The entomopathogen Beauveria bassiana (Bals.) Vuill. (Ascomycota: Hypocreales) can colonize plants endophytically and stimulate the production of secondary plant metabolites with anti-herbivore activities. We assayed topical virulence B. to Aphis gossypii Glover (Hemiptera: Aphididae), effects cucumber inoculation this fungus on metabolites, physiological consequences for aphids that fed these ...

in this paper, we investigate the existence of positive solutions for the ellipticequation $delta^{2},u+c(x)u = lambda f(u)$ on a bounded smooth domain $omega$ of $r^{n}$, $ngeq2$, with navier boundary conditions. we show that there exists an extremal parameter$lambda^{ast}>0$ such that for $lambda< lambda^{ast}$, the above problem has a regular solution butfor $lambda> lambda^{ast}$, the probl...

This article aims to present for a mathematical audience some interesting function theory elaborated over recent years by control engineers in connection with the problem of robustly stabilising an imperfectly modelled physical device. The theory of feedback extends over a broad field, from rarefied differential geometry to down-to-earth nuts-and-bolts engineering. Function theory enters into t...

This article, based on empirical qualitative data gained from a survey and interviews with a group of early childhood educators, argues for the inclusion of sexual differences, or more specifically, gay and lesbian equity issues, in approaches to anti-bias. The article examines the discourses that prevail in the field, that perpetuate the perceived irrelevance, invisibility and exclusion of les...