to evaluate the productivity of biomass and the bromatologics attributes of two sugar cane varieties, distance between planting, and time of harvest. The experiment was conducted in Presidente Prudente in the state of São Paulo (Brazil). A randomized complete block design, with split sub sub-division, was used. In the plots were installed planting spacings of 1.0 and 1.5 m, in the sub-plots IAC 862480 and RB867515 varieties, and sub sub-plots to harvest three times (180, 270 and 360 days). Variety IAC862480 was higher compared to RB867515 tillering, the spacing of 1.5 m better than 1.0 m. Productivity and the percentage yield of dry matter was higher in variety RB867515 harvested 360 days after planting. Spacing of 1.0 m for variety RB867515 resulted in greater productivity compared to the other variety and spacings evaluated. Crude protein, ash, neutral detergent fiber, acid detergent fiber, total digestible nutrients and degrees Brix suffered interference of the date cutting sugarcane, with increased in the values

Effect of water supply and sowing dates on corn yield of hybrids grown during offseason.

This study aimed to evaluate the effect of water supply and sowing time on yield and yield components of two corn hybrids grown during offseason in the region of Dourados- MS, Brazil. The experimental design was randomized blocks in sub-divided plots, with four replications. In the main plot, two sowing dates were defined (2013 crop year: February 27 and March 27; and 2014 crop year: March 18 and April 5). In subplots, irrigation management systems were defined (irrigated and rainfed). Hybrids AS 1555 and AS 1590 were grown in the sub-plots. The parameters evaluated were plant height, ear insertion height, stem diameter, ear length and diameter, 100-grain weight, and grain yield. Regardless of irrigation and hybrid used, sowing time significantly affected corn yield, which responded to climate changes throughout crop cycle. Water supply increased corn yield, with the highest value being of 9338 kg ha-1 (156 bags ha-1) and obtained when irrigated AS 1555 hybrid was sown on February 27, 2013

Multiplicity dependence of jet-like two-particle correlations in p-Pb collisions at sNN\sqrt{s_{NN}} = 5.02 TeV

Two-particle angular correlations between unidentified charged trigger and associated particles are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV. The transverse-momentum range 0.7 $< p_{\rm{T}, assoc} < p_{\rm{T}, trig} <$ 5.0 GeV/$c$ is examined, to include correlations induced by jets originating from low momen\-tum-transfer scatterings (minijets). The correlations expressed as associated yield per trigger particle are obtained in the pseudorapidity range $|\eta|<0.9$. The near-side long-range pseudorapidity correlations observed in high-multiplicity p-Pb collisions are subtracted from both near-side short-range and away-side correlations in order to remove the non-jet-like components. The yields in the jet-like peaks are found to be invariant with event multiplicity with the exception of events with low multiplicity. This invariance is consistent with the particles being produced via the incoherent fragmentation of multiple parton--parton scatterings, while the yield related to the previously observed ridge structures is not jet-related. The number of uncorrelated sources of particle production is found to increase linearly with multiplicity, suggesting no saturation of the number of multi-parton interactions even in the highest multiplicity p-Pb collisions. Further, the number scales in the intermediate multiplicity region with the number of binary nucleon-nucleon collisions estimated with a Glauber Monte-Carlo simulation.Comment: 23 pages, 6 captioned figures, 1 table, authors from page 17, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/161