2,271,206 research outputs found

    A Cryptic Non-Inducible Prophage Confers Phage-Immunity on the Streptococcus thermophilus M17PTZA496

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    open9openda Silva Duarte, Vinícius; Giaretta, Sabrina; Campanaro, Stefano; Treu, Laura; Armani, Andrea; Tarrah, Armin; Oliveira de Paula, Sérgio; Giacomini, Alessio; Corich, Vivianada Silva Duarte, Vinícius; Giaretta, Sabrina; Campanaro, Stefano; Treu, Laura; Armani, Andrea; Tarrah, Armin; Oliveira de Paula, Sérgio; Giacomini, Alessio; Corich, Vivian

    Phase ordering and symmetries of the Potts model

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    We have studied the ordering of the q-colours Potts model in two dimensions on a square lattice. On the basis of our observations we propose that if q is large enough the system is not able to break global and local null magnetisation symmetries at zero temperature: when q<4 the system forms domains with a size proportional to the system size while for q>4 it relaxes towards a non-equilibrium phase with energy larger than the ground state energy, in agreement with the previous findings of De Oliveira et al. (M. J. de Oliveira, A. Petri, T. Tome, Europhys. Lett., 65, 20 (2004)).Comment: 6 pages, 3 figures; minor text rewordings and changes in figures styl

    Operational Classification and Quantification of Multipartite Entangled States

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    We formalize and extend an operational multipartite entanglement measure introduced by T. R. Oliveira, G. Rigolin, and M. C. de Oliveira, Phys. Rev. A 73, 010305(R) (2006), through the generalization of global entanglement (GE) [D. A. Meyer and N. R. Wallach, J. Math. Phys. 43, 4273 (2002)]. Contrarily to GE the main feature of this measure lies in the fact that we study the mean linear entropy of all possible partitions of a multipartite system. This allows the construction of an operational multipartite entanglement measure which is able to distinguish among different multipartite entangled states that GE failed to discriminate. Furthermore, it is also maximum at the critical point of the Ising chain in a transverse magnetic field, being thus able to detect a quantum phase transition.Comment: 14 pages, RevTex4, published versio

    Efficacy analysis of parasitic integrated control in buffaloes

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    Parasitic infestations are responsible for economic losses to buffalo farms. Using the scientific support of epidemiological and parasitic studies in this area, the present research aimed to evaluate the efficacy of an integrated control of parasitic disease purposed. The parasitic integrated control provides a schedule for optimize the drugs for parasitic control to reduce the number of treatments, reduce costs and the parasitic infestation impact in animal productions. In the experiment was used a total population of buffaloes reared in a farm located at Minas Gerais State, Brazil. The in the same day the calves, growing males and non lactation animals were treated with doramectin (200 mcg/ kg BW) and the lactation animals were treated with alfa-ciano-3fenoxibenzil-2, 2-dimetil-3-(2,2-diclorovinil)-ciclopropano carboxilaton solution. Calves positive to Eimeria bareillyi and Eimeria bovis oocysts were treated with toltrazuril. The lice population was eradicated and the average numbers of trichostrongylid eggs and Eimeria sp. oocysts were substantially reduced to acceptable account

    ANALYSING FACTORS INFLUENCING INTANGIBLE ASSET DISCLOSURE (STUDY IN SOUTH-EAST ASIA AND AUSTRALIA TELECOMMUNICATION INDUSTRY)

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    This study aims to examine intangible asset voluntary disclosure practices in annual report telecommunication company in South East Asia and Australia. This research sample is 75 telecommunication company at year 2007, 2008 dan 2009. Intangible asset disclosure study consist of three categories; structural capital, relational capital and human capital, based on Oliveira et al. categories. This study using content analysis method in annual report sample companies with index developed by Oliveira et al. as dependent variable. Independent variable which are firm size, leverage, ownership concentration, EBITDA margin, legal system of home country and secrecy accounting value, are analysed as factors influencing intangible asset voluntary disclosure practices. A significant positive relationship was observed between intangible asset voluntary disclosure and firm size and secrecy accounting value. However, leverage, ownership concentration, EBITDA margin and legal system of home country did not influence intangible asset voluntary disclosure practices

    Evidence on the relation between public capital and Government efficiency

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    This paper intends to contribute to the literature by providing empirical evidence on the relation between public capital stock and government efficiency. We present some objective indicators fo government efficiency and explore the mentioned relation. we find a positive and significant relation between both variables that survives the introduction of controls and robustness checking.
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