The Xenopus laevis alpha-tropomyosin (TM) gene, like its vertebrates counterparts, encodes muscle and non-muscle isoforms through two promoters and alternatively spliced exons. In the present study we describe a cDNA clone (XTMalpha7) encoding a skeletal muscle isoform of the gene that differs from the previously described skeletal TM transcript (XTMalpha2) by its 3'UTR sequence. The two skelet...

As a foundation for the definition of bidirectional protocol mappings between the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP), this document specifies the architectural assumptions underlying such mappings as well as the mapping of addresses and error conditions.

Contaminated sediment management is complex and multivariate, involving a careful balance of science, politics and economics. As is true for most such complex issues, there is not a single correct way to address a problem, but rather the approach should be driven by the ecological, political and economic goals of all interested parties. However, because the choices made have far-reaching implic...

Ribosomal RNA (rRNA) genes, whose activity results in nucleolus formation, constitute an extremely important part of genome. Despite the extensive exploration into avian genomes, no complete description of avian rRNA gene primary structure has been offered so far. We publish a complete chicken rRNA gene cluster sequence here, including 5'ETS (1836 bp), 18S rRNA gene (1823 bp), ITS1 (2530 bp), 5...

Adaptive web sites may offer automated recommendations generated through any number of well-studied techniques including collaborative, content-based and knowledge-based recommendation. Each of these techniques has its own strengths and weaknesses. In search of better performance, researchers have combined recommendation techniques to build hybrid recommender systems. This chapter surveys the s...

Hybridization may drive rare taxa to extinction through genetic swamping, where the rare form is replaced by hybrids, or by demographic swamping, where population growth rates are reduced due to the wasteful production of maladaptive hybrids. Conversely, hybridization may rescue the viability of small, inbred populations. Understanding the factors that contribute to destructive versus construct...

Classical breeding of many crops has been instrumental for ensuring food security by developing new varieties that are higheryielding, resistant to pests and diseases, drought-resistant or regionally adapted to different environments and growing conditions. A total of 513 cultivars of different pulse crops including chickpea, pigeonpea, mungbean, urdbean, lentil, fieldpea and rajmash were devel...