The p53 tumour suppressor protein is a transcription factor that activates genes that result in cell cycle arrest, DNA damage repair, senescence or apoptosis. Recent individual cell studies have indicated that p53 activation is highly regulated in response to stressed conditions and non-stressed (normal proliferating) conditions in cells. The aim of this research is to investigate the design pr...

In order to identify drought tolerant chickpea genotypes, an experiment was conducted in the west of Iran, during 2007-2009 cropping seasons. Several selection indices were used to illustrate genotypic differences in response to drought stress. The results of combined analysis of variance showed that year, genotype, stress conditions and their interaction effects were highly significant. Correl...

hFih, x) > hFih, x) (0 è h < h < oo). In the course of this investigation the question arose whether a C2 solution of (1), with F subject to (2), is uniquely determined by the conditions (C) yia) = y'ib) = 0, y(x) > 0 for x E (a, b\. Nehari conjectured that this solution is unique under an additional condition on the behavior of Fit, x) as a function of x. The purpose of this note is to show th...

This paper deals with the issue of buy-in thresholds in portfolio optimization using the Markowitz approach. Optimal values of invested fractions calculated using, for instance, the classical minimum-risk problem can be unsatisfactory in practice because they imply that very small amounts of certain assets are purchased. Realistically, we want to impose a discrete restriction on each invested f...

The objectives of the present research were to evaluate the variability induced by gamma-irradiation among a population of M8 sunflower mutant lines and to identify molecular markers associated with different seed germination traits. Experiments were carried out under well watered and water-stressed conditions using a randomized blocks design, with three replications. The studied traits consist...

Received: 22 August 2007 / Revised: 7 April 2008 c ©2008 Springer Science + Business Media, LLC Abstract In generalized linear models with fixed design, under the assumption λn → ∞ and other regularity conditions, the asymptotic normality of maximum quasi-likelihood estimator β̂n, which is the root of the quasi-likelihood equation with natural link function ∑n i=1 Xi(yi−μ(X ′ iβ)) = 0, is obtain...