Two new species of Xestoblatta from northern Brazil are described, Xestoblatta buhrnheimi sp. n. and Xestoblatta rondonensis sp. n., included in the buscki group Gurney (1939), and new characters are added to the description of Xestoblatta mamorensis Lopes & Oliveira, 2006. Xestoblatta roppai Rocha e Albuquerque-Silva & Fraga, 1975, from midwestern Brazil is redescribed, including its genital c...

With the aging of the population, it is important to identify how other age groups perceive the elderly. The objective of this quantitative, cross-sectional and descriptive study was to evaluate the attitude of children living with seniors toward aging. Interviews were conducted with 54 children, aged between seven and ten years old, living with elderly people. After sociodemographic data were ...

We compare different procedures for combining fixed-order tree-level matrixelement generators with parton showers. We use the case of W-production at the Tevatron and the LHC to compare different implementations of the so-called CKKW and MLM schemes using different matrix-element generators and different parton cascades. We find that although similar results are obtained in all cases, there are...

We present here a study of event generators for the hadronic production of Wγ . We compare a NLO Wγ matrix element generator with the leading order calculation in Pythia . A matching scheme between a next-to-leading order Wγ matrix element generator by Baur et. al. and the Pythia parton shower is presented. The NLO package produces Wγ +0 jet and Wγ +1jet final states in the hard scattering and ...