sequences in molecular phylogenetic trees is consistent with early observations that polychaetes tend to have relatively short branches in such trees, and hence are useful taxa with which to reconstruct gene family evolution. Also it is clear that the traditional molecular model systems for protostomes (e.g. Drosophila melanogaster and Caenorhabditis elegans), which are restricted to the Ecdyso...

genus Podisus, have been reported as natural enemies of many insect pests in North America (McPherson 1980). In Brazil, they have been registered in plantations of Eucalyptus (Zanuncio et al. 1994b), Pinus (Teixeira and Villa 1987), soybean and cotton (Grazia and Hildebrand 1987), coffee (Gravena and Lara 1982), cashew (Silva 1965), passion fruit (Costa Lima 1940), avocado (Fischer and Patel 19...

In order to predict the mechanical behavior of the LHC dipole cold mass in situations such as handling, transport and cool down, a number of important structural parameters are required. The dipole’s flexural rigidity determines entirely the mechanical elastic behavior of the cold mass. Therefore, models of a bent cold mass were created to calculate its rigidity. This paper presents a simplifie...

A new non-simplex active-set method for solving linear programs is presented. This method uses a ‘‘global’’ viewpoint of the problem, it starts without any iteration point and its basic characteristic is that the first feasible point determined by the method is, generally, an optimal solution. The computational results obtained for a range-space implementation are highly encouraging. 2003 Elsev...

Fish otoliths provide a record of age, growth, and environmental influences. In both trout and turbot, spatial chemical investigation of the endolymph surrounding the otolith (sagitta) showed a lack of uniformity. Proteins, [Formula: see text], and Mg2+ were significantly more concentrated in the proximal (facing the macula) than distal zone, whereas the opposite was observed for K+ and total C...

A comparative morphological study was performed on the otolith growth patterns of 11 species of the genus Merluccius. The otolith growth pattern, based on the radius of the ¢rst eight growth increments (GI) from the otolith core, was determined from transverse sections of sagitta otoliths.The structure and periodicity of the GI were identi¢ed based on previous knowledge. Two cluster analyses we...