Chemical abundances for the transiting planet host stars OGLE-TR-10, 56, 111, 113, 132 and TrES-1. Abundances in different galactic populations

We used the UVES spectrograph (VLT-UT2 telescope) to obtain high-resolution spectra of 6 stars hosting transiting planets, namely for OGLE-TR-10, 56, 111, 113, 132 and TrES-1. The spectra are now used to derive and discuss the chemical abundances for C, O, Na, Mg, Al, Si, S, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Cu and Zn. Abundances were derived in LTE, using 1-D plane-parallel Kurucz model atmospheres. For S, Zn and Cu we used a spectral synthesis procedure, while for the remaining cases the abundances were derived from measurements of line-equivalent widths. The resulting abundances are compared with those found for stars in the solar neighborhood. Distances and galactic coordinates are estimated for the stars. We conclude that besides being particularly metal-rich, with small possible exceptions OGLE-TR-10, 56, 111, 113, 132 and TrES-1 are chemically undistinguishable from the field (thin disk) stars regarding their [X/Fe] abundances. This is particularly relevant for the most distant of the targets, located at up to ~2 Kpc from the Sun. We also did not find any correlation between the abundances and the condensation temperature of the elements, an evidence that strong accretion of planetary-like material, tentatively connected to planetary migration, did not occur.Comment: Accepted for publication in Astronomy & Astrophysics (June 2006

Small Deviations from Gaussianity and The Galaxy Cluster Abundance Evolution

We raise the hypothesis that the density fluctuations field which originates the growth of large scale structures is a combination of two or more distributions. By applying the statistical analysis of finite mixture distributions to a specific combination of Gaussian plus non-Gaussian random fields, we studied the case where just a small departure from Gaussianity is allowed. Our results suggest that even a very small level of non-Gaussianity may introduce significant changes in the cluster abundance evolution rate.Comment: 10 pages with 2 figures, accepted for publication in Ap

Busca de fonte de resistência à Tomato chlorotic mottle virus - ToCMoV e Potato virus Y - PVY em genótipos de berinjela.

Resumo 754-

Effects of atmospherics on emotions and intention with respect to involvement under different shopping environments

The present study deals with the S–O–R framework. The past five decades of research have successful validate the S–O–R model in offline and online contexts. However, there is still room for improvements. In particular, hedonic aspects have been proposed as distinctive aspects to differentiate companies. Previous researchers have (i) been somewhat reluctant to investigate dominance and other emotional responses; and (ii) produced mixed results regarding the impact of atmospherics and emotional responses on behavior. Building on this tradition of research, this study investigates the S-O-R model by incorporating delight as an attitudinal emotional response and tests the moderating effects of consumers’ involvement and shopping environment (three-way interactional effects) in connection with the links among atmospherics, emotions and intentions. The current findings demonstrate that the model fit better for low involvement consumers than for high involvement consumers. This was true for both offline and online environments .The theoretical and practical implications are discussed in the conclusions.info:eu-repo/semantics/acceptedVersio

On the coupling of the self-dual field to dynamical U(1) Matter and its dual theory

We consider an arbitrary U(1) charged matter non-minimally coupled to the self-dual field in $d=2+1$. The coupling includes a linear and a rather general quadratic term in the self-dual field. By using both a Lagragian gauge embedding and a master action approaches we derive the dual Maxwell Chern-Simons type model and show the classical equivalence between the two theories. At quantum level the master action approach in general requires the addition of an awkward extra term to the Maxwell Chern-Simons type theory. Only in the case of a linear coupling in the self-dual field the extra term can be dropped and we are able to establish the quantum equivalence of gauge invariant correlation functions in both theories.Comment: two citations and references corrected, 13 page

Quantum key distribution with higher-order alphabets using spatially-encoded qudits

We propose and demonstrate a quantum key distribution scheme in higher-order $d$-dimensional alphabets using spatial degrees of freedom of photons. Our implementation allows for the transmission of 4.56 bits per sifted photon, while providing improved security: an intercept-resend attack on all photons would induce an error rate of 0.47. Using our system, it should be possible to send more than a byte of information per sifted photon.Comment: 4 pages, 5 figures. Replaced with published versio

Comparação de métodos de cálculo do teor de lipídeos em frutos de tucumã (Astrocaryum vulgare).

Neste momento a agricultura brasileira vê-se frente à necessidade de ampliar e diversificar a produção de óleos vegetais devido a fortes demandas dos mercados de alimentos e biocombustíveis. Em função disto, foi lançado em 2010 o programa PALMA DE ÓLEO com incentivos para a produção de óleo de palma (dendê) na Amazônia e Costa do Dendê na Bahia. Além disso, em função de demandas do governo federal, a Embrapa executa o projeto PROPALMA que tem como objetivos gerar tecnologias para a produção de óleos a partir de palmeiras tais como inajá, babaçu, macaúba e tucumã. Este trabalho teve como objetivo comparar duas formas de determinação do teor de lipídeos em amostra de tucumã visando desenvolver uma metodologia mais rápida para tal determinação. A extração de lipídeos foi efetuada pelo método soxleth e os teores de lipídeos foram determinados a partir da pesagem do óleo extraído nos balões e da pesagem dos cartuchos de amostras após a extração. Os resultados entre estes dois métodos foram comparados e não mostraram diferenças significativas para teores de óleo na faixa de 20% a 50%.PIBIC-2011