Senna occidentalis (L.) Link, subarbusto pertencente à família Fabaceae, conhecido popularmente como fedegoso, é uma espécie invasora com grande potencial biológico para uso medicinal. Este estudo objetivou avaliar o índice meiótico, viabilidade polínica e composição citoquímica dos grãos de pólen S. occidentalis. Botões florais 20 indivíduos fedegoso foram coletados no município Alta Floresta,...

We introduce a notion of topological quandle. Given a topological quandle Q we associate to every classical link L in R an invariant JQ(L) which is a topological space (defined up to a homeomorphism). The space JQ(L) can be interpreted as a space of colourings of a diagram of the link L with colours from the quandle Q.

We first characterize the minimal link-sets L whose directions must be reversed for reestablishing one or more directed paths from each node x to a fixed destination node d in a network when a link fails. Then, we give a distributed O(|E|) algorithm for determining such a link-set L, where |E| = (links in the network). This improves the previous lower bound O(n), where n = (nodes in the network...

background : the aim of this study was to determine the antibacterial activity of zataria multiflora boiss (avishan-e shirazi) and carum copticum (zenian) extracts on vibrio cholerae american type culture collection (atcc14035)and v. cholerae persian type culture collection (ptcc1611) strains. methods : antimicrobial effects of the extracts were assayed by disc diffusion and broth microdilution...

background and aims: our previous study has demonstrated that essence of carum copticum reduces contraction activity of ileum in rat. the present study was designed to find out the effects of nonpolar fraction of carum copticum essence (nfcce) on mechanical activity of the isolated ileum in rat. materials and methods: for evaluation of spasmolythic property of fraction, different doses of the s...